JPH08133140A - Running stop device for cultivator - Google Patents

Abstract

PURPOSE: To attain safety by stopping an engine even when tumbled and striking the front side while in a device whereby safety of backward running can be improved by stopping the engine when a cultivator, mainly during its backward running (reverse running), is tilted to the front by reaction force. CONSTITUTION: A movable unit 2 is made swivelable against a fixed unit 1 in a front side of a cultivator. A fixed side rise up part 6 and a movable side rise up part 7 are protrusively provided respectively in the fixed unit 1 and the movable unit 2. At least one of the fixed/movable side rise up parts 6, 7 is formed of flexible material, further to provide in an upper end side respectively of the fixed/movable side rise up parts 6, 7 a fixed/movable side terminal part 8, 9 opposed contactable/separable. Any one of the fixed/movable side terminal parts 8, 9 is grounded to a cultivator main unit, to insulate the other therefrom, further to connect the other to a stop circuit wiring 24 from a generating set 22. A device is formed by normally separating the fixed side terminal part 8 from the movable side terminal part 9.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention stops the engine when the tiller tilts forward due to a reaction force while the vehicle is mainly traveling backward (reverse traveling) by the power of the tiller, thereby ensuring the safety of the backward traveling. The present invention relates to a traveling stop device for a cultivator, which can increase the degree of safety, stop the engine even when the vehicle falls over or hits the front side, and provides safety.

[0002]

2. Description of the Related Art In a field cultivator (equipped with an engine), there is a risk of being in a dangerous state or getting seriously injured when moving backward, especially in fields, paddy fields, etc. was there. Also, the reaction force generated when the cultivator travels backwards causes the body of the cultivator to tilt forward,
A sensor that detects this inclination and stops the engine has also been developed. In addition, at present, in order to reduce the danger due to the reaction force generated when the cultivator travels backwards by power, in particular, regardless of whether the current rotary cultivator is large, medium or small, the tiller type,
It is used in the market with the center of gravity (gravitational force) being extremely rearward. In addition, a safety device for a tiller of Japanese Utility Model Laid-Open No. 62-106882 has been developed.

[0003]

When the vehicle travels backward by the power of the tiller, the tiller blade may be rotating immediately in front of the operator, and if the operator slips or falls over. May damage your body to death with a plowing blade, etc., and may cause death.
In the case of being pressed against stone walls, banks, other obstacles, etc., or in the case of a steep slope at the end of the cultivated land, the bottom of the valley, etc., it may fall with the cultivator in the valley, and if it is notable, it may die, and a fatal accident may occur. It occurs frequently. Therefore, although the above improvements and developments have been made, in the case of back running,
As shown in FIG. 13, the driving wheels may have a low speed, a large torque, and a large reaction force R. When the cultivator tilts forward due to this reaction force R, the center of gravity moves forward, and the cultivating force increases. The operating handle of the machine suddenly lifts and becomes a steep slope. When the operator feels physically unstable and dangerous, he / she desperately tries to lower the operation handle and grasps the handshake part. Therefore, turning off the clutch and turning off the engine switch means
In reality, it is a difficult matter, and even now, accidents are constant.
There is also a wonderful development that made it possible to stop by detecting with a sensor by focusing on such an accident, but the cultivator always has no vibration, and the work site is uneven, The work site is not flat, as some areas are sloping. Since the work is done in such a place, there is a considerable risk that the sensor will not function when it is important.

Further, in the case where the center of gravity is extremely rearward in order to reduce the danger due to the reaction force generated when the tiller travels backward with power, there is no danger when traveling backwards normally. , It is dangerous if there are ridges, obstacles, etc. on the back of the car while traveling backwards.
Usually, since the center of gravity is extremely rearward, when returning, the operator performs forward work by lifting the operation handle, which sometimes causes the operator to be tired in one day. For this reason, the agricultural industry is demanding a vehicle that has a high degree of safety in backward traveling as soon as possible.

