CN104675967A - Electric vehicle and reduction gear box thereof - Google Patents
Electric vehicle and reduction gear box thereof Download PDFInfo
- Publication number
- CN104675967A CN104675967A CN201510067028.1A CN201510067028A CN104675967A CN 104675967 A CN104675967 A CN 104675967A CN 201510067028 A CN201510067028 A CN 201510067028A CN 104675967 A CN104675967 A CN 104675967A
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- conical bearing
- input shaft
- speed reducer
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- 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
- F16H57/023—Mounting or installation of gears or shafts in the gearboxes, e.g. methods or means for assembly
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- 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
- F16H57/021—Shaft support structures, e.g. partition walls, bearing eyes, casing walls or covers with bearings
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- 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
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- 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
- F16H57/04—Features relating to lubrication or cooling or heating
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- 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
- F16H57/12—Arrangements for adjusting or for taking-up backlash not provided for elsewhere
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Retarders (AREA)
- Motor Power Transmission Devices (AREA)
Abstract
The invention discloses an electric vehicle and a reduction gear box thereof. The top part of a box body of the reduction gear box is provided with an installing basin which is used for installing a driving motor, a longitudinal installing hole is formed in the middle part of the bottom part of the installing basin, the longitudinal installing hole is positioned above a speed reducing space and penetrates to the speed reducing space, two corresponding first horizontal installing holes are respectively formed in the left side wall and the right side wall of the speed reducing space by the box body, and two corresponding second horizontal installing holes are respectively formed in the left side wall and the right side wall of a differential space by the box body; an input shaft is arranged in the longitudinal installing hole through a cone bearing A, a cone bearing B and a bearing frame, a driving bevel gear arranged at the lower end of the input shaft stretches into the speed reducing space and is in mesh transmission with a driven bevel gear, the driven bevel gear is fixedly arranged on a gear shaft in a sleeving way, two ends of the gear shaft are respectively arranged in the box body through a cone bearing C and a bearing seat, the gear shaft is provided with a gear part, and the gear part is in mesh transmission with a big gear on a differential assembly. According to the technical scheme, the driving motor is vertically arranged, the structure is reasonable, and the assembling and the debugging are convenient.
Description
Technical field
The present invention relates to a kind of electric vehicle and speed reducer thereof.
Background technique
Electric vehicle due to noiseless, be not vented, overhaul simple, processing ease and hauling ability is superior and be widely used, but because electric vehicle needs a lot of power supply to provide energy, thus electric vehicle is relative to fuel combustion vehicle, and the space utilization of vehicle is very crucial.The driving system of electric vehicle comprises vehicle bridge, wheel, vehicle frame and suspension, drive motor via speed reducer, ransaxle by transmission of power to wheel, in prior art, drive motor is generally horizontal setting (namely motor shaft is level), structure disclosed in the patent documentations such as CN102518780A, CN202944154U, CN202753777U, CN202753775U, motor shaft in parallel with axle half shafts, the fairly simple and ease of assembly debugging of the drive mechanism of such speed reducer.But the layout of the horizontal setting of drive motor can take the larger plane space of vehicle bottom, have a strong impact on electric vehicle especially effective utilization of the confined space on some minor works vehicles.
Publication number be CN201472155U patent document discloses a kind of independent suspension electric vehicle rear axle reduction box, comprise casing, the both sides of casing are respectively equipped with left installation bracket and right mounting bracket, the front portion of casing is provided with motor land, left installation bracket is provided with output shaft, right mounting bracket is provided with output shaft, and left output shaft is provided with three grades of driven gears; Right output shaft is provided with differential mechanism, and be provided with left half axle gear and right axle shaft gear and a bearing pin in differential mechanism, left output shaft is connected with the central authorities of bearing pin with the inner of right output shaft, and bearing pin is provided with two planetary pinions; Motor land is provided with input shaft, input shaft is provided with one-level driving gear, secondary driven gear and three grades of driving gears, spline shaft is provided with in casing, this axle is provided with one-level driven gear and secondary driving gear, one-level driving gear engages with one-level driven gear, secondary driving gear engages with secondary driven gear, and three grades of driving gears engage with three grades of driven gears.In said structure, although differential mechanism part and retarder parts lay respectively in two cabinet spaces, the lubricating oil in these two cabinet spaces can intercommunication, and this structure is still adopt the horizontal setting of drive motor.Further, this structure assembly and adjustment is inconvenient, and the gap adjustment of umbrella gear transmission is also inconvenient.
