CN213018267U - Central rotary joint with multi-channel structure - Google Patents
Central rotary joint with multi-channel structure Download PDFInfo
- Publication number
- CN213018267U CN213018267U CN202021738493.6U CN202021738493U CN213018267U CN 213018267 U CN213018267 U CN 213018267U CN 202021738493 U CN202021738493 U CN 202021738493U CN 213018267 U CN213018267 U CN 213018267U
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- China
- Prior art keywords
- fixed shell
- rotating shaft
- sealing ring
- fixed
- oil
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- 238000007789 sealing Methods 0.000 claims abstract description 73
- 239000011148 porous material Substances 0.000 claims description 4
- 230000008878 coupling Effects 0.000 claims description 3
- 238000010168 coupling process Methods 0.000 claims description 3
- 238000005859 coupling reaction Methods 0.000 claims description 3
- 239000003921 oil Substances 0.000 description 47
- 230000002035 prolonged effect Effects 0.000 description 5
- 238000005299 abrasion Methods 0.000 description 3
- 238000005096 rolling process Methods 0.000 description 3
- 239000010720 hydraulic oil Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
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Abstract
The utility model discloses a central rotary joint with a multi-channel structure, which comprises a fixed shell, a rotary shaft and a sealing component, wherein the rotary shaft is transversely and movably arranged in the fixed shell; one end of the rotating shaft extends out of the fixed shell; the top and the bottom of the fixed shell are respectively and vertically provided with a plurality of oil way interfaces; annular mounting grooves are formed in the inner wall of the fixed shell on two sides of the inner end of each oil way connector, and a sealing assembly is arranged in each mounting groove; a disc-shaped connecting seat is vertically arranged at the other end of the fixed shell; the utility model has simple structure, and solves the problems of larger friction force and shorter service life of the existing central swivel joint when rotating by adopting the ball bearing between the swivel shaft and the fixed shell; the problem that the sealing performance of the existing sealing ring on the rotating shaft is poor is solved through the sealing assembly.
Description
Technical Field
The utility model relates to a central authorities ' swivel joint's technical field especially relates to a central authorities ' swivel joint with multichannel structure.
Background
With the continuous development of engineering machinery, a rotary platform of the engineering machinery and the walking of a lower vehicle are connected and transited by adopting a central rotary joint, and a common central rotary joint consists of a rotary body, a rotary shaft, a sealing ring, a check ring and an end cover; the existing central swivel joint has the following problems in use: (1) sliding friction is formed between a fixed shell of the existing central rotary joint and a rotary shaft, the rotary speed of the mode is low, the friction force is large, so that the inner wall is seriously abraded, friction particles can be generated to pollute hydraulic oil after long-term use, and meanwhile, the eccentric center caused by abrasion can damage a sealing ring and a dust ring, so that oil leakage fault is caused; (2) the existing central rotary joint has poor sealing performance, so that a sealing ring is inconvenient to be tightly extruded on a shaft body of a rotary shaft, and the oil leakage condition is easy to occur; therefore, a solution to the above problem is required.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving the defect of poor practicability in the prior art and providing a central swivel joint with a multi-channel structure.
In order to achieve the above purpose, the utility model adopts the following technical scheme: a central rotary joint with a multi-channel structure comprises a fixed shell, a rotary shaft and a sealing assembly, wherein the fixed shell is in a cylindrical barrel shape and is horizontally arranged, bearing grooves are formed in two ends of the inner wall of the fixed shell, a ball bearing is vertically and fixedly connected into each bearing groove, the rotary shaft is transversely and movably arranged in the fixed shell, and two ends of the rotary shaft are fixedly connected into inner rings of the ball bearings; one end of the rotating shaft extends out of the fixed shell, and a connecting flange is coaxially and fixedly connected with one end of the rotating shaft; the top and the bottom of the fixed shell are respectively and vertically provided with a plurality of oil way interfaces, and the inner wall of each oil way interface is provided with an internal thread; annular mounting grooves are formed in the inner wall of the fixed shell on two sides of the inner end of each oil way connector, and a sealing assembly is arranged in each mounting groove; and a disc-shaped connecting seat is vertically arranged at the other end of the fixed shell.
Preferably, a plurality of first threaded holes are transversely formed in the edge of the outer side face of the connecting seat at equal intervals; a connecting bolt is arranged in each threaded hole, a plurality of threaded grooves are formed in the shell at the other end of the fixed shell in a matched mode, and the inner end of each connecting bolt is spirally connected into the threaded groove of the fixed shell; the middle of the outer side face of the connecting seat is transversely provided with a circular mounting hole, and an oil drainage pipe is transversely and fixedly connected in the mounting hole.
