WO2022123986A1 - 建設機械 - Google Patents
建設機械 Download PDFInfo
- Publication number
- WO2022123986A1 WO2022123986A1 PCT/JP2021/041287 JP2021041287W WO2022123986A1 WO 2022123986 A1 WO2022123986 A1 WO 2022123986A1 JP 2021041287 W JP2021041287 W JP 2021041287W WO 2022123986 A1 WO2022123986 A1 WO 2022123986A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- antenna
- cable
- antenna device
- heat exchanger
- chamber
- Prior art date
Links
- 238000010276 construction Methods 0.000 title claims description 23
- 230000001012 protector Effects 0.000 claims description 49
- 238000001816 cooling Methods 0.000 claims description 15
- 238000003780 insertion Methods 0.000 claims description 13
- 230000037431 insertion Effects 0.000 claims description 13
- 230000002093 peripheral effect Effects 0.000 claims description 13
- 238000005192 partition Methods 0.000 claims description 10
- 238000000638 solvent extraction Methods 0.000 claims description 3
- 239000010720 hydraulic oil Substances 0.000 description 10
- 238000007689 inspection Methods 0.000 description 5
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 5
- 239000002828 fuel tank Substances 0.000 description 4
- 230000004308 accommodation Effects 0.000 description 3
- 238000009412 basement excavation Methods 0.000 description 3
- 239000004575 stone Substances 0.000 description 3
- 239000000498 cooling water Substances 0.000 description 2
- 239000013013 elastic material Substances 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000009430 construction management Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 239000004576 sand Substances 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
- E02F9/0808—Improving mounting or assembling, e.g. frame elements, disposition of all the components on the superstructures
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R11/00—Arrangements for holding or mounting articles, not otherwise provided for
- B60R11/02—Arrangements for holding or mounting articles, not otherwise provided for for radio sets, television sets, telephones, or the like; Arrangement of controls 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
- E02F9/08—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
-
- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/27—Adaptation for use in or on movable bodies
- H01Q1/32—Adaptation for use in or on road or rail vehicles
- H01Q1/325—Adaptation for use in or on road or rail vehicles characterised by the location of the antenna on the vehicle
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
- H01Q21/28—Combinations of substantially independent non-interacting antenna units or systems
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
- B60Y2200/00—Type of vehicle
- B60Y2200/40—Special vehicles
- B60Y2200/41—Construction vehicles, e.g. graders, excavators
- B60Y2200/412—Excavators
-
- 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
- E02F9/10—Supports for movable superstructures mounted on travelling or walking gears or on other superstructures
- E02F9/12—Slewing or traversing gears
- E02F9/121—Turntables, i.e. structure rotatable about 360°
Definitions
- This disclosure relates to a construction machine equipped with an antenna device.
- a hydraulic excavator representing a construction machine includes a self-propelled lower traveling body, an upper turning body provided so as to be able to turn on the lower traveling body, and a working device provided on the front side of the upper turning body.
- a hydraulic excavator in which two antenna devices are mounted on an upper swing body is known.
- This antenna device consists of a GNSS (Global Navigation Satellite System) antenna such as a GPS (Global Position System) antenna, and measures the position information of the hydraulic excavator based on the position information of these two antenna devices, and excavation work, etc.
- GNSS Global Navigation Satellite System
- GPS Global Position System
- the antenna device is very expensive, it is necessary to prevent the antenna device from being damaged by flying stones or the like when performing work that does not use the antenna device or when transporting a hydraulic excavator using a transport vehicle. There is. Further, when the operation of the hydraulic excavator is stopped, it is necessary to prevent the antenna device from being stolen. For this reason, when performing work that does not use the antenna device, or when the operation of the hydraulic excavator is stopped, it is a method to remove the antenna device from the vehicle body and take it back to a lockable cab or a warehouse for storage. It has been adopted.
- a cable for connecting to the controller is connected to the antenna device. Therefore, when the antenna device is removed from the vehicle body and stored in a cab, a warehouse, or the like, it is necessary to remove the cable from the antenna device. Further, when the antenna device stored in the cab or the like is attached to the vehicle body, it is necessary to connect the cable to the antenna device. Therefore, there is a problem that the work of removing the antenna device from the vehicle body and storing it and the work of attaching the stored antenna device to the vehicle body are complicated.
- An object of the present invention is to provide a construction machine capable of enhancing the workability of removing the antenna device from the vehicle body and storing it and attaching the stored antenna device to the vehicle body.
- the present invention comprises a self-propelled vehicle body and a working device provided on the front side of the vehicle body, and the vehicle body is provided on the vehicle body frame, a building cover provided on the vehicle body frame, and the vehicle body.
- a construction machine comprising an antenna mounting tool and an antenna device detachably attached to the antenna mounting tool and connected to a controller via a cable
- the vehicle body is provided in the building cover and the antenna is provided.
- An antenna that accommodates the antenna device removed from the fixture in a state where the cable is connected, and an antenna that is provided in the antenna accommodation chamber and holds the antenna device removed from the antenna fixture.
- the building cover is provided with a holder, and is characterized in that the antenna accommodating chamber is openably and closably covered, and the antenna accommodating chamber includes a lockable door in a closed state.
- the antenna device can be housed in the antenna accommodating chamber with the cable connected, and can be attached to the vehicle body with the cable connected. Therefore, it is possible to improve the workability of the work of removing the antenna device from the vehicle body and storing it, and the work of attaching the stored antenna device to the vehicle body.
- the traveling direction of the hydraulic excavator is defined as the front-rear direction
- the direction orthogonal to the traveling direction of the hydraulic excavator is defined as the left-right direction.
- the hydraulic excavator 1 representing a construction machine includes a crawler-type lower traveling body 2 capable of self-propelling in the front-rear direction, an upper turning body 3 mounted on the lower traveling body 2 so as to be able to turn, and the front side of the upper turning body 3. It is configured to include the working device 4 provided in the above.
