EP3683363A1 - Work vehicle - Google Patents
Work vehicle Download PDFInfo
- Publication number
- EP3683363A1 EP3683363A1 EP18855760.7A EP18855760A EP3683363A1 EP 3683363 A1 EP3683363 A1 EP 3683363A1 EP 18855760 A EP18855760 A EP 18855760A EP 3683363 A1 EP3683363 A1 EP 3683363A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- engine hood
- posture
- engine
- hydraulic hose
- shaft
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 230000036544 posture Effects 0.000 description 30
- 238000012423 maintenance Methods 0.000 description 15
- 230000005484 gravity Effects 0.000 description 4
- 238000010276 construction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 238000009412 basement excavation Methods 0.000 description 1
- 230000014509 gene expression Effects 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/08—Superstructures; Supports for superstructures
- E02F9/0833—Improving access, e.g. for maintenance, steps for improving driver's access, handrails
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/08—Superstructures; Supports for superstructures
- E02F9/0858—Arrangement of component parts installed on superstructures not otherwise provided for, e.g. electric components, fenders, air-conditioning units
- E02F9/0866—Engine compartment, e.g. heat exchangers, exhaust filters, cooling devices, silencers, mufflers, position of hydraulic pumps in the engine compartment
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/08—Superstructures; Supports for superstructures
- E02F9/0858—Arrangement of component parts installed on superstructures not otherwise provided for, e.g. electric components, fenders, air-conditioning units
- E02F9/0891—Lids or bonnets or doors or details thereof
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/20—Drives; Control devices
- E02F9/2004—Control mechanisms, e.g. control levers
- E02F9/2012—Setting the functions of the control levers, e.g. changing assigned functions among operations levers, setting functions dependent on the operator or seat orientation
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F3/00—Dredgers; Soil-shifting machines
- E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
- E02F3/28—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets
- E02F3/36—Component parts
- E02F3/38—Cantilever beams, i.e. booms;, e.g. manufacturing processes, forms, geometry or materials used for booms; Dipper-arms, e.g. manufacturing processes, forms, geometry or materials used for dipper-arms; Bucket-arms
- E02F3/382—Connections to the frame; Supports for booms or arms
- E02F3/384—Connections to the frame; Supports for booms or arms the boom being pivotable relative to the frame about a vertical axis
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/20—Drives; Control devices
- E02F9/22—Hydraulic or pneumatic drives
- E02F9/2264—Arrangements or adaptations of elements for hydraulic drives
- E02F9/2275—Hoses and supports therefor and protection therefor
Definitions
- the present invention relates to a work vehicle including a console box.
- Patent Literatures 1 and 2 disclose this type of work vehicle.
- PTL 1 discloses a construction machine including an engine hood configured to open and close both of an opening on the upper side and an opening on the rear side of an engine room.
- the engine hood turns about a hinge attached to the front end of the engine hood.
- the engine hood includes an upper side portion having an upper surface on which a console box is disposed in such a manner that the console box is turnable together with the engine hood.
- PTL 2 discloses a small construction machine including box covers turnable about an axis being at the upper edge of the front side of a main body cover.
- the box covers support their corresponding control boxes.
- Each of the box covers has a back surface to which a first end of a supporting column is attached via a bearing.
- a second end of the supporting column is fastened at a fastening hole in the main body cover.
- the engine hood may potentially be closed unintentionally as a result of the turning of the console box.
- the opening for inspection and maintenance secured by lifting up the box covers with the supporting columns is partial and limited.
- devices requiring maintenance need to be arranged to be exposed in the opening.
- PTL 2 involves the limitation on the layout of the devices, disadvantageously.
- the present invention was made in view of the above circumstances, and has an object to provide a work vehicle with ease of maintenance.
- a work vehicle including the following features. That is, the work vehicle includes a revolving frame, an engine hood, a console box, and a hydraulic hose.
- an engine is disposed in the revolving frame.
- the engine hood is supported by a first shaft disposed in the rear of the engine such that the engine hood is turnable about the first shaft, and the engine hood is configured to turn relative to the revolving frame to be opened or closed.
- the console box is supported by a second shaft disposed above the engine hood, is turnable about the second shaft, and is configured to turn relative to the engine hood to be changed between a first posture and a second posture.
- the hydraulic hose is connected to the console box.
- the console box includes a work manipulation lever whose manipulation is enabled while the console box is in the first posture and whose manipulation is disabled while the console box is in the second posture.
- a direction in which the engine hood is caused to turn to be opened coincides with a direction in which the console box is caused to turn to be changed from the first posture to the second posture.
- the hydraulic hose is arranged to extend along an inner wall of the revolving frame and an inner wall of the engine hood and to be partially close to the first shaft and the second shaft.
- the work vehicle described above preferably includes the following features. That is, the hydraulic hose is fixed to the revolving frame or the engine hood with fixing members arranged at intervals along a longitudinal direction of the hydraulic hose. In a state where the engine hood is closed, a portion of the hydraulic hose which portion is located close to the first shaft and which is interposed between adjacent ones of the fixing members has slack.
- the hydraulic hose has a portion curved downward such that a side of the portion farther from the console box than is the first shaft faces downward, and the portion thus curved is partially close to the engine.
- the work vehicle described above preferably includes the following features. That is, the engine includes an output pulley, a fan pulley, and a belt.
- the output pulley is configured to receive rotation transmitted from an output shaft.
- the fan pulley is configured to drive a blower fan.
- the belt is wound around the output pulley and the fan pulley.
- the hydraulic hose has a portion that is close to the belt while extending in parallel with the belt.
- FIG. 1 is a side view illustrating an overall structure of a revolving work vehicle 1 according to one embodiment of the present invention.
- FIG. 2 is a perspective view showing hydraulic hoses 5L and 5R that are disposed inside an engine hood 38 and that are connected to work manipulation levers 37 in console boxes 52.
- FIG. 3 is a perspective view showing the hydraulic hoses 5L and 5R viewed from a side different from that of FIG. 2 .
- FIG. 4 is a perspective view showing a state where the engine hood 38 is opened and the console boxes 52 are in a second posture.
- front, rear, left, and right in the following description respectively mean the front, rear, left, and right for an operator sitting on a driver's seat 39 in a state where both of a lower traveling body 11 and an upper revolving body 12 (each will be described later) face the front.
- the revolving work vehicle (work vehicle) 1 of the present embodiment illustrated in FIG. 1 includes the lower traveling body 11 and the upper revolving body 12.
- the lower traveling body 11 includes left and right paired crawler traveling devices 21 and hydraulic motors (not illustrated) configured to drive the crawler traveling devices 21.
- hydraulic motors not illustrated
- the upper revolving body 12 includes a revolving frame 31, an engine 33, a hydraulic pump unit 34, the engine hood 38, a steering unit 35, and a work device 13.
- the revolving frame 31 is disposed above the lower traveling body 11.
- the revolving frame 31 is supported by the lower traveling body 11 such that the revolving frame 31 is turnable about a vertical axis.
- a revolving motor (not illustrated), the revolving frame 31 can be driven to turn relative to the lower traveling body 11.
- the engine 33 is a diesel engine, for example.
- the engine 33 is disposed in a rear portion of the revolving frame 31.
- the hydraulic pump unit 34 is driven by the engine 33 to generate hydraulic force that the revolving work vehicle 1 requires to travel and to perform work.
- the engine hood 38 covers and protects an upper surface and the like of the engine 33. As illustrated in FIG. 2 , the engine hood 38 has a rear portion coupled to the revolving frame 31 via a hinge portion 45, which is attached to a rear portion of the revolving frame 31.
- the hinge portion 45 includes a base member 46 and left and right paired brackets 47.
- the base member is fixed to the rear portion of the revolving frame 31 with a fixing member (not illustrated).
- Each of the brackets 47 is thin and elongated in a top-bottom direction, and is fixed to an inner wall of the rear portion of the engine hood 38.
- This configuration makes the engine hood 38 turnable about a rotation shaft (first shaft) 71, which is disposed in the rear of the engine 33 and extends in a left-right horizontal direction, relative to the revolving frame 31. Specifically, by causing the engine hood 38 to turn upward and rearward, it is possible to open the engine hood 38. Meanwhile, by causing the engine hood 38 to turn in a reverse direction, it is possible to close the engine hood 38.
- the steering unit 35 includes various manipulation members. As illustrated in FIG. 1 , the manipulation members include left and right paired traveling manipulation levers 36 and left and right paired work manipulation levers 37. In the present embodiment, the work manipulation levers 37 correspond to the manipulation levers. The operator can manipulate these manipulation members to give various instructions to the revolving work vehicle 1.
- the work device 13 includes a boom 41, an arm 42, and a bucket 43.
- the boom 41, the arm 42, and the bucket 43 are respectively coupled to hydraulic cylinders.
- By expanding and contracting the hydraulic cylinders it is possible to perform various kinds of work, such as excavation with the bucket 43.
- the driver's seat 39 As illustrated in FIG. 2 , the driver's seat 39, on which the operator can sit, is disposed at the center in a left-right direction of an upper surface of the upper revolving body 12.
- the driver's seat 39 is sandwiched by the left and right paired console boxes 52.
- the driver's seat 39 and the console boxes 52 are illustrated with the dashed lines in order to clearly show the hydraulic hoses 5L and 5R (described later) and other elements.
- the driver's seat 39 and the console boxes 52 are disposed on an upper surface of the engine hood 38 of the upper revolving body 12.
- the structures of the left and right console boxes 52 are symmetric to each other, and thus are substantially identical to each other.
- Each of the console boxes 52 supports a corresponding one of the work manipulation levers 37 and a corresponding one of the lock levers 56.
- the work manipulation levers 37 are disposed in upper portions of the console boxes 52 such that the work manipulation levers 37 protrude obliquely forward and upward.
- the operator can manipulate the work manipulation lever(s) 37 to give an instruction regarding an operation of the work device 13 or revolving of the upper revolving body 12.
- the work manipulation levers 37 are connected to remote control valves (operation valves) 62 disposed inside the console boxes 52, respectively.
- Each of the remote control valves 62 has one input port and four output ports.
- the input ports of the remote control valves 62 are connected to pumps in the hydraulic pump unit 34 via the hydraulic hoses 5L and 5R (described later).
- the output ports of the remote control valves 62 are connected to a control valve 84, which is disposed in a front portion of the upper revolving body 12, via the hydraulic hoses 5L and 5R.
- Each of the remote control valves 62 opens or closes a space between the input port and the output ports according to operator's manipulating a corresponding one of the work manipulation levers 37 in a front-rear direction and/or a left-right direction.
- operating oil is supplied from a corresponding one(s) of the remote control valves 62 to the control valve 84.
- the control valve 84 includes a plurality of spools (not illustrated) for driving or stopping the hydraulic actuators of the work device 13 and the like.
- the spools of the control valve 84 are displaced by pilot pressures of streams of operating oil from the remote control valves 62. This can actuate the hydraulic actuators to cause the upper revolving body 12 to revolve and/or to cause the work device 13 to perform various kinds of work.
- the lock levers 56 are disposed in lower portions of front surfaces of the console boxes 52 such that the lock levers 56 protrude obliquely forward and upward.
- the lock levers 56 are manipulated to change the postures of the console boxes 52.
- the console boxes 52 are supported such that the console boxes 52 are turnable about hinge shafts (second shafts) 72 disposed in the rear of the console boxes 52.
- the operator can manipulate the lock levers 56 to change the postures of the console boxes 52 between a normally-used first posture, which is indicated by the solid lines in FIG. 1 , and a second posture, which is indicated by the dotted lines in FIG. 1 , in a manner indicated by the hollow arrow in FIG. 1 .
- the first posture is a normal posture allowing the operator to manipulate the work manipulation levers 37.
- the second posture is achieved as a result of upward and rearward movement of the console box from the first posture.
- the second posture is selected to temporarily retract the console boxes 52 into an upward and rearward space so that the operator can get on or off the revolving work vehicle 1.
- a direction in which the closed engine hood 38 is caused to turn to be opened coincides with a direction in which the console boxes 52 are caused to turn to be changed from the first posture to the second posture.
- the console boxes 52 are caused to turn from the first posture to the second posture after the engine hood 38 is opened, the center of gravity of the entire turning configuration including the engine hood 38 and the console boxes 52 is shifted in the opening direction of the engine hood 38. Consequently, it is possible to keep the engine hood 38 opened in a stable manner.
