JP2024117974A - Work Machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a work machine capable of easily improving workability of maintenance such as washer liquid replenishment.

SOLUTION: A work machine 3 comprises: a travel unit 31; a turning unit 32; a boarding cabin 4; a work machine 33; a storage device 1; and a washer device. The turning unit 32 is disposed above the travel unit 31, and can turn with respect to the travel unit 31 in a plan view. The boarding cabin 4 is positioned above the turning unit 32. The work machine 33 is supported on the turning unit 32. The storage device 1 stores a washer liquid. The washer device jets the washer liquid to an object to be washed. The storage device 1 is disposed at a tank position corresponding to the side of the boarding cabin 4 or the rear of the work machine 33 above the turning unit 32.

SELECTED DRAWING: Figure 2

COPYRIGHT: (C)2024,JPO&INPIT

Description

The present invention relates to a work machine equipped with a washer device that sprays washer fluid onto an object to be washed.

As a related art, a work machine (hydraulic excavator) is known that includes a self-propelled traveling section (lower traveling body), a rotating section (upper rotating body) that is rotatably mounted on the traveling section and forms a vehicle body together with the traveling section, and a work machine (working device) that is arranged in front of the rotating section and can be raised and lowered, for performing excavation work and the like (see, for example, Patent Document 1). The work machine according to the related art includes a passenger compartment (cab) arranged on the left side of the rotating body, and an access door for an operator to get on and off is provided on the left side of the passenger compartment. Furthermore, a windshield is provided on the front of the passenger compartment, and a washer device (nozzle) that sprays washer fluid onto the windshield is provided.

In related technology, a storage device (washer tank) for storing washer fluid is integrated with the front air conditioning duct, allowing it to be installed comfortably in the passenger compartment close to the washer device by utilizing the space around the front air conditioning duct. This prevents the storage device from obstructing visibility or protruding into the living space.

JP 2005-238999 A

In the work machines related to the above-mentioned related technologies, for example, if washer fluid is accidentally spilled into the passenger compartment when refilling a reservoir device installed in the passenger compartment, the washer fluid can cause staining of interior materials such as the driver's seat or electrical equipment. This means that workers have to be careful when performing maintenance such as refilling washer fluid, which can lead to reduced efficiency in maintenance work.

The object of the present invention is to provide a work machine that makes it easy to improve the workability of maintenance such as refilling washer fluid.

A working machine according to one aspect of the present invention includes a travel section, a swivel section, a passenger cabin, a working machine, a storage device, and a washer device. The swivel section is disposed above the travel section and is rotatable relative to the travel section in a plan view. The passenger cabin is located on the swivel section. The working machine is supported by the swivel section. The storage device stores washer fluid. The washer device sprays the washer fluid onto an object to be washed. The storage device is disposed on the swivel section at a tank position that corresponds to at least one of the side of the passenger cabin and the rear of the working machine.

The present invention provides a work machine that makes it easy to improve the workability of maintenance such as refilling washer fluid.

FIG. 1 is a schematic perspective view showing a work machine according to a first embodiment, as viewed from the left front. FIG. 2 is a schematic perspective view showing the work machine according to the first embodiment as viewed from the right rear. FIG. 3 is a schematic rear view of the work machine according to the first embodiment. FIG. 4 is a schematic right side view of the work machine according to the first embodiment. FIG. 5 is a schematic perspective view showing a main portion of the work machine according to the first embodiment, and is an enlarged view of area Z1 in FIG. 6 shows the main parts of the work machine according to the first embodiment, and is a schematic rear view in which area Z1 in FIG. 3 is enlarged, and a schematic right side view in which area Z1 in FIG. 4 is enlarged. FIG. 7 is a schematic exploded perspective view of the storage device of the work machine according to the first embodiment. FIG. 8 is a schematic perspective view showing a cabin, a storage device, and a washer device of the work machine according to the first embodiment. FIG. 9 is a schematic plan view of the work machine according to the first embodiment.

The following describes an embodiment of the present invention with reference to the attached drawings. The following embodiment is an example of the present invention and is not intended to limit the technical scope of the present invention.

(Embodiment 1)
[1] Overall configuration As shown in Figures 1 to 4, the work machine 3 according to this embodiment is equipped with a traveling section 31, a rotating section 32, and a working implement 33. The work machine 3 also has a cabin 4 in which a passenger can board. The cabin 4 includes a passenger seat 41 in which the passenger sits. In this embodiment, the traveling section 31, the rotating section 32, the working implement 33, and the cabin 4 are included in the body 30 of the work machine 3.

The work machine 3 according to this embodiment further includes a storage device 1 and a washer device 2. The storage device 1 stores washer fluid. The washer device 2 is a device that washes an object to be washed by spraying the washer fluid stored in the storage device 1 onto the object to be washed. Here, the storage device 1 and the washer device 2 are mounted on the body 30 of the work machine 3.

In this disclosure, the term "cleaning target" refers to the area to be cleaned by the washer device 2, and includes areas such as the windshield 441, left side window 442, right side window 443, or rear window 444 in the cabin 42 of the passenger compartment 4, where dirt may interfere with the operation or movement of the work machine 3. Similarly, examples of cleaning targets where dirt may interfere with the operation or movement of the work machine 3 include headlights, work lights, and various sensors (including sonar, cameras, etc.). In this embodiment, as an example, a case will be described in which the windshield 441 of the cabin 42 is the "cleaning target."

