US20220316177A1 - Cab and work vehicle - Google Patents

Cab and work vehicle Download PDF

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Publication number
US20220316177A1
US20220316177A1 US17/612,754 US202017612754A US2022316177A1 US 20220316177 A1 US20220316177 A1 US 20220316177A1 US 202017612754 A US202017612754 A US 202017612754A US 2022316177 A1 US2022316177 A1 US 2022316177A1
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US
United States
Prior art keywords
disposed
operator
control lever
monitor
cab
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.)
Pending
Application number
US17/612,754
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English (en)
Inventor
Norihiro IWAHASHI
Tomoko Kikuma
Makoto Sasaki
Hiroaki Tanaka
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Komatsu Ltd
Original Assignee
Komatsu Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
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Assigned to KOMATSU LTD. reassignment KOMATSU LTD. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: IWAHASHI, Norihiro, KIKUMA, TOMOKO, SASAKI, MAKOTO, TANAKA, HIROAKI
Publication of US20220316177A1 publication Critical patent/US20220316177A1/en
Pending legal-status Critical Current

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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
    • E02F9/16—Cabins, platforms, or the like, for drivers
    • 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
    • E02F9/16—Cabins, platforms, or the like, for drivers
    • E02F9/166—Cabins, platforms, or the like, for drivers movable, tiltable or pivoting, e.g. movable seats, dampening arrangements of cabins
    • 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
    • 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
    • E02F3/30—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 with a dipper-arm pivoted on a cantilever beam, i.e. boom
    • 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
    • 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
    • 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
    • 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
    • E02F9/26—Indicating devices
    • 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
    • E02F9/26—Indicating devices
    • E02F9/261—Surveying the work-site to be treated

Definitions

  • the present disclosure relates to a cab and a work vehicle.
  • Japanese Patent Laying-Open No. 2014-136943 discloses a hydraulic excavator equipped with a cab.
  • a front corner of the cab is provided with a monitoring device having a flat display screen for performing various monitoring functions and a monitor for displaying the current position of the hydraulic excavator received from the outside.
  • Japanese Patent Laying-Open No. 2008-8122 discloses a hydraulic excavator equipped with an operator's cab. A right side of the cab is provided with a control panel. The control panel is installed with a monitor.
  • the monitor In the hydraulic excavator disclosed in PTL 2, the monitor is installed in the control panel provided on the right side of the cab. In this case, due to the structural reasons that the monitor is integrated with the side wall of the operator's cab, it is difficult to bring the monitor close to the operator's seat by a certain amount or more in the leftward and rightward direction. Therefore, the operator seated in the operator's seat may feel difficult to have a clear view of the monitor.
  • a cab includes an operator's seat, a console, a control lever, and a display unit.
  • the console is disposed on a lateral side of the operator's seat.
  • the control lever is disposed in the console.
  • the control lever is used to control a work implement.
  • the display unit is disposed in the console. In a top view, the control lever and the display unit are disposed in this order from the operator's seat toward the outside.
  • a work vehicle includes a cab and a work implement.
  • the work implement is controlled by the control lever.
  • a cab which enables an operator a clear view of the display unit, and a work vehicle equipped with such a cab.
  • FIG. 1 is a perspective view illustrating a hydraulic excavator
  • FIG. 2 is a perspective view illustrating a cab of FIG. 1 ;
  • FIG. 3 is another perspective view illustrating the cab of FIG. 1 ;
  • FIG. 4 is a perspective view illustrating the inside of the cab of FIG. 1 ;
  • FIG. 5 is a top view illustrating an operator's seat and components on the right side of the operator's seat in the cab of FIG. 1 ;
  • FIG. 6 is a front view illustrating an operator's seat and components on the right side of the operator's seat in the cab of FIG. 1 ;
  • FIG. 7 is a side view illustrating the inside of the cab in the arrow direction of line VII-VII in FIG. 6 ;
  • FIG. 8 is an enlarged top view illustrating a control lever and a monitor in FIG. 5 ;
  • FIG. 9 is an enlarged front view illustrating a control lever and a monitor in FIG. 6 ;
  • FIG. 10 is an enlarged side view illustrating a control lever and a monitor in FIG. 7 ;
  • FIG. 12 is a perspective view illustrating a structure for attaching the monitor to the console
  • FIG. 13 is another perspective view illustrating a structure for attaching the monitor to the console
  • FIG. 14 is a perspective view illustrating still another structure for attaching the monitor to the console
  • FIG. 15 is a top view illustrating the inside of the cab when the monitor is adjusted to the upper and front slide end;
  • FIG. 16 is a front view illustrating the inside of the cab when the monitor is adjusted to the upper and front slide end;
  • FIG. 17 is a side view illustrating the inside of the cab when the monitor is adjusted to the upper and front slide end.
  • FIG. 1 is a perspective view illustrating a hydraulic excavator. First, the overall structure of a hydraulic excavator equipped with a cab according to the present embodiment will be described.
  • the hydraulic excavator 100 includes a vehicle body 11 and a work implement 12 .
  • the vehicle body 11 includes a revolving unit 13 and a travel unit 15 .
  • the travel unit 15 is provided with a pair of crawler belts 15 Cr and a travel motor 15 M.
  • the hydraulic excavator 100 travels by the rolling of the pair of crawler belts 15 Cr.
  • the travel motor 15 M is provided as a driving source for the travel unit 15 .
  • the travel unit 15 may be provided with wheels (tires).
  • the revolving unit 13 is disposed on the travel unit 15 .
  • the revolving unit 13 is configured to revolve about a revolving center 26 with respect to the travel unit 15 .
  • the revolving center 26 is an axis extending in the upward and downward direction.
  • the revolving unit 13 includes a cab (operator's room) 30 .
  • a living space 120 of an operator is formed in the cab 30 .
