CN209424881U - A kind of needle bearing outer ring pressure heads mechanism - Google Patents
A kind of needle bearing outer ring pressure heads mechanism Download PDFInfo
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- CN209424881U CN209424881U CN201821929734.8U CN201821929734U CN209424881U CN 209424881 U CN209424881 U CN 209424881U CN 201821929734 U CN201821929734 U CN 201821929734U CN 209424881 U CN209424881 U CN 209424881U
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- sleeve
- outer ring
- axle sleeve
- needle bearing
- bearing outer
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Abstract
The utility model discloses a kind of needle bearing outer ring pressure heads mechanism, including guide part, pressing sleeve, and axle sleeve, pressing sleeve is slidably connected with guide part, axle sleeve one end is fixed with ring flange, mounting groove is provided between ring flange and guide part, the other end of axle sleeve is fixed with end cap, the both ends axle sleeve of close axle sleeve is internally provided with thrust bearing, thrust bearing includes seat ring of the one side with ball-and-socket, rolling element, and blowout patche of the one side with ball-and-socket, seat ring is abutted with axle sleeve, and the one side in seat ring with ball-and-socket is towards rolling element, blowout patche is abutted with oilless bearing, and in blowout patche band ball-and-socket one side backwards to rolling element, oilless bearing is slidably connected with pressing sleeve.Needle bearing outer ring pressure heads mechanism described in the utility model, it floats since guide part and pressing sleeve exist radially, so that the centre bore positioning of guide part and engine cylinder body be directed at, such that needle bearing outer ring is quick, smoothly enters cylinder interior, improves the efficiency of press fitting.
Description
Technical field
The utility model belongs to engine cylinder body mounting technology field, and in particular to a kind of needle bearing outer ring heading machine
Structure.
Background technique
In engine cylinder body assembling process, needle bearing outer ring needs to be packed into the inside of engine cylinder body.Lead in industry
This operation is completed frequently with pressure heads mechanism.But existing pressure head does not have float function, i.e., when the positioning end of pressure head and hair
Pressure head not can be carried out automated location correction when the centre bore of motivation cylinder body deviates, and needle bearing outer ring holds during press fitting
Gouge easily is blocked, thus cannot smoothly be pressed into engine cylinder body, and then causes needle bearing press fitting speed slow, reduces operation effect
Rate；In addition, pressure head, which is withdrawn, to be separated with press, cause press that cannot be pressed the needle bearing outer ring of different location respectively.
Utility model content
Technical problem to be solved by the utility model is to provide a kind of needle bearing outer ring pressure heads mechanism, solve existing
There is the technical issues of pressure head cannot carry out position correction automatically in technology.
In order to solve the above technical problems, the technical solution adopted in the utility model: a kind of needle bearing outer ring pressure heads mechanism,
It is characterized by comprising the guide part of coaxial arrangement, pressing sleeve and axle sleeve, the pressing sleeve be located at the outside of guide part and with lead
It is slidably connected to part, the axle sleeve is located at the outside of pressing sleeve, and axle sleeve one end is fixed with ring flange, the ring flange and guide part
Between be provided with the mounting groove fixed for needle bearing outer ring, the other end of axle sleeve is fixed with end cap, close to the both ends of axle sleeve
The axle sleeve is internally provided with thrust bearing, and the thrust bearing includes seat ring of the one side with ball-and-socket, rolling element, Yi Jiyi
Blowout patche of the side with ball-and-socket, the seat ring are abutted with axle sleeve, and the one side in seat ring with ball-and-socket is towards rolling element, the blowout patche
It is connected with oilless bearing, and backwards to rolling element, the oilless bearing is slidably connected band ball-and-socket one side with pressing sleeve in blowout patche.
Preferably, positioning bushing is provided between thrust bearing described in the inside positioned at axle sleeve.
Preferably, polyurethane rings are respectively arranged between the both ends and thrust bearing of the positioning bushing.
Preferably, it is fixed with guiding axis outside the axle sleeve, and guiding axis is parallel with pressing sleeve, reset is provided in guiding axis
Spring.
Preferably, the end of the guiding axis and pressing sleeve is provided with connection frame, and the end of the guiding axis passes through oil-free
Bushing is fixed with connection frame.
