CN203375043U - Center swivel joint for 6t-8t-level crawler excavator - Google Patents
Center swivel joint for 6t-8t-level crawler excavator Download PDFInfo
- Publication number
- CN203375043U CN203375043U CN201320439292.XU CN201320439292U CN203375043U CN 203375043 U CN203375043 U CN 203375043U CN 201320439292 U CN201320439292 U CN 201320439292U CN 203375043 U CN203375043 U CN 203375043U
- Authority
- CN
- China
- Prior art keywords
- swivel
- turning axle
- revolving shell
- center
- crawler excavator
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Abstract
The utility model discloses a center swivel joint for a 6t-8t-level crawler excavator. The center swivel joint comprises a swivel shaft and a swivel shell arranged on the swivel shaft in a sleeved mode. A plurality of axial oil grooves are formed inside the swivel shaft, a plurality of annular oil grooves communicated with the axial oil grooves are formed in the inner wall of the swivel shell, the two sides of each annular oil groove are respectively provided with a high pressure swivel combination sealing ring, and two low pressure O-type sealing rings are arranged between the upper portion of the swivel shaft and the upper portion of the swivel shell. The center swivel joint has the advantages that the low pressure O-type sealing rings are additionally arranged so that oil leakage can be effectively prevented; the dustproof design is additionally arranged, therefore, dust can be effectively prevented from entering the interior of the center swivel joint, and oil pollution is avoided.
Description
Technical field
The utility model relates to a kind of 6 ~ 8 tonnes of crawler excavator center-rotary joints.
Background technique
Relative rotation motion is done with the top body in the crawler excavator chassis, and center-rotary joint is the supply of hydraulic circuit when guaranteeing to do rotation motion.In the time of the digger revolving action, by central joint, hydraulic oil is flowed to running motor.Plain tubing is difficult to accomplish the effect as central joint.If but the situation of fluid seepage can not occur in the center-rotary joint sealing.And the work under bad environment of excavator, dust easily enters interiors of products, causes oil contamination, even causes the wearing and tearing of seal ring, affects the working life of center-rotary joint.
Summary of the invention
For solving above technical deficiency, the utility model provides a kind of good seal, can effectively prevent 6 ~ 8 tonnes of crawler excavator center-rotary joints that dust enters.
The utility model is realized by following measures:
A kind of 6 ~ 8 tonnes of crawler excavator center-rotary joints of the present utility model, comprise turning axle
With the revolving shell be enclosed within on turning axle, be provided with some axial oil grooves in turning axle, be provided with some annular oil grooves that are communicated with axial oil groove on described revolving shell inwall, each annular oil groove both sides is provided with high-pressure rotational combined seal ring, is provided with twice low pressure O RunddichtringO between described turning axle top and revolving shell top.
Above-mentioned turning axle upper end is provided with the shaft shoulder, and the shaft shoulder docks with the upper-end surface of revolving shell, be provided with dustproof framework ring on the turning axle at interface place, described dustproof framework ring top is inclined-plane, bottom is bent to downwards between the outside, revolving shell upper end and inwall and revolving shell outer surface and leaves cavity, in described cavity, is plugged with dust ring.
The compressibility of above-mentioned low pressure O RunddichtringO is 8% ~ 10%.
The beneficial effects of the utility model are: 1. increased low pressure O RunddichtringO, can effectively avoid the fluid seepage.2. increased dustproof design, can effectively prevent that dust from entering interiors of products, avoids causing oil contamination.
The accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Wherein: 1 turning axle, 2 revolving shells, 3 axial oil grooves, 4 annular oil grooves, 5 dustproof framework rings, 6 dust rings, 7 low pressure O RunddichtringOs.
Embodiment
A kind of 6 ~ 8 tonnes of crawler excavator center-rotary joints of the present utility model, comprise turning axle
1 and be enclosed within the revolving shell 2 on turning axle 1, be provided with some axial oil grooves 3 in turning axle 1, be provided with some annular oil grooves 4 that are communicated with axial oil groove 3 on revolving shell 2 inwalls, each annular oil groove 4 both sides is provided with high-pressure rotational combined seal ring, and high-pressure rotational combined seal ring can play and prevent that fluid from altering logical effect.Turning axle 1 upper end is provided with the shaft shoulder, and the shaft shoulder docks with the upper-end surface of revolving shell 2.
In actual use, the situation that inner fluid oozes out often appears in the interface of the shaft shoulder and revolving shell 2.The utility model just increases and is provided with twice low pressure O RunddichtringO 7 between turning axle 1 top and revolving shell 2 tops.Can effectively avoid the fluid seepage.The low pressure O RunddichtringO 7 that the compressibility that low pressure O RunddichtringO 7 adopts is 8% ~ 10%, can effectively prevent the fluid seepage and extend O type circle working life through checking.