- the lower traveling body 2 and the upper turning body 3 constitute a vehicle body of the hydraulic excavator 1.
- the hydraulic excavator 1 travels on the work site by the lower traveling body 2, and excavates earth and sand by moving the work device 4 up and down while turning the upper turning body 3.
- the work device 4 is rotatably attached to the boom 4A attached to the front side of the swivel frame 5, which will be described later, the arm 4B rotatably attached to the tip of the boom 4A, and the tip of the arm 4B. It is configured to include the bucket 4C and the bucket 4C. Further, the working device 4 has a boom cylinder 4D for driving the boom 4A, an arm cylinder 4E for driving the arm 4B, and a bucket cylinder 4F for driving the bucket 4C.
- the upper swivel body 3 is provided so as to be swivelable on the lower traveling body 2.
- the upper swivel body 3 includes a swivel frame 5, a counterweight 6, an engine 7, a cab 10, a building cover 11, a hydraulic oil tank 22, a fuel tank 23, and the like, which will be described later.
- the swivel frame 5 as the vehicle body frame constitutes the base of the upper swivel body 3.
- the swivel frame 5 includes a bottom plate 5A, a left vertical plate 5B and a right vertical plate 5C, and a left side frame 5D and a right side frame 5E.
- the left vertical plate 5B and the right vertical plate 5C are erected on the bottom plate 5A and extend in the front-rear direction with a predetermined interval in the left-right direction.
- the left side frame 5D and the right side frame 5E are arranged on the left and right sides of the bottom plate 5A and extend in the front-rear direction.
- the base ends of the boom 4A and the boom cylinder 4D are rotatably attached to the front side of the left vertical plate 5B and the right vertical plate 5C.
- the counterweight 6 is provided on the rear end side of the swivel frame 5.
- the counterweight 6 is formed as a heavy object having an arcuate rear surface, and has a weight balance with the working device 4.
- the engine 7 as a prime mover is located on the front side of the counterweight 6 and mounted on the rear side of the turning frame 5.
- the engine 7 is arranged in a horizontal position extending in the left-right direction.
- a hydraulic pump 8 is attached to the right side of the engine 7.
- the hydraulic pump 8 is driven by the engine 7 to use the hydraulic oil stored in the hydraulic oil tank 22 as a traveling motor of the lower traveling body 2, a swivel motor of the upper swivel body 3 (not shown), and a working device 4. Discharge toward the hydraulic actuators of each cylinder 4D, 4E, 4F, etc.
- an electric motor or a hybrid type prime mover in which an engine and an electric motor are combined can be used.
- the heat exchanger 9 is located on the left side of the engine 7 and is mounted on the swivel frame 5.
- the heat exchanger 9 includes a radiator for cooling engine cooling water, an oil cooler for cooling hydraulic oil, and the like.
- the heat exchanger 9 dissipates heat from the engine cooling water, hydraulic oil, etc. into the cooling air by supplying the cooling air (arrow F in FIG. 3) introduced into the building cover 11 by the cooling fan 7A. do.
- the cab 10 is located on the left side of the left vertical plate 5B of the swivel frame 5 and is provided on the left front side of the swivel frame 5.
- the cab 10 is formed in a box shape that defines the driver's cab, and a driver's seat (not shown) on which the operator sits is provided inside the cab 10.
- a traveling lever pedal device (not shown) for controlling the traveling operation of the hydraulic excavator 1 is provided on the front side of the driver's seat, and the turning operation of the upper swivel body 3 is provided on both left and right sides of the driver's seat.
- An operation lever device (not shown) for controlling the operation of the work device 4 is provided.
- the building cover 11 is located on the front side of the counterweight 6 and is provided on the swivel frame 5.
- the building cover 11 is supported by a left support member 15, a right support member 18, and the like, which will be described later, provided on the swivel frame 5, and includes a left rear side door 16, a left front side door 17, a right side door 19, and a top cover. 20 and an engine cover 21 are included.
- the building cover 11 covers on-board equipment such as the engine 7, the hydraulic pump 8, and the heat exchanger 9 mounted on the swivel frame 5.
- a prime mover room (not shown) for accommodating the engine 7, a heat exchanger room 12 for accommodating the heat exchanger 9, and a pump room 13 for accommodating the hydraulic pump 8 are formed. ..
- a partition member (firewall) 14 for partitioning the motor room and the pump room 13 is provided (see FIG. 10).
- a plurality of left support members 15 are erected on the left side of the swivel frame 5 at intervals in the front-rear direction.
- the left support member 15 is a left rear support member 15A arranged adjacent to the left front side of the counterweight 6, a left intermediate support member 15B arranged on the front side of the left rear support member 15A, and a left intermediate support member 15B. It is configured to include a left front support member (not shown) arranged on the front side.
- the left rear side door 16 constituting the building cover 11 is supported by the left rear support member 15A via a hinge mechanism (not shown).
- the left rear side door 16 covers the heat exchanger chamber 12 so as to be openable and closable from the left side by rotating in the front-rear direction or the left-right direction (horizontal direction) around the hinge mechanism. That is, the left rear side door 16 is rotationally displaced between the open position (position in FIG. 4) that opens the heat exchanger chamber 12 and the closed position that closes the heat exchanger chamber 12.
- the left front side door 17 is rotatably supported by the left front support member in the front-rear direction or the left-right direction (horizontal direction) via a hinge mechanism (neither is shown).
- the left front side door 17 covers a utility room (not shown) arranged on the front side of the heat exchanger room 12 so as to be openable and closable from the left side.
- a lock mechanism 17A is provided on the left front side door 17, and by locking the lock mechanism 17A, the left front side door 17 is held in the closed position.
- the rear end side of the left front side door 17 covers (overlaps) the front end side of the left rear side door 16. ).
