CN202484217U

CN202484217U - Gear change device

Info

Publication number: CN202484217U
Application number: CN2012201185834U
Authority: CN
Inventors: 占贤富; 刘锐
Original assignee: HUBEI LONGQUAN MACHINERY CO Ltd
Current assignee: HUBEI LONGQUAN MACHINERY CO Ltd
Priority date: 2012-03-27
Filing date: 2012-03-27
Publication date: 2012-10-10
Anticipated expiration: 2022-03-27

Abstract

The utility model discloses a gear change device. A driving gear is slidingly arranged in a driven gear by a spline structure; the driving gear and the driven gear are connected with a fork device; the driving gear is meshed and matched with a coaxial large gear of a middle gear; or the driven gear is meshed and matched with a coaxial small gear of the middle gear. By using a switching mode of differential motion, the gear change device provided by the utility model can be used for conveniently adjust speed and shift gears, provides less gears with lower cost, and is suitable for the working condition of small agricultural machinery.

Description

Speed change gear

Technical field

The utility model relates to a kind of speed change gear, particularly a kind of miniature farm machinery that is applicable to, the for example speed change gear of setting parameter.

Background technique

The common structure of existing speed change gear is comparatively complicated, and gear is also more, and cost is higher, is inappropriate for the use of miniature farm machinery.

Summary of the invention

The utility model technical problem to be solved provides a kind of speed change gear, with lower cost less relatively gear is provided, and it is comparatively convenient to switch gear.

For solving the problems of the technologies described above, the technological scheme that the utility model adopted is: a kind of speed change gear, and driving gear is slidingly mounted in the driven gear through spline structure, and driving gear is connected with shifting fork device with driven gear;

The coaxial gearwheel engagement fit of driving gear and intermediate gear, perhaps the coaxial pinion engagement fit of driven gear and intermediate gear.

In the described shifting fork device, the driving gear shift fork is connected with the driving gear fork slot of driving gear, and the driven gear shift fork is connected with the driven gear fork slot of driven gear.

Described driving gear shift fork and driven gear shift fork are slidably mounted on the both sides of shift fork dish, and the rear end and the depression bar beam of driving gear shift fork and driven gear shift fork are slidingly connected, and shift fork dish middle part is provided with strut, and strut and depression bar beam are hinged.

The rear end of driving gear shift fork and driven gear shift fork is provided with sliding pin, and driving gear shift fork and driven gear shift fork are installed in the sliding-groove of depression bar beam through sliding pin versatilely.

A kind of speed change gear that the utility model provides, through adopting differential switching mode, governing speed is convenient, and gearshift is convenient, with lower cost less gear is provided, and is applicable to the operating mode of miniature farm machinery.

Description of drawings

Below in conjunction with accompanying drawing and embodiment the utility model is described further.

Fig. 1 is the plan view of the variable part of the utility model.

Fig. 2 is the A-A sectional view of Fig. 1.

Fig. 3 is the stereogram of variable part in the utility model.

Fig. 4 is overall structure schematic representation in the utility model (being lower-speed state this moment).

Fig. 5 is overall structure schematic representation in the utility model (being fast state this moment).

Among the figure: driving gear 1, driven gear 2, driving gear fork slot 3, driven gear fork slot 4, intermediate gear 5, output gear 6, driving gear shift fork 7, driven gear shift fork 8, shift fork dish 9, depression bar beam 10, handle 11, strut 12.

Embodiment

In Fig. 1-Fig. 3, a kind of speed change gear, driving gear 1 is slidingly mounted in the driven gear 2 through spline structure, and driving gear 1 is connected with shifting fork device with driven gear 2; Common inwall at driving gear 1 also is provided with keyway and is used for being connected with transmission shaft, the spline structure of the inwall of driving gear 1 employing in this example.

The coaxial gearwheel engagement fit of driving gear 1 and intermediate gear 5 as shown in Figure 4, is in lower-speed state this moment, and perhaps the coaxial pinion engagement fit of driven gear 2 and intermediate gear 5 as shown in Figure 5, is in fast state this moment.Like Fig. 5, shown in Figure 6, the state of this high speed and low speed is through shift fork, stirs driving gear 1 and driven gear 2 and slides over each other and realize that when one of them gear was in engagement, another gear then was in the neutral state.Intermediate gear 5 and output gear 6 engagement fit.

In the described shifting fork device, driving gear shift fork 7 is connected with the driving gear fork slot 3 of driving gear 1, and driven gear shift fork 8 is connected with the driven gear fork slot 4 of driven gear 2.

Described driving gear shift fork 7 and driven gear shift fork 8 are slidably mounted on the both sides of shift fork dish 9; The rear end and the depression bar beam 10 of driving gear shift fork 7 and driven gear shift fork 8 are slidingly connected; Shift fork dish 9 middle parts are provided with strut 12, and strut 12 is hinged with depression bar beam 10.Structure thus, whole shifting fork device constitutes a difference structure, is fulcrum with strut 12; Stir depression bar beam 10 through handle 11; Driving gear 1 is in differential sliding mode with driven gear 2, and when promptly stirring, the moving direction of driving gear 1 and driven gear 2 is opposite; Be the depression bar beam 10 less distance of only need moving, the bigger distance of then having moved between driving gear 1 and the driven gear 2.

The rear end of driving gear shift fork 7 and driven gear shift fork 8 is provided with sliding pin, and driving gear shift fork 7 is installed in through sliding pin in the sliding-groove of depression bar beam 10 with driven gear shift fork 8 versatilely, and is concrete shown in Fig. 4, Fig. 5.Structure guarantees that driving gear shift fork 7 and driven gear shift fork 8 slide reliably in shift fork dish 9 thus.This end of sentencing away from driving gear 1 and driven gear 2 is the rear end.

Claims

1. speed change gear, it is characterized in that: driving gear (1) is slidingly mounted in the driven gear (2) through spline structure, and driving gear (1) is connected with shifting fork device with driven gear (2);

The coaxial gearwheel engagement fit of driving gear (1) and intermediate gear (5), perhaps the coaxial pinion engagement fit of driven gear (2) and intermediate gear (5).

2. a kind of speed change gear according to claim 1; It is characterized in that: in the described shifting fork device; Driving gear shift fork (7) is connected with the driving gear fork slot (3) of driving gear (1), and driven gear shift fork (8) is connected with the driven gear fork slot (4) of driven gear (2).

3. a kind of speed change gear according to claim 2; It is characterized in that: described driving gear shift fork (7) and driven gear shift fork (8) are slidably mounted on the both sides of shift fork dish (9); The rear end of driving gear shift fork (7) and driven gear shift fork (8) and depression bar beam (10) are slidingly connected; Shift fork dish (9) middle part is provided with strut (12), and strut (12) is hinged with depression bar beam (10).

4. a kind of speed change gear according to claim 3; It is characterized in that: the rear end of driving gear shift fork (7) and driven gear shift fork (8) is provided with sliding pin, and driving gear shift fork (7) and driven gear shift fork (8) are installed in the sliding-groove of depression bar beam (10) through sliding pin versatilely.