Summary of the invention
In order to solve above-mentioned technical problem, an object of the present invention is to provide a kind of speed reducer adopting the vertical setting of drive motor, thus improves the space utilization of electric vehicle, and rational in infrastructure, and ease of assembly is debugged.
Another object of the present invention is to provide a kind of electric vehicle, adopts above-mentioned speed reducer.
To achieve the above object, present invention employs following technological scheme:
A kind of speed reducer, comprise casing, the inner space of described casing is divided into differential mechanism space and deceleration space, through with deceleration space before differential mechanism space, for rear end cover is closed after differential mechanism space, for front cover is closed before deceleration space, casing top is provided with the mounting pot of installing drive motor, a longitudinal mounting hole is provided with in the middle of bottom this mounting pot, this longitudinal mounting hole site is through to space of slowing down above deceleration space, described casing offers the first corresponding horizontal mounting hole respectively on the left and right sides wall in deceleration space, described casing offers the second corresponding horizontal mounting hole respectively on the left and right sides wall in differential mechanism space, one input shaft is arranged in longitudinal mounting hole by conical bearing A, conical bearing B and bearing bracket stand, the active bevel gear part of input shaft lower end stretch into deceleration space and with driven bevel pinion engagement driving, driven bevel pinion is fixed by socket on tooth axle, tooth axle two ends are arranged in casing respectively by conical bearing C and bearing support, tooth axle is provided with gear part, gearwheel engagement driving on this gear part and differential assembly, driven bevel pinion and tooth axle are positioned at deceleration space, and differential assembly is positioned at differential mechanism space, wherein, described bearing bracket stand is fixed in longitudinal mounting hole, input shaft is arranged in the axis hole of bearing bracket stand by the conical bearing A that is oppositely arranged up and down and conical bearing B, sheathed nut, conical bearing A and conical bearing B on input shaft, inward flange is provided with in the axis hole of bearing bracket stand, the outer ring of conical bearing A and the outer ring of conical bearing B are respectively from clamping inward flange up and down, nut is threaded with input shaft, and nut and initiatively bevel gear part are respectively from the inner ring of the inner ring and conical bearing B that clamp conical bearing A up and down, the two ends sheathed conical bearing C respectively of described tooth axle, inner ring and the tooth axle of conical bearing C offset, the outer ring of conical bearing C is fixed on the inner of bearing support, and two, left and right bearing support is arranged in two the first horizontal mounting holes in left and right respectively, and bearing support is threaded with the first horizontal mounting hole.
As preferably, the upper end of described input shaft is provided with spline and is connected with the output shaft of drive motor by spline housing, and drive motor is arranged on above mounting pot.
As preferably, described input shaft is in vertically arranging up and down, and the output axle shaft of described tooth axle and differential assembly is all arranged in left and right horizontal.
As preferably, the active bevel gear part of described input shaft lower end is higher than the axis of the output axle shaft of differential assembly, and the axis of the output axle shaft of differential assembly is higher than the axis of tooth axle.
As preferably, the outer end circumference of described bearing support is provided with multiple locating tooth, and casing is provided with and can engages with these locating tooths thus the toothed member that rotates of restrictive axes bearing.
As preferably, described bearing bracket stand comprises cylindrical shell, and the top of cylindrical shell is provided with outward flange, the axis hole bottom of cylindrical shell is provided with inward flange, the sidewall of cylindrical shell has opening, and the cylindrical shell of bearing bracket stand is when inserting in longitudinal mounting hole, and outward flange to be shelved on bottom mounting pot and to be fixed by fastening piece.
As preferably, have a second channel bottom mounting pot, second channel is through to space of slowing down from the top down, mounting pot sidewall is installed a pipe joint, and such housing interior volume passes through first passage, second channel, the cavity of mounting pot, pipe joint exhaust.
As preferably, described input shaft is arranged with oil sealing, oil sealing to be arranged between input shaft and inward flange and to implement oil sealing between conical bearing A and conical bearing B; The sidewall of described longitudinal mounting hole has first passage, first passage is communicated with differential mechanism space and longitudinal mounting hole, the sidewall of described bearing bracket stand is provided with the opening corresponding with described first passage, and, this opening is not less than the outer ring of conical bearing A, described casing internal fixtion one lubricating cup, lubricating cup is positioned at first passage near side, differential mechanism space.
