CN110360305A - Speed change gear - Google Patents
Speed change gear Download PDFInfo
- Publication number
- CN110360305A CN110360305A CN201810322338.7A CN201810322338A CN110360305A CN 110360305 A CN110360305 A CN 110360305A CN 201810322338 A CN201810322338 A CN 201810322338A CN 110360305 A CN110360305 A CN 110360305A
- Authority
- CN
- China
- Prior art keywords
- gear
- speed change
- bearing
- shell
- grease
- Prior art date
- 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.)
- Pending
Links
- 230000008859 change Effects 0.000 title claims abstract description 46
- 239000004519 grease Substances 0.000 claims abstract description 55
- 238000007789 sealing Methods 0.000 claims abstract description 24
- 230000000694 effects Effects 0.000 abstract description 14
- 230000009467 reduction Effects 0.000 description 5
- 239000000314 lubricant Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000010790 dilution Methods 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 230000008569 process 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
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/02—Gearboxes; Mounting gearing therein
- F16H57/029—Gearboxes; Mounting gearing therein characterised by means for sealing the gearboxes, e.g. to improve airtightness
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Details Of Gearings (AREA)
Abstract
The present invention relates to speed change gears.The speed change gear includes shell, bearing, bearing seal structure, gear shaft, gear and oil resistance structure.Bearing seal structure is for sealing bearing.Gear shaft is connected by the inner wall of bearing and shell.Gear is mounted on gear shaft, and is located in shell, and gear is used for speed change, and gap is formed between gear and shell.Oil resistance structure setting is on the flow path of the intracorporal grease of shell, to hinder grease to flow to bearing seal structure by gap.When flow path when grease in said gear speed change gear is along leakage, oil resistance structure first can hinder amount of grease to flow through gap.Even if there is a small amount of grease to fail to be prevented by oil resistance structure, its leakage also can be further prevented by bearing seal structure.And then the oil-leakage-prevention effect of speed change gear can be improved.
Description
Technical field
The present invention relates to gearbox technical fields, more particularly to speed change gear.
Background technique
Speed-changing gear box is widely used in the machines such as angle mill, electric hammer, polishing machine.Usually storage has one in speed-changing gear box
Quantitatively it is used for the grease of oilgear.After machine starts, a large amount of heat can be generated, so that pressure is got higher in oil pocket, meeting simultaneously
Grease is diluted, a large amount of grease will be flowed out from the oil pocket of gearbox, until flowing through bearing, leaked out, be leaked to from bearing
Machine outer surface, to corrode machine.
Traditional speed-changing gear box, which only relies on bearing seal structure, prevents oil leak, and oil-leakage-prevention effect is poor, it is difficult to guard against 0# and
The grease of the following trade mark and the 1# grease after high temperature dilution.
Summary of the invention
Based on this, it is necessary to for the problem of traditional gearbox oil-leakage-prevention effect difference, provide a kind of improved gear change
Speed variator.
A kind of speed change gear, comprising:
Shell；
Bearing；
Bearing seal structure, for sealing the bearing；
Gear shaft is connect by the bearing with the inner wall of the shell；
Gear is mounted on the gear shaft, and is located in the shell, and the gear is used for speed change, the gear
Gap is formed between the shell；And
Oil resistance structure is arranged on the flow path of the intracorporal grease of the shell, described to hinder the grease to pass through
Gap flows to the bearing seal structure.
When flow path when grease in said gear speed change gear is along leakage, oil resistance structure being capable of first obstruction
Grease is divided to flow through gap.Even if there is a small amount of grease to fail to be prevented by oil resistance structure, can also be carried out by bearing seal structure into
One step prevents its leakage.And then the oil-leakage-prevention effect of speed change gear can be improved.Oil-leakage-prevention is effect improved, and grease leakage subtracts
It is few, to can also improve the lubricant effect of gear, improve gear life.
The shell includes cabinet and case lid in one of the embodiments,；
The bearing includes the first bearing for being installed on the case lid；
The gear shaft includes the driven gear shaft for being supported in the first bearing；
The gear includes the driven gear being mounted on the driven gear shaft；
The bearing seal structure includes the first bearing sealing structure being arranged in case lid, for sealing the first axle
It holds；
The first gap is formed between the driven gear and the case lid；
The oil resistance structure can hinder the intracorporal grease of the shell to flow to first bearing sealing by first gap
Structure.
The oil resistance structure includes the first groove in one of the embodiments, is provided with the case of first gap location
On lid inner wall.
