Working machinery

Abstract

To provide a work machine that can minimize vibrations of multiple mounted objects housed within a storage case. [Solution] The work machine 100 includes a machine frame 20, a plurality of loads 31, a storage case 32 positioned on the slewing frame 20, a plurality of mounting plates 33 held in the storage case 32 at vertical intervals and on which the plurality of loads 31 are individually mounted, a plurality of mounting parts 34 provided on each of the plurality of mounting plates 33 and interposed between each mounting plate 33 and the storage case 32, and a plurality of mounting support parts 35 fixed to the storage case 32 so as to be located outside the outer wall surface of the storage case 32 and supporting each of the plurality of mounting parts 34.

Description

Technical Field

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

Background Art

[0002] Conventionally, a working machine including a machine body frame and a battery case disposed on the machine body frame has been known (for example, see Patent Document 1).

[0003] For example, the battery case shown in Patent Document 1 includes a plurality of housings stacked in a plurality of stages vertically and a pedestal for housing the plurality of stacked housings. Each housing houses a plurality of batteries.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] In the technique of Patent Document 1, since a plurality of housings are stacked by directly placing the upper housing on the upper surface of the housing, when the fixing of the lower housing is not sufficient, the vibration of the working machine is transmitted from the lower housing to the upper housing and is likely to vibrate. Also, since the weight of the upper housing located above is applied to the lower housing, once vibration occurs, the vibration is likely to be amplified.

[0006] The present invention has been made to solve the above problems, and an object thereof is to provide a working machine capable of suppressing vibration of a plurality of mounted objects housed in a housing case.

Means for Solving the Problems

[0007] A working machine according to one aspect of the present disclosure includes a machine frame, a plurality of payloads, a housing case disposed on the machine frame and housing the plurality of payloads, a plurality of mounting plates held in the housing case at vertical intervals and on which the plurality of payloads are individually mounted, a plurality of mounting portions provided on each of the plurality of mounting plates and interposed between each mounting plate and the housing case, and a plurality of mounting support portions fixed to the housing case so as to be located outside the outer wall surface of the housing case and supporting each of the plurality of mounting portions.

[0008] With this configuration, each of the multiple mounting plates on which the mounted objects are attached is independently supported by the housing case via a mounting section and a mounting support section. Therefore, compared to the conventional method of stacking housings containing the mounted objects in multiple layers, vibrations of each mounted object can be suppressed as much as possible. In other words, with this configuration, the load acting from each mounted object on the mounting plate acts on the housing case via the mounting section and the mounting support section, so the load from the upper housing does not cumulatively act on the lower housing as in the conventional method. As a result, the transmission and amplification of vibrations between each mounting plate can be suppressed as much as possible.

[0009] Furthermore, with the above configuration, each of the multiple mounting plates functions as a partition wall that divides the space inside the housing case vertically. Therefore, compared to, for example, arranging mounting plates in multiple housings stacked vertically, the height of the mounting plates can be kept lower. This makes it possible to keep the center of gravity of the mounted objects on each mounting plate as low as possible and suppress vibrations of each mounted object.

[0010] Furthermore, with the above configuration, since the multiple mounting support parts are located on the outside of the side wall of the housing case, it is not necessary to assemble the mounting parts to the mounting support parts in the narrow space inside the housing case. Therefore, the ease of assembly of the mounting parts to the mounting support parts can be improved.

[0011] Preferably, the housing case is provided at the height in which each of the plurality of mounting plates is located, and has a plurality of openings that allow each mounting plate to be inserted and removed from the side of the housing case.

[0012] This configuration allows multiple mounting plates to be attached to the storage case through openings provided at the height where each plate is located, thereby improving work efficiency when storing multiple items in the storage case. Specifically, by inserting a mounting plate through one opening and attaching it to the storage case, and then placing items on the attached mounting plate, and repeating this process alternately from the lower to the upper levels, multiple items can be easily stored in the storage case.

[0013] Preferably, each of the aforementioned mounting plates consists of a plurality of independent members that are independent of each other.

[0014] With this configuration, the mounting plate is composed of multiple independent components, so that the weight of each independent component is lighter than the total weight of the mounting plate. Therefore, when attaching the mounting plate to the storage case, the worker only needs to attach the lighter independent components to the storage case in multiple steps, thus reducing the weight burden on the worker. This improves the efficiency of assembly.

[0015] Preferably, the side wall of the housing case has an opening that can be opened horizontally to accept the multiple loads.

[0016] This configuration minimizes interference between the loaded object and the inner wall of the storage case when loading the object into the case. For example, if an opening is provided only on the top of the storage case, the loaded object must be suspended by a wire rope or the like and lowered from the opening along the narrow space inside the storage case to a predetermined height. In this case, there is a risk that the loaded object will interfere with the inner wall of the storage case during its descent. In contrast, with the above configuration, the height of the loaded object can be adjusted in the wide space outside the storage case, and then the loaded object can be moved horizontally and loaded into the storage case from the opening, thus minimizing interference between the loaded object and the inner wall of the storage case. Therefore, the operation of loading the object into the storage case can be performed easily and quickly.

[0017] Preferably, the aforementioned work machine is further provided with an open-side reinforcing member that is detachably attached to the housing case and connects a pair of horizontally opposing edges of the housing case with respect to the opening.

[0018] With this configuration, by attaching the opening-side reinforcing member to the housing case, the reduction in strength caused by providing an opening in the housing case can be suppressed. Furthermore, since the opening-side reinforcing member is configured to be detachable from the housing case, it becomes possible to load and unload the contents through the opening by removing the opening-side reinforcing member.