- the left rear side door 16 cannot be opened unless the lock mechanism 17A of the left front side door 17 is unlocked. Therefore, the left rear side door 16 is locked in the closed position by the lock mechanism 17A of the left front side door 17.
- a plurality of right support members 18 are erected on the right side of the swivel frame 5 at intervals in the front-rear direction.
- the right support member 18 includes a right rear support member 18A arranged adjacent to the right front side of the counterweight 6 and a right front support member 18B arranged on the front side of the right rear support member 18A.
- the right side door 19 constituting the building cover 11 is supported by the right rear support member 18A via a hinge mechanism (not shown).
- the right side door 19 covers the pump chamber 13 so as to be openable and closable from the right side by rotating in the front-rear direction or the left-right direction (horizontal direction) around the hinge mechanism. That is, the right side door 19 is rotationally displaced between the open position where the pump chamber 13 is opened and the closed position where the pump chamber 13 is closed.
- the right side door 19 is held in the closed position by locking the lock mechanism 19A.
- the top cover 20 extends horizontally between the upper ends of the left rear side door 16 and the left front side door 17 and the upper end of the right side door 19.
- the top cover 20 is formed with an inspection opening (not shown) located above the engine 7, and maintenance work for the engine 7 and the like is performed through the inspection opening.
- the engine cover 21 as a prime mover cover is provided on the upper surface cover 20 with the engine 7 covered from above.
- the engine cover 21 extends in the left-right direction in a state of being raised upward from the upper surface cover 20, and closes the inspection opening formed in the upper surface cover 20.
- the rear end side of the engine cover 21 is attached to a support member (neither is shown) via a hinge mechanism, and the front end side rotates in the vertical direction around the hinge mechanism.
- the engine cover 21 can be opened and closed between the open position where the inspection opening is opened and the closed position where the inspection opening is closed with respect to the upper surface cover 20.
- the range of the top cover 20 on the front side of the engine cover 21 is the work scaffold 20A.
- the work scaffold 20A forms a scaffold for the worker to open the engine cover 21 and perform maintenance work on the engine 7 and the like.
- the hydraulic oil tank 22 is located on the swivel frame 5 on the right side of the right vertical plate 5C of the swivel frame 5 and on the front side of the hydraulic pump 8.
- the hydraulic oil tank 22 stores hydraulic oil supplied to hydraulic actuators such as the traveling motor of the lower traveling body 2, the turning motor of the upper rotating body 3, and the cylinders 4D, 4E, 4F of the working device 4.
- the upper surface of the hydraulic oil tank 22 is formed in the same plane as the upper surface cover 20.
- the fuel tank 23 is provided on the right side of the right vertical plate 5C of the swivel frame 5 and adjacent to the front side of the hydraulic oil tank 22.
- the fuel tank 23 stores the fuel supplied to the engine 7.
- the upper surface of the fuel tank 23 forms the same plane as the upper surface cover 20.
- the first antenna device 24 is provided on one side in the left-right direction of the upper swing body 3, specifically, on the left side of the counterweight 6.
- the second antenna device 27 is provided on the other side in the left-right direction of the upper swing body 3, specifically, on the right front side of the upper surface cover 20 above the pump chamber 13.
- the first and second antenna devices 24 and 27 are configured by, for example, a GNSS antenna, and are connected to a controller (not shown) arranged inside the building cover 11.
- the first antenna device 24 is detachably attached to the first antenna fixture 25 fixed to the counterweight 6.
- the first antenna attachment 25 has a fixed pedestal 25A fixed to the upper surface of the counterweight 6 and a rod-shaped support mast 25B extending vertically upward from the fixed pedestal 25A.
- a fitting hole 24A extending in the vertical direction is formed on the lower side of the first antenna device 24 (see FIG. 6).
- the first antenna device 24 is fixed by using a bolt or the like in a state where the fitting hole 24A is fitted to the tip of the first antenna attachment 25 (support mast 25B).
- the first cable 26 electrically connects the controller arranged in the building cover 11 and the first antenna device 24.
- the controller measures the position information of the hydraulic excavator 1 based on the signals from the first antenna device 24 and the second antenna device 27, and controls the operation of the hydraulic excavator 1.
- the first cable 26 is composed of an antenna side cable 26A connected to the first antenna device 24 and a controller side cable (not shown) connected to the controller.
- the antenna side cable 26A is arranged outside the upper swivel body 3, and the controller side cable is arranged inside the building cover 11.
- One end 26B of the antenna side cable 26A is detachably connected to the first antenna device 24, and an antenna side connector 26C is provided at the other end of the antenna side cable 26A (see FIG. 7).
- One end of the controller-side cable is connected to the controller, and the other end of the controller-side cable is connected to a controller-side connector (not shown) arranged on the top cover 20. Therefore, by connecting the antenna-side connector 26C provided on the antenna-side cable 26A to the controller-side connector arranged on the top cover 20, the first antenna device 24 and the controller can be connected via the first cable 26. Are electrically connected.
- the second antenna device 27 is detachably attached to the second antenna fixture 28 fixed to the right front side of the upper surface cover 20 above the pump chamber 13.
- the second antenna attachment 28 has a fixed pedestal 28A fixed to the upper surface of the upper surface cover 20 and a rod-shaped support mast 28B extending vertically upward from the fixed pedestal 28A.
- a fitting hole (not shown) similar to that of the first antenna device 24 is formed on the lower side of the second antenna device 27, and the second antenna device 27 supports the fitting hole at the tip of the mast 28B. It is fixed with a bolt or the like in a state of being fitted to the antenna.
- the second cable 29 electrically connects between the controller (not shown) arranged in the building cover 11 and the second antenna device 27.
- the second cable 29 includes an antenna-side cable 29A connected to the second antenna device 27 and a controller-side cable 29B connected to the controller.
- the antenna side cable 29A is arranged outside the upper swivel body 3, and the controller side cable 29B is mainly arranged inside the building cover 11.