Increase on the turning axle 1 at interface place and be provided with dustproof framework ring 5, dustproof framework ring 5 tops are inclined-plane, and bottom is bent to downwards between revolving shell 2 outsides, upper end and inwall and revolving shell 2 outer surfaces and leaves cavity, is plugged with dust ring 6 in cavity.Dustproof framework ring 5 provides support for dust ring 6.Can effectively prevent that dust from entering interiors of products, avoids the wearing and tearing that cause oil contamination and avoid seal ring.
The above is only the preferred implementation of this patent; it should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the art of this patent principle; can also make some improvement and replacement, these improvement and replacement also should be considered as the protection domain of this patent.
Claims (3)
1. 6 ~ 8 tonnes of crawler excavator center-rotary joints, comprise turning axle and the revolving shell that is enclosed within turning axle, be provided with some axial oil grooves in turning axle, be provided with some annular oil grooves that are communicated with axial oil groove on described revolving shell inwall, each annular oil groove both sides is provided with high-pressure rotational combined seal ring, it is characterized in that: be provided with twice low pressure O RunddichtringO between described turning axle top and revolving shell top.
2. 6 ~ 8 tonnes of crawler excavator center-rotary joints according to claim 1, it is characterized in that: described turning axle upper end is provided with the shaft shoulder, and the shaft shoulder docks with the upper-end surface of revolving shell, be provided with dustproof framework ring on the turning axle at interface place, described dustproof framework ring top is inclined-plane, bottom is bent to downwards between the outside, revolving shell upper end and inwall and revolving shell outer surface and leaves cavity, in described cavity, is plugged with dust ring.
3. 6 ~ 8 tonnes of crawler excavator center-rotary joints according to claim 1, it is characterized in that: the compressibility of described low pressure O RunddichtringO is 8% ~ 10%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320439292.XU CN203375043U (en) | 2013-07-23 | 2013-07-23 | Center swivel joint for 6t-8t-level crawler excavator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320439292.XU CN203375043U (en) | 2013-07-23 | 2013-07-23 | Center swivel joint for 6t-8t-level crawler excavator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203375043U true CN203375043U (en) | 2014-01-01 |
Family
ID=49837572
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320439292.XU Expired - Fee Related CN203375043U (en) | 2013-07-23 | 2013-07-23 | Center swivel joint for 6t-8t-level crawler excavator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203375043U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104948862A (en) * | 2015-06-19 | 2015-09-30 | 泸州邦立液压有限责任公司 | Electric swivel joint |
-
2013
- 2013-07-23 CN CN201320439292.XU patent/CN203375043U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104948862A (en) * | 2015-06-19 | 2015-09-30 | 泸州邦立液压有限责任公司 | Electric swivel joint |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203375043U (en) | Center swivel joint for 6t-8t-level crawler excavator | |
| CN205001708U (en) | 6 tonne pneumatic tyred excavator uses central swivel joint | |
| CN205013919U (en) | 20 central swivel joint is used to tonne crawler -mounted excavator | |
| CN202883719U (en) | Plain radial bearing | |
| CN204976188U (en) | Rotatory oil circuit distributor of four -axis | |
| CN203453676U (en) | Central swivel joint for 22-tonner crawler excavator | |
| CN203375053U (en) | Center swivel joint for 13t-level crawler excavator | |
| CN103423538A (en) | Hydraulic swivel joint with high leak tightness | |
| CN203463662U (en) | Drive axle wheel side dustproof structure | |
| CN203453471U (en) | Central swivel joint for 30-50-tonner crawler excavator | |
| CN203395444U (en) | High-speed 360-degree rotary connector | |
| CN202125615U (en) | Reed-free framework type oil seal | |
| CN204533913U (en) | Zero leakage swivel joint | |
| CN204164199U (en) | Universal coupling with spider improved flange jaw | |
| CN202302473U (en) | Single side high-pressure sealed hydraulic revolving joint | |
| CN202280978U (en) | Rotary joint capable of effectively maintaining pressure | |
| CN202302476U (en) | Hydraulic revolving joint with electric brush | |
| CN205207881U (en) | Squirt valve rod double -layer seal ring | |
| CN203973810U (en) | Convertible hydraulic system of internal mixer | |
| CN203892298U (en) | Multi-seal oil cylinder | |
| CN203835716U (en) | Single screw pump rotor | |
| CN204253430U (en) | A kind of mechanical seal structure | |
| CN202431952U (en) | Piston seal wheel with magnetic seal ring | |
| CN203411776U (en) | Sealing structure of swinging shaft of sewing machine | |
| CN202302493U (en) | Hydraulic rotary joint with good sealing effect |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140101 Termination date: 20190723 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |