CN201218375Y

CN201218375Y - High-pressure rotating connector

Info

Publication number: CN201218375Y
Application number: CNU200820050888XU
Authority: CN
Inventors: 徐科
Original assignee: FOSHAN ACL LIFENG MACHINE TOOL Co Ltd
Current assignee: SHANDONG ACL NEW MATERIALS CO., LTD.
Priority date: 2008-07-18
Filing date: 2008-07-18
Publication date: 2009-04-08
Anticipated expiration: 2018-07-18

Abstract

The utility model discloses a high pressure rotating joint comprising a housing and an oil distribution shaft. The housing is provided with an oil feed hole; the oil distribution shaft comprises an oil return segment, a flange provided with an oil feed outlet, and a central spindle interiorly provided with a first oil way and a second oil way, wherein the central spindle extends into the housing; the central spindle and the housing are in sealing fitting through a sealing element; at least one bearing is arranged between the central spindle and the housing; the first oil way is communicated with the oil feed hole on the housing and the oil feed outlet on the flange; the second oil way axially passes through the whole oil distribution shaft; and the bearing is arranged at the middle part of the central spindle. The rotating joint has the advantages of little concentricity error, and reduced additional force of the central spindle rotation, thus, the wear between the bearing and parts of the sealing element can be reduced, the mutual oil interference can be minimized so as to improve the product performance and prolong the service life.

Description

A kind of chicksan

Technical field

The utility model relates to a kind of joint, particularly a kind of chicksan.

Background technique

The modern industry field as long as exist the transmission of flowing medium between fixed block and/or revolving part, will use high pressure joint, especially rotatable high pressure joint.

Continuous development along with industrial technology, need on the more and more equipments to use this in rotation the joint of transferring high voltage fluid, such as special purpose machine tool, deep hole rig, the glass machine, equipment such as uncoiler on the thin plate bundle machine, in order to satisfy the needs of these equipment, various chicksans have appearred in the market, a kind of chicksan such as Fig. 1 are wherein arranged, shown in Figure 2, it comprises housing 1 and oil distributing shaft 2, have oil inlet hole 9 and spill port 10 on the housing 1, oil distributing shaft 2 comprises oil return section 3, flange 4 and the inner axle core 5 that has first oil circuit 6 and second oil circuit 7, axle core 5 stretches in the housing 1 and with housing 1 and is sealed and matched, between axle core 5 and the housing 1 bearing 8 is set, realize that by bearing 8 axle cores 5 cooperate with rotation between the housing 1, the chicksan of this structure is because it can realize the transmission of flowing medium in rotation, therefore generally adopted by people institute, but can there be following shortcoming and defect in this swivel joint in assembling and manufacture process: (1) is from Fig. 1, can find out among Fig. 2, the bearing 8 of this swivel joint is two, and be separately positioned on the two ends of a core 5, because the distance that these two bearings 8 are separated by on axle core 5 is far away, time marquis at processing axle core 5 and housing 1, there is deviation housing 1 and axle core 5 out-of-alignment problems will occur slightly, as mentioned above, axle core 5 and housing 1 are finished the flowing medium transmission under counterrotating state, like this coaxality between them is had higher requirement, if the coaxiality error between them overproof (coaxiality error is the decentraction that is reflected in the center of circle on the cross section), will inevitably cause a core 5 not smooth in rotation, finally make the excessive additional force of generation on the bearing 8, the wearing and tearing between each component such as bearing 8 and black box have been aggravated, make the sealing effect variation of oil circuit, cause flowing medium to leak, and coaxality is overproof also can to cause machine vibration, a series of harmful effects such as noise increase; (2) oil inlet hole 9 of this swivel joint and spill port 10 are all opened on housing, and the problem of bringing like this is, in case above-mentioned out-of-alignment phenomenon occurs, will cause the directly series connection mutually of oil inlet hole 9 and spill port 10, make the oil circuit confusion, do not reach the purpose of design; (3) complicated integral structure of this swivel joint, poor sealing performance, mechanical property is stable inadequately, and working life is short.

The model utility content

The purpose of this utility model is to overcome the shortcoming and defect of above-mentioned prior art, a kind of stable mechanical performance is provided, is convenient to the chicksan that assembles, make.

