CN114483934A - Automatic speed changing method and device of multi-connected planetary gear speed changing device - Google Patents

Automatic speed changing method and device of multi-connected planetary gear speed changing device Download PDF

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Publication number
CN114483934A
CN114483934A CN202210083499.1A CN202210083499A CN114483934A CN 114483934 A CN114483934 A CN 114483934A CN 202210083499 A CN202210083499 A CN 202210083499A CN 114483934 A CN114483934 A CN 114483934A
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gear
gear shifting
groove
transmission
speed
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CN202210083499.1A
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Chinese (zh)
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王国富
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Individual
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Priority to CN202210083499.1A priority Critical patent/CN114483934A/en
Publication of CN114483934A publication Critical patent/CN114483934A/en
Priority to CN202310082590.6A priority patent/CN116292777A/en
Priority to PCT/CN2023/143164 priority patent/WO2024152873A1/en
Pending legal-status Critical Current

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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16HGEARING
    • F16H3/00Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion
    • F16H3/44Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion using gears having orbital motion
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16HGEARING
    • F16H57/00General details of gearing
    • F16H57/02Gearboxes; Mounting gearing therein
    • F16H57/023Mounting or installation of gears or shafts in the gearboxes, e.g. methods or means for assembly
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16HGEARING
    • F16H57/00General details of gearing
    • F16H57/08General details of gearing of gearings with members having orbital motion
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16HGEARING
    • F16H61/00Control 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
    • F16H61/26Generation or transmission of movements for final actuating mechanisms
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/70Wind energy
    • Y02E10/72Wind turbines with rotation axis in wind direction

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Structure Of Transmissions (AREA)

Abstract

The invention relates to an automatic speed changing method of a multi-connected planetary gear speed changing device and the speed changing device thereof.A limit groove is arranged on the inner wall of a shell along the axis direction of a planet wheel, a gear shifting groove is arranged on a transmission mechanism of each speed ratio gear along the axis direction of the planet wheel, the notch of the gear shifting groove is opposite to that of the limit groove, and the gear shifting grooves on the transmission mechanisms of the adjacent speed ratio gears are mutually communicated; a gear shifting mechanism is arranged between the shell and the transmission mechanism, and the gear shifting mechanism is pushed to slide in the limiting groove and the gear shifting groove simultaneously through the side wall of the gear shifting groove so as to carry out forward speed regulation; a back-pushing mechanism is arranged between the shell and the transmission mechanism, and the back-pushing mechanism pushes the gear shifting mechanism to slide in the limiting groove and the gear shifting groove simultaneously so as to carry out reverse speed regulation. The invention does not need to apply external force, and automatically changes the stop of different gear rings or different sun gears in the multi-connected planetary gear speed change device through the change of required output torque, thereby realizing the automatic speed change adjustment of the speed change device.

