CN215110036U - Wear-resistant crankshaft structure - Google Patents

Wear-resistant crankshaft structure Download PDF

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Publication number
CN215110036U
CN215110036U CN202120132920.4U CN202120132920U CN215110036U CN 215110036 U CN215110036 U CN 215110036U CN 202120132920 U CN202120132920 U CN 202120132920U CN 215110036 U CN215110036 U CN 215110036U
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CN
China
Prior art keywords
cylindrical roller
roller group
section
eccentric section
crankshaft structure
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Active
Application number
CN202120132920.4U
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Chinese (zh)
Inventor
李成志
潘祥
应杰
许一齐
赵崇碧
师文广
张红娟
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Ningbo Stf Hydraulic Transmissions Co ltd
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Ningbo Stf Hydraulic Transmissions Co ltd
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Priority to CN202120132920.4U priority Critical patent/CN215110036U/en
Priority to PCT/CN2021/075489 priority patent/WO2022151548A1/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C3/00—Shafts; Axles; Cranks; Eccentrics
    • F16C3/04—Crankshafts, eccentric-shafts; Cranks, eccentrics
    • F16C3/06—Crankshafts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C3/00—Shafts; Axles; Cranks; Eccentrics
    • F16C3/04—Crankshafts, eccentric-shafts; Cranks, eccentrics
    • F16C3/06—Crankshafts
    • F16C3/10—Crankshafts assembled of several parts, e.g. by welding by crimping
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C9/00—Bearings for crankshafts or connecting-rods; Attachment of connecting-rods
    • F16C9/02—Crankshaft bearings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16N—LUBRICATING
    • F16N1/00—Constructional modifications of parts of machines or apparatus for the purpose of lubrication
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16N—LUBRICATING
    • F16N39/00—Arrangements for conditioning of lubricants in the lubricating system
    • F16N39/06—Arrangements for conditioning of lubricants in the lubricating system by filtration

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)

Abstract

The utility model discloses a wear-resistant crankshaft structure, which comprises a shaft sleeve, a crankshaft body and a plurality of groups of cylindrical roller sets, wherein the crankshaft body comprises an eccentric section, the shaft sleeve is sleeved on the eccentric section, the plurality of groups of cylindrical roller sets are arranged between the shaft sleeve and the eccentric section, a gasket is arranged between the adjacent cylindrical roller sets, and the gasket is sleeved on the eccentric section; the advantage is that can effectively avoid the wearing and tearing between the cylindrical roller terminal surface, increase of service life.

