Work machine

Abstract

To provide a technique with which wiring members can be appropriately arranged in a work machine that has a battery unit.SOLUTION: An exemplary work machine, being a work machine comprising a revolving superstructure in front of which a work device is arranged, comprises: a revolving frame constituting a bottom part of the revolving superstructure; a battery unit arranged on top of the revolving frame; a first connection part for inputting electric power to the battery unit, or outputting electric power of the battery unit; a second connection part arranged above the battery unit to distribute electric power; and wiring members extended below the battery unit to connect the first connection part and the second connection part.SELECTED DRAWING: Figure 4

Description

[Technical field]

[0001] The present invention relates to a work machine. [Background technology]

[0002] Conventionally, a rotating work machine equipped with a battery unit is known (see, for example, Patent Document 1). In the rotating work machine disclosed in Patent Document 1, electrical equipment such as a junction box is disposed above and behind the battery unit mounted on a rotating base. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent Publication No. 2021-80704 Summary of the Invention [Problem to be solved by the invention]

[0004] Incidentally, in a rotating work machine as described above, the junction box is usually connected to the battery unit via a wiring member such as a cable. For example, in cases where the cable connection portion is located on the front side of the battery unit, passing the cable above the battery unit makes it possible to connect the junction box above the battery unit to the connection portion without increasing the length of the cable.

[0005] However, for example, in a small work machine, the driver's seat may be disposed above the battery unit via a cover. In such a configuration, the space between the battery unit and the cover tends to be narrow. This may make it difficult to pass a cable through the space between the battery unit and the cover.

[0006] In view of the above, an object of the present invention is to provide a technique that enables wiring members to be appropriately arranged in a work machine equipped with a battery unit. [Means for solving the problem]

[0007] An exemplary work machine of the present invention is a work machine equipped with a rotating body with a working implement arranged at the front, and includes a rotating frame forming the bottom of the rotating body, a battery unit arranged on the rotating frame, a first connection part for inputting electric power to the battery unit or outputting electric power from the battery unit, a second connection part arranged above the battery unit for distributing electric power, and a wiring member that passes below the battery unit and connects the first connection part and the second connection part. Effect of the Invention

[0008] According to the exemplary embodiment of the present invention, wiring members can be appropriately arranged in a work machine equipped with a battery unit. [Brief description of the drawings]

[0009] [Figure 1] FIG. 1 is a perspective view showing a schematic configuration of a work machine; [Diagram 2] FIG. 1 is a perspective view showing a schematic internal configuration of a rotating body; [Diagram 3] FIG. 3 is a schematic perspective view showing the structure of FIG. 2 with some members removed; [Figure 4] FIG. 2 is a perspective view showing a schematic configuration of a portion of wiring and piping in a work machine; [Diagram 5] FIG. 1 is a perspective view showing an outline of a relationship between a piping member and a first vertical plate and a second vertical plate; DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0010] Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the drawings. In the drawings, the same or corresponding parts are designated by the same reference characters, and unless otherwise necessary, the description will not be repeated.

[0011] <1. Overview of the work machine> FIG. 1 is a perspective view showing a schematic configuration of a work machine 100 according to an embodiment of the present invention. Specifically, the work machine 100 is a hydraulic excavator. The work machine 100 may be, for example, a small hydraulic excavator. Note that the work machine of the present invention is not limited to a hydraulic excavator. The present invention is widely applicable to work machines equipped with a rotating body (swivel work machine).

[0012] As shown in FIG. 1, the work machine 100 includes a revolving body 1, a traveling body 2, and a work implement 3.

[0013] In this specification, the side of the rotating body 1 where the working device 3 is located is defined as "front", and the front-rear direction is defined as the up-down direction. The direction of gravity perpendicular to the front-rear direction is defined as the up-down direction, and the upstream side of the gravity direction is defined as "up", and the downstream side is defined as "down". The direction perpendicular to the front-rear direction and the up-down direction is defined as the left-right direction, and the left side from the rear to the front is defined as the "left", and the right side is defined as the "right". A plane parallel to the front-rear direction and the left-right direction is defined as a horizontal plane, and a plane perpendicular to the horizontal plane is defined as a vertical plane. Note that the rotating body 1 does not have a constant orientation because it rotates, but the directional expressions are used on the assumption that the rotating body 1 is constant in the orientation shown in FIG. 1. The directions defined here are simply names used for explanation, and are not intended to limit the actual positional relationship and direction.