- One end 29C of the antenna side cable 29A is detachably connected to the second antenna device 27, and an antenna side connector 29D is provided at the other end of the antenna side cable 29A.
- One end of the controller-side cable 29B is connected to the controller, and the other end of the controller-side cable 29B is provided with a controller-side connector 29E.
- the controller-side connector 29E is arranged on the upper surface cover 20 adjacent to the fixed pedestal 28A of the second antenna fixture 28. Therefore, by connecting the antenna-side connector 29D provided on the antenna-side cable 29A to the controller-side connector 29E, the second antenna device 27 and the controller are electrically connected via the second cable 29. Will be done.
- the first antenna accommodating chamber is formed by the heat exchanger chamber 12. As shown in FIG. 4, in the heat exchanger chamber 12, the first antenna device 24 removed from the first antenna fixture 25 is connected to the antenna side cable 26A of the first cable 26. Contain.
- the heat exchanger chamber 12 is opened by opening the left rear side door 16, closed by closing the left rear side door 16, and locked by the lock mechanism 17A of the left front side door 17.
- the first antenna holder 30 is provided in the heat exchanger chamber 12, which is the first antenna accommodating chamber. As shown in FIGS. 4 to 6, the first antenna holder 30 is attached to the left rear support member 15A that supports the left rear side door 16, and is removed from the first antenna attachment 25. Holds the antenna device 24 of.
- the first antenna holder 30 includes a base member 30A bent in an L shape and a cylindrical projecting member 30B provided on the upper surface of the base member 30A and projecting vertically upward.
- the projecting member 30B has an outer diameter dimension equal to that of the support mast 25B of the first antenna fixture 25.
- the first antenna holder 30 is arranged in the heat exchanger chamber 12 by fixing the base member 30A to the upper portion of the left rear support member 15A by using the bolt 30C. Therefore, by fitting the fitting hole 24A of the first antenna device 24 into the projecting member 30B of the first antenna holder 30, the first antenna device 24 is stabilized in the heat exchanger chamber 12. Can be held.
- the first antenna holder 30 holds the first antenna device 24, and the first antenna device 24 receives the cooling air supplied to the heat exchanger 9. It is provided at a position that does not overlap with the heat exchanger 9 with respect to the flow direction (the left-right direction indicated by the arrow F in FIG. 3). As a result, even when the first antenna device 24 is held by the first antenna holder 30 in the heat exchanger chamber 12, the cooling air supplied to the heat exchanger 9 is the first antenna device 24. It is possible to supply sufficient cooling air to the heat exchanger 9 without being hindered by the heat exchanger 9.
- the notch groove 31 as a cable insertion portion is provided on the left end edge 20B side of the top cover 20.
- the notch groove 31 is inserted with the first cable 26 (antenna side cable 26A) connected to the first antenna device 24.
- the first antenna device 24 can be accommodated in the heat exchanger chamber 12 in a state where the antenna side cable 26A is connected to the first antenna device 24.
- the notch groove 31 is a portion where the upper surface cover 20 and the upper end edge 16A of the left rear side surface door 16 come into contact with each other when the left rear side door 16 is closed, that is, the left end edge of the upper surface cover 20. It has a wide opening end 31A that opens to 20B.
- the antenna side cable 26A is smoothly guided to the notch groove 31 through the open end 31A.
- the cable protector 32 is provided between the antenna side cable 26A of the first cable 26 and the notch groove 31 in a state where the first antenna device 24 is held by the first antenna holder 30.
- the cable protector 32 is made of an annular body attached to the antenna-side cable 26A, and is formed of an elastic material such as rubber.
- the inner peripheral side of the cable protector 32 is a cable insertion hole 32A, and the antenna side cable 26A is inserted through the cable insertion hole 32A from the axial direction.
- a small-diameter constricted portion 32B is formed on the outer peripheral side of the cable protector 32, and the constricted portion 32B engages with the notch groove 31 of the upper surface cover 20.
- the cable protector 32 is attached to the antenna side cable 26A in advance, and the first antenna device 24 is held by the first antenna holder 30, and as shown in FIG. 9, the antenna side.
- the cable protector 32 attached to the cable 26A is engaged with the notch groove 31 of the top cover 20.
- the antenna side cable 26A is prevented from being rubbed against the notch groove 31 and damaged, and the antenna side cable 26A is protected.
- the second antenna accommodating chamber is formed by the pump chamber 13. As shown in FIG. 10, the pump chamber 13 accommodates the second antenna device 27 removed from the second antenna fixture 28 in a state where the antenna side cable 29A of the second cable 29 is connected. .. The pump chamber 13 is opened by opening the right side door 19, closed by closing the right side door 19, and locked by the lock mechanism 19A.
- the second antenna holder 33 is provided in the pump chamber 13 which is the second antenna accommodating chamber. As shown in FIG. 10, the second antenna holder 33 is attached to the partition member 14 that separates the engine chamber and the pump chamber 13, and the second antenna device 27 is removed from the second antenna fixture 28. To hold. Similar to the first antenna holder 30, the second antenna holder 33 includes a base member 33A fixed to the partition member 14 using bolts and a protruding member (not shown) provided on the base member 33A. It is composed of and. Then, by fitting the fitting hole (not shown) of the second antenna device 27 into the protruding member of the second antenna holder 33, the second antenna device 27 is stabilized in the pump chamber 13. Can be held.
- a notch groove 34 as a cable insertion portion is provided on the right end edge 20C side of the top cover 20.
- the notch groove 34 is inserted with the second cable 29 (antenna side cable 29A) connected to the second antenna device 27.
- the second antenna device 27 can be accommodated in the pump chamber 13 with the antenna side cable 29A connected to the second antenna device 27.
- the notch groove 34 has an opening end 34A that opens to a portion where the upper surface cover 20 and the upper end edge 19B of the right side door 19 abut, that is, the right end edge 20C of the upper surface cover 20 in a state where the right side door 19 is closed. is doing.
- the antenna-side cable 29A is smoothly guided to the notch groove 34 through the open end 34A.
- a cable protector 32 is provided between the antenna side cable 29A of the second cable 29 and the notch groove 34.
- a cable protector 32 is attached to the antenna side cable 29A in advance, and the cable protector attached to the antenna side cable 29A while the second antenna device 27 is held by the second antenna holder 33. 32 is engaged with the notch groove 34 of the top cover 20. As a result, the antenna side cable 29A is prevented from being rubbed against the notch groove 34 and damaged, and the antenna side cable 29A is protected.
- the hydraulic excavator 1 has the above-mentioned configuration, and the operation of the hydraulic excavator 1 will be described below.
- the first antenna device 24 is attached to the first antenna fixture 25 as shown in FIGS. 1 to 3.
- the second antenna device 27 is attached to the second antenna fixture 28.
- the operator gets on the cab 10 and sits in the driver's seat (not shown) to start the engine 7.
- the hydraulic excavator 1 can be driven toward the work site by operating the traveling lever pedal device (not shown). Further, by operating the operation lever device (not shown), excavation work or the like can be performed using the work device 4 while turning the upper swivel body 3.
- the first and second antenna devices 24 and 27 receive the position information of the hydraulic excavator 1 from the satellite and transmit this position information to the controller (not shown).
- the controller measures the position information of the hydraulic excavator 1 based on the position information from the first and second antenna devices 24 and 27. Then, the controller collates the position information of the hydraulic excavator 1, the tip position information of the work device 4 obtained from the sensor attached to the work device 4, with the terrain data and the target terrain data, and constructs the target terrain.
- the construction information (calculation result) is displayed on the monitor in the cab 10.
- the operator can perform construction on the target terrain by controlling the operation of the work device 4 by using the operation lever device while checking the construction information displayed on the monitor.
- the first and second antenna devices 24 and 27 are removed from the upper swing body 3 to prevent theft.
- the first antenna device 24 is removed from the support mast 25B of the first antenna fixture 25 with one end 26B of the antenna side cable 26A connected.
- the lock mechanism 17A of the left front side door 17 is unlocked, and the left front side door 17 and the left rear side door 16 are moved to the open position.
- the heat exchanger chamber 12 is opened, and the first antenna holder 30 appears.
- the fitting hole 24A of the first antenna device 24 removed from the first antenna fixture 25 is fitted into the protruding member 30B of the first antenna holder 30. .. Thereby, the first antenna device 24 can be stably held by the first antenna holder 30 in the heat exchanger chamber 12.
- the intermediate portion of the antenna side cable 26A connected to the first antenna device 24 is inserted into the notch groove 31 formed in the left end edge 20B of the top cover 20.
- the left rear side door 16 can be moved to the closed position and the heat exchanger chamber 12 can be closed without sandwiching the antenna side cable 26A between the left end edge 20B of the top cover 20 and the left rear side door 16. can.
- the cable protector 32 is attached to the intermediate portion of the antenna side cable 26A, as shown in FIG. 9, the constricted portion 32B of the cable protector 32 is engaged with the notch groove 31.
- the antenna side cable 26A can be positioned with respect to the top cover 20 in a state where the antenna side cable 26A is prevented from rubbing against the notch groove 31 of the top cover 20.
- the left rear side door 16 is moved to the closed position, the left front side door 17 is moved to the closed position, and the lock mechanism 17A of the left front side door 17 is locked.
- the first antenna device 24 held by the first antenna holder 30 can be accommodated in the heat exchanger chamber 12 closed by the locked left rear side door 16. Therefore, it is possible to prevent the first antenna device 24 from being damaged or the first antenna device 24 from being stolen by a stepping stone during work when the first antenna device 24 is not used.
- the second antenna device 27 is removed from the support mast 28B of the second antenna fixture 28 with one end 29C of the antenna side cable 29A connected.
- the lock mechanism 19A of the right side door 19 is unlocked, and the right side door 19 is moved to the open position.
- the pump chamber 13 is opened and the second antenna holder 33 appears.
- the second antenna device 27 removed from the second antenna attachment 28 is fitted to the protruding member (not shown) of the second antenna holder 33.
- the second antenna device 27 can be stably held by the second antenna holder 33 in the pump chamber 13.
- the intermediate portion of the antenna side cable 29A connected to the second antenna device 27 is inserted into the notch groove 34 formed in the right end edge 20C of the top cover 20.
- the pump chamber 13 can be closed by moving the right side door 19 to the closed position without sandwiching the antenna side cable 29A between the right end edge 20C of the top cover 20 and the right side door 19.
- the cable protector 32 attached to the intermediate portion of the antenna side cable 29A is engaged with the notch groove 34.
- the antenna side cable 29A can be positioned with respect to the top cover 20 in a state where the antenna side cable 29A is prevented from rubbing against the notch groove 34 of the top cover 20.
- the lock mechanism 19A of the right side door 19 is locked.
- the second antenna device 27 held by the second antenna holder 33 can be accommodated in the pump chamber 13 closed by the locked right side door 19. Therefore, it is possible to prevent the second antenna device 27 from being damaged or the second antenna device 27 from being stolen by a stepping stone during work when the second antenna device 27 is not used.
- the first antenna device 24 is removed from the first antenna fixture 25 with the antenna side cable 26A connected to the heat exchanger room. It can be accommodated in the 12 and can be taken out from the heat exchanger chamber 12 and attached to the first antenna fixture 25.
- the second antenna device 27 can be removed from the second antenna fixture 28 and accommodated in the pump chamber 13 with the antenna side cable 29A still connected, and can be accommodated in the pump chamber 13 from the pump chamber 13. It can be taken out and attached to the second antenna fixture 28.
- the work of connecting and detaching the antenna side cable 26A to the first antenna device 24 becomes unnecessary. ..
