JPS6312668Y2 - - Google Patents

Description

[Detailed description of the invention] "Industrial application field" This invention has left and right paddy wheels mounted on the left and right swing cases, which are swingably connected to the aircraft body via tension springs, and the The present invention relates to a rice transplanter equipped with a swing lock device that fixes the wheels and swing case to a rice float in a height-adjustable manner.

``Prior art'' As shown in Japanese Utility Model Application Publication No. 47-20715, there has been a technique in which a swing lock device is provided to fix the swing case to the rice transplanter body in a height-adjustable manner, and the rice paddy wheels are supported by protruding downward from the rice transplanter body. It was hot.

"Problems to be Solved by the Invention" The above-mentioned conventional technology has a structure in which the swing case is directly fixed to the rice transplanting machine body using a swing lock device, so when a pair of rice paddy wheels is provided on the left and right sides, the swing lock devices must also be installed on the left and right sides respectively. This causes structural and functional problems such as the need to provide a step between the left and right paddy wheels, which makes supporting the left and right paddy wheels cumbersome, and making it difficult to simplify the structure of the swing lock device and improve handling operability. It was hot.

Furthermore, as shown in Japanese Patent Application Laid-Open No. 49-131813, a technology is disclosed in which the left and right swing arms, which are integrally connected and fixed, are connected to the left and right swing cases so that the height difference can be adjusted freely, and one swing arm is connected and supported to the rice transplanting machine body via a spring. However, since the swing arm was installed on the output shaft that supports the swing case on the rice transplanter, it was difficult to downsize the swing arm, and the swing arm had to be connected away from the paddy wheel support position of the swing case. As a result, the paddy wheel support load increases and is applied to the swing arm, making it difficult to simplify the swing case mounting structure for the rice transplanter and the swing arm support structure. It is not easy to do this, and since a fixing member for level difference adjustment was provided between the swing case and the swing arm inside the machine, the operator had to put his/her hand between the swing case and the swing arm to adjust the fixing member. Since it is necessary to engage and disengage, and the swing arm etc. cannot be easily covered with a bonnet etc., mud tends to adhere to the fixed parts, making it difficult to ensure safety when adjusting steps at the edge of a ridge just before the end of rice planting. Another problem was that handling and operability could not be easily improved.

``Means for Solving the Problems'' However, in the present invention, the left and right swing cases are swingably supported on the output shaft axis of the rice transplanting machine, and a pair of left and right paddy wheels are attached to each swing case. Further, in a rice transplanter in which a spring for protruding a paddy wheel below the rice transplanter body is connected to a swing case, a swing arm fulcrum shaft having a different axis position from the output shaft is provided on the rice transplanter body, and the swing case is fixedly connected to the rice transplanter body. A swing lock device is connected to the intermediate portion of the swing arm fulcrum shaft via a swing arm, and both sides of the swing arm fulcrum shaft are connected to the left and right swing cases via a pair of left and right connecting arms and a swing bar, and the swing arm The swing bar is provided with a fixing member that is removably engaged with the fixing member, and a lever member that disengages the fixing member. It is characterized by being able to change the length freely.

"Function" Therefore, since the swing arm is attached to the rice transplanting machine at a different position from the swing case, and the connecting arm and swing bar are provided to connect the swing case and the swing arm, the swing case supports the paddy field wheel near the supporting position. The force required to support the swing case can be reduced more easily than before, and the swing arm etc. can be made smaller than before, making it easier to simplify the structure for attaching the swing case to the rice transplanter and the swing arm support structure. The swing lock device can be easily attached via the swing arm, and the level difference between the left and right paddy wheels can be easily adjusted by changing the connection length between the connection arm and the swing bar. The fixing member and the lever member provided in the part can be simply constructed, and it can be handled more safely than in the past, and the handling operability can be easily improved.

"Embodiment" Hereinafter, an embodiment of the present invention will be described in detail based on the drawings. Fig. 1 is a schematic side view of the whole, and Fig. 2 is a plan view of the same. 6 is a float that supports the body consisting of the engine 1 and the cases 2 and 3 via a planting depth adjustment link 7 and a buffer member 8;
9 is a steering handle connected to the rear end of the transmission case 3, and 10 is a seedling with a low front and rear height that is installed along the upper part of the case 3 and the handle 9 via guide members 11 and 12 and is moved back and forth from side to side. The platform 13 is a planting claw that is attached to the transmission case 3 via the crank arm 14 and takes out one seedling from the seedling platform 10 and plants it.