  • An operator's seat 31 is disposed in the living space 120 of the operator. The operator gets into the living space 120 , seats on the operator's seat 31 , and operates the hydraulic excavator 100 .
  • the revolving unit 13 includes an engine compartment 19 and a counterweight disposed at a rear portion of the revolving unit 13 .
  • the engine compartment 19 houses therein an engine, a hydraulic oil tank, an air cleaner, a hydraulic pump, and the like.
  • the work implement 12 is attached to the vehicle body 11 .
  • the work implement 12 is attached to the revolving unit 13 .
  • the work implement 12 performs works such as land excavation and the like.
  • the work implement 12 includes a boom 16 , an arm 17 , and a bucket 18 .
  • the boom 16 is rotatably connected to the vehicle body 11 (the revolving unit 13 ) via a boom pin 23 .
  • the arm 17 is rotatably connected to the boom 16 via an arm pin 24 .
  • the bucket 18 is rotatably connected to the arm 17 via a bucket pin 25 .
  • the work implement 12 further includes a boom cylinder 20 A, a boom cylinder 20 B, an arm cylinder 21 , and a bucket cylinder 22 .
  • the boom cylinder 20 A, the boom cylinder 20 B, the arm cylinder 21 , and the bucket cylinder 22 are hydraulic cylinders driven by hydraulic oil.
  • the boom cylinder 20 A and the boom cylinder 20 B are disposed in pair on both sides of the boom 16 and configured to rotate the boom 16 .
  • the arm cylinder 21 is configured to rotate the arm 17 .
  • the bucket cylinder 22 is configured to rotate the bucket 18 .
  • the forward and rearward direction refers to a forward direction and a rearward direction of the operator seated on the operator's seat 31 .
  • the direction facing the operator seated on the operator's seat 31 is defined as the forward direction, and the direction rearward the operator seated on the operator's seat 31 is defined as the rearward direction.
  • the leftward and rightward direction (lateral direction) refers to a leftward direction and a rightward direction of the operator seated on the operator's seat 31 .
  • the right side of the operator is defined as the rightward direction
  • the left side of the operator is defined as the leftward direction.
  • the upward and downward direction refers to a direction orthogonal to a plane defined by the forward and rearward direction and the leftward and rightward direction.
  • the side downward the ground is defined as a downward direction
  • the side upward the sky is defined as an upward direction.
  • FIGS. 2 and 3 are perspective views illustrating the cab of FIG. 1 .
  • the structure of the cab 30 will be described hereinafter.
  • the cab 30 is a rectangular parallelepiped box having a front face 30 A, a rear face 30 B, a right side face 30 C, a left side face 30 D, a top face 30 E, and a bottom face 30 F.
  • the front face 30 A is disposed to face the forward direction.
  • the rear face 30 B is disposed to face the rearward direction.
  • the right side face 30 C is disposed to face the rightward direction.
  • the right side face 30 C faces the work implement 12 illustrated in FIG. 1 in the leftward and rightward direction.
  • the left side face 30 D is disposed to face the leftward direction.
  • the top face 30 E is disposed to face the upward direction.
  • the bottom face 30 F is disposed to face the downward direction.
  • the cab 30 includes a floor member 40 , a pillar member 42 L, a pair of left and right pillar members 43 ( 43 L, 43 R), a pair of left and right pillar members 44 ( 44 L, 44 R), beam members 51 , 52 and 53 , a pair of left and right girder members 54 ( 54 L, 54 R), and a pair of left and right girder members 55 ( 55 L, 55 R).
  • the floor member 40 , the pillar member 42 L, the pillar members 43 , the pillar members 44 , the beam members 51 , 52 and 53 , the girder members 54 , and the girder members 55 are integrated with each other by welding so as to form a cab frame.
  • the floor member 40 is disposed on the bottom face 30 F.
  • the floor member 40 is made of a plate material (for example, a steel plate).
  • the pillar member 42 L, the pillar member 43 , the pillar member 44 , the beam members 51 , 52 and 53 , the girder member 54 , and the girder member 55 are made of a frame member longer in one direction.
  • the pillar member 42 L, the pillar member 43 , the pillar member 44 , the beam members 51 , 52 and 53 , the girder member 54 , and the girder member 55 are disposed around the living space 120 of the operator illustrated in FIG. 1 .
  • the living space 120 of the operator is surrounded by the pillar member 42 L, the pillar member 43 , the pillar member 44 , the beam members 51 , 52 and 53 , the girder member 54 , and the girder member 55 .
  • the pillar members 42 L, 43 and 44 are disposed on the floor member 40 in the upward and downward direction.
  • the pillar members 42 L, 43 and 44 are connected to the floor member 40 .
  • the pillar members 42 L, 43 and 44 extend between the top face 30 E and the bottom face 30 F in the upward and downward direction.
  • the pillar member 42 L is disposed at a corner where the front face 30 A and the left side face 30 D intersect with each other.
  • the pillar member 42 L is disposed at the front end of the front face 30 A.
  • the pillar member 42 L is disposed in front of the operator's seat 31 illustrated in FIG. 1 .
  • the pillar members 43 L and 43 R are spaced from each other in the leftward and rightward direction.
  • the pillar members 43 L and 43 R are disposed at positions opposed to each other in the leftward and rightward direction.
  • the pillar members 43 L and 43 R are disposed on both lateral sides of the operator's seat 31 illustrated in FIG. 1 .
  • the pillar member 43 L is disposed on the left side face 30 D.
  • the pillar member 43 R is disposed on the right side face 30 C.
  • the pillar members 43 L and 43 R are disposed behind the pillar member 42 L.
  • the pillar member 44 L and the pillar member 44 R are spaced from each other in the leftward and rightward direction.
  • the pillar members 44 L and 44 R are disposed at positions opposed to each other in the leftward and rightward direction.
  • the pillar member 44 L is disposed at a corner where the left side face 30 D and the rear face 30 B intersect with each other.