[0014] The rotating body 1 is provided so as to be rotatable around an axis extending vertically at its center. In this embodiment, the rotating body 1 is rotatably supported by a traveling body 2 provided below it. The rotating body 1 is driven to rotate by a rotation motor (not shown) configured as a hydraulic motor. The rotating body 1 is provided so as to be able to rotate right and left. A working device 3 is provided in front of the rotating body 1. That is, the work machine 100 is provided with a rotating body 1 with a working device 3 provided in front of it.

[0015] The rotating body 1 is provided with a driver's seat 11 in which an operator who operates the work machine 100 sits. The operator sitting in the driver's seat 11 faces forward and operates various operating devices provided around the driver's seat 11. In this embodiment, the operating devices include an operating lever 12. The driver's seat 11 is supported by a cover (not shown) that covers various members arranged inside the rotating body 1 (engine room). The various members arranged inside the rotating body 1 will be described later. In addition, a counterweight 13 is arranged at the rear end of the rotating body 1.

[0016] The traveling body 2 enables the work machine 100 to self-propel. In detail, the traveling body 2 has a pair of crawlers 22 arranged on the left and right of the traveling body frame 21. Each crawler 22 is driven by a traveling motor 23 consisting of a hydraulic motor. When the pair of left and right crawlers 22 are driven simultaneously in the same direction, the traveling body 2 moves straight forward or backward. Whether it moves forward or backward is determined by the rotation direction of the traveling motor 23. The traveling body 2 turns left or right as the pair of left and right crawlers 22 are driven independently.

[0017] Although the traveling body 2 in this embodiment is a crawler type, the traveling body is not limited to the crawler type and may be a wheel type, etc. In addition, a blade for performing ground leveling work may be provided at the front or rear of the traveling body 2.

[0018] The working device 3 has a boom 31, an arm 32, and a bucket 33. The working device 3 performs excavation work of earth and sand by moving these simultaneously or independently. Note that the bucket 33 may be changed to another working tool such as a breaker used in demolition work, for example.

[0019] One end of the boom 31 is supported by a boom bracket 34 and is rotatable within a vertical plane (rotatable up and down). The boom bracket 34 is supported by the rotating body 1. The boom 31 is bent at the middle portion and is V-shaped in side view. The boom 31 rotates by the extension and contraction of a boom cylinder 35, the other end of which is connected to the boom bracket 34 and the middle portion of the boom 31.

[0020] One end of the arm 32 is supported on the other end of the boom 31 so as to be rotatable within a vertical plane. One end of the arm 32 is connected to the middle part of the boom 31, and the other end of the arm 32 is rotated by extension and contraction of an arm cylinder 36 connected to one end of the arm 32. One end of the bucket 33 is supported on the other end of the arm 32 so as to be rotatable within a vertical plane. One end of the bucket 33 is connected to one end of the arm 32, and the other end of the bucket 33 is rotated by extension and contraction of a bucket cylinder 37 connected to the bucket 33. Note that in FIG. 1, the boom 31, the arm 32, and the bucket 33 are each provided so as to be rotatable about an axis (not shown) extending in the left-right direction.

[0021] More specifically, the boom bracket 34 is supported by the rotating body 1 so as to be rotatable within a horizontal plane (horizontally rotatable). In other words, the boom bracket 34 is rotatable about an axis (not shown) extending in the vertical direction. The boom bracket 34 rotates counterclockwise or clockwise due to expansion and contraction of a swing cylinder 38, one end of which is connected to the rotating body 1 and the other end of which is connected to the boom bracket 34. In other words, the working device 3 can be swung counterclockwise or clockwise by operating the swing cylinder 38.