[0019] The housing case is configured to have a pair of horizontally opposing side plates and a back plate connecting the edges of the pair of side plates, and to have the opening on the front side opposite to the back plate, the plurality of mount support parts are located outside the outer surfaces of the pair of side plates that constitute the outer wall surface of the housing case, the opening side reinforcing member is configured to connect a pair of opposing edges of the pair of side plates that straddle the opening, and the plurality of mounting plates have a plate body that straddles the pair of side plates and divides the space inside the housing case in multiple stages in the vertical direction, and a pair of protruding plate parts connected to the plate body and located outside the pair of side plates, and it is preferable that the pair of protruding plate parts are supported by the mount support parts via the mount parts.

[0020] This configuration allows the mounting plate to be inserted into the housing case through multiple openings formed in a pair of side plates, and also allows the mounted object to be inserted into the housing case from the opening on the front side opposite the back plate of the pair of side plates. Furthermore, the opening-side reinforcing member connects the edges of the opening-side of the pair of side plates, preventing a reduction in strength caused by the creation of the opening.

[0021] Preferably, the work machine further has a plurality of trays on which the plurality of loads are each placed, the plurality of loads are each mounted on the plurality of mounting plates via the plurality of trays, and each of the plurality of trays has an insertion hole through which a suspension member for suspending each tray can be inserted.

[0022] According to this configuration, instead of directly suspending the mounted object by a suspension lower member (such as a wire rope or a metal fitting), it is suspended through a tray that is easier to modify in design compared to the mounted object. Thus, the suspension position of the tray can be easily changed. Therefore, while minimizing the gap between the mounted object and the inner wall surface of the storage case, it is possible to make the suspension position fit exactly within this gap when inserting the tray into the storage case. Thus, it is possible to minimize the gap between the mounted object and the inner wall surface of the storage case and make the storage case more compact.

[0023] The working machine includes an electric actuator and a plurality of battery units that supply power to the electric actuator. It is preferable that the plurality of mounted objects are the plurality of battery units.

[0024] In a working machine equipped with a plurality of battery units in this way, from the perspective of space efficiency, it is preferable to arrange the battery units in multiple stages in the vertical direction. However, in this case, each battery unit is more likely to vibrate. Since the battery unit has relatively low vibration resistance, the configuration of the present invention is particularly useful.

Advantages of the Invention

[0025] According to the present invention, there is provided a working machine that suppresses the vibration of a plurality of mounted objects accommodated in a storage case in multiple stages in the vertical direction as much as possible.

Brief Description of the Drawings

[0026] [Figure 1] FIG. 1 is a side view showing the working machine according to the present embodiment. [Figure 2] FIG. 2 is a plan view of the main frame of the working machine viewed from above with the cover of the working machine removed. [Figure 3] FIG. 3 is a perspective view showing the battery device. [Figure 4] FIG. 4 is a perspective view showing the battery case. [Figure 5] FIG. 5 is a perspective view showing the tray. [Figure 6] Figure 6 is a perspective view showing the mounting plate. [Figure 7] Figure 7 is a longitudinal cross-sectional view showing the mounting structure of the vibration-damping mount set. [Figure 8] Figure 8 is an enlarged view illustrating the configuration of the lowest mounting support section, and corresponds to section VIII in Figure 3. [Figure 9] Figure 9 is an enlarged view illustrating the configuration of the mount support located above the lowest section, and corresponds to section IX in Figure 3. [Figure 10] Figure 10 is an explanatory perspective view illustrating the assembly method of the battery device. [Figure 11] Figure 11 is an explanatory perspective view illustrating the assembly method of the battery device. [Figure 12] Figure 12 is a schematic diagram showing the configuration of the battery device. [Figure 13] Figure 13 is a schematic diagram showing the configuration of the battery device in Comparative Example 1. [Figure 14] Figure 14 is a schematic diagram showing the configuration of the battery device in Comparative Example 2. [Figure 15] Figure 15 is a schematic plan view of the battery device in this embodiment. [Modes for carrying out the invention]

[0027] Embodiments of this disclosure will be described with reference to the drawings. Figure 1 is a side view showing a work machine 100 according to this embodiment.

[0028] The work machine 100 comprises a lower traveling body 1 including a traveling device, an upper rotating body 2 supported by the lower traveling body 1 so as to be able to rotate relative to the lower traveling body 1 around a vertically extending pivot axis Z, and a work attachment 3 supported by the upper rotating body 2. Although the work machine 100 in this embodiment is a hydraulic excavator, the work machine in this disclosure is not limited to a hydraulic excavator and may be other work machines such as cranes and bulldozers.

[0029] The work attachment 3 includes a boom 4 that is pivotably mounted on the upper slewing body 2, an arm 5 that is rotatably mounted on the boom 4, and a tip attachment 6 that is rotatably mounted on the arm 5. In this embodiment, the tip attachment 6 is a bucket, but the tip attachment may be other tip attachments such as a grapple, fork, or crusher.

[0030] The work machine 100 comprises a plurality of hydraulic actuators, a hydraulic pump 61 that supplies hydraulic fluid to the plurality of hydraulic actuators, an electric motor 62 (an example of an electric actuator) that drives the hydraulic pump 61, and a battery device 30 that supplies power to the electric motor 62 via an inverter for controlling the electric motor 62.

[0031] Each of the multiple hydraulic actuators operates by receiving a supply of hydraulic fluid discharged from a hydraulic pump 61. The multiple hydraulic actuators include a boom cylinder 7 for raising and lowering the boom 4, an arm cylinder 8 for rotating the arm 5, a tip attachment cylinder 9 for rotating the tip attachment 6, a slewing motor (not shown) for slewing the upper slewing body 2 relative to the lower traveling body 1, and a traveling motor (not shown) included in the traveling device of the lower traveling body 1.

[0032] The upper rotating body 2 includes a rotating frame 20, a cab 11 supported by the rotating frame 20, and a cover 12 supported by the rotating frame 20. The cab 11 is located, for example, at the front of the rotating frame 20, and the cover 12 is located, for example, at the rear of the rotating frame 20. The rotating frame 20 is an example of an aircraft frame in this disclosure.

