CN207971575U - A kind of connection structure of pipe fitting and terminal pad - Google Patents
A kind of connection structure of pipe fitting and terminal pad Download PDFInfo
- Publication number
- CN207971575U CN207971575U CN201721927460.4U CN201721927460U CN207971575U CN 207971575 U CN207971575 U CN 207971575U CN 201721927460 U CN201721927460 U CN 201721927460U CN 207971575 U CN207971575 U CN 207971575U
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- terminal pad
- ringfeder
- pipe fitting
- bearing
- screw
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Abstract
The utility model belongs to laser cutting device technical field,More particularly to the connection structure of a kind of pipe fitting and terminal pad,Including pipe fitting,Terminal pad,Pipe fitting is rotatably coordinated by bearing with terminal pad,Connection sealing structure is equipped at pipe fitting and terminal pad cooperation,It includes backbone sealing ring to connect sealing structure,Ringfeder,Backbone sealing ring is set in the pipe fitting front end on front side of bearing,Ringfeder is set in backbone sealing ring,The outside of bearing,Ringfeder peripheral surface is bonded with terminal pad inner wall,It is equipped at ringfeder peripheral surface and terminal pad cooperation multiple along the evenly arranged annular groove of ringfeder length direction,The pressing plate for compressing ringfeder is arranged on pipe fitting on rear side of ringfeder,Axial screw is equipped at pressing plate,Screw front end passes through ringfeder and terminal pad screw-thread fit,It realizes lossless,Non-key type connects,Junction has preferable leakproofness,And the needs of meeting rotatably.
Description
Technical field
The utility model belongs to laser cutting device technical field, and in particular to a kind of connection knot of pipe fitting and terminal pad
Structure.
Background technology
Connection between existing pipe fitting, terminal pad, it is general to be connected using the connector being radially arranged or screw-thread fit, once
After connection, position is relatively fixed between terminal pad and pipe fitting, can not be relatively rotated.Such as the chucks in laser cutting machine
When being connect with the connecting tube for taking out dirt device, existing connection type destroys the individual structure of itself in joint, causes junction close
Envelope property is poor, and does not have opposite rotation.
Utility model content
Technical problem to be solved in the utility model is in view of the foregoing drawbacks, to provide a kind of connection of pipe fitting and terminal pad
Structure realizes that the connection of lossless, non-key type, junction have preferable leakproofness, and the needs of meet rotatably.
The technical solution that the utility model solves the use of its technical problem is as follows：
A kind of connection structure of pipe fitting and terminal pad, including pipe fitting, terminal pad, pipe fitting are rotatable with terminal pad by bearing
Connection sealing structure is equipped at cooperation, pipe fitting and terminal pad cooperation, connection sealing structure includes backbone sealing ring, ringfeder, skeleton
Sealing ring is set in the pipe fitting front end on front side of bearing, and ringfeder is set in the outside of backbone sealing ring, bearing, ringfeder peripheral surface
It is bonded, is equipped at ringfeder peripheral surface and terminal pad cooperation multiple along the evenly arranged annular of ringfeder length direction with terminal pad inner wall
Slot is arranged with the pressing plate for compressing ringfeder on the pipe fitting on rear side of ringfeder, axial screw is equipped at pressing plate, screw front end passes through ringfeder
With terminal pad screw-thread fit, frictional force, pressure radially in axial direction are generated by the structural deformation of ringfeder, makes pipe fitting, connect
Connect and closely connect between disk, realize pipe fitting, terminal pad without key connection form, connection is reliable, with preferable leakproofness, annular
The setting of slot improves the expanding force that ringfeder goes out, and further increases the reliability connected between terminal pad, pipe fitting.
Further, the screw is not less than screw to ringfeder internal face distance to ringfeder peripheral surface distance.
Further, the pipe fitting front end is the concave part for being arranged backbone sealing ring, bearing, concave part rear portion and pipe fitting
Circumferential surface forms step surface structure, and bearing rear end face is contacted with step surface structure.
Further, the ringfeder rear portion is coordinated by step surface structure and terminal pad rear end face.
Further, the terminal pad inner wall is equipped with the interconnecting piece coordinated with bolt nose threads.
Further, circlip for shaft is equipped between the backbone sealing ring and bearing.
Further, the bearing is deep groove ball bearing, and the number of bearing is two, and spacer ring is equipped between two bearings.