[0022] The boom cylinder 35, arm cylinder 36, bucket cylinder 37, and swing cylinder 38 are all hydraulic cylinders, and are included in the hydraulic actuators of the work machine 100. The hydraulic actuators of the work machine 100 also include the above-mentioned travel motor 23 and swing motor (not shown). An operator sitting in the driver's seat 11 can control the hydraulic actuators by operating the above-mentioned operation lever 12, and perform work using the work implement 3.

[0023] <2. Configuration of rotating body> [2-1. Overview of the inside of the rotating body] Fig. 2 is a perspective view showing a schematic configuration of the inside of the revolving structure 1. As shown in Fig. 2, the revolving structure 1 is provided with a revolving frame 14 at its bottom. In other words, the work machine 100 is provided with the revolving frame 14 that constitutes the bottom of the revolving structure 1. The revolving frame 14 is made up of a flat plate-shaped member. Various members are mounted on the revolving frame 14.

[0024] 2, a battery unit 4, an electric motor 5, a hydraulic pump 6, and a control valve 7 are disposed on the revolving frame 14. That is, the work machine 100 is equipped with the battery unit 4, the electric motor 5, the hydraulic pump 6, and the control valve 7. The work machine 100 is equipped with the battery unit 4, the electric motor 5, the hydraulic pump 6, and the control valve 7, which are disposed on the revolving frame 14.

[0025] In addition, the revolving frame 14 is provided with a connecting portion 141 to which one end of the above-mentioned swing cylinder 38 can be connected.

[0026] (2-1-1. Swivel frame) Fig. 3 is a schematic perspective view showing the structure of Fig. 2 with some of the members removed. The some of the members include the electric motor 5, the hydraulic pump 6, and the control valve 7. As shown in Figs. 2 and 3, the revolving frame 14 includes a first vertical plate 142 and a second vertical plate 143. That is, the work machine 100 includes the first vertical plate 142 and the second vertical plate 143. By providing the first vertical plate 142 and the second vertical plate 143, the strength of the revolving frame 14 can be increased.

[0027] The first vertical plate 142 and the second vertical plate 143 are provided in a plate shape and are erected in the left-right central portion of the upper surface of the revolving frame 14. The first vertical plate 142 and the second vertical plate 143 extend from the front to the rear on the revolving frame 14 and are arranged with a gap in the left-right direction. In detail, the first vertical plate 142 is arranged on the right side and the second vertical plate 143 is arranged on the left side. However, this is an example, and the first vertical plate 142 may be on the left side and the second vertical plate 143 may be on the right side. The first vertical plate 142 and the second vertical plate 143 have an inclined structure in which the vertical height of the rear side is lower than that of the front side. The first vertical plate 142 and the second vertical plate 143 are the same member integrated with the revolving frame 14.

[0028] A bracket support part 144 that supports the boom bracket 34 so as to be horizontally rotatable is provided at the center in the left-right direction of the front end part of the revolving frame 14. The front ends of the first vertical plate 142 and the second vertical plate 143 are fixed to the bracket support part 144. In other words, the work machine 100 is provided with a boom bracket 34 (swinging body) that is supported by the revolving frame 14 in front of the first vertical plate 142 and the second vertical plate 143 so as to be horizontally rotatable and supports the working implement 3.

[0029] (2-1-2. Battery unit) The battery unit 4 includes at least one battery 41. The battery 41 is, for example, a secondary battery such as a lithium ion battery. In this embodiment, as shown in FIG. 2 and FIG. 3, the battery unit 4 includes a plurality of batteries 41. The plurality of batteries 41 may be connected in series or in parallel. For example, the plurality of batteries 41 may be configured such that some of them are connected in series and some of the batteries connected in series are connected in parallel. In this embodiment, the number of batteries 41 is four. The four batteries 41 are connected in series two by two, and two batteries 41 connected in series are connected in parallel.

[0030] The work machine 100 is equipped with a power supply (not shown) that converts power supplied from an AC power source (such as a commercial power source) external to the work machine 100 from AC power to DC power. The battery unit 4 can be charged by being supplied with power from the power supply. The battery unit 4 can also supply power to various loads equipped in the work machine 100, such as the electric motor 5.