In this disclosure, "washer fluid" refers to the washing fluid used by the washer device 2 to wash the object to be washed, and an appropriate washing fluid is used depending on the usage environment of the work machine 3 or the object to be washed. By storing such washing fluid in the storage device 1 mounted on the machine body 30, the washer device 2 can use the washer fluid in the storage device 1 to wash the object to be washed, for example, even when the work machine 3 is moving (driving).

In addition, the work machine 3 is further equipped with a display device 34 (see FIG. 4), an operating device 35 (see FIG. 4), an alarm unit 36 (see FIG. 2), an indicator light 37 (see FIG. 2), a control device, and various sensors (including sonar, cameras, etc.).

In the present disclosure, the term "working machine" refers to a machine for various types of work, and examples thereof include backhoes (including hydraulic excavators, mini excavators, etc.), wheel loaders, carriers, and other work vehicles. The working machine 3 is equipped with a working implement 33 configured to be able to perform one or more tasks. The working machine 3 is not limited to a "vehicle" and may be, for example, a work vessel, a work flying object such as a drone or a multicopter, etc. Furthermore, the working machine 3 is not limited to a construction machine (construction machinery), and may be, for example, an agricultural machine (farm machinery) such as a rice transplanter, a tractor, or a combine harvester. In this embodiment, unless otherwise specified, the working machine 3 is a riding type backhoe that can perform excavation work, land leveling work, trench digging work, loading work, etc. as work. More specifically, the work machine 3 according to this embodiment is assumed to be an "ultra-tight turning type" in which the turning section 32 including the work implement 33 can turn completely within 120% of the overall width of the traveling section 31 (total width of the pair of left and right crawlers 311), or a "rear ultra-tight turning type" in which the rear end turning radius ratio is within 120%.

In addition, in this embodiment, as an example, the passenger in the cabin 4 is an operator, and the work machine 3 is operated by the operation of the passenger. However, the passenger is not limited to an operator, and for example, when the work machine 3 is operated by remote control or automatic driving, the passenger may be a person who boards the work machine 3 for the purpose of monitoring or inspection (maintenance) or the like. Furthermore, the cabin 4 may be capable of accommodating multiple passengers at the same time, in which case multiple passenger seats 41 may be provided in one cabin 4.

In this embodiment, for convenience of explanation, the vertical direction when the work machine 3 is in a usable state is defined as the up-down direction D1. Furthermore, the front-rear direction D2 and the left-right direction D3 are defined based on the direction as seen by the rider (operator) riding in the cabin 4 of the work machine 3. In other words, each direction used in this embodiment is a direction defined based on the cabin 4 of the work machine 3, and the direction in which the machine body 30 moves when the work machine 3 moves forward is "forward", and the direction in which the machine body 30 moves when the work machine 3 moves backward is "rear". Similarly, the direction in which the front end of the machine body 30 moves when the work machine 3 turns right is "rightward", and the direction in which the front end of the machine body 30 moves when the work machine 3 turns left is "leftward". Since the cabin 4 is provided on the swivel unit 32, the front-rear direction D2 and the left-right direction D3 relative to the travel unit 31 change as the swivel unit 32 rotates. In the following, the directions are defined with the front of the cabin 4 facing the direction of travel of the travel unit 31, as shown in FIG. 1. However, these directions are not intended to limit the direction of use of the work machine 3 (directions during use).

The work machine 3 is equipped with an engine that serves as a power source. In this embodiment, as an example, the engine is a diesel engine. The engine is driven by fuel (here, diesel) supplied from a fuel tank. In the work machine 3, for example, the engine drives a hydraulic pump, and the hydraulic pump supplies hydraulic oil to hydraulic actuators (including hydraulic motors 61 and hydraulic cylinders 62, etc.) of each part of the machine body 30, thereby driving the machine body 30. Such a work machine 3 is controlled, for example, by a user (operator) who is on board the cabin 4 of the machine body 30 operating the operating lever 351 (see FIG. 4) of the operating device 35.

In this embodiment, as described above, it is assumed that the work machine 3 is a riding type backhoe, and the work machine 33 is driven according to the operation of a rider (operator) riding in the riding cabin 4 to perform work such as excavation. The work machine 33 is supported by a rotating section 32 provided with the riding cabin 4. Therefore, when the rotating section 32 rotates, the work machine 33 rotates together with the riding cabin 4.

Here, the cabin 4 of the vehicle body 30 is equipped with a display device 34, an operating device 35, etc., and the occupant can operate the operating device 35 while viewing various information related to the work machine 3 displayed on the display device 34. As an example, information related to the operating state of the work machine 3, such as the cooling water temperature and hydraulic oil temperature, is displayed on the display screen of the display device 34, and the occupant can check on the display device 34 information related to the operating state of the work machine 3 that is necessary for operating the operating device 35.

The running unit 31 has a running function and is configured to be able to run (including turn) on the ground. The running unit 31 has, for example, a pair of left and right crawlers 311 and a blade 312. The running unit 31 further has a hydraulic motor 61 (hydraulic actuator) for driving the crawlers 311.

