CN209892696U

CN209892696U - Bevel transmission marine gearbox

Info

Publication number: CN209892696U
Application number: CN201822134785.8U
Authority: CN
Inventors: 陈王龙
Original assignee: Hangzhou xiaoshan jiangnan general machinery factory
Current assignee: Hangzhou xiaoshan jiangnan general machinery factory
Priority date: 2018-12-19
Filing date: 2018-12-19
Publication date: 2020-01-03
Anticipated expiration: 2028-12-19

Abstract

A gearbox for an oblique angle transmission ship comprises a box body, an input part, a transmission part and an output part, wherein a forward driving transmission gear, a clutch and a loop forward driving gear are fixed on an input shaft of the input part; a reverse drive gear is fixed on a drive shaft of the drive component, and a reverse clutch and a loop reverse drive gear are installed on the reverse drive gear; an output gear which is respectively meshed with the forward driving gear and the reverse driving gear is fixed on an output shaft of the output part; the forward driving transmission gear and the reverse driving transmission gear are cylindrical gears and are meshed with each other; the output shaft, the input shaft and the transmission shaft are arranged in an oblique angle, wherein a forward driving gear on the input shaft is a conical gear, an output gear on the output shaft and a reverse driving gear on the transmission shaft are two cylindrical helical gears with different helical angles, and a gear pair is formed; the forward driving gear and the output gear are meshed with the cylindrical helical gear through the conical gear.

Description

Bevel transmission marine gearbox

Technical Field

The utility model relates to a have separation and reunion and speed reduction or acceleration rate and have certain angle between output shaft and the input shaft, can bear the marine gear box of oblique angle transmission of axial thrust simultaneously, belong to a marine power transmission of transmission power.

Background

The gearbox often needs according to the demand in market, and the marine gearbox that can satisfy requirements such as speed reduction or acceleration rate is designed correspondingly, if for satisfying the requirement that high-speed boat can high-speed motion on water to satisfy hydrodynamics and hull and arrange, make diesel engine, gearbox horizontal arrangement in the cabin, and the hull need become certain angle with the surface of water when high-speed motion on water, in order to satisfy this condition, the output shaft of gearbox must be designed into certain angle, also is the oblique angle transmission gearbox.

The existing bevel transmission gear box usually adopts bevel gear transmission, and in order to realize clutch and speed reduction or acceleration, six gears of four shafts are often adopted for meshing transmission, for example, the first shaft is made into an inclined structure, and the rear three shafts are mutually parallel. There is therefore no gearbox which enables the gears on the three shafts to be made directly intermeshable and the input and output shafts to be angled.

Disclosure of Invention

An object of the utility model is to overcome the not enough of prior art existence, and provide a structural arrangement is reasonable, compact, and transmission efficiency is high, light in weight, the marine gear box of oblique angle transmission of an angle is become with horizontally diesel engine, gear box input shaft to the gear box output shaft.

The utility model aims at completing the gear box for the bevel transmission ship by the following technical scheme, which comprises a box body, an input component, a transmission component and an output component, wherein a forward driving transmission gear, a clutch and a loop forward driving gear are fixed on an input shaft of the input component; a reverse drive gear is fixed on a drive shaft of the drive component, and a reverse clutch and a loop reverse drive gear are installed on the reverse drive gear; an output gear which is respectively meshed with the forward driving gear and the reverse driving gear is fixed on an output shaft of the output part; the forward driving transmission gear and the reverse driving transmission gear are cylindrical gears and are meshed with each other; the output shaft, the input shaft and the transmission shaft are arranged in an oblique angle, wherein a forward driving gear on the input shaft is a conical gear, an output gear on the output shaft and a reverse driving gear on the transmission shaft are two cylindrical helical gears with different helical angles, and a gear pair is formed; the forward driving gear and the output gear are meshed with the cylindrical helical gear through the conical gear.

Preferably, the method comprises the following steps: the end part of a forward driving transmission gear in the input component is provided with a clutch shell, a piston and an outer friction plate are arranged in the clutch shell, an input shaft is simultaneously provided with a return spring, a return spring seat and a grinding sheet, and the end part of a forward driving gear which is arranged on the input shaft in a hollow way is provided with a first inner friction plate; the end part of a reversing transmission gear fixedly arranged on a transmission shaft in the transmission part is provided with a reversing clutch shell, an outer friction plate and a reversing piston are arranged in the reversing clutch shell, and a second inner friction plate is arranged at the end part of a reversing driving gear; the input shaft is supported on the box body and the box cover by a bearing and a bearing, and one end of the input shaft is connected with the input shaft coupling; an oil pump is mounted at the end part of the transmission shaft; the output shaft is connected with a working propeller through an output coupling connected with one end part.