[0031] As shown in Figures 2 and 3, a battery unit support base 145 is provided on the upper surface of the revolving frame 14 (see also Figure 5). The battery unit support base 145 is a single member integrated with the revolving frame 14. In this embodiment, the battery unit support base 145 is divided into multiple parts, but it may be composed of a single part. The battery unit 4 is supported on the battery unit support base 145 via a vibration-proof member 146. The vibration-proof member 146 is composed of, for example, a rubber member. The battery unit 4 supported by the battery unit support base 145 is disposed in the center of the revolving frame 14 in the left-right direction and toward the rear of the revolving frame 14 in the front-rear direction.

[0032] In addition, in a plan view, the driver's seat 11 and the battery unit 4 at least partially overlap each other. A cover (not shown) is disposed between the driver's seat 11 and the battery unit 4 in the vertical direction.

[0033] (2-1-3. Electric motor) The electric motor 5 uses the power of the battery unit 4 as a power source. That is, the electric motor 5 is driven by the power supplied from the battery unit 4. In this embodiment, the electric motor 5 is a three-phase AC motor whose rotation speed is determined by a rotating magnetic field. In detail, power is supplied from the battery unit 4 to an inverter device (not shown). The inverter device converts the DC power supplied from the battery unit 4 into AC power and supplies the AC power to the electric motor 5.

[0034] As shown in Fig. 2, a motor support base 147 is provided on the upper surface of the revolving frame 14. In this embodiment, the motor support base 147 is divided into multiple parts, but it may be configured as a single part. The electric motor 5 is supported by the motor support base 147. The motor support base 147 is supported by the revolving frame 14 via a vibration-proof member 146. The electric motor 5 supported by the motor support base 147 is disposed on one side of the battery unit 4 in the left-right direction (the right side in this embodiment), and in the center of the revolving frame 14 in the front-rear direction.

[0035] (2-1-4. Hydraulic pump) The hydraulic pump 6 is driven by the electric motor 5. The hydraulic pump 6 driven by the electric motor 5 pressure-feeds hydraulic oil to the above-mentioned hydraulic actuators (hydraulic cylinders 35 to 38, hydraulic motor 23, etc.).

[0036] Specifically, the hydraulic pump 6 is disposed adjacent to the right of the electric motor 5. The hydraulic pump 6 is connected to a connector 5a provided at the right end of the electric motor 5. Specifically, the motor support base 147 supports the connector 5a. The hydraulic pump 6 is disposed outside the machine body on the opposite side to the second vertical plate 143 side (the right side in this embodiment) with respect to the first vertical plate 142. By arranging members that are lighter than heavy objects such as the battery unit 4 outside the machine body, the balance of the work machine 100 can be improved.

[0037] (2-1-5. Control valve) The control valve 7 is interposed between the hydraulic pump 6 and the hydraulic actuator (hydraulic cylinders 35-38 and hydraulic motor 23, etc.). The control valve 7 is a control valve that is operated by an operating lever 12 and controls the flow of hydraulic oil supplied from the hydraulic pump 6 to the hydraulic actuator. More specifically, the control valve 7 controls the flow direction and flow rate of the hydraulic oil.

[0038] More specifically, the control valve 7 is an assembly of a plurality of hydraulic switching valves. The control valve 7 controls the operation of the hydraulic cylinders 35-38 and the hydraulic motor 23, etc., included in the hydraulic actuator, by switching between supplying and discharging hydraulic oil to each of them. The control valve 7 is disposed outside the machine body, on the opposite side to the first vertical plate 142 side (on the left side in this embodiment) with respect to the second vertical plate 143. By disposing members that are lighter than heavy objects such as the battery unit 4 outside the machine body, the balance of the work machine 100 can be improved.

[0039] [2-2. Wiring and piping] Next, the wiring and piping in the work machine 100 will be described. Fig. 4 is a perspective view showing a schematic configuration of part of the wiring and piping in the work machine 100. Fig. 4 is a view of the inside of the revolving body 1 as viewed obliquely from below with the revolving frame 14 removed. Below, the wiring and piping will be described mainly with reference to Fig. 4.

[0040] (2-2-1. Wiring) As shown in FIG. 4, the work machine 100 includes a wiring member 9, a first connection portion 91, and a second connection portion 92.

