WO2019003266A1 - 建設機械 - Google Patents
建設機械 Download PDFInfo
- Publication number
- WO2019003266A1 WO2019003266A1 PCT/JP2017/023373 JP2017023373W WO2019003266A1 WO 2019003266 A1 WO2019003266 A1 WO 2019003266A1 JP 2017023373 W JP2017023373 W JP 2017023373W WO 2019003266 A1 WO2019003266 A1 WO 2019003266A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- cab
- antenna
- disposed
- construction machine
- engine
- Prior art date
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Classifications
-
- 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
- H01Q1/3291—Adaptation for use in or on road or rail vehicles characterised by the location of the antenna on the vehicle mounted in or on other locations inside the vehicle or vehicle body
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/08—Superstructures; Supports for superstructures
- E02F9/0858—Arrangement of component parts installed on superstructures not otherwise provided for, e.g. electric components, fenders, air-conditioning units
- E02F9/0891—Lids or bonnets or doors or details thereof
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/16—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
- E02F9/26—Indicating devices
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/12—Supports; Mounting means
- H01Q1/1207—Supports; Mounting means for fastening a rigid aerial element
-
- 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
- H01Q1/3208—Adaptation for use in or on road or rail vehicles characterised by the application wherein the antenna is used
- H01Q1/3233—Adaptation for use in or on road or rail vehicles characterised by the application wherein the antenna is used particular used as part of a sensor or in a security system, e.g. for automotive radar, navigation systems
-
- 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
- H01Q1/3275—Adaptation for use in or on road or rail vehicles characterised by the location of the antenna on the vehicle mounted on a horizontal surface of the vehicle, e.g. on roof, hood, trunk
-
- 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
-
- 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
- E02F3/32—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 working downwardly and towards the machine, e.g. with backhoes
- E02F3/325—Backhoes of the miniature type
Definitions
- the present invention relates to a construction machine.
- GNSS Global Navigation Satellite System
- a construction machine When a construction machine includes a plurality of antennas for satellite positioning signal reception, it is required to arrange the antennas as far apart as possible in the left-right direction in order to improve the positioning accuracy.
- the area of the body frame is small.
- the vehicle body frame on the rear side of the vehicle body is formed in an arc shape centered on the turning center when viewed from above, so the area of the vehicle body frame on the rear side of the vehicle body is particularly small. Therefore, it is difficult to arrange a plurality of antennas apart from each other.
- An object of the present invention is to provide a construction machine capable of appropriately arranging a plurality of antennas for receiving satellite positioning signals.
- the construction machine includes a vehicle body, a cab mounted on the vehicle body, and a plurality of satellite positioning signal reception antennas including a first antenna and a second antenna.
- the first antenna is attached to the cab.
- the second antenna is attached to the vehicle body without passing through the cab.
- a plurality of antennas for satellite positioning signal reception can be appropriately arranged.
- the rear swing type hydraulic excavator 1 is described as an example of a construction machine, but the concept of the embodiment can be applied to other types of construction machines.
- FIG. 1 is a side view schematically showing a configuration of a hydraulic shovel 1 based on the embodiment.
- FIG. 2 is a plan view of the hydraulic shovel 1 shown in FIG.
- FIG. 3 is a rear view of the hydraulic shovel 1 shown in FIG.
- FIG. 4 is a perspective view of the hydraulic shovel 1 shown in FIG. 1 as viewed from the right rear.
- the hydraulic shovel 1 of the present embodiment mainly includes a traveling body 2, a swing body 3 and a work implement 4.
- the traveling body 2 and the swing body 3 constitute a vehicle body of the hydraulic shovel 1.
- the traveling body 2 has a pair of left and right crawler belts 2A.
- the hydraulic shovel 1 is configured to be capable of self-propelled by rotationally driving the pair of left and right crawler belts 2A.
- the swing body 3 is rotatably installed with respect to the traveling body 2.
- the revolving unit 3 mainly has a cab 5, an exterior panel 6, and a counterweight 7.
- the cab 5 is disposed on the front left side (front side of the vehicle) of the revolving unit 3.
- the cab 5 is mounted on the vehicle body of the hydraulic shovel 1.
- An operator's cab is formed inside the cab 5.
- the operator's cab is a space for the operator to operate the hydraulic shovel 1.
- a driver's seat for the operator to sit is disposed in the driver's cab.
- the boom 4A of the work implement 4 rotationally moves about the boom pin with respect to the swing body 3.
- a specific portion of the boom 4A that rotates with respect to the revolving structure 3, for example, a locus along which the tip of the boom 4A moves is arc-shaped, and a plane including the arc is identified.