The oil resistance structure further includes the first protrusion in one of the embodiments, and the first protrusion setting exists
On the cover wall, and first protrusion is axially toward the driven gear protrusion in the driven gear；
On the direction close to the driven gear shaft, first groove and first protrusion are along driven gear shaft
Radial direction set gradually.
Inner wall of first protrusion close to first groove in one of the embodiments,.
The inner wall of first protrusion and first groove is integrally formed in one of the embodiments,.
Offer the second groove on second inner wall in one of the embodiments, first protrusion with it is described
Second groove is adapted.
In one of the embodiments, size of second gap in the axial direction of the driven gear be 0.2mm~
0.6mm。
The gear further includes driving gear in one of the embodiments, the driving gear be bevel gear, it is described from
Moving gear is roller gear, and the axis of the driving gear is vertical with the axis of the driven gear.
The quantity of the oil resistance structure is multiple in one of the embodiments, and multiple oil resistance structures are set gradually
On the flow path of the intracorporal grease of the shell.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the speed change gear of first embodiment；
Fig. 2 is the enlarged drawing of A shown in Fig. 1；
Fig. 3 is the first lug boss of second embodiment and the matching relationship schematic diagram of the second groove.
Related elements reference numeral in figure is as follows:
100, speed change gear 101, the first gap 102, the first groove
103, the side wall of the second gap 101a, cover wall 102a, the first groove
111, driving gear 112, driven gear
121, case lid 122, cabinet
130, oil pocket 141, driven gear shaft 151, first bearing
161, first bearing sealing structure 170, the first protrusion
204, the second groove
270, the first protrusion
Specific embodiment
In order to make the foregoing objectives, features and advantages of the present invention clearer and more comprehensible, with reference to the accompanying drawing to the present invention
Specific embodiment be described in detail.
With reference to Fig. 1, speed change gear 100 includes shell, bearing, bearing seal structure, gear shaft, gear and oil resistance
Structure.
Specifically, it is designed according to the actuation types of gear, which can be planetary gear reduction box,
It is also possible to pinion-endless screw reduction gearbox, planet gear speed increaser, pinion-endless screw speed increaser etc..It is set according to the shape type of gear
Meter, the speed change gear 100 can also be roller gear speed changer, conical gear speed changer and circular cone-roller gear speed change
Device etc..
Gear is mounted on gear shaft.Gear is used for speed change.Specifically, gear includes driving gear 111 and driven gear
112, driving gear 111 is engaged with driven gear 112, to realize speed changing function.Gears and gears axis is respectively positioned in shell.
In other embodiments, gear can also cooperate with worm screw and carry out speed change.
Gear shaft is connected by the inner wall of bearing and shell.Specifically, the inner ring of gear shaft and bearing connects.Outside bearing
The connection of the inner wall of wall and shell.
Bearing seal structure can be sealing ring, sealing cover or other sealing structures etc..Bearing seal structure is for sealing
Bearing.
Gap is formed between gear and shell.There is the oil for oilgear in the oil pocket 130 of speed change gear 100
Rouge.Oil resistance structure setting is arranged before bearing seal structure on the flow path of grease.Speed change gear 100
At work, if grease is flowed out from oil pocket 130, it is close that oil resistance structure can hinder the intracorporal grease of shell by gap to flow to bearing
Seal structure.
When flow path when grease in said gear speed change gear 100 is along leakage, oil resistance structure can first hinder
Amount of grease is hindered to flow through gap.Even if there is a small amount of grease to fail to be prevented by oil resistance structure, also can by bearing seal structure into
Row further prevents its leakage.And then the oil-leakage-prevention effect of speed change gear 100 can be improved.Oil-leakage-prevention is effect improved, oil
Rouge leakage is reduced, to can also improve the lubricant effect of gear, improves gear life.
Further, the speed change gear 100 of the present embodiment is reduction gearbox.Shell includes case lid 121 and cabinet 122.
Gear shaft includes driven gear shaft 141.Driven gear 112 is mounted on driven gear shaft 141.Bearing includes first bearing 151.
Driven gear shaft 141 is connect by first bearing 151 with the inner wall of case lid 121.Bearing seal structure includes first bearing sealing
Structure 161.First bearing sealing structure 161 is for sealing first bearing 151.Is formed between driven gear 112 and case lid 121
One gap 101.Oil resistance structure can hinder the intracorporal grease of shell to flow to first bearing sealing structure 161 from the first gap 101.
