CN208845668U - A kind of integration screw rod bearing structure - Google Patents
A kind of integration screw rod bearing structure Download PDFInfo
- Publication number
- CN208845668U CN208845668U CN201821498669.8U CN201821498669U CN208845668U CN 208845668 U CN208845668 U CN 208845668U CN 201821498669 U CN201821498669 U CN 201821498669U CN 208845668 U CN208845668 U CN 208845668U
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- CN
- China
- Prior art keywords
- screw rod
- carrying axle
- bearing
- axle
- carrying
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Abstract
The utility model discloses a kind of integrated screw rod bearing structure, belong to electric pushrod technical field, including for driving inner tube with respect to the screw rod of outer tube axial movement, bearing seat is fixedly connected on outer tube, one end of screw rod is connected with the carrying axle coaxial with screw rod, positioning shaft shoulder is provided between screw rod and carrying axle, the inside of bearing seat is arranged in carrying axle, and the outside of carrying axle is successively arranged with gasket one, thrust bearing one, supporting block, thrust bearing two, gasket two and block.The utility model is designed reasonably, structure novel, using thrust bearing one and thrust bearing two, axial force two-way on screw rod is carried, the axial carrying capacity of screw rod is improved, and is supported by axial-rotation of the deep groove ball bearing to screw rod, enables screw rod is smooth smoothly to rotate, the transmission efficiency for greatly improving screw rod improves the stationarity of electric pushrod entirety.
Description
Technical field
The utility model relates to electric pushrod technical field more particularly to a kind of integrated screw rod bearing structures.
Background technique
Current electric pushrod often uses deep groove ball bearing to rotationally support screw rod, and bottom be arranged gasket or
The plane bearing stress axial for screw rod carrying, the electric pushrod can only carry unilateral thrust, can not carry big load
Axial pulling force, limits the application field and promoted extension of electric pushrod.And screw rod is directly contradicted with bearing, prolonged
Screw rod, bearing or other components are easy to produce abrasion in operational process, and the service life of electric pushrod is caused not grown, and the later period for
The maintenance of abrasion is also more difficult, needs replacing the components of the key positions such as screw rod, maintenance cost is big.
Electric pushrod is easy to produce certain vibration in the process of running, the support knot of screw rod during long-play
Structure is easy to produce loosening, and the axial direction that screw rod is also easy to produce after loosening is altered, and then generates bigger vibration, influences the operation of electric pushrod
Stability.
Utility model content
Purpose of the utility model is to solve the problems in background techniques, and the one kind proposed can carry two-way axis
To load, stable integrated screw rod bearing structure.
To achieve the goals above, the utility model adopts the technical scheme that
A kind of integration screw rod bearing structure, it is special including the screw rod for driving inner tube to move axially relative to outer tube
Sign is: bearing seat is fixedly connected on the outer tube, one end of the screw rod is connected with the carrying axle coaxial with screw rod, described
Positioning shaft shoulder is provided between screw rod and carrying axle, the inside of bearing seat, the outside of the carrying axle is arranged in the carrying axle
It is successively arranged with gasket one, thrust bearing one, supporting block, thrust bearing two, gasket two and block, the gasket one is far from support
The side of block is positioned by positioning shaft shoulder and carrying axle, and the block, which is threadably secured, to be connected in carrying axle, the support
Block is fixedly connected with bearing seat, and one end in the carrying axle far from supporting block is arranged with axle sleeve one and transmission gear, the biography
Moving gear is fixedly connected with carrying axle, and the outer cover of the axle sleeve one is equipped with deep groove ball bearing, and the deep groove ball bearing is mounted on
The inside of bearing seat.
Preferably, axially rotation limitation between the transmission gear and carrying axle.
Preferably, the carrying axle passes through axially rotation limitation between the flat position of axis or connecting key and transmission gear.
Preferably, it is moved axially and is limited by clamping screw between the transmission gear and carrying axle.
Preferably, the clamping screw passes through the axis hole of transmission gear and the end-face helical of carrying axle connects, the locking
Transmission gear is moved axially limitation by bolt head by bolt.
Preferably, the supporting block is integrated with bearing seat.
Preferably, axle sleeve two is arranged between the thrust bearing one and carrying axle, the axle sleeve two and gasket one are fixed
Connection.
Preferably, axle sleeve three is arranged between the thrust bearing two and carrying axle, the axle sleeve three and gasket two are fixed
Connection.
Compared with prior art, utility model has the advantages that
The utility model is designed reasonably, structure novel, using thrust bearing one and thrust bearing two, to two-way on screw rod
Axial force is carried, and improves the axial carrying capacity of screw rod, and carry out by axial-rotation of the deep groove ball bearing to screw rod
Bearing, enables screw rod is smooth smoothly to rotate, greatly improves the transmission efficiency of screw rod, improves the flat of electric pushrod entirety
Stability.
