CN111457065B - Two kinds of rotational speed output gear boxes of concentric - Google Patents

Two kinds of rotational speed output gear boxes of concentric Download PDF

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Publication number
CN111457065B
CN111457065B CN202010356332.9A CN202010356332A CN111457065B CN 111457065 B CN111457065 B CN 111457065B CN 202010356332 A CN202010356332 A CN 202010356332A CN 111457065 B CN111457065 B CN 111457065B
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CN
China
Prior art keywords
shaft
input
transmission shaft
input shaft
gear
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Application number
CN202010356332.9A
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Chinese (zh)
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CN111457065A (en
Inventor
陈王龙
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Hangzhou Xiaoshan Jiangnan General Machinery Co ltd
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Hangzhou Xiaoshan Jiangnan General Machinery Co ltd
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Classifications

    • 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
    • F16H3/02Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion
    • F16H3/08Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion exclusively or essentially with continuously meshing gears, that can be disengaged from their shafts
    • F16H3/087Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion exclusively or essentially with continuously meshing gears, that can be disengaged from their shafts characterised by the disposition of the gears
    • F16H3/091Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion exclusively or essentially with continuously meshing gears, that can be disengaged from their shafts characterised by the disposition of the gears including a single countershaft
    • F16H3/0915Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion exclusively or essentially with continuously meshing gears, that can be disengaged from their shafts characterised by the disposition of the gears including a single countershaft with coaxial input and output shafts
    • 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
    • F16DCOUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D25/00Fluid-actuated clutches
    • F16D25/06Fluid-actuated clutches in which the fluid actuates a piston incorporated in, i.e. rotating with the clutch
    • F16D25/062Fluid-actuated clutches in which the fluid actuates a piston incorporated in, i.e. rotating with the clutch the clutch having friction surfaces
    • F16D25/063Fluid-actuated clutches in which the fluid actuates a piston incorporated in, i.e. rotating with the clutch the clutch having friction surfaces with clutch members exclusively moving axially
    • F16D25/0635Fluid-actuated clutches in which the fluid actuates a piston incorporated in, i.e. rotating with the clutch the clutch having friction surfaces with clutch members exclusively moving axially with flat friction surfaces, e.g. discs
    • F16D25/0638Fluid-actuated clutches in which the fluid actuates a piston incorporated in, i.e. rotating with the clutch the clutch having friction surfaces with clutch members exclusively moving axially with flat friction surfaces, e.g. discs with more than two discs, e.g. multiple lamellae
    • 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
    • F16H2200/00Transmissions for multiple ratios
    • F16H2200/003Transmissions for multiple ratios characterised by the number of forward speeds
    • F16H2200/0034Transmissions for multiple ratios characterised by the number of forward speeds the gear ratios comprising two forward speeds
    • 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
    • F16H2200/00Transmissions for multiple ratios
    • F16H2200/20Transmissions using gears with orbital motion
    • F16H2200/203Transmissions using gears with orbital motion characterised by the engaging friction means not of the freewheel type, e.g. friction clutches or brakes
    • F16H2200/2035Transmissions using gears with orbital motion characterised by the engaging friction means not of the freewheel type, e.g. friction clutches or brakes with two engaging means

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

Abstract

The invention discloses a concentric two-speed output gear box, which relates to the field of transmission devices and comprises an input shaft coupler driven by a diesel engine or a motor, wherein the input shaft coupler is connected with one end of an input shaft arranged in the box body; the box body is provided with a control valve for sending out a clutch combination instruction and a gearbox cooler for cooling the interior of the box body. According to the invention, under the condition that the input rotation speed of the prime motor is fixed, different working instructions are sent out through the control valve, and the rotation speed of the output shaft can be output according to two different setting requirements; the gear box has compact integral structure, small volume and high operation efficiency.

