JPS60751Y2 - Rice transplanter seedling stand - Google Patents

Description

[Detailed description of the invention] This invention relates to a seedling platform that is installed in the planting section and loaded with seedlings to be planted in a rice transplanter that performs rice planting work while traveling in a flooded field. .

That is, this invention attempts to provide a new seedling stand for a rice transplanter, which takes into account the relationship between the two mechanisms attached to the seedling stand.

Regarding the illustrated embodiment, to explain the structure of the seedling stand of the rice transplanter of this invention, as schematically shown in FIG. 1 and a pair of lower left and right lower links 2 connect a support frame F made of pipe material so as to be able to rise and fall,
The planting part P is connected to the gate-shaped upright reframe part 3 at the front end of the support frame F by an upper top link 4 and a lower left and right pair of lower links 5, so that the planting part P can be raised and lowered. This invention is implemented in the following manner in a riding rice transplanter configured to perform rice planting work by driving the machine body in a flooded field while towing the planting part P by the machine T.

That is, the above-mentioned planting part P includes the planting part transmission 6, this planting part transmission 6 as usual.
Each of them is configured to include a seedling stand 7 that can be moved horizontally and reciprocally, a planting arm 8 that can be moved up and down, and a float 9 that supports the planting part P from below. In this case, the seedling stand 7, which is inclined backwardly, is constructed as follows according to this invention.

That is, in one embodiment illustrated in FIGS. 1-6, the second
-4 As shown in Figure 4, the above-mentioned seedling stand 7 has vertical ribs 1
In the seedling loading section of each row divided by 0, the seedling stopper 11 located on the upper side and the seedling succession sensor 12 located on the lower side as seen in the inclined direction of the seedling loading table 7 are connected to each other. It is provided near the lower end.

To explain how to support these seedling stoppers 11 and seedling succession sensors 12, recesses 13 and window holes 14 are provided at appropriate positions in each seedling compartment of the seedling platform 7 in the direction of inclination of the seedling platform 7. The brackets 15 are positioned vertically and partially overlapped in the inclination direction, and the brackets 15 are fixed to the lower surface of the seedling stand 7 at the lower side of the window hole 14 when viewed from the inclination direction of the seedling stand 7. It is equipped.

The bracket 15 is provided with a pair of left and right leg plates 15a that extend below the window hole 14, and is spanned between the leg plates 15a on both sides to be placed below the seedling stand 7 in the left and right direction. A supporting shaft 16 is provided along the axis.

Seedlings 1 to 11 are plate-shaped,
A pair of left and right leg plates 11a are vertically disposed on the lower surface of the support tube 11b, which is fixedly attached to the ends of the leg plate portions 11a.The support tube 11b is rotatably fitted onto the above-mentioned support shaft 16, so that the support tube 11b is rotatably fitted around the support shaft 16. It is rotatably supported by the seedling stand 7.

This seedling stopper 11 has a downwardly bent portion 11c at its free end, and a torque spring 17 wound around a support tube 11b, and a downwardly directed projecting piece 11d in the middle of the base end of the seedling stopper 11. The bent portion 11c is attached to the upper surface of the recess 13 of the seedling stand 7 by the torque spring 17, which is latched at one end and latched at the other end to a downward protrusion 15b formed on the leg plate 15a of the bracket 15. It is rotatably biased in the direction of collapse where it touches near the top end.

In FIG. 2, reference numeral 18 denotes a number of isolated protrusions arranged in a staggered manner on the upper surface of the seedling platform 7 to provide appropriate slip resistance to the seedling mat on the seedling platform 7. , the height of the bent portion 11c of the free end of the seedling stopper 11 is set such that the upper surface of the seedling stopper 11 is aligned with the upper surface level 18L of the convex portion 18 (FIGS. 3-5) when the seedling stopper 11 is in the laid down state. It is set.

This seedling stopper 11 is rotated upward around the support shaft 16 against the torque spring 17 by placing a hand on the inclined upward operating portion 11e provided protruding from the center of the free end. The seedling stopping action is performed by bringing it to the standing position as shown in the figure.

