JPH103A - Stand device in power tiller - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a stand device capable of simply and rapidly carrying out the exchange of a driving unit such as a tillage part or a wheel in a power tiller, raising the efficiency of exchange operations and further ensuring the safety of operators. SOLUTION: This stand device in a power tiller is capable of supporting the power tiller on three points with a supporting member B equipped with a supporting rod 6 capable of protruding to the side of a tilted lower position when transversely tilting the power tiller, a front site of the power tiller and a lower lateral site where driving units D attached to a driving shaft 4 of the power tiller are tilted.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention enables easy and quick replacement of a tilling unit or a driving body such as wheels in a cultivator, improves the efficiency of replacement work, and further enhances the safety of workers. The present invention relates to a stand device for a tiller that can be secured.

[0002]

2. Description of the Related Art A general walking type cultivator (mounted on an engine) uses a tilling unit having a plurality of tilling blades or a driving body such as a wheel mounted on a driving shaft. For example, the driving body is provided with a tilling unit when performing a tilling operation, and is mounted with wheels when performing only traveling.
These driving bodies need to be replaced appropriately according to the working situation.

[0003] With regard to the replacement work, generally, first, one side in the left-right direction of the cultivator is lifted, and a cultivator on one side of the cultivator or a driving body such as a wheel is separated from the ground. Then, the driver on the lifted side is removed from the drive shaft, and a desired driver is mounted. At this time, the operator lifts one side of the cultivator with one hand, then removes the driver from the drive shaft with the other free hand, and mounts the desired driver.

Alternatively, as shown in FIG. 13, the cultivator is tilted in the lateral direction (width direction), while one drive unit a is grounded, the other drive unit a is separated from the ground, and the other parts such as an operation handle are connected. The support rod b may be arranged between the ground and the ground, and the tilling machine may be maintained in an inclined state. At this time, the position of the center of gravity G is always present between the two drive units a so that the tilt of the cultivator does not fall in the tilted direction. That is, as shown in FIG. 13, it is necessary to have an interval L in the horizontal direction between the ground point Q _{0 of} any of the drive units a and the center of gravity G.

[0005]

As described above, the replacement operation of the drive unit a in the cultivator is performed because the worker holds the cultivator with one hand and replaces the drive unit a with the other hand. This imposes a burden on the worker due to physical fatigue. Therefore, the operation is extremely troublesome, and the danger associated with the operation is sufficiently involved.

Further, as described above, when the cultivator is inclined in the left-right direction via the support bar b and the drive unit a is replaced, the worker uses both hands to perform the work. However, in a situation where the worker inadvertently hooks a part of the body, such as a limb, on the support rod b,
When the support bar b comes off, the cultivator falls down to the side of the drive unit a to be replaced, that is, the worker side, and the worker falls into a very dangerous state.

[0007]

The inventor of the present invention has conducted intensive studies to solve the above-mentioned problems. As a result, when the tilling machine is tilted sideways, the present invention protrudes to the tilted lower position side. A support member having a possible support rod, a front part of the cultivator, and a lower part where a driver mounted on a drive shaft of the tiller is inclined to support the tiller at three points. With the feature of the stand device for the cultivator, the worker can safely exchange the drive unit and attach / detach the connecting pin when connecting / disconnecting the hitch of the cultivator and the towing body. This has solved the above problem.

[0008]

Embodiments of the present invention will be described below with reference to the drawings. In the present invention, the main body is shown in FIGS.
As shown in FIG. 4, an engine 1 is mounted on a frame 2 and driven by the engine 1 via a drive casing 3 containing a transmission mechanism constituted by pulleys, belts, chains or the like. It is interlocked with the drive shaft 4 at a position lower than 2. An operation handle 5 is mounted on the frame 2.

