JP7133834B2 - work machine - Google Patents

Description

The present invention relates to working machines. In particular, the present invention relates to a work machine capable of operating an actuator provided in the work machine even when equipment for operating the work machine becomes inoperable.

A puddling machine is known as one of the machines for raking a field and leveling the surface of the raking field. The puddling work machine is attached to the rear part of a traveling body such as a tractor and towed. The plowing machine comprises a plowing rotor that rakes a field by rotating a plurality of claws attached to a rotating shaft, and an apron (first a central leveling body, a first left side leveling body, or a first right side leveling body), and a leveler (second center leveling body, second 2 left side leveling body or second right side leveling body). An apron and a leveler included in the work machine are rotatable by an actuator such as a motor or a hydraulic cylinder for rotation. The actuators are, for example, electrically operated.

In recent years, working machines, including puddling machines, have been equipped with means for wirelessly or wiredly operating an object to be operated, so that workers can remotely control the working machines. For example, the operator can remotely operate the actuator provided in the puddling work machine by means of wirelessly or wiredly operating the object to be operated, so that the work can be efficiently performed. On the other hand, if the means for wirelessly or wiredly operating the object to be operated fails, or if the means for wirelessly or by wire operating the object to be operated is lost, there is a problem that the actuator provided in the work machine cannot be operated. be.

For example, Patent Literature 1 discloses that when an electrical component (means for wirelessly or wiredly operating a target to be operated) fails or becomes inoperable, the actuator is forcibly operated. A farm implement is disclosed that can be operated dynamically.

The agricultural work machine disclosed in Patent Document 1 receives an operation signal from an operation unit, and based on the received operation signal, a battery is used as a power source, and a part of the agricultural work machine is operated by an actuator under the control of a control unit. . The control unit, actuator, and battery are connected via a main harness. It has a working harness with connectors at both ends. The main harness has a branch harness portion that is branched in the middle and has a connector at its tip. When the connector at one end of the operating harness is connected to the connector at the tip of the branch harness and the actuator is connected to the connector at the other end of the operating harness, power from the battery is directly sent to the actuator to operate the actuator. can be done. The tip of the branch harness portion has two connectors of the same shape, and one end of the operating harness has two connectors of the same shape. The two connectors at the ends of the branch harness can be connected to either of the two connectors at one end of the operating harness, and when these connections are reversed, the actuator operates in the opposite direction.

Japanese Patent No. 5701650

In the embodiment of the agricultural implement disclosed in Patent Literature 1, the working harness is provided so as to be used only in an emergency when the electrical component fails or becomes inoperable, and thus does not require an emergency. Compared to the case, it has a configuration in which an operation harness is provided separately. Therefore, it is necessary to secure a place for the operation harness separately in the agricultural working machine, and there is a possibility that the manufacturing cost of the agricultural working machine increases.

SUMMARY OF THE INVENTION An object of the present invention is to provide a work machine capable of operating an actuator provided in the work machine even when a device for operating the work machine becomes inoperable.

A work machine according to an embodiment of the present invention has a first harness (harness 60b) having a first connecting portion (connector 80b) at one end, a second connecting portion (connector 82b) at one end, and a rotating wire at the other end. A second harness (harness 62b) connected to an electromagnetic hydraulic valve that controls the opening and closing of the path for supplying hydraulic pressure to the dynamic hydraulic cylinder, a third connection (connector 86) at one end, and electricity at the other end. It has a third harness (harness 66aa) that is supplied, and when power is supplied to the other end of the first harness, the electromagnetic hydraulic pressure is Electric power is supplied to the valve from the other end of the first harness, and when electric power is not supplied to the other end of the first harness, the third connection portion and the second connection portion are connected to each other, thereby operating the electromagnetic hydraulic valve. is supplied with power from the other end of the third harness. The description of the symbols in parentheses corresponds to the description of the symbols shown in FIG. 3, FIG. 4, FIG. 8, or FIG. The same applies to the following.

The first connecting portion, the second connecting portion, and the third connecting portion may be connectors, and the shape of the connector of the first connecting portion may be the same as the shape of the connector of the third connecting portion. .

The working body may be in a folded state by rotating the working body by the action of the rotating hydraulic cylinder.

One end has a fourth connection portion (connector 88), the other end has a fourth harness (harness 68) connected to an external relay that controls power supply to the driving portion, and the other end of the first harness. When power is supplied to the third and fourth connection portions, the external relay supplies power from the other end of the third harness to the driving portion, and to the other end of the first harness. When power is not supplied, the fourth connection may be disconnected from the third connection and the third connection and the second connection may be connected.

The work machine has a first harness (harness 60b) having a first connection portion (connector 80b) at one end, a second connection portion (connector 82b) at one end, and a first turning hydraulic pressure at the other end. A second harness (harness 62b) connected to a first electromagnetic hydraulic valve that controls opening and closing of the path supplying hydraulic pressure to the cylinder, a third connection (connector 86) at one end, and an electric power at the other end. A third harness (harness 66aa) to which is supplied, a fourth harness (harness 60a) having a fourth connection portion (connector 80a) at one end, a fifth connection portion (connector 82a) at one end, and other a fifth harness (harness 62a) whose end is connected to a second electromagnetic hydraulic valve that controls opening and closing of a path for supplying hydraulic pressure to the second hydraulic cylinder for rotation; and the other end of the first harness. When power is supplied to , the first electromagnetic hydraulic valve is supplied with power from the other end of the first harness by connecting the first connection portion and the second connection portion, and the fourth harness is supplied with power. When power is supplied to the other end of the fourth harness, power is supplied to the second electromagnetic hydraulic valve from the other end of the fourth harness by connecting the fourth connection portion and the fifth connection portion. When power is not supplied to the other end of the harness and the second connection portion is connected to the third connection portion, power is supplied to the first electromagnetic hydraulic valve from the other end of the third harness and the fourth harness is connected. When no power is supplied to the other end and the fifth connection is connected to the third connection, power is supplied to the second electromagnetic hydraulic valve from the other end of the third harness.

The first connecting portion, the second connecting portion, the third connecting portion, the fourth connecting portion, and the fifth connecting portion are connectors, and the shape of the connector of the first connecting portion and the third connecting portion and the shape of the connector of the fourth connection portion may be the same, and the shape of the connector of the second connection portion and the shape of the connector of the fifth connection portion may be the same.

By rotating the first working body by the action of the first electromagnetic hydraulic valve, the first working body is folded, and by the action of the second electromagnetic hydraulic valve, the second work is performed. By rotating the body, the second working body may be in a folded state.

