JPH0338980Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field of the Invention] The present invention relates to an agricultural machine, such as a rice transplanter or a seeding machine, which is provided with a traveling body so that it can roll freely, and relates to a rolling angle regulating device for the agricultural machine.

[Prior art]

Conventionally, this type of rolling angle regulating device for agricultural machinery centered around a rolling shaft is controlled by a regulating plate fixed to the tip of the rolling shaft, which is brought into contact with a connecting frame that fixes a bearing holder, or by connecting The rolling shaft and the rolling frame are connected by simply extending the abutment member from a position away from the center of the rolling frame, and by using the regulating member itself that regulates the rolling angle. Or, since the bearing holder and the connection frame are not reinforced, their own strength is required to strengthen the connection, resulting in an increase in overall weight.

[Purpose of invention]

The present invention was devised in view of the above-mentioned conventional circumstances and to eliminate these drawbacks, and includes a guide frame for reinforcing the connection between the rolling shaft and the rolling frame, and a connection between the bearing holder and the connecting frame. It is an object of the present invention to provide a rolling angle regulating device for an agricultural working machine that can be used as a regulating mechanism for regulating the rolling angle of the agricultural working machine by using a reinforcing connecting plate.

[Structure of the idea]

A rolling angle regulating device for an agricultural machine according to the present invention that achieves the above object fixes a bearing holder extending in the front-rear direction to a vertically connecting frame provided on a traveling machine body, and works by being rotatably supported by this bearing holder. A rolling shaft on the side is fixed in a cantilever manner to a substantially central part of a rolling frame extending laterally, and the base of the rolling shaft and the central part of the rolling frame are further connected and fixed by a vertical guide frame. At the same time, the connecting frame and the bearing holder are connected and fixed by a vertical connecting plate facing the guide frame for reinforcement, and the rolling shaft is centered between the guiding frame and the connecting plate facing each other. This is characterized by the interposition of a regulating mechanism that regulates the rolling angle of the agricultural machine.

〔Example〕

Hereinafter, the drawings showing the present invention as an embodiment will be explained.

As shown in FIG. 4, the riding rice transplanter 1 is composed of a riding machine body 2 and a planting section 3, which is a working part connected to the rear of the riding machine body 2. This riding machine body 2 is constructed as follows. It's getting old.

That is, by winding the V-belt 8 between the input pulley 5 of the front transmission case 4 and the engine pulley 7 of the engine 6 disposed above the front, the front transmission case for front wheel drive 4 is designed to be driven by an engine 5 disposed at the upper front, and above the front transmission case 4 and the rear transmission case 9 for rear wheel drive are the fuselage frames disposed on the left and right. 10, 10, and below the transmission shaft cover 1.
1. The fuselage frame 10
The front mounting plate 12 fixed to the front end face is fixed to the rear end of the front transmission case 4 with bolts, and the rear mounting plate 13 fixed to the rear end face is fixed to the upper part of the rear transmission case 9. The transmission shaft cover 11 is fixed to the rear end of the front transmission case 4 and the bearing holder 22 on the front side of the rear transmission case 9 by means of mounting seats fixed to both ends thereof. It is becoming fixed.

Wheel cases 14, 14 are fixed to the left and right sides of the front transmission case 4, respectively, and a steering case 15 that rotates around a vertical axis is provided below each wheel case 14. Mukai case 1
A front wheel 17 is fixed to a front wheel shaft (not shown) rotatably protruding from the front wheel 5, and the front wheel 17 is driven by the front transmission case 4.
Each of the steering cases 15 can be steered about a longitudinal axis by turning a steering handle 18.

Rear wheels 21 are fixed to rear wheel shafts (not shown) that are rotatably supported on both left and right sides of the rear transmission case 9, and a front transmission case is disposed inside the transmission shaft cover 11. A transmission shaft 24 for driving a transmission mechanism in the rear transmission case 9 passes through the transmission mechanism in the rear transmission case 9 .

