CN215258446U

CN215258446U - Hydraulic slip ring

Info

Publication number: CN215258446U
Application number: CN202121541775.1U
Authority: CN
Inventors: 于晖; 王勇
Original assignee: DALIAN EASY SOUND ELECTROMECHANIC CO LTD
Current assignee: DALIAN EASY SOUND ELECTROMECHANIC CO LTD
Priority date: 2021-07-07
Filing date: 2021-07-07
Publication date: 2021-12-21
Anticipated expiration: 2031-07-07

Abstract

The utility model provides a hydraulic pressure sliding ring, include: the device comprises a shell, a main shaft and a floating sleeve; the main shaft with but the shell relative rotation, be equipped with first oil through hole on the shell, be equipped with the oil circuit in the main shaft, the rotatable locating of one end of main shaft in the shell, the other end of main shaft is equipped with the second oil through hole, the cover is located to float between shell and the main shaft, the cover that floats is equipped with middle oil through hole, first oil through hole, middle oil through hole, oil circuit and second oil through hole communicate in proper order. The utility model discloses a hydraulic pressure sliding ring is through the oil circuit between cover connection shell and the main shaft that floats, will be connected with the shell fixed oil circuit and the pivoted oil circuit of being connected with the main shaft link together, and simultaneously, the design of cover that floats can satisfy the large-traffic demand of disclosing of high pressure.

Description

Hydraulic slip ring

Technical Field

The utility model relates to a fluid transmission field especially relates to a hydraulic pressure sliding ring.

Background

In some oil transmission working conditions, oil needs to be transmitted between two oil passages rotating relatively, and transmission flow and pressure are different according to different working conditions.

At present, a hydraulic rotary joint is used for oil transmission in wind power generation at home, but the existing hydraulic rotary joint can only be used under a low-pressure working condition or a small-flow working condition and cannot meet the requirements of a high-pressure large-flow working condition at the same time.

SUMMERY OF THE UTILITY MODEL

The utility model provides a hydraulic slip ring to overcome above-mentioned problem.

A hydraulic slip ring, comprising: the device comprises a shell, a main shaft and a floating sleeve;

the main shaft with but the shell relative rotation, be equipped with first oil through hole on the shell, be equipped with the oil circuit in the main shaft, the rotatable locating of one end of main shaft in the shell, the other end of main shaft is equipped with the second oil through hole, the cover is located to float between shell and the main shaft, the cover that floats is equipped with middle oil through hole, first oil through hole, middle oil through hole, oil circuit and second oil through hole communicate in proper order.

Furthermore, the floating sleeve and the outer shell are static relatively, a Glare ring is arranged between the floating sleeve and the outer shell, the floating sleeve and the main shaft rotate relatively, and a gap between the floating sleeve and the main shaft is sealed.

Further, be equipped with the bearing between shell and the main shaft, the bearing outside is equipped with the end cover, the end cover with be equipped with the sealing washer between the shell, be equipped with the skeleton oil blanket between end cover and the main shaft.

Furthermore, a first oil through groove is formed in the periphery of the floating sleeve and communicated with the first oil through hole, the first oil through groove comprises a side surface and a bottom surface, and an included angle formed between the side surface and the bottom surface is 135 degrees;

and a second oil through groove is formed in the inner periphery of the floating sleeve and communicated with the oil way.

Furthermore, the floating sleeve is provided with an oil drainage hole, the oil drainage hole penetrates through the floating sleeve, and the axis of the oil drainage hole is parallel to the axis of the floating sleeve.

Further, the first oil passing hole comprises a first oil inlet hole and a first oil returning hole, the oil path comprises an oil inlet path and an oil returning path, and the second oil passing hole comprises a second oil inlet hole and a second oil returning hole;

the floating sleeve comprises a first floating sleeve and a second floating sleeve, the first floating sleeve is provided with a first middle oil through hole, and the second floating sleeve is provided with a second middle oil through hole;

the first oil inlet hole, the first middle oil through hole, the oil inlet path and the second oil inlet hole are communicated in sequence, and the first oil return hole, the second middle oil through hole, the oil return path and the second oil return hole are communicated in sequence.

Furthermore, the shell is provided with an internal oil leakage hole, an oil leakage cavity is formed between the first floating sleeve and the second floating sleeve, and the internal oil leakage hole is communicated with the oil leakage cavity.

The utility model discloses a hydraulic pressure sliding ring is through the oil circuit between cover connection shell and the main shaft that floats, will be connected with the shell fixed oil circuit and the pivoted oil circuit of being connected with the main shaft link together, and simultaneously, the design of cover that floats can satisfy the large-traffic demand of disclosing of high pressure.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive labor.

Fig. 1 is a schematic structural view of a hydraulic slip ring disclosed in an embodiment of the present invention;

fig. 2 is a schematic side view of a hydraulic slip ring disclosed in an embodiment of the present invention;

FIG. 3 is a cross-sectional view taken at angle F-F of FIG. 2;

FIG. 4 is a cross-sectional view taken at E-E of FIG. 2;

FIG. 5 is an enlarged view of portion A of FIG. 3;

FIG. 6 is a schematic view of the floating sleeve according to the embodiment of the present invention;

FIG. 7 is a schematic diagram of a side view of the floating sleeve according to the embodiment of the present invention;

fig. 8 is an enlarged view of a cross-sectional view from a view point D-D in fig. 2 at the position of the oil drainage cavity.

