CN202203565U

CN202203565U - Central rotary joint

Info

Publication number: CN202203565U
Application number: CN201120298483XU
Authority: CN
Inventors: 钟德祥
Original assignee: SHANDONG DORSON HYDRAULIC CO Ltd
Current assignee: SHANDONG DORSON HYDRAULIC CO Ltd
Priority date: 2011-08-17
Filing date: 2011-08-17
Publication date: 2012-04-25
Anticipated expiration: 2021-08-17

Abstract

The utility model discloses a central rotary joint, which includes a stator and a rotor sleeved on the stator, wherein an axial oil circuit and a radial oil circuit connected with the axial oil circuit are formed on the stator, a matched radial oil circuit is formed on the rotor, the corresponding radial oil circuits on the stator and the rotor are communicated through an annular oil circuit, and the radial oil circuit body is an annular oil groove formed on the surface of the stator; correspondingly, a shaft shoulder is arranged at one end of the matched part of the stator and the rotor, while the other end is an assembly end and assembled with an axial limiting part of the rotor. The central rotary joint is easy to machine.

Description

Central authorities' swivel coupling

Technical field

The utility model relates to a kind of central swivel coupling, and the oil circuit that is mainly used in when the part loop of hydraulic system relatively rotates with oil hydraulic pump or oil circuit itself is connected, and avoids the winding of oil pipe.

Background technique

In hydraulic system; Inevitably can run into some revolving mebers, revolving meber is connected with the central swivel coupling of the common employing between the fixed block, but the oil pipe on the fixed block after all just facing one direction; The oil circuit that wants on the interior movable part of 360 deg scope can both keep with the oil circuit on the fixed block being communicated with; Usually need on movable part, process a circumferential oil circuit, be actually the oil groove of opening an annular at the internal surface of movable part, cooperate with fixed block then to form oil circuit.As previously mentioned, for the ease of assembling, usually said axial oil circuit is opened usually on movable part, movable part be sleeved on usually fixing between on, just said oil circuit need be processed at the inwall of movable part, the difficulty of processing is relatively large.

Summary of the invention

Therefore, the utility model provides a kind of difficulty of processing little central swivel coupling to the defective of present central swivel coupling difficulty of processing.

The technological scheme that the utility model adopts is:

The utility model central authorities swivel coupling; Comprise stator and be sleeved on the rotor on this stator, wherein have axial oil circuit and the radially oil circuit that is connected this axial oil circuit on the stator, and on rotor, have the radially oil circuit that is complementary; To be communicated with on the corresponding stator radially oil circuit and epitrochanterian radially oil circuit through annular oil circuit; The main body of said radially oil circuit is the annular oil groove that is formed on stator surface, and correspondingly, an end of stator and rotor mating part is provided with the shaft shoulder; The other end is furnished with the axial limiting parts to rotor for the assembling end.

According to said structure, this programme has adopted annular oil groove to be arranged on the structural type of stator surface, and this structure is convenient to processing because of being positioned at workpiece surface.Simultaneously, correspondingly, for the ease of assembling; Changed the cooperating structure of stator and rotor; Adopt the shaft shoulder to form first limited part, be convenient to assembling like this, simultaneously; Cooperating an end face limited part just can form good assembly structure, also be convenient to the structure of processing thereby realized not only being convenient to assemble.

Above-mentioned central swivel coupling, said axial limiting parts are one through being bolted to the baffle plate on the said stator.

Above-mentioned central swivel coupling at said shaft shoulder end, is provided with a dust ring between the rotor end-face and the shaft shoulder.

Above-mentioned central swivel coupling, the oil circuit that connects when needs have when a plurality of, are provided with primary seal between the corresponding annular oil groove at least, and are provided with two-stage at outermost annular oil groove with the external world and seal.

Description of drawings

Fig. 1 is the structural representation according to a kind of central swivel coupling of the utility model.

Among the figure: 1, cover plate, 2, rotor, 3, O type circle, 4, rotating seal ring, 5, seal ring, 6, dust ring, 7, stator, 8, bolt, 9, elastic washer, 10, plug screw, 11, bolt, 12, baffle plate.

Embodiment

With reference to explanation accompanying drawing 1, it shows a kind of central swivel coupling, comprises stator 7 and is sleeved on the rotor 2 on this stator; Wherein have axial oil circuit and the radially oil circuit that is connected this axial oil circuit on the stator; And on rotor, have a radially oil circuit that is complementary, to be communicated with on the corresponding stator radially oil circuit and epitrochanterian radially oil circuit through annular oil circuit, the main body of said radially oil circuit is the annular oil groove that is formed on stator surface; Correspondingly; One end of stator and rotor mating part is provided with the shaft shoulder, and the other end is furnished with the axial limiting parts to rotor for the assembling end.

Said axial limiting parts are one to be fixed on the baffle plate 12 on the said stator through bolt 11, are convenient to dismounting and assembling.In the accompanying drawing 1, baffle plate is positioned at the hole that rotor forms, and seals with bolt 8 through a cover plate 1.

In order to reduce the pollution of abrasive wear and outside material,, be provided with a dust ring 6 between the rotor end-face and the shaft shoulder at said shaft shoulder end.

Referring to Figure of description 1, exist 4 to connect oil circuits among the figure, the oil circuit that connects when needs has when a plurality of; At least be provided with primary seal between the corresponding annular oil groove; Like the rotating seal ring in the accompanying drawing 14, further, and be provided with the two-stage sealing in outermost annular oil groove and the external world; In the accompanying drawing 1, added a seal ring 5 outside more.

Claims

1. central swivel coupling; Comprise stator (7) and be sleeved on the rotor (2) on this stator, wherein have axial oil circuit and the radially oil circuit that is connected this axial oil circuit on the stator, and on rotor, have the radially oil circuit that is complementary; To be communicated with on the corresponding stator radially oil circuit and epitrochanterian radially oil circuit through annular oil circuit; It is characterized in that: the main body of said radially oil circuit is the annular oil groove that is formed on stator surface, and correspondingly, an end of stator and rotor mating part is provided with the shaft shoulder; The other end is furnished with the axial limiting parts to rotor for the assembling end.

2. central swivel coupling according to claim 1 is characterized in that: said axial limiting parts are one to be fixed on the baffle plate (12) on the said stator through bolt (11).

3. central swivel coupling according to claim 1 is characterized in that: at said shaft shoulder end, be provided with a dust ring (6) between the rotor end-face and the shaft shoulder.

4. central swivel coupling according to claim 1 is characterized in that: the oil circuit that connects when needs has when a plurality of, is provided with primary seal between the corresponding annular oil groove at least, and is provided with two-stage at outermost annular oil groove with the external world and seals.