- the plane is represented as a straight line.
- the direction in which this straight line extends is the front-rear direction of the vehicle body, or the front-rear direction of the revolving unit 3, and hereinafter, it is also simply referred to as the front-rear direction.
- the left-right direction (vehicle width direction) of the vehicle body or the left-right direction of the revolving structure 3 is a direction orthogonal to the front-rear direction in a plan view, and hereinafter also referred to simply as the left-right direction.
- the left-right direction refers to the direction in which the boom pin extends.
- the vertical direction of the vehicle body or the vertical direction of the revolving unit 3 is a direction orthogonal to a plane defined by the front-rear direction and the left-right direction, and hereinafter, it is also simply referred to as the vertical direction.
- the side where the work implement 4 protrudes from the vehicle body is the front direction
- the direction opposite to the front direction is the rear direction.
- the right and left sides in the left and right direction are the right direction and the left direction, respectively.
- Lower side the side where the ground in the vertical direction, the side where the air is above.
- the front-rear direction is the front-rear direction of the operator seated at the driver's seat in the cab 5.
- the left-right direction is the left-right direction of the operator seated at the driver's seat.
- the vertical direction is the vertical direction of the operator seated at the driver's seat.
- the direction facing the operator seated on the driver's seat is the front direction, and the direction behind the operator seated on the driver's seat 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 at the driver's seat is the lower side, and the upper side is the upper side.
- the exterior panel 6 has an engine hood 6A, a soil cover 6B, and a sheet metal cover 6C.
- the engine hood 6A, the earth and sand cover 6B and the sheet metal cover 6C constitute a part of the upper surface of the revolving unit 3.
- the engine hood 6A constitutes an upper surface of the revolving unit 3 on the rear side of the cab 5.
- the earth and sand cover 6 ⁇ / b> B and the sheet metal cover 6 ⁇ / b> C constitute a part of the upper surface of the swing body 3 on the right side of the cab 5.
- the sheet metal cover 6C constitutes a right rear corner portion of a portion of the upper surface of the swing body 3 excluding the engine hood 6A.
- the earth and sand cover 6B is disposed on the left side and the front side with respect to the sheet metal cover 6C.
- the engine hood 6A and the soil cover 6B are formed of a lightweight resin material.
- the upper surface of the hydraulic shovel 1 behind the cab 5 is made of a resin material.
- the sheet metal cover 6C is formed of a metal material such as a steel material.
- the front edge of the engine hood 6A extends in the left-right direction.
- the engine hood 6A is configured to be rotatable relative to the revolving unit 3 with its front edge as a fulcrum.
- the engine hood 6A is configured to be able to open and close with respect to the vehicle body of the hydraulic shovel 1. As engine hood 6A rotates and moves upward, engine room 14 is opened. As the engine hood 6A moves downward, the engine compartment 14 is covered by the engine hood 6A and is not exposed to the outside.
- the engine hood 6A is configured to be able to open and close the engine compartment 14.
- FIG. 5 is a perspective view of the engine hood 6A and the soil cover 6B in the open state. When the engine hood 6A is opened, the engine compartment 14 is exposed. In FIG. 5, the components housed in the housing space covered by the earth and sand cover 6 ⁇ / b> B and in the engine room 14, such as the engine 12 and the fuel tank, are not shown.
- the engine hood 6A and the earth and sand cover 6B movable relative to the revolving unit 3 are formed of a lightweight resin material, a worker who attempts to open and close the engine hood 6A and the earth and sand cover 6B needs special equipment. It is possible to open and close manually. Since the engine hood 6A and the earth and sand cover 6B are resin molded products and can be easily formed into a desired shape, the design of the external appearance of the hydraulic shovel 1 is improved.
- the sheet metal cover 6C covers the accommodation space for accommodating the main valve and the like from the upper side and the right side.
- the sheet metal cover 6 ⁇ / b> C is fixed to the revolving unit 3. After the sheet metal cover 6C is fixed to the swing body 3 at the time of assembly of the hydraulic shovel 1, the sheet metal cover 6C can not move relative to the swing body 3.
- the earth and sand cover 6B and the sheet metal cover 6C are disposed in front of the engine hood 6A.
- the earth and sand cover 6B and the sheet metal cover 6C are disposed in front of the front edge of the engine hood 6A. Since the engine hood 6A covers the engine 12 from above, the earth and sand cover 6B and the sheet metal cover 6C are disposed in front of the engine 12.
- Each of the engine hood 6A and the counterweight 7 is disposed on the rear side (vehicle rear side) of the revolving unit 3.
