CN2793448Y

CN2793448Y - Reverse-gear operating mechanism

Info

Publication number: CN2793448Y
Application number: CN 200520018885
Authority: CN
Inventors: 郑小兵
Original assignee: Chongqing Loncin Industry Group Co Ltd
Current assignee: Loncin General Dynamics Co Ltd
Priority date: 2005-05-25
Filing date: 2005-05-25
Publication date: 2006-07-05
Anticipated expiration: 2015-05-25

Abstract

The utility model discloses a reverse-gear operating mechanism which comprises a shifting fork, a shifting fork shaft, a torsional spring and a gear shifting shaft, wherein the shifting fork, the shifting fork shaft, the torsional spring and the gear shifting shaft are installed in coaxially type, the shifting fork and the shifting fork shaft are movably connected through a cam structure, and the shifting fork shaft is elastically connected with the gear shifting shaft through the torsional spring and a gear ring. The utility model has the advantages of few parts, little space occupation, low cost, etc.

Description

A kind of reverse gear operating device

Technical field

The utility model relates to a kind of reverse gear operating device.

Background technique

General reverse gear operating device moves clutch cover by shift fork makes itself and

forward gears tooth

2 or 4 engagements of reverse gear tooth realize the output shaft forward and backward, there are reciprocating and rotating type and reciprocal direct-acting type in the mechanism that the promotion shift fork moves, and the structural type of reciprocating and rotating type shift fork mobile mechanism as shown in Figure 1, 2.It comprises shift fork 8, speed-changing drum 7, driving gear pair 6, shift axle 5, speed-changing drum 7 is provided with cam path, shift fork is provided with claw 8-1, mounting hole 8-2 and pusher dog 8-3, shift fork is connected with clutch cover 3 by claw, simultaneously, is installed on the casing by declutch shift shaft 9, its pusher dog is inserted in the cam path 7-1 of speed-changing drum 7, and shift axle 5 is connected with speed-changing drum 7 by driving gear pair 6.Its working procedure is, when rotating the shift axle, driving gear pair 6 makes and drives the speed-changing drum rotation, and the speed-changing drum cam path makes pusher dog 8-3 move up and down again, shift fork 8-1 moves clutch cover 3 and makes itself and empty

forward gears tooth

2 or 4 engagements of reverse gear tooth that are enclosed within on the input shaft 1, realization output shaft forward and backward.The defective of this reverse gear operating device is being that pusher dog axle, speed-changing drum, shift axle three detached parallel are arranged, and install on the casing respectively, zero, number of components (as driving gear pair 6) have not only been increased, and, increased the quantity that the casing mounting hole site is processed, so the manufacture cost height; Simultaneously, mechanism's occupation space is also bigger, and multiaxis is installed also relatively difficulty.

The model utility content

The purpose of this utility model is to overcome the defective of prior art, and a kind of reverse gear operating device of compact type is provided, declutch shift shaft and shift axle and speed-changing drum are arranged on the same axis, thereby, reduce number of spare parts, dwindle and take up room, reduce manufacture cost.

For addressing the above problem, the utility model adopts following technological scheme:

A kind of reverse gear operating device comprises clutch cover, shift fork, declutch shift shaft, torsion spring, the shift axle, described shift fork is provided with claw and mounting hole, shift fork is connected by claw with clutch cover, declutch shift shaft and shift axle are arranged on the same axis, shift fork is sleeved on the declutch shift shaft by mounting hole, and flexibly connects by cam structure and declutch shift shaft, and the shift axle is connected by torsion spring elasticity with declutch shift shaft;

Described shift fork is installed hole wall and is provided with the end cam groove, and declutch shift shaft is provided with radially pusher dog, and described pusher dog is inserted into shift fork and installs in the cam path of hole wall;

Described declutch shift shaft is provided with the small end diameter of axle and two torsion spring pin bores, shift axle one end is provided with step hole, in the small end diameter of axle suit shift pillow block rank aperture of declutch shift shaft, torsion spring set is contained in the space that the small end diameter of axle of declutch shift shaft and shift pillow block rank macropore form, two torsion spring pins insert respectively on the declutch shift shaft in corresponding two torsion spring pin bores, and shift pillow block rank macropore portion is processed with the breach that is used to install the torsion spring pin;

Be provided with packing ring between torsion spring and the shift axle;

Pusher dog is fixed on the declutch shift shaft by being threaded.

