WO2021205781A1 - Cabine de véhicule de travail, véhicule de travail et bouteur - Google Patents

Cabine de véhicule de travail, véhicule de travail et bouteur Download PDF

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Publication number
WO2021205781A1
WO2021205781A1 PCT/JP2021/008038 JP2021008038W WO2021205781A1 WO 2021205781 A1 WO2021205781 A1 WO 2021205781A1 JP 2021008038 W JP2021008038 W JP 2021008038W WO 2021205781 A1 WO2021205781 A1 WO 2021205781A1
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WIPO (PCT)
Prior art keywords
cab
work vehicle
window
pillar
pair
Prior art date
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PCT/JP2021/008038
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English (en)
Japanese (ja)
Inventor
修 矢津田
慎一 大▲高▼
正道 宮崎
裕史 小瀧
Original Assignee
株式会社小松製作所
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Application filed by 株式会社小松製作所 filed Critical 株式会社小松製作所
Publication of WO2021205781A1 publication Critical patent/WO2021205781A1/fr

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D33/00—Superstructures for load-carrying vehicles
    • B62D33/06—Drivers' cabs
    • 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

Definitions

  • This disclosure relates to work vehicle cabs, work vehicles and bulldozers.
  • Patent Document 1 An example of a bulldozer having a cab is disclosed in US Patent Application Publication No. 2018/0038073 (Patent Document 1).
  • This Patent Document 1 shows a cab in which an operator can sit inside.
  • An object of the present disclosure is to provide a work vehicle cab, a work vehicle and a bulldozer that can improve the visibility of an operator seated in the cab.
  • the work vehicle cab of the present disclosure is a work vehicle cab having an internal space, and includes a pair of rearmost pillars and a rear window. Each of the pair of rearmost pillars is tilted rearward from bottom to top in lateral view. The rear window projects rearward from each of the pair of rearmost pillars so that the outside of the cab can be seen from the internal space.
  • the work vehicle of the present disclosure is provided with a traveling device, a cab, and a driver's seat.
  • the cab has a rearmost pillar that inclines so that it is located rearward from the bottom to the top in side view.
  • the driver's seat is located inside the cab and has a seating surface. In a plan view, the lower end of the rearmost end pillar is arranged in front of the straight line connecting either the right rear end or the left rear end on the seat surface of the driver's seat and the outside of the rear end of the traveling device.
  • FIG. 2 It is a side view which shows the structure of the bulldozer as an example of the work vehicle in one Embodiment. It is a side view (A) and a rear view (B) which show the structure of the cab of the work vehicle shown in FIG. 2 is a schematic cross-sectional view of the cab along lines III-III of FIG. 2 (A). It is a perspective view which shows the structure of a part of the body frame in the work vehicle shown in FIG. It is a side view which shows the structure of the body frame and the cab in the work vehicle shown in FIG. It is a rear view which shows the structure of the body frame and the cab in the work vehicle shown in FIG. It is a schematic cross-sectional view corresponding to the line III-III of FIG.
  • the front-rear direction means the front-rear direction of the operator seated in the driver's seat 11.
  • the left-right direction (width direction) means the left-right direction of the operator seated in the driver's seat 11.
  • the vertical direction means the vertical direction of the operator seated in the driver's seat 11.
  • the direction facing the operator seated in the driver's seat 11 is the front direction, and the direction facing the front direction is the rear direction.
  • the right side and the left side are the right direction and the left direction, respectively.
  • the foot side of the operator seated in the driver's seat 11 is the lower side, and the upper side of the head is the upper side.
  • a bulldozer ⁇ Composition of work vehicle>
  • the work vehicle of the present disclosure is not limited to a bulldozer, and can be applied to any work vehicle having a cab such as a hydraulic excavator, a wheel loader, or a motor grader.
  • FIG. 1 is a schematic side view showing a configuration of a bulldozer as an example of a work vehicle in one embodiment.
  • the bulldozer as the work vehicle 20 of the present embodiment mainly includes a vehicle body 21, a work machine 22, a track-type traveling device 23, and a ripper device 24.
  • the work vehicle main body is composed of the vehicle body 21 and the work machine 22.
  • the track-type traveling device 23 has a pair of left and right track devices separated in the vehicle width direction.
  • the vehicle body 21 is arranged between a pair of left and right track devices.
  • the work vehicle main body composed of the vehicle body 21 and the work machine 22 is supported by a track-type traveling device 23 so as to be able to travel.
  • the work machine 22 is arranged in front of the vehicle body 21.
