CN1029422C - Revolving joint for high speed and high pressure hydraulic means - Google Patents
Revolving joint for high speed and high pressure hydraulic means Download PDFInfo
- Publication number
- CN1029422C CN1029422C CN 93120024 CN93120024A CN1029422C CN 1029422 C CN1029422 C CN 1029422C CN 93120024 CN93120024 CN 93120024 CN 93120024 A CN93120024 A CN 93120024A CN 1029422 C CN1029422 C CN 1029422C
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- oil
- running shaft
- high pressure
- speed
- ring
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Abstract
The present invention relates to a multichannel high-pressure hydraulic-pressure rotary coupling device used for a high-speed rotary shaft, which comprises a rotary shaft, a casing, an end cover, a bearing, a seal, at least one oil supply port, an oil input port and an oil output port and an oil through hole, wherein the oil input port and the oil output port are connected by the oil through; the oil supply port is arranged in the static casing, and the oil input port is arranged in the rotary shaft and is arranged to be opposite to the oil supply port on the casing; high-pressure rotary sealing rings are respectively arranged between the inner surface of the casing and the outer surface of the rotary shaft and at the left side and the right side of the oil supply port. Compared with the prior art, the present invention has the advantages of wide application range, large application through diameter, no leakage, etc.; when pressure is 2.5*10<7> Pa, the linear velocity of the rotary shaft is more than 3 m/s.
Description
The present invention relates to a kind of high-speed hydraulic rotating joint, particularly a kind of multichannel high-pressure rotary joiner that is applicable to high-speed rotating shaft.
In many occasions in modern industry, need carry the fluid that certain pressure is arranged to a solid of rotation from actionless parts, the pressure that is used for the rotary driving body is carried out no part (oil hydraulic cylinder or motor etc.).As being used to batch the hydraulic pressure coiling machine of steel band in the continuous mill production line,, make that the hydraulic rotating joiner on the coiling machine must be worked under high-voltage high-speed because the weight of the steel coil strip of batching is big and the rotating speed height that batches.And rotating joint of the prior art can not satisfy the service condition as hydraulic rotating joiner on the coiling machine because himself structure and factors such as sealing configuration and material generally can only be worked under high pressure low speed or high velocity, low pressure.The sealing that is used for rotating joint in the prior art mainly contains following several:
(1) filling type sealing.As domain packing seal and packing filling sealing.Pressure Applicable scope: 1.3 * 10
3Pa-3.5 * 10
7The Pa linear velocity is less than 20m/s, and shortcoming is: when pressure was high, linear velocity was low; Frictional force is big; Leakage is arranged during parking; And only be suitable for single channel and connect.
(2) extrusion pressing type sealing.As O type, D, X, the sealing of △ type etc., it is 3.5 * 10
7Under the Pa pressure, roulette speed is less than 0.05m/s; 0.7 * 10
6Under the Pa pressure, roulette speed can reach 3m/s.
(3) flexural mode sealing.As: oil sealings such as V-type, U type, Y type in the lip seal.This class rotary seal is widely used in industrial every field, becomes the main force of rotary seal with mechanical seal.Its sealing load can reach 10 * 10
7Pa; But maximum shortcoming is that roulette speed is low, and as the linear velocity of 30-35mm/s is arranged in the sealing of U type, when oil sealing was worked in roulette speed 4-15m/s scope, withstand voltage had only 0.3-0.7 * 10
6Pa.
(4) divide the type that cuts open to seal, as trip ring and distinguish ring.It is withstand voltage and roulette speed can very high (1.5 * 10
7Pa-2.2 * 10
8Pa; 3m/s-100m/s), but it belongs to leakage type sealing.Just it all has leakage at rotation status and vehicle stop state.Promptly pollute environment, also reduced efficient.