The safety device for a tiller disclosed in Japanese Utility Model Laid-Open No. 62-106882 will be described with reference to the same reference numerals.
The support 11 with the rolling wheels 9 tilts when tilted by the reaction force generated during the back running, and the prime mover 2 is stopped by a signal from the detector 13 at that time. However, the most problematic issue is that immediately after stopping the prime mover 2 at that tilt, if the tilt is changed in opposition to the reaction force so as to approach the parallel, the prime mover 2 immediately again. Is suddenly activated. Further, if the rolling wheels 9 dive in a field or the like, the rolling wheels 9 are always stopped and the engine does not start. Further, the support 11 with the rolling wheels 9 in the cultivator of Japanese Utility Model Laid-Open No. 62-106882 does not work, especially in paddy fields where water has accumulated, and does not work with the support 11 with the rolling wheels 9. There was a flaw.

Further, as shown in FIG. 13, when the vehicle is running backward, when the cultivator tilts forward and the engine stopping device is activated, it is a habit of the operator to immediately return the tilt. However, if this is done, the prime mover suddenly becomes operational again, and there is no further danger for workers in a dangerous state, and they cannot be used with peace of mind. In this way, the prime mover of the cultivator is generally a power generator by a non-contact magnet ignition system, and even if it tries to stop the prime mover, even if it does not stop, the flywheel is about 2-3 seconds in inertia. It is rotating and does not stop immediately. That is, if the stop circuit is restored (actually, the short-circuited circuit is restored to the non-short-circuited circuit) within about a few seconds (the stop time varies slightly depending on the load), the prime mover suddenly operates again. This is because it becomes a state.

[0007]

Therefore, as a result of earnest studies to solve the above-mentioned problems, the inventor moved the invention to a fixed body provided at an appropriate position on the front side of the tiller. The body is made swingable, the movable body is positioned substantially at the front end of the cultivator, and the fixed body is provided with a fixed-side rising portion and the movable body is provided with a movable-side rising portion. At least one of the rising portion and the movable-side rising portion is made of a flexible material, and the fixed-side terminal portion and the movable-side terminal portion can be opposed to and separated from the upper ends of the fixed-side rising portion and the movable-side rising portion, respectively. Provided, one of the fixed side terminal portion and the movable side terminal portion is grounded to the cultivator body, the other is insulated from the cultivator body, and the other is connected to the stop circuit wiring from the power generator, Is the runner of the cultivator in which the fixed side terminal portion and the movable side terminal portion are separated from each other. By using a stop device, etc., the engine can be stopped when the cultivator tilts forward, mainly during back travel (reverse travel), to enhance the safety of back travel, and to prevent falling or The engine can be stopped even when hitting the vehicle, and in particular, even if the inclination is slightly changed immediately after the stop is stopped, the engine can be surely stopped and the safety degree of the back running can be improved. Is the solution.

[0008]

[Function] During the backward traveling (backward traveling) of the tiller, the reaction force R of the tiller causes the front side of the tiller to rotate downward and raise the operation handle side. In extreme cases, the operation handle is vertical. Approach the shape. In this way, when the cultivator tilts, the movable body end comes into contact with the ground and operates, and even if there is a slight change in the tilt after the operation, the engine of the cultivator can be reliably stopped.

[0009]

Embodiments of the present invention will be described below with reference to the drawings. A first embodiment of the invention is shown in FIGS. As shown in the overall schematic view of FIG. 1 (a) and the side view of FIG. 1 (b) with a partial cross section of the main part, the stop device A is the main part of the present invention. The first embodiment is an optimum embodiment as an amphibious type. A movable body 2 having an L-shaped cross section is swingably provided to a flat plate-shaped fixed body 1. Specifically, a shaft rod 3b is rotatably inserted into a bearing portion 3a provided on an end side of the fixed body 1, and the shaft rod 3b has a section L directly or through a tubular portion 2a. Corner portions of the shaped movable body 2 are fixed. As a result, the movable body 2 is swingably provided on the fixed body 1 via the tubular portion 2a, the shaft rod 3b, and the bearing portion 3a on a substantially horizontal line.