[0041] The wiring member 9 is used to input electric power to the battery unit 4 and output electric power from the battery unit 4. The wiring member 9 broadly includes electric wires such as cables and harnesses. In this embodiment, the wiring member 9 is a cable, and more specifically, a high-voltage cable.

[0042] The first connection portion 91 is a connection portion that inputs electric power to the battery unit 4 or outputs electric power from the battery unit 4. In this embodiment, the first connection portion 91 is included in a box-shaped first electric device 93 (see also FIG. 2) that is arranged adjacent to the battery unit 4. However, such a configuration is merely an example, and the first connection portion 91 may be provided in the battery unit 4 itself, for example. In other words, the first electric device 93 is not an essential component. By providing the first electric device 93 having the first connection portion 91 separately from the battery unit 4, it is possible to make it easier to use the battery unit 4 that includes a plurality of batteries 41, for example.

[0043] More specifically, the first electric device 93 is a PDU (Power Distribution Unit). The PDU 93 has a function of consolidating the output and input of electric power to the multiple batteries 41 included in the battery unit 4. The PDU 93 controls an internal battery relay to control the input and output of electric power in the battery unit 4. In this embodiment, the PDU 93 is disposed adjacent to the front of the battery unit 4. The first connection portion 91 is disposed at the upper part of the right side surface of the PDU 93.

[0044] The second connection part 92 is disposed above the battery unit 4 and is a connection part that distributes electric power. The second connection part 92 distributes the electric power consumed in the work machine 100 and the electric power charged in the battery unit 4. The second connection part 92 supplies the electric power output from the battery unit 4 to, for example, an inverter device that drives the electric motor 5, a converter device that drops the voltage, etc. The second connection part 92 also supplies the electric power output from a power supply (not shown) to the battery unit 4, the converter device, etc.

[0045] In this embodiment, the second connection portion 92 is included in a box-shaped second electric device 94 arranged above the battery unit 4. However, such a configuration is merely an example, and the second connection portion 92 does not have to be a box-shaped electric device, and may be, for example, composed of at least one relay arranged above the battery unit 4. That is, the second electric device 94 is not an essential component. By providing the box-shaped second electric device 94, for example, it is possible to improve the aesthetic appearance by bundling electric wires and to protect the electric wires. More specifically, the second electric device 94 is a junction box. The junction box 94 is arranged above the rear of the battery unit 4. The second connection portion 92 is arranged on the rear surface of the junction box 94.

[0046] The wiring member 9 passes below the battery unit 4 and connects the first connection portion 91 and the second connection portion 92. The wiring member 9 electrically connects the first connection portion 91 and the second connection portion 92. As described above, the battery unit 4 is supported using the battery unit support base 145 provided on the upper surface of the revolving frame 14. For this reason, a gap originally exists between the bottom surface of the battery unit 4 and the upper surface of the revolving frame 14. When the wiring member 9 is configured to pass below the battery unit 4, the gap can be effectively used to arrange the wiring member 9.

[0047] In this embodiment, the junction box 94 is located behind the driver's seat 11. Therefore, even if the vertical height of the battery unit 4 is increased, the junction box 94 does not interfere with the driver's seat 11. Furthermore, according to the configuration of this embodiment, a space for wiring the wiring members 9 above the battery unit 4 is not necessarily required. Therefore, the height of the battery unit 4 disposed below the driver's seat 11 can be increased within a range that does not interfere with the driver's seat 11 (more specifically, a cover that supports the driver's seat 11). In other words, a battery 41 with as large a capacity as possible can be disposed in the engine room.

[0048] In the present embodiment, the first connection portion 91 is disposed on the front side of the battery unit 4, and the second connection portion 92 is disposed on the rear side of the battery unit 4. However, this is merely an example, and the first connection portion 91 and the second connection portion 92 may be provided on a side surface of the battery unit 4 different from the above-mentioned side surface. That is, the first connection portion 91 may be provided on one side surface of the battery unit 4, and the second connection portion 92 may be provided on another side surface of the battery unit 4 different from the one side surface. The one side surface and the other side surface may be surfaces that face each other, or may not face each other. By providing the first connection portion 91 and the second connection portion 92 on the side surface of the battery unit 4, the wiring member 9 can be configured not to cross the upper surface of the battery unit 4 at all.

