JP2011217742A - Power supply system of agricultural machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a power supply system of agricultural machines dispensing with mounting/demounting of a harness for power supply when mounting/demounting a working machine, which is mounted on a tractor for performing agricultural work, with respect to the tractor.SOLUTION: This power supply system of agricultural machines includes: the working machine 2 that is mounted on the tractor 1 for performing the agricultural work and is mountable/demountable with respect to the tractor 1; a power transmission system 15 that is installed in the side of the tractor 1 and connected to a power supply 11 provided in the tractor 1; a transmission device 16 that is installed in the side of the tractor 1 and connected to the power transmission system 15; a receiving device 23 that is installed in the working machine 2; a power receiving system 22 that is installed in the working machine 2 and connected to the receiving device 23; and an output device 80 that is installed in the working machine 2 and operates by the power transmitted from the power receiving system 22. The power is wirelessly transmitted between the transmission device 16 and the receiving device 23, and the power transmission system 15 and the power receiving system 22 convert the power for the wireless power transmission.

Description

  The present invention relates to a power supply system for agricultural machines, and more particularly, to a power supply system for agricultural machines that eliminates the need for attaching and removing a power supply harness when a work machine that is attached to a tractor and performs farm work is detached from the tractor. .

  In a work machine that is attached to a tractor and performs farm work, a battery installed on the tractor side is often used as a power source for an actuator or the like of the work machine. At this time, the battery on the tractor side was supplied via a harness.

  On the other hand, the work machine performs the farm work by replacing another type of work machine with the tractor according to the contents of the farm work. For this reason, in many cases, the harness that connects the battery and the work machine disposed on the tractor is detachable when a connector is provided on the way and the work machine is replaced. For example, Patent Document 1 describes an example of a connector that connects a harness from the tractor side and a harness from the work machine side.

  Further, a specific example of a conventional connector is shown in FIGS. FIG. 14 shows a side view, where (a) shows a state before connection, and (b) shows a state after connection. FIG. 15 shows a front view of the connection surface side, where (a) shows a female connector, and (b) shows a male connector. As shown in the drawing, the insertion part 221 of the male connector 220 is inserted into the recess 211 of the female connector 210. Then, the two plugs 212 of the female connector 210 respectively connected to the minus wiring 213a and the plus wiring 213b are connected to the two insertion holes 222 of the male connector 220 respectively connected to the minus wiring 223a and the plus wiring 223b. Once inserted, these two connectors (210, 220) are connected. The plug 212 is disposed in the recess 211, and the insertion port 222 is disposed from the distal end of the insertion portion 221 toward the inside. In this way, the insertion portion 221 is inserted into the concave portion 211 so that the connection can be ensured.

JP 2009-232796 A

  When the operator replaces the work machine with the tractor, remove the connector between the tractor and the work machine, remove the work machine, install another work machine, and connect the other work machine's connector to the tractor side. It is necessary to connect with the connector from. This takes a lot of work because it is necessary to get off the tractor once for each desorption. Furthermore, forgetting to remove this connector and removing the work implement from the tractor may cause breakage or damage to the harness. In addition, since the agricultural machine is mainly used outdoors, there is a problem of flooding at the connector part that can be removed.

  In view of the above problems, the present invention provides a power supply system for an agricultural machine that eliminates the need for attaching and removing a harness for supplying electric power when the work machine that is attached to the tractor and performs agricultural work is detached from the tractor. With the goal.

  In order to achieve the above object, a power supply system for a farm machine according to the present invention is connected to a work machine that is attached to a tractor to perform farm work and is detachable from the tractor, and a power source that is installed on the tractor side and has in the tractor. A power transmission system; a transmission device installed on the tractor side and connected to the power transmission system; a reception device installed on the work machine; a power reception system installed on the work machine and connected to the reception device; An output device that is installed in a work machine and operates by power transmitted from the power receiving system, wherein power is transmitted wirelessly between the transmitting device and the receiving device, and the power transmitting system and the power receiving system are wirelessly connected. It is characterized by converting power for power transmission.

