CN211901357U

CN211901357U - Cross package that lubricating oil was easily changed

Info

Publication number: CN211901357U
Application number: CN202020130718.3U
Authority: CN
Inventors: 胡存辉; 周乾龙
Original assignee: Ningbo Shengyu Transmission Technology Co ltd
Current assignee: Ningbo Shengyu Transmission Technology Co ltd
Priority date: 2020-01-20
Filing date: 2020-01-20
Publication date: 2020-11-10
Anticipated expiration: 2030-01-20

Abstract

The utility model relates to a cross package that lubricating oil is liable to change belongs to shaft coupling technical field. The cross shaft comprises four shaft heads, the bearing comprises four shaft heads, the four bearings are respectively arranged on the four shaft heads, the bearing comprises a bearing outer ring and a plurality of rollers, the bearing outer ring is sleeved outside the shaft heads, the rollers are clamped between the shaft heads and the bearing outer ring, one end, away from the cross shaft, of the bearing outer ring is provided with a bearing cover, a gasket is clamped between the bearing cover and the shaft heads, a first through hole and a second through hole are respectively formed in the bearing cover and the gasket, an end cover is fixed on the bearing cover through bolts, a through type pressure injection oil cup is arranged on the end cover, an oil groove is formed in the gasket, a sealing fixing assembly is arranged between the bottom of the shaft head and the bearing outer ring and comprises an oil seal and an oil seal seat clamped between the shaft heads and the bearing outer ring, and a through sewage discharge hole is formed. The utility model has the advantages of it is convenient effectual to trade lubricating oil.

Description

Cross package that lubricating oil was easily changed

Technical Field

The utility model belongs to the technical field of the shaft coupling technique and specifically relates to a cross package that lubricating oil is easily changed is related to.

Background

The cross shaft universal coupling utilizes the characteristics of a mechanism thereof to ensure that two shafts are not on the same axis, can realize continuous rotation of the two linked shafts under the condition of an axis included angle beta, reliably transmits torque and motion, mainly plays a role in transmitting power at a variable angle, and mainly comprises a cross bag component and two flange fork heads connected through the cross bag component. The cross-shaped bag has the function of changing the angle, and the performance of the cross-shaped bag can influence the performance of the whole coupler to a great extent.

An existing cross-shaped bag generally comprises a cross shaft and four rollers sleeved at four end portions of the cross shaft, a bearing is generally sleeved between the end portion of the cross shaft and the rollers, an oil seal is installed between the rollers and the cross shaft, and oil filling ports are formed in the end portions of the rollers. Lubricating oil is injected between the roller and the cross shaft during installation, so that the friction force between the roller and the cross shaft is reduced, and the oil injection port is used for supplementing lubricating oil in the later period.

The cross bag has the following defects: because the airtight space of storing lubricating oil is formed between roller and the universal joint pin for later stage is not in the same direction as smooth when injecting into lubricating oil, and the inside sump oil of unable discharge simultaneously leads to wearing and tearing, and the iron fillings that the wearing and tearing dropped and lubricating oil mix and cause the lubricating property decline of lubricating oil, aggravate wearing and tearing reduction life.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art exists, the utility model aims at providing a cross package that convenient effectual lubricating oil of trading lubricating oil is easily changed.

The utility model discloses an above-mentioned function can be realized through following technical scheme:

a cross bag with lubricating oil easy to replace comprises a cross shaft and bearings, wherein the cross shaft comprises four shaft heads, the number of the bearings is four, the four bearings are respectively arranged on the four shaft heads, each bearing comprises a bearing outer ring and a plurality of rollers, the bearing outer rings are sleeved outside the shaft heads, the rollers are clamped between the shaft heads and the bearing outer rings, one end, away from the cross shaft, of the bearing outer rings is provided with a bearing cover, and a gasket is clamped between the bearing cover and the shaft heads;

the bearing cover is provided with a first through hole, an end cover is fixed on the bearing cover through a bolt, a straight-through type pressure injection oil cup is arranged on the end cover, a second through hole is formed in the gasket, an oil groove penetrating through an inner ring and an outer ring of the gasket is formed in the gasket, a sealing and fixing assembly is arranged between the bottom of the spindle head and the outer ring of the bearing, the sealing and fixing assembly comprises an oil seal and an oil seal seat, the oil seal and the oil seal seat are clamped between the spindle head and the outer ring of the bearing, and a through sewage discharge hole is formed in the oil seal seat along the thickness direction.