Power take-off shaft 2 installed in the front transmission case 4
0 extends rearward through the upper part of the fuselage frame 10, and the rear thereof is supported by a bearing fixed to one of the left and right vertical frames 31, 31 fixed vertically on the fuselage frame 10. The vertical frames 31, 31 on the left and right have an up-and-down link 3 of a lifting device 33 that lifts and lowers the planting device 3.
4 and the left and right lower links 35, 35, whose base ends are pivotally connected to each other, and left and right connecting plates 36, 3 fixed downwardly at the midpoint of the upper link 34.
6 and the rear end of the front transmission case 4, a hydraulic expansion/contraction mechanism 37 is pivotally connected. connecting frame 2
5 are respectively pivotally connected to form a parallel link mechanism, and are adapted to move up and down in parallel by the expansion and contraction of the hydraulic expansion and contraction mechanism 37.

As shown in FIG. 1, the connecting frame 25 has left and right link holders 38, 38 facing each other in the vertical direction across the upper link 34 at the center, and a lower center located above the left and right link holders 38, 38. U-shaped spring holder 3 to which the part is fixed
9, and left and right lower links 35, which are fixed at both ends by passing through the left and right link holders 38, 38 in the horizontal direction.
A support shaft 41 pivotally connects the rear ends of 35 to each other.
A bearing holder 40 is fixed to the lower ends of the left and right link holders 38, 38 and extends in the front-rear direction, and a bearing holder 40 is fixed to the thick end surfaces of the left and right link holders 38, 38, and the lower end thereof is fixed to the bearing holder 40. A stop pin 43 is fixed to the upper center of the connecting plate 42 and protrudes toward the rear side. The bearing holder 40 fixed to the lower ends of the link holders 38, 38 is further fixed by a connecting plate 42 which is fixed to the thick end surface of the link holders 38, 38 and whose lower end is fixed to the bearing holder 40. As a result, the rigidity of the device itself is increased, and at the same time, the connection and fixation between the two is reinforced.

On the other hand, in the planting section 3, a float 48 that slides on the rice field is provided below, and a body 49 that also serves as a transmission case is provided on the float 48. A seedling mounting table 50 is arranged so as to be horizontally movable back and forth in the left-right direction, and a pair of left and right seedling planting rods 51 are arranged below the seedling mounting table 50, respectively. Further, a transmission shaft 26 is provided for driving a transmission mechanism in the fuselage body 49 which also serves as a transmission case, and this transmission shaft 26 is connected to a power take-off shaft 30 on the passenger vehicle body 2 side by a universal joint provided at the tip. It is becoming more and more common.

A base portion of a rolling shaft 45 extending forward is fixed to a substantially central portion of a rolling frame 44 fixed to the front of the fuselage 49 and extending laterally, so that the rolling shaft 45 protrudes in a cantilevered manner. A rolling shaft 45 provided therein and fixed to the rolling frame 44 in a cantilevered manner further includes a guide frame 4 having a U-shaped cross section oriented in the vertical direction.
6 is connected and reinforced. That is, the base of the rolling shaft 45 is fixed to the center of the rolling frame 44, and both are further connected and fixed by a guide frame 46 having a U-shaped cross section for reinforcement. Insert the mounting hole drilled into the rolling shaft 45,
The periphery of the mounting hole is welded to the rolling shaft 45, and the recessed portions formed on both sides of the mounting hole are welded to the rolling frame 44, thereby coupling the rolling shaft 45 in the front-back direction and the rolling frame 44 in the left-right direction. It is now possible to strengthen the structure more firmly.

A long hole 47 into which the stop pin 43 is fitted is provided at a position of the guide frame 46 facing the stop pin 43 on a radius centered on the axis of the rolling shaft 45. The rolling angle of the rolling frame 44, which swings about its axis, is limited within a predetermined range, and the stop pin 43 and the elongated hole 47 constitute a regulating mechanism. The tip of a body 49, which also serves as a mission case, can be fixed to a mounting hole 23 provided on the side surface of the guide frame 46 using bolts and nuts.