  • the pillar member 44 L is disposed at the rear end of the left side face 30 D.
  • the pillar member 44 R is disposed at a corner where the right side face 30 C and the rear face 30 B intersect with each other.
  • the pillar member 44 R is disposed at the rear end of the right side face 30 C.
  • the pillar members 44 L and 44 R are disposed behind the pillar members 43 L and 43 R.
  • the pillar members 44 L and 44 R are disposed behind the operator's seat 31 illustrated in FIG. 1 .
  • the beam members 51 , 52 and 53 , the girder member 54 , and the girder member 55 are disposed on the top face 30 E.
  • the beam member 51 , the beam member 52 , and the beam member 53 extend in the leftward and rightward direction.
  • the girder members 54 and 55 extend in the forward and rearward direction.
  • the beam member 51 is disposed at a corner where the front face 30 A and the top face 30 E intersect with each other.
  • the left end of the beam member 51 is connected to a joint between the pillar member 42 L and the girder member 54 L described later.
  • the right end of the beam member 51 is connected to the front end of a girder member 54 R to be described later.
  • the beam member 52 is disposed behind the beam member 51 .
  • the right end of the beam member 52 is connected to the upper end of the pillar member 43 R.
  • the left end of the beam member 52 is connected to the upper end of the pillar member 43 L.
  • the beam member 53 is disposed at a corner where the top face 30 E and the rear face 30 B intersect with each other.
  • the beam member 53 is disposed behind the beam member 52 .
  • the right end of the beam member 53 is connected to the upper end of the pillar member 44 R.
  • the left end of the beam member 53 is connected to the upper end of the pillar member 44 L.
  • the girder members 54 L and 54 R are spaced from each other in the leftward and rightward direction.
  • the girder members 54 L and 54 R are disposed at positions opposed to each other in the leftward and rightward direction.
  • the girder member 54 L is disposed at a corner where the left side face 30 D and the top face 30 E intersect with each other.
  • the front end of the girder member 54 L is connected to the upper end of the pillar member 42 L.
  • the girder member 54 L and the pillar member 42 L are made of an integral frame member.
  • the rear end of the girder member 54 L is connected to the upper end of the pillar member 43 L.
  • the girder members 54 R are disposed at a corner where the right side face 30 C and the top face 30 E intersect with each other.
  • the rear end of the girder member 54 R is connected to the upper end of the pillar member 43 R.
  • the girder members 55 L and 55 R are spaced from each other in the leftward and rightward direction.
  • the girder members 55 L and 55 R are disposed at positions opposed to each other in the leftward and rightward direction.
  • the girder member 55 L is disposed at a corner where the left side face 30 D and the top face 30 E intersect with each other.
  • the front end of the girder member 55 L is connected to the upper end of the pillar member 43 L.
  • the rear end of the girder member 55 L is connected to the upper end of the pillar member 44 L.
  • the girder member 55 R is disposed at a corner where the right side face 30 C and the top face 30 E intersect with each other.
  • the front end of the girder member 55 R is connected to the upper end of the pillar member 43 R.
  • the rear end of the girder member 55 L is connected to the upper end of the pillar member 44 R.
  • the cab 30 further includes a bracket 41 .
  • the bracket 41 is configured to connect a joint between the beam member 51 and the girder member 54 R to the right front end of the floor member 40 .
  • the bracket 41 is disposed to replace a frame member that would be otherwise disposed in pair with the pillar member 42 L. In comparison with the case where the frame members are welded to each other so as to form the cab frame, the bracket 41 may be attached to or detached from the cab frame by bolts or the like.
  • the cab 30 further includes a roof member 45 and a door member 32 .
  • the roof member 45 is disposed on the top face 30 E.
  • the roof member 45 is made of a plate material (for example, a steel plate).
  • the roof member 45 is disposed on the beam members 51 , 52 and 53 , the girder member 54 , and the girder member 55 .
  • the door member 32 is disposed on the left side face 30 D and may be opened or closed.
  • the door member 32 is opened or closed when the operator gets into or out of the living space 120 .
  • the cab 30 further includes a front transparent member 46 and a lateral transparent member 48 .
  • the front transparent member 46 and the lateral transparent member 48 may be made of a transparent material through which light can pass.
  • the front transparent member 46 and the lateral transparent member 48 may be made of, for example, glass or acrylic.
  • the front transparent member 46 is disposed on the front face 30 A.
  • the front transparent member 46 is disposed between the pillar member 42 L and the bracket 41 in the leftward and rightward direction.
  • the front transparent member 46 is disposed in front of the pillar member 43 .
  • the front transparent member 46 is disposed in front of the operator's seat 31 .
  • the lateral transparent member 48 is disposed on the right side face 30 C.
  • the lateral transparent member 48 is disposed across the bracket 41 , the pillar member 43 R and the pillar member 44 R in the forward and rearward direction.
  • the lateral transparent member 48 may be disposed only between the bracket 41 and the pillar member 43 R in the forward and rearward direction.
  • the front transparent member 46 includes an upper transparent member 46 P and a lower transparent member 46 Q.
  • the upper transparent member 46 P is disposed above the lower transparent member 46 Q.
  • the lower transparent member 46 Q and the lateral transparent member 48 are fixed to the cab, while the upper transparent member 46 P is movable, i.e., openable and closable.
  • the upper transparent member 46 P may be moved to a position to open the front face 30 A or to a position to close the front face 30 A.
  • the upper transparent member 46 P is moved toward the top face 30 E.
  • the bracket 41 is disposed at a position in the diagonally right forward direction of the operator to replace the frame member that would be otherwise disposed in pair with the pillar member 42 L. Since the bracket 41 is not a member that ensures strength like a frame member constituting the cab frame, the bracket 41 may be made thinner, which makes it possible to further improve the field of view of the operator in the diagonally right forward direction.
