CN211231292U - Axle sleeve, hinge structure and excavator - Google Patents
Axle sleeve, hinge structure and excavator Download PDFInfo
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- CN211231292U CN211231292U CN201922449814.4U CN201922449814U CN211231292U CN 211231292 U CN211231292 U CN 211231292U CN 201922449814 U CN201922449814 U CN 201922449814U CN 211231292 U CN211231292 U CN 211231292U
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Abstract
The utility model provides an axle sleeve, hinge structure and excavator relates to lubricated articulated technical field, and the axle sleeve cup joints at the round pin epaxially, and the axle sleeve includes: the sleeve body comprises a first end part and a second end part which are opposite, the built-in sealing ring is arranged on the inner side of the first end part, and the built-in sealing ring is coaxial with the sleeve body; the second end is used for being abutted against the external sealing ring so that the external sealing ring, the inner wall of the sleeve body, the outer wall of the pin shaft and the built-in sealing ring form an oil storage cavity. During the use, can cup joint two axle sleeves respectively the interference in the pinhole of first articulated elements, penetrate the round pin axle after, recycle the outside sealing washer with the second end seal of axle sleeve, built-in sealing washer, axle sleeve inner wall, round pin axle outer wall and outside sealing washer enclose into the oil storage chamber, control two oil storage chambeies at both ends and do not communicate, so, lubricating oil need not be full of whole pinhole, can save lubricating oil.
Description
Technical Field
The utility model belongs to the technical field of lubricated articulated technique and specifically relates to a shaft sleeve, hinge structure and excavator are related to.
Background
At present, in an excavator working device, a hinge joint of two structural members lubricates a pin shaft by matching a shaft sleeve and a sealing ring with oil storage, so that the abnormal abrasion phenomenon caused by locking of the pin shaft is prevented.
For example, in the hinged relationship of the arm to the bucket, the bucket is provided with a pair of spaced lugs, the end of the arm has a pin hole through which a pin passes, and the pin is fixedly connected to the lugs so that the bucket can rotate relative to the arm. Be equipped with two axle sleeves in the pinhole, two axle sleeves are located the both ends of pinhole, and after two axle sleeves were inserted to the round pin axle, utilize the sealing washer sealed with the axle sleeve in the outer end of two axle sleeves to at the inside sealed oil storage chamber that forms of pinhole, be used for storing lubricating oil.
The problems of the existing shaft sleeve are that: the two shaft sleeves are communicated, when lubricating oil is injected into the oil storage cavity, the left shaft sleeve and the right shaft sleeve can be fully stored after the oil storage cavity is fully filled, and only the shaft sleeve part which needs to be lubricated is wasted seriously; meanwhile, because the lubricating oil at the middle position of the oil storage cavity is long in storage time and easy to deteriorate, the pin shaft and the structural member rotate and extrude to mix the lubricating oil at the middle position of the oil storage cavity with the lubricating oil in the shaft sleeve easily during working, and the lubricating effect is affected.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide an axle sleeve, hinge structure and excavator to alleviate current hinge structure position department lubricating oil transition and filled, the extravagant problem that causes, and the lubrication of pinhole mid portion is rotten easily, and rotten lubricating oil mixes with the lubricating oil in the axle sleeve, influences the problem of lubricated effect.
In a first aspect, the embodiment of the present invention provides a shaft sleeve, the shaft sleeve is cup jointed at the round pin epaxially, the shaft sleeve includes: the sleeve comprises a sleeve body and a built-in sealing ring, wherein the sleeve body comprises a first end part and a second end part which are opposite, the built-in sealing ring is arranged on the inner side of the first end part, and the built-in sealing ring is coaxial with the sleeve body; the second end portion is used for being abutted against an external sealing ring, so that the external sealing ring, the inner wall of the sleeve body, the outer wall of the pin shaft and the built-in sealing ring form an oil storage cavity.