[0033] The slewing frame 20 is a member that is rotatably supported by the lower traveling body 1. The slewing frame 20 includes a main frame 21 and a raising body 22. The main frame 21 has an upper surface large enough to support the cab 11 and cover 12. The battery device 30 is supported on the upper surface of the main frame 21.

[0034] Figure 2 is a plan view of the main frame 21 from above with the cover 12 of the work machine 100 removed. Figure 2 also shows the directional axes indicating front, back, left, and right relative to the work machine 100.

[0035] The lifting unit 22 supports the boom 4 so that it can be raised and lowered. The lifting unit 22 rises from the main frame 21 and extends forward and backward. In this embodiment, the lifting unit 22 includes a pair of upright plates 23 that are spaced apart from each other and face each other on the left and right sides. Each of the pair of upright plates 23 is a plate-shaped member that rises from the main frame 21 and extends forward and backward from a front end 23F to a rear end 23R. Each of the pair of upright plates 23 includes a front portion 23A that includes the portion that supports the boom 4, and a rear portion 23B that is located behind the front portion 23A and has a lower upright height from the main frame 21 than the front portion 23A.

[0036] As shown by the dashed lines in Figure 1, each of the pair of upright plates 23 in this embodiment includes an intermediate portion between the front portion 23A and the rear portion 23B, and this intermediate portion has a shape such that the upright height gradually decreases as it moves towards the rear. However, this intermediate portion does not necessarily have to have a shape such that the upright height gradually decreases as it moves towards the rear.

[0037] A seat portion 24 is formed on the upper surface of the main frame 21, on which the battery device 30 is installed. In plan view, the seat portion 24 has a pair of front and rear boss portions 24a that extend in the left-right direction and intersect with the rear portions 23B of a pair of upright plates 23. Each boss portion 24a is a rectangular parallelepiped that is elongated in the left-right direction. A pair of screw holes 24b are formed at both ends of each boss portion 24a in the left-right direction for fixing the battery device 30.

[0038] [Overall configuration of battery unit 30] Figure 3 is a perspective view showing the battery device 30. The battery device 30 comprises a plurality of battery units 31 arranged in multiple stages in the vertical direction, a battery case 32 (an example of a housing case) that houses the plurality of battery units 31, a plurality of mounting plates 33 on which each of the plurality of battery units 31 is mounted, a plurality of mounting portions 34 provided for each of the plurality of mounting plates 33, a plurality of mounting support portions 35 fixed to the outer wall surface of the battery case 32 and supporting each of the plurality of mounting portions 34, an open-side reinforcing member 37, and a wiring connection unit 38.

[0039] Each of the multiple battery units 31 houses a structure that outputs the stored power. The battery unit 31 is an example of a mounted device of this disclosure. Multiple mounting plates 33 are arranged to partition the space within the battery case 32 in a shelf-like manner across multiple levels in the vertical direction. Each of the multiple battery units 31 is housed in each level of the battery case 32, resting on the upper surface of each mounting plate 33. Multiple mounting portions 34 are provided on each mounting plate 33. In this example, each mounting portion 34 has the function of preventing vibrations from the battery case 32 from being transmitted to the mounting plates 33.

[0040] [Configuration of Battery Case 32] Figure 4 is a perspective view showing the battery case 32. In the following description, as shown in Figures 4, 6, 8 to 15, the front side of the case, the rear side of the case, the left side of the case, and the right side of the case are defined with respect to the battery case 32. These directional definitions are shown for convenience in explaining the structure and assembly method of the battery device 30 and do not limit the configuration of the work machine 100 of the present invention.

[0041] The battery case 32 has a roughly rectangular parallelepiped shape that opens to the top and front of the case. Specifically, the battery case 32 has a bottom plate 321, a pair of side plates 322, a back plate 323, and a pair of upper end reinforcing beams 324 (not shown in Figure 4; see Figure 3).

[0042] The bottom plate 321 is a rectangular plate that is long in the front-to-back direction of the case. The bottom plate 321 has a plurality of openings 321a that penetrate in the vertical direction. By providing these plurality of openings 321a, the weight of the bottom plate 321 is reduced. These plurality of openings 321a may also be used as insertion openings for inserting various wires.

[0043] Legs 325 are fixed to each of the four corners of the underside of the base plate 321. Each leg 325 has a rectangular seat plate 325a and connecting ribs 325b that rise from the upper surface of the seat plate 325a and connect to the base plate 321. The seat plate 325a is fixed to the seat portion 24 on the main frame 21 with bolts.

[0044] Each of the pair of side plates 322 and back plate 323 is a plate-like member that rises upward from the edge of the bottom plate 321. The pair of side plates 322 are spaced apart from each other in the left-right direction of the case. The back plate 323 is a plate-like member that is positioned to connect the rear edges of the pair of side plates 322.

[0045] The back panel 323 has multiple (four in this example) openings 323a arranged vertically. These multiple openings 323a contribute to reducing the weight of the back panel 323. Furthermore, these multiple openings 323a may also be used as through-holes for various types of wiring.

[0046] The pair of side plates 322 have multiple openings 322a formed therein, which allow for the insertion and removal of independent plate portions 331 (see Figure 6, described later) that constitute the mounting plate 33. The multiple openings 322a are provided in multiple stages, corresponding to the height at which each of the multiple mounting plates 33 is located. Each stage of the openings 322a consists of a pair of front and rear opening holes 322d. Each pair of opening holes 322d penetrates each side plate 322 in the thickness direction (i.e., the left-right direction of the case). Each pair of opening holes 322d is formed in a rectangular shape that is elongated in the front-rear direction of the case. The front-rear dimension of each opening hole 322d is larger than the front-rear dimension of each independent plate portion 331 (see Figure 6, described later) that constitutes the mounting plate 33. Also, the vertical dimension of each opening hole 322d is larger than the thickness of each independent plate portion 331.

