CN104791458A - Double-gear gearbox assembly capable of automatically shifting gears - Google Patents
Double-gear gearbox assembly capable of automatically shifting gears Download PDFInfo
- Publication number
- CN104791458A CN104791458A CN201510154616.9A CN201510154616A CN104791458A CN 104791458 A CN104791458 A CN 104791458A CN 201510154616 A CN201510154616 A CN 201510154616A CN 104791458 A CN104791458 A CN 104791458A
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- Prior art keywords
- worm
- gear
- annular boss
- shifting
- shaft
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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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
- F16H57/039—Gearboxes for accommodating worm gears
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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
- F16H57/03—Gearboxes; Mounting gearing therein characterised by means for reinforcing gearboxes, e.g. ribs
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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
- F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
- F16H61/26—Generation or transmission of movements for final actuating mechanisms
- F16H61/28—Generation or transmission of movements for final actuating mechanisms with at least one movement of the final actuating mechanism being caused by a non-mechanical force, e.g. power-assisted
- F16H61/32—Electric motors actuators or related electrical control means therefor
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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
- F16H2306/00—Shifting
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Gear-Shifting Mechanisms (AREA)
Abstract
The invention relates to a double-gear gearbox assembly capable of automatically shifting gears. The double-gear gearbox assembly capable of automatically shifting the gears comprises a double-gear gearbox, a shifting fork, a gear shifting piece and a gear shifting shaft; a rotation speed sensor and an automatic gear shifting device are arranged outside the double-gear gearbox, the automatic gear shifting device comprises a positive and negative rotation direct current motor, a worm wheel, a worm, a worm-wheel shaft and an angle sensor, one end of the worm-wheel shaft is clamped to the outer end of the gear shifting shaft, the other end of the worm-wheel shaft is connected with the angle sensor, the positive and negative rotation direct current motor drives the worm to rotate, the worm drives the worm wheel to rotate, and the worm wheel drives the gear shifting shaft to rotate through the worm-wheel shaft; an annular boss and an annular rib are arranged on a case cover of the double-gear gearbox, the number of strip-shaped ribs on the side close to a power input hole is larger than that of strip-shaped ribs on the side far away from the power input hole, a second annular boss is arranged around the periphery of the power input hole, and the first annular boss is connected with the second annular boss through a third annular boss. By means of the double-gear gearbox assembly capable of automatically shifting the gears, automatic transformation of the high gear and the low gear can be achieved, and the shell strength is improved.
Description
Technical field
The present invention relates to automotive transmission, belong to mechanical structure technical field, be applicable to pure electric automobile.
Background technique
Two shift transmission containing two gears, is only top gear and bottom gear.Two shift transmission is the same with other speed changer, during gearshift, by External Force Acting, shifting shaft is rotated, then promotes shift fork realization gearshift by gearshift sheet.At present, two shift transmission is manual shift, and it is external that shifting shaft reaches transmission case, drives shifting shaft to rotate by shift handle.What require car steering travelling comfort along with Consumer improves constantly, and the also requirement of automotive automation degree improves thereupon.
In addition, the shell of existing pair of shift transmission assembly, be locked together by bolt and nut after being fastened by case lid and casing, both are cast member, and case lid is provided with power input hole and Power output hole.When transmission duty, casing and case lid all can bear larger moment of torsion, but because power input, output are all in case lid side, therefore higher to the requirement of strength of case lid, and existing case lid intensity still has much room for improvement.
Summary of the invention
The present invention aims to provide one can fit self-shifting pair of shift transmission assembly, can realize the auto-changing of top gear and bottom gear, thus mate with corresponding engine speed.