  • the bracket 41 may not be disposed at a position in the diagonally right forward direction of the operator, and the front transparent member and the lateral transparent member may be fixed in such a manner that they are joined to each other by abutting against each other.
  • FIG. 4 is a perspective view illustrating the inside of the cab of FIG. 1 .
  • the operator's seat 31 includes a seat cushion 37 , a seatback 36 , and a headrest 38 .
  • the seat cushion 37 is disposed parallel to the floor member 40 .
  • the seat cushion 37 is a member on which the operator is seated.
  • the seatback 36 is disposed so as to rise upward from the rear end of the seat cushion 37 .
  • the seatback 36 is a member for supporting the back of the operator.
  • the headrest 38 is disposed at the upper end of the seatback 36 .
  • the headrest 38 is a member for supporting the head of the operator.
  • the cab 30 further includes a suspension mechanism 39 .
  • the suspension mechanism 39 is disposed below the operator's seat 31 (the seat cushion 37 ).
  • the operator's seat 31 is attached on the floor member 40 via the suspension mechanism 39 .
  • the suspension mechanism 39 elastically supports the operator's seat 31 .
  • the cab 30 further includes a pair of left and right consoles 61 ( 61 L, 61 R) and a pair of left and right armrests 56 ( 56 L, 56 R).
  • the pair of consoles 61 are disposed on both sides of the operator's seat 31 .
  • the console 61 L is disposed on the left side of the operator's seat 31 .
  • the console 61 R is disposed on the right side of the operator's seat 31 .
  • the pair of armrests 56 are disposed on both sides of the operator's seat 31 .
  • the pair of armrests 56 are disposed above the pair of consoles 61 , respectively.
  • the armrest 56 L is disposed on the left side of the operator's seat 31 .
  • the armrest 56 R is disposed on the right side of the operator's seat 31 .
  • the pair of armrests 56 are used by the operator seated on the operator's seat 31 to rest his/her arms.
  • the cab 30 further includes a control lever 71 and a control lever 76 .
  • the control lever 71 and the control lever 76 are operated by an operator to control the work implement 12 illustrated in FIG. 1 .
  • the control lever 71 and the control lever 76 are disposed on both sides of the operator's seat 31 .
  • the control lever 71 is disposed on the right side of the operator's seat 31 .
  • the control lever 71 is disposed in the console 61 R.
  • the control lever 71 is disposed in front of the armrest 56 R.
  • the control lever 71 projects upward from the console 61 R.
  • the control lever 71 is disposed closer to the front end of the console 61 R than to the rear end of the console 61 R.
  • the control lever 71 is disposed in front of the seatback 36 .
  • the control lever 71 is disposed above the seat cushion 37 .
  • the control lever 76 is disposed on the left side of the operator's seat 31 .
  • the control lever 76 is disposed in the console 61 L.
  • the control lever 76 and the control lever 71 are symmetrical in the leftward and rightward direction.
  • the cab 30 further includes a monitor 81 and an operation unit 80 .
  • the monitor 81 displays various kinds of information related to the operation of the hydraulic excavator 100 .
  • the monitor 81 displays various indications such as an engine water temperature, an operation mode, a travel speed, and a fuel indicator reading.
  • the monitor 81 is a touch panel monitor.
  • the monitor 81 displays various operation switches such as an operation mode selection switch, a travel speed selection switch, a windshield wiper switch, and a screen selection switch.
  • the monitor 81 may be configured to display an image of the periphery of the hydraulic excavator 100 captured by a camera.
  • the monitor 81 may be configured to display the current position of the hydraulic excavator 100 , the position of teeth of the bucket, the excavation/design data, and the like received from the outside.
  • the operation unit 80 includes various switches and dials for controlling the hydraulic excavator 100 .
  • FIG. 5 is a top view illustrating an operator's seat inside the cab of FIG. 1 and components on the right side of the operator's seat
  • FIG. 6 is a front view illustrating an operator's seat inside the cab of FIG. 1 and components on the right side of the operator's seat
  • FIG. 7 is a side view illustrating the inside of the cab in the arrow direction of line VII-VII in FIG. 6 .
  • the monitor 81 and the operation unit 80 are disposed in the console 61 R.
  • the cab 30 further includes a bracket 62 .
  • the bracket 62 is attached to the console 61 R.
  • the monitor 81 and the operation unit 80 are supported by the bracket 62 .
  • the monitor 81 and the operation unit 80 are attached to the console 61 R through the intermediary of the bracket 62 .
  • the console 61 R receives the weight of the monitor 81 and the operation unit 80 through the intermediary of the bracket 62 .
  • the control lever 71 and the monitor 81 are disposed in this order from the operator's seat 31 toward the outside.
  • the control lever 71 and the monitor 81 are disposed in this order from the operator's seat 31 toward the outside away from the operator's seat 31 .
  • the monitor 81 is disposed on the opposite side of the operator's seat 31 with respect to the control lever 71 , and is disposed side by side with the control lever 71 .
  • the monitor 81 is disposed between the right side face 30 C (the lateral transparent member 48 ) and the control lever 71 in the leftward and rightward direction.
  • the monitor 81 is disposed between the right side face 30 C (the lateral transparent member 48 ) and the console 61 R in the leftward and rightward direction.
  • the monitor 81 is disposed between the right side face 30 C (the lateral transparent member 48 ) and the armrest 56 R in the leftward and rightward direction.
  • the number 101 denotes a center position of the operator's seat 31 in the leftward and rightward direction
  • the number 102 denotes a center position of the cab 30 in the leftward and rightward direction are shown.
  • the distance from the center position 101 of the operator's seat 31 to the monitor 81 is larger than the distance from the center position 101 of the operator's seat 31 to the control lever 71 .
  • the distance from the center position 102 of the cab 30 to the monitor 81 is larger than the distance from the center position 102 of the cab 30 to the control lever 71 .
