CN207195563U - A kind of gear reduction unit - Google Patents
A kind of gear reduction unit Download PDFInfo
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- CN207195563U CN207195563U CN201721078420.7U CN201721078420U CN207195563U CN 207195563 U CN207195563 U CN 207195563U CN 201721078420 U CN201721078420 U CN 201721078420U CN 207195563 U CN207195563 U CN 207195563U
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- bearing
- gear
- annular
- installation cavity
- reduction unit
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Abstract
The utility model provides a kind of gear reduction unit, belongs to field of mechanical technique.It is big that it solves existing gear reduction unit operation noise, it is easy to wear the problem of.This gear reduction unit, including housing, input gear axle and output shaft, input gear axle has gear part and gear part engages with the output gear on output shaft, housing has the installation cavity through shell one end, the outer end of input gear axle is located at the opening of installation cavity, the inner is in installation cavity, offered in input gear axle for wearing the axis hole being connected with machine shaft, bearing one and bearing two are additionally provided with installation cavity, the outer ring of bearing one and bearing two is each attached on the inwall of installation cavity, the outer end of input gear axle is fixed through inner ring of the bearing in the lump with bearing one, the inner is fixed through bearing two and with the inner ring of bearing two, gear part is between bearing one and bearing two.This gear reduction unit will not shake and offset, and stability is preferable, reduce the noise of operation, reduce abrasion.
Description
Technical field
The utility model belongs to field of mechanical technique, is related to a kind of gear reduction unit.
Background technology
Gear reduction unit is the independent type closed driving device between prime mover and working machine, for reducing rotating speed and increase
Torque, to meet need of work.Gear reduction unit mainly by machine shaft drive input gear rotation, so as to drive with it is defeated
Enter the rotation of the output gear of gear engagement, realize the function of reducing rotating speed and cover plate direction.
Existing gear reduction unit includes casing, input gear axle and output shaft, and input gear axle the inner is located at casing
Interior to have input gear and engaged with the output gear on output shaft, outer end is stretched out outside housing, and is set at the port of housing
Bearing and input gear axis connection.Existing gear reduction unit when in use, it is necessary to by shaft coupling by input gear axle with electricity
Machine rotating shaft connects, and the setting of shaft coupling adds length, so as to add the whole decelerator space shared with motor installation, and
It is inner that input gear and output are directly set and the outer end of input gear axle is connected at the port of housing by bearing with housing
Gear engages, and due to that can have certain gap after being connected for the ease of the outer end of connection, input gear axle with machine shaft,
Therefore, during operation, the inner of input gear axle easily shakes, and is axially producing play, is radially shifting,
The noise of operation is big, easy to wear.
The content of the invention
The purpose of this utility model is above mentioned problem be present for existing technology, it is proposed that a kind of gear reduction unit, this
Utility model technical problem to be solved is：The noise of operation how is reduced, reduces abrasion.
The purpose of this utility model can be realized by following technical proposal：A kind of gear reduction unit, including housing, input
Gear shaft and output shaft, the output shaft are provided with output gear, the input gear axle there is gear part and gear part with it is defeated
Go out gear engagement, it is characterised in that the housing has installation cavity and installation cavity runs through one end of housing, the input gear axle
Outer end be located at the opening of installation cavity, the inner in installation cavity, offered in the input gear axle for and motor turn
Axle wears the axis hole of connection, and bearing one and bearing two are additionally provided with the installation cavity, and the outer ring of the bearing one and bearing two is equal
It is fixed on the inwall of installation cavity, the outer end of the input gear axle is fixed through inner ring of the bearing in the lump with bearing one, inner
Fixed through bearing two and with the inner ring of bearing two, the gear part is between bearing one and bearing two.
The input gear axle of this gear reduction unit is integrally located in the installation cavity of housing, and outer end is located at the opening of installation cavity
Locate, offer axis hole in input gear axle, the rotating shaft of motor, which can directly be worn, to be connected in the axis hole, reduces machine shaft
Connecting length between input gear axle, so as to reduce whole required installing space.Meanwhile the outer end of input gear axle
Fixed respectively by bearing one and bearing two with the inner, and by the position of gear part be arranged to positioned at bearing one and bearing two it
Between, during operation, even if trickle gap be present between axis hole on machine shaft and input gear axle, due to input
The inner of gear shaft is axially and radially being limited, therefore will not be shaken and be offset, and stability is preferable, reduces fortune
Capable noise, reduce abrasion.