The swivel unit 32 is disposed above the travel unit 31 and can rotate relative to the travel unit 31 in a plan view. In other words, the swivel unit 32 is located above the travel unit 31 and is configured to be swivelable relative to the travel unit 31 around a rotation axis along the vertical direction. The swivel unit 32 has a hydraulic motor and the like as a hydraulic actuator for rotation. In addition to the passenger compartment 4, an engine and a hydraulic pump are mounted on the swivel unit 32. Furthermore, the swivel unit 32 is provided with a boom bracket as a fulcrum unit 321 (see FIG. 1) to which the work machine 33 is attached. In a plan view, the swivel unit 32 has a substantially circular shape with a flat cutout at the front end. The swivel unit 32 can rotate around the center of the circular shape as the rotation axis.

The working machine 33 is supported by the rotating part 32 and is configured to be able to perform one or more tasks. The working machine 33 is supported by the fulcrum part 321 (boom bracket) of the rotating part 32 and performs tasks. The working machine 33 has a bucket 331. The bucket 331 is a type of attachment (working tool) attached to the body 30 of the working machine 3, and is made of any tool selected from multiple types of attachments depending on the content of the work. As an example, the bucket 331 is removably attached to the body 30 and is replaced depending on the content of the work. In addition to the bucket 331, (end) attachments for the working machine 3 include various tools such as a breaker, an auger, a crusher, a fork, a fork claw, a steel frame cutter, an asphalt cutter, a grass cutter, a ripper, a mulcher, a tilt rotator, and a tamper.

The work machine 33 further includes a boom 332, an arm 333, and a hydraulic actuator (including a hydraulic cylinder 62 and a hydraulic motor). The bucket 331 is attached to the tip of the arm 333. The bucket 331 is supported by the arm 333 so as to be rotatable about a rotation axis aligned in the horizontal direction.

The boom 332 is rotatably supported by the fulcrum 321 of the rotating section 32. Specifically, the boom 332 is supported by the fulcrum 321 so as to be rotatable about a rotation axis along the horizontal direction. The boom 332 has a shape that extends upward from a base end supported by the fulcrum 321. The arm 333 is connected to the tip of the boom 332. The arm 333 is supported by the boom 332 so as to be rotatable about a rotation axis along the horizontal direction.

The work machine 33 operates by receiving power from an engine as a power source. Specifically, the engine drives a hydraulic pump, and hydraulic oil is supplied from the hydraulic pump to the hydraulic actuators (hydraulic cylinder 62, etc.) of the work machine 33, causing each part of the work machine 33 (bucket 331, boom 332, and arm 333) to operate.

In particular, in this embodiment, the work machine 33 has a multi-joint structure in which the boom 332 and the arm 333 are configured to be rotatable independently. In other words, the boom 332 and the arm 333 each rotate about a horizontal axis of rotation, and the multi-joint work machine 33 including the boom 332 and the arm 333 can be extended or folded as a whole. Furthermore, the bucket 331 as an attachment is supported by the machine body 30 (swivel unit 32) via the boom 332 and the arm 333, and the bucket 331 itself rotates relative to the arm 333, allowing the bucket 331 to open and close.

Similarly to the work machine 33, the traveling unit 31 and the swivel unit 32 each receive power from an engine as a power source and operate. In other words, the swivel unit 32 and the traveling unit 31 operate when hydraulic oil is supplied from a hydraulic pump to the hydraulic motor 61 of the traveling unit 31 and the hydraulic motor of the swivel unit 32, etc.

The work machine 3 also includes a drive device (mechanism) such as a PTO (power take-off) for supplying power to the bucket 331 (attachment). Specifically, the drive device sends hydraulic oil from a hydraulic pump driven by the engine to the bucket 331, and adjusts the amount of power supplied to the bucket 331 by adjusting the flow rate of the hydraulic oil.

The cabin 4 is a space for passengers to board, and in this embodiment is located above the swivel unit 32. Therefore, when the swivel unit 32 rotates in a plan view, the cabin 4 also rotates. Specifically, if the swivel unit 32 is divided in half in the left-right direction D3, the cabin 4 is located on the left side. The cabin 4 has at least a passenger seat 41 where the passenger sits.

Types of the cabin 4 of a work machine 3 such as a construction machine include a cabin type, a canopy type, and a floor type. A cabin type cabin 4 includes a cabin 42, and a passenger boards in the cabin space inside the cabin 42. A canopy type cabin 4 includes a canopy (roof), and a passenger boards in the space below the canopy. A floor type cabin 4 does not include a cabin 42 or a canopy, and a passenger boards in a space that is open upward. In other words, the cabin 4 may not only be surrounded by panels, but may also include various other types of spaces that are prepared for passengers to board. In this embodiment, a cabin type cabin 4 will be described as an example.

In this embodiment, the cabin 4 is located on the left side of the body 30 of the work machine 3. Furthermore, the cabin 4 is located above the left crawler 311 (see FIG. 1). With this arrangement, passengers board and disembark from the cabin 4 from the left side of the cabin 4. Therefore, in this embodiment, the door 43 of the cabin 4 is located on the left side of the cabin 4 in the left-right direction D3. In other words, passengers board and disembark from the cabin 4 through the door 43 located on the left side of the cabin 4.

The cabin-type passenger compartment 4 includes a cabin 42 that is shaped to cover the passenger seat 41. The cabin 42 includes a cabin frame 425 and a cabin roof 426. In other words, the cabin 42 forms the outer shell of the passenger compartment 4, and the passenger sits inside the cabin 42.

The cabin frame 425 is a structural body that serves as the skeleton of the cabin 42 and is formed to surround the cabin space. The cabin roof 426 is disposed above the cabin frame 425 and is supported by the cabin frame 425. The cabin roof 426 is approximately rectangular in plan view and is formed large enough to cover the entire passenger compartment 4.

The cabin 42 has a front panel 421, a left side panel 422, a right side panel 423, and a rear panel 424. The front panel 421 forms the front surface of the cabin 42, the left side panel 422 forms the left side surface of the cabin 42, the right side panel 423 forms the right side surface of the cabin 42, and the rear panel 424 forms the rear surface of the cabin 42.

The front panel 421 is provided with a windshield 441 (to be cleaned). Similarly, the left side panel 422 and the right side panel 423 are provided with a left side glass 442 and a right side glass 443, respectively, and the rear panel 424 is provided with a rear glass 444. In figures other than Figures 1 and 2, illustration of glass members such as the windshield 441 is omitted as appropriate. The front panel 421, the left side panel 422, the right side panel 423, and the rear panel 424 are appropriately attached to both sides of the cabin frame 425 in the fore-and-aft direction D2 and both sides in the left-and-right direction D3, and together with the door 43, surround the cabin space from all sides.

The door 43 is provided in an opening provided on the left side of the cabin 42, and can rotate between a "closed position" that covers the opening and an "open position" that opens the opening to allow passengers to pass through. There are two types of such doors 43: a "front-opening type" that opens at the front in the front-to-rear direction D2, and a "rear-opening type" that opens at the rear. In this embodiment, the door 43 is a front-opening type as an example. Furthermore, in this embodiment, the door 43 opens outward, and the door 43 opens by pulling the front end, which is the free end of the door 43, toward the front (outside the boarding cabin 4) when viewed from the front of the door 43 outside the boarding cabin 4 (the left side in this embodiment).

With the above-mentioned configuration, when boarding the cabin 4, the passenger enters the cabin space inside the cabin 42 with the door 43 open (in the open position), and closes the door 43 (in the closed position), completing boarding into the cabin 4. On the other hand, when dismounting from the cabin 4, the passenger can dismount from the cabin 4 by leaving the cabin 42 with the door 43 open (in the open position), and closing the door 43 (in the closed position). In particular, in a cabin-type cabin 4 equipped with a cabin 42 as in this embodiment, at least the cabin frame 425 functions as the framework of the cabin 42 and has sufficient strength (rigidity) to support the cabin roof 426, the door 43, etc. In addition, the cabin 42 may be removable from the machine body 30 (the rotating part 32) of the work machine 3.

The display device 34 is disposed in the cabin 4 and is a user interface for outputting various information to the passenger (operator). The display device 34 is controlled by the control device and presents (outputs) various information by displaying various screens. In addition to display, the display device 34 has a function of outputting sound (including voice), and may present various information by sound. Furthermore, in this embodiment, the display device 34 includes an input means such as a touch panel, and accepts various operations by the user by outputting electrical signals in response to the passenger's operation. This allows the passenger to view the display screen displayed on the display device 34, and also allows the passenger to operate the display device 34 as necessary.

The operation device 35 is disposed in the cabin 4 and is a user interface for receiving operation input from the passenger (operator). In the present embodiment, as an example, the operation device 35 includes an operation lever 351, etc.

The display device 34 is disposed in the passenger cabin 4, in front of the passenger seat 41 in the front-rear direction D2 and to the right of the passenger seat 41 in the left-right direction D3. This allows a passenger seated in the passenger seat 41 to check the display on the display device 34 without significantly changing their posture. The operating levers 351 of the operating device 35 are located on both sides of the front end of the passenger seat 41 in the left-right direction D3. This allows a passenger seated in the passenger seat 41 to operate the operating device 35 without significantly changing their posture.

In addition, various sensors and exterior accessories such as mirrors can be attached to the cabin 42.

As shown in FIG. 1, the washer device 2 is attached to the cabin 42. In this embodiment, as an example, the washer device 2 is arranged around (here, above) the windshield 441 to be washed, and sprays washer fluid toward the windshield 441. The washer device 2 has a nozzle as an injection port from which the washer fluid is sprayed, and sprays the washer fluid supplied from the storage device 1 through the washer flow path 21 (see FIG. 8) onto the windshield 441. This makes it possible to wash the windshield 441 to be washed with the washer fluid. In particular, in this embodiment, the work machine 3 is equipped with a wiper 38 provided in the cabin 42, and by operating the wiper 38 in conjunction with the washer device 2, it is possible to efficiently wash the windshield 441 with the washer fluid.

The position of the washer device 2 (or its nozzle) is not limited to above the windshield 441, but may be, for example, to the side or below the windshield 441. Also, for example, if the cabin roof 426 has a shape that protrudes forward from the front panel 421, the washer device 2 may be disposed on the cabin roof 426. Furthermore, for example, the washer device 2 may be integrated with the wiper 38, in which case the washer fluid can be sprayed from a nozzle provided on the wiper 38.