In addition, the seedling transfer sensor 12 is fixed at its base end to a support tube 19 that is rotatably fitted onto the above-mentioned support shaft 16, and extends along the lower surface of the seedling support 7 in the downward direction of the inclination of the seedling support 7. It is configured to include a certain sensor arm 20.

A slit-shaped window hole 21 is formed in the seedling platform 7, through which the free end 20a of the sensor arm 20, which is curved into a mountain shape, can be seen. As shown in FIGS. 3 and 4 at the end portion 20a, a sensor switch 22 is provided on the lower surface of the seedling platform 7, and is turned on when facing above the upper surface of the seedling platform 7.

As shown in FIGS. 4 and 5, this sensor switch 22 is connected to a support plate 1 which is provided to protrude downward from the bracket 15.
When the movable contact member 22a, which is fixedly supported by the switch case 5b and protrudes from the switch case, is pushed in by the displacement of the actuating piece 22b made of a leaf spring on the outer surface of the switch case, it is turned on.

In the middle of the sensor arm 20, as shown in FIG.
The actuating lever 23 is fixedly equipped with the bending actuating portion 23a facing downward from the actuating protrusion 22c at the free end of the actuating piece 22b, and as shown in FIG. 5, the sensor arm 20
When the free end 20a is partially exposed above the upper surface of the seedling stand 7 through the window hole 21, the actuating lever 23 on the arm 20 pushes the actuating protrusion 22c on the free end of the actuating piece 22b to operate the arm. The sensor switch 22 is turned on by displacing the piece 22b in the pushing direction of the movable contact member 22a.

A horizontal mounting rod 24 is fixed to the middle of the sensor arm 20 of the seedling splicing sensor 12, as shown in FIG.
A tension spring 25 is provided with both ends attached to the end of the downward projecting piece 11d of the seedling stopper 11 and the mounting rod 24.

This tension spring 25 rotates the sensor arm 20 around the support shaft 16 so that the free end 20a of the arm 20 faces from the window hole 21 to the upper surface of the seedling stand 7 when the seedling stopper 11 is in the down position. It is energized in the direction of upward rotation.

In the seedling splicing sensor 12, the free end 20a of the sensor arm 20 is pushed by the seedling mat on the seedling stand 7 against the force of the tensile respring 25, and the free end 20a sinks into the window hole 21. When the seedling mat is used up and the end of the seedling mat moves from the state where the seedling mat is near the lower end of the window hole 21,
The force of the tension spring 25 causes the sensor arm free end 20a to protrude upward from the window hole 21 to the upper surface of the seedling stand 7, which turns on the sensor switch 22 as described above, thereby eliminating the need for seedling splicing. Detect the time.

As mentioned above, in particular, the above-mentioned tensile respring 2
The mounting position of No. 5 on the seedling stopper 11 side is such that when the seedling stopper 11 is rotated upward from the laid-down position shown by the solid line in FIG. The axis X of the spring 25 exceeds the axis Y of the support shaft 16, and this tension spring 2
5 is set so that the biasing direction of the spring 25 is changed so as to rotate and bias the sensor arm 20, which is rotatably supported around the support shaft 16, downward.

Therefore, when the seedling stopper 11 is in the action position shown by the chain line, the tension spring 25 whose biasing direction has been changed causes the sensor arm 20 to move as shown by the chain line in FIGS.
The free end portion 20a is brought to a position facing below the seedling platform 7.

For this reason, the sensor switch 22 is maintained in the OFF state when the seedling stopper 11 acts to stop the seedlings.

As shown in FIG. 6, the sensor switch 22 is inserted into a connection circuit between a battery B constituting a power source and a lamp L and a buzzer skin constituting an alarm means.

Therefore, when the seedling succession sensor 12 detects the need for seedling succession by the ON operation of the sensor switch 22, the lamp L lights up and the buzzer BZ sounds to warn of the necessity of seedling succession.

