CN207376687U - Center-rotary joint and hydraulic crawler excavator - Google Patents
Center-rotary joint and hydraulic crawler excavator Download PDFInfo
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- CN207376687U CN207376687U CN201721457421.2U CN201721457421U CN207376687U CN 207376687 U CN207376687 U CN 207376687U CN 201721457421 U CN201721457421 U CN 201721457421U CN 207376687 U CN207376687 U CN 207376687U
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- rotating shaft
- revolving body
- center
- rotary joint
- ring
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Abstract
The utility model discloses a kind of center-rotary joints, revolving body and rotating shaft including coaxial arrangement, O-ring is installed between the revolving body and the rotating shaft, it is also equipped with improving the supporting item of the concentricity between the revolving body and the rotating shaft between the revolving body and the rotating shaft, to prevent the O-ring eccentric wear.By installing supporting item between revolving body and rotating shaft, so as to improve the concentricity of revolving body and rotating shaft, prevent the O-ring installed between revolving body and rotating shaft from eccentric wear occurs, extend the center-rotary joint service life, oil leakage fault no longer occurs in hydraulic crawler excavator.On this basis, the utility model additionally provides a kind of hydraulic crawler excavator using the center-rotary joint.
Description
Technical field
The utility model is related to pipeline connection joint technique field, more particularly to a kind of center-rotary joint and hydraulic excavating
Machine.
Background technology
At present large hydraulic excavator center-rotary joint due to work operating mode be mostly mine, inclement condition is susceptible to
Oil leakage fault, caused by being carried out to failure cause the study found that eccentric wear occurs for O-ring between revolving body and rotating shaft
There is oil leakage fault.
Utility model content
The purpose of this utility model is to provide a kind of center-rotary joint and hydraulic crawler excavator, to solve in the prior art
Eccentric wear, which occurs, for the O-ring between existing revolving body and rotating shaft causes the technical issues of oil leakage fault occur.
Center-rotary joint provided by the utility model, revolving body and rotating shaft including coaxial arrangement, the revolving body
O-ring between the rotating shaft is installed, is also equipped with improving described return between the revolving body and the rotating shaft
The supporting item of concentricity between swivel and the rotating shaft, to prevent the O-ring eccentric wear.
Further, the supporting item is two support rings between the revolving body and the rotating shaft.
Further, internal frame dustband is installed between the revolving body and the rotating shaft.
Further, rotating seal ring is installed between the revolving body and the rotating shaft.
Further, the rotating seal ring installed between the revolving body and the rotating shaft is multiple.
Further, it is equipped with to prevent the rotating shaft axial float between the revolving body and the rotating shaft
Limiting plate.
Further, the limiting plate is stuck in the revolving body lower end and is connected with the revolution shaft lower end.
Further, the revolving body lower end is equipped with end cap.
Further, O-ring is installed between the end cap and the revolving body.
Center-rotary joint provided by the utility model, has the following advantages that：
By installing supporting item between revolving body and rotating shaft, so as to improve the concentricity of revolving body and rotating shaft, prevent
Non-return turns the O-ring installed between rotating shaft and eccentric wear occurs, and extends the center-rotary joint service life, hydraulic crawler excavator no longer goes out
Existing oil leakage fault.
In addition, the utility model additionally provides a kind of hydraulic crawler excavator, including above-mentioned center-rotary joint.
Using the hydraulic crawler excavator of above-mentioned center-rotary joint, there is higher safety in utilization and reliability.
Description of the drawings
It, below will be right in order to illustrate more clearly of specific embodiment of the present invention or technical solution of the prior art
Specific embodiment or attached drawing needed to be used in the description of the prior art are briefly described, it should be apparent that, it describes below
In attached drawing be the utility model some embodiments, for those of ordinary skill in the art, do not paying creativeness
On the premise of work, other attached drawings are can also be obtained according to these attached drawings.
Fig. 1 is the center-rotary joint schematic diagram that the utility model embodiment one provides
Fig. 2 is the center-rotary joint schematic diagram that the utility model embodiment two provides.
Fig. 3 is the center-rotary joint schematic diagram that the utility model embodiment three provides
Fig. 4 is the center-rotary joint schematic diagram that the utility model embodiment four provides.
Fig. 5 is the center-rotary joint schematic diagram that the utility model embodiment five provides.
Attached drawing is attached：1- revolving bodies；2- rotating shafts；3-O type circles；4- supporting items；5- end caps；6- hexagon-headed bolts；7- bullets
Spring washer；8- internal frame dustbands；9- rotating seal rings；10- limiting plates.
