JPH0143986Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention provides an engine and a transmission case at the front of the aircraft, and a rotary speed change operation shaft that extends linearly from the transmission case toward the rear. Regarding a walk-behind mobile agricultural machine configured to rotate the operating shaft by means of a speed change lever protruding laterally from the extending end of the operating shaft, details include:
This invention relates to an improvement in which the recoil starter of the engine located at the front of the aircraft can be operated from the control section at the rear of the aircraft.

Utility Model Application No. 57-192108 shows a structure in which the starter cord is guided to the control area by utilizing the fact that the gearshift operation shaft extends to the rear of the aircraft. As shown in FIG. 6, the structure is such that a speed change operation shaft 12 whose tip end 12a is interlockingly connected to a speed change operation section 2a of a transmission case 2 is disposed approximately along the longitudinal direction of the aircraft body. By operating the gear shift lever 14 at the rear end of the machine 12, the operating shaft 12 rotates around the operating shaft axis, and the transmission case 2 can be shifted at the tip 12a. Recoil starter 10 attached to the side of engine 1
The starter code 10a is connected to the shift lever 14.
The lever extends to the tip of the lever, and the knob 16 attached to the end of the starter cord is locked to the tip of the lever, and while it has the advantage of being able to start the engine from the operating part, it has the following disadvantages: There was an inconvenience.

In other words, the engine is started by setting the gear shift lever to the neutral position and pulling the knob, but since this operation is done with a fairly strong force, the pulling direction must be parallel to the axis. If the shift lever is not in the neutral position, unnecessary force will be applied to the gear shift lever, causing the shift lever to deviate from the neutral position.Also, in rare cases, the engine may be started with the gear shift lever in a position other than neutral, and in this case, the starter code may be There were cases in which the damage caused by contact with various devices on the aircraft. Furthermore, since the position of the knob deviates during a gear shift operation, there are problems in that the starter cord is twisted and unnecessary force is applied to the starter.

The present invention has been developed in view of the above-mentioned circumstances, and aims to solve the above-mentioned problems and facilitate work while taking advantage of the above-mentioned advantage of being able to operate the recoil starter from the vicinity of the gear shift lever. have a purpose.

A feature of the present invention is that the starter cord extending rearward from the recoil starter of the engine is inserted into a cord receiver provided at the rear end of the gear shift operation shaft, and a knob is attached to the insertion end. Its functions and effects are as follows.

In other words, when starting the engine using the recoil starter, the operating force applied to the recoil starter acts on the gear shift operating shaft in a direction substantially along the axis of the gear shifting operating shaft, so even if an extremely strong force is applied. , the set position of the gear shift lever does not deviate, and the disadvantages of unnecessary force being applied to the recoil starter and the starter cord coming into contact with various devices of the aircraft due to the operation of the gear shift lever are eliminated, and smooth operation is achieved. I am now able to work.

Next, an embodiment of the present invention will be described based on the drawings.

As shown in FIG. 1, an engine 1 is mounted on the front of the aircraft, and a transmission case 2 is placed behind the engine 1, which is interlocked with the engine 1 via a belt.
Further, running wheels 4, 4, which are driven up and down by hydraulic cylinders 3, are arranged on the left and right sides of the machine so that driving force from the transmission case 2 can be transmitted thereto. A transmission case 5 having an inverted "he" shape when viewed from the side extends in a cantilevered manner toward the rear of the transmission case 2. A seedling stand 6 on which W can be placed is tilted backward and movable in the left and right directions,
In addition, a pair of left and right planting frames 7, 7, which are taken out one by one from this pine-shaped seedling W and planted, are used as a seedling stand 6.
It is located at the front of the lower end. Further, the base ends of a pair of left and right handle rods 8 are attached to the rearmost end of the transmission case 5, and one float 9, which is approximately equal to the entire length of the fuselage, is attached to the lower part of the fuselage so that it can swing freely around the rear horizontal axis X. The rice transplanter is attached to a 2-row walking rice transplanter.

As shown in FIGS. 1 and 2, the engine 1 is arranged such that its crankshaft faces in the left-right direction of the aircraft body, and a recoil starter 10 is attached to the right end of the crankshaft. An operating member 2a is provided on the right side of the transmission case 2 at the rear of the engine, and the operating member 2a can be used to change gears by moving in and out. The base end of the speed change operation shaft 12 in a direction substantially along the front-rear direction is this speed change operation shaft 12.
is rotatably mounted, and this shift operation shaft 1
An operating arm 13 is connected and fixed to the base end of 2,
The end of this operating arm is interlockingly connected to the operating member 2a via a long hole at the end of the arm. and,
The speed change operation shaft 12 extends in a straight line to a position slightly in front of the seedling stand 6, and furthermore, a speed change lever 14 is provided toward the side, and the speed change lever 14 can be operated by swinging in the lateral direction. Therefore, the operating member 2a
is operated to move in and out through a speed change operation shaft 12 and an operation arm 13, so that the traveling system output of the transmission case 2 is changed in speed.

Further, a cord receiving member 15 is fixed to the rear end of the speed change operation shaft 12, that is, the base end of the speed change lever 14, and a starter cord 10a extending from the recoil starter 10 is inserted into the cord receiving member 15. It has a structure in which a knob 16 at the insertion end is locked so that it can be inserted and removed. Note that the intermediate portion of the starter cord 10a is guided by a pulley 34 attached to an intermediate stay 33 of the speed change operation shaft 12.
In addition, the speed change operation shaft 12 has a speed change pointer 35 and a stay 3.
3, a speed change display plate 36 is attached to each of them.

