Work machine

Abstract

The invention provides a technology capable of appropriately arranging a wiring member in a work machine provided with a battery cell. An exemplary work machine is provided with a rotating body in which a work device is disposed in the front thereof, and is provided with: a rotating frame that constitutes the bottom of the rotating body; a battery unit disposed on the rotating frame; a first connection unit that inputs power to the battery cell or outputs power from the battery cell; a second connection part which is disposed above the battery cell and distributes electric power; and a wiring member that passes from below the battery cell and connects the first connection part and the second connection part.

Description

Technical Field

[0001] The present invention relates to a working machine. Background Art

[0002] Conventionally, a rotary working machine equipped with a battery unit is known (see, for example, Patent Document 1). In the rotary working machine disclosed in Patent Document 1, electrical components such as a junction box are arranged above and behind the battery unit mounted on a rotary table.

[0003] Patent Document 1: Japanese Patent Application Publication No. 2021-80704

[0004] However, in the above-mentioned swing working machine, the junction box is usually connected to the battery unit via a wiring member such as a cable. For example, when the connecting portion of the cable is on the front surface side of the battery unit, if the cable is passed above the battery unit, the junction box and the connecting portion located above the battery unit can be connected while suppressing the increase in the length of the cable.

[0005] However, in a small working machine, for example, a driver's seat is sometimes arranged above the battery unit via a cover. In such a structure, there is a tendency for the space between the battery unit and the cover to become narrower. Therefore, it may be difficult to pass the cable through the space between the battery unit and the cover. Summary of the invention

[0006] In view of the above circumstances, an object of the present invention is to provide a technology capable of appropriately arranging wiring members in a working machine including a battery unit.

[0007] An exemplary working machine of the present invention is a working machine having a rotating body with a working device arranged in front, wherein the machine comprises: a rotating frame constituting the bottom of the rotating body; a battery unit arranged on the rotating frame; a first connection portion for inputting power to the battery unit or outputting power from the battery unit; a second connection portion arranged above the battery unit and distributing power; and a wiring component passing through the bottom of the battery unit and connecting the first connection portion and the second connection portion.

[0008] According to the exemplary present invention, it is possible to appropriately arrange the wiring members in a working machine including a battery unit. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 It is a perspective view showing a schematic structure of a working machine.

[0010] Figure 2 It is a perspective view showing the schematic structure of the interior of the rotating body.

[0011] Figure 3 is from Figure 2A schematic perspective view showing a part of the device with some components removed.

[0012] Figure 4 This is a perspective view schematically showing a part of the wiring and piping in the working machine.

[0013] Figure 5 It is a perspective view schematically showing the relationship between the piping member, the first vertical plate, and the second vertical plate.

[0014] Description of Reference Numerals

[0015] 1…rotating body; 3…working device; 4…battery unit; 5…electric motor; 6…hydraulic pump; 7…control valve; 9…wiring component; 10…piping component; 14…rotating frame; 91…first connecting portion; 92…second connecting portion; 93…first electrical equipment; 94…second electrical equipment; 100…working machine; 142…first longitudinal plate; 142a…cutout; 143…second longitudinal plate; 143a…cutout. DETAILED DESCRIPTION

[0016] Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. In addition, the same reference numerals are given to the same or corresponding parts in the drawings, and the description thereof will not be repeated unless it is particularly necessary.

[0017] <1. Schematic structure of working machine>

[0018] Figure 1 1 is a perspective view showing a schematic structure of a working machine 100 according to an embodiment of the present invention. Specifically, the working machine 100 is a hydraulic excavator. The working machine 100 may be, for example, a small hydraulic excavator. In addition, the working machine of the present invention is not limited to a hydraulic excavator. The present invention can be widely applied to working machines (swinging working machines) having a swinging body.

[0019] like Figure 1 As shown, the working machine 100 includes a revolving structure 1 , a traveling structure 2 , and a working device 3 .

