CN212804098U

CN212804098U - Power takeoff for new energy vehicle

Info

Publication number: CN212804098U
Application number: CN202021570624.4U
Authority: CN
Inventors: 王巧扣
Original assignee: Zhejiang Baishi Ruipawa Drive Co ltd
Current assignee: Zhejiang Baishi Ruipawa Drive Co ltd
Priority date: 2020-07-31
Filing date: 2020-07-31
Publication date: 2021-03-26
Anticipated expiration: 2030-07-31

Abstract

A power takeoff for a new energy vehicle includes a housing, an input device disposed in the housing, an output device disposed in the housing, and a drive device disposed in the housing. The input device comprises a fixed shaft penetrating through the shell, an input gear sleeved on the fixed shaft and a transmission gear sleeved on the fixed shaft and fixedly connected with the input gear. The output device comprises an output shaft penetrating through the shell, an output gear sleeved on the output shaft, at least one limiting guide groove circumferentially arranged on the outer side of the output shaft and axially arranged along the output shaft, and at least one limiting tooth arranged on the inner wall of the output gear and correspondingly inserted into the limiting guide groove. This a power takeoff for new energy vehicle has simplified last shelves structure, and the tooth mode of stepping up through sliding tooth combines the cooperation spigot surface, effectively avoids stepping up the shelves and beats the tooth phenomenon.

Description

Power takeoff for new energy vehicle

Technical Field

The utility model belongs to the technical field of machinery, especially a power takeoff for new forms of energy car.

Background

The PTO, an acronym of Power Take Off, is one or more sets of speed change gears, also called Power Take-Off, which is generally composed of a gear box, a clutch, and a controller, and is connected with a low-gear or an auxiliary box output shaft of a gearbox to output Power to an external working device.

When the conventional internal combustion engine vehicle shifts up the power takeoff, the power must be interrupted, so that the rotating speed of a gearbox of the conventional internal combustion engine vehicle is 0, otherwise, the problem of gear beating of the power takeoff gear occurs. The existing power takeoff finishes power output by controlling the disconnection and combination of a spline gear sleeve output gear through a cylinder piston, and when the power takeoff is applied to a new energy vehicle, the power takeoff is large in structure volume and poor in matching property with the new energy vehicle.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model provides a power takeoff for new forms of energy car to solve above-mentioned problem.

A power takeoff for a new energy vehicle includes a housing, an input device disposed in the housing, an output device disposed in the housing, and a drive device disposed in the housing. The input device comprises a fixed shaft penetrating through the shell, an input gear sleeved on the fixed shaft and a transmission gear sleeved on the fixed shaft and fixedly connected with the input gear. The output device comprises an output shaft penetrating through the shell, an output gear sleeved on the output shaft, at least one limiting guide groove circumferentially arranged on the outer side of the output shaft and axially arranged along the output shaft, and at least one limiting tooth arranged on the inner wall of the output gear and correspondingly inserted into the limiting guide groove. The driving device comprises a driving cylinder, a shifting fork driven by the driving cylinder and an annular sleeve arranged on one side of the output gear and connected with the shifting fork.

Further, the housing includes a housing, a mounting chamber disposed in the housing, and an input port and an output port disposed on both sides of the housing, respectively.

Further, the input device is arranged at the input port, and the input gear and the transmission gear are of an integrated structure.

Further, the outer wall of the input gear is provided with an oblique outer gear part.

Furthermore, the side walls of the tooth parts at the opposite sides of the transmission gear and the output gear are provided with matching guide surfaces with low middle convex edges and inverted sharp corners.

Further, an included angle of the adjacent external teeth of the output gear far away from the output gear is larger than an included angle of the adjacent external teeth of the output gear close to the output gear.

Further, the outer diameter of the transmission gear is smaller than that of the output gear.

Furthermore, one end of the output shaft is provided with an output matching part which penetrates out of the output port.

Furthermore, an input bearing positioned on the inner side of the input gear and the transmission gear is sleeved on the fixed shaft.

Furthermore, the output shaft is sleeved with two output bearings which are embedded on the shell at intervals.

Compared with the prior art, the utility model provides a pair of a power takeoff for new energy vehicle can accurately set up lower last shelves rotational speed when last shelves, but direct drive output gear carries out last shelves, has simplified last shelves structure, makes internally mounted structure compacter, processes simple and convenient good reliability, more is applicable to the new energy vehicle through the last shelves mode of the tooth that slides, through cooperation spigot surface structure, effectively avoids last shelves to beat the tooth phenomenon.

Drawings

Fig. 1 is a schematic structural diagram of a power takeoff for a new energy vehicle provided by the utility model.

Fig. 2 is a schematic view of a connection structure of an output shaft and an output gear of the power takeoff for the new energy vehicle in fig. 1.

Detailed Description

Specific examples of the present invention will be described in further detail below. It should be understood that the description herein of embodiments of the invention is not intended to limit the scope of the invention.

Please refer to fig. 1-2, which are schematic structural views of a power takeoff for a new energy vehicle according to the present invention. A power takeoff for a new energy vehicle includes a housing 10, an input device 20 provided in the housing 10, an output device 30 provided in the housing 10, and a driving device 40 provided in the housing 10. It is understood that the power takeoff for a new energy vehicle further includes other functional components and specific structures, such as a driving source, a mounting structure, etc., which are well known to those skilled in the art, and therefore, they will not be described in detail herein.

The housing 10 includes a housing 11, a mounting chamber 12 provided in the housing 11, and an input port 13 and an output port 14 provided at both sides of the housing 10, respectively.

The input device 20 includes a fixed shaft 21 penetrating the housing 10, an input gear 22 sleeved on the fixed shaft 21, and a transmission gear 23 sleeved on the fixed shaft 21 and fixedly connected to the input gear 22. The input device 20 is disposed at the input port 13, and the input gear 22 and the transmission gear 23 are integrated, that is, the input gear 22 and the transmission gear 23 are in a dual-gear structure. The outer diameter of the input gear 22 is larger than that of the transmission gear 23, and one side of the input gear 22 protrudes out of the input port 13, so that the input connection of the gearbox is facilitated. The outer wall of the input gear 22 is provided with an oblique outer gear part 221 and the oblique outer gear part 221, and a gear grinding machining process can be adopted to further improve the precision of the input gear 22, increase the meshing coincidence degree of the input gear 22 and a gearbox gear, improve the transmission efficiency, effectively reduce the noise generated in the transmission process and prolong the service life of the power takeoff gear. In addition, the fixed shaft 21 is further sleeved with an input bearing 24 located inside the input gear 22 and the transmission gear 23, so that the input gear 22, the transmission gear 23 and the fixed shaft 21 can rotate relatively. And both ends of the input bearing 24 are provided with limit sleeves, so that the input gear 22 and the transmission gear 23 cannot axially move and always keep a distance with the inner wall of the shell 11.

The output device 30 includes an output shaft 31 penetrating the housing 10, an output gear 32 sleeved on the output shaft 31, at least one limit guide groove 33 circumferentially disposed on the outer side of the output shaft 31 and axially disposed along the output shaft 31, and at least one limit tooth 34 disposed on the inner wall of the output gear 32 and correspondingly inserted into the limit guide groove 33. The output gear 32 is meshed with the transmission gear 23 through the driving device 40 to transmit power, and due to the matching of the limiting guide groove 33 and the limiting tooth 34, the output gear 32 and the output shaft 31 are limited in the circumferential direction and the output gear 32 can move axially along the output shaft 31, namely the output gear 32 drives the output shaft 31 to rotate. The output shaft 31 is sleeved with two output bearings 36 which are embedded on the outer shell 10 at intervals, and the output shaft 31 and the outer shell 10 can stably rotate relative to each other through the structural design of the output bearings 36. One end of the output shaft 31 is provided with an output matching part 35 penetrating out of the output port 14, and the output matching part 35 can effectively output power which is accelerated for many times.