  • the working machine 22 mainly includes a blade 22a (working tool), a frame 22b, a tilt cylinder 22c, and an elevating cylinder 22d.
  • the blade 22a is arranged in front of the vehicle body 21.
  • the blade 22a rotates in the tilt direction about the support portion by the frame 22b due to the expansion and contraction of the tilt cylinder 22c.
  • the blade 22a moves in the vertical direction around the support portion of the frame 22b to the vehicle body 21 due to the expansion and contraction of the elevating cylinder 22d.
  • the ripper device 24 is arranged behind the vehicle body 21.
  • the ripper device 24 is a working machine for penetrating and crushing a hard material such as rock.
  • the ripper device 24 has a claw 24a for crushing a bedrock or the like.
  • the vehicle body 21 has a cab (driver's cab) 1, a vehicle body frame 21a, an engine chamber 21b, and a storage portion 21c.
  • the cab 1 is arranged at the rear upper part of the vehicle body 21.
  • the vehicle body frame 21a is arranged below the cab 1 and supports the cab 1.
  • the engine chamber 21b is arranged in front of the cab 1.
  • An engine (not shown) is housed in the engine chamber 21b.
  • the storage portion 21c is located on the side of the cab 1 and above the vehicle body frame 21a.
  • a hydraulic oil tank, a urea water tank, a battery, and the like are housed in the storage portion 21c.
  • the cab 1 has an internal space 1A.
  • a driver's seat 11 for an operator to sit in is arranged in the internal space of the cab 1.
  • the cab 1 is configured to surround the driver's seat 11.
  • FIG. 2 is a side view (A) and a rear view (B) showing the configuration of the cab of the work vehicle shown in FIG.
  • FIG. 3 is a schematic cross-sectional view of the cab along lines III-III of FIG. 2 (A).
  • FIG. 11 is a plan view for explaining the position of the lower end of the rear pillar in a plan view.
  • the cab 1 of the present embodiment includes a floor plate 2a, a support plate 2b, a side plate 2c, a plurality of pillars 3a, 3b, 3c, a beam member 4, and a plurality of cabs 1. It has windows 5 to 8 and a roof portion 9.
  • the floor plate 2a is arranged at the bottom of the cab 1.
  • the floor plate 2a has a front portion 2aa and a rear portion 2ab. In the front-rear direction of the work vehicle 20, the front portion 2aa is located in the front and the rear portion 2ab is located behind the front portion 2aa.
  • the rear 2ab is connected to the rear end of the front 2aa.
  • the side plate 2c rises upward from the rear portion 2ab of the floor plate 2a.
  • the side plate 2c is connected to the edge (side edge, rear edge) of the rear portion 2ab of the floor plate 2a.
  • the support plate 2b is connected to the upper end of the side plate 2c.
  • the support plate 2b extends in the left-right direction from the upper end of the side plate 2c.
  • the floor plate 2a, the support plate 2b, and the side plate 2c may be configured by bending one plate (for example, a steel plate). Further, the side plate 2c may be connected to the floor plate 2a by welding or the like, and the support plate 2b may be connected to the side plate 2c by welding or the like.
  • the plurality of pillars 3a, 3b, and 3c include a pair of left and right front pillars 3a, a pair of left and right center pillars 3b, and a pair of left and right rear pillars 3c.
  • the pair of left and right front pillars 3a are the frontmost pillars arranged in the front of the plurality of pillars 3a, 3b, and 3c in the front-rear direction of the work vehicle 20. Therefore, the cab 1 does not have another pillar in front of the front pillar 3a.
  • the pair of left and right rear pillars 3c are the rearmost pillars arranged at the rearmost of the plurality of pillars 3a, 3b, and 3c in the front-rear direction of the work vehicle 20. Therefore, the cab 1 does not have another pillar behind the rear pillar 3c.
  • the center pillar 3b is arranged between the front pillar 3a and the rear pillar 3c in the front-rear direction of the work vehicle 20.
  • the pair of left and right front pillars 3a are arranged so as to be spaced apart from each other in the left and right directions of the work vehicle 20.
  • the pair of left and right center pillars 3b are arranged so as to be spaced apart from each other in the left and right directions of the work vehicle 20.
  • the pair of left and right rear pillars 3c are arranged so as to be spaced apart from each other in the left-right direction of the work vehicle 20.
  • each of the pair of left and right front pillars 3a and the pair of left and right center pillars 3b are attached to the floor plate 2a and extend upward from the floor plate 2a.
  • Each of the pair of left and right rear pillars 3c is attached to the support plate 2b and extends upward from the support plate 2b.
  • the beam member 4 is connected to the upper end portion of the center pillar 3b and the upper end portion of the rear pillar 3c.
  • the beam member 4 extends in, for example, the front-rear direction of the work vehicle 20. Further, a beam member connecting the upper end of the front pillar 3a and the upper end of the center pillar 3b, a beam member connecting the upper ends of each pair of left and right front pillars 3a, and the upper ends of each of the pair of left and right center pillars 3b.
