Construction machinery

Abstract

To provide a construction machine that can be equipped with a remote control device while ensuring ease of entry for the driver into the cab and ease of operation of the control devices. [Solution] The hydraulic excavator (construction machine) 1 is equipped with a remote control device 30 that receives remote control signals from the outside and operates the operating device 20 based on the received remote control signals. The remote control device 30 includes an actuator unit 60 that operates the operating device 20, a power tank unit (power source unit) 50 that includes a power source for the actuator unit 60, and a switchboard unit 40 that controls the actuator unit 60 and the power tank unit 50 based on the remote control signals and distributes power to the actuator unit 60 and the power tank unit 50. The switchboard unit 40 and the power tank unit 50 are located outside the cab 5 and around the cab 5, while the actuator unit 60 is located inside the cab 5.

Description

Technical Field

[0001] The present invention relates to a construction machine that can be remotely operated.

Background Art

[0002] Conventionally, technologies related to construction machines that can be remotely operated are known. For example, Patent Document 1 discloses a hydraulic excavator (construction machine) including a seat on which an operator (driver) sits, an operation lever disposed on the side of the seat for controlling the operation amount of the own machine, an operation mechanism for tilting the operation lever based on a remotely given operation command, and a control panel provided on the front side or the rear side of the operation lever.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] In a construction machine as described in Patent Document 1 above, as equipment for remote operation, it is necessary to mount a plurality of units such as an actuator unit (the above operation mechanism, control panel) for operating the own machine, a power source unit including the power source of the actuator unit, and a distribution board unit for distributing and controlling electric power to the actuator unit and the power source unit. As a result, when the driver boards the construction machine and operates it, the space inside the cab where the driver boards becomes cramped, and there is a risk that the ease of boarding by the driver and the operability of the operating device will deteriorate.

[0005] The present invention has been made in view of such problems, and an object thereof is to provide a construction machine capable of mounting a remote operation device while ensuring the ease of boarding by the driver inside the cab and the operability of the operating device.

Means for Solving the Problems

[0006] To achieve the above objective, the present invention provides a construction machine comprising: a drivable body; a work device provided on the body; a cab provided on the body and on which a driver sits; an operating device provided inside the cab for the driver to operate the body and the work device; and a remote control device that receives a remote control signal from the outside and operates the operating device based on the received remote control signal, wherein the remote control device comprises: an actuator unit for operating the operating device; a power source unit including a power source for the actuator unit; and a switchboard unit that controls the actuator unit and the power source unit based on the remote control signal and distributes power to the actuator unit and the power source unit, wherein the switchboard unit and the power source unit are located outside the cab and around the cab, and the actuator unit is located inside the cab. [Effects of the Invention]

[0007] According to the construction machinery of the present invention, it is possible to install a remote control device while ensuring ease of entry for the driver into the cab and operability of the control device. [Brief explanation of the drawing]

[0008] [Figure 1] A side view drawing of a hydraulic excavator. [Figure 2] This is a plan view of a hydraulic excavator. [Figure 3] This is a schematic side view showing the surrounding area and interior of the cab of a hydraulic excavator. [Figure 4] This is a schematic plan view showing the area near the driver's seat inside the cab. [Figure 5] This is a schematic diagram showing the configuration of a remote control device. [Figure 6] This is an explanatory diagram showing other examples of the placement of the control unit. [Modes for carrying out the invention]

[0009] An embodiment of the present invention will be described below with reference to the drawings. In the following description, the forward / backward, left / right, and up / down directions of the machine will be described primarily from the perspective of the operator riding in the construction machine.

[0010] (Hydraulic excavator: construction machinery) Figure 1 is a side view showing the hydraulic excavator 1. Figure 2 is a top view showing the hydraulic excavator 1. The hydraulic excavator 1 according to this embodiment is a construction machine used, for example, for excavating earth and sand. The hydraulic excavator 1 comprises a lower traveling body 2 and an upper rotating body 4 as the machine body, and a working device 10.

[0011] The lower traveling body 2 includes a crawler 3 driven by a travel hydraulic motor (not shown) as a drive device for moving the hydraulic excavator 1. The upper slewing body 4 is rotatably mounted on the lower traveling body 2 and rotates driven by a slewing hydraulic motor (not shown). A cab 5, which constitutes the operator's cabin for the hydraulic excavator 1, is provided at the front of the upper slewing body 4. A machine room 6 is provided at the rear of the upper slewing body 4. The machine room 6 houses the engine (internal combustion engine) as the prime mover and various components that constitute the hydraulic system, such as a hydraulic pump. A counterweight 7, used to maintain the balance of the hydraulic excavator 1 during operation, is provided at the rearmost part of the upper slewing body 4.

