CN202065573U - Hydraulic central swivel joint - Google Patents
Hydraulic central swivel joint Download PDFInfo
- Publication number
- CN202065573U CN202065573U CN2011200770130U CN201120077013U CN202065573U CN 202065573 U CN202065573 U CN 202065573U CN 2011200770130 U CN2011200770130 U CN 2011200770130U CN 201120077013 U CN201120077013 U CN 201120077013U CN 202065573 U CN202065573 U CN 202065573U
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- CN
- China
- Prior art keywords
- rotation
- solid
- turning axle
- working connection
- hydraulic pressure
- 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.)
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Abstract
The utility model relates to a hydraulic central swivel joint, mainly used in a hydraulic system of the machinery such as an excavator and a crane of large tonnage. The hydraulic central swivel joint comprises a revolving body (1) and a revolving shaft (2), and is characterized in that a lower end of the revolving shaft (2) is inserted into the revolving body (1) in an axial direction from an upper end of the revolving body (1); seven main oil-way apertures and one central oil draining aperture are opened on the revolving shaft (2) in an axial direction; and seven main oil openings are opened on the revolving body (1) in a radial direction, so as to be communicated with the seven main oil-way apertures on the revolving shaft (2) in a one-to-one correspondence manner. The hydraulic central swivel joint can make a fixed part and a rotation part in a hydraulic system and in a circuit correspondingly rotate 360 degrees; oil-way is unblocked up to down; and motions of the oil-ways and the circuits are not in series connection.
Description
Technical field
The utility model relates to the central swivel coupling of a kind of hydraulic pressure, being mainly used in the hydraulic system of machineries such as large-tonnage excavator, hoist, grader, tower crane, is to connect standing part and the hydraulic pipe line of rotating part and the link of circuit in whole hydraulic system and the circuit.
Background technique
Hydraulic shovel, loop wheel machine, loader etc., two-part are need be rotating about it, this just exists the oil circuit of rotating part and standing part and the connectivity problem of circuit.Hydraulic pressure central authorities swivel coupling is made up of solid of rotation, turning axle and lid etc.During use, the revolution lower bolster of solid of rotation and hydraulic shovel, hoist machinery is fixed, and the mounting plate on the turning axle supports with the revolution on the revolution upper mounting plate and is connected.Hydralic hose and electric wire are installed on respectively on each hydraulic fluid port and circuit of solid of rotation and turning axle, and the upper mounting plate of hydraulic machinery then drives the turning axle rotation.
After yet hydraulic pressure in the past central authorities swivel coupling connects the hydraulic pipe line and circuit of standing part and rotating part in hydraulic system and the circuit, can not allow 360 ° of the relative rotations of standing part with rotating part, cause pipeline and circuit to interfere, and oil circuit is upper and lower not smooth, each oil circuit and circuit operation series connection.
Summary of the invention
The purpose of this utility model is to overcome above-mentioned deficiency, provide in a kind of hydraulic system and the circuit can rotate 360 ° relatively between the standing part and rotating part, and oil circuit is upper and lower unimpeded, the hydraulic pressure central authorities swivel coupling that each oil circuit and circuit operation are not connected.
The purpose of this utility model is achieved in that
The utility model hydraulic pressure central authorities swivel coupling, comprise solid of rotation and turning axle, insert in the solid of rotation from the top axial of solid of rotation the lower end of described turning axle, and the upper end of turning axle is exposed to solid of rotation, described turning axle axially offers seven working connection holes and draining hole, a center, the center of turning axle is located in draining hole, described center, described seven working connection pore size distributions are in the periphery in draining hole, center, radially have on the described solid of rotation seven main hydraulic fluid ports with turning axle on corresponding one by one being connected of seven working connection holes.
The termination, upper end in described seven working connection holes is blocked with plug, and the lower end in described seven working connection holes is provided with cone blocking.
Be provided with back-up ring and circlip for shaft between the lower end of described solid of rotation and the lower end of turning axle, rotating seal ring, O type circle II, dust ring and O type circle III are housed in the annular groove between described solid of rotation and the turning axle.
The lower end of described solid of rotation is provided with end cap, and described end cap is fixed on the lower end of solid of rotation by bolt and plain washer, is provided with O type circle I between the lower end of described solid of rotation and the end cap.
Be provided with the water seal circle between described solid of rotation upper end and the turning axle.
Compared with prior art, the beneficial effects of the utility model are:
This hydraulic pressure central authorities swivel coupling can connect the hydraulic pipe line and the circuit of standing part and rotating part in whole hydraulic system and the circuit, and make standing part can rotate 360 ° relatively with rotating part, pipeline and circuit just can not interfere, it is unimpeded that upper and lower oil circuit and circuit can keep, and each oil circuit and circuit operation are not connected.And this hydraulic pressure central authorities swivel coupling provides multichannel oil circuit and multiplex circuit, makes excavator, loader can carry out the action of more complexity, has improved its applicability.
Description of drawings
Fig. 1 is the Facad structure schematic representation of the utility model hydraulic pressure central authorities swivel coupling.
Fig. 2 is the I-I sectional view of Fig. 1.
Fig. 3 is the plan view of Fig. 1.