The utility model belongs to the breakthrough to prior art, it can utilize different centre-to-centre spacing gear principle and the meshing transmission principle of crossing shaft gear to satisfy the input shaft to the gear box with simplest mode, the axle of falling the car, and the requirement of output shaft slope. The gears on the three shafts can be meshed with each other to effectively work, the requirement that the high-speed boat inclines with the water surface when the high-speed boat travels on the water at a high speed is met, the diesel engine and the gear box are horizontally arranged in the cabin, the output shaft of the gear box is output at a certain oblique angle, the structure is reliable, the process is easy to implement, and the high-speed boat has the characteristics of reasonable and compact structural arrangement, high transmission efficiency, light weight and the like.

Drawings

Fig. 1 is a schematic side view of the present invention.

Fig. 2 is a sectional view a-a of fig. 1.

Fig. 3 is a schematic structural diagram of the transmission component of the present invention.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings: fig. 1 shows that the gear box for the bevel transmission ship of the present invention comprises a box body 6, an input component, a transmission component and an output component, wherein a forward driving gear 7, a clutch and a loop forward driving gear 14 are installed on an input shaft 4 of the input component; a reverse drive gear 25, a reverse clutch and a loop reverse drive gear 31 are fixed on a drive shaft 38 of the drive component; an output gear 19 which is respectively meshed with the forward driving gear 14 and the reverse driving gear 31 is fixed on an output shaft 21 of the output part; the method is characterized in that: the input shaft 4 and the transmission shaft 38 are arranged in parallel, and the forward transmission gear 7 and the reverse transmission gear 25 are cylindrical gears and are meshed with each other; the output shaft 21, the input shaft 4 and the transmission shaft 38 are arranged in an oblique angle, wherein the forward driving gear 14 on the input shaft 4 is a conical gear, and the output gear 19 on the output shaft 21 and the reverse driving gear 31 on the transmission shaft 38 are two cylindrical helical gears with different helical angles and form a gear pair; the forward driving gear 14 and the output gear 19 are meshed with the cylindrical helical gear through a conical gear.

The end part of a forward drive gear 7 in the input component is provided with a clutch shell, a piston 8 and an outer friction plate 9 are arranged in the clutch shell, a return spring 11, a return spring seat 12 and

abrasive sheets

13 and 18 are simultaneously arranged on the input shaft 4, and a first inner friction plate 10 is arranged at the end part of a forward drive gear 14 which is arranged on the input shaft 4 in an empty sleeve way; the end part of a reversing transmission gear 25 fixedly mounted on a transmission shaft 38 in the transmission part is provided with a reversing clutch shell, an outer friction plate 27 and a reversing piston 26 are mounted in the reversing clutch shell, and a second inner friction plate 28 is mounted at the end part of a reversing driving gear 31; the input shaft 4 is supported on the box body 6 and the box cover 23 by a bearing 5 and a bearing 16, and one end of the input shaft is connected with the input shaft coupling 1; an oil pump 40 is mounted at the end of the transmission shaft 38; the output shaft 21 is connected to the working propeller via an output coupling 22 connected at one end.

When the control handle of the control valve 40 is arranged in the same direction as the parking space, the gear box working oil enters the piston 8 through the vehicle following working oil hole 15, and at the moment, the piston presses the outer friction plate 9 in the clutch shell at the vehicle following transmission gear end and the first inner friction plate 10 at the end part of the vehicle following driving gear. The power from the diesel engine is transmitted to a driven gear 19 meshed with the clutch through an input coupling 1, an input shaft 4, an outer friction plate 9 in the clutch at the end part of a forward driving gear 7, a first inner friction plate 10 on the end part of a forward driving gear, and a forward driving gear 14, and is transmitted to a propeller to work through an output shaft 21 and an output coupling 22.

When the control valve handle is in the forward working position, the reverse working oil is cut off, the reverse piston 26 retracts the reverse piston 26 through the return spring 29 supported under the action of the return spring seat 30, the reverse driving gear and the driven gear are constantly meshed, the reverse driving gear can be driven by the driven gear to rotate reversely during the forward working, and the axial component force of the reverse gear is borne by the bearing sheet 32 and the bearing sheet 37.