Furthermore, the power supply system for a farm machine according to the present invention is characterized in that at least one of the transmission device and the power transmission system and the combination of the reception device and the power reception system is integrally configured.
Furthermore, the power supply system for a farm work machine according to the present invention has a power storage device that is installed in the work machine and stores power from the power receiving system, and the power stored in the output device is supplied from the power storage device. To do.
Furthermore, the power supply system for a farm work machine according to the present invention includes a wireless transmission unit disposed in the tractor, a wireless reception unit that is installed in the work machine and receives a wireless operation signal from the wireless transmission unit, and the work machine. And a control unit that controls the output device based on an operation signal that is installed and received by the wireless reception unit.
Furthermore, in the power supply system for agricultural machines according to the present invention, the power source is a battery included in a tractor, and the power transmission system is connected to the battery.
Furthermore, in the power supply system for agricultural machinery according to the present invention, the power source is an external power source of a tractor to which power is supplied from a battery of the tractor via a tractor engine start switch, and the power transmission system includes the external power source and the power source. It is connected.
Furthermore, in the power supply system for a farm work machine according to the present invention, the transmission device is provided in the vicinity of a coupling device that is provided at a rear portion of the tractor and that can be attached to and detached from the work machine, and the reception device is provided in the work machine. It is arrange | positioned in the vicinity of the coupling device for attaching / detaching with a coupling device.

Furthermore, the power supply system for a farm machine according to the present invention further includes a guide inclined surface that is inclined outward from the periphery of one of the transmitting device and the receiving device toward the front and guides the other device to a facing position. It has the guide member which has, It is characterized by the above-mentioned.
Furthermore, in the power feeding system for a farm machine according to the present invention, the guide inclined surface has a cylindrical shape whose diameter increases toward the tip.
Furthermore, the power feeding system for agricultural machines according to the present invention is characterized in that the guide inclined surface is a plate-like member projecting forward with a certain angle outward.

  ADVANTAGE OF THE INVENTION According to this invention, when attaching / detaching the working machine which attaches | installs to a tractor and performs farming work from a tractor, attachment and removal of the harness for electric power feeding become unnecessary.

It is a whole lineblock diagram in the electric power feeding system of the agricultural machine of Example 1. FIG. It is a front view which shows an example of the working machine with which the electric power feeding system of the agricultural working machine of this invention is applied. It is a top view which shows an example of the working machine with which the electric power feeding system of the agricultural working machine of this invention is applied. It is a side view which shows an example of the state which mounted | wore the tractor with which the electric power feeding system of the agricultural working machine of this invention is applied. It is the top view which showed an example of the relationship between a connection apparatus and a working machine. It is an enlarged view of a connecting device, (a) is a side view, (b) is a front view. It is a whole block diagram in the electric power feeding system of the agricultural machine of Example 2. FIG. It is a whole block diagram in the electric power feeding system of the agricultural machine of Example 3. FIG. It is a whole block diagram in the electric power feeding system of the agricultural machine of Example 4. FIG. 10 is a perspective view illustrating a space between a transmitting device and a receiving device according to a fifth embodiment. FIG. 10 is a side view illustrating a space between a transmission device and a reception device of Example 6. It is a front view of the guide member of Example 6. FIG. 10 is a side view showing a space between a transmitting device and a receiving device of Example 7. It is a side view which shows an example of the conventional connector. (A) shows a state before connection, and (b) shows a state after connection. It is a front view by the side of the connection surface which shows an example of the conventional connector. (A) shows a female connector, (b) shows a male connector.

  A mode for carrying out the present invention will be described.

  1 is an overall configuration diagram of a power feeding system for an agricultural machine according to a first embodiment. A work machine 2 is attached to the rear portion of the tractor 1. The work machine 2 performs farm work by using PTO power from the tractor. The tractor 1 includes a wireless transmission unit 10, a tractor battery 11, an external power supply harness 12, a power transmission system 15, and a transmission device 16. The work machine 2 includes a wireless reception unit 20, a control unit 21, a power reception system 22, a reception device 23, and an actuator 80 that is an output device.

  The wireless transmission unit 10 is a device that can wirelessly transmit information. By integrating with an operation unit having an operation switch or the like, information when the operator operates the operation switch is transmitted to the wireless reception unit 20 by wireless transmission. Note that the operation unit and the transmission unit may be separated through wiring or the like.

  The tractor battery 11 is installed in the tractor 1 and is a power source that can supply necessary electricity to the tractor 1. The external power supply harness 12 is a harness (wiring) having one end connected to the tractor battery 11 and the other end serving as a connector of the connection portion 12a. Thereby, only when the switch 13 is turned on, the power of the tractor battery 11 is supplied to the external power supply connection portion 12a side. The switch 13 can be shared with the engine start switch of the tractor 1. For example, the switch 13 may be configured as a key switch that is turned on when a key for engine start is rotated. As a result, power can be supplied when the key switch (engine start switch) of the tractor is ON, and the connecting portion 12a can be connected to various devices as an external power source. The shape of the connection part 12a can be made into the connector shape prescribed | regulated by the Nichiko standard, for example. Since the external power source of the tractor is supplied with power to the external power source connection portion 12a only when the switch 13 of the tractor is ON, it is possible to prevent wasteful power consumption when the tractor 1 is not performing work.

  The power transmission system 15 and the transmission device 16 are connected via a connection harness (transmission side) 17. The power transmission system 15 can be connected to the external power supply harness 12 (the connection part 12a thereof), and performs conversion for transmitting power from the external power supply from the transmission device 16. And it transmits to the receiving device 23 by the side of the working machine 2 from the transmission device 16 as the energy transmitted in space.

  The power receiving system 22 and the receiving device 23 are connected via a connection harness (receiving side) 24. The energy received by the receiving device 23 is transmitted as electrical energy to the power receiving system 22, converted into standard power used by the actuator 80 or the like by the power receiving system 22, and sent to the control unit 21.

  A wireless power feeding method performed between the transmission device 16 and the reception device 23 will be described. Examples of wireless power feeding include “magnetic resonance”, “electromagnetic induction”, and “microwave / laser light”. The “electromagnetic induction” method is a method in which electric power is transmitted from the primary coil to the secondary coil by electromagnetic induction. Although the separation distance is short, relatively large electric power can be transmitted and it has been put into practical use in various devices. Therefore, there is a merit that the cost is low. The “magnetic resonance” method is a method of transmitting electric power using resonance, and has a relatively long separation distance of about 10 to 50 cm. Furthermore, even if the power of 10W to 1KW can be sent and the transmission / reception position (angle and deviation) is considerable, the efficiency does not decrease much, but there is a property that the efficiency decreases proportionally as the distance changes. The “microwave / laser light (wireless)” system performs power transmission using microwaves or laser light and has a separation distance of, for example, about 1 to 10 cm, but has a property that power that can be transmitted is small.

  When these methods are applied, the power transmission system 15, the transmission device 16, the power reception system 22, and the reception device 23 are each configured to match these methods. For example, in the case of the “magnetic resonance” method, the transmission device 16 and the reception device 23 are configured by coils, the power transmission system 15 is a system for generating a constant frequency, and the power reception system 22 is rectified to be a control unit. Power is supplied to 21. In addition, in the case of the “electromagnetic induction” method, a system in which the transmission device 16 is a primary side coil and the reception device 23 is a secondary side coil, the power transmission system 15 generates alternating current, and the power reception system 22 rectifies the system.

  Information (operation signal) by the operation of the operator's operation unit on the tractor 1 side is transmitted from the wireless transmission unit 10 to the wireless reception unit 20. Then, the control unit 21 controls the actuator 80 based on the information. Electric power necessary for the actuator 80, the control unit 21, and the wireless reception unit 20 at this time is transmitted from the power reception system 22. The wireless reception unit 20 has a transmission function and causes the wireless transmission unit 10 to transmit information and the like obtained from the control unit 21. The wireless transmission unit 10 has a reception function and information on the work machine 2 side from the wireless reception unit 20. May be received and displayed.