Further, the shaft rod 3b is moved to the bearing portion 2 for swinging.
There is also a case where the movable body 2 is fixed to the shaft rod 3a, the cylindrical portion 2a is rotatably provided on the shaft rod 3b, and the movable body 2 is fixed to the cylindrical portion 2a. In any case, the movable body 2 is swingably provided with respect to the fixed body 1 and is not limited to the embodiment.

The float portion 4 has closed cells made of foamed synthetic resin and has a large buoyancy in water, and its shape is a substantially arcuate cubic shape with its front upper end bulging. This is also to make it difficult to sink into cultivated land. Specifically, a styrene foam product whose surface is coated with a resin is used. A flexible plate 5 having elasticity such as a leaf spring or a synthetic resin and bending with a small force is interposed between the movable body 2 and the float portion 4 (see FIGS. 1 to 3 etc.). ). The flexible plate 5 is shaped so as to wrap the front side of the float portion 4. The lateral width of the flexible plate 5 (in the direction perpendicular to the paper surface in FIG. 1) is formed to be larger than the lateral width of the floating portion 4 (see the solid line in FIG. 2). Further, the flexible plate 5 may be formed so as to have a large lateral width [two-dot chain line in FIG. 2 and FIG.
(B)]. This is because the flexible plate 5 is
Is to hit the ground (see FIG. 11). The one provided with the floating portion 4 is mainly used in a paddy field where water is accumulated, but is not limited to this, and is also used for cultivated land such as a field.

A fixed-side rising portion 6 is provided on the fixed body 1, and a movable-side rising portion 7 is provided on the movable body 2.
Both are provided so as to face each other. The fixed-side rising portion 6 and the movable-side rising portion 7 are formed in an elongated shape, and at least one of them is configured as a flexible material. As an example thereof, as shown in FIGS. 1 to 3, a movable side rising portion 7 is formed of the same material as the flexible plate 5 so as to be bent by a small force, and is opposed to a fixed side rising portion 6. Is formed of a metal member that does not bend. As a modification, as shown in FIG. 4, the fixed-side rising portion 6 may be made of a flexible material, and the movable-side rising portion 7 may be made of a metal member that does not bend. Furthermore, as a modification, as shown in FIG. 5, both the fixed-side rising portion 6 and the movable-side rising portion 7 may be made of a flexible material.

The fixed side rising portion 6 and the movable side rising portion 7
A fixed-side terminal portion 8 and a movable-side terminal portion 9 are provided facing each other on the upper end side thereof so that they can come into contact with and separate from each other. The fixed-side terminal portion 8 is grounded to the main body of the cultivator through the fixed-side rising portion 6 and the fixed body 1, and the movable-side terminal portion 9 is insulated from the upper end of the movable-side rising portion 7 with a synthetic resin material or the like. It is insulated through the portion 10 [see FIG. 1 (b), FIG. 3 (b), etc.]. Alternatively, the movable-side terminal portion 9 is grounded to the cultivator main body via the movable-side rising portion 7, the movable body 2, and the connection line p. As a modification, the fixed-side terminal portion 8 is the fixed-side rising portion. It may be insulated at the upper end of 7 through an insulating portion 10 such as a synthetic resin material, that is, may be insulated from the cultivator body (see FIG. 4). As described above, one of the fixed side terminal portion 8 and the movable side terminal portion 9 is grounded to the cultivator body, and the other terminal portion is insulated from the cultivator body.

The elastic body 11 is a tension coil spring that pulls the movable side terminal portion 9 provided on the movable body 2 apart from the fixed side terminal portion 8 provided on the fixed body 1. It is elastically provided between the end of the L-shaped piece 12 fixed to the fixed body 1 and the upper end of the L-shaped movable body 2. The tensile force of the elastic body 11 is extremely small, and is for maintaining the space between the movable side terminal portion 9 and the fixed side terminal portion 8.

