CN103162032A

CN103162032A - A rotation joint between two members capable of relatively moving around one axis

Info

Publication number: CN103162032A
Application number: CN2012105165868A
Authority: CN
Inventors: A·P·格赖纳; A·克雷勒; H·维勒
Original assignee: Heidelberger Druckmaschinen AG
Current assignee: Heidelberger Druckmaschinen AG
Priority date: 2011-12-08
Filing date: 2012-12-05
Publication date: 2013-06-19
Anticipated expiration: 2032-12-05
Also published as: CN103162032B; DE102012021818A1

Abstract

The invention relates to a rotation joint between two members capable of relatively moving around one axis. A task of the invention is to develop the rotation joint allowing a lot of unconnected liquid channel, the joint can be constructed in low cost, is provided with small flow loss, and large bridging length in an axial direction is allowed. In the rotation joint between two members capable of relatively moving around one axis, a second member is coaxially arranged inside an annular first member, and the rotation joint is provided with a fluid joint on the first member and a fluid channel on the second member; a corresponding fluid channel is connected with at least one fluid joint of the first member and is connected with at least a fluid joint of a fluid distributor head of the second member, and the fluid joints on the fluid distributor head are arranged in different flat sufaces.

Description

Two can be around being rotatably connected between the member of an axis relative movement

Technical field

The present invention relates to a kind of as described in the preamble in claim 1 two can be around being rotatably connected between the member of an axis relative movement.

Background technique

Disclosed a kind of for pressure medium is guided to the swivel coupling of the actuator of building machinery by the pressure medium assembly by DE 19618660A1.Described swivel coupling comprises that one is presented head, a cylindrical sector and a distributing head.Have axial bore and radial hole in described cylindrical sector, described axial bore and radial hole are intersected with each other.Have radially attachment hole and circular groove in presenting head and in distributing head, they are connected with hole in described cylindrical sector.Hole in described cylindrical sector consists of the flow resistance of can not ignore for pressure medium.Joint on distributing head is arranged on the outer circumferential face of distributing head, thereby makes pressure medium be directed to actuator from distributing head parallel plane, and described actuator is perpendicular to the axis of described cylindrical sector.Described joint is that assembling is friendly.Due to structure space, the quantity of the actuator that maybe need control of pressure medium is restricted.The length that is in the hole on axial direction in described cylindrical region intersegmental part is restricted, thereby makes this swivel coupling be limited in having in application on short swivel coupling length.

In the swivel coupling according to DE 4027623A1, pressure air joint rotor and stator interconnects by axial blind hole, radial hole and circular groove.Can produce the very important pressure loss when guiding air between axial bore and radial hole.Therefore, described axial blind hole can only be put into stator deeply, thereby makes the axial length of swivel coupling be restricted.Pneumatic fitting is on the rounded face of stator, thereby makes the quantity of possible joint be restricted.

According to DE 19903565A1, the multiple swivel coupling of hydraulic pressure between two members that can mutually reverse each other is made of the classification sleeve in a receiving hole that is in classification.The fluid passage of described member is passed into respectively in the pressure chamber that axially consists of in each grade.The fluid passage is parallel to spin axis and is in a member.In another member, described passage is acute angle with respect to spin axis.Axial sealer between these members does not allow high hydraulic pressure.Hydraulic joint on member is in respectively in a plane perpendicular to spin axis.Extending by the inclination of fluid passage makes this swivel coupling volume large.

Summary of the invention

Task of the present invention is, develop a kind of two can be around being rotatably connected between the member of an axis relative movement, it allows a large amount of unconnected fluid passages, can construct inexpensively, have little ventilation losses and allow bridge spreading degree on axial direction.

According to the present invention, a columniform second component is sat and is placed in first a tubular member.These members are constituent elements of more or less complicated construction package.Radial fluid joint on the first member is connected with fluid passage in second component inside respectively.Described fluid passage stops on a fluid-dispensing head.The joint that preferably is in different planes is set on fluid-dispensing head.

In order can to keep the described structural volume that is rotatably connected little and the hydraulic pipe line assembling can be fixed on fluid-dispensing head with open arms, the fluid coupling on distributing head be arranged on taper or spherical surface.

