CN215377924U - Rotary joint - Google Patents

Abstract

The outer wall of the upper section of the rotary hanging shaft is rotatably connected with the inner wall of the fixed loop bar; the middle section of the rotary hanging shaft is provided with a communicating air passage hole transversely penetrating through the shaft body, two ends of the communicating air passage hole are communicated with the rotary vent hole of the fixed sleeve rod, and the middle part of the communicating air passage hole is also communicated with the bottom end of the rotary hanging shaft; the lower section of the rotary hanging shaft is connected with an electrified slip ring. The bearing is arranged on the supporting part, so that a larger axial load can be borne; the axial fixing nut can limit the bearing and keep the bearing stable; the anti-loosening pin shaft further locks the axial fixing nut. The air tightness of the sealing ring ensures that the gas is not leaked in the transmission process; the slip ring fixing shell and the slip ring rotating central shaft synchronously rotate, and the transmission of gas and electric signals can be realized simultaneously.

Description

Rotary joint

Technical Field

The utility model relates to the field of mechanical devices, in particular to a rotary joint which can realize infinite rotation, bear larger axial load and simultaneously transmit electricity and gas.

Background

Rotary joints are used when lifting mechanical parts for transmitting gas and electrical energy/signals/data etc. The existing rotary joint comprises a static fixed loop bar and a rotatable rotary hanging shaft, wherein a middle hole for ventilation is arranged in the rotary hanging shaft; and may transmit power/signals/data. However, the conventional rotary joint has the problems of unstable rotation and insufficient air tightness during rotation of the middle hole, cannot bear large axial load, and is not beneficial to use.

Disclosure of Invention

The utility model aims to solve the existing problems and provides a rotary joint.

In order to achieve the purpose, the technical scheme adopted by the utility model comprises a fixed loop bar and a rotary hanging shaft, wherein the rotary hanging shaft is arranged in an inner cavity of the fixed loop bar and can rotate relatively to transmit electric energy/signals/data, and the outer wall of the upper section of the rotary hanging shaft is rotatably connected with the inner wall of the fixed loop bar; the middle section of the rotary hanging shaft is provided with a communicating air passage hole transversely penetrating through the shaft body, two ends of the communicating air passage hole are communicated with the rotary vent hole of the fixed sleeve rod, and the middle part of the communicating air passage hole is also communicated with the bottom end of the rotary hanging shaft; the lower section of the rotary hanging shaft is connected with an electrified slip ring.

The inner wall of the fixed loop bar is provided with a supporting part which extends inwards in the radial direction, the upper end face of the supporting part is provided with a plurality of bearings for rotation, and the bearings are located between the outer wall of the rotating hanging shaft and the inner wall of the fixed loop bar.

The bearing comprises a bearing body and is characterized by further comprising an axial fixing nut, wherein the inner thread of the axial fixing nut is screwed with the outer thread of the upper section of the rotary hanging shaft, and the lower end of the axial fixing nut is limited to the upper end face of the bearing to keep the bearing body stable.

The locking device comprises a fixed sleeve rod, a locking pin shaft, a locking nut and a locking sleeve rod, wherein the locking pin shaft is arranged on the side wall of the axial fixed nut; and the anti-loosening pin shaft penetrates through the clamping groove and the pin hole respectively to lock the axial fixing nut and the fixing loop bar.

The rotary hanging shaft is characterized in that a central hole is formed in the body of the rotary hanging shaft, the upper end of the central hole is communicated with the gas path communicating hole, and the lower end of the central hole is communicated with the bottom end of the rotary hanging shaft.

Wherein, the bottom of rotatory hanging axle is connected with down the gas connection, realizes putting through with external gas pipeline.

The rotary vent hole is connected with the upper air joint through the transverse air hole and communicated with an air source.

And the upper part and the lower part of the middle section of the rotary hanging shaft are respectively provided with a sealing ring.

Wherein, the outer wall of rotatory hanging axle is equipped with annular seal groove, the sealing washer is located in the seal groove.

The slip ring rotating central shaft is arranged on the outer wall of the lower section of the rotating hanging shaft and rotates along with the rotating hanging shaft; the slip ring fixing shell is fixed on the fixing part of the fixing loop bar; when the fixed loop bar and the rotary hanging shaft rotate relatively, the corresponding transmission of electric capacity/signals/data is completed.

The slip ring fixing shell is arranged on the slip ring rotating central shaft, and a plurality of parts such as electric brushes, conducting rings, insulating sleeves and the like are arranged between the slip ring fixing shell and the slip ring rotating central shaft, so that electric capacity/signals/data can be smoothly transmitted in the rotating process.

The upper end of the fixed loop bar is provided with a fixed loop, and the fixed loop bar is fixed by the fixed loop bar through bolts.

Wherein, the fixed loop bar is also provided with a plug mounting base; and a multi-core plug is arranged in the plug mounting base to realize the connection with an external electric signal.