Further preferably, the height of described lubricating cup is not higher than the top edge height of the gearwheel of differential assembly.
A kind of electric vehicle, comprises a kind of speed reducer described above.
The present invention is owing to have employed above technological scheme, drive motor adopts vertical setting, input shaft and the T-shaped layout of ransaxle output shaft, substantially reduce the volume of speed reducer and drive motor and shared plane space, contribute to the Appropriate application in electric vehicle space.And rational in infrastructure, ease of assembly is debugged.
Accompanying drawing explanation
Fig. 1 is the outline drawing of speed reducer of the present invention;
Fig. 2 is the structural representation of speed reducer of the present invention;
Fig. 3 is the A-A sectional view (translator) of Fig. 1;
Fig. 4 is the B-B sectional view of Fig. 1;
Fig. 5 is the plan view of Fig. 1;
Fig. 6 is the structural representation of differential assembly of the present invention;
Fig. 7 a is planetary structural representation in prior art;
Fig. 7 b is the planetary structural representation of the present invention;
Fig. 8 a is the structural representation of differential gear in prior art;
Fig. 8 b is the structural representation of differential gear of the present invention;
Fig. 9 is the structural representation of speed reducer of the present invention and ransaxle;
Figure 10 is the stereogram of speed reducer of the present invention;
Figure 11 is one of stereogram of Gearbox of the present invention;
Figure 12 is the stereogram two of Gearbox of the present invention;
Figure 13 is the three-dimensional cutaway view of Gearbox of the present invention;
Figure 14 is the three-dimensional cutaway view of bearing bracket stand of the present invention.
Embodiment
Be described below in detail embodiments of the invention, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has element that is identical or similar functions from start to finish.Be exemplary below by the embodiment be described with reference to the drawings, be intended to for explaining the present invention, and can not limitation of the present invention be interpreted as.
In describing the invention, the present invention and simplified characterization for convenience of description, with define shown in Fig. 1 "front", "rear", " on ", D score, wherein, " front " is the right of product shown in Fig. 1, and " afterwards " is the left of product shown in Fig. 1, " on " be the top of product shown in Fig. 1, D score is the below of product shown in Fig. 1, outwards and is inwardly divided into " left side " " right side " with vertical paper, define here " on " D score is consistent with the orientation up and down of electric vehicle material object.Other terms as " " center ", " longitudinal direction ", " transverse direction ", " length ", " width ", " thickness ", " vertically ", " level ", " top ", " end " " interior ", " clockwise ", " counterclockwise " etc. instruction orientation or position relationship be based on orientation shown in the drawings or position relationship; be only the present invention for convenience of description and simplified characterization; instead of instruction or imply indication device or element must have specific orientation, with specific azimuth configuration and operation, therefore can not be interpreted as limitation of the present invention.
In addition, term " first ", " second " only for describing object, and can not be interpreted as instruction or hint relative importance or imply the quantity indicating indicated technical characteristics.Thus, be limited with " first ", the feature of " second " can express or impliedly comprise one or more these features.In describing the invention, except as otherwise noted, the implication of " multiple " is two or more, unless otherwise clear and definite restriction.
In the present invention, unless otherwise clearly defined and limited, the term such as term " installation ", " being connected ", " connection ", " fixing " should be interpreted broadly, and such as, can be fixedly connected with, also can be removably connect, or connect integratedly; Can be mechanical connection, also can be electrical connection; Can be directly be connected, also indirectly can be connected by intermediary, can be the connection of two element internals.For the ordinary skill in the art, above-mentioned term concrete meaning in the present invention can be understood as the case may be.
In the present invention, unless otherwise clearly defined and limited, fisrt feature second feature it " on " or D score can comprise the first and second features and directly contact, also can comprise the first and second features and not be directly contact but by the other characterisation contact between them.And, fisrt feature second feature " on ", " top " and " above " comprise fisrt feature directly over second feature and oblique upper, or only represent that fisrt feature level height is higher than second feature.Fisrt feature second feature " under ", " below " and " below " comprise fisrt feature immediately below second feature and tiltedly below, or only represent that fisrt feature level height is less than second feature.