Specific embodiment
The technical solution of the utility model is clearly and completely described below in conjunction with attached drawing, it is clear that described
Embodiment is the utility model part of the embodiment, instead of all the embodiments.Based on the embodiment in the utility model, sheet
Field those of ordinary skill all other embodiments obtained without making creative work, belong to this practicality
Novel protected scope.
Embodiment one：
Fig. 1 is the center-rotary joint schematic diagram that the utility model embodiment one provides；As shown in Figure 1, the utility model
The center-rotary joint that embodiment one provides, revolving body 1 and rotating shaft 2 including coaxial arrangement, revolving body 1 and rotating shaft 2 it
Between O-ring 3 is installed, be also equipped with improving between revolving body 1 and rotating shaft 2 coaxial between revolving body 1 and rotating shaft 2
The supporting item 4 of degree, to prevent 3 eccentric wear of O-ring.
By installing supporting item 4 between revolving body 1 and rotating shaft 2, so as to improve the coaxial of revolving body 1 and rotating shaft 2
Degree prevents the O-ring installed between revolving body 1 and rotating shaft 23 from eccentric wear occurs, and extends the center-rotary joint service life, hydraulic excavating
No longer there is oil leakage fault in machine.
Specifically, supporting item 4 is two support rings between revolving body 1 and rotating shaft 2.
Specifically, the lower end of revolving body 1 is equipped with end cap 5.
Further, end cap 5 is fixed on the lower end of revolving body 1 by hexagon-headed bolt 6 and spring washer 7.
Embodiment two：
Fig. 2 is the center-rotary joint schematic diagram that the utility model embodiment two provides；As shown in Fig. 2, the utility model
The center-rotary joint that embodiment two provides, revolving body 1 and rotating shaft 2 including coaxial arrangement, revolving body 1 and rotating shaft 2 it
Between O-ring 3 is installed, be also equipped with improving between revolving body 1 and rotating shaft 2 coaxial between revolving body 1 and rotating shaft 2
The supporting item 4 of degree, to prevent 3 eccentric wear of O-ring.
By installing supporting item 4 between revolving body 1 and rotating shaft 2, so as to improve the coaxial of revolving body 1 and rotating shaft 2
Degree prevents the O-ring installed between revolving body 1 and rotating shaft 23 from eccentric wear occurs, and extends the center-rotary joint service life, hydraulic excavating
No longer there is oil leakage fault in machine.
Specifically, supporting item 4 is two support rings between revolving body 1 and rotating shaft 2.
Specifically, the lower end of revolving body 1 is equipped with end cap 5.
Further, end cap 5 is fixed on the lower end of revolving body 1 by hexagon-headed bolt 6 and spring washer 7.
Specifically, internal frame dustband 8 is installed between revolving body 1 and rotating shaft 2.
Internal frame dustband 8, it is more relatively reliable than existing external framework dustproof loop structure, using internal frame dustband 8
The helmet that external framework dustproof loop needs is eliminated afterwards, and enhancing heat dissipation enhances sealing reliability.
Embodiment three：
Fig. 3 is the center-rotary joint schematic diagram that the utility model embodiment three provides；As shown in figure 3, the utility model
The center-rotary joint that embodiment three provides, revolving body 1 and rotating shaft 2 including coaxial arrangement, revolving body 1 and rotating shaft 2 it
Between O-ring 3 is installed, be also equipped with improving between revolving body 1 and rotating shaft 2 coaxial between revolving body 1 and rotating shaft 2
The supporting item 4 of degree, to prevent 3 eccentric wear of O-ring.
By installing supporting item 4 between revolving body 1 and rotating shaft 2, so as to improve the coaxial of revolving body 1 and rotating shaft 2
Degree prevents the O-ring installed between revolving body 1 and rotating shaft 23 from eccentric wear occurs, and extends the center-rotary joint service life, hydraulic excavating
No longer there is oil leakage fault in machine.
Specifically, supporting item 4 is two support rings between revolving body 1 and rotating shaft 2.
Specifically, the lower end of revolving body 1 is equipped with end cap 5.
Further, end cap 5 is fixed on the lower end of revolving body 1 by hexagon-headed bolt 6 and spring washer 7.
Specifically, internal frame dustband 8 is installed between revolving body 1 and rotating shaft 2.
Internal frame dustband 8, it is more relatively reliable than existing external framework dustproof loop structure, using internal frame dustband 8
The helmet that external framework dustproof loop needs is eliminated afterwards, and enhancing heat dissipation enhances sealing reliability.
Specifically, rotating seal ring 9 is installed between revolving body 1 and rotating shaft 2.
Preferably, the rotating seal ring 9 installed between revolving body 1 and rotating shaft 2 is multiple.