In FIG. 1, reference numeral 27 denotes a preliminary seedling platform provided above the upper surface of the seedling platform 7;
A fulcrum 28a is provided on the bottom side and the top side of the seedling stand 7, respectively.
By means of upper and lower support links 28 and 29 having 28 b, 29 a, and 29 b, the seedling splicing end 27 a is made to face the upper surface of the seedling platform 7 from the preliminary seedling stocking position shown by the solid line in which the preliminary seedling mat is placed and stocked. It is supported by the seedling stand 7 so that it can be lowered to the seedling splicing position shown by the chain line, in which the seedlings are tilted significantly downward.

Further, in FIG. 1, reference numeral 30 denotes a seedling mat holding device that presses down the seedling mat in the lower part of the upper surface of the seedling table 7 to prevent it from turning over.

Furthermore, in FIG. 1, 31 is the rear wheel of this machine T, 32 is a passenger seat of this machine T, 33 is a hydraulic lift arm provided on this machine T, and 34 is a connection of this hydraulic lift arm 33 to the lower link 2. A tie rod 35 is a flexible transmission shaft mechanism that transmits power from the machine T to the planting part P, and 36 is a pair of left and right auxiliary springs stretched between the machine T and the support frame 1 to pull the support frame F upward. 37 is a pair of left and right auxiliary springs stretched between the support frame F and the planting part 1 to support the planting part P by pulling it upward.

As mentioned above, the rice transplanting work using the illustrated riding rice transplanter is carried out as usual by driving the planting part P along with the support frame F in a flooded field while pulling the planting part P along with the support frame F by the machine T. It is done.

During this rice planting work, the seedling mat in any of the rows of the seedling compartment on the seedling platform 7 of the planting section P is placed near the lower end of the slit-shaped window hole 21 of the seedling platform 7. to move up to
When consumed, the sensor arm 20 of the seedling transfer sensor 12 in the seedling loading section of the same row is rotated upward by the force of the tension spring 25 as described above, and the free end 20a of the arm is inserted into the seedling loading section from the window hole 21. Since the upper surface of the table 7 is projected upward, the sensor switch 22 is turned on as described above.

Depending on the ON operation of this sensor switch 22, the sixth
The lamp L shown in the figure lights up and the buzzer BZ sounds to warn of the need for seedling succession.The operator sitting on the passenger seat 32 of this machine T turns around and places the seedling on the seedling stand. 7. Lower the preliminary seedling platform 27 on the upper surface from the preliminary seedling stock position shown by the solid line in FIG. 1 to the seedling splicing position shown by the chain line in FIG. is slid down from the seedling splicing end 27a onto the seedling mounting stand 7, and the desired seedling splicing can be performed.

In addition, when planting seedlings at the edge of a ridge, etc., but not in a specific row, pull up the seedling mat in the seedling section corresponding to the specific row upwards on the slope of the seedling platform 7. , the seedling stopper 11 of the same row seedling loading area is set to the torque spring 1.
The seedling stopper 1 is rotated upward against the force of
1 by bringing the end of the seedling pine into contact with the seedling stopper 11.
By maintaining the body in a standing position, the lower back can perform the necessary seedling-stopping action.

As mentioned above, as mentioned above, the seedling stopper 1
1 from the inoperative position where it lies down to the operative position where it stands up, the axis X of the tension spring 25 whose base end is attached to the seedling stopper 11 crosses the axis Y of the support shaft 16, and the spring 25 sensor arm 2
The 0-turn biasing direction is switched to the opposite direction from when the seedling stopper 11 is not acting.

Therefore, as described above, the sensor arm 20
A downward rotation biasing force acts on the arm 20, and the arm 20 assumes a posture in which the free end 20a faces below the seedling stand 7, as shown by the chain line in Fig. 3.4. Stopper 1
As long as sensor switch 1 is performing the seedling stop function, sensor switch 22 is maintained in the OFF state.

Therefore, when the seedling stopper 11 is activated, the lamp L and the buzzer skin, which serve as warning means, do not operate, and the operator is notified or warned of the lack of seedlings in the seedling compartment of the strip where seedling stop has not been performed. Next, another embodiment shown in FIG. 7.8 will be explained. As shown in FIG. 7, a tension spring 40 that constantly urges the sensor arm 20 in the upward rotational direction is stretched between the arm 20 and the leg plate 15a of the bracket 15.