(5) face type sealing.Claim mechanical seal again.No matter this sealing still on roulette speed all has very high superiority at voltage endurance capability.Working pressure can reach 10 * 10
7Pa, linear velocity can reach 185m/s; Working diameter can reach 1500mm.But its outstanding shortcoming is the manufacturing difficulty, technology and complex structure; The cost height, strict to Environmental Conditions, convertibility is poor, and can only connect by single channel.
When above-mentioned rotary seal was used on the hydraulic rotating joiner (claiming swivel joint again), the shortcoming that high speed and this two indexes of high pressure can not satisfy simultaneously became more obvious.According to the test of certain import being revolved Coupling Shaft, it is withstand voltage to be 2.3 * 10
7During Pa, linear velocity is 0.3m/s; Withstand voltage is 1.6 * 10
7During Pa, linear velocity is 0.8m/s; Withstand voltage is 2.5 * 10
6During Pa, linear velocity is 16m/s.When employing had the seal form of leakage, above-mentioned situation took a favorable turn slightly, but energy loss is big, and both befouling environment had also reduced the efficient of hydraulic system.
One object of the present invention is to overcome defective of the prior art, and a kind of high-pressure and hydraulic rotating joint that is applicable to high-speed rotating shaft is provided.
Another object of the present invention provides a kind of high speed and high pressure hydraulic rotation coupling with a plurality of connecting passages.
Another purpose of the present invention provides a kind of revolving joint for high speed and high pressure hydraulic means that does not have external leakage.Its high pressure sealing is for adopting a kind of self balance combined seal ring of pressure balance principle, and its friction factor is little and wear resistance good.
Technical solution of the present invention is as follows: a kind of high-speed hydraulic rotation coupling, it comprises a running shaft, one housing, bearing, end cap, sealing, has an oil-feed port at least, oil outlet and being connected on oil-feed door and, oil through between the oil outlet, it is characterized in that: described bearing is at static housing and be loaded between the running shaft in the housing, so that running shaft rotates in housing, described oil-feed port is opened on static housing, filler opening open on the running shaft and with housing on the oil-feed port positioned opposite, described oil outlet is opened at running shaft near the other end of solid of rotation and by being communicated with filler opening along the axially extended oil through of running shaft, between the internal surface and running shaft outer surface of described housing, the left side of oil-feed port, right both sides, a high pressure rotary sealing ring respectively is set, a described left side, right two spaces that high pressure rotary sealing ring surrounded form an annular pressure chamber around the running shaft filler opening.Described high pressure rotary sealing ring is a self balance combined high pressure rotary sealing ring, it comprises that one has the seal bowl of lip opening and interference and is installed in O shape circle in the seal bowl, is formed with a bevel edge on the limit that the lip opening extends to running shaft contacts on the described seal bowl.Described seal bowl is made by filling polytetrafluoroethylene material, and described O shape circle is made by rubber.The lip opening edge of seal bowl is facing to described annular pressure chamber in the described self balance combined high pressure rotary sealing ring, pressured fluid acts on the chamfer surface of upper and lower of superincumbent lip opening internal surface simultaneously, formed radial effect power is on the contrary, and the active force of pressing to running shaft is slightly larger than the active force that oil pressure produces on bevel edge.Adjacently on the described housing be provided with two oil-feed ports, described running shaft is provided with two filler openings, oil outlet and axial oil through, between the internal surface and running shaft outer surface of stationary housings, the left and right sides of oil-feed port is provided with two pairs of self balance combined high pressure rotary sealing rings, each lip opening to seal ring is oppositely arranged and forms two independently annular pressure chambeies around running shaft, two filler openings are also arranged vertically from a distance in the radially opposite direction (becoming 180 °) of running shaft, two oil outlets are arranged on the other end of running shaft, and two oil throughs are provided with along the running shaft parallel to an axis.Described oil-feed