One end has a sixth connection portion (connector 88), the other end has a sixth harness (harness 68) connected to an external relay that controls power supply to the driving portion, and the other end of the first harness. When power is supplied to the third and sixth connection parts, the external relay supplies power from the other end of the sixth harness to the driving part, and to the other end of the first harness. When power is not supplied, the sixth connection may be disconnected from the third connection and the third connection and the second connection may be connected.

The first connection portion (input terminal 92b) and the second connection portion (output terminal 94b) are connected by a first switch (switch 96b) connected to the first connection portion, and the first switch is connected to the second connection portion. A second switch (switch 96c) disconnected from and connected to the third connection portion (input terminal 92c) is connected to the second connection portion, thereby connecting the first connection portion and the second connection portion; The connection between the third connection portion and the second connection portion may be switchable.

ADVANTAGE OF THE INVENTION According to this invention, the work machine which can operate the actuator with which the work machine was equipped can be provided, even when the apparatus which operates a work machine becomes inoperable.

1 is a perspective view showing the configuration of a working machine in one embodiment of the present invention; FIG. 1 is a perspective view showing a configuration of a working machine in one embodiment of the present invention when a left working body is folded; FIG. FIG. 4 is a diagram showing part of a path for supplying power in an embodiment of the present invention when a control box or a means capable of operating a target to be operated wirelessly or by wire is operable. FIG. 5 is a diagram showing part of a path for supplying electric power in an embodiment of the present invention when a control box or means for wirelessly or wiredly operating an object to be operated is inoperable. FIG. 5 is a diagram showing the front view of the agricultural working machine according to the embodiment of the present invention, and is a diagram for explaining the pivoting motion of the side working body with respect to the central working body. FIG. 5 is a diagram showing the front view of the agricultural working machine according to the embodiment of the present invention, and is a diagram for explaining the pivoting motion of the side working body with respect to the central working body. FIG. 5 is a diagram showing the front view of the agricultural working machine according to the embodiment of the present invention, and is a diagram for explaining the pivoting motion of the side working body with respect to the central working body. FIG. 4 is a diagram showing part of a path for supplying power in an embodiment of the present invention when a control box or a means capable of operating a target to be operated wirelessly or by wire is operable. FIG. 5 is a diagram showing part of a path for supplying electric power in an embodiment of the present invention when a control box or means for wirelessly or wiredly operating an object to be operated is inoperable.

An embodiment of a work machine of the present invention will be described below with reference to the drawings. However, the work machine of the present invention can be embodied in many different modes, and should not be construed as being limited to the description of the examples shown below.

In the drawings referred to in the present embodiment, the same parts or parts having similar functions are denoted by the same reference numerals or similar symbols, and repeated description thereof may be omitted. For example, when the working machine of the present invention is composed of three working bodies, a central working body, a left working body, and a right working body, the number is followed by "C" to indicate that each working body has a part. , “L” and “R” may be attached.

In the specification and claims of the present application, "up" indicates the direction away from the field vertically, and "down" indicates the direction vertically toward the field. "Front" indicates the direction in which the traveling machine body is positioned with respect to the working machine, and "rear" indicates the direction opposite to the front by 180 degrees. Also, "left" indicates the left when the traveling machine body faces the direction in which the working machine is positioned as a reference, and "right" indicates the direction opposite to the left by 180 degrees.

<Embodiment 1>
[Configuration of working machine 10]
A configuration of a working machine 10 according to an embodiment of the present invention will be described in detail below with reference to FIGS. 1 and 2. FIG. FIG. 1 is a perspective view showing the configuration of a work machine according to one embodiment of the present invention. FIG. 2 is a perspective view showing the configuration of the working machine in one embodiment of the present invention when the left working body is folded. Since FIG. 2 is a diagram in which only the position of the left working body 10L is changed from that of FIG. 1, some of the reference numerals already mentioned in FIG. 1 are omitted for convenience of explanation.

As shown in FIG. 1, the working machine 10 according to the present embodiment has a structure divided into three, including a central working body 10C, a left working body 10L and a right working body 10R. The central working body 10C is arranged in the central portion of the working machine 10 and functions as a working machine main body. The left working body 10L and the right working body 10R are attached to both left and right ends of the central working body 10C so as to be vertically rotatable. By rotating the left working body 10L and the right working body 10R obliquely upward, the working machine 10 can be folded over the central working body 10C. can be expanded.

Here, the state in which the left working body 10L and the right working body 10R are folded over the central working body 10C is called a stored state. The stowed state is a state in which the width of the work implement 10 in the direction orthogonal to the traveling direction of the traveling machine body is reduced. A state in which the left working body 10L, the right working body 10R, and the central working body 10C are arranged side by side is called a deployed state. The deployed state is a state in which work implement 10 is extended in a direction perpendicular to the traveling direction of the traveling machine body.

Next, the central working body 10C will be described. The central working body 10C includes a top mast 12 and a lower link connecting part 14 which function as connecting parts with a traveling machine body such as a tractor, an input shaft 16 to which power is transmitted from the traveling machine body, and a laterally extending supporting central working body 10C. support frame 18, transmission frame (chain case) 20C, gearbox 22, central shield cover 24C, tillage rotor (not shown), first central leveling body 28C, drive motor portion 28Ca, second central leveling body 30C, apron It has control mechanisms 31a and 31b and a central leveler control mechanism 32C.

The top mast 12 is provided at the front central portion of the central working body 10C, and the lower link connecting portions 14 are provided at two locations on the front left and right sides of the central working body 10C. The top mast 12 and the lower link connecting portions 14 provided at two locations on the left and right are connected to a top link (not shown) of the traveling machine body and lower links (three-point link hitch mechanisms) provided at two locations on the left and right, respectively. is attached to the rear part of the traveling body so that it can be raised and lowered. The work implement 10 and the traveling machine body may be connected via an automatic hitch frame attached to the three-point link hitch mechanism of the traveling machine body.

The input shaft 16 is provided in a gear box 22 provided in the front central portion of the central working body 10</b>C, and inputs power transmitted from the traveling machine body to the working machine 10 . The input shaft 16 is connected to the PTO shaft of the traveling machine body, and power is transmitted from the PTO shaft via a universal joint or the like.

The support frame 18 also serves as the body frame of the central working body 10C, and extends in the left and right direction with respect to the traveling direction of the traveling body on both the left and right sides of the gear box 22 . Here, a transmission shaft (not shown) is installed inside the support frame 18 arranged between the gearbox 22 and the transmission frame 20C. Through this transmission shaft, power for rotating the tillage rotor is transmitted from the gear box 22 to the transmission frame 20C.