Further, a switch 41 is provided fixedly supported on the leg plate 15a, and this switch 41 is activated when the seedling stopper 11 is displaced from the lodging non-working position shown by the solid line to the upright working position shown by the chain line. 11, the actuator 41a is pushed in and turned off.

As shown in FIG. 8, this switch 41 is inserted in series with the sensor switch 22 into the telegraph circuit.

Therefore, in this second embodiment, the seedling stopper 11
When this action occurs, the switch 41 is maintained in the OFF state, so that the necessary detection operation of the seedling succession sensor 12 is disabled, and the same action as in the above-described embodiment is distantly related.

As described above, the seedling platform 7 of the rice transplanter of this invention includes a seedling stopper 11 that selectively stops the descent of the seedling mat, an alarm means for detecting the need for seedling splicing, and a seedling splicing sensor 12 that operates the BZ. are connected to each other in such a way that the seedling succession sensor 12 becomes inoperable when the seedling stopper 11 is activated, and as described above, when the seedling stopper is activated, If the warning means does not operate, the operator may be confused about the lack of seedlings in the rows for which seedling stop has not been performed, or suffer from repeated warnings. It has become something that does not exist.

In addition, according to an embodiment of this invention, a seedling succession sensor 1
Reference numeral 2 denotes a sensor arm 20 which is rotatably biased by a spring 25 in a direction facing the upper surface of the seedling table 7, and is rotatable by the biasing force of the spring 25 when the seedling mat is insufficient. The sensor arm 20 of the spring 25 is connected to the seedling stopper 11 by displacement of the spring 25 to the seedling stopper action position.
So that the rotation bias direction can be switched to the opposite direction from the above,
When configuring the seedling stand according to this invention so as to connect, the spring that detects and rotates the sensor arm and the spring that biases the sensor arm to rotate in an undetectable manner are integrated, and the structure is improved. Simplification is achieved.

[Brief explanation of the drawing]

Fig. 1 is a schematic side view of the main parts of a riding rice transplanter equipped with an embodiment of this invention, Fig. 2 is a plan view showing a part of the same embodiment, and Figs. 3 and 4 are respectively the same embodiment. 5 is a sectional view taken along line V-V in FIG. 4, FIG. 6 is a circuit diagram of the electric circuit in the same embodiment, and FIG. 7 is a schematic diagram of another embodiment of this invention. FIG. 8 is a longitudinal cross-sectional side view of the section, and is a circuit diagram of the electric circuit in the embodiment. T...Machine, F...Support frame, P
......Planting section, 7...Seedling stand, 11...
... Seedling stopper, 11a ... Leg plate part, l
lb... Support tube, lld... Downward protruding piece, 12... Seedling splicing sensor, 13...
・Concavity, 14... Window hole, 15... Bracket, 15a... Leg plate, 15b...
Support plate, 16... Support shaft, 17... Torque spring, 19... Support tube, 20...
・Sensor arm, 21...Window hole, 22...
... Sensor switch, 22a ... Movable contact member 22b ... Actuation piece, 23 ... Actuation lever, 24 ... Mounting rod, 25 ... ...
Tension respring, 40... Tension spring, 41... Switch, 41a... Actuator, B... Battery, L... Lamp , BZ...Buzzer.

Claims (1)

[Scope of Claim for Utility Model Registration] l A seedling stopper that selectively stops the descent of the seedling mat and a seedling succession sensor that detects when seedling succession is necessary and activates an alarm means; the seedling succession sensor operates when the seedling stopper is activated. A seedling stand for a rice transplanter, which is characterized in that it is connected so that it is impossible to use. 2. The seedling transfer sensor is a sensor arm that is biased to rotate by a spring in a direction facing the top surface of the seedling platform, and the sensor arm is rotated by the biasing force of the spring when there is a shortage of seedling mats. and the spring is connected to the seedling stopper in such a way that the direction in which the sensor arm is energized by the rotation of the sensor arm of the spring is switched to the opposite direction as described above by displacement of the seedling stopper to the operating position. A seedling stand for a rice transplanter according to claim 1 of the utility model registration claim.