Description

Automatic speed changing method and device of multi-connected planetary gear speed changing device
Technical Field
The invention relates to the technical field of mechanical speed change, in particular to an automatic speed change method of a multi-connected planetary gear speed change device and the speed change device thereof.
Background
In the planetary gear mechanism transmission, three transmission elements comprise a component torque input, a component fixing and a component torque output, and different transmission ratios are output by controlling the transmission relations of the three components, so that the speed change adjustment is realized. Most of the existing planetary gear mechanisms are single-connected, a few are double-connected, external force is usually required to control the movement of components during variable speed adjustment, and for the multi-connected planetary gear mechanism which is larger than the double-connected planetary gear mechanism shown in fig. 1, before design calculation is not broken through, the manufacturing difficulty caused by structural design and assembly is limited, so the multi-connected planetary gear mechanism is hardly applied in actual production life.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides an automatic speed changing method of a multi-connected planetary gear speed changing device and the speed changing device thereof, which do not need to apply external force, and automatically change the stop of different gear rings or different sun gears in the multi-connected planetary gear speed changing device through the change of required output torque, thereby realizing the automatic speed changing adjustment of the speed changing device.
In order to achieve the purpose, the invention provides an automatic speed changing method of a multi-connection planetary gear speed changing device, wherein a limiting groove is formed in the inner wall of a shell along the axis direction of a planetary gear, a gear shifting groove is formed in a transmission mechanism of each speed ratio gear along the axis direction of the planetary gear, the notch of the gear shifting groove is opposite to that of the limiting groove, and gear shifting grooves on transmission mechanisms of adjacent speed ratio gears are mutually communicated; a gear shifting mechanism is arranged between the shell and the transmission mechanism, and the gear shifting mechanism is pushed to slide in the limiting groove and the gear shifting groove simultaneously through the side wall of the gear shifting groove so as to carry out forward speed regulation; a back-pushing mechanism is arranged between the shell and the transmission mechanism, and the back-pushing mechanism pushes the gear shifting mechanism to slide in the limiting groove and the gear shifting groove simultaneously so as to carry out reverse speed regulation.
The basic principle of the automatic speed changing method of the multi-connected planetary gear speed changing device is as follows: under the condition that the input torque is unchanged, when the speed is regulated in the forward direction, the side wall of the shift groove pushes the shift mechanism to slide in the limit groove and the shift groove simultaneously by using the reaction force generated by the change of the output torque of the multi-connection planetary gear speed changing device, so that the transmission mechanisms with different speed ratio gears are stopped, transmission output is carried out according to the speed ratio relations among the stop coupling, the input coupling and the output coupling in the multi-connection planetary gear mechanism, and finally the speed regulation of different gears is realized; during reverse speed regulation, the gear shifting mechanism is automatically pushed to slide in the limiting groove and the gear shifting groove simultaneously through the reaction force of the back pushing mechanism, so that the transmission mechanisms at different gears are stopped, transmission output is carried out according to the speed ratio relations among the stop couplings, the input couplings and the output couplings in the multi-coupling planetary gear mechanism, and finally speed regulation at different gears is realized.
Furthermore, the transmission mechanism is a gear ring, and a gear shifting groove is formed in the outer peripheral wall of the gear ring of each gear ratio gear.