- the second antenna device 27 is attached to and detached from the second antenna fixture 28, it is not necessary to connect the antenna side cable 29A to the second antenna device 27 and remove it.
- FIGS. 11 and 12 show the cable protector 35 according to the second embodiment.
- the cable protector 35 is used in the present embodiment in place of the cable protector 32 according to the first embodiment.
- the cable protector 35 is an antenna connected between the antenna side cable 26A connected to the first antenna device 24 and the notch groove 31 of the top cover 20 and to the second antenna device 27. It is provided between the side cable 29A and the notch groove 34 of the top cover 20.
- the cable protector 35 is made of a C-shaped body attached to the notch grooves 31 and 34, and is formed by using an elastic material such as rubber. That is, the cable protector 35 is formed in a C shape as a whole by providing a notch 35C in the radial direction with respect to the annular body having the cable insertion hole 35A on the inner peripheral side and the constricted portion 35B formed on the outer peripheral side. Has been done.
- the cable protector 35 is previously attached to the notch groove 31 by engaging the constricted portion 35B with the notch groove 31 of the top cover 20. Therefore, when the first antenna device 24 is housed in the heat exchanger chamber 12, the cable protector 35 in which the intermediate portion of the antenna side cable 26A connected to the first antenna device 24 is previously attached to the notch groove 31. The cable can be inserted into the cable insertion hole 35A from the side through the notch 35C (see FIG. 12). Similarly, when the second antenna device 27 is housed in the pump chamber 13, the intermediate portion of the antenna side cable 29A connected to the second antenna device 27 is inserted into the cable protector 35 previously attached to the notch groove 34. It can be inserted into the cable insertion hole 35A from the lateral direction through the notch 35C.
- the cable protector 35 is provided between the antenna side cable 26A and the notch groove 31, and the antenna side cable 29A and the notch groove 34 are provided. Workability can be improved when the cable protector 35 is provided between the cable protector 35 and the cable protector 35.
- the upper swing body 3 of the hydraulic excavator 1 is provided in the building cover 11, and the first and second antenna devices are removed from the first and second antenna fixtures 25 and 28.
- the first is provided in an antenna accommodating chamber (heat exchanger chamber 12, pump chamber 13) accommodating 24, 27 with antenna side cables 26A, 29A connected, and in the heat exchanger chamber 12, pump chamber 13.
- the building cover 11 is provided with the first and second antenna holders 30 and 33 for holding the first and second antenna devices 24 and 27 removed from the second antenna fixtures 25 and 28. It covers the heat exchanger chamber 12 and the pump chamber 13 so as to be openable and closable, and includes the heat exchanger chamber 12, the left rear side door 16 that can be locked with the pump chamber 13 closed, and the right side door 19. ..
- the first antenna device 24 can be removed from the first antenna fixture 25 and accommodated in the heat exchanger chamber 12 with the antenna side cable 26A still connected. Moreover, it can be taken out from the heat exchanger chamber 12 and attached to the first antenna fixture 25. Further, the second antenna device 27 can be removed from the second antenna fixture 28 and accommodated in the pump chamber 13 while the antenna side cable 29A is still connected, and is taken out from the pump chamber 13. Can be attached to the second antenna fixture 28.
- the first and second antenna devices 24 and 27 are housed in the heat exchanger chamber 12 and the pump chamber 13 on the upper surface cover 20, the left rear side door 16, and the right side door 19, the antenna side. Cable insertion portions (notch grooves 31, 34) through which the cables 26A and 29A are inserted are provided.
- the heat exchanger chamber 12 accommodating the first antenna device 24 is closed by the left rear side door 16 without sandwiching the antenna side cable 26A between the top cover 20 and the left rear side door 16. can do.
- the pump chamber 13 accommodating the second antenna device 27 can be closed by the right side door 19 without sandwiching the antenna side cable 29A between the top cover 20 and the right side door 19.
- the cable insertion portion is provided on the upper surface cover 20, the left rear side surface door 16, the upper surface cover 20 or the right side door 19 with the left rear side door 16 and the right side door 19 closed, and the end portion thereof is provided. It is formed by cutout grooves 31 and 34 having open ends 31A and 34A. According to this configuration, the antenna side cables 26A and 29A are inserted into the notch grooves 31 and 34 from the lateral direction through the opening ends 31A and 34A with the left rear side door 16 and the right side door 19 open. Therefore, it is possible to prevent the antenna side cables 26A and 29A from being pinched between the upper surface cover 20, the left rear side door 16, and the right side door 19.
- the antenna side cables 26A, 29A or the notch grooves 31, 34 are fitted into the notch grooves 31, 34, and the antenna side cables are inserted into the notch grooves 31, 34 when the antenna side cables 26A, 29A are inserted into the notch grooves 31, 34.
- a cable protector 32 for protecting 26A and 29A is provided. According to this configuration, the cable protector 32 can prevent the antenna-side cables 26A and 29A from being rubbed and damaged by the notch grooves 31 and 34.
- the cable protector 32 is composed of an annular body attached to the antenna side cables 26A and 29A, and the antenna side cables 26A and 29A are inserted through the inner peripheral side of the cable protector 32 from the axial direction.
- the outer peripheral side of the 32 is fitted in the notch grooves 31 and 34. According to this configuration, the cable protector 32 can be attached to the antenna side cables 26A and 29A in advance, and the cable protector 32 can be attached to the notch grooves 31 and 34.
- the cable protector 35 is composed of a C-shaped body attached to the notch grooves 31 and 34, and the antenna side cables 26A and 29A are inserted in the inner peripheral side of the cable protector 35 from the radial direction to protect the cable.
- the outer peripheral side of the tool 35 is fitted in the notch grooves 31 and 34. According to this configuration, the antenna side cables 26A and 29A can be inserted through the inner peripheral side of the cable protector 35 with the cable protector 35 attached in advance to the notch grooves 31 and 34.