The arrangement of the washer device 2 (the nozzles) varies depending on the object to be washed. For example, when the rear window 444 is the object to be washed, the washer device 2 is arranged in a position where the washer fluid can be sprayed toward the rear window 444. The washer device 2 may have multiple nozzles.

The alarm unit 36 has a function of outputting an alarm sound. The alarm unit 36 is disposed outside the cabin 42, and issues an alarm mainly to people around the work machine 3. In this embodiment, the alarm unit 36 further has a communication antenna for wireless communication, and an antenna for determining the position of the work machine 3, such as a GPS (Global Positioning System).

The indicator light 37 lights up (emits light) depending on the operating state of the work machine 3. The indicator light 37 is arranged outside the cabin 42, and mainly displays information to people around the work machine 3. In this embodiment, the indicator light 37 is configured to be able to emit light in multiple colors (e.g., three colors), and emits light in different colors depending on the operating state of the work machine 3.

As described above, the storage device 1 is a device that stores washer fluid. The storage device 1 is connected to the washer device 2 via the washer flow path 21. The washer fluid stored in the storage device 1 is supplied to the washer device 2 through the washer flow path 21 by a pump, and is sprayed from the washer device 2 onto the object to be washed (the windshield 441 in this embodiment).

The storage device 1 is configured to be able to replenish (refill) the washer fluid. In other words, the storage device 1 has a lid 12 (see FIG. 7) on a tank body 11 (see FIG. 7) that stores the washer fluid, and when the lid 12 is open, the washer fluid can be replenished into the tank body 11.

In this embodiment, the storage device 1 is disposed outside the cabin 42. Therefore, even if the washer fluid is accidentally spilled when refilling the storage device 1 with washer fluid, it is possible to prevent the washer fluid from staining interior materials, electrical equipment, etc., of the passenger seat in the passenger compartment 4. Therefore, the work machine 3 according to this embodiment has the advantage that the operator does not have to worry too much about maintenance such as refilling the washer fluid, making it easier to improve the workability of maintenance.

The storage device 1, alarm unit 36, and indicator light 37 are all disposed on the swivel section 32. In particular, as shown in Figures 2 to 4, the storage device 1, alarm unit 36, and indicator light 37 are disposed on the swivel section 32 at a position to the right of the passenger compartment 4 and behind the work machine 33. The arrangement of the storage device 1, alarm unit 36, and indicator light 37 is explained in detail in the section "[2] Arrangement of storage devices, etc.".

The control device mainly comprises a computer system having one or more processors, such as a CPU (Central Processing Unit), and one or more memories, such as a ROM (Read Only Memory) and a RAM (Random Access Memory), and executes various processes (information processing). In this embodiment, the control device is an integrated controller that controls the entire work machine 3, and is composed of, for example, an electronic control unit (ECU). However, the control device may be provided separately from the integrated controller, or may be mainly composed of one processor or multiple processors.

In addition to the above-mentioned configuration, the work machine 3 is further equipped with a cut-off lever (gate lock lever), a communication device, a fuel tank, a hydraulic oil tank, a cooling water tank, a battery, etc. The cut-off lever can be operated between a "raised position" and a "lowered position", and when the cut-off lever is in the "raised position", the operation of the work machine 3 is forcibly restricted without the operation of the operating device 35.

[2] Arrangement of the storage device, etc. Next, the arrangement of the storage device 1, etc. (including the alarm unit 36 and the indicator lamp 37) in the work machine 3 according to this embodiment will be described in detail with reference to Figures 5 to 9. The following description will mainly focus on the area of the work machine 3 surrounding the storage device 1, that is, the rear section of the rotating part 32.

For example, FIG. 5 is a perspective view of the rear section of the swivel unit 32 seen from diagonally above, and is an enlarged view of area Z1 in FIG. 2. FIG. 6 is a schematic diagram showing a rear view (enlarged view of area Z1 in FIG. 3) and a right side view (enlarged view of area Z1 in FIG. 4) of the rear section of the swivel unit 32. FIG. 7 is an exploded perspective view of the storage device 1, with the warning unit 36 and indicator lamp 37, etc., omitted. FIG. 8 is a schematic diagram showing the washer flow path 21 between the storage device 1 and the washer device 2, with the illustration of parts other than the passenger compartment 4, the storage device 1, the washer device 2, and the washer flow path 21 appropriately omitted. In the schematic plan view of FIG. 9, the illustration of the work machine 33 is omitted.

5 and 6, the storage device 1 is disposed on the swivel section 32 at a tank position Ps1 (see FIG. 6) that corresponds to at least one of the side of the cabin 4 and the rear of the work machine 33. That is, the tank position Ps1 at which the storage device 1 is disposed is either on the side of the cabin 4, rear of the work machine 33, or on the side of the cabin 4 and rear of the work machine 33, above the swivel section 32. In this embodiment, as an example, the tank position Ps1 is on the side of the cabin 4 and rear of the work machine 33, above the swivel section 32. That is, the storage device 1 is disposed on the swivel section 32 at a tank position Ps1 that corresponds to both the side of the cabin 4 and the rear of the work machine 33.