The driving means 40 includes a driving cylinder 41, a fork 42 driven by the driving cylinder 41, and an annular sleeve 43 disposed at one side of the output gear 32 and coupled to the fork 42. The driving cylinder 41 drives the shifting fork 42 to drive the output gear 32, so that the output gear 32 moves towards one side of the transmission gear 23 along the limit guide groove 33 until the output gear 32 correspondingly engages with the transmission gear 23. The tooth part side walls of the transmission gear 23 and the output gear 32 on the opposite sides are provided with matching guide surfaces 321 with low middle convex edges and inverted sharp angles. New energy vehicle power is by motor drive, can accurately set up lower last shelves rotational speed when the power takeoff shifts to, but direct drive output gear 32 carries out the shift to, has simplified the structure of shifting to make the internally mounted structure compacter, and the simple and convenient reliability of processing is strong, more is applicable to the new energy vehicle through the tooth mode of shifting of sliding, through cooperation spigot surface 321 structure, effectively avoids the last shelves to beat the tooth phenomenon. It is conceivable that the driving cylinder 41 should be further provided with a push rod and a return spring, which are conventional in the art and therefore not described in detail.

The included angle of the adjacent external teeth of the output gear 32 far away from the output gear 32 is larger than the included angle of the adjacent external teeth of the output gear 32 close to the output gear 32. The structure is beneficial to the meshing trafficability between the output gear 32 and the transmission gear 23 when the output gear slides, and simultaneously, the meshing contact ratio of the output gear and the transmission gear is ensured. The outer diameter of the transmission gear 23 is smaller than the outer diameter of the output gear 32, that is, the transmission gear 23 performs a secondary speed increase when transmitting to the output gear 32.

The above description is only for the preferred embodiment of the present invention and should not be construed as limiting the scope of the present invention, and any modification, equivalent replacement or improvement within the spirit of the present invention is encompassed by the claims of the present invention.

Claims

1. The utility model provides a power takeoff for new forms of energy car which characterized in that: the power takeoff for the new energy vehicle comprises a shell, an input device arranged in the shell, an output device arranged in the shell and a driving device arranged in the shell, wherein the input device comprises a fixed shaft arranged in the shell in a penetrating way, an input gear arranged on the fixed shaft in a sleeved way and a transmission gear arranged on the fixed shaft and fixedly connected with the input gear, the output device comprises an output shaft arranged in the shell in a penetrating way, an output gear arranged on the output shaft in a sleeved way, at least one limiting guide groove arranged outside the output shaft in a circumferential direction and arranged along the axial direction of the output shaft and at least one limiting tooth arranged on the inner wall of the output gear and correspondingly inserted into the limiting guide groove, the driving device comprises a driving air cylinder, the shifting fork is driven by the driving cylinder, and the annular sleeve is arranged on one side of the output gear and connected with the shifting fork.

2. The power takeoff for a new energy vehicle as claimed in claim 1, wherein: the housing includes a housing, a mounting chamber disposed in the housing, and an input port and an output port disposed on either side of the housing.

3. The power takeoff for a new energy vehicle as claimed in claim 2, wherein: the input device is arranged at the input port, and the input gear and the transmission gear are of an integrated structure.

4. The power takeoff for a new energy vehicle as claimed in claim 1, wherein: the outer wall of the input gear is provided with an oblique outer gear part.

5. The power takeoff for a new energy vehicle as claimed in claim 2, wherein: the side walls of the transmission gear and the side walls of the output gear on the opposite sides are provided with matching guide surfaces with low middle convex edges and inverted sharp corners.

6. The power takeoff for a new energy vehicle as claimed in claim 3, wherein: and the included angle of the adjacent external teeth of the output gear far away from the output gear is larger than the included angle of the adjacent external teeth of the output gear close to the output gear.

7. The power takeoff for a new energy vehicle as claimed in claim 1, wherein: the outer diameter of the transmission gear is smaller than that of the output gear.

8. The power takeoff for a new energy vehicle as claimed in claim 1, wherein: one end of the output shaft is provided with an output matching part which penetrates out of the output port.

9. The power takeoff for a new energy vehicle as claimed in claim 1, wherein: the fixed shaft is also sleeved with an input bearing which is positioned at the inner side of the input gear and the transmission gear.

10. The power takeoff for a new energy vehicle as claimed in claim 1, wherein: the output shaft is sleeved with two output bearings which are embedded on the shell at intervals.