A gearbox that reduces or increases speed
By designing a gear box including box, input shaft, control valve and output shaft, the clutch, reduction and speed growth functions are integrated, and the problem of single function of the existing gear box is solved and the water jet propulsion of high-speed ships is met The pump's high speed requirements provide a simple structure solution.
Patent Information
- Application Number
- CN201910905810.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2019-09-24
- Publication Date
- 2025-01-03
- Estimated Expiration
- 2039-09-24
AI Technical Summary
The existing gearbox has a single function, and cannot achieve clutch, deceleration and speed growth functions at the same time, and cannot meet the high speed requirements of water jet propulsion pumps in high-speed ships.
A gear box including a box, input shaft, control valve and output shaft is designed. Through the meshing of the driving gear and the driven gear, combined with a clutch and a dual oil pump, the control valve controls the internal and external friction plates to achieve clutch, reduce speed and increase. The speed function is integrated and the high elastic coupling is used to ensure the high-speed and stable rotation of the output shaft.
It realizes multiple integration of gearbox functions, meets the working conditions requirements of high-speed ship water jet propulsion pumps, and provides a simple structure solution suitable for high-speed ships and other gearbox transmission fields.
Smart Images
Figure CN110725896B_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the field of gearbox transmission, and in particular to a gearbox for reducing or increasing speed. Background Art
[0002] High-speed ships engaged in water passenger transport or entertainment have high requirements for the hull travel speed, and often use water jet propulsion pumps instead of traditional propellers as power devices. The use of water jet propulsion pumps puts higher requirements on traditional gearboxes. Existing gearboxes usually have relatively simple functions, only simple clutch gearboxes that use clutches to achieve clutch functions, or clutch reduction gearboxes that combine clutches and gears. There is no multifunctional gearbox that can integrate clutch, reduction and speed increase functions. Summary of the invention
[0003] The purpose of the present invention is to overcome the shortcomings of the prior art and provide a speed reducing or speed increasing gearbox having the advantages of simple structure, integrating the clutch and speed increasing and decreasing of the gearbox, and meeting the working requirements of the water jet propulsion pump.
[0004] The objective of the present invention is achieved through the following technical solutions: the gearbox for speed reduction or speed increase mainly comprises a housing, an input shaft, a control valve and an output shaft, wherein the upper part of the housing is fixed with a control valve; an input coupling driven by a diesel engine or a motor is fixed on the input end of the input shaft, a driving gear is fixed on the input shaft, one end of the driving gear is provided with a clutch seat for mounting an inner friction plate, a clutch housing is fixed on the input shaft, an outer friction plate, a piston and a return spring are mounted in the clutch housing, the piston and the return spring are tightly attached to the input shaft, the inner and outer friction plates form a clutch and are controlled by the control valve; the driving gear is meshed with a driven gear fixed on the output shaft; one end of the output shaft is provided with an output coupling for outputting power.
[0005] Furthermore, the input shaft is supported on the housing by bearings B and C, and the output shaft is supported on the housing by bearings A and D. The rear end of the input shaft is connected to the duplex oil pump through the input rear end cover. One of the duplex oil pumps is controlled by a control valve to transport the working oil from the input rear end cover and the oil channel of the input shaft to the clutch, pushing the piston and pressing the inner and outer friction plates, that is, the clutch is engaged, so that the driving gear rotates and drives the driven gear to rotate together, and the output shaft rotates accordingly and outputs power through the output coupling, so that the equipment connected to the rear of the output coupling works; the other oil pump in the duplex oil pump is used for the work of the rear connected equipment.
[0006] Furthermore, the output coupling on the output shaft adopts a high-elastic coupling to ensure that the output shaft rotates smoothly at high speed.
[0007] The beneficial effects of the present invention are: the clutch, speed-up or speed-down functions of the gearbox are effectively integrated, and the output shaft is arranged in opposite directions to the input shaft, so that high-speed operation can be achieved while meeting the working conditions of the water jet propulsion pump used on high-speed ships; it can be widely used in high-speed ships or other gearbox transmission fields. BRIEF DESCRIPTION OF THE DRAWINGS
[0008] Figure 1 It is a structural schematic diagram of the present invention.
[0009] Figure 2 for Figure 1 AA section view in.