The utility model is traditional declutch shift shaft, torsion spring, the coaxial installation of shift axle, so can reduce number of spare parts, dwindle and take up room, reduce manufacture cost.

Description of drawings

Fig. 1 is existing reverse gear plan view;

Fig. 2 is existing reverse gear plan view;

Fig. 3 is the utility model plan view;

Fig. 4 is that the utility model plan view C is to figure;

Fig. 5 is that the C of Fig. 3 is to figure;

Fig. 6 is the B-B direction view of Fig. 5;

Fig. 7 is the A-A direction view of Fig. 3;

Fig. 8 is that the C-C of Fig. 5 is to view;

Fig. 9 is that F is to view.

Among the figure: 1, input shaft; 2, forward gears tooth; 3, reverse gear clutch cover; 4, reverse gear tooth; 5, shift axle; 6, driving gear pair; 7, speed-changing drum; 8, fork; 9, fork axle; 10, torsion spring; 11, ring washer; 12, pusher dog; 13, torsion spring pin bores; 14, torsion spring pin; 15, cam path.

Embodiment

A kind of reverse gear operating device comprises clutch cover 3, shift fork 8, declutch shift shaft 9, torsion spring 10, shift axle 5, described shift fork is provided with claw 8-1 and mounting hole 8-2, shift fork is connected by claw with clutch cover, declutch shift shaft 9 and shift axle 5 are arranged on the same axis, shift fork 8 is sleeved on the declutch shift shaft 9 by mounting hole, and flexibly connects by cam structure and declutch shift shaft 9, and shift axle 5 is connected by torsion spring 10 elasticity with declutch shift shaft 9;

Described shift fork is installed hole wall and is provided with end cam groove 15, and declutch shift shaft 9 is provided with radially pusher dog 12, and described pusher dog 12 is inserted into shift fork and installs in the cam path 15 of hole wall;

Described declutch shift shaft is provided with the small end diameter of axle and two torsion spring pin bores 13, shift axle 5 one ends are provided with step hole, in the small end diameter of axle suit shift pillow block rank aperture of declutch shift shaft, torsion spring set is contained in the space that the small end diameter of axle of declutch shift shaft and shift pillow block rank macropore form, two torsion spring pins 14 insert respectively on the declutch shift shaft 9 in corresponding two torsion spring pin bores 13, and shift pillow block rank macropore portion is processed with the breach that is used to install torsion spring pin 14;

Be provided with packing ring 11 between torsion spring 10 and the shift axle 5;

Pusher dog 12 is fixed on the declutch shift shaft 9 by being threaded.

Claims

1, a kind of reverse gear operating device comprises clutch cover, shift fork, declutch shift shaft, torsion spring, the shift axle, described shift fork is provided with claw and mounting hole, shift fork is connected by claw with clutch cover, it is characterized in that: declutch shift shaft and shift axle are arranged on the same axis, shift fork is sleeved on the declutch shift shaft by mounting hole, and flexibly connects by cam structure and declutch shift shaft, and the shift axle is connected by torsion spring elasticity with declutch shift shaft.

2, a kind of reverse gear operating device as claimed in claim 1 is characterized in that: described shift fork is installed hole wall and is provided with the end cam groove, and declutch shift shaft is provided with radially pusher dog, and described pusher dog is inserted into shift fork and installs in the cam path of hole wall.

3, a kind of reverse gear operating device as claimed in claim 1, it is characterized in that: described declutch shift shaft is provided with the small end diameter of axle and two torsion spring pin bores, shift axle one end is provided with step hole, in the small end diameter of axle suit shift pillow block rank aperture of declutch shift shaft, torsion spring set is contained in the space that the small end diameter of axle of declutch shift shaft and shift pillow block rank macropore form, two torsion spring pins insert respectively on the declutch shift shaft in corresponding two torsion spring pin bores, and shift pillow block rank macropore portion is processed with the breach that is used to install the torsion spring pin.

4, a kind of reverse gear operating device as claimed in claim 3 is characterized in that: be provided with packing ring between torsion spring and the shift axle.

5, a kind of reverse gear operating device as claimed in claim 2, it is characterized in that: pusher dog is fixed on the declutch shift shaft by being threaded.