  • a gap is disposed between the right side face 30 C (the lateral transparent member 48 ) and the monitor 81 .
  • the monitor 81 is separated from the right side face 30 C.
  • the monitor 81 and the control lever 71 are disposed side by side in the leftward and rightward direction.
  • the shortest distance between the monitor 81 and the control lever 71 is preferably 300 mm or less, and more preferably 150 mm or less.
  • the monitor 81 is disposed in front of the pillar member 43 R.
  • the monitor 81 is disposed in front of the armrest 56 R.
  • the monitor 81 is disposed in front of the seatback 36 and the headrest 38 .
  • the monitor 81 is disposed behind the bracket 41 and the pillar member 42 L.
  • the intersection between the front face 30 A and the right side face 30 C forms a corner T.
  • a center position S of a headrest front face 38 a of the headrest 38 in the leftward and rightward direction and the corner T define a straight line 103 .
  • the monitor 81 is disposed at a position shifted from the straight line 103 .
  • the monitor 81 is disposed in a region of the cab 30 located rightward and rearward of the straight line 103 .
  • the monitor 81 is disposed in a region of the cab 30 sandwiched between the straight line 103 and the right side face 30 C.
  • the operation unit 80 is disposed between the right side face 30 C (the lateral transparent member 48 ) and the console 61 R in the leftward and rightward direction.
  • the operation portion 80 is disposed between the right side face 30 C (the lateral transparent member 48 ) and the armrest 56 R in the leftward and rightward direction.
  • the operation unit 80 is disposed behind the monitor 81 .
  • the monitor 81 overlaps with the pillar member 43 R. In the front view illustrated in FIG. 6 , a part of the monitor 81 overlaps with the pillar member 43 R.
  • FIG. 8 is an enlarged top view illustrating a control lever and a monitor in FIG. 5
  • FIG. 9 is an enlarged front view illustrating a control lever and a monitor in FIG. 6
  • FIG. 10 is an enlarged side view illustrating a control lever and a monitor in FIG. 7 .
  • control lever 71 is formed as a cylindrical grip to be gripped by the operator.
  • the control lever 71 is not limited to a cylindrical shape, and may have, for example, an arched shape.
  • the control lever 71 may be tilted in the leftward and rightward direction.
  • the control lever 71 may be tilted between a neutral position ( 71 A: a position indicated by the control lever 71 A) and a right position ( 71 B: a position indicated by the control lever 71 B) shifted from the neutral position ( 71 A) in the rightward direction (in the direction away from the operator's seat 31 ).
  • the control lever 71 is may be tilted between the neutral position ( 71 A) and a left position ( 71 C: a position indicated by the control lever 71 C) shifted from the neutral position ( 71 A) in the leftward direction (in the direction toward the operator's seat 31 ).
  • the operator seated on the operator's seat 31 tilts the control lever 71 to the right position ( 71 B) or to the left position ( 71 C) so as to control the work implement 12 (for example, to excavate with or to dump the bucket 18 illustrated in FIG. 1 ).
  • the control lever 71 may be tilted in the forward and rearward direction.
  • the control lever 71 may be tilted between the neutral position ( 71 A) and a front position ( 71 D: a position indicated by the control lever 71 D) shifted from the neutral position ( 71 A) in the forward direction.
  • the control lever 71 may be tilted between the neutral position ( 71 A)and a rear position ( 71 E: a position indicated by the control lever 71 E) shifted from the neutral position ( 71 A) in the rearward direction.
  • the operator seated on the operator's seat 31 tilts the control lever 71 to the front position ( 71 D) or to the rear position ( 71 D) so as to control the work implement 12 (for example, to lift or lower the boom 16 illustrated in FIG. 1 ).
  • the control lever 71 may be automatically returned to the neutral position ( 71 A) from the right position ( 71 B), the left position ( 71 C), the front position ( 71 D), and the rear position ( 71 D) by an elastic force applied from a spring member (not shown), for example.
  • a spring member not shown
  • control lever 71 positioned at the neutral position ( 71 A), the control lever 71 positioned at the right position ( 71 B), the control lever 71 positioned at the left position ( 71 C), the control lever 71 positioned at the front position ( 71 D), and the control lever 71 positioned at the rear position ( 71 E) are also referred to as a control lever 71 ( 71 A), a control lever 71 ( 71 B), a control lever 71 ( 71 C), a control lever 71 ( 71 D), and a control lever 71 ( 71 E), respectively.
  • the monitor 81 is formed as a thin plate having a rectangular parallelepiped shape.
  • the monitor 81 has a display screen 82 .
  • the display screen 82 may be a liquid crystal screen, for example.
  • the display screen 82 is a plan surface orthogonal to the thickness direction of the monitor 81 .
  • the display screen 82 has a rectangular shape.
  • the control lever 71 ( 71 A) is disposed in a first front-rear region 220 in the forward and rearward direction.
  • the first front-rear region 220 corresponds to a range from a front end 72 to a rear end 73 of the control lever 71 ( 71 A) in the forward and rearward direction.
  • the monitor 81 is disposed in a second front-rear region 210 in the forward and rearward direction.
  • the second front-rear region 210 corresponds to a range from a front end 87 to a rear end 88 of the monitor 81 in the forward and rearward direction.
  • At least a part of the first front-rear region 220 and at least a part of the second front-rear region 210 overlap with each other.
  • a part of the first front-rear region 220 and a part of the second front-rear region 210 overlap with each other.
  • the front end 87 of the monitor 81 is located in front of the front end 72 of the control lever 71 ( 71 A).
  • the rear end 88 of the monitor 81 is located behind the front end 72 of the control lever 71 ( 71 A), and is located in front of the rear end 88 of the control lever 71 ( 71 A).
  • the second front-rear region 210 in which the monitor 81 is disposed is not limited to being shifted forward from the first front-rear region 220 in which the control lever 71 ( 71 A) is disposed, the second front-rear region 210 in which the monitor 81 is disposed may be shifted rearward from the first front-rear region 220 in which the control lever 71 ( 71 A) is disposed.
