CN210423671U - Gear drive mechanical oil pump system structure - Google Patents

Abstract

The utility model discloses a gear drive machinery oil pump system architecture, it includes that box, lid are located apron on the box, locate in the box and lean on the input shaft of last position, connect in the input shaft with first bearing and second bearing between the box, connect on the apron and the cover is located oil blanket on the input shaft, locate the drive gear train in the box and locate the output shaft below and pass through the drive gear train with the mechanical pump assembly that the output shaft looks transmission is connected. The utility model discloses a change the idler and can realize the regulation of gear train drive ratio, mechanical pump assembly installs in the box lower part, is close to the oil tank, and the oil absorption route is shorter, and loss of pressure is less, and the independent assembly of mechanical pump assembly, easily installs and removes, is suitable for batch production.

Description

Gear drive mechanical oil pump system structure

Technical Field

The utility model belongs to the transmission equipment field, in particular to gear drive machinery oil pump system structure.

Background

In the transmission case of the hybrid electric vehicle, an engine, double motors, a wet clutch and a hydraulic parking mechanism are mainly integrated. The heating power of the motor is large, the wet clutch is separated, combined and cooled, the parking mechanism is actuated, and the gear shaft, the bearing and the like in the gearbox are cooled and lubricated by hydraulic oil. At present, in a hybrid transmission, oil can be supplied by a single pump, namely, by an electronic pump, and also can be supplied by double pumps, namely, by the electronic pump and a mechanical pump. The gearbox adopts the technical scheme that an electronic pump and a mechanical pump are used for supplying oil, the electronic pump cannot be started under the condition of extreme low temperature, the mechanical pump plays a warming-up function, an engine drives the mechanical pump through an input shaft and a transmission gear train, the mechanical pump supplies oil to the whole hydraulic system, and the electronic pump intervenes after the temperature rises; and under the mixed gear, the mechanical pump and the electronic pump work simultaneously.

Disclosure of Invention

The utility model aims at providing a simple structure, install and remove convenient, the gear drive machinery oil pump system structure of adaptable hybrid transmission hydraulic pressure fuel feeding.

In order to achieve the above purpose, the utility model adopts the technical scheme that: a gear transmission mechanical oil pump system structure comprises a box body, a cover plate arranged on the box body, an input shaft arranged in the box body and close to the upper position, a first bearing and a second bearing connected between the input shaft and the box body, an oil seal connected on the cover plate and sleeved on the input shaft, a transmission gear train arranged in the box body, and a mechanical pump assembly arranged below an output shaft and in transmission connection with the output shaft through the transmission gear train, wherein a first blocking shoulder used for limiting is arranged in the box body and positioned between the first bearing and the second bearing, the second bearing is connected with the input shaft through a first blocking shoulder and a first limiting ring set clamped on the inner side wall of the input shaft and the box body, the first bearing is connected with the input shaft through a first limiting ring, the transmission gear train comprises an input gear fixedly connected with the input shaft, and a second bearing fixedly connected with the input shaft is arranged on the input shaft and a second limiting ring set clamped on the inner side wall of the box, The driving gear is in transmission connection with the input gear and is rotationally connected with an idler wheel on the box body, and the driving gear is in transmission connection with the idler wheel and is fixedly sleeved on an assembly shaft of the mechanical pump assembly.

Preferably, the idler wheel is rotationally connected in the box body through a ball bearing, and the limit of the box body and the idler wheel is realized through a second limit ring set.

Preferably, the driving gear realizes axial limiting through the second limiting ring and the second protrusion on the assembly shaft.

Because of the application of the technical scheme, compared with the prior art, the utility model has the following advantages: the utility model discloses a change the idler and can realize the regulation of gear train drive ratio, mechanical pump assembly installs in the box lower part, is close to the oil tank, and the oil absorption route is shorter, and loss of pressure is less, and the independent assembly of mechanical pump assembly, easily installs and removes, is suitable for batch production.

Drawings

FIG. 1 is a front view of the present invention;

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

Detailed Description

The invention will be further described with reference to examples of embodiments shown in the drawings.

As shown in fig. 1 and 2, the gear-driven mechanical oil pump system structure includes a box 1, a cover plate 3 covering the box 1, an input shaft 5 disposed in the box 1 and located at an upper position, a first bearing 10 and a second bearing 7 connected between the input shaft 5 and the box 1, an oil seal 4 connected to the cover plate 3 and sleeved on the input shaft 5, a transmission gear train disposed in the box 1, and a mechanical pump assembly 22 disposed below the output shaft 5 and in transmission connection with the output shaft 5 through the transmission gear train, wherein a first shoulder 26 for limiting is disposed inside the box 1 and between the first bearing 10 and the second bearing 7, the second bearing 7 is connected with the input shaft 5 through the first shoulder 26 and a first limit ring set (6,8) clamped on inner side walls of the input shaft 5 and the box 1, the first bearing 10 is connected with the input shaft 5 through a first protrusion 27 on the first limit ring 9 and the input shaft 5 and a first protrusion 27 on the input shaft 5 5, the transmission gear train comprises an input gear 12 fixedly connected with the input shaft 5, an idle gear 13 in transmission connection with the input gear 12 and rotationally connected to the box body 1, and a driving gear 20 in transmission connection with the idle gear 13 and fixedly sleeved on an assembly shaft 18 of the mechanical pump assembly 22. The idle wheel 13 is rotatably connected in the box body 1 through a ball bearing 15 and is limited with the box body 1 and the idle wheel 13 through a second limit ring set (14, 16). The driving gear 20 is axially limited by the second limit ring 21 and the second protrusion 17 on the assembly shaft 18.

