JP2552075Y2 - Transmission structure of walking type agricultural transplanter - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a transmission structure of a walking type agricultural transplanter such as a rice transplanter or an upland transplanter.

[0002]

2. Description of the Related Art In general, a walking type agricultural transplanter has a body frame supported by wheels, an engine and a transmission case are arranged in front of the body frame, and seedlings are mounted in a rear part of the body frame. A stand, an operation handle, and the like are provided. A mat seedling is placed on the seedling mounting table, and the seedling mounting table is moved laterally to perform planting with a planting rod. Then, the drive of the planting rod and the seedling mounting table to the left and right lateral movement device is such that a transmission mechanism such as a chain, a transmission shaft and the like extends from the transmission case to which rotation from the engine has been transmitted to a rear portion of the body, The transmission mechanism drives a planting rod provided below the seedling table at the rear of the machine body, and moves left and right on a screw shaft provided on the back surface of the seedling table. The slide bar moves left and right by the sliding block, and the seedling mounting table moves left and right and sideways.

[0003]

However, in the above-described configuration, the planting rod below the seedling mounting table is driven by the transmission mechanism extending to the rear of the machine body, and the lower portion of the rear surface of the seedling mounting table is driven. Since the lateral movement devices such as the screw shaft, slide block, and slide bar are driven, the rear part of the body becomes heavy, the weight balance between the body and the body is poor, and the length of the whole body becomes long and the weight of the body becomes heavy. .

Therefore, the present invention provides a planting rod connected to a transmission case and driven by a transmission mechanism built in a body frame below and in front of a seedling mounting table. It is arranged side by side with the transmission mechanism of the planting rod and extends rearward.A lateral movement arm is provided at the rear end of the rotating shaft, and the upper end of the lateral movement arm is connected to the front side of the seedling mounting table, and the seedling mounting table is mounted. By placing the planting rod and the lateral moving device of the seedling pedestal in front of the seedling pedestal, the weight balance between front and rear is improved, the length of the body is shortened, and the size and weight are reduced. It is an object of the present invention to provide a simple walking agricultural transplanter.

[0005]

Means for Solving the Problems In order to solve the above-mentioned problems, technical measures taken by the present invention are to dispose an engine and a transmission case at the front of the body and mount a seedling at the rear of the body. In a walking type agricultural transplanter having a table, a planting rod driven by a transmission mechanism built in a body frame connected to the transmission case to which rotation from the engine is transmitted, and the transmission case Fixed to the center of a swing arm driven by a screw shaft disposed therein, and extends rearward from the transmission case and is fixed to a rear end of a rotary shaft juxtaposed to a transmission mechanism of a planting rod. And a laterally moving arm disposed in front of the seedling mounting table.

[0006]

In the walking type agricultural transplanter of the present invention, the output of the engine disposed at the front is input to the power transmission device in the transmission case, and the wheels are driven via the transmission. At this time, the seedlings are planted by driving the planting rod disposed on the front side of the seedling mounting table from the transmission shaft in the transmission case by the transmission mechanism provided in the body frame connected to the transmission case. In addition, the screw shaft arranged in the upper part in the transmission case is rotated by the torque transmitted from the engine,
The swing arm swings about the rotation axis by driving the screw shaft. Then, the horizontal movement arm fixed to the rear end of the rotation shaft is swung by the forward / reverse rotation of the rotation shaft, and the upper end of the horizontal movement arm is connected to the front side of the seedling mounting table. The table is moved left and right. Therefore, since the transmission mechanism for transmitting the output from the engine is not provided behind the seedling mounting table, the weight of the rear part and the entire body can be reduced, the weight balance can be improved, and the length of the body can be shortened. In addition, it constitutes a small and lightweight walking type agricultural transplanter.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described with reference to the drawings. Reference numeral 1 denotes a walking-type transplanter, in which an engine 3 and a transmission case 4 are vertically integrated at the front of the body of the transplanter 1. The transmission case 4 and the planting work section 7 at the rear of the body are integrally connected and supported by a body frame 1a, and the connection height of the body frame 1a is provided lower than the axle 2a of the left and right traveling wheels 2. In the planting work section 7 at the rear of the machine, a seedling mounting table 5 on which mat seedlings are mounted is provided.
Are supported movably in the machine body width direction, and a planting rod 6 is provided in front of the seedling mounting table 5. On the left and right sides of the fuselage, the traveling wheels 2 are supported by an axle 2a via wheel transmission cases 9 supported on output shafts 8 projecting from the left and right side surfaces of the transmission case 4 so as to be vertically swingable. I have. Also, below the body frame 1a,
A float 10 is provided along the front-back direction.

[0010] The power of the engine 3 is transmitted through the transmission case 4 to the planting work section 7 and the traveling wheels 2. A transmission case 4 is provided below the engine 3.
Is transmitted from the PTO shaft 11 to the main shaft 13 in the transmission case 4 via the gear group 12. A planter drive shaft 14 is rotatably supported adjacent to the main shaft 13, and a counter shaft 15 is rotatably supported adjacent to the other main shaft 13. Output shaft cases 8b, 8b are fixed to the front end of the transmission case 4, and wheel transmission cases 9, 8b are attached to the output shaft cases 8b, 8b.
Nine cylindrical portions 8a, 8a are swingably inserted and fitted. Further, left and right output shafts 8, 8 are rotatably supported by the output shaft cases 8b, 8b. The axle 2a is connected to the wheel transmission case 9 via a chain from a sprocket 8c fixed to the end of the output shaft 8. The power is transmitted to the traveling wheels 2 supported by the vehicle. A planter shaft 16 is rotatably supported by the transmission case 4 alongside the counter shaft 15.

As shown in FIG. 3, interplant transmission gears A and B, which are shift gears, are fixed to the planter drive shaft 14, and the transmission gear body 17 can be selectively meshed with the interstock transmission gears A and B. Are slidably supported, and a small gear C and a middle gear D are formed on the transmission gear body 17.
A small gear 18 and a large gear 19 are fixedly mounted on the counter shaft 15, and side clutches 20, 2 are mounted on the output shafts 8, 8.
0 is provided, and these side clutches 20 and 20 are provided.
Is configured such that the final gear 21 pivotally supported by the output shafts 8, 8 can mesh with one or both of the left and right output shafts 8, 8. A reverse gear 25 is slidably and rotatably mounted on the planter shaft 16 and a planter clutch 26 is slidably mounted thereon. The planter clutch 26 can be engaged and the planter shaft 16 is The sprocket 28 and the sprocket 29 provided at the end of the planter drive shaft 14 are connected via a chain 30 to an outer end of the transmission case 4 of the hollow shaft 27 supported by the transmission case 4.

The planting rod 6 is attached to one end of the planter shaft 16.
A sprocket 16a for transmitting power to the vehicle is provided. The transmission mechanism 31a to the planting rod 6 extends rearward through the sprocket 16a and the hollow body frame 1a, and is provided behind the body frame 1a and in front of the seedling mounting table 5. The chain 31 is wound around a sprocket 16b fixed to a drive shaft 6a for driving the chain 6.

As shown in FIGS. 3, 4, and 5, the transmission case 4 is rotatably supported by a screw shaft 32 extending in the left-right width direction.
Is arranged on the front side of the fuselage with respect to the axle 2a, and a slide block 33 is screwed to the screw shaft 32 so as to slide only. The screw shaft 32 is transmitted from the planter shaft 16 through a sprocket 35, a chain 36, and a sprocket 37. The slide block 33 reciprocates within a predetermined stroke based on the rotation of the screw shaft 32, and Block 33
Is connected to a swing arm 38a fixed to the front end of the lower rotating shaft 39. In FIG. 2, a hatched rotating shaft 39 extends rearward along the side of the body frame 1 a and is rotatably supported.
Further, a lateral movement arm 38b is fixed to the rear end of the rotating shaft 39, and the seedling mounting table 5 is connected to an upper end of the lateral movement arm 38b. Therefore, screw shaft 32
The reciprocation of the slide block 33 based on the rotation of
The seedling mounting table 5 is configured to reciprocate in the machine width direction via the swing arm 38a, the rotating shaft 39, and the lateral movement arm 38b.

As described above, the lateral moving device of the seedling mounting table 5 is such that the rotating shaft 39 fixed to the lower end of the swing arm 38a penetrates the transmission case 4 and extends along the side of the body frame 1a. At the rear of the body frame 1a, it reaches below the front of the seedling mounting table 5, and at the rear end of the rotating shaft 39, a lateral movement arm 38 is provided.
b is fixed facing upward, and the upper end of the lateral movement arm 38b is engaged with a pin 5b projecting forward from a seedling holder 5a attached to the front side of the seedling mounting table 5, and the lateral movement arm 38b The swaying moves the seedling mounting table 5 left and right. Reference numeral 39a is a bracket for pivotally supporting the rotating shaft 39 on the side of the body frame 1a.

Reference numeral 40 denotes a handle stay which is provided to incline rearward and upward from the body frame 1a, and a handle 40a is mounted on an upper portion thereof. Seedling stand 5
By supporting the supporting portion 5b on the upper back surface of the bracket 5 with the adjuster bolt 5c on the bracket 40b provided on the handle 40a, the support of the seedling mounting table 5 can be easily adjusted with a simple structure.

An apron 5d is provided below the seedling mounting table 5, and a lower operation panel 41 is provided below the rear surface. The lower frame 41 is provided on the lower operation panel 41.
and the apron 5d is moved up and down with respect to the seedling mounting table 5 to adjust the amount of seedlings that the planting rod 6 scrapes. Is provided. Further, on the side of the lower operation panel 41, a vertical feed lever 45 for intermittently transferring the mat seedlings in the vertical direction is provided.
6 is connected to a vertical feed drive 47 projecting from the side of the transmission case 4.
7, the vertical feed lever 45 is intermittently rotated in the erecting direction by the intermittent drive, and the vertical feed device 48 provided on the back surface of the seedling mounting table 5 is driven to a predetermined amount of mat seedlings.
It is to be transferred to the d side.

Reference numeral 51 denotes a stay connecting the fuel tank 3a and a front panel 52 at the front of the seedling mounting table 5. The stay 51 is housed inside a bonnet 53 to improve the external appearance. The transmission case 4, the body frame 1a, and the front panel 52 form a rectangular frame structure to improve the strength. Reference numeral 54 denotes a hydraulic operating device for moving the wheel 2 up and down, and this hydraulic operating device is similar to that used in a conventional device. 55 is a traveling shift lever, and 56 is an engine 3
This is the handle for the starter.

In the embodiment of the present invention configured as described above, the planter shaft 16 in the transmission case 4
The seedlings are planted by driving the planting rod 6 disposed on the front side of the seedling mounting table 5 by the chain 31 housed in the body frame 1 a connected to the mission case 4. Further, the screw shaft 32 provided at the upper part in the transmission case 4 causes the swing arm 38 a to swing about the rotation shaft 39 by the rotation force of the engine 3. The reciprocating rotation of the rotating shaft 39 causes the laterally moving arm 38b fixed to the rear end of the rotating shaft 39 and connected to the front side of the seedling mounting table 5 to swing, so that the seedling mounting table 5 moves left and right. Is done. Therefore, since there is no transmission mechanism for transmitting the output from the engine 3, that is, the lateral movement device for the planting rod 6 and the seedling pedestal 5, behind the seedling pedestal, the weight of the rear part and the whole is reduced, and , The length of the fuselage front and rear can be shortened, and the cost can be reduced.

[0017]

[Effects of the Invention] As described above, the present invention arranges the engine and the transmission case at the front of the fuselage,
In a walking type agricultural transplanter having a seedling mounting table disposed at a rear portion of the body, a plant driven by a transmission mechanism housed in a body frame connected to the transmission case to which rotation from the engine is transmitted. A rotation rod fixed to the center of a swing arm driven by a screw shaft disposed in the transmission case and extending rearward from the transmission case, and juxtaposed to a transmission mechanism of the planting rod. Since the lateral movement arm fixed to the rear end of the shaft is arranged in front of the seedling mounting table, the weight balance of the aircraft can be improved,
The longitudinal length of the fuselage can be reduced, and the size and weight of the fuselage can be reduced.

[Brief description of the drawings]

FIG. 1 is a side view of a walking type agricultural transplanter.

FIG. 2 is a plan view of the walking type agricultural transplanter.

FIG. 3 is a sectional development view of a transmission case.

FIG. 4 is a sectional developed view showing a relationship among a screw shaft, a swing arm, and a planter shaft.

FIG. 5 is a side view showing a mission case.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Walking agricultural transplanter 1a Airframe 2 Running wheels 3 Engine 4 Transmission case 6 Planting rod 31a Transmission mechanism 32 Screw shaft 38a Swing arm 38b Lateral movement arm 39 Rotation shaft

Claims (1)

(57) [Scope of request for utility model registration] 1. A walking-type agricultural transplanter in which an engine and a transmission case are disposed at a front portion of a body and a seedling mounting table is disposed at a rear portion of the body, rotation from the engine is transmitted. A planting rod driven by a transmission mechanism built in a body frame connected to the transmission case, and a center of a swing arm driven by a screw shaft disposed in the transmission case; and A walking arm extending rearward from the transmission case and fixed to a rear end of a rotating shaft arranged in parallel with a transmission mechanism of a planting rod, and disposed in front of the seedling mounting table; Transmission structure of a model agricultural transplanter.