CN109973734A - Mesohigh middling speed rotary joint - Google Patents
Mesohigh middling speed rotary joint Download PDFInfo
- Publication number
- CN109973734A CN109973734A CN201910359971.8A CN201910359971A CN109973734A CN 109973734 A CN109973734 A CN 109973734A CN 201910359971 A CN201910359971 A CN 201910359971A CN 109973734 A CN109973734 A CN 109973734A
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- annular
- mounting hole
- ring
- lock sleeve
- annular groove
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- 238000007789 sealing Methods 0.000 claims abstract description 85
- 238000009434 installation Methods 0.000 claims abstract description 24
- 125000004122 cyclic group Chemical group 0.000 claims description 15
- 230000013011 mating Effects 0.000 claims description 13
- 239000000314 lubricant Substances 0.000 claims description 4
- 238000000034 method Methods 0.000 abstract description 5
- 230000015572 biosynthetic process Effects 0.000 abstract description 2
- 238000005096 rolling process Methods 0.000 description 4
- 238000005461 lubrication Methods 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 239000010687 lubricating oil Substances 0.000 description 2
- 239000003921 oil Substances 0.000 description 2
- 238000012856 packing Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000007792 addition Methods 0.000 description 1
- 238000009837 dry grinding Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L27/00—Adjustable joints, Joints allowing movement
- F16L27/08—Adjustable joints, Joints allowing movement allowing adjustment or movement only about the axis of one pipe
- F16L27/0804—Adjustable joints, Joints allowing movement allowing adjustment or movement only about the axis of one pipe the fluid passing axially from one joint element to another
- F16L27/0808—Adjustable joints, Joints allowing movement allowing adjustment or movement only about the axis of one pipe the fluid passing axially from one joint element to another the joint elements extending coaxially for some distance from their point of separation
- F16L27/0824—Adjustable joints, Joints allowing movement allowing adjustment or movement only about the axis of one pipe the fluid passing axially from one joint element to another the joint elements extending coaxially for some distance from their point of separation with ball or roller bearings
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L27/00—Adjustable joints, Joints allowing movement
- F16L27/08—Adjustable joints, Joints allowing movement allowing adjustment or movement only about the axis of one pipe
- F16L27/0804—Adjustable joints, Joints allowing movement allowing adjustment or movement only about the axis of one pipe the fluid passing axially from one joint element to another
- F16L27/0837—Adjustable joints, Joints allowing movement allowing adjustment or movement only about the axis of one pipe the fluid passing axially from one joint element to another the joint elements being bends
- F16L27/0845—Adjustable joints, Joints allowing movement allowing adjustment or movement only about the axis of one pipe the fluid passing axially from one joint element to another the joint elements being bends forming an angle of 90 degrees
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Joints Allowing Movement (AREA)
Abstract
The present invention provides a kind of mesohigh middling speed rotary joints, belong to field of mechanical technique.It solves the problems, such as that existing chicksan volume is bigger than normal.It includes tubular connector and rotary body, the both ends of connector are respectively connecting pin and installation end, the end of installation end is equipped with mounting hole, the bottom wall of mounting hole is equipped with cavity, one end of rotary body passes through in mounting hole to cavity, sealing element is equipped between rotary body and cavity, the mouth thread of mounting hole is connected with lock sleeve, one end of lock sleeve is protruded into mounting hole, rotary body passes through lock sleeve, rotation position is equipped with annular protrusion on the outside of one end in mounting hole, ring raceway one is formed between annular protrusion and the bottom wall of mounting hole, several balls one are equipped in ring raceway one, annular protrusion and lock sleeve protrude into formation ring raceway two between the end face in mounting hole, several balls two are equipped in ring raceway two.It has the advantages that reduce volume while guaranteeing normal use performance.
Description
Technical field
The invention belongs to field of mechanical technique, it is related to a kind of rotary joint more particularly to a kind of rotation of mesohigh middling speed connects
Head.