[0010] Explanation of the accompanying drawings: housing 1, bearing A2, input coupling 3, bearing B4, input shaft 5, driving gear 6, return spring 7, control valve 8, inner friction plate 9, outer friction plate 10, piston 11, bearing C12, input rear end cover 13, duplex oil pump 14, output coupling 15, clutch housing 16, bearing D17, output shaft 18, driven gear 19. DETAILED DESCRIPTION
[0011] The present invention will be described in detail below with reference to the accompanying drawings:
[0012] Embodiment: As shown in the accompanying drawings, this deceleration or acceleration gearbox mainly includes a box body 1, an input shaft 5, a control valve 8 and an output shaft 18. The control valve 8 is fixedly installed on the upper part of the box body 1; the input coupling 3 driven by a diesel engine or a motor is fixed on the input end of the input shaft 5, and a driving gear 6 is fixedly installed on the input shaft 5. One end of the driving gear 6 has a clutch seat for installing an inner friction plate 9. A clutch housing 16 is fixedly installed on the input shaft 5. An outer friction plate 10, a piston 11 and a return spring 7 are installed in the clutch housing 16. The piston 11 and the return spring 7 are tightly attached to the input shaft 5. The inner and outer friction plates 9 and 10 form a clutch and are controlled by the control valve 8; the driving gear 6 is meshed with a driven gear 19 fixedly installed on the output shaft 18; one end of the output shaft 18 is equipped with an output coupling. 15 is used to output power; the input shaft 5 is supported on the housing 1 through bearings B and C4, 12, and the output shaft 18 is supported on the housing 1 by bearings A and D2, 17. The rear end of the input shaft 5 is connected to the double oil pump 14 through the input rear end cover 13. The control valve 8 controls one of the double oil pumps 14 to transport the working oil from the input rear end cover 13 and the oil channel of the input shaft 5 to the clutch, pushing the piston 11 and pressing the inner and outer friction plates 9, 10, that is, the clutch is engaged, so that the driving gear 6 rotates and drives the driven gear 19 to rotate together, and the output shaft 18 rotates accordingly and outputs power through the output coupling 15, so that the water jet propulsion pump connected to the rear of the output coupling 15 works, driving the ship to move forward at high speed; the other oil pump in the double oil pump 14 is used for the water jet propulsion pump to work.
[0013] Preferably, the input shaft 5 is arranged in parallel with the output shaft 18, and is directly driven by the driving gear 6 and the driven gear 19 to achieve opposite rotation of the output shaft and the input shaft, thereby meeting the working requirements of the water jet propulsion pump on the high-speed boat.
[0014] Preferably, the output coupling 15 on the output shaft 18 adopts a high-elastic coupling to ensure that the output shaft 18 rotates smoothly at high speed.
[0015] The working process of the present invention is as follows: the diesel engine or the motor inputs power to the input coupling 3, and the control valve 8 controls the working oil to be delivered from the double oil pump 14 to the clutch, pushing the piston 11 and pressing the inner and outer friction plates 9 and 10, so that the clutch is engaged, and the driving gear 6 on the input shaft 5 connected to the input coupling 3 is transmitted to the driven gear 19, and the output shaft 18 connected to the driven wheel rotates accordingly, and drives the water jet propulsion pump connected to the rear of the output coupling 15 to work, so that the ship can move forward at high speed, and the driving gear 6 and the driven gear 19 are used to achieve deceleration or acceleration; the clutch is disengaged by controlling the control valve 8, and the driving gear 6 and the driven gear 19 are separated to achieve stop transmission.
[0016] It is understandable that, for those skilled in the art, any equivalent replacement or change to the technical solution and inventive concept of the present invention should fall within the protection scope of the claims attached to the present invention.
Claims
1. A gearbox for speed reduction or speed increase, characterized in that: The invention comprises a housing (1), an input shaft (5), a control valve (8) and an output shaft (18), wherein the control valve (8) is fixedly mounted on the upper part of the housing (1); an input coupling (3) driven by a diesel engine or a motor is fixed on the input end of the input shaft (5); a driving gear (6) is fixedly mounted on the input shaft (5); one end of the driving gear (6) is provided with a clutch seat for mounting an inner friction plate (9); a clutch housing (16) is fixedly mounted on the input shaft (5); an outer friction plate (10), a piston (11) and a return spring (7) are mounted inside the clutch housing (16); the piston (11) and the return spring (7) are closely attached to the input shaft (5); the inner and outer friction plates (9, 10) form a clutch and are controlled by the control valve (8); the driving gear (6) is meshed with a driven gear (19) fixedly mounted on the output shaft (18); one end of the output shaft (18) is provided with an output coupling (15) for outputting power; The input shaft (5) is supported on the housing (1) through bearings B and C (4, 12), and the output shaft (18) is supported on the housing (1) through bearings A and D (2, 17). The rear end of the input shaft (5) is connected to the double oil pump (14) through the input rear end cover (13). The control valve (8) controls one of the double oil pumps (14) to transport the working oil from the input rear end cover (13) and the oil passage of the input shaft (5) to the clutch, pushing the piston (11) and pressing the inner and outer friction plates (9, 10), that is, the clutch is engaged, so that the driving gear (6) rotates and drives the driven gear (19) to rotate together, and the output shaft (18) rotates accordingly and outputs power through the output coupling (15), so that the equipment connected to the rear of the output coupling (15) works; the other oil pump in the double oil pump (14) is used for the rear connected equipment to work; The output coupling (15) on the output shaft (18) adopts an elastic coupling to ensure that the output shaft (18) rotates smoothly at high speed.