CN202674255U - Gear reducer - Google Patents
Gear reducer Download PDFInfo
- Publication number
- CN202674255U CN202674255U CN 201220315898 CN201220315898U CN202674255U CN 202674255 U CN202674255 U CN 202674255U CN 201220315898 CN201220315898 CN 201220315898 CN 201220315898 U CN201220315898 U CN 201220315898U CN 202674255 U CN202674255 U CN 202674255U
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- CN
- China
- Prior art keywords
- driven gear
- gear
- shaft
- tooth axle
- center tooth
- 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.)
- Expired - Fee Related
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- Gear Transmission (AREA)
- Gears, Cams (AREA)
Abstract
The utility model belongs to gear reducers, and in particular relates to a gear reducer which is convenient to machine and easy to detach. The gear reducer comprises a reducer body, wherein the reducer body is provided with a high-speed driven gear and an intermediate gear shaft; tapered roller bearings for positioning the intermediate gear shaft are arranged at two ends of the intermediate gear shaft; the intermediate gear shaft is provided with a bearing guard and a driven gear mounting guard; the driven gear mounting guard is a tapered shaft; the tapered shaft is provided with a flat key; a threaded hole is formed in a shaft head of the intermediate gear shaft; the high-speed driven gear is provided with a mounting hole and is arranged on the tapered shaft through the mounting hole; and the mounting hole has the conical degree and is matched with the tapered shaft of the intermediate gear shaft. A mode for connection and installation of the high-speed driven gear and an intermediate gear is improved; moreover, the high-speed driven gear is convenient to assemble and disassemble owing to cantilever type installation and taper fit; and the gear reducer can well meet constantly changing requirements of markets and consumers, and production of reducers is greatly facilitated.
Description
Technical field
The utility model belongs to the toothed gearing electric motor class, especially a kind of easy to process, easy gear reduction unit of dismounting.
Background technique
Toothed gearing electric motor is that speed reducer connects with motor straight acting flange formula, motor shaft is as the electromechanical integration transmission device of speed reducer input shaft, because its compact structure, efficient is high, volume is little, the advantages such as stable drive are widely used in the automatic production industries such as chemical industry, metallurgy, lifting, weaving.As shown in Figure 1, what present domestic gear reduction unit high speed level driven gear adopted is to connect with center tooth axle extended spot by cylindrical hole, extends spindle nose at the center tooth axle simultaneously and installs the rigidity deficiency that deep groove ball bearing prevents that driven gear from causing because cantilever is long additional.But caused thus following deficiency and defective:
1, difficulty of processing increases: because the center tooth axle is affected by above description scheme design, need three bearings of assembling, cause that three corresponding bearing holes need guarantee concentricity and tolerance of size on the casing, otherwise produced easily locating effect, affect operating life, and three necessary time processing moulding of bearing hole can't be done secondary clamping processing, the above requirement of guarantee.
2, the installing/dismounting difficulty increases: because the center tooth axle adopts three points location, and driven gear is installed in the middle of the two bearings, so need when installing two bearings and driven gear and setting sleeve while centering could be installed.And if the client is when needing throw-over to compare, the dismounting driven gear then needs from the slow speed turbine stage gear disassembling, at last could dismantle jack shaft and driven gear, and in the installation and removal process, if each gear cooperates tension, may cause part injury, and cooperate pine, may cause behind the part stress location inaccurate.
The model utility content
The technical problems to be solved in the utility model is: based on the problems referred to above, a kind of the connect mounting type of high speed level driven gear with intermediate gear that improved is provided, with respect to prior art, saved a bearing, prevented that the situation of location from appearring in the center tooth axle, also reduced the gear reduction unit of casing difficulty of processing.
The technological scheme that its technical problem that solves the utility model adopts is: a kind of gear reduction unit, comprise the speed reducer body, described speed reducer body has at a high speed level driven gear and center tooth axle, the two ends of center tooth axle are provided with the tapered roller bearing of location center tooth axle, have bearing guard and driven gear on the center tooth axle shelves are installed, it is taper shaft that driven gear is installed shelves, has flat key on the taper shaft, the spindle nose of center tooth axle offers tapped hole, described high speed level driven gear is provided with the mounting hole that is installed on the taper shaft, mounting hole also has tapering, cooperates with the taper shaft of center tooth axle.
