JP7361374B2 - work equipment - Google Patents

Description

The present invention relates to a working machine used for agricultural work. In particular, the present invention relates to a foldable working machine having a working body provided at the center of the working machine and side working bodies rotatably connected to the central working body.

2. Description of the Related Art Foldable working machines, such as plowing machines that are connected to tractors, are known as working machines for agricultural work. Foldable working machines are capable of cultivating a wide range of fields by unfolding the left and right working parts when working, and are suitable for movement (transportation) and storage by folding the left and right working parts when not working. It is possible to make the size larger. Folding machines are required to be suitable for transportation and storage.

As foldable working machines suitable for transportation and storage, for example, the folding working machines described in Patent Document 1 and Patent Document 2 are known. The foldable working machines described in Patent Document 1 and Patent Document 2 have a structure in which working bodies provided on the left and right sides of a working body provided at the center of the working machine are folded.

Patent No. 4634951 Patent No. 5813669

For example, in order to efficiently cultivate a wide field, foldable working machines tend to become larger. However, if the configuration described in Patent Document 1 and Patent Document 2 is adopted in a large-sized foldable work machine, the work body provided in the center part or the work body provided in the center part Since the original size of the work bodies provided on the left and right sides of the machine increases, there is a problem that even if the work machine is folded, it becomes taller in the vertical direction. Furthermore, even if the working machine is folded, there is a problem in that the width tends to be larger than that of a tractor. In addition, with the deregulation in recent years, by installing safety parts that meet certain requirements, it has become possible to drive on public roads with the work equipment attached to the tractor. Having a structure suitable for transportation and storage is also becoming important in order to allow the tractor to run on public roads with the work equipment attached to it.

SUMMARY OF THE INVENTION An object of the present invention is to provide a foldable working machine having a configuration suitable for transportation and storage.

A working machine according to an embodiment of the present invention has a support member having a left end and a right end, and a left connecting part, and is rotatable about a first left rotation axis with respect to the left end. a first left-hand work body supported by the first left-hand work body; and a second left-hand work body rotatably supported by the left-hand connecting portion about a second left-hand rotation axis and configured to be rotatable with respect to the first left-hand work body. a first right side work body having a right side connecting portion and rotatably supported with respect to the right side end portion about a first right side rotation axis; and a right side connection about a second right side rotation axis. a second right side work body rotatably supported by the second right side work body and configured to be rotatable with respect to the first right side work body.

In a rear view of the unfolded state in which the first left side work body, the second left side work body, the first right side work body, and the second right side work body are lined up in a substantially straight line in the left-right direction to achieve the maximum plowing width, The first left-hand work body can rotate approximately 90 degrees clockwise about the first left-hand rotation axis with respect to the support member, and the second left-hand work body can rotate approximately 90 degrees clockwise about the second left-hand rotation axis. The first right side work body can rotate approximately 180 degrees clockwise with respect to the first left side working body, and the first right side work body can rotate approximately 90 degrees counterclockwise with respect to the support member around the first right side rotation axis. The second right side work body may be rotatable approximately 180 degrees counterclockwise about the second right side rotation axis with respect to the first right side work body.

In the unfolded state, the first surface including the line connecting the first left rotation axis and the first right rotation axis is the second surface including the line connecting the second left rotation axis and the second right rotation axis. are substantially parallel surfaces, and do not have to be the same surface.

The first surface may be configured to be at a higher position than the second surface.

In the unfolded state, the first left side work body, the second left side work body, the first right side work body, and the second right side work body are lined up, and in the side view of the unfolded state, the first left rotation axis and the second right side work body are aligned. The first surface including the right rotation axis may intersect with the second surface.

In rear view, the second left side work body is rotated approximately 180 degrees clockwise with respect to the first left side work body, the second left side work body is superimposed on the first left side work body, and the second right side work body is rotated approximately 180 degrees clockwise relative to the first left side work body. The first right side work body is rotated approximately 180 degrees counterclockwise relative to the first right side work body, the second right side work body is superimposed on the first right side work body, and the first left side work body is rotated about the first left side rotation axis. While the first right side work body is rotated approximately 90 degrees clockwise relative to the support member and rotated approximately 90 degrees counterclockwise relative to the support member around the first right rotation axis, the work is performed. The overall width of the aircraft may be less than or equal to half the width in the deployed state.

The second surface may be configured to become lower toward the rear with respect to the first surface.

According to the present invention, it is possible to provide a foldable working machine having a configuration suitable for transportation and storage.

FIG. 2 is a rear view of a working machine according to an embodiment of the present invention connected to a traveling machine body, seen from the rear. (A) is a left side view showing the structure of a working machine in an embodiment of the present invention, and (B) is a perspective view of the structure of the working machine seen from diagonally above and to the front left. (A) is a left side view showing the configuration of the second left side working body and the second right side working body of the working machine in an embodiment of the present invention in a folded state, and (B) is a left side view showing the configuration of the working machine in the state of (A). FIG. 3C is a front view of the state shown in FIG. 2A as seen from the front, and FIG. (A) shows a state in which the second left side work body and the second right side work body of the working machine in one embodiment of the present invention are folded, and then a state in which the first left side work body and the first right side work body are folded. It is a left side view showing the configuration, (B) is a front view of the state in (A) seen from the front, and (C) is a perspective view of the state in (A) seen from diagonally above the front left. be. (A) is a left side view showing the structure of a working machine in an embodiment of the present invention, and (B) is a perspective view of the structure of the working machine seen from diagonally above and to the front left. (A) is a left side view showing the configuration of the second left side working body and the second right side working body of the working machine in an embodiment of the present invention in a folded state, and (B) is a left side view showing the configuration of the working machine in the state of (A). FIG. 3C is a front view of the state shown in FIG. 2A as seen from the front, and FIG. (A) shows a state in which the second left side work body and the second right side work body of the working machine in one embodiment of the present invention are folded, and then a state in which the first left side work body and the first right side work body are folded. It is a left side view showing the configuration, (B) is a front view of the state in (A) seen from the front, and (C) is a perspective view of the state in (A) seen from diagonally above the front left. be.

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of a working machine of the present invention will be described with reference to the drawings. However, the working machine of the present invention can be implemented in many different embodiments, and should not be interpreted as being limited to the contents described in the examples shown below. The work machine in an embodiment of the present invention may be, for example, a folding rotary work machine, a folding type plow scraper, a work machine having a disk, or a work machine having a basket roller. It may be. The working machine in an embodiment of the present invention may be any working machine as long as it is foldable and has a configuration suitable for transportation and storage.

Note that in the drawings referred to in this embodiment, the same parts or parts having similar functions are denoted by the same or similar symbols, and repeated description thereof may be omitted. For example, when the working machine of the present invention is composed of a left-hand working body and a right-hand working body, "L" and "R" are added after the numbers to indicate that the parts belong to the respective working bodies. Sometimes. In addition, in order to make the explanation more clear, the drawings may schematically represent the configuration of each part compared to the actual aspect, but this is only an example and does not limit the interpretation of the present invention. .

In the specification and claims of the present application (hereinafter referred to as "this specification, etc."), "above" indicates a direction vertically away from the field, and "bottom" indicates a direction vertically approaching the field. Further, "front" indicates the direction in which the traveling machine body is located with respect to the working machine, and "rear" indicates the direction 180 degrees opposite to the front. Further, "left" indicates the left when facing the direction in which the traveling body is located with the working machine as a reference, and "right" indicates the direction 180 degrees opposite to the left. Furthermore, when the center line (line parallel to the traveling direction) of the working machine in plan view is used as a reference, the side relatively close to the center line is called the "inside", and the side relatively far from the center is called the "outside".

<1. First embodiment>
As a working machine according to an embodiment of the present invention, the configuration of a foldable rotary working machine 100 having a configuration suitable for transportation and storage will be described with reference to FIGS. 1 to 4. Note that the configurations shown in FIGS. 1 to 4 are merely examples, and the present invention is not limited to the configurations shown in these drawings. In the following, the foldable rotary working machine 100 will be referred to as a rotary working machine 100.

<1-1. Configuration of rotary work machine 100>
As shown in FIGS. 1 and 2, the rotary work machine 100 of the present embodiment includes a support member 20 and a work body, and the work bodies include a first left work body 100L, a second left work body 101L, and a second left work body 101L. The structure is divided into four parts: a first right side work body 100R and a second right side work body 101R. The first left side work body 100L and the second left side work body 101L, and the first right side work body 100R and the second right side work body 101R are symmetrical or approximately symmetrical about the widthwise (approximately) center of the rotary work machine 100. The first left side work body 100L and the first right side work body 100R are arranged symmetrically in the center of the rotary work machine 100.

The second left side work body 101L is vertically rotatably connected to the left end of the first left side work body 100L, that is, the end opposite to the side where the first right side work body 100R is provided. Similarly, the second right side work body 101R is vertically rotatably connected to the right end of the first right side work body 100R, that is, the end opposite to the side where the first left side work body 100L is provided. ing. Although the details will be described later, the rotary work machine 100 rotates the second left work body 101L toward the center of the rotary work machine 100 about the second left rotation axis 104L, thereby rotating the second left work body 101L toward the center of the rotary work machine 100. 101L can be stacked and folded above the first left side work body 100L, and the second right side work body 101R can be rotated toward the center of the rotary work machine 100 around the second right rotation axis 104R. This allows the second right side work body 101R to be folded over the first right side work body 100R (see FIG. 3). Further, the rotary working machine 100 can be rotated in the direction opposite to the direction in which the second left working body 101L and the second right working body 101R are folded, that is, toward the outside of the rotary working machine 100, as shown in FIGS. 1 and 2. It can be expanded as shown in (B).

Further, as will be described later, in the rotary work machine 100, the second left side work body 101L and the second right side work body 101R are folded above the first left side work body 100L and the first right side work body 100R. , the first left side work body 100L is rotated 90 degrees upward relative to the support member 20 about the first left side rotation axis 102L, and the first right side work body 100R is rotated about the first right side rotation axis 102R. By rotating 90 degrees upward with respect to the support member 20, the second left side work body 101L and the second right side work body 101R can be folded so as to face each other (see FIG. 4), making the work bodies more compact. It can be folded into.

In this specification and the like, for example, the first left side work body 100L, the second left side work body 101L, the first right side work body 100R, and the second right side work body 101R are arranged substantially in a straight line in the left-right direction so as to have the maximum plowing width. This state is called the expanded state. Further, in this specification and the like, a state in which the second left side work body 101L and the second right side work body 101R are folded over the first left side work body 100L and the first right side work body 100R is referred to as a first folded state, From the first folded state, the first left side work body 100L and the first right side work body 100R are further rotated 90 degrees upward relative to the support member 20, and the second left side work body 101L and the second right side work body 101R are rotated upward by 90 degrees with respect to the support member 20. The state in which they are folded so that they face each other is called the second folded state. Further, the first left side work body 100L and the second left side work body 101L may be collectively referred to as a left side work body, and the first right side work body 100R and second right side work body 101R may be collectively referred to as a right side work body. The state in which both the left side work body and the right side work body are in the second folded state is called a stored state. In the unfolded state, the total width of the rotary work machine 100 is W1 (FIG. 1 or FIG. 2(B)), and in the first folded state, the total width of the rotary work machine 100 is W2 (FIG. 3(B)). In the two-folded state or the stored state, the total width of the rotary working machine 100 is W3 (FIG. 4(B)).

The unfolded state is a state in which the work body is spread out in a direction perpendicular to the traveling direction of the traveling machine body 200 (that is, the width direction or the left-right direction of the rotary work machine 100). In the first folded state and the stored state, the width of the work body is narrowed in the width direction of the rotary work machine 100. The rotary work machine 100 can perform rotary work, for example, in the unfolded state or in a state in which at least one of the second left side work body 101L and the second right side work body 101R is in the first folded state. On the other hand, when transported by truck or the like or when storing the work equipment, it is stored in a retracted state. The length of the rotary working machine 100 in the stored state in the width direction is preferably such that the rotary working machine 100 can be run on a public road while the rotary working machine 100 is attached to the traveling body 200.

As shown in FIGS. 1 and 2(A), in the rotary working machine 100 in the unfolded state, the first left rotation shaft 102L and the first right rotation shaft 102R are configured to be at the same height. The second left rotation shaft 104L and the second right rotation shaft 104R are configured to have the same height, although the height positions are different from those of the first left rotation shaft 102L and the first right rotation shaft 102R. There is. Therefore, the first surface 108 including the first left rotation axis 102L and the first right rotation axis 102R is substantially parallel to the second surface 106 including the second left rotation axis 104L and the second right rotation axis 104R. (horizontal) surface and not the same surface.

In this case, the height positions of the rotation shafts (second left rotation shaft 104L and second right rotation shaft 104R) located on the outside of the work body are different from the height positions of the rotation shafts (first left rotation shaft 104R) located on the inside of the work body. It is preferable to configure the height position to be lower than the height position of the rotation shaft 102L and the first right rotation shaft 102R. That is, in the rotary work machine 100 according to an embodiment of the present invention, the connecting portions of the left work body or the right work body that overlap each other are arranged so that the vertical interval between them is as narrow as possible when in the first folded state. The height of the structure is also low. As a result, in the stored state, the thickness caused by the height of the connecting part can be suppressed, and the height positions of the outer rotation shafts (104L, 104R) and the inner rotation shafts (102L, 102R) are the same. Compared to the case where the first left side work body 100L and the first right side work body 100R are arranged close to each other, the width of the work bodies in the stored state can be made compact (see FIG. 4(B)). .

Next, the support member 20 will be explained. As shown in FIGS. 1 and 2(B), the support member 20 is arranged above the first left side work body 100L and the first right side work body 100R. The support member 20 is arranged at or approximately the center of the input shaft 18 to which power is transmitted from the traveling body 200 and the rotary working machine 100, and has the role of transmitting the power transmitted from the traveling body 200 to each work body. It includes a gear box 22 and a support frame 24 extending from the gear box 22 in the left-right direction and supporting the work body. The support frame 24 has a left end portion 24L that rotatably supports the first left side work body 100L, and a right side end portion 24R that rotatably supports the first right side work body 100R.

Further, although illustration and detailed description are omitted, for example, the support member 20 includes a mounting portion provided at the front near the center of the rotary work machine 100. The mounting portion includes a top mast that functions as a connection portion with a traveling vehicle such as a tractor, and lower link connection portions provided at two locations on the left and right sides. By connecting the mounting portion to the three-point link hitch mechanism of the traveling machine body 200, the rotary working machine 100 is mounted on the rear part of the traveling machine body 200 so as to be movable up and down. Note that the rotary working machine 100 and the traveling body 200 may be connected via an auto hitch frame attached to the three-point link hitch mechanism of the traveling body 200.

Further, although detailed description is omitted, the support frame 24 includes a central frame extending from the input shaft 18 and having a left central frame including a left end 24L and a right central frame including a right end 24R, and two side frames. It is made up of. A transmission shaft (not shown) that transmits power from the gear box 22 is inserted into the support frame 24 . The transmission shaft is divided into a central shaft that is inserted through the central frame and a side shaft that is inserted through the side frames, and the central shaft and the side shafts are configured to be connectable via a clutch. . A left chain drive section (not shown) is provided at the left end of the first left side work body 100L. The left chain drive section includes a chain and a sprocket housed in a chain case, and transmits power from a transmission shaft (side shaft) to a tilling rotor 30, which will be described later.

Next, the first left side work body 100L will be explained. As shown in FIGS. 1 and 2(B), the first left side work body 100L includes a left central tilling rotor 30LC, a first left side shield cover 14L, a left end connecting portion 26L, a first left side connecting portion 28L, and A first left leveling body 10L is provided. The left center tilling rotor 30LC is attached to the claw shaft via a claw shaft (not shown) which is connected to the left chain drive unit and rotatably supported, and a mounting means such as a flange or a holder (not shown). It has a plurality of tilling claws. The power input from the traveling body 200 is shifted in the gear box 22, and then transmitted to the pawl shaft in the order of the transmission shaft (central shaft, side shafts connected to the central shaft with clutches), the chain drive section, and the pawl shaft. Rotate the axis. As a result, the plurality of tilling claws arranged around the claw shaft rotate in unison, and the tilling work is performed on the field.

The first left shield cover 14L is arranged to cover the upper part of the left center tilling rotor 30LC. The first left shield cover 14L has a role of preventing the soil rolled up by the left center tilling rotor 30LC from scattering upward. As shown in FIGS. 1 and 2, the upper surface of the first left shield cover 14L includes a left end connecting portion 26L rotatably supported by the left end 24L of the support member 20, and a second left side work body 101L. A first left connecting portion 28L is provided to rotatably support the first left connecting portion 28L. The left end connecting portion 26L is composed of a pair (two) of plate-like members that are erected on the first left shield cover 14L, and the left end portion 24L is arranged so as to be sandwiched between them. A through hole (not shown) is provided in the left end portion 24L and the left end connecting portion 26L to connect them, and by inserting a bolt into this through hole and fixing it with a nut, the left end portion 24L and the left end connecting portion 26L are A left end connecting portion 26L is rotatably supported by the portion 24L. In this case, the bolt acts as a rotation axis, and the center of the bolt coincides with the first left rotation axis 102L. In addition, in order to secure a space for attaching and detaching the clutch that connects the central shaft and the side shafts, the through holes formed in the left end portion 24L and the left end connecting portion 26L are located at a position higher than the upper end surface of the transmission shaft to be inserted. is formed.

The first left side earth leveling body 10L is arranged behind the left center tilling rotor 30LC, and is rotatably connected to the first left side shield cover 14L. The first left leveling body 10L has the role of preventing the soil rolled up by the tilling rotor 30 from scattering backward, and also has the role of a leveling member for leveling the field.

Next, the second left side work body 101L will be explained. As shown in FIGS. 1 and 2(B), the second left side work body 101L includes a second left side shield cover 16L, a left end tilling rotor 30LE provided below the second left side shield cover 16L, and a second left side connecting portion. 32L, and a second left leveling body 12L. The configuration of the left end tilling rotor 30LE is approximately the same as the configuration of the left center tilling rotor 30LC described above, but the claw shaft of the left end tilling rotor 30LE is configured to be connectable to the claw shaft of the left center tilling rotor 30LC via a clutch. has been done. When the work body is in the unfolded state, the claw shaft of the left end tilling rotor 30LE and the claw shaft of the left center tilling rotor 30LC are clutch-connected, and the rotation of the claw shaft of the left center tilling rotor 30LC is transmitted to the claw shaft of the left end tilling rotor 30LE. It is now possible to do so. The other roles played by the second left side shield cover 16L and the second left side ground leveling body 12L are the same as those of the corresponding elements in the first left side working body 100L described above, and therefore the description thereof will be omitted here.

The second left side shield cover 16L is provided with a second left side connection portion 32L for supporting the second left side work body 101L on the first left side work body 100L via the first left side connection portion 28L. Similar to the first left side rotation shaft 102L, the first left side connection part 28L and the second left side connection part 32L are rotatably connected by bolts and nuts, and the bolt functions as the second left side rotation axis 104L. do.

Here, the distance from the second left side shield cover 16L to the second left side rotation axis 104L in the height direction is from the second left side rotation axis 104L to the support frame 24 (side frame). It is provided at a position that is greater than the distance to the upper end surface of. Thereby, when the second left side work body 101L is in the first folded state, the second left side work body 101L does not interfere with the upper end surface of the support frame 24, and the second left side work body 101L can be rotated 180 degrees. Note that in this case as well, the second left rotation shaft 104L is located below the height position of the first left rotation shaft 102L. Further, in the width direction of the work body, the second left rotation shaft 104L may be located on the second left work body 101L side (that is, above the second left work body 101L in rear view).

The first right side work body 100R is configured symmetrically with the above-described first left side work body 100L and has the same configuration, so a description thereof will be omitted. Similarly, the second right side work body 101R has substantially the same configuration as the second left side work body 101L described above, so the description thereof will be omitted.

Further, although not shown, the rotary work machine 100 according to an embodiment of the present invention is provided with a rotation mechanism for folding the work body. The rotation mechanism includes a first rotation mechanism for bringing the work body into a first folded state, and a second rotation mechanism for bringing the work body into a second folded state. The first rotation mechanism has a left and right pair (two) of first hydraulic cylinders that connect the support member 20 and the second left shield cover 16L or the second right shield cover 16R, and these two By individually controlling the expansion and contraction of each hydraulic cylinder, the second left side work body 101L and the second right side work body 101R can be rotated 180 degrees independently. The second rotation mechanism also has a pair of left and right second hydraulic cylinders (two) that are independently controlled, one end of each second hydraulic cylinder is attached to the support frame 24, and the other end is attached to the first left shield cover 14L or It is fixed to the first right shield cover 14R. By expanding and contracting the two second hydraulic cylinders individually, the first left side work body 100L and the first right side work body 100R can be rotated 90 degrees independently.

<1-2. First folded state of rotary work machine 100>
The first folded state of the rotary work machine 100 in one embodiment of the present invention will be described using FIGS. 2 and 3. FIG. When transitioning from the unfolded state to the first folded state, in front view, the second left side work body 101L is centered around the second left rotation axis 104L with respect to the first left side work body 100L. Rotate 180 degrees inward, that is, in the direction of the black arrow (counterclockwise). Further, the second right side work body 101R is also moved inwardly toward the center of the work body with respect to the first right side work body 100R around the second right rotation axis 104R, that is, in the direction of the black arrow (clockwise). ) rotates 180 degrees.

As shown in FIGS. 3(A) and 3(B), in the first folded state, the second left shield cover 16L overlaps the first left shield cover 14L, and the second right shield cover 16R is superimposed on the upper side of the first right shield cover 14R. At this time, the second left rotation shaft is rotated so that the second left shield cover 16L or the second right shield cover 16R located on the upper side does not come into contact with the surface (upper end surface) of the first left shield cover 14L located on the lower side. The widthwise position and height position of 104L and the second right rotation shaft 104R have been determined. The height positions of the second left rotation shaft 104L and the second right rotation shaft 104R are configured to be lower than the height positions of the first left rotation shaft 102L and the first right rotation shaft 102R. ing. In a side view of the rotary working machine 100 in the first folded state, the first left rotation axis 102L, the first right rotation axis 102R, the second left rotation axis 104L, and the second right rotation axis 104R are all parallel to each other. In addition, the first left rotation axis 102L is configured to overlap with the first right rotation axis 102R, and the second left rotation axis 104L is configured to overlap with the second right rotation axis 104R. In other words, the first left rotation shaft 102L is at the same height as the first right rotation shaft 102R, and the second left rotation shaft 104L is at the same height as the second right rotation shaft 104R. 102L and the first right side rotation axis 102R, the second left side rotation axis 104L and the second right side rotation axis 104R are not on the same line but are shifted. Further, the first surface 108 including the first left rotation shaft 102L and the first right rotation shaft 102R is substantially parallel to the second surface 106 including the second left rotation shaft 104L and the second right rotation shaft 104R. It is a similar surface, and it is not the same surface.

Further, the rotary work machine 100 rotates the second left shield cover 16L in a direction opposite to the direction in which it is folded toward the outside of the work body (clockwise in front view, counterclockwise in rear view), and By rotating the right side shield cover 16R in the direction opposite to the direction in which it is folded toward the outside of the work body (counterclockwise in front view, clockwise in rear view), There is a transition from the 1-folded state to the unfolded state shown in FIG. 2(B).