[0012] The working device 10 includes a boom 11 that is pivotably attached to the upper slewing body 4, an arm 12 that is pivotably attached to the tip of the boom 11, and a bucket 13 that serves as a working tool and is pivotably attached to the tip of the arm 12. The working device 10 is also provided with a boom cylinder 11a that drives the boom 11 using the hydraulic pressure of the hydraulic fluid discharged from the hydraulic pump, an arm cylinder 12a that drives the arm 12, and a bucket cylinder 13a that drives the bucket 13.

[0013] (Cab) Figure 3 is a schematic side view showing the surroundings and interior of the cab 5 of the hydraulic excavator 1. Figure 4 is a schematic top view showing the vicinity of the driver's seat 8 inside the cab 5. As shown in Figure 3, the cab 5 is equipped with a driver's seat 8, which includes a seat where the driver sits. The seat of the driver's seat 8 is mounted on a floor plate 5F that forms the bottom of the cab 5 via a seat base, a sliding mechanism in the front-rear or up-down direction, and a suspension mechanism that absorbs vibrations. In addition, a passage 5A extending in the left-right direction for the driver to move is provided in front of the driver's seat 8.

[0014] (operating device) Furthermore, as shown in Figures 3 and 4, an operating device 20 for the operator to operate the hydraulic excavator 1 is provided near the driver's seat 8 inside the cab 5. The operating device 20 includes a travel operating device 22 and a work operating device 24.

[0015] The travel control device 22 is an operating device for moving the lower travel body 2. As shown in Figure 3, the travel control device 22 is located in front of the driver's seat 8 in the longitudinal direction of the machine, between the front window 5B of the cab 5 and the passageway 5A. As shown in Figure 4, the travel control device 22 includes two travel pedals 221 and two travel levers 222 that operate in conjunction with each travel pedal 221. The two travel pedals 221 and the two travel levers 222 are configured to control the drive of the crawler 3 of the lower travel body 2 by tilting forward and backward. Each travel pedal 221 is located at a distance that can be operated with the feet of a driver seated in the driver's seat 8 across the passageway 5A, and each travel lever 222 is located at a distance that can be operated with the hands of the same driver. In the following explanation, the driving pedal 221 on the right side as viewed from the driver's perspective will be referred to as "driving pedal 221R", the driving lever 222 on the right side as "driving lever 222R", the driving pedal 221 on the left side as "driving pedal 221L", and the driving lever 222 on the left side as "driving lever 222L".

[0016] The work operating device 24 is an operating device for driving the work device 10 and turning the upper swing body 4. As shown in FIG. 4, the work operating device 24 includes two operating levers 241. Each operating lever 241 is arranged laterally in the left-right direction of the driver's seat 8 and behind the passage 5A. Each operating lever 241 is provided so as to be tiltable forward, backward, left, and right by being manually operated by the driver sitting on the driver's seat 8. Based on the tilt direction and tilt amount (angle) of each operating lever 241, the boom cylinder 11a, arm cylinder 12a, or bucket cylinder 13a is driven to adjust the operating direction, operating speed of the boom 11, arm 12, or bucket 13, or the turning direction and turning speed of the upper swing body 4 with respect to the lower traveling body 2 by the turning hydraulic motor. In the following description, the operating lever 241 on the right side as viewed from the driver is referred to as the "operating lever 241R", and the operating lever 241 on the left side is referred to as the "operating lever 241L".

[0017] (Remote operating device) The hydraulic excavator 1 configured as described above includes a remote operating device 30 that receives a remote operation signal from the outside and operates the operating device 20. FIG. 5 is a schematic configuration diagram showing the remote operating device 30. As shown in the figure, the remote operating device 30 includes a switchboard unit 40, a power tank unit (power source unit) 50, and an actuator unit 60. In FIG. 5, the broken lines connecting the respective components show an example of the electrical connection relationship, and the solid lines connecting the respective components show an example of the connection relationship by pneumatic piping.