  The control unit 21 controls the actuator 80 based on the operation signal received by the wireless reception unit 20. The control unit 21 is configured by an electronic device or the like necessary for control, and can be stored in the box as a control box and can be made independent. On the other hand, it may be configured integrally with the wireless receiving unit 20 and the power receiving system 22.

  The actuator 80 is installed in the work machine, and a specific example will be described later. Note that the actuator 80 may be an LED, a buzzer, a sensor, or the like as long as it uses power even if it is an output device other than the actuator.

  FIG. 2 is a front view showing an example of a work machine to which the power supply system for agricultural work machine of the present invention is applied. FIG. 3 is a plan view showing an example of a working machine to which the agricultural machine power feeding system of the present invention is applied. 2 and 3 is a scraper 50 having a folding mechanism. The input shaft 51 side is attached to the tractor 1, and the scraper claw is rotated by rotating the scraper claw within the cover 52 and the flat plate 53. Do.

  The electro-hydraulic cylinder 56 can cause the rotation mechanism 57 to act to fold the side working portion 55 upward (as shown on the left side in FIG. 2) and shorten the overall width of the scraper 50 by expanding and contracting the cylinder. . The extension rake opening / closing device 60 rotates the extension rake 61 left and right around the rotation axis 61a via the control bar 62 and the wire 63 by rotating the internal motor, and uses the extension rake 61 or not. Can be selected. The earthing unit 66 can adjust the earthing by controlling the vertical movement of the rake 65 through the earthing part 67 and the like by the rotation of an internal motor.

  The electric hydraulic cylinder 56, the extension rake opening / closing device 60 (motor), and the earthing unit 66 (motor) can be operated as the actuator 80, and efficient farming can be performed.

  FIG. 4 is a side view showing an example of a state in which the work implement 2 (50) is mounted on the tractor 1 to which the power supply system for agricultural implements of the present invention is applied. FIG. 5 is a plan view showing an example of the relationship between the coupling device 30 and the work machine 2 (50). FIG. 6 is an enlarged view of the coupling device 30. FIG. 4 shows the tire 3 of the tractor 1 and a front view thereof is omitted.

  When the connecting device 30 is attached to the tractor 1 and the work implement 2 is mounted, the operator can detach the work implement 2 without getting off the tractor 1. Here, the case where the electric power feeding system of the agricultural machine of this invention is applied to the connection apparatus 30 grade | etc., Is demonstrated.

  The coupling device 30 has a top hook 31 having an upper portion opened at the upper center, and has hooks 44 attached to the side plates 34 on the left and right sides of the lower portion. The top hook 31 and the side plate 34 are joined by a main pipe 33, and the left and right side plates 34 are joined by a connecting pipe 36. A joint fixing plate 37 for attaching a joint is joined to the center of the connecting pipe 36. A handle 41 is installed on the side of the top hook 31, and when the handle 41 is pulled to the tractor side, the hook 44 rotates downward about the rotation shaft 44a via the link mechanism 42 and the connecting rod 43. The entrance of the groove 38 in the side plate 34 is opened. When the handle 41 is returned (pushed), the hook 44 is rotated by the force of the torsion spring 45 provided between the side plate 34 and the hook 44 to close the inlet of the groove 38. Further, when the lock pin 46 is turned, the handle is locked and cannot be pulled. A mounting hole 32 is provided on the back surface of the hook 44, and a mounting pin 35 is provided on the side plate 34.

  When the tip of the top link 5 of the tractor 1 is attached to the attachment hole 32 of the connecting device 30 and the tip of the lower link 6 of the tractor 1 is attached to the attachment pin 35 of the connecting device 30, the connecting device 30 is attached to the tractor 1.

  On the other hand, on the work machine 2 side, a connecting tool (mast 71, hitch 73) for mounting on the connecting device 30 is provided. The mast 71 is attached to the upper part of the mission case 75 provided with the input shaft 51, and the left and right hitches 73 are joined to the frame pipes 76 at both ends of the mission case 75, respectively. It is attached to the attached mounting plate 77. A top pin 72 is provided at the tip of the mast 71, and a lower pin 74 is provided at the tip of the hitch 73.