port, it can be three into and out of hydraulic fluid port and oil through, described self balance combined high pressure rotary sealing ring is six, every pair of seal ring of being oppositely arranged forms separately independently annular pressure chamber, and filler opening becomes hexagonal angle in a circumferential direction and axially that are arranged apart.Be provided with grommet between the outside of described self balance combined high pressure rotary sealing ring and the internal surface of housing, between two pairs of grommets, be provided with logical oil ring near the oil-feed port place.Described grommet and logical oil ring are made by the 40Cr material.Described bearing is arranged on the axial outside of self balance combined high pressure rotary sealing ring and grommet, and the low pressure rotating seal ring is arranged on the axial outside of described bearing and between the outer surface of static shell inner surface and running shaft.The center of described running shaft is shaped on a circular liquid-through hole, its liquid outlet is opened on the end face of the running shaft of close solid of rotation, liquid entering hole is opened on the end face of the other end of running shaft, the end cap center that is connected with stationary housings has supply opening, a low pressure rotating seal ring is set between the internal surface of near outer surface the other end of running shaft and stationary housings at least, and the end face of sealing ring and described end cap internal surface and running shaft surrounds a feed flow chamber.But described low-pressure fluid cooling water or the lubricant oil that is arranged in the liquid-through hole of rotating shaft center.Described running shaft radially extends to form the disc flange between another end cap near the oil outlet of solid of rotation and stationary housings, be evenly equipped with attachment hole on it, by connecting bolt running shaft and solid of rotation is coupled together.Described filler opening and oil outlet are circular hole and intersect vertically along extending radially inwardly with separately oil through of running shaft that described filler opening is arranged in the annular pressure chamber all the time.A described tool oil outlet radially intersects vertically with oil through, and another oil outlet is located on the end face of running shaft.Described two oil outlets all radially intersect vertically with separately oil through.
The present invention compares with hydraulic rotating joiner of the prior art, and is applied widely, can satisfy high pressure, high-revolving usage requirement simultaneously, for example, is 2.5 * 10 at oil pressure pressure
7During Pa, the linear velocity of running shaft is greater than 3m/s, and not leakage.The Applicable temperature scope is big simultaneously, can both proper functioning in-40 ℃-+90 ℃ scope, the diameter of running shaft is big, diameter of oil through can be selected in φ 6-φ 25mm in it, oil through can have multiple medium participation work (as oil and water) simultaneously for (as long as spatial position and compressive strength are enough) more than two.In order to improve applicability, also can on rotating joint, design standby leakage hole, high pressure rotary sealing was lost efficacy, still can continue to use up to shutting down maintenance.
The present invention will be described in more detail below in conjunction with most preferred embodiment.
Fig. 1 is that the integral body of revolving joint for high speed and high pressure hydraulic means of the present invention is partly cutd open schematic representation;
Fig. 2 is the partial cutaway diagrammatic sketch of self balance combined high pressure rotary sealing ring among Fig. 1;
Fig. 3 is the plan view of Fig. 1;
Fig. 4 is the left view of Fig. 1;
Fig. 5 is the right elevation of Fig. 1;
Among the figure: plug stifled 1; Flange 2; Dust sealing 3; Low pressure rotating seal ring 4,28; Bearing 5,21; Seal ring 6,10,17,23,33,42; Front cover 7; Be equipped with jack panel 8; Grommet 9; Logical oil ring 11; Steel Cable Baffle Ring 12,26,38; Baffle ring 13,27,39; Two-way grommet 14; Housing 15; Outer end grommet 16; End cap grommet 18; Screw 19,24; Bullet pad 20,25; Rear end cover 22; Gland 29; Pressure ring 30; Packing ring 31; Self balance combined high pressure rotary sealing ring 34; Elasticity O type circle 35; Running shaft 36; Bolt 40; Seal ring 41; O type sealing 42; Back pressure cavity 44; Seal bowl 45; The waist 51 of seal bowl; The center of circle 52 of elastic O-ring; Bevel edge 53; Sealing surface 54; Oil-feed port A, B; Pressure chamber F, G; Oil through C, D; Oil outlet E, N; Filler opening M, Q; Supply opening J; Feed flow chamber I; Liquid outlet K; Leak chamber H.