[0018] (Switchboard unit) The distribution board unit 40 is a power distribution facility for appropriately distributing the power from a power source 9 such as a battery mounted on the hydraulic excavator 1 to the power tank unit 50 and the actuator unit 60 at a predetermined voltage. Further, the distribution board unit 40 is a control unit that receives a remote operation signal from an external device (not shown) and controls the power tank unit 50 and the actuator unit 60 based on the remote operation signal. The distribution board unit 40 includes, as an example, a power switch 41, an emergency stop device 42, an operation status indicator lamp 43, a voltage conversion circuit 44, a communication device 45, and a controller 46. Each component of the distribution board unit 40 is housed in a housing 400 (Fig. 3).

[0019] The power switch 41 is a switch that can be manually switched by an operator to supply power from the power source 9 to other devices in the distribution board unit 40 and to stop the power supply. The emergency stop device 42 is a device that cuts off the power supply to other devices in the distribution board unit 40 so as to stop the operation of the remote operation device 30 when an emergency stop instruction is input as a remote operation signal from, for example, a remote operator (not shown). The operation status indicator lamp 43 is an indicator lamp such as a lamp that switches the lighting mode according to various operation statuses of the distribution board unit 40.

[0020] The voltage conversion circuit 44 is an electric circuit that appropriately converts (raises or lowers) the power supplied from the power source 9 to an appropriate voltage and supplies it to each device of the distribution board unit 40, the power tank unit 50, and the actuator unit 60. When the power source 9 is an AC power source outside the hydraulic excavator 1, the voltage conversion circuit 44 includes a rectifier that converts AC power into DC power. Power is supplied from the distribution board unit 40 to the power tank unit 50 via a plurality of electric wirings EL1, EL2 described later. Also, power is supplied from the distribution board unit 40 to the actuator unit 60 via a plurality of electric wirings EL3, EL4 described later.

[0021] The communication device 45 communicates wirelessly with an external device via a communication network and receives remote control signals from the external device. The external device is equipped with a remote control terminal (not shown) and generates and transmits the remote control signals in response to the operator's operation of the terminal. The communication device 45 outputs the received remote control signals to the controller 46.

[0022] The controller 46 is a control device that performs overall control of the remote control device 30 and is composed of, for example, a storage device, memory (ROM, RAM, non-volatile RAM, etc.), a central processing unit (CPU), etc. The controller 46 controls the power switch 41, emergency stop device 42, operating status indicator light 43, voltage conversion circuit 44, and communication device 45 of the distribution board unit 40. The controller 46 also generates command signals to drive the power tank unit 50 and the actuator unit 60 in order to operate the hydraulic excavator 1 according to the remote control signals. The generated command signals are output to the power tank unit 50 via multiple electrical wirings EL1 and EL2, and to the actuator unit 60 via multiple electrical wirings EL3 and EL4.

[0023] (Power tank unit) The power tank unit 50 is a power source unit for driving the actuator unit 60. Each component of the power tank unit 50 is housed in a housing 500 (Figure 3). Note that in Figure 5, the electrical connections between the components of the power tank unit 50 are omitted. The power tank unit 50 is equipped with a compressor (air supply source) 51 that draws in air, compresses the drawn-in air, and discharges it to the pneumatic piping AL1. The compressor 51 is fitted with a vibration damping device 52 to suppress vibrations and a heat dissipation device 53 to release the generated heat to the outside.

[0024] The pneumatic piping AL1 includes a pneumatic measuring device 54 for measuring the internal air pressure, a pneumatic regulator 55 which is a valve that can adjust the air pressure, a moisture removal device 56 for removing moisture generated in the air during compression, and an air tank 57 for temporarily storing air. The pneumatic measuring device 54 outputs the measurement results to the controller 46 of the power distribution unit 40. The controller 46 controls each component of the power tank unit 50 based on the measurement results and other factors. As a result, air compressed by the compressor 51 is supplied from the pneumatic piping AL1 through the pneumatic piping AL2 (described later) to the actuator unit 60.

[0025] (Actuator unit: control unit) The actuator unit 60 comprises a control unit 70, a travel actuator 80, and a work actuator 90. The control unit 70, as an example, includes a power switch 71, an operating status indicator light 72, a flow control valve 73, a solenoid valve 74, a pneumatic measuring instrument 75, and a pneumatic controller 76. Each component of the control unit 70 is housed in a housing 700 (Figure 3).