Furthermore, the transmission mechanism can also be a sun wheel, one end of the sun wheel extends outwards to the shell to form a sun wheel disc, and a gear shifting groove is formed in the outer peripheral wall of the sun wheel disc of each speed ratio gear.
Furthermore, the groove width of the gear shifting groove is gradually increased along the axis of the planet wheel from a low-speed ratio gear to a high-speed ratio gear.
Furthermore, the return mechanism is a return spring, one end of the return spring is fixed with the inner wall of the shell, and the other end of the return spring is abutted to the gear shifting mechanism.
Furthermore, the gear shifting mechanism is a steel ball and a gear shifting return sleeve, the gear shifting return sleeve is arranged between the shell and the transmission mechanism, a limiting hole is formed in the gear shifting return sleeve, the steel ball is arranged in the limiting hole, the side wall of the gear shifting groove pushes the steel ball to slide in the limiting groove and the gear shifting groove simultaneously, and the return spring is abutted to the gear shifting return sleeve.
Further, the gearshift still can trade the retaining ring, and the circle of shifting includes the sliding ring and shifts the cylinder, and the sliding ring periphery is for the bead that slides in the spacing inslot, and cylinder one end of shifting is connected with the sliding ring, and the cylinder other end of shifting stretches into the groove of shifting and slides in the groove of shifting, and return spring offsets with the sliding ring.
Further, when the gear shifting mechanism is a steel ball and a gear shifting return sleeve, the gear shifting groove is divided into an A section, a B section and a C section in sequence according to the groove width from small to large, and the width of the C section is not more than half of the diameter of the steel ball.
Further, when the gear shifting mechanism is a retainer ring, the gear shifting groove is divided into a section A, a section B and a section C in sequence according to the groove width from small to large, and the width of the section C is not more than half of the diameter of the cross section of the gear shifting cylinder.
Furthermore, the invention also provides a speed change device which comprises a shell and a multi-planetary gear mechanism arranged in the shell, and the automatic speed change method of the multi-planetary gear speed change device is applied.
Compared with the prior art, the invention has the following beneficial effects:
the invention uses the counterforce generated when the output torque of the multi-connected planetary gear speed change device is changed to drive the shift mechanism to slide in the shift grooves of the transmission mechanisms with different speed ratio gears by arranging the limit groove, the shift groove, the transmission mechanism, the shift mechanism and the return pushing mechanism under the condition of unchanged input torque and in the condition of forward speed regulation, when the shift mechanism is positioned in the shift groove of the transmission mechanism with a certain speed ratio gear, the transmission mechanism with the speed ratio gear can be stopped by combining the limit of the limit groove, and then the transmission output is carried out by the speed ratio relationship among the stop coupling, the input coupling and the output coupling in the planetary gear mechanism, finally the speed regulation is realized by changing the output transmission ratio, and the shift mechanism is automatically driven to slide in the shift grooves of the transmission mechanisms with different speed ratio gears by the counterforce of the return pushing mechanism in the condition of reverse speed regulation, and then realize the speed governing, whole speed governing process is automatic to be realized and need not additionally exert external force, has promoted speed change gear's variable speed application.
Drawings
FIG. 1 is a schematic structural layout of a multiple planetary transmission;
FIG. 2 is a schematic structural view of a locking ring gear of the multiple planetary transmission;
FIG. 3 is a schematic plan view of a shift gate of the present invention;
FIG. 4 is a schematic view of the gear ring, the steel ball and the shift return sleeve of FIG. 2;
FIG. 5 is a schematic view of the engagement of the ring gear and the change retainer ring of FIG. 2;
FIG. 6 is a schematic view of a locking sun gear of the multiple planetary transmission;
FIG. 7 is a schematic view of the sun gear disc, the steel ball and the shift return sleeve of FIG. 6;
fig. 8 is a schematic view of the sun gear disk and the change collar of fig. 6 in combination.