Description

Two kinds of rotational speed output gear boxes of concentric
Technical Field
The invention relates to the field of transmission devices, in particular to a concentric two-speed output gearbox.
Background
The existing marine gearbox mostly adopts an input shaft component, a transmission shaft component, an output shaft component and the like, the traditional gearbox structure can basically meet the power input and output, speed reduction or speed increase and other power conversion, but different special transmission purposes are realized, deformation design is needed, so that structural complexity is often brought, transmission efficiency is reduced, and therefore, at present, no gearbox can achieve two rotational speeds through a clutch in the input shaft component and a clutch in the transmission shaft component under the control of a hydraulic valve, and the input and the output shafts are on the same central line.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a concentric two-speed output gear box, wherein two sets of parallel clutch components of the same gear box are utilized to achieve two different output speeds under the condition of gear engagement, and the input and the output shafts are on the same central line.
The invention aims at being completed by the following technical scheme: the concentric two-type rotating speed output gear box comprises an input shaft coupling driven by a diesel engine or a motor, wherein the input shaft coupling is connected with one end of an input shaft arranged in the box body, a connecting housing is arranged at the periphery of the input shaft coupling and used for connecting the diesel engine or the motor, an input transmission gear meshed with a transmission shaft driving gear is fixedly arranged on the input shaft, an input shaft piston, an input shaft return spring, an input shaft inner friction plate and an input shaft outer friction plate are arranged in the input transmission gear, and the input shaft inner friction plate and the input shaft outer friction plate form an input shaft clutch;
One end of the driving gear of the transmission shaft is provided with a spline seat and meshed with the inner friction plate of the transmission shaft, the driving gear of the transmission shaft is sleeved on the transmission shaft in a sliding manner, a transmission shaft clutch shell is fixedly arranged on the transmission shaft and used for installing a transmission shaft piston, a transmission shaft return spring, the inner friction plate of the transmission shaft and the outer friction plate of the transmission shaft, the inner friction plate and the outer friction plate of the transmission shaft form a transmission shaft clutch, a transmission shaft speed change gear meshed with an output gear is fixedly arranged on the transmission shaft, the output gear is fixedly arranged on an output shaft, and the output end of the output shaft is connected with an output coupling and used for outputting power outwards;
the input shaft and the output shaft are coaxially arranged, an input shaft driving gear meshed with a transmission gear of the transmission shaft is fixedly arranged on the input shaft, and the transmission gear of the transmission shaft is fixedly arranged on a clutch shell of the transmission shaft;
the box body is provided with a control valve for sending out a clutch combination instruction and a gearbox cooler for cooling the interior of the box body.
As a further technical scheme, the input shaft is supported on the box body through a bearing A and a bearing F, the driving gear of the input shaft is supported on the input shaft through a bearing G and a bearing H, the transmission shaft is supported on the box body through a bearing B and a bearing C, one end of the transmission shaft is provided with a transmission shaft oil inlet end cover, the output shaft is supported on the box body through a bearing D and a bearing E, and a gear box bracket is arranged on the box body;
When the control valve sends out a first gear rotating speed working instruction, the input coupling and the input shaft drive the input transmission gear to rotate, and the transmission shaft piston moves to compress the inner friction plate and the outer friction plate of the transmission shaft, namely the transmission shaft clutch is combined; when the control valve sends out a second gear rotating speed working instruction, the input shaft coupling and the input shaft drive the input transmission gear to rotate, and the piston of the input shaft moves to press the inner friction plate and the outer friction plate of the input shaft, namely the input shaft clutch is combined.