A kind of speed reducer as shown in Fig. 1 to 5, comprise casing 2, and the front cover 4 be fixed on casing 2 and rear end cover 3, in described casing 2, driven bevel pinion 13 is installed, tooth axle 17 and differential assembly 14, one input shaft 8 is by conical bearing A10, conical bearing B12 and bearing bracket stand 6 are arranged on casing 2 top, input shaft 8 upper end is for connecting the output shaft of drive motor 18, the lower end of input shaft 8 is provided with initiatively bevel gear part 82, initiatively bevel gear part 82 and driven bevel pinion 13 engagement driving, driven bevel pinion 13 is fixed by socket on tooth axle 17, tooth axle 17 two ends are arranged in casing 2 respectively by conical bearing C16 and bearing support 15, tooth axle 17 is provided with gear part 171, this gear part 171 and gearwheel 142 engagement driving on differential assembly 14, wherein, the axis of input shaft 8 and the axial vertical of tooth axle 17, the axis of tooth axle 17 and the parallel to an axis of differential assembly 14 output axle shaft, input shaft 8 is positioned at above tooth axle 17.Like this, drive motor adopts vertical setting, and input shaft 8 and the T-shaped layout of ransaxle output shaft, substantially reduce the volume of speed reducer and drive motor and shared plane space, contribute to the Appropriate application in electric vehicle space.
In the present embodiment, described input shaft 8 is in vertically arranging up and down, and the output axle shaft of described tooth axle 17 and differential assembly 14 is all arranged in left and right horizontal.
As Figure 11, Figure 12, shown in Figure 13, the inner space of described casing 2 is divided into differential mechanism space 201 and deceleration space 202, differential mechanism space 201 is through with deceleration space 202 above, differential mechanism space 201 is rear uncovered for what differential assembly can be supplied to pass through below, uncoveredly afterwards to be closed by rear end cover 3, deceleration space 202 is front uncovered for what driven bevel pinion 13 and tooth axle 17 can be supplied to pass through above, before uncoveredly to be closed by front cover 4, casing 2 top is provided with the mounting pot 203 of installing drive motor 18, a longitudinal mounting hole 208 is provided with in the middle of bottom this mounting pot 203, this longitudinal mounting hole 208 to be positioned at above deceleration space 202 and through to deceleration space 202, the sidewall of this longitudinal mounting hole 208 has first passage 209, first passage 209 is communicated with differential mechanism space 201 and longitudinal mounting hole 208, described casing 2 offers the first corresponding horizontal mounting hole 207 respectively on the left and right sides wall in deceleration space 202, described casing 2 offers the second corresponding horizontal mounting hole 205 respectively on the left and right sides wall in differential mechanism space 201.During assembling, input shaft 8 is first arranged in bearing bracket stand 6, and then bearing bracket stand 6 inserts in longitudinal mounting hole 208 also fixing from top to bottom, and the active bevel gear part 82 of input shaft 8 lower end stretches into deceleration space 202; Driven bevel pinion 13 is first fixed on tooth axle 17, then tooth axle 17 is in the past uncovered puts into deceleration space 202, difference installation shaft bearing 15 in the first horizontal mounting hole 207 of two, left and right, tooth axle 17 two ends suit conical bearing C is also arranged on bearing support 15, is adjusted the back lash of initiatively bevel gear part 82 and driven bevel pinion 13 by turn bearing support 15; Differential assembly 14 uncoveredly puts into differential mechanism space 201 from rear.Rational in infrastructure like this, assembly and adjustment is convenient.
