CN205226300U - Transmission for paddy field working machine - Google Patents

Transmission for paddy field working machine Download PDF

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Publication number
CN205226300U
CN205226300U CN201520978833.5U CN201520978833U CN205226300U CN 205226300 U CN205226300 U CN 205226300U CN 201520978833 U CN201520978833 U CN 201520978833U CN 205226300 U CN205226300 U CN 205226300U
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China
Prior art keywords
sealing
input shaft
axle
power
gearbox
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CN201520978833.5U
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Chinese (zh)
Inventor
大西哲平
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Kubota Corp
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Kubota Corp
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Abstract

The utility model relates to a transmission for paddy field working machine can suppress earth, dust and invade the supporting position that carries out the transmission shaft that input/output used to the drive case that applies fertilizer. The drive case (80) that fertilizies has tube -shape input shaft (81) and bearing bushing portion (82), tube -shape input shaft (81) outer inlays and takes out axle (74) with power going, and take out with power that axle (74) is integrative to rotate with traveling, bearing bushing portion (82) pivot suspension tube -shape input shafts (81), travel and take out axle (74) and tube -shape input shaft (81) with power and can transmit power via spline fitting portion (75), going between interior week of taking out peripheral part and tube -shape input shaft (81) of axle (74) with power, and both sides around spline fitting portion (75), be equipped with sealing member (76).