In the figure: 1. a housing; 2. a main shaft; 3. a floating sleeve; 301. a first oil through groove; 302. a second oil through groove; 303. an oil drainage hole; 311. a side surface; 312. a bottom surface; 321. a first floating sleeve; 322. a second floating sleeve; 4. a first oil passage; 401. a first oil inlet hole; 402. a first oil return hole; 5. an oil path; 501. an oil inlet path; 502. an oil return path; 6. a second oil through hole; 601. a second oil inlet hole; 602. a second oil return hole; 7. a middle oil through hole; 701. a first intermediate oil passage; 702. a second intermediate oil passage; 8. A Glare circle; 9. a bearing; 10. an end cap; 11. a seal ring; 12. framework oil seal; 13. an internal drain oil return hole; 14. and an oil drainage cavity.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

As shown in fig. 1 to 4, a hydraulic slip ring includes: the device comprises a shell 1, a main shaft 2 and a floating sleeve 3;

the main shaft 2 with shell 1 can rotate relatively, be equipped with first oil through hole 4 on the shell 1, be equipped with oil circuit 5 in the main shaft 2, the rotatable locating of one end of main shaft 2 in the shell 1, the other end of main shaft 2 is equipped with second oil through hole 6, the cover 3 that floats is located between shell 1 and the main shaft 2, the cover 3 that floats is equipped with middle oil through hole 7, first oil through hole 4, middle oil through hole 7, oil circuit 5 and second oil through hole 6 communicate in proper order.

The floating sleeve and the outer shell 1 are static relatively, a GREEN 8 is arranged between the floating sleeve 3 and the outer shell 1, the floating sleeve 3 and the main shaft 2 rotate relatively, and a gap between the floating sleeve 3 and the main shaft 2 is sealed.

The static sealing position is sealed by a Glare ring, the bidirectional pressure bearing can reach 42MPa at most, and the pressure-resistant effect is good; and a clearance seal is adopted at the dynamic seal position, so that a certain internal leakage amount is allowed.

The clearance seal realizes the relative rotation of the inner ring and the outer ring by utilizing a small clearance existing on the surfaces of the inner ring and the outer ring, and simultaneously allows the smaller internal leakage amount of fluid, thereby realizing the sealing effect, the clearance is generally about 0.015-0.02mm, when the floating sleeve deforms due to the compression of the outer surface, the clearance between the floating sleeve and the main shaft is reduced, even the clearance is not kept (the clearance is not kept, namely, the locking state is realized, the rotation cannot be realized), and the risk that the pitch of the fan cannot be changed or is even more serious can be caused.

In order to avoid the situation, the material of the floating sleeve in the embodiment is QT700-2, the yield strength of the material of the QT700-2 is 4 times that of the common tin bronze, the pressure resistance of the floating sleeve is greatly enhanced, and meanwhile, the QT700-2 also has better wear resistance.

As shown in fig. 5, a bearing 9 is arranged between the housing 1 and the main shaft 2, an end cover 10 is arranged on the outer side of the bearing 9, a sealing ring 11 is arranged between the end cover 10 and the housing 1, and a framework oil seal 12 is arranged between the end cover 10 and the main shaft 2.

The fluid of internal leakage can not leak outside the hydraulic pressure sliding ring, and the seepage can lubricate the bearing to the bearing, has the skeleton oil blanket simultaneously, prevents to leak.

In order to further strengthen the reliability of the floating sleeve, the floating sleeve is prevented from deforming under high pressure, and the utility model discloses the structure of the floating sleeve is further improved.

As shown in fig. 6 and 7, a first oil through groove 301 is formed in the outer periphery of the floating sleeve 3, the first oil through groove 301 is communicated with the first oil through hole 4, the first oil through groove 301 includes a side surface 311 and a bottom surface 312, and an included angle between the side surface 311 and the bottom surface 312 is 135 °; a large included angle exists between the side surface 311 and the bottom surface 312 to form a large chamfer angle on the structure, so that the pressure bearing area of the surface of the floating sleeve is increased, the local pressure is reduced, and the possibility of deformation of the floating sleeve due to the compression of the outer surface is further reduced;

and a second oil through groove 302 is formed in the inner periphery of the floating sleeve 3, and the second oil through groove 302 is communicated with the oil path 5.

The first oil through hole 4 comprises a first oil inlet 401 and a first oil return hole 402, the oil path 5 comprises an oil inlet path 501 and an oil return path 502, and the second oil through hole 6 comprises a second oil inlet 601 and a second oil return hole 602;

the floating sleeve 3 comprises a first floating sleeve 321 and a second floating sleeve 322, the first floating sleeve 321 is provided with a first middle oil through hole 701, and the second floating sleeve 322 is provided with a second middle oil through hole 702;

the first oil inlet hole 401, the first middle oil through hole 701, the oil inlet path 501 and the second oil inlet hole 601 are sequentially communicated, and the first oil return hole 402, the second middle oil through hole 702, the oil return path 502 and the second oil return hole 602 are sequentially communicated.