A central shield cover 24C is provided along the support frame 18 and arranged to cover the top of the tillage rotor. The soil crushed by the tillage rotor collides with the inner wall of the central shield cover 24C and is crushed further, and falls back to the field. In this way, the central shield cover 24C has both the function of preventing scattering of the soil picked up by the tillage rotor and the function of crushing the soil.

The tillage rotor of the central working body 10C has a configuration in which a plurality of tillage tines are attached using a flange or a holder to a rotating shaft (not shown) rotatably supported under the central shield cover 24C. have. The power input from the input shaft 16 is changed in the gear box 22, transmitted through the transmission shaft in the support frame 18, the transmission frame 20C, etc., and converted into rotary motion of the tillage rotor.

The first central leveling body 28C is rotatably attached to the central shield cover 24C and is generally called an apron. The second central leveling body 30C is attached to the first center leveling body 28C so as to be vertically rotatable, and is usually called a leveler. The first central leveling body 28C serves as a cover for returning mud and soil scattered by the rotation of the tillage rotor of the central working body 10C back to the field, and also serves as a ground leveling member that performs leveling work by pressing the second central leveling body 30C against the field. play a role as The second central leveling body 30C plays a role as a ground leveling member that levels the surface of the field by directly contacting the field.

The apron control mechanisms 31a and 31b are installed between the central shield cover 24C and the first central leveling body 28C, and function as means for controlling the vertical rotation of the first central leveling body 28C. The apron control mechanisms 31a and 31b have a pressurization mode that prevents the upward rotation of the first central ground leveling body 28C and a non-pressurization mode that does not hinder the upward rotation of the first central ground leveling body 28C. It is switchable, and in the pressurization mode, a biasing force is exerted on the first central leveling body 28C to prevent upward rotation. This urging force is realized by the reaction force of springs arranged on the link rods constituting the apron control mechanisms 31a and 31b. By setting the apron control mechanisms 31a and 31b to the pressurizing mode, it is possible to improve the soil crushing performance and the ground leveling performance of the first central leveling body 28C, and to finish the field more efficiently. Note that the apron control mechanisms 31a and 31b are connected to, for example, the drive motor section 28Ca by wires and controlled. Details of the apron control mechanisms 31a and 31b will be described later.

The central leveler control mechanism 32C is installed between the central shield cover 24C and the second central leveling body 30C, and functions as means for controlling the vertical rotation of the second central leveling body 30C. The central leveler control mechanism 32C has a soil leveling mode in which the second central leveling body 30C is fixed in a state in which it is oriented downward (a soiling state) and a leveling mode in which the second central leveling body 30C is not prevented from rotating in the vertical direction. Switchable. Mode switching is realized by regulating or canceling the operation of the link rod that constitutes the central leveler control mechanism 32C by the central shovel motor 25C that constitutes the central leveler control mechanism 32C.

Next, the left working body 10L will be described. The left working body 10L includes a left shield cover 24L, a tillage rotor 26L (see FIG. 2) arranged below the left shield cover 24L, a transmission frame (chain case) 20L, a first left leveling body 28L, and a second left leveling body. 30L, a left leveler control mechanism 32L, and a left extension leveling body rotation mechanism 34L. The roles of the left shield cover 24L, the transmission frame 20L, the first left leveling body 28L, the second left leveling body 30L, and the left leveler control mechanism 32L are the same as those of the corresponding elements in the central working body 10C. Therefore, the description here is omitted.

Here, as shown in FIG. 2, the tillage rotor 26L includes a rotary shaft 26La and a plurality of tillage tines 26Lb arranged around the rotary shaft 26La via holders. When the rotating shaft 26La rotates by the power transmitted through the transmission frame 20L, the tillage tines 26Lb arranged around it rotate all at once, crushing and agitating the soil in the field. Although not shown, the tilling rotors of the central working body 10C and the right working body 10R also have the same construction as the tilling rotor 26L.

Returning to FIG. 1, the left extended ground leveling body rotation mechanism 34L is a mechanism for rotating the left extended ground leveling body 36L rotatably connected to the second left side ground leveling body 30L of the left working body 10L. be. The left extended ground leveling body 36L is provided by extending from the end of the left side working body 10L in the left direction of the working machine 10, and is responsible for leveling the area outside the left side working body 10L. The second left ground leveling body 30L and the left extended ground leveling body 36L are rotatably connected by an extended ground leveling body connecting portion 38L so that the left extended ground leveling body 36L is folded toward the second left side ground leveling body 30L. It is rotatable.

Here, in the present embodiment, the left extended ground leveling member rotating mechanism 34L includes a drive motor portion 34La, a rotating arm 34Lb, and a connecting wire 34Lc. The rotating arm 34Lb has one end connected to the driving motor portion 34La and the other end connected to the connecting wire 34Lc. One end of the connecting wire 34Lc is connected to the rotating arm 34Lb, and the other end is connected to the left extended ground leveling body 36L.

When the driving motor portion 34La operates, a rotational driving force is generated, and the rotating arm 34Lb rotates in a substantially horizontal direction. In conjunction with the rotation of the rotating arm 34Lb, the left extended ground leveling body 36L pulled by the connecting wire 34Lc rotates via the extended ground leveling body connecting portion 38L. As a result, the left extended ground leveling body 36L can be stored and deployed.

In the present embodiment, an example in which the left extended ground leveling body rotating mechanism 34L is composed of the drive motor section 34La, the rotating arm 34Lb, and the connection wire 34Lc is shown. Any other mechanism may be used as long as it allows the extension ground leveling body 36L to rotate.

Next, the right working body 10R will be described. The right working body 10R includes a right shield cover 24R, a tillage rotor (not shown) arranged below the right shield cover 24R, a transmission frame (chain case) 20R, a first right leveling body 28R, and a second right leveling body 30R. , a right leveler control mechanism 32R, and a right extension ground leveling body rotation mechanism 34R. The roles of the right shield cover 24R, the transmission frame 20R, the first right leveling body 28R, the second right leveling body 30R, the right leveler control mechanism 32R, and the right extended leveling body rotation mechanism 34R are described above. Since they are the same as the corresponding elements in the left working body 10L, descriptions thereof are omitted here. The right extended ground leveling body 36R and the extended ground leveling body connecting portion 38R are the same as the left extended ground leveling body 36L and the extended ground leveling body connecting part 38L.