A drive body D is mounted on the drive shaft 4.
As the driving body D, there are various types, but when traveling on a road surface, wheels 20 are used as shown in FIG. 1, and in a tilling operation, as shown in FIG. The tilling body 21 provided with the blades 21a, 21a,. The operation handle 5 is provided at an upper portion of the drive unit casing 3 and can be set at a desired angle of an operator, and is provided at a desired position so as to be freely fixed in accordance with the height of the operator and work conditions. Therefore, it is possible to set the position most suitable for each worker.

At the rear of the frame 2 of the cultivator, a support member B and a resistance support C are provided. The resistance support C gives resistance to running in the tilling operation of the tilling machine, and makes the tilling of the soil even more efficient. Then, as shown in FIG. 1, the tiller is horizontally moved by the three-point support by the ground point S ₁ of the support rod 6 of the support member B, the ground point Q ₁ ′ of the driving body D, and the ground point T in front of the tiller. It functions as a stand for maintaining a state of being tilted in the direction (width direction). Specifically, the front portion of the cultivator is a corner portion of the frame 2 (see FIGS. 1 and 3B).

There are a plurality of embodiments of the support member B. First, in the first embodiment, a support member B is supported and fixed by a connecting member 15 as shown in FIGS. The connecting member 15
Is composed of a connecting plate portion 15a and a base portion 15b.

The hitch 16 at the rear of the cultivator is connected and fixed to the hitch 16 via a hitch connecting pin 17, and the support member B and the resistance support C are positioned at predetermined positions along the longitudinal direction of the connecting plate 15a of the connecting member 15. Be attached. The hitch connecting pin 17 includes a pin shaft portion 17a and a photographing portion 17b.

The support member B functions as a stand together with the front part of the cultivator and the driving body D. The support member B extends from the rear of the frame 2 of the cultivator in the lateral direction (width direction) of the cultivator, that is, in either the left or right direction. In such a manner as to be able to protrude in the direction of. As a specific shape of the support rod 6 that constitutes the support member B, when the support rod 6 is attached to the rear part of the cultivator, an upper part of the inclined rod part 6 a Horizontal rod 6
b is formed. At the upper end of the support rod 6, a tubular support rod base 7 having a square cross section is provided (see FIGS. 5 and 6).

More specifically, a support rod base 7 is provided at the longitudinal end of the upper horizontal rod 6b. The support rod base 7 is used to mount the support rod 6 to the support rod support 10. Further, a grounding member 8 may be provided at the lower end of the support rod 6 (see FIG. 9). The grounding member 8 has a plate-like shape, and the support rod 6 is particularly adapted to the soft ground by the grounding member 8.
The grounding portion of the support rod 6 can be prevented from digging deep into the ground.

Further, there is a support rod 6 having a structure capable of extending and contracting in the axial direction. This is so that each part of the support rod 6 can expand and contract in the longitudinal direction. Specifically, the upper horizontal rod 6b expands and contracts, or the inclined rod 6a expands and contracts. Specifically, each part is composed of a thick rod and a thin rod, and the thin rod is inserted into the thick rod and slides to adjust the length.
(A), the in tilt rod portions 6a, composed of Futoshi杆6a ₁ and Hoso杆6a ₂ and the fixed pins 6a ₃ Prefecture. Also,
Also in the upper horizontally rod part 6b, Hoso杆6b to Futoshi杆6b _1
2 is inserted, is configured to be slidable in the longitudinal direction of the rod, and is fixed with a bolt at an appropriate position [FIG.
(B)).

[0016] In this Hoso杆6a ₂ are a plurality of through holes are formed, the Futoshi杆6a ₁ are through-holes one formation for securing the pin 6a _3, the through-hole and Hoso杆6a of Futoshi杆6a ₁ and ₂ of appropriate through-holes are aligned, the tilt rod portions 6a can be adjusted to a desired length through said fixing pin 6a _3. The same applies to the upper horizontal rod 6b.

The support rod support member 10 is composed of a fixed support portion 10a having a square cross section or the like and a guide portion 10b having a circular cross section (see FIG. 7A). The guide portion 10b and the fixed support portion 10a are formed integrally and linearly in the axial direction. As the boundary between the fixed support part 10a and the circular section of the guide portion 10b is changed smoothly, the guide inclined surface 10b ₁ is formed.