- the revolving work vehicle 1 includes a hydraulic circuit having a lock function that disables manipulation of the work manipulation levers 37 while the console boxes 52 are in the second posture.
- the lock function can be achieved by controlling supply of operating oil to the remote control valves 62 in the following manner. That is, if a sensor and/or the like detects that the console boxes 52 are in the second posture, the supply of the operating oil to the remote control valves 62 is interrupted.
- the paired hydraulic hoses 5L and 5R are disposed on the left side and the right side, and have flexibility.
- Each of the left and right hydraulic hoses 5L and 5R includes four hoses connected to the output ports of a corresponding one of the remote control valves 62. The following will describe details of the hydraulic hoses 5L and 5R.
- the hydraulic hose 5L on the left side has a first end connected to the remote control valve 62 inside the console box 52 on the left side.
- the hydraulic hose 5L has a portion which extends from the connection with the remote control valve 62, which is curved in a substantial S-shape, and which is followed by a portion close to a hinge shaft 72. Following the portion close to the hinge shaft 72, a portion of the hydraulic hose 5L extends through an opening (not illustrated) in a lower surface of the console box 52 and an opening (not illustrated) at a left end of the upper surface of the engine hood 38. Following the portion extending through the openings, a portion of the hydraulic hose 5L is disposed inside the engine hood 38.
- the portion of the hydraulic hose 5L inside the engine hood 38 is bent toward the rear side at a location just below the opening in the engine hood 38. Following the bent portion, a portion of the hydraulic hose 5L extends obliquely rightward and rearward substantially along the ceiling surface of the engine hood 38. A portion of the hydraulic hose 5L which portion is close to the hinge portion 45 is bent substantially at a right angle. Following the bent portion, a portion of the hydraulic hose 5L extends downward along a longitudinal direction of the bracket 47 on the left side. To the bracket 47, holding members (fixing members) 8 arranged in a top-bottom direction are fixed. The holding members 8 are each made of a round-bar-shaped member curved in a C-shape or a hook shape. A portion of the hydraulic hose 5L extends through a space defined by inner sides of the holding members 8. This portion of the hydraulic hose 5L is partially close to a rotation shaft 71.
- This portion of the hydraulic hose 5L further extends to a location below the rotation shaft 71. Following the portion below the rotation shaft 71, a portion of the hydraulic hose 5L extends forward and downward so as to be slightly inclined leftward, so that the portion of the hydraulic hose 5L extends through a location below the left side of the engine 33.
- This portion of the hydraulic hose 5L which portion is close to the engine 33, is curved substantially in a V-shape protruding downward. From this portion (referred to as a curved portion 9), a portion of the hydraulic hose 5L extends substantially forward to a location below the left side of the control valve 84. Following this portion, a portion of the hydraulic hose 5L is bent upward as appropriate so as to be connected to the control valve 84.
- the hydraulic hose 5R on the right side has a first end connected to the remote control valve 62 inside the console box 52 on the right side.
- a portion of the hydraulic hose 5R extending from the remote control valve 62 to a rotation shaft 71 at the hinge portion 45 is substantially laterally symmetric to that of the hydraulic hose 5L on the left side, which has been described above. Therefore, explanation of this portion is omitted here.
- a portion of the hydraulic hose 5R extends to a location below the rotation shaft 71. Following this portion, a portion of the hydraulic hose 5R extends forward and downward so as to be inclined rightward, so that the portion of the hydraulic hose 5R extend through a location below the right side of the engine 33 and a location below the right side of the hydraulic pump unit 34. Following this portion, a portion of the hydraulic hose 5R extends leftward, and further extends forward to the location below the left side of the control valve 84. Following this portion, a portion of the hydraulic hose 5R is bent upward as appropriate so as to be connected to the control valve 84.
- the hydraulic hoses 5L and 5R are arranged along the inner wall of the revolving frame 31 and the inner wall of the engine hood 38.
- the space surrounded by the revolving frame 31 and the engine hood 38 can be secured large. Consequently, various kinds of devices can be arranged in the space effectively.
- Each of the left and right hydraulic hoses 5L and 5R has multiple portions which reside along its longitudinal direction and around which cable ties (fixing members) 7 are wound. With the cable ties 7, each of the hydraulic hoses 5L and 5R is fixed to the revolving frame 31, the engine hood 38, or the like. Some of the cable ties 7 are fixed at locations where the holding members 8 of the brackets 47 reside.
- a portion of each of the hydraulic hoses 5L and 5R which portion is interposed between a portion fixed with a holding member 8 close to a corresponding one of the rotation shafts 71 and a portion fixed with a cable tie 7 located the closest to this holding member 8 from among cable ties 7 above or below this holding member 8 is slightly curved and has slack. Thanks to the curved portions, it is possible to secure extension allowances of the hydraulic hoses 5L and 5R during opening operation of the engine hood 38, as illustrated in FIG. 4 . Consequently, it is possible to prevent a phenomenon that the hydraulic hoses 5L and 5R pull the engine hood 38 to hinder the opening operation.
- an output pulley 76 is fixed to a crankshaft on the left side of the engine 33.
- a fan pulley 77 and a tension pulley 78 are disposed at appropriate portions on a surface of the left side of the engine 33.
- an endless belt 79 is wound around the output pulley 76, the fan pulley 77, and the tension pulley 78.
- the curved portion 9 of the hydraulic hose 5L on the left side includes a portion that is close to a portion of the belt 79 interposed between the output pulley 76 and the tension pulley 78 while extending in parallel with this portion of the belt 79.
- the revolving work vehicle 1 of the present embodiment includes the revolving frame 31, the engine hood 38, and the console boxes 52.
- the engine 33 is disposed.
- the engine hood 38 is supported by the rotation shafts 71, which are disposed in the rear of the engine 33, so as to be turnable about the rotation shafts 71.
- the engine hood 38 is configured to turn relative to the revolving frame 31 to be opened or closed.
- Each of the console boxes 52 is supported by the hinge shaft 72, and is turnable about the hinge shaft 72, which is disposed above the engine hood 38.
- Each of the console boxes 52 is configured to turn relative to the engine hood 38 to be changed between the first posture and the second posture.