Further, the work machine 10 according to the present embodiment includes the central shovel plates 40Ca and 40Cb, the left shovel plate 40L, and the right shovel plate 40R for the central working body 10C, the left working body 10L, and the right working body 10R, respectively. . These are boards for controlling the flow of water (actually, the flow of water containing soil) generated during puddling work, and by providing these mulching boards, the finish of the field surface can be improved.

For example, the central mulching plates 40Ca and 40Cb are provided at a position to return soil to ruts such as tires of a traveling machine traveling in front of the working machine 10, and contribute to flattening the undulations of the field caused by the ruts. In addition, the left side shovel board 40L and the right side shovel board 40R draw in the surrounding water flow to the back side of each shovel board while gathering soil inward. As a result, even if straw or the like floats outside the ends of the left working body 10L and the right working body 10R, it is pulled into the respective tillage rotors by the water flow, contributing to the improvement of the finish of the field surface.

Further, the working machine 10 according to the present embodiment includes a left leveler control mechanism 32L and a right leveler control mechanism 32R for the left side working body 10L and the right side working body 10R, respectively. Like the central leveler control mechanism 32C, the left leveler control mechanism 32L and the right leveler control mechanism 32R are means for restricting or releasing the vertical rotation of the second left leveling body 30L and the second right leveling body 30R, respectively. function as Further, similarly to the central leveler control mechanism 32C, the left side shoveling motor 25L constituting the left side leveler control mechanism 32L can switch between the shoveling mode and the leveling mode in the left side leveler control mechanism 32L. Furthermore, similarly to the central leveler control mechanism 32C, the right side shoveling motor 25R that constitutes the right side leveler control mechanism 32R can switch between the shoveling mode and the leveling mode in the right side leveler control mechanism 32R.

The left working body 10L and the right working body 10R described above are rotated by the action of hydraulic hydraulic cylinders 46a and 46b for rotation via working body rotating mechanisms 44a and 44b provided at both ends of the central working body 10C. It will be in the aforementioned stored state or unfolded state. At that time, the first central ground leveling body 28C and the first left ground leveling body 28L, and the first center grounding body 28C and the first right ground leveling body 28R are connected by first connecting portions 48a and 48b, respectively. The second center leveling body 30C and the second left side leveling body 30L, and the second center leveling body 30C and the second right side leveling body 30R are connected by the second connecting parts 50a and 50b, respectively. Although the details will be described later, hydraulic hoses supplied with hydraulic pressure for controlling the expansion and contraction of the turning hydraulic cylinders 46a and 46b are attached to the turning hydraulic cylinders 46a and 46b.

Further, the work machine 10 according to the present embodiment described above includes a control box, a hydraulic valve assembly, an external relay, a control box provided in the upper central portion of the central working body 10C and covered by a control box cover 13, details of which will be described later. It has multiple connectors and multiple harnesses. The control box functions at least as a means for controlling the external relays and a means for controlling the expansion and contraction of the pivoting hydraulic cylinders 46a and 46b.

In the present specification and the scope of claims, the collective term for the left working body 10L and the right working body 10R may be referred to as a "side working body". Also, the collective term for the first left leveling body 28L and the first right side leveling body 28R is called the "first side leveling body", and the collective term for the second left side leveling body 30L and the second right side leveling body 30R is It may be called a "second side ground leveling body".

[Configuration of power supply path]
FIG. 3 is a diagram showing part of a path for supplying power in an embodiment of the present invention when a control box or a means capable of wirelessly or wiredly manipulating an object to be manipulated is operable. FIG. 4 is a diagram showing part of a path for supplying power in an embodiment of the present invention when a control box or means capable of wirelessly or wiredly operating an object to be operated is inoperable. 1 and 2 may be omitted in FIGS. 3 and 4. In FIG. In this specification and the like, the case where the control box or means capable of operating the object to be operated by wireless or wired is inoperable means, for example, when the control box fails and power cannot be supplied to the electromagnetic hydraulic valve, the control When the box fails and the receiving unit provided in the control box does not operate, the means capable of wirelessly or wiredly operating the object to be operated fails, and the means capable of wirelessly or wiredly operating the object to be operated fails to connect to the control box. For example, a control signal cannot be transmitted to the received unit, or the means for wirelessly operating the object to be operated is lost.

In this specification and the like, it is assumed that the power supply to the electromagnetic hydraulic valves 70L and 70R is controlled by means (not shown) capable of operating an object to be operated wirelessly or by wire. The means capable of operating the object to be operated wirelessly or by wire is, for example, an operation unit capable of wireless operation (hereinafter referred to as an operation unit). Further, in this specification and the like, by supplying electric power to the electromagnetic hydraulic valve 70L or 70R, opening and closing of the electromagnetic hydraulic valve 70L or 70R is controlled, and hydraulic pressure is supplied to the turning hydraulic cylinder 46a or 46b. The path shall be opened and closed. It should be noted that opening and closing the path for supplying the hydraulic pressure may be translated into connecting or blocking the path for supplying the hydraulic pressure. Furthermore, it is assumed that hydraulic pressure is supplied to the turning hydraulic cylinder 46a or 46b by, for example, a hydraulic lever (not shown) provided in the traveling body 200. As shown in FIG. An operator controls the supply of hydraulic pressure to the turning hydraulic cylinder 46a or 46b with a hydraulic lever (not shown), thereby expanding or folding the left working body 10L or the right working body 10R, thereby operating the work machine 10. can be deployed or stowed. In this specification, the actuator may be, for example, a rotary hydraulic cylinder, a hydraulic cylinder, an electric cylinder, an electric hydraulic cylinder, or may include a valve such as an electromagnetic hydraulic valve. may indicate the control system or control mechanism that contains them.

A work machine according to an embodiment of the present invention in which a control box or an operation unit is operable will be described with reference to FIG. During normal operation, the control box 13a is connected to the battery 210 provided in the traveling machine body 200 and the hydraulic valve assembly 70 . The external relay 78 is connected to the battery 210 provided in the traveling body 200, the control box 13a, and the central shoveling motor 25C. Hydraulic valve assembly 70 includes electromagnetic hydraulic valves 70L and 70R. Also, the hydraulic valve assembly 70 is connected to the traveling machine body 200 by hydraulic hoses 72a and 72b. The electromagnetic hydraulic valve 70L is connected to the rotary hydraulic cylinder 46a by hydraulic hoses 72aa and 72ba. The electromagnetic hydraulic valve 70R is connected to the rotary hydraulic cylinder 46b by hydraulic hoses 72ab and 72bb. Note that the control box 13a is also connected to the external relay 78 .