In above-mentioned gear reduction unit, the size of the bearing one is more than the size of bearing two.The rotating shaft of motor is to connect
The outer end of input gear axle is connected on, therefore the requirement to the bonding strength of input gear axle outer end is relatively high, by bearing one
Size set larger, disclosure satisfy that the demand of bonding strength, ensure stability, and the size of bearing two is set relative
It is smaller, while inner bonding strength demand can be ensured, required installing space is also reduced, is ensured integrally-built compact
Property.
In above-mentioned gear reduction unit, annular groove one, the annular groove are offered on the inwall of the installation cavity
Annular retaining ring one is arranged with one, the annular retaining ring one protrudes one end end face that the annular groove one is resisted against bearing one
On, have on the inwall of the installation cavity and abutted against against step, the outer perimeter section of the other end of bearing one on step,
Inner round portion is resisted against on the end face of gear part, and annular groove two, the annular are further opened with the inwall of the installation cavity
Annular retaining ring two is arranged with groove two, the annular retaining ring two protrudes one that the annular groove two is resisted against the bearing two
Hold on end face, the other end inner round portion of the bearing two is resisted against on the other end of gear part.It is spacing in ring in bearing one
Between shape back-up ring one and the end face of gear part, bearing two is limited between annular retaining ring two and the other end of gear part,
So that integrated connection stability is more preferable, it will not shake and offset during operation, reduce noise, deeper abrasion.And
And bearing one and bearing two are inner round portion with gear part against not interfering with the normal rotation of gear part again.
In above-mentioned gear reduction unit, both ends end face relative with bearing one and bearing two respectively is equal in the gear part
For plane, bearing one and bearing two branch is resisted against in the both ends of the surface.The both ends of the surface of gear part are plane, the He of bearing one
Bearing two is born against in the both ends of the surface, and stickiness is preferable, will not be shifted and be rocked, and stability is preferable, reduces operation
Noise, reduce abrasion.
In above-mentioned gear reduction unit, there is protrusion respectively on the outer end of the input gear axle and inner lateral wall
Annular gear along one and annular gear along two, the gear part positioned at annular gear along one and annular gear along between one, the gear part
Both ends respectively with annular gear along one and annular gear there is gap along between two, the inner ring of the bearing one is arranged and is fixed on ring
Shape is kept off along one periphery wall, and the inner ring of the bearing two is arranged and is fixed on annular gear along two periphery wall.Pass through annular
Gear is along one and the annular design kept off along two, while the both ends of gear part and annular gear are kept off along one and annular between being respectively provided with along between two
Gap, bearing one and bearing two be arranged respectively is fixed on annular gear along one and annular gear along two periphery wall, and respectively with gear
The both ends of the surface in portion are against so that bearing one, gear part and annular gear are along between one and bearing two, gear part and annular are kept off
The small chamber of a sealing is respectively formed between along two, stability is good, reduce further the noise of operation, reduces abrasion.
Compared with prior art, this gear reduction unit has advantages below：
1st, the outer end of input gear axle and the inner are fixed by bearing one and bearing two respectively, and the position of gear part is set
It is set between bearing one and bearing two and both ends of the surface is respectively with bearing one and bearing two against during operation, i.e.,
Make trickle gap be present between the axis hole on machine shaft and input gear axle, due to input gear axle it is inner axially and
Radially it is limited, therefore will not shakes and offset, stability is preferable, reduces the noise of operation, reduces abrasion.
2nd, axis hole is offered in input gear axle, the rotating shaft of motor, which can directly be worn, to be connected in the axis hole, is reduced
Connecting length between machine shaft and input gear axle, so as to reduce whole required installing space.
3rd, bearing one, gear part and annular gear are along between one and bearing two, gear part and annular gear are along equal shape between two
Into the small chamber of a sealing, stability is good, reduce further the noise of operation, reduces abrasion.