The purpose of this utility model realizes by following technical proposals: a kind of chicksan, comprise housing and oil distributing shaft, have oil inlet hole on the housing, oil distributing shaft comprises the oil return section, have the flange and the inner axle core that has first oil circuit and second oil circuit of oil-feed outlet, the axle core stretches in the housing, be sealed and matched by black box between axle core and the housing, be provided with at least one bearing between axle core and the housing, oil inlet hole on described first oil circuit and the housing and the outlet of the oil-feed on the flange are communicated with, described second oil circuit axially runs through whole oil distributing shaft, and described bearing is arranged on the middle part of a core;

Described housing is provided with the front cover that the side with bearing outer ring offsets, front cover is sealed and matched with the axle core, between the oil inlet hole on bearing and the housing, be provided with the gland that the opposite side with bearing outer ring offsets, described black box comprises first black box and second black box, first black box is to slot on gland, seal ring can be set in groove, and second black box is that each is slotted respectively in the both sides of the oil inlet hole of inner walls, and seal ring can be set in groove;

Also be provided with the bounding means that offsets with bearing inner race between described bearing and the gland;

Described bounding means comprises the card key and is arranged on the outer shaft block ring of card key;

Described housing also is provided with rear end cover, and the middle part of rear end cover has the spill port that is communicated with second oil circuit;

Can adopt between described rear end cover and the housing and be sealed and matched;

Described rear end cover can adopt screw to be connected with housing, is threaded but also can directly adopt;

Described front cover adopts with housing and is threaded, but also can adopt screw to be connected with housing.

This chicksan working procedure is: oil enters first oil circuit of an in-core earlier by the oil inlet hole on the housing, oil-feed from the flange outlet flows into and uses oil system again, then, flow into spill port on the rear end cover through second oil circuit again with the oil of oil system, flow into oil supply system at last, so repeatedly circulation.

The utility model has following advantage and effect with respect to prior art:

(1), overcome housing and axle core out-of-alignment phenomenon appear in swivel joint of the prior art easily in processing or assembly process generation because bearing is arranged on the middle part of a core;

(2) because the coaxiality error scope of this chicksan is little, the additional force when having reduced the rotation of axle core makes between a core and the housing and can rotate smoothly, has therefore reduced the wearing and tearing between each component such as bearing and black box;

(3) because oil-feed inlet of this swivel joint and oil return outlet branch are arranged, effectively reduced the phenomenon of mutual string oil between the oil circuit;

(4) compared with prior art, this chicksan simple in structure, stable mechanical performance, sealability is reliable, and is easy for installation, long service life.

Description of drawings

Fig. 1 is existing chicksan structural representation.

Fig. 2 is the assembly structure schematic representation of the chicksan among Fig. 1.

Fig. 3 is a chicksan structural representation of the present utility model.

Fig. 4 is a chicksan assembly structure schematic representation of the present utility model.

Embodiment

Below in conjunction with embodiment and accompanying drawing the utility model is described in further detail, but mode of execution of the present utility model is not limited thereto.

Embodiment

As Fig. 2, shown in Figure 3, chicksan of the present utility model, comprise housing 1 and oil distributing shaft 2, housing 1 has front cover 11 and rear end cover 19, have oil inlet hole 10 on the housing 1, oil distributing shaft 2 comprises oil return section 3, have the flange 5 and the inner axle core 6 that has first oil circuit 7 and second oil circuit 8 of oil-feed outlet 4, axle core 6 stretches in the housing 1, be sealed and matched by black box between axle core 6 and the housing 1, between the oil inlet hole 10 on bearing 9 and the housing 1, gland 12 is set, described black box comprises first black box and second black box, first black box can slot 13 on gland 12, seal ring 14 is set in groove 13, second black box can each slots 15 respectively in the both sides of the oil inlet hole 10 of housing 1 inwall, seal ring 16 is set in groove 15, be rotationally connected by bearing 9 between axle core 6 and the housing 1, in manufacturing and assembly process, has higher coaxality in order to make between housing 1 and the axle core 6, bearing 9 can be arranged on the middle part of a core 6, the quantity of bearing 9 can according to circumstances be provided with, can adopt one, also can adopt two or three to be set up in parallel, oil inlet hole 10 on described first oil circuit 7 and the housing 1 and the outlet of the oil-feed on the flange 54 are communicated with, described second oil circuit 8 axially runs through whole oil distributing shaft 2, the spill port 20 of this second oil circuit 8 can be opened in rear end cover 19, unlike prior art, oil inlet hole 10 and spill port 20 all are arranged on the housing 1, in case the seal ring between them loses sealing effect, adding the too high string oil mutually that will directly cause between first oil circuit 7 and second oil circuit 8 of oil pressure, so the utility model causes oil inlet hole 10 and spill port being arranged in 20 minutes, mainly is in order to overcome this shortcoming;

