CN102691838A - Hydraulic central swivel joint - Google Patents
Hydraulic central swivel joint Download PDFInfo
- Publication number
- CN102691838A CN102691838A CN2011100694273A CN201110069427A CN102691838A CN 102691838 A CN102691838 A CN 102691838A CN 2011100694273 A CN2011100694273 A CN 2011100694273A CN 201110069427 A CN201110069427 A CN 201110069427A CN 102691838 A CN102691838 A CN 102691838A
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- rotation
- solid
- turning axle
- swivel
- working connection
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Abstract
The invention relates to a hydraulic central swivel joint which is 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 swivel body (1) and a swivel shaft (2), and is characterized in that the lower end of the swivel shaft (2) is inserted into the swivel body (1) in an axial direction from an the upper end of the swivel body (1); seven main oil-way holes and one central oil drain hole are disposed on the swivel shaft (2) in an axial direction; and seven main oil ports are disposed on the swivel body (1) in a radial direction, so as to be communicated with the seven main oil-way holes on the swivel shaft (2) in a one-to-one correspondence manner. The multi-channel hydraulic swivel joint enables a fixed part and a rotating part which are in a hydraulic system and in a circuit to relatively rotate 360 degrees, unblocks oil ways up and down, and enables the oil-ways and the circuits not to act in series.
Description
Technical field
The present invention 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 let standing part and rotating part rotate 360 ° relatively; 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 objective of the invention is to overcome above-mentioned deficiency, provide in a kind of hydraulic system and the circuit and 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 objective of the invention is to realize like this:
The central swivel coupling of hydraulic pressure of the present invention; 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 said turning axle; And the upper end of turning axle is exposed to solid of rotation, and said turning axle axially offers seven working connection holes and draining hole, a center, and the center of turning axle is located in draining hole, said center; The periphery in said seven working connection pore size distribution draining holes in the center, radially have on the said 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 said seven working connection holes is blocked with plug, and it is stifled that the lower end in said seven working connection holes is provided with awl.
Be provided with back-up ring and circlip for shaft between the lower end of said 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 said solid of rotation and the turning axle.
The lower end of said solid of rotation is provided with end cap, and said end cap is fixed on the lower end of solid of rotation through bolt and plain washer, is provided with O type circle I between the lower end of said solid of rotation and the end cap.
Be provided with the water seal circle between said solid of rotation upper end and the turning axle.
Compared with prior art, the invention has the beneficial effects as follows:
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 and rotating part can rotate 360 ° relatively; 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 more complicated actions, has improved its applicability.
Description of drawings
Fig. 1 is the Facad structure schematic representation of the central swivel coupling of hydraulic pressure of the present invention.
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, awl are stifled 13, plug 14, O type circle III 15.
Embodiment
Referring to Fig. 1 to Fig. 4; The present invention 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 said 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 said solid of rotation 1 upper end and the turning axle 2; Said water seal circle 3 is used to prevent gas leak or entering, the lower end horizontal alignment of the lower end of said turning axle 2 and solid of rotation 1, and the lower end of said solid of rotation 1 is provided with end cap 4; Said end cap 4 is fixed on the lower end of solid of rotation 1 through bolt 5 and plain washer 6; Be provided with O type circle I 7 between the lower end of said 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 said 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 said solid of rotation 1 and the turning axle 2.
Like Fig. 2; Said turning axle 2 axially offers seven working connection holes and draining hole, a center; Said 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, and draining hole, said center is the H hole among Fig. 2 and Fig. 3, and said center draining hole H is located at the center of turning axle 2; The periphery of said seven working connection pore size distributions draining hole H in the center; The termination, upper end in said seven working connection holes is blocked with plug 14, and it is stifled 13 that the lower end in said seven working connection holes is provided with awl, and said awl stifled 13 is blocked the lower end in seven working connection holes.
Like 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 said 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, said 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 said turning axle (2); And the upper end of turning axle (2) is exposed to solid of rotation (1), and said turning axle (2) axially offers seven working connection holes and draining hole, a center, and the center of turning axle (2) is located in draining hole, said center; The periphery in said seven working connection pore size distribution draining holes in the center, radially have on the said 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 said seven working connection holes is blocked with plug (14), and the lower end in said seven working connection holes is provided with awl stifled (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 said 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 said 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 said solid of rotation (1) is provided with end cap (4); Said end cap (4) is fixed on the lower end of solid of rotation (1) through bolt (5) and plain washer (6), is provided with O type circle I (7) between the lower end of said 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 said solid of rotation (1) upper end and the turning axle (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100694273A CN102691838A (en) | 2011-03-23 | 2011-03-23 | Hydraulic central swivel joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100694273A CN102691838A (en) | 2011-03-23 | 2011-03-23 | Hydraulic central swivel joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102691838A true CN102691838A (en) | 2012-09-26 |
Family
ID=46857479
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011100694273A Pending CN102691838A (en) | 2011-03-23 | 2011-03-23 | Hydraulic central swivel joint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102691838A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103322354A (en) * | 2013-06-28 | 2013-09-25 | 长治清华机械厂 | Rotary joint |
| CN104652521A (en) * | 2015-01-27 | 2015-05-27 | 山东临工工程机械有限公司 | Rotary system of excavator |
| CN105299356A (en) * | 2015-12-09 | 2016-02-03 | 中冶陕压重工设备有限公司 | Seven-channel rotating joint device |
-
2011
- 2011-03-23 CN CN2011100694273A patent/CN102691838A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103322354A (en) * | 2013-06-28 | 2013-09-25 | 长治清华机械厂 | Rotary joint |
| CN104652521A (en) * | 2015-01-27 | 2015-05-27 | 山东临工工程机械有限公司 | Rotary system of excavator |
| CN105299356A (en) * | 2015-12-09 | 2016-02-03 | 中冶陕压重工设备有限公司 | Seven-channel rotating joint device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120926 |