[0049] (2-2-2. Piping) As shown in Fig. 4, the work machine 100 is equipped with a piping member 10. The piping member 10 is used to pressure-feed the hydraulic oil discharged from the hydraulic pump 6 to the control valve 7. In other words, the control valve 7 is connected to the hydraulic pump 6 via the piping member 10. The piping member 10 is preferably a flexible member, and is a hydraulic hose in this embodiment. Note that, since the control valve 7 is an assembly of multiple hydraulic switching valves, there are multiple piping members 10 connecting the hydraulic pump 6 and the control valve 7.

[0050] The piping member 10 intersects with the wiring member 9. With this configuration, a part of the piping member 10 and a part of the wiring member 9 can be arranged together in the same space, making it possible to efficiently utilize the space inside the rotating body 1 (engine room).

[0051] Specifically, it is preferable that the piping member 10 passes under the wiring member 9. In this embodiment, the piping member 10 is located under the wiring member 9 at the position where the piping member 10 and the wiring member 9 intersect. With this configuration, even if oil drips from the piping member 10, it is possible to prevent the dripped oil from getting on the wiring member 9.

[0052] More specifically, in this embodiment, as a preferred embodiment, the wiring member 9 passes between the piping member 10 and the battery unit 4 (between in the up-down direction). According to this configuration, the wiring member 9 and the piping member 10 intersect in the space below the battery unit 4. That is, the wiring member 9 and the piping member 10 can be disposed in the revolving body 1 by effectively utilizing the space below the battery unit 4.

[0053] Fig. 5 is a perspective view showing a schematic relationship between the piping member 10 and the first vertical plate 142 and the second vertical plate 143. As shown in Fig. 5, the first vertical plate 142 and the second vertical plate 143 each have a notch 142a, 143a at the rear that is recessed upward from the lower end. By providing the notches 142a, 143a, the piping member 10 is disposed so as to penetrate each of the first vertical plate 142 and the second vertical plate 143.

[0054] The two notches 142a, 143a overlap each other in a side view from the left-right direction. That is, when passing the piping member 10 through the two notches 142a, 143a, there is no need to forcibly bend the piping member 10. In addition, in this embodiment, elements constituting the revolving frame 14 (such as the battery unit support base 145) are disposed adjacent to the left of the first vertical plate 142 and the second vertical plate 143. However, since these are configured in an inverted U-shape or have notches, the piping member 10 can be disposed so as to penetrate them.

[0055] In this embodiment, the first vertical plate 142 and the second vertical plate 143 are provided with the notches 142a and 143a, respectively, but this is merely an example. The first vertical plate 142 and the second vertical plate 143 may each be provided with a through hole penetrating in the left-right direction for passing the piping member 10. That is, it is preferable that the first vertical plate 142 and the second vertical plate 143 each have a notch or a through hole for passing the piping member 10. With such a configuration, the piping member 10 does not need to be arranged to avoid the first vertical plate 142 and the second vertical plate 143, and the piping member 10 can be arranged efficiently. In addition, if the piping member 10 passes above the first vertical plate 142 and the second vertical plate 143 while avoiding them, it may be necessary to make the battery unit 4 smaller, but the configuration of this embodiment makes it possible to avoid such a situation.

[0056] Note that, of the first vertical plate 142 and the second vertical plate 143, one may be provided with a notch for passing the piping member 10 therethrough, and the other may be provided with a through hole for passing the piping member 10 therethrough.

[0057] <3. Things to keep in mind> Various technical features disclosed in this specification may be modified in various ways without departing from the spirit of the technical creation. Furthermore, multiple embodiments and modifications shown in this specification may be combined to the extent possible.

[0058] <4. Notes> An exemplary work machine of the present invention may be a work machine equipped with a rotating body with a working implement arranged at the front, and may have a configuration (first configuration) including a rotating frame forming the bottom of the rotating body, a battery unit arranged on the rotating frame, a first connection portion that inputs power to the battery unit or outputs power from the battery unit, a second connection portion arranged above the battery unit and distributes the power, and a wiring member that passes below the battery unit and connects the first connection portion and the second connection portion.