- the engine hood 6A is disposed to cover the upper side and the rear side of the engine compartment 14.
- an engine unit (the engine 12, an exhaust treatment unit, etc.) is accommodated.
- the engine hood 6A is disposed above the engine 12.
- the engine hood 6A is formed with an opening 6A1 in which a part of the engine hood 6A is cut out.
- An exhaust cylinder 8 for discharging the exhaust gas of the engine 12 to the atmosphere protrudes above the engine hood 6A via the opening 6A1.
- the counterweight 7 is disposed at the rear of the engine compartment in order to balance the main body of the hydraulic shovel 1 at the time of mining and the like.
- the hydraulic shovel 1 is formed as a small swing type hydraulic shovel in which the turning radius of the rear surface is reduced. Therefore, the rear surface of the counterweight 7 in plan view is formed in an arc shape centered on the turning center of the turning body 3 as viewed from above.
- the earth and sand cover 6B and the sheet metal cover 6C are disposed on the right side of the revolving unit 3.
- the earth and sand cover 6B and the sheet metal cover 6C are provided on the right side of the work machine 4.
- the work machine 4 is for carrying out work such as excavation of earth and sand.
- the work implement 4 is attached to the front side of the swing body 3.
- Work implement 4 has, for example, boom 4A, arm 4B, bucket 4C, hydraulic cylinders 4D, 4E, 4F and the like.
- the work implement 4 can be driven by driving each of the boom 4A, the arm 4B and the bucket 4C by the hydraulic cylinders 4F, 4E, 4D.
- the base end of the boom 4A is connected to the swing body 3 via a boom pin.
- the boom 4A is attached to the pivoting body 3 so as to be rotatable in both directions with respect to the pivoting body 3 around the boom pin.
- the boom 4A is operable in the vertical direction.
- the proximal end of the arm 4B is connected to the distal end of the boom 4A via an arm pin.
- the arm 4B is attached to the boom 4A so as to be rotatable in both directions with respect to the boom 4A about an arm pin.
- the bucket 4C is connected to the tip of the arm 4B via a bucket pin.
- the bucket 4C is attached to the arm 4B so as to be rotatable in both directions with respect to the arm 4B about a bucket pin.
- the work implement 4 is provided on the right side of the cab 5.
- the arrangement of the cab 5 and the working machine 4 is not limited to the example shown in FIGS. 1 and 2.
- the working machine 4 is provided on the left side of the cab 5 disposed on the front right side of the revolving unit 3 It is also good.
- the cab 5 includes a roof portion arranged to cover the driver's seat and a plurality of pillars supporting the roof portion.
- Each pillar has a lower end connected to the floor of cab 5 and an upper end connected to the roof portion of cab 5.
- the plurality of pillars have a front pillar 40 and a rear pillar.
- the front pillar 40 is disposed at a corner of the cab 5 in front of the driver's seat.
- the rear pillar is disposed at the corner of the cab 5 behind the driver's seat.
- the front pillar 40 has a right pillar 41 and a left pillar 42.
- the right pillar 41 is disposed at the front right corner of the cab 5.
- the left pillar 42 is disposed at the front left corner of the cab 5.
- the working machine 4 is disposed on the right side of the cab 5.
- the right pillar 41 is disposed closer to the work implement 4.
- the left pillar 42 is disposed on the side away from the work implement 4.
- a space surrounded by the right pillar 41, the left pillar 42, and the pair of rear pillars forms an indoor space of the cab 5.
- the driver's seat is accommodated in the indoor space of the cab 5.
- the left side surface of the cab 5 is provided with a door for the operator to get on and off the cab 5.
- a front window 47 is disposed between the right pillar 41 and the left pillar 42.
- the front window 47 is disposed in front of the driver's seat.
- the front window 47 is formed of a transparent material.
- An operator seated at the driver's seat can visually recognize the front outside of the cab 5 through the front window 47.
- an operator seated at the driver's seat can directly view, through the front window 47, a bucket 4C excavating earth and sand, a current topography to be constructed, and the like.
- the cab 5 has an upper surface 5A that constitutes the upper outer surface of the cab 5 and a rear surface 5B that constitutes the rear outer surface of the cab 5.
- the upper surface 5A constitutes a roof portion of the cab 5.
- a part of the rear surface 5B is constituted by the rear window 48.
- the rear window 48 is disposed rearward of the driver's seat.
- the rear window 48 is formed of a transparent material. The operator can view the rear outside of the cab 5 through the rear window 48.
- a pair of antennas 9 is attached to the revolving unit 3.