For this reason, the technical solution adopted in the present invention is: a kind of self-shifting pair of shift transmission assembly, comprise two shift transmission (1), and the shift fork (2) be arranged in two shift transmission (1), gearshift sheet (3) and shifting shaft (4), one end of described shifting shaft (4) reaches two shift transmission (1) outward, the other end is connected with gearshift sheet (3), it is characterized in that: be also provided with speed probe (5) and automatic gear shift apparatus outward described pair of shift transmission (1), described speed probe (5) is for detecting the output speed of two shift transmission (1), described automatic gear shift apparatus comprises clockwise and anticlockwise direct current generator (6), worm gear (7), worm screw (8), worm-wheel shaft (9) and angle transducer (10), described worm gear (7) is sleeved on worm-wheel shaft (9), it is secondary that worm gear (7) and worm screw (8) form Worm Wheel System, and be arranged in worm gear case (12) by bearing (11), one end of described worm-wheel shaft (9) is stuck in the outer end of shifting shaft (4), the other end of worm-wheel shaft (9) is connected with angle transducer (10), described clockwise and anticlockwise direct current generator (6) drives worm screw (8) to rotate, worm screw (8) drives worm gear (7) to rotate, worm gear (7) drives shifting shaft (4) to rotate by worm-wheel shaft (9),
The shell of described pair of shift transmission (1) is locked together by bolt and nut by after case lid and casing fastening, described case lid is provided with power input hole (1a) and Power output hole (1b), with described Power output hole (1b) for the center of circle is provided with one annular boss (1c) and annular muscle (1d) together, described annular boss (1c) is looped around Power output hole (1b) periphery, the diameter of annular muscle (1d) is greater than the diameter of annular boss (1c), with Power output hole (1b) for the center of circle is also provided with the bar shaped muscle (1e) distributed in divergent shape, the medial extremity of every root bar shaped muscle (1e) is connected on annular boss (1c), the outboard end of bar shaped muscle (1e) at least extends on annular muscle (1d), and the bar shaped muscle (1e) near power input hole (1a) side is more than the bar shaped muscle (1e) away from power input hole (1a) side, described power input hole (1) periphery is provided with the second annular boss (1j), and the first annular boss (1c) is connected by the 3rd annular boss (1k) with the second annular boss (1j), four circumferentially uniform location and installation boss (1f) are provided with in the periphery of the second annular boss (1j), one of them location and installation boss (1f) is positioned between power input hole (1a) and Power output hole (1b), and be connected with the second annular boss (1j) by three connecting tendons (1g), its excess-three location and installation boss (1f) is connected with the second annular boss (1j) respectively by each self-corresponding connecting plate (1h), the width of described connecting plate (1h), article three, the overall width of connecting tendon (1g) is reduced to each self-corresponding location and installation boss (1f) gradually by the second annular boss (1j).
Working principle and process introduction: the output speed of speed changer is consistent with the rotating speed of motor car engine, assuming that 4000N/min is the separatrix of high engine speeds gear and bottom gear, when speed probe detects that the output speed of two shift transmission reaches 4000N/min, speed probe by signal feed back to central control unit, central controller controls clockwise and anticlockwise direct current generator starts forward/reverse, then realizes the conversion of bottom gear to top gear by Worm Wheel System pair, worm-wheel shaft, shifting shaft, gearshift sheet, shift fork successively; When speed probe detects the output speed of two shift transmission lower than 4000N/min, speed probe by signal feed back to central control unit, central controller controls clockwise and anticlockwise direct current generator starts reversion/rotating forward, then realizes the conversion of top gear to bottom gear by Worm Wheel System pair, worm-wheel shaft, shifting shaft, gearshift sheet, shift fork successively.Whether angle transducer rotate in place for detecting clockwise and anticlockwise direct current generator, and when angle transducer detects that rotation angle reaches set angle, central controller controls clockwise and anticlockwise direct current generator stops operating, and gearshift completes.
Preferred as such scheme, the outer end of described shifting shaft (4) is flat, one end that worm-wheel shaft (9) is connected with shifting shaft (4) has the through breach (9a) with shifting shaft (4) outer end cross-sections match, the outer end of described shifting shaft (4) snaps in through breach (9a), thus realizes synchronous axial system.
Beneficial effect of the present invention:
Existing pair of shift transmission basis adds gearshift, the auto-changing of top gear and bottom gear can be realized, thus mate with corresponding engine speed, do not need manual shift, it also avoid the engine rotation because manual shift causes not in time and the unmatched problem of gear, improve the automaticity of automobile and the travelling comfort of driving, extend the working life of speed changer; Adopt the positive and negative positive motor of direct current, relative actuating motor, cost is low, has more the market competitiveness, is particularly suitable for using on pure electric automobile.
In addition, when transmission assembly works, lid section between power input hole and Power output hole can bear larger moment of torsion, and the present invention arranges the combination stiffening rib be made up of bar shaped muscle and annular muscle between power input hole and Power output hole, and the bar shaped muscle limited near power input hole side is more than the bar shaped muscle away from power input hole side, to enhance the intensity of case lid intermediate portion, guaranteeing that case lid can bear more while high pulling torque, save material to greatest extent, reduce cost.
