CN104500726A

CN104500726A - Spring positioning device for forward gear and reverse gear

Info

Publication number: CN104500726A
Application number: CN201410701421.7A
Authority: CN
Inventors: 苏德超
Original assignee: Chongqing Hwasdan Machinery Manufacturing Co Ltd
Current assignee: Chongqing Hwasdan Machinery Manufacturing Co Ltd
Priority date: 2014-11-28
Filing date: 2014-11-28
Publication date: 2015-04-08
Anticipated expiration: 2034-11-28
Also published as: CN104500726B

Abstract

The invention discloses a spring positioning device for a forward gear and a reverse gear. The spring positioning device comprises a shifting fork for shifting a shifting gear, a coil spring and a limit block, the shifting gear is positioned in a box and provided with an annular groove, the shifting fork comprises a shifting arm, a swing arm and a rotating portion connecting the shifting arm with the swing arm, a shifting fork block clamped in the annular groove is arranged at the tail end of the shifting arm, the rotating portion is connected to the sidewall of the box, a through hole for fixing one end of the coil spring is formed in the middle of the swing arm, the other end of the coil spring is inserted into the middle groove of the limit block, and an opening for the swing arm to swing is formed in one side, close to the swing arm, of the limit block. The spring positioning device for the forward gear and the reverse gear is simple in structure and convenient to operate, and safety of a mini-tiller is improved greatly.

Description

Just keeping off reverses gear uses spring-positioning device

Technical field

The present invention relates to field of agricultural machinery, be specifically related to a kind of farm machinery motor and use spring-positioning device with just keeping off reversing gear.

Background technique

China starts the exploitation of microtilling machine very early, but because many reasons does not form product, until the eighties in 20th century is not and the mid-90, along with the development of the soil output-based contract responsibility system, the raising of farmers' income and China's small diesel engine and petrol engine are tending towards maturation etc., the development of China's multifunctional small tiller starts starting.This period, mainly copy external product, but due to material, heat treatment process and external gap, so when just starting gear-box and tool parts Problems existing many, microtilling machine work is not long-time, gear-box is serious, the leakage of oil of heating or gear failure just, revolves the faults such as cutter does not bury, blade easy-rupturing in addition.

The mid-90 in 20th century, along with the adjustment of China's rural area pattern of farming, the fast development of industrializing facility agricultural, the increase of economic class crops planting area and the continuation of farmers' income improved, and my function microtilling machine has had a larger development to calendar year 2001.In about 5 years from 2002, the microtilling machine of China should be in the stage of ripeness.Type and quality are by basicly stable, and the quantity of manufacturer also will tend towards stability.

Microtilling machine with small diesel engine or petrol engine for power, the features such as have lightweight, volume is little, and structure is simple.Microtilling machine is widely used in the nonirrigated farmland, paddy field, orchard etc. on Plain, mountain area, hills.Mix corresponding machine also to have and can carry out drawing water, generate electricity, spray the operation such as medicine, spray, also can draw towed vehicle and carry out short-distance transport, microtilling machine freely can be exercised in field, user-friendly and deposit, eliminating the worry that large-scale farm machinery cannot enter field, mountain area, is that vast farmers Consumer substitutes the cultivated optimal selection of ox.

Disclosed on 04 10th, 2013 publication number CN202867797U patent document in, disclose a kind of gear shifting mechanism for mini-tiller, comprise main shift handle, be placed in main shift handle under gear level and the driving lever assembly that is socketed on gear level, driving lever component movement is driven after main shift handle rotates, thus realize gearshift, but the gearshift of this structure does not have positioning device, be easy to cause in traveling process, gear occur because jolting and changes and cause security incident.

Summary of the invention

The invention is intended to provide one just keeping off and reverse gear with spring-positioning device, to simplify transmission case structure.

Patent formula: the just gear in this programme reverses gear with spring-positioning device, comprise the selector fork stirring power shift gear, power shift gear is positioned at casing and is provided with annular groove, also comprise wind spring and limiting stopper, selector fork comprises the rotation section of moving arm, swing arm and connection, moving arm end is provided with the shift fork block be stuck in annular groove, rotation section is connected on wall box, the through hole of fixing wind spring one end is had in the middle part of swing arm, the wind spring the other end inserts in the groove in the middle part of limiting stopper, and limiting stopper is provided with the opening swung for swing arm near swing arm side;

Wind spring has clamping, to the right clamping two location statuss left, and when stirring swing arm to when being against opening left side wall, wind spring promotes swing arm left and pushes against opening left side wall left, and wind spring enters gripping orientation left; When stirring swing arm to when being against opening right side wall, wind spring promotes swing arm to the right and pushes against opening right side wall to the right, and wind spring enters gripping orientation to the right.