The end face of described taper shaft is provided with spring bearer plate and the socket head screw of axial compression and fixing at a high speed level driven gear, and spring bearer plate has micro-deformation that socket head screw is had the pretension effect after compression.
Further, the material of spring bearer plate is spring steel, spring steel has high fatigue strength, under the load repeated action, have very long working life, and enough toughness and plasticity arranged, can prevent suddenly brittle failure under impact force action, socket head screw matches with the tapped hole of center tooth axle spindle nose.
The tapering of described taper shaft and mounting hole is 1:20, i.e. every millimeter of the variation of taper shaft external diameter reduces 1/20, and every millimeter of the variation of mounting hole internal diameter increases by 1/20, guarantees closely cooperating of taper shaft and mounting hole.
Described center tooth axle is the 20CrMnTi alloyed steel with the material of high speed level driven gear, the comprehensive mechanical property of 20CrMnTi alloyed steel and low-temperature impact toughness are good, have good wear resistance and resistance to flexure after the carburizing, the material of flat key is No. 45 carbon steel, and quenching rear surface hardness is high.
The beneficial effects of the utility model are: the utility model has improved the connect mounting type of high speed level driven gear with intermediate gear, with respect to prior art, saved a bearing, prevented that the situation of location from appearring in the center tooth axle, also reduced the casing difficulty of processing, and because the installation of high speed level driven gear is taper fit, after having end face to compress, the tapering surface of contact can produce micro-deformation, also the auxiliary function that has strengthened the moment of torsion transmission; Simultaneously because cantilevered installation and taper fit have made things convenient for the at a high speed installation and removal of level driven gear, that speed reducer change speed ratio or speed reducer are done preassembly and all obtained greatly improving, can better adapt to the requirement that market and client constantly change, for the production of speed reducer brought greatly convenient.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further specified.
Fig. 1 is that the high speed level driven gear of prior art middle gear speed reducer is installed the structural representation that connects.
Fig. 2 is that high speed level driven gear of the present utility model is installed the structural representation that connects.
Fig. 3 is the schematic representation that high speed level driven gear of the present utility model is installed connecting mode.
Among the figure: 1. level driven gear, 2. center tooth axle, 3. deep groove ball bearing, 4. tapered roller bearing, 5. taper shaft, 6. flat key, 7. mounting hole, 8. spring bearer plate, 9. socket head screw at a high speed.
Embodiment
By reference to the accompanying drawings the utility model is described in further detail now.These accompanying drawings are the schematic representation of simplification, basic structure of the present utility model only is described in a schematic way, so it only show the formation relevant with the utility model.
As shown in Figure 1, what present domestic gear reduction unit high speed level driven gear 1 adopted is to connect with center tooth axle 2 extended spots by cylindrical hole, extends spindle noses at center tooth axle 2 simultaneously and installs the rigidity deficiency that deep groove ball bearing 3 prevents that driven gear 1 from causing because cantilever is long additional.
Shown in Fig. 2～3, a kind of gear reduction unit, comprise the speed reducer body, the speed reducer body has at a high speed level driven gear 1 and center tooth axle 2, the two ends of center tooth axle 2 are provided with the tapered roller bearing 4 of location center tooth axle 2, have bearing guard and driven gear on the center tooth axle 2 shelves are installed, it is taper shaft 5 that driven gear is installed shelves, has flat key 6 on the taper shaft 5, the spindle nose of center tooth axle 2 offers tapped hole, level driven gear 1 is provided with the mounting hole 7 that is installed on the taper shaft 5 at a high speed, and mounting hole 7 also has tapering, cooperates with the taper shaft 5 of center tooth axle 2.The end face of taper shaft 5 is provided with spring bearer plate 8 and the socket head screw 9 of axial compression and fixing at a high speed level driven gear 1, and spring bearer plate 8 has micro-deformation that socket head screw 9 is had the pretension effect after compression.
Change the three bearings location of the center tooth axle 2 among Fig. 1 into the two bearings location, adopt tapered roller bearing 4 to replace original deep groove ball bearing 3, can bear larger radial force and axial force, shorten simultaneously driven gear and shelves are installed to the distance of deep groove ball bearing 3, increase the at a high speed rigidity of level driven gear 1, increase the two bearings span from, increase and support span, center tooth axle 2 rigidity and smoothness of operation are provided.