According to the above configuration, the storage device 1 is disposed outside the passenger compartment 4. Therefore, as described above, even if the washer fluid is accidentally spilled when refilling the storage device 1 with washer fluid, it is possible to prevent the washer fluid from staining the interior materials or electrical equipment of the passenger seat and other interior parts in the passenger compartment 4. This has the advantage that workers do not have to worry too much about maintenance such as refilling the washer fluid, making it easier to improve the efficiency of maintenance work.

Moreover, the tank position Ps1, which corresponds to at least one of the sides of the cabin 4 and the rear of the work machine 33, is a so-called dead space, which is unlikely to be in the field of view of the operator in the cabin 4, and is unlikely to interfere with the work performed by the work machine 33 or the rotational movement of the swivel unit 32. In other words, by utilizing this dead space, the storage device 1 is positioned outside the cabin 4, so that the limited space above the swivel unit 32 can be effectively utilized. In other words, it is possible to position the storage device 1 above the swivel unit 32 while making the aircraft body 30 as compact as possible.

As described above, in this embodiment, the working machine 33 is supported by the fulcrum 321 located in front of the storage device 1 so as to be rotatable in the front-rear direction D2. The tank position Ps1 is below the working machine 33 when the working machine 33 is located at the rear end of its movable range (the state shown in FIG. 6, etc.). In other words, a tall member cannot be placed below the working machine 33 when the working machine 33 is at the rear end of its movable range, because the working machine 33 may be located above it. In this embodiment, the storage device 1 is designed to have a height dimension that fits below the working machine 33 when the working machine 33 is at the rear end of its movable range, making it possible to effectively use such dead space to install the storage device 1.

More specifically, the boom 332 of the working machine 33 supported by the fulcrum 321 has an approximately V-shape in side view, bent so as to be convex at the bent portion in the middle of the longitudinal direction. Therefore, by folding the working machine 33 and positioning the boom 332 at the rear end of its movable range, in a state in which the amount of the working machine 33 protruding from the swivel unit 32 in a plan view is minimized (see FIG. 4), the lower part of the boom 332 rises up from the fulcrum 321 at an angle obliquely backward with respect to the vertical direction. Therefore, as shown in FIG. 6, a roughly triangular dead space (tank position Ps1) is generated between the upper surface of the swivel unit 32 and the boom 332 in a (right) side view. The storage device 1 is arranged to fit within this dead space (tank position Ps1).

In addition, in this embodiment, the alarm unit 36 and the indicator light 37 are disposed near the storage device 1. Specifically, the alarm unit 36 is disposed adjacent to the storage device 1 to the right of the storage device 1 at the tank position Ps1. The indicator light 37 is disposed adjacent to the alarm unit 36, further to the right of the alarm unit 36 and in front of the alarm unit 36. In other words, in rear view, the storage device 1, alarm unit 36, and indicator light 37 are disposed on the rotating section 32 in this order from the passenger cabin 4 side (left side).

Here, an openable and closable bonnet 322 is provided at the right end of the upper surface of the rotating section 32. When the bonnet 322 is open, maintenance (such as refueling) of the fuel tank, hydraulic oil tank, and cooling water tank is possible through an inspection hatch closed by the bonnet 322. In this embodiment, the bonnet 322 opens and closes by rotating around its rear end as a fulcrum.

The storage device 1, the alarm unit 36, and the indicator light 37 are arranged to the left of the bonnet 322 so as not to interfere with the bonnet 322. In other words, the storage device 1, the alarm unit 36, and the indicator light 37 are arranged in a position between the passenger compartment 4 and the bonnet 322 in the left-right direction D3. This ensures that the bonnet 322 will not come into contact with the indicator light 37 even when the bonnet 322 is rotated around its rear end as a fulcrum and opened.

As shown in FIG. 7, the storage device 1 has a tank body 11 and an outer case 13. The tank body 11 stores the washer fluid. The outer case 13 houses the tank body 11. By providing the outer case 13 that covers (houses) the tank body 11 in this way, the tank body 11 can be protected from, for example, ultraviolet rays, wind, rain, etc., and the weather resistance of the tank body 11 can be improved even while the storage device 1 is located outside the passenger compartment 4.

As described above, the tank body 11 has the lid 12, and the opening formed on the top surface of the tank body 11 is closed with the lid 12 to store the washer fluid in the tank body 11. The outer case 13 forms the outer shell of the storage device 1 and protects the tank body 11. The outer case 13 has an upper cover 14, and the opening formed on the top surface of the outer case 13 at a position corresponding to the lid 12 is closed with the upper cover 14, thereby covering the entire tank body 11 including the lid 12. Here, when refilling the washer fluid into the tank body 11, the upper cover 14 and the lid 12 are opened and the washer fluid is refilled through the opening of the tank body 11.

In this embodiment, as an example, the tank body 11 (including the lid 12) is made of resin and is a hollow part with a roughly rectangular parallelepiped shape. In this embodiment, as an example, the outer case 13 is made of metal and is a box-shaped part that is slightly larger than the tank body 11. The left side and bottom of the outer case 13 are open, and as shown in FIG. 7, it is attached to the tank body 11 by covering it from the right side of the tank body 11.

