CN220623124U

CN220623124U - Rotary joint

Info

Publication number: CN220623124U
Application number: CN202322379064.4U
Authority: CN
Inventors: 徐立峰; 劳裕来
Original assignee: Ningbo Yamei Garden Tool Industry Co ltd
Current assignee: Ningbo Yamei Garden Tool Industry Co ltd
Priority date: 2023-09-01
Filing date: 2023-09-01
Publication date: 2024-03-19
Anticipated expiration: 2033-09-01

Abstract

The utility model discloses a rotary joint, which comprises a first pipe structure and a second pipe structure which are communicated, wherein a rotary gear component is arranged between opposite ends of the first pipe structure and the second pipe structure so as to be in sealing connection and can rotate around a central axis for movement, the rotary gear component comprises a plurality of gear grooves, gear pieces and an elastic structure which are arranged around the central axis, and the gear pieces are connected with the elastic structure; the opposite ends of the first pipe structure and the second pipe structure are movably connected with locking pieces corresponding to the central shaft pieces, and the locking pieces are used for positioning and locking the first pipe structure and the second pipe structure. The utility model realizes gear type rotary adjustment between the first pipe structure and the second pipe structure, and maintains the angle position between the first pipe structure and the second pipe structure after adjustment so as to avoid the position deviation of the first pipe structure and the second pipe structure when the fastener is positioned and locked.

Description

Rotary joint

Technical Field

The utility model relates to the technical field of pipe joints, in particular to a rotary joint.

Background

In hydraulic systems or pneumatic systems, pipelines are often used for transporting liquid or gaseous fluids, and various pipe joints are required for connection, branching, steering, etc. of the pipelines due to the influence of the pipeline laying environment. For example, the two ends of the pipe joint are respectively communicated with the water gun and the water pipe, and the two ends of the pipe joint are positioned on the same straight line or form a certain included angle for guiding the flow direction of fluid in the pipeline. In order to adapt to a complex terrain environment, two ends of an existing pipe joint can be movably adjusted, for example, an utility model patent with publication number of CN210920473U discloses a rotary pipe joint, which is composed of two parts, wherein the two parts are in a bent shape, a straight-through shape or a bent straight-through shape. The two parts of the pipe fitting joint are combined in a split mode and are connected in a staggered mode, the joint is provided with a crossed round surface, the crossed round surface is provided with convex-concave positioning steps, the two convex-concave crossed round surfaces are overlapped, the top of the two parts of the connecting structure is respectively provided with a perforation, bolts penetrate through the perforations to connect the two parts of the pipe fitting body together, the two parts of the pipe fitting body are positioned on the same plane by taking the bolts as axes, and the convex-concave steps can be rotated in a staggered mode and can be positioned.

When the two parts of the pipe fitting joint are adjusted in angle, the bolts are required to be unscrewed, and the bolts are screwed after the angle positions of the two parts of the pipe fitting joint are adjusted in place, however, when the bolts are screwed, the rotating bolts easily drive the angle positions of the two parts of the pipe fitting joint to deviate, so that the accuracy of the angle positions of the two parts of the pipe fitting joint is reduced.

Disclosure of Invention

The utility model aims to solve the defects of the technology, and designs the rotary joint which realizes gear type rotary adjustment between the first pipe structure and the second pipe structure, and maintains the angle position between the first pipe structure and the second pipe structure after adjustment so as to avoid the position deviation of the first pipe structure and the second pipe structure when the fastener is positioned and locked.

In order to solve the technical problems, the technical scheme of the utility model is as follows: the rotary joint comprises a first pipe structure and a second pipe structure which are communicated, a rotary gear component is arranged between opposite ends of the first pipe structure and the second pipe structure so as to be in sealing connection and can rotate around a central axis, the rotary gear component comprises a plurality of gear grooves, gear pieces and elastic structures, the gear grooves, the gear pieces and the elastic structures are arranged around the central axis, and the gear pieces are connected with the elastic structures so as to drive the gear pieces to be in interference fit with inner side walls of the corresponding gear grooves;

the opposite ends of the first pipe structure and the second pipe structure are movably connected with locking pieces corresponding to the central shaft piece, and the locking pieces are used for positioning and locking the first pipe structure and the second pipe structure.