[0026] The power switch 71 is a switch that allows the operator to manually switch between supplying power from the distribution panel unit 40 to other devices within the control unit 70 and stopping the power supply. The operating status indicator light 72 is an indicator light, such as a lamp, that switches its lighting pattern according to various operating states of the actuator unit 60, such as whether the travel actuator 80 and the work actuator 90 are operating or not.

[0027] The flow control valve 73 is connected to the power tank unit 50 via pneumatic piping AL1 and AL2, and is supplied with compressed air from the compressor 51. The flow control valve 73 adjusts the discharge flow rate of the supplied air. The solenoid valve 74 controls the flow of air discharged from the flow control valve 73 and supplied to the travel actuator 80 and the work actuator 90. A pneumatic measuring device 75 is installed in the middle of the pneumatic piping AL2 to measure the internal air pressure. The pneumatic measuring device 75 outputs the measurement results to the pneumatic controller 76.

[0028] The pneumatic controller 76 is composed of, for example, a storage device, memory (ROM, RAM, non-volatile RAM, etc.), a central processing unit (CPU), and the like. Based on the measurement results from the pneumatic measuring instrument 75, the pneumatic controller 76 controls the flow control valve 73 and the solenoid valve 74 to operate the travel actuator 80 and the work actuator 90 according to the command signals from the controller 46 of the power distribution unit 40.

[0029] (Actuator unit: Actuator for driving) The travel actuator 80 is an air-driven actuator that operates the travel control device 22. As shown in Figures 3 and 4 (dashed line in Figure 4), the travel actuator 80 is located in the cab 5, in front of the travel control device 22, and between the travel control device 22 and the front window 5B. The travel actuator 80 has air cylinders 81 provided corresponding to each travel pedal 221 and travel lever 222. That is, as shown in Figure 4, the air cylinder 81 includes air cylinder 81R provided corresponding to the travel pedal 221R and travel lever 222R, and air cylinder 81L provided corresponding to the travel pedal 221L and travel lever 222L.

[0030] Each air cylinder 81 is connected to the corresponding discharge port of the solenoid valve 74 via pneumatic piping AL3. Each air cylinder 81 moves its piston rod 81p vertically using the air pressure supplied via pneumatic piping AL3 (solid arrow in Figure 3). This piston rod 81p is connected to the corresponding travel pedal 221. As a result, each air cylinder 81 operates the corresponding travel pedal 221 (travel lever 222) by moving the piston rod 81p. Figures 3 and 4 schematically represent each air cylinder 81, and each air cylinder 81 should be positioned so as not to interfere with the driver's operation of the travel pedal 221 and travel lever 222.

[0031] (Actuator unit: Actuator for work) The work actuator 90 is an air-driven actuator that operates the work operation device 24. As shown in Figure 4, the work actuator 90 is positioned to the left and right of the driver's seat 8. The work actuator 90 has a first air cylinder 91 provided in correspondence with the operating lever 241. That is, as shown in Figure 4, the first air cylinder 91 includes a first air cylinder 91R provided in correspondence with the operating lever 241R and a first air cylinder 91L provided in correspondence with the operating lever 241L. Each first air cylinder 91 should be positioned behind each operating lever 241, in a position that does not interfere with the driver's operation of each operating lever 241 or other control switches, and does not interfere with an armrest (not shown).

[0032] Each first air cylinder 91 is connected to the corresponding discharge port of the solenoid valve 74 via pneumatic piping AL4. Each first air cylinder 91 moves a piston rod 91p in the longitudinal direction of the machine body by the air pressure supplied through each pneumatic piping AL4. This piston rod 91p is connected to the corresponding operating lever 241. Furthermore, the working actuator 90 has second air cylinders 92 provided corresponding to each first air cylinder 91. That is, as shown in Figure 4, the second air cylinder 92 includes a second air cylinder 92R provided corresponding to the first air cylinder 91R and a second air cylinder 92L provided corresponding to the first air cylinder 91L. Each second air cylinder 92 is connected to the corresponding discharge port of the solenoid valve 74 via pneumatic piping AL5. Each second air cylinder 92 rotates each first air cylinder 91 about a rotation axis (not shown) extending in the vertical direction by the air pressure supplied through each pneumatic piping AL5.