Furthermore, an annular oil inlet groove is formed in the outer wall of the sleeve body, an oil guide through hole communicated with the inner wall of the sleeve body is formed in the bottom of the annular oil inlet groove, and the annular oil inlet groove is used for being aligned to an oil injection port in an articulated piece sleeved on the outer side of the shaft sleeve.
Further, the number of the oil guide through holes is multiple.
Furthermore, an annular positioning edge extending inwards in the radial direction is arranged on the inner wall of the sleeve body, and the annular positioning edge is used for stopping and positioning the built-in sealing ring in the axial direction.
Furthermore, an oil storage main groove aligned with the annular oil inlet groove is formed in the inner wall of the shaft sleeve, and an inner port of the oil guide through hole is communicated with the oil storage main groove.
Further, be provided with an oil storage branch groove on the inner wall of axle sleeve, follow the first end of the cover body is towards second end direction, an oil storage branch groove is the spiral and changes the extension setting, just an oil storage branch groove with the oil storage owner groove intercommunication.
Further, the oil storage branch groove is two, follows the first end of the cover body is to second end direction, one of them the oil storage branch groove sets up along clockwise spiral extension, and another the oil storage branch groove sets up along anticlockwise spiral extension.
In a second aspect, an embodiment of the present invention provides a hinge structure, where the hinge structure includes a first hinge element, a second hinge element, a pin, an external sealing ring, and the shaft sleeve;
the number of the external sealing rings and the number of the shaft sleeves are two;
the first hinge part is provided with a pin hole, the two shaft sleeves are respectively and fixedly arranged at two ends of the pin hole, and the first end part of each shaft sleeve is closer to the inner part of the pin hole than the second end part;
the pin shaft penetrates through the pin hole, the external sealing ring is sleeved on the pin shaft and is abutted against the second end part of the shaft sleeve, so that two ends of the first articulated element form an oil storage cavity respectively;
the end part of the pin shaft is fixedly connected with the second hinge piece.
Further, the pin hole middle portion of the first hinge member has an annular weight-reducing groove for reducing the weight of the first hinge member.
In a third aspect, an embodiment of the present invention provides an excavator, which includes the above hinge structure.
The embodiment of the utility model provides a pair of axle sleeve and hinge structure, during the use, can cup joint two axle sleeves interference respectively in the pinhole of first articulated elements, and two axle sleeves are located the both ends of pinhole respectively, and the first end of axle sleeve is closer to the mid portion of pinhole, penetrate behind the round pin axle, recycle outside seal circle and seal the second end of axle sleeve, built-in sealing washer, the axle sleeve inner wall, round pin axle outer wall and outside seal circle become the oil storage chamber, lubricating oil is stored in the oil storage chamber, and control two oil storage chambers at both ends and not communicate, therefore, lubricating oil need not be full of whole pinhole, can save lubricating oil, and the problem of the lubricating oil quality that the lubricating oil of pinhole mid portion rotten influences both ends axle sleeve position department among the prior art has been avoided.
The embodiment of the utility model provides a pair of excavator, the excavator includes foretell hinge structure. Because the embodiment of the utility model provides an excavator has quoted foretell hinge structure, so, the utility model provides an excavator also possesses hinge structure's advantage.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in 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 creative efforts.
Fig. 1 is a schematic view of a shaft sleeve according to an embodiment of the present invention;
fig. 2 is an exploded view of a bushing according to an embodiment of the present invention;
fig. 3 is a schematic view of a shaft sleeve according to an embodiment of the present invention in use;
fig. 4 is a partially enlarged view of a position a in fig. 3.
Icon: 100-shaft sleeve; 110-a sheath body; 120-annular oil inlet groove; 300-built-in sealing ring; 400-a first articulation; 410-oil cup; 500-a second articulation; 600-a pin shaft; 610-pin holes; 700-outer seal ring.
Detailed Description
The technical solution of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood 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 work belong to the protection scope of the present invention.