Reference numerals are as follows: 1. a housing; 2. a limiting groove; 3. a gear shifting groove; 4. a return spring; 5. a steel ball; 6. a gear shifting return sleeve; 7. a limiting hole; 8. replacing a check ring; 81. a slip ring; 82. a shift cylinder; 9. a sun gear disk.
Detailed Description
The technical scheme of the invention is further explained by combining the attached drawings.
Example one
As shown in fig. 1, a plurality of planetary gears g coaxial with each other on a planet carrier H are taken as a group, a transmission mechanism and a plurality of planetary gears g on the same radial plane are taken as a pair, wherein the transmission mechanism is a gear ring b or a sun gear a, and by combining the meshing transmission principle of the planetary gear structure, the number of teeth of the planetary gears of different pairs is different, the number of teeth of the corresponding gear ring and the sun gear is also different, and different pairs correspond to different output speed ratio gears. In view of the above, the present invention provides an automatic speed changing method for a multiple planetary gear transmission, which comprises the following steps:
1. a limiting groove 2 is formed in the inner wall of the shell 1 along the axis direction of the planet wheel, a gear shifting groove 3 is formed in the transmission mechanism of each speed ratio gear along the axis direction of the planet wheel, the notch of the gear shifting groove 3 is opposite to the notch of the limiting groove 2, and the gear shifting grooves 3 on the transmission mechanisms of adjacent speed ratio gears are mutually communicated.
2. A gear shifting mechanism is arranged between the shell 1 and the transmission mechanism, and the side wall of the gear shifting groove 3 pushes the gear shifting mechanism to slide in the limiting groove 2 and the gear shifting groove 3 simultaneously to carry out forward speed regulation.
3. A back-pushing mechanism is arranged between the shell 1 and the transmission mechanism, and the back-pushing mechanism pushes the gear shifting mechanism to slide in the limiting groove 2 and the gear shifting groove 3 simultaneously so as to carry out reverse speed regulation.
Specifically, as shown in fig. 2, 3, and 4, in the multiple planetary gear mechanism, a ring gear is used as a transmission mechanism, and shift grooves 3 are formed in the outer peripheral wall of the ring gear of each gear ratio step. The gear shifting mechanism is a steel ball 5 and a gear shifting return sleeve 6, the gear shifting return sleeve 6 is arranged between the shell 1 and the transmission mechanism, a limiting hole 7 is formed in the gear shifting return sleeve 6, the steel ball 5 is arranged in the limiting hole 7, the return pushing mechanism is a return spring 4, one end of the return spring 4 is fixed to the inner wall of the shell 1, and the other end of the return spring 4 abuts against the gear shifting return sleeve 6. The speed is adjusted in a forward direction by taking the speed ratio from low to high as the forward direction, the groove width of the gear shifting groove 3 is gradually increased along the axis of the planet wheel from a low speed ratio gear to a high speed ratio gear, the output torque is gradually increased during the forward speed adjustment, so under the condition that the input torque is unchanged, when the required output torque is increased, the torque generated by the rotation of the gear ring is increased, the reaction force of the groove wall of the gear shifting groove 3 on the steel ball 5 is also increased, along with the increase of the reaction force and the overcoming of the elastic restoring force of the return spring 4, the side wall of the gear shifting groove 3 pushes the steel ball 5 to simultaneously slide in the limiting groove 2 and the gear shifting groove 3, at the moment, the return spring 4 is gradually compressed, in the process, due to the limiting of the limiting groove 2, when the steel ball 5 is positioned in the gear ring of a certain speed ratio gear, the gear ring of the speed ratio gear ring is stopped to be used as the stopping connection of the multi-connection planet gear mechanism, the multi-connection planetary gear speed change device is combined with a multi-connection planetary gear mechanism, wherein one connection is used as an input connection to input torque, the other connection is used as an output connection to output torque, the multi-connection planetary gear speed change device is used for transmitting and outputting through the speed ratio relation among the stop connection, the input connection and the output connection, the rest connections which do not participate in transmission rotate along with the multi-connection planetary gear speed change device, and therefore speed regulation from a low speed ratio to a high speed ratio can be achieved in the process that the steel ball 5 moves from the gear ring of the low speed ratio gear to the gear ring of the high speed ratio gear.