- the console boxes 52 respectively include the work manipulation levers 37 whose manipulation is enabled while the console boxes 52 are in the first posture and whose manipulation is disabled while the console boxes 52 are in the second posture.
- the direction in which the engine hood 38 is caused to turn to be opened coincides with the direction in which the console boxes 52 are caused to turn to be changed from the first posture to the second posture.
- the hydraulic hoses 5L and 5R, which are connected to the console boxes 52, are arranged to extend along the inner wall of the revolving frame 31 and the inner wall of the engine hood 38 and to be partially close to the rotation shafts 71 and the hinge shafts 72.
- the hydraulic hoses 5L and 5R are fixed to the revolving frame 31 or the engine hood 38 with the cable ties 7 or the holding members 7 arranged at intervals along the longitudinal directions of the hydraulic hoses 5L and 5R.
- the portion of each of the hydraulic hoses 5L and 5R which portion is located close to a corresponding one of the rotation shafts 71 and which is interposed between adjacent ones of the cable ties 7 or adjacent ones of the holding members 7 has slack.
- the hydraulic hose 5L on the left side has a portion curved downward such that a side of the portion farther from the console box 52 than is the rotation shaft 71 faces downward, and the portion thus curved (curved portion 9) is partially close to the engine 33.
- the engine 33 includes the output pulley 76, the fan pulley 77, and the belt 79.
- the output pulley 76 is configured to receive rotation transmitted from an output shaft.
- the fan pulley 77 is configured to drive a blower fan.
- the belt 79 is wound around the output pulley 76 and the fan pulley 77.
- the hydraulic hose 5L has a portion that is close to the belt 79 while extending in parallel with the belt 79.
- the routes along which the left and right hydraulic hoses 5L and 5R extend may be changed as appropriate, as long as the routes extend along the inner wall of the revolving frame 31 and the inner wall of the engine hood 38 and are partially close to the rotation shafts 71 and the hinge shafts 72.
- the inner walls encompass not only the inner surfaces of the side walls but also the lower surfaces of the ceiling walls and the upper surfaces of the floor walls.
- work manipulation levers 37 configured to be manipulated in the front-rear direction and the left-right direction
- work manipulation levers 37 configured to be manipulated solely in a front-rear direction or a left-right direction may be employed.
- a configuration including a single console box 52 disposed only on a left or right side may be employed.
- the present invention is applicable not only to the revolving work vehicle but also to work vehicles having other various configurations and other various purposes.
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Abstract
Description
- The present invention relates to a work vehicle including a console box.
- There has been known a work vehicle including console boxes disposed laterally to a driver's seat.
Patent Literatures 1 and 2 (hereinafter, referred to asPTLs 1 and 2, respectively) disclose this type of work vehicle. -
PTL 1 discloses a construction machine including an engine hood configured to open and close both of an opening on the upper side and an opening on the rear side of an engine room. The engine hood turns about a hinge attached to the front end of the engine hood. The engine hood includes an upper side portion having an upper surface on which a console box is disposed in such a manner that the console box is turnable together with the engine hood. - PTL 2 discloses a small construction machine including box covers turnable about an axis being at the upper edge of the front side of a main body cover. The box covers support their corresponding control boxes. Each of the box covers has a back surface to which a first end of a supporting column is attached via a bearing. A second end of the supporting column is fastened at a fastening hole in the main body cover. With this configuration, by lifting up the box covers and supporting rear ends of the box covers with the supporting columns, an opening for inspection and maintenance can be secured on the back surface sides of the box covers.
-
- PTL 1: Japanese Patent Application Laid-Open No.
2010-265582 - PTL 2: Japanese Patent No.
3610840 - According to the configuration of
PTL 1, however, if the console box is caused to turn toward the rear side of the engine hood with the engine hood opened, e.g., for the purpose of maintenance work, the engine hood may potentially be closed unintentionally as a result of the turning of the console box. - According to the configuration of PTL 2, the opening for inspection and maintenance secured by lifting up the box covers with the supporting columns is partial and limited. For the purpose of effective maintenance on devices placed in the engine room through the opening, devices requiring maintenance need to be arranged to be exposed in the opening. Namely, PTL 2 involves the limitation on the layout of the devices, disadvantageously.
- In addition, according to the configuration of PTL 2, maintenance on the engine and/or the like should be performed after the upper portion of the main body cover is entirely opened. However, according to the configuration of PTL 2, the top panel of the main body cover and the left and right box covers are independent of each other. Therefore, it is troublesome to open all the covers, and thus it is difficult to perform maintenance effectively. Thus, improvements have been required for the configuration of PTL 2 in terms of ease of maintenance.
- The present invention was made in view of the above circumstances, and has an object to provide a work vehicle with ease of maintenance.
- The problem to be solved by the present invention has been described above. Next, the following will describe solutions to this problem and effects achieved by the solutions.
- According to an aspect of the present invention, a work vehicle including the following features is provided. That is, the work vehicle includes a revolving frame, an engine hood, a console box, and a hydraulic hose. In the revolving frame, an engine is disposed. The engine hood is supported by a first shaft disposed in the rear of the engine such that the engine hood is turnable about the first shaft, and the engine hood is configured to turn relative to the revolving frame to be opened or closed. The console box is supported by a second shaft disposed above the engine hood, is turnable about the second shaft, and is configured to turn relative to the engine hood to be changed between a first posture and a second posture. The hydraulic hose is connected to the console box. The console box includes a work manipulation lever whose manipulation is enabled while the console box is in the first posture and whose manipulation is disabled while the console box is in the second posture. A direction in which the engine hood is caused to turn to be opened coincides with a direction in which the console box is caused to turn to be changed from the first posture to the second posture. The hydraulic hose is arranged to extend along an inner wall of the revolving frame and an inner wall of the engine hood and to be partially close to the first shaft and the second shaft.
- With this configuration, even when the engine hood is opened and then the console box is caused to turn to disable manipulation of the work manipulation lever, it is possible to prevent a phenomenon that the opened engine hood is closed unintentionally, since the center of gravity of the entire turning configuration including the engine hood and the console box is shifted in the opening direction of the engine hood. Consequently, it is possible to perform maintenance work free from care. In addition, since the hydraulic hose is positioned such that the hydraulic hose hardly interferes with the maintenance work, maintenance can be easily performed with the engine hood opened.