[0033] With the above configuration, the working actuator 90 can tilt the corresponding operating lever 241 forward, backward, left, and right in accordance with the movement of the piston rod 91p of each first air cylinder 91 and the piston rod 92p of each second air cylinder 92 (solid and dashed arrows in Figure 4). The air cylinder 81, the first air cylinder 91, and the second air cylinder 92 are configured so that their residual pressure is released to the atmosphere when the hydraulic excavator 1 is not being remotely operated by the remote control device 30. This prevents the actuator unit 60 from interfering with the operator's operation of the control device 20.

[0034] (Arrangement and configuration of remote control devices) Next, the arrangement of the remote control device 30 will be described. As shown in Figures 1 to 3, the power distribution unit 40 and the power tank unit 50 of the remote control device 30 are located outside and around the cab 5. Specifically, as shown in Figure 3, the cab 5 of the hydraulic excavator 1 has a ceiling 5U and a rear wall 5W extending downward from the rear end of the ceiling 5U. The housing 400 that accommodates the components of the power distribution unit 40 is attached to the rear end of the ceiling 5U of the cab 5. Furthermore, as shown in Figure 3, the top plate 410 of the housing 400 is configured to be openable and closable by, for example, moving the rear end up and down with the front end as the pivot point. This allows the operator to easily access the inside of the housing 400 by opening and closing the top plate 410 from the rear of the cab 5.

[0035] Furthermore, the housing 500, which houses the components of the power tank unit 50, is mounted near the rear wall 5W of the cab 5 on the ceiling 4U of the building that constitutes the upper slewing body 4 (i.e., the top plate of the machine room 6). Also, the top plate 510 of the housing 500 is configured to be openable and closable, for example, by moving the rear end up and down with the front end as the pivot point, similar to the switchboard unit 40. This allows workers to easily access the inside of the housing 500 by opening and closing the top plate 510 on the upper slewing body 4. As described above, by arranging the switchboard unit 40 and the power tank unit 50 outside the cab 5, space can be saved inside the cab 5.

[0036] On the other hand, the actuator unit 60 of the remote control device 30 is located inside the cab 5. Specifically, the housing 700 that houses each component of the control unit 70 is located in the upper part of the space behind the driver's seat 8, as shown in Figures 3 and 4. This allows the control unit 70 to be located away from the area where the driver mainly works within the cab 5, such as the vicinity of the driver's seat 8, the vicinity of the operating device 20, and the vicinity of the passage 5A. It also prevents the driver's field of view from being narrowed by the control unit 70. In this example, the control unit 70 is located above the work actuator 90, and the pneumatic pipes AL4 and AL5 to the work actuator 90 extend from the lower surface of the control unit 70. The housing 700 can be attached to the driver's seat 8 or the like via mounting members (not shown). Although not shown, the housing 700 can be configured so that, for example, the rear surface can be opened and closed to allow access to the inside by an operator.

[0037] Furthermore, as described above, the travel actuator 80 and the work actuator 90 are positioned near the corresponding operating devices 20. Specifically, the travel actuator 80 is positioned between the travel operating device 22 and the front window 5B, and the work actuator 90 is positioned behind each operating lever 241 and to the side of the driver's seat 8. With this configuration, the actuator unit 60 can be positioned so as not to interfere with the driver's activities inside the cab 5, such as the driver's movement or operation of the operating devices 20.

[0038] (Connection configuration of the remote control device) As shown in Figures 3 and 5, the distribution panel unit 40, the power tank unit 50, and the actuator unit 60 are electrically connected by multiple electrical wires EL1 to EL4. Specifically, multiple electrical wires EL1 extend from the distribution panel unit 40 to the power tank unit 50 for outputting power and command signals. On the other hand, multiple electrical wires EL2 extend from the power tank unit 50, corresponding to each electrical wire EL1. The multiple electrical wires EL1 and multiple electrical wires EL2 are electrically connected to each other via the first connector C1. This reduces the man-hours required for connecting the multiple electrical wires EL1 and EL2.