Preferably, the end of the pressing sleeve is provided with gland, is provided with gasket between the gland and pressing sleeve.
Preferably, described in the inside positioned at axle sleeve between blowout patche and end cap, tune is respectively arranged between blowout patche and ring flange
Whole pad.
Preferably, the guide part includes guide rod and the guide sleeve positioned at guide rod end, and guide sleeve and guide rod pass through split pin
Connection.
Preferably, the end of guide rod described in the inside positioned at guide sleeve is fixed with guide head.
Preferably, it is provided with cylindrical pin with internal thread in the guide rod, guide groove is axially offered in the pressing sleeve, it is described interior
Cylindrical pin with external thread slides in guide groove.
The utility model has the beneficial effects that the utility model discloses a kind of needle bearing outer ring pressure heads mechanism, including coaxial
Guide part, pressing sleeve and the axle sleeve of setting, pressing sleeve are located at the outside of guide part and are slidably connected with guide part, and axle sleeve is located at pressure
The outside of set, axle sleeve one end are fixed with ring flange, are provided between ring flange and guide part for the fixation of needle bearing outer ring
The other end of mounting groove, axle sleeve is fixed with end cap, and the both ends axle sleeve of close axle sleeve is internally provided with thrust bearing, thrust axis
It contracts and includes seat ring of the one side with ball-and-socket, the blowout patche of rolling element and one side with ball-and-socket, seat ring is abutted with axle sleeve, and seat ring
For the middle one side with ball-and-socket towards rolling element, blowout patche is connected with oilless bearing, and in blowout patche band ball-and-socket one side backwards to rolling element,
Oilless bearing is slidably connected with pressing sleeve.Needle bearing outer ring pressure heads mechanism described in the utility model, due to guide part and pressure
Set exists radially to float, so that guide part is aligned with the positioning of the centre bore of engine cylinder body, so that outside needle bearing
Ring can quickly, smoothly enter cylinder interior, improve the efficiency of press fitting.
Detailed description of the invention
Fig. 1 is the cross-sectional view of needle bearing outer ring pressure heads mechanism；
Fig. 2 is the structural schematic diagram of thrust bearing；
Fig. 3 is the attachment structure schematic diagram of needle bearing outer ring pressure heads mechanism and engine cylinder body；
Fig. 4 is the cross-sectional view of needle bearing outer ring pressure heads mechanism and engine cylinder body；
Appended drawing reference in figure, 1- guide part, 1.1- guide rod, 1.2- guide sleeve；2- pressing sleeve；3- axle sleeve；4- split pin；5- guiding
Head；6- ring flange, 6.1- mounting groove；7- end cap；8- thrust bearing, 8.1- seat ring, the one side with ball-and-socket in 8.1.1- seat ring,
8.2- rolling element, 8.3- blowout patche, band ball-and-socket one side in 8.3.1- blowout patche；9- oilless bearing；10- adjusting pad；11- positioning lining
Set；12- gasket；13- polyurethane rings；14- bushing；15- mounting bracket；16- positioning sleeve；17- guiding axis；18- reset spring；
19- connection frame；20- oil-free bushing；21- gland；22- cylindrical pin with internal thread；23- needle bearing outer ring.
Specific embodiment
Below by the technical scheme in the utility model embodiment is clearly and completely described, it is clear that described
Embodiment is only the utility model a part of the embodiment, instead of all the embodiments.Based on the implementation in the utility model
Example, every other embodiment obtained by those of ordinary skill in the art without making creative efforts belong to
The range of the utility model protection.
Embodiment 1:
A kind of needle bearing outer ring pressure heads mechanism, as shown in Figure 1, including guide part 1, pressing sleeve 2 and the axis of coaxial arrangement
Set 3.In the present embodiment, guide part 1 includes guide rod 1.1 and the guide sleeve 1.2 positioned at guide rod end, is offered inside guide sleeve 1.2
Through slot 1.2.1, guide sleeve 1.2 are connect with guide rod 1.1 by split pin 4.It can be abutted and be started to avoid guide sleeve using split pin connection
Guide sleeve axially loaded is excessive and cause the guide sleeve end contacted with engine cylinder body impaired after machine cylinder body.It leads inside positioned at guide sleeve
The end of bar 1.1 is fixed with guide head 5.Guide head with cylinder center hole for being positioned.Pressing sleeve 2 is located at the outer of guide rod 1.1
It portion and is slidably connected with guide rod 1.1.Axle sleeve 3 is located at the outside of pressing sleeve 2, and 3 one end of axle sleeve is fixed with ring flange 6, and 6 sets of ring flange
It is located at the outside of guide rod 1.1, the mounting groove 6.1 fixed for needle bearing outer ring 23 is provided between ring flange 6 and guide rod 1.1.