When the handle of the control valve 40 is set to the reverse position, the gearbox working oil enters the reverse piston 26 through the reverse working oil hole 34, and the reverse piston 26 presses the outer friction plate 27 and the second inner friction plate 28 tightly. The power from the diesel engine is transmitted to the reverse drive gear 25 through the input coupling 1, the input shaft 4, the forward drive gear 7, the outer friction plate 27 in the clutch at the end part of the reverse drive gear, the second inner friction plate 28 at the end part of the reverse drive gear, the reverse drive gear 31 is transmitted to the driven gear 19 meshed with each other, and the output coupling 22 is transmitted to the propeller to work through the output shaft 21. When the control valve handle is at a reverse operation position, forward operation oil is cut off, and the forward piston 8 retracts by the return spring 11 under the action of the return spring seat 12 through the support. Because the driving gear and the driven gear are normally engaged, the driving gear can be driven by the driven gear to rotate reversely during backing, and the axial component force of the driving gear is borne by the wear-resisting disc 13 and the wear-resisting disc 18.

The utility model discloses accomplished by a diesel engine or motor power input (prime mover), through clutch and driving gear, drive gear, output gear and output shaft on the input shaft reaches, power take off. An input shaft on the gear box is connected with a flywheel of the diesel engine, namely the input shaft of the gear box and the diesel engine are on the same axis. The key driving gear is made into a conical gear by a cylindrical gear, so that the original parallel gear meshing line, gear top circle and gear root circle are inclined after being meshed with the output gear.

The axis of the output shaft is parallel to the meshing line, the addendum circle and the dedendum circle of the driving gear of the cone. The output shaft gear is made into a bevel gear according to gear displacement, the output shaft gear is made into a normal cylindrical gear, the output shaft gear and the input shaft gear can be normally meshed, and the axis of the input shaft and the axis of the output shaft form an angle.

The reversing shaft is designed normally and is parallel, and the transmission gear on the reversing shaft can be normally meshed with the transmission gear on the parallel input shaft. The driving gear on the reversing axle is based on the principle of cylindrical gear crossed axle helical gear transmission, i.e. the principle that two helical gears with different helical angles form a gear pair, and the axes of the two gears can form any angle. The helix angle of the gear is increased by a crossing angle from the originally determined helix angle, so that the gear can be meshed normally, and the same is true according to the actual trial-and-error condition.

Claims

1. A gearbox for an oblique angle transmission ship comprises a box body, an input component, a transmission component and an output component, wherein a forward driving transmission gear (7), a clutch and a loop forward driving gear (14) are fixed on an input shaft (4) of the input component; a reverse drive transmission gear (25), a reverse clutch and a loop reverse driving gear (31) are fixed on a transmission shaft (38) of the transmission part; an output gear (19) which is respectively meshed with the forward driving gear (14) and the reverse driving gear (31) is fixed on an output shaft (21) of the output component; the method is characterized in that: the input shaft (4) and the transmission shaft (38) are arranged in parallel, and the forward transmission gear (7) and the reverse transmission gear (25) are cylindrical gears and are meshed with each other; the output shaft (21), the input shaft (4) and the transmission shaft (38) are arranged in an oblique angle, wherein a forward driving gear (14) on the input shaft (4) is a conical gear, an output gear (19) on the output shaft (21) and a reverse driving gear (31) on the transmission shaft (38) are two cylindrical helical gears with different helical angles and form a gear pair; the forward driving gear (14) and the output gear (19) are meshed with the cylindrical helical gear through a conical gear.

2. A bevel transmission marine gearbox according to claim 1 in which the end of the forward drive gear (7) in the input member carries a clutch housing, the clutch housing carries a piston (8) and an outer friction plate (9), the input shaft (4) carries a return spring (11), a return spring seat (12) and friction bearing plates (13, 18) simultaneously, the end of the forward drive gear (14) mounted on the input shaft (4) in a hollow manner carries a first inner friction plate (10); a reversing transmission gear (25) fixedly mounted on a transmission shaft (38) in the transmission part is provided with a reversing clutch shell at the end, an outer friction plate (27) and a reversing piston (26) are mounted in the reversing clutch shell, and a second inner friction plate (28) is mounted at the end of a reversing driving gear (31); the input shaft (4) is supported on the box body (6) and the box cover by bearings (5, 16), and one end of the input shaft is connected with the input shaft coupling (1); an oil pump (40) is mounted at the end part of the transmission shaft (38); the output shaft (21) is connected with a working propeller through an output coupling (22) connected with one end part.