Fig. 4 is the worm's eye view of Fig. 1.
Wherein: solid of rotation 1, turning axle 2, water seal circle 3, end cap 4, bolt 5, plain washer 6, O type circle I 7, back-up ring 8, circlip for shaft 9, rotating seal ring 10, O type circle II 11, dust ring 12, cone blocking 13, plug 14, O type circle III 15.
Embodiment
Referring to Fig. 1 to Fig. 4, the utility model relates to the central swivel coupling of a kind of hydraulic pressure, comprise solid of rotation 1 and turning axle 2, insert in the solid of rotation 1 from the top axial of solid of rotation 1 lower end of described turning axle 2, and the upper end of turning axle 2 is exposed to solid of rotation 1, be provided with water seal circle 3 between described solid of rotation 1 upper end and the turning axle 2, described water seal circle 3 is used to prevent gas leak or enters, the lower end horizontal alignment of the lower end of described turning axle 2 and solid of rotation 1, the lower end of described solid of rotation 1 is provided with end cap 4, described end cap 4 is fixed on the lower end of solid of rotation 1 by bolt 5 and plain washer 6, be provided with O type circle I 7 between the lower end of described solid of rotation 1 and the end cap 4, be provided with back-up ring 8 and circlip for shaft 9 between the lower end of the lower end of described solid of rotation 1 and turning axle 2, in the annular groove between described solid of rotation 1 and the turning axle 2 rotating seal ring 10 be housed, O type circle II 11, dust ring 12 and O type circle III 15.
As Fig. 2, described turning axle 2 axially offers seven working connection holes and draining hole, a center, described seven working connection holes are A hole, B hole, C hole, D hole, E hole, F hole and the G hole among Fig. 1, Fig. 2 and Fig. 3, draining hole, described center is the H hole among Fig. 2 and Fig. 3, described center draining hole H is located at the center of turning axle 2, described seven working connection pore size distributions are in the periphery of draining hole, center H, the termination, upper end in described seven working connection holes is blocked with plug 14, the lower end in described seven working connection holes is provided with cone blocking 13, and described cone blocking 13 is blocked the lower end in seven working connection holes.
As Fig. 1 and Fig. 2, corresponding to seven working connection holes on the turning axle 2 and draining hole, a center, radially have on the described solid of rotation 1 seven main hydraulic fluid ports with turning axle 2 on corresponding one by one being connected of seven working connection holes, described seven main hydraulic fluid ports are A mouth, B mouth, C mouth, D mouth, E mouth, F mouth and G mouth.
Claims (5)
1. hydraulic pressure central authorities swivel coupling, comprise solid of rotation (1) and turning axle (2), it is characterized in that: insert in the solid of rotation (1) from the top axial of solid of rotation (1) lower end of described turning axle (2), and the upper end of turning axle (2) is exposed to solid of rotation (1), described turning axle (2) axially offers seven working connection holes and draining hole, a center, the center of turning axle (2) is located in draining hole, described center, described seven working connection pore size distributions are in the periphery in draining hole, center, radially have on the described solid of rotation (1) seven main hydraulic fluid ports with turning axle (2) on corresponding one by one being connected of seven working connection holes.
2. the central swivel coupling of a kind of hydraulic pressure according to claim 1, it is characterized in that: the termination, upper end in described seven working connection holes is blocked with plug (14), and the lower end in described seven working connection holes is provided with cone blocking (13).
3. the central swivel coupling of a kind of hydraulic pressure according to claim 1 and 2, it is characterized in that: be provided with back-up ring (8) and circlip for shaft (9) between the lower end of the lower end of described solid of rotation (1) and turning axle (2), rotating seal ring (10), O type circle II (11), dust ring (12) and O type circle III (15) are housed in the annular groove between described solid of rotation (1) and the turning axle (2).
4. the central swivel coupling of a kind of hydraulic pressure according to claim 1 and 2, it is characterized in that: the lower end of described solid of rotation (1) is provided with end cap (4), described end cap (4) is fixed on the lower end of solid of rotation (1) by bolt (5) and plain washer (6), is provided with O type circle I (7) between the lower end of described solid of rotation (1) and the end cap (4).
5. the central swivel coupling of a kind of hydraulic pressure according to claim 1 and 2 is characterized in that: be provided with water seal circle (3) between described solid of rotation (1) upper end and the turning axle (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200770130U CN202065573U (en) | 2011-03-23 | 2011-03-23 | Hydraulic central swivel joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200770130U CN202065573U (en) | 2011-03-23 | 2011-03-23 | Hydraulic central swivel joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202065573U true CN202065573U (en) | 2011-12-07 |
Family
ID=45059435
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200770130U Ceased CN202065573U (en) | 2011-03-23 | 2011-03-23 | Hydraulic central swivel joint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202065573U (en) |
-
2011
- 2011-03-23 CN CN2011200770130U patent/CN202065573U/en not_active Ceased
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C35 | Partial or whole invalidation of patent or utility model | ||
| IW01 | Full invalidation of patent right |
Decision date of declaring invalidation: 20140311 Decision number of declaring invalidation: 22219 Granted publication date: 20111207 |