Described fluid passage consists of like this, makes them approach and has best flow liquid process.For this reason, all direction changes section of fluid passage all consists of on rounding ground.In second component, the section that is parallel to longitudinal axis of described fluid passage can be configured to prismatic.Advantageously, above-mentioned section utilizes the dish type cutting tool to produce by milling and/or grinding on manufacturing technology.The fluid passage section that produces on the side face of second component is advantageously covered with sleeve, described sleeve shrink fit or hot charging on described second component.Construct radius on the end of the fluid passage section that produces like this, be connected on described radius towards the direction of the first member and towards the direction of distributing head with the fluid passage section of inclined at acute angles with respect to the longitudinal axis of these two members.

In a flexible program of the present invention, the pipe of the second component inside of fluid passage section by being equipped with module consists of.Each module all has the circular groove of the described fluid of guiding, and described circular groove is connected with fluid coupling on the first member.A fluid passage section leads to from each circular groove the pipe that at least one leads to fluid-dispensing head.At least one in described pipe runs through two adjacent modules.Structure by modular type and the guiding of the fluid in pipe can be on the axial direction of these members the large length of bridge joint, and needn't need and the corresponding deep hole of the solution of prior art.

Description of drawings

The below sets forth the present invention by means of embodiment, and accompanying drawing represents:

Fig. 1 is the swivel coupling with vertical passage of milling;

Fig. 2 is the swivel coupling with tubular vertical passage.

Embodiment

Swivel coupling shown in Fig. 1 allows hydraulic oil 1 to guide to a plurality of actuators 3,4 by controlling assembly 2 under pressure.The control assembly 2 that this swivel coupling for example is used to will be arranged in excavator in superstructure is connected with actuator 3,4 in traveller.Swivel coupling in Fig. 1 comprises tubular member 5, and it is fixed on support 6.Described control assembly 2, an oil pump 7 and a fuel tank 8 are also sat and are placed in described support 6.

Pipeline

9,10 guides to

adapter piece

11,12 on member 5 from described control assembly 2.Described

adapter piece

11,12 is sat obliquely and is placed on the side face 13 of described member 5.Draw the circular groove 16,17 of a fluid passage 14,15 to the inboard of described member 5 from each adapter piece 11,12.Described fluid passage 14,15 and described circular groove 16,17 tilt with the longitudinal axis 18 of angle [alpha] with respect to described member 5.

Member 21 can remain on described member 5 inside around described axis 18 rotatably by bearing 19,20.Utilize some

grooves

22,23 of disk milling cutter milling on the surface of this member 21.Shrink fit by a sleeve 24 forms oily passage.The first

oily channel section

25,26 is passed described sleeve 24 from described groove 16,17 obliquely with angle [alpha].Following respectively the

section

27,28 of rounding in

groove

22,23 outlet port in described

section

25,26 back.Following the

prismatic section

29,30 that is parallel to described axis 18 in described

section

27,28 back.Following respectively the

section

31,32 of rounding in described

groove

22,23 ingress in described

section

29,30 back.Connecting

straight section

33,34 on described

section

31,32, described straight section tilts and finishes at

adapter piece

35,36 places with respect to described axis 18 with angle beta.

The end structure that stretches out from member 5 of described member 21 is the distributing head 37 with conical

surface.Adapter piece

35,36 and surface other, that

adapter piece

38,39 that be used for other oily passage is in described distributing head 37.Thus, these

adapter pieces

35,36,38,39 are in different planes, divergently tell in different directions in other words.Has seal arrangement 42 respectively between two circular grooves 16,17 and at the first groove 40 and last groove 41 sides.

Described swivel coupling allows oil 1 is guided to actuator 3,4 with the little pressure loss.Fluid passage section 27-34 changes by the entrance and exit that tilts and the direction by rounding and for flow optimized.The arrange assembling of

adapter piece

35,36,38,39 on the conical surface of described distributing head 37 allows a plurality of inflow sections and outflow section with open arms.

If used already mentioned reference character in the explanation to the embodiment of Fig. 2 below, what they related to is the element with identical functions.

As the embodiment in Fig. 1, supporting coaxially a second component 21 in first a tubular member 5.

Bearing

19,20 allows these members 5,21 to relatively rotate around public axis 18 each other.According to the quantity that controls the oily passage between assembly 2 and actuator 3,4, nothing arranges some module 43-48 with relatively rotating on second component 21.Each module 43,46 all has an oily passage 49,50, and described oily passage tilts with respect to described axis 18 with angle [alpha].These passages 49,50 are connected the annular pass 16,17 on described member 5 inboards respectively with a pipe fitting 51,52.Described pipe fitting 51,52 stops on distributing head 37, and described distributing head is configured in being on outside end of described member 21.In distributing head 37, the pipe fitting 51 of 18 guiding of paralleling to the axis, 52 extends by passage 53,54, and

link

35,36 is sat and is placed on the end of described passage.As described in for Fig. 1,

link

35,36,38,39 is sat and is placed on the conical surface of described distributing head 37, thereby makes the oil pressure pipeline tell towards actuator 3,4 on different directions.In the time of in

link

35,36,38,39 being screwed to the tapped hole that has angle beta with respect to described axis 18, described

link

35,36,38,39 is encountered on described passage 53,54 end.Described pipe fitting 51 runs through described module 43,44,45.Circular groove 16,17 seals with seal arrangement 42 in the side respectively.Described seal arrangement 42 act on respectively on member 5 inboards with the lip-deep sealing surface of module 43-48 on.

Modules 43-48 also can with more than a pipe fitting 51,52 couplings, thereby it is adaptive to carry out when needed power.

The reference character table

1 hydraulic oil

2 control assembly

3,4 actuators

5 members

6 supports

7 oil pumps

8 fuel tanks

9,10 pipelines

11,12 links

13 side faces

14,15 fluid passages

16,17 circular grooves

18 longitudinal axis

19,20 bearings

21 members

22,23 grooves

24 sleeves

25,26 oily channel section

The 27-34 section

35,36 links

37 distributing heads

38,39 links

40,41 grooves

42 seal arrangements

The 43-48 module

49,50 oily passages

51,52 pipe fittings

53,54 passages

Claims

two can be around being rotatably connected between the member of an axis relative movement, in this is rotatably connected, second component (21) is sat the inside that is placed in tubular the first member (5) coaxially, described being rotatably connected has fluid coupling (11 on the first member (5), 12) and have a fluid passage (25 on second component (21), 27, 28, 31, 33, 34, 49-54), wherein, each fluid passage (25, 27, 28, 31, 33, 34, 49-54) with at least one fluid coupling (11 of the first member (5), 12) connect and with second component (21) at least one fluid coupling (35 of fluid-dispensing head (37), 36, 38, 39) connect, it is characterized in that, fluid coupling (35 on described fluid-dispensing head (37), 36, 38, 39) be arranged in different planes.
2. being rotatably connected according to claim 1, is characterized in that, the fluid coupling on described fluid-dispensing head (35,36,38,39) is sat and is placed on a conical surface.
3. being rotatably connected according to claim 1, is characterized in that, described fluid passage is prismatic at least one section (28).
4. being rotatably connected according to claim 3, it is characterized in that, the described section (28) of described fluid passage utilizes the dish type cutting tool to produce on the surface of described second component (21) and passes through the inwall sealing of a sleeve (24), wherein, described sleeve (24) is fixedly connected with and is rotatably supported in described the first member (5) with described second component (21).
5. being rotatably connected according to claim 1, is characterized in that the fluid coupling (11 on described the first member (5), 12) and corresponding fluid passage (14,15,25,26) a section tilts with respect to the common axis (18) of described member (5,21).
6. being rotatably connected according to claim 1, is characterized in that, upper without arranging and the corresponding module of quantity (43-48) of fluid passage (51-54) at described second component (21) with relatively rotating; Each module (43-48) all comprises a fluid passage (49,50), and described fluid passage connects the fluid coupling (11,12) of described the first member (5) with at least one pipe (51,52) that leads to described fluid-dispensing head (37).
7. being rotatably connected according to claim 6, is characterized in that, at least one pipe (51) runs through two adjacent modules (43-45).
8. being rotatably connected according to claim 1, is characterized in that, described fluid passage has the direction change section of rounding in section (27,28,31,32).