According to the principle of forward speed regulation, when reverse speed regulation is needed, along with the reduction of required torque, the elastic restoring force of the return spring 4 overcomes the counterforce of the groove wall of the gear shifting groove 3 on the steel ball 5, and then the steel ball 5 is automatically pushed to move from the gear ring of the high-speed gear to the gear ring of the low-speed gear for speed regulation.
When the steel ball 5 is positioned in the gear ring of a certain speed ratio gear, the gear shifting grooves 3 on the two gear rings are communicated at a certain moment along with the rotation of the gear ring which is adjacent to the gear ring of the speed ratio gear and has a higher speed ratio gear than the gear ring of the speed ratio gear, and the steel ball 5 is required to be quickly and stably moved from the gear shifting groove 3 of the low speed ratio gear to the gear shifting groove 3 of the high speed ratio gear during forward speed regulation, so that preferably, as shown in fig. 3, the gear shifting grooves 3 on the gear ring are sequentially divided into an A section, a B section and a C section from small to large according to the groove width, the A section is taken as a binding section, the B section is taken as a working section, the C section is taken as a boosting pushing section, so that the included angle between the side wall surface of the A section and the longitudinal section of the gear shifting groove 3 and the included angle between the side wall surface of the C section and the longitudinal section of the gear shifting groove 3 are both larger than the included angle between the side wall surface of the B section and the longitudinal section of the gear shifting groove 3, thus, after the steel ball 5 slides from the gear shifting groove 3 on the gear ring of the low speed ratio gear ring to the gear ring, the problem that the speed regulation fails due to instantaneous reverse backspacing to the gear shifting groove 3 on the gear ring with the low speed ratio when the steel ball 5 slides in the gear shifting groove 3 on the gear ring with the high speed ratio can be prevented, and meanwhile, the instability of speed regulation caused by the jumping connection of the steel ball 5 during reverse speed regulation can be prevented; the width of the C section is not more than half of the diameter of the steel ball 5, so that the steel ball 5 can be quickly pushed to the shifting groove 3 on the high-speed-ratio gear ring gear by the shifting groove 3 on the low-speed-ratio gear ring gear when the forward speed is regulated.
Example two
In this embodiment, the shift mechanism is replaced by the shift collar 8, and the rest of the structure is the same as that of the first embodiment, as shown in fig. 5, the shift collar 8 includes a sliding ring 81 and a shift cylinder 82, the outer circumference of the sliding ring 81 is a rib sliding in the limiting groove 2, one end of the shift cylinder 82 is connected with the sliding ring 81, the other end of the shift cylinder 82 extends into the shift groove 3 and slides in the shift groove 3, and the return spring 4 is abutted against the sliding ring 81. Accordingly, the speed regulation principle of the present embodiment is the same as that of the first embodiment, and it is sufficient that the width of the C-section is not more than half of the cross-sectional diameter of the shift cylinder 82.
EXAMPLE III
In the present embodiment, the sun gear is used as a transmission mechanism to perform a speed regulation setting, as shown in fig. 6, 7 and 8, one end of the sun gear extends outward to the housing 1 to form a sun gear disk 9, and the shift grooves 3 are formed on the outer peripheral wall of the sun gear disk 9 of each speed ratio shift, and the rest of the structure and the final speed regulation principle are the same as those of the first embodiment.
Finally, the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all of them should be covered in the claims of the present invention.