Multiple rotating seal rings 9 further improve the leakproofness between revolving body 1 and rotating shaft 2.
Rotating seal ring 9 has the following advantages that：
(1) good stability of the dimension.
(2) it is high pressure resistant, wear-resistant, high temperature resistant.
(3) most of medium is resistant to, chemical resistance is strong.
(4) installation space is small, and groove is simple, has lubricating cavity.
(5) require the occasion of piston rod or piston seal that can provide.
(6) frictional force is small, and when startup does not creep, even if also can guarantee constant movement at low speeds.
Example IV：
Fig. 4 is the center-rotary joint schematic diagram that the utility model embodiment four provides；As shown in figure 4, the utility model
The center-rotary joint that example IV provides, revolving body 1 and rotating shaft 2 including coaxial arrangement, revolving body 1 and rotating shaft 2 it
Between O-ring 3 is installed, be also equipped with improving between revolving body 1 and rotating shaft 2 coaxial between revolving body 1 and rotating shaft 2
The supporting item 4 of degree, to prevent 3 eccentric wear of O-ring.
By installing supporting item 4 between revolving body 1 and rotating shaft 2, so as to improve the coaxial of revolving body 1 and rotating shaft 2
Degree prevents the O-ring installed between revolving body 1 and rotating shaft 23 from eccentric wear occurs, and extends the center-rotary joint service life, hydraulic excavating
No longer there is oil leakage fault in machine.
Specifically, supporting item 4 is two support rings between revolving body 1 and rotating shaft 2.
Specifically, the lower end of revolving body 1 is equipped with end cap 5.
Further, end cap 5 is fixed on the lower end of revolving body 1 by hexagon-headed bolt 6 and spring washer 7.
Specifically, internal frame dustband 8 is installed between revolving body 1 and rotating shaft 2.
Internal frame dustband 8, it is more relatively reliable than existing external framework dustproof loop structure, using internal frame dustband 8
The helmet that external framework dustproof loop needs is eliminated afterwards, and enhancing heat dissipation enhances sealing reliability.
Specifically, rotating seal ring 9 is installed between revolving body 1 and rotating shaft 2.
Preferably, the rotating seal ring 9 installed between revolving body 1 and rotating shaft 2 is multiple.
Multiple rotating seal rings 9 further improve the leakproofness between revolving body 1 and rotating shaft 2.
Specifically, it is equipped with to prevent the limit of 2 axial float of rotating shaft between 2 lower end of 1 lower end of revolving body and rotating shaft
Position plate 10.
Preferably, limiting plate 10 is stuck in 1 lower end of revolving body and is connected with 2 lower end of rotating shaft.
Embodiment five：
Fig. 5 is the center-rotary joint schematic diagram that the utility model embodiment five provides；As shown in figure 5, the utility model
The center-rotary joint that embodiment five provides, revolving body 1 and rotating shaft 2 including coaxial arrangement, revolving body 1 and rotating shaft 2 it
Between O-ring 3 is installed, be also equipped with improving between revolving body 1 and rotating shaft 2 coaxial between revolving body 1 and rotating shaft 2
The supporting item 4 of degree, to prevent 3 eccentric wear of O-ring.
By installing supporting item 4 between revolving body 1 and rotating shaft 2, so as to improve the coaxial of revolving body 1 and rotating shaft 2
Degree prevents the O-ring installed between revolving body 1 and rotating shaft 23 from eccentric wear occurs, and extends the center-rotary joint service life, hydraulic excavating
No longer there is oil leakage fault in machine.
Specifically, supporting item 4 is two support rings between revolving body 1 and rotating shaft 2.
Specifically, the lower end of revolving body 1 is equipped with end cap 5.
Further, end cap 5 is fixed on the lower end of revolving body 1 by hexagon-headed bolt 6 and spring washer 7.
Specifically, internal frame dustband 8 is installed between revolving body 1 and rotating shaft 2.
Internal frame dustband 8, it is more relatively reliable than existing external framework dustproof loop structure, using internal frame dustband 8
The helmet that external framework dustproof loop needs is eliminated afterwards, and enhancing heat dissipation enhances sealing reliability.
Specifically, rotating seal ring 9 is installed between revolving body 1 and rotating shaft 2.
Preferably, the rotating seal ring 9 installed between revolving body 1 and rotating shaft 2 is multiple.
Multiple rotating seal rings 9 further improve the leakproofness between revolving body 1 and rotating shaft 2.
Specifically, it is equipped with to prevent the limit of 2 axial float of rotating shaft between 2 lower end of 1 lower end of revolving body and rotating shaft
Position plate 10.