The opening side stopper piece 13 is the fixed body 1
Is provided at an appropriate position so as to prevent the movable body 2 from opening too much by swinging (see FIG. 2). That is, the presence of the opening-side stopper piece 13 serves to control the opening of the movable body 2 and the movable-side rising portion 7 to the open side. Also, the closing side stopper piece 14
It is provided at an appropriate position on the fixed body 1 so as to prevent the movable body 2 from being closed too much by swinging (FIG. 2).
reference). That is, the presence of the closing-side stopper piece 14 serves to control the close contact of the movable body 2 and the movable-side rising portion 7 with the closed side. Further, a cap-shaped case 15 for covering the upper side of the fixed-side rising portion 6 with the fixed-side terminal portion 8, the movable-side rising portion 7 with the movable-side terminal portion 9, and the like.
Are provided as needed and are fixed to the fixed body 1 [see FIGS. 1 (b) and 3 (a)].

The stationary body 1, the movable body with the floating portion 4, the fixed-side rising portion 6 with the fixed-side terminal portion 8, the movable-side rising portion 7 with the movable-side terminal portion 9, and the like are collectively referred to as a stop device A. The stationary body 1 of the stop device A is a frame 21 on which the engine 20 of the cultivator is mounted, and the engine 20
The movable body 2 is detachably fixed to the front end position of the frame 21 which is located on the front side in the traveling direction, and the movable body 2 is positioned substantially at the front end of the cultivator. Further, the fixed body 1 of the stop device A may be attached to the front end portion of the engine 20.

The power generator 22 of the cultivator is of a non-contact magnet ignition type, and is configured to ignite the fuel of the engine 20 through the ignition wire 23 of this power source while generating power with this. . In addition, a stop circuit wiring 24 (switch circuit line) having an AC power supply (which may be a DC power supply) and having a voltage of several volts is provided from the power generation device 22. A stop switch is generally provided at the other end of the stop circuit wiring 24 for short-circuiting. However, in the present invention, the other end of the stop circuit wiring 24 is insulated from the other terminal portion, that is, insulated. It is connected to the movable side terminal portion 9 or the fixed side terminal portion 8. As a result, when the movable side terminal portion 9 comes into contact with the fixed side terminal portion 8 due to the swing of the movable body 2, the power source of the power generation device 22 is short-circuited and the engine 20 is stopped. Although not shown, the stop switch may be provided in parallel with the stop circuit wiring 24 at an appropriate position on the operation handle 29 or the cultivator body.

The drive from the engine 20 of the cultivator is
The frame 21 via a pulley, a belt, a chain case 25 or a gear, a shaft, a gear, etc. (not shown).
It is interlocked with the lower drive shaft 26. In the case of a small cultivator (see FIG. 1, FIG. 8 to FIG. 10, etc.), the drive shaft 26 has a drive wheel 27 when traveling on the road surface, and has an appropriate rotation phase angle on the outer periphery of the cultivating cylinder 28a when cultivating. Tilling blade 28
A plowing part 28 provided with a plurality of b, 28b, ... Is detachably provided. Further, in the case of a large-sized or medium-sized cultivator (rotary cultivator) (see FIG. 12), the drive wheel 27 and the cultivating part 28 are independent of each other, and the cultivating part 28 is provided at the rear part of the drive wheel 27.

The operation handle 29 is provided obliquely upward and rearward from an appropriate portion of the cultivator. The operation handle 29 is divided into two right and left from one base portion, and there is also one. Alternatively, the two rear parts may be connected to each other. A clutch lever 30 is pivotally supported at the tip of the operation handle 29. When the clutch lever 30 is gripped [raised in FIG. 1 (a)], the drive wheel 27 or the tiller 28 is driven.