As Fig. 2, Fig. 3, shown in Figure 14, described bearing bracket stand 6 is fixed in longitudinal mounting hole 208, input shaft 8 is arranged in the axis hole 603 of bearing bracket stand 6 by the conical bearing A10 that is oppositely arranged up and down and conical bearing B12, the upper end of input shaft 8 is provided with spline 81 and is connected by the output shaft of spline housing 7 with drive motor 18, the lower end of input shaft 8 is active bevel gear part 82, sheathed nut 9 on input shaft 8, conical bearing A10, oil sealing 11 and conical bearing B12, inward flange 604 is provided with in the axis hole 603 of bearing bracket stand 6, the outer ring of conical bearing A10 and the outer ring of conical bearing B12 are respectively from clamping inward flange 604 up and down, nut 9 is threaded with input shaft 8, nut 9 and initiatively bevel gear part 82 are respectively from the inner ring of the inner ring and conical bearing B12 that clamp conical bearing A10 up and down, oil sealing 11 to be arranged between input shaft 8 and inward flange 604 and to implement oil sealing between conical bearing A10 and conical bearing B12, the sidewall of bearing bracket stand 6 is provided with the opening 605 corresponding with described first passage 209, and, this opening 605 is not less than the outer ring of conical bearing A10, described casing 2 internal fixtion one lubricating cup 5, lubricating cup 5 is positioned at first passage 209 near side, differential mechanism space 201, lubricant oil gets rid of in lubricating cup 5 by the gearwheel 142 of such differential assembly 14 in rotation process, the lubricant oil that lubricating cup 5 is collected is via first passage 209, in the axis hole that opening 605 enters bearing bracket stand 6, conical bearing A10 is lubricated.In order to ensure the oil-collecting effect of lubricating cup 5, the height of lubricating cup 5 is not higher than the top edge height of the gearwheel 142 in differential assembly 14.In order to ensure that lubricating oil flow avoids deposition, further preferably, higher than bottom first passage 209 bottom lubricating cup 5, higher than bottom opening 605 bottom first passage 209, higher than the top, outer ring of conical bearing A10 bottom opening 605.In order to ensure lubrication effect and smooth in exhaust, further preferably, in casing 2, lubricant oil liquid level height is near the output axle shaft of differential assembly 14, and liquid level is not less than tooth axle 17 and does not flood the active bevel gear part 82 of input shaft 8 lower end.Preferably as shown in Figure 2, the active bevel gear part 82 of input shaft 8 lower end is higher than the axis of the output axle shaft of differential assembly 14, and the axis of the output axle shaft of differential assembly 14 is higher than the axis of tooth axle 17, and this spline structure is more reasonable, is convenient to lubrication.The lubricant oil that conical bearing B12 is got rid of up in rotation process by driven bevel pinion 13 lubricates.Lubricant oil is injected by the oil hole 204 at casing top, oil hole 204 is closed by plunger at ordinary times, in order to ensure that speed reducer inner space is vented, especially the exhaust in deceleration space 202, a second channel 206 is had bottom mounting pot 203, second channel 206 is through to deceleration space 202 from the top down, mounting pot 203 sidewall is installed a pipe joint 1, and such casing 2 inner space is vented by the cavity of first passage 209, second channel 206, mounting pot 203, pipe joint 1.
As shown in figure 14, described bearing bracket stand 6 comprises cylindrical shell 601, the top of cylindrical shell 601 is provided with outward flange 602, axis hole 603 bottom of cylindrical shell 601 is provided with inward flange 604, the sidewall of cylindrical shell 601 has opening 605, the cylindrical shell 601 of bearing bracket stand 6 is when inserting in longitudinal mounting hole 208, and outward flange 602 to be shelved on bottom mounting pot 203 and to be fixed by fastening piece.
As Fig. 3, shown in Figure 10, the two ends sheathed conical bearing C16 respectively of described tooth axle 17, inner ring and the tooth axle 17 of conical bearing C16 offset, the outer ring of conical bearing C16 is fixed on the inner of bearing support 15, two, left and right bearing support 15 is arranged in two the first horizontal mounting holes 207 in left and right respectively, bearing support 15 is threaded with the first horizontal mounting hole 207, the outer end circumference of bearing support 15 is provided with multiple locating tooth, engaged with these locating tooths by the toothed member 19 be fixed on casing 2 like this, can restrictive axes bearing 15 rotate thus the reliable position of positioning bearing seat 15 in the first horizontal mounting hole 207, so not only ease of assembly, and conveniently can adjust the back lash of umbrella gear transmission.
As shown in Fig. 4, Fig. 6, described differential assembly 14 comprises differential casing 141, is fixed with gearwheel 142 outside differential casing 141, is provided with planetary pinion 143 and differential gear 144 in differential casing 141.