Specifically, when the flow path when grease in speed change gear 100 is along leakage flows through the first gap 101, resistance
Oily structure can first hinder amount of grease to flow through the first gap 101.Even if there is a small amount of grease to fail to be prevented by oil resistance structure, also can
Its leakage is further enough prevented by first bearing sealing structure 161.And then the anti-of speed change gear 100 can be improved
Oil leak effect.Oil-leakage-prevention is effect improved, and grease leakage is reduced, to can also improve the lubricant effect of gear, improves gear life.
It please refers to Fig. 1 and combines Fig. 2, further, cover wall 101a is an inner wall in the first gap 101.First
Another inner wall in gap 101 is opposite with cover wall 101a.Another inner wall in the first gap 101 is driven gear 112
Surface.Oil resistance structure includes the first groove 102, and the first groove 102 is provided on cover wall 101a.
Specifically, the gap due to the first gap 101 between case lid 121 and driven gear 112.When grease is from oil pocket
130 flowings reach the first gaps 101, and when the first groove 102 of process, then grease can be fallen into the first groove 102, so as to
Enough reduce the first gap 101 of grease circulation.The grease fallen into the first groove 102 cannot also flow to first bearing sealing structure
161.Even if there is a small amount of grease to flow through the first gap 101, first bearing sealing structure 161 can also prevent its leakage.
Further, referring to FIG. 2, oil resistance structure further includes the first protrusion 170.In first protrusion 170 and case lid
Wall 101a is fixedly connected.First protrusion 170 is protruded in the driven gear 112 that is axially toward of driven gear 112.
Specifically, it can be observed from fig. 2 that due to the first protrusion 170 driven gear 112 axis up towards driven gear
112 protrusions, form the second gap 103 between the first protrusion 170 and another inner wall in the first gap 101.Wherein, between second
Axial direction in driven gear shaft 141 of the size d1 in the axial direction of driven gear shaft 141 of gap 103 less than the first gap 101
On size.That is, the first protrusion 170 has exceeded cover wall 101a upwards as viewed from the direction of Fig. 2.
On the direction close to driven gear shaft 141, the first groove 102 and the first protrusion 170 are along driven gear shaft 141
Radial direction set gradually.After flowing to the first gap 101 from oil pocket 130 to, grease, the first groove 102 is first passed through, then reaches the
One protrusion 170.
Since the first protrusion 170 exceeds cover wall 101a upwards.To when amount of grease is since flow velocity is too fast or stream
When measuring the reasons such as excessive to fail to fall into the first groove 102, and directly flowing to the first protrusion 170, the first protrusion 170 can
Grease is formed and is stopped, grease can then impinge upon on the first protrusion 170, so that grease sheds pressure, after shedding pressure
Grease can then fall into the first groove 102, stop flow forward, and then can reduce grease flowing first bearing sealing structure
161.Even if there is a small amount of grease to flow through the first gap 101, first bearing sealing structure 161 can also prevent its leakage.
Referring to FIG. 2, in one of the embodiments, the first protrusion 170 close to the first groove 102 side wall 102a,
It is easier to fall into the first groove 102 to shed the grease after pressure, and then is more easier to prevent grease from revealing.
Specifically, as shown in Fig. 2, the side wall 102a of the first protrusion 170 and the first groove 102 can be integrated molding
, consequently facilitating processing.The side wall 102a of first protrusion 170 and the first groove 102 can be integrally molded so as a block baffle, should
Baffle and gear box cover front cover 122, which enclose, to be set and forms the first groove 102.
In other embodiments, the first protrusion 170 can also be one piece of individual baffle, and the first protrusion 170
It is enclosed with reduction gearbox front cover 122 and sets and form the first groove 102.Before being respectively reduction gearbox to the two side walls of the first groove 102
The surface on the surface of lid 122 and the first protrusion 170.
Referring to FIG. 2, size d1 of second gap 102 in the axial direction of driven gear shaft 141 is 0.2~0.6mm.Specifically
Ground, size d1 can be 0.2mm, 0.3mm, 0.4mm, 0.5mm, 0.6mm etc..Due to the gap size d1 distance very
It is small, if grease enters in the second gap 102, it will form high pressure oil film, which can prevent the advance of subsequent grease,
So as to further prevent grease to reveal.
By the way that the design of the first groove 102, the first protrusion 140 and the size d1 to the second gap 102 is arranged, formed
Multistage anti-oil structure, can guard against most grease, even if there is a small amount of grease to continue to flow out the second gap 102, first bearing
Sealing structure 161 can also guard against these greases, so that the oil-leakage-prevention effect of speed change gear 100 obtains very big change
It is kind.