Compared with the prior art, the bearing is arranged on the supporting part, so that the bearing can bear larger axial load and simultaneously realize full circumferential rotation; the axial fixing nut can limit the bearing and keep the bearing stable; the anti-loosening pin shaft further locks the axial fixing nut. The air tightness of the sealing ring ensures that the gas is not leaked in the transmission process; the slip ring fixing shell and the slip ring rotating central shaft synchronously rotate, and the transmission of gas and electric signals can be realized simultaneously.

Drawings

FIG. 1 is a schematic structural diagram of an embodiment of the present invention;

FIG. 2 is a cross-sectional view of an embodiment of the present invention;

referring to the attached drawings, the device comprises a fixed loop bar 1, a supporting part 1A, a rotary air vent 1B, a transverse air hole 1C, a mounting part 1D, a rotary hanging shaft 2, an external thread 2A, a gas passage hole 2B, a lower outer wall 2C section, a fixed housing 3, a fixed housing 4 of a sliding ring, a rotary central shaft 5 of the sliding ring, a rotary bearing 6, an axial fixing nut 7, a fixed sleeve 8, a lower sealing ring 9, an upper sealing ring 10, a multi-core plug 11, a plug mounting base 12, a locking pin shaft 13, an upper air joint 14 and a lower air joint 15.

Detailed Description

The utility model will now be further described with reference to the accompanying drawings.

Referring to fig. 1 and 2, fig. 1 and 2 show an embodiment of the present invention, which mainly includes a fixed loop bar, a rotating hanging shaft, a plurality of bearings, an axial fixing nut, a slip ring fixing housing, a slip ring rotating central shaft, and the like.

The embodiment is divided into an upper part, a middle part and a lower part; the inside of fixed loop bar is equipped with the cavity, and the lateral wall, the lower extreme of fixed loop bar establish to the opening. The rotary hanging shaft is arranged in the inner cavity of the fixed loop bar. The lower section of the shaft body of the rotary hanging shaft extends out of the lower section opening of the fixed loop bar.

The upper part of the embodiment comprises an inner cavity for fixing a loop bar, an upper section of a rotary hanging shaft, a plurality of bearings for rotation between the upper section of the rotary hanging shaft and the rotary hanging shaft, an axial fixing nut for locking, an anti-loose bolt and the like; mainly realizes axial bearing and infinite circumferential rotation.

Referring to fig. 2, specifically, the outer wall of the upper section of the rotary hanging shaft is rotatably connected with the inner wall of the fixed loop bar, that is, the inner wall of the fixed loop bar is provided with a supporting portion extending radially inwards, and the supporting portion is formed in a step shape; the upper end face of the supporting part is provided with a plurality of bearings, and the bearings are positioned between the outer wall of the rotary hanging shaft and the inner wall of the fixed loop bar, so that the rotary hanging shaft can rotate relative to the fixed loop bar around the axial direction of the rotary hanging shaft.

Preferably, the internal thread of the axial fixing nut is screwed with the external thread of the upper section of the rotary hanging shaft, and the lower annular surface of the axial fixing nut is pressed on the upper end surface of the bearing and limits the position of the bearing.

Further, still include locking round pin axle. The side wall of the axial fixing nut is provided with a through clamping groove, and the fixing loop bar is provided with a corresponding pin hole which penetrates through the bar body; the anti-loosening pin shaft transversely penetrates through the clamping groove, the pin hole and the clamping groove in sequence, and can lock the axial fixing nut and the fixing sleeve rod to prevent the axial fixing nut and the fixing sleeve rod from being disengaged.

Wherein, the middle part of this embodiment includes the rotatory air vent of fixed loop bar lower extreme, the middle section and the upper and lower sealing washer of rotatory hanging axle, mainly realizes that gas circulates to the inside of rotatory hanging axle from fixed loop bar inside in rotatory process.

Referring to fig. 2, specifically, the middle section of the rotary hanging shaft is provided with a communication air passage hole transversely penetrating through the shaft body, the two ends of the communication air passage hole are opened to be communicated with the rotary vent hole inside the fixed loop bar, and the middle part of the communication air passage hole is communicated with the bottom end of the rotary hanging shaft through the central hole.

The rotary vent hole is connected with an upper air joint from an opening on the side wall and communicated with an air source, and air flows into the communicated air passage hole from the transverse air hole; since the gas passage holes are formed through both ends of the shaft body of the rotary hanger shaft, gas can always flow into the rotary hanger shaft when the rotary hanger shaft rotates. Furthermore, a central hole is formed in the rod body of the rotary hanging shaft, the upper end of the central hole is communicated with the air passage hole and the transverse air hole, and the lower end of the central hole is communicated with the bottom end of the rotary hanging shaft. The gas flows into the bottom end of the rotary hanging shaft along the central hole, and the function of gas transmission is achieved.

In addition, the bottom end of the rotary hanging shaft is connected with a lower air connector, and the lower air connector can be communicated with an air pipeline of lower equipment.

The lower part of this embodiment includes the hypomere of rotatory hanging shaft, electric slip ring, and electric slip ring includes slip ring fixed shell, slip ring rotation center axle, mainly realizes transmission electric capacity/signal/data among the rotatory process.

Referring to fig. 2, specifically, the slip ring rotation central shaft is fixed to the outer wall of the lower section of the rotation hanger shaft and can rotate together with the rotation hanger shaft; the slip ring fixing shell is fixed on the mounting part of the fixing loop bar. And parts such as a multi-path electric brush, a conducting ring, an insulating sleeve and the like are arranged between the inner wall of the slip ring fixing shell and the outer wall of the slip ring rotating central shaft, so that the electric capacity/signal/data can be smoothly transmitted in the rotating process.

Preferably, referring to fig. 1, the upper end of the fixed loop bar is provided with a fixed sleeve, and the fixed sleeve fixes the fixed loop bar through a bolt to match with the hoisting operation.

Preferably, the plug mounting base and the multi-core plug are mounted and fixed on the side edge of the fixed loop bar, so that the connection with an external electric signal is realized.

Preferably, the fixed cover casing is further arranged outside the middle part and the lower part of the embodiment to play a role in protection.

The embodiments of the present invention have been described in conjunction with the accompanying drawings and examples, the structures of which are given by way of illustration and not limitation, and those skilled in the art can make modifications as required, and various changes and modifications can be made within the scope of the appended claims.

Claims (14)

1. The utility model provides a rotary joint, includes fixed loop bar and rotatory hanging shaft, rotatory hanging shaft locates in the fixed loop bar inner chamber to can do relative rotation in order to transmit electric energy/signal, its characterized in that: the outer wall of the upper section of the rotary hanging shaft is rotatably connected with the inner wall of the fixed loop bar;

the middle section of the rotary hanging shaft is provided with a communicating air passage hole transversely penetrating through the shaft body, two ends of the communicating air passage hole are communicated with the rotary vent hole of the fixed sleeve rod, and the middle part of the communicating air passage hole is also communicated with the bottom end of the rotary hanging shaft;

the lower section of the rotary hanging shaft is connected with an electrified slip ring.

2. The swivel joint of claim 1, wherein: the inner wall of fixed loop bar is equipped with the supporting part that radially extends inwards, and the up end of supporting part is equipped with a plurality of bearings, a plurality of bearings are located between the outer wall of rotatory hanging shaft and the inner wall of fixed loop bar.

3. The swivel joint of claim 2, wherein: the bearing is characterized by further comprising an axial fixing nut, wherein the inner thread of the axial fixing nut is screwed with the outer thread of the upper section of the rotary hanging shaft, and the lower end of the axial fixing nut is limited to the upper end face of the bearing.

4. A swivel joint according to claim 3, wherein: the locking device also comprises a locking pin shaft, wherein a clamping groove is arranged on the axial fixing nut, and a corresponding pin hole is arranged on the fixing loop bar; and the anti-loosening pin shaft penetrates through the clamping groove and the pin hole respectively to lock the axial fixing nut and the fixing loop bar.

5. The swivel joint of claim 1, wherein: a central hole is formed in the rod body of the rotary hanging shaft, the upper end of the central hole is communicated with the gas path hole, and the lower end of the central hole is communicated with the bottom end of the rotary hanging shaft.

6. The swivel joint of claim 5, wherein: the bottom end of the rotary hanging shaft is connected with a lower air joint.

7. The swivel joint of claim 1, wherein: the rotary vent hole is connected with the upper air joint through the transverse air hole and is communicated with an air source.

8. The swivel joint of claim 1, wherein: and the upper part and the lower part of the middle section of the rotary hanging shaft are respectively provided with a sealing ring.

9. The swivel joint of claim 8, wherein: the outer wall of rotatory hanging shaft is equipped with annular seal groove, the sealing washer is located in the seal groove.

10. The swivel joint of claim 1, wherein: the slip ring rotating central shaft is arranged on the outer wall of the lower section of the rotating hanging shaft and rotates along with the rotating hanging shaft; the slip ring fixing shell is fixed on the fixing loop bar.

11. The swivel joint of claim 10, wherein: a plurality of paths of electric brushes, conducting rings and insulating sleeves are arranged between the slip ring fixing shell and the slip ring rotating central shaft.

12. The swivel joint of claim 1, wherein: the upper end of the fixed loop bar is provided with a fixed loop, and the fixed loop bar is fixed by the fixed loop bar through bolts.

13. The swivel joint of claim 1, wherein: and the fixed loop bar is also provided with a plug mounting base.

14. The swivel joint of claim 13, wherein: and a multi-core plug is arranged in the plug mounting base.

Images