Description

Working in paddy field transmission device
Technical field
The utility model relates to a kind of working in paddy field transmission device, this working in paddy field transmission device has the fertilising drive cassette with gearbox split, described gearbox is built-in with the speed change gear of running and driving system, described fertilising drive cassette is built-in with the driving mechanism to fertilizer apparatus transferring power, and the power difference that the traveling power extended from gearbox takes out axle drives to described fertilising drive cassette.
Background technique
As mentioned above, as having the working in paddy field making the power difference of traveling power taking-up axle drive to the structure of fertilising drive cassette, following existing working in paddy field is had.Specifically, insert power extraction portion from the gearbox transmission shaft that axle box extends backward, through this power extraction portion by transmission of power to the unloading part (with reference to patent documentation 1) of fertilizer apparatus.
(prior art document)
(patent documentation)
Patent documentation 1: Japanese invention patent announcement " speciallys permit No. 4059799 " (with reference to paragraph " 0029 ", Fig. 1, Fig. 3 and Fig. 5)
Model utility content
(problem to be solved in the utility model)
With regard to the working in paddy field described in above-mentioned patent documentation 1, there is the power extraction portion as the drive cassette that applies fertilizer with gearbox split.Therefore, compared with situation about being also assembled in gearbox by the driving mechanism that applies fertilizer, the maximization of gearbox itself can be avoided.
But, in this configuration, due to fertilising drive cassette be configured in significantly away from gearbox body rear side and be configured near rear car axle box, therefore, the supporting portion that the transmission shaft of input output carries out to fertilising drive cassette may invade the earth of upspringing or around dust, still have room for improvement in this.
The utility model can suppress the supporting portion carrying out the transmission shaft of input output to fertilising drive cassette to invade earth or dust.
(scheme of dealing with problems)
The feature of working in paddy field transmission device of the present utility model is to have: gearbox, is built-in with the gear of running and driving system; And fertilising drive cassette, form with described gearbox split, be built-in with the driving mechanism to fertilizer apparatus transferring power, described fertilising drive cassette has: tubular input shaft, axle is taken out fitted in traveling power, and taking out axle unitary rotation with described traveling power, described traveling power takes out axle and extends from described gearbox; And bearing sleeve portion, tubular input shaft described in pivot suspension, described traveling power takes out axle and described tubular input shaft can pass through spline embedding part transferring power, between the peripheral part that described spline embedding part is formed at described traveling power taking-up axle and the inner peripheral portion of described tubular input shaft, and, between the peripheral part and the inner peripheral portion of described tubular input shaft of described traveling power taking-up axle, and in the both sides, front and back of described spline embedding part of axial direction of taking out axle along described traveling power, be equipped with Sealing.
According to the utility model, compared with the situation that the driving mechanism that applies fertilizer is assembled in gearbox, the maximization of gearbox itself can be avoided, and, can by being formed at the spline embedding part transferring power between the peripheral part of traveling power taking-up axle and the inner peripheral portion of described tubular input shaft, thereby, it is possible to easily carry out assembling Sum decomposition to fertilising drive cassette.
Take out between the peripheral part of axle and the inner peripheral portion of tubular input shaft at traveling power, and in the both sides, front and back of spline embedding part being positioned at traveling power and taking out the axial direction of axle, be equipped with Sealing, therefore, it is possible to suppress earth or dust to invade the Present site of spline embedding part.
In the present embodiment, as preferably, described Sealing has the first Sealing and the second Sealing in the mode clipping described spline embedding part, described first Sealing is equipped in the side away from described gearbox, described second Sealing is equipped in the side near described gearbox, further, described first Sealing is higher than the sealing of described second Sealing.
According to this structure, by making the first Sealing be equipped in away from the side of gearbox, there is higher sealing, thus generally speaking earth or dust can be improved to disperse the sealing at more position, can more easily suppress earth or dust to invade the Present site of spline embedding part.
In the utility model, as preferably, described in the contact area rate of described first Sealing, the second Sealing is large.According to this structure, can improve away from gearbox and the sealing at the larger position of the possibility invaded by earth or dust.
Further, as preferably, described first Sealing is made up of the ring-shaped member of band plate-like.Thereby, it is possible to the sealing simply constructing raising first Sealing.
And then as preferably, described second Sealing is made up of O type circle.Thereby, it is possible to utilize commercially available product as the second Sealing, be easy to realize cost degradation.
In the utility model, as preferably, between the outer circumferential face and the inner peripheral surface in described bearing sleeve portion of described tubular input shaft, be provided with case inner sealing Sealing, described case inner sealing Sealing is for sealing the inside of described fertilising drive cassette.
By having this structure, due to fertilising drive cassette bearing sleeve portion and be embedded in this bearing sleeve portion tubular input shaft outer circumferential face between seal with Sealing, therefore, even if fertilising drive cassette is taken out axle from traveling power take off, also can suppress the leakage from the lubricant oil in fertilising drive cassette, thus be easy to carry out upkeep operation.