Description

Wear-resistant crankshaft structure
Technical Field
The utility model relates to a crankshaft structure especially relates to a wear-resisting formula crankshaft structure.
Background
The crankshaft connecting rod type hydraulic motor is a hydraulic actuating mechanism which converts hydraulic energy into mechanical energy and outputs rotary motion, and consists of an oil through disc, an oil distribution disc, a shell, a plunger-connecting rod assembly in the shell, a crankshaft structure and a bearing, wherein the crankshaft structure plays an extremely important role in the oil through disc, generally speaking, the crankshaft structure consists of a shaft sleeve, a crankshaft body and cylindrical rollers, a spacer ring is fixed in the middle of the shaft sleeve in the circumferential direction, the shaft sleeve is sleeved on the crankshaft body, and a plurality of groups of cylindrical rollers are arranged between the shaft sleeve and the crankshaft body.
After hydraulic system long-time operation, if not change hydraulic oil in the regulation time, fluid cleanliness this moment is relatively poor, and inside foreign particle is more, and when foreign particle got into crankshaft structure inside, can cause extrusion wear, the epidermis between the cylindrical roller terminal surface to peel off, has directly influenced motor life, and cylindrical roller directly blocks when serious dies, causes bent axle body and axle sleeve to damage, takes place motor trouble.
Disclosure of Invention
In order to solve the deficiencies existing in the prior art, the utility model provides a wear-resisting formula crankshaft structure, its wearing and tearing that can effectively avoid between the cylindrical roller terminal surface, increase of service life.
The utility model provides a technical scheme that above-mentioned technical problem adopted does: the wear-resistant crankshaft structure comprises a shaft sleeve, a crankshaft body and a plurality of groups of cylindrical roller groups, wherein the crankshaft body comprises an eccentric section, the shaft sleeve is sleeved on the eccentric section, the plurality of groups of cylindrical roller groups are arranged between the shaft sleeve and the eccentric section, a gasket is arranged between every two adjacent cylindrical roller groups, and the gasket is sleeved on the eccentric section.
The number of the cylindrical roller groups is four, the cylindrical roller groups are respectively a first cylindrical roller group, a second cylindrical roller group, a third cylindrical roller group and a fourth cylindrical roller group from front to back, a spacing ring is circumferentially fixed on the inner side wall in the middle of the shaft sleeve, the first cylindrical roller group and the second cylindrical roller group are positioned on one side of the spacing ring, the third cylindrical roller group and the fourth cylindrical roller group are positioned on the other side of the spacing ring, and the gaskets are respectively arranged between the first cylindrical roller group and the second cylindrical roller group and between the third cylindrical roller group and the fourth cylindrical roller group. In this structure, the quantity of cylinder roller group is four groups, first cylinder roller group and second cylinder roller group are located one side of spacer ring, third cylinder roller group and fourth cylinder roller group are located the opposite side of spacer ring, the spacer ring plays the supporting role for second cylinder roller group and third cylinder roller group, be convenient for assemble, also can prevent the terminal surface contact of second cylinder roller group and third cylinder roller group in addition, play the guard action to second cylinder roller group and third cylinder roller group, prevent wearing and tearing, the packing ring sets up between first cylinder roller group and second cylinder roller group and third cylinder roller group and fourth cylinder roller group, the terminal surface wearing and tearing between them have been avoided.
The hardness of the washer is less than that of the cylindrical roller group. The method has the advantages of reducing the end surface abrasion of the cylindrical roller group when the cylindrical roller group is contacted with the gasket and protecting the cylindrical roller group.
And a gap for oil liquid to flow is reserved between the gasket and the eccentric section. In the structure, a gap is reserved between the gasket and the eccentric section, so that oil can conveniently pass through the gap, the cylindrical roller is cooled and lubricated, and the stable operation of the cylindrical roller is ensured.
The end face of the eccentric section is provided with a plurality of flow passage holes which are communicated front and back, the side wall of the eccentric section is provided with side holes communicated with the corresponding flow passage holes, and a channel for oil to flow is formed between the flow passage holes and the side holes. In the structure, the arrangement of the flow passage hole and the side hole reduces the weight of the whole crankshaft structure, and the rotational inertia of the crankshaft structure in the running process of the motor can be reduced; the flow passage hole is communicated with the side hole, a passage for oil supply liquid to flow is formed between the flow passage hole and the side hole, in the process of motor operation, oil can be led into the crank structure, on one hand, the cylindrical roller can be cooled and lubricated, the stable operation of the cylindrical roller is ensured, on the other hand, the impurity particles in the crank structure can be taken out, the oil flows back to an oil tank at an oil drainage port of the motor along with the oil, the extrusion abrasion between the cylindrical rollers is avoided, and the service life is prolonged.