  • a beam member connecting the portions and a beam member connecting the upper ends of each of the pair of left and right rear pillars 3c may be provided.
  • the roof portion 9 is arranged above the cab 1 and covers the upper part of the floor plate 2a.
  • the roof portion 9 is supported by a beam member 4, a plurality of pillars 3a, 3b, 3c, and the like with respect to the floor plate 2a.
  • the plurality of windows 5 to 8 include a rear window 5, a side window 6, a front window 7, and a front diagonal window 8.
  • the front window 7 is arranged between a pair of left and right front pillars 3a.
  • the front diagonal window 8 is arranged between the front pillar 3a and the center pillar 3b.
  • the front oblique window 8 may be a door for getting on and off.
  • the boarding / alighting door 8 is a boarding / alighting port for an operator who operates the work vehicle 20.
  • the door 8 for getting on and off is rotatably supported by, for example, a center pillar 3b.
  • the boarding / alighting door 8 can move between the open state and the closed state of the cab 1 by rotating with respect to the center pillar 3b.
  • the front diagonal window 8 may be fitted and fixed (fitted to death) between the front pillar 3a and the center pillar 3b.
  • one of the pair of left and right front diagonal windows 8 may be a door for getting on and off, and the other of the pair of left and right front diagonal windows 8 may be a window for fitting and killing.
  • the side window 6 is arranged between the center pillar 3b and the rear pillar 3c.
  • the rear window 5 is arranged behind the pair of rear pillars 3c.
  • the rear window 5 projects rearward from each of the pair of rear pillars 3c, and is configured so that the outside of the cab 1 can be visually recognized from the internal space 1A of the cab 1.
  • the rear window 5 has a rear window 5a and a pair of rear side windows 5b. Each of the pair of rear side windows 5b is arranged so as to extend rearward from each of the pair of rear pillars 3c.
  • the rear window 5a is connected to the rear end of each of the pair of rear side windows 5b behind the pair of rear pillars 3c.
  • the rear window 5 is formed by a rear window 5a and a pair of rear side windows 5b to form bay windows with respect to a pair of left and right rear pillars 3c.
  • the rear window 5 has an angle at the joint between the rear window 5a and the rear side window 5b in a plan view.
  • the rear window 5 may have a curved surface shape without having an angle in a plan view.
  • the plan view means a viewpoint looking from above to below the work vehicle 20. Specifically, the plan view means a viewpoint viewed from above to below along the direction perpendicular to the floor plate 2a of the cab 1.
  • the rear window 5a and the rear side window 5b are connected to each other by, for example, a sealing material.
  • the sealant is made of, for example, silicone, but is not limited to silicone.
  • rear window 5a and the rear side window 5b may not be connected by a sealing material, but may be configured by bending an integral transparent member.
  • Each of the rear window 5a and the pair of rear side windows 5b is configured so that the outside of the cab 1 can be visually recognized from the internal space 1A of the cab 1.
  • Each of the rear window 5a and the pair of rear side windows 5b may have a transparent member, for example, so that the outside of the cab 1 can be visually recognized from the internal space 1A of the cab 1.
  • Each of the transparent member (first transparent member) of the rear window 5a and the transparent member (second transparent member) of the rear side window 5b is made of glass, for example.
  • the rear window 5 is made of a three-sided glass composed of a rear window 5a and a pair of rear side windows 5b.
  • each of the transparent member of the rear window 5a and the transparent member of the rear side window 5b may be made of a material other than glass, such as acrylic resin.
  • each of the rear window 5a and the pair of rear side windows 5b may be configured so that the outside of the cab 1 can be visually recognized from the internal space 1A of the cab 1 by being configured as, for example, a window frame having an opening. .. In this case, no transparent member or the like is arranged in the opening of the window frame, and the opening penetrates from the internal space 1A of the cab 1 to the outside of the cab 1.
  • the rear window 5a extends from the first rear side window 5b (5bR), which is one of the pair of rear side windows 5b, to the second rear side window 5b (5bL), which is the other of the pair of rear side windows 5b. It is composed of transparent members as a whole. Therefore, the rear window 5a is not provided with a pillar, a sealing material, or the like between the first rear side window 5bR and the second rear side window 5bL to block the view of the operator seated in the cab 1.