Background technique
Rotary joint is that fluid media (medium) (oil, gas and water) is input to slewing from static duct or is moved reciprocatingly
Connection and sealing component in mechanism is to solve run, drip, leak, energy saving, protection environment, the sealing that improves working conditions
Device.The structure of rotary joint as application No. is a kind of chicksan disclosed in 201610641286.0, including shell,
Mounting base, left sealing ring, moving-coil, rotary shaft, hole retaining ring, bracket, right sealing ring, right rolling bearing, roll left dynamic bearing and quiet
Circle, shell horizontal direction right end are machined with stepped hole, and vertical direction is machined with cylindrical hole and two holes communicate, mounting base left side
Upper processing is fluted, and mounting base is fixedly mounted in shell right end on hole end surface, and left sealing ring is mounted on mounting base left end, moving-coil
It is fixedly mounted in the groove of rotary shaft left end and is fitted closely with Jing Quan, left housing washer is mounted in shell inner hole, left
Rolling bearing inner ring set is on the rotary shaft and its left end is fixed by the hole of installation on the rotary shaft with retaining ring, and right end withstands on rotation
On left end step in shaft, right housing washer is mounted in shell inner hole and its left side withstands on inner hole right end step
On, right end is withstood on the left side for the hole retaining ring being mounted in shell right end groove, and right rolling bearing inner ring left end passes through
The hole of installation on the rotary shaft is fixed with retaining ring, and on the step of right end top on the rotary shaft, rotating shaft center position is along axis
Direction is machined with inner hole, and rotary shaft right end, which is connected through a screw thread, to be mounted in bracket threaded hole and be equipped with the right side between two junction
Sealing ring.The high pressure swivel seal effect is good and stable and reliable for performance.
But above-mentioned chicksan also has some shortcomings: the rotary joint is by being arranged the dynamic bearing that rolls left
The rotation of rotary shaft is supported with right rolling bearing, can be applied well in high speed conditions, but works as and applies in revolving speed
When lower operating condition, since bearing all has outer ring and inner ring, the volume that will cause entire rotary joint is bigger than normal.
Summary of the invention
The purpose of the present invention is in view of the above-mentioned problems existing in the prior art, propose a kind of rotation of mesohigh middling speed to connect
Head, the technical problem to be solved is that how while guaranteeing normal use performance to reduce volume.
Object of the invention can be realized by the following technical scheme:
Mesohigh middling speed rotary joint, including tubular connector and curved rotary body in 90 °, the connector
One end is with externally threaded connecting pin, and the other end of connector is installation end, and the end of installation end is equipped with mounting hole, mounting hole
Bottom wall be equipped with cavity, one end of rotary body passes through in mounting hole to cavity, and sealing element is equipped between rotary body and cavity, special
Sign is that the mouth thread of the mounting hole is connected with lock sleeve, and one end of lock sleeve is protruded into mounting hole, and rotary body passes through lock
Fixed and form sealing between the two, rotation position is equipped with annular protrusion, annular protrusion and peace on the outside of one end in mounting hole
It fills and forms ring raceway one between the bottom wall in hole, be equipped with several balls one in ring raceway one, annular protrusion is protruded into lock sleeve
Ring raceway two is formed between an end face in mounting hole, is equipped with several balls two in ring raceway two.
In use, rotation position is in outside connector by connector there is externally threaded connecting pin to be connected with pipeline
One end is connected with slewing or the mechanism to move reciprocatingly.This rotary joint by the way that annular protrusion is arranged on rotary body,
By forming ring raceway between annular protrusion and the bottom wall of mounting hole, several balls one are set in ring raceway one together, and
It forms ring raceway two if annular protrusion and lock sleeve protrude between the end face in mounting hole and is arranged in ring raceway two
Dry milling pearl two is matched by ball one, annular protrusion with mounting hole bottom wall and is matched by ball two, annular protrusion and lock sleeve
It closes to be respectively formed the structure that can be supported to the rotation of rotary body, that is, plays the role of similar conventional bearings, meet
Use in rotary course, while compared to the use for eliminating inner ring and outer ring for conventional bearings again, so that connector
Radial dimension do not need to redesign bigger, to reduce the volume of entire rotary joint well.