Referring to accompanying drawing, particularly Fig. 1 shows most preferred embodiment of the present invention, and it has two pressure channels by P
1And P
2Expression.Plug stifled 1 is used for blocking P
2The auxiliary hole of passage, flange 2 is used for being connected with solid of rotation, flange plate on the axle is provided with 8 uniform bolts hole, straight-through water port is arranged on the central axis, can to a rotating body water flowing cooling (noting it not being that cooling is used to this rotating joint), the seal ring 41,42 that also is provided with simultaneously between the profit is used for preventing that profit from mixing.With parallel axes two or more high pressure oil through C and D are arranged, flange 2 is fixedly connected with solid of rotation and 36 rotations of driven rotary axle.Dust sealing 3 and low pressure rotating seal ring 4 constitute leakage chamber H with the part of front cover 7 and housing 15 internal surfaces.Bearing 5 and 21 is fixed on the cylinder of running shaft 36.Have water-supplying mouth J on the rear end cover 22, low pressure rotating seal ring 28 and Steel Cable Baffle Ring 26, baffle ring 27 constitute water supply chamber I with the internal surface of rear end cover 22.The termination on running shaft 36 the right is fixed with gland 29, and by the fixing water-stop of gland, water-stop is made up of pressure ring 30, packing ring 31, seal ring 32, seal ring 33.At the middle part of running shaft 36 radially relatively, axially-spaced one segment distance has filler opening M and Q and intersects vertically with oil through C and D respectively and be communicated with.Have oil supply hole A and B on the housing 15, be respectively arranged with self balance combined high pressure rotary sealing ring 34 in the both sides of oil-feed port A and B, the axial outside of seal ring is respectively arranged with grommet 9, middle grommet 14 and external bushing ring 16, logical oil ring 11 is fixed and be attached on the internal surface of housing by grommet, above-mentioned each part forms separately independently annular pressure chamber F and G respectively, when rotated, filler opening M and Q on the running shaft 36 place annular pressure chamber G and F all the time, to guarantee the requirement of successive fuel feeding.
Referring to Fig. 2, cut-away view is amplified in the part that there is shown the self balance combined high pressure rotary sealing ring 34 in a left side.Sealing ring 34 comprises a seal bowl 45 and an elastic O-ring 35, seal bowl 45 gathers back fluorine ethylene by filling and makes, have higher hardness and also wear-resisting, friction factor is little, elastic O-ring 35 is made by rubber, and interference is assemblied in the lip opening of seal ring 34, and seal bowl 45 also be interference be assemblied on the outer surface of running shaft 36.Seal bowl 45 has a bevel edge 53 that tilts facing to a side of pressure chamber from lip opening selfsealings face 51, and the part of seal bowl 45 close back pressure cavity 44 has a sealing waist 51.When pressure chamber leads to high pressure oil, pressure P acts on the lip opening internal surface and O shape is enclosed on 35, also act on the bevel edge 53 simultaneously, control force direction that running shaft radially produces and press to the active force of running shaft mutually on the contrary be slightly larger than the active force that oil pressure produces on bevel edge.Therefore the axial pressing force that seal ring is under high pressure produced is in a basic balance, can not produce excessive radial power and causes seal ring 34 wearing and tearing or tear.Because sealing force is adjusted when assembling, and along with the increase of pressure, the sealing force (radial force) of 34 pairs of running shafts of seal ring slightly increases, and the hardness of seal bowl 45 is enough to resist the deformation force that oil pressure increases generation simultaneously, so guaranteed the sealing to running shaft.