  • the rear side window 5b is entirely composed of a transparent member from the rear pillar 3c to the rear window 5a. Therefore, between the rear pillar 3c and the rear window 5a, no pillar, sealing material, or the like that blocks the view of the operator seated in the cab 1 is provided.
  • each of the front window 7 and the front diagonal window 8 is arranged between the front portion 2aa of the floor plate 2a and the roof portion 9 or the beam member.
  • the side window 6 is arranged between the support plate 2b and the roof portion 9 or the beam member 4.
  • the rear side window 5b is arranged between the support plate 2b and the roof portion 9.
  • the rear window 5a is arranged between the support plate 2b or the side plate 2c and the roof portion 9.
  • Each of the pair of left and right rear pillars 3c is tilted so as to be located rearward from the bottom to the top in the side view.
  • Each of the pair of left and right rear pillars 3c has an upward slope toward the rear in the lateral view.
  • the lower end of the rear pillar 3c is located in front of the upper end of the rear pillar 3c in a side view.
  • Each of the pair of left and right rear pillars 3c extends linearly, for example, from the lower end to the upper end of the rear pillars 3c.
  • the side view means a viewpoint in which the work vehicle 20 is viewed from the vehicle width direction (left-right direction) as shown in FIG. 1 or FIG. 2 (A).
  • the side window 6 is configured so that the width in the front-rear direction continuously expands from the bottom to the top in the side view. Therefore, the width in the front-rear direction at the upper end of the side window 6 is larger than the width in the front-rear direction at the lower end of the side window 6.
  • the rear window 5a is inclined so as to be located rearward from the lower side to the upper side in the side view.
  • the rear window 5a has an ascending slope toward the rear in the side view.
  • the rear pillar 3c is inclined at an acute angle ⁇ 1 with respect to the floor plate 2a in the side view.
  • the rear window 5a is inclined at an acute angle ⁇ 2 with respect to the floor plate 2a in a side view.
  • the inclination angle ⁇ 1 of the rear pillar 3c with respect to the floor plate 2a may be the same as or different from the inclination angle ⁇ 2 of the rear window 5a with respect to the floor plate 2a.
  • Each of the pair of left and right front pillars 3a may be inclined so as to be positioned forward from the bottom to the top in the side view.
  • Each of the pair of left and right front pillars 3a has a downward slope toward the rear in the side view.
  • the front window 7 is inclined so as to be positioned forward from the bottom to the top in the side view.
  • the front window 7 has a downward slope toward the rear in the side view.
  • the pair of left and right front pillars 3a and front window 7 may extend in the vertical direction so as to be orthogonal to the floor plate 2a.
  • each of the front window 7 and the pair of front diagonal windows 8 is configured so that the outside of the cab 1 can be visually recognized from the internal space 1A of the cab 1 as in the case of the rear window 5a and the pair of rear side windows 5b.
  • the transparent member may be, for example, glass or an acrylic resin.
  • the driver's seat 11 has a seat surface 11a on which the operator sits and a backrest 11b that supports the operator's back.
  • the driver's seat 11 is configured to slide in the front-rear direction in the cab 1.
  • the lower end of the rear pillar 3c is arranged in front of the straight lines L1 and L2 connecting either one of the right rear end RER and the left rear end REL of the seat surface 11a and the rear end outer REO of the traveling device 23. There is. At the position where the driver's seat 11 slides to the front end, the lower end of the rear pillar 3c is arranged in front of the straight lines L1 and L2 in a plan view.
  • FIG. 4 is a perspective view showing a partial configuration of a vehicle body frame in the work vehicle shown in FIG. 5 and 6 are side views and rear views showing the configuration of the vehicle body frame and the cab in the work vehicle shown in FIG. 1.
  • the vehicle body frame 21a mainly has a bottom plate 30, a pair of left and right side plates 31, a rib portion (keel) 32, and a pair of left and right brackets 33.
  • Each of the pair of left and right side plates 31 is connected to the pair of left and right ends of the bottom plate 30.
  • Each of the pair of left and right side plates 31 extends upward from the end of the bottom plate 30.
  • the pair of left and right side plates 31 are arranged so as to face each other with a gap in the left and right directions of the work vehicle 20.
  • the rib portion 32 is provided to ensure the strength of the vehicle body frame 21a.
  • the rib portion 32 is arranged from the bottom to the top of the side plate 31.
  • the rib portion 32 has a pair of left and right vertical ribs 32a and horizontal ribs 32b.
  • Each of the pair of left and right vertical ribs 32a is integrally formed with the pair of left and right side plates 31.
  • the horizontal rib 32b is integrally formed with the bottom plate 30.