The driven gear of center tooth axle 2 is installed shelves change 1:20 taper shaft 5 into, fine grinding cylinder adds processes with bearing guard man-hour, guarantees that driven gear installs that a shelves circumference is beated and the form and position tolerance required precision such as concentricity.Center tooth axle 2 spindle noses are beaten tapped hole, as high speed level driven gear 1 axially locating are installed and use.
The mounting hole 7 of level driven gear 1 adopts the 1:20 tapered hole at a high speed, cooperate with the taper shaft 5 of center tooth axle 2, adding man-hour mounting hole 7 needs precision to form, guarantee degree of finish and the conicity in hole, then doing roll flute plug location with mounting hole 7 uses, the roll flute fine finishing flank of tooth has guaranteed the Geometrical Tolerance Principle such as the circular runout of the flank of tooth and mounting hole 7 and concentricity.
Cooperate after needing mounting hole 7 and the taper shaft 5 of center tooth axle 2 cleans up when level driven gear 1 being installed at a high speed, cooperate surface of contact need satisfy 90%, flat key 6 is installed is simultaneously used as the moment of torsion transmission.The end face of taper shaft 5 adopts spring bearer plate 8 and socket head screw 9 axial compression and fixing at a high speed level driven gear 1, and spring bearer plate 8 has micro-deformation that socket head screw 9 is had the pretension effect after compression.
Take above-mentioned foundation desirable embodiment of the present utility model as enlightenment, by above-mentioned description, the relevant staff can in the scope that does not depart from this model utility technological thought, carry out various change and modification fully.The technical scope of this model utility is not limited to the content on the specification, must determine its technical scope according to the claim scope.
Claims (5)
1. gear reduction unit, it is characterized in that: comprise the speed reducer body, described speed reducer body has at a high speed level driven gear (1) and center tooth axle (2), the two ends of center tooth axle (2) are provided with the tapered roller bearing (4) of location center tooth axle (2), have bearing guard and driven gear on the center tooth axle (2) shelves are installed, it is taper shaft (5) that driven gear is installed shelves, has flat key (6) on the taper shaft (5), the spindle nose of center tooth axle (2) offers tapped hole, described high speed level driven gear (1) is provided with the mounting hole (7) that is installed on the taper shaft (5), mounting hole (7) also has tapering, cooperates with the taper shaft (5) of center tooth axle (2).
2. a kind of gear reduction unit according to claim 1 is characterized in that: the end face of described taper shaft (5) is provided with axial compression and fixing at a high speed spring bearer plate (8) and the socket head screw (9) of level driven gear (1).
3. a kind of gear reduction unit according to claim 2, it is characterized in that: the material of spring bearer plate (8) is spring steel, socket head screw (9) matches with the tapped hole of center tooth axle (2) spindle nose.
4. a kind of gear reduction unit according to claim 1, it is characterized in that: the tapering of described taper shaft (5) and mounting hole (7) is 1:20.
5. a kind of gear reduction unit according to claim 1 is characterized in that: described center tooth axle (2) is the 20CrMnTi alloyed steel with the material of level driven gear (1) at a high speed, and the material of flat key (6) is No. 45 carbon steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220315898 CN202674255U (en) | 2012-06-30 | 2012-06-30 | Gear reducer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220315898 CN202674255U (en) | 2012-06-30 | 2012-06-30 | Gear reducer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202674255U true CN202674255U (en) | 2013-01-16 |
Family
ID=47495161
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220315898 Expired - Fee Related CN202674255U (en) | 2012-06-30 | 2012-06-30 | Gear reducer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202674255U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105521669A (en) * | 2014-09-30 | 2016-04-27 | 江苏鑫伟环保设备制造有限公司 | Special vibration gearbox for dust remover |
-
2012
- 2012-06-30 CN CN 201220315898 patent/CN202674255U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105521669A (en) * | 2014-09-30 | 2016-04-27 | 江苏鑫伟环保设备制造有限公司 | Special vibration gearbox for dust remover |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130116 Termination date: 20130630 |