  • the entire part of the first front-rear region 220 and a part of the second front-rear region 210 may overlap with each other (in other words, the second front-rear region 210 is included in the first front-rear region 220 ), or a part of the first front-rear region 220 and the entire part of the second front-rear region 210 may overlap with each other (in other words, the first front-rear region 220 is included in the second front-rear region 210 ), or the entire part of the first front-rear region 220 and the entire part of the second front-rear region 210 may overlap with each other (in other words, the first front-rear region 220 and the second front-rear region 210 completely overlap with each other).
  • the control lever 71 operates in a third front-rear region 230 in the forward and rearward direction.
  • the third front-rear region 230 corresponds to a range from the front end 72 of the control lever 71 ( 71 D) to the rear end 73 of the control lever 71 ( 71 E) in the forward and rearward direction.
  • At least a part of the third front-rear region 230 and at least a part of the second front-rear region 210 overlap with each other.
  • the relationship between the third front-rear region 230 and the second front-rear region 210 is the same as the relationship between the first front-rear region 220 and the second front-rear region 210 as described above.
  • the control lever 71 ( 71 A) is disposed in a first height region 250 in the upward and downward direction.
  • the first height region 250 corresponds to a range from the upper end 74 to the lower end 75 of the control lever 71 ( 71 A) in the upward and downward direction.
  • the monitor 81 is disposed in a second height region 240 in the upward and downward direction.
  • the second height region 240 corresponds to a range from the upper end 85 to the lower end 86 of the monitor 81 in the upward and downward direction.
  • the upper end 85 of the monitor 81 is lower than the upper end 74 of the control lever 71 ( 71 A) but higher than the lower end 75 of the control lever 71 ( 71 A).
  • the lower end 86 of the monitor 81 is lower than the lower end 75 of the control lever 71 ( 71 A).
  • the second height region 240 in which the monitor 81 is disposed is not limited to being shifted downward to the first height region 250 in which the control lever 71 ( 71 A) is disposed, the second height region 240 in which the monitor 81 is disposed may be shifted upward to the first height region 250 in which the control lever 71 ( 71 A) is disposed.
  • the entire part of the first height region 250 and a part of the second height region 240 may overlap with each other (in other words, the second height region 240 is included in the first height region 250 ), or a part of the first height region 250 and the entire part of the second height region 240 may overlap with each other (in other words, the first height region 250 is included in the second height region 240 ), or the entire part of the first height region 250 and the entire part of the second height region 240 may overlap with each other (in other words, the first height region 250 and the second height region 240 completely overlap with each other).
  • the control lever 71 operates in a third height region 260 in the upward and downward direction.
  • the third height region 260 corresponds to a range from the upper end 74 of the control lever 71 ( 71 E) to the lower end 75 of the control lever 71 ( 71 C) in the upward and downward direction.
  • At least a part of the third height region 260 and at least a part of the second height region 240 overlap with each other.
  • the relationship between the third height region 260 and the second height region 240 is the same as relationship between the first height region 250 and the second height region 240 as described above.
  • the display screen 82 is disposed in a forward inclined posture in which the upper end 83 of the display screen 82 is located in front of the lower end 84 of the display screen 82 in the upward and downward direction.
  • the control lever 71 ( 71 A) is disposed in a forward inclined posture in which the upper end 74 of the control lever 71 ( 71 A) is located in front of the lower end 75 of the control lever 71 ( 71 A).
  • the angle at which the display screen 82 is inclined forward with respect to the vertical direction is larger than the angle at which the control lever 71 ( 71 A) is inclined forward with respect to the vertical direction.
  • the angle at which the display screen 82 is inclined forward with respect to the vertical direction may be equal to or less than the angle at which the control lever 71 ( 71 A) is inclined forward with respect to the vertical direction.
  • the display screen 82 is inclined with respect to the leftward and rightward direction so as to face the operator's seat 31 in a top view.
  • the upper end 83 of the display screen 82 is located in front of the control lever 71 ( 71 A).
  • FIG. 11 is a perspective view illustrating the inside of the cab of FIG. 1 .
  • FIG. 11 illustrates a field of view of the operator seated on the operator's seat 31 in the diagonally right forward direction.
  • the front transparent member 46 and the fixed lateral transparent member 48 are fixed in such a manner that they are joined to each other by abutting against each other.
  • the monitor 81 is disposed in the console 61 R in which a control lever 71 is disposed.
  • the control lever 71 and the monitor 81 are disposed in this order from the operator's seat 31 toward the outside.
  • the monitor 81 since the monitor 81 is disposed in a range reachable by the operator seated on the operator's seat 31 , the operator may have a clear view of the monitor 81 .
  • the monitor 81 is a touch panel, the operator may easily operate the monitor 81 . Further, since the position where the monitor 81 is disposed is shifted from the position facing the operator in the forward and rearward direction, it is possible to prevent the movement of the operator to sit into or leave the operator's seat 31 from being hindered by the monitor 81 .
  • the monitor 81 is disposed between the right side face 30 C (the lateral transparent member 48 ) and the control lever 71 .
  • the operator may have the monitor 81 in sight without greatly moving his/her visual line.
  • the operator may have a clear view of the monitor 81 , or may have the monitor 81 in sight while having the work implement 12 in the field of view.
  • the visual line of the operator facing forward is prevented from being blocked by the monitor 81 , which makes it possible to improve the field of view of the operator in the forward direction.
  • the bracket 41 is disposed at a position in the diagonally right forward direction of the operator instead of a frame member, and the front transparent member 46 and the lateral transparent member 48 are supported by the bracket 41 or the front transparent member 46 and the lateral transparent member 48 are joined to each other by abutting against each other, it is possible to improve the field of view of the operator in the diagonally right forward direction. Therefore, when the operator monitors the operation of the work implement 12 through the front transparent member 46 and the lateral transparent member 48 , it is possible to significantly improve the visibility of the work implement 12 .