This rice transplanter is configured so that the height of the machine body relative to the mud can be adjusted by driving according to the depth of the tiller, and this adjustment is performed using hydraulic pressure according to the depth of the tiller detected by the float 9. By operating the valve 17, the running wheels 4, 4 connected in conjunction with the hydraulic cylinder 3 are activated.
It has the function of automatically raising and lowering the
As shown in Figures 1 and 3, by rotating in the direction of arrow A, the aircraft moves in the upward direction of arrow B.
By rotating in the direction, the aircraft descends.
A hydraulic valve 17 having an operating shaft 17a for operating the hydraulic cylinder 3 is disposed on the side surface of the mission case 2, and a horizontal "T"-shaped swinging arm 18 is fixed to the operating shaft 17a. On the other side, an inverted "L"-shaped swinging arm 19 is rotatably supported. A vertical elongated hole 21 is provided in the rearward extending portion 19a of the outer swinging arm 19 so that a pin 20 protruding from the rearward extending portion 18a of the inner swinging arm 18 can be engaged with the rearward extending portion 19a. is drilled. At the tip of the rear extending portion 19a of the outer swinging arm 19, a rod 22 is connected to the upper surface of the float 9.
is attached so that its vertical motion can be transmitted via a stroke absorbing spring 23, and the float 9 swings vertically around the axis X according to the depth and shallowness of the tiller.
The amount of deviation automatically rotates the operating shaft 17a via the pin 20 that engages with the elongated hole 21. Further, one end of the spring 24 is attached to the downwardly extending portion 18b of the inner swing operating arm 18.
This arm 18 is always locked in the direction of urging in the direction of arrow B, and by operating the other end in the direction of expansion and contraction, the sensor load, which is the standard for automatic operation of the operation shaft 17a, can be adjusted. Settings are now variable. Further, the upwardly extending portion 18c of the inner swing operating arm 18 is interlocked and connected via a wire 25 to a lifting/lowering operating lever 26 of the operating section 8a disposed on the handle rod 8, and the operating lever 26 is operated. This allows the aircraft to be moved up and down manually. Further, the downwardly extending end 19b of the outer swinging operation arm 19 is connected to the wire 2.
7 to the main clutch lever 2 of the operating section 8a.
8, and when the main clutch is disengaged, the wire 27 is tensed and the swinging of the inner swing operating arm 18 is prevented, which prevents the front part of the machine from lowering, which occurs when the vehicle body stops. The configuration is such that the aircraft is not driven up unnecessarily due to false detection.
Further, a spring 24 disposed on the rod 22
is for absorbing extra operating force when the outer swing operating arm 19 is operated and the operating shaft 17a of the hydraulic valve 17 reaches the rotation end, and the elongated hole 21 is This is to prevent the swinging of the inner swinging operating arm 18 from interfering with the outer swinging operating arm 19 when the lifting/lowering operating lever 26 is used to manually drive the aircraft up and down.

Moreover, as shown in FIG. 4, in addition to the wires 25 and 27 described above, wires 29... which are interlocked and connected to each operated part are arranged in a concentrated manner in the operating part 8a. , these wires 25, 27 and 29... are arranged, held and tied in parallel,
A binding tool 30 is provided.

Also, the transmission case 5 to the transmission case 2
was installed at a position where the distance between the left and right planting arms 7, 7 was divided into two, that is, at the center of the machine, but the output shaft 31 of the transmission case 2 was protruded from both sides of the case. When configuring a two-row rice transplanter as in the embodiment of the present invention, a transmission case 5 was installed to obtain driving force from the right protrusion of the output shaft 31, but as shown in FIG. As shown,
When configuring a three-row rice transplanter, the output shaft 31
By attaching a transmission case 32 to which three planting arms 7 are attached so as to obtain driving force from the left protrusion of the rice transplanter, it is possible to configure a rice transplanter with a different number of planting rows. When a three-row rice transplanter is configured, three planting arms 7a, 7b,
The protruding length of the output shaft 31 is set so that the central planting arm 7a among the planting arms 7b is located at the center of the machine body.

[Brief explanation of the drawing]

The drawings show an embodiment of the walking-type mobile agricultural machine according to the present invention, in which Fig. 1 is an overall side view, Fig. 2 is a perspective view showing the arrangement of the speed change operation shaft and starter cord, and Fig. 3 is an automatic operation of the hydraulic valve. Side view showing the structure, No. 4
The figure is a perspective view showing a binding device, FIG. 5 is a schematic plan view showing the arrangement of a transmission case when a three-row rice transplanter is constructed, and FIG. 6 is a schematic side view of a conventional example. 1... Engine, 2... Mission case, 1
0... Recoil starter, 10a... Starter cord, 12... Speed change operation shaft, 15... Cord receiver, 16... Knob.

Claims (1)

[Scope of utility model registration request] Engine 1 and transmission case 2 at the front of the aircraft
At the same time, a rotary speed change operation shaft 12 is linearly extended rearward from the transmission case 2, and a speed change lever 14 protruding laterally from the extending end of the speed change operation shaft 12 is provided with Therefore, the operating shaft 12
In this walk-behind mobile agricultural machine, the starter cord 10a extending rearward from the recoil starter 10 of the engine 1 is inserted into a cord receiver 15 provided at the rear end of the speed change operation shaft 12. The walking type mobile agricultural machine has a knob 16 attached to its insertion end.