- the pair of antennas 9 is provided on the upper surface of the revolving unit 3.
- the antenna 9 is an antenna for GNSS.
- the antenna 9 is an antenna for satellite positioning signal reception.
- the pair of antennas 9 has a main antenna 9A and a sub antenna 9B.
- the main antenna 9A and the sub antenna 9B are disposed on the rear side of the revolving unit 3 at an interval in the left-right direction.
- the main antenna 9 ⁇ / b> A is disposed on the left side of the revolving unit 3
- the sub antenna 9 ⁇ / b> B is disposed on the right side of the revolving unit 3.
- the main antenna 9A and the sub antenna 9B are arranged in a position where they do not protrude from the rotating body 3 in a plan view.
- the main antenna 9A and the sub antenna 9B are disposed within the turning radius of the turning body 3.
- the main antenna 9A is attached to the cab 5.
- the main antenna 9A is attached to the cab 5 via the bracket 10.
- the main antenna 9A is attached to the rear of the cab 5.
- the main antenna 9A is attached to the top of the cab 5.
- the main antenna 9A is disposed outside the cab 5.
- the main antenna 9A is not covered by the exterior cover of the cab 5.
- the main antenna 9A is disposed rearward of the rear surface 5B of the cab 5.
- the main antenna 9A is disposed in front of the counterweight 7.
- the main antenna 9A is disposed above the engine hood 6A.
- the main antenna 9A is disposed at a position overlapping the engine hood 6A in plan view.
- the main antenna 9A is not supported by the engine hood 6A and the soil cover 6B made of a resin material.
- the main antenna 9A is not attached to the engine hood 6A and the soil cover 6B which can be opened and closed with respect to the vehicle body of the hydraulic shovel 1.
- the main antenna 9A is disposed at a height position equal to or less than the upper surface 5A of the cab 5.
- the main antenna 9A is disposed below the top surface 5A of the cab 5.
- the main antenna 9A is disposed above the upper end of the driver's seat in the cab 5.
- the main antenna 9A is disposed at a position overlapping a portion of the rear window 48.
- the main antenna 9A overlaps a part near the upper edge portion of the rear window 48 when viewed in the front-rear direction.
- the upper edge of the rear window 48 is disposed at the same height as a portion of the main antenna 9A.
- the main antenna 9A is exposed upward.
- the main antenna 9A is disposed at a position where the rear surface 5B of the cab 5 does not become an obstacle that obstructs the sky view of the main antenna 9A.
- the main antenna 9A is arranged to secure a minimum altitude angle of 15 ° in order to receive radio waves from GNSS satellites.
- the sub antenna 9 ⁇ / b> B is attached to the vehicle body of the hydraulic shovel 1 without the cab 5.
- the sub antenna 9B is provided above the sheet metal cover 6C. In plan view, the sub antenna 9B overlaps the sheet metal cover 6C.
- the secondary antenna 9 B is supported by the mast 13.
- the mast 13 extends in the vertical direction.
- the mast 13 protrudes upward from the sheet metal cover 6C.
- the mast 13 penetrates the sheet metal cover 6C.
- the sub antenna 9 B is fixed to the upper end of the mast 13.
- the sub antenna 9B is exposed upward, and the sky view of the sub antenna 9B is secured.
- the sub antenna 9B is not supported by the engine hood 6A and the earth and sand cover 6B formed of a resin material.
- the sub antenna 9B is not attached to the engine hood 6A and the earth and sand cover 6B which can be opened and closed with respect to the vehicle body of the hydraulic shovel 1.
- the sub antenna 9B is disposed forward of the front edge of the engine hood 6A. Since the engine hood 6A covers the engine 12 from above, the sub antenna 9B is disposed in front of the engine 12. A hydraulic pump is directly connected to the engine 12. The engine hood 6A covers the machine room accommodating the hydraulic pump from above, and can open and close the machine room. The sub antenna 9B is disposed forward of the machine room that accommodates the hydraulic pump.
- the sub antenna 9 ⁇ / b> B is disposed in front of the counterweight 7.
- the sub antenna 9 ⁇ / b> B is disposed in front of the rear surface 5 ⁇ / b> B of the cab 5.
- the sub antenna 9B is disposed in front of the main antenna 9A.
- the rear surface 5B of the cab 5 is interposed between the main antenna 9A and the sub antenna 9B.
- the front edge of the engine hood 6A is interposed between the main antenna 9A and the sub antenna 9B.
- the trailing edge of the sheet metal cover 6C is interposed between the main antenna 9A and the sub antenna 9B.
- the sub antenna 9B is disposed at a height position lower than the top surface 5A of the cab 5.