In general, will not by adopting the above technical scheme when rotary joint is applied in the very high operating condition of revolving speed, this
Be because very big centrifugal force can be generated when revolving speed is very high to ball one and ball two, centrifugal force can make ball one and ball two to
It throws away outside, while the thickness of annular protrusion, inherently than relatively thin, so ball one will make annular protrusion with ball two
Deform it at extruding, so as to cause structural failure, being supported thus using complete two bearings to rotation is
The conventional technical means of those skilled in the art, this is because bearing in be equipped with retainer ball can be limited to avoid
Ball is thrown out of under the action of the centrifugal force during running at high speed.And since this rotary joint is applied in mesohigh middling speed operating condition,
Revolving speed is slow, correspondingly makes ball one and centrifugal force caused by ball two smaller, therefore ball one or ball is not present
Two the problem of being under the action of the centrifugal force squeezed and deformed annular protrusion.
In above-mentioned mesohigh middling speed rotary joint, the bottom wall of the mounting hole is equipped with annular groove one, annular protrusion
The end face opposite with mounting hole bottom wall is equipped with annular groove two, and annular groove one and two face of annular groove are arranged and form ring raceway
One.
Annular groove one, same position on the annular protrusion end face opposite with mounting hole bottom wall are processed on the bottom wall of mounting hole
Place processes annular groove two, and each ball one is placed in the annular groove one on mounting hole bottom wall by when assembly, then the one of rotary body
It is buckled in annular protrusion on each ball one by annular groove two in end insertion installation end, so annular groove one and annular groove two
Between will form ring raceway one, to be detached from the use of outer ring and inner ring while playing the role of similar conventional bearings
Reduce volume.
In above-mentioned mesohigh middling speed rotary joint, the annular protrusion end face opposite with mounting hole bottom wall is equipped with
Annular groove three, lock sleeve protrude into the end face in mounting hole and are arranged equipped with annular groove four, annular groove three and four face of annular groove
And form ring raceway two.
Annular groove three is processed on the annular protrusion end face opposite with mounting hole bottom wall, lock sleeve protrudes into mounting hole
With annular groove four is processed at position on one end face, each ball two is placed in annular groove three, is then threadedly coupled lock sleeve
Oral area to mounting hole is buckled in lock sleeve on each ball two by annular groove four, so annular groove three and annular groove four it
Between will form ring raceway two, so that the use of disengaging outer ring and inner ring is while playing the role of similar conventional bearings to contract
Small size.
In above-mentioned mesohigh middling speed rotary joint, the annular groove one, annular groove two, annular groove three and annular groove four
Groove bottom be cambered surface.
Ball one is sphere, and the groove bottom of annular groove one and annular groove two is set as cambered surface just can be with each one shape of ball
At the mode of face contact, to make to form stronger cooperation between lock sleeve, each ball one and rotary body；Ball two is
Sphere, the groove bottom of annular groove three and annular groove four is set as cambered surface just can form the mode of face contact with each ball two,
To make to form stronger cooperation between lock sleeve, each ball two and connector.It is stronger by being respectively formed at two
Cooperation ensure that rotary joint while reducing overall volume so that foring more stable support to rotary body
Stability in use.
In above-mentioned mesohigh middling speed rotary joint, the lock sleeve, which is located at one end inner wall in mounting hole, has annular
Convex shoulder, and an end face of annular convex shoulder is located at the end face in mounting hole with lock sleeve and is flush, four part of annular groove is located at ring
On shape convex shoulder.
The main purpose being arranged in this way is to cause lock sleeve to be located at mounting hole since the structure wall thickness of conventional sleeve shape is relatively thin
Insufficient area on an interior end face opens up annular groove four, therefore is located at one end inner wall in mounting hole in lock sleeve and increases annular
Convex shoulder increases wall thickness using annular convex shoulder to open up annular groove four.
In above-mentioned mesohigh middling speed rotary joint, the rotary body include curved ontology in 90 ° and be set to installation
Positioning head in end, positioning head are in hollow columnar, and annular protrusion is set to the outside of positioning head, and one end of positioning head is located at cavity
Interior, the other end of positioning head protrudes into lock sleeve, and one end of ontology is protruded into lock sleeve and is threadedly coupled with positioning head.
Rotary body is split as to have included ontology in 90 ° and in the positioning head of hollow columnar, will first be determined in assembly
Potential head is inserted into mounting hole, is then threadedly coupled upper lock sleeve so that mounting hole bottom wall, ball one and annular protrusion cooperate and
Annular protrusion, ball two and lock sleeve cooperate to be respectively formed the structure for being used to support rotation, finally again penetrate ontology one end
It is joined together to form rotary body in lock sleeve and with positioning head threaded one end, had not both interfered be used to support rotation in this way
The formation of structure, while the normal assembly of entire rotary body is not interfered with again.