Preferably, an oil drainage hole is transversely formed in the middle of the inside of the rotating shaft, main oil holes are transversely formed in the shaft body of the rotating shaft around the oil drainage hole, the inner end of each main oil hole is communicated with each oil path connector, and an elastic snap spring is fixedly arranged on the shaft body of one end, close to the connecting seat, of the rotating shaft.
Preferably, the sealing assembly comprises a fixed sealing ring, an elastic sealing ring, a connecting convex ring and a connecting groove, a round fixed sealing ring is clamped in each mounting groove, a round elastic sealing ring is arranged on the inner ring wall of each fixed sealing ring, and the inner ring wall of each elastic sealing ring is pressed against the surface of the rotating shaft; every the equal vertical arch in both sides of elastic sealing ring lateral surface has the connection bulge loop, every all cooperate on the inner circle wall of fixed seal ring to connect the bulge loop and seted up connecting grooves, and every elastic sealing ring all establishes in fixed seal ring's connecting grooves through connecting the equal card of bulge loop.
Preferably, the middle part of the connecting flange is matched with the oil drainage hole to be provided with a circular oil drainage port, and the connecting flanges around the oil drainage port are matched with the main oil hole to be equidistantly provided with a plurality of main oil ports.
Preferably, the vertical rigid coupling of fixed casing's other end surface equidistance has a plurality of curved locating plates, every the second screw hole has all transversely been seted up at the plate body middle part of locating plate one side, every equal screwed connection of second screw hole has fixing bolt.
Compared with the prior art, the beneficial effects of the utility model are that: in the utility model, the water-saving device is provided with a water-saving valve,
1. the friction between the rotating shaft and the fixed shell is replaced by sliding friction through the rolling friction of the ball bearing, so that the friction between the rotating shaft and the inner wall of the fixed shell is conveniently and effectively reduced, the rotating efficiency of the rotating shaft is conveniently improved, the service life of a central rotating joint is conveniently prolonged, the installation coaxiality is conveniently ensured, and the sealing assembly is prevented from being damaged due to eccentricity; the abrasion of the sealing component is reduced, and the service life of the central rotary joint is further prolonged; the problems that the friction force is large and the service life is short when the existing central rotary joint rotates are solved;
2. elastic sealing rings in the sealing assembly are clamped in the connecting grooves of the fixed sealing ring through connecting convex rings; the sealing performance of the sealing assembly is effectively improved; the sealing assembly is convenient to prevent oil leakage caused by the fact that the sealing ring cannot be tightly pressed, and the problem that the sealing performance of the existing sealing ring on the rotating shaft is poor is solved.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without limitation. In the drawings:
fig. 1 is a schematic view of the overall structure of the main view of the present invention;
fig. 2 is a schematic view of a front view cross-sectional structure provided by the present invention;
fig. 3 is a schematic view of the present invention;
fig. 4 is an enlarged schematic view of a portion a in fig. 2 according to the present invention;
number in the figure: the oil-gas separation device comprises a fixed shell 1, a ball bearing 2, a rotary shaft 3, a connecting flange 4, a main oil way interface 5, a connecting seat 6, a connecting bolt 7, an oil drain pipe 8, an oil drain hole passage 9, a main oil hole passage 10, a fixed sealing ring 11, an elastic sealing ring 12, a connecting convex ring 13, a connecting groove 14, an oil drain through hole 15, a main oil through hole 16, a positioning plate 17, a fixing bolt 18 and an elastic clamp spring 19.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.
Example 1: referring to fig. 1-4, a central swivel joint with a multi-channel structure in the present invention includes a fixed housing 1, a swivel shaft 3 and a sealing assembly, wherein the fixed housing 1 is a horizontally arranged cylindrical tube, bearing grooves are respectively formed at two ends of an inner wall of the fixed housing 1, a ball bearing 2 is vertically fixedly connected in each of the bearing grooves, the swivel shaft 3 is transversely movably arranged in the fixed housing 1, and two ends of the swivel shaft 3 are fixedly connected in an inner ring of the ball bearing 2; sliding friction is replaced by rolling friction of the ball bearing 2 between the rotating shaft 3 and the fixed shell 1, so that the friction between the rotating shaft 3 and the inner wall of the fixed shell 1 is effectively reduced, the rotating efficiency of the rotating shaft 3 is improved, and the service life of a central rotating joint is prolonged; one end of the rotating shaft 3 extends out of the fixed shell 1, and a connecting flange 4 is coaxially and fixedly connected with one end of the rotating shaft 3; a plurality of oil way interfaces 5 are vertically arranged at the top and the bottom of the fixed shell 1 respectively, and an internal thread is arranged on the inner wall of each oil way interface 5; annular mounting grooves are formed in the inner wall of the fixed shell 1 on two sides of the inner end of each oil way connector 5, and a sealing assembly is arranged in each mounting groove; and a disc-shaped connecting seat 6 is vertically arranged at the other end of the fixed shell 1.