- the sub antenna 9B is disposed at a lower height position than the main antenna 9A.
- the main antenna 9A overlaps the crawler belt 2A on the left side in plan view.
- the sub antenna 9B overlaps the crawler belt 2A on the right side in plan view.
- a mirror 11A is attached to the cab 5 via a stay 11B.
- the stay 11B is fixed to the rear surface 5B of the cab 5 and extends rearward from the rear surface 5B of the cab 5.
- the mirror 11A is attached to the tip of the stay 11B.
- the mirror 11A is disposed at the rear of the cab 5.
- the mirror 11A is disposed rearward of the rear surface of the cab 5.
- the mirror 11 ⁇ / b> A is disposed below the upper surface 5 ⁇ / b> A that constitutes the roof portion of the cab 5.
- FIG. 6 is an enlarged perspective view showing a support structure of the sub antenna 9B.
- the swing body 3 has a swing frame 50.
- the cab 5 and the work implement 4 not shown in FIG. 6, the engine 12 and the like are mounted on the swing frame 50 and arranged on the upper surface of the swing frame 50.
- FIG. 6 only a part of the components mounted on the swing frame 50 is shown.
- the exterior panel 6 including the engine hood 6A, the soil cover 6B and the sheet metal cover 6C is not shown in FIG.
- the revolving unit 3 has a partition plate 51.
- the partition plate 51 has a flat plate-like outline shape extending in the left-right direction and in the up-down direction.
- the partition plate 51 constitutes a front side wall of the engine compartment 14.
- the partition plate 51 partitions the cab 5 and the engine compartment 14 from each other.
- the engine compartment 14 is defined by being covered above and laterally by the engine hood 6A, the partition plate 51 and the counterweight 7.
- a pillar member 52 is provided at the right edge of the partition plate 51.
- the pillar members 52 extend in the vertical direction.
- the pillar member 52 has a lower end fixed to the upper surface of the revolving frame 50.
- the pillar member 52 supports the partition plate 51.
- the pillar member 52 is a member that constitutes a support structure for supporting the partition plate 51.
- a flat support 53 is fixed to the upper end of the column member 52.
- the support portion 53 is also fixed to the partition plate 51 directly or through another member.
- the support portion 53 has an upper surface to which the lower end portion of the mast 13 is fixed.
- the mast 13 has a fixing plate portion 13A at its lower end.
- the fixed plate portion 13A is fixed to the support portion 53 using a plurality of bolts.
- the mast 13 is fixed to the upper surface of the support portion 53 in a planar manner, whereby the mast 13 is firmly fixed to the support portion 53.
- the main body portion extending in the vertical direction of the mast 13 and the fixing plate portion 13A are connected by a rib portion 13B.
- the rib portion 13B By forming the rib portion 13B, the strength of the mast 13 is improved.
- the sub antenna 9 B is fixed to the tip (upper end) of the mast 13.
- the sub antenna 9 B is fixed to the partition plate 51 via the mast 13.
- the sub antenna 9 B is fixed to the pivot frame 50 via the mast 13 and the partition plate 51.
- the sub antenna 9 ⁇ / b> B is fixed to the revolving unit 3 without passing through the cab 5.
- the mast 13 is fixed to the swing body 3 with high strength, and the strength of the mast 13 itself is also enhanced, so that the positioning accuracy of the sub antenna 9B supported by the mast 13 with respect to the swing body 3 is improved. .
- FIG. 7 is an enlarged perspective view showing a support structure of the main antenna 9A.
- the bracket 10 has a fixing portion 10A.
- the fixing portion 10A has a substantially flat shape, and is fixed to the upper surface 5A of the cab 5 using a plurality of bolts.
- the bracket 10 has a fixing portion 10B.
- the fixing portion 10B has a substantially flat shape.
- the fixing portion 10B is connected to the rear edge of the fixing portion 10A.
- the fixing portion 10B has a shape bent with respect to the fixing portion 10A.
- the fixing portion 10B is bent with respect to the fixing portion 10A.
- the fixing portion 10B is bent downward from the fixing portion 10A.
- the fixing portion 10 ⁇ / b> B is disposed to face the rear surface 5 ⁇ / b> B of the cab 5.
- the fixing portion 10B is fixed to the rear surface 5B of the cab 5 using a bolt.
- the bracket 10 is firmly fixed by the cab 5 by the fixing portion 10A being fixed to the upper surface 5A of the cab 5 and the fixing portion 10B being fixed to the rear surface 5B of the cab 5.
- the fixing portion 10B is partially cut out to form a through hole.