It is equipped in above-mentioned mesohigh middling speed rotary joint, on the outside of the other end of the lock sleeve in hexagonal convex
The end face of portion, protrusion and installation end leans, and the end of lock sleeve is equipped with mating cavity, and ontology is inserted on the outside of one end in lock sleeve
Equipped with cyclic annular shoulder block, cyclic annular shoulder block part is located in mating cavity, and sealing plain cushion and sealing ring, sealing ring are successively arranged on ontology
It is limited in mating cavity with sealing plain cushion by cyclic annular shoulder block, sealing plain cushion leans with cyclic annular shoulder block, sealing ring and sealing plain cushion
It leans and the inner wall of the lateral wall of sealing ring and mating cavity leans.
Sealing plain cushion and sealing ring are successively arranged on ontology, cyclic annular shoulder block is by sealing ring and sealing plain cushion limit in mating cavity
It is interior, wherein being leant by sealing plain cushion and cyclic annular shoulder block and sealing ring and sealing plain cushion lean can play dust-proof work
With being leant by sealing ring with sealing plain cushion and the inner wall of the lateral wall of sealing ring and mating cavity lean, can played anti-
Water effect, to make to form good sealing between ontology and lock sleeve.
In above-mentioned mesohigh middling speed rotary joint, the cavity interior walls are equipped with annular seal pocket, and sealing element includes equal
Sealing ring and O-ring in annular seal pocket, O-ring cover outside sealing ring, the lateral wall and annular seal pocket of O-ring
Inner wall lean, the inner sidewall of sealing ring and the lateral wall of positioning head lean, and the inner sidewall of sealing ring is equipped with bipassage ring
Shape lubrication groove.
Sealing element is set as including the sealing ring and O-ring being respectively positioned in annular seal pocket, and O-ring is as elastic element
It covers on the outside of sealing ring, while the lateral wall of O-ring and the inner wall of annular seal pocket lean, the elastic force of such O-ring can
Certain frictional force is provided for the rotation of sealing ring, the difficulty that rotary body is rotated synchronously with rotary packing ring is increased, to reduce
Abrasion between sealing element and annular seal pocket.Simultaneously as rotary body increases with the difficulty that rotary packing ring rotates synchronously, meaning
Frictional force between rotary body and sealing ring increase and increase the turning moment of rotary body, therefore in the inner sidewall of sealing ring
Upper setting twice annular lubrication groove, can store lubricating oil using annular lubricant slot, to reduce between sealing ring and rotary body
Frictional force to reduce the turning moment of rotary body, it is ensured that the smooth rotation of rotary body.
In above-mentioned mesohigh middling speed rotary joint, the outside of the sealing ring is equipped with annular groove, annular groove
Groove bottom is cambered surface, and the inner sidewall of O-ring is bonded with the groove bottom part of annular groove.
The groove bottom of annular groove is set as cambered surface, and the inner sidewall of O-ring is bonded with the groove bottom part of annular groove to be added
The big contact area of O-ring and sealing ring further increases rotation so that the frictional force between O-ring and sealing ring increases
Turn the difficulty rotated synchronously with dynamic seal.
Compared with prior art, this mesohigh middling speed rotary joint utilizes ball one, annular protrusion and mounting hole bottom wall phase
It cooperation and is matched with lock sleeve by ball two, annular protrusion to be respectively formed and can be supported to the rotation of rotary body
Structure plays the role of similar conventional bearings, meets the use in rotary course, at the same compared to conventional bearings for
The use of inner ring and outer ring is eliminated again, so that the radial dimension of connector does not need to redesign bigger, thus well
Reduce the volume of entire rotary joint.
In addition, this mesohigh middling speed rotary joint sets sealing element to include sealing ring and O-ring, sealing element is reduced
Abrasion.
Detailed description of the invention
Fig. 1 is the cross-sectional view of this mesohigh middling speed rotary joint.
Fig. 2 is the schematic diagram of ring raceway one and ring raceway two in this mesohigh middling speed rotary joint.
Fig. 3 is the cross-sectional view schematic diagram of connector in this mesohigh middling speed rotary joint.