Further, the pipe fitting is hollow pipe.
Further, the pressing plate and ringfeder abutted surface are equipped with the annular protrusion of embedded ringfeder inner ring, before annular protrusion
End is resisted against bearing rear end.
The utility model has the beneficial effects that：Using the above scheme, rubbing in axial direction is generated by the structural deformation of ringfeder
Wipe power, pressure radially, make closely to connect between pipe fitting, terminal pad, realize pipe fitting, terminal pad without key connection form, connection
Reliably, with preferable leakproofness, the setting of annular groove improves the expanding force that ringfeder goes out, and further increases terminal pad, pipe
The reliability connected between part.
Description of the drawings
Through the following detailed description taken in conjunction with the accompanying drawings, the utility model objects, features and advantages above-mentioned and other will
It becomes apparent.
Fig. 1 is a kind of schematic cross-section of embodiment of the utility model.
Fig. 2 is the schematic cross-section at ringfeder in a kind of embodiment of the utility model.
Fig. 3 is the schematic cross-section at ringfeder in the utility model another embodiment.
Wherein：1 is connecting tube, and 11 concave parts, 2 be terminal pad, and 21 be interconnecting piece, and 3 be bearing, and 4 be backbone sealing ring,
5 be ringfeder, and 51 be annular groove, and 6 be pressing plate, and 61 be annular protrusion, and 7 be screw, and 8 be baffle ring, and 9 be bolt, and 91 be fastening nut.
Specific implementation mode
The utility model is described further below in conjunction with the accompanying drawings.
Embodiment 1：Referring to Fig.1, Fig. 2 applies the connection structure of the pipe fitting and terminal pad on laser cutting machine, including sky
Terminal pad 2 at laser cutting machine chucks rear portion is arranged in the connecting tube 1 for connect pumping dirt device of the heart, connecting tube 1
Front end is rotatably coordinated by bearing 3 and 2 inner ring of terminal pad, and bearing 3 uses deep groove ball bearing, connecting tube 1 to coordinate with terminal pad 2
By the connection sealing structure sealing being arranged, connection sealing structure includes backbone sealing ring 4, ringfeder 5,4 sets of backbone sealing ring at place
It is located at the front end of the connecting tube 2 of 3 front side of bearing, ringfeder 5 is set in the outside of backbone sealing ring 1, bearing 3, the periphery of ringfeder 5
Face is bonded with the inner wall of terminal pad 2, and 5 peripheral surface of ringfeder is uniformly arranged equipped with five along 5 length direction of ringfeder at 2 cooperation of terminal pad
The annular groove 51 of cloth is arranged in the connecting tube 2 of the rear side of ringfeder 5 ringfeder 5 being pressed on pressing plate 6 at 2 endoporus of terminal pad, pressing plate
Axial screw 7 is equipped at 6,7 front end of screw passes through ringfeder 5 and 2 disk body screw-thread fit of terminal pad, the inner wall of terminal pad 2 to be equipped with
With the interconnecting piece 21 of 7 nose threads of bolt cooperation, 21 screws 7 of interconnecting piece provide preferable impetus, give full play to screw
Axial compression acts on, and radially, screw 7 is biased to the peripheral surface side of ringfeder 5, the i.e. radial direction at 7 center of screw to 5 circumferential surface of ringfeder
Distance is less than 7 center of screw to the radial distance of 5 inner ring of ringfeder, and the screw 7 axially screwed makes pressing plate 6 be squeezed to terminal pad side
Ringfeder 5, axial extruding, screw screw-in prop up, make the axially upper structural deformation of ringfeder 5, cause it radially to become large-sized, make
The peripheral surface of ringfeder is only fitted on the inner wall of terminal pad 2, the internal face of ringfeder tightly be fitted in bearing, backbone sealing ring
Outer wall on, ringfeder generated at terminal pad endoporus the frictional force in larger radial pressure and axial direction realize without key connection shape
Formula makes connecting tube 1 firmly be connect with terminal pad 2, and do not influence terminal pad 2 rotatably or connecting tube 1 it is rotatable
Property, the annular groove 51 of ringfeder circumferential surface, on the one hand, enhancing ringfeder axially rise by the upper frictional force between terminal pad, another aspect, increase
Radially deflection, the pressure that enhancing ringfeder radially generates improve the bonding strength of terminal pad and connecting tube to set, ensure reliable
Connection, screw is outer radially, further increases the bonding strength between terminal pad, and so that junction is had preferable for ringfeder
Leakproofness, meet and take out requirement of the dirt device to junction air-tightness.