The working procedure of hydraulic rotating joiner of the present invention is: high pressure oil P
1And P
2Enter annular pressure chamber F, G, then pass through high pressure oil through C and D by logical oil ring 11 from oil-feed port A and B, at last from oil outlet E and K enter pressure actuator the solid of rotation.
Claims (15)
1, a kind of revolving joint for high speed and high pressure hydraulic means, comprise a running shaft, one housing, bearing, end cap, sealing, has an oil-feed port at least, oil outlet on oil-feed door and, and connect to advance, oil through between the oil outlet, described bearing is at static housing and be loaded between the running shaft in the housing, so that running shaft rotates in housing, described oil-feed port is opened on static housing, it is characterized in that: filler opening open on the running shaft and with housing on the oil-feed port positioned opposite, described oil outlet is opened at running shaft near the other end of solid of rotation and by being communicated with filler opening along the axially extended oil through of running shaft, between the internal surface and running shaft outer surface of described housing, the left side of oil-feed port, right both sides, a high pressure rotary sealing ring respectively is set, a described left side, right two spaces that high pressure rotary sealing ring surrounded form an annular pressure chamber around the running shaft filler opening.
2, a kind of revolving joint for high speed and high pressure hydraulic means as claimed in claim 1, it is characterized in that: described high pressure rotary sealing ring is a self balance combined high pressure rotary sealing ring, it comprises that one has the seal bowl of lip opening and interference and is installed in O shape circle in the seal bowl, is formed with a bevel edge on the limit that the lip opening extends to running shaft contacts on the described seal bowl.
3, a kind of revolving joint for high speed and high pressure hydraulic means as claimed in claim 2 is characterized in that: described seal bowl is made by filling polytetrafluoroethylene material, and described O shape circle is made by rubber.
4, a kind of high-speed hydraulic rotating joint as claimed in claim 2, it is characterized in that: the lip opening edge of seal bowl is facing to described annular pressure chamber in the described self balance combined high pressure rotary sealing ring, pressured fluid acts on the chamfer surface of upper and lower of superincumbent lip opening internal surface simultaneously, formed radial effect power is opposite, and the active force of pressing to running shaft is slightly larger than the active force that oil pressure produces on bevel edge.
5, a kind of revolving joint for high speed and high pressure hydraulic means as claimed in claim 1, it is characterized in that: adjacently on the described housing be provided with two oil-feed ports, described running shaft is provided with two filler openings, oil outlet and axial oil through, between the internal surface and running shaft outer surface of stationary housings, the left and right sides of oil-feed port is provided with two pairs of self balance combined high pressure rotary sealing rings, each lip opening to seal ring is oppositely arranged and forms two independently annular pressure chambeies around running shaft, two filler openings are also arranged vertically from a distance in the radially opposite direction (becoming 180 °) of running shaft, two oil outlets are arranged on the other end of running shaft, and two oil throughs are provided with along the running shaft parallel to an axis.
6, a kind of revolving joint for high speed and high pressure hydraulic means as claimed in claim 1, it is characterized in that: described oil-feed port, can be three into and out of hydraulic fluid port and oil through, described self balance combined high pressure rotary sealing ring is six, every pair of seal ring that is oppositely arranged forms separately independently annular pressure chamber, and filler opening becomes hexagonal angle and axially-spaced to arrange in a circumferential direction.
7, as the described a kind of high-speed hydraulic rotating joint in one of claim 1 or 5 or 6, it is characterized in that: be provided with grommet between the outside of described self balance combined high pressure rotary sealing ring and the internal surface of housing, between two pairs of grommets, be provided with logical oil ring near the oil-feed port place.
8, a kind of revolving joint for high speed and high pressure hydraulic means as claimed in claim 7 is characterized in that: described grommet and logical oil ring are made by the 40Cr material.
9, as the described a kind of revolving joint for high speed and high pressure hydraulic means in one of claim 1 or 5 or 6, it is characterized in that: described bearing is arranged on the axial outside of self balance combined high pressure rotary sealing ring and grommet, and the low pressure rotating seal ring is arranged on the axial outside of described bearing and between the outer surface of static shell inner surface and running shaft.