The oil inlet path flows from the housing to the main shaft, flows in from the first oil inlet 401, passes through the first middle oil through hole 701 and the oil inlet path 501, and flows out from the second oil inlet 601; the oil return path flows from the main shaft to the housing, flows in from the second oil return hole 602, passes through the oil return path 502 and the second intermediate oil passage hole 702, and flows out from the first oil return hole 402.

Because of adopting clearance seal, the rotary joint can appear allowable internal leakage, and the oil of internal leakage can flow out from floating cover both ends, as shown in fig. 8, floating cover 3 is equipped with draining hole 303, draining hole 303 link up floating cover 3, the axis of draining hole 303 with the axis of floating cover 3 is parallel.

The housing 1 is provided with an internal oil drain and return hole 13, an oil drain cavity 14 is arranged between the first floating sleeve 321 and the second floating sleeve 322, and the internal oil drain and return hole 13 is communicated with the oil drain cavity 14.

Interior fluid of leaking leaks to the cover both sides that float, and during the draining chamber 14 was leaked to one side, the opposite side leaked to the bearing side, and the fluid of leaking the bearing side can lubricate the bearing on the one hand, and on the other hand can enter into draining chamber 14 through draining hole 303, and the oil return case is retrieved by interior oil return hole 13 of leaking again, can not produce fluid and leak.

The utility model discloses only need design an oil gallery on the shell, and need not the shutoff, avoid corresponding floating cover both ends at the shell and open the through-hole then open the fabrication hole at the shell side and get through two holes, at last with two fabrication holes wherein of end cap shutoff, if because the end cap does not tighten up, long-term corrosion or because of vibrations not hard up the risk that probably leads to the product operation back oil impregnate in the fabrication hole.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.

Claims

1. A hydraulic slip ring, comprising: the device comprises a shell (1), a main shaft (2) and a floating sleeve (3);

the main shaft (2) with shell (1) relative rotation, be equipped with first oil through hole (4) on shell (1), be equipped with oil circuit (5) in main shaft (2), rotatable the locating of one end of main shaft (2) in shell (1), the other end of main shaft (2) is equipped with second oil through hole (6), cover (3) of floating are located between shell (1) and main shaft (2), cover (3) of floating are equipped with middle oil through hole (7), first oil through hole (4), middle oil through hole (7), oil circuit (5) and second oil through hole (6) communicate in proper order.

2. The slip ring according to claim 1, wherein the floating sleeve () is stationary relative to the outer shell (1), a GREEN ring (8) is provided between the floating sleeve (3) and the outer shell (1), the floating sleeve (3) rotates relative to the main shaft (2), and a gap between the floating sleeve (3) and the main shaft (2) is sealed.

3. The hydraulic slip ring according to claim 1, characterized in that a bearing (9) is arranged between the housing (1) and the main shaft (2), an end cover (10) is arranged on the outer side of the bearing (9), a sealing ring (11) is arranged between the end cover (10) and the housing (1), and a framework oil seal (12) is arranged between the end cover (10) and the main shaft (2).

4. The hydraulic slip ring according to claim 1, characterized in that the floating sleeve (3) is provided with a first oil through groove (301) at the periphery, the first oil through groove (301) is communicated with the first oil through hole (4), the first oil through groove (301) comprises a side surface (311) and a bottom surface (312), and the included angle between the side surface (311) and the bottom surface (312) is 135 °;

the inner periphery of the floating sleeve (3) is provided with a second oil through groove (302), and the second oil through groove (302) is communicated with the oil way (5).

5. The hydraulic slip ring according to claim 1, characterized in that the floating sleeve (3) is provided with an oil drainage hole (303), the oil drainage hole (303) penetrates through the floating sleeve (3), and the axis of the oil drainage hole (303) is parallel to the axis of the floating sleeve (3).

6. The hydraulic slip ring according to claim 1, wherein the first oil through hole (4) comprises a first oil inlet hole (401) and a first oil return hole (402), the oil path (5) comprises an oil inlet path (501) and an oil return path (502), and the second oil through hole (6) comprises a second oil inlet hole (601) and a second oil return hole (602);

the floating sleeve (3) comprises a first floating sleeve (321) and a second floating sleeve (322), the first floating sleeve (321) is provided with a first middle oil through hole (701), and the second floating sleeve (322) is provided with a second middle oil through hole (702);

the oil feeding device is characterized in that the first oil inlet hole (401), the first middle oil passing hole (701), the oil feeding oil path (501) and the second oil inlet hole (601) are sequentially communicated, and the first oil returning hole (402), the second middle oil passing hole (702), the oil returning oil path (502) and the second oil returning hole (602) are sequentially communicated.

7. The hydraulic slip ring according to claim 6, characterized in that the outer casing (1) is provided with an internal oil drain and return hole (13), an oil drain cavity (14) is arranged between the first floating sleeve (321) and the second floating sleeve (322), and the internal oil drain and return hole (13) is communicated with the oil drain cavity (14).