Backbone sealing ring 4 is arranged at connecting tube front end, and backbone sealing ring has and can preferably keep shape and tension
Ability is unlikely to deform, and has longer service life, dust is avoided to enter bearing, can be formed in bearing front preferable close
Feng Xing makes to form closed space between the connecting tube of bearing front and terminal pad, 1 front end of connecting tube be arranged backbone sealing ring 4,
The concave part 11 of bearing 3, is equipped with circlip for shaft 8 between backbone sealing ring 4 and bearing 3,8 inner ring of baffle ring is embedded in concave part 11
It is interior, bearing front is limited, while improving the leakproofness gone out, 11 rear portion of concave part forms step with connecting tube circumferential surface
The rear end face of face structure, bearing 3 is contacted with step surface structure, forms step surface seal structure, and that improves bearing and connecting tube can
The number of assembling, leakproofness, bearing is two, is spaced by the spacer ring 31 of setting between two bearings, the cooperation of two bearings
Face is big, makes to coordinate area big between terminal pad, connecting tube, promotes the stability at cooperation, when a side being avoided to rotate, another party generates
Jumping phenomena avoids influencing leakproofness, and improves the bonding strength between connecting tube and ringfeder, and 5 rear portion of ringfeder passes through step surface knot
Structure coordinates with 2 rear end face of terminal pad, improves cooperation tight ness rating, the leakproofness at this, and pressing plate 6 is equipped with insertion with 5 abutted surface of ringfeder
The annular protrusion 61 of ringfeder inner ring, 61 front end of annular protrusion are resisted against bearing rear end, are limited to bearing rear portion, holding shaft
The stabilization held, multi-sealing structure make junction have higher sealing performance, satisfy the use demand.
Embodiment 2：Referring to Fig.1, Fig. 2, a kind of connection structure of pipe fitting and terminal pad, including hollow connecting tube 1, connection
The front end of disk 2, connecting tube 1 is rotatably coordinated by bearing 3 and 2 inner ring of terminal pad, and bearing 3 uses deep groove ball bearing, connecting tube 1
It being sealed by the connection sealing structure of setting at 2 cooperation of terminal pad, connection sealing structure includes backbone sealing ring 4, ringfeder 5,
Backbone sealing ring 4 is set at the front end of the connecting tube 2 of the front side of bearing 3, ringfeder 5 be set in backbone sealing ring 1, bearing 3 it is outer
The peripheral surface in portion, ringfeder 5 is bonded with the inner wall of terminal pad 2, and five are equipped at 5 peripheral surface of ringfeder and 2 cooperation of terminal pad along ringfeder 5
Length direction evenly arranged annular groove 51 is arranged in the connecting tube 2 of the rear side of ringfeder 5 ringfeder 5 being pressed on 2 endoporus of terminal pad
The pressing plate 6 at place, axial screw 7 is equipped at pressing plate 6, and 7 front end of screw passes through ringfeder 5 and 2 disk body screw-thread fit of terminal pad, connection
The inner wall of disk 2 is equipped with the interconnecting piece 21 coordinated with 7 nose threads of bolt, and 21 screws 7 of interconnecting piece provide preferable impetus, fill
The axial compression effect of screw is waved in distribution, and radially, screw 7 is in the middle part of ringfeder 5, i.e. 7 center of screw to 5 circumferential surface of ringfeder
Radial distance be equal to 7 center of screw to the radial distance of 5 inner ring of ringfeder, the screw 7 axially screwed makes pressing plate 6 to terminal pad one
Side squeezes ringfeder 5, axial extruding, screw screw-in prop up, make the axially upper structural deformation of ringfeder 5, lead to its radially size
Become larger, the peripheral surface of ringfeder made only to be fitted on the inner wall of terminal pad 2, the internal face of ringfeder only be fitted in bearing, bone
On the outer wall of frame sealing ring, ringfeder generates the frictional force in larger radial pressure and axial direction at terminal pad endoporus and realizes without key
Type of attachment makes connecting tube 1 firmly be connect with terminal pad 2, and do not influence terminal pad 2 rotatably or connecting tube 1
Rotatably, the annular groove 51 of ringfeder circumferential surface, on the one hand, the upper frictional force between terminal pad of enhancing ringfeder axial direction, on the other hand,
Increase ringfeder radially deflection, the pressure that enhancing ringfeder radially generates improves the bonding strength of terminal pad and connecting tube, protects
The reliable connection of card, screw are located radially in the middle part of ringfeder, keep the expanding force at both ends inside and outside ringfeder balanced, prolong the service life,
And ringfeder makes junction have preferable leakproofness.