[0020] In addition, in this specification, the front-to-back direction is defined by taking the side where the working device 3 is located as "front" relative to the rotating body 1. In addition, the gravity direction perpendicular to the front-to-back direction is taken as the up-down direction, the upstream side of the gravity direction is taken as "up", and the downstream side is taken as "down". The direction perpendicular to the front-to-back direction and the up-down direction is taken as the left-to-right direction, the side that becomes the left when moving from the back to the front is taken as "left", and the side that becomes the right is taken as "right". In addition, the plane parallel to the front-to-back direction and the left-to-right direction is taken as a horizontal plane, and the plane orthogonal to the horizontal plane is taken as a vertical plane. In addition, since the rotating body 1 rotates, its direction is not fixed, but the rotating body 1 is taken as Figure 1The directions are expressed on the premise that the orientation shown does not change. In addition, the directions defined here are only names used for explanation and are not intended to limit the actual positional relationship and direction.

[0021] The revolving body 1 is configured to be able to rotate around an axis extending in the vertical direction at its central portion. In addition, in the present embodiment, the revolving body 1 is supported by a traveling body 2 arranged below it in a manner that allows it to rotate. The revolving body 1 is driven by a revolving motor (not shown) composed of a hydraulic motor to rotate. The revolving body 1 is configured to be able to rotate right and left. The working device 3 is arranged in front of the revolving body 1. That is, the working machine 100 includes a revolving body 1 with a working device 3 arranged in front.

[0022] The revolving body 1 is provided with a driving seat 11 for an operator who operates the working machine 100 to sit on. The operator who sits on the driving seat 11 faces forward and operates various operating devices provided around the driving seat 11. In the present embodiment, the operating device includes an operating lever 12. The driving seat 11 is supported by a cover (not shown) that covers various components arranged inside the revolving body 1 (engine room). The various components arranged inside the revolving body 1 will be described later. In addition, a counterweight 13 is arranged at the rear end of the revolving body 1.

[0023] The traveling body 2 enables the working machine 100 to move by itself. Specifically, the traveling body 2 has a pair of crawlers 22 arranged on the left and right sides of the traveling body frame 21. Each crawler 22 is driven by a traveling motor 23 composed of a hydraulic motor. If the left and right crawlers 22 are driven in the same direction at the same time, the traveling body 2 moves straight forward or backward. Whether it is forward or backward is determined by the rotation direction of the traveling motor 23. The traveling body 2 is driven independently by the left and right crawlers 22 to make a left turn or a right turn.

[0024] In addition, the traveling body 2 of the present embodiment is a crawler type, but the traveling body is not limited to the crawler type, and may also be a wheel type, etc. In addition, a bulldozer for performing land leveling work may be provided at the front or rear of the traveling body 2.

[0025] The working device 3 has a boom 31, an arm 32, and a bucket 33. The working device 3 performs excavation work of sand and soil by operating these simultaneously or independently. In addition, the bucket 33 can be replaced with other working tools such as a crusher used in the demolition work.

[0026] One end of the boom 31 is supported by a boom bracket 34, and the boom 31 can rotate in a vertical plane (can rotate up and down). The boom bracket 34 is supported by the revolving body 1. The boom 31 is bent in the middle part and has a V-shape when viewed from the side. The boom 31 rotates by extending and retracting a boom cylinder 35, one end of which is connected to the boom bracket 34 and the other end of which is connected to the middle part of the boom 31.

[0027] One end of the boom 32 is supported on the other end of the boom 31 so as to be rotatable in a vertical plane. The boom 32 is rotated by extending and retracting an arm cylinder 36, one end of which is connected to the middle portion of the boom 31 and the other end of which is connected to one end of the boom 32. One end of the bucket 33 is supported on the other end of the boom 32 so as to be rotatable in a vertical plane. The bucket 33 is rotated by extending and retracting a bucket cylinder 37, one end of which is connected to one end of the boom 32 and the other end of which is connected to the bucket 33. Figure 1 In the embodiment, the boom 31, the arm 32, and the bucket 33 are respectively provided so as to be rotatable around an axis (not shown) extending in the left-right direction.