Claims (10)

1. An automatic speed changing method of a multi-connected planetary gear speed changing device is characterized in that:
limiting grooves (2) are formed in the inner wall of the shell (1) along the axis direction of the planet wheel, gear shifting grooves (3) are formed in the transmission mechanisms of all speed ratio gears along the axis direction of the planet wheel, the notches of the gear shifting grooves (3) are opposite to the notches of the limiting grooves (2), and the gear shifting grooves (3) on the transmission mechanisms of adjacent speed ratio gears are communicated with each other;
a gear shifting mechanism is arranged between the shell (1) and the transmission mechanism, and the gear shifting mechanism is pushed to simultaneously slide in the limit groove (2) and the gear shifting groove (3) through the side wall of the gear shifting groove (3) to carry out forward speed regulation;
a return pushing mechanism is arranged between the shell (1) and the transmission mechanism, and the return pushing mechanism pushes the gear shifting mechanism to simultaneously slide in the limiting groove (2) and the gear shifting groove (3) to perform reverse speed regulation.
2. A multiple planetary gear transmission device automatic speed changing method according to claim 1, characterized in that: the transmission mechanism is a gear ring, and a gear shifting groove (3) is formed in the outer peripheral wall of the gear ring of each gear ratio.
3. A multiple planetary gear transmission device automatic speed changing method according to claim 1, characterized in that: the transmission mechanism is a sun gear, one end of the sun gear extends outwards to the shell (1) to form a sun gear disc (9), and the outer peripheral wall of the sun gear disc (9) of each speed ratio gear is provided with a gear shifting groove (3).
4. A multiple planetary gear transmission apparatus automatic speed changing method according to claim 2 or 3, characterized in that: the groove width of the gear shifting groove (3) is gradually increased from a low-speed ratio gear to a high-speed ratio gear along the axis of the planet wheel.
5. A multiple planetary gear transmission device automatic speed changing method according to claim 4, characterized in that: the return mechanism is a return spring (4), one end of the return spring (4) is fixed with the inner wall of the shell (1), and the other end of the return spring (4) is abutted to the gear shifting mechanism.
6. A multiple planetary gear transmission automatic transmission as set forth in claim 5, wherein: the gear shifting mechanism is a steel ball (5) and a gear shifting return sleeve (6), the gear shifting return sleeve (6) is arranged between the shell (1) and the transmission mechanism, a limiting hole (7) is formed in the gear shifting return sleeve (6), the steel ball (5) is arranged in the limiting hole (7), the side wall of the gear shifting groove (3) pushes the steel ball (5) to slide in the limiting groove (2) and the gear shifting groove (3) simultaneously, and the return spring (4) is abutted to the gear shifting return sleeve (6).
7. A multiple planetary gear transmission device automatic speed changing method according to claim 5, characterized in that: for trading retaining ring (8), trade retaining ring (8) and include sliding ring (81) and shift cylinder (82), sliding ring (81) periphery is the bead that slides in spacing groove (2), and shift cylinder (82) one end is connected with sliding ring (81), and shift cylinder (82) other end stretches into and shifts groove (3) and slides in shifting groove (3), and return spring (4) offset with sliding ring (81).
8. A multiple planetary gear transmission device automatic speed changing method according to claim 6, characterized in that: the gear shifting groove (3) is divided into an A section, a B section and a C section in sequence according to the groove width from small to large, and the width of the C section is not more than half of the diameter of the steel ball (5).
9. A multiple planetary gear transmission automatic speed changing method according to claim 7, characterized in that: the gear shifting groove (3) is sequentially divided into an A section, a B section and a C section according to the groove width from small to large, and the width of the C section is not more than half of the diameter of the cross section of the gear shifting cylinder (82).
10. The utility model provides a speed change gear, includes casing (1) and the multiple planetary gear who locates in casing (1), its characterized in that: a multiple planetary gear transmission apparatus automatic transmission method as claimed in any one of claims 8 or 9 is applied.
CN202210083499.1A 2022-01-25 2022-01-25 Automatic speed changing method and device of multi-connected planetary gear speed changing device Pending CN114483934A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
CN202210083499.1A CN114483934A (en) 2022-01-25 2022-01-25 Automatic speed changing method and device of multi-connected planetary gear speed changing device
CN202310082590.6A CN116292777A (en) 2022-01-25 2023-01-20 Self-adaptive speed change device and speed changer for different speed change mechanisms
PCT/CN2023/143164 WO2024152873A1 (en) 2022-01-25 2023-12-29 Self-adaptive transmission device for different transmission mechanisms and transmission

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202210083499.1A CN114483934A (en) 2022-01-25 2022-01-25 Automatic speed changing method and device of multi-connected planetary gear speed changing device

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CN114483934A true CN114483934A (en) 2022-05-13

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CN202210083499.1A Pending CN114483934A (en) 2022-01-25 2022-01-25 Automatic speed changing method and device of multi-connected planetary gear speed changing device
CN202310082590.6A Pending CN116292777A (en) 2022-01-25 2023-01-20 Self-adaptive speed change device and speed changer for different speed change mechanisms

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CN114483934A (en) * 2022-01-25 2022-05-13 王国富 Automatic speed changing method and device of multi-connected planetary gear speed changing device

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JP2003343721A (en) * 2002-05-27 2003-12-03 Hitachi Unisia Automotive Ltd Range shift device of automatic transmission
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CN114483934A (en) * 2022-01-25 2022-05-13 王国富 Automatic speed changing method and device of multi-connected planetary gear speed changing device
CN114278708A (en) * 2022-01-25 2022-04-05 王国富 Automatic double-speed torque wrench
CN115539581A (en) * 2022-09-30 2022-12-30 福建中青传动科技有限公司 Transmission with bidirectional combination gear shifting mechanism and working method thereof

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