In the utility model, a plurality of first threaded holes are transversely arranged at the edge of the outer side surface of the connecting seat 6 at equal intervals; a connecting bolt 7 is arranged in each threaded hole, a plurality of threaded grooves are formed in the shell at the other end of the fixed shell 1 in a matched mode, and the inner end of each connecting bolt 7 is spirally connected into the threaded groove of the fixed shell 1; a circular mounting hole is transversely formed in the middle of the outer side face of the connecting seat 6, and an oil drainage pipe 8 is transversely and fixedly connected in the mounting hole; the vertical rigid coupling of other end surface equidistance of fixed casing 1 has a plurality of curved locating plates 17, every the plate body middle part of locating plate 17 one side all transversely has seted up the second screw hole, every equal screwed connection of second screw hole has fixing bolt 18.
In the utility model, an oil drainage hole 9 is transversely arranged in the middle of the revolving shaft 3, main oil holes 10 are transversely arranged in the shaft body of the revolving shaft 3 around the oil drainage hole 9, the inner end of each main oil hole 10 is respectively communicated with each oil circuit interface 5, and an elastic snap spring 19 is fixedly arranged on the shaft body of the revolving shaft 3 near one end of the connecting seat 6; the middle part of the connecting flange 4 is matched with an oil drainage hole 9 to be provided with a circular oil drainage port 15, and the connecting flanges 4 around the oil drainage port 15 are matched with main oil holes 10 to be provided with a plurality of main oil ports 16 at equal intervals; through a plurality of main oil pore canals 10 and main oil circuit interfaces 5, the requirement of complex control of large-scale machinery is met conveniently.
In the utility model, the sealing assembly comprises a fixed sealing ring 11, an elastic sealing ring 12, a connecting convex ring 13 and a connecting groove 14, a round fixed sealing ring 11 is clamped in each mounting groove, a round elastic sealing ring 12 is arranged on the inner ring wall of each fixed sealing ring 11, and the inner ring wall of each elastic sealing ring 12 is pressed against the surface of the revolving shaft 3; connecting convex rings 13 are vertically protruded on two sides of the outer side surface of each elastic sealing ring 12, a connecting groove 14 is formed in the inner ring wall of each fixed sealing ring 11 in a matched mode with the connecting convex ring 13, and each elastic sealing ring 12 is clamped in the connecting groove 14 of the fixed sealing ring 11 through the connecting convex ring 13; elastic sealing rings 12 in the sealing assembly are clamped in connecting grooves 14 of the fixed sealing ring 11 through connecting convex rings 13; the sealing performance of the sealing assembly is effectively improved; the sealing assembly is convenient to prevent the oil leakage caused by the fact that the sealing ring cannot be tightly pressed.
Example 2: when the utility model is used, firstly, the fixed shell 1 is installed and fixed through the fixing bolt 18 on the positioning plate 17; then, fixedly communicating and arranging each main oil way interface 5 with an external control valve; then, limiting and fixing a connecting flange 4 at one end of the rotating shaft 3; then the oil drain pipe 8 is connected with an external oil return box; when the rotating shaft 3 rotates, sliding friction is replaced by rolling friction of the ball bearing 2 between the rotating shaft 3 and the fixed shell 1, so that the friction force between the rotating shaft 3 and the inner wall of the fixed shell 1 is effectively reduced, the rotating efficiency of the rotating shaft 3 is improved, the service life of a central rotating joint is prolonged, hydraulic oil pollution is reduced, the installation coaxiality is ensured, and the situation that oil leakage is caused due to damage of a sealing assembly caused by eccentricity is prevented; the abrasion of the sealing component is reduced, and the service life of the central rotary joint is further prolonged; the problems that the friction force is large and the service life is short when the existing central rotary joint rotates are solved;
then, the requirement of complex control of large machinery is met conveniently through a plurality of main oil pore channels 10 and main oil way interfaces 5; then, the elastic sealing rings 12 in the sealing assembly are clamped in the connecting grooves 14 of the fixed sealing ring 11 through the connecting convex rings 13; the sealing performance of the sealing assembly is effectively improved; through seal assembly be convenient for prevent to take place because of the unable condition that compresses tightly and cause the scurring oil of sealing washer, solved the not good problem of leakproofness of current sealing washer to revolving axle 3.
The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.