[0028] Specifically, the boom bracket 34 is supported on the revolving body 1 so as to be rotatable in a horizontal plane (horizontally rotatable). In other words, the boom bracket 34 can rotate about an axis (not shown) extending in the vertical direction. The boom bracket 34 rotates in a left or right direction by extending and retracting a sway cylinder 38 connected to the revolving body 1 at one end and connected to the boom bracket 34 at the other end. That is, by operating the sway cylinder 38, the working device 3 can be swung in a left or right direction.

[0029] The boom cylinder 35, the arm cylinder 36, the bucket cylinder 37, and the sway cylinder 38 are all hydraulic cylinders, and are included in the hydraulic actuator of the working machine 100. In addition, the hydraulic actuator of the working machine 100 also includes the above-mentioned travel motor 23 and a swing motor (not shown). The operator sitting in the driving seat 11 can control the hydraulic actuator by operating the above-mentioned operating lever 12, and perform work using the working device 3.

[0030] <2. Structure of the rotating body>

[0031] [2-1. Overview of the interior of the rotating body]

[0032] Figure 2 1 is a perspective view showing the schematic structure of the interior of the rotating body 1. Figure 2 As shown, the revolving structure 1 includes a revolving frame 14 at the bottom thereof. In other words, the working machine 100 includes a revolving frame 14 constituting the bottom of the revolving structure 1. The revolving frame 14 is composed of a flat plate-shaped member. Various components are mounted on the revolving frame 14.

[0033] like Figure 2 As shown, the battery unit 4, the electric motor 5, the hydraulic pump 6 and the control valve 7 are arranged on the revolving frame 14. That is, the working machine 100 includes the battery unit 4, the electric motor 5, the hydraulic pump 6 and the control valve 7. The working machine 100 includes the battery unit 4, the electric motor 5, the hydraulic pump 6 and the control valve 7 arranged on the revolving frame 14.

[0034] Furthermore, the revolving frame 14 is provided with a connecting portion 141 to which one end of the yaw cylinder 38 can be connected.

[0035] (2-1-1. Rotating frame)

[0036] Figure 3 is from Figure 2 A schematic three-dimensional diagram showing a part of the components removed. The part of the components includes an electric motor 5, a hydraulic pump 6 and a control valve 7. Figure 2 and Figure 3 As shown, the revolving frame 14 includes a first vertical plate 142 and a second vertical plate 143. That is, the working 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 improved.

[0037] The first longitudinal plate 142 and the second longitudinal plate 143 are plate-shaped and are vertically arranged in the central part of the left-right direction of the upper surface of the revolving frame 14. The first longitudinal plate 142 and the second longitudinal plate 143 extend from the front to the rear on the revolving frame 14, and are arranged at intervals in the left-right direction. In detail, the first longitudinal plate 142 is arranged on the right side, and the second longitudinal plate 143 is arranged on the left side. However, this is an example, and the first longitudinal plate 142 can also be on the left side and the second longitudinal plate 143 can be on the right side. The first longitudinal plate 142 and the second longitudinal plate 143 have an inclined structure in which the height in the up-down direction of the rear side is lower than that of the front side. The first longitudinal plate 142 and the second longitudinal plate 143 are the same component integrated with the revolving frame 14.

[0038] A bracket support portion 144 that supports the boom bracket 34 so as to be horizontally rotatable is provided at the left-right center portion of the front end portion 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 portion 144. That is, the working machine 100 includes a boom bracket 34 (swing body) that is horizontally rotatably supported on the revolving frame 14 in front of the first vertical plate 142 and the second vertical plate 143 and supports the working device 3.

[0039] (2-1-2. Battery unit)

[0040] The battery unit 4 is configured to include at least one battery 41. The battery 41 is, for example, a secondary battery such as a lithium-ion battery. Figure 2 and Figure 3 As shown, the battery unit 4 includes a plurality of batteries 41. The plurality of batteries 41 may be connected in series or in parallel. In addition, for example, the plurality of batteries 41 may be partially connected in series, and the partially connected in series may be connected in parallel to each other. In this embodiment, the number of batteries 41 is 4. The four batteries 41 are connected in series in pairs, and the two batteries 41 connected in series are connected in parallel to each other.