Backbone sealing ring 4 is arranged at connecting tube front end, and backbone sealing ring has and can preferably keep shape and tension
Ability is unlikely to deform, and has longer service life, dust is avoided to enter bearing, can be formed in bearing front preferable close
Feng Xing makes to form closed space between the connecting tube of bearing front and terminal pad, 1 front end of connecting tube be arranged backbone sealing ring 4,
The concave part 11 of bearing 3, is equipped with circlip for shaft 8 between backbone sealing ring 4 and bearing 3,8 inner ring of baffle ring is embedded in concave part 11
It is interior, bearing front is limited, while improving the leakproofness gone out, 11 rear portion of concave part forms step with connecting tube circumferential surface
The rear end face of face structure, bearing 3 is contacted with step surface structure, forms step surface seal structure, and that improves bearing and connecting tube can
The number of assembling, leakproofness, bearing is two, is spaced by the spacer ring 31 of setting between two bearings, the cooperation of two bearings
Face is big, makes to coordinate area big between terminal pad, connecting tube, promotes the stability at cooperation, when a side being avoided to rotate, another party generates
Jumping phenomena avoids influencing leakproofness, and improves the bonding strength between connecting tube and ringfeder, and pressing plate 6 is equipped with 5 abutted surface of ringfeder
The annular protrusion 61 of embedded ringfeder inner ring, 61 front end of annular protrusion are resisted against bearing rear end, are limited to bearing rear portion, protect
The stabilization of bearing is held, multi-sealing structure makes junction have higher sealing performance, satisfies the use demand.
Embodiment 3：Referring to Fig.1, Fig. 3, a kind of connection structure of pipe fitting and terminal pad, including hollow connecting tube 1, connection
The front end of disk 2, connecting tube 1 is rotatably coordinated by bearing 3 and 2 inner ring of terminal pad, and bearing 3 uses deep groove ball bearing, connecting tube 1
It being sealed by the connection sealing structure of setting at 2 cooperation of terminal pad, connection sealing structure includes backbone sealing ring 4, ringfeder 5,
Backbone sealing ring 4 is set at the front end of the connecting tube 2 of the front side of bearing 3, ringfeder 5 be set in backbone sealing ring 1, bearing 3 it is outer
The peripheral surface in portion, ringfeder 5 is bonded with the inner wall of terminal pad 2, and five are equipped at 5 peripheral surface of ringfeder and 2 cooperation of terminal pad along ringfeder 5
Length direction evenly arranged annular groove 51 is arranged in the connecting tube 2 of the rear side of ringfeder 5 ringfeder 5 being pressed on 2 endoporus of terminal pad
The pressing plate 6 at place, 5 body of ringfeder are equipped with bolt 9 in an axial direction, bolt 9 by extending back on front side of ringfeder, 9 front end of bolt with rise
Set front end is fixed, and bolt rear end extends to 6 rear side of pressing plate, and 9 rear end 6 of bolt is equipped with fastening nut 91, is made by fastening nut 91
Pressing plate compresses ringfeder, and axial extruding makes the axially upper structural deformation of ringfeder 5, causes it radially to become large-sized, make the outer of ringfeder
Circumferential surface is only fitted on the inner wall of terminal pad 2, the outer wall for being fitted in bearing, backbone sealing ring of the internal face of ringfeder only
On, ringfeder generates the frictional force in larger radial pressure and axial direction at terminal pad endoporus and realizes without key connection form, makes company
Take over 1 firmly connect with terminal pad 2, and do not influence terminal pad 2 rotatably or connecting tube 1 rotatably, ringfeder
The annular groove 51 of circumferential surface, on the one hand, axially on the other hand the upper frictional force between terminal pad it is radial to increase ringfeder to enhancing ringfeder
Upper deflection, the pressure that enhancing ringfeder radially generates improve the bonding strength of terminal pad and connecting tube, and guarantee reliably connects
It connects, screw is located radially in the middle part of ringfeder, keeps the expanding force at both ends inside and outside ringfeder balanced, prolongs the service life, and ringfeder makes company
Meeting place has preferable leakproofness.