As shown in fig. 1-4, the embodiment of the present invention provides a shaft sleeve 100 can be sleeved on a pin 600, and the shaft sleeve 100 and the pin 600 can rotate relatively, the shaft sleeve 100 includes: the sealing sleeve comprises a sleeve body 110 and an inner sealing ring 300, wherein the sleeve body 110 comprises a first end part and a second end part which are opposite, the inner sealing ring 300 is arranged on the inner side of the first end part, and the inner sealing ring 300 is coaxial with the sleeve body 110; the second end is used for abutting against the external sealing ring 700, so that the external sealing ring 700, the inner wall of the sleeve body 110, the outer wall of the pin shaft and the built-in sealing ring 300 form an oil storage cavity. The built-in seal ring 300 serves to prevent the lubricating oil from flowing into the middle portion of the pin hole 610.
During the use, can overlap two axle sleeves 100 respectively the interference and cup joint in the pinhole 610 of first articulated elements 400, and two axle sleeves 100 are located the both ends of pinhole 610 respectively, and axle sleeve 100 first end is more close to the mid portion of pinhole 610, penetrates the round pin axle after, recycles outside sealing washer 700 and seals the second end of axle sleeve 100, the both ends of round pin axle again with second articulated elements 500 fixed connection. The built-in sealing ring 300, the inner wall of the shaft sleeve 100, the outer wall of the pin shaft and the external sealing ring 700 form an oil storage cavity in a surrounding mode, lubricating oil is stored in the oil storage cavity, and the two oil storage cavities at the left end and the right end are not communicated, so that the lubricating oil does not need to be filled in the whole pin hole 610, the lubricating oil can be saved, and the problem that the lubricating oil quality of the middle part of the pin hole 610 affects the lubricating oil quality of the shaft sleeves 100 at the two ends in the prior art is.
An annular oil inlet groove 120 is formed in the outer wall of the sleeve body 110, an oil guide through hole communicated with the inner wall of the sleeve body 110 is formed in the bottom of the annular oil inlet groove 120, and the annular oil inlet groove 120 is used for being aligned with an oil injection port in an articulated piece sleeved on the outer side of the shaft sleeve 100.
When the shaft sleeve 100 is used, the shaft sleeve is in interference fit with the inner wall of the pin hole 610 of the first hinge member 400, the first hinge member 400 is provided with an oil cup 410 penetrating through the inner wall and the outer wall of the first hinge member 400, and lubricating oil can be injected into the oil storage cavity through the oil cup 410. The lubricating oil is dropped into the annular oil inlet groove 120 through the oil cup 410, and the lubricating oil flows inwards from the oil guide through hole and enters the oil storage cavity after filling the annular oil inlet groove 120, so that the addition of the lubricating oil is completed.
In order to accelerate the oil storage cavity filled with the lubricating oil, the number of the oil guiding through holes on the shaft sleeve 100 is multiple, and the multiple oil guiding through holes are uniformly arranged along the annular direction of the annular oil inlet groove 120 at intervals.
An annular positioning edge extending inwards in the radial direction is arranged on the inner wall of the sleeve body 110, and the annular positioning edge is used for stopping and positioning the built-in sealing ring 300 in the axial direction.
In order to avoid the problem that the built-in sealing ring 300 is inclined and dislocated when the shaft sleeve 100 is in interference fit with the first hinge 400 and the pin shaft 600 is inserted, the built-in sealing ring 300 and the sleeve body 110 are connected into an integral structure. In order to facilitate the installation of the built-in sealing ring 300 and the sleeve body 110, an annular positioning edge is disposed on the inner wall of the first end portion of the sleeve body 110, and the built-in sealing ring 300 abuts against the annular positioning edge, so that the built-in sealing ring 300 and the sleeve body 110 can be ensured to be coaxial.
An oil storage main groove aligned with the annular oil inlet groove 120 is formed in the inner wall of the shaft sleeve 100, and an inner port of the oil guide through hole is communicated with the oil storage main groove.