Through adopting above-mentioned technical scheme, the straight-through pressure filling oil cup that sets up is used for the supplementary injection lubricating oil, the straight-through pressure filling oil cup sets up on the end cover, because the end cover generally exposes, conveniently pour into lubricating oil, the drain that sets up is used for discharging dirty oil, when making the straight-through pressure filling oil cup pour into new lubricating oil into, dirty oil can discharge, the pouring into of the new lubricating oil of being convenient for, the circulation of the oil groove of setting makes things convenient for lubricating oil, because the straight-through pressure filling oil cup has certain sealing capacity, simultaneously because the centrifugal force when adhesion between each part of cross package and the lubricating oil and the cross package is rotatory, make inside lubricating oil be difficult to reveal when not pouring into new lubricating oil into.

The present invention may be further configured in a preferred embodiment as: the oil injection structure is characterized in that a plug screw hole is formed in the end cover, a plug screw is fixed to the inner thread of the plug screw hole, an oil injection groove is formed in the end face, far away from the end cover, of the plug screw, an oil injection port penetrating through the plug screw is formed in the bottom of the oil injection groove, the straight-through type pressure injection oil cup is fixed in the oil injection port in a threaded mode, and the straight-through type pressure injection oil cup is located in the oil injection groove integrally.

Through adopting above-mentioned technical scheme, set up the plug screw, through-type pressure notes oil cup sets up in the oiling groove of plug screw for through-type pressure notes oil cup obtains the protection, reduces through-type pressure notes oil cup by the possibility of collision, and when refueling simultaneously, the nozzle can insert the oiling groove, helps refueling to rob the cooperation with through-type pressure notes oil cup, conveniently refuels.

The present invention may be further configured in a preferred embodiment as: sealed fixed subassembly still includes dish spring and jump ring, the bearing inner race is provided with the jump ring groove, the oil blanket seat is close to the lateral wall of the one end of roller is provided with the annular, the annular is close to the cell wall of roller runs through the setting, jump ring outer lane card is located the jump ring inslot, jump ring inner circle butt the tank bottom of annular, the dish spring set up in the jump ring with between the roller, just the dish spring outer lane with the jump ring butt, the dish spring inner circle with the roller butt, the dish spring with there is the clearance between the oil blanket seat.

Through adopting above-mentioned technical scheme, the jump ring is used for supporting fixed roller, the setting of dish spring is used for the elastic support roller, dish spring outer lane and jump ring butt simultaneously, dish spring inner circle and roller butt, make the dish spring have the space between the oil seal seat, be convenient for the sump oil to discharge through the blowoff hole, when the cross package is rotatory, because centrifugal force's existence lubricating oil is difficult for revealing, when the cross package stops rotatoryly, the vertical spindle nose that sets up compresses the dish spring under the action of gravity, better closed blowoff hole, avoid lubricating oil to spill, and the spindle nose that does not vertical set up, lubricating oil itself is difficult so that the blowoff hole reveals, the dynamic seal of blowoff hole has been realized, the oil seal seat sets up the annular makes jump ring keep level with the oil seal seat, the clearance between dish spring and the oil seal seat has been reduced, sealed blowoff.

The present invention may be further configured in a preferred embodiment as: the oil seal seat is inserted into the bearing outer ring in an interference mode, a through hole for the shaft head to penetrate out is formed in the oil seal seat, the through hole is a stepped hole, the aperture of one end, close to the roller, of the through hole is larger than that of one end, far away from the roller, of the through hole, and the oil seal is clamped between one end, with the larger aperture, of the oil seal seat and the shaft head.

Through adopting above-mentioned technical scheme, the interference of oil blanket seat is pegged graft in the bearing inner race, and the installation is more firm, and the perforation sets up to the shoulder hole, and the oil blanket centre gripping receives the support of oil blanket seat in centre gripping between the great one end in oil blanket seat aperture and spindle nose, and the oil blanket installation is more firm.

The present invention may be further configured in a preferred embodiment as: the inner diameter of the disc spring is larger than the shaft diameter of the shaft head.

Through adopting above-mentioned technical scheme, there is the clearance between dish spring and the spindle nose, the flow and the discharge of lubricating oil when being convenient for trade lubricating oil.