Fig. 4 is the enlarged drawing in Fig. 1 at A.
Fig. 5 is the cross-sectional view of sealing element in this mesohigh middling speed rotary joint.
In figure, 1, connector；1a, connecting pin；1b, installation end；1b1, mounting hole；1b11, annular groove one；1b2, cavity；
1b21, annular seal pocket；2, rotary body；2a, ontology；2a1, cyclic annular shoulder block；2b, positioning head；2b1, annular protrusion；2b11, ring
Shape slot two；2b12, annular groove three；3, sealing element；4, lock sleeve；4a, annular groove four；4b, annular convex shoulder；4c, protrusion；4d, match
Close chamber；5, ring raceway one；6, ball one；7, ring raceway two；8, ball two；9, plain cushion is sealed；10, sealing ring；11, it seals
Ring；11a, annular lubricant slot；11b, annular groove；12, O-ring；13, locking nut.
Specific embodiment
Following is a specific embodiment of the present invention in conjunction with the accompanying drawings, technical scheme of the present invention will be further described,
However, the present invention is not limited to these examples.
As shown in figures 1 and 3, mesohigh middling speed rotary joint, including tubular connector 1 and complete rotation in 90 °
Swivel 2, one end of connector 1 are to be threaded with locking nut 13 on the 1a of connecting pin, connect with externally threaded connecting pin 1a
The other end of body 1 is installation end 1b, and the outer diameter of installation end 1b is greater than the outer diameter of connecting pin 1a, 2 one end of rotary body and installation end 1b
It is connected and rotary body 2 can be rotated relative to installation end 1b.Fuel feed hole is provided in the axial direction on the 1a of connecting pin, installation end 1b's
End is provided in the axial direction with mounting hole 1b1, and the bottom wall of mounting hole 1b1 is equipped with cavity 1b2, mounting hole 1b1 and fuel feed hole coaxial line
Setting.One end of rotary body 2 passes through in mounting hole 1b1 to cavity 1b2, and sealing element is equipped between rotary body 2 and cavity 1b2
3。
As depicted in figs. 1 and 2, the mouth thread of mounting hole 1b1 is connected with lock sleeve 4, and lock sleeve 4 is in sleeve-shaped, locking
One end of set 4 is protruded into mounting hole 1b1, and being equipped on the outside of the other end of lock sleeve 4 is in hexagonal protrusion 4c, protrusion 4c and installation
The end face of end 1b leans.Rotary body 2 passes through lock sleeve 4 and forms sealing between the two, and rotary body 2 is located in mounting hole 1b1
One end on the outside of be equipped with annular protrusion 2b1, between annular protrusion 2b1 and the bottom wall of mounting hole 1b1 formed ring raceway 1, ring
Several balls 1 continuously arranged are equipped in shape raceway 1.Annular protrusion 2b1 and lock sleeve 4 protrude into one in mounting hole 1b1
Ring raceway 27 is formed between end face, is equipped with several balls 28 continuously arranged in ring raceway 27.
As shown in Fig. 2, specifically, the bottom wall of mounting hole 1b1 is equipped with one 1b11 of annular groove, annular protrusion 2b1 and peace
Fill the opposite end face of hole 1b1 bottom wall and be equipped with two 2b11 of annular groove, one 1b11 of annular groove and two 2b11 face of annular groove be arranged and
Ring raceway 1 is formed, the groove bottom of one 1b11 of intermediate annular groove and two 2b11 of annular groove is cambered surface, the equal portion of each ball 1
Divide in one 1b11 of insertion annular groove and two 2b11 of annular groove and formed and is reclined；Annular protrusion 2b1 is opposite with mounting hole 1b1 bottom wall
End face is equipped with three 2b12 of annular groove, and lock sleeve 4 protrudes into the end face in mounting hole 1b1 equipped with four 4a of annular groove, annular groove
Three 2b12 and four 4a face of annular groove are arranged and form ring raceway 27, the slot of three 2b12 of intermediate annular groove and four 4a of annular groove
Bottom surface is cambered surface, and each ball 28 is partially submerged into three 2b12 of annular groove and four 4a of annular groove and is formed and reclined.