[0039] Furthermore, multiple electrical wires EL3 extend from the distribution panel unit 40 to the actuator unit 60 for outputting power and command signals. The multiple electrical wires EL3 extend through the ceiling portion 4U of the upper rotating body 4, avoiding the power tank unit 50, into the interior of the upper rotating body 4. In addition, the multiple electrical wires EL3 extend through the floor plate 5F of the cab 5 towards the control unit 70. On the other hand, multiple electrical wires EL4 extend from the actuator unit 60, corresponding to each electrical wire EL3. The multiple electrical wires EL3 and multiple electrical wires EL4 are electrically connected to each other via the second connector C2 near the control unit 70. This reduces the man-hours required for connecting the multiple electrical wires EL3 and EL4. Also, by placing the second connector C2 near the control unit 70 inside the cab 5, the waterproof and dustproof properties of the second connector C2 can be improved. The first connector C1 and the second connector C2 can be well-known connectors that can electrically connect corresponding electrical wires.

[0040] Although Figure 3 shows an example where the first connector C1 is located outside the housings 400 and 500, the first connector C1 may also be located inside either the housing 400 or 500. Alternatively, the first connector C1 may be located inside the upper rotating body 4, such as inside the cab 5, by routing multiple electrical wires EL1 and EL2 into the upper rotating body 4, such as inside the cab 5. This improves the waterproof and dustproof properties of the first connector C1.

[0041] Furthermore, the power tank unit 50 and the actuator unit 60 are connected to each other by pneumatic pipes AL1 and AL2, as shown in Figures 3 and 5. Specifically, pneumatic pipe AL1 extends from the power tank unit 50 into the interior of the upper rotating body 4 via the ceiling portion 4U of the upper rotating body 4. Pneumatic pipe AL1 extends through the floor plate 5F of the cab 5 to the vicinity of the control unit 70 of the actuator unit 60 inside the cab 5. On the other hand, pneumatic pipe AL2 extends downward from the control unit 70. Pneumatic pipes AL1 and AL2 are then connected near the control unit 70 by a pipe connector C3 so that their internal spaces are in communication with each other. The pipe connector C3 can be any well-known fitting used to connect pneumatic pipes. This allows for easy connection of pneumatic pipes AL1 and AL2. In addition, placing the pipe connector C3 inside the cab 5 enhances its waterproof and dustproof properties.

[0042] (Effects of the embodiment) As described above, in the hydraulic excavator (construction machine) 1 of this embodiment, the power distribution unit 40 and the power tank unit (power source unit) 50 are located outside the cab 5 and around the cab 5, while the actuator unit 60 is located inside the cab 5. With this configuration, the hydraulic excavator 1 prevents the space inside the cab 5 from being cramped by the power distribution unit 40 and the power tank unit 50, ensuring ease of entry for the operator into the cab 5 and operability of the control device 20, while also allowing the remote control device 30 to be mounted on the hydraulic excavator 1.

[0043] Furthermore, the power distribution unit 40 is positioned on the ceiling 5U of the cab 5. This configuration makes the power distribution unit 40 easily visible from outside the hydraulic excavator 1, clearly indicating to other workers that the hydraulic excavator 1 is a construction machine equipped with a remote control device 30.

[0044] Furthermore, the power tank unit 50 is positioned at the rear of the cab 5. This configuration allows the power distribution unit 40, the driver inside the cab 5, and the actuator unit 60 to be kept away from the heat generated by the power tank unit 50.

[0045] Furthermore, the operating device 20 is positioned in front of the driver's seat 8 where the driver sits and includes a travel operating device 22 for moving the machine, and a work operating device 24 positioned to the side of the driver's seat 8 for driving the work device 10. The actuator unit 60 includes a travel actuator 80 for operating the travel operating device 22, a work actuator 90 for operating the work operating device 24, and a control unit 70 that controls the travel actuator 80 and the work actuator 90 based on commands from the power distribution unit 40. The travel actuator 80 is positioned in front of the travel operating device 22, the work actuator 90 is positioned behind the work operating device 24, and the control unit 70 is positioned behind the driver's seat 8. This configuration allows the actuator unit 60 to be placed inside the cab 5 while ensuring ease of boarding for the driver and operability of the operating device 20.

[0046] Furthermore, multiple electrical wires EL1 and EL2 that electrically connect the distribution panel unit 40 and the power tank unit 50 are connected by a first connector C1, and multiple electrical wires EL3 and EL4 that electrically connect the distribution panel unit 40 and the actuator unit 60 are connected by a second connector C2. The second connector C2 is located inside the cab 5. This configuration makes it easier to connect the multiple electrical wires EL1 to EL4 and also improves the waterproof and dustproof properties of the second connector C2.