In addition, left and right side clutch levers 15 and 16 are attached to the left and right sides of the operating section of the steering handle 9, and a traveling clutch lever 17 and a swing lock device and a planting clutch device, which will be described later, are operated in conjunction with each other at a position close to the left side clutch lever 15. A single operating lever 18 is provided to control the operation.

Next, see FIGS. 3 and 4 for a swing device that connects the swing cases 5, 5 and the transmission case 3 to support the wheels 4, 4 in a height-adjustable manner relative to the aircraft body and the traveling float 8. To explain, this device includes a swing arm fulcrum shaft 19 that is incorporated into the transmission case 3, connecting arms 20, 20 whose proximal ends are fixed to the fulcrum shaft 19, and the connecting arms 2.
0, 20 through long holes 21a, 21a, and the proximal ends are connected to the swing cases 5, 5.
swing bars 21, 21 that are supported by the swing bars 21, 21, swing bar fixing metals 36, 36, which are fixing members that are appropriately fixed to the connecting arm 20;
The ridge processing levers 37, 37, which are lever members for releasing this fixing by operating the fulcrum shaft 1 as appropriate,
9. A swing lock device 23 attached to the intermediate portion of the rice transplanter via swing arms 22, 22, and a swing arm fulcrum having a different axis position from the output shaft 35, which will be described later, that supports the swing cases 5, 5 on the rice transplanting machine body. A shaft 19 is provided on the rice transplanting machine body, and a swing lock device 23 for fixedly connecting the swing case 5 to the rice transplanting machine body is attached to the swing arm fulcrum shaft 19.
Connected to the intermediate portion via swing arms 22, 22, and a pair of left and right connecting arms 20, 20
and a fixing metal 36 that connects both sides of the swing arm fulcrum shaft 19 to the left and right swing cases 5, 5 via the swing bars 21, 21 and removably engages with the connecting arm 20; A ridge treatment lever 37 for releasing the engagement is provided on the swing bar 21, and the length of connection between the connecting arm 20 and the swing bar 21 can be freely changed by engaging and disengaging the fixing metal 36 of the lever 37. , 4 is configured to adjust the level difference to vary the support height for the rice transplanting machine.

The swing lock device 23 includes a spring case 26 connected to the tips of the swing arms 22, 22 via a parallel pin 24 and a swing stopper 25.
And double springs 27, 2 are attached to the spring case 26.
7, 28, 28, and a receiving member 30 which supports the swing lock shaft 29 in a slidable manner and fixes the proximal end of the swing lock shaft 29;
A swing lock gear 33 is removably connected to a swing lock pin 32 which is connected to the swing lock pin 32 via the swing lock shaft 29.
It is composed of a tension spring 34 provided between the receiving member 30 and the machine body side in order to apply a bias to the swing case 5, and when the lock pin 32 releases the lock, the swing cases 5, 5 are moved to the proximal end, that is, the mission case 2. It is configured to be able to swing freely around an output shaft 35 that projects laterally, and the wheels 4, 4 are configured to be able to move freely in height relative to the fuselage and the float 6.

By the way, as shown in FIG. 5, the operating lever 18 is operated in conjunction with the planting clutch device 38 in addition to the swing lock device 23 described above, and the clutch hawk 39 of the planting clutch device 38 and the aforementioned operation The lever 18 is connected to the lever 18 by a wire 41 via a spring 40, and power is transmitted from the drive shaft 43 to the planting claw 13 and the seedling stand 10 as appropriate by connecting and disconnecting the planting clutch 42 using the clutch hawk 39. It is configured to block it.

Also, each wire 31, 41 connected to the swing lock device 23 and the planting clutch device 38
The other end is connected to a single sliding plate 45 via a guide plate 44.
The other end of this sliding plate 45 is connected to the operating lever 18 via a wire 46. The sliding plate 45 has an intermediate portion that is slidably supported by the guide member 47, and the sliding plate 45 has an intermediate portion that is slidably supported by the guide member 47.
8 is corrected into a linear displacement by this sliding plate 45 and transmitted to each of the wires 31, 41.

Further, the base end of the operating lever 18 is supported by the steering handle 9 via a ball bearing 48,
It is installed so that it can be displaced in any direction. A locking portion 18a is protruded from the middle portion of the operating lever 18, and the wire 46 is fixed to the locking portion 18a, while the upper end of the lever 18 above the locking portion 18a is guided by the operating plate 49. It is supported by the groove 50.