- The work vehicle described above preferably includes the following features. That is, the hydraulic hose is fixed to the revolving frame or the engine hood with fixing members arranged at intervals along a longitudinal direction of the hydraulic hose. In a state where the engine hood is closed, a portion of the hydraulic hose which portion is located close to the first shaft and which is interposed between adjacent ones of the fixing members has slack.
- With this configuration, it is possible to secure an extension allowance of the hydraulic hose at the location close to the first shaft, which is the rotation shaft of the engine hood, thereby making it possible to prevent a phenomenon that the hydraulic hose pulls the engine hood to hinder opening operation of the engine hood. Consequently, it is possible to open the engine hood smoothly.
- Preferably, in the work vehicle described above, the hydraulic hose has a portion curved downward such that a side of the portion farther from the console box than is the first shaft faces downward, and the portion thus curved is partially close to the engine.
- With this configuration, it is possible to arrange both of the engine and the hydraulic hose in a small space inside the engine hood.
- The work vehicle described above preferably includes the following features. That is, the engine includes an output pulley, a fan pulley, and a belt. The output pulley is configured to receive rotation transmitted from an output shaft. The fan pulley is configured to drive a blower fan. The belt is wound around the output pulley and the fan pulley. The hydraulic hose has a portion that is close to the belt while extending in parallel with the belt.
- With this configuration, it is possible to employ a short hydraulic hose, while preventing contact between the belt and the hydraulic hose.
-
- [
FIG. 1 ] A side view illustrating an overall structure of a work vehicle according to one embodiment of the present invention. - [
FIG. 2 ] A perspective view showing hydraulic hoses that are disposed inside an engine hood and that are connected to work manipulation levers in console boxes. - [
FIG. 3 ] A perspective view showing the hydraulic hoses viewed from a side different from that ofFIG. 2 . - [
FIG. 4 ] A perspective view showing a state where an engine hood is opened and the console boxes are in a second posture. - The following will describe embodiments of the present invention with reference to the drawings.
FIG. 1 is a side view illustrating an overall structure of a revolvingwork vehicle 1 according to one embodiment of the present invention.FIG. 2 is a perspective view showinghydraulic hoses engine hood 38 and that are connected to work manipulation levers 37 inconsole boxes 52.FIG. 3 is a perspective view showing thehydraulic hoses FIG. 2 .FIG. 4 is a perspective view showing a state where theengine hood 38 is opened and theconsole boxes 52 are in a second posture. - The expressions "front", "rear", "left", and "right" in the following description respectively mean the front, rear, left, and right for an operator sitting on a driver's
seat 39 in a state where both of alower traveling body 11 and an upper revolving body 12 (each will be described later) face the front. - The revolving work vehicle (work vehicle) 1 of the present embodiment illustrated in
FIG. 1 includes the lower travelingbody 11 and the upper revolvingbody 12. - The
lower traveling body 11 includes left and right pairedcrawler traveling devices 21 and hydraulic motors (not illustrated) configured to drive thecrawler traveling devices 21. By individually driving the left and rightcrawler traveling devices 21 in various directions at various speeds, it is possible to drive the lower travelingbody 11 so that the lower travelingbody 11 travels in various ways, e.g., travels straight forward or backward or makes a turn. - The upper revolving
body 12 includes a revolvingframe 31, anengine 33, ahydraulic pump unit 34, theengine hood 38, asteering unit 35, and awork device 13. - The revolving
frame 31 is disposed above the lower travelingbody 11. The revolvingframe 31 is supported by the lower travelingbody 11 such that the revolvingframe 31 is turnable about a vertical axis. By a revolving motor (not illustrated), the revolvingframe 31 can be driven to turn relative to the lower travelingbody 11. Theengine 33 is a diesel engine, for example. Theengine 33 is disposed in a rear portion of the revolvingframe 31. Thehydraulic pump unit 34 is driven by theengine 33 to generate hydraulic force that the revolvingwork vehicle 1 requires to travel and to perform work. - The
engine hood 38 covers and protects an upper surface and the like of theengine 33. As illustrated inFIG. 2 , theengine hood 38 has a rear portion coupled to the revolvingframe 31 via ahinge portion 45, which is attached to a rear portion of the revolvingframe 31. - The
hinge portion 45 includes abase member 46 and left and right pairedbrackets 47. The base member is fixed to the rear portion of the revolvingframe 31 with a fixing member (not illustrated). Each of thebrackets 47 is thin and elongated in a top-bottom direction, and is fixed to an inner wall of the rear portion of theengine hood 38. - This configuration makes the
engine hood 38 turnable about a rotation shaft (first shaft) 71, which is disposed in the rear of theengine 33 and extends in a left-right horizontal direction, relative to the revolvingframe 31. Specifically, by causing theengine hood 38 to turn upward and rearward, it is possible to open theengine hood 38. Meanwhile, by causing theengine hood 38 to turn in a reverse direction, it is possible to close theengine hood 38. - The
steering unit 35 includes various manipulation members. As illustrated inFIG. 1 , the manipulation members include left and right paired traveling manipulation levers 36 and left and right paired work manipulation levers 37. In the present embodiment, the work manipulation levers 37 correspond to the manipulation levers. The operator can manipulate these manipulation members to give various instructions to the revolvingwork vehicle 1. - The
work device 13 includes aboom 41, anarm 42, and abucket 43. Theboom 41, thearm 42, and thebucket 43 are respectively coupled to hydraulic cylinders. By expanding and contracting the hydraulic cylinders, it is possible to perform various kinds of work, such as excavation with thebucket 43. - As illustrated in
FIG. 2 , the driver'sseat 39, on which the operator can sit, is disposed at the center in a left-right direction of an upper surface of the upper revolvingbody 12. The driver'sseat 39 is sandwiched by the left and right pairedconsole boxes 52. InFIG. 2 , the driver'sseat 39 and theconsole boxes 52 are illustrated with the dashed lines in order to clearly show thehydraulic hoses seat 39 and theconsole boxes 52 are disposed on an upper surface of theengine hood 38 of the upper revolvingbody 12. - The structures of the left and
right console boxes 52 are symmetric to each other, and thus are substantially identical to each other. Each of theconsole boxes 52 supports a corresponding one of the work manipulation levers 37 and a corresponding one of the lock levers 56. - The work manipulation levers 37 are disposed in upper portions of the
