CN211852479U

CN211852479U - Antipollution crankshaft structure

Info

Publication number: CN211852479U
Application number: CN201922044083.5U
Authority: CN
Inventors: 李成志; 胡品容; 张红娟; 潘祥; 师文广; 毛国栋
Original assignee: Ningbo Stf Hydraulic Transmissions Co ltd
Current assignee: Ningbo Stf Hydraulic Transmissions Co ltd
Priority date: 2019-11-22
Filing date: 2019-11-22
Publication date: 2020-11-03
Anticipated expiration: 2029-11-22

Abstract

The utility model discloses an anti-pollution crankshaft structure, which comprises a shaft sleeve, a crankshaft body and a plurality of rows of cylindrical rollers, wherein the crankshaft body comprises an eccentric section, the shaft sleeve is sleeved on the eccentric section, a spacer ring is circumferentially fixed on the inner side wall of the middle part of the shaft sleeve, the plurality of rows of cylindrical rollers are installed between the shaft sleeve and the eccentric section, a plurality of flow passage holes which are communicated from front to back are formed on the end surface of the eccentric section, side holes communicated with corresponding flow passage holes are formed on the side wall of the eccentric section, and a channel for oil supply to flow is formed between the flow passage holes and the side holes; the advantages are better anti-pollution effect and longer service life.

Description

Antipollution crankshaft structure

Technical Field

The utility model relates to a crankshaft structure especially involves an antipollution crankshaft structure.

Background

The crankshaft connecting rod type hydraulic motor is a hydraulic actuating mechanism which can convert hydraulic energy into mechanical energy and output rotary motion, and is formed from oil-feeding disk, oil-distributing disk, shell body, plunger-connecting rod component in the shell body, crankshaft structure and its bearing, in which the crankshaft structure can be used for playing an extremely important role, generally speaking, the crankshaft structure is formed from shaft sleeve, crankshaft body and cylindrical rollers, the centre of the shaft sleeve is circumferentially fixed with a spacing ring, and the shaft sleeve is cover-mounted on the crankshaft body, several rows of cylindrical rollers are placed between the shaft sleeve and crankshaft body,

when hydraulic system long-time operation, if do 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 to peel off, has directly influenced motor life, and the cylindrical roller directly blocks when serious dies, causes bent axle body and axle sleeve to damage, takes place motor trouble.

Disclosure of Invention

The utility model mainly aims to provide an antipollution crankshaft structure, its antipollution effect is better and life is longer.

In order to achieve the above purpose, the utility model adopts the technical scheme that: the utility model provides an antipollution crankshaft structure, includes axle sleeve, bent axle body and multirow cylindrical roller, the bent axle body include an eccentric section, the axle sleeve cover establish eccentric section on, just the inside wall at axle sleeve middle part on circumference be fixed with a spacer ring, the multirow cylindrical roller install the axle sleeve with eccentric section between, the terminal surface of eccentric section on set up the runner hole that link up around a plurality of, the lateral wall of eccentric section on set up and correspond the side opening that the runner hole communicates, the runner hole with the side opening between form the passageway that a confession fluid flows.

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 from front to back, 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.

Antipollution crankshaft structure still include the seal piece, the one end of eccentric section be provided with the confession cylindrical roller stretch into the breach, the seal piece pass through the fix with screw breach department. In this structure, the setting of breach is used for supplying cylindrical roller to place between axle sleeve and the eccentric section, when placing the back that finishes, fixes the seal block in breach department to cylindrical roller has been avoided shifting out from the breach.

The axis of the eccentric section and the axis of the rear bearing section are parallel to each other and form a reference plane, and the plurality of flow passage holes are symmetrically arranged on two sides of the reference plane. The purpose that sets up like this does not influence the centre of gravity position of whole bent axle structure, makes its rotation more steady.

