CN102705619A - Water, electricity and liquid multi-channel center revolving joint and engineering machinery with same - Google Patents
Water, electricity and liquid multi-channel center revolving joint and engineering machinery with same Download PDFInfo
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- CN102705619A CN102705619A CN2012101774566A CN201210177456A CN102705619A CN 102705619 A CN102705619 A CN 102705619A CN 2012101774566 A CN2012101774566 A CN 2012101774566A CN 201210177456 A CN201210177456 A CN 201210177456A CN 102705619 A CN102705619 A CN 102705619A
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Abstract
The invention discloses a water, electricity and liquid multi-channel center revolving joint and engineering machinery with the same. The water, electricity and liquid multi-channel center revolving joint comprises a body core, an oil channel revolving body, an electricity channel revolving body and a water channel revolving body, wherein an axial through hole through which the water channel revolving body passes is formed in the centers of the body core and the electricity channel revolving body; the oil channel revolving body is sleeved outside the body core; the water channel revolving body passes through the axial through hole of the body core and an electricity channel stator; and the lower end of the water channel revolving body is communicated with a lower frame connecting water pipe. The water channel revolving body is a straight-through pipe which passes through the centers of the oil channel revolving body and the electricity channel revolving body, and the center of the body core is completely used as a water channel, so that the space of the body core can be fully utilized, the structure is simplified, and the size is reduced; and meanwhile, a corner is eliminated in the straight-through water channel, so that the pressure loss of water flow can be reduced, and the joint is convenient to install.
Description
Technical field
The present invention relates generally to engineering machinery field, particularly a kind of water power liquid multi-path centre revolving joint, and the engineering machinery with this water power liquid multi-path centre revolving joint.
Background technique
A lot of engineering machinery (like high-altitude fire-fighting truck, high-jetting vehicle etc.) all have the dress of going up and chassis.When work, the chassis is motionless, needs 360 degree revolution operations and go up dress.Most of hydraulic oil power source, power supply and fire-fighting water are installed on the chassis; When being contained in any angle of revolution on guaranteeing; Dress hydraulic oil, electricity and water can both successfully be supplied with in the chassis; The general centre revolving joint that adopts connects dress and chassis, to realize water, hydraulic oil and electrical signal safe and reliable transmission between last dress and chassis.
Water power liquid multi-path centre revolving joint generally includes mandrel, water route solid of rotation, oil circuit solid of rotation, circuit solid of rotation; And the assembly that drives each solid of rotation rotation; Mandrel wherein is fixedly mounted on the vehicle frame, and water route solid of rotation and oil circuit solid of rotation are set on the mandrel, rotate around mandrel.There is following problem in this structural design:
1, the mandrel space is underused, and the overall structure volume is bigger, and it is bigger to take up room;
2, the flow of centre revolving joint hydraulic oil that can transmit and water is little, and because of there are 90 degree corners in the water route, the pressure loss is bigger;
3, solid of rotation radial dimension in water route is big, and it is inconvenient to cause centre revolving joint to install.
Therefore, novel water power liquid multi-path centre revolving joint need be provided, overcome the problems referred to above.
Summary of the invention
In view of this, the present invention proposes a kind of water power liquid multi-path centre revolving joint and has the engineering machinery of this joint, and it can make full use of body core space, reduces structural volume, can reduce the water flow pressure loss simultaneously, and convenient the installation.
To achieve these goals, one aspect of the present invention provides a kind of water power liquid multi-path centre revolving joint, comprises body core, oil circuit solid of rotation, circuit solid of rotation, water route solid of rotation, wherein,
The center of said body core and said circuit solid of rotation offers and is used for the axial hole that the water route solid of rotation passes;
Said oil circuit solid of rotation is set in the outside of said body core;
Said water route solid of rotation passes from the axial hole of said body core and said circuit solid of rotation, and the lower end of said water route solid of rotation is connected cross current with getting off.
Further, said circuit solid of rotation is arranged on the top of said body core, comprises circuit stator and circuit rotor, wherein,
Said circuit stator is connected with said body core or is one-body molded, and said circuit rotor is connected with said oil circuit solid of rotation; Said circuit stator center offers and is used for the axial hole that the water route solid of rotation passes.
Further, also comprise mounting bracket, said water route solid of rotation is connected through said mounting bracket with said oil circuit solid of rotation, and said mounting bracket also is used for being connected with turntable.
Further, said body core is cylindrical, and it is provided with first axial passage and radial passage, and said first axial passage is communicated with said radial passage, and said first axial passage is in the external communications of said body core lower end and said body core; Offer circular groove with corresponding part, said radial passage on the outer circumferential face of said body core;
Offer the radial direction through hole that is used for outside fuel feeding on the said oil circuit solid of rotation, said radial direction through hole is communicated with the radial passage of said body core through the circular groove of said body core.
Further, the upper end of said body core is fixedly connected with gland, and said gland at least partly covers the upper-end surface of said oil circuit solid of rotation.
Further, the outer circumferential face of said body core offers guiding groove, is provided with the guide ring that supports said oil circuit solid of rotation rotation in the said guiding groove.
Further, said body core lower end is connected with lower end cap, and said lower end cap offers second axial passage and radial direction through hole; Said second axial passage is communicated with said radial passage, and said radial direction through hole is in communication with the outside, and said second axial passage is communicated with first axial passage of said body core;
The center of said lower end cap also offers and is used for the axial hole that said water route solid of rotation passes, and the lower end of said water route solid of rotation is positioned at the axial hole of said lower end cap.
Further, also offer first seal groove on the said body core outer circumferential face, be provided with Sealing in said first seal groove, be used for the sealing between said oil circuit solid of rotation and the said body core;
Offer second seal groove with solid of rotation corresponding part, said water route on the inwall of the axial hole of said lower end cap, and be provided with Sealing in said second seal groove.
Further, said lower end cap integral body is prismatic; The corresponding prismatic side of the radial direction through hole of said lower end cap is provided with.
Further, said circuit stator is connected with the stator cable that leads to the chassis through conductive hoop; Said circuit rotor is connected with the rotor cable that leads to last dress through static wire.
Another aspect of the present invention also provides a kind of engineering machinery, and it is provided with aforesaid water power liquid multi-path centre revolving joint.
Water route of the present invention solid of rotation is designed to pass the straight-through revolution water pipe at oil circuit solid of rotation and circuit solid of rotation center; Body core center is used as waterway channel fully, the outside sheathed oil circuit solid of rotation of body core, on the one hand; Body core space is fully utilized; The periphery at body core center can all be used to arrange oil circuit, increased the flow of centre revolving joint transmission hydraulic oil and water, and overall structure is simple, compact; On the other hand, the water route solid of rotation is linearly arranged the water route, eliminates 90 ° of corners, has reduced the pressure loss of current, and has reduced the radial dimension of water route solid of rotation, is convenient to the installation of centre revolving joint.
Description of drawings
The accompanying drawing that constitutes a part of the present invention is used to provide further understanding of the present invention, and illustrative examples of the present invention and explanation thereof are used to explain the present invention, does not constitute improper qualification of the present invention.In the accompanying drawings:
Fig. 1 provides a kind of water power liquid multi-path centre revolving joint embodiment's structural representation for the present invention;
Fig. 2 is an embodiment's shown in Figure 1 partial sectional view;
Fig. 3 is the partial sectional view of embodiment's shown in Figure 1 different amount.
Reference numerals list:
1-bolt, the 2-connection water pipe of getting off, 3-lower end cap, 4-oil circuit solid of rotation, 5-bolt, 6-first axial passage, 7-mounting bracket, 8-bolt; The radial passage of 9-body core, 10-screw, the radial direction through hole of 11-lower end cap, 12-second axial passage, 13-circuit rotor, 14-bolt, 15-circular groove; 16-water route solid of rotation (revolution water pipe), 17-upper junction plate, 18-dust cover, 19-rotor cable, 20-circuit stator, 21-adpting flange; The 22-bolt, the radial direction through hole of 23-oil circuit solid of rotation, 24-gland, 25-guiding groove, 26-body core, 27-first seal groove; The 28-pad, 29-seal ring, 30-second seal groove, 31-locating stud, 32-stator cable, 33-bolt.
Embodiment
Need to prove that under the situation of not conflicting, embodiment and the characteristic among the embodiment among the present invention can make up each other.Below with reference to accompanying drawing and combine embodiment to specify the present invention.
Basic thought of the present invention is: the water route solid of rotation that has 90 ° of turnings of the prior art is improved to straight-through water route; And pass from body in-core portion; Body in-core portion revolution water pipe peripheral disposition oil circuit, circuit make full use of body in-core portion space, and water power liquid multi-path centre revolving joint overall volume is reduced; This improvement both can reduce hydraulic losses, can reduce volume again, be convenient to install.
Be depicted as the embodiment of a kind of water power liquid multi-path centre revolving joint provided by the invention like Fig. 1-3; Comprise body core 26, oil circuit solid of rotation 4, circuit solid of rotation, water route solid of rotation 16; Wherein, the center of body core 26 and circuit solid of rotation offers and is used for the axial hole that water route solid of rotation 16 passes; Oil circuit solid of rotation 4 is set in the outside of body core 26; The revolution water pipe that water route solid of rotation 16 passes for the axial hole from body core 26 and circuit solid of rotation, the lower end of water route solid of rotation 16 are connected water pipe 2 connections with getting off.
The water power liquid multi-path centre revolving joint that provides of the present invention, its water route solid of rotation 16 is designed to pass the straight-through water route at body core 26 and circuit solid of rotation center, and body core 26 centers are fully as waterway channel; Body core 26 outside sheathed oil circuit solid of rotation 4; On the one hand, body core 26 spaces are fully utilized, and the periphery at body core 26 centers can all be used to arrange oil circuit; Increased the flow of centre revolving joint transmission hydraulic oil and water, and overall structure is simple, compact; On the other hand, the structure of water route solid of rotation 16 is linearly arranged the water route, eliminates 90 ° of corners, has reduced the pressure loss of current, and has reduced the radial dimension of water route solid of rotation 16, is convenient to the installation of centre revolving joint.
Shown in Fig. 2 and 3, water route solid of rotation 16 may be embodied as the siphunculus that passes from body core 26 and circuit solid of rotation center, with this as the revolution water pipe; Also can directly utilize the inner through hole of body core 26 and circuit solid of rotation as the water route, and connect the revolution water pipe in the upper end, water route.
As a preferred embodiment, as shown in Figures 2 and 3, circuit solid of rotation of the present invention is arranged on the top of body core 26; Comprise circuit stator 20 and circuit rotor 13; Wherein, circuit stator 20 is connected with body core 26 or is one-body molded, and circuit rotor 13 is connected with oil circuit solid of rotation 4; Circuit stator 20 centers offer and are used for the axial hole that water route solid of rotation 16 passes.At this moment, water route solid of rotation 16 passes the axial hole at circuit stator 20 and body core 26 centers from top to bottom successively.
Need to prove; Though the present invention is arranged on body core 26 tops as preferred embodiment with the circuit solid of rotation; But,, also can be arranged on the circuit solid of rotation below of body core 26 according to the difference of design requirement; Two kinds of mode of executions are just different on the relation of position, and the core of its mentality of designing all is to adopt straight-through water route solid of rotation 16; This paper only is arranged on body core 26 tops to the circuit solid of rotation and discusses in more detail for the various embodiments of basis to centre revolving joint.
When centre revolving joint of the present invention is for ease worked; Water route solid of rotation 16 turns round with oil circuit solid of rotation 4 synchronously; The present invention can also comprise mounting bracket 7 on the basis of the foregoing description; Water route solid of rotation 16 is connected through mounting bracket 7 with oil circuit solid of rotation 4, and mounting bracket 7 also is used for being connected with turntable.As shown in figures 1 and 3; Be set with upper junction plate 17 on the water route solid of rotation 16; This upper junction plate 17 is connected with the upper end of mounting bracket 7 through bolt 14; The lower end of mounting bracket 7 is fixedly connected with oil circuit solid of rotation 4 through bolt 5, realizes the synchronous rotation of water route solid of rotation 16 and oil circuit solid of rotation 4 thus.In addition, shown in Fig. 1-3, circuit rotor 13 is connected with screw 10 with the oil circuit solid of rotation 4 preferred adpting flanges 21 that adopt.During the turntable rotation, drive mounting bracket 7 and rotate, oil circuit solid of rotation 4, water route solid of rotation 16, circuit rotor 13 be rotation synchronously thereupon.
Body core 26 centers in the foregoing description have axial hole, and the axial hole periphery can all be used to be provided with oil circuit, and are communicated with body core 26 outer sheathed oil circuit solid of rotation 4 oil circuits, outwards fuel feeding.Because the optional scope of axial hole peripheral space of body core 26 is bigger, oil circuit setting can be designed to different arrangements according to different demands.
A kind of preferred embodiment as body core 26; Body core 26 can be for cylindrical; Can be provided with first axial passage 6 on it and be communicated with radial passage 9, and first axial passage 6 is in the external communications of body core 26 lower ends and body core 26 with radial passage 9, the first axial passages 6; Offer circular groove 15 with 9 corresponding parts, radial passage on the outer circumferential face of body core 26; Offer the radial direction through hole 23 that is used for outside fuel feeding on the oil circuit solid of rotation 4, this radial direction through hole 23 is communicated with the radial passage 9 of body core 26 through the circular groove 15 of body core 26.
Hydraulic oil flows into body core 26 from body core 26 bottoms; Then successively through first axial passage 6 and radial passage 9 of body core 26; Flow to the circular groove 15 of body core 26, the radial direction through hole 23 on the oil circuit solid of rotation 4 is corresponding with circular groove 15 positions, and no matter what position oil circuit solid of rotation 4 rotates to; Can realize that oil circuit is unimpeded, fuel feeding is carried out in the outside.
Oil circuit solid of rotation 4 may move relative to body core 26 in rotary course vertically, moves up in order to limit oil circuit solid of rotation 4, and the upper end preferred immobilization of body core 26 of the present invention is connected with gland 24, and gland 24 part at least covers oil circuit solid of rotation 4.Gland 24 circular, and also offer at the center of gland 24 and to be used for the axial hole that water route solid of rotation 16 passes, and corresponding with the axial hole position of body core 26.Gland 24 diameters should be slightly larger than the diameter of body core 26, so that part covers oil circuit solid of rotation 4 at least, the restriction rotator shaft is to moving up.As shown in Figure 2, gland 24 is arranged on the upper end of body core 26 through bolt 22, and circuit stator 20 then is fixedly installed on the gland 24 through bolt 8, and then is connected with body core 26.According to above-mentioned discussion to body core 26 and circuit stator 20, body core 26 can be one-body molded with circuit stator 20, if the two is formed in one, then gland 24 corresponding positions can be designed as and the identical flange of gland 24 shapes, to reach the effect of gland 24.
The oil circuit solid of rotation 4 of water power liquid multi-path centre revolving joint of the present invention and the space between the body core 26; In order to make oil circuit solid of rotation 4 body core 26 realizations rotation swimmingly relatively; Body core 26 outer circumferential faces offer guiding groove 25, are provided with the guide ring that supports 4 rotations of oil circuit solid of rotation in the guiding groove 25.Guiding groove 25 and the effect of guide ring are similar to the effect of bearing, lubricate and supporting effect for the rotation of oil circuit solid of rotation 4 relative body cores 26 provides.As shown in Figure 2, guiding groove 25 preferably is opened in the top and/or the bottom of body core 26.
For the ease of being connected of center sub and following vehicle frame or chassis, guarantee that being connected of water route and oil circuit is unobstructed, body core of the present invention 26 lower ends can also be connected with lower end cap 3, and lower end cap 3 offers second axial passage 12 and the radial direction through hole 11; Second axial passage 12 is communicated with radial direction through hole 11, and radial direction through hole 11 is in communication with the outside, and second axial passage 12 is communicated with first axial passage 6 of body core 26; The center of lower end cap 3 also offers and is used for the axial hole that water route solid of rotation 16 passes, and the lower ends downward of water route solid of rotation 16 extends in the axial hole of lower end cap 3.Water route solid of rotation 16 is connected water pipe 2 and is communicated with getting off by the axial hole of lower end cap 3; Second axial passage 12 in first axial passage 6 in the body core 26 and the lower end cap 3 is communicated with radial direction through hole 11 successively, as the oil circuit of water power liquid multi-path centre revolving joint.As shown in Figure 2, body core 26 and the lower end cap 3 preferred bolts 33 that use are connected, and the corresponding position of body core 26 and lower end cap 3 surface of contact offers locating slot, and locating stud 31 is set therein, make things convenient for location and installation; In addition, for the sealing between the axial hole that is interconnected that guarantees lower end cap 3 and body core 26, the periphery of the axial hole between lower end cap 3 and body core 26 also is provided with seal ring 29.Further, also be provided with pad 28 between body core 26 and the lower end cap 3, this packing ring 28 is preferably copper backing.
In the volume allowed band; A plurality of first axial passages 6 and radial passage 9 can be offered in body core 26 inside; Correspondingly; Can offer a plurality of radial direction through hole 23 in the oil circuit solid of rotation 4, a plurality of second axial passages 12 and radial direction through hole 11 can be offered in the inside of lower end cap 3, to increase the flux of hydraulic oil oil circuit.
Further, lower end cap 3 of the present invention is preferably prismatic, and radial direction through hole 11 corresponding prismatic sides are provided with, and on the one hand, make the outlet of radial direction through hole 11 be positioned on the side, and conveniently external pipeline is communicated with radial direction through hole 11 on smooth side; On the other hand, lower end cap 3 is designed to prismatic, can reduce its volume and deadweight, and is convenient to install.As shown in Figure 1, it is eight prismatic that lower end cap 3 of the present invention is preferably, and also can be pentagonal prism, six prisms etc.Need to prove; Lower end cap 3 can also be designed to off-gauge prismatic, as, between prismatic side and the side little arcuate flanks is arranged; Such shape is that circumference evenly cuts out flat side in upper edge, cylindrical side, and the side is not directly to link to each other with the side.
Discussion according to above-mentioned each embodiment; Have a fixed gap between the body core 26 of water power liquid multi-path centre revolving joint of the present invention and the oil circuit solid of rotation 4; Therefore; Can be provided with Sealing offering on body core 26 outer circumferential faces in first seal groove, 27, the first seal grooves 27, be used for the sealing between oil circuit solid of rotation 4 and the body core 26.It should be noted that; Though the present invention does not limit the particular location of first seal groove 27 on body core 26 outer circumferential faces; But, it will be appreciated by those skilled in the art that first seal groove, 27 quantity are a plurality of; And first seal groove 27 all should be offered in the below of the top of the circular groove 15 of the topmost part of body core 26, the circular groove 15 of foot, also preferably offers first seal groove 27 between the circular groove 15.
In addition; As shown in Figures 2 and 3; Water route solid of rotation 16 is connected water pipe 2 water routes and is communicated with getting off by the axial hole of lower end cap 3; Getting off connects water pipe 2 two ends and is fixedly connected with flange respectively, and upper flanges is connected through screw (or bolt) 1 with lower end cap 3, the following end flange connection water pipe (not shown) of getting off.In order to realize that water route solid of rotation 16 can rotate freely; The inwall of the axial hole of itself and lower end cap 3 preferably adopts Spielpassung; Cooperate too closely and can not adopt, therefore, also offer second seal groove 30 with water route solid of rotation 16 corresponding parts on the inwall of the axial hole of lower end cap 3; And be provided with Sealing in second seal groove 30, the outer wall of anti-sealing solid of rotation 16 along the water route runs off.
Because body core 26 of the present invention and lower end cap 3 relative fixed needn't rotate, its inner stator cable 32 that allows passes through, and circuit stator 20 is connected with stator cable 32 through the conductive hoop that the lower end is provided with, and stator cable 32 leads to the chassis; Circuit rotor 13 is connected with rotor cable 19 towards last dress through static wire, when rotor and stator relatively rotate, just can realize the transmission of electrical signal.As shown in Figure 2, circuit solid of rotation top is provided with dust cover 18, helps in real work to prevent that dust etc. from getting into the proper functioning that influence circuit rotor 13 and circuit stator 20 in the circuit solid of rotation.
In sum, water power liquid multi-path centre revolving joint of the present invention has the following advantages:
1, the inner space of body core is fully utilized, and the radial dimension of water route solid of rotation reduces greatly; The overall structure of centre revolving joint is simple, compact, and spatial volume is little;
2, the space of body in-core fully is used to arrange oil circuit and water route, and the hydraulic oil that centre revolving joint can transmit and the flow of water are big, and the water route solid of rotation is designed to straight-through water route, and the pressure loss of current is little;
3, easy for installation.
Correspondingly, the present invention also provides a kind of engineering machinery, and it is provided with aforesaid water power liquid multi-path centre revolving joint.Can know according to existing technology, use the field of this type of water power liquid multi-path centre revolving joint a lot, so this project machinery can comprise Elevating platform fire truck, high-jetting vehicle, aerial ladder apparatus etc. widely.
The above is merely preferred embodiment of the present invention, and is in order to restriction the present invention, not all within spirit of the present invention and principle, any modification of being done, is equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (11)
1. a water power liquid multi-path centre revolving joint comprises body core (26), oil circuit solid of rotation (4), circuit solid of rotation, water route solid of rotation (16), it is characterized in that, wherein,
The center of said body core (26) and said circuit solid of rotation offers and is used for the axial hole that water route solid of rotation (16) passes;
Said oil circuit solid of rotation (4) is set in the outside of said body core (26);
Said water route solid of rotation (16) passes from the axial hole of said body core (26) and said circuit solid of rotation, and the lower end of said water route solid of rotation (16) is connected water pipe (2) and is communicated with getting off.
2. water power liquid multi-path centre revolving joint according to claim 1 is characterized in that said circuit solid of rotation is arranged on the top of said body core (26), comprises circuit stator (20) and circuit rotor (13), wherein,
Said circuit stator (20) is connected with said body core (26) or is one-body molded, and said circuit rotor (13) is connected with said oil circuit solid of rotation (4); Said circuit stator (20) center offers and is used for the axial hole that water route solid of rotation (16) passes.
3. water power liquid multi-path centre revolving joint according to claim 2; It is characterized in that; Also comprise mounting bracket (7), said water route solid of rotation (16) is connected through said mounting bracket (7) with said oil circuit solid of rotation (4), and said mounting bracket (7) also is used for being connected with turntable.
4. water power liquid multi-path centre revolving joint according to claim 2; It is characterized in that; Said body core (26) is cylindrical; It is provided with first axial passage (6) and radial passage (9), and said first axial passage (6) is communicated with said radial passage (9), and said first axial passage (6) is in the external communications of said body core (26) lower end and said body core (26); Offer circular groove (15) with corresponding part, said radial passage (9) on the outer circumferential face of said body core (26);
Offer the radial direction through hole (23) that is used for outside fuel feeding on the said oil circuit solid of rotation (4), said radial direction through hole (23) is communicated with the radial passage (9) of said body core (26) through the circular groove (15) of said body core (26).
5. water power liquid multi-path centre revolving joint according to claim 4 is characterized in that the upper end of said body core (26) is fixedly connected with gland (24), and said gland (24) at least partly covers the upper-end surface of said oil circuit solid of rotation (4).
6. water power liquid multi-path centre revolving joint according to claim 5 is characterized in that the outer circumferential face of said body core (26) offers guiding groove (25), is provided with the guide ring that supports said oil circuit solid of rotation (4) rotation in the said guiding groove (25).
7. according to each described water power liquid multi-path centre revolving joint among the claim 2-5; It is characterized in that; Said body core (26) lower end is connected with lower end cap (3), and said lower end cap (3) offers second axial passage (12) and radial direction through hole (11); Said second axial passage (12) is communicated with said radial direction through hole (11), and said radial direction through hole (11) is in communication with the outside, and said second axial passage (12) is communicated with first axial passage (6) of said body core (26);
The center of said lower end cap (3) also offers and is used for the axial hole that said water route solid of rotation (16) passes, and the lower end of said water route solid of rotation (16) is positioned at the axial hole of said lower end cap (3).
8. water power liquid multi-path centre revolving joint according to claim 7; It is characterized in that; Also offer first seal groove (27) on said body core (26) outer circumferential face; Be provided with Sealing in said first seal groove (27), be used for the sealing between said oil circuit solid of rotation (4) and the said body core (26);
Offer second seal groove (30) with said water route solid of rotation (16) corresponding part on the inwall of the axial hole of said lower end cap (3), and be provided with Sealing in said second seal groove (30).
9. water power liquid multi-path centre revolving joint according to claim 8 is characterized in that, said lower end cap (3) integral body is prismatic; The corresponding prismatic side of the radial direction through hole (11) of said lower end cap (3) is provided with.
10. water power liquid multi-path centre revolving joint according to claim 9 is characterized in that, said circuit stator (20) is connected with the stator cable (32) that leads to the chassis through conductive hoop; Said circuit rotor (13) is connected with the rotor cable (19) that leads to last dress through static wire.
11. an engineering machinery is characterized in that, is provided with like any described water power liquid multi-path centre revolving joint among the claim 1-10.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210177456.6A CN102705619B (en) | 2012-05-31 | 2012-05-31 | Water, electricity and liquid multi-channel center revolving joint and engineering machinery with same |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210177456.6A CN102705619B (en) | 2012-05-31 | 2012-05-31 | Water, electricity and liquid multi-channel center revolving joint and engineering machinery with same |
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| Publication Number | Publication Date |
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| CN102705619A true CN102705619A (en) | 2012-10-03 |
| CN102705619B CN102705619B (en) | 2015-06-10 |
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| CN201210177456.6A Active CN102705619B (en) | 2012-05-31 | 2012-05-31 | Water, electricity and liquid multi-channel center revolving joint and engineering machinery with same |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112628507A (en) * | 2020-10-14 | 2021-04-09 | 杭州安杰诺智能机械有限公司 | Gas rotary joint structure |
| WO2022021517A1 (en) * | 2020-07-31 | 2022-02-03 | 三一汽车制造有限公司 | Central swivel joint, hydraulic control system, and working vehicle |
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| CN102011912A (en) * | 2010-11-19 | 2011-04-13 | 太原重工股份有限公司 | Rotary three-channel independent transmission joint |
| CN201897031U (en) * | 2010-12-13 | 2011-07-13 | 郑州金鑫机械制造有限公司 | Rotary joint |
| CN202082530U (en) * | 2011-05-11 | 2011-12-21 | 江阴长龄液压科技有限公司 | Multi-channel revolving joint |
| CN202647021U (en) * | 2012-05-31 | 2013-01-02 | 北京市三一重机有限公司 | Water-electricity-liquid multi-channel centre revolving joint and construction machinery adopting same |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022021517A1 (en) * | 2020-07-31 | 2022-02-03 | 三一汽车制造有限公司 | Central swivel joint, hydraulic control system, and working vehicle |
| CN112628507A (en) * | 2020-10-14 | 2021-04-09 | 杭州安杰诺智能机械有限公司 | Gas rotary joint structure |
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| CN102705619B (en) | 2015-06-10 |
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