One end of the harness 60a is connected to the control box 13a, and the other end of the harness 60a has a connector 80a. One end of harness 60b is connected to control box 13a and the other end of harness 60b has connector 80b. Harness 62b has connector 82b at one end. The other end of the harness 62b is connected to the hydraulic valve assembly 70 and is connected inside the hydraulic valve assembly 70 to the electromagnetic hydraulic valve 70L. The harness 62a has a connector 82a at one end. The other end of the harness 62a is connected to a hydraulic valve assembly 70, and inside the hydraulic valve assembly 70 is connected to an electromagnetic hydraulic valve 70R. The harness 66a branches into a harness 66aa and a harness 66ab. One end of the harness 66 a is connected to the battery 210 . An end of the harness 66ab is connected to the control box 13a. The harness 66aa has a connector 86 at its end. One end of the harness 67 is connected to the control box 13 a and the other end is connected to the external relay 78 . Harness 68 has a connector 88 at one end. The other end of harness 68 is connected to external relay 78 . One end of the harness 69 is connected to the external relay 78, and the other end is connected to the central mulching motor 25C. The connector 80a is detachably connected to the connector 82a, the connector 80b to the connector 82b, and the connector 86 to the connector 88, respectively. One end of the harness 60a is connected to the control box 13a, and the other end of the harness 60a is branched. It may have a connector 80b. In this case, the first harness includes the harness 60a and the harness branched from the harness 60a, and the second harness includes the harness 62a having one end connected to the connector 82a and the harness 62b having one end connected to the connector 82b. It may be used as a harness.

Here, the connectors 80a, 80b, and 86 have the same shape, and the connectors 82a, 82b, and 88 have the same shape.

The external relay 78 selects at least one drive unit among the drive units connected to the external relay 78 according to an external relay control signal transmitted from the control box 13a through the harness 67, and supplies power to the drive unit. It has a role to supply. The drive unit is, for example, the central shoveling motor 25C. In this specification and the like, an example is shown in which the external relay 78 is connected to the central shoveling motor 25C by a harness 69. The harness 69 is branched, and the branched harnesses are connected to the left shoveling motor 25L and the right shoveling motor 25L, respectively. 25R may be connected. The work machine 10 according to one embodiment of the present invention is provided with the external relay 78, so that power can be selectively supplied from the battery 210 to the drive units that exceed the power that the control box 13a can supply. can. In addition, the external relay 78 is composed of a plurality of switches, and by connecting or disconnecting the switches, it is possible to control the supply or cutoff of power to the driving unit connected to the external relay 78. The external relay 78, for example, can be operated with less power than driving the central mulching motor 25C. It should be noted that the electromagnetic hydraulic valves 70L and 70R provided in the working machine 10 according to one embodiment of the present invention can also be operated with less electric power than, for example, driving the central shoveling motor 25C.

Electric power is supplied from the battery 210 to the central earth gathering motor 25C via the harness 66a, the harness 66aa, the connector 86, the connector 88, the harness 68, the external relay 78, and the harness 69. By supplying power to the central shoveling motor 25C, it is possible to switch between the shoveling mode and the leveling mode in the central leveler control mechanism 32C.

When the control box or the operation unit is operable, the operator operates the operation unit to send an operation signal to a receiving unit (not shown) provided in the control box 13a, and the electromagnetic hydraulic pressure is generated. Power is supplied to the valve 70L via the control box 13a, the harness 60b, the connector 80b, the connector 82b, and the harness 62b. Electric power is supplied to the electromagnetic hydraulic valve 70R via the control box 13a, the harness 60a, the connector 80a, the connector 82a, and the harness 62a. Therefore, the operator can independently control the electromagnetic hydraulic valve 70L and the electromagnetic hydraulic valve 70R. By supplying power to the electromagnetic hydraulic valve 70L, the operator opens the electromagnetic hydraulic valve 70L, that is, connects the hydraulic hose 72a and the hydraulic hose 72aa, and the hydraulic hose 72b and the hydraulic hose 72ba. An oil supply route from the traveling body 200 to the turning hydraulic cylinder 46a can be connected. Similarly, by supplying electric power to the electromagnetic hydraulic valve 70R, the electromagnetic hydraulic valve 70R is opened. An oil supply route from the traveling body 200 to the turning hydraulic cylinder 46b can be connected. Further, the operator can switch the direction of supplying oil to the turning hydraulic cylinder 46a or 46b with the hydraulic lever (not shown) of the traveling machine body. By switching the direction in which oil is supplied to the turning hydraulic cylinder 46a or 46b, the turning hydraulic cylinder 46a or 46b can be extended or contracted. For example, by supplying oil from the traveling machine body 200 to the turning hydraulic cylinder 46a in the order of the hydraulic hose 72a, the hydraulic hose 72aa, the turning hydraulic cylinder 46a, the hydraulic hose 72ba, and the hydraulic hose 72b using the hydraulic lever of the traveling machine body, The rotating hydraulic cylinder 46a may be extended. Similarly, the oil is supplied from the traveling machine body 200 to the turning hydraulic cylinder 46b in the order of the hydraulic hose 72a, the hydraulic hose 72ab, the turning hydraulic cylinder 46b, the hydraulic hose 72bb, and the hydraulic hose 72b by the hydraulic lever of the traveling machine body. , the hydraulic cylinder 46b for rotation may be extended. By extending the hydraulic cylinders 46a and 46b for rotation, the left working body 10L or the right working body 10R rotates via the working body rotating mechanisms 44a or 44b provided at both ends of the central working body 10C. The expanded state shown in 1 is reached. Similarly, the oil is supplied from the traveling body 200 to the hydraulic cylinder 46a for rotation in the order of the hydraulic hose 72b, the hydraulic hose 72ba, the hydraulic cylinder 46a for rotation, the hydraulic hose 72aa, and the hydraulic hose 72a by the hydraulic lever of the traveling body. Hydraulic hose 72b, hydraulic hose 72bb, hydraulic hose 46b, hydraulic hose 72ab, and hydraulic hose 72a are supplied in this order from traveling body 200 to hydraulic hydraulic cylinder 46b for rotation. As a result, the hydraulic cylinder 46b for rotation may be contracted. By contracting the rotating hydraulic cylinder 46a or 46b, the left working body 10L or the right working body 10R rotates via the working body rotating mechanisms 44a or 44b provided at both ends of the central working body 10C. 2 is in the stored state. Note that switching the direction of supplying oil to the turning hydraulic cylinder 46a or 46b may also be referred to as switching the direction of supplying hydraulic pressure to the turning hydraulic cylinder 46a or 46b.