[0047] Furthermore, on the front edge of the case of the left side plate 322 of the pair of side plates 322, three fixed plate portions 322b are formed for fixing the left end of the open-side reinforcing member 37. The three fixed plate portions 322b are formed at intervals in the vertical direction. Each fixed plate portion 322b consists of a trapezoidal plate portion that protrudes to the front of the case. Also, on the front edge of the case of the right side plate 322 of the pair of side plates 322, a fixed plate portion 322c is formed for fixing the right end of the open-side reinforcing member 37. The fixed plate portion 322c consists of a rectangular plate portion that protrudes to the right side of the case from the front edge of the case of the right side plate 322 and extends over its entire length in the vertical direction.

[0048] A pair of upper reinforcing beams 324 (not shown in Figure 4; see Figure 3) connect the upper ends of a pair of side plates 322. The pair of upper reinforcing beams 324 are positioned across the pair of side plates 322, spaced apart from each other in the front-to-back direction of the case. Both ends of each upper reinforcing beam 324 are fixed to each side plate 322 by a pair of bolts 373. By providing a pair of upper reinforcing beams 324, the strength of the upper end of the battery case 32 is improved.

[0049] In the battery case 32, the horizontally opposite side of the back plate 323, that is, the front side of the case, is open. In other words, an opening K is provided at the front end of the battery case 32. The battery case 32 allows for the insertion of multiple battery units 31 through this opening K. A transport tray 36 (see Figure 5, described later) is used when inserting each battery unit 31. Each battery unit 31 is suspended by a crane or the like using a suspension member such as a wire rope and inserted into the battery case 32 through the opening K via the tray 36. Then, each battery unit 31 is mounted on its corresponding mounting plate 33 via the tray 36. The opening K of the battery case 32 is closed by the opening-side reinforcing member 37, described later, after all battery units 31 have been inserted (stored).

[0050] [Configuration of Tray 36] Figure 5 is a perspective view showing the tray 36. The tray 36 has a rectangular tray body 361 corresponding to the planar shape of the battery unit 31, and upright walls 362 that rise from both longitudinal ends of the tray body 361. The tray body 361 is configured to allow the battery unit 31 to be mounted on its upper surface. The tray body 361 has a plurality of positioning holes 361a (eight in this example) for positioning relative to the mounting plate 33. Each pair of upright walls 362 has a pair of insertion holes 362a (a total of four insertion holes 362a) that are spaced apart from each other in the tray width direction. The front pair of insertion holes 362a are each formed in the shape of a circular hole. The rear pair of insertion holes 362a are each formed in the shape of an elongated hole that is long in the vertical direction. Each insertion hole 362a is configured to allow a wire rope to be inserted as a suspension member for suspending the tray 36. Furthermore, the rope used to suspend the tray 36 is not limited to a metal rope such as a wire rope; for example, a high-strength nylon rope or fiber rope may also be used. Also, the suspension member is not limited to a rope; it may be a suspension fitting or the like.

[0051] [Configuration of mounting plate 33] Figure 6 is a perspective view showing one of the multiple mounting plates 33. Since the shapes of the multiple mounting plates 33 are the same, only one of them will be described here. The mounting plate 33 consists of a pair of independent plate sections 331 that are independent of each other. The pair of independent plate sections 331 are spaced apart from each other in the front-rear direction of the case. Each independent plate section 331 is supported by a pair of side plates 322 via a mounting section 34 and a mounting support section 35.

[0052] Specifically, each independent plate portion 331 has a plate body portion 331a and a pair of protruding plate portions 331b that protrude from the outer edge of the plate body portion 331a to both sides in the left-right direction of the case.

[0053] The plate body 331a has several (two in this example) openings 331c for weight reduction. The two openings 331c penetrate through the plate body 331a in the thickness direction. Each pair of openings 331c forms a right-angled triangle, facing each other across one diagonal of the plate body 331a. Each opening 331c may be used as an opening for inserting wiring or the like.

[0054] Protruding plate portions 331f are formed at the front, back, left, and right corners of the main plate portion 331a. Each protruding plate portion 331f has a positioning hole 331d. The position of each positioning hole 331d corresponds to the position of each positioning hole 361a formed in the tray 36 (see Figure 5). Positioning pins 332 are fitted into each positioning hole 331d and each positioning hole 361a formed in the tray 36 to position the tray 36 relative to the mounting plate 33.

[0055] Each of the pair of protruding plate portions 331b is supported by a vibration-damping mount set 341. Each protruding plate portion 331b has a through hole 331e through which a fixing bolt 342 of the vibration-damping mount set 341 (see Figure 7, described later) passes.

[0056] [Configuration of the mounting section 34] As described above, the multiple mounting sections 34 are provided for each of the multiple mounting plates 33. In this example, each mounting section 34 is composed of four vibration-damping mounting sets 341 (see Figure 3). The four vibration-damping mounting sets 341 consist of two vibration-damping mounting sets 341 that support the front independent plate section 331 and two vibration-damping mounting sets 341 that support the rear independent plate section 331.

[0057] Figure 7 is a longitudinal cross-sectional view showing the mounting structure of each vibration-damping mount set 341.

[0058] Each vibration-damping mount set 341 includes an upper vibration-damping member 341a, a lower vibration-damping member 341b, and a backing plate 341c. Each vibration-damping mount set 341 is fixed to the mount support plate 351 (mount support part) by fixing bolts 342 while supporting the independent plate portion 331. In the example in Figure 7, the number of vibration-damping members constituting the vibration-damping mount set 341 is two, but this is not limited to this; there may be three or more, or even just one. Furthermore, the backing plate 341c is not necessarily required, and a configuration without the backing plate 341c is also possible.