The lateral wall of eccentric section on circumference be provided with the slot, the slot position with the position of spacer ring corresponding, the side opening set up the slot in. In this structure, receive the injecing of spacer ring position, the cylindrical roller equipartition is in the both sides of spacer ring, and the setting up of slot makes and leaves more spaces between the lateral wall of spacer ring and eccentric section, and fluid gets into the back from the runner hole, flows out outside the slot by the side opening again, and the inside impurity particle of crankshaft structure takes out, filters along with fluid at motor draining port flow back oil tank, avoids the extrusion wearing and tearing between the cylindrical roller, increases life.
The crankshaft body further comprises an output shaft section, a front bearing section and a rear bearing section, the output shaft section, the front bearing section, the eccentric section and the rear bearing section are sequentially connected and fixed, the axes of the output shaft section, the front bearing section and the rear bearing section are on the same straight line, and the axes of the eccentric section and the front bearing section are not on the same straight line.
The front end and the rear end of the eccentric section coaxially extend outwards and are fixedly provided with a first limiting ring and a second limiting ring respectively, a first gap is formed between the first limiting ring and the shaft sleeve, a second gap is formed between the second limiting ring and the shaft sleeve, the end face of the first cylindrical roller group is in contact with the end face of the first limiting ring, and the end face of the fourth cylindrical roller group is in contact with the end face of the second limiting ring. In the structure, the arrangement of the first limiting ring and the second limiting ring plays a role in limiting the axial movement of the first cylindrical roller set and the fourth cylindrical roller set, so that the normal operation of the crankshaft structure is ensured.
Compared with the prior art, the utility model has the advantages of: the arrangement of the gaskets separates a plurality of groups of cylindrical roller groups, so that the end surface abrasion between the adjacent cylindrical roller groups can be avoided, the service life of the cylindrical roller groups is prolonged, meanwhile, due to the existence of the gaskets, the phenomenon that the cylindrical rollers are in serial positions between the adjacent cylindrical roller groups can not occur, the condition that the adjacent cylindrical roller groups are mutually clamped due to the processing error (the length is inconsistent) of the cylindrical roller groups can be avoided, the stability in operation is greatly improved, in addition, the cylindrical roller groups can be changed from full loading to less loading, the cylindrical rollers can not fall to the next row, the assembly is convenient, and the extrusion abrasion between the cylindrical rollers and the cylindrical rollers between each group of cylindrical roller groups can be effectively avoided under the stress state; the utility model discloses can effectively avoid the wearing and tearing between the cylindrical roller terminal surface, increase of service life.
Drawings
Fig. 1 is a schematic perspective view of the present invention;
fig. 2 is a side view of the present invention;
fig. 3 is a cross-sectional view of the present invention;
fig. 4 is a schematic view of the three-dimensional structure of the middle crankshaft body of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples, but the present invention is not limited thereto.
The first embodiment is as follows: as shown in the figure, a wear-resisting formula crankshaft structure, including axle sleeve 1, bent axle body 2 and multiunit cylinder roller group, bent axle body 2 includes an eccentric section 21, and axle sleeve 1 cover is established on eccentric section 21, and multiunit cylinder roller group installs between axle sleeve 1 and eccentric section 21, is provided with packing ring 4 between the adjacent cylinder roller group, and packing ring 4 cover is established on eccentric section 21.
Example two: as shown in the figure, the other structure is the same as the first embodiment, except that the number of the roller sets is four, the roller sets are respectively the first roller set 31, the second roller set 32, the third roller set 33 and the fourth roller set 34 from front to back, the spacer ring 11 is circumferentially fixed on the inner side wall of the middle part of the shaft sleeve 1, the first roller set 31 and the second roller set 32 are located on one side of the spacer ring 11, the third roller set 33 and the fourth roller set 34 are located on the other side of the spacer ring 11, and the washers 4 are respectively arranged between the first roller set 31 and the second roller set 32 and between the third roller set 33 and the fourth roller set 34. In the structure, the number of the cylindrical roller groups is four, the first cylindrical roller group 31 and the second cylindrical roller group 32 are positioned on one side of the spacer ring 11, the third cylindrical roller group 33 and the fourth cylindrical roller group 34 are positioned on the other side of the spacer ring 11, the spacer ring 11 plays a supporting role for the second cylindrical roller group 32 and the third cylindrical roller group 33, the assembly is convenient, in addition, the end face contact of the second cylindrical roller group 32 and the third cylindrical roller group 33 can be prevented, the second cylindrical roller group 32 and the third cylindrical roller group 33 are protected, the abrasion is prevented, and the gaskets 4 are arranged between the first cylindrical roller group 31 and the second cylindrical roller group 32 and between the third cylindrical roller group 33 and the fourth cylindrical roller group 34, so that the end face abrasion between the first cylindrical roller group 31 and the second cylindrical roller group 32 and between the third cylindrical roller group 33 and the fourth cylindrical roller group 34 is avoided.
The washer 4 has a hardness less than that of the roller set. The method has the advantages of reducing the end surface abrasion when the cylindrical roller set is contacted with the gasket 4 and protecting the cylindrical roller set.
A gap for oil to flow is reserved between the gasket 4 and the eccentric section 21. In this structure, the clearance is left between the eccentric section 21 of packing ring 4 and, can make things convenient for fluid to pass through, cools off, lubricates cylindrical roller like this, guarantees cylindrical roller's even running.
Example three: as shown in the figures, the other structure is the same as the embodiment, but the difference is that the end surface of the eccentric section 21 is provided with a plurality of flow passage holes 51 penetrating front and back, the side wall of the eccentric section 21 is provided with side holes 52 communicating with the corresponding flow passage holes 51, and a passage for oil to flow is formed between the flow passage holes 51 and the side holes 52. In the structure, the arrangement of the flow passage hole 51 and the side hole 52 reduces the weight of the whole crankshaft structure, and can reduce the rotational inertia of the crankshaft structure in the operation process of the motor; the flow passage hole 51 is linked together with the side opening 52, and form the passageway that supplies fluid to flow between the two, at the motor operation in-process, can lead fluid to the bent axle inside the structure, can cool off, lubricate cylindrical roller on the one hand, guarantee cylindrical roller's even running, on the other hand can take out the inside impurity particle of bent axle structure, filter at the motor draining port oil tank that flows back along with fluid, avoid the extrusion wear between the cylindrical roller to life has been prolonged.
The side wall of the eccentric section 21 is circumferentially provided with a groove 22, the position of the groove 22 corresponds to the position of the spacer ring 11, and a side hole is formed in the groove 22. In this structure, receive the injecing of spacer ring 11 position, the cylindrical roller equipartition is in the both sides of spacer ring 11, and the setting of slot 22 makes and leaves more spaces between the lateral wall of spacer ring 11 and eccentric section 21, and fluid gets into the back from the runner hole, flows out outside slot 22 by the side opening again, and the inside impurity particle of crankshaft structure takes out, flows back to the oil tank along with fluid at the motor draining port and filters, avoids the extrusion wearing and tearing between the cylindrical roller, increases life.
The crankshaft body 2 further comprises an output shaft section 23, a front bearing section 24 and a rear bearing section 25, the output shaft section 23, the front bearing section 24, the eccentric section 21 and the rear bearing section 25 are sequentially connected and fixed, the axes of the output shaft section 23, the front bearing section 24 and the rear bearing section 25 are on the same straight line, and the axes of the eccentric section 21 and the front bearing section 24 are not on the same straight line.
A first limiting ring 26 and a second limiting ring 27 are coaxially and outwardly fixed at the front end and the rear end of the eccentric section 21 respectively, a first gap 28 is formed between the first limiting ring 26 and the shaft sleeve 1, a second gap 29 is formed between the second limiting ring 27 and the shaft sleeve 1, the end surface of the first cylindrical roller group 31 is in contact with the end surface of the first limiting ring 26, and the end surface of the fourth cylindrical roller group 34 is in contact with the end surface of the second limiting ring 27. In this structure, the first and second retainer rings 26 and 27 are provided to restrict the axial movement of the first and fourth roller sets 31 and 34, thereby ensuring the normal operation of the crankshaft structure.
It should be noted that the above-mentioned embodiments are only preferred embodiments of the present invention, and the scope of the present invention is not limited thereto, and the present invention can also be modified in materials and structures, or replaced by technical equivalents. Therefore, all structural equivalents which may be made by applying the present invention to the specification and drawings, or by applying them directly or indirectly to other related technical fields, are intended to be encompassed by the present invention.

Claims (8)

1. The utility model provides a wear-resisting formula crankshaft structure, includes axle sleeve, bent axle body and multiunit cylinder roller group, the bent axle body include an eccentric section, the axle sleeve cover establish eccentric section on, the multiunit cylinder roller group install the axle sleeve with eccentric section between, its characterized in that: and a gasket is arranged between the adjacent cylindrical roller groups, and the gasket is sleeved on the eccentric section.
2. A wear resistant crankshaft structure as claimed in claim 1, wherein: the number of the cylindrical roller groups is four, the cylindrical roller groups are respectively a first cylindrical roller group, a second cylindrical roller group, a third cylindrical roller group and a fourth cylindrical roller group from front to back, a spacing ring is circumferentially fixed on the inner side wall in the middle of the shaft sleeve, the first cylindrical roller group and the second cylindrical roller group are positioned on one side of the spacing ring, the third cylindrical roller group and the fourth cylindrical roller group are positioned on the other side of the spacing ring, and the gaskets are respectively arranged between the first cylindrical roller group and the second cylindrical roller group and between the third cylindrical roller group and the fourth cylindrical roller group.
3. A wear resistant crankshaft structure as claimed in claim 1, wherein: the hardness of the washer is less than that of the cylindrical roller group.
4. A wear resistant crankshaft structure as claimed in claim 1, wherein: and a gap for oil liquid to flow is reserved between the gasket and the eccentric section.
5. A wear resistant crankshaft structure as claimed in claim 2, wherein: the end face of the eccentric section is provided with a plurality of flow passage holes which are communicated front and back, the side wall of the eccentric section is provided with side holes communicated with the corresponding flow passage holes, and a channel for oil to flow is formed between the flow passage holes and the side holes.
6. A wear resistant crankshaft structure in accordance with claim 5, wherein: the lateral wall of eccentric section on circumference be provided with the slot, the slot position with the position of spacer ring corresponding, the side opening set up the slot in.
7. A wear resistant crankshaft structure as claimed in claim 1, wherein: the crankshaft body further comprises an output shaft section, a front bearing section and a rear bearing section, the output shaft section, the front bearing section, the eccentric section and the rear bearing section are sequentially connected and fixed, the axes of the output shaft section, the front bearing section and the rear bearing section are on the same straight line, and the axes of the eccentric section and the front bearing section are not on the same straight line.
8. A wear resistant crankshaft structure as claimed in claim 2, wherein: the front end and the rear end of the eccentric section coaxially extend outwards and are fixedly provided with a first limiting ring and a second limiting ring respectively, a first gap is formed between the first limiting ring and the shaft sleeve, a second gap is formed between the second limiting ring and the shaft sleeve, the end face of the first cylindrical roller group is in contact with the end face of the first limiting ring, and the end face of the fourth cylindrical roller group is in contact with the end face of the second limiting ring.
CN202120132920.4U 2021-01-18 2021-01-18 Wear-resistant crankshaft structure Active CN215110036U (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN202120132920.4U CN215110036U (en) 2021-01-18 2021-01-18 Wear-resistant crankshaft structure
PCT/CN2021/075489 WO2022151548A1 (en) 2021-01-18 2021-02-05 Wear-resistant crankshaft structure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202120132920.4U CN215110036U (en) 2021-01-18 2021-01-18 Wear-resistant crankshaft structure

Publications (1)

Publication Number Publication Date
CN215110036U true CN215110036U (en) 2021-12-10

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ID=79324480

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202120132920.4U Active CN215110036U (en) 2021-01-18 2021-01-18 Wear-resistant crankshaft structure

Country Status (2)

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CN (1) CN215110036U (en)
WO (1) WO2022151548A1 (en)

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007255602A (en) * 2006-03-23 2007-10-04 Ntn Corp Roller bearing for hydraulic pump-motor
CN201461719U (en) * 2009-08-07 2010-05-12 佛山市顺德区中意液压有限公司 Wear-resistant hydraulic motor crankshaft structure
CN201547122U (en) * 2009-12-08 2010-08-11 宁波欧易液压有限公司 Crankshaft assembly for hydraulic motors
CN203009556U (en) * 2012-12-26 2013-06-19 宁波新宏液压有限公司 Crankshaft bearing of hydraulic motor
CN209838929U (en) * 2019-04-08 2019-12-24 宁波欧易液压有限公司 Crankshaft assembly of hydraulic motor
CN211852479U (en) * 2019-11-22 2020-11-03 宁波斯达弗液压传动有限公司 Antipollution crankshaft structure

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Publication number Publication date
WO2022151548A1 (en) 2022-07-21

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