The support rod base 7 is rotatable in the axial circumferential direction with respect to the guide part 10b of the support rod support member 10, and has a cross section that is identical to the fixed support part 10a. The corners of the rod base 7 and the corners of the fixed support 10a are aligned so that positioning can be easily performed (see FIG. 7A). That is,
The support rod base 7 and the fixed support 10a are 90 °
The support rod 6 connected to the support rod base 7 also projects in the lateral direction either rearward or left or right of the cultivator. 7).

Further, the fixed support portion 10a and the guide portion 10b
The guide inclined surface 10b ₁ formed between the support杆基portion 7 is inserted from the guide portion 10b side, by rotating slightly in the guide portion 10b and the support杆基unit 7, the support杆基7 The support rod base 7 can be fixed to the fixed support portion 10a in the axial circumferential direction by smoothly moving from the guide portion 10b to the fixed support portion 10a.

As shown in FIGS. 6 and 7A, through holes 10c, 10c,... For the positioning tool 9 are formed in the fixed support portion 10a of the support rod support member 10 at predetermined intervals. The support rod base 7 also has a through hole 7a for the positioning tool 9 formed therein. The through hole 7a
The positioning tool 9 is inserted into the support rod base 10 and the support rod 6 so that the support rod base 7 and the support rod 6 can be fixed at a desired height position with respect to the support rod support member 10.

A pin member is used as the positioning tool 9, and the pin member is formed with a through hole for a retaining pin in order to prevent the pin member from coming off. Further, the fixed support portion 10a of the support rod support member 10
The base 15b of the connecting member 15 is provided at the lower portion of the base member. The base portion 15b is formed in a substantially U-shape, and has a structure that can be connected to the hitch 16 at the rear of the cultivator.

When the support rod 6 is not used as a stand, the projecting direction of the support rod 6 is adjusted to the front-back direction of the cultivator. Alternatively, the support rod 6 may be set on the support rod support member 10 so that the inclined rod portion 6a faces upward (see FIG. 2B). Further, the support rod 6 can be removed from the support rod support member 10.

Next, a function as a stand for maintaining the cultivator in a state of being tilted in the lateral direction (width direction) by the three-point support of the handgrip portion 5a of the operating handle 5 and the resistance support C and the driving body D. It describes about doing. That is, both the handshake part 5a of the operating handle 5, and one of the handshake part 5a of 5a ground point S _2, and the ground point P of the resistors support C and ground point to Q ₁ driver D to a three-point support (See FIG. 10).

When the operating handle 5 is used as a stand, it is preferable to set the operating handle 5 at a lower position. And the cultivator is moved in the horizontal direction (width direction)
To make the ground point of the resistance rod 12 immovable, and ground one of the handshake portions 5a of the operation handle 5,
A triangle including the ground points Q ₁ ′, P, and S ₂ is constituted by the ground point S ₂ and the ground point Q ₁ ′ of the driver D (see FIG. 12B).

The resistance support C comprises a resistance rod 12 and a resistance rod support member 13 for supporting the resistance rod 12. The resistance rod 12 is connected to the connection member via the resistance rod support member 13. 15 (see FIGS. 5, 6, etc.). The resistance rod 12 is formed of round steel, a band-shaped metal plate, or the like, and is appropriately bent.
Specifically, the resistance rod 12 is formed in a “<” shape as shown in FIG. Further, the resistance support C may be mounted together with the support member B (see FIGS. 4 and 5).

The resistance rod support member 13 includes a resistance rod fixing portion 13a into which the resistance rod 12 is inserted, and a positioning fixing portion 13a.
b. The resistance rod fixing portion 13a is
The grounding state of the resistance rod 12 is adjusted, and the connecting member 15 connected to the rear portion of the cultivator is fixed at the positioning fixing portion 13b.
Can be slid in the longitudinal direction with respect to the connecting plate portion 15a and fixed at a desired position.

FIG. 9 shows a type in which a support member B and a resistance support C are combined. The support rod base 7 is rotatable with respect to the resistance rod 12 in the axial direction. And a stopper 14 for stopping the rotation of the support rod 6 that rotates together with the support rod base 7 and restricting the rotation range. The stopper portion 14 is formed in a rod shape and penetrates the resistance rod 12 and the resistance rod support member 13 on the resistance support C side in the orthogonal direction and is provided in an immovable state.

The support rod 6 is supported by a support rod base 7.
When the resistance rod 12 rotates in the circumferential direction of the shaft through the support rod 6, the support rod 6 comes into contact with the stopper portion 14 so that further rotation operation cannot be performed and the range of rotation is restricted. It is. The stop position of the support rod 6 by the stopper portion 14 is performed in a state where the support rod 6 projects substantially in the lateral direction of the cultivator.

[0029]

A description will be given of how the cultivator is supported by the support member B and the driving body D in front of the cultivator in a state of being inclined in the width (left / right) direction. First, the state of the driving body D and the resistance support C in a state where the cultivator is normally stopped is shown in FIG.
Shown in Here, the driving body D is the wheel 20. Then, the ground points of the left and right driving bodies D, D are respectively referred to as Q ₁ , Q ₂
When the ground point of the resistance rod 12 is P, the ground points Q ₁ ,
Q ₂ and P form an isosceles triangle, and are stably stopped by three-point support.

Next, the tiller is tilted in the width (left / right) direction,
As shown in FIG. 3 (B), one of the driving bodies D is separated from the ground, and the driving body D on the ground side, the support rod 6, and the front part of the frame 2 of the cultivator are inclined in the left-right direction of the cultivator. Maintain at At this time, the ground point Q ₁ of the driver D on the ground side
Moves to a new ground point Q ₁ ′. This is because the contact point moves due to the width of the wheel 20.

Assuming that the support rod 6 is at the ground point S ₁ , the new three-point support is the ground point Q ₁ ′, P, S ₁ ,
When the tiller is tilted, the center of gravity G of the tiller is at its ground point Q
₁ ′, P, S ₁
Stability can be ensured, and the wheel 20 or the till 2
1 can be performed while securing safety [see FIGS. 2 (A) and 2 (B)].

Next, a description will be given of how the tiller is supported by the resistance supporter C, the driving body D, and the handshake portion 5a of the tiller in an inclined state in the width (left / right) direction. First, FIG. 12A shows a state in which the tiller is supported by both wheels 20, 20 of the driving body D and the resistance support C. Then, the operating handle 5 is set to a lower position with respect to the cultivator, and then the cultivator is tilted in the width (left / right) direction to obtain the cultivator of FIG.
As shown in (B), one driving body D is separated from the ground,
The tilling machine is maintained in an inclined state by the driving body D on the ground side, the resistance rod 12 of the resistance support C, and the lower handshake portion 5a of the operation handle 5.

At this time, the ground point P of the resistance rod 12 does not move, but the ground point Q ₁ of the driver D on the ground side moves to a new ground point Q ₁ ′ as described above, and Ground point S
_{Assuming 2} , the new three-point supports are the ground points Q ₁ ′, P, S ₂
And the cultivator uses the center of gravity G as the ground point Q ₁ ′, P, S
_By locating within the triangle constituted by ₂ , the stability can be secured, and the wheels 20 or the tilling bodies 21 can be attached and detached.
Work such as replacement can be performed while ensuring safety (see FIGS. 11A and 11B).

[0034]

According to the first aspect of the present invention, when the cultivator is tilted sideways, the support rod 6 can protrude to the tilted lower position side.
A support member B comprising: a front part of the cultivator;
By providing a stand device in a cultivator in which the cultivator is supported at three points by a lower portion where a driving body D attached to the drive shaft 4 of the cultivator is tilted, particularly a wheel or a cultivator of the cultivator And the like, the replacement operation of the driving body D can be performed easily and quickly, and the safety of the operation can be improved.