[0041] The working machine 100 is provided with a power supply (not shown) that converts the power supplied from an AC power source (commercial power source, etc.) located outside the working machine 100 from AC power to DC power. The battery unit 4 can be charged by the power supplied by the power supply. In addition, the battery unit 4 can supply power to various loads provided in the working machine 100, such as the electric motor 5.

[0042] like Figure 2 and Figure 3 As shown, a battery unit support 145 (also see Figure 5 ). The battery cell support 145 is the same component integrated with the revolving frame 14. In the present embodiment, the battery cell support 145 is divided into a plurality of parts, but it may also be composed of a single part. The battery cell 4 is supported on the battery cell support 145 via a vibration-proof component 146. The vibration-proof component 146 is composed of, for example, a rubber component. The battery cell 4 supported on the battery cell support 145 is arranged close to the center of the revolving frame 14 in the left-right direction and close to the rear side of the revolving frame 14 in the front-back direction.

[0043] In addition, the driver's seat 11 and the battery unit 4 at least partially overlap in a plan view. A cover (not shown) is arranged between the driver's seat 11 and the battery unit 4 in the vertical direction.

[0044] (2-1-3. Electric motor)

[0045] 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 the present 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.

[0046] like Figure 2 As shown, a motor support 147 is provided on the upper surface of the revolving frame 14. In the present embodiment, the motor support 147 is divided into a plurality of parts, but may also be composed of a single part. The electric motor 5 is supported on the motor support 147. The motor support 147 is supported on the revolving frame 14 via a vibration-proof component 146. The electric motor 5 supported on the motor support 147 is arranged on one side (the right side in the present embodiment) in the left-right direction of the battery unit 4 and in the center of the front-back direction of the revolving frame 14.

[0047] (2-1-4. Hydraulic pump)

[0048] 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 hydraulic actuators (the hydraulic cylinders 35 to 38 and the hydraulic motor 23, etc.).

[0049] In detail, the hydraulic pump 6 is arranged adjacent to the right side of the electric motor 5. The hydraulic pump 6 is connected to the connecting body 5a provided at the right end of the electric motor 5. In detail, the motor support stand 147 supports the connecting body 5a. The hydraulic pump 6 is arranged on the outside of the machine body on the side opposite to the second longitudinal plate 143 side (the right side in this embodiment) with respect to the first longitudinal plate 142. By arranging components lighter than heavy objects such as the battery unit 4 on the outside of the machine body, the balance of the working machine 100 can be improved.

[0050] (2-1-5. Control valve)

[0051] The control valve 7 is interposed between the hydraulic pump 6 and the hydraulic actuator (hydraulic cylinders 35 to 38 and the hydraulic motor 23, etc.). The control valve 7 is operated by the operating lever 12 to control the flow of the hydraulic oil supplied from the hydraulic pump 6 to the hydraulic actuator. Specifically, the control valve 7 controls the flow direction and flow rate of the hydraulic oil.

[0052] In more detail, the control valve 7 is a collection of multiple hydraulic switching valves. The control valve 7 controls the operation of each of the hydraulic cylinders 35 to 38 and the hydraulic motor 23 included in the hydraulic actuator by switching the supply and discharge of working oil. The control valve 7 is arranged on the outside of the machine body on the side opposite to the first longitudinal plate 142 (the left side in this embodiment) relative to the second longitudinal plate 143. Arranging components lighter than heavy objects such as the battery unit 4 on the outside of the machine body can improve the balance of the working machine 100.

[0053] [2-2. Wiring and piping]

[0054] Next, wiring and piping in the working machine 100 will be described. Figure 4 It is a perspective view schematically showing a part of the wiring and piping in the working machine 100 . Figure 4 This is a view obtained by removing the revolving frame 14 and viewing the interior of the revolving body 1 from an oblique bottom. Figure 4 Explain wiring and piping.

[0055] (2-2-1. Wiring)

[0056] like Figure 4 As shown, the working machine 100 includes the wiring member 9 , a first connection portion 91 , and a second connection portion 92 .