[0059] The upper vibration damping member 341a and the lower vibration damping member 341b are made of vibration-damping rubber material. The upper vibration damping member 341a and the lower vibration damping member 341b are positioned to sandwich the protruding plate portion 331b of the independent plate portion 331 from above and below. The upper vibration damping member 341a is located between the backing plate 341c and the protruding plate portion 331b provided on the independent plate portion 331. The lower vibration damping member 341b is located between the protruding plate portion 331b and the mount support plate 351 (mount support portion 35).

[0060] The fixing bolt 342 is positioned to penetrate vertically through the axial centers of the backing plate 341c, the upper vibration damping member 341a, and the lower vibration damping member 341b. The fixing bolt 342 is then screwed into the threaded hole 351a formed in the mount support plate 351, with its head in contact with the upper surface of the backing plate 341c.

[0061] [Configuration of the mounting support section 35] Returning to Figure 4, the multiple mounting support sections 35 are positioned at heights corresponding to each stage of the battery case 32. Each mounting support section 35 has four mounting support plates 351 located outside the outer wall surface of the battery case 32. Specifically, the four mounting support plates 351 are located outside the outer surface (outer wall surface) of the pair of side plates 322 of the battery case 32. The four mounting support plates 351 consist of two mounting support plates 351 adjacent to the left side plate 322 of the case and spaced apart from each other in the front-rear direction of the case, and two mounting support plates 351 adjacent to the right side plate 322 of the case and spaced apart from each other in the front-rear direction of the case. The two mounting support plates 351 on the left and the two mounting support plates 351 on the right are positioned at the same height and are arranged symmetrically with respect to the left-right center line of the battery case 32 in a plan view. The mounting support plates 351 are provided at positions corresponding to each opening 322d (opening 322a) formed in the battery case 32. The height of the upper surface of the mounting support plate 351 is approximately the same as the height of the lower edge of each opening hole 322d.

[0062] In this example, the components constituting the mount support plate 351 differ between the lowest mount support 35 and the other mount support 35 located above the lowest one.

[0063] Figure 8 is an enlarged view illustrating the configuration of the lowest mounting support section 35, and corresponds to section VIII in Figure 3. Figure 9 is an enlarged view illustrating the configuration of the mounting support section 35 located above the lowest section, and corresponds to section IX in Figure 3.

[0064] In the lowest mounting support section 35, as shown in Figure 8, the four mounting support plates 351 (only one is shown in Figure 8) are each composed of a part of the bottom plate 321. Specifically, the bottom plate 321 has four trapezoidal plate sections 321b that function as four mounting support plates 351. The four trapezoidal plate sections 321b consist of two trapezoidal plate sections 321b formed on the left side of the bottom plate 321 at intervals from each other in the front-to-back direction of the case, and two trapezoidal plate sections 321b formed on the right side of the bottom plate 321 at intervals from each other in the front-to-back direction of the case. The two trapezoidal plate sections 321b on the left side of the case and the two trapezoidal plate sections 321b on the right side of the case all protrude outward in the left-to-right direction of the case beyond the pair of side plates 322.

[0065] In the other mount support sections 35 located above the lowest section, as shown in Figure 9, each of the four mount support plates 351 (only one is shown in Figure 9) is constructed using four bracket members 352 fixed to the outer surface of the battery case 32. The four bracket members 352 consist of two bracket members 352 fixed to the outer surface of the left side plate 322 of the case, and two bracket members 352 fixed to the outer surface of the right side plate 322 of the case.

[0066] Each bracket member 352 has a horizontal plate portion 352a that functions as a mount support plate 351 and a pair of ribs 352b that connect the lower surface of the horizontal plate portion 352a to the outer surface of each side plate 322. Each of the pair of ribs 352b is made of a plate-like member. The pair of ribs 352b are arranged at intervals in the front-rear direction of the battery case 32, with the sides of the plate-like members constituting each rib parallel to each other. When viewed from the front-rear direction of the battery case 32, the pair of ribs 352b are formed to appear as a right-angled triangle, with the side portion of each rib 352b that connects to the horizontal plate portion 352a and the side portion of each rib 352b that connects to the side plate 322 of the battery case 32 forming a right angle.

[0067] [Configuration of the open-side reinforcing member 37] Returning to Figure 3, let's describe the opening-side reinforcing member 37. The opening-side reinforcing member 37 is positioned to cover the opening K of the battery case 32 (the front part of the case in this example). The opening-side reinforcing member 37 connects a pair of opposing edges of the battery case 32 that are in the horizontal direction (left-right direction of the case in this example) with the opening K in between.

[0068] Specifically, the open-side reinforcing member 37 has a reinforcing main body portion 37a, a left end connecting portion 37b, three fixing plate portions 37c, and a right end connecting portion 37d. The reinforcing main body portion 37a has three horizontal plate portions arranged vertically at intervals on the front side of the battery case 32. An opening hole 37e is formed between the three horizontal plate portions of the reinforcing main body portion 37a. This opening hole 37e may be used as an insertion opening for inserting electrical wiring.

[0069] The left end connecting portion 37b extends in a zigzag pattern vertically to connect the left ends of the three horizontal plate portions of the reinforcing main body portion 37a. The left end connecting portion 37b is a plate-like portion that slopes approximately 45° toward the rear of the case from the edge of the reinforcing main body portion 37a toward the left side of the case.

[0070] The three fixing plate portions 37c are connected to the leading edge of the left end connecting portion 37b. The three fixing plate portions 37c are positioned to overlap from the left side of the battery case 32 with the three fixed plate portions 322b formed on the left side plate 322 of the case. Each of the three fixing plate portions 37c is then fixed to the three fixed plate portions 322b (see Figure 4) by a pair of bolts 372.

[0071] The right-end connecting portion 37d is a plate-like portion that extends linearly in the vertical direction to connect the right ends of the three horizontal plate portions of the reinforcing main body portion 37a. The right-end connecting portion 37d is positioned to overlap the fixed plate portion 322c (see Figure 4) formed on the right side plate 322 of the battery case 32 from the front side of the case. The right-end connecting portion 37d is fixed to the fixed plate portion 322c by a plurality of bolts 371 arranged vertically.