- the stay 11B for attaching the mirror 11A is disposed through the through hole and fixed to the rear surface 5B of the cab 5.
- a hanger fixed to the rear surface 5B of the cab 5 and extending rearward from the rear surface 5B is disposed through a through hole formed in the fixing portion 10B.
- the bracket 10 has a mounting portion 10C.
- the mounting portion 10C is connected to the lower edge of the fixing portion 10B.
- the mounting portion 10C is disposed at a height position lower than the top surface 5A of the cab 5.
- the mounting portion 10C has a shape bent with respect to the fixing portion 10B.
- the mounting portion 10C is bent with respect to the fixing portion 10B.
- the mounting portion 10C is bent rearward from the fixing portion 10B.
- the strength of the bracket 10 is improved by forming the bracket 10 in a shape in which the plate material is bent a plurality of times.
- the fixing portion 10B and the mounting portion 10C are connected by a rib portion 10D.
- the rib portion 10D By forming the rib portion 10D, the strength of the bracket 10 is improved.
- the main antenna 9A is mounted on the upper surface of the mounting portion 10C.
- the main antenna 9A is fixed to the mounting portion 10C.
- the main antenna 9A has a fixing portion 9A1 fixed to the mounting portion 10C.
- the fixed portion 9A1 of the main antenna 9A is disposed at a height position lower than the top surface 5A of the cab 5.
- the main antenna 9A is attached to the cab 5 via the bracket 10.
- the fixing portion 9A1 of the main antenna 9A is fixed to the cab 5 via the mounting portion 10C of the bracket 10.
- the main antenna 9A is fixed to the revolving unit 3 via the bracket 10 and the cab 5.
- the bracket 10 is fixed to the cab 5 with high strength, and the strength of the bracket 10 itself is also enhanced, so that the positioning accuracy of the main antenna 9A supported by the bracket 10 with respect to the revolving unit 3 is improved.
- the main antenna 9A is attached to the cab 5, and the sub antenna 9B is attached to the vehicle body of the hydraulic excavator 1 without passing through the cab 5. .
- the main antenna 9A and the sub antenna 9B can be disposed at mutually separated positions in the left-right direction of the revolving unit 3. Therefore, the positioning accuracy of the current position of the hydraulic shovel 1 can be improved.
- the work implement 4 If the work implement 4 exists in the reception range of the main antenna 9A, the work implement 4 shields the radio signal that the main antenna 9A is to receive, and the main antenna 9A can not receive the radio wave, or the radio wave is reflected. As a result, the radio signal received by the main antenna 9A is disturbed.
- the hydraulic shovel 1 according to the embodiment is of the rear small turning type, the work implement 4 in the most raised state is disposed further to the rear of the turning body 3 in order to reduce the turning radius.
- the main antenna 9A is disposed on the rear side of the revolving unit 3 by attaching the main antenna 9A to the rear of the cab 5.
- the work implement 4 becomes a shield of the radio signal to the main antenna 9A. Since the influence which the working machine 4 exerts on the reception environment of the main antenna 9A can be suppressed to a low level, it is possible to suppress the decrease in the positioning accuracy of the current position of the hydraulic shovel 1.
- the cab 5 in order to prevent the cab 5 itself from being a shield of the radio wave signal with respect to the main antenna 9A attached to the cab 5, the cab 5 is not disposed within the reception range of the main antenna 9A. There is a need. Therefore, as shown in FIG. 4, by attaching the main antenna 9A to the upper part of the cab 5, it can be suppressed that the cab 5 becomes an obstacle that obstructs the sky view of the main antenna 9A. Since the influence exerted by the cab 5 on the reception environment of the main antenna 9A can be suppressed to a low level, it is possible to suppress the decrease in the positioning accuracy of the current position of the hydraulic shovel 1.
- the main antenna 9A by attaching the main antenna 9A to the upper portion of the cab 5, the window provided in the cab 5, for example, the rear window 48 is prevented from being blocked by the main antenna 9A. Therefore, it is possible to secure a direct view in which the operator in the cab of cab 5 looks at the outside of cab 5.
- the main antenna 9A has a fixed portion 9A1 fixed to the cab 5, and the fixed portion 9A1 is disposed at a height position lower than the upper surface 5A of the cab 5.
- the main antenna 9A can be disposed at a position relatively lower than the upper surface 5A of the cab 5.
- the main antenna 9A protrudes upward from the upper surface 5A of the cab 5 by arranging the main antenna 9A at a height position below the upper surface 5A of the cab 5, and the transport height of the hydraulic shovel 1 is increased. The situation beyond the limit can be reliably avoided.