As is clear from the drawing, the guide groove 50 of the operation plate 49 is formed in a hook shape, and the guide groove 50 of the operation plate 49 is formed in a hook shape.
8 is located at point A of the groove 50, each lock pin 3 of the lock device 23 and clutch device 38
2 and clutch hawk 39 are moved by their respective return springs 32a and 39a, and the lock device 23 and clutch device 38 are locked or continuously operated, so that the lock device 23 fixes the swing cases 5, 5, and the clutch device 38 is driven. It is configured to transmit force to the planting claw 13 or the seedling stand 10, and when the operating lever 18 is positioned at point B in the guide groove 50, the lock pin 32 is connected to the connecting elements 46, 45, 31. Also, the clutch hawk 39 is connected to the connecting elements 46, 45, 4 through
1 and 40, respectively, to release or disconnect the aforementioned locking or continuing operation, and the locking device 23
The swing case 5 is swingable around the base end, and the clutch device 38 is formed to cut off power transmission to the planting claws 13 or the seedling stand 10.
Furthermore, when the operating lever 18 is located at the C point position in the guide groove 20, the lock pin 3
2 performs a locking operation to secure the swing cases 5, 5, while the clutch hawk 39 is configured to disconnect the clutch 42 to cut off power transmission to the planting claw 13 or the seedling platform 10. ing.

In other words, the operating lever 18 is
When the lock pin 32 is in the point position, the lock pin 32 locks the lock gear 33 by the return spring 32a, so that the swing cases 5, 5 are locked.
On the other hand, in the planting clutch 42, the clutch hawk 39 is operated to bring it into a disconnected state and cut off the power transmission. In addition, when the operating lever 18 is located at point B of the guide groove 50, the lock pin 32 is connected to the lock gear 3.
3 to release the lock and swing the swing case 5. At the same time, in the planting clutch 42, the amount of movement of the guide groove 50 of the operating lever 18 from point C to point B is absorbed by the spring 40. The cutting state of the planting clutch 42 is continuously maintained.

A return spring 51 is attached to the back side of the operation plate 49 and has one end connected to the operation lever 18.
When the operating lever 18 is in the point position, a larger biasing force is applied to the operating lever 18 in the direction of point C than in the direction of point A, and when the operating lever 18 is released at the point B of the guide groove 50, It is configured to move to point C of the guide groove 50.

This embodiment is constructed as described above. In the state shown in FIG. 1, seedlings are placed on the seedling carrier 10.
When turning during this operation (especially when turning on the pillow ground), the operating lever 18 is switched from point A to point B of the guide groove 50 on the operating plate 49. As a result, the lock pin 32 is released from the lock gear 33 via the connecting elements 46, 45, 31, and the clutch fork 39 is released from the lock gear 33 via the connecting elements 46, 45, 31.
1, 40, the planting clutch 42 is disconnected, and the wheels 4, 4 are supported so as to be freely movable in height relative to the machine body and float 6 via the swing cases 5, 5, and the power transmission to the planting claws and seedling carrier 10 is stopped. When the lock pin 32 is released or the planting clutch 42 is disconnected by the clutch fork 39, the machine is operated so that the machine receives resistance from the ground as the machine body advances. In other words, the machine is operated so that the steering handle 9 is applied with the left hand while pulling the operating lever 18 with the right hand, or the steering handle 9 is operated with the left hand while applying a downward force to the operating lever 18 with the right hand, so that the machine is pressed against the ground. As a result, the float 6 is pressed against the ground, and the float 6 and the machine body are raised against the wheels 4, 4 due to the resistance of the ground against the advance of the machine. At this time, when the hand operating the operating lever 18 is released, the operating lever 18, which was positioned at point B of the guide groove 50, is pulled up by the spring 51.
The force of this force moves the machine to point C in the guide groove 50, and with the planting clutch 42 still in the disengaged state, the locking device 23 is locked to fix the wheels 4, 4 to the machine body and the float 6. In this state, the machine body is turned, and since the machine body and the float 6 are in a higher position relative to the wheels 4, 4 than in the normal working state, the float 6 minimizes mud pushing in the field or headland, etc., and reduces the resistance of the mud acting on the float 6, allowing the machine body to turn easily and quickly.