[0072] [Configuration of Wiring Connection Unit 38] Next, the wiring connection unit 38 will be described with reference to Figure 3. The wiring connection unit 38 is a device for electrically connecting multiple battery units 31 and an inverter for controlling the rotation of the electric motor 62. That is, the charging and discharging wiring extending from each battery unit 31 is connected to the wiring connection unit 38, and the wiring connection unit 38 and the inverter that controls the electric motor 62 are connected via a single power supply wiring. Specifically, the wiring connection unit 38 has a junction box 381, a subbox 382, ​​and a box bracket 383. The box bracket 383 has a U-shaped cross-section that opens upwards. The box bracket 383 houses the subbox 382 inside and supports the junction box 381 from below. The box bracket 383 is supported on the upper surface of a pair of upper end reinforcing beams 324 provided at the upper end of the battery case 32 via a plurality of vibration-damping mount sets 384. Since the configuration of each vibration-damping mount set 384 is the same as that of the vibration-damping mount set 341 provided on the mounting plate 33 described above, its explanation will be omitted here.

[0073] [Method for assembling the battery unit 30] Next, the assembly method of the battery device 30 will be described. Figures 10 and 11 are explanatory perspective views illustrating the assembly method of the battery device 30.

[0074] When assembling the battery device 30, the process involves alternately repeating the steps of installing the mounting plate 33 inside the battery case 32, and then mounting the battery unit 31 on the upper surface of the mounting plate 33. It is preferable to perform these steps sequentially from the bottom to the top of the battery case 32.

[0075] Figure 10 shows the state in which the mounting plate 33 is installed on the lowest part of the battery case 32. When installing the mounting plate 33, a pair of independent plate sections 331 are inserted into the battery case 32 from the outside of the battery case 32 through the front and rear openings 322a, and the position of each independent plate section 331 is adjusted. This adjustment is performed so that the pair of protruding plate sections 311b of each independent plate section 331 face the upper side of the mount support plate 351 provided on the battery case 32. When the adjustment is complete, the pair of protruding plate sections 311b protrude to the outside of the battery case 32. The worker then assembles the vibration-damping mount set 341 to the pair of protruding plate sections 311b and fixes the vibration-damping mount set 341 to the mount support plate 351 with fixing bolts 342 (see Figure 7). This completes the assembly of the mounting plate 33 (pair of independent plate sections 331) to the battery case 32.

[0076] After the assembly of the mounting plate 33 is completed, as shown in Figure 10, the battery unit 31 is mounted on the tray 36 and the tray 36 is suspended by a crane or the like via wire ropes (not shown) as suspension members through each insertion hole 362a of the tray 36. The tray 36 is then moved to the insertion preparation position, which is the front side of the battery case 32. After moving the tray 36 to the insertion preparation position, the orientation of the tray 36 is adjusted by operating the crane or the like so that the longitudinal direction of the tray 36 (i.e., the longitudinal direction of the battery unit 31) coincides with the front-to-back direction of the case. After moving the tray 36 to the insertion preparation position, the height of the tray 36 is adjusted by operating the crane or the like so that the position of the lower surface of the tray 36 is slightly above the upper surface of the mounting plate 33 on which the tray 36 will be mounted. After the orientation and height of the tray 36 have been adjusted after moving the tray 36 to the insertion preparation position, the tray 36 is moved from the front side of the case to the rear side of the case by operating the crane or the like. As a result, the tray 36 is inserted into the battery case 32 through the opening K on the front side of the battery case 32. After inserting the tray 36 into the battery case 32, the tray 36 is lowered while suspended from a wire rope. During the lowering of the tray 36, the orientation of the tray 36, the front-to-back direction of the tray 36, and the left-to-right direction of the tray 36 are adjusted by the operation of a crane or the like, so that the positions of the positioning holes 361a (see Figure 5) formed in the tray 36 align with the positions of the positioning holes 331d (see Figure 6) formed in the mounting plate 33, and the tray 36 is mounted on the mounting plate 33 together with the battery unit 31. Furthermore, after the tray 36 is mounted on the mounting plate 33 together with the battery unit 31, the positioning pins 332 are fitted into the positioning holes 331d and the positioning holes 361a formed in the tray 36. Thus, the mounting of the battery unit 31 onto the mounting plate 33 is completed. After this mounting process is complete, the mounting plate 33 is assembled to the next level of the battery case 32 (the second level from the bottom in the example in Figure 11), as shown in Figure 11.Then, by alternately repeating the assembly of the mounting plate 33 and the installation of the battery units 31 in order towards the top of the battery case 32, all the battery units 31 are housed inside the battery case 32. After all the battery units 31 have been housed, a pair of upper end reinforcing beams 324 are attached to the upper end of the battery case 32 and the wiring connection unit 38 is fixed to the upper side thereof, and the aforementioned open side reinforcing member 37 is attached to the open side of the battery case 32 (the front side of the case in this example). With this, the assembly of the battery device 30 is completed.

[0077] [Effects and Effects] As described above, in this embodiment, the work machine 100 includes a slewing frame 20, a plurality of battery units 31, a battery case 32 arranged on the slewing frame 20, a plurality of mounting plates 33 held at vertical intervals on the battery case 32 and on which each of the plurality of battery units 31 is individually mounted, a plurality of mounting portions 34 provided on each of the plurality of mounting plates 33 and interposed between each mounting plate 33 and the battery case 32, and a plurality of mounting support portions 35 fixed to the battery case 32 so as to be located outside the outer wall surface of the battery case 32 and supporting each of the plurality of mounting portions 34.