The beneficial effects of the invention are as follows: under the condition that the input rotation speed of the prime motor is fixed, different working instructions are sent out through the control valve, and the rotation speed of the output shaft can be output according to two different setting requirements; the gear box has compact integral structure, small volume and high operation efficiency.
Drawings
Fig. 1 is a schematic structural view of the present invention.
Fig. 2 is a cross-sectional view A-A of fig. 1.
Reference numerals illustrate: 1. a connecting housing; 2. a case; 3. an input coupling; 4. a bearing A; 5. an input shaft; 6. an input drive gear; 7. an input shaft return spring; 8. an input shaft piston; 9. an input shaft inner friction plate; 10. an input shaft outer friction plate; 11. a transmission shaft; 12. an oil inlet end cover of the transmission shaft; 13. a bearing B; 14. a drive shaft drive gear; 15. a drive shaft return spring; 16. a friction plate in the transmission shaft; 17. an outer friction plate of the transmission shaft; 18. a control valve; 19. a drive shaft clutch housing; 20. a drive shaft piston; 21. a transmission shaft transmission gear; 22. a transmission shaft variable speed gear; 23. a bearing C; 24. an output gear; 25. an output coupling; 26. a bearing D; 27. an output shaft; 28. a bearing E; 29. a bearing F; 30. a bearing G; 31. a bearing H; 32. an input shaft drive gear; 33. a gear box bracket; 34. a gearbox cooler.
Detailed Description
The invention will be described in detail below with reference to the attached drawings:
Examples: as shown in fig. 1 and 2, the concentric two-type rotational speed output gear box comprises an input shaft coupling 3 driven by a diesel engine or a motor, wherein the input shaft coupling 3 is connected with one end of an input shaft 5 arranged in a box body 2, a connecting housing 1 is arranged on the periphery of the input shaft coupling 3 and is used for connecting the diesel engine or the motor, an input transmission gear 6 meshed with a transmission shaft driving gear 14 is fixedly arranged on the input shaft 5, an input shaft piston 8, an input shaft return spring 7, an input shaft inner friction plate 9 and an input shaft outer friction plate 10 are arranged in the input transmission gear 6, and the input shaft inner friction plate 9 and the input shaft outer friction plate 10 form an input shaft clutch;
One end of the driving gear 14 of the said driving shaft has spline seat and engages with internal friction plate 16 of the driving shaft, the driving gear 14 of the driving shaft is slipped on the driving shaft 11, the driving shaft 11 is fixedly equipped with the clutch housing 19 of the driving shaft to use for installing driving shaft piston 20, driving shaft return spring 15, internal friction plate 16 of driving shaft and external friction plate 17 of driving shaft, the internal friction plate 16, 17 of driving shaft forms the clutch of driving shaft, the driving shaft 11 is also fixedly equipped with the transmission gear 22 of driving shaft engaged with output gear 24, the output gear 24 is fixedly installed on output shaft 27, the output end of the output shaft 27 connects the output shaft coupling 25 to use for outputting the power outwards;
The input shaft 5 and the output shaft 27 are coaxially arranged, an input shaft driving gear 32 meshed with a transmission shaft driving gear 21 is fixedly arranged on the input shaft 5, and the transmission shaft driving gear 21 is fixedly arranged on a transmission shaft clutch shell 19;
The input shaft 5 is supported on the box body 2 through a bearing A4 and a bearing F29, the input shaft driving gear 32 is supported on the input shaft 5 through a bearing G30 and a bearing H31, the transmission shaft 11 is supported on the box body 2 through a bearing B13 and a bearing C23, a transmission shaft oil inlet end cover 12 is arranged at one end of the transmission shaft 11, the output shaft 27 is supported on the box body 2 through a bearing D26 and a bearing E28, and a gear box bracket 33 is arranged on the box body 2;