console boxes 52 such that the work manipulation levers 37 protrude obliquely forward and upward. The operator can manipulate the work manipulation lever(s) 37 to give an instruction regarding an operation of thework device 13 or revolving of the upper revolvingbody 12. - The work manipulation levers 37 are connected to remote control valves (operation valves) 62 disposed inside the
console boxes 52, respectively. Each of theremote control valves 62 has one input port and four output ports. The input ports of theremote control valves 62 are connected to pumps in thehydraulic pump unit 34 via thehydraulic hoses remote control valves 62 are connected to acontrol valve 84, which is disposed in a front portion of the upper revolvingbody 12, via thehydraulic hoses remote control valves 62 opens or closes a space between the input port and the output ports according to operator's manipulating a corresponding one of the work manipulation levers 37 in a front-rear direction and/or a left-right direction. When the output ports are opened, operating oil is supplied from a corresponding one(s) of theremote control valves 62 to thecontrol valve 84. - The
control valve 84 includes a plurality of spools (not illustrated) for driving or stopping the hydraulic actuators of thework device 13 and the like. The spools of thecontrol valve 84 are displaced by pilot pressures of streams of operating oil from theremote control valves 62. This can actuate the hydraulic actuators to cause the upper revolvingbody 12 to revolve and/or to cause thework device 13 to perform various kinds of work. - The lock levers 56 are disposed in lower portions of front surfaces of the
console boxes 52 such that the lock levers 56 protrude obliquely forward and upward. The lock levers 56 are manipulated to change the postures of theconsole boxes 52. - Specifically, the
console boxes 52 are supported such that theconsole boxes 52 are turnable about hinge shafts (second shafts) 72 disposed in the rear of theconsole boxes 52. The operator can manipulate the lock levers 56 to change the postures of theconsole boxes 52 between a normally-used first posture, which is indicated by the solid lines inFIG. 1 , and a second posture, which is indicated by the dotted lines inFIG. 1 , in a manner indicated by the hollow arrow inFIG. 1 . The first posture is a normal posture allowing the operator to manipulate the work manipulation levers 37. The second posture is achieved as a result of upward and rearward movement of the console box from the first posture. For example, the second posture is selected to temporarily retract theconsole boxes 52 into an upward and rearward space so that the operator can get on or off the revolvingwork vehicle 1. - A direction in which the
closed engine hood 38 is caused to turn to be opened coincides with a direction in which theconsole boxes 52 are caused to turn to be changed from the first posture to the second posture. Thus, in a case where theconsole boxes 52 are caused to turn from the first posture to the second posture after theengine hood 38 is opened, the center of gravity of the entire turning configuration including theengine hood 38 and theconsole boxes 52 is shifted in the opening direction of theengine hood 38. Consequently, it is possible to keep theengine hood 38 opened in a stable manner. - The revolving
work vehicle 1 includes a hydraulic circuit having a lock function that disables manipulation of the work manipulation levers 37 while theconsole boxes 52 are in the second posture. Thus, even if the operator's hand or the like unintentionally comes into contact with the work manipulation lever(s) 37 of the console box(es) 52 being in the second posture, it is possible to prevent a phenomenon that an unexpected operation is executed in response to the contact. For example, the lock function can be achieved by controlling supply of operating oil to theremote control valves 62 in the following manner. That is, if a sensor and/or the like detects that theconsole boxes 52 are in the second posture, the supply of the operating oil to theremote control valves 62 is interrupted. - The paired
hydraulic hoses hydraulic hoses remote control valves 62. The following will describe details of thehydraulic hoses - The
hydraulic hose 5L on the left side has a first end connected to theremote control valve 62 inside theconsole box 52 on the left side. Thehydraulic hose 5L has a portion which extends from the connection with theremote control valve 62, which is curved in a substantial S-shape, and which is followed by a portion close to ahinge shaft 72. Following the portion close to thehinge shaft 72, a portion of thehydraulic hose 5L extends through an opening (not illustrated) in a lower surface of theconsole box 52 and an opening (not illustrated) at a left end of the upper surface of theengine hood 38. Following the portion extending through the openings, a portion of thehydraulic hose 5L is disposed inside theengine hood 38. - The portion of the
hydraulic hose 5L inside theengine hood 38 is bent toward the rear side at a location just below the opening in theengine hood 38. Following the bent portion, a portion of thehydraulic hose 5L extends obliquely rightward and rearward substantially along the ceiling surface of theengine hood 38. A portion of thehydraulic hose 5L which portion is close to thehinge portion 45 is bent substantially at a right angle. Following the bent portion, a portion of thehydraulic hose 5L extends downward along a longitudinal direction of thebracket 47 on the left side. To thebracket 47, holding members (fixing members) 8 arranged in a top-bottom direction are fixed. The holdingmembers 8 are each made of a round-bar-shaped member curved in a C-shape or a hook shape. A portion of thehydraulic hose 5L extends through a space defined by inner sides of the holdingmembers 8. This portion of thehydraulic hose 5L is partially close to arotation shaft 71. - This portion of the
hydraulic hose 5L further extends to a location below therotation shaft 71. Following the portion below therotation shaft 71, a portion of thehydraulic hose 5L extends forward and downward so as to be slightly inclined leftward, so that the portion of thehydraulic hose 5L extends through a location below the left side of theengine 33. This portion of thehydraulic hose 5L, which portion is close to theengine 33, is curved substantially in a V-shape protruding downward. From this portion (referred to as a curved portion 9), a portion of thehydraulic hose 5L extends substantially forward to a location below the left side of thecontrol valve 84. Following this portion, a portion of thehydraulic hose 5L is bent upward as appropriate so as to be connected to thecontrol valve 84. - The
hydraulic hose 5R on the right side has a first end connected to theremote control valve 62 inside theconsole box 52 on the right side. A portion of thehydraulic hose 5R extending from theremote control valve 62 to arotation shaft 71 at thehinge portion 45 is substantially laterally symmetric to that of thehydraulic hose 5L on the left side, which has been described above. Therefore, explanation of this portion is omitted here. - Following the above-described portion, a portion of the