The other end of axle sleeve 3 is fixed with end cap 7.In order to realize guide rod and pressing sleeve floating in the radial direction, close to the both ends of axle sleeve
The inside of axle sleeve 3 is respectively arranged with thrust bearing 8.As shown in Fig. 2, thrust bearing 8 include seat ring 8.1 of the one side with ball-and-socket,
The blowout patche 8.3 of rolling element 8.2 and one side with ball-and-socket.Seat ring 8.1 is abutted with axle sleeve 3, and with the one side of ball-and-socket in seat ring
8.1.1 towards rolling element 8.2, blowout patche 8.3 connects oilless bearing 9, and in blowout patche band ball-and-socket one side 8.3.1 backwards to rolling element
8.2.Adjusting pad 10 is respectively arranged between two thrust bearings 8 and ring flange 6 and end cap 7.Two thrust axis in order to prevent
Generation axial float is held, positioning bushing 11 is provided between two thrust bearings 8, positions and is arranged between bushing 11 and blowout patche 8.3
There is gasket 12.In order to overcome the gravity of guide rod, avoids guide rod sagging when laterally disposed, position between bushing 11 and gasket 12
It is additionally provided with polyurethane rings 13.Polyurethane rings, which are arranged, can guarantee that the center line of guide rod and the center line of axle sleeve are consistent.Nothing
Oil bearing 9 is slidably connected with pressing sleeve 2.In the present embodiment, oilless bearing 9 setting there are two, the position of two oilless bearings 9 with push away
The position of power bearing 8 is corresponding.Axial float occurs for two oilless bearings in order to prevent, is provided between two oilless bearings 9
Bushing 14.
As shown in Figures 3 and 4, at work, the centre bore of the guide head in guide rod and engine cylinder body positions.If guide head
And the central hole location of engine cylinder body is there are when deviation, and due to the presence of thrust bearing, blowout patche can occur along rolling element
Movement radially, and then guide rod is driven radially to float with pressing sleeve generation.Therefore by radially adjusting guide rod, so that guide rod
In guide head alignment engine cylinder body centre bore so that needle bearing outer ring can quickly, smoothly enter cylinder body
Inside improves the efficiency of press fitting.
It is fixed there are two mounting bracket 15 in axle sleeve 3 in the present embodiment, it is fixed with positioning sleeve 16 inside mounting bracket 15,
Guiding axis 17 is fixed in positioning sleeve 16.Gasket 12 is fixed with positioned at the end of the side guiding axis of mounting bracket.Guiding axis 17
It is arranged in parallel with pressing sleeve 2, reset spring 18 is provided in guiding axis 17.The end of guiding axis 17 and pressing sleeve 2 is provided with connection
The end of frame 19, guiding axis 17 is fixed by oil-free bushing 20 and connection frame 19.One end of reset spring 18 by gasket 12 with
Positioning sleeve 16 abuts, and the other side of reset spring 18 is abutted by gasket 12 with oil-free bushing 20.It is led positioned at oil-free bushing side
Gasket 12 is fixed with to the end of axis 17.The end of pressing sleeve 2 is fixed with gland 21, is provided with gasket between gland 21 and pressing sleeve 2
12.After press forces in gland, for gland by external force on pressing sleeve, power is acted on oil-free bushing by connecting bracket by pressing sleeve
On, so that oil-free bushing suppresses reset spring, after needle bearing outer ring is pressed into engine cylinder body inside by pressing sleeve, press is not
Gland is forced in again, at this point, reset spring discharges compressed elastic force, reset spring drives oil-free bushing sliding along guiding axis
Dynamic, oil-free bushing drives pressing sleeve to return by connection frame.When oil-free bushing reaches the end position of guiding axis, due to being oriented to
The limitation of axis end pad, pressure head stopping is withdrawn, so that pressure head is separated with press.
In order in pressing sleeve pressing process, the movement in axial direction only occurs for pressing sleeve without radially rotating, this implementation
In example, cylindrical pin with internal thread 22 is provided in guide rod 1.1, pressing sleeve 2 is axial to offer guide groove (not marking in figure), internal screw thread
Straight pin 22 slides in guide groove.Cylindrical pin with internal thread plays the role of limiting guide rod and pressing sleeve relative position.
Above description is only a specific implementation of the present invention, but the protection scope of the utility model is not limited to
In this, anyone skilled in the art within the technical scope disclosed by the utility model, can readily occur in variation
Or replacement, it should be covered within the scope of the utility model.Therefore, the protection scope of the utility model should be with the power
Subject to the protection scope that benefit requires.
Claims (10)
1. a kind of needle bearing outer ring pressure heads mechanism, it is characterised in that: guide part, pressing sleeve and axle sleeve including coaxial arrangement,
The pressing sleeve is located at the outside of guide part and is slidably connected with guide part, and the axle sleeve is located at the outside of pressing sleeve, axle sleeve one end
Be fixed with ring flange, be provided with the mounting groove fixed for needle bearing outer ring between the ring flange and guide part, axle sleeve it is another
One end is fixed with end cap, is internally provided with thrust bearing close to axle sleeve described in the both ends of axle sleeve, the thrust bearing includes
Seat ring of the one side with ball-and-socket, the blowout patche of rolling element and one side with ball-and-socket, the seat ring are abutted with axle sleeve, and in seat ring
For one side with ball-and-socket towards rolling element, the blowout patche connects oilless bearing, and in blowout patche band ball-and-socket one side backwards to rolling element,
The oilless bearing is slidably connected with pressing sleeve.
2. a kind of needle bearing outer ring pressure heads mechanism according to claim 1, it is characterised in that: described in the inside positioned at axle sleeve
Positioning bushing is provided between thrust bearing.
3. a kind of needle bearing outer ring pressure heads mechanism according to claim 2, it is characterised in that: the both ends of the positioning bushing
Polyurethane rings are respectively arranged between thrust bearing.
4. a kind of needle bearing outer ring pressure heads mechanism according to claim 1, it is characterised in that: be fixed with outside the axle sleeve
Guiding axis, and guiding axis is parallel with pressing sleeve, and reset spring is provided in guiding axis.
5. a kind of needle bearing outer ring pressure heads mechanism according to claim 4, it is characterised in that: the guiding axis and pressing sleeve
End be provided with connection frame, the end of the guiding axis is fixed by oil-free bushing and connection frame.
6. a kind of needle bearing outer ring pressure heads mechanism according to claim 5, it is characterised in that: the end of the pressing sleeve is arranged
There is gland, is provided with gasket between the gland and pressing sleeve.
7. a kind of needle bearing outer ring pressure heads mechanism according to claim 1, it is characterised in that: described in the inside positioned at axle sleeve
Adjusting pad is respectively arranged between blowout patche and end cap, between blowout patche and ring flange.
8. a kind of needle bearing outer ring pressure heads mechanism according to claim 1, it is characterised in that: the guide part includes guide rod
And the guide sleeve positioned at guide rod end, guide sleeve and guide rod pass through split pin connection.
9. a kind of needle bearing outer ring pressure heads mechanism according to claim 8, it is characterised in that: described in the inside positioned at guide sleeve
The end of guide rod is fixed with guide head.
10. a kind of needle bearing outer ring pressure heads mechanism according to claim 9, it is characterised in that: be provided in the guide rod
Cylindrical pin with internal thread axially offers guide groove in the pressing sleeve, and the cylindrical pin with internal thread slides in guide groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821929734.8U CN209424881U (en) | 2018-11-21 | 2018-11-21 | A kind of needle bearing outer ring pressure heads mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821929734.8U CN209424881U (en) | 2018-11-21 | 2018-11-21 | A kind of needle bearing outer ring pressure heads mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209424881U true CN209424881U (en) | 2019-09-24 |
Family
ID=67969180
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821929734.8U Active CN209424881U (en) | 2018-11-21 | 2018-11-21 | A kind of needle bearing outer ring pressure heads mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209424881U (en) |
-
2018
- 2018-11-21 CN CN201821929734.8U patent/CN209424881U/en active Active
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