The box body 2 is provided with a control valve 18 for sending out a clutch combination instruction and a gearbox cooler 34 for cooling the interior of the box body 2; when the control valve 18 sends out a first gear rotating speed working instruction, the input coupling 3 and the input shaft 5 drive the input transmission gear 6 to rotate, and the transmission shaft piston 20 moves to compress the inner and outer friction plates 16 and 17 of the transmission shaft, namely the transmission shaft clutch is combined; when the control valve 18 sends out a second gear rotating speed working instruction, the input shaft coupling 3 and the input shaft 5 drive the input transmission gear 6 to rotate, and the input shaft piston 8 moves to press the inner and outer friction plates 9 and 10 of the input shaft, namely the input shaft clutch is combined.
The working process of the invention comprises the following steps: when the control valve 18 sends out a first gear rotating speed working instruction, the prime mover inputs power to the gear box through the input coupling 3 and the input shaft 5, the input transmission gear 6 rotates along with the input transmission gear and drives the transmission shaft driving gear 14 meshed with the input transmission gear, at the moment, the transmission shaft piston 20 moves and presses the transmission shaft inner and outer friction plates 16 and 17 to enable the transmission shaft clutch to be combined, the transmission shaft 11 starts rotating immediately to drive the transmission shaft speed changing gear 22 fixedly arranged on the transmission shaft piston to rotate, the output gear 24 meshed with the transmission shaft speed changing gear 22 rotates along with the rotation, so that the output shaft 27 is driven to rotate, meanwhile, the input shaft piston 8 in the input transmission gear 6 withdraws under the action of the input shaft return spring 7, the input shaft inner and outer friction plates 9 and 10 are loosened, the input shaft clutch does not work, the input shaft driving gear 32 on the input shaft 5 rotates along with the transmission shaft driving gear 21, and finally the power is output outwards through the output coupling 25 at the tail end of the output shaft 27, so that the first gear rotating speed power is output is realized; when the control valve 18 sends out a second-gear rotating speed working instruction, the prime motor inputs power to the gear box through the input coupling 3 and the input shaft 5, the input transmission gear 6 rotates along with the power, at the moment, the input shaft piston 8 moves and presses the inner friction plate 9 and the outer friction plate 10 of the input shaft to enable the input shaft clutch to be combined, the input shaft driving gear 32 rotates along with the input shaft, the transmission shaft transmission gear 21 meshed with the input shaft driving gear 32 is driven to rotate, the transmission shaft 11 starts to rotate under the action of the transmission shaft clutch shell 19, the transmission shaft speed change gear 22 fixedly arranged on the transmission shaft driving gear is driven to rotate, the output gear 24 meshed with the transmission shaft speed change gear 22 rotates along with the transmission shaft driving gear, so that the output shaft 27 is driven to rotate, meanwhile, the transmission shaft piston 20 in the transmission shaft clutch shell 19 retreats under the action of the transmission shaft return spring 15, the transmission shaft inner friction plate 16 and the transmission shaft friction plate 17 are loosened, the transmission shaft clutch does not work, the transmission shaft driving gear 14 on the transmission shaft 11 idles along with the input transmission gear 6, and finally, the power is output outwards by the output coupling 25 at the tail end of the output shaft 27, and the second-gear rotating speed power is realized. Because the number of teeth of each gear is different, two different rotational speed outputs are realized under the different working condition requirements of the two sets of clutches.
It should be understood that equivalents and modifications to the technical scheme and the inventive concept of the present invention should fall within the scope of the claims appended hereto.