The lubricating oil entering between the inner wall of the sleeve body 110 and the outer wall of the pin shaft 600 through the oil guide through hole can be stored in the oil storage main groove firstly, and along with the rotation of the first hinge part 400, the lubricating oil can flow to two sides along the axial direction, so that the shaft sleeve 100 and the pin shaft 600 are lubricated.
Be provided with the oil storage branch groove on the inner wall of axle sleeve 100, follow the first end of the cover body 110 is towards second end direction, the oil storage branch groove is the spiral and changes the extension setting, just the oil storage branch groove with the oil storage owner groove intercommunication.
In order to increase the oil storage capacity of the oil storage cavity and better enable lubricating oil to fully contact the surfaces of the sleeve body 110 and the pin shaft 600, an oil storage branch groove which extends spirally along the axial direction is arranged on the inner wall of the sleeve body 110 and is communicated with the oil storage main groove, and the lubricating oil can flow into the oil storage branch groove from the oil storage main groove.
In this embodiment, the number of the oil storage branch grooves is two, and the oil storage branch groove extends spirally in the clockwise direction and the oil storage branch groove extends spirally in the counterclockwise direction along the direction from the first end to the second end of the sleeve body 110. The two oil reservoirs with opposite spiral directions can provide more oil storage space and cover most of the contact surface between the shaft sleeve 100 and the pin 600.
The embodiment of the present invention provides a hinge structure, which includes a first hinge 400, a second hinge 500, a pin, an external sealing ring 700, and the shaft sleeve 100; the number of the external sealing rings 700 and the number of the shaft sleeves 100 are two; the first hinge member 400 is provided with a pin hole 610, the two shaft sleeves 100 are respectively and fixedly installed at two ends of the pin hole 610, and the first end of the shaft sleeve 100 is closer to the inside of the pin hole 610 than the second end; the pin shaft penetrates through the pin hole 610, and the external sealing ring 700 is sleeved on the pin shaft and is abutted against the second end of the shaft sleeve 100, so that two ends of the first hinge 400 form oil storage cavities respectively; the end of the pin is fixedly connected to the second hinge member 500. During the use, can overlap two axle sleeves 100 respectively the interference and cup joint in the pinhole 610 of first articulated elements 400, and two axle sleeves 100 are located the both ends of pinhole 610 respectively, and the first end of axle sleeve 100 is more close to the mid portion of pinhole 610, penetrate the round pin axle after, recycle outside sealing washer 700 and seal the second end of axle sleeve 100, built-in sealing washer 300, axle sleeve 100 inner wall, round pin axle outer wall and outside sealing washer 700 enclose into the oil storage chamber, lubricating oil is stored in the oil storage chamber, and two oil storage chambers at both ends do not communicate about, therefore, lubricating oil need not be full of whole pinhole 610, lubricating oil can be saved, and the problem that the lubricating oil of pinhole 610 mid portion rotten lubricating oil that influences the lubricating oil quality of both ends axle sleeve 100 position department among the prior art has been avoided.
In order that the weight of the first hinge member 400 may be reduced, the middle portion of the pin hole 610 of the first hinge member 400 has an annular weight-reduction groove for reducing the weight of the first hinge member 400. That is, the pin hole 610 has a stepped hole shape, and the holes at both end portions have a small diameter and the hole at the middle portion has a large diameter.
The embodiment of the utility model provides a pair of excavator, the excavator includes foretell hinge structure. Because the embodiment of the utility model provides an excavator has quoted foretell hinge structure, so, the utility model provides an excavator also possesses hinge structure's advantage.