Preferably, limiting plate 10 is stuck in 1 lower end of revolving body and is connected with 2 lower end of rotating shaft.
Specifically, O-ring 3 is installed between end cap 5 and revolving body 1.
By the O-ring 3 between end cap 5 and revolving body 1, the leakproofness between end cap 5 and revolving body 1 is improved.
O-ring has the following advantages that：
(1) it is suitble to a variety of seal forms：Static sealing, dynamic sealing.
(2) it is suitble to multi-motion mode：Rotary motion, axially reciprocating or aggregate motion.
(3) it is suitble to a variety of different sealing mediums：Oil, Water, Gas, chemical mediator or other blending agents.
By the way that suitable rubber material and appropriate formula is selected to design, realize to oil, water, air, coal gas and variousization
Learn the effective sealing function of medium
(4) design is simple, and compact structure is convenient to mount and dismount.
O-ring section structure is extremely simple, and has self sealing action, and sealing performance is reliable.
Due to O-ring in itself and installation position structure is all extremely simple, and formed standardization, thus install replace it is all non-
Chang Rongyi.
(5) it is of low cost.
Embodiment six：
Present invention also provides a kind of hydraulic crawler excavator, which includes above-mentioned center-rotary joint.
It is easy to use, reliability is high using the hydraulic crawler excavator of above-mentioned position adjustable steel pipe pipe clamp stent.
Finally it should be noted that：Various embodiments above is only to illustrate the technical solution of the utility model rather than it is limited
System；Although the utility model is described in detail with reference to foregoing embodiments, those of ordinary skill in the art should
Understand：It can still modify to the technical solution recorded in foregoing embodiments either to which part or whole
Technical characteristic carries out equivalent substitution；And these modifications or replacement, the essence of appropriate technical solution is not made to depart from this practicality newly
The scope of each embodiment technical solution of type.
Claims (10)
1. a kind of center-rotary joint, which is characterized in that revolving body (1) and rotating shaft (2) including coaxial arrangement, the revolution
O-ring (3) between body (1) and the rotating shaft (2) is installed, is also installed between the revolving body (1) and the rotating shaft (2)
It is useful for improving the supporting item (4) of the concentricity between the revolving body (1) and the rotating shaft (2), to prevent the O-ring
(3) eccentric wear.
2. center-rotary joint according to claim 1, which is characterized in that the supporting item (4) is mounted on described time
Turn two support rings between (1) and the rotating shaft (2).
3. center-rotary joint according to claim 1, which is characterized in that the revolving body (1) and the rotating shaft (2)
Between internal frame dustband (8) is installed.
4. center-rotary joint according to claim 1, which is characterized in that the revolving body (1) and the rotating shaft (2)
Between rotating seal ring (9) is installed.
5. center-rotary joint according to claim 4, which is characterized in that the revolving body (1) and the rotating shaft (2)
Between the rotating seal ring (9) installed be multiple.
6. center-rotary joint according to claim 1, which is characterized in that the revolving body (1) and the rotating shaft (2)
Between be equipped with to prevent the limiting plate (10) of the rotating shaft (2) axial float.
7. center-rotary joint according to claim 6, which is characterized in that the limiting plate (10) is stuck in the revolving body
(1) lower end and it is connected with the rotating shaft (2) lower end.
8. center-rotary joint according to claim 1, which is characterized in that revolving body (1) lower end is equipped with end cap
(5)。
9. center-rotary joint according to claim 8, which is characterized in that the end cap (5) and the revolving body (1) it
Between O-ring (3) is installed.
10. a kind of hydraulic crawler excavator, which is characterized in that including the center-rotary joint any one of claim 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721457421.2U CN207376687U (en) | 2017-11-03 | 2017-11-03 | Center-rotary joint and hydraulic crawler excavator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721457421.2U CN207376687U (en) | 2017-11-03 | 2017-11-03 | Center-rotary joint and hydraulic crawler excavator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207376687U true CN207376687U (en) | 2018-05-18 |
Family
ID=62334105
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721457421.2U Active CN207376687U (en) | 2017-11-03 | 2017-11-03 | Center-rotary joint and hydraulic crawler excavator |
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| Country | Link |
|---|---|
| CN (1) | CN207376687U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107604969A (en) * | 2017-11-03 | 2018-01-19 | 三重机有限公司 | Center-rotary joint and hydraulic crawler excavator |
-
2017
- 2017-11-03 CN CN201721457421.2U patent/CN207376687U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107604969A (en) * | 2017-11-03 | 2018-01-19 | 三重机有限公司 | Center-rotary joint and hydraulic crawler excavator |
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