As shown in Fig. 2, lock sleeve 4, which is located at one end inner wall in mounting hole 1b1, has annular convex shoulder 4b, and annular convex shoulder 4b
An end face be located at the end face in mounting hole 1b1 with lock sleeve 4 and be flush, the part four 4a of annular groove is located at annular convex shoulder 4b
On.The main purpose being arranged in this way is to cause lock sleeve 4 to be located in mounting hole 1b1 since the structure wall thickness of conventional sleeve shape is relatively thin
Insufficient area on one end face opens up four 4a of annular groove, therefore is located at one end inner wall in mounting hole 1b1 in lock sleeve 4 and increases
Annular convex shoulder 4b increases wall thickness using annular convex shoulder 4b to open up four 4a of annular groove.
As shown in Figure 1 and Figure 4, rotary body 2 has included ontology 2a and the positioning head in installation end 1b in 90 °
2b, positioning head 2b are in hollow columnar, and annular protrusion 2b1 is set to the outside of positioning head 2b, and one end of positioning head 2b is located at cavity 1b2
Interior, the other end of positioning head 2b protrudes into lock sleeve 4, and one end of ontology 2a is protruded into lock sleeve 4 and is located at lock with positioning head 2b
Threaded one end connection in fixed 4, and sealing is formed between ontology 2a and positioning head 2b, the other end of ontology 2a has outer spiral shell
Line.Lock sleeve 4 is equipped with mating cavity 4d equipped with one end of protrusion 4c, and ontology 2a, which is inserted on the outside of one end of lock sleeve 4, is equipped with cyclic annular gear
Shoulder 2a1, the cyclic annular part shoulder block 2a1 are located in mating cavity 4d, and sealing plain cushion 9 and sealing ring are successively arranged on the end of ontology 2a
10, sealing ring 10 and sealing plain cushion 9 are limited in mating cavity 4d by cyclic annular shoulder block 2a1, sealing plain cushion 9 and cyclic annular shoulder block 2a1 phase
Against sealing ring 10 leans with sealing plain cushion 9 and the inner wall of the lateral wall of sealing ring 10 and matching hole leans.
As shown in Figure 1, Figure 2, shown in Fig. 3 and Fig. 5, cavity 1b2 inner wall is equipped with annular seal pocket 1b21, and sealing element 3 includes equal position
In sealing ring 11 and O-ring 12 in annular seal pocket 1b21,12 sets of O-ring outer in sealing ring 11 and O-ring 12 elastic force
Inwardly act on sealing ring 11, the inner wall of the lateral wall and annular seal pocket 1b21 of O-ring 12 leans, sealing ring 11 it is interior
The lateral wall of side wall and positioning head 2b leans, and the inner sidewall of sealing ring 11 is equipped with twice annular lubrication groove 11a, annular lubricant
Lubricating oil can be stored in slot 11a to reduce the frictional force between rotary body 2 and sealing element 3, to reduce turning moment.Sealing
The outside of ring 11 is equipped with annular groove 11b, and the groove bottom of annular groove 11b is cambered surface, the inner sidewall and annular groove of O-ring 12
The groove bottom part of 11b is bonded, and the contact area of O-ring 12 Yu sealing ring 11 is increased in this way, so that O-ring 12 and sealing ring
Frictional force between 11 increases, and further increases the difficulty that rotary body 2 is rotated synchronously with dynamic seal 3.
In use, pipeline is attached with slewing or movable agency by this rotary joint, have on connector 1
Externally threaded connecting pin 1a is connected with pipeline, has externally threaded one end and slewing on rotary body 2 or moves reciprocatingly
Mechanism be connected, such rotary body 2 can be as slewing or the mechanism to move reciprocatingly be relative to 1 turn of connector
It is dynamic, while may insure oil liquid out of pipeline in rotary joint is input to slewing or moves reciprocatingly mechanism again.
This rotary joint on rotary body 2 by being arranged annular protrusion 2b1, by the bottom of annular protrusion 2b1 and mounting hole 1b1
Ring raceway 1 is formed between wall and several balls 1 and annular protrusion 2b1 and lock sleeve are set in ring raceway 1
Ring raceway 27 is formed between 4 end faces protruded into mounting hole 1b1 and several balls 28 are set in ring raceway 27,
It is matched by ball 1, annular protrusion 2b1 with mounting hole 1b1 bottom wall and by ball 28, annular protrusion 2b1 and lock sleeve 4
It matches to be respectively formed the structure that can be supported to the rotation of rotary body 2, that is, plays the role of similar conventional bearings,
The use in rotary course is met, while compared to the use for eliminating inner ring and outer ring for conventional bearings again, so that even
The radial dimension of junctor 1 does not need to redesign bigger, to reduce the volume of entire rotary joint well.