  • Each of the pair of left and right vertical ribs 32a extends in the vertical direction along the side plate 31.
  • the pair of left and right vertical ribs 32a are arranged so as to face each other in the left-right direction of the work vehicle 20 with a gap from each other.
  • the horizontal ribs 32b are connected to the lower ends of each pair of left and right vertical ribs 32a. As a result, the rib portion 32 has a U-shape when viewed from the front.
  • the front view means a viewpoint looking from the front to the rear of the work vehicle 20.
  • the vertical rib 32a is connected to one side plate 31 of the pair of left and right side plates 31, and projects laterally from one side plate 31 toward the other side plate 31 of the pair of left and right side plates 31.
  • the vertical rib 32a is connected to the side plate 31 by welding, for example.
  • the horizontal rib 32b extends in the left-right direction along the bottom plate 30.
  • the lateral rib 32b projects upward from the bottom plate 30.
  • the lateral rib 32b is connected to the bottom plate 30 by welding, for example.
  • Each of the pair of left and right brackets 33 is provided to support the cab 1 with the vehicle body frame 21a.
  • Each of the left and right pair of brackets 33 is connected to the upper end of the rib portion 32.
  • each of the pair of left and right brackets 33 is connected to the upper ends of the pair of left and right vertical ribs 32a by welding, for example.
  • the bracket 33 extends upward from the upper end of the vertical rib 32a.
  • the cab 1 is supported by the vehicle body frame 21a by a pair of left and right brackets 33 and a pair of left and right cab support brackets 34.
  • the cab support bracket 34 is connected to the side plate 31 by welding or the like.
  • a support plate 2b of the cab 1 is attached to each of the pair of left and right brackets 33 via a vibration-proof mounting device such as a damper.
  • the floor plate 2a of the cab 1 is attached to each of the pair of left and right cab support brackets 34 via a vibration-proof mounting device such as a damper.
  • the lower end of the rear pillar 3c is located directly above the upper end of the bracket 33.
  • the lower end of the rear pillar 3c may be directly connected to the upper end of the bracket 33 via a vibration isolation mounting device such as a damper.
  • Both the upper end of the bracket 33 and the lower end of the rear pillar 3c are located directly below the beam member 4 in the side view. Both the upper end of the bracket 33 and the lower end of the rear pillar 3c are located directly above the vertical rib 32a in the rib portion 32.
  • the pair of left and right brackets 33 are arranged so as to sandwich the rear portion 2ab and the side plate 2c of the floor plate 2a.
  • FIG. 7 is a schematic cross-sectional view corresponding to lines III-III of FIG. 2 (A) in the cab of the comparative example.
  • FIG. 8 is a view showing a state in which the work vehicle of the comparative example shown in FIG. 7 is viewed obliquely rearward from the inside of the cab.
  • the above eye point EP is, for example, 50 of adult boys specified in JIS D 4607 "Three-dimensional sitting human body model for measuring vehicle interior dimensions (3DM-JM 50)" or ISO 6549 "road vehicles-Procedure for H-point determination”.
  • % Tile Can be set using a human model.
  • This eye point EP can be set as a reference point in the passenger compartment. Specifically, for example, the method shown in "Attachment 81 of the Notification (Ministry of Land, Infrastructure, Transport and Tourism) that defines the details of safety standards for road transport vehicles”. Can be determined by.
  • the rear window 5 projects rearward from each of the pair of rear pillars 3c, and the outside of the cab 1 is extended from the internal space 1A of the cab 1. It is configured to be visible.
  • the rear pillar 3c is located forward at a distance from the rearmost end in the internal space 1A of the cab 1. Therefore, the rear view angle ⁇ 1 of the operator seated in the driver's seat 11 in the plan view is larger than the rear view angle ⁇ 2 of the comparative example shown in FIG. 7. Therefore, the rear view of the operator seated in the driver's seat 11 in the cab 1 is improved.
  • the rear end of the track-type traveling device 23 tends to interfere with obstacles during turning. Therefore, it is important that the operator seated in the driver's seat 11 in the cab 1 can visually recognize the vicinity of the rear end of the track-type traveling device 23.
  • the rear pillar 3c is located at the rearmost end in the internal space 1A of the cab 1. Therefore, as shown in FIG. 8, when the operator seated in the driver's seat 11 in the cab 1 looks diagonally behind the bulldozer 20, the rear pillar 3c visually recognizes the vicinity of the rear end of the track-type traveling device 23 (FIG. 1). Difficult to do.
  • the rear pillar 3c is inclined so as to be positioned rearward from the lower side to the upper side in the side view. Further, behind the rear pillar 3c, a rear side window 5b is provided so that the outside can be visually recognized from the internal space 1A of the cab 1.