Planetary pinion 143 of the prior art and differential gear 144, as shown in Fig. 7 a, Fig. 8 a, the outside of taper wheel body is provided with teeth, and structure is not strengthened in the junction of teeth and taper wheel body.In order to increase intensity and the working life of planetary pinion 143 and differential gear 144, as shown in Fig. 7 b, Fig. 8 b, we are provided with reinforcement structure in the junction of teeth and taper wheel body: the bigger diameter end of the taper wheel body 1431 of planetary pinion 143 is provided with radially outward extending radial extension part 1433, and this radial extension part 1433 covers the end face of teeth 1432 and both are connected as a single entity; The bigger diameter end of the taper wheel body 1441 of differential gear 144 is provided with radially outward extending radial extension part 1443, this radial extension part 1443 covers the end face of teeth 1442 and both are connected as a single entity, the miner diameter end of the taper wheel body 1441 of differential gear 144 is provided with along its axially extended axial extension part 1444, and this axial extension part 1444 covers the inner side surface of teeth 1442 and both are connected as a single entity.
A kind of electric vehicle, comprise above-mentioned speed reducer 100, armshaft assembly 200, output axle shaft 300, brake assemblies 400 and vehicle wheel component 500, drive motor 18 is arranged on mounting pot 203 top of Gearbox, as shown in Figure 9, one end of armshaft assembly 200 to be inserted in the second horizontal mounting hole 205 of above-mentioned speed reducer 100 and is connected with differential assembly by bearing 145, the other end installing wheel assembly 500 of armshaft assembly 200 and brake assemblies 400, output axle shaft 300 is located in armshaft assembly 200, one end of output axle shaft 300 is fixedly connected with the differential gear 144 in above-mentioned speed reducer 100, the other end of output axle shaft 300 is connected with vehicle wheel component 500 and brake assemblies 400.
In the description of this specification, specific features, structure, material or feature that the description of reference term " embodiment ", " some embodiments ", " example ", " concrete example " or " some examples " etc. means to describe in conjunction with this embodiment or example are contained at least one embodiment of the present invention or example.In this manual, identical embodiment or example are not necessarily referred to the schematic representation of above-mentioned term.And the specific features of description, structure, material or feature can combine in an appropriate manner in any one or more embodiment or example.
Although illustrate and describe embodiments of the invention above, be understandable that, above-described embodiment is exemplary, can not be interpreted as limitation of the present invention, those of ordinary skill in the art can change above-described embodiment within the scope of the invention when not departing from principle of the present invention and aim, revising, replacing and modification.
Claims (10)
1. a speed reducer, comprise casing (2), it is characterized in that, the inner space of described casing (2) is divided into differential mechanism space (201) and deceleration space (202), differential mechanism space (201) is through with deceleration space (202) above, differential mechanism space (201) is that rear end cover (3) is closed below, deceleration space (202) is that front cover (4) is closed above, casing (2) top is provided with the mounting pot (203) of installing drive motor (18), this mounting pot (203) is provided with a longitudinal mounting hole (208) in the middle of bottom, this longitudinal mounting hole (208) be positioned at deceleration space (202) top and through to space of slowing down (202), described casing (2) offers the first corresponding horizontal mounting hole (207) respectively on the left and right sides wall of deceleration space (202), described casing (2) offers the second corresponding horizontal mounting hole (205) respectively on the left and right sides wall of differential mechanism space (201), one input shaft (8) is by conical bearing A (10), conical bearing B (12) and bearing bracket stand (6) are arranged in longitudinal mounting hole (208), the active bevel gear part (82) of input shaft (8) lower end stretch into deceleration space (202) and with driven bevel pinion (13) engagement driving, driven bevel pinion (13) is fixed by socket on tooth axle (17), tooth axle (17) two ends are arranged in casing (2) respectively by conical bearing C (16) and bearing support (15), tooth axle (17) is provided with gear part (171), this gear part (171) and gearwheel (142) engagement driving on differential assembly (14), driven bevel pinion (13) and tooth axle (17) are positioned at deceleration space (202), differential assembly (14) is positioned at differential mechanism space (201), wherein, described bearing bracket stand (6) is fixed in longitudinal mounting hole (208), input shaft (8) is arranged in the axis hole (603) of bearing bracket stand (6) by the conical bearing A (10) that is oppositely arranged up and down and conical bearing B (12), the upper sheathed nut (9) of input shaft (8), conical bearing A (10) and conical bearing B (12), inward flange (604) is provided with in the axis hole (603) of bearing bracket stand (6), the outer ring of conical bearing A (10) and the outer ring of conical bearing B (12) are respectively from clamping inward flange (604) up and down, nut (9) is threaded with input shaft (8), nut (9) and initiatively bevel gear part (82) are respectively from the inner ring of the inner ring and conical bearing B (12) that clamp conical bearing A (10) up and down, the two ends sheathed conical bearing C (16) respectively of described tooth axle (17), inner ring and the tooth axle (17) of conical bearing C (16) offset, the outer ring of conical bearing C (16) is fixed on the inner of bearing support (15), two, left and right bearing support (15) is arranged in two the first horizontal mounting holes (207) in left and right respectively, and bearing support (15) is threaded with the first horizontal mounting hole (207).