Described front cover 11 offsets with a side of bearing 9 outer rings, front cover 11 is sealed and matched with axle core 6, can realize by seal ring is set, described gland 12 is arranged between the oil inlet hole 10 on bearing 9 and the housing 1, this gland 12 offsets with the opposite side of bearing 9 outer rings, bearing 9 is limited between front cover 11 and the gland 12 like this, both prevented that bearing 9 from axially moving around, made things convenient for the dismounting of swivel joint again, make things convenient for regular maintenance, in addition, more firm on axle core 6 in order to make bearing 9, can the bounding means that offset with bearing 9 inner rings be set between bearing 9 and gland 12 again, this bounding means can adopt card key 17 and the axle-steel silk back-up ring 18 that is arranged on outside the card key 17;

In order to prevent that other impurity from entering in the housing 1, also can adopt between described rear end cover 19 and the housing 1 to be sealed and matched, can realize that for the ease of dismounting, described rear end cover 19 adopts screw or screw thread to be connected with housing 1 by seal ring;

For easy accessibility, described front cover 11 also can adopt screw with housing 1 or be threaded;

In addition, above-mentioned seal ring all can adopt rubber seal such as common rectangle, " zero " shape or " Y " shape, but also can adopt special Kang Xuanzhuan lattice to enclose, these lattice enclose by a wear-resisting rectangular ring and " zero " shape rubber seal to be formed, " zero " shape rubber seal provides pretightening force, can have the two way sealed effect to the wearing and tearing redeeming of rectangular ring;

This chicksan working procedure is: oil earlier enters first oil circuit 7 in the core 6 by the oil inlet hole on the housing 1 10, oil-feed from the flange 5 outlet 4 flows into and uses oil systems again, then, the spill port 20 that flows on the rear end covers 19 through second oil circuit 8 again with the oil of oil system, flow into oil supply system at last, so repeatedly circulation.

Chicksan of the present utility model is not only applicable to the transmission of liquid, also is applicable to the transmission of flowing mediums such as gas.

The foregoing description is the utility model preferred implementation; but mode of execution of the present utility model is not restricted to the described embodiments; other any technological scheme is not deviating from the change done under spirit of the present utility model and the principle, modification, is substituting, combination, simplifying; all should be the substitute mode of equivalence, be included within the protection domain of the present utility model.

Claims

1, a kind of chicksan, comprise housing and oil distributing shaft, have oil inlet hole on the housing, oil distributing shaft comprises the oil return section, has the flange and the inner axle core that has first oil circuit and second oil circuit of oil-feed outlet, the axle core stretches in the housing, be sealed and matched by black box between axle core and the housing, be provided with at least one bearing between axle core and the housing, oil inlet hole on described first oil circuit and the housing and the outlet of the oil-feed on the flange are communicated with, it is characterized in that: described second oil circuit axially runs through whole oil distributing shaft, and described bearing is arranged on the middle part of a core.

2, chicksan according to claim 1, it is characterized in that: described housing is provided with the front cover that the side with bearing outer ring offsets, front cover is sealed and matched with the axle core, between the oil inlet hole on bearing and the housing, be provided with the gland that the opposite side with bearing outer ring offsets, described black box comprises first black box and second black box, first black box is to slot on gland, seal ring is set in groove, second black box is that each is slotted respectively in the both sides of the oil inlet hole of inner walls, and seal ring is set in groove.

3, chicksan according to claim 1 and 2 is characterized in that: also be provided with the bounding means that offsets with bearing inner race between described bearing and the gland.

4, chicksan according to claim 3 is characterized in that: described bounding means comprises the card key and is arranged on the outer shaft block ring of card key.

5, chicksan according to claim 1 and 2 is characterized in that: described housing also is provided with rear end cover, and the middle part of rear end cover has the spill port that is communicated with second oil circuit.

6, chicksan according to claim 5 is characterized in that: be sealed and matched between described rear end cover and the housing.

7, chicksan according to claim 6 is characterized in that: described rear end cover adopts screw to be connected with housing.

8, chicksan according to claim 2 is characterized in that: described front cover adopts with housing and is threaded.