In this embodiment, the tank body 11 and the outer case 13 are each fixed to the cabin 42. Specifically, the tank body 11 is removably attached to the bracket 15 fixed to the right side panel 423. Here, the tank body 11 is attached to the bracket 15 by being hooked from above, and when the tank body 11 is attached to the bracket 15, the lower surface of the tank body 11 remains separated (floating) from the upper surface of the rotating part 32. The bracket 15 is fixed to the right side panel 423, for example, using fasteners such as bolts and nuts, or by welding or the like. In addition, the outer case 13 is removably attached to the right side panel 423 and the cabin frame 425 using fasteners such as bolts and nuts.

The outer case 13 of the storage device 1 also serves to protect the support portion 323 that supports the cabin 42 on the rotating portion 32 in a vibration-proof manner. In other words, the cabin 42 that constitutes the passenger compartment 4 is supported on the rotating portion 32 in a vibration-proof manner by the support portion 323. The outer case 13 covers the support portion 323 that supports the passenger compartment 4 on the rotating portion 32 in a vibration-proof manner from above.

In other words, the outer case 13 covers the support part 323 together with the tank body 11. Such support part 323 has an elastic material such as synthetic rubber, and may deteriorate when exposed to ultraviolet rays, wind, rain, etc. However, by covering the support part 323 with the outer case 13, it is possible to protect the support part 323 from ultraviolet rays, wind, rain, etc., and it is possible to improve the weather resistance of the support part 323.

The storage device 1 is also arranged to face the side wall of the passenger compartment 4. In this embodiment, as an example, the right side panel 423 constituting the right side of the cabin 42 faces the storage device 1 as a side wall. In other words, the storage device 1 is arranged in a position directly facing the passenger compartment 4 without any other members being interposed between the storage device 1 and the passenger compartment 4. This makes it easier to draw the washer flow path 21 from the storage device 1 into the passenger compartment 4.

The washer flow path 21 for sending the washer fluid from the storage device 1 to the washer device 2 is routed from the storage device 1 to the inside of the passenger compartment 4 as shown in FIG. 8. Here, the washer flow path 21 is made of a flexible hose. One end of the washer flow path 21 is connected to the cover 12 of the storage device 1. The washer flow path 21 is drawn from outside the passenger compartment 4 to inside the passenger compartment 4 through a through hole provided in the right side panel 423. Inside the passenger compartment 4, the washer flow path 21 is routed along the cabin frame 425, and the other end of the washer flow path 21 is connected to the washer device 2 arranged above the windshield 441. By routing the washer flow path 21 inside the passenger compartment 4 in this way, deterioration of the washer flow path 21 is easily suppressed.

In addition, in this embodiment, the storage device 1 has a cutout portion 131 that avoids interference with the work machine 33. Specifically, the storage device 1 has a planar cutout portion 131 that faces diagonally upward and forward at a corner between the front and top surfaces of the outer case 13 that forms the outer shell of the storage device 1. The formation of the cutout portion 131 allows the storage device 1 (outer case 13) to increase the clearance between the boom 332 of the work machine 33. This makes it easier to avoid interference between the storage device 1 and the work machine 33.

As shown in FIG. 9, the storage device 1 is arranged in a position that fits within the width W1 of the running part 31 in a plan view, regardless of the rotation position of the rotating part 32. Here, as shown in FIG. 9, if a virtual circle Vc1 is assumed to be centered on the rotation axis of the rotating part 32 and has a diameter smaller than the overall width W1 of the running part 31 (the overall width of the pair of left and right crawlers 311), the storage device 1 fits within this virtual circle Vc1 in a plan view. In other words, even if the rotating part 32 rotates, the storage device 1 does not protrude from the virtual circle Vc1, and as a result, the storage device 1 always fits within the width W1 of the running part 31. As a result, the storage device 1 is less likely to interfere with the rotation of the rotating part 32, and the storage device 1 can be arranged in a position relatively close to the rotation axis of the rotating part 32, making it easier to route the washer flow path 21.

[3] Modifications Below, we will list modifications of the first embodiment. The modifications described below can be applied in appropriate combinations.

The boarding cabin 4 is not limited to a cabin type, and may be, for example, a canopy type or a floor type. A canopy type or floor type boarding cabin 4 does not have a door 43, but has an entrance for passengers to get on and off the boarding cabin 4. For example, in the case of a floor type boarding cabin 4, there is no structure on the upper side of the entrance, so the entrance is open upward.

Furthermore, the boarding/alighting entrance such as the door 43 is not limited to being located to the left (left side) of the boarding cabin 4 as in the first embodiment. In other words, the boarding/alighting entrance for passengers to board and alight need only be located on at least one side in the left-right direction D3 of the boarding cabin 4, and may be located, for example, on the right (right side) of the boarding cabin 4 or on both sides in the left-right direction D3. When the boarding/alighting entrance is located to the right (right side) of the boarding cabin 4, it is preferable that the storage device 1 is located on the left side as viewed from the passenger seat 41.

Furthermore, the storage device 1 only needs to be disposed at a tank position Ps1 on the swivel section 32 that corresponds to at least one of the side of the passenger cabin 4 and the rear of the work machine 33. Therefore, the storage device 1 is not limited to the tank position Ps1 that corresponds to both the side of the passenger cabin 4 and the rear of the work machine 33, and may be disposed at a tank position Ps1 that is, for example, the side of the passenger cabin 4 or the rear of the work machine 33.