By setting positioning shaft shoulder and block, by gasket one, thrust bearing one, supporting block, thrust bearing two and gasket two
It is fixedly clamped between positioning shaft shoulder and block, forms overall structure, block is fixed on carrying axle by the way of being threadedly coupled
On, installation is fixed in the mode that can be adjusted by the thread, convenient for assembly.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of integrated screw rod bearing structure of the utility model；
Fig. 2 is a kind of schematic diagram of internal structure of integrated screw rod bearing structure of the utility model.
In figure: 1, screw rod；2, gasket one；3, thrust bearing one；4, supporting block；5, thrust bearing two；6, gasket two；7, it keeps off
Block；8, axle sleeve one；9, transmission gear；10, clamping screw；11, positioning shaft shoulder；12, axle sleeve two；13, axle sleeve three；14, deep-groove ball
Bearing；15, bearing seat；16, outer tube；17, inner tube；18, carrying axle.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.
Referring to Fig.1-2, a kind of integrated screw rod bearing structure, including for driving inner tube 17 relative to the axial shifting of outer tube 16
Dynamic screw rod 1 is fixedly connected with bearing seat 15 on outer tube 16, and one end of screw rod 1 is connected with the carrying axle 18 coaxial with screw rod 1,
Be provided with positioning shaft shoulder 11 between screw rod 1 and carrying axle 18, carrying axle 18 is arranged in the inside of bearing seat 15, carrying axle 18 it is outer
Portion is successively arranged with gasket 1, thrust bearing 1, supporting block 4, thrust bearing 25, gasket 26 and block 7, and gasket 1 is remote
Side from supporting block 4 is positioned by positioning shaft shoulder 11 and carrying axle 18, and block 7, which is threadably secured, is connected to carrying axle 18
On, supporting block 4 is fixedly connected with bearing seat 15, and supporting block 4 is integrated with bearing seat 15, far from support in carrying axle 18
One end of block 4 is arranged with axle sleeve 1 and transmission gear 9, and transmission gear 9 is fixedly connected with carrying axle 18, the outer cover of axle sleeve 1
Equipped with deep groove ball bearing 14, deep groove ball bearing 14 is mounted on the inside of bearing seat 15.
By the way that bearing seat 15 is arranged on outer tube 16, it is bolted to connection, carries between outer tube 16 and bearing seat 15
Seat 15 can carry out independent bearing to the load on electric pushrod, improve the bearing strength of electric pushrod.Using thrust bearing 1
With thrust bearing 25, axial force two-way on screw rod 1 is carried, the axial carrying capacity of screw rod 1 is improved, and passed through
Deep groove ball bearing 14 supports the axial-rotation of screw rod 1, enables screw rod 1 is smooth smoothly to rotate, greatly improves silk
The transmission efficiency of bar 1 improves the stationarity of electric pushrod entirety.
The axial load of side on screw rod 1 is successively transferred to supporting block 4 along screw rod 1, gasket 1, thrust bearing 1
On, then it is transferred to the dispersion carrying that bearing seat 15 carries out load；The axial load of the other side successively along block 7, gasket 26,
Thrust bearing 25 is transferred to supporting block 4, then is transferred to the dispersion carrying that bearing seat 15 carries out load, is realized by the mechanism
The carrying of bi-directional axial load improves the bearing strength and stability of electric pushrod.
By setting positioning shaft shoulder 11 and block 7, by gasket 1, thrust bearing 1, supporting block 4,25 and of thrust bearing
Gasket 26 is fixedly clamped between positioning shaft shoulder 11 and block 7, forms overall structure, and block 7 is consolidated by the way of being threadedly coupled
It is scheduled in carrying axle 18, facilitates installation.
Axially rotation limitation between transmission gear 9 and carrying axle 18.Carrying axle 18 passes through the flat position of axis or connecting key and transmission
Axially rotation limitation between gear 9.Pass through the axial movement limitation of clamping screw 10 between transmission gear 9 and carrying axle 18.Locking
The axis hole that bolt 10 passes through transmission gear 9 is connect with the end-face helical of carrying axle 18, and clamping screw 10 will be driven by bolt head
Gear 9 moves axially limitation.
When installation, first gasket 1, thrust bearing 1, supporting block 4, thrust bearing 25 and gasket 26 are sequentially sleeved at
In carrying axle 18, one end carries out axially position by positioning shaft shoulder 11, and block 7 is tightened in carrying axle 18, is holding by the other end
It carries axis 18 to continue to be arranged axle sleeve 1 and transmission gear 9 far from one end of supporting block 4, and in the end installation locking of carrying axle 18
Transmission gear 9 is carried out axial compression positioning by the bolt head on clamping screw 10 by bolt 10；And transmission gear 9 and carrying
The limitation axially rotated between axis 18 using the flat position of axis or connecting key, prevents transmission gear 9, clamping screw 10 and block 7
It generates rotation because of vibration to loosen, axle sleeve 1, transmission gear 9,10 collective effect of clamping screw hold out against block 7, anti-stop block
7 occur loosening and screw rod 1 being caused to generate axial play in the electric pushrod course of work, further improve electric pushrod
Operation stability.