In addition, making to be capable of forming rigid contact between positioning head 2b and connector 1 using each ball 1, utilize simultaneously
Each ball 28 also to be capable of forming rigid contact between positioning head 2b and lock sleeve 4, and lock sleeve 4 is and 1 spiral shell of connector
Line connection, be all between the components that rotary body 2 is threadedly coupled with positioning head 2b again, therefore is equivalent on entire rotary joint
Rigid contact is formed, can guarantee that positioning head 2b will not generate beat because of vibration in use in this way, to mention
The high stability in use of this rotary joint.
Specific embodiment described herein is only an example for the spirit of the invention.The neck of technology belonging to the present invention
The technical staff in domain can make various modifications or additions to the described embodiments or replace by a similar method
In generation, however, it does not deviate from the spirit of the invention or beyond the scope of the appended claims.
Claims (9)
1. mesohigh middling speed rotary joint, including tubular connector (1) and curved rotary body (2) in 90 °, the connection
One end of body (1) is with externally threaded connecting pin (1a), and the other end of connector (1) is installation end (1b), installation end (1b)
End be equipped with mounting hole (1b1), the bottom wall of mounting hole (1b1) is equipped with cavity (1b2), and one end of rotary body (2) passes through installation
In hole (1b1) to cavity (1b2), sealing element (3) are equipped between rotary body (2) and cavity (1b2), which is characterized in that the peace
The mouth thread of dress hole (1b1) is connected with lock sleeve (4), and one end of lock sleeve (4) is protruded into mounting hole (1b1), rotary body (2)
It is formed across lock sleeve (4) and between the two and is sealed, rotary body (2), which is located on the outside of one end in mounting hole (1b1), is equipped with annular
Protrusion (2b1) forms ring raceway one (5) between annular protrusion (2b1) and the bottom wall of mounting hole (1b1), ring raceway one (5)
It is interior to be equipped with several balls one (6), it is formed between the end face that annular protrusion (2b1) and lock sleeve (4) protrude into mounting hole (1b1)
Ring raceway two (7), ring raceway two (7) is interior to be equipped with several balls two (8).
2. mesohigh middling speed rotary joint according to claim 1, which is characterized in that the bottom wall of the mounting hole (1b1)
It is equipped with annular groove one (1b11), annular protrusion (2b1) end face opposite with mounting hole (1b1) bottom wall is equipped with annular groove two
(2b11), annular groove one (1b11) and (2b11) face of annular groove two are arranged and form ring raceway one (5).
3. mesohigh middling speed rotary joint according to claim 2, which is characterized in that the annular protrusion (2b1) and peace
It fills the opposite end face of hole (1b1) bottom wall and is equipped with annular groove three (2b12), lock sleeve (4) protrudes into one end in mounting hole (1b1)
Face is equipped with annular groove four (4a), and annular groove three (2b12) and (4a) face of annular groove four are arranged and form ring raceway two (7).
4. mesohigh middling speed rotary joint according to claim 3, which is characterized in that the annular groove one (1b11), ring
The groove bottom of shape slot two (2b11), annular groove three (2b12) and annular groove four (4a) is cambered surface.
5. mesohigh middling speed rotary joint according to claim 4, which is characterized in that the lock sleeve (4) is located at installation
One end inner wall in hole (1b1) has annular convex shoulder (4b), and an end face of annular convex shoulder (4b) and lock sleeve (4) are located at installation
An end face in hole (1b1) is flush, and annular groove four (4a) is partially located on annular convex shoulder (4b).
6. mesohigh middling speed rotary joint described according to claim 1 or 2 or 3 or 4 or 5, which is characterized in that the rotary body
(2) positioning head (2b) for including curved ontology in 90 ° (2a) and being set in installation end (1b), positioning head (2b) are in hollow posts
Shape, annular protrusion (2b1) are set to the outside of positioning head (2b), and one end of positioning head (2b) is located in cavity (1b2), positioning head
The other end of (2b) protrudes into lock sleeve (4), and one end of ontology (2a) is protruded into lock sleeve (4) and connected with positioning head (2b) screw thread
It connects.