[0047] Furthermore, the power tank unit 50 has a compressor (air supply source) 51 as a power source, and the actuator unit 60 operates using the air pressure supplied from the compressor 51. The pneumatic pipes AL1 and AL2 connecting the actuator unit 60 and the power tank unit 50 are connected by a pipe connector C3 located inside the cab 5. This configuration makes it easier to connect the pneumatic pipes AL1 and AL2 and improves waterproofing and dustproofing.

[0048] In this embodiment, as shown in Figure 3, the control unit 70 of the actuator unit 60 is positioned in the upper part of the space behind the driver's seat 8. However, the position of the control unit 70 is not limited to this. Figure 6 is an explanatory diagram showing another example of the position of the control unit 70. As shown in the figure, the control unit 70 may be positioned in the lower part of the space behind the driver's seat 8. In this case, the control unit 70 may be positioned below the work actuator 90, and the pneumatic pipes AL4 and AL5 to the work actuator 90 may extend from the upper surface of the control unit 70. In this way, by changing the position from which the pneumatic pipes AL4 and AL5 extend from the control unit 70 according to the position, the length of the pneumatic pipes AL4 and AL5 can be made as short as possible, and pressure loss can be reduced.

[0049] This concludes the description of the embodiments, but the aspects of the present invention are not limited to these embodiments. For example, the arrangement and connection configuration of the remote control device 30 in the embodiment were described using the case where the remote control device 30 is mounted on a hydraulic excavator 1 as an example. However, the configuration of the embodiment may be applied to a construction machine that includes a machine body, a work device provided on the machine body, a cab provided on the machine body, and an operating device provided inside the cab for the operator to operate the machine body and the work device. [Explanation of symbols]

[0050] 1. Hydraulic excavator (construction machinery) 2 Lower running body 4. Upper rotating body 5 Cab 5A aisle 5U Ceiling section 5W rear wall 8. Driver's seat 10 Working equipment 20 Operating device 22. Travel control device 221, 221L, 221R riding pedals 222, 222L, 222R driving lever 24 Work control equipment 241 Operating lever 241L Operating lever 241R Operating Lever 30 Remote control device 40 Distribution board unit 50 Power Tank Unit (Power Source Unit) 60 Actuator Units 70 Control Unit 80 Drive actuator 90 Work Actuators AL1~AL5 Pneumatic Piping C1 First Connector C2 Second Connector C3 Piping Connector EL1~EL4 Electrical Wiring

Claims

1. A mobile aircraft, A work device provided on the aforementioned machine, The aforementioned aircraft includes a cab in which the driver sits, An operating device provided inside the cab for the driver to operate the machine and the work equipment, A remote control device that receives remote control signals from an external source and operates the operating device based on the received remote control signals, In construction machinery equipped with, The remote control device comprises an actuator unit for operating the control device, a power source unit including a power source for the actuator unit, and a distribution board unit that controls the actuator unit and the power source unit based on the remote control signal and distributes power to the actuator unit and the power source unit. The aforementioned power distribution unit and the aforementioned power source unit are located outside the cab and around the cab. The actuator unit is located inside the cab. A construction machine characterized by the following features.

2. The construction machine according to claim 1, characterized in that the power distribution unit is located on the ceiling of the cab.

3. The construction machine according to claim 2, characterized in that the power source unit is located behind the cab.

4. The operating device is positioned in front of the driver's seat where the driver sits and includes a driving operating device for moving the machine, and an operating device positioned to the side of the driver's seat for driving the work device. The actuator unit comprises a travel actuator for operating a travel operating device, a work actuator for operating a work operating device, and a control unit that controls the travel actuator and the work actuator based on commands from the power distribution unit. The aforementioned travel actuator is positioned in front of the travel control device. The aforementioned work actuator is positioned behind the aforementioned work operation device. The control unit is located behind the driver's seat. The construction machine according to feature 1.

5. Multiple electrical wires that electrically connect the distribution panel unit and the power source unit are connected by a first connector. Multiple electrical wires that electrically connect the distribution panel unit and the actuator unit are connected by a second connector. The construction machine according to claim 1, wherein at least the second connector of the first connector and the second connector is located inside the cab.

6. The power source unit has an air supply source as the power source, The actuator unit operates by the air pressure supplied from the air supply source, The pneumatic piping connecting the actuator unit and the power source unit is connected by a piping connector located inside the cab. The construction machine according to feature 1.

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