CN2603000Y

CN2603000Y - Forward and reverse gear driving device for motor tricycle

Info

Publication number: CN2603000Y
Application number: CN 02294095
Authority: CN
Inventors: 郎克钦
Original assignee: Renqiu Kewei Precision Machinery Factory
Current assignee: Renqiu Kewei Precision Machinery Factory
Priority date: 2002-12-26
Filing date: 2002-12-26
Publication date: 2004-02-11
Anticipated expiration: 2012-12-26

Abstract

The utility model uses two inner gears to form a rotor, at the axis end of the rotor is fixed with a chain wheel to be an output chain wheel(11), a shift gear(7) is concentric with the rotor, and can make axis direction moving(shift) at the spline shaft(14) or turn with the spline shaft. The position which the shift gear (7) move along axis direction is controlled by shifting fork, one state is that all the tooth of the shift gear (7) are embed into the small inner gear (8), then here is a toward moving shift; the other state is that the shift gear (7) is embedded with the middle gear (6), then the reverse shift comes up.

Description

The positive reverse gear driving device of a kind of motor-tricycle

Technical field the utility model relates to a kind of driving device of motor-tricycle, a kind of shifting apparatus that motor-tricycle is done just drive a vehicle and move backward.Can replace original driving device, increase car-backing function and the speed of reverse gear is reduced.

The background technology motor-tricycle is equipped with a cover two gear stages usually between engine output shaft and back axle, the function that this structure has only positive car to move ahead, and for realizing can car-backing function, existing at present positive reverse gear driving device with four spur gears compositions.Because the reduction of driving efficiency increases fuel consumption rate.

The summary of the invention the purpose of this utility model is that a kind of improved positive reverse gear driving device will be provided, and it can finish ahead and astern by actv., and back-up speed is slow, and noise reduces, the driving efficiency height.

The purpose of this utility model is to realize like this, wheel for inputting with driving engine output wheel and this device is chain gear, output chain gear of this device and back axle are chain gear, the input sprocket of device and the center of output chain gear are on same line of centers, when the output wheel of driving engine rotates, the device input sprocket rotates, and output chain gear is with same rotational speed (this moment travel for positive car driving); When the shift position of device was reverse gear, still for just changeing, the output chain gear of device was for reversing (drive for reverse travel this moment) for the input sprocket of device.

This device of description of drawings comprises a casing (10) and a case lid (1), uses bolt, interior dress big internal gear (2), small ring gear (8), small ring gear is gone into the back welding in a side pressure of big internal gear, forms a kind of pair of internal tooth constructional delails, and this part supports with a bearing (9).Intermediate gear (6) is supported by little axle (5).The centre is a castellated shaft (14), and this a end is that bearing (4) supports, and the other end is support with the hole of two internal tooth parts.Shift gear (7) can be gone up at castellated shaft (14) and slide, and its slip is driven by shift fork (3), on the axle of big internal gear output chain gear (11) is installed and is fixed and locked by tight loop (12) and a key.

The specific embodiment drives input sprocket (13) when turn of engine just change, because input sprocket (13) and castellated shaft (14) be spline fitted and axially be fixed, castellated shaft is also just changeing and driving shift gear (7) rotation.Because shift gear (7) is that all teeth all embed in small ring gear (6) internal tooth when advancing gear, then small ring gear (6) and big internal gear (2) rotate simultaneously, and output chain gear (11) is a forward rotation at this moment.When the shift position of device was suspended to reverse gear position, shift fork (3) was outwards pulled out, and shift gear (7) and intermediate gear (6) engagement are satisfied in the location that shift fork (3) is pulled out.Input sprocket when turn of engine (13) is done forward rotation, and shift gear (8) forward rotation simultaneously also rotates big internal gear (2) by the rotation of intermediate gear (6) in the opposite direction.Output chain gear (11) is made backward rotation simultaneously.The velocity of rotation of output chain gear (11) drops to Z1/Z2 * 100% of input sprocket (13) rotating speed.(the Z1 shift gear number of teeth; The Z2 big internal gear number of teeth)

Claims

1, adorns a cover shift transmission device in the positive reverse gear driving device of this motor-tricycle, it is characterized in that inner gear by two different numbers of teeth, be that small ring gear (8) and big internal gear (2), a shift gear (7) and an intermediate gear (6) combine, shift gear (7) is installed on the castellated shaft (14), and shift fork (3) control shift gear (7) meshes with intermediate gear (6) or small ring gear (8) respectively or separates.

2, device according to claim 1 is characterized in that two inner geares are that small ring gear (8) and big internal gear (2) are formed a rotor and fixed a sprocket wheel at the axle head of this rotor.

3, according to claim 1,2 described devices, it is characterized in that shift gear (7) is moving axially when shifting one's position, a kind of state is that all teeth of shift gear (7) all embed in the small ring gear (8); Another kind of state is that shift gear (7) is meshed with intermediate gear (6), and intermediate gear (6) is meshed with big internal gear (2).

4, according to claim 1,2,3 described devices, the number of teeth that it is characterized in that small ring gear (8) is 14, the number of teeth of big internal gear (2) is 45, the number of teeth of intermediate gear (6) is 14, the number of teeth of shift gear (7) is 14.