The fixed side rising portion 6 and the movable side rising portion 7
In the case where at least one of them is made of a flexible material or the flexible plate 5 is provided, in the field, when the tiller travels backward and is tilted by the reaction force, the floating portion 4 is movable. Body 2
Alternatively, the movable body 2 comes into contact with the ground and the movable body 2 swings, the movable-side terminal portion 9 contacts the fixed-side terminal portion 8, and the power supply circuit of the power generation device 22 is short-circuited to stop the engine 20. this is,
Although it is a dangerous time to run backwards, in general, immediately after that, the operator tries to return it in parallel.
By either one of the movable side rising portion 7 or the flexible plate 5, because of its flexibility, the fixed side terminal portion 8, due to its elasticity,
The movable-side terminal portion 9 functions to maintain the contact state.

Further, as shown in FIG. 7, the flexible plate 5 and the movable side rising portion 7 are made of a material that does not bend, and a cushion material such as sponge is attached to the movable body 2 and the mounting portion. Alternatively, the flexible plate 5 or the movable-side rising portion 7 having flexibility may be formed by interposing a flexible accelerating elastic body 16 which is a compression coil spring. Further, although not shown, a rising protrusion is provided on the fixed body 1 also at the fixed-side rising portion 6, and the flexibility promoting elastic body 16 is provided at a position where the rising protrusion and the fixed-side rising portion 6 are attached.
There is a case where the fixed side rising portion 6 having flexibility is interposed.

A protective cover 17 made of rubber or the like and having a bellows cross section is provided as necessary so as to cover the bottom surface side between the fixed body 1 and the movable body 2 to prevent the movable body 2 from swinging. In some cases (see FIG. 1 (b) and FIG. 4 (a)). Further, the gate-shaped upper side of the gate-shaped guard 18 is arranged at a position slightly retracted from the position where the flexible plate 5 is bent and the float 4 is retracted, so that the frame 21 of the tiller is provided. It is provided at the tip [see the chain line in FIGS. 2 (a) and 3 (a)]. This is to prevent damage due to a collision or the like.

Next, the second embodiment of the present invention will be described with reference to FIG.
It will be described based on. In the second embodiment, the flexible plate 5
The float portion 4 is not provided on the tip side of the.
That is, this is an embodiment in which only the flexible plate 5 is provided on the movable body 2. The front side of the flexible plate 5 is polygonal or curved to the upper side. This is for smoothing the rocking action and making it difficult to sink into cultivated land or the like. The rest of the configuration is the same as that of the first embodiment, so the explanation is omitted. In the second embodiment, the function of the present invention can be sufficiently exerted especially in cultivated land such as land fields, which is a preferred embodiment for the land type.

The third embodiment of the present invention will be described with reference to FIG. In the third embodiment, the floating portion 4 is directly provided on the tip side of the movable body 2. That is, the third embodiment is an example in which the flexible plate 5 does not exist. The rest of the configuration is the same as that of the first embodiment, so the explanation is omitted. In the third embodiment, it is used especially in a paddy field where water is accumulated.

The fourth embodiment of the present invention will be described with reference to FIG. In the fourth embodiment, the movable body 2 alone is used. That is, in this embodiment, the floating portion 4 and the flexible plate 5 are not present on the tip side of the movable body 2. The movable body 2 of the embodiment has a substantially U-shaped cross section, and is formed so as not to sink in cultivated land or the like. The rest of the configuration is the same as that of the first embodiment, so the explanation is omitted. In the fourth embodiment, in particular,
Used for cultivated fields such as fields.