  With the connecting device 30 attached to the tractor 1, the operator pulls the handle 41, operates the lower link 6 at the driver's seat of the tractor 1 to raise the connecting device 30, and attaches the top hook 31 from the lower side to the top pin 31. Hook to 72. Then, the lower pin 74 enters the groove 38 and the tip of the joint 7 is also inserted into the input shaft 51. Thereby, the work machine 2 is supported at three points. When the handle 41 is returned (pushed) and locked with the lock pin 46, the mounting is completed. Removal can be performed by unlocking the lock pin 46, pulling the handle 41, and lowering the connecting device 30.

  At this time, when the transmission device 16 is attached to the coupling device 30 side, the reception device 23 is installed on the scraper 50 (work machine 2) side, and the work machine 2 is attached to the coupling device 30, the transmission device 16 and the reception device are received. If the device 23 is positioned so that power can be supplied wirelessly, the operator does not need to get off the tractor 1 and connect for power supply when detaching the work implement 2 from the tractor 1. Furthermore, if the operation of the actuator 80 is performed wirelessly using the wireless transmission unit 10, the operator does not need to perform wiring work of the harness for the operation, and can quickly perform the farm work. The transmission device 16 and the reception device 23 are attached by, for example, attaching the transmission device 16 by attaching an attachment plate from the main pipe 33 or the connection pipe 36 of the connection device 30, or attaching the reception device 23 from the mast 71 or the hitch 73. This can be done by taking out and attaching the plate. Further, if an automatic device having other functions is attached to the left side from the center O in FIG. 5, the transmitting device 16 may be attached to the right side from the center O in FIG. Since the transmission device 16 and the reception device 23 are separate from the power transmission system 15 and the power reception system 22, it is not necessary to make a large space near the attachment. And since it is not necessary to connect a connector like a prior art example, there is no contact and the problem of flooding does not arise.

  It has been described that the connection between the power transmission system 15 and the tractor battery 11 is made by the external power supply harness 12 with the switch 13 interposed therebetween, but in addition to this, when the tractor 1 does not have an external power supply mechanism. The power transmission system 15 and the tractor battery 11 may be directly connected by a harness that does not intervene.

  FIG. 7 is an overall configuration diagram of the power feeding system for the agricultural machine according to the second embodiment. In the second embodiment, differences from the first embodiment will be described, and the same portions are denoted by the same reference numerals.

  In the second embodiment, a power storage device 25 is connected between the power receiving system 22 and the control unit 21 in the work machine 2. The electric power supplied through the transmission device 16 and the reception device 23 is temporarily stored in the power storage device 25. The power supplied through the transmitting device 16 and the receiving device 23 is limited, and there are cases where the power required by the actuator 80 or the like cannot be supplied at one time. Even in this case, once electricity is stored in the power storage device 25, it is possible to cope with a case where a large output is required by the actuator 80 or the like, and the range of application is widened. At this time, even if the power converted by the power receiving system 22 is lower than the standard power used by the actuator 80 or the like, it is sufficient if the power can be charged in the power storage device 25.

  The power storage device 25 is a device having a power storage function, and a battery constituted by a nickel hydride battery, a lead storage battery, a lithium ion battery, a lithium battery, or the like, a capacitor, or the like can be applied.

  FIG. 8 is an overall configuration diagram of the power feeding system for the agricultural machine according to the third embodiment. In the third embodiment, points different from the second embodiment will be described, and the same portions are denoted by the same reference numerals.

  In the third embodiment, the branch harness 18 is interposed between the connection portion 12 a of the external power supply harness 12 and the power transmission system 15 on the tractor 1 side. The connection part 12a of the external power supply harness 12 and the connection part 18a of the branch harness 18 are connected, one connection part 18b of the branch harness 18 branched therefrom is connected to the power transmission system 15, and the other connection part 18c is connected to the wireless transmission part. Connect to 10. Thereby, the power of the wireless transmission unit 10 is also supplied from the external power supply, and the power supply of the wireless transmission unit 10 can be secured.

  FIG. 9 is an overall configuration diagram of the power feeding system for the agricultural machine according to the fourth embodiment. In the fourth embodiment, differences from the first embodiment will be described, and the same portions are denoted by the same reference numerals.