A work machine according to an embodiment of the present invention when the control box or the operation unit cannot be operated will be described with reference to FIG. 4 differs from FIG. 3 in connection of the connector 80b and the connector 86. FIG. In the description of FIG. 4, descriptions similar to those of FIG. 3 are omitted.

The connector 80a is detachably connected to the connector 82a, and the connector 86 is detachably connected to the connector 82b. Also, the connector 80b and the connector 88 are not connected to any connector. Here, as described above, connectors 80a, 80b, and 86 have the same shape, and connectors 82a, 82b, and 88 have the same shape. Since the connector 80b and the connector 86 have the same shape, either one of the connector 80b and the connector 86 can be connected to the connector 82b.

When the control box or the operation unit is inoperable, no power is supplied to the electromagnetic hydraulic valve 70L via the control box 13a, harness 60b, connector 80b, connector 82b, and harness 62b. Electric power is not supplied to the electromagnetic hydraulic valve 70R via the control box 13a, the harness 60a, the connector 80a, the connector 82a, and the harness 62a. Therefore, since the operator cannot open and close the electromagnetic hydraulic valves 70L and 70R, the hydraulic lever cannot supply hydraulic pressure to the turning hydraulic cylinders 46a or 46b, and the left working body 10L cannot operate. Also, the working machine 10 cannot be put into the unfolded state or the stowed state by unfolding or folding the right working body 10R. Therefore, as shown in FIG. 4, the operator removes the connector 80b from the connector 82b and connects the connector 86 to the connector 82b. As described above, power is supplied to the connector 86 via the harness 66a and the harness 66aa. Therefore, when the operator connects the connector 86 to the connector 82b, electric power is supplied to the electromagnetic hydraulic valve 70L, the electromagnetic hydraulic valve 70L can be opened and closed, and then the hydraulic lever of the traveling body can be operated. Hydraulic pressure can be supplied to the hydraulic cylinder 46a for rotation. As a result, by unfolding or folding the left working body 10L, the working machine 10 can be brought into the unfolded state shown in FIG. 1 or the stowed state shown in FIG. Further, in the work machine 10 according to one embodiment of the present invention, the electromagnetic hydraulic valve can be operated with a small amount of electric power, and the hydraulic cylinder for rotation is controlled by hydraulic pressure. Therefore, the electric power for controlling the deployed state or retracted state of the working object can be made smaller than that of an electric cylinder to which electric power is directly supplied, such as an electric cylinder or an electric hydraulic cylinder. .

Although not shown, similarly, when the operator connects the connector 86 to the connector 82a, electric power is supplied to the electromagnetic hydraulic valve 70R so that the electromagnetic hydraulic valve 70R can be opened and closed, and the rotating hydraulic cylinder Hydraulic pressure can be supplied to 46b, and by unfolding or folding the right working body 10R, the working machine 10 can be placed in a deployed state or a retracted state.

In one embodiment of the present invention, as an example, by connecting the connector 86 to which power is directly supplied from the battery 210 to the connector 82b or the connector 82a, the control box or the operation unit cannot be operated. Although the working machine 10 can be set to the unfolded state or the stowed state by unfolding or folding the left working body 10L or the right working body 10R, the example is limited to the example shown here. not. The connector to be connected to the connector 82b or the connector 82a has the same shape as the connector 82b or the connector 82a, and if power is directly supplied from the battery 210 without going through the control box 13a, any connector can be used. good too.

[Rotating operation of lateral working body]
5 to 7, even if the control box or the operation unit is inoperable, by connecting the connector 86 to the connector 82a, the right working body 10R becomes operable. A rotation operation of the working body 10R will be described. 5 to 7 are diagrams showing the front view of the agricultural working machine according to one embodiment of the present invention, and are diagrams for explaining the pivoting motion of the side working body with respect to the central working body. 1 to 4 may be omitted in FIGS. 5 to 7. FIG.

FIG. 5 is a diagram showing a state immediately before the right working body 10R in the unfolded state starts to rotate. In the unfolded state, the right working body 10R is in a state where the working machine 10 is extended in a direction perpendicular to the traveling direction of the traveling body 200 with respect to the central working body 10C. The turning hydraulic cylinder 46b, which is the power source 600, is in the most extended state. In this state, the right working body 10R is subjected to a downward rotating force due to its own weight. As described with reference to FIG. 4, when the operator connects the connector 86 to the connector 82a, power is supplied from the battery 210 included in the traveling machine body 200 to the electromagnetic hydraulic valve 70R via the harness 66a. In this way, the operator opens and closes the electromagnetic hydraulic valve 70R (here, the valve is assumed to be open), and uses the hydraulic lever to move the hydraulic hose 72b, the hydraulic hose 72bb, the hydraulic hose 72ab, and the hydraulic hose 72a from the traveling body 200. In order, hydraulic pressure is supplied to rotate the hydraulic cylinder 46b for rotation, and the power source 600 can be operated (that is, the hydraulic cylinder 46b for rotation is contracted). Here, when the rotating hydraulic cylinder 46b is contracted, the rotating connecting member 500 rotates in the R1 direction. FIG. 6 is a diagram showing a state in which the right working body 10R has rotated upward and is approaching the retracted state. In this state, the hydraulic cylinder 46b for rotation is almost fully contracted. From the state shown in FIG. 6, when the rotary hydraulic cylinder 46b is further contracted, the rotary connecting member 500 is further rotated in the R1 direction, and enters the retracted state shown in FIG. In the retracted state, the right working body 10R is positioned above the central working body 10C. The rotary hydraulic cylinder 46b, which is the power source 600, is in the most contracted state.

As described above, the connector 86 receives power directly from the battery 210 without going through the control box 13a. Therefore, even if the control box or the operation unit cannot be operated, the operator can By connecting 86 to connector 82a, power can be supplied to electromagnetic hydraulic valve 70R. Therefore, the operator can open and close the electromagnetic hydraulic valve 70R, supply hydraulic pressure to the turning hydraulic cylinder 46b with the hydraulic lever, and extend or fold the right working body 10R to move the working machine 10 from the stored state. It can be in the deployed state or from the deployed state to the stowed state.