In this embodiment, the box body 1 is a fixed part; the cover plate 3 is fixed on the box body 1 through a first bolt 2; the input shaft 5 penetrates through the cover plate 1 and the inner shaft hole of the box body 3, two ends of the input shaft are supported by a first bearing 10 and a second bearing 7, the outer diameter of the second bearing 7 is matched with the box body 1, the inner diameter of the second bearing is matched with the input shaft 5, one end of the second bearing is limited by a first retaining shoulder 26 of the box body 1, the other end of the second bearing is limited by a first limiting ring group (6,8), the outer diameter of the bearing 10 is matched with the box body 1, the inner diameter of the bearing is matched with the input shaft 5, one end of the bearing is limited by a first bulge 27 of the input; the oil seal 4 is arranged between the cover plate 3 and the input shaft 5, the outer diameter of the oil seal is matched with the shaft hole of the cover plate 3, and the inner diameter of the oil seal is matched with the diameter of the input shaft and is used for sealing oil; the transmission gear train mainly comprises an input gear 12, an idler gear 13 and a drive gear 20, wherein the inner diameter of the input gear 12 is pressed on the input shaft 5 in an interference fit manner, one end of the input gear is limited by a shoulder of the input shaft 5, and the other end of the input gear is limited by a clamping ring 11 and has the same rotating speed as the input shaft 5; the idle gear 13 is meshed with the input gear 12, the inner diameter of the idle gear 13 is matched with the ball bearing 15, the ball bearing 15 is pressed on a boss of the box body 1 in an interference fit mode, one end of the ball bearing is limited by a shoulder of the idle gear 13, and the other end of the ball bearing is limited by clamping rings (14, 16); the driving gear 20 is meshed with the idle gear 13, the driving gear 20 is arranged on the assembly shaft 18 in an interference pressing mode, one end of the driving gear is limited by the second bulge 17 of the assembly shaft 18, and the other end of the driving gear is limited by the snap ring 21; the mechanical pump assembly is connected with the box body 1 through a second bolt 23, an assembly shaft 18 of the mechanical pump assembly 22 is matched with the inner diameter of a driving gear 20, and the driving gear 20 transmits the energy of the input shaft 5 to the assembly shaft 18 to drive the mechanical pump assembly 22 to work; the mechanical pump assembly 22 is provided with an oil inlet 24 and an oil outlet 25 which are arranged on the box body 1, so that the oil suction and pumping functions of the mechanical pump are realized.

The engine is connected with the input shaft 5, the engine rotates to drive the input shaft 5 to rotate, the input gear 12 is installed on the input shaft 5, the input gear 12 rotates with the shaft, the input gear 12 is meshed with the idle gear 13, the idle gear 13 is meshed with the driving gear 20, the idle gear 13 rotates with the driving gear 20, the driving gear 20 is installed on the shaft of the mechanical pump assembly 22, the shaft of the mechanical pump assembly 22 rotates, the gear inside the mechanical pump assembly rotates with the shaft, namely the mechanical pump assembly realizes that the oil suction port 24 sucks oil from the oil collecting tank, the oil outlet 25 discharges oil to the hydraulic valve plate, and the supply of hydraulic oil in the whole tank is completed.

The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose of the embodiments is to enable people skilled in the art to understand the contents of the present invention and to implement the present invention, which cannot limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered by the protection scope of the present invention.

Claims (3)

1. The utility model provides a gear drive machinery oil pump system structure which characterized in that: the mechanical pump assembly comprises a box body, a cover plate arranged on the box body in a covering mode, an input shaft arranged in the box body and close to the upper position, a first bearing and a second bearing connected between the input shaft and the box body, an oil seal connected to the cover plate and sleeved on the input shaft, a transmission gear train arranged in the box body, and a mechanical pump assembly arranged below the output shaft and in transmission connection with the output shaft through the transmission gear train, wherein a first blocking shoulder used for limiting is arranged inside the box body and located between the first bearing and the second bearing, the second bearing is connected with the input shaft through a first blocking shoulder and a first limiting ring set clamped on the inner side wall of the input shaft and the box body, the first bearing is connected with the input shaft through a first limiting ring, the transmission gear train comprises an input gear fixedly connected with the input shaft, and a second bearing, The driving gear is in transmission connection with the input gear and is rotationally connected with an idler wheel on the box body, and the driving gear is in transmission connection with the idler wheel and is fixedly sleeved on an assembly shaft of the mechanical pump assembly.

2. The geared mechanical oil pump system structure according to claim 1, characterized in that: the idler wheel is rotationally connected in the box body through a ball bearing and achieves limiting with the box body and the idler wheel through a second limiting ring set.

3. The geared mechanical oil pump system structure according to claim 1, characterized in that: and the driving gear realizes axial limiting through a second limiting ring and a second bulge on the assembly shaft.

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