Preferably, the first pipe structure comprises a first joint pipe and a first movable shell which are communicated, the second pipe structure comprises a second joint pipe and a second movable shell which are communicated, and the inner cavity of the first movable shell is communicated with the inner cavity of the second movable shell;

the rotary gear assembly further comprises a first rotary piece and a second rotary piece which are coaxially arranged with the central axis, the first rotary piece and the second rotary piece are respectively arranged on the inner cavity wall of the first movable shell and the inner cavity wall of the second movable shell, and opposite ends of the first rotary piece and the second rotary piece are rotationally connected.

Preferably, the end of the first rotating member includes a pin shaft portion, the end of the second rotating member includes a shaft sleeve portion, the shaft sleeve portion is in socket joint with the pin shaft portion, the inner wall of the shaft sleeve portion is arranged in the second movable shell in a penetrating manner, and the locking member is arranged at the end of the pin shaft portion sleeved in the shaft sleeve portion.

Preferably, the inner wall of the shaft sleeve part comprises a movable groove, a slot and a mounting groove which are coaxially arranged, the pin shaft part is in sleeve joint fit with the slot, the locking part is of a bolt structure, the head part of the locking part can be rotatably moved in the mounting groove, and the rod part of the locking part is in threaded connection with the pin shaft part.

Preferably, the inner diameter of the movable groove is larger than that of the slot, a first sealing ring is arranged in the movable groove, and the first sealing ring is in sleeve joint fit with the pin shaft part.

Preferably, the second movable cover is provided with a protective cover covering the mounting groove.

Preferably, the gear piece and the elastic structure are both arranged on the first movable shell, the first movable shell is provided with a travel groove for sliding connection of the gear piece, two ends of the elastic structure are respectively arranged on opposite sides of the gear piece and the travel groove, the end part of the travel groove, which is ejected by the gear piece, is provided with a tip part, each gear groove is arranged on the second movable shell, and the tip part is in contact with an inner groove wall of the corresponding gear groove.

Preferably, a guide ring is arranged at the opening of the inner cavity of the first movable shell, and a guide groove which is sleeved and matched with the guide ring is arranged at the opening of the inner cavity of the second movable shell.

Preferably, a second sealing ring is arranged in the guide groove, and the second sealing ring is in sleeve joint fit with the guide ring.

Preferably, the first joint tube is provided with a cannula, and the second joint tube is provided with a cannula.

Compared with the prior art, the utility model has the beneficial effects that:

according to the rotary joint, the end parts of the first pipe structure and the second pipe structure, which are opposite, are used for being connected with two pipelines respectively, when the rotary joint is used, the first pipe structure and the second pipe structure are locked or unlocked through the locking piece, opposite ends of the first pipe structure and the second pipe structure can be rotated around the central axis according to requirements, the gear piece is pressed to drive the elastic structure to shrink and deform so that the gear piece moves into the next gear groove, after the angle position between the first pipe structure and the second pipe structure is adjusted to be in place, the elastic force of the elastic structure recovery deformation drives the gear to be inserted into the corresponding gear groove and be in interference fit with the inner groove wall of the gear groove, so that gear type rotary adjustment between the first pipe structure and the second pipe structure is realized, the angle position between the first pipe structure and the second pipe structure is maintained after adjustment, the position deviation of the fastener is avoided when the first pipe structure and the second pipe structure are locked in a positioning mode, and the accuracy of the angle position of the two ends of the rotary joint is ensured.