Conventionally, in order to replace the driving body D of the cultivator with a desired one according to the working condition, the cultivator is arbitrarily inclined in the lateral direction (width direction) in a stable state. I couldn't maintain it. Regarding this point, in the present invention, except that the support member B is mounted on the tiller,
A support member B having a support rod 6 that allows the cultivator to protrude to a lower position side tilted in a lateral direction (width direction) only at a position in front of the driving body D and the cultivator without any other attachment. It is only provided, and can support the cultivator at three points, and can be provided as an extremely stable working stand.

Further, the invention of claim 2 provides a cultivator in which a driving body D mounted on a drive shaft 4, a support member B provided with a support rod 6 capable of projecting in a lateral direction of the cultivator, and a cultivator. By using a stand device in a cultivator that supports the cultivator at three points in front and at the same time, it is possible to easily and quickly replace the driving body D on the side opposite to the ground side of the cultivator, and Safety during work can be improved.

The effect is described in detail. The cultivator supports the cultivator in a state where the cultivator is inclined in a lateral direction (width direction) by a front portion thereof, a driving body D, and a support member B.
This is for mounting work. When the cultivator is tilted, three-point support can be obtained only by the front portion of the cultivator, the driving body D, and the support member B, whereby a stable stand can be obtained.

Since only the support member B is mounted on the cultivator in advance, there is no need to carry another support tool or the like as in the prior art. Then, a stable inclined state in the lateral direction (width direction) of the cultivator can be obtained only with the front portion of the cultivator and the driving body D without newly mounting members other than the support member B, The workers
Since both hands can be used for work, safety can be ensured and work efficiency is improved.

Next, according to a third aspect of the present invention, when the tiller is tilted sideways, the resistance support C provided at the rear of the tiller and the driver D mounted on the drive shaft 4 of the tiller are tilted. The lower part of the cultivator and the handgrip 5a on the lower side of the operating handle 5 projecting rearward of the cultivator constitute a stand device for the cultivator that supports the cultivator at three points. Alternatively, the replacement work of the driving body D such as a tilling part can be performed easily and quickly, and the safety of the work can be improved.

As described above, conventionally, the cultivator is arbitrarily inclined in the lateral direction (width direction) in order to replace the driving body D of the cultivator with a desired one according to the working situation. It was difficult. According to the present invention, the cultivator can be supported at three points in a state where the cultivator is inclined in the lateral direction (width direction) by the handgrip portion 5a of the operation handle 5, the resistance support member C, and the driving member D. Can be provided as a stand.

Next, a fourth aspect of the present invention relates to a tilling machine, comprising: a resistance support C provided at a rear portion of the cultivator; and a lower portion where a driving body D mounted on a driving shaft 4 of the cultivator is inclined. The cultivator has a stand device in a cultivator that supports the cultivator at three points with a lower handshake portion 5a when the cultivator of the operation handle 5 that projects rearward of the cultivator is tilted in the lateral direction. The replacement operation of the driving body D of the machine can be performed easily and quickly, and the safety during the operation can be further improved.

The effect is described in detail. The tilling cultivator is constructed by the handgrip 5a located on the lower side when the resistance support C, the driving body D and the cultivator are inclined in the lateral direction (width direction). Is supported in an inclined state in the lateral direction (width direction), and the replacement and mounting of the driving body D on the side opposite to the ground side is performed. When the tiller is tilted, the driving body D and the resistance support C
In addition, three-point support can be obtained only by the handshake portion 5a of the operation handle 5, whereby a stable stand can be obtained.

Since the driving body D, the resistance support C, the handgrip 5a of the operation handle 5 and the like are only those previously mounted on the cultivator, special supports or the like may be mounted as in the prior art. It is not necessary to carry around, and a stable inclined state in the lateral direction (width direction) of the cultivator can be obtained only with the front part of the cultivator and the driving body D, and the worker can use both hands for work. As a result, safety can be ensured and work efficiency is improved.