[0057] The wiring member 9 is used to input power to the battery cell 4 or output power from the battery cell 4. The wiring member 9 widely includes electric wires such as cables and wire harnesses. In the present embodiment, the wiring member 9 is a cable, more specifically, a high-voltage cable.

[0058] The first connection portion 91 is a connection portion for inputting electric power to the battery cell 4 or outputting electric power from the battery cell 4. In the present embodiment, the first connection portion 91 is included in a box-shaped first electrical device 93 (also see Figure 2 ). However, this structure is only an example, and for example, the first connection portion 91 may also be provided on the battery unit 4 itself. That is, the first electrical device 93 is not an essential component. By providing the first electrical device 93 having the first connection portion 91 independently from the battery unit 4, for example, it is possible to facilitate the use of the battery unit 4 including a plurality of batteries 41.

[0059] In detail, the first electrical device 93 is a PDU (Power Distribution Unit). The PDU 93 has a function of summarizing the power output and power input to the plurality of batteries 41 provided in the battery unit 4. The PDU 93 controls the internal battery relay to control the input and output of power of the battery unit 4. In the present embodiment, the PDU 93 is arranged adjacent to the front of the battery unit 4. The first connection portion 91 is arranged on the upper portion of the right side surface of the PDU 93.

[0060] The second connection part 92 is a connection part that is arranged above the battery unit 4 and distributes electric power. The second connection part 92 distributes the electric power consumed in the working 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, and the like. In addition, the second connection part 92 supplies the electric power output from the power supply (not shown) to the battery unit 4, the converter device, and the like.

[0061] In the present embodiment, the second connection portion 92 includes a box-shaped second electrical device 94 disposed above the battery cell 4. However, this structure is merely an example, and the second connection portion 92 may not be a box-shaped electrical device, and may be composed of, for example, at least one relay disposed above the battery cell 4. That is, the second electrical device 94 is not an essential component. By providing a box-shaped second electrical device 94, for example, the wires can be concentrated to improve the appearance and protect the wires. In detail, the second electrical device 94 is a junction box. The junction box 94 is disposed above the rear of the battery cell 4. The second connection portion 92 is disposed on the rear surface of the junction box 94.

[0062] The wiring member 9 passes under the battery cell 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 cell 4 is supported by the battery cell support stand 145 provided on the upper surface of the revolving frame 14. Therefore, there is a gap between the bottom surface of the battery cell 4 and the upper surface of the revolving frame 14. In the case of a structure in which the wiring member 9 passes under the battery cell 4, the wiring member 9 can be effectively arranged by utilizing the gap.

[0063] Furthermore, in the present embodiment, the junction box 94 is located further back than the driver's seat 11. Therefore, even if the height of the battery unit 4 in the vertical direction is increased, the junction box 94 does not interfere with the driver's seat 11. In addition, according to the structure of the present embodiment, a space for arranging the wiring component 9 above the battery unit 4 is not necessarily required. Therefore, the height of the battery unit 4 arranged below the driver's seat 11 can be increased within a range that does not interfere with the driver's seat 11 (more specifically, the cover supporting the driver's seat 11). That is, a battery 41 with a capacity as large as possible can be arranged in the engine.

[0064] In addition, in the present embodiment, the first connection portion 91 is arranged on the front surface side of the battery cell 4, and the second connection portion 92 is arranged on the rear surface side of the battery cell 4. However, this is only an example, and the first connection portion 91 and the second connection portion 92 may also be arranged on the side surface side of the battery cell 4 that is different from the above-mentioned side surface side. That is, the first connection portion 91 may be arranged on the side of one side surface of the battery cell 4, and the second connection portion 92 may be arranged on the side of the other side surface of the battery cell 4 that is different from the above-mentioned side surface side. One side surface and the other side surface may be surfaces that are opposite to each other, or surfaces that are not opposite to each other. By setting the structure in which the first connection portion 91 and the second connection portion 92 are arranged on the side surface side of the battery cell 4, the wiring component 9 can be configured so as not to cross the upper surface of the battery cell 4 at all.