Drawings

FIG. 1 is a schematic view of the structure of the rotary joint in the embodiment;

FIG. 2 is a cross-sectional view of the rotary joint in an embodiment;

FIG. 3 is a schematic structural view of a first pipe structure in the embodiment;

FIG. 4 is an exploded view of a first tube structure in an embodiment;

FIG. 5 is a schematic structural view of a second pipe structure in the embodiment;

fig. 6 is a cross-sectional view of a second tube structure in an embodiment.

In the figure: 1. a first tube structure; 11. a first joint pipe; 12. a first movable case; 2. a second tube structure; 21. a second joint pipe; 22. a second movable case; 3. a gear groove; 4. a gear member; 5. an elastic structure; 6. a first rotating member; 7. a second rotating member; 8. a locking member; 9. a pin shaft portion; 10. a sleeve portion; 13. a movable groove; 14. a slot; 15. a mounting groove; 16. a first seal ring; 17. a protective cover; 18. a travel groove; 19. a tip portion; 20. a guide ring; 23. a guide groove; 24. a second seal ring; 25. a cannula; 26. a sleeve.

Detailed Description

The utility model is further described below by way of examples with reference to the accompanying drawings.

Referring to fig. 1 to 6, a rotary joint comprises a first pipe structure 1 and a second pipe structure 2 which are communicated, wherein the first pipe structure 1 comprises a first joint pipe 11 and a first movable shell 12 which are communicated, the first joint pipe 11 is provided with a cannula 25, the cannula 25 is detachably connected with the first pipe joint in a threaded connection, plugging and the like, the cannula 25 is externally connected with a water pipe, the first movable shell 12 is a disc body, an inner cavity of the first movable shell 12 is communicated with the first joint pipe 11, the second pipe structure 2 comprises a second joint pipe 21 and a second movable shell 22 which are communicated, the second joint pipe 21 is provided with a sleeve 26, the sleeve 26 is detachably connected with the second pipe joint, the connection mode of the sleeve 26 can be in threaded connection, plugging and the like, the sleeve 26 can be plugged into an interface end of a water gun, the second movable shell 22 is a disc body, and the inner cavity of the second movable shell 22 is communicated with the second joint pipe 21. Preferably, cannula 25 and the sleeve are replaced with water connections to allow the swivel arrangement to communicate the two lines.

The first movable shell 12 and the second movable shell 22 are respectively formed at opposite ends of the first pipe structure 1 and the second pipe structure 2, a rotary gear component is arranged between the first movable shell 12 and the second movable shell, so that the first movable shell 12 and the second movable shell 22 are in tight connection and can rotate around a central axis, the opposite sides of the first movable shell 12 and the second movable shell 22 are in interference fit to realize that inner cavities of the first movable shell and the second movable shell are communicated to form a common cavity, and a fluid medium sequentially passes through the first joint pipe 11, the common cavity and the second joint pipe 21, or sequentially passes through the second joint pipe 21, the common cavity and the first joint pipe 11.

The rotary gear assembly comprises a plurality of gear grooves 3, gear pieces 4, an elastic structure 5, a first rotary piece 6 and a second rotary piece 7 which are arranged around a central axis, wherein the gear pieces 4 and the elastic structure 5 are arranged on a first movable shell 12, a travel groove 18 for sliding connection of the gear pieces 4 is formed in the first movable shell 12, the elastic structure 5 is a spring piece, two ends of the elastic structure 5 are respectively arranged on opposite sides of the gear pieces 4 and the travel groove 18, so that the gear pieces 4 have a trend force of being ejected out of the travel groove 18, a tip 19 is formed at the end part of the gear pieces 4, which ejects out of the travel groove 18, each gear groove 3 is arranged on a second movable shell 22, the gear pieces 4 can be made of plastic materials or metal materials, the elastic structure 5 drives the gear pieces 4 to be in interference fit with inner side walls of the corresponding gear grooves 3 under the action of the elastic structure 5, and the tip 19 is abutted against inner groove walls of the corresponding gear grooves 3.