  In the fourth embodiment, the power transmission system 15 and the transmission device 16 in the first embodiment are integrated as a power transmission device 19, and the power reception system 22 and the reception device 23 in the first embodiment are integrated as a power reception device 26. That is, the power transmission device 19 includes the power transmission system 15 and the transmission device 16, and the power reception device 26 includes the power reception system 22 and the reception device 23. The power transmission device 19 is connected to one end of the power transmission side harness 27, and the connection portion 27 a at the other end of the power transmission side harness 27 is connected to the connection portion 12 a of the external power supply harness 12. On the other hand, the power receiving device 26 is directly connected to the control unit 21 via the power receiving side harness 28. Since these can be manufactured as a single unit, the cost can be reduced. This is particularly effective in a system that is expected to be miniaturized, such as “electromagnetic induction”. The relationship between the mounting position of the transmission device built in the power transmission device 19 and the reception device built in the power reception device 26 is the same as in the first embodiment. The power transmission device 19 and the power reception device 26 can be similarly applied to the second and third embodiments. Further, only one of the power transmission device 19 and the power reception device 26 may be applied and integrated.

  FIG. 10 is a perspective view illustrating the space between the transmission device 16 and the reception device 23 according to the fifth embodiment.

  A first guide member 100 is attached around the receiving device 23. The first guide member 100 has a first guide inclined surface 101 in which one end is a cylindrical shape widening toward the end and the diameter of the cylindrical portion increases from the front end portion 102 toward the rear end portion 103. The receiving device 23 according to the fifth embodiment has a cylindrical outer shape and is disposed inside the first guide member 100.

  On the other hand, the second guide member 110 is attached to the distal end side of the transmission device 16. The second guide member 110 also has a cylindrical shape with one end diverging, and the second guide inclined surface 111 whose diameter increases from the rear end bottom 113 on the transmission device 16 side toward the front end opening 112. have. The inclination angle of the second guide inclined surface 111 is the same as or larger than the inclination angle of the first guide inclined surface 101.

  With these configurations, when the receiving device 23 is brought close to the transmitting device 16, even if the position of the receiving device 23 is slightly deviated, the distal end portion 102 of the first guide member 100 or the first guide inclined surface 101 becomes the second guide member. The second guide inclined surface 111 of 110 is guided in contact with the inner side surface. For this reason, it becomes possible to arrange the end face of the transmitting device 16 and the end face of the receiving device 23 so as to face each other reliably. And the rear-end bottom part 113 of the 2nd guide member 110 and the front-end | tip part 102 of the 1st guide member 100 enable supply of more reliable electric power in the near position.

  The first guide member 100 may be provided in the transmission device 16 and the second guide member 110 may be provided in the reception device 23.

  FIG. 11 is a side view illustrating the space between the transmission device 16 and the reception device 23 according to the sixth embodiment. FIG. 12 is a front view of the guide member 140 according to the sixth embodiment.

  The guide member 140 includes a body 141 that is a prism with a hollow inside, and a body 141 that is continuous from the sides of each end of the body 141 and has a certain angle outward. There are four protruding plate-like guide inclined surfaces 142.

  The transmission device 16 according to the sixth embodiment has a prismatic shape, and the body 141 of the guide member 140 is mounted around the transmission device 16. At this time, the guide inclined surface 142 is attached to the distal end side of the transmission device 16.

  The receiving device 23 according to the sixth embodiment also has a prismatic shape, and may have a shape with a rounded corner (23a) to facilitate guidance.

  With these configurations, when the receiving device 23 is brought close to the transmitting device 16, the distal end portion of the receiving device 23 is guided in contact with the inner side surface of the guide inclined surface 142 of the guide member 140 even if the position is slightly shifted. . As a result, the transmitter device 16 can be disposed close to a position where the transmitter device 16 is in contact with the receiver device 23, and more reliable power supply is possible at a close position.

  The guide member 140 may be provided on the receiving device 23 side.

  FIG. 13 is a side view illustrating the space between the transmission device 16 and the reception device 23 according to the seventh embodiment. The seventh embodiment shows a configuration in which the transmission device 16 is connected to the conventional female connector 210 shown in FIGS.