The present invention may be further configured in a preferred embodiment as: the end face, facing the shaft head, of the bearing cover is provided with an annular bulge, the inner diameter of the annular bulge is larger than the shaft diameter of the shaft head, and the outer diameter of the gasket is smaller than the shaft diameter of the shaft head.

Through adopting above-mentioned technical scheme for there is the clearance between gasket and the annular bulge, is favorable to the flow of lubricating oil, can flow into the roller through the oil groove from the end cover, also more smoothly during the change lubricating oil.

The present invention may be further configured in a preferred embodiment as: the two coaxial shaft heads on the cross shaft are coaxially arranged, and oil passages which penetrate through the two shaft heads and are coaxial with the shaft heads are arranged on the two coaxially arranged shaft heads.

Through adopting above-mentioned technical scheme, the oil duct that sets up is used for communicating four spindle noses of cross for smooth and easy more that the wheel lubricating oil flows in the cross package, can store more lubricating oil.

The present invention may be further configured in a preferred embodiment as: and a check ring is arranged at one end, far away from the end cover, of the bearing outer ring, the outer diameter of the check ring is smaller than that of the bearing outer ring, the inner ring of the check ring is abutted against the oil seal seat, and the check ring is fixed with the bearing outer ring through screws.

Through adopting above-mentioned technical scheme, the retaining ring that sets up is used for further fixed oil seal seat for oil seal seat and bearing inner race between fixed more firm, the retaining ring external diameter is less than the bearing inner race and makes the cross package be difficult to the mutual interference when installing four bearings, reduces the cross package simultaneously and installs the possibility of interfering with other parts on the shaft coupling.

To sum up, the utility model discloses a following at least one useful technological effect:

1. the straight-through type pressure filling oil cup is used for supplementing and filling lubricating oil, the drain outlet is used for discharging dirty oil, so that when new lubricating oil is filled into the straight-through type pressure filling oil cup, the dirty oil can be discharged, the new lubricating oil can be conveniently filled, the oil groove is arranged to facilitate the circulation of the lubricating oil, and because the straight-through type pressure filling oil cup has certain sealing capacity, and meanwhile, because of the adhesion between each component of the cross-shaped bag and the lubricating oil and the centrifugal force generated when the cross-shaped bag rotates, the lubricating oil in the straight-through type pressure filling oil cup is not easy to leak when the new lubricating oil is not filled;

2. the arranged disc spring improves the sealing performance when in use and reduces the possibility of oil leakage while keeping the oil discharge capability of the sewage discharge hole;

3. the retainer ring is arranged to further fix the oil seal seat, so that the oil seal seat and the bearing outer ring are more firmly fixed.

Drawings

Fig. 1 is a schematic structural diagram of the present invention;

FIG. 2 is an enlarged partial schematic view of portion A of FIG. 1;

FIG. 3 is an enlarged partial schematic view of portion B of FIG. 1;

fig. 4 is a partially enlarged schematic view of a portion C in fig. 1.

Reference numerals: 1. a cross shaft; 11. a shaft head; 12. an oil passage; 2. a bearing; 21. a bearing outer race; 211. a clamp spring groove; 22. a roller; 23. a bearing cap; 231. a first through hole; 232. an annular projection; 3. a gasket; 31. a second through hole; 32. an oil sump; 4. an end cap; 41. plugging a screw hole; 42. a plug screw; 43. an oil injection groove; 44. an oil filling port; 45. a straight-through type pressure injection oil cup; 5. a seal fixing assembly; 51. oil sealing; 52. an oil seal seat; 521. perforating; 522. a sewage draining hole; 523. a ring groove; 53. a clamp spring; 54. a disc spring; 55. and a retainer ring.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Referring to fig. 1, the cross-shaped bag with easily replaced lubricating oil disclosed by the utility model comprises a cross shaft 1 and a bearing 2, wherein the cross shaft 1 comprises four shaft heads 11, the four shaft heads 11 are coaxially arranged in pairs, and an oil duct 12 penetrating the two coaxially arranged spindle heads 11 is arranged between the two coaxially arranged spindle heads 11, and the oil ducts 12 arranged on the spindle heads of the spindle heads 11 are coaxial, meanwhile, the four shaft heads 11 have the same diameter, the four bearings 2 are respectively arranged on the four shaft heads 11, each bearing 2 comprises a bearing outer ring 21 and a plurality of rollers 22, the bearing outer ring 21 is sleeved outside the shaft head 11, the rollers 22 are clamped between the shaft head 11 and the bearing outer ring 21, and a plurality of rollers 22 are arranged at intervals in the circumferential direction relative to the shaft head 11, a bearing cover 23 is arranged at one end, far away from the cross shaft 1, of the bearing outer ring 21, and a gasket 3 is clamped between the bearing cover 23 and the shaft head 11.