The number of the flow channel holes is two, and correspondingly, the number of the side holes is also two. In this structure, at the motor operation in-process, two runner holes do benefit to and lead fluid to crankshaft structure inside fast, can cool off, lubricate cylindrical roller on the one hand, and on the other hand can take out the inside impurity granule of crankshaft structure.

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 groove width of the groove is smaller than the width of the spacer ring. The aim is not to influence the normal operation of the cylindrical roller.

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, and the widths of the first gap and the second gap are smaller than the diameter of the cylindrical roller. In this structure, the effect of restriction cylindrical roller axial displacement is played in the setting of first spacing ring and second spacing ring, and the ring width in first clearance and second clearance all is less than cylindrical roller's diameter, then shifts out from first clearance and second clearance in order to prevent cylindrical roller, and in addition, first clearance and second clearance still provide the space that supplies fluid to flow out, guarantee the normal cycle of fluid.

Compared with the prior art, the utility model has the advantages of: the arrangement of the flow passage hole and the side hole reduces the weight of the whole crankshaft structure, and can reduce the rotational inertia of the crankshaft structure in the running process of the motor; the flow passage hole is communicated with the side hole, a passage for oil to flow is formed between the flow passage hole and the side hole, and the oil can be introduced into the crankshaft structure in the operation process of the motor, so that the cylindrical roller can be cooled and lubricated to ensure the stable operation of the cylindrical roller, and the impurity particles in the crankshaft structure can be taken out and flow back to an oil tank along with the oil at an oil drainage port of the motor to be filtered, thereby avoiding the extrusion abrasion among the cylindrical rollers and prolonging the service life; the utility model discloses the antipollution effect is better and life is longer.

Drawings

Fig. 1 is a schematic perspective view of the present invention;

FIG. 2 is a schematic structural view of the present invention in an exploded state;

fig. 3 is a cross-sectional view of the present invention;

FIG. 4 is a schematic structural view of the crankshaft body of the present invention;

fig. 5 is a schematic plan view of the crankshaft body of the present invention.

Detailed Description

The invention is described in further detail below with reference to the embodiments of the drawings.

The first embodiment is as follows: as shown in the figure, an antipollution crankshaft structure, including axle sleeve 1, bent axle body 2 and multirow cylindrical roller 3, bent axle body 2 includes an eccentric section 4, axle sleeve 1 cover is established on eccentric section 4, and circumference is fixed with a spacer ring 11 on the inside wall at axle sleeve 1 middle part, multirow cylindrical roller 3 installs between axle sleeve 1 and eccentric section 4, set up a plurality of runner holes 41 that link up around the front and back on the terminal surface of eccentric section 4, set up the side opening 40 that is linked together with corresponding runner hole 41 on the lateral wall of eccentric section 4, form the passageway that a confession fluid flows between runner hole 41 and the side opening 40.

Example two: as shown in the figure, the other structures are the same as the first embodiment, and the difference is that the crankshaft body 2 further includes an output shaft section 5, a front bearing section 6 and a rear bearing section 7, the output shaft section 5, the front bearing section 6, the eccentric section 4 and the rear bearing section 7 are sequentially connected and fixed from front to back, the axes of the output shaft section 5, the front bearing section 6 and the rear bearing section 7 are on the same straight line, and the axes of the eccentric section 4 and the front bearing section 6 are not on the same straight line.

In this embodiment, antipollution crankshaft structure still includes a seal piece 8, and the one end of eccentric section 4 is provided with the breach 42 that supplies cylindrical roller 3 to stretch into, and seal piece 8 passes through the screw 81 to be fixed in breach 42 department. In this structure, the setting of breach 42 is used for supplying cylindrical roller 3 to place between axle sleeve 1 and the eccentric section 4, and after placing and finishing, fixes seal 8 in breach 42 department to cylindrical roller 3 has been avoided shifting out from breach 42.