The above is only the preferred embodiment of the utility model, not does limit in any form to the utility model
It makes, to any simple modification, equivalent variations made by above example in every foundation the technical essence of the utility model, falls
Enter within the scope of protection of the utility model.
Claims (9)
1. the connection structure of a kind of pipe fitting and terminal pad, including pipe fitting, terminal pad, pipe fitting is rotatably matched by bearing with terminal pad
It closes, it is characterised in that：Be equipped with connection sealing structure at pipe fitting and terminal pad cooperation, connection sealing structure include backbone sealing ring,
Ringfeder, backbone sealing ring are set in the pipe fitting front end on front side of bearing, and ringfeder is set in the outside of backbone sealing ring, bearing,
Ringfeder peripheral surface is bonded with terminal pad inner wall, ringfeder peripheral surface at terminal pad cooperation be equipped with it is multiple uniform along ringfeder length direction
The annular groove of arrangement is arranged with the pressing plate for compressing ringfeder on the pipe fitting on rear side of ringfeder, is equipped with axial screw at pressing plate, before screw
End is across ringfeder and terminal pad screw-thread fit.
2. the connection structure of a kind of pipe fitting and terminal pad according to claim 1, it is characterised in that：The screw is to rising
Peripheral surface distance is covered not less than screw to ringfeder internal face distance.
3. the connection structure of a kind of pipe fitting and terminal pad according to claim 1, it is characterised in that：The pipe fitting front end
To be arranged the concave part of backbone sealing ring, bearing, concave part rear portion and pipe fitting circumferential surface form step surface structure, bearing rear end face with
Step surface structure contacts.
4. the connection structure of a kind of pipe fitting and terminal pad according to claim 1, it is characterised in that：The ringfeder rear portion
Coordinated by step surface structure and terminal pad rear end face.
5. the connection structure of a kind of pipe fitting and terminal pad according to claim 1, it is characterised in that：In the terminal pad
Wall is equipped with the interconnecting piece coordinated with bolt nose threads.
6. the connection structure of a kind of pipe fitting and terminal pad according to claim 1, it is characterised in that：The reinforced seal
Circlip for shaft is equipped between circle and bearing.
7. the connection structure of a kind of pipe fitting and terminal pad according to claim 1, it is characterised in that：The bearing is deep
The number of ditch ball bearing, bearing is two, and spacer ring is equipped between two bearings.
8. the connection structure of a kind of pipe fitting and terminal pad according to claim 1, it is characterised in that：The pipe fitting is sky
Heart pipe.
9. the connection structure of a kind of pipe fitting and terminal pad according to claim 1, it is characterised in that：The pressing plate with rise
The annular protrusion that abutted surface is equipped with embedded ringfeder inner ring is covered, annular protrusion front end is resisted against bearing rear end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721927460.4U CN207971575U (en) | 2017-12-31 | 2017-12-31 | A kind of connection structure of pipe fitting and terminal pad |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721927460.4U CN207971575U (en) | 2017-12-31 | 2017-12-31 | A kind of connection structure of pipe fitting and terminal pad |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207971575U true CN207971575U (en) | 2018-10-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721927460.4U Active CN207971575U (en) | 2017-12-31 | 2017-12-31 | A kind of connection structure of pipe fitting and terminal pad |
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| Country | Link |
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| CN (1) | CN207971575U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108145330A (en) * | 2017-12-31 | 2018-06-12 | 常州戴芮珂机电科技有限公司 | A kind of connection structure of pipe fitting and terminal pad |
| CN109483069A (en) * | 2018-11-29 | 2019-03-19 | 常州戴芮珂机电科技有限公司 | A kind of chuck with pumping dirt function |
-
2017
- 2017-12-31 CN CN201721927460.4U patent/CN207971575U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108145330A (en) * | 2017-12-31 | 2018-06-12 | 常州戴芮珂机电科技有限公司 | A kind of connection structure of pipe fitting and terminal pad |
| CN109483069A (en) * | 2018-11-29 | 2019-03-19 | 常州戴芮珂机电科技有限公司 | A kind of chuck with pumping dirt function |
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