<1-3. Storing state of rotary work machine 100>
The stored state of the rotary working machine 100 in an embodiment of the present invention will be described using FIGS. 3 and 4. FIG. In the rotary work machine 100 of the present embodiment, when transitioning to the storage state after being in the first folded state, the first left work body 100L is centered around the first left rotation axis 102L when viewed from the front, The left central tilling rotor 30LC is rotated 90 degrees inward toward the center of the work body relative to the support member 20 in the direction of the black arrow (counterclockwise) so that it faces outward. The same is true for the first right side work body 100R, and the right center tilling rotor 30RC is rotated inwardly toward the center of the work body with respect to the support member 20 so that the right central tilling rotor 30RC faces outward. Rotate 90 degrees in the direction of the arrow (clockwise).

As a result, the work bodies in the stored state overlap in the order from the left: the first left side work body 100L, the second left side work body 101L, the second right side work body 101R, the first right side work body 100R, and the second left side work body 101L. The left end tilling rotor 30LE and the right end tilling rotor 30RE of the second right side work body 101R are folded so as to face each other on the inside (center side of the rotary working machine 100) (see FIG. 4(B)).

Note that the movement from the stored state to the first folded state may be performed by performing the opposite operation to the above-described movement to the stored state. The first left side work body 100L is rotated 90 degrees toward the outside in the opposite direction to the folding direction (clockwise in front view, counterclockwise in rear view). By similarly rotating the first right side work body 100R, the rotary work machine 100 transitions from the stored state to the first folded state.

As described above, in the rotary work machine 100 of this embodiment, the work body is divided into four parts: the first left work body 100L, the second left work body 101L, the first right work body 100R, and the second right work body 101R. After rotating the work bodies located on the outside (second left work body 101L, second right work body 101R) by 180 degrees and folding them inward, the work bodies located on the center side are further folded so that the folded work bodies face each other. (The first left side work body 100L and the first right side work body 100R) are rotated by 90 degrees. With such a configuration, in the rotary work machine 100 of the present embodiment, it is possible to make the total width W3 in the retracted state smaller than half of the total width W1 in the unfolded state. This makes it possible to satisfy the width requirements of the rotary work machine 100 required when driving on public roads with the rotary work machine 100 attached.

Note that the mode of implementation can be changed as appropriate without going against the spirit of the present invention, and is not limited to this embodiment. For example, in the drive system of the tilling rotor 30 in this embodiment, the power input from the traveling body 200 is distributed to the left and right within the gear box 22, and then transmitted to the (two) transmission shafts arranged on the shield cover. , are transmitted to the claw shafts of the first left side work body 100L and first right side work body 100R, and then to the nail shafts of the second left side work body 101L and second right side work body 101R, in this order via the (two) chain drive units. .

On the other hand, it is also possible to use a center drive system as the drive system for the tilling rotor 30. In this case, a chain drive section is arranged substantially directly below the gear box 22, and a clutch mechanism is provided on each of the left and right sides of the chain drive section. Power from the input shaft 18 is transmitted to the pawl shafts of the first left side work body 100L and the first right side work body 100R via this clutch mechanism. Note that power transmission from the pawl shafts of the first left side work body 100L and the first right side work body 100R to the pawl shafts of the second left side work body 101L and second right side work body 101R is performed using a clutch mechanism, as in the present embodiment. All you have to do is set it up. In such a center drive drive, since there is no transmission shaft on the shield cover, interference with the transmission shaft of the second left side work body 101L and the second right side work body 101R is taken into consideration when transitioning to the first folded state. There's no need.

<2. Second embodiment>
A foldable rotary work machine according to a second embodiment will be described with reference to FIGS. 5 to 7. The rotary work machine 100 according to the present embodiment has substantially the same configuration as the rotary work machine 100 according to the first embodiment, but the structure related to folding of the work body is different. Therefore, here, compared to the rotary working machine 100 of the first embodiment, mainly different points will be explained, and explanation of other points will be omitted. Note that in the drawings, descriptions of structures that are the same as or similar to those in FIGS. 1 to 4 may be omitted. However, the configuration shown in FIG. 5 is only an example, and the configuration of the rotary working machine 100 in this embodiment is not limited to the configuration shown in FIG. 5.

<2-1. Configuration of rotary work machine 100>
As shown in FIG. 5, the rotary work machine 100 of the present embodiment has a first left side connection part 28L, a first right side connection part 28R, a second left side connection part 28L, and a second left side connection part 28L, compared to the rotary work machine 100 of the first embodiment. The configurations of the portion 32L and the second right side connecting portion 32R are different, and the second left rotation shaft 104L and the second right rotation shaft 104R are configured such that the front side is higher than the rear side.

Specifically, the first left side connecting portion 28L provided on the first left side shield cover 14L is inclined rearward with respect to the perpendicular line in the vertical direction to the surface (top surface) of the first left side shield cover 14L. The second left connecting portion 32L provided on the left shield cover 16L is also tilted rearward with respect to the perpendicular line in the vertical direction to the surface (upper surface) of the second left shield cover 16L. Similarly, the first right side connecting portion 28R provided on the first right side shield cover 14R and the second right side connecting portion 32R provided on the second right side shield cover 16R are connected to the surfaces (top surfaces) of the shield covers (14R, 16R). tilted backwards with respect to the vertical perpendicular to. A second left side rotation axis 104L is a rotation axis of the second left side connection part 32L with respect to the first left side connection part 28L, and a second left side rotation axis 104L is a rotation axis of the second right side connection part 32R with respect to the first right side connection part 28R. The two right rotation axes 104R are on the same plane and lower toward the rear.

In the present embodiment, by inclining the second left rotation axis 104L and the second right rotation axis 104R in this way, the second left side work body 101L and the second right side work body 101R can be moved in the first folded state. The first left side work body 100L and the first right side work body 100R can be folded while being shifted in plan view position. That is, in the front-rear width direction, in the first folded state, the second left side work body 101L and the second right side work body 101R do not completely overlap with the first left side work body 100L and the first right side work body 100R (only partially). Therefore, it is possible to avoid interference with structures on the first left side work body 100L and the first right side work body 100R.

As a result, the rotary work machine 100 of this embodiment can have a higher degree of freedom in layout than the rotary work machine 100 of the first embodiment. For example, even if the support frame 24 (transmission shaft) is provided on the first left side work body 100L and the first right side work body 100R, in the first folded state, the second left side work body 101L and the second right side work body Since 101R does not interfere with these, it is possible to set the widths of the second left side work body 101L and the second right side work body 101R to be longer than in the rotary work machine 100 of the first embodiment. Further, since a large space can be secured near the center of the work machine, it is possible to increase the degree of freedom in layout when arranging parts on the first left side work body 100L and the first right side work body 100R.

Note that the left end 24L, the left end connection 26L, the right end 24R, and the right end connection 26R have the same configuration as the first embodiment described above, and the left end 24L and the left end connection The first left rotation shaft 102L, which is the rotation axis for the portion 26L, and the first right rotation shaft 102R, which is the rotation axis for the right end portion 24R and the right end connection portion 26R, are at the same height. They are configured to be on the same plane. The first surface 108 including the first left rotation shaft 102L and the first right rotation shaft 102R is connected to the second surface 106 including the second left rotation shaft 104L and the second right rotation shaft 104R in side view. (see Figure 5(A)).

<2-2. First folded state of rotary work machine 100>
The first folded state of the rotary work machine 100 in this embodiment will be explained using FIGS. 5 and 6. In this embodiment as well, as in the first embodiment, when viewed from the front, the second left side work body 101L is a work body relative to the first left side work body 100L about the second left rotation axis 104L. Rotate 180 degrees inward toward the center, that is, in the direction of the black arrow (counterclockwise). Further, the second right side work body 101R is also moved inwardly toward the center of the work body with respect to the first right side work body 100R around the second right rotation axis 104R, that is, in the direction of the black arrow (clockwise). ) rotates 180 degrees.

As shown in FIG. 6A, in a side view of the first folded state of this embodiment, only a part of the second left side work body 101L overlaps with the first left side work body 100L in the front-back direction. . Similarly, a portion of the second right side work body 101R overlaps with the first right side work body 100R. Further, as shown in FIG. 6(B), in a front view of the rotary work machine 100 in the first folded state, the second left side work body 101L overlaps the first left side work body 100L, and the second right side work body 101R is superimposed on the first right side work body 100R.

<2-3. Storing state of rotary work machine 100>
The stored state of the rotary work machine 100 in this embodiment will be explained using FIGS. 5 and 7. In this embodiment as well, similarly to the first embodiment, the first left side work body 100L has a supporting member such that the left central tilling rotor 30LC faces outward with the first left rotation axis 102L as the center when viewed from the front. 20, rotate 90 degrees inward toward the center of the work body in the direction of the black arrow (counterclockwise). The same is true for the first right side work body 100R, and the right center tilling rotor 30RC is rotated inwardly toward the center of the work body with respect to the support member 20 so that the right central tilling rotor 30RC faces outward. Rotate 90 degrees in the direction of the arrow (clockwise).

As described above, the second left rotation shaft 104L and the second right rotation shaft 104R are tilted so that in the first folded state, the outer work bodies (second left work body 101L, second right work body 101R) are tilted. ) is shifted in the front-back direction with respect to the inner working bodies (first left working body 100L, first right working body 100R), in the first folded state or stored state, compared to the first embodiment. , the thickness of the folded work body increases in the front-rear direction. At this time, if the thickness of the folded work body increases toward the traveling machine body 200, there is a possibility that the work body may interfere with the traveling machine body 200. Therefore, in this embodiment, the inclinations of the second left rotation shaft 104L and the second right rotation shaft 104R are configured to become lower as they go toward the rear, and the folded outer work body (second left work body 101L and the second right side work body 101R) are positioned more rearward than the inner side work bodies (the first left side work body 100L and the first right side work body 100R). Therefore, the folded outer work body does not protrude toward the traveling body 200 side.