In addition, after turning, the operation lever 18
is returned from the C point position of the guide groove 50 to the B point position, and the operating lever 18 is maintained at this B point position (that is, when the lock pin 32 is released), the wheels 4, 4 are high relative to the fuselage and the float 6. free)
Then, press the steering handle 9 forward or lift the handle 9 upward to tilt the aircraft so that the engine 1 comes close to the ground, thereby reducing the load on the wheels 4, 4. After that, the operating lever 18 is returned from the point B position of the guide groove 50 to the point A position, and the lock device 23 and the clutch device 38 are respectively locked or continued, and the wheels 4, 4 are moved up and down with respect to the fuselage and the float 6. In other words, the output amount is adjusted as appropriate depending on the depth and shallowness of the field, and the wheels 4, 4 are fixed, and the power is also transmitted to the planting claws 13 and the seedling stand 10, so that the rice transplanter can plant the rice. The seedlings are planted in a constant state while maintaining a good posture and planting the seedlings using the planting claws 13.

"Effects of the Invention" As is clear from the above embodiments, the present invention has the left and right swing cases 5, 5 pivotably supported on the output shaft 35 of the rice transplanting machine, and each of the swing cases 5, 5 In a rice transplanter in which a pair of left and right paddy wheels 4, 4 are attached and a spring 34 for protruding the paddy wheels 4, 4 below the rice transplanting machine body is connected to swing cases 5, 5, the swing has a different axis position from the output shaft 35. An arm fulcrum shaft 19 is provided on the rice transplanting machine body, and a swing lock device 23 for fixedly connecting the swing case 5 to the rice transplanting machine body is attached to the swing arm 2 at the middle part of the swing arm fulcrum shaft 19.
2, 22, and a pair of left and right connecting arms 20, 20 and swing bars 21, 2.
A fixing member 3 that connects both sides of the swing arm fulcrum shaft 19 to the left and right swing cases 5, 5 via the fixing member 3 that is removably engaged with the connecting arm 20.
6 and a lever member 37 for releasing the engagement of the fixing member 36 on the swing bar 21,
The connection length between the connection arm 20 and the swing bar 21 can be changed by engaging and disengaging the fixing member 36 of the lever member 37.The swing arm 22 is attached to the rice transplanting machine at a different position from the swing case 5, and the swing Since the connecting arm 20 and swing bar 21 that connect the case 5 and the swing arm 22 are provided, the force required to support the swing case 5 by supporting the vicinity of the paddy wheel 4 support position of the swing case 5 can be reduced more easily than before. The structure for attaching the swing case 5 to the rice transplanting machine and the support structure for the swing arm 22 can be easily simplified by making the swing arm 22 smaller than before.
The swing lock device 23 can be easily attached via the connecting arm 20, and the level difference between the left and right paddy wheels 4, 4 can be easily adjusted by changing the connecting length of the connecting arm 20 and the swing bar 21. The fixing member 36 and the lever member 37 provided at the connecting portion of the swing bar 21 and the swing bar 21 can be configured simply, and can be handled more safely than before, and the handling operability can be easily improved. It has a certain effect.

[Brief explanation of the drawing]

Fig. 1 is a schematic side view of the rice transplanter according to the present invention, Fig. 2 is a plan view of the same, Fig. 3 is an explanatory side view of the swing device, Fig. 4 is an explanatory plan view of the same, and Fig. 5 is a main part of the rice transplanter. It is a system explanatory diagram. 4...Paddy wheel, 5...Swing case, 19
... Swing arm fulcrum shaft, 20 ... Connection arm, 21 ... Swing bar, 22 ... Swing arm, 23 ... Swing lock device, 34 ... Spring, 35 ... Output shaft, 36 ... Fixed metal (fixed) member), 37... ridge treatment lever (lever member).

Claims (1)

[Scope of utility model registration request] The left and right swing cases 5, 5 are swingably supported on the output shaft 35 of the rice transplanting machine, and a pair of left and right paddy wheels 4, 4 are attached to each swing case 5, 5.
Attach the spring 34 that makes the paddy wheels 4, 4 protrude below the rice transplanting machine body to the swing case 5,
In the rice transplanter connected to 5, the output shaft 35
A swing arm fulcrum shaft 19 having a different axis position is provided on the rice transplanting machine body, and a swing lock device 23 for fixedly connecting the swing case 5 to the rice transplanting machine body is attached to the middle part of the swing arm fulcrum shaft 19 via the swing arms 22, 22. In addition to connecting, a pair of left and right connecting arms 20, 20 and a swing bar 2
1 and 21, the swing arm fulcrum shaft 19
Connect both sides to the left and right swing cases 5, 5,
A fixing member 36 that is detachably engaged with the connecting arm 20 and a lever member 37 that disengages the fixing member 36 are provided on the swing bar 21, and the fixing member 36 of the lever member 37 is disengaged. A rice transplanter characterized in that the length of the connection between the connection arm 20 and the swing bar 21 can be changed by operation.