As described above, the work machine in the present invention includes an electromagnetic hydraulic valve and a rotary hydraulic pump, and the connector shape of each harness of the work machine is the same. Even in an emergency when the means that can operate the object to be operated becomes inoperable, the harness and connector to which power is directly supplied without going through the control box can be replaced with the electromagnetic hydraulic valve to which power is no longer supplied. It can be connected to the harness and connector used for opening and closing. Therefore, in the work machine of the present invention, even in an emergency when the control box or means for wirelessly or wiredly operating the object to be operated becomes inoperable, the operator can supply electric power to the electromagnetic hydraulic valve. Since the hydraulic pressure can be supplied, the electromagnetic hydraulic valve can be opened and closed to connect the hydraulic pressure supply path of the hydraulic cylinder for rotation. can. In addition, the work machine according to the present invention can control power supply between harnesses having different uses, so there is no need to provide a special harness. Emergencies can be dealt with without increasing manufacturing costs. Therefore, according to the present invention, even when the control box or means for wirelessly or wiredly operating the target to be operated becomes inoperable, the electromagnetic hydraulic valve provided in the work machine is opened and closed, and the hydraulic cylinder for rotation is operated. It is possible to provide a working machine that can turn the working body into the retracted state or the expanded state.

<Embodiment 2>
Another configuration of the power supply path of the working machine 10 according to an embodiment of the present invention will be described in detail below with reference to FIGS. 8 and 9. FIG. FIG. 8 is a diagram showing part of a path for supplying power in an embodiment of the present invention when a control box or a means capable of wirelessly or wiredly operating an object to be operated is operable. FIG. 9 is a diagram showing part of a path for supplying power in an embodiment of the present invention when a control box or means capable of wirelessly or wiredly operating an object to be operated is inoperable. Note that descriptions of the contents described with reference to FIGS. 1 to 7 may be omitted here.

8 and 9 differ from FIGS. 3 and 4 in that, for example, a plurality of connectors are replaced with a plurality of switches and a switch control mechanism 90. FIG. Other configurations are the same between FIGS. 8 and 9, and FIGS. 3 and 4, so descriptions thereof are omitted here.

A work machine according to an embodiment of the present invention in which a control box or an operation unit is operable will be described with reference to FIG.

The switch control mechanism 90 has an input terminal 92a, an input terminal 92b, an input terminal 92c, an input mechanism 100, an output terminal 94a, an output terminal 94b, and an output terminal 94c.

The input terminal 92a is connected to the switch 96a. The input terminal 92b is connected to the switch 96b. The input terminal 92c is connected to the switch 96c. The switch 96a contacts the wiring connected to the output terminal 94a and connects the input terminal 92a and the output terminal 94a. The switch 96b contacts the wiring connected to the output terminal 94b and connects the input terminal 92b and the output terminal 94b. The switch 96c contacts the wiring connected to the output terminal 94c and connects the input terminal 92c and the output terminal 94c. The input mechanism 100 is connected to the switches 96b and 96c by a connecting member 98. As shown in FIG. The input mechanism 100 allows the switches 96b and 96c to be controlled in tandem. That is, by controlling the switch 96b and the switch 96c in conjunction with each other, the switch 96b connecting the input terminal 92b and the output terminal 94b is disconnected from the output terminal 94b, and the switch 96c connecting the input terminal 92c and the output terminal 94c is disconnected. It is possible to disconnect from the output terminal 94c and connect the input terminal 92c and the output terminal 94b by a switch 96c. The input mechanism 100 can apply buttons or toggle switches, for example.

Here, the harness 66a, the harness 66aa, the input terminal 92c, the switch 96c, the output terminal 94c, the harness 68, the external relay 78, and the Power is supplied via harness 69 .

If the control box or the operation unit is operable, the operator operates the operation unit to send an operation signal to a receiving unit (not shown) of the control box 13a, and the electromagnetic hydraulic valve 70L is supplied with electric power via a harness 66a, a harness 66ab, a control box 13a, a harness 60b, an input terminal 92b, a switch 96b, and an output terminal 94b. Electric power is supplied to the electromagnetic hydraulic valve 70R via the control box 13a, the harness 60a, the input terminal 92a, the switch 96a, and the output terminal 94a. Other operations when the control box or the operation unit is operable are the same as those in the first embodiment, and thus descriptions thereof are omitted here.

A work machine according to an embodiment of the present invention when the control box or the operation unit cannot be operated will be described with reference to FIG. 9 differs from FIG. 8 in connection of the switches 96b and 96c. In the description of FIG. 9, the description similar to that of FIG. 8 is omitted.

As shown in FIG. 9, when the control box or the operation unit cannot be operated, the operator operates the input mechanism 100 to disconnect the switch 96b from the wiring connected to the output terminal 94b, and the switch 96c. It can be connected to the wiring connected to the output terminal 94b. That is, by operating the input mechanism 100 and interlockingly controlling the switch 96b and the switch 96c, the switch 96b connecting the input terminal 92b and the output terminal 94b is disconnected from the output terminal 94b, and the input terminal 92c and the output terminal 94c are connected. and the output terminal 94c, and the switch 96c connects the input terminal 92c and the output terminal 94b. That is, by operating the input mechanism 100, the operator can switch between the connection between the input terminal 92b and the output terminal 94b and the connection between the input terminal 92c and the output terminal 94b. As described above, power is supplied to the switch 96c not through the control box 13a, but through the harness 66a, the harness 66aa, the input terminal 92c, the switch 96c, and the output terminal 94c. Therefore, the operator can operate the input mechanism 100 to connect the switch 96c to the output terminal 94b, thereby supplying power to the electromagnetic hydraulic valve 70L. Other operations when the control box or the operation unit cannot be operated are the same as those in the first embodiment, so descriptions thereof are omitted here.

As described above, since the work machine in the present invention includes the electromagnetic hydraulic valve, the hydraulic pump for rotation, and the switch control mechanism, the control box or the means capable of operating the object to be operated wirelessly or by wire. Even in an emergency when the control box becomes inoperable, the switch control mechanism can connect the path to which power is supplied without going through the control box and the path to which power is no longer supplied from the control box. It is also possible to provide a working machine that can open and close an electromagnetic hydraulic valve provided in the working machine, rotate a hydraulic cylinder for rotation, and put the working body into the stowed state or the unfolded state.

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

It should be noted that the present invention is not limited to the above embodiments, and can be modified as appropriate without departing from the scope of the invention.