Claims (2)

1. The utility model provides a two kinds of rotational speed output gearboxes of concentric, includes an input shaft coupling (3) that are driven by diesel engine or motor, and this input shaft coupling (3) are connected with input shaft (5) one end of arranging in box (2), its characterized in that: the periphery of the input coupling (3) is provided with a connecting housing (1) for connecting a diesel engine or a motor, an input transmission gear (6) meshed with a transmission shaft driving gear (14) is fixedly arranged on the input shaft (5), an input shaft piston (8), an input shaft return spring (7), an input shaft inner friction plate (9) and an input shaft outer friction plate (10) are arranged in the input transmission gear (6), and the input shaft inner friction plate and the input shaft outer friction plate (9, 10) form an input shaft clutch;
One end of the transmission shaft driving gear (14) is provided with a spline seat and is meshed with a transmission shaft inner friction plate (16), the transmission shaft driving gear (14) is sleeved on the transmission shaft (11) in a sliding mode, a transmission shaft clutch shell (19) is fixedly arranged on the transmission shaft (11) and used for installing a transmission shaft piston (20), a transmission shaft return spring (15), the transmission shaft inner friction plate (16) and a transmission shaft outer friction plate (17), the transmission shaft inner friction plate and the transmission shaft outer friction plate (16, 17) form a transmission shaft clutch, a transmission shaft speed change gear (22) meshed with an output gear (24) is fixedly arranged on the transmission shaft (11), the output gear (24) is fixedly arranged on an output shaft (27), and the output end of the output shaft (27) is connected with an output coupling (25) for outputting power outwards;
the input shaft (5) and the output shaft (27) are coaxially arranged, an input shaft driving gear (32) meshed with a transmission shaft transmission gear (21) is fixedly arranged on the input shaft (5), and the transmission shaft transmission gear (21) is fixedly arranged on a transmission shaft clutch shell (19);
The box body (2) is provided with a control valve (18) for sending a clutch combination instruction and a gearbox cooler (34) for cooling the interior of the box body (2).
2. The concentric two speed output gearbox of claim 1, wherein: the input shaft (5) is supported on the box body (2) through a bearing A (4) and a bearing F (29), the input shaft driving gear (32) is supported on the input shaft (5) through a bearing G (30) and a bearing H (31), the transmission shaft (11) is supported on the box body (2) through a bearing B (13) and a bearing C (23), one end of the transmission shaft (11) is provided with a transmission shaft oil inlet end cover (12), the output shaft (27) is supported on the box body (2) through a bearing D (26) and a bearing E (28), and a gear box bracket (33) is arranged on the box body (2);
When the control valve (18) sends out a first gear rotating speed working instruction, the input coupling (3) and the input shaft (5) drive the input transmission gear (6) to rotate, and the transmission shaft piston (20) moves to press the inner friction plates and the outer friction plates (16 and 17) of the transmission shaft, namely the transmission shaft clutch is combined; when the control valve (18) sends out a second gear rotating speed working instruction, the input coupling (3) and the input shaft (5) drive the input transmission gear (6) to rotate, and the input shaft piston (8) moves to press the inner friction plates (9) and the outer friction plates (10) of the input shaft, namely the input shaft clutch is combined.
CN202010356332.9A 2020-04-29 2020-04-29 Two kinds of rotational speed output gear boxes of concentric Active CN111457065B (en)

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CN202010356332.9A CN111457065B (en) 2020-04-29 2020-04-29 Two kinds of rotational speed output gear boxes of concentric

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202010356332.9A CN111457065B (en) 2020-04-29 2020-04-29 Two kinds of rotational speed output gear boxes of concentric

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CN111457065B true CN111457065B (en) 2024-07-05

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Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN212360674U (en) * 2020-04-29 2021-01-15 杭州萧山江南通用机械有限公司 Concentric two-speed output gear box

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008124001A1 (en) * 2007-04-06 2008-10-16 Borgwarner Inc. Dual clutch transmission
CN202624618U (en) * 2012-05-18 2012-12-26 杭州前进齿轮箱集团股份有限公司 Secondary moderative especially-big speed ratio marine gearbox
CN106090131B (en) * 2016-08-24 2018-07-31 杭州萧山江南通用机械厂 A kind of fuel and electric hybrid input gear case
CN106542072A (en) * 2016-12-27 2017-03-29 中国船舶重工集团公司第七研究所 A kind of boat diesel engine thrust power module
CN109854689B (en) * 2019-01-31 2024-05-10 浙江海天机械有限公司 Internal support type gear shifting mechanism gearbox
CN110131390B (en) * 2019-05-27 2024-01-26 杭州萧山江南通用机械有限公司 Gear box for oil-electricity hybrid power input ship
CN110778664A (en) * 2019-10-17 2020-02-11 陈王龙 Transmission transfer case of amphibious vehicle

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN212360674U (en) * 2020-04-29 2021-01-15 杭州萧山江南通用机械有限公司 Concentric two-speed output gear box

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