Furthermore, it is not essential that the work machine 3 be of the "ultra-tight turning type" or "rear ultra-tight turning type."

In addition, it is not essential that the alarm unit 36 and the indicator light 37 are disposed near the storage device 1. Furthermore, at least one of the alarm unit 36 and the indicator light 37 may be omitted.

Furthermore, the power source of the work machine 3 is not limited to a diesel engine, and may be, for example, an engine other than a diesel engine, a motor (electric motor), or a hybrid power source including an engine and a motor (electric motor).

The display device 34 and the operation device 35 are not limited to being mounted on the aircraft 30, and may be provided separately from the aircraft 30. In this case, the display device 34 and the operation device 35 are configured to be able to communicate with the aircraft 30, thereby enabling remote operation of the aircraft 30.

Furthermore, it is not essential that the tank position Ps1 is below the working machine 33 when the working machine 33 is located at the rear end of its movable range. It is not essential that the storage device 1 has a cutout shape portion 131 that avoids interference with the working machine 33. It is not essential that the storage device 1 is disposed so as to face the side wall of the passenger compartment 4. Furthermore, it is not essential that the washer flow path 21 is routed from the storage device 1 into the passenger compartment 4.

In addition, it is not essential that the storage device 1 has a tank body 11 that stores the washer fluid and an outer case 13 that houses the tank body 11, and the outer case 13 can be omitted as appropriate. Furthermore, it is not essential that the outer case 13 covers the support part 323 from above. In addition, it is not essential that the storage device 1 is disposed in a position that fits within the width W1 of the running part 31 in a plan view, regardless of the rotation position of the rotating part 32.

[Appendix to the invention]
The following will provide an overview of the invention extracted from the above-described embodiment. Note that the configurations and processing functions described in the following supplementary notes can be selected and combined as desired.

<Appendix 1>
A running part;
A rotating unit that is disposed above the running unit and is rotatable relative to the running unit in a plan view;
A passenger cabin located on the rotating section;
A work machine supported by the rotating section;
A storage device for storing washer fluid;
a washer device that sprays the washer fluid onto an object to be washed,
The storage device is disposed on the rotating portion at a tank position corresponding to at least one of a side of the passenger cabin and a rear of the work machine.
Working machinery.

<Appendix 2>
The working machine is supported rotatably in a front-rear direction at a fulcrum located in front of the storage device,
The tank position is below the working machine when the working machine is located at the rear end of its movable range.
2. The work machine of claim 1.

<Appendix 3>
The storage device has a cutout shape portion that avoids interference with the work machine.
3. The work machine according to claim 1 or 2.

<Appendix 4>
The storage device is disposed so as to face a side wall of the passenger compartment.
4. A work machine as described in any one of appendix 1 to 3.

<Appendix 5>
A washer flow path for sending the washer fluid from the reservoir device to the washer device is routed from the reservoir device to the passenger compartment.
5. The work machine of claim 4.

<Appendix 6>
The storage device includes a tank body that stores the washer fluid, and an outer case that houses the tank body.
6. A work machine as described in any one of appendix 1 to 5.

<Appendix 7>
The outer case covers from above a support portion that supports the passenger cabin on the rotating portion in a vibration-proof manner.
7. The work machine of claim 6.

<Appendix 8>
The storage device is disposed at a position that fits within the width of the traveling section in a plan view regardless of the rotation position of the rotating section.
8. A work machine as described in any one of appendix 1 to 7.

REFERENCE SIGNS LIST 1 Storage device 2 Washer device 3 Working machine 4 Cab 11 Tank body 13 Outer case 21 Washer flow path 31 Traveling section 32 Swinging section 33 Working machine 321 Fulcrum section 323 Support section 131 Cutout section 423 Right side panel (side wall)
D2 Front-rear direction Ps1 Tank position W1 Width (of running part)

Claims (8)

A running part;
A rotating unit that is disposed above the running unit and is rotatable relative to the running unit in a plan view;
A passenger cabin located on the rotating section;
A work machine supported by the rotating section;
A storage device for storing washer fluid;
a washer device that sprays the washer fluid onto an object to be washed,
The storage device is disposed on the rotating portion at a tank position corresponding to at least one of a side of the passenger cabin and a rear of the work machine.
Working machinery. The working machine is supported rotatably in a front-rear direction at a fulcrum located in front of the storage device,
The tank position is below the working machine when the working machine is located at the rear end of its movable range.
2. The work machine of claim 1. The storage device has a cutout shape portion that avoids interference with the work machine.
A work machine according to claim 1 or 2. The storage device is disposed so as to face a side wall of the passenger compartment.
A work machine according to claim 1 or 2. A washer flow path for sending the washer fluid from the reservoir device to the washer device is routed from the reservoir device to the passenger compartment.
5. A work machine according to claim 4. The storage device includes a tank body that stores the washer fluid, and an outer case that houses the tank body.
A work machine according to claim 1 or 2. The outer case covers from above a support portion that supports the passenger cabin on the rotating portion in a vibration-proof manner.
7. A work machine according to claim 6. The storage device is disposed at a position that fits within the width of the traveling section in a plan view regardless of the rotation position of the rotating section.
A work machine according to claim 1 or 2.

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