The first rotating member 6 and the second rotating member 7 are respectively arranged on the inner cavity wall of the first movable shell 12 and the inner cavity wall of the second movable shell 22, the first rotating member 6 and the second rotating member 7 are both coaxially arranged with the central axis, the end part of the first rotating member 6 comprises a pin shaft part 9, the end part of the second rotating member 7 comprises a shaft sleeve part 10, and the shaft sleeve part 10 is in sleeve joint fit with the pin shaft part 9, so that opposite ends of the first rotating member 6 and the second rotating member 7 are rotationally connected, and the first movable shell 12 and the second movable shell 22 are guided to perform circumferential rotation around the central axis. The inner wall of the shaft sleeve part 10 is arranged on the second movable shell 22 in a penetrating way, the second movable shell 22 is movably connected with a locking piece 8 corresponding to the central axis, the locking piece 8 is of a bolt structure, and the locking piece 8 is connected with the end part of the pin shaft part 9 sleeved in the shaft sleeve part 10 in a threaded way and used for positioning and locking the first pipe structure 1 and the second pipe structure 2.

When the rotary joint is used, the locking piece 8 is used for locking or unlocking the first pipe structure 1 and the second pipe structure 2, the opposite ends of the first pipe structure 1 and the second pipe structure 2 can rotate around the central axis according to the requirement, under the guidance of the tip end portion 19, the gear piece 4 is pressed in the travel groove 18 to carry out retreating action so as to drive the elastic structure 5 to shrink and deform, the gear piece 4 is moved into the next gear groove 3, after the angle position between the first pipe structure 1 and the second pipe structure 2 is adjusted to be in place, the elastic force of the elastic structure 5 for restoring deformation drives the gear to be inserted into the corresponding gear groove 3, the gear rotary adjustment between the first pipe structure 1 and the second pipe structure 2 is realized, the angle position between the first pipe structure 1 and the second pipe structure 2 is maintained after adjustment, so that the position deviation of the fastener is avoided when the fastener is positioned and locked on the first pipe structure 1 and the second pipe structure 2, and the accuracy of the angle position of the two ends of the rotary joint is ensured.

The inner wall of the shaft sleeve part 10 comprises a movable groove 13, a slot 14 and a mounting groove 15 which are coaxially arranged, the pin shaft part 9 is in sleeve joint fit with the slot 14, the head part of the locking piece 8 can rotationally move in the mounting groove 15, the rod part of the locking piece 8 is in threaded connection with the pin shaft part 9, the inner diameter of the movable groove 13 is larger than that of the slot 14, a first sealing ring 16 is arranged in the movable groove 13, the first sealing ring 16 is in sleeve joint fit with the pin shaft part 9 and used for sealing a connecting gap between the movable groove 13 and the pin shaft, and fluid medium in a public cavity is prevented from leaking into the mounting groove 15. The second movable case 22 is covered with a protective cover 17 covering the installation groove 15 for sealing and protecting the installation groove 15.

The inner cavity opening of the first movable shell 12 is provided with a guide ring 20, the inner cavity opening of the second movable shell 22 is provided with a guide groove 23 which is sleeved and matched with the guide ring 20 and used for guiding the first movable shell 12 and the second movable shell 22 to be connected in a butt joint mode and guiding the first movable shell 12 and the second movable shell 22 to rotate and move in a matched mode by matching with the first connecting piece and the second connecting piece, the guide groove 23 is internally provided with a second sealing ring 24, the second sealing ring 24 is sleeved and matched with the guide ring 20, the second sealing ring 24 is used for sealing a connecting gap between the guide ring 20 and the guide groove 23, and fluid media in a public cavity are prevented from leaking to the opposite sides of the first movable shell 12 and the second movable shell 22.

Of course, the above is only a typical example of the utility model, and other embodiments of the utility model are also possible, and all technical solutions formed by equivalent substitution or equivalent transformation fall within the scope of the utility model claimed.