  The transmission device 16 according to the seventh embodiment has an insertion portion 16 a attached to the connection harness 17 side, and can be inserted into the recess 211 of the female connector 210. The configuration of the insertion portion 16a is the same as that of the conventional insertion portion 221.

  With these configurations, it is possible to attach the transmission device 16 while using the conventional female connector 210 as it is.

  The above Examples 5-7 can be applied to Examples 1-4 as they are. When applied to the fourth embodiment, the transmission device 16 can be applied as the power transmission device 19, and the reception device 23 can be applied as the power reception device 26.

DESCRIPTION OF SYMBOLS 1 Tractor 2 Work implement 10 Wireless transmission part 11 Tractor battery 12 External power supply harness 13 Switch 15 Power transmission system 16 Transmission device 18 Branch harness 19 Power transmission apparatus 20 Wireless reception part 21 Control part 22 Power reception system 23 Reception device 25 Power storage apparatus 26 Power reception apparatus 30 Connecting device 50 Scraper 56 Electric hydraulic cylinder 60 Rake open / close device 66 Earth pulling unit 71 Mast 73 Hitch 80 Actuator 100 First guide member 101 First guide inclined surface 110 Second guide member 111 Second guide inclined surface 140 Guide member 142 Guide Inclined surface 210 Female connector

Claims (10)

Agricultural work that is attached to a tractor to perform farming work, and a detachable work machine, a power transmission system that is installed on the tractor side and connected to a power source of the tractor, and is installed on the tractor side and connected to the power transmission system A transmission device; a receiving device installed in the work machine; a power receiving system installed in the work machine and connected to the receiving device; and an output that is installed in the work machine and is operated by power transmitted from the power receiving system. With equipment,
A power feeding system for agricultural machines, wherein power is transmitted wirelessly between the transmitting device and the receiving device, and the power transmission system and the power receiving system perform power conversion for power transmission wirelessly. In the agricultural machinery power feeding system according to claim 1,
At least one of the transmission device, the power transmission system, and the combination of the reception device and the power reception system is integrally configured. In the agricultural machinery power feeding system according to claim 1 or 2,
A power supply system for an agricultural work machine, comprising: a power storage device that is installed in the work machine and stores power from the power receiving system, and the power stored in the output device is supplied from the power storage device. In the agricultural machinery power supply system according to any one of claims 1 to 3,
A wireless transmission unit disposed in the tractor, a wireless reception unit that is installed in the work machine and receives a wireless operation signal from the wireless transmission unit, and an operation signal that is installed in the work machine and received by the wireless reception unit And a control unit for controlling the output device based on the power supply system for agricultural machines. In the agricultural machinery power supply system according to any one of claims 1 to 4,
The power supply system for an agricultural working machine, wherein the power source is a battery included in a tractor, and the power transmission system is connected to the battery. In the agricultural machinery power supply system according to any one of claims 1 to 4,
The power source is an external power source of a tractor to which power is supplied from a battery of the tractor via a tractor engine start switch, and the power transmission system is connected to the external power source. Power supply system. In the agricultural machinery power supply system according to any one of claims 1 to 6,
The transmission device is installed in the vicinity of a coupling device that is provided at the rear of the tractor and that can be attached to and detached from the work machine,
The power supply system for an agricultural working machine, wherein the receiving device is disposed in the vicinity of a connecting tool provided in the working machine for detaching from the connecting device. In the electric power feeding system of the agricultural machine as described in any one of Claims 1-7,
Agricultural work comprising a guide member having a guide inclined surface that is inclined outward from the periphery of one of the transmitting device and the receiving device toward the front, and guides the other device to an opposing position. Machine power supply system. The power supply system for agricultural machines according to claim 8,
The power supply system for an agricultural machine, wherein the guide inclined surface has a cylindrical shape whose diameter increases toward the tip. The power supply system for agricultural machines according to claim 8,
The power supply system for an agricultural working machine, wherein the guide inclined surface is a plate-like member projecting forward with a certain angle outward.

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