Referring to fig. 1 and 2, a first through hole 231 is formed in the bearing cover 23, the first through hole 231 is coaxially arranged with the bearing cover 23, the end cover 4 is bolted on the bearing cover 23, a plug hole 41 is formed in the end cover 4, a plug screw 42 is fixed in the plug hole 41 through a screw thread, an oil filling groove 43 is formed in the end surface of the plug screw 42 away from the end cover 4, an oil filling port 44 penetrating the plug screw 42 is formed in the bottom of the oil filling groove 43, a straight-through type pressure injection oil cup 45 is arranged in the oil filling groove 43, the straight-through type pressure injection oil cup 45 is integrally positioned in the oil filling groove 43, a second through hole 31 is formed in the gasket 3, the second through hole 31 is coaxially arranged with the gasket 3, an oil groove 32 (compare with fig. 3) penetrating through the inner ring and the outer ring of the gasket 3 is further formed in the gasket 3, an annular protrusion 232 is formed in the end surface of the bearing cover 23 facing the spindle nose 11, the, the outer diameter of the washer 3 is smaller than the shaft diameter of the shaft head 11.

Referring to fig. 1 and 4, a sealing and fixing assembly 5 is arranged between the bottom of the spindle nose 11 and the bearing outer ring 21, the sealing and fixing assembly 5 includes an oil seal 51, an oil seal seat 52, a snap spring 53, a disc spring 54 and a retainer ring 55, the oil seal seat 52 is inserted into the bearing outer ring 21 in an interference manner by a cold assembly, the oil seal seat 52 is provided with a through hole 521 for the spindle nose 11 to penetrate through, the through hole 521 is a stepped hole, the aperture of one end of the perforation 521 close to the roller 22 is larger than that of one end of the perforation 521 far away from the roller 22, the oil seal 51 is clamped between the end with the larger aperture of the oil seal seat 52 and the shaft head 11, the oil seal seat 52 is provided with a through blow-off hole 522 along the thickness direction, meanwhile, the aperture of the blow-off hole 522 is set to be in a state of smaller thickness relative to the oil seal seat 52, because the length of blowdown hole 522 is longer than the aperture, there is the adhesion between pore wall and the lubricating oil, the lubricating oil is difficult more to reveal.

The bearing outer ring 21 is provided with a clamp spring groove 211, the outer side wall of one end of the oil seal seat 52 close to the roller 22 is provided with a ring groove 523, the ring groove 523 is arranged close to the groove wall of the roller 22 in a penetrating mode, the outer ring of the clamp spring 53 is clamped in the clamp spring groove 211, the inner ring of the clamp spring 53 abuts against the groove bottom of the ring groove 523, the disc spring 54 is arranged between the clamp spring 53 and the roller 22, the outer ring of the disc spring 54 abuts against the clamp spring 53, the inner ring of the disc spring 54 abuts against the roller 22, a gap exists between the disc spring 54 and the oil seal seat 52, the inner diameter of the disc spring 54 is larger than the shaft diameter of the shaft head 11, the outer diameter of the retainer ring 55 is smaller than the outer diameter of the bearing outer ring 21, the inner ring of the retainer ring 55 abuts against the oil seal seat 52.

The implementation principle of the embodiment is as follows: when changing oil, the cross package is rotated to make the two spindle heads 11 in a horizontal state, lubricating oil is additionally injected into the through type pressure injection oil cup 45 on the horizontal spindle head 11 in sequence, sewage oil is discharged from the sewage discharge port, new lubricating oil is conveniently injected, the arranged oil groove 32 is convenient for the circulation of the lubricating oil, after the oil change of the two spindle heads 11 is completed, the coupling device is rotated to make the other two spindle heads 11 in a horizontal state, the lubricating oil is additionally injected into the corresponding through type pressure injection oil cup 45, the sewage oil flows out through the corresponding sewage discharge holes 522, and the lubricating oil change of the whole cross package is completed.

