CN2826085Y

CN2826085Y - Transmission case

Info

Publication number: CN2826085Y
Application number: CN 200520051969
Authority: CN
Inventors: 周庄明
Original assignee: Individual
Current assignee: Individual
Priority date: 2005-09-21
Filing date: 2005-09-21
Publication date: 2006-10-11
Anticipated expiration: 2015-09-21

Abstract

The utility model relates to a speed change box for a paddy field boat, which comprises an input shaft and an output shaft, and the input shaft and the output shaft are parallel arranged. A belt pulley 10 is arranged on a shaft end of the input shaft 8, and a clutch 11 is arranged between the belt pulley 10 and a speed change box body 12. The output shaft is composed of an output left section 26 and an output right section 23, and the output left section 26 and the output right section 23 are fixed on both sides of the box body through a bearing seat, wherein a cylindrical head on one end of the output right section 23 is sheathed in a central hole of a jogged end face of a tooth head of the output right section 23, and the tooth head of a shaft end face is engaged with clutch tooth 28 which are arranged at a proper position of the output left section 26. A spring 27 is arranged between a shaft shoulder of the output left section 26 in the speed change box body and the clutch teeth 28, and the excircle of the clutch teeth 28 is provided with a pulling fork 2 which is connected into a whole with a pulling fork shaft 1. One end of the pulling fork shaft 1 extends outside the back upper part of the speed change box, and an embedded differential device of the speed change box for a paddy field boat is arranged in the speed change box. The pulling fork shaft is arranged on the back upper part of the speed change box, thus the pulling fork shaft can not be wound by rice straws and engagement and disengagement can be easily carried out. The utility model has the advantages of practicality, easy turning and labor intensity reduction.

Description

A kind of gearbox

Technical field

The utility model relates to a kind of gearbox, exactly is a kind of gearbox with embedded differential mechanism that is used for wet-field roller boat.

Background technique

Wet-field roller boat is a kind of water field ploughing instrument, because turning is difficult when having the wet-field roller boat operation now, operator's labor intensity is big, some wet-field roller boats install an embedded differential mechanism additional on its every limit, gearbox both sides for this reason, on the bearing support of differential fork pull handle design in gearbox and driving wheel slit, utilize the asynchronous of both sides driving wheel speed, realize the turning of wet-field roller boat.But the wet-field roller boat of this structure is when ploughing whole rice field, and often driving wheel rotating band grass twines differential and separates pull handle, causes differential mechanism can not separate or be difficult to combination, can not realize the differential purpose; And both sides design differential mechanism, mechanism's complexity increases manufacture cost, and in fact, wet-field roller boat is when paddy-field-working, as long as a direction changeed just much of that in the past, therefore need not both sides design differential mechanism.The 2nd, do not design engaging and disengaging gear between power and the gearbox, can not stir the speed change gear throw-over at the volley.

The model utility content

The technical problems to be solved in the utility model is: the utility model is intended to provide a kind of simple in structure, gearbox with embedded differential mechanism of making things convenient for wet-field roller boat to turn for wet-field roller boat.

In order to solve the problems of the technologies described above, the technological scheme that the utility model is taked is: described gearbox includes the input shaft and the output shaft that are arranged in parallel.The axle head that input shaft stretches out gearbox casing is equipped with belt pulley, is equipped with clutch between belt pulley and gearbox casing; Output shaft is made up of output left side joint and the right joint of output, and the right joint of output left side joint and output is fixed on the casing both sides by bearing support, and the axial end of the right joint of output in gearbox casing has the tooth head, and the outer end of casing is equipped with driving wheel; The spindle nose of output left side joint is smooth socket cap, the centre is a splined shaft, one end socket cap dress driving wheel, the other end socket cap is sleeved in the center hole of the right tooth head fitting end face that saves of output, the radially suitable position of output left side joint is equipped with the clutch tooth with the engagement of right joint tooth head, output left side joint in gearbox casing the shaft shoulder and the clutch tooth between spring is housed, clutch tooth cylindrical is equipped with fork, fork and fork axle combine as a whole, and one on fork axle stretches out the gearbox back upper place.

Compared with prior art, the utility model has the advantages that: embedded differential mechanism is contained in the gearbox, and the fork axle is installed in the back upper place of gearbox, can not twined by straw, and clutch smoothly, thus reach the differential purpose; Gearbox is joined and is arranged clutch on the input shaft, can realize stirring the speed change gear throw-over smoothly during work.Because wet-field roller boat only needs just can reach cultivated whole purpose fully to turning on one side when the operation of rice field, so the light and handy practicality of the wet-field roller boat of monolateral differential, turning are easily, greatly reduce labor intensity, and avoided causing machine to hit machine that ridge takes place greatly and spoken sarcastically and hinder accident because of being difficult to turn.

Description of drawings

Fig. 1 is the utility model plan view;

Fig. 2 is that the A-A of the utility model plan view is to sectional drawing;

Fig. 3 is that the middle K-K of the utility model plan view is to sectional drawing.

Embodiment

As Fig. 1, Fig. 2, shown in Figure 3, gearbox mainly is made up of with fork axle 1 input shaft 8 that is arranged in parallel, the axle 4 of passing a bridge, the axle 9 of passing a bridge, the axle 18 of passing a bridge, pass a bridge axle 21 and output shaft, belt pulley 10, three-pawl type wearing piece clutch 11, gearbox casing 12, speed change tooth 7, speed change tooth 13, duplicate gear 3, duplicate gear 15, gear 16, gear 17, gear 19, gear 20, output shaft gear 22, fork 2.The axle head that input shaft 8 stretches out gearbox casing 12 is equipped with three-pawl type wearing piece clutch 11 and belt pulley 10, by the rubbing contact degree of leverage solenoidoperated cluthes and belt pulley; The power that three-pawl type wearing piece clutch 11 transmits belt pulley 10 imports input shaft 8 into.Movably speed change tooth 7 and speed change tooth 13 are housed on the splined shaft of input shaft 8 in gearbox casing 12, the gap bridge axle 4 that duplicate gear 3 is housed places input shaft 8 and the top of the axle 9 of passing a bridge, the axle 9 contiguous input shafts 8 of passing a bridge are arranged, stir gear graduation by the fork on fork axle 5 or the fork axle 6.Fork on the fork axle 6 is stirred speed change tooth 13 by clutch 11 1 sides, and the fork 14 on the fork axle 5 is a neutral gear when stirring speed change tooth 7 and being in the bearing of input shaft seat; Fork on the fork axle 6 is stirred speed change tooth 13, make its with the axle 9 of passing a bridge on duplicate gear 15 on the gearwheel engagement, reach at a slow speed and advance; Stir speed change tooth 13, make itself and duplicate gear 3 engagements of axle on 4, the duplicate gear 15 that drives on the axle 9 of passing a bridge through the small gear of duplicate gear 3 reaches the reversing effect again; Fork 14 on the fork axle 5 is stirred the pinion of the duplicate gear 15 on speed change tooth 7 and the gap bridge axle 9, reaches fast and advances.Gear 16 on the gap bridge axle 18 is by driving in-line gears 17 with duplicate gear 15 engagements, gear 17 by with the axle 21 of passing a bridge on gear 19 engagements, power is passed to gear 20 on the axle 21 of passing a bridge, gear 20 is the gear 22 on the transmission output shaft again, output shaft is made up of output left side joint 26 and the right joint 23 of output, the right joint of output left side joint 26 and output 23 is fixed on casing 12 both sides by bearing support, and the axial end of the right joint 23 of output gearbox casing 12 in has the tooth head, and the end outside the casing is equipped with driving wheel; The spindle nose of output left side joint 26 is smooth socket cap, the centre is a spline, one end socket cap dress driving wheel, the other end socket cap is sleeved in the center hole of the tooth head fitting end face of exporting right joint 23, the radially suitable position of output left side joint 26 is equipped with the clutch tooth 28 with the engagement of right joint tooth head, output left side joint 26 in gearbox casing the shaft shoulder and clutch tooth 28 between spring 27 is housed, clutch tooth 28 cylindricals are equipped with fork 2, fork 2 combines as a whole with fork axle 1, and 1 one on fork axle stretches out the gearbox back upper place.When turning, as long as the operator rotates fork axle 1, clutch tooth 28 is with regard to the detachment dynamic transmission, and the driving wheel on the left side promptly becomes driven rotation at random.The right driving wheel becomes initiatively, promotes machine and easily turns.

Claims

1, a kind of gearbox includes the input shaft and the output shaft that are arranged in parallel, it is characterized in that: the axle head that input shaft (8) stretches out gearbox casing (12) is equipped with belt pulley (10), is equipped with clutch (11) between belt pulley (10) and gearbox casing (12); Output shaft is made up of output left side joint (26) and the right joint of output (23), output left side joint (26) and the right joint of output (23) are fixed on the casing both sides by bearing support, the right joint of output (23) axial end in gearbox casing (12) has the tooth head, and the outer end of casing is equipped with driving wheel; The spindle nose of output left side joint (26) is smooth socket cap, the centre is a splined shaft, one end socket cap dress driving wheel, the other end socket cap is sleeved in the center hole of the tooth head fitting end face of exporting right joint (23), the radially suitable position of output left side joint (26) is equipped with the clutch tooth (28) with the engagement of right joint tooth head, output left side joint (26) in gearbox casing the shaft shoulder and clutch tooth (28) between spring (27) is housed, clutch tooth (28) cylindrical is equipped with fork (2), fork (2) combines as a whole with fork axle (1), and (1) one on fork axle stretches out the gearbox back upper place.

2, a kind of gearbox according to claim 1 is characterized in that: described clutch is a three-pawl type wearing piece clutch (11).

3, a kind of gearbox according to claim 1 and 2, it is characterized in that: movably speed change tooth (7) and speed change tooth (13) are housed on the splined shaft of input shaft (8) in gearbox casing (12), the gap bridge axle (4) that duplicate gear (3) is housed places input shaft (8) and the top of the axle (9) of passing a bridge, the contiguous input shaft of axle (9) (8) of passing a bridge is arranged, stirs speed change tooth (7) and speed change tooth (13) speed change by the fork on fork axle (5) or the fork axle (6).