hydraulic hose 5R extends to a location below therotation shaft 71. Following this portion, a portion of thehydraulic hose 5R extends forward and downward so as to be inclined rightward, so that the portion of thehydraulic hose 5R extend through a location below the right side of theengine 33 and a location below the right side of thehydraulic pump unit 34. Following this portion, a portion of thehydraulic hose 5R extends leftward, and further extends forward to the location below the left side of thecontrol valve 84. Following this portion, a portion of thehydraulic hose 5R is bent upward as appropriate so as to be connected to thecontrol valve 84. - In this manner, the
hydraulic hoses frame 31 and the inner wall of theengine hood 38. With this configuration, the space surrounded by the revolvingframe 31 and theengine hood 38 can be secured large. Consequently, various kinds of devices can be arranged in the space effectively. - Each of the left and right
hydraulic hoses cable ties 7, each of thehydraulic hoses frame 31, theengine hood 38, or the like. Some of thecable ties 7 are fixed at locations where the holdingmembers 8 of thebrackets 47 reside. - In a state where the
engine hood 38 is closed as illustrated inFIGs. 2 and3 , a portion of each of thehydraulic hoses member 8 close to a corresponding one of therotation shafts 71 and a portion fixed with acable tie 7 located the closest to this holdingmember 8 from amongcable ties 7 above or below this holdingmember 8 is slightly curved and has slack. Thanks to the curved portions, it is possible to secure extension allowances of thehydraulic hoses engine hood 38, as illustrated inFIG. 4 . Consequently, it is possible to prevent a phenomenon that thehydraulic hoses engine hood 38 to hinder the opening operation. - As illustrated in
FIG. 2 , anoutput pulley 76 is fixed to a crankshaft on the left side of theengine 33. In addition, afan pulley 77 and atension pulley 78 are disposed at appropriate portions on a surface of the left side of theengine 33. Around theoutput pulley 76, thefan pulley 77, and thetension pulley 78, anendless belt 79 is wound. In the present embodiment, thecurved portion 9 of thehydraulic hose 5L on the left side includes a portion that is close to a portion of thebelt 79 interposed between theoutput pulley 76 and thetension pulley 78 while extending in parallel with this portion of thebelt 79. With this configuration, it is possible to arrange theengine 33 and thehydraulic hose 5L in a small space while preventing a phenomenon that thebelt 79 gets tangled with thehydraulic hose 5L, for example. - As described above, the revolving
work vehicle 1 of the present embodiment includes the revolvingframe 31, theengine hood 38, and theconsole boxes 52. In the revolvingframe 31, theengine 33 is disposed. Theengine hood 38 is supported by therotation shafts 71, which are disposed in the rear of theengine 33, so as to be turnable about therotation shafts 71. Theengine hood 38 is configured to turn relative to the revolvingframe 31 to be opened or closed. Each of theconsole boxes 52 is supported by thehinge shaft 72, and is turnable about thehinge shaft 72, which is disposed above theengine hood 38. Each of theconsole boxes 52 is configured to turn relative to theengine hood 38 to be changed between the first posture and the second posture. Theconsole boxes 52 respectively include the work manipulation levers 37 whose manipulation is enabled while theconsole boxes 52 are in the first posture and whose manipulation is disabled while theconsole boxes 52 are in the second posture. The direction in which theengine hood 38 is caused to turn to be opened coincides with the direction in which theconsole boxes 52 are caused to turn to be changed from the first posture to the second posture. Thehydraulic hoses console boxes 52, are arranged to extend along the inner wall of the revolvingframe 31 and the inner wall of theengine hood 38 and to be partially close to therotation shafts 71 and thehinge shafts 72. - With this configuration, even when the
engine hood 38 is opened and then theconsole boxes 52 are caused to turn to disable manipulation of the work manipulation levers 37, it is possible to prevent a phenomenon that the openedengine hood 38 is closed unintentionally, since the center of gravity of the turning configuration including theengine hood 38 and the centers of gravity of theconsole boxes 52 is shifted in the opening direction of theengine hood 38. Consequently, it is possible to perform maintenance work free from care. In addition, since thehydraulic hoses hydraulic hoses engine hood 38 opened. - In the revolving
work vehicle 1 of the present embodiment, thehydraulic hoses frame 31 or theengine hood 38 with thecable ties 7 or the holdingmembers 7 arranged at intervals along the longitudinal directions of thehydraulic hoses engine hood 38 is closed, the portion of each of thehydraulic hoses rotation shafts 71 and which is interposed between adjacent ones of thecable ties 7 or adjacent ones of the holdingmembers 7 has slack. - With this configuration, it is possible to secure extension allowances of the
hydraulic hoses rotation shafts 71 of theengine hood 38, thereby making it possible to prevent a phenomenon that thehydraulic hoses engine hood 38 to hinder opening operation of theengine hood 38. Consequently, it is possible to open theengine hood 38 smoothly. - As illustrated in
FIG. 2 , in the revolvingwork vehicle 1 of the present embodiment, thehydraulic hose 5L on the left side has a portion curved downward such that a side of the portion farther from theconsole box 52 than is therotation shaft 71 faces downward, and the portion thus curved (curved portion 9) is partially close to theengine 33. - With this configuration, it is possible to arrange both of the
engine 33 and thehydraulic hose 5L in a small space inside theengine hood 38. - In the revolving
work vehicle 1 of the present embodiment, theengine 33 includes theoutput pulley 76, thefan pulley 77, and thebelt 79. Theoutput pulley 76 is configured to receive rotation transmitted from an output shaft. Thefan pulley 77 is configured to drive a blower fan. Thebelt 79 is wound around theoutput pulley 76 and thefan pulley 77. Thehydraulic hose 5L has a portion that is close to thebelt 79 while extending in parallel with thebelt 79. - With this configuration, it is possible to employ a short
hydraulic hose 5L, while preventing contact between thebelt 79 and thehydraulic hose 5L. - The preferred embodiments of the present invention have been described above. However, the configurations described above can be modified as below, for example.
- The routes along which the left and right
hydraulic hoses frame 31 and the inner wall of theengine hood 38 and are partially close to therotation shafts 71 and thehinge shafts 72. Here, the inner walls encompass not only the inner surfaces of the side walls but also the lower surfaces of the ceiling walls and the upper surfaces of the floor walls. - Instead of the work manipulation levers 37 configured to be manipulated in the front-rear direction and the left-right direction, work manipulation levers 37 configured to be manipulated solely in a front-rear direction or a left-right direction may be employed.