Further, the other ends of the pair of left and right balance springs 52, one end of which is fixed to both sides of the spring holder 39, are fixed to hanging fittings 53 provided on the left and right sides of the rolling frame 44, respectively, and are fixed to the upper end of the spring holder 39. The other ends of a pair of left and right balance springs 55, one end of which is fixed to both ends of the horizontal hanging fixture 54, are fixed to a hanging fixture 56 provided on the back side of the horizontally moving seedling mounting table 50. .

When the passenger body 2 tilts in the left-right direction due to unevenness of the tiller, etc., the connecting frame 25 also tilts in the same direction as the passenger body 2, but at this time, the float 4
The planting part 3 that is connected to the ground via the rolling shaft 45
The seedlings can be oriented horizontally with the rolling frame 44 as the center and can be maintained horizontally, thereby making it possible to make the left and right seedling planting depths uniform. Moreover, the balance spring can prevent disturbance of the horizontal balance when the seedling mounting table 50 moves laterally.

In the present invention, the rolling shaft 45 extending forward and the rolling frame 44 extending in the lateral direction can be firmly connected and reinforced by the guide frame 46, and the link frame 45 in the vertical direction can be firmly connected and reinforced by the connecting plate 42. 38, 38 and the front-back bearing holder 40 can be firmly connected and reinforced, and by using the guide frame 46 and the connecting plate 42 that face each other, the shaft center of the rolling shaft 45 can be firmly connected and reinforced. Regulating mechanisms 43 and 47 that restrict the rolling angle of the planting section 3 can be provided. This eliminates the conventional disadvantage of requiring its own strength to strengthen the connection between the rolling shaft and the rolling frame, or the connection between the bearing holder and the connection frame, which increases the overall weight. can.

[Effect of idea]

In short, in the rolling angle regulating device for agricultural machinery according to the present invention, a bearing holder extending in the front-rear direction is fixed to a vertical connection frame provided on the traveling machine body, and the working part side is rotatably supported by the bearing holder. The rolling shaft is fixed in a cantilevered manner to the approximate center of the rolling frame, which extends horizontally.
The base of the rolling shaft and the center of the rolling frame are further connected and fixed by a vertical guide frame for reinforcement, and the connecting frame and the bearing holder are connected and fixed by a vertical connecting plate facing the guide frame. By interposing a regulating mechanism that regulates the rolling angle of the agricultural machine around the rolling shaft between the guide frame and the connecting plate that face each other, the guide frame allows the rolling shaft and the rolling The frame can be firmly connected and reinforced, and the connecting plate and the bearing holder can be firmly connected and reinforced. Moreover, by using the mutually opposing guide frame and connecting plate, it is possible to provide a regulating mechanism that regulates the rolling angle of the agricultural machine about the rolling shaft.

This eliminates the conventional disadvantage of requiring its own strength to strengthen the connection between the rolling shaft and the rolling frame, or the connection between the bearing holder and the connection frame, which increases the overall weight. can.

[Brief explanation of drawings]

The drawings show one embodiment of the present invention,
Fig. 1 is an exploded perspective view of the main parts, Fig. 2 is an enlarged side view of the main parts, Fig. 3 is an enlarged front view of the main parts, and Fig. 4 is an overall side view of the riding rice transplanter. 2... Airframe, 25... Connection frame, 28...
Link frame, 40...Bearing holder, 42...
Connection plate, 43, 47...Regulation mechanism, 44...Rolling frame, 45...Rolling shaft, 46...
...Guidance frame.

Claims (1)

[Scope of utility model registration request] Approximately at the center of the rolling frame, a bearing holder extending in the front-rear direction is fixed to a vertical connection frame provided on the traveling aircraft, and a rolling shaft on the working part side, which is rotatably supported by the bearing holder, extends laterally. The base of the rolling shaft and the center of the rolling frame are further connected and fixed by a vertical guide frame for reinforcement, and the connecting frame and bearing holder are opposed to the guide frame. A regulating mechanism is interposed between the mutually opposing guide frame and the connecting plate to regulate the rolling angle of the agricultural machine about the rolling axis. Rolling angle regulating device for agricultural machinery.