Accompanying drawing explanation
Fig. 1 is stereogram of the present invention.
Fig. 2 is structural representation of the present invention.
Fig. 3 is the cover structure schematic diagram of two shift transmission in Fig. 1.
Embodiment
Below by embodiment also by reference to the accompanying drawings, the invention will be further described:
Shown in composition graphs 1, Fig. 2, a kind of self-shifting pair of shift transmission assembly, primarily of two shift transmission 1, shift fork 2, composition such as gearshift sheet 3, shifting shaft 4 etc.Two shift transmission 1, containing top gear and bottom gear two gears, can export high and low two kinds of different rotating speeds.Shift fork 2, gearshift sheet 3, shifting shaft 4 are arranged in two shift transmission 1, by External Force Acting, shifting shaft 4 are rotated, then promote by gearshift sheet 3 conversion that shift fork 2 realizes between top gear and bottom gear.One end of shifting shaft 4 reaches outside two shift transmission 1, and the other end is connected with gearshift sheet 3.Existing pair of shift transmission is manual variable block, is connected with shift handle in the outer end of shifting shaft 4, drives shifting shaft 4 to rotate together by rotating shift handle.The partial shell of two shift transmission 1 is only contained shown in Fig. 2.The above is prior art, does not repeat them here.
Difference is: outside two shift transmission 1, be also provided with speed probe 5 and automatic gear shift apparatus, and speed probe 5 is for detecting the output speed of two shift transmission 1, and automatic gear shift apparatus is for realizing the auto-changing of top gear and bottom gear.
Automatic gear shift apparatus forms primarily of clockwise and anticlockwise direct current generator 6, worm gear 7, worm screw 8, worm-wheel shaft 9 and angle transducer 10.Worm gear 7 is sleeved on worm-wheel shaft 9, and worm gear 7 and worm screw 8 form Worm Wheel System pair, and are arranged in worm gear case 12 by bearing 11.One end of worm-wheel shaft 9 is stuck in the outer end of shifting shaft 4, and the other end of worm-wheel shaft 9 is connected with angle transducer 10, and clockwise and anticlockwise direct current generator 6 drives worm screw 8 to rotate, and worm screw 8 drives worm gear 7 to rotate, and worm gear 7 drives shifting shaft 4 to rotate by worm-wheel shaft 9.Automatic gear shift apparatus instead of existing shift handle, and jointly realizes self shifter in conjunction with speed probe 5.Also need onboard to be equipped with central control unit, for controlling start and stop and the sense of rotation of clockwise and anticlockwise direct current generator 6.
The output speed of two shift transmission 1 is consistent with the rotating speed of motor car engine, assuming that 4000N/min is the separatrix of high engine speeds gear and bottom gear, when speed probe 5 detects that the output speed of two shift transmission 1 reaches 4000N/min, speed probe 5 by signal feed back to central control unit, central controller controls clockwise and anticlockwise direct current generator 6 starts forward/reverse, then realizes the conversion of bottom gear to top gear by Worm Wheel System pair, worm-wheel shaft 9, shifting shaft 4, gearshift sheet 3, shift fork 2 successively; When speed probe detects the output speed of two shift transmission lower than 4000N/min, speed probe by signal feed back to central control unit, central controller controls clockwise and anticlockwise direct current generator 6 starts reversion/rotating forward, then realizes the conversion of top gear to bottom gear by Worm Wheel System pair, worm-wheel shaft 9, shifting shaft 4, gearshift sheet 3, shift fork 2 successively.Whether angle transducer 10 rotate in place for detecting clockwise and anticlockwise direct current generator 6, and when angle transducer 10 detects that rotation angle reaches set angle, central controller controls clockwise and anticlockwise direct current generator 6 stops operating, and gearshift completes.
Preferably, the outer end of shifting shaft 4 is flat, and one end that worm-wheel shaft 9 is connected with shifting shaft 4 has the through breach 9a with shifting shaft 4 outer end cross-sections match, and the outer end of shifting shaft 4 snaps in through breach 9a, thus realizes synchronous axial system.In addition, totally four, bearing 11, wherein two for installing worm-wheel shaft 9, and two other is for installing worm screw 8, and four bearings 11 preferably select angular contact ball bearing.