[0065] (2-2-2.Piping)

[0066] like Figure 4 As shown, the working machine 100 is provided with a piping component 10. The piping component 10 is used to pressurize the working oil discharged from the hydraulic pump 6 to the control valve 7. That is, the control valve 7 is connected to the hydraulic pump 6 via the piping component 10. The piping component 10 is preferably a flexible component, and in this embodiment, it is a hydraulic hose. In addition, the control valve 7 is an aggregate of a plurality of hydraulic switching valves, so the number of piping components 10 connecting the hydraulic pump 6 and the control valve 7 is plural.

[0067] The piping member 10 intersects the wiring member 9. With such a structure, a part of the piping member 10 and a part of the wiring member 9 can be arranged in the same space, and the space inside the revolving body 1 (engine room) can be used efficiently.

[0068] Specifically, the piping member 10 preferably passes under the wiring member 9. In the present embodiment, the piping member 10 is located under the wiring member 9 at a position where the piping member 10 and the wiring member 9 intersect. With such a structure, even if oil drips from the piping member 10, the dripping oil is prevented from splashing onto the wiring member 9.

[0069] More specifically, in this embodiment, as a preferred mode, the wiring member 9 passes between the piping member 10 and the battery cell 4 (in the vertical direction). According to this structure, the wiring member 9 and the piping member 10 intersect in the space below the battery cell 4. That is, the wiring member 9 and the piping member 10 can be arranged in the rotating body 1 while effectively utilizing the space below the battery cell 4.

[0070] Figure 5 1 is a perspective view showing a schematic relationship between the piping component 10, the first vertical plate 142, and the second vertical plate 143. Figure 5 As shown, the first vertical plate 142 and the second vertical plate 143 have cutouts 142a and 143a recessed upward from the lower end at the rear. By providing the cutouts 142a and 143a, the pipe member 10 is arranged to penetrate each of the first vertical plate 142 and the second vertical plate 143.

[0071] In addition, the two cutouts 142a and 143a overlap each other when viewed from the left and right directions. That is, when the piping component 10 is passed through the two cutouts 142a and 143a, it is not necessary to bend the piping component 10 forcefully. In addition, in the present embodiment, the components of the revolving frame 14 (battery unit support 145, etc.) are adjacently arranged on the left side of the first longitudinal plate 142 and the second longitudinal plate 143. However, since they are configured in an inverted U shape or have cutouts, the piping component 10 can be arranged to pass through them.

[0072] In the present embodiment, the cutouts 142a and 143a are provided on the first longitudinal plate 142 and the second longitudinal plate 143, respectively, but this is merely an example. It is also possible to provide a through hole that penetrates in the left-right direction for the piping component 10 to pass through each of the first longitudinal plate 142 and the second longitudinal plate 143. That is, the first longitudinal plate 142 and the second longitudinal plate 143 are preferably structures that have cutouts or through holes for the piping component 10 to pass through, respectively. If such a structure is set, the piping component 10 can be efficiently arranged without the need to arrange the piping component 10 to avoid the first longitudinal plate 142 and the second longitudinal plate 143. In addition, if it is assumed that the piping component 10 avoids the first longitudinal plate 142 and the second longitudinal plate 143 and passes over them, it may be necessary to reduce the battery unit 4, but according to the structure of the present embodiment, such a situation can be avoided.

[0073] Furthermore, a notch for passing the piping member 10 may be provided in one of the first vertical plate 142 and the second vertical plate 143 , and a through hole for passing the piping member 10 may be provided in the other.

[0074] <3. Notes, etc.>

[0075] Various technical features disclosed in this specification can be modified in various ways without departing from the scope of the technical creation. In addition, multiple embodiments and modified examples shown in this specification can be combined and implemented within the possible scope.