Brief description of the drawings
Fig. 1 is the structural representation of this gear reduction unit.
Fig. 2 is the enlarged drawing at A in Fig. 1.
Fig. 3 is the enlarged drawing at B in Fig. 1.
In figure, 1, housing；1a, installation cavity；1b, against step；2nd, input gear axle；2a, gear part；2b, axis hole；2c、
Annular is kept off along one；2d, annular are kept off along two；3rd, output shaft；4th, output gear；5th, bearing one；6th, bearing two；7th, annular retaining ring one；
8th, annular retaining ring two.
Embodiment
It is specific embodiment of the utility model and with reference to accompanying drawing below, the technical solution of the utility model is made further
Description, but the utility model is not limited to these embodiments.
As shown in figure 1, this gear reduction unit, including housing 1, input gear axle 2 and output shaft 3, output shaft 3 are provided with defeated
Go out gear 4, input gear axle 2 has gear part 2a and gear part 2a engages with output gear 4.
Housing 1 has installation cavity 1a and installation cavity 1a runs through one end of housing 1, and the outer end of input gear axle 2 is positioned at installation
Chamber 1a opening, the inner offer for wearing the axle being connected with machine shaft in installation cavity 1a in input gear axle 2
Hole 2b, the rotating shaft of motor, which can directly be worn, to be connected in axis hole 2b, is reduced between machine shaft and input gear axle 2
Connecting length, so as to reduce whole required installing space.
It is additionally provided with bearing 1 and bearing 26 in installation cavity 1a, the outer ring of bearing 1 and bearing 26 is each attached to installation
On chamber 1a inwall, the outer end of input gear axle 2 is fixed through bearing 1 and with the inner ring of bearing 1, and the inner passes through bearing two
6 and fixed with the inner ring of bearing 26, gear part 2a is between bearing 1 and bearing 26, during operation, even if electric
Trickle gap be present between axis hole 2b in machine rotating shaft and input gear axle 2, due to input gear axle 2 it is inner axially and
Radially it is limited, therefore will not shakes and offset, stability is preferable, reduces the noise of operation, reduces abrasion.
Further say, annular groove one is offered on installation cavity 1a inwall, annular gear is arranged with annular groove one
1 are enclosed, annular retaining ring 1 protrudes annular groove one and is resisted against on one end end face of bearing 1, has on installation cavity 1a inwall
Against step 1b, the outer perimeter section of the other end of bearing 1 is abutted against on step 1b, and inner round portion is resisted against gear part 2a's
On end face.Annular groove two is further opened with installation cavity 1a inwall, annular retaining ring 28, ring are arranged with annular groove two
Shape back-up ring 28 protrudes annular groove two and is resisted against on one end end face of bearing 26, the other end inner round portion of bearing 26 against
On gear part 2a other end.Both ends end face relative with bearing 1 and bearing 26 respectively is flat on gear part 2a
Face, bearing 1 and bearing 26 branch are resisted against in the both ends of the surface.
The size of bearing 1 is more than the size of bearing 26, and the rotating shaft of motor is to be connected to the outer end of input gear axle 2,
Therefore the requirement to the bonding strength of the outer end of input gear axle 2 is relatively high, can by the larger of the size setting of bearing 1
Meet the needs of bonding strength, ensure stability, and the size of bearing 26 is set it is relatively small, can ensure it is inner even
While connecing strength demand, required installing space is also reduced, ensures integrally-built compactedness.
As shown in Figures 2 and 3, there is the annular gear edge protruded respectively on the outer end of input gear axle 2 and inner lateral wall
One 2c and annular gear along two 2d, gear part 2a positioned at annular gear along a 2c and annular gear along between a 2c, gear part 2a both ends
It is arranged along a 2c and annular gear along gap, the inner ring of bearing 1 is respectively provided between two 2d with annular gear and is fixed on annular gear edge
On one 2c periphery wall, the inner ring of bearing 26 is arranged and is fixed on annular gear along two 2d periphery wall, so that bearing one
5th, gear part 2a and annular gear are along between a 2c and bearing 26, gear part 2a and annular gear are along being respectively formed one between two 2d
The small chamber of sealing, stability is good, reduce further the noise of operation, reduces abrasion.