- the main antenna 9 ⁇ / b> A is attached to the cab 5 via the bracket 10.
- the bracket 10 has a fixing portion 10A fixed to the upper surface 5A of the cab 5, and a fixing portion 10B and a mounting portion 10C extending rearward from the upper surface 5A of the cab 5 and bent downward.
- main antenna 9A By mounting main antenna 9A on mounting portion 10C located below upper surface 5A of cab 5, main antenna 9A can be reliably disposed at a height position equal to or lower than upper surface 5A of cab 5. .
- the main antenna 9A and the sub antenna 9B are disposed within the turning radius of the turning body 3, it is connected to the main antenna 9A or the sub antenna 9B or these antennas when turning the turning body 3 It can control that the used cables etc. contact a foreign object. Therefore, the reliability of the hydraulic shovel 1 can be improved.
- an engine hood 6A is configured on the upper surface of the hydraulic shovel 1 behind the cab 5, and the engine hood 6A is made of a resin material.
- the engine hood 6A can be shared by the hydraulic shovel 1 of the embodiment including the antenna 9 and the hydraulic shovel not including the antenna. Since it is not necessary to prepare a new mold for molding the engine hood 6A of the embodiment, the manufacturing cost of the hydraulic shovel 1 can be reduced.
- the sub antenna 9B in front of the engine 12, it is not necessary to change the shape of the engine hood 6A which covers the engine 12 from above. Since the engine hood 6A can be shared by the hydraulic shovel 1 of the embodiment including the antenna 9 and the hydraulic shovel not including the antenna, the manufacturing cost of the hydraulic shovel 1 can be reduced.
- the sheet metal cover 6C is formed of a metal material typified by a steel material, processing is easy.
- the mast 13 for supporting the sub antenna 9B can be disposed by partially cutting out the sheet metal cover 6C and penetrating the sheet metal cover 6C. Therefore, the sub antenna 9B can be easily attached to the revolving unit 3 by arranging the sub antenna 9B above the sheet metal cover 6C.
- the engine hood 6A can be opened and closed with respect to the revolving unit 3.
- the antenna 9 moves as the structure moves, which often requires calibration and is cumbersome.
- the main antenna 9A of the embodiment is attached to the cab 5, the sub antenna 9B of the embodiment is disposed in front of the engine compartment 14, and the main antenna 9A and the sub antenna 9B are not attached to the engine hood 6A. . Therefore, even if the engine hood 6A is moved to open and close the engine compartment 14, the main antenna 9A and the sub antenna 9B do not move, and there is no need for recalibration. Therefore, an increase in the frequency of calibration of the antenna 9 can be avoided, and the burden on the operator associated with the maintenance operation can be reduced.
- the bracket 10 includes the fixing portion 10A fixed to the upper surface 5A of the cab 5 and the fixing portion 10B fixed to the rear surface 5B of the cab 5.
- the bracket 10 may be fixed to only the rear surface 5 ⁇ / b> B of the cab 5 and extend rearward from the rear surface 5 ⁇ / b> B of the cab 5.
- the main antenna 9 ⁇ / b> A is not limited to the configuration fixed to the cab 5 via the bracket 10, and may be directly fixed to the cab 5.
- the example in which the entire main antenna 9A is disposed at a height position equal to or less than the upper surface 5A of the cab 5 has been described.
- the transportation height limit of the hydraulic shovel 1 is determined by the upper end portion of the structure.
- the transport height limit is not exceeded. Therefore, a portion of the main antenna 9A is located above the top surface 5A of the cab 5 It does not matter even if it is arranged.
- Reference Signs List 1 hydraulic excavator, 2 traveling body, 2A crawler belt, 3 revolving body, 4 working machines, 4A boom, 4B arm, 4C arm, 4C bucket, 4D, 4E, 4F hydraulic cylinder, 5 cabs, 5A upper surface, 5B rear surface, 6 exterior panel, 6A Engine hood, 6A1 opening, 6B earth and sand cover, 6C sheet metal cover, 7 counterweight, 8 exhaust cylinder, 9 antennas, 9A main antenna, 9A1 fixed part, 9B auxiliary antenna, 10 bracket, 10A, 10B fixed part, 10C mounting part, 10D, 13B rib portion, 11A mirror, 11B stay, 12 engine, 13 mast, 13A fixed plate portion, 14 engine room, 40 front pillar, 41 right pillar, 42 left pillar, 47 front window, 48 rear window, 50 turning frame , 51 partition plate, 52 Members, 53 support part.
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- Computer Security & Cryptography (AREA)
- Radar, Positioning & Navigation (AREA)
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Abstract
Description
作業機4のブーム4Aは、旋回体3に対して、ブームピンを中心に回転移動する。旋回体3に対して回動するブーム4Aの特定の部分、たとえばブーム4Aの先端部が移動する軌跡は円弧状であり、その円弧を含む平面が特定される。油圧ショベル1を平面視した場合に、当該平面は直線として表される。この直線の延びる方向が、車両本体の前後方向、または旋回体3の前後方向であり、以下では単に前後方向ともいう。車両本体の左右方向(車幅方向)、または旋回体3の左右方向とは、平面視において前後方向と直交する方向であり、以下では単に左右方向ともいう。左右方向とは、ブームピンの延びる方向をいう。車両本体の上下方向、または旋回体3の上下方向とは、前後方向および左右方向によって定められる平面に直交する方向であり、以下では単に上下方向ともいう。
実施形態に基づく油圧ショベル1によれば、図4に示すように、主アンテナ9Aはキャブ5に取り付けられており、副アンテナ9Bはキャブ5を介さずに油圧ショベル1の車体に取り付けられている。このように主アンテナ9Aおよび副アンテナ9Bを設置することにより、主アンテナ9Aと副アンテナ9Bとを、旋回体3の左右方向に互いに離れた位置に配置することができる。したがって、油圧ショベル1の現在位置の測位精度を向上することができる。
Claims (11)
- 車体と、
前記車体に載置されたキャブと、
第1アンテナと第2アンテナとを含む複数の衛星測位信号受信用のアンテナとを備え、
前記第1アンテナは前記キャブに取り付けられており、
前記第2アンテナは前記キャブを介さずに前記車体に取り付けられている、建設機械。 - 前記第1アンテナは、前記キャブの後部に取り付けられている、請求項1に記載の建設機械。
- 前記第1アンテナは、前記キャブの上部に取り付けられている、請求項1または2に記載の建設機械。
- 前記第1アンテナは、前記キャブに対して固定された固定部を有し、
前記固定部は、前記キャブの上面よりも低い高さ位置に配置されている、請求項3に記載の建設機械。 - 前記第1アンテナは、前記キャブの上面以下の高さ位置に配置されている、請求項3または4に記載の建設機械。
- 前記キャブの上面に固定され、前記キャブの前記上面から下方へ屈曲するブラケットをさらに備え、
前記第1アンテナは、前記ブラケットを介して前記キャブに取り付けられている、請求項3~5のいずれか1項に記載の建設機械。 - 前記建設機械は、後方小旋回型油圧ショベルであり、
前記建設機械は、走行体と、前記走行体に対して旋回可能な旋回体とを含み、
前記第1アンテナおよび前記第2アンテナは、前記旋回体の旋回半径内に配置されている、請求項1~6のいずれか1項に記載の建設機械。 - 前記キャブよりも後方の前記建設機械の上面は、樹脂材料で構成されている、請求項1~7のいずれか1項に記載の建設機械。
- エンジンをさらに備え、
前記第2アンテナは、前記エンジンの前方に配置されている、請求項1~8のいずれか1項に記載の建設機械。 - 前記エンジンの前方に配置され、前記車体に対して移動不能に固定された板金カバーをさらに備え、
前記第2アンテナは、前記板金カバーの上方に配置されている、請求項9に記載の建設機械。 - 前記エンジンの上方に配置されるエンジンフードをさらに備え、
前記エンジンフードは、前記車体に対して開閉可能である、請求項9または10に記載の建設機械。
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DE112017000132.3T DE112017000132T5 (de) | 2017-06-26 | 2017-06-26 | Erdbewegungsmaschine |
JP2017560636A JP7169068B2 (ja) | 2017-06-26 | 2017-06-26 | 油圧ショベル |
KR1020187004635A KR20190015167A (ko) | 2017-06-26 | 2017-06-26 | 건설 기계 |
US15/757,677 US11031684B2 (en) | 2017-06-26 | 2017-06-26 | Earth-moving machine |
CN201780002888.4A CN109429500A (zh) | 2017-06-26 | 2017-06-26 | 建筑机械 |
PCT/JP2017/023373 WO2019003266A1 (ja) | 2017-06-26 | 2017-06-26 | 建設機械 |
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JP2021067036A (ja) * | 2019-10-18 | 2021-04-30 | 酒井重工業株式会社 | 位置特定部材の取付構造 |
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WO2024043094A1 (ja) * | 2022-08-23 | 2024-02-29 | 株式会社小松製作所 | 作業機械 |
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