- a heat exchanger chamber 12 for accommodating the heat exchanger 9 mounted on the upper swivel body 3 is provided in the building cover 11, and the antenna accommodating chamber is formed by the heat exchanger chamber 12. There is. According to this configuration, the heat exchanger chamber 12 can be utilized to accommodate the first antenna device 24.
- the first antenna holder 30 is attached to the left rear support member 15A that supports the building cover 11, and the first antenna holder 30 is the first when the first antenna device 24 is held.
- the antenna device 24 is provided at a position that does not overlap with the heat exchanger 9 with respect to the flow direction of the cooling air supplied to the heat exchanger 9. According to this configuration, the cooling air supplied to the heat exchanger 9 can be suppressed from being obstructed by the first antenna device 24, and sufficient cooling air can be supplied to the heat exchanger 9.
- a partition member 14 for partitioning an engine chamber for accommodating an engine 7 mounted on an upper swing body 3 and a pump chamber 13 for accommodating a hydraulic pump 8 is provided in a building cover 11, and the antenna accommodating chamber is provided. Is formed by the pump chamber 13, and the second antenna holder 33 is provided on the partition member 14. According to this configuration, the second antenna holder 33 can be arranged in the pump chamber 13 by using the partition member 14.
- the antenna device includes a first antenna device 24 arranged on one side of the upper swing body 3 in the left-right direction and a second antenna device arranged on the other side of the upper swing body 3 in the left-right direction.
- the antenna accommodating chamber is composed of a first antenna accommodating chamber accommodating a first antenna device 24 and a second antenna accommodating chamber accommodating a second antenna device 27.
- the antenna accommodating chamber 1 is formed by the heat exchanger chamber 12, and the second antenna accommodating chamber is formed by the pump chamber 13. According to this configuration, the first and second antenna devices 24 and 27 provided on the upper swing body 3 apart from each other in the left-right direction are individually housed by using the heat exchanger chamber 12 and the pump chamber 13. be able to.
- the first antenna device 24 has a fitting hole 24A that fits into the first antenna fitting 25 attached to the upper swing body 3, and the first antenna holder 30 has a rear left.
- the base member 30A fixed to the support member 15A and the projecting member 30B attached to the base member 30A and projecting upward to which the fitting hole 24A of the first antenna device 24 fits are included. According to this configuration, the first antenna device 24 removed from the first antenna attachment 25 can be stably held by the first antenna holder 30.
- notch grooves 31 and 34 as the cable insertion portion are formed in the upper surface cover 20 of the building cover 11 .
- the present invention is not limited to this, and for example, a notch groove 31 may be formed in the left rear side door 16 and a notch groove 34 may be formed in the right side door 19.
- the case where the first antenna holder 30 is attached to the left rear support member 15A is illustrated, but the configuration may be such that the first antenna holder 30 is attached to the left intermediate support member 15B, for example.
- the case where the second antenna holder 33 is attached to the partition member 14 is illustrated, but the configuration may be such that the second antenna holder 33 is attached to the right support member 18, for example.
- the hydraulic excavator 1 provided with the crawler type lower traveling body 2 has been described as an example.
- the present invention is not limited to this, and may be applied to a hydraulic excavator provided with a wheel-type lower traveling body.
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
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- Fittings On The Vehicle Exterior For Carrying Loads, And Devices For Holding Or Mounting Articles (AREA)
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Abstract
Description
2 下部走行体(車体)
3 上部旋回体(車体)
4 作業装置
5 旋回フレーム(車体フレーム)