Specific embodiment described herein is only to the utility model spirit explanation for example.The utility model institute
Category those skilled in the art can make various modifications or supplement to described specific embodiment or using similar
Mode substitute, but without departing from spirit of the present utility model or surmount scope defined in appended claims.
Claims (5)
1. a kind of gear reduction unit, including housing (1), input gear axle (2) and output shaft (3), the output shaft (3) are provided with
Output gear (4), the input gear axle (2) has gear part (2a) and gear part (2a) engages with output gear (4), and it is special
Sign is that the housing (1) has installation cavity (1a) and installation cavity (1a) runs through one end of housing (1), the input gear axle
(2) outer end is located at the opening of installation cavity (1a), and the inner opens up in installation cavity (1a) on the input gear axle (2)
Have for wearing the axis hole being connected (2b) with machine shaft, bearing one (5) and bearing two are additionally provided with the installation cavity (1a)
(6), the outer ring of the bearing one (5) and bearing two (6) is each attached on installation cavity (1a) inwall, the input gear axle
(2) outer end through bearing one (5) and being fixed with the inner ring of bearing one (5), the inner through bearing two (6) and with bearing two (6)
Inner ring fix, the gear part (2a) is between bearing one (5) and bearing two (6).
2. gear reduction unit according to claim 1, it is characterised in that the size of the bearing one (5) is more than bearing two
(6) size.
3. gear reduction unit according to claim 1 or 2, it is characterised in that opened up on the inwall of the installation cavity (1a)
There is annular groove one, annular retaining ring one (7) is arranged with the annular groove one, the annular retaining ring one (7) protrudes the ring
Connected in star one is resisted against on one end end face of bearing one (5), is had on the inwall of the installation cavity (1a) against step (1b), institute
The outer perimeter section for stating bearing one (5) other end is abutted against on step (1b), and inner round portion is resisted against the one of gear part (2a)
On end face, annular groove two is further opened with the inwall of the installation cavity (1a), annular gear is arranged with the annular groove two
Two (8) are enclosed, the annular retaining ring two (8) is protruded the annular groove two and is resisted against on one end end face of the bearing two (6), institute
The other end inner round portion for stating bearing two (6) is resisted against on gear part (2a) other end.
4. gear reduction unit according to claim 3, it is characterised in that on the gear part (2a) respectively with bearing one
(5) and the relative both ends end face of bearing two (6) is plane, and the bearing one (5) and bearing two (6) branch are resisted against the both ends
On face.
5. gear reduction unit according to claim 4, it is characterised in that the outer end and the inner of the input gear axle (2)
Lateral wall on there is the annular gear of protrusion respectively along one (2c) and annular gear along two (2d), the gear part (2a) is positioned at annular
Along one (2c) and annular gear along between one (2c), the both ends of the gear part (2a) are kept off along one (2c) and annular gear with annular respectively
Along having gap between two (2d), the inner ring of the bearing one (5) is arranged and is fixed on periphery wall of the annular gear along one (2c) gear
On, the inner ring of the bearing two (6) is arranged and is fixed on annular gear along two (2d) periphery wall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721078420.7U CN207195563U (en) | 2017-08-25 | 2017-08-25 | A kind of gear reduction unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721078420.7U CN207195563U (en) | 2017-08-25 | 2017-08-25 | A kind of gear reduction unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207195563U true CN207195563U (en) | 2018-04-06 |
Family
ID=61795499
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721078420.7U Active CN207195563U (en) | 2017-08-25 | 2017-08-25 | A kind of gear reduction unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207195563U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111336237A (en) * | 2020-04-02 | 2020-06-26 | 浙江通宇变速机械股份有限公司 | Speed reducer |
-
2017
- 2017-08-25 CN CN201721078420.7U patent/CN207195563U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111336237A (en) * | 2020-04-02 | 2020-06-26 | 浙江通宇变速机械股份有限公司 | Speed reducer |
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