Accompanying drawing explanation
Fig. 1 is the left side view of riding type rice transplanter.
Fig. 2 is the schematic diagram representing power-transmission system.
Fig. 3 is the in-built sectional view representing fertilising drive cassette.
Fig. 4 is the sectional view of the decomposing state representing fertilising drive cassette.
Description of reference numerals
3: gearbox
4: fertilizer apparatus
74: traveling power takes out axle
75: spline embedding part
76: Sealing
76a: the first Sealing
76b: the second Sealing
80: fertilising drive cassette
81: tubular input shaft
82: bearing sleeve portion
98: case inner sealing Sealing
Embodiment
Below, the example of description to mode of execution of the present utility model is with reference to the accompanying drawings described.
In explanation of the present utility model, as illustrated without special, fore-and-aft direction and left and right directions as described below.Specifically, the direct of travel (the arrow F with reference to Fig. 1) of the advance side when body operation travels is " front ", the direct of travel (arrow B with reference to Fig. 1) retreating side is " afterwards ", with the posture forward along described fore-and-aft direction for benchmark, the direction of right side correspondence is " right side ", equally, the direction of left side correspondence is " left side ".
(overall structure of riding type rice transplanter)
Fig. 1 illustrates the left surface of the riding type rice transplanter of the example as working in paddy field of the present utility model.
This riding type rice transplanter has self-propelled type travel machine body 1, travel machine body 1 has pairing left and right steering operation as running driving device and the free trailing wheel 11R that freely drives of the front-wheel 11F that drives and pairing left and right in the below of organism frame 10, receive the power from the motor E being loaded in organism frame 10, thus drive described front-wheel 11F and trailing wheel 11R.
Travel machine body 1 has the power part 13 being built-in with motor E, and power part 13 to be positioned on Drive Section horse block 14 and to be positioned at front part of a body.Power part 13 rear side and on the Drive Section horse block 14 of the central part of the fore-and-aft direction of travel machine body 1, have and take Drive Section, described in take Drive Section there is steering tiller 15 and driver seat 12, steering tiller 15 couples of front-wheel 11F carry out steering operation.
Fertilizer apparatus 4 is mounted with at the rear portion of driver seat 12.Fertilizer apparatus 4 by the fertilizer being stored in receptacle 40 by established amount successively never illustrated delivery device send, send into the setting parameter 41 being equipped in seeding transplantation apparatus 2 via not shown feed path, thus be provided to farmland.At the rear side of travel machine body 1, be supported with seeding transplantation apparatus 2 via linkage mechanism 25 in the mode be freely elevated, linkage mechanism 25 has lifting action oil hydraulic cylinder 26.
The riding type rice transplanter with said structure by seeding transplantation apparatus 2 by the rice shoot transplanting of paddy rice etc. to farmland.
Seeding transplantation apparatus 2 is 6 row transplanting types, there are transmission case 21, transplanting case 22, transplanting arm 23 (transplanting pawl driving mechanism), kickboard of contacting to earth 24 and seedling carrying stand 20 etc., transplanting case 22 is freely to turn round the lateral sides that the mode driven is bearing in the left and right sides at the rear portion of described transmission case 21, have a pair transplanting arm 23 at the two ends of transplanting case 22, seedling carrying stand 20 loads rice shoot.Drive seedling carrying stand 20 along with coming and going laterally transfer in the lateral direction, revolution drives transplanting case 22, transplanting arm 23 alternately take out rice shoot from the bottom of seedling carrying stand 20 and transplanting in face, farmland.
In the front portion of the organism frame 10 of travel machine body 1, link and be fixed with gearbox 3, gearbox 3 axle support front wheel 11F.In the left and right sides of gearbox 3, front truck axle box 3A extends outside two to the left and right, is provided with front-wheel 11F, 11F of the left and right sides at front truck axle box 3A.
Front baffle 10F forwards extends from gearbox 3, has described motor E at this front baffle 10F aburton.Have rear car axle box 19 at the rear support of organism frame 10, rear car axle box 19 is equipped with trailing wheel 11R, 11R in the left and right sides.
(power-transmission system)
The power of motor E inputs to gearbox 3, in gearbox 3, difference exports running and driving system and apparatus for work drive system to, running and driving system is for driving front-wheel 11F and trailing wheel 11R etc., and apparatus for work drive system is for driving seeding transplantation apparatus 2 as apparatus for work or seeding apparatus (not shown).
As shown in Figure 2, with regard to gearbox 3, hydrostatic stepless speed changes devices 61 is linked with at the left horizontal sidepiece of the upper side of the case body 30 of gearbox 3, at the right horizontal sidepiece of case body 30, be linked with oil hydraulic pump 62, oil hydraulic pump 62 is driven by the revolution of the input shaft 61a of hydrostatic stepless speed changes devices 61.
The power of motor E is passed to hydrostatic stepless speed changes devices 61 via tape handler.Hydrostatic stepless speed changes devices 61 has neutral stop position, can from neutral stop position march forward side and retreat side freely carry out stepless change.
The power of motor E, via the speed change output shaft 61b of hydrostatic stepless speed changes devices 61, the secondary gear 60A of the first transmission shaft 63, first, the secondary gear 60B of second driving shaft 65, second, the 3rd transmission shaft 67, differential attachment 72 and front wheel driving shaft 71, is passed to pairing left and right front-wheel 11F.The mode of pair of rear wheels 11R transferring power is as follows to the left and right, via the speed change output shaft 61b of hydrostatic stepless speed changes devices 61, the secondary gear 60A of the first transmission shaft 63, first, the secondary gear 60B of second driving shaft 65, second, the 3rd transmission shaft 67, differential attachment 72, travel output shaft 74 (be equivalent to traveling power and take out axle), rear transmission shaft 77, drive shaft of rear wheel 78 and side clutch 73 transmit.
The power being passed to gearbox 3 of motor E is except difference drives to above-mentioned running and driving system, also difference drives to transplanting device drive system and fertilizer apparatus drive system, transplanting device drive system is by transmission of power to seeding transplantation apparatus 2, and fertilizer apparatus drive system transfers a driving force to fertilizer apparatus 4.
Wherein, the operation output gear 27 had via second driving shaft 65 is to seeding transplantation apparatus 2 difference transmission driving force.The power being passed to operation output gear 27 is derived outside gearbox 3 through the not shown driving mechanism being positioned at gearbox 3, and is passed to seeding transplantation apparatus 2 through transplanting power transmission shaft 29.
In apparatus for work drive system, to the fertilizer apparatus drive system of fertilizer apparatus 4 transmission of drive force, there is following structure.
As shown in Figures 2 and 3, the fertilising drive cassette 80 formed with gearbox 3 split is provided with in the rear portion side of gearbox 3.
Described traveling output shaft 74 inserts described fertilising drive cassette 80, travels the transmission of power of output shaft 74 to fertilising PTO axle (pto=power take-off) 85.
That is, as shown in Figures 2 and 3, with regard to fertilising drive cassette 80, spline is entrenched in the tubular input shaft 81 travelling output shaft 74 and is equipped in bearing sleeve portion 82, and bearing sleeve portion 82 is located at the bottom of fertilising drive cassette 80.Difference gear 81a is formed at the peripheral part of tubular input shaft 81, fertilising drive cassette 80 has relay axis 83 and fertilising PTO axle 85, relay axis 83 has the relay gear 83a engaged with described difference gear 81a, and fertilising PTO axle 85 has the output gear 84 engaged with relay gear 83a.The transmission shaft 42 to fertilizer apparatus 4 transfer motion power is linked with at fertilising PTO axle 85.Fertilising drive cassette 80 links via construction bolt etc. the rear portion side being fixed on gearbox 3.
(structure of fertilising drive cassette)
As shown in Figure 3 and Figure 4, the case part i.e. front side case part 80A and rear side case part 80B that the drive cassette 80 that applies fertilizer is split by front and back combines.On front side of this, case part 80A and rear side case part 80B is interconnected by binder bolt 80C, and binder bolt 80C is arranged on the peripheral flange portion near the outer periphery of fertilising drive cassette 80.
On the top of rear side case part 80B, a part for the tank wall of rear side case part 80B is that tubular extends rearward, thus forms bellying 86, and bellying 86 is for built-in fertilising clutch 90.And then in the bottom of bellying 86, be formed with axle holding part 87 with rear side case part 80B, axle holding part 87 is for the clutch operating axle 93 of pivot suspension fertilising clutch 90.
Between the inner peripheral portion 81b and the peripheral part 74a travelling output shaft 74 of tubular input shaft 81, be provided with spline embedding part 75, the inner peripheral portion 81b of tubular input shaft 81 is bearing in bearing sleeve portion 82, and bearing sleeve portion 82 is arranged on fertilising drive cassette 80.Thereby, it is possible to plug tubular input shaft 81 relative to described traveling output shaft 74, from the bearing sleeve portion 82 travelling the tubular input shaft 81 extracted of output shaft 74 and be bearing in fertilising drive cassette 80.
To be entrenched in by described spline embedding part 75 spline fitted in the tubular input shaft 81 travelling output shaft 74 and to travel output shaft 74, and with traveling output shaft 74 unitary rotation.
The difference gear 81a being formed in the peripheral part of tubular input shaft 81 is engaged on relay gear 83a, and relay gear 83a is bearing in relay axis 83.
Further, the output gear 84 engaged with relay gear 83a is arranged on fertilising PTO axle 85 in the mode rotated relatively freely.With regard to this output gear 84, in the inner circumferential side of outer circumferential face being entrenched in fertilising PTO axle 85, be formed with engaging teeth portion 84a, engaging teeth portion 84a can engage with the engaging tooth 91a of following fertilising clutch 90.
Fertilising clutch 90 spline is entrenched in spline part 85a, spline part 85a is formed in the peripheral part of fertilising PTO axle 85, fertilising clutch 90 have tubular clutch component 91 and by pressing spring 92, clutch component 91 is relative to fertilising PTO axle 85 integrated rotary, and, can slide relative to fertilising PTO axle 85 in the axial direction, by pressing spring 92, to output gear 84 side, pressing force be applied to this clutch component 91.
Clutch component 91 with described end of pressing the opposition side of the side of pressing spring 92 subtend, be formed with engaging tooth 91a, engaging tooth 91a by carrying out moving back and forth relative to engaging teeth portion 84a, thus can engage and depart from.Engaging teeth portion 84a is formed as a part for output gear 84.
In the end of the opposition side of the side of the described engaging tooth 91a of formation clutch component 91, be formed with lip part 91b.This lip part 91b is arranged to and operates lug 93a and engage, and operation lug 93a is formed in the end being positioned at the inward side of fertilising drive cassette 80 of clutch operating axle 93.Thus, by the axle center y1 around clutch operating axle 93, revolution operation is carried out to clutch operating axle 93, handover operation can be carried out between clutch opening state and clutch dissengaged positions, described clutch opening state is the state making clutch component 91 and output gear 84 integrated rotary, and described clutch dissengaged positions is the state of the integrated rotary removing clutch component 91 and output gear 84.
That is, when carrying out revolution operation around axle center y1 to a direction to clutch operating axle 93, protrusion is arranged on the operation lug 93a at the position of departing from described axle center y1 to the lip part 91b of clutch component 91, from the state shown in the solid line of Fig. 3, the mode slide clutch component 91 of the applying power of pressing spring 92 is pressed with opposing, thus the state shown in dotted line of left in handover operation to figure, clutch dissengaged positions can be entered thus.When carrying out revolution operation to clutch operating axle 93 round about around axle center y1, from the state shown in the dotted line of Fig. 3, by pressing the applying power of pressing spring 92, by clutch component 91 slide to opposite direction, thus the clutch opening state shown in solid line of right in recovery operation to figure.
Clutch operating axle 93 is by axle holding part 87 pivot suspension, and axle holding part 87 is formed in the tank wall of rear side case part 80B.Further, the end being positioned at the opposition side of the end of the side arranging described operation lug 93a of clutch operating axle 93 is protruded to compared with axle holding part 87 as the lower side of the outward side of the drive cassette 80 that applies fertilizer.At the protrusion shaft portion 93b of the clutch operating axle 93 protruded to the outward side of the drive cassette 80 that applies fertilizer compared with axle holding part 87 as described above, be provided with clutch arm 94, clutch arm 74 is for carrying out revolution operation to described clutch operating axle 93 around described axle center y1.Described clutch arm 94 is rotated around the axle center y1 of clutch operating axle 93, thus fertilising clutch 90 is opened and rupturing operation.
Tubular input shaft 81 has the length with bearing sleeve portion 82 total length same degree in the longitudinal direction, and tubular input shaft 81 is bearing in bearing sleeve portion 82, and bearing sleeve portion 82 is arranged on the bottom of fertilising drive cassette 80.Via bearing 97 with this tubular input shaft 81 of the mode pivot suspension freely rotated, bearing 97 is arranged on slightly to the position that gearbox 3 side is shifted compared with the middle position of the length direction of this tubular input shaft 81, and is arranged between this tubular input shaft 81 and the inner peripheral surface in bearing sleeve portion 82.
Engage with the relay gear 83a of relay axis 83 at the difference gear 81a had away from the side of gearbox 3 compared with bearing 97.That is, in the front and back of the middle position of the length direction of tubular input shaft 81, be configured with bearing 97 and difference gear 81a with the state of separate configuration.
And, as compared to the Present site of described bearing 97 with difference gear 81a, at the position of the close tip side of the both sides, front and back in bearing sleeve portion 82, be provided with case inner sealing Sealing 98, the outer circumferential face side of tubular input shaft 81 can be used as the parts of the inner space of sealing fertilising drive cassette 80.
Thus, as shown in Figure 4, travel output shaft 74 even if extract from tubular input shaft 81, the lubricant oil enclosing fertilising drive cassette 80 inside also can be avoided externally to reveal.
Between the inner peripheral portion 81b of tubular input shaft 81 with said structure and the peripheral part 74a travelling output shaft 74, the mode clipping above-mentioned spline embedding part 75 in the front and back of axial direction travelling output shaft 74 is provided with the Sealing 76 be made up of synthetic resin material or copal material.
The seal 76 invades between the inner peripheral portion 81b of tubular the input shaft 81 and peripheral part 74a travelling output shaft 74 for suppressing earth or dust, the seal 76 clips spline embedding part 75, there is the first Sealing 76a and the second Sealing 76b, first Sealing 76a is equipped in the side away from gearbox 3, and the second Sealing 76b is equipped in the side near gearbox 3.
First Sealing 76a is made up of the ring-shaped member being formed as band plate-like, larger than the area of contact of the second Sealing 76b.
Second Sealing 76b is made up of circular O type circle, less than the area of contact of the first Sealing 76a.
As shown in Figure 3 and Figure 4, the first Sealing 76a be embedded in the inner peripheral portion 81b of tubular input shaft 81 compared with spline embedding part 75 away near the end of gearbox 3 side.Under above-mentioned installment state, the first Sealing 76a is contacting with the peripheral part 74a travelling output shaft 74 away from the side of gearbox 3 compared with spline embedding part 75.
Second Sealing 76b is fitted in all slot part 74b be formed near the position of gearbox 3 side compared with spline embedding part 75 of the peripheral part 74a of traveling output shaft 74.Under above-mentioned installment state, the second Sealing 76b contacts with near the end of the inner peripheral portion 81b of tubular input shaft 81 in the side near gearbox 3 compared with spline embedding part 75.
(other mode of executions)
In the above-described embodiment, to be made up of the ring-shaped member of band plate-like exemplified with the first Sealing 76a and the structure that is made up of O type circle of the second Sealing 76b, but the utility model is not limited to this structure.
Such as, two Sealings 76a, 76b also can be made up of the ring-shaped member of the different band plate-like of width, also can be made up of the O type circle that profile diameter is different.
Further, also can use the O type circle with same profile diameter of varying number, thus make area of contact different.
In addition, replace area of contact, contact also can be made different, or make area of contact and contact all different.
In addition, the first Sealing 76a and the second Sealing 76b also can have identical sealing.
Other structures can adopt the structure identical with above-mentioned mode of execution.
(utilizability in industry)
The utility model is not limited to the riding type rice transplanter being equipped with seeding transplantation apparatus, also can be applicable to the riding-type direct seeding machine and other working in paddy field that are equipped with live broadcast device.

Claims (6)

1. a working in paddy field transmission device, is characterized in that,
Have: gearbox, be built-in with the gear of running and driving system; And
Fertilising drive cassette, forms with described gearbox split, is built-in with the driving mechanism to fertilizer apparatus transferring power,
Described fertilising drive cassette has: tubular input shaft, takes out axle fitted in traveling power, and takes out axle unitary rotation with described traveling power, and described traveling power takes out axle and extends from described gearbox; And bearing sleeve portion, tubular input shaft described in pivot suspension,
Described traveling power takes out axle and described tubular input shaft can pass through spline embedding part transferring power, between the peripheral part that described spline embedding part is formed at described traveling power taking-up axle and the inner peripheral portion of described tubular input shaft, and,
Between the peripheral part taking out axle at described traveling power and the inner peripheral portion of described tubular input shaft, and in the both sides, front and back of described spline embedding part of axial direction of taking out axle along described traveling power, be equipped with Sealing.
2. working in paddy field transmission device according to claim 1, is characterized in that,
Described Sealing has the first Sealing and the second Sealing in the mode clipping described spline embedding part, described first Sealing is equipped in the side away from described gearbox, described second Sealing is equipped in the side near described gearbox, further, described first Sealing is higher than the sealing of described second Sealing.
3. working in paddy field transmission device according to claim 2, is characterized in that,
Described in the contact area rate of described first Sealing, the second Sealing is large.
4. working in paddy field transmission device according to claim 3, is characterized in that,
Described first Sealing is made up of the ring-shaped member of band plate-like.
5. working in paddy field transmission device according to claim 4, is characterized in that,
Described second Sealing is made up of O type circle.
6. working in paddy field transmission device according to any one of claim 1 to 5, is characterized in that,
Between the outer circumferential face and the inner peripheral surface in described bearing sleeve portion of described tubular input shaft, be provided with case inner sealing Sealing, described case inner sealing Sealing is for sealing the inside of described fertilising drive cassette.
CN201520978833.5U 2015-12-01 2015-12-01 Transmission for paddy field working machine Active CN205226300U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201520978833.5U CN205226300U (en) 2015-12-01 2015-12-01 Transmission for paddy field working machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201520978833.5U CN205226300U (en) 2015-12-01 2015-12-01 Transmission for paddy field working machine

Publications (1)

Publication Number Publication Date
CN205226300U true CN205226300U (en) 2016-05-11

Family

ID=55901367

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201520978833.5U Active CN205226300U (en) 2015-12-01 2015-12-01 Transmission for paddy field working machine

Country Status (1)

Country Link
CN (1) CN205226300U (en)

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