10, as the described a kind of revolving joint for high speed and high pressure hydraulic means in one of claim 1 or 5 or 6, it is characterized in that: the center of described running shaft is shaped on a circular liquid-through hole, its liquid outlet is opened on the end face of the running shaft of close solid of rotation, liquid entering hole is opened on the end face of the other end of running shaft, the end cap center that is connected with stationary housings has supply opening, a low pressure rotating seal ring is set between the internal surface of near outer surface the other end of running shaft and stationary housings at least, and the end face of sealing ring and described end cap internal surface and running shaft surrounds a feed flow chamber.
11, a kind of revolving joint for high speed and high pressure hydraulic means as claimed in claim 10 is characterized in that: but described low-pressure fluid cooling water or the lubricant oil that is arranged in the liquid-through hole of rotating shaft center.
12, a kind of high-speed hydraulic rotating joint as claimed in claim 1, it is characterized in that: described running shaft radially extends to form the disc flange between another end cap near the oil outlet of solid of rotation and stationary housings, be evenly equipped with attachment hole on it, running shaft and solid of rotation coupled together by connecting bolt.
13, as the described high-speed hydraulic rotating joint in one of claim 1 or 5 or 6, it is characterized in that: described filler opening and oil outlet are circular hole and intersect vertically along extending radially inwardly with separately oil through of running shaft that described filler opening is arranged in the annular pressure chamber all the time.
14, a kind of high-speed hydraulic rotation coupling as claimed in claim 5, it is characterized in that: a described tool oil outlet radially intersects vertically with oil through, and another oil outlet is located on the end face of running shaft.
15, a kind of high-speed hydraulic rotation coupling as claimed in claim 5 is characterized in that: described two oil outlets all radially intersect vertically with separately oil through.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93120024 CN1029422C (en) | 1993-12-16 | 1993-12-16 | Revolving joint for high speed and high pressure hydraulic means |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93120024 CN1029422C (en) | 1993-12-16 | 1993-12-16 | Revolving joint for high speed and high pressure hydraulic means |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1089709A CN1089709A (en) | 1994-07-20 |
| CN1029422C true CN1029422C (en) | 1995-08-02 |
Family
ID=4993127
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 93120024 Expired - Fee Related CN1029422C (en) | 1993-12-16 | 1993-12-16 | Revolving joint for high speed and high pressure hydraulic means |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1029422C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1737416B (en) * | 2004-08-21 | 2010-05-05 | Khs机械及设备制造股份公司 | Long term lubrication system in one axle bearing |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101776096B (en) * | 2009-12-30 | 2012-06-13 | 陶宝康 | Oil distribution disc of power head |
| CN102042450B (en) * | 2010-12-06 | 2012-06-27 | 长沙中联消防机械有限公司 | Centre revolving joint for engineering machinery |
| CN102913703B (en) * | 2012-09-20 | 2014-09-10 | 宁波敏宝卫浴五金水暖洁具有限公司 | Connection structure between shower head and shower faucet |
| CN102913740A (en) * | 2012-10-29 | 2013-02-06 | 山西天创液压机械设备制造有限公司 | Rotary oil way distributor |
| CN107902496A (en) * | 2017-11-13 | 2018-04-13 | 张巨清 | A kind of high pressure rotary sealing liquid feed device |
| CN109236978B (en) * | 2018-11-06 | 2020-08-07 | 浙江大学 | High-resolution adjustable stepping actuating mechanism |
-
1993
- 1993-12-16 CN CN 93120024 patent/CN1029422C/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1737416B (en) * | 2004-08-21 | 2010-05-05 | Khs机械及设备制造股份公司 | Long term lubrication system in one axle bearing |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1089709A (en) | 1994-07-20 |
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