Further, the quantity of oil resistance structure is multiple.Multiple oil resistance structures are successively set on the stream of the intracorporal grease of shell
On dynamic path.Specifically, the quantity of oil resistance structure can be two, three etc..That is, the quantity of the first groove can be
It is multiple.The quantity of first protrusion can be multiple.Multiple oil resistance structures then more efficiently can stop grease to be revealed, thus
The oil-leakage-prevention effect of speed change gear 100 can further be improved.
Further, with reference to Fig. 1, gear further includes driving gear 111.Driving gear 111 is bevel gear.Driven gear
112 be roller gear.The axis of driving gear 111 is vertical with the axis of driven gear 112.Axial orthogonal cone-cylinder
The design of gear can transmit the movement between two concurrent aceses and power.
Second embodiment provides a kind of speed change gear.The speed change gear of second embodiment and first embodiment
The structure of speed change gear is essentially identical.Referring to FIG. 3, the speed change gear of second embodiment and the tooth of first embodiment
The difference of wheel speed change gear is, the second groove 204 is offered on gear, and the first protrusion 270 is suitable with 204 phase of the second groove
Match.To which the first protrusion 270 can limit mutually with the second groove 204, to be conducive to opposite between gear and shell
Stablize position.
Wherein, the second gap can be the bottom wall and/or the second groove 204 of the first protrusion 270 and the second groove 204
Gap between side wall.
Each technical characteristic of embodiment described above can be combined arbitrarily, for simplicity of description, not to above-mentioned reality
It applies all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, all should be considered as described in this specification.
The embodiments described above only express several embodiments of the present invention, and the description thereof is more specific and detailed, but simultaneously
It cannot therefore be construed as limiting the scope of the patent.It should be pointed out that coming for those of ordinary skill in the art
It says, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to protection of the invention
Range.Therefore, the scope of protection of the patent of the invention shall be subject to the appended claims.
Claims (10)
1. a kind of speed change gear characterized by comprising
Shell；
Bearing；
Bearing seal structure, for sealing the bearing；
Gear shaft is connect by the bearing with the inner wall of the shell；
Gear is mounted on the gear shaft, and is located in the shell, and the gear is used for speed change, the gear and institute
It states and forms gap between shell；And
Oil resistance structure is arranged on the flow path of the intracorporal grease of the shell, to hinder the grease to pass through the gap
Flow to the bearing seal structure.
2. speed change gear according to claim 1, which is characterized in that
The shell includes cabinet and case lid；
The bearing includes the first bearing for being installed on the case lid；
The gear shaft includes the driven gear shaft for being supported in the first bearing；
The gear includes the driven gear being mounted on the driven gear shaft；
The bearing seal structure includes the first bearing sealing structure being arranged in case lid, for sealing the first bearing；
The first gap is formed between the driven gear and the case lid；
The oil resistance structure can hinder the intracorporal grease of the shell to flow to first bearing sealing structure by first gap.
3. speed change gear according to claim 2, which is characterized in that
The oil resistance structure includes the first groove, is provided on the cover wall of first gap location.
4. speed change gear according to claim 3, which is characterized in that
The oil resistance structure further includes the first protrusion, and first protrusion is arranged on the cover wall, and described
First protrusion is axially toward the driven gear protrusion the driven gear；
On the direction close to the driven gear shaft, the diameter of first groove and first protrusion along driven gear shaft
To setting gradually.
5. speed change gear according to claim 4, which is characterized in that first protrusion is recessed close to described first
The inner wall of slot.
6. speed change gear according to claim 4 or 5, which is characterized in that first protrusion and described first
The inner wall of groove is integrally formed.
7. speed change gear according to claim 4, which is characterized in that it is recessed to offer second on second inner wall
Slot, first protrusion are adapted with second groove.
8. speed change gear according to claim 4, which is characterized in that second gap is in the driven gear
Size in axial direction is 0.2mm~0.6mm.
9. speed change gear according to claim 4, which is characterized in that the gear further includes driving gear, described
Driving gear is bevel gear, and the driven gear is roller gear, the axis of the axis of the driving gear and the driven gear
Line is vertical.