[0078] With this configuration, each of the multiple mounting plates 33 on which the battery units 31 are mounted is independently supported by the battery case 32 via the mounting portion 34 and the mounting support portion 35. Therefore, compared to the conventional method of stacking multiple housings containing the battery units 31, vibration of each battery unit 31 can be suppressed as much as possible. In other words, with this configuration, the load acting from each battery unit 31 on each mounting plate 33 acts on the battery case 32 via the mounting portion 34 and the mounting support portion 35, so the load of the upper housing does not cumulatively act on the lower housing as in the conventional method. As a result, the transmission and amplification of vibrations between each battery unit 31 can be suppressed as much as possible.

[0079] Furthermore, with the above configuration, each of the mounting plates 33 functions as a partition wall that divides the space inside the battery case 32 vertically, so the height of the mounting plates 33 can be kept low.

[0080] This point can be easily understood by comparing Figures 12 and 13. Figure 12 is a schematic diagram showing the configuration of the battery device 30 of this embodiment, and Figure 13 is a schematic diagram showing the configuration of the battery device 1030 of Comparative Example 1. In Comparative Example 1 shown in Figure 13, the same components as those of this embodiment are indicated by adding the reference numeral 1000.

[0081] As shown in Figure 13, in Comparative Example 1, mounting plates 1033 are placed in each of multiple housings that are stacked vertically by plates 1321 that function as partition walls dividing the housing vertically. In contrast, in this embodiment, as shown in Figure 12, the multiple mounting plates 33 function as partition walls dividing the space inside the battery case 32 vertically. Therefore, the position of the mounting plates 33 can be kept lower compared to the case in Comparative Example 1 where the mounting plates 1033 are provided separately from the plates 1321 that partition the housing. This makes it possible to keep the center of gravity of the battery units 31 mounted on each mounting plate 33 as low as possible and suppress vibration of each battery unit 31.

[0082] Furthermore, with the above configuration, the mounting portion 34 of each mounting plate 33 is supported by the mounting support portion 35 on the outside of the side plate 322 (side wall) of the battery case 32, so that the mounting portion 34 can be easily attached to the mounting support portion 35.

[0083] This point can be easily understood by comparing Figures 12 and 14. Figure 14 is a schematic diagram showing the configuration of the battery device 2030 of Comparative Example 2. In Comparative Example 2 shown in Figure 14, the same components as those in this embodiment are indicated by adding the reference numeral 2000.

[0084] In Comparative Example 2 shown in Figure 14, the part supporting the mount portion 2034 is located inside the side plate 2322 of the battery case 2032. Therefore, the assembly of the mount portion 2034 must be performed in the narrow space inside the battery case 32, resulting in poor workability. In contrast, in the configuration of this embodiment shown in Figure 12, the mount support portion 35 is located outside the side plate 2322 of the battery case 2032, so the assembly of the mount portion 34 to the mount support portion 35 can be performed in the wide space outside the battery case 32. Thus, the workability of assembling the mount portion 34 can be improved.

[0085] Furthermore, in Comparative Example 2, a large dead space is created between the pair of side plates 2322 of the battery case 2032 and the battery unit 31, which leads to the problem of the battery case 32 becoming larger.

[0086] In contrast, in this embodiment, as shown in Figure 12, by providing the vibration-damping mount set 341 on the outside of the battery case 32, the dead space between the pair of side plates 322 of the battery case 32 and the battery unit 31 can be reduced as much as possible, thereby making the battery case 32 smaller. As a result of reducing the dead space inside the battery case 32, as shown in Figure 15 (schematic plan view of the battery device 30), an effective space S is formed between adjacent vibration-damping mount sets 341, and this effective space S can be used for wiring and as space for arranging other equipment.

[0087] Furthermore, in this embodiment, the battery case 32 is provided at the height where each of the multiple mounting plates 33 is located, and has multiple openings 322a that allow each mounting plate 33 to be inserted and removed from the side of the battery case 32.

[0088] With this configuration, multiple mounting plates 33 can be attached to the battery case 32 through openings 322a provided at the height where each plate is located, thereby improving the workability when housing multiple battery units 31 inside the battery case 32. Specifically, by inserting the mounting plates 33 through the openings 322a and attaching them to the battery case 32, and then mounting the battery units 31 on the attached mounting plates 33, and repeating this process alternately from the lower to the upper levels, multiple battery units 31 can be easily housed inside the battery case 32.

[0089] Furthermore, in this embodiment, each of the multiple mounting plates 33 consists of a plurality of independent plate portions 331.

[0090] With this configuration, the mounting plate 33 is composed of multiple independent plate sections 331, so that the weight of each independent plate section 331 is lighter than the total weight of the mounting plate 33. Therefore, when attaching the mounting plate 33 to the battery case 32, the worker only needs to attach the lighter independent plate sections 331 to the battery case 32 in multiple steps, thus reducing the weight burden on the worker. This improves the efficiency of assembly.

[0091] Furthermore, in this embodiment, the battery case 32 has an opening K that can be opened horizontally to accommodate multiple battery units 31.

[0092] This configuration makes it possible to minimize interference between the battery unit 31 and the inner wall surface of the battery case 32 when housing the battery unit 31 in the battery case 32. That is, for example, if an opening is provided only on the upper side of the battery case 32, it is necessary to suspend the battery unit 31 with a wire rope or the like as a suspension member and lower it from the opening to a predetermined height along the narrow space inside the battery case 32. In this case, there is a risk that the battery unit 31 will interfere with the inner wall surface of the battery case 32 while it is lowering. In contrast, with the above configuration, after adjusting the orientation and height of the battery unit 31 in the wide space outside the battery case 32, the battery unit 31 can be moved horizontally and housed inside the battery case 32 from the opening K, so interference between the battery unit 31 and the inner wall surface of the battery case 32 is unlikely to occur. Therefore, the operation of inserting the battery unit 31 into the battery case 32 can be performed easily and quickly.

[0093] Furthermore, in this embodiment, the work machine 100 is detachably attached to the battery case 32 and further includes an open-side reinforcing member 37 that connects a pair of horizontally opposing edges of the open portion K in the battery case 32.