Shown in composition graphs 1, Fig. 3, the shell of two shift transmission 1 is locked together by bolt and nut by after case lid and casing fastening, case lid is provided with power input hole 1a and Power output hole 1b, with Power output hole 1b for the center of circle be provided with one annular boss 1c with together with annular muscle 1d, annular boss 1c is looped around 1b periphery, Power output hole, and the diameter of annular muscle 1d is greater than the diameter of annular boss 1c.With Power output hole 1b for the center of circle is also provided with the bar shaped muscle 1e distributed in divergent shape, the medial extremity of every root bar shaped muscle 1e is connected on annular boss 1c, the outboard end of bar shaped muscle 1e at least extends on annular muscle 1d, and part bar shaped muscle 1e outboard end reaches outside annular muscle 1d.In order to increase the intensity on case lid between power input hole 1a and Power output hole 1b, bar shaped muscle 1e near power input hole 1a side is more than the bar shaped muscle 1e away from power input hole 1a side, namely the bar shaped muscle 1e between power input hole 1a and Power output hole 1b is closeer, and the bar shaped muscle 1 away from power input hole 1a side is relatively sparse.
Power input hole 1 periphery is provided with the second annular boss 1j, and the first annular boss 1c is connected by the 3rd annular boss 1k with the second annular boss 1j, forms the structure that three rings are connected.Four circumferentially uniform location and installation boss 1f are provided with in the periphery of the second annular boss 1j, one of them location and installation boss 1f is between power input hole 1a and Power output hole 1b, and be connected with the second annular boss 1j by three connecting tendon 1g, its excess-three location and installation boss 1f is connected with the second annular boss 1j respectively by each self-corresponding connecting plate 1h, and the width of connecting plate 1h, the overall width of three connecting tendon 1g are reduced to each self-corresponding location and installation boss 1f gradually by the second annular boss 1j.
Claims (3)
1. self-shifting pair of shift transmission assembly, comprise two shift transmission (1), and the shift fork (2) be arranged in two shift transmission (1), gearshift sheet (3) and shifting shaft (4), one end of described shifting shaft (4) reaches two shift transmission (1) outward, the other end is connected with gearshift sheet (3), it is characterized in that: be also provided with speed probe (5) and automatic gear shift apparatus outward described pair of shift transmission (1), described speed probe (5) is for detecting the output speed of two shift transmission (1), described automatic gear shift apparatus comprises clockwise and anticlockwise direct current generator (6), worm gear (7), worm screw (8), worm-wheel shaft (9) and angle transducer (10), described worm gear (7) is sleeved on worm-wheel shaft (9), it is secondary that worm gear (7) and worm screw (8) form Worm Wheel System, and be arranged in worm gear case (12) by bearing (11), one end of described worm-wheel shaft (9) is stuck in the outer end of shifting shaft (4), the other end of worm-wheel shaft (9) is connected with angle transducer (10), described clockwise and anticlockwise direct current generator (6) drives worm screw (8) to rotate, worm screw (8) drives worm gear (7) to rotate, worm gear (7) drives shifting shaft (4) to rotate by worm-wheel shaft (9),
The shell of described pair of shift transmission (1) is locked together by bolt and nut by after case lid and casing fastening, described case lid is provided with power input hole (1a) and Power output hole (1b), with described Power output hole (1b) for the center of circle is provided with one annular boss (1c) and annular muscle (1d) together, described annular boss (1c) is looped around Power output hole (1b) periphery, the diameter of annular muscle (1d) is greater than the diameter of annular boss (1c), with Power output hole (1b) for the center of circle is also provided with the bar shaped muscle (1e) distributed in divergent shape, the medial extremity of every root bar shaped muscle (1e) is connected on annular boss (1c), the outboard end of bar shaped muscle (1e) at least extends on annular muscle (1d), and the bar shaped muscle (1e) near power input hole (1a) side is more than the bar shaped muscle (1e) away from power input hole (1a) side, described power input hole (1) periphery is provided with the second annular boss (1j), and the first annular boss (1c) is connected by the 3rd annular boss (1k) with the second annular boss (1j), four circumferentially uniform location and installation boss (1f) are provided with in the periphery of the second annular boss (1j), one of them location and installation boss (1f) is positioned between power input hole (1a) and Power output hole (1b), and be connected with the second annular boss (1j) by three connecting tendons (1g), its excess-three location and installation boss (1f) is connected with the second annular boss (1j) respectively by each self-corresponding connecting plate (1h), the width of described connecting plate (1h), article three, the overall width of connecting tendon (1g) is reduced to each self-corresponding location and installation boss (1f) gradually by the second annular boss (1j).