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 (10)
1. The utility model provides a shaft sleeve, its characterized in that, shaft sleeve (100) cup joints on the round pin axle, shaft sleeve (100) include: the sealing sleeve comprises a sleeve body (110) and an internal sealing ring (300), wherein the sleeve body (110) comprises a first end part and a second end part which are opposite, the internal sealing ring (300) is installed on the inner side of the first end part, and the internal sealing ring (300) is coaxial with the sleeve body (110); the second end portion is used for being abutted against an external sealing ring (700) so that the external sealing ring (700), the inner wall of the sleeve body (110), the outer wall of the pin shaft (600) and the built-in sealing ring (300) form an oil storage cavity in an enclosing mode.
2. The shaft sleeve according to claim 1, wherein an annular oil inlet groove (120) is formed in an outer wall of the sleeve body (110), an oil guiding through hole communicated with an inner wall of the sleeve body (110) is formed in the bottom of the annular oil inlet groove (120), and the annular oil inlet groove (120) is used for aligning with an oil injection port on an articulated piece sleeved on the outer side of the shaft sleeve (100).
3. The bushing as claimed in claim 2, wherein said oil conducting through hole is plural in number.
4. Bushing according to claim 1, wherein the inner wall of the bushing body (110) is provided with a radially inwardly extending annular positioning edge for axially retaining the inner sealing ring (300).
5. The shaft sleeve as claimed in claim 2, wherein an oil storage main groove aligned with the annular oil inlet groove (120) is provided on an inner wall of the shaft sleeve (100), and an inner port of the oil guide through hole communicates with the oil storage main groove.
6. The bushing as claimed in claim 5, wherein the inner wall of the bushing (100) has a branch oil storage groove, the branch oil storage groove extends along the first end of the bushing body (110) toward the second end, and the branch oil storage groove is connected to the main oil storage groove.
7. The bushing as defined by claim 6, wherein said oil storage grooves are two, and extend along a direction from the first end to the second end of said sleeve body (110), one of said oil storage grooves extends spirally in a clockwise direction, and the other of said oil storage grooves extends spirally in a counterclockwise direction.
8. A hinge structure, characterized in that it comprises a first hinge (400), a second hinge (500), a pin, an external seal (700), and a bushing (100) according to any one of claims 1 to 7;
the number of the external sealing rings (700) and the number of the shaft sleeves (100) are two;
a pin hole (610) is formed in the first hinge (400), the two shaft sleeves (100) are respectively and fixedly installed at two ends of the pin hole (610), and the first end of each shaft sleeve (100) is closer to the inner part of the pin hole (610) than the second end;
the pin shaft penetrates through the pin hole (610), the external sealing ring (700) is sleeved on the pin shaft and is abutted against the second end part of the shaft sleeve (100), so that two ends of the first hinge part (400) form oil storage cavities respectively;
the end of the pin shaft is fixedly connected with a second hinge member (500).
9. The hinge structure according to claim 8, wherein the pin hole (610) of the first hinge member (400) has an annular weight-reduction groove at a middle portion thereof for reducing the weight of the first hinge member (400).
10. An excavator, characterized in that the excavator comprises the hinge structure of claim 8 or 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922449814.4U CN211231292U (en) | 2019-12-30 | 2019-12-30 | Axle sleeve, hinge structure and excavator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922449814.4U CN211231292U (en) | 2019-12-30 | 2019-12-30 | Axle sleeve, hinge structure and excavator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211231292U true CN211231292U (en) | 2020-08-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922449814.4U Active CN211231292U (en) | 2019-12-30 | 2019-12-30 | Axle sleeve, hinge structure and excavator |
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| Country | Link |
|---|---|
| CN (1) | CN211231292U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113002255A (en) * | 2021-02-23 | 2021-06-22 | 赛格威科技有限公司 | Suspension assembly and all-terrain vehicle with same |
-
2019
- 2019-12-30 CN CN201922449814.4U patent/CN211231292U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113002255A (en) * | 2021-02-23 | 2021-06-22 | 赛格威科技有限公司 | Suspension assembly and all-terrain vehicle with same |
| CN113002255B (en) * | 2021-02-23 | 2023-01-20 | 赛格威科技有限公司 | Suspension assembly and all-terrain vehicle with same |
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