As described above, the rotary work machine 100 according to the present embodiment can be provided so that the first surface 108 intersects the second surface 106, so that it can be folded into a smaller size. Therefore, by including the configuration of the present invention, it is possible to provide a foldable working machine having a configuration that is further suitable for transportation and storage.

The configurations described above as embodiments of the present invention may be implemented in appropriate combinations as long as they do not contradict each other.

Note that the present invention is not limited to the above-described embodiments, and can be modified as appropriate without departing from the spirit.

10L: First left leveling body, 10R: First right leveling body, 12L: Second left leveling body, 12R: Second right leveling body, 14L: First left side shield cover, 14R: First right side shield cover, 16L: Second left shield cover, 16R: Second right shield cover, 18: Input shaft, 20: Support member, 22: Gear box, 24: Support frame, 24L: Left end, 24R: Right end, 26L: Left end connection part, 26R: right end connection part, 28L: first left side connection part, 28R: first right side connection part, 30: tilling rotor, 30LC: left center tilling rotor, 30LE: left end tilling rotor, 30RC: right center Tilling rotor, RE: right end tilling rotor 30, 32L: second left side connection section, 32R: second right side connection section, 100: rotary working machine, 100L: first left side work body, 100R: first right side work body, 101L: 2nd left side working body, 101R: 2nd right side working body, 102L: 1st left side rotation axis, 102R: 1st right side rotation axis, 104L: 2nd left side rotation axis, 104R: 2nd right side rotation axis, 106: Second surface, 108: First surface, 110: Rotating shaft, 200: Traveling aircraft

Claims (7)

a support member having a left end and a right end;
a first left side work body having a left side connection portion and supported rotatably about a first left rotation axis with respect to the left side end portion;
a second left side work body rotatably supported by the left side connecting portion about a second left side rotation axis, and configured to be rotatable with respect to the first left side work body;
a first right-side work body having a right-side connection portion and rotatably supported on the right-side end portion about a first right-side rotation axis;
a second right side work body rotatably supported by the right side connection part about a second right side rotation axis, and configured to be rotatable with respect to the first right side work body ;
In a deployed state in which the first left side work body, the second left side work body, the first right side work body, and the second right side work body are arranged substantially in a straight line in the left-right direction so as to have a maximum tillage width, The support member is arranged between a first surface including the first left rotation axis and the first right rotation axis, and a second surface including the second left rotation axis and the second right rotation axis. arranged to be located at,
work equipment. In the unfolded state, the first surface is a surface substantially parallel to the second surface, and is not the same surface.
The working machine according to claim 1 . The first surface is configured to be at a higher position than the second surface,
The working machine according to claim 2 . a support member having a left end and a right end;
a first left side work body having a left side connection portion and supported rotatably about a first left rotation axis with respect to the left side end portion;
a second left side work body rotatably supported by the left side connecting portion about a second left side rotation axis, and configured to be rotatable with respect to the first left side work body;
a first right-side work body having a right-side connection portion and rotatably supported on the right-side end portion about a first right-side rotation axis;
a second right side work body rotatably supported by the right side connection part about a second right side rotation axis, and configured to be rotatable with respect to the first right side work body;
In a deployed state in which the first left side work body, the second left side work body, the first right side work body, and the second right side work body are arranged substantially in a straight line in the left-right direction so as to have a maximum tillage width,
A first surface including the first left rotation axis and the first right rotation axis intersects a second surface including the second left rotation axis and the second right rotation axis .
work equipment. The second surface is configured to become lower toward the rear with respect to the first surface.
The working machine according to claim 4 . In the rear view of the unfolded state,
The first left side work body is rotatable approximately 90 degrees clockwise about the first left rotation axis with respect to the support member,
The second left side work body is rotatable approximately 180 degrees clockwise about the second left side rotation axis with respect to the first left side work body,
The first right side work body is rotatable approximately 90 degrees counterclockwise about the first right rotation axis with respect to the support member,
The second right side work body is rotatable approximately 180 degrees counterclockwise about the second right side rotation axis with respect to the first right side work body.
A working machine according to any one of claims 1 to 5 . In rear view, the second left side work body is rotated approximately 180 degrees clockwise with respect to the first left side work body, the second left side work body is superimposed on the first left side work body, and the second left side work body is rotated approximately 180 degrees clockwise with respect to the first left side work body, rotating the right side work body approximately 180 degrees counterclockwise relative to the first right side work body, and superimposing the second right side work body on the first right side work body;
Further, the first left side work body is rotated approximately 90 degrees clockwise about the first left side rotation axis with respect to the support member, and the first right side work body is rotated about the first right side rotation axis. In a state where it is centered and rotated approximately 90 degrees counterclockwise with respect to the support member,
The total width of the working machine is less than half the width in the unfolded state.
The working machine according to claim 6 .

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