To explain the operation in detail with reference to FIG. 8, the movable body 2 with the floating portion 4 or the tip of the movable body 2 comes into contact with the ground of the field, and the movable side rising portion 7 bends and the movable side terminal portion 9 is bent. Contacts the fixed-side terminal portion 8, which short-circuits the power supply circuit of the power generation device 22 and stops the engine 20. Immediately after that, even if the operation handle 29 is lowered by the angle α in FIG. 8B, the amount of bending of the movable side rising portion 7 is restored, and the movable side terminal portion 9 still has the fixed side terminal portion. The contact state is held at 8. Furthermore, in case in which the flexible plate 5 lowers the operating handle 29 as shown in FIG. 9, the angle theta ₁ between the movable body 2 and the float unit 4 in FIG. 8 (b), the FIG. 9 (b) Movable body 2 and float part 4 in
Even if the angle with is reduced to θ ₂ (operation handle 29
The process of lowering the flexible plate 5 is returned to the old position, and the movable side terminal portion 9 still maintains the contact state with the fixed side terminal portion 8. This surely stops the engine 20. Angle α displacement and angle (θ ₁ − θ
The displacement of ₂ ) does not occur sequentially over time, but changes as a whole.

Such an action serves as a so-called delay relay, and is about a few after the start of the stopping operation of the engine 20.
Seconds can be obtained, which ensures that the tiller is stopped. The reaction force R for inclining the cultivator is generated in this way because the cultivating blade 28b of the cultivating portion 28 bites into the cultivated land and a clockwise biting force is added in the figure, so that the reaction force R of the same magnitude (Fig. This is because the counterclockwise direction occurs at. When traveling backwards on the tiller, the speed is low, the torque is large, and the reaction force R is large. Further, once the cultivator tilts, the center of gravity of the cultivator moves so as to further tilt.

Further, as shown in FIG. 10, in a paddy field in which water is accumulated, when the tiller travels backward and tilts due to the reaction force, the floating portion 4 has buoyancy of water, and Part 4
Floats upward, and thereby the movable body 2 swings, the movable-side terminal portion 9 contacts the fixed-side terminal portion 8, the power supply circuit of the power generator 22 is short-circuited, and the engine 20 starts the stop operation. In this case, as in the case of the field, the operator tries to return in parallel immediately after the back running is dangerous, but either the fixed side rising portion 6, the movable side rising portion 7 or the flexible plate 5 is to be returned. Due to its flexibility, the fixed side terminal portion 8 and the movable side terminal portion 9 have the function of maintaining the contact state by one.
You can get about a few seconds after the start of the stop action of 0,
It is possible to surely stop the engine 20 of the cultivator.

[0029]

According to the first aspect of the invention, the movable body 2 is made swingable with respect to the fixed body 1 provided at an appropriate position on the front side of the cultivator, and the movable body 2 is substantially at the front end of the cultivator. And a movable-side rising portion 7 projecting from the fixed body 1 and a movable-side rising portion 7 protruding from the movable body 2, respectively, and at least one of the fixed-side rising portion 6 and the movable-side rising portion 7 is provided. The fixed-side terminal portion 8 and the movable-side rising portion 7 are provided with a fixed-side terminal portion 8 and a movable-side terminal portion 9 so as to face each other so that they can come in contact with and separate from each other. 8, one of the movable side terminal portions 9 is grounded to the cultivator main body, the other is insulated from the cultivator main body, and the other is connected to the stop circuit wiring 24 from the power generator 22, and is always fixed as described above. The side terminal portion 8 and the movable side terminal portion 9 are separated from each other to form a traveling stop device for a cultivator. As a result, when the cultivator tilts by the reaction force R during the back travel (reverse travel) of the cultivator, the engine 20 can be automatically stopped and the back travel can be stopped. In some cases, even if the cultivator is slightly rocked up and down, it can be stopped surely, and the safety level can be made extremely high. There is an effect such as being able to.