7. mesohigh middling speed rotary joint according to claim 6, which is characterized in that the other end of the lock sleeve (4)
It is in hexagonal protrusion (4c) that outside, which is equipped with, and protrusion (4c) and the end face of installation end (1b) lean, and the end of lock sleeve (4) is set
Have mating cavity (4d), ontology (2a), which is inserted on the outside of one end in lock sleeve (4), is equipped with cyclic annular shoulder block (2a1), cyclic annular shoulder block (2a1)
Part is located in mating cavity (4d), is successively arranged with sealing plain cushion (9) and sealing ring (10) on ontology (2a), sealing ring (10) with
It seals plain cushion (9) to be limited in mating cavity (4d) by cyclic annular shoulder block (2a1), sealing plain cushion (9) offsets with cyclic annular shoulder block (2a1)
It leans on, sealing ring (10) leans with sealing plain cushion (9) and the lateral wall of sealing ring (10) and the inner wall of mating cavity (4d) lean.
8. mesohigh middling speed rotary joint according to claim 6, which is characterized in that cavity (1b2) inner wall is equipped with
Annular seal pocket (1b21), sealing element (3) include sealing ring (11) and the O-ring being respectively positioned in annular seal pocket (1b21)
(12), O-ring (12) cover sealing ring (11) outside, the inner wall of the lateral wall and annular seal pocket (1b21) of O-ring (12) offsets
It leans on, the lateral wall of the inner sidewall and positioning head (2b) of sealing ring (11) leans, and the inner sidewall of sealing ring (11) is equipped with twice
Annular lubricant slot (11a).
9. mesohigh middling speed rotary joint according to claim 8, which is characterized in that set on the outside of the sealing ring (11)
Have annular groove (11b), the groove bottom of annular groove (11b) is cambered surface, the inner sidewall and annular groove (11b) of O-ring (12)
Groove bottom part fitting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910359971.8A CN109973734A (en) | 2019-04-30 | 2019-04-30 | Mesohigh middling speed rotary joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910359971.8A CN109973734A (en) | 2019-04-30 | 2019-04-30 | Mesohigh middling speed rotary joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109973734A true CN109973734A (en) | 2019-07-05 |
Family
ID=67087267
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910359971.8A Pending CN109973734A (en) | 2019-04-30 | 2019-04-30 | Mesohigh middling speed rotary joint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109973734A (en) |
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| CN205578977U (en) * | 2016-03-03 | 2016-09-14 | 宁波依得力液压制造有限公司 | Right angle rotary joint |
| CN106594441A (en) * | 2015-10-16 | 2017-04-26 | 刘亚娟 | Right-angle rotary joint |
| CN107701836A (en) * | 2016-08-08 | 2018-02-16 | 常州市常通塑管有限公司 | A kind of chicksan |
| CN209909368U (en) * | 2019-04-30 | 2020-01-07 | 浙江苏强格液压股份有限公司 | Middle-high pressure medium-speed rotary joint |
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| CN2713273Y (en) * | 2004-06-21 | 2005-07-27 | 王清刚 | Rotating joint |
| JP2006022925A (en) * | 2004-07-09 | 2006-01-26 | Rix Corp | Rotary joint |
| CN2793457Y (en) * | 2005-02-16 | 2006-07-05 | 徐州车氏密封有限公司 | T-shaped two-way rotary assembled sealing ring |
| DE102006030478A1 (en) * | 2006-07-01 | 2008-01-03 | Schaeffler Kg | Bearing structure for a motor vehicle's wheel hub (WH) driven by a turning knuckle (TK) uses gearing to form a torque- proof link between the WH and the TK linked to a wheel flange and a drive shaft |
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| CN202432156U (en) * | 2012-01-18 | 2012-09-12 | 郑州市中源恒睿机械制造有限公司 | Revolving joint and universal rotary spray gun |
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| CN209909368U (en) * | 2019-04-30 | 2020-01-07 | 浙江苏强格液压股份有限公司 | Middle-high pressure medium-speed rotary joint |
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