10. speed change gear according to claim 1, which is characterized in that the quantity of the oil resistance structure be it is multiple, it is more
A oil resistance structure is successively set on the flow path of the intracorporal grease of the shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810322338.7A CN110360305A (en) | 2018-04-11 | 2018-04-11 | Speed change gear |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810322338.7A CN110360305A (en) | 2018-04-11 | 2018-04-11 | Speed change gear |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110360305A true CN110360305A (en) | 2019-10-22 |
Family
ID=68214531
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810322338.7A Pending CN110360305A (en) | 2018-04-11 | 2018-04-11 | Speed change gear |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110360305A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0261374A1 (en) * | 1986-09-18 | 1988-03-30 | Robert Bosch Gmbh | Slip-ring felt seal for hand machine-tools |
| DE19944564A1 (en) * | 1999-09-17 | 2001-03-22 | Bosch Gmbh Robert | Hand-held machine tool has click nut whose change ring can be operated by hand when working spindle is stationary to axially loosen clamping flange and release clamped tool |
| CN203585281U (en) * | 2013-10-15 | 2014-05-07 | 山东科技大学 | Sealing device used for speed reducer of vertical type slurry mixer |
| CN204171998U (en) * | 2014-09-17 | 2015-02-25 | 浙江皇冠电动工具制造有限公司 | There is the electric tool of dustproof construction |
| CN104776163A (en) * | 2015-04-16 | 2015-07-15 | 凤阳县鼎盛矿山设备有限公司 | Vertical shaft type two-stage cylindrical gear reducer |
| CN107299982A (en) * | 2017-08-30 | 2017-10-27 | 沃德传动（天津）股份有限公司 | Air-Cooling Island reductor integral type dries well construction |
| CN208487187U (en) * | 2018-04-11 | 2019-02-12 | 苏州宝时得电动工具有限公司 | Speed change gear |
-
2018
- 2018-04-11 CN CN201810322338.7A patent/CN110360305A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0261374A1 (en) * | 1986-09-18 | 1988-03-30 | Robert Bosch Gmbh | Slip-ring felt seal for hand machine-tools |
| DE19944564A1 (en) * | 1999-09-17 | 2001-03-22 | Bosch Gmbh Robert | Hand-held machine tool has click nut whose change ring can be operated by hand when working spindle is stationary to axially loosen clamping flange and release clamped tool |
| CN203585281U (en) * | 2013-10-15 | 2014-05-07 | 山东科技大学 | Sealing device used for speed reducer of vertical type slurry mixer |
| CN204171998U (en) * | 2014-09-17 | 2015-02-25 | 浙江皇冠电动工具制造有限公司 | There is the electric tool of dustproof construction |
| CN104776163A (en) * | 2015-04-16 | 2015-07-15 | 凤阳县鼎盛矿山设备有限公司 | Vertical shaft type two-stage cylindrical gear reducer |
| CN107299982A (en) * | 2017-08-30 | 2017-10-27 | 沃德传动（天津）股份有限公司 | Air-Cooling Island reductor integral type dries well construction |
| CN208487187U (en) * | 2018-04-11 | 2019-02-12 | 苏州宝时得电动工具有限公司 | Speed change gear |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP3892892B1 (en) | Oil lubrication mechanism for front bearing of water-cooled motor and motor driving assembly | |
| CN105209282A (en) | Axle assembly | |
| CN106122308A (en) | A kind of clutch apparatus for automobile hybrid power variator | |
| US9885412B2 (en) | Power transfer device | |
| CN208487187U (en) | Speed change gear | |
| US10760613B2 (en) | Rotary device | |
| CN104500715A (en) | Lubrication branch of planetary gear train | |
| US10208849B2 (en) | Mechanical gear transmission | |
| JP6244772B2 (en) | Hybrid vehicle drive device | |
| KR20160085723A (en) | Epicyclic gearing | |
| CN110397740B (en) | High-speed spiral sealing device | |
| JP2003526305A (en) | Improved bearing insulation | |
| CN110360305A (en) | Speed change gear | |
| CN207879864U (en) | A kind of numerically-controlled machine tool gear-box main motor shaft bearing lubrication structure | |
| CN211175240U (en) | Planetary gear structure with lubricating effect | |
| CN209430737U (en) | A kind of new energy pure electric vehicle reduction gearbox lubricating system | |
| WO2019112584A1 (en) | Driveline unit with internal lubrication system | |
| CN202327034U (en) | Bearing cooling and lubricating structure for high-speed shaft at output end of transfer case | |
| CN203488688U (en) | Oil gathering cover of gear drive mechanism | |
| WO2014116162A1 (en) | Arrangement for lubricating an axle gear differential | |
| CN112539281A (en) | Oil slinger with tapered roller bearing | |
| CN206017675U (en) | A kind of wind turbine gearbox lubrication uses pipe axle | |
| CN216666404U (en) | Vertical self-lubricating gear with strong thermal stability for headstock | |
| CN209414573U (en) | Speed change gear | |
| JP2016033404A (en) | Lubrication structure of differential gear |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |