CN202252527U

CN202252527U - Rotating connector

Info

Publication number: CN202252527U
Application number: CN201120386621XU
Authority: CN
Inventors: 张建森; 周乃平; 石兰芳
Original assignee: HUBEI TELI HYDRAULIC CO Ltd
Current assignee: HUBEI TELI HYDRAULIC CO Ltd
Priority date: 2011-10-12
Filing date: 2011-10-12
Publication date: 2012-05-30
Anticipated expiration: 2021-10-12

Abstract

The utility model discloses a rotating connector comprising a core body (10) and a shell (20) sleeved outside the core body, wherein the core body is internally provided with a plurality of first channels (11) extending along the axial direction of the core body; the core body is divided into a first part (12) and a second part (13) along the axial direction; the first part is sleeved inside the shell; the second part is positioned outside the shell; the shell can rotate relative to the core body; the second part of the core body is also provided with second channels, the outlets of which are positioned at the outer circumferential surface of the second part; and the second channels are communicated with the first channels. By using the rotating connector, the arrangement of pipelines can be simplified, and the connection and the maintenance of the pipelines can be facilitated.

Description

A kind of swivel coupling

Technical field

The utility model relates to the hydraulic equipment field, particularly, relates to a kind of swivel coupling that is used for the hydraulic oil control mode.

Background technique

Swivel coupling is a kind of multi-path rotation oil circuit connection set, and this swivel coupling is applicable to the engineering machinery that disposes rotation supporting structure.

Common swivel coupling has hydraulic gyration joint and Water/oil dual-purpose swivel coupling.The former is widely used in engineering machinery such as excavator, hydraulic hoist, is used for transmission pressure oil; The latter is applied to be used to accomplish pressure oil, the transmission of power and water signal between upper and lower platform on the special vehicles such as fire-fighting truck, high-altitude operation vehicle more.

Shown in Fig. 1 is a kind of relevant swivel coupling, and this swivel coupling comprises core body 10 and housing 20, and core body 10 is used for linking to each other with equipment such as bottom vehicle frame, housing 20 be sheathed on the outside of core body 10 and relatively core body 10 rotate.Be provided with a plurality of first passages 11 that extend along the axial direction of this core body 10 in the core body 10; Be formed with a plurality of second circular grooves 18 between core body 10 and the housing 20, this second circular groove 18 is through being arranged on third channel 21 and the first passage 11 in the core body 10 and the external communications of swivel coupling on the housing 20.First passage 11 seals through O type circle 90 with the joint of transport pipe.In said structure, be transported to the hydraulic oil of getting off in the various hydraulic actuators of getting on the bus through the first passage on the core body 10 11, second circular groove 18 and third channel 21.

But when using above-mentioned swivel coupling, the joint that is connected with first passage 11 can only be connected on down truck system, when operator keep in repair at connecting pipeline and to pipeline, can only stand under the chassis of vehicle and operate very inconvenience.If O type circle 90 damages first passage 11 places that cause swivel coupling and produces leakage of oil, also be not easy to be found by the operator.

Therefore, how to make the line arrangement of centre revolving joint and keep in repair the more convenient technical problem that related domain needs to be resolved hurrily that becomes.

The model utility content

The purpose of the utility model provides a kind of swivel coupling, uses this swivel coupling can be so that simplify line arrangement, and is convenient to take over and keeps in repair with pipeline.

To achieve these goals, the utility model provides a kind of swivel coupling, and this swivel coupling comprises the housing that core body is outside with being enclosed within this core body; Be provided with a plurality of first passages that extend along the axial direction of this core body in the said core body; Wherein, said core body is divided into first portion and second portion vertically, and said first portion is socketed in the said housing; Said second portion is positioned at outside the said housing; Said housing can rotate with respect to said core body, also is provided with the second channel that exports on the external peripheral surface that is positioned at this second portion on the said second portion of said core body, and this second channel communicates with said first passage.

Preferably, said first passage and said second channel are many, and said first passage is corresponding one by one with said second channel.

Preferably, said swivel coupling also comprises font, and this font is arranged on the opening of said second channel, with the external communications with said second channel and said swivel coupling.

Preferably, said swivel coupling also comprises packing ring, and this packing ring is arranged between the said second portion of said housing and said core body.

Preferably, there is the gap between the said second portion of said housing and said core body.

Preferably, said swivel coupling also comprises supporting element, is formed with first circular groove between the outer surface of the said first portion of said core body and the said housing, and said supporting element is arranged in said first circular groove.

Preferably, the friction that produces between friction that produces between said supporting element and the said housing and said supporting element and the said core body is rolling friction.

Preferably, said supporting element is spherical, is formed with on the said housing and corresponding first through hole to be opened/closed of this first circular groove.

Preferably, said swivel coupling also comprises the shutoff bolt, and said first through hole is a tapped hole, and said shutoff bolt cooperates with said first through hole, so that said Metal Ball is limited in said first circular groove.

Preferably; Said swivel coupling also comprises the seal ring that is arranged between said core body and the said housing; Be formed with a plurality of second circular grooves between said core body and the said housing; This second circular groove is through being arranged on third channel and the first passage in the said core body and the external communications of said swivel coupling on the said housing, and the both sides of each said second circular groove are provided with said seal ring.

Preferably, said swivel coupling comprises cover piece, and this cover piece is arranged in the said first passage, with the closure of openings of the said first passage on the end face that will be exposed to said core body.

Through on the external peripheral surface of the second portion of the core body of swivel coupling, the second channel identical with first passage being set, the pipeline that can link to each other with swivel coupling in the system layout of getting on the bus, thus be convenient to the layout and the maintenance of pipeline.

Other feature and advantage of the utility model will partly specify in embodiment subsequently.

Description of drawings

Accompanying drawing is the further understanding that is used to provide the utility model, and constitutes the part of specification, is used to explain the utility model with following embodiment, but does not constitute the restriction to the utility model.In the accompanying drawings:

Fig. 1 is the main sectional view of swivel coupling of the prior art;

Fig. 2 is the main sectional view according to the swivel coupling of a kind of mode of execution of the utility model;

Fig. 3 is the sectional view of the swivel coupling shown in Fig. 2 at the A-A place;

Fig. 4 is the sectional view of the swivel coupling shown in Fig. 2 at the B-B place; With

Fig. 5 is the main sectional view according to the another kind of mode of execution of the utility model.

Description of reference numerals

10 core bodys, 11 first passages

12 first portions, 13 second portions

14 second channels, 15 first circular grooves

16 first through holes, 17 shutoff bolts

18 second circular grooves, 20 housings

21 third channels, 30 fonts

40 supporting elements, 50 seal rings

60 packing rings, 70 cover pieces

90O shape circle

Embodiment

Be elaborated below in conjunction with the embodiment of accompanying drawing to the utility model.Should be understood that embodiment described herein only is used for explanation and explains the utility model, is not limited to the utility model.

Fig. 2 is the main sectional view according to the swivel coupling of a kind of mode of execution of the utility model; Shown in figure, the utility model provides a kind of swivel coupling, and this swivel coupling comprises core body 10 and the housing 20 that is enclosed within these core body 10 outsides; Be provided with a plurality of first passages 11 that extend along the axial direction of this core body 10 in the core body 10; Wherein, core body 10 is divided into first portion 12 and second portion 13 vertically, and first portion 12 is socketed in the housing 20; Second portion 13 is positioned at outside the housing 20; Housing 20 can rotate with respect to core body 10, also is provided with the second channel 14 that exports on the external peripheral surface that is positioned at this second portion 13 on the second portion 13 of core body 10, and this second channel 14 communicates with first passage 11.

After on the second portion 13 second channel 14 being set, the opening of second channel 14 is exposed in the truck system, therefore, can the joint of hydraulic oil delivery pipe be arranged in the last truck system of engineering vehicle.When operator when the hydraulic oil dispatch tube is installed, can the space bigger on truck system operate, more convenient.And the joint of hydraulic oil dispatch tube is arranged in truck system, in case oil leakage phenomenon takes place, is found by operator easily, thereby the joint of hydraulic oil dispatch tube or hydraulic oil dispatch tube is repaired or replaced.

Usually, second channel 14 can be along the radially extension of core body 10, and the opening of a plurality of second channels 14 can be along on the external peripheral surface that circumferentially is distributed in second portion 13.

Usually, first passage 11 is many with second channel 14, and first passage 11 is corresponding one by one with second channel 14.

For the ease of being that transport pipe is connected with the outside of swivel coupling, preferably, the described swivel coupling of the utility model can also comprise font 30, and this font 30 is arranged on the opening of second channel 14, with the external communications with second channel 14 and swivel coupling.

Like Fig. 3 is the sectional view of the swivel coupling shown in Fig. 2 at the A-A place, and shown in figure, each second channel 14 all can corresponding font 30.Usually, have through hole in the font 30, can the described swivel coupling of the utility model be communicated with the hydraulic oil dispatch tube.

Directly contacted in 13 minutes for fear of housing 20 and core body 10 second one and to produce friction and wearing and tearing housing 20 or core body 10; Preferably; The described swivel coupling of the utility model can also comprise packing ring 60, and this packing ring 60 is arranged between the second portion 13 of housing 20 and core body 10.

The method of avoiding housing 20 and core body 10 directly to contact has multiple; For example; Can have the gap between the second portion 13 of housing 20 and core body 10, thereby making can not produce between the second portion 13 of housing 20 and core body 10 contacts, and then avoided producing between the two friction.

When between housing 20 and core body 10, relatively rotating; In order to reduce the frictional force between housing 20 and the core body 10, preferably, the described swivel coupling of the utility model can also comprise supporting element 40; Be formed with first circular groove 15 between the outer surface of the first portion 12 of core body 10 and the housing 20; Supporting element 40 is arranged in first circular groove 15, thereby can reduce the area of contact between housing 20 and the core body 10 at least, and has therefore reduced the frictional force between housing 20 and the core body 10; Make that the rotation between housing 20 and the core body 10 is more smooth and easy, and reduced the wearing and tearing that housing 20 and core body 10 produce because of friction.Supporting element 40 can have various ways, for example, can be arranged on the backing plate in first circular groove 15, and this backing plate is supported between housing 20 and the core body 10, can reduce the area of contact between housing 20 and the core body 10.

Preferably, the friction that produces between the friction that produces between supporting element 40 and the housing 20 and supporting element 40 and the core body 10 is rolling friction.As everyone knows, the frictional force that rolling friction produces is less, helps relatively rotating between housing 20 and the core body 10.Supporting element 40 is that cylindrical, spherical, rugby shape etc. can rolling shape.

Preferably, supporting element 40 can be sphere, is formed with on the housing 20 and this first circular groove 15 corresponding first through holes 16 to be opened/closed.Supporting element 40 gets in first circular groove 15 through first through hole 16.Further preferably, supporting element 40 can be Metal Ball.Metal Ball can be processed by various wear-resisting metallic material, and normally, supporting element 40 can be steel ball.

Except that can reduce the frictional force between housing 20 and the core body 10 and alleviate housing 20 and core body 10 between wearing and tearing; Supporting element 40 can also play the effect that connects housing 20 and core body 10, and can prevent to produce between housing 20 and the core body 10 relatively moving of axial direction.

Fig. 4 is the sectional view of the swivel coupling shown in Fig. 2 at the B-B place, as can be seen from Figure 4, and in first circular groove 15 of supporting element 40 between housing 20 and core body 10.Preferably, a plurality of first circular grooves 15 can be set along the axial direction of swivel coupling, thereby make the frictional force between core body 10 and the housing 20 littler.

Can adopt multiple mode with 16 sealings of first through hole, for example, first through hole 16 sealed, perhaps in first through hole 16, pin, bolt etc. are set in the opening welded cover plate of first through hole 16.

Preferably, the described swivel coupling of the utility model can also comprise shutoff bolt 17, and through hole 16 is a tapped hole, and shutoff bolt 17 cooperates with through hole 16, so that supporting element 40 is limited in first circular groove 15.The lower surface of shutoff bolt 17 can contact with supporting element 40.When supporting element 40 is damaged, can shutoff bolt 17 be taken out, and change the Metal Ball of damaging.When needs are lubricated, also can shutoff bolt 17 be taken out, add lubricant greases through through hole 16 to first circular groove, 15 inside.

Usually, the described swivel coupling of the utility model can also comprise the seal ring 50 that is arranged between core body 10 and the housing 20.In swivel coupling, be formed with a plurality of second circular grooves 18 between core body 10 and the housing 20, this second circular groove 18 is through being arranged on third channel 21 and the first passage 11 in the core body 10 and the external communications of swivel coupling on the housing 20.Through the third channel 21 and second circular groove 18, can be sent to down truck system (going up truck system) to the hydraulic oil of last truck system (following truck system).The both sides of each second circular groove 18 are provided with seal ring 50, thereby prevent the hydraulic fluid leak in second circular groove 18.

The two ends of the core body 10 of the described swivel coupling of the utility model can be for what seal, that is, the two ends of the first passage 11 in the core body 10 are sealed.Can on two end faces of core body 10, first passage 11 be sealed welded cover plate.As shown in Figure 2, preferably, the described swivel coupling of the utility model comprises cover piece 70, and this cover piece 70 is arranged in the first passage 11, with the closure of openings of the first passage on the end face that will be exposed to core body 10 11.Can cover piece 70 be fixed in the first passage 11 through the mode of welding, in case leak-stopping is oily.

The described swivel coupling of the utility model; Through on the external peripheral surface of the second portion 13 of the core body 10 of swivel coupling, the second channel identical with first passage being set; The pipeline that can link to each other with swivel coupling in the system layout of getting on the bus, thus be convenient to the layout and the maintenance of pipeline.

More than combine accompanying drawing to describe the preferred implementation of the utility model in detail; But; The utility model is not limited to the detail in the above-mentioned mode of execution; In the technical conceive scope of the utility model, can carry out multiple simple variant to the technological scheme of the utility model, these simple variant all belong to the protection domain of the utility model.

Need to prove that in addition each the concrete technical characteristics described in above-mentioned embodiment under reconcilable situation, can make up through any suitable manner.For fear of unnecessary repetition, the utility model is to the explanation no longer separately of various possible compound modes.

In addition, also can carry out combination in any between the various mode of execution of the utility model, as long as its thought without prejudice to the utility model, it should be regarded as content disclosed in the utility model equally.

Claims

1. swivel coupling; This swivel coupling comprises core body (10) and is enclosed within the outside housing (20) of this core body (10); Be provided with a plurality of first passages (11) that extend along the axial direction of this core body (10) in the said core body (10); It is characterized in that said core body (10) is divided into first portion (12) and second portion (13) vertically, said first portion (12) is socketed in the said housing (20); Said second portion (13) is positioned at outside the said housing (20); Said housing (20) can rotate with respect to said core body (10), also is provided with the second channel (14) that exports on the external peripheral surface that is positioned at this second portion (13) on the said second portion (13) of said core body (10), and this second channel (14) communicates with said first passage (11).

2. swivel coupling according to claim 1 is characterized in that, said first passage (11) and said second channel (14) are many, and said first passage (11) is corresponding one by one with said second channel (14).

3. swivel coupling according to claim 1 is characterized in that, this swivel coupling also comprises font (30), and this font (30) is arranged on the opening of said second channel (14), with the external communications with said second channel (14) and said swivel coupling.

4. swivel coupling according to claim 1 is characterized in that, this swivel coupling also comprises packing ring (60), and this packing ring (60) is arranged between the said second portion (13) of said housing (20) and said core body (10).

5. swivel coupling according to claim 1 is characterized in that, has the gap between the said second portion (13) of said housing (20) and said core body (10).

6. swivel coupling according to claim 1; It is characterized in that; This swivel coupling also comprises supporting element (40); Be formed with first circular groove (15) between the outer surface of the said first portion (12) of said core body (10) and the said housing (20), said supporting element (40) is arranged in said first circular groove (15).

7. swivel coupling according to claim 6 is characterized in that, the friction that produces between the friction that produces between said supporting element (40) and the said housing (20) and said supporting element (40) and the said core body (10) is rolling friction.

8. swivel coupling according to claim 7 is characterized in that, said supporting element (40) is spherical, is formed with on the said housing (20) and corresponding first through hole to be opened/closed of this first circular groove (15) (16).

9. swivel coupling according to claim 8; It is characterized in that this swivel coupling also comprises shutoff bolt (17), said first through hole (16) is a tapped hole; Said shutoff bolt (17) cooperates with said first through hole (16), so that said Metal Ball is limited in said first circular groove (15).

10. according to any described swivel coupling in the claim 2 to 9; It is characterized in that; This swivel coupling also comprises the seal ring (50) that is arranged between said core body (10) and the said housing (20); Be formed with a plurality of second circular grooves (18) between said core body (10) and the said housing (20); This second circular groove (18) is through being arranged on the external communications of third channel (21) and the first passage (11) in the said core body (10) and said swivel coupling on the said housing (20), and the both sides of each said second circular groove (18) are provided with said seal ring (50).

11. swivel coupling according to claim 10; It is characterized in that; This swivel coupling comprises cover piece (70), and this cover piece (70) is arranged in the said first passage (11), with the closure of openings of the said first passage (11) on the end face that will be exposed to said core body (10).