  • the visual line of the operator facing the monitor 81 is prevented from being blocked by the control lever 71 ( 71 A) or the console 61 R. Therefore, the operator may have a further clear view of the monitor 81 . Further, when the monitor 81 is a touch panel, the operator may move his/her hands from the control lever 71 to reach the monitor 81 without great movements, which makes it possible to improve the operability of the monitor 81 .
  • the display screen 82 is disposed in a forward inclined posture in which the upper end 83 of the display screen 82 is located in front of the lower end 84 of the display screen 82 in the upward and downward direction.
  • the display screen 82 faces the operator seated on the operator's seat 31 in the forward and rearward direction, and thereby the operator may have a further clear view of the monitor 81 .
  • the display screen 82 is inclined with respect to the leftward and rightward direction so as to face the operator's seat 31 in a top view.
  • the display screen 82 faces the operator seated on the operator's seat 31 in the leftward and rightward direction, whereby the operator may have a further clear view of the monitor 81 .
  • the upper end 83 of the display screen 82 is disposed in front of the control lever 71 ( 71 A).
  • the operator since the display screen 82 is disposed in front of the control lever 71 ( 71 A), the operator may have the display screen 82 in sight without greatly moving his/her visual line when the operator is looking forward. Thus, the operator may have a further clear view of the monitor 81 .
  • the monitor 81 overlaps with the pillar member 43 R. According to such a configuration, the monitor 81 may be disposed in a free space before or behind the pillar member 43 R. Further, since the monitor 81 is disposed closer to the right side face 30 C, it is possible to increase the screen size of the monitor 81 in a limited space between the right side face 30 C and the operator's seat 31 .
  • FIGS. 12 to 14 are perspective views illustrating a structure for attaching the monitor to the console.
  • the console 61 R includes a main body 63 , an armrest attaching member 64 , and a control lever attaching member 65 .
  • the main body 63 is disposed on the right side of the operator's seat 31 (the seat cushion 37 ) illustrated in FIG. 4 .
  • the main body 63 as a whole has an elongated shape, the length direction of which is in the forward and rearward direction and the width direction thereof is in the leftward and rightward direction.
  • the main body 63 is made of a plate material.
  • the main body 63 includes an inner plate 63 J and an outer plate 63 K.
  • the inner plate 63 J and the outer plate 63 K face each other with a gap therebetween in the leftward and rightward direction.
  • the inner plate 63 J faces the operator's seat 31 (the seat cushion 37 ) in the leftward and rightward direction.
  • the outer plate 63 K and the operator's seat 31 (the seat cushion 37 ) are disposed on opposite sides of the inner plate 63 J.
  • the armrest 56 R is attached to the armrest attaching member 64 .
  • the armrest attaching member 64 is disposed at the rear end of the main body 63 .
  • the armrest attaching member 64 has a cylindrical shape projecting upward from the main body 63 .
  • the armrest 56 R is provided with a pole member 57 .
  • the pole member 57 extends in the upward and downward direction. The pole member 57 is inserted into the armrest attaching member 64 .
  • the height of the armrest 56 R may be adjusted by sliding the pole member 57 in the upward and downward direction with respect to the armrest attaching member 64 .
  • the control lever 71 is attached to the control lever attaching member 65 .
  • the control lever attaching member 65 is disposed at the upper end of the main body 63 .
  • the control lever attaching member 65 is disposed closer to the front end of the main body 63 .
  • the control lever attaching member 65 has a plate shape, and is disposed across the inner plate 63 J and the outer plate 63 K.
  • the bracket 62 includes a flange member 66 , an extension member 67 , and a projection member 68 .
  • the flange member 66 has a plate shape orthogonal to the leftward and rightward direction.
  • the flange member 66 is connected to the main body 63 .
  • the flange member 66 is connected to the outer plate 63 K.
  • the projection member 68 projects rightward from the upper end of the flange member 66 .
  • the projection member 68 is inclined upward as the distance from the projection member 68 increases in the leftward and rightward direction.
  • the operation unit 80 is attached to the projection member 68 .
  • the extension member 67 extends forward and diagonally upward from the front end of the projection member 68 .
  • the extension member 67 is inclined upward as the distance from the projection member 68 increases in the leftward and rightward direction.
  • the monitor 81 is attached to the extension member 67 .
  • the display screen 82 of the monitor 81 is disposed parallel to the extension member 67 .
  • the bracket 62 is provided with a position adjusting mechanism 91 .
  • the position adjusting mechanism 91 is disposed in the extension member 67 .
  • the position adjusting mechanism 91 moves the monitor 81 in a direction parallel to the display screen 82 .
  • the position adjusting mechanism 91 moves the monitor 81 in both the forward and rearward direction and the upward and downward direction.
  • the extension member 67 is provided with a plurality of attaching holes 92 .
  • the attaching hole 92 is an elongated hole which extends in the extending direction of the extension member 67 .
  • the monitor 81 is fastened to the extension member 67 by bolts 93 inserted into the attaching holes 92 .
  • the position of the monitor 81 may be adjusted by sliding the monitor 81 along the longitudinal direction of the elongated hole, i.e., the attaching hole 92 .
  • the position of the display screen 82 may be adjusted in accordance with the position of the operator's eyes seated on the operator's seat 31 .
  • the operator may have a further clear view of the monitor 81 .
  • the position of the monitor 81 is adjusted to the lower and rear slide end.
  • FIG. 15 is a top view illustrating the inside of the cab when the monitor is adjusted to the upper and front slide end
  • FIG. 16 is a front view illustrating the inside of the cab when the monitor is adjusted to the upper and front slide end
  • FIG. 17 is a side view illustrating the inside of the cab when the monitor is adjusted to the upper and front slide end.