Compared with prior art, the invention has the advantages that: comprise the selector fork stirring power shift gear, power shift gear is positioned at casing and is provided with annular groove, also comprise wind spring and limiting stopper, selector fork comprises the rotation section of moving arm, swing arm and connection, and moving arm end is provided with the shift fork block be stuck in annular groove, when swing arm swings, moving arm also swings simultaneously, and the shift fork block of moving arm end is arranged in annular groove, thus makes power shift gear slip realize gear shifting action; Rotation section is connected on wall box, the through hole of fixing wind spring one end is had in the middle part of swing arm, the wind spring the other end inserts in the groove in the middle part of limiting stopper, limiting stopper is provided with the opening swung for swing arm near swing arm side, swing arm swings in the opening of limiting stopper, the left and right sidewall of opening represents the left and right limit position of swing of swing arm respectively, and groove location should between left and right limit position;

Wind spring has clamping, to the right clamping two location statuss left, wind spring bottom swings with swing arm in a groove, but swaying direction is contrary, wind spring top is then consistent with swing arm swaying direction, when stirring swing arm to when being against opening left side wall, wind spring top to produce tiltedly power left to swing arm, and wind spring promotes swing arm left and pushes against opening left side wall left, wind spring enters gripping orientation left, and now whole device is for just keeping off positioning states; When stirring swing arm to when being against opening right side wall, wind spring top to produce tiltedly power to the right to swing arm, and wind spring promotes swing arm to the right and pushes against opening right side wall to the right, and wind spring enters gripping orientation to the right, and now whole device is for the positioning states that reverses gear; Structure of the present invention is simple, easy to operate, and substantially increases the Security of microtilling machine.

Further, swing arm upper end is connected with pull bar, can realize long-range or control gearshift at steering position by pull bar.

Further, limiting stopper two ends are bolted on casing, facilitate installing/dismounting, are also convenient to adjustment limiting stopper height simultaneously.

Accompanying drawing explanation

Fig. 1 is the schematic diagram of the embodiment of the present invention;

Fig. 2 is that the embodiment of the present invention is in the schematic diagram just keeping off positioning states;

Fig. 3 is the schematic diagram that the embodiment of the present invention is in the positioning states that reverses gear;

Fig. 4 is the structural representation of wind spring in the embodiment of the present invention.

Embodiment

Below by embodiment, the present invention is further detailed explanation:

Reference character in Figure of description comprises: wind spring 1, limiting stopper 2, groove 21, swing arm 31, moving arm 32, power shift gear 4.

Embodiment is substantially as Figure 1-4: just keeping off reverses gear comprises with spring-positioning device the selector fork stirring power shift gear 4, power shift gear 4 is positioned at casing, power shift gear 4 circumference has annular groove, also comprise wind spring 1 and limiting stopper 2, selector fork comprises moving arm 32, swing arm 31 and rotation section both being connected, moving arm 32 end is provided with the shift fork block be stuck in annular groove, when swing arm 31 swings, moving arm 32 also swings simultaneously, and the shift fork block of moving arm 32 end is arranged in annular groove, thus power shift gear 4 slip is made to realize gear shifting action; Rotation section is connected on wall box, the through hole of fixing wind spring 1 one end is had in the middle part of swing arm 31, wind spring 1 the other end is curling is circular, wind spring 1 the other end half is inserted in the groove 21 in the middle part of limiting stopper 2, limiting stopper 2 is provided with the opening swung for swing arm 31 near swing arm 31 side, swing arm 31 swings in the opening of limiting stopper 2, and the left and right sidewall of opening represents the left and right limit position of swing of swing arm 31 respectively, and groove 21 position should between left and right limit position;

Wind spring 1 has clamping, to the right clamping two location statuss left, as shown in Figure 2, wind spring 1 bottom swings with swing arm 31 in groove 21, but swaying direction is contrary, and wind spring 1 top is then consistent with swing arm 31 swaying direction, when stirring swing arm 31 to when being against opening left side wall, wind spring 1 top to produce tiltedly power left to swing arm 31, wind spring 1 promotes swing arm 31 left and swings 5 degree left and push against opening left side wall, and wind spring 1 enters gripping orientation left, and now whole device is for just keeping off positioning states; As shown in Figure 3, when stirring swing arm 31 to when being against opening right side wall, wind spring 1 top to produce tiltedly power to the right to swing arm 31, and wind spring 1 promotes swing arm 31 to the right and swings 15 degree to the right and push against opening right side wall, wind spring 1 enters gripping orientation to the right, and now whole device is for the positioning states that reverses gear; Swing arm 31 upper end is connected with pull bar, and can realize long-range by pull bar or control gearshift at steering position, limiting stopper 2 two ends are bolted on casing, facilitate installing/dismounting, is also convenient to adjustment limiting stopper 2 height simultaneously.

Above-described is only embodiments of the invention, and in scheme, the general knowledge such as known concrete structure and characteristic does not do too much description at this.Should be understood that; for a person skilled in the art, under the prerequisite not departing from structure of the present invention, some distortion and improvement can also be made; these also should be considered as protection scope of the present invention, and these all can not affect effect of the invention process and practical applicability.The protection domain that this application claims should be as the criterion with the content of its claim, and the embodiment in specification etc. record the content that may be used for explaining claim.

Claims

1. just keeping off and reversing gear with spring-positioning device, comprise the selector fork stirring power shift gear, power shift gear is positioned at casing and is provided with annular groove, it is characterized in that, also comprise wind spring and limiting stopper, selector fork comprises the rotation section of moving arm, swing arm and connection, moving arm end is provided with the shift fork block be stuck in annular groove, rotation section is connected on wall box, the through hole of fixing wind spring one end is had in the middle part of swing arm, the wind spring the other end inserts in the groove in the middle part of limiting stopper, and limiting stopper is provided with the opening swung for swing arm near swing arm side;

2. according to claim 1 just gear is reversed gear with spring-positioning device, and it is characterized in that, swing arm upper end is connected with pull bar.

3. according to claim 2 just gear is reversed gear with spring-positioning device, and it is characterized in that, limiting stopper two ends are bolted on casing.