In this embodiment, the axis of the eccentric section 4 and the axis of the rear bearing section 7 are parallel to each other and form a reference plane, and the plurality of flow passage holes 41 are symmetrically arranged on both sides of the reference plane. The purpose that sets up like this does not influence the centre of gravity position of whole bent axle structure, makes its rotation more steady.

In this embodiment, the number of the flow passage holes 41 is two, and correspondingly, the number of the side holes 40 is also two. In this structure, at the motor operation in-process, two runner holes 41 do benefit to and lead fluid to the bent axle structure inside fast, can cool off, lubricate cylindrical roller 3 on the one hand, and on the other hand can take out the inside impurity particle of bent axle structure.

Example three: as shown, the other structure is the same as the embodiment, but the difference is that in the embodiment, a groove 43 is circumferentially provided on the sidewall of the eccentric section, the position of the groove 43 corresponds to the position of the spacer ring 11, and the side hole 40 is opened in the groove 43. In this structure, receive the injeciton of spacer ring 11 position, cylindrical roller 3 equipartition is in the both sides of spacer ring 11, and the setting of slot 43 makes and leaves more spaces between the lateral wall of spacer ring 11 and eccentric section 4, and fluid gets into the back from runner hole 41, flows out outside slot 43 by side opening 40 again, and the inside impurity particle of crankshaft structure takes out, flows back to the oil tank at the motor draining port along with fluid and filters, avoids the extrusion wear between the cylindrical roller 3, increases life.

In this embodiment, the width of the groove 43 is smaller than the width of the spacer ring 11. The purpose of which is not to affect the normal operation of the cylindrical rollers 3.

In this embodiment, the front end and the rear end of the eccentric section 4 are respectively fixed with a first limit ring 44 and a second limit ring 45 extending coaxially and outwardly, a first gap 46 is formed between the first limit ring 44 and the shaft sleeve 1, a second gap 47 is formed between the second limit ring 45 and the shaft sleeve 1, and the widths of the first gap 46 and the second gap 47 are both smaller than the diameter of the cylindrical roller 3. In the structure, the arrangement of the first limit ring 44 and the second limit ring 45 plays a role in limiting the axial movement of the cylindrical roller 3, the ring widths of the first gap 46 and the second gap 47 are smaller than the diameter of the cylindrical roller 3, so that the cylindrical roller 3 is prevented from moving out of the first gap 46 and the second gap 47, in addition, the first gap 46 and the second gap 47 also provide a space for oil to flow out, and the normal circulation of the oil is ensured.

Claims

1. The utility model provides an antipollution crankshaft structure, includes axle sleeve, bent axle body and multirow cylindrical roller, the bent axle body include an eccentric section, the axle sleeve cover establish eccentric section on, just the inside wall at axle sleeve middle part on circumference be fixed with a spacer ring, the multirow cylindrical roller install the axle sleeve with eccentric section between, its characterized in that: 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.

2. The anti-contamination crankshaft structure according to 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 from front to back, 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.

3. An anti-contamination crankshaft structure according to claim 2, characterized in that: antipollution crankshaft structure still include the seal piece, the one end of eccentric section be provided with the confession cylindrical roller stretch into the breach, the seal piece pass through the fix with screw breach department.

4. An anti-contamination crankshaft structure according to claim 2, characterized in that: the axis of the eccentric section and the axis of the rear bearing section are parallel to each other and form a reference plane, and the plurality of flow passage holes are symmetrically arranged on two sides of the reference plane.

5. An anti-contamination crankshaft structure according to claim 4, characterized in that: the number of the flow channel holes is two, and correspondingly, the number of the side holes is also two.

6. The anti-contamination crankshaft structure according to claim 1, 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. An anti-contamination crankshaft structure according to claim 6, characterized in that: the groove width of the groove is smaller than the width of the spacer ring.

8. The anti-contamination crankshaft structure according to claim 1, 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, and the widths of the first gap and the second gap are smaller than the diameter of the cylindrical roller.