The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. The utility model provides a cross package that lubricating oil is liable to change, includes cross (1) and bearing (2), cross (1) includes four spindle nose (11), bearing (2) have four, four bearing (2) divide and establish four on spindle nose (11), bearing (2) are including bearing inner race (21) and a plurality of roller (22), bearing inner race (21) suit in spindle nose (11) are outside, and are a plurality of roller (22) centre gripping in spindle nose (11) with between bearing inner race (21), its characterized in that: a bearing cover (23) is arranged at one end, away from the cross shaft (1), of the bearing outer ring (21), and a gasket (3) is clamped between the bearing cover (23) and the shaft head (11);

first through-hole (231) have been seted up in bearing cap (23), bolt fastening has end cover (4) on bearing cap (23), be provided with through type pressure filling oil cup (45) on end cover (4), second through-hole (31) have been seted up on gasket (3), oil groove (32) of lining up gasket (3) inner circle and outer lane have been seted up on gasket (3), spindle nose (11) bottom with be provided with sealed fixed subassembly (5) between bearing inner lane (21), sealed fixed subassembly (5) include oil blanket (51) and oil seal seat (52), oil blanket (51) with oil seal seat (52) centre gripping in between spindle nose (11) and bearing inner lane (21), blow-off hole (522) that link up is seted up along the thickness direction in oil seal seat (52).

2. A readily replaceable lubricant cross pack as claimed in claim 1, wherein: screw plug holes (41) are formed in the end cover (4), screw plugs (42) are fixed to the inner threads of the screw plug holes (41), the screw plugs (42) are far away from oil filling grooves (43) are formed in the end face of the end cover (4), oil filling ports (44) penetrating through the screw plugs (42) are formed in the groove bottoms of the oil filling grooves (43), the straight-through type pressure injection oil cup (45) is fixed to the oil filling ports (44) in a threaded mode, and the straight-through type pressure injection oil cup (45) is integrally located in the oil filling grooves (43).

3. A readily replaceable lubricant cross pack as claimed in claim 2, wherein: sealed fixed subassembly (5) still include dish spring (54) and jump ring (53), bearing inner race (21) are provided with jump ring groove (211), oil seal seat (52) are close to the lateral wall of the one end of roller (22) is provided with annular groove (523), annular groove (523) are close to the cell wall of roller (22) runs through the setting, jump ring (53) outer lane card is located in jump ring groove (211), jump ring (53) inner circle butt the tank bottom of annular groove (523), dish spring (54) set up in jump ring (53) with between roller (22), just dish spring (54) outer lane with jump ring (53) butt, dish spring (54) inner circle with roller (22) butt, dish spring (54) with there is the clearance between oil seal seat (52).

4. A readily replaceable lubricant cross pack as claimed in claim 3, wherein: the oil seal seat (52) is inserted into the bearing outer ring (21) in an interference mode, a through hole (521) for the shaft head (11) to penetrate through is formed in the oil seal seat (52), the through hole (521) is a stepped hole, the aperture of one end, close to the roller (22), of the through hole (521) is larger than that of one end, far away from the roller (22), of the through hole (521), and the oil seal (51) is clamped between the end, with the larger aperture, of the oil seal seat (52) and the shaft head (11).

5. A readily replaceable lubricant cross pack as claimed in claim 4, wherein: the inner diameter of the disc spring (54) is larger than the shaft diameter of the shaft head (11).

6. A readily replaceable lubricant cross pack as claimed in claim 5, wherein: the end face, facing the shaft head (11), of the bearing cover (23) is provided with an annular bulge (232), the inner diameter of the annular bulge (232) is larger than the shaft diameter of the shaft head (11), and the outer diameter of the gasket (3) is smaller than the shaft diameter of the shaft head (11).

7. A readily replaceable lubricant cross pack as claimed in claim 6, wherein: the oil gallery structure is characterized in that the shaft heads (11) on the cross shaft (1) are coaxially arranged in pairs, and the two coaxially arranged shaft heads (11) are provided with oil passages (12) which penetrate through the two shaft heads (11) and are coaxial with the shaft heads (11).

8. A readily replaceable lubricant cross pack as claimed in claim 7, wherein: one end, far away from the end cover (4), of the bearing outer ring (21) is provided with a retainer ring (55), the outer diameter of the retainer ring (55) is smaller than that of the bearing outer ring (21), the inner ring of the retainer ring (55) is abutted to the oil seal seat (52), and the retainer ring (55) is fixed with the bearing outer ring (21) through screws.