10: working machine, 10C: central working body, 10L: left working body, 10R: right working body, 12: top mast, 13: control box cover, 13a: control box, 14: lower link connecting portion, 16: input shaft , 18: support frame, 20C: transmission frame (chain case), 20L: transmission frame (chain case), 20R: transmission frame (chain case), 22: gear box, 24C: central shield cover, 24L: left shield cover, 24R: Right shield cover, 25C: Central mulching motor, 25L: Left mulching motor, 25R: Right mulching motor, 26C: Tilling rotor, 26L: Tilling rotor, 26La: Rotary shaft, 26Lb: Tilling claw, 28C: First central leveling body, 28Ca: drive motor unit, 28L: first left side leveling body, 28R: first right side leveling body, 30C: second central leveling body, 30L: second left side leveling body, 30R: second right side leveling body, 31a: Apron Control Mechanism 31b: Apron Control Mechanism 32C: Central Leveler Control Mechanism 32L: Left Leveler Control Mechanism 32R: Right Leveler Control Mechanism 34L: Left Extension Leveling Body Rotation Mechanism 34La: Drive Motor Unit 34Lb: Rotation Moving arm 34Lc: Connection wire 34R: Right side extension ground leveling body rotating mechanism 36L: Left side extension ground leveling body 36R: Right side extension ground leveling body 38L: Extension ground leveling body connection part 38R: Extension ground leveling body connection part 40Ca: Central shovel plate 40Cb: Central shovel plate 40L: Left shovel plate 40R: Right shovel plate 44a: Work body rotation mechanism 44b: Work body rotation mechanism 46a: Hydraulic cylinder for rotation 46b: Hydraulic pressure for rotation Cylinder 48a: First connecting portion 48b: First connecting portion 50a: Second connecting portion 50b: Second connecting portion 60a: Harness 60b: Harness 62a: Harness 62b: Harness 66a: Harness 66aa: harness, 66ab: harness, 67: harness, 68: harness, 69: harness, 70: hydraulic valve assembly, 70L: electromagnetic hydraulic valve, 70R: electromagnetic hydraulic valve, 72a: hydraulic hose, 72aa: hydraulic hose, 72ab: hydraulic hose, 72b: hydraulic hose, 72ba: hydraulic hose, 72bb: hydraulic hose, 78: external relay, 80a: connector, 80b: connector, 82a: connector, 82b: connector, 86: connector, 88: connector, 90 : switch control mechanism 92a: input terminal 92b: input terminal 92c: input terminal 94a: output terminal 94 b: output terminal, 94c: output terminal, 96a: switch, 96b: switch, 96c: switch, 98: connecting member, 100: input mechanism, 200: running body, 210: battery

Claims (9)

a first harness having a first connecting portion at one end and being supplied with electric power at the other end ;
One end has a second connection portion connected to the first connection portion, and the other end is connected to an electromagnetic hydraulic valve for controlling the opening and closing of a path for supplying hydraulic pressure to the hydraulic cylinder for rotation. a second harness for supplying electric power of to the electromagnetic hydraulic valve ;
a third harness having a third connection portion at one end and being supplied with power at the other end;
a fourth harness for supplying electric power to a drive unit for driving the work machine, the fourth harness having a fourth connection portion connected to the third connection portion at one end;
has
When power is not supplied to the other end of the first harness, the second connection portion is disconnected from the first connection portion, the third connection portion is disconnected from the fourth harness, and the third connection portion is disconnected from the first connection portion. and the second connection portion are connected to each other, whereby electric power is supplied to the electromagnetic hydraulic valve from the other end of the third harness. The first connecting portion, the second connecting portion, the third connecting portion, and the fourth connecting portion are connectors, and the shape of the connector of the first connecting portion and the shape of the connector of the third connecting portion The working machine according to claim 1, wherein and are the same. The working machine according to claim 1 or 2, wherein the working body is folded by rotating the working body by the action of the rotating hydraulic cylinder. The other end of the fourth harness is connected to an external relay that controls power supply to the drive unit ,
4. Electric power is supplied from the other end of the third harness to the drive section by the external relay when the third connection section and the fourth connection section are connected. The work machine according to any one of 1. a first harness having a first connecting portion at one end and being supplied with electric power at the other end ;
One end has a second connection portion connected to the first connection portion, and the other end is connected to a first electromagnetic hydraulic valve for controlling opening and closing of a path for supplying hydraulic pressure to the first rotary hydraulic cylinder. , a second harness that supplies power from the first harness to the first electromagnetic hydraulic valve ;
a third harness having a third connection portion at one end and being supplied with power at the other end;
a fourth harness having a fourth connection portion at one end and being supplied with electric power at the other end ;
One end has a fifth connection portion connected to the fourth connection portion, and the other end is connected to a second electromagnetic hydraulic valve for controlling opening and closing of a path for supplying hydraulic pressure to the second hydraulic cylinder for rotation. , a fifth harness for supplying power from the fourth harness to the second electromagnetic hydraulic valve ;
a sixth harness having a sixth connection portion connected to the third connection portion at one end for supplying electric power to a driving portion for driving the working machine;
has
When power is not supplied to the other end of the first harness, the second connection portion is disconnected from the first connection portion, the third connection portion is disconnected from the sixth connection portion, and the second connection portion is disconnected from the sixth connection portion. Electric power is supplied from the other end of the third harness to the first electromagnetic hydraulic valve by connecting the connecting portion and the third connecting portion,
When power is not supplied to the other end of the fourth harness, the fifth connection portion is disconnected from the fourth connection portion, the third connection portion is disconnected from the sixth connection portion, and the fifth connection is disconnected. power is supplied from the other end of the third harness to the second electromagnetic hydraulic valve by connecting the portion and the third connection portion. The first connecting portion, the second connecting portion, the third connecting portion, the fourth connecting portion, the fifth connecting portion, and the sixth connecting portion are connectors, and the connector of the first connecting portion is The shape, the shape of the connector of the third connection portion, and the shape of the connector of the fourth connection portion are the same, and the shape of the connector of the second connection portion and the shape of the connector of the fifth connection portion are the same. 6. The working machine according to claim 5, wherein and are the same. By rotating the first working body by the action of the first electromagnetic hydraulic valve,
The first working body is in a folded state,
By rotating the second working body by the action of the second electromagnetic hydraulic valve,
the second working body is in a folded state;
The working machine according to claim 5 or 6. The other end of the sixth harness is connected to an external relay that controls power supply to the drive unit ,
When the third connection portion and the sixth connection portion are connected , power is supplied from the other end of the sixth harness to the driving portion by the external relay ,
The work machine according to any one of claims 5 to 7. the first connection portion and the second connection portion are connected by a first switch connected to the first connection portion;
By disconnecting the first switch from the second connection portion and connecting the second switch connected to the third connection portion to the second connection portion, the first connection portion and the second connection portion are connected to each other. and the connection between the third connection portion and the second connection portion can be switched,
The working machine according to claim 1 or 5.

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