[0076] <4. Notes>

[0077] An exemplary working machine of the present invention may be of the following structure (first structure), that is, a working machine having a rotating body with a working device arranged at the front, wherein the working machine comprises: a rotating frame constituting the bottom of the rotating body; a battery unit arranged on the rotating frame; a first connection portion for inputting power to the battery unit or outputting power from the battery unit; a second connection portion arranged above the battery unit and distributing power; and a wiring component passing through the bottom of the battery unit and connecting the first connection portion and the second connection portion.

[0078] It may be the following structure (second structure), that is, based on the working machine of the first structure, the first connecting part is arranged on one side surface of the battery unit, and the second connecting part is arranged on the other side surface of the battery unit which is different from the one side surface.

[0079] In the working machine of the first or second structure, the first connection portion may be included in a box-shaped first electrical device, and the first electrical device may be arranged adjacent to the battery unit.

[0080] The following structure (fourth structure) may be adopted, that is, in the working machine of any one of the first to third structures, wherein the second connection portion is included in a box-shaped second electrical device, and the second electrical device is arranged above the battery unit.

[0081] It can be the following structure (the fifth structure), that is, the working machine of any one of the first to fourth structures mentioned above comprises: a hydraulic pump, which is arranged on the above-mentioned revolving frame and is driven by an electric motor which uses the electric power of the above-mentioned battery unit as a power source; and a control valve, which is arranged on the above-mentioned revolving frame and is connected to the above-mentioned hydraulic pump via a piping component, and the above-mentioned piping component intersects with the above-mentioned wiring component.

[0082] The following structure (sixth structure) may be adopted in the working machine of the fifth structure, that is, the piping member passes under the wiring member.

[0083] In the working machine of the sixth configuration, the wiring member may pass between the piping member and the battery unit.

[0084] It may be the following structure (eighth structure), that is, the working machine of any one of the fifth to seventh structures comprises a first longitudinal plate and a second longitudinal plate, the first longitudinal plate and the second longitudinal plate extend from the front to the rear on the revolving frame, and are arranged at intervals on the left and right, the hydraulic pump is arranged on the outside of the machine body on the side opposite to the second longitudinal plate relative to the first longitudinal plate, and the control valve is arranged on the outside of the machine body on the side opposite to the first longitudinal plate relative to the second longitudinal plate.

[0085] In the working machine of the eighth configuration, the first vertical plate and the second vertical plate may each have a cutout or a through hole through which the pipe member passes.

Claims

1. A working machine comprising a rotating body with a working device arranged at the front, characterized in that: have: A revolving frame, constituting the bottom of the revolving body; A battery unit, arranged on the revolving frame; A first connection portion, inputting power to the battery unit or outputting power from the battery unit; A second connection portion is disposed above the battery unit and distributes power; as well as The wiring member passes under the battery cell and connects the first connection portion and the second connection portion.

2. The working machine according to claim 1, characterized in that: The first connection portion is disposed on one side of the surface of the battery unit. The second connection portion is disposed on a side of the battery cell that is different from the side of the one side surface.

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

4. The working machine according to claim 1 or 2, characterized in that: The second connection portion is included in a box-shaped second electrical device, and the second electrical device is arranged above the battery unit.

5. The working machine according to claim 1, characterized in that: have: a hydraulic pump, disposed on the revolving frame and driven by an electric motor powered by electricity from the battery unit; and A control valve is arranged on the revolving frame and connected to the hydraulic pump via a piping component. The piping member intersects the wiring member.

6. The working machine according to claim 5, characterized in that: The piping member passes under the wiring member.

7. The working machine according to claim 6, characterized in that: The wiring member passes between the piping member and the battery cell.

8. The working machine according to any one of claims 5 to 7, characterized in that: A first vertical plate and a second vertical plate are provided, the first vertical plate and the second vertical plate extend from the front to the rear on the revolving frame and are arranged at intervals on the left and right sides. The hydraulic pump is arranged on the outer side of the machine body on the side opposite to the second vertical plate side with respect to the first vertical plate. The control valve is arranged on the outer side of the machine body which is the side opposite to the first vertical plate side with respect to the second vertical plate.

9. The working machine according to claim 8, characterized in that: The first vertical plate and the second vertical plate each have a cutout or a through hole through which the pipe member passes.

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