This effect will be described in detail. Since the movable body 2 with the floating portion 4 that operates in contact with the ground is provided at an appropriate position on the front side of the cultivator, when the cultivator travels backward, A reaction force R is generated centering on the tilling portion 28 or the drive wheel 27 provided at the intermediate position. This is quite large for arable land. With this reaction force R, the cultivator is inverted so that the front side of the cultivator is on the lower side, so the movable body 2 with the float portion 4 provided on the front side of the cultivator surely contacts the cultivated land,
As a result, the movable body 2 with the float portion 4 swings, the fixed-side terminal portion 8 and the movable-side terminal portion 9 come into contact with each other, and the stop circuit of the power generation device 22 is short-circuited to automatically stop the engine 20.

Particularly, immediately after the start of the stopping operation of the engine 20, it is a dangerous time, and therefore the operator tries to lower the operation handle 29 in opposition to the reaction force R, and the inclination angle of the cultivator is small. To lower. In such a case, in the present invention, the fixed-side rising portion 6 and the movable-side rising portion 7 are formed in this manner.
Since at least one of them is made of a flexible material, elasticity of the flexible material serves to maintain the contact state between the fixed side terminal portion 8 and the movable side terminal portion 9. This plays the role of a so-called delay relay, which is about a few times after the start of the stop operation of the engine 20.
Seconds can be obtained, which ensures that the tiller is stopped. In the power generation device 22 such as the non-contact magnet ignition system, the fixed side terminal portion 8
This is because when the movable side terminal portion 9 and the movable side terminal portion 9 are momentarily contacted with each other, the inertial force of the flywheel causes a sudden actuation again, which requires about 2 or 3 seconds. Although the present invention has the delay relay mechanism,
The delay relay mechanism is not an electrical one, but a flexible material having a simple structure, and has a great advantage that it can be provided at a low price and high reliability.
This certainty could be proved by an experiment in the back running equipped with the present invention.

According to the invention of claim 2, in claim 1,
In the paddy field where water has accumulated, the traveling device of the cultivator having the movable body 2 provided with the floating portion 4 is provided.
There is an effect that the engine 20 can be stopped by the action of the floating portion 4 against the reaction force R during back running.
Further, in the present invention, since the floating portion 4 is provided at the tip of the movable body 2, even in the paddy field where water is accumulated, even when the reaction force R is generated and the cultivator tilts when the cultivator travels backward, When the float portion 4 comes into contact with the water surface, the movable body 2 swings due to the buoyancy action and becomes similar to the ground surface of a field or the like, the fixed side terminal portion 8 and the movable side terminal portion 9 come into contact, and power generation The stop circuit of the device 22 is short-circuited and the engine 20 automatically stops.
It is an amphibious stop device that can be provided with extremely high safety. In this respect, the conventional technique, SAIKAI Sho 62
-The defect of the safety device of the cultivator No. 106882 is solved.

Next, in the invention of claim 3, in claim 2, the fixed side rising part 6 is provided by using the floating part 4 as a traveling stop device for a cultivator, which is mounted via a flexible plate 5. , The action of at least one of the movable side rising portions 7 and the flexible material synergistically acts, and the elasticity increases the angle at which the fixed side terminal portion 8 and the movable side terminal portion 9 maintain the contact state. It works and can be made more safe.

Next, in the invention of claim 4, in claim 3, the flexible plate 5 is a traveling stop device of the cultivator which is widened in the width direction, so that the cultivator falls to the left and right sideways. In this case, the left or right end of the wide flexible plate 5 contacts the ground [see FIGS. 11 (a) and 11 (b)], and the movable body 2
Of the fixed side terminal portion 8 and the movable side terminal portion 9 are ensured to be in contact with each other, the stop circuit of the power generation device 22 is short-circuited, and the engine 20 can be automatically stopped.
The safety can be improved.

According to the invention of claim 5, in claim 1,
The movable-side terminal portion 9 and the fixed-side terminal are configured by using the traveling stop device of the cultivator that is urged by the elastic body 11 so as to open the gap between the fixed-side terminal portion 8 and the movable-side terminal portion 9. The distance from the portion 8 is maintained, so that the stop device A is not switched even by a slight change in the inclination angle, which also requires the certainty of the stop.