8 油圧ポンプ
9 熱交換器
11 建屋カバー
12 熱交換器室(第1のアンテナ収容室)
13 ポンプ室(第2のアンテナ収容室)
14 仕切部材
15A 左後サポート部材(サポート部材)
16 左後側面ドア
19 右側面ドア
24 第1のアンテナ装置
24A 嵌合穴
25 第1のアンテナ取付具
26 第1のケーブル
27 第2のアンテナ装置
28 第2のアンテナ取付具
29 第2のケーブル
30 第1のアンテナ保持具
30A ベース部材
30B 突出部材
31,34 切欠溝(ケーブル挿通部)
31A,34A 開口端
32,35 ケーブル保護具
33 第2のアンテナ保持具
33A ベース部材
Claims (11)
- 自走可能な車体と、前記車体の前側に設けられた作業装置とからなり、
前記車体は、車体フレームと、
前記車体フレームに設けられた建屋カバーと、
前記車体に設けられたアンテナ取付具と、
前記アンテナ取付具に脱着可能に取付けられ、ケーブルを介してコントローラに接続されたアンテナ装置とを備えてなる建設機械において、
前記車体は、前記建屋カバー内に設けられ、前記アンテナ取付具から取外された前記アンテナ装置を前記ケーブルが接続された状態で収容するアンテナ収容室と、
前記アンテナ収容室内に設けられ、前記アンテナ取付具から取外された前記アンテナ装置を保持するアンテナ保持具とを備え、
前記建屋カバーは、前記アンテナ収容室を開閉可能に覆うと共に、前記アンテナ収容室を閉じた状態で施錠可能なドアを含んで構成されていることを特徴とする建設機械。 - 前記建屋カバーまたは前記ドアには、前記アンテナ装置が前記アンテナ収容室に収容された際に前記ケーブルが挿通されるケーブル挿通部が設けられていることを特徴とする請求項1に記載の建設機械。
- 前記ケーブル挿通部は、前記ドアが閉じた状態で前記建屋カバーまたは前記ドアに設けられた端部が開口端となった切欠溝により形成されていることを特徴とする請求項2に記載の建設機械。
- 前記ケーブルまたは前記切欠溝には、前記切欠溝に嵌合され、前記ケーブルが前記切欠溝に挿通されたときに前記ケーブルを保護するケーブル保護具が設けられていることを特徴とする請求項3に記載の建設機械。
- 前記ケーブル保護具は、前記ケーブルに取付けられる環状体からなり、
前記ケーブル保護具の内周側には軸方向から前記ケーブルが挿通され、前記ケーブル保護具の外周側は前記切欠溝に嵌合されることを特徴とする請求項4に記載の建設機械。 - 前記ケーブル保護具は、前記切欠溝に取付けられるC字状体からなり、
前記ケーブル保護具の内周側には径方向から前記ケーブルが挿通され、前記ケーブル保護具の外周側は前記切欠溝に嵌合されることを特徴とする請求項4に記載の建設機械。 - 前記建屋カバー内には、前記車体に搭載された熱交換器を収容する熱交換器室が設けられ、
前記アンテナ収容室は、前記熱交換器室により形成されていることを特徴とする請求項1に記載の建設機械。 - 前記アンテナ保持具は、前記建屋カバーを支持するサポート部材に取付けられ、
前記アンテナ保持具は、前記アンテナ装置を保持したときに前記アンテナ装置が前記熱交換器に供給される冷却風の流れ方向に対して前記熱交換器と重ならない位置に設けられていることを特徴とする請求項7に記載の建設機械。 - 前記建屋カバー内には、前記車体に搭載された原動機を収容する原動機室と油圧ポンプを収容するポンプ室とを仕切る仕切部材が設けられ、
前記アンテナ収容室は、前記ポンプ室により形成され、
前記アンテナ保持具は、前記仕切部材に設けられていることを特徴とする請求項1に記載の建設機械。 - 前記アンテナ装置は、前記車体の左右方向の一側に配置される第1のアンテナ装置と、前記車体の左右方向の他側に配置される第2のアンテナ装置とにより構成され、
前記アンテナ収容室は、前記第1のアンテナ装置を収容する第1のアンテナ収容室と、前記第2のアンテナ装置を収容する第2のアンテナ収容室とにより構成され、
前記第1のアンテナ収容室は、前記車体に搭載された熱交換器を収容するために前記建屋カバー内に設けられた熱交換器室により形成され、
前記第2のアンテナ収容室は、前記車体に搭載された油圧ポンプを収容するために前記建屋カバー内に設けられたポンプ室により形成されていることを特徴とする請求項1に記載の建設機械。 - 前記アンテナ装置は、前記車体に取付けられた前記アンテナ取付具に嵌合する嵌合穴を有し、
前記アンテナ保持具は、前記車体に固定されたベース部材と、
前記ベース部材に取付けられて上向きに突出し、前記アンテナ装置の前記嵌合穴が嵌合する突出部材とを含んで構成されていることを特徴とする請求項1に記載の建設機械。
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CN202180055081.3A CN116234721A (zh) | 2020-12-10 | 2021-11-10 | 工程机械 |
EP21903090.5A EP4186753A1 (en) | 2020-12-10 | 2021-11-10 | Construction machine |
US18/025,246 US20240026641A1 (en) | 2020-12-10 | 2021-11-10 | Construction machine |
JP2022568121A JP7339454B2 (ja) | 2020-12-10 | 2021-11-10 | 建設機械 |
KR1020237008128A KR20230047175A (ko) | 2020-12-10 | 2021-11-10 | 건설 기계 |
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Citations (6)
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JP2002322676A (ja) * | 2001-04-26 | 2002-11-08 | Komatsu Ltd | 建設機械のアンテナ装置 |
JP2008038438A (ja) * | 2006-08-04 | 2008-02-21 | Shin Caterpillar Mitsubishi Ltd | 作業機械 |
JP2012219516A (ja) * | 2011-04-08 | 2012-11-12 | Hitachi Constr Mach Co Ltd | 建設機械用キャブ |
JP5315481B1 (ja) * | 2012-11-13 | 2013-10-16 | 株式会社小松製作所 | 油圧ショベル |
JP2015021320A (ja) | 2013-07-22 | 2015-02-02 | キャタピラー エス エー アール エル | 建設機械におけるgpsアンテナ装置 |
JP2020007700A (ja) * | 2018-07-02 | 2020-01-16 | ヤンマー株式会社 | 旋回作業車 |
-
2021
- 2021-11-10 WO PCT/JP2021/041287 patent/WO2022123986A1/ja active Application Filing
- 2021-11-10 KR KR1020237008128A patent/KR20230047175A/ko unknown
- 2021-11-10 US US18/025,246 patent/US20240026641A1/en active Pending
- 2021-11-10 EP EP21903090.5A patent/EP4186753A1/en active Pending
- 2021-11-10 JP JP2022568121A patent/JP7339454B2/ja active Active
- 2021-11-10 CN CN202180055081.3A patent/CN116234721A/zh active Pending
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2002322676A (ja) * | 2001-04-26 | 2002-11-08 | Komatsu Ltd | 建設機械のアンテナ装置 |
JP2008038438A (ja) * | 2006-08-04 | 2008-02-21 | Shin Caterpillar Mitsubishi Ltd | 作業機械 |
JP2012219516A (ja) * | 2011-04-08 | 2012-11-12 | Hitachi Constr Mach Co Ltd | 建設機械用キャブ |
JP5315481B1 (ja) * | 2012-11-13 | 2013-10-16 | 株式会社小松製作所 | 油圧ショベル |
JP2015021320A (ja) | 2013-07-22 | 2015-02-02 | キャタピラー エス エー アール エル | 建設機械におけるgpsアンテナ装置 |
JP2020007700A (ja) * | 2018-07-02 | 2020-01-16 | ヤンマー株式会社 | 旋回作業車 |
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US20240026641A1 (en) | 2024-01-25 |
KR20230047175A (ko) | 2023-04-06 |
JPWO2022123986A1 (ja) | 2022-06-16 |
JP7339454B2 (ja) | 2023-09-05 |
CN116234721A (zh) | 2023-06-06 |
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