[Brief description of the drawings]

FIG. 1 is a perspective view of a state in which a cultivator is tilted in a width direction and supported at three points at a position in front of a support member, a driving body, and a cultivator as viewed from a rear portion of the cultivator.

FIG. 2 (A) is an operation view in which the tilling machine is tilted in the width direction and supported at three points in front of the support member, the driving body (wheel) and the cultivator as viewed from the rear of the cultivator (B) ) Is a view of the rear view of the tilling machine when the cultivator is tilted in the width direction and three points are supported at the front of the cultivator and the support member, drive unit (tiling machine).

FIG. 3 (A) is a schematic view showing a state where three points are supported by left and right driving bodies and a resistance support body. FIG. 3 (B) is a state where it is supported by a support member, a driving body and a front part of a cultivator. Schematic diagram showing

FIG. 4A is a side view of a cultivator equipped with a support member and a resistance support, and FIG. 4B is a main part side view showing a mounting state of a support rod during traveling.

FIG. 5 is a perspective view showing a state in which a support member and a resistance support are mounted on a connecting member.

FIG. 6 is a partial cross-sectional side view showing a state where a support member and a resistance support are attached to a connecting member.

7A is a perspective view showing a support rod, a support rod base, and a support rod support. FIG. 7B is a partial cross-sectional view of the support rod support, the support rod base, and the support rod as viewed from above. Plan view

FIG. 8A is a partially sectional side view showing an axial expansion and contraction structure of an upper horizontal rod portion and an inclined rod portion of the support rod. FIG. 8B is an axial direction of the upper horizontal rod portion of the support rod. Side view with partial cross section showing the telescopic structure

FIG. 9 is a perspective view showing another form of the support member and the resistance support.

FIG. 10 is a perspective view of a state in which the tiller is tilted in the width direction and is supported at three points by a handshake portion of a resistance support, a driving body and an operation handle as viewed from the rear of the tiller.

FIG. 11 (A) is a view showing the state in which the tiller is tilted in the width direction and is supported at three points by the resistance support, the driving body (wheel) and one of the handgrips of the operation handle as viewed from the rear of the tiller. Fig. (B) is an operation diagram of the tilling machine tilted in the width direction and three points supported by the resistance support, the driving body (the cultivating body), and one of the handgrips of the operation handle, as viewed from the rear of the cultivator.

FIG. 12A is a schematic diagram showing a state in which three points are supported by a left and right driving body and a resistance support. FIG. 12B is a schematic view showing a state in which one handshake portion of the resistance support, the driving body and the operation handle is used. Schematic diagram showing the state

FIG. 13 is a schematic diagram showing a state in which a tiller is inclined in a width direction according to a conventional technique.

[Explanation of symbols]

 B ... Support member C ... Resistance support member 4 ... Drive shaft 5 ... Operation handle 5a ... Handshaking part 6 ... Support rod D ... Drive member

Claims (4)

[Claims] When the tilling machine is tilted sideways, the cultivator is mounted on a support member having a support rod that can protrude downward in a tilted position, a front portion of the cultivator, and a drive shaft of the cultivator. A stand device for a tilling machine, wherein the tilling machine is supported at three points by a lower portion where a driving body is inclined. 2. A three-point support for a cultivator, comprising a driving body mounted on a drive shaft, a support member having a support rod protruding in a lateral direction of the cultivator, and a front part of the cultivator. A stand device for a cultivator, comprising: 3. When the tiller is tilted sideways, a resistance support provided at a rear portion of the tiller, a lower portion where a driver mounted on a drive shaft of the tiller is tilted, and a rearward projecting tiller. A stand device for a cultivator, characterized in that the cultivator is supported at three points by a shaking hand portion on the lower side of the operation handle. 4. A cultivator, comprising: a resistance support provided at a rear portion of the cultivator; a lower portion where a driving body mounted on a drive shaft of the cultivator is inclined; and a cultivator having an operation handle protruding rearward of the cultivator. A stand device for a cultivator, characterized in that the cultivator is supported at three points by a handshake portion on the lower side when the cultivator is inclined laterally.