[0094] With this configuration, by attaching the opening-side reinforcing member 37 to the battery case 32, the reduction in strength caused by providing an opening K in the battery case 32 can be suppressed. Furthermore, since the opening-side reinforcing member 37 is configured to be detachable from the battery case 32, the battery unit 31 can be inserted into and removed through the opening K by removing the opening-side reinforcing member 37.

[0095] Furthermore, in this embodiment, the work machine 100 further has a plurality of trays 36 on which a plurality of battery units 31 are each placed. The plurality of battery units 31 are each mounted on a plurality of mounting plates 33 via the plurality of trays 36. Each of the plurality of trays 36 has an insertion hole 362a through which a wire rope, which serves as a suspension member for suspending each tray 36, can be inserted.

[0096] With this configuration, instead of directly suspending the battery unit 31 with a wire rope as a suspension member, it is suspended via a tray 36, which is easier to modify than the battery unit 31, allowing the suspension position of the tray 36 to be easily changed. Therefore, the gap between the battery unit 31 and the inner wall surface of the battery case 32 can be kept to a minimum, while the suspension position of the tray 36 can be positioned to fit perfectly into this gap when it is inserted into the battery case 32. Thus, the gap between the battery unit 31 and the inner wall surface of the battery case 32 can be reduced as much as possible, making the battery case 32 more compact.

[0097] [Other embodiments] Although the working machine 100 according to an embodiment of the present invention has been described above, the present invention is not limited thereto, and for example, the following modified embodiments can be adopted.

[0098] (A) Regarding the onboard equipment In the above embodiment, the mounted object is a battery unit 31, but it is not limited to this. That is, the mounted object may be, for example, a storage battery, a fuel cell, another type of battery, or a device other than a battery.

[0099] (B) Regarding the mounting plate In the above embodiment, the mounting plate 33 is composed of two independent plate portions (independent members), but it is not limited to this and may be composed of three or more independent members.

[0100] (C) About the tray In the above embodiment, multiple battery units 31 are mounted on the mounting plate 33 via trays 36, but this is not the only configuration. In other words, the trays 36 are not necessarily required, and each battery unit 31 may be mounted directly on each mounting plate 33.

[0101] (D) Regarding the aircraft frame In the above embodiment, a slewing frame 20 was exemplified as the machine frame, but the machine frame in this disclosure is not limited to the slewing frame 20 and may be other frames that constitute part of the work machine 100.

[0102] (E) How to assemble the battery device In the above embodiment, the process of assembling the mounting plates 33 into the battery case 32 and the process of mounting the battery unit 31 onto the mounting plates 33 are performed alternately. However, this is not the only method. For example, after assembling all the mounting plates 33 into the battery case 32, the battery unit 31 may be inserted from the front of the case into the space partitioned by each mounting plate 33. [Explanation of Symbols]

[0103] K:Open part 20: Turning frame (aircraft frame) 30: Battery device 31: Battery unit (onboard component) 32: Battery case (storage case) 33: Mounting Plate 34: Mounting section 35: Mount support section 36: Tray 37: Reinforcement member on the open side 62: Electric motor (electric actuator) 100: Working machinery 322a: opening 331: Independent plate section (independent component) 351: Mounting support plate 362a: Through hole

Claims

1. The aircraft frame and Multiple payloads, A housing case is placed on the aircraft frame and houses the multiple payloads, The aforementioned housing case is held at intervals in the vertical direction, and a plurality of mounting plates on which the plurality of mounting objects are each individually mounted, Each of the aforementioned mounting plates is provided with a plurality of mounting portions interposed between each mounting plate and the housing case, A work machine having a plurality of mounting support parts that are fixed to the housing case so as to be located on the outside of the outer wall surface of the housing case and each support the plurality of mounting parts.

2. In the work machine described in claim 1, A working machine wherein the housing case is provided at the height in which each of the plurality of mounting plates is located and has a plurality of openings for receiving each mounting plate so as to be insertable and removable from the side of the housing case.

3. In the work machine described in claim 2, The aforementioned multiple mounting plates each consist of multiple independent members that are independent of each other, in a work machine.

4. In the work machine described in claim 2, The aforementioned housing case has an opening that can be opened horizontally to accept the plurality of loads, and is a work machine.

5. In the work machine described in claim 4, A work machine further comprising an open-side reinforcing member that is detachably attached to the aforementioned housing case and connects a pair of horizontally opposing edges of the housing case with respect to the opening.

6. In the work machine described in claim 5, The aforementioned storage case has a pair of horizontally opposing side panels and a back panel connecting the edges of the pair of side panels, and is configured to have the aforementioned opening on the front side opposite to the back panel. The plurality of mounting support parts are located outward from each other's outer surfaces of the pair of side plates that constitute the outer wall surface of the housing case, The open-side reinforcing member is configured to connect a pair of opposing edges of the pair of side plates that straddle the open portion, The plurality of mounting plates each have a plate body portion that spans the pair of side plates and divides the space inside the housing case in multiple stages in the vertical direction, and a pair of protruding plate portions that are connected to the plate body portion and located outside the pair of side plates, and the pair of protruding plate portions are configured to be supported by the mounting support portion via the mounting portion, in a work machine.

7. In the work machine according to any one of claims 1 to 6, The system further comprises a plurality of trays on which each of the plurality of items is placed, Each of the aforementioned multiple mounting items is mounted on the aforementioned multiple mounting plates via the aforementioned multiple trays, A work machine in which each of the aforementioned trays has an insertion hole through which a suspension member for suspending each tray can be inserted.

8. In the work machine according to any one of claims 1 to 6, Electric actuator and The system includes a plurality of battery units that supply power to the electric actuator, The aforementioned multiple mounted objects comprise a work machine consisting of the aforementioned multiple battery units.

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