  • the position of the lower end of the rear pillar 3c in the present embodiment is ahead of the position of the lower end of the rear pillar 3c in the comparative example shown in FIG.
  • the operator seated in the driver's seat 11 in the cab 1 looks diagonally behind the bulldozer 20, it becomes easy to visually recognize the rear of the storage portion 21c of the vehicle body 21.
  • the rear pillar 3c is inclined so as to be positioned rearward from the lower side to the upper side in the side view. Therefore, as shown in FIG. 9, the width of the side window 6 in the front-rear direction becomes wider from the lower part to the upper part. Therefore, when the bulldozer 20 is viewed in the left-right direction (sideways) through the side window 6, the upper part of the side window 6 has a field of view equivalent to that of the upper part of the side window 6 in the comparative example shown in FIG. Can be secured. Therefore, when the operator seated in the driver's seat 11 in the cab 1 looks in the left-right direction of the bulldozer 20, it is possible to secure a good distant field of view equivalent to that of the comparative example shown in FIG.
  • the rear window 5a is inclined so as to be located rearward from the lower side to the upper side.
  • the internal space 1A of the cab 1 is expanded rearward. Therefore, it is possible to increase the amount of reclining rearward of the driver's seat 11 in the cab 1.
  • the rear window 5a is inclined so as to be located rearward from the lower side to the upper side. As a result, the internal space 1A of the cab 1 is expanded rearward. Therefore, the operator in the cab 1 feels oppressive.
  • the rear window 5a is a pair of rear side windows 5b from the first rear side window 5bR, which is one of the pair of rear side windows 5b.
  • the entire second rear side window 5bL is composed of a transparent member.
  • the rear side window 5b is composed of a transparent member as a whole from the rear pillar 3c to the rear window 5a.
  • the vehicle body frame 21a has a rib portion 32 and a bracket 33 connected to the upper end of the rib portion 32.
  • the lower end of the rear pillar 3c is located directly above the upper end of the bracket 33.
  • the rear pillar 3c is inclined so as to be positioned rearward from the lower side to the upper side in the side view. Therefore, the connection portion between the lower end of the rear pillar 3c and the upper end of the bracket 33 can be brought closer to the center of gravity of the cab 1. Therefore, the vibration of the cab 1 can be suppressed to be small.
  • the rear pillar 3c is inclined so as to be positioned rearward from the lower side to the upper side in the side view. Further, behind the rear pillar 3c, a rear side window 5b is provided so that the outside can be visually recognized from the internal space 1A of the cab 1. Therefore, it is possible to prevent the bracket 33 from protruding behind the rearmost end of the cab 1.
  • the cab 1 has a beam member 4 connected between the upper end portion of the center pillar 3b and the upper end portion of the rear pillar 3c.
  • the upper end of the bracket 33 and the lower end of the rear pillar 3c are located directly below the beam member 4 in the side view.
  • the load applied to the beam member 4 can be firmly received by the rib portion 32 of the vehicle body frame 21a through the rear pillar 3c and the bracket 33.
  • the upper end of the bracket 33 and the lower end of the rear pillar 3c are located directly above the rib portion 32.
  • FIG. 11 in a plan view, either one of the right rear end RER and the left rear end REL on the seat surface 11a of the driver's seat 11 and the rear end outer REO of the traveling device 23.
  • the lower end of the rear pillar 3c is arranged in front of the straight lines L1 and L2 connecting the two.
  • the rear pillar 3c does not block the view when the operator seated on the seat surface 11a of the driver's seat 11 visually recognizes the rear end outer REO of the traveling device 23.
  • the lower end of the rear pillar 3c is arranged in front of the straight lines L1 and L2 in a plan view at the position where the driver's seat 11 slides to the front end.
  • the rear pillar 3c does not block the view when the operator seated on the seat surface 11a of the driver's seat 11 visually recognizes the rear end outer REO of the traveling device 23.
  • 1 cab 1A internal space, 2a floor plate, 2aa front part, 2ab rear part, 2b support plate, 2c, 31 side plate, 3a front pillar, 3b center pillar, 3c rear pillar, 4 beam member, 5 rear window, 5a rear window, 5b Rear side window, 5bR 1st rear side window, 5bL 2nd rear side window, 6 side window, 7 front window, 8 front diagonal window, 9 roof part, 11 driver's seat, 11a seat, 11b backrest, 20 bulldozer (Work vehicle), 21 body, 21a body frame, 21b engine room, 21c storage, 22 work machine, 22a blade, 22b frame, 22c tilt cylinder, 22d elevating cylinder, 23 claw-type traveling device, 24 ripper device, 24a claw , 30 bottom plate, 32 ribs, 32a vertical ribs, 32b horizontal ribs, 33 brackets, 34 cab support brackets, EP eye points, REL left rear end, RER right rear end, REO rear end outside.