  • the cab 30 includes an operator's seat 31 , a console 61 R, a control lever 71 , and a monitor 81 as a display unit.
  • the console 61 R is disposed on one side of the operator's seat 31 .
  • the control lever 71 is disposed in the console 61 R.
  • the control lever 71 is operated to control the work implement 12 .
  • the monitor 81 is disposed in the console 61 R. In a top view, the control lever 71 and the monitor 81 are disposed in this order from the operator's seat 31 toward the outside.
  • the monitor 81 is disposed in a range reachable by the operator seated on the operator's seat 31 , it is possible for the operator to have an improved visibility of the monitor 81 .
  • the control lever 71 ( 71 A) is disposed in the first height region 250 in the upward and downward direction.
  • the monitor 81 is disposed in the second height region 240 in the upward and downward direction. At least a part of the first height region 250 and at least a part of the second height region 240 overlap with each other.
  • the monitor 81 has a display screen 82 .
  • the display screen 82 is disposed in a forward inclined posture in which the upper end 83 of the display screen 82 is located in front of the lower end 84 of the display screen 82 in the upward and downward direction.
  • the display screen 82 is inclined with respect to the leftward and rightward direction so as to face the operator's seat 31 in a top view.
  • the display screen 82 faces the operator seated on the operator's seat 31 in both the forward and rearward direction and the leftward and rightward direction, it is possible for the operator to have a further improved visibility of the monitor 81 .
  • the upper end 83 of the display screen 82 is disposed in front of the control lever 71 ( 71 A).
  • the operator since the display screen 82 is disposed in front of the control lever 71 ( 71 A), the operator may have the display screen 82 in sight without greatly moving his/her visual line when the operator is looking forward. Thus, it is possible for the operator to have a further improved visibility of the monitor 81 .
  • the cab 30 further includes a bracket 62 .
  • the bracket 62 is attached to the console 61 R.
  • the bracket 62 supports the monitor 81 .
  • the bracket 62 is provided with a position adjusting mechanism 91 configured to move the monitor 81 in a direction parallel to the display screen 82 .
  • the position of the display screen 82 may be adjusted in accordance with the position of the operator's eyes seated on the operator's seat 31 .
  • the operator it is possible for the operator to have a further improved visibility of the monitor 81 .
  • the monitor 81 is a touch panel monitor. According to such a configuration, since the monitor 81 is disposed in a range reachable by the operator seated on the operator's seat 31 , it is possible for the operator to easily operate the monitor 81 .
  • the hydraulic excavator 100 includes a cab 30 and a work implement 12 .
  • the work implement 12 is controlled by the control lever 71 .
  • the cab 30 is a box body having a front face 30 A and a side face such as a right side face 30 C.
  • the front face 30 A is disposed to face the forward direction.
  • the right side face 30 C faces the work implement 12 in the leftward and rightward direction.
  • the front face 30 A and the right side face 30 C form a corner.
  • the monitor 81 is disposed between the right side face 30 C and the control lever 71 .
  • the operator when the operator is controlling the work implement 12 to work through the front face 30 A and the right side face 30 C, the operator may have the monitor 81 in sight without greatly moving his/her visual line, which makes it possible for the operator to easily operate the hydraulic excavator 100 .
  • the cab 30 further includes a pillar member 43 R.
  • the pillar member 43 R extends in the upward and downward direction.
  • the pillar member 43 R is disposed between the right side face 30 C and the operator's seat 31 .
  • at least a part of the monitor 81 overlaps with the pillar member 43 R.
  • the monitor 81 may be disposed in a free space before or behind the pillar member 43 R.
  • the monitor 81 and the control lever 71 are disposed side by side in the leftward and rightward direction in the top view, but the present disclosure is not limited thereto.
  • the monitor 81 may be disposed at a position in the diagonally right forward direction of the control lever 71 , or may be disposed at a position in the diagonally right rearward direction of the control lever 71 .
  • the monitor 81 may be disposed directly on the console 61 R without the bracket 62 .
  • the cab in the present disclosure is not limited to a cab of a hydraulic excavator, it may be applied to any work vehicle such as a crane, a wheel loader, or a motor grader.

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  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Component Parts Of Construction Machinery (AREA)
  • Fittings On The Vehicle Exterior For Carrying Loads, And Devices For Holding Or Mounting Articles (AREA)
US17/612,754 2019-07-10 2020-07-09 Cab and work vehicle Pending US20220316177A1 (en)

Applications Claiming Priority (3)

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JP2019-128550 2019-07-10
JP2019128550A JP7473305B2 (ja) 2019-07-10 2019-07-10 キャブおよび作業車両
PCT/JP2020/026777 WO2021006308A1 (ja) 2019-07-10 2020-07-09 キャブおよび作業車両

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US17/612,754 Pending US20220316177A1 (en) 2019-07-10 2020-07-09 Cab and work vehicle

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US (1) US20220316177A1 (ja)
JP (2) JP7473305B2 (ja)
KR (1) KR102641400B1 (ja)
CN (1) CN113994050A (ja)
DE (1) DE112020001919T5 (ja)
WO (1) WO2021006308A1 (ja)

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KR20230040483A (ko) * 2021-09-16 2023-03-23 볼보 컨스트럭션 이큅먼트 에이비 건설기계 및 그 조립방법
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Publication number Priority date Publication date Assignee Title
US20210178982A1 (en) * 2018-07-19 2021-06-17 Clark Equipment Company Display position for cab with overhead door
US11801794B2 (en) * 2018-07-19 2023-10-31 Clark Equipment Company Display position for cab with overhead door

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KR20220002642A (ko) 2022-01-06
JP7473305B2 (ja) 2024-04-23
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KR102641400B1 (ko) 2024-02-27
WO2021006308A1 (ja) 2021-01-14
JP2023113762A (ja) 2023-08-16
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