2. self-shifting pair of shift transmission assembly according to claim 1, it is characterized in that: the outer end of described shifting shaft (4) is flat, one end that worm-wheel shaft (9) is connected with shifting shaft (4) has the through breach (9a) with shifting shaft (4) outer end cross-sections match, the outer end of described shifting shaft (4) snaps in through breach (9a), thus realizes synchronous axial system.
3. self-shifting pair of shift transmission assembly according to claim 1, is characterized in that: described bearing (11) is angular contact ball bearing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510154616.9A CN104791458A (en) | 2015-04-02 | 2015-04-02 | Double-gear gearbox assembly capable of automatically shifting gears |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510154616.9A CN104791458A (en) | 2015-04-02 | 2015-04-02 | Double-gear gearbox assembly capable of automatically shifting gears |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104791458A true CN104791458A (en) | 2015-07-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510154616.9A Pending CN104791458A (en) | 2015-04-02 | 2015-04-02 | Double-gear gearbox assembly capable of automatically shifting gears |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104791458A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105179682A (en) * | 2015-08-25 | 2015-12-23 | 重庆长安汽车股份有限公司 | Gear shifting control method and system of two-gear speed-changing vehicle |
| CN108533723A (en) * | 2017-03-01 | 2018-09-14 | 罗伯特·博世有限公司 | Speed changer driving device and comfortable driving device with speed changer driving device |
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| CN101457831A (en) * | 2007-12-13 | 2009-06-17 | 比亚迪股份有限公司 | Automatic gear shift mechanism for transmission |
| CN201875115U (en) * | 2010-07-20 | 2011-06-22 | 浙江中马汽车变速器股份有限公司 | Second gear reducer assembly automatic gear shifting executing mechanism for electric vehicle |
| CN104179948A (en) * | 2014-08-15 | 2014-12-03 | 丹阳荣嘉精密机械有限公司 | Gearbox cover |
| CN104309474A (en) * | 2014-09-25 | 2015-01-28 | 洛阳睿能传动科技有限公司 | Transmission mechanism and transmission method for driven wheel of continuously variable transmission of electromobile |
| CN204664354U (en) * | 2015-04-02 | 2015-09-23 | 重庆钟华机械有限责任公司 | Self-shifting pair of shift transmission assembly |
-
2015
- 2015-04-02 CN CN201510154616.9A patent/CN104791458A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101457831A (en) * | 2007-12-13 | 2009-06-17 | 比亚迪股份有限公司 | Automatic gear shift mechanism for transmission |
| CN201875115U (en) * | 2010-07-20 | 2011-06-22 | 浙江中马汽车变速器股份有限公司 | Second gear reducer assembly automatic gear shifting executing mechanism for electric vehicle |
| CN104179948A (en) * | 2014-08-15 | 2014-12-03 | 丹阳荣嘉精密机械有限公司 | Gearbox cover |
| CN104309474A (en) * | 2014-09-25 | 2015-01-28 | 洛阳睿能传动科技有限公司 | Transmission mechanism and transmission method for driven wheel of continuously variable transmission of electromobile |
| CN204664354U (en) * | 2015-04-02 | 2015-09-23 | 重庆钟华机械有限责任公司 | Self-shifting pair of shift transmission assembly |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105179682A (en) * | 2015-08-25 | 2015-12-23 | 重庆长安汽车股份有限公司 | Gear shifting control method and system of two-gear speed-changing vehicle |
| CN105179682B (en) * | 2015-08-25 | 2017-08-25 | 重庆长安汽车股份有限公司 | The shift control method and system of a kind of two gears transmission vehicle |
| CN108533723A (en) * | 2017-03-01 | 2018-09-14 | 罗伯特·博世有限公司 | Speed changer driving device and comfortable driving device with speed changer driving device |
| CN108533723B (en) * | 2017-03-01 | 2023-10-03 | 罗伯特·博世有限公司 | Transmission drive and comfort drive with a transmission drive |
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Application publication date: 20150722 |
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| RJ01 | Rejection of invention patent application after publication |