Claims (6)
1. A central swivel joint with a multi-channel structure comprising a stationary housing (1), a swivel shaft (3) and a sealing assembly, characterized in that: the fixed shell (1) is in a cylindrical barrel shape which is horizontally arranged, bearing grooves are formed in two ends of the inner wall of the fixed shell (1), a ball bearing (2) is vertically and fixedly connected into each bearing groove, the rotating shaft (3) is transversely and movably arranged in the fixed shell (1), and two ends of the rotating shaft (3) are fixedly connected into inner rings of the ball bearings (2); one end of the rotating shaft (3) extends out of the fixed shell (1), and a connecting flange (4) is coaxially and fixedly connected with one end of the rotating shaft (3); the top and the bottom of the fixed shell (1) are respectively and vertically provided with a plurality of oil way connectors (5), and the inner wall of each oil way connector (5) is provided with an internal thread; annular mounting grooves are formed in the inner wall of the fixed shell (1) on two sides of the inner end of each oil way connector (5), and a sealing assembly is arranged in each mounting groove; and a disc-shaped connecting seat (6) is vertically arranged at the other end of the fixed shell (1).
2. A central swivel joint having a multi-channel structure according to claim 1, wherein: a plurality of first threaded holes are transversely formed in the edge of the outer side face of the connecting seat (6) at equal intervals; a connecting bolt (7) is arranged in each threaded hole, a plurality of threaded grooves are formed in the shell at the other end of the fixed shell (1) in a matched mode, and the inner end of each connecting bolt (7) is spirally connected into the threaded groove of the fixed shell (1); the middle part of the outer side surface of the connecting seat (6) is transversely provided with a circular mounting hole, and an oil drainage pipe (8) is transversely and fixedly connected in the mounting hole.
3. A central swivel joint having a multi-channel structure according to claim 1, wherein: an oil drainage hole (9) is transversely formed in the middle of the inside of the rotating shaft (3), main oil holes (10) are transversely formed in the shaft body of the rotating shaft (3) around the oil drainage hole (9), the inner end of each main oil hole (10) is communicated with each oil way connector (5), and an elastic clamp spring (19) is fixedly arranged on the shaft body of one end, close to the connecting seat (6), of the rotating shaft (3).
4. A central swivel joint having a multi-channel structure according to claim 1, wherein: the sealing assembly comprises a fixed sealing ring (11), an elastic sealing ring (12), a connecting convex ring (13) and a connecting groove (14), wherein a round fixed sealing ring (11) is clamped in each mounting groove, a round elastic sealing ring (12) is arranged on the inner ring wall of each fixed sealing ring (11), and the inner ring wall of each elastic sealing ring (12) is pressed against the surface of the rotating shaft (3); every the equal vertical arch in both sides of elastic sealing ring (12) lateral surface has connection bulge loop (13), every all cooperate on the inner circle wall of fixed seal ring (11) to connect bulge loop (13) and seted up connecting grooves (14), and every elastic sealing ring (12) all are established in connecting grooves (14) of fixed seal ring (11) through connecting bulge loop (13) equal card.
5. A central swivel joint having a multi-channel structure according to claim 3, wherein: circular shape draining opening (15) have been seted up in the middle part cooperation draining pore (9) of flange (4) all cooperate main oil pore (10) equidistance on draining opening (15) flange (4) all around and seted up a plurality of main oil openings (16).
6. A central swivel joint having a multi-channel structure according to claim 1, wherein: the vertical rigid coupling of other end surface equidistance of fixed casing (1) has a plurality of curved locating plates (17), every the second screw hole has all transversely been seted up at the plate body middle part of locating plate (17) one side, every equal threaded connection has fixing bolt (18) in the second screw hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021738493.6U CN213018267U (en) | 2020-08-19 | 2020-08-19 | Central rotary joint with multi-channel structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021738493.6U CN213018267U (en) | 2020-08-19 | 2020-08-19 | Central rotary joint with multi-channel structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213018267U true CN213018267U (en) | 2021-04-20 |
Family
ID=75467407
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021738493.6U Expired - Fee Related CN213018267U (en) | 2020-08-19 | 2020-08-19 | Central rotary joint with multi-channel structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213018267U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114562681A (en) * | 2022-01-25 | 2022-05-31 | 浙江大学 | High-pressure liquid conveying system of arm type centrifugal machine in high centrifugal force environment |
-
2020
- 2020-08-19 CN CN202021738493.6U patent/CN213018267U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114562681A (en) * | 2022-01-25 | 2022-05-31 | 浙江大学 | High-pressure liquid conveying system of arm type centrifugal machine in high centrifugal force environment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210420 |
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| CF01 | Termination of patent right due to non-payment of annual fee |