- Instead of the configuration including the left and right paired
console boxes 52, a configuration including asingle console box 52 disposed only on a left or right side may be employed. - The present invention is applicable not only to the revolving work vehicle but also to work vehicles having other various configurations and other various purposes.
-
- 1
- revolving work vehicle (work vehicle)
- 5L, 5R
- hydraulic hose
- 7
- cable tie (fixing member)
- 8
- holding member (fixing member)
- 31
- revolving frame
- 33
- engine
- 37
- work manipulation lever (manipulation lever)
- 38
- engine hood
- 52
- console box
- 71
- rotation shaft (first shaft)
- 72
- hinge shaft (second shaft)
Claims (4)
- A work vehicle comprising:a revolving frame in which an engine is disposed;an engine hood supported by a first shaft disposed in rear of the engine, the engine hood being turnable about the first shaft, the engine hood being configured to turn relative to the revolving frame to be opened or closed;a console box supported by a second shaft disposed above the engine hood, the console box being turnable about the second shaft, the console box being configured to turn relative to the engine hood to be changed between a first posture and a second posture; anda hydraulic hose connected to the console box, whereinthe console box includes a work manipulation lever whose manipulation is enabled while the console box is in the first posture and whose manipulation is disabled while the console box is in the second posture,a direction in which the engine hood is caused to turn to be opened coincides with a direction in which the console box is caused to turn to be changed from the first posture to the second posture, andthe hydraulic hose is arranged to extend along an inner wall of the revolving frame and an inner wall of the engine hood and to be partially close to the first shaft and the second shaft.
- The work vehicle according to claim 1, wherein
the hydraulic hose is fixed to the revolving frame or the engine hood with fixing members arranged at intervals along a longitudinal direction of the hydraulic hose, and
in a state where the engine hood is closed, a portion of the hydraulic hose which portion is located close to the first shaft and which is interposed between adjacent ones of the fixing members has slack. - The work vehicle according to claim 1, wherein
the hydraulic hose has a portion curved downward such that a side of the portion farther from the console box than is the first shaft faces downward, and the portion thus curved is partially close to the engine. - The work vehicle according to claim 3, wherein
the engine includesan output pulley configured to receive rotation transmitted from an output shaft,a fan pulley configured to drive a blower fan, anda belt wound around the output pulley and the fan pulley, andthe hydraulic hose has a portion that is close to the belt while extending in parallel with the belt.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP23159038.1A EP4215674A1 (en) | 2017-09-14 | 2018-07-05 | Work vehicle |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2017176443A JP6731898B2 (en) | 2017-09-14 | 2017-09-14 | Work vehicle |
PCT/JP2018/025566 WO2019054021A1 (en) | 2017-09-14 | 2018-07-05 | Work vehicle |
Related Child Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP23159038.1A Division EP4215674A1 (en) | 2017-09-14 | 2018-07-05 | Work vehicle |
EP23159038.1A Division-Into EP4215674A1 (en) | 2017-09-14 | 2018-07-05 | Work vehicle |
Publications (3)
Publication Number | Publication Date |
---|---|
EP3683363A1 true EP3683363A1 (en) | 2020-07-22 |
EP3683363A4 EP3683363A4 (en) | 2021-12-15 |
EP3683363B1 EP3683363B1 (en) | 2023-04-19 |
Family
ID=65723568
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP23159038.1A Pending EP4215674A1 (en) | 2017-09-14 | 2018-07-05 | Work vehicle |
EP18855760.7A Active EP3683363B1 (en) | 2017-09-14 | 2018-07-05 | Work vehicle |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP23159038.1A Pending EP4215674A1 (en) | 2017-09-14 | 2018-07-05 | Work vehicle |
Country Status (4)
Country | Link |
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EP (2) | EP4215674A1 (en) |
JP (1) | JP6731898B2 (en) |
KR (1) | KR102208847B1 (en) |
WO (1) | WO2019054021A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20220034063A1 (en) * | 2020-08-03 | 2022-02-03 | Kubota Corporation | Work vehicle |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS53149989A (en) | 1977-06-02 | 1978-12-27 | Meiji Seika Kaisha Ltd | Novel derivatives of macrolide antibiotics and their preparation |
JPS61840A (en) | 1984-06-12 | 1986-01-06 | Matsushita Electric Ind Co Ltd | Self-diagnosis device of portable data terminal |
JPH0421879Y2 (en) * | 1985-07-16 | 1992-05-19 | ||
JP3478204B2 (en) * | 1999-10-07 | 2003-12-15 | コベルコ建機株式会社 | Control piping structure for small construction machinery |
JP3747434B2 (en) * | 2000-12-28 | 2006-02-22 | 日立建機株式会社 | Console box equipment for construction machinery |
JP5381309B2 (en) | 2009-05-12 | 2014-01-08 | コベルコ建機株式会社 | Construction machinery |
-
2017
- 2017-09-14 JP JP2017176443A patent/JP6731898B2/en active Active
-
2018
- 2018-07-05 EP EP23159038.1A patent/EP4215674A1/en active Pending
- 2018-07-05 WO PCT/JP2018/025566 patent/WO2019054021A1/en unknown
- 2018-07-05 EP EP18855760.7A patent/EP3683363B1/en active Active
- 2018-07-05 KR KR1020197023629A patent/KR102208847B1/en active IP Right Grant
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20220034063A1 (en) * | 2020-08-03 | 2022-02-03 | Kubota Corporation | Work vehicle |
US11713558B2 (en) * | 2020-08-03 | 2023-08-01 | Kubota Corporation | Work vehicle |
Also Published As
Publication number | Publication date |
---|---|
BR112020002977A2 (en) | 2020-08-11 |
EP3683363A4 (en) | 2021-12-15 |
WO2019054021A1 (en) | 2019-03-21 |
KR102208847B1 (en) | 2021-01-27 |
JP2019052456A (en) | 2019-04-04 |
EP4215674A1 (en) | 2023-07-26 |
KR20190108124A (en) | 2019-09-23 |
JP6731898B2 (en) | 2020-07-29 |
EP3683363B1 (en) | 2023-04-19 |
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