2. a kind of speed reducer according to claim 1, it is characterized in that, the upper end of described input shaft (8) is provided with spline (81) and is connected with the output shaft of drive motor (18) by spline housing (7), and drive motor (18) is arranged on above mounting pot (203).
3. a kind of speed reducer according to claim 1, is characterized in that, described input shaft (8) is in vertically arranging up and down, and the output axle shaft of described tooth axle (17) and differential assembly (14) is all arranged in left and right horizontal.
4. a kind of speed reducer according to claim 1, it is characterized in that, the active bevel gear part (82) of described input shaft (8) lower end is higher than the axis of the output axle shaft of differential assembly (14), and the axis of the output axle shaft of differential assembly (14) is higher than the axis of tooth axle (17).
5. a kind of speed reducer according to claim 1, it is characterized in that, the outer end circumference of described bearing support (15) is provided with multiple locating tooth, and casing (2) is provided with and can engages with these locating tooths thus the toothed member (19) that rotates of restrictive axes bearing (15).
6. a kind of speed reducer according to claim 1, it is characterized in that, described bearing bracket stand (6) comprises cylindrical shell (601), the top of cylindrical shell (601) is provided with outward flange (602), axis hole (603) bottom of cylindrical shell (601) is provided with inward flange (604), the sidewall of cylindrical shell (601) has opening (605), the cylindrical shell (601) of bearing bracket stand (6) is when inserting in longitudinal mounting hole (208), and outward flange (602) is shelved on mounting pot (203) bottom and is fixed by fastening piece.
7. a kind of speed reducer according to claim 1, it is characterized in that, a second channel (206) is had in mounting pot (203) bottom, second channel (206) is through to space of slowing down (202) from the top down, mounting pot (203) sidewall is installed a pipe joint (1), first passage (209), second channel (206), the cavity of mounting pot (203), pipe joint (1) exhaust are passed through in such casing (2) inner space.
8. a kind of speed reducer according to claim 1, it is characterized in that, described input shaft (8) is arranged with oil sealing (11), oil sealing (11) to be arranged between input shaft (8) and inward flange (604) and to implement oil sealing between conical bearing A (10) and conical bearing B (12); The sidewall of described longitudinal mounting hole (208) has first passage (209), first passage (209) is communicated with differential mechanism space (201) and longitudinal mounting hole (208), the sidewall of described bearing bracket stand (6) is provided with the opening (605) corresponding with described first passage (209), and, this opening (605) is not less than the outer ring of conical bearing A (10), described casing (2) internal fixtion one lubricating cup (5), lubricating cup (5) is positioned at first passage (209) near differential mechanism space (201) side.
9. a kind of speed reducer according to claim 8, is characterized in that, the height of described lubricating cup (5) is not higher than the top edge height of the gearwheel (142) of differential assembly (14).
10. an electric vehicle, is characterized in that, comprises a kind of speed reducer as claimed in any one of claims 1-9 wherein.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510067028.1A CN104675967B (en) | 2015-02-09 | 2015-02-09 | Electric vehicle and reduction gear box thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107651097A (en) * | 2017-09-25 | 2018-02-02 | 浙江雅迪机车有限公司 | A kind of pendant motor of electric car |
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| CN107651097A (en) * | 2017-09-25 | 2018-02-02 | 浙江雅迪机车有限公司 | A kind of pendant motor of electric car |
| CN107651097B (en) * | 2017-09-25 | 2023-06-16 | 浙江雅迪机车有限公司 | Side-hung motor of electric vehicle |
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| CN104675967B (en) | 2017-05-10 |
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