[0059] In the work machine of the above-mentioned first configuration, the first connection portion may be provided on one side of the battery unit, and the second connection portion may be provided on another side of the battery unit different from the one side (second configuration).

[0060] In the work machine of the above first or second configuration, the first connection portion may be configured (third configuration) to be included in a box-shaped first electric device arranged adjacent to the battery unit.

[0061] In the work machine of any one of the first to third configurations described above, the second connection portion may be configured (fourth configuration) to be included in a box-shaped second electric device arranged above the battery unit.

[0062] A working machine of any of the above first to fourth configurations may include a hydraulic pump arranged on the rotating frame and driven by an electric motor powered by the power of the battery unit, and a control valve arranged on the rotating frame and connected to the hydraulic pump via piping members, and the piping members may be configured to intersect with the wiring members (fifth configuration).

[0063] In the work machine of the fifth configuration described above, the piping member may be configured to pass under the wiring member (sixth configuration).

[0064] In the work machine of the sixth configuration described above, the wiring member may be configured to pass between the piping member and the battery unit (seventh configuration).

[0065] A work machine of any of the above fifth to seventh configurations may be configured to include a first vertical plate and a second vertical plate extending from front to rear on the rotating frame and spaced apart on the left and right, the hydraulic pump being arranged on the outside of the machine body on the opposite side of the first vertical plate to the second vertical plate, and the control valve being arranged on the outside of the machine body on the opposite side of the second vertical plate to the first vertical plate (eighth configuration).

[0066] In the work machine of the eighth configuration described above, each of the first vertical plate and the second vertical plate may have a notch or a through hole through which the piping member passes (ninth configuration). [Explanation of symbols]

[0067] 1. Rotating body 3. Working device 4. Battery unit 5. Electric motor 6. Hydraulic pump 7. Control valve 9. Wiring materials 10 Piping components 14 Swivel frame 91...First connection part 92...Second connection part 93 Electrical Equipment No. 1 94 Second Electrical Equipment 100...Work machinery 142...First vertical plate 142a...Notch 143...Second vertical plate 143a...Notch

Claims

1. A work machine having a rotating body with a work implement disposed in front thereof, A revolving frame that constitutes a bottom portion of the revolving body; A battery unit disposed on the rotating frame; A first connection portion that inputs electric power to the battery unit or outputs electric power from the battery unit; A second connection portion disposed above the battery unit and configured to distribute power; a wiring member that passes below the battery unit and connects the first connection portion and the second connection portion; A work machine comprising:

2. The first connection portion is provided on one side surface of the battery unit, The work machine according to claim 1 , wherein the second connection portion is provided on another side surface of the battery unit that is different from the one side surface.

3. The work machine according to claim 1 or 2, wherein the first connection portion is included in a box-shaped first electric device arranged adjacent to the battery unit.

4. The work machine according to claim 1 or 2, wherein the second connection portion is included in a box-shaped second electric device that is arranged above the battery unit.

5. a hydraulic pump that is disposed on the rotating frame and driven by an electric motor that uses the power of the battery unit as a power source; a control valve that is disposed on the rotating frame and connected to the hydraulic pump via a piping member; Equipped with The work machine according to claim 1 , wherein the piping member intersects with the wiring member.

6. The work machine according to claim 5 , wherein the piping member passes under the wiring member.

7. The work machine according to claim 6 , wherein the wiring member passes between the piping member and the battery unit.

8. a first vertical plate and a second vertical plate extending from the front to the rear on the rotating frame and spaced apart from each other on the left and right; The hydraulic pump is disposed on the outer side of the aircraft body opposite to the second vertical plate side with respect to the first vertical plate, The work machine according to claim 5 , wherein the control valve is disposed outboard of the machine body on an opposite side to the first vertical plate with respect to the second vertical plate.

9. The work machine according to claim 8 , wherein each of the first vertical plate and the second vertical plate has a notch or a through hole through which the piping member passes.

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