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  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Component Parts Of Construction Machinery (AREA)
  • Body Structure For Vehicles (AREA)

Abstract

L'invention concerne chaque montant d'une paire de montants arrière (3c) qui est incliné de façon à être positionné progressivement vers l'arrière de bas en haut dans une vue latérale. Une fenêtre arrière (5) fait saillie vers l'arrière à partir de chacun de la paire de montants arrière (3c) de sorte que l'extérieur d'une cabine (1) soit visible depuis un espace interne (1A) de la cabine.
PCT/JP2021/008038 2020-04-07 2021-03-03 Cabine de véhicule de travail, véhicule de travail et bouteur WO2021205781A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2020069254A JP7423393B2 (ja) 2020-04-07 2020-04-07 作業車両およびブルドーザ
JP2020-069254 2020-04-07

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WO2021205781A1 true WO2021205781A1 (fr) 2021-10-14

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PCT/JP2021/008038 WO2021205781A1 (fr) 2020-04-07 2021-03-03 Cabine de véhicule de travail, véhicule de travail et bouteur

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JP (1) JP7423393B2 (fr)
WO (1) WO2021205781A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050280286A1 (en) * 2004-06-22 2005-12-22 Caterpillar Inc. Operator's cab for a work machine
JP2012077536A (ja) * 2010-10-04 2012-04-19 Hitachi Constr Mach Co Ltd 建設機械
WO2019077847A1 (fr) * 2017-10-20 2019-04-25 株式会社小松製作所 Cabine de véhicule de travail, véhicule de travail et chargeuse sur pneus
US20190382981A1 (en) * 2017-02-28 2019-12-19 Doosan Infracore Co., Ltd. Cabin assembly for construction equipment
KR20190140618A (ko) * 2018-06-12 2019-12-20 두산인프라코어 주식회사 캐빈 구조체 및 이를 포함하는 건설 기계

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050280286A1 (en) * 2004-06-22 2005-12-22 Caterpillar Inc. Operator's cab for a work machine
JP2012077536A (ja) * 2010-10-04 2012-04-19 Hitachi Constr Mach Co Ltd 建設機械
US20190382981A1 (en) * 2017-02-28 2019-12-19 Doosan Infracore Co., Ltd. Cabin assembly for construction equipment
WO2019077847A1 (fr) * 2017-10-20 2019-04-25 株式会社小松製作所 Cabine de véhicule de travail, véhicule de travail et chargeuse sur pneus
KR20190140618A (ko) * 2018-06-12 2019-12-20 두산인프라코어 주식회사 캐빈 구조체 및 이를 포함하는 건설 기계

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JP2021165489A (ja) 2021-10-14
JP7423393B2 (ja) 2024-01-31

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