Claims

1. A rotary joint, characterized by: the gear assembly comprises a first pipe structure (1) and a second pipe structure (2) which are communicated, a rotary gear assembly is arranged between opposite ends of the first pipe structure (1) and the second pipe structure (2) so as to be connected in a sealing mode and can rotate around a central axis, the rotary gear assembly comprises a plurality of gear grooves (3) which are arranged around the central axis, a gear piece (4) and an elastic structure (5), and the gear piece (4) is connected with the elastic structure (5) so as to drive the gear piece (4) to be in interference fit with the inner side walls of the corresponding gear grooves (3);

the locking piece (8) is movably connected to the opposite ends of the first pipe structure (1) and the second pipe structure (2) corresponding to the central shaft, and the locking piece (8) is used for positioning and locking the first pipe structure (1) and the second pipe structure (2).

2. The rotary joint according to claim 1, characterized in that: the first pipe structure (1) comprises a first joint pipe (11) and a first movable shell (12) which are communicated, the second pipe structure (2) comprises a second joint pipe (21) and a second movable shell (22) which are communicated, and the inner cavity of the first movable shell (12) is communicated with the inner cavity of the second movable shell (22);

the rotary gear assembly further comprises a first rotary piece (6) and a second rotary piece (7) which are coaxially arranged with the central axis, the first rotary piece (6) and the second rotary piece (7) are respectively arranged on the inner cavity wall of the first movable shell (12) and the inner cavity wall of the second movable shell (22), and the opposite ends of the first rotary piece (6) and the second rotary piece (7) are rotationally connected.

3. The rotary joint according to claim 2, characterized in that: the end of the first rotating member (6) comprises a pin shaft portion (9), the end of the second rotating member (7) comprises a shaft sleeve portion (10), the shaft sleeve portion (10) is in sleeve joint fit with the pin shaft portion (9), the inner wall of the shaft sleeve portion (10) is communicated with the second movable shell (22), and the locking member (8) is arranged at the end of the pin shaft portion (9) sleeved with the shaft sleeve portion (10).

4. A swivel according to claim 3, characterized in that: the inner wall of the shaft sleeve part (10) comprises a movable groove (13), a slot (14) and a mounting groove (15) which are coaxially arranged, the pin shaft part (9) is in sleeve joint fit with the slot (14), the locking piece (8) is of a bolt structure, the head part of the locking piece (8) can be rotatably moved in the mounting groove (15), and the rod part of the locking piece (8) is in threaded connection with the pin shaft part (9).

5. The rotary joint according to claim 4, wherein: the inner diameter of the movable groove (13) is larger than that of the slot (14), a first sealing ring (16) is arranged in the movable groove (13), and the first sealing ring (16) is in sleeve joint fit with the pin shaft part (9).

6. The rotary joint according to claim 4, wherein: the second movable shell (22) is covered by a protective cover (17) covering the mounting groove (15).

7. The rotary joint according to claim 2, characterized in that: gear piece (4) and elastic structure (5) all set up in on first movable shell (12), supply is seted up to first movable shell (12) gear piece (4) slide travel groove (18) of connection, the both ends of elastic structure (5) set up respectively in gear piece (4) with the opposite side of travel groove (18), gear piece (4) are ejecting the tip of travel groove (18) is formed with tip portion (19), each gear recess (3) set up in on second movable shell (22), tip portion (19) are inconsistent with the inside groove wall of corresponding gear recess (3).

8. The rotary joint according to claim 2, characterized in that: the inner cavity opening of the first movable shell (12) is provided with a guide ring (20), and the inner cavity opening of the second movable shell (22) is provided with a guide groove (23) which is in sleeve joint fit with the guide ring (20).

9. The rotary joint according to claim 8, characterized in that: a second sealing ring (24) is arranged in the guide groove (23), and the second sealing ring (24) is in sleeve joint fit with the guide ring (20).

10. The rotary joint according to claim 2, characterized in that: the first joint pipe (11) is provided with a cannula (25), and the second joint pipe (21) is provided with a cannula (26).