According to the invention of claim 6, in claim 1,
The fixed-side terminal is provided by using the cap-shaped case 15 attached to the fixed body 1 so as to cover the upper portions of the fixed-side rising portion 6 and the movable-side rising portion 7, thereby making the traveling stop device of the cultivator. There is an advantage that the portion between the portion 8 and the movable side terminal portion 9 can be protected.

[Brief description of drawings]

FIG. 1 (a) is a schematic view of a first embodiment of the present invention. FIG. 1 (b) is a side view of an essential part with a partial cross section of (a).

2 (a) and 2 (b) are perspective views of a main part of the first embodiment of the present invention.

FIG. 3 (a) is a side view of a main part as a partial cross section of the first embodiment of the present invention, and FIG. 3 (b) is an enlarged cross sectional view of an insulating part.

FIG. 4A is a side view of a main part of a second embodiment of the present invention, and FIG. 4B is a perspective view of a flexible plate portion.

FIG. 5 is a side view of an essential part of a third embodiment of the present invention.

FIG. 6 is a side view of an essential part of a fourth embodiment of the present invention.

7A is a side view of a main part of another embodiment for forming a flexible material, FIG. 7B is a partial side sectional view showing an operating state of FIG. 7A, and FIG. ) Is a cross-sectional view of the main part of another embodiment

FIG. 8 (a) is a side view showing a state in which the present invention is traveling backward on cultivated land such as a field.

9 (a) is another side view of the present invention in a state of traveling backward on cultivated land such as a field. FIG. 9 (b) is a side view of a main part of FIG. 9 (a).

FIG. 10 (a) is a side view of the present invention in a state of traveling backward in a paddy field, and (b) is a side view of a main part of (a).

FIG. 11 (a) is a front view of a state in which the present invention is laid down sideways. FIG. 11 (b) is a main part state view of (a).

FIG. 12 is a side view of the present invention on a large or medium cultivator.

FIG. 13 is a side view showing a state in which a known cultivator is traveling backwards.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Fixed body 2 ... Movable body 4 ... Float part 5 ... Flexible plate 6 ... Fixed side rising part 7 ... Movable side rising part 8 ... Fixed side terminal part 9 ... Movable side terminal part 11 ... Elastic body 15 ... Case 22 … Power generator 24… Stop circuit wiring

Claims (6)

[Claims] 1. A movable body is made swingable with respect to a fixed body provided at an appropriate position on the front side of the cultivator, and the movable body is positioned substantially at the front end of the cultivator, and the fixed side is fixed to the fixed body. The rising portion, the movable side rising portion is provided on the movable body,
At least one of the fixed-side rising portion and the movable-side rising portion is made of a flexible material, and the fixed-side terminal portion and the movable-side terminal portion are connected to the upper ends of the fixed-side rising portion and the movable-side rising portion so as to face each other. Provided so as to be separable, one of the fixed-side terminal portion and the movable-side terminal portion is grounded to the cultivator body, the other is insulated from the cultivator body, and the other is connected to the stop circuit wiring from the power generator. However, the traveling stop device for a cultivator, wherein the fixed-side terminal portion and the movable-side terminal portion are normally separated from each other. 2. The traveling device for a cultivator according to claim 1, wherein a floating portion is provided at a tip of the movable body. 3. The traveling stopping device for a cultivator according to claim 2, wherein the float portion is attached via a flexible plate. 4. The traveling stop device for a cultivator according to claim 3, wherein the flexible plate is wide in the width direction. 5. The traveling stop device for a cultivator according to claim 1, wherein the stationary side terminal portion and the movable side terminal portion are urged by an elastic body so as to open a space therebetween. 6. The traveling of a cultivator according to claim 1, wherein a cap-shaped case is attached to the fixed body so that upper portions of the fixed-side rising portion and the movable-side rising portion are covered. Stop device.