Axle sleeve 2 12 is arranged between thrust bearing 1 and carrying axle 18, axle sleeve 2 12 is fixedly connected with gasket 1.It pushes away
Axle sleeve 3 13 is arranged between power bearing 25 and carrying axle 18, axle sleeve 3 13 is fixedly connected with gasket 26.
It can be reduced thrust bearing 1, thrust axis by setting axle sleeve 2 12 and axle sleeve 3 13, axle sleeve 2 12 and axle sleeve 3 13
The frictional dissipation between 25 and carrying axle 18 is held, excessive wear is prevented and causes push rod fluctuation of service, axle sleeve 2 12, axle sleeve
3 13 hardness be less than thrust bearing 1, thrust bearing 25 and carrying axle 18 hardness, frictional dissipation often occur hardness compared with
On low axle sleeve, axle sleeve need to only be replaced after axle sleeve abrasion, extend carrying axle 18, thrust bearing 1, thrust bearing two
5 service life, reduces later maintenance cost.
The preferable specific embodiment of the above, only the utility model, but the protection scope of the utility model is not
It is confined to this, anyone skilled in the art is within the technical scope disclosed by the utility model, practical according to this
Novel technical solution and its utility model design are subject to equivalent substitution or change, should all cover the protection model in the utility model
Within enclosing.
Claims (8)
1. a kind of integration screw rod bearing structure, including the screw rod for driving inner tube (17) to move axially relative to outer tube (16)
(1), it is characterised in that: be fixedly connected with bearing seat (15) on the outer tube (16), one end of the screw rod (1) is connected with and silk
The coaxial carrying axle (18) of bar (1), is provided with positioning shaft shoulder (11), the carrying between the screw rod (1) and carrying axle (18)
Axis (18) is arranged in the inside of bearing seat (15), and the outside of the carrying axle (18) is successively arranged with gasket one (2), thrust bearing
One (3), supporting block (4), thrust bearing two (5), gasket two (6) and block (7), the gasket one (2) is far from supporting block (4)
Side is positioned by positioning shaft shoulder (11) and carrying axle (18), and the block (7), which is threadably secured, is connected to carrying axle (18)
On, the supporting block (4) is fixedly connected with bearing seat (15), and one end on the carrying axle (18) far from supporting block (4) is arranged
There are axle sleeve one (8) and transmission gear (9), the transmission gear (9) is fixedly connected with carrying axle (18), the axle sleeve one (8)
Outer cover is equipped with deep groove ball bearing (14), and the deep groove ball bearing (14) is mounted on the inside of bearing seat (15).
2. a kind of integrated screw rod bearing structure according to claim 1, which is characterized in that the transmission gear (9) with
Axially rotation limitation between carrying axle (18).
3. a kind of integrated screw rod bearing structure according to claim 2, which is characterized in that the carrying axle (18) passes through
Axially rotation limitation between the flat position of axis or connecting key and transmission gear (9).
4. a kind of integrated screw rod bearing structure according to claim 1, which is characterized in that the transmission gear (9) with
Pass through clamping screw (10) axial movement limitation between carrying axle (18).
5. a kind of integrated screw rod bearing structure according to claim 4, which is characterized in that the clamping screw (10) is worn
The axis hole for crossing transmission gear (9) is connect with the end-face helical of carrying axle (18), and the clamping screw (10) will be passed by bolt head
Moving gear (9) moves axially limitation.
6. a kind of integrated screw rod bearing structure according to claim 1, which is characterized in that the supporting block (4) with hold
Seat (15) are carried to be integrated.
7. a kind of integrated screw rod bearing structure according to claim 1, which is characterized in that the thrust bearing one (3)
Axle sleeve two (12) is arranged between carrying axle (18), the axle sleeve two (12) is fixedly connected with gasket one (2).
8. a kind of integrated screw rod bearing structure according to claim 1, which is characterized in that the thrust bearing two (5)
Axle sleeve three (13) is arranged between carrying axle (18), the axle sleeve three (13) is fixedly connected with gasket two (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821498669.8U CN208845668U (en) | 2018-09-13 | 2018-09-13 | A kind of integration screw rod bearing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821498669.8U CN208845668U (en) | 2018-09-13 | 2018-09-13 | A kind of integration screw rod bearing structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208845668U true CN208845668U (en) | 2019-05-10 |
Family
ID=66372859
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821498669.8U Expired - Fee Related CN208845668U (en) | 2018-09-13 | 2018-09-13 | A kind of integration screw rod bearing structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208845668U (en) |
-
2018
- 2018-09-13 CN CN201821498669.8U patent/CN208845668U/en not_active Expired - Fee Related
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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: 20190510 Termination date: 20210913 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |