WO2012098940A1 - 建設機械 - Google Patents
建設機械 Download PDFInfo
- Publication number
- WO2012098940A1 WO2012098940A1 PCT/JP2012/050163 JP2012050163W WO2012098940A1 WO 2012098940 A1 WO2012098940 A1 WO 2012098940A1 JP 2012050163 W JP2012050163 W JP 2012050163W WO 2012098940 A1 WO2012098940 A1 WO 2012098940A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- roof plate
- lifting
- construction machine
- driver seat
- connecting beam
- Prior art date
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D33/00—Superstructures for load-carrying vehicles
- B62D33/06—Drivers' cabs
- B62D33/0617—Drivers' cabs for tractors or off-the-road vehicles
- B62D33/0625—Drivers' cabs for tractors or off-the-road vehicles open
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D25/00—Superstructure or monocoque structure sub-units; Parts or details thereof not otherwise provided for
- B62D25/06—Fixed roofs
- B62D25/07—Fixed roofs having water drainage or guide means integral with roof structure
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- 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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D33/00—Superstructures for load-carrying vehicles
- B62D33/06—Drivers' cabs
- B62D33/0617—Drivers' cabs for tractors or off-the-road vehicles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D33/00—Superstructures for load-carrying vehicles
- B62D33/06—Drivers' cabs
- B62D33/063—Drivers' cabs movable from one position into at least one other position, e.g. tiltable, pivotable about a vertical axis, displaceable from one side of the vehicle to the other
- B62D33/0633—Drivers' cabs movable from one position into at least one other position, e.g. tiltable, pivotable about a vertical axis, displaceable from one side of the vehicle to the other pivotable about a vertical axis
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- 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 such as a hydraulic excavator or a wheel loader, and more particularly to a construction machine provided with a canopy that covers a driver seat provided on a vehicle body from above.
- a hydraulic excavator as a construction machine used for earth and sand excavation work and the like includes a self-propelled vehicle body and a work device provided on the front side of the vehicle body so as to be lifted and lowered.
- a relatively small hydraulic excavator called a mini excavator, usually covers the driver's seat on the vehicle body with a canopy to prevent rainwater, snow, etc. (hereinafter referred to as rainwater) from falling on the operator seated in the driver's seat. It has a configuration.
- This type of canopy is composed of a left front strut standing on the left front side of the driver seat, a right front strut standing on the right front side of the driver seat, a left rear strut standing on the left rear side of the driver seat, A right rear strut erected on the right rear side of the driver's seat, a left connecting beam extending in the front and rear directions to connect the left front strut and the left rear strut, and a right front strut extending in the front and rear directions It is composed of a right connecting beam that connects the right rear strut, and a roof plate that extends forward and rearward between the left and right connecting beams and covers the upper part of the driver's seat (patent) Reference 1).
- a protrusion extending in the left and right directions is provided on the front side of the roof board constituting the canopy so that rainwater falling on the roof board can be blocked by the protrusion on the front side of the roof board.
- the right connecting beam and the left connecting beam are provided with hooks for hanging (locking) a hanging tool such as a wire, and the canopy can be lifted through the hooks.
- the protruding portion of the roof plate is not provided over the entire length (full width) in the left and right directions of the roof plate. For this reason, rainwater may flow out from the both ends of the protrusion to the front side of the roof plate, and the rainwater that flows out may drip down to the front side of the driver's seat. On the other hand, it is conceivable that rainwater is prevented from dripping on the front side of the driver's seat by providing a protrusion on the front end side of the roof plate over the entire length (full width) in the left and right directions. However, simply providing the protrusions over the entire length (full width) in the left and right directions may increase the number of parts.
- the present invention has been made in view of the above-described problems of the prior art, and it is an object of the present invention to provide a construction machine that can suppress rain water from dripping on the front side of a driver's seat and can suppress an increase in the number of parts. Yes.
- the present invention provides a self-propelled vehicle body provided with a work device on the front side, a driver seat provided on the vehicle body and seated by an operator, and the driver seat standing on the vehicle body.
- a canopy covering the upper side of the driver seat, the left canopy standing on the left front side of the driver seat, a right front strut standing on the right front side of the driver seat, and the left rear side of the driver seat A left rear strut erected on the right side, a right rear strut erected on the right rear side of the driver's seat, and a left connecting beam extending forward and rearward to connect the left front strut and the left rear strut And a right connecting beam extending in the front and rear directions to connect the right front column and the right rear column, and extending in the front and rear directions between the left connecting beam and the right connecting beam.
- the present invention is applied to a construction machine constituted by a roof plate covering an upper part of a seat.
- the feature of the configuration adopted by the present invention is that, on the front end side of the roof plate, a left connecting portion that connects the left front strut and the left connecting beam, and a right connecting portion that connects the right front strut and the right connecting beam, A bent portion that extends in the left and right directions and protrudes upward is provided between the left connecting portion and the right connecting portion.
- the plate-like lifting portion sandwiches the bent portion from the left and right directions. Brackets are provided, and at least one of the left lifting bracket and the right lifting bracket is provided with a drainage notch at a portion corresponding to the bent portion of the roof plate. There is.
- rain water can be dammed on the front end side of the roof plate by the bent portion.
- the bent portion since the bent portion is sandwiched left and right by a plate-like lifting bracket provided with a drainage notch, rainwater blocked by the bent portion is cut off from the lifting bracket. It flows to the front strut side through the notch, and can flow downward along the front strut. Thereby, it can suppress that rainwater droops to the front side of a driver's seat from the front end side of a roof board. As a result, it is possible to reduce rain water from falling on the operator's feet during operation, and to improve the work environment during rainy weather.
- the plate-like lifting bracket that sandwiches the front end side of the roof plate from the left and right directions has a function as a hook for hanging a lifting tool such as a wire, a hook, or a rope when lifting the canopy.
- a lifting tool such as a wire, a hook, or a rope
- the upper end of the lifting bracket projects above the flat portion of the roof plate, and the notch is cut from the upper end of the lifting bracket toward the flat portion of the roof plate. It is in that. According to this configuration, the rainwater blocked by the bent portion of the roof plate can be stably flowed to the front strut side through the notch.
- the bottom of the notch is configured to be cut out to a position below the upper surface of the flat portion of the roof plate. According to this structure, rainwater can be stably flowed to the front column side through the notch from the upper surface of the flat portion of the roof plate. Thereby, it is possible to prevent rainwater from collecting on the upper surface of the flat portion of the roof plate.
- the left lifting bracket and the right lifting bracket are provided with a suspension hole for attaching a lifting tool to a portion on the front side of the bent portion, and the bent portion is connected to the roof plate.
- the present invention has a configuration in which it is inclined obliquely and is set so that an angle formed between the bent portion and the flat portion of the roof plate is an acute angle. Thereby, it is possible to prevent the hung tool such as a wire, a hook, and a rope hung on the lifting hole of the lifting bracket from interfering with the bent portion, and the canopy lifting work can be stably performed.
- FIG. 1 is a front view showing a hydraulic excavator according to an embodiment of the present invention. It is a left view which shows a hydraulic excavator in the state which removed the working device. It is a top view of a hydraulic excavator. It is a perspective view which shows a canopy alone. It is a perspective view which shows a canopy in the state which removed the roofboard.
- FIG. 6 is an enlarged cross-sectional view of the canopy as seen from the direction of arrows VI-VI in FIG. 4. It is an expanded sectional view of the (VII) part in Drawing 6 showing a right front support, a right back support, a right connection beam, a roof board, and a bracket for right lifting.
- reference numeral 1 denotes a hydraulic excavator as a construction machine
- the vehicle body of the excavator 1 includes a crawler type lower traveling body 2 having left and right crawlers (tracks) 2A, and the lower traveling body 2.
- the upper revolving body 3 is mounted so as to be able to swivel upward.
- a swing type working device 4 described later is provided on the front side of the upper swing body 3 so as to be able to swing and elevate.
- the working device 4 is provided on the front side of the upper swing body 3.
- the working device 4 includes a swing post 5 attached to a front end side of a swing frame 14 to be described later so as to be swingable leftward and rightward, a boom 6 attached to the swing post 5 so as to be able to move up and down, and the boom. 6, an arm 7 attached to the tip of the arm 6 so as to be able to move up and down, a bucket 8 as a working tool rotatably attached to the tip of the arm 7, and provided between the arm 7 and the bucket 8.
- a bucket link 9 is provided.
- a swing cylinder 10 is provided between the swing frame 14 and the swing post 5 to swing the swing post 5 left and right (see FIG. 3).
- a boom cylinder 11 that moves the boom 6 up and down is provided between the swing post 5 and the boom 6.
- an arm cylinder 12 that moves the arm 7 up and down is provided.
- a bucket cylinder 13 that rotates the bucket 8 upward and downward is provided.
- the upper swing body 3 has a left and right width dimension substantially equal to the vehicle width of the lower traveling body 2 (interval between the left and right crawlers 2A), and is substantially circular when viewed from above. Is formed.
- the excavator 1 performs a small backward turning in which the rear end surface of the counterweight 15 described later is substantially within the vehicle width of the lower traveling body 2 when the upper revolving body 3 performs the turning operation on the lower traveling body 2. It is configured as a hydraulic excavator.
- the upper swing body 3 is generally constituted by a swing frame 14, a counterweight 15, a floor plate 16, a driver's seat 19, a canopy 23, and the like which will be described later.
- the swing frame 14 serves as a base of the upper swing body 3, and a swing post 5 of the work device 4 is attached to the front end side of the swing frame 14 so as to swing leftward and rightward.
- a counterweight 15 that balances the weight with the working device 4 is fixed to the rear end side of the revolving frame 14.
- an engine, a hydraulic pump, etc. are arranged on the front side of the counterweight 15.
- the floor board 16 is provided on the revolving frame 14.
- the floor plate 16 includes a footrest plate 17 that serves as a place for an operator seated in a driver seat 19 to be described later, and a driver seat support base 18 that supports the rising driver seat 19 from the rear side of the footrest plate 17. It is comprised by.
- the driver's seat 19 is supported on a driver's seat support base 18 constituting the floor plate 16, and the driver's seat 19 is seated by an operator who operates the hydraulic excavator 1.
- Work operation levers 20 for operating the work device 4 and the like are disposed on both the left and right sides of the driver seat 19.
- a traveling operation lever / pedal 21 for operating the traveling of the lower traveling body 2 is disposed on the front side of the driver seat 19.
- the exterior cover 22 is provided so as to surround the driver's seat 19.
- the exterior cover 22 covers an engine, a hydraulic pump, a heat exchanger, a hydraulic oil tank, a fuel tank, etc. (all not shown) mounted on the revolving frame 14 together with a counterweight 15 and the like.
- reference numeral 23 denotes a canopy that stands up around the driver's seat 19 and covers the upper side of the driver's seat 19, and the canopy 23 protects the operator seated on the driver's seat 19 from rainwater.
- the canopy 23 is configured as a four-column canopy having excellent rigidity by a support column 24 and a roof plate 25 described later.
- Reference numeral 24 is a support column which stands up around the driver's seat 19 and includes the left front support column 24A, the right front support column 24B, the left rear support column 24C, the right rear support column 24D, the left connecting beam 24E, The connecting beam 24F, the front connecting beam 24G, and the rear connecting beam 24H are configured.
- the left front column 24A is erected on the left front side of the driver seat 19
- the right front column 24B is erected on the right front side of the driver seat 19
- the left rear column 24C is erected on the left rear side of the driver seat 19
- the right rear column 24D is erected on the right rear side of the driver's seat 19.
- the left connecting beam 24E extends in the front and rear directions to connect the left front column 24A and the left rear column 24C
- the right connecting beam 24F extends in the front and rear directions
- the right front column 24B and the right rear column 24D extends in the front connecting beam 24G
- the front connecting beam 24G extends in the left and right directions to connect the left connecting beam 24E and the right connecting beam 24F
- the rear connecting beam 24H extends in the left and right directions and the left rear column 24C.
- the right rear support 24D is the left connecting beam 24E and the right connecting beam 24F
- the left front strut 24A, the left connecting beam 24E, and the left rear strut 24C are integrally formed, for example, by bending one cylindrical steel pipe.
- the left front post 24A and the left connecting beam 24E are smoothly connected via the left front connecting portion 24J as the left connecting portion curved in an arc shape, and between the left connecting beam 24E and the left rear post 24C.
- the right front strut 24B, the right connecting beam 24F, and the right rear strut 24D are also integrally formed by, for example, bending a single cylindrical steel pipe. Accordingly, the right front column 24B and the right connecting beam 24F are smoothly connected via the right front connecting unit 24L as the right connecting unit curved in an arc shape, and the right connecting column 24F and the right rear column 24D are connected. Are smoothly connected via a right rear connecting portion 24M curved in an arc shape.
- the front connecting beam 24G is formed of, for example, a steel material (channel material) having a U-shaped cross section, and both ends thereof are joined to the left connecting beam 24E and the right connecting beam 24F by welding, respectively.
- the rear connection beam 24H is formed of, for example, a cylindrical steel pipe, and both ends thereof are joined to the left rear column 24C and the right rear column 24D by welding, respectively.
- the roof plate 25 is a roof plate provided on the upper end side of the support column 24.
- the roof plate 25 is formed in a flat plate shape using, for example, a thin steel plate material.
- the roof plate 24 extends forward and rearward while being sandwiched between the left connecting beam 24E and the right connecting beam 24F, and covers the upper side of the driver seat 19.
- the roof plate 25 is provided between the front connecting beam 24E and the rear connecting beam 24F, and is provided on a flat portion 25A that covers the driver's seat 19 from above, and on the front end side of the flat portion 25A.
- a bent portion 25B extending leftward and rightward and projecting upward between the left front connecting portion 24J and the right front connecting portion 24L, and provided on the rear end side of the flat portion 25A from the rear end side toward the rear connecting beam 24H And a bending portion 25C that bends.
- the flat portion 25A has a substantially flat shape, more specifically, a portion overlapping with the front connecting beam 24G in the upper and lower directions has the highest height, and a portion corresponding to the front connecting beam 24G extends forward and backward. It is inclined so that its height becomes slightly lower as it goes away.
- a plurality of (for example, four) reinforcing portions 25A2 projecting upward from the upper surface 25A1 are provided on the upper surface 25A1 of the flat portion 25A so as to extend in the front and rear directions and spaced apart in the left and right directions. ing.
- the bent portion 25B provided on the front end side of the roof plate 25 is bent to the front end side of the flat portion 25A, for example, so that the total length (full width) in the left and right directions of the roof plate 25 (flat portion 25A). Is formed over.
- the bent portion 25B plays a role of a rain gutter that dams rainwater falling on the upper surface 25A1 of the flat portion 25A on the front side of the roof plate 25 and guides the dammed rainwater left and right. .
- the roof board 25 can suppress that rainwater falls downward from the front end side of the roof board 25.
- the bent portion 25B is inclined obliquely rearward with respect to the flat portion 25A of the roof plate 25, and the angle ⁇ formed by the bent portion 25B and the upper surface 25A1 of the flat portion 25A is set to an acute angle.
- the wire 28 hung on the suspension holes 26A, 27A of the left and right front lifting brackets 26, 27 described later can be prevented from interfering with the bent portion 25B. It is composed.
- reference numeral 26 denotes a left front lifting bracket as a left lifting bracket provided at the position of the left front connecting portion 24J between the left front column 24A and the left connecting beam 24E.
- Reference numeral 27 denotes a right front lifting bracket as a right lifting bracket provided at the position of the right front coupling portion 24L between the right front column 24B and the right coupling beam 24F.
- These left and right front lifting brackets 26 and 27 are respectively provided on the left front connecting portion 24J and the right front connecting portion 24L so as to sandwich the bent portion 25B of the roof plate 25 from the left and right directions.
- the front lifting brackets 26 and 27 are formed of a steel plate or the like as a substantially right triangular plate body, and are concavely curved so that portions corresponding to the hypotenuses follow the left and right front connecting portions 24J and 24L. It is formed in a shape.
- the front lifting brackets 26 and 27 are joined to the front connecting portions 24J and 24L by, for example, welding.
- the left and right end edges on the front end side of the roof plate 25 that is, the left and right end edges on the front end side of the flat portion 25A and the left and right sides of the bent portion 25B. Both ends in the direction are joined by welding.
- the left and right front lifting brackets 26 and 27 are provided with suspension holes 26A and 27A at the front side of the bent portion 25B. As shown in FIGS. 7 and 8, for example, when the canopy 23 is hung, a wire 28 or the like as a hanging tool is hung on each hanging hole 26 ⁇ / b> A, 27 ⁇ / b> A.
- Notches 26B and 27B for drainage are provided at portions of the left and right front lifting brackets 26 and 27 corresponding to the bent portions 25B on the rear side of the suspension holes 26A and 27A. These notches 26B and 27B are notched so that the upper part is opened. That is, the upper ends 26 ⁇ / b> C and 27 ⁇ / b> C of the left and right front lifting brackets 26 and 27 protrude above the flat portion 25 ⁇ / b> A of the roof plate 25.
- the notches 26B and 27B are configured to be cut out in a V shape or a U shape from the upper ends 26C and 27C of the lifting brackets 26 and 27 toward the flat portion 25A of the roof plate 25.
- the notches 26B and 27B allow rainwater blocked by the bent portion 25B to flow out to the left and right front connecting portions 24J and 24L, and from the left and right front connecting portions 24J and 24L. It is made to flow down through 24B.
- the bottom portions 26B1 and 27B1 of the notches 26B and 27B are notched to a position below the upper surface 25A1 of the flat portion 25A of the roof plate 25. That is, as shown in FIGS. 9 and 10, the bottom portions 26B1 and 27B1 of the notches 26B and 27B are located below the upper surface 25A1 of the flat portion 25A of the roof plate 25 by a step size S. As a result, rainwater stably flows from the upper surface 25A1 of the flat portion 25A of the roof plate 25 through the notches 26B and 27B to the left and right front connecting portions 24J and 24L and the left and right front struts 24A and 24B. It is configured as follows.
- the step size S between the bottom portions 26B1, 27B1 of the notches 26B, 27B and the upper surface 25A1 of the flat portion 25A is set to a value smaller than the plate thickness T of the roof plate 25 (S ⁇ T). This prevents rainwater from flowing down from the bottoms 26B1 and 27B1 of the notches 26B and 27B to the driver's seat 19 side.
- the left rear lifting bracket 29 is provided in the left rear connecting portion 24K.
- the right rear lifting bracket 30 is provided in the right rear connecting portion 24M.
- Each of the rear lifting brackets 29 and 30 is formed of a steel plate or the like as a plate having a substantially right triangle shape, and has suspension holes 29A and 30A provided at substantially the center. As shown in FIGS. 7 and 8, for example, when the canopy 23 is suspended, the wires 28 and the like are hung on the suspension holes 29 ⁇ / b> A and 30 ⁇ / b> A.
- the front pedestal member 31 is provided between the lower end side of the left front column 24A and the lower end side of the right front column 24B.
- the front pedestal member 31 fixes the left front strut 24A and the right front strut 24B to the floor board 16 and protects the operator's feet.
- the protection bar 32 is provided between the left front column 24A and the right front column 24B.
- the protection bar 32 protects the driver's seat 19 from the front side.
- the rear pedestal member 33 is provided between the lower end side of the left rear column 24C and the lower end side of the right rear column 24D. The rear pedestal member 33 fixes the left rear strut 24C and the right rear strut 24D to the driver seat support base 18 and protects the driver seat 19 from the rear side.
- the hydraulic excavator 1 has the above-described configuration.
- the operator When performing excavation work of earth and sand using the hydraulic excavator 1, the operator is seated in the driver's seat 19 and the traveling operation lever / By operating the pedal 21, the hydraulic excavator 1 is self-propelled to the work site.
- the work operation lever 20 By operating the work operation lever 20 at the work site, the work device 4 can be moved up and down while turning the upper swing body 3, and excavation work of earth and sand can be performed using the work device 4.
- the hydraulic excavator 1 has a configuration in which a bent portion 25B that extends in the left and right directions and protrudes upward is provided on the front end side of the roof plate 25. For this reason, the rainwater that falls on the roof plate 25 and flows forward due to the inclination of the upper surface 25A1 of the flat portion 25A is blocked by the bent portion 25B on the front end side of the roof plate 25.
- plate-like left and right front lifting brackets 26 and 27 are provided so as to sandwich the bent portion 25B from the left and right directions, and each of the front lifting brackets 26 and 27 is provided. Are provided with notches 26B and 27B for drainage.
- the rainwater blocked by the bent portion 25B is guided left and right by the bent portion 25B, and left and right fronts through the notches 26B and 27B of the left and right front lifting brackets 26 and 27. It flows toward the connecting portions 24J and 24L.
- Rainwater that has flowed to the left and right front connecting portions 24J and 24L flows down through the front struts 24A and 24B.
- rain water can be prevented from dripping from the front end side of the roof plate 25 to the front side of the driver's seat 19.
- the plate-like front lifting brackets 26 and 27 sandwiching the front end side of the roof plate 25 from the left and right directions have a function as a hook for hooking the wire 28 when the canopy 23 is lifted, for example.
- the upper ends 26C and 27C of the front lifting brackets 26 and 27 protrude upward from the flat portion 25A of the roof plate 25, and the notches 26B and 27B extend from the upper ends 26C and 27C of the front lifting brackets 26 and 27, respectively. It is set as the structure cut out in V shape or U shape toward the flat part 25A of the roof board 25. FIG. For this reason, the rainwater blocked by the bent portion 25B of the roof plate 25 can flow stably to the front struts 24A and 24B through the notches 26B and 27B of the front lifting brackets 26 and 27.
- the bottom portions 26B1, 27B1 of the left and right front lifting brackets 26, 27 are cut to a position below the upper surface 25A1 of the flat portion 25A of the roof plate 25.
- the structure is lacking. For this reason, rainwater can flow stably from the upper surface 25A1 of the flat portion 25A of the roof plate 25 to the left and right front struts 24A and 24B through the notches 26B and 27B. Thereby, it can suppress that rainwater accumulates on upper surface 25A1 of flat part 25A of the roof board 25.
- the step size S between the bottom portions 26B1 and 27B1 of the notches 26B and 27B and the upper surface 25A1 of the flat portion 25A is smaller than the plate thickness T of the roof plate 25 (S ⁇ T).
- the bent portion 25B is inclined obliquely rearward with respect to the flat portion 25A of the roof plate 25, and the angle ⁇ formed by the bent portion 25B and the flat portion 25A is set to be an acute angle. ing. Therefore, as shown in FIGS. 7 and 8, for example, when the canopy 23 is lifted using the wire 28, the wire 28 hung on the suspension holes 26A, 27A of the left and right front lifting brackets 26, 27 Interference with the bent portion 25B can be suppressed, and the canopy 23 can be stably lifted.
- the case where the notches 26B and 27B are provided in both the left and right front lifting brackets 26 and 27 has been described as an example.
- the present invention is not limited to this, and for example, a notch may be provided in any one of the left and right front lifting brackets.
- the upper surface of the flat portion of the roof plate is preferably configured to be inclined toward the front lifting bracket provided with the notch.
- the present invention is not limited to this, and may be, for example, a rectangular or semicircular cutout, or a cutout (for example, a through hole) that does not open upward.
- various shapes can be used as long as rainwater can flow from the upper surface of the roof plate to the support column side.
- the present invention is not limited to this.
- the canopy may be lifted by using a hook, a rope, or the like as a hanging tool.
- the roof plate 25 is formed of a steel plate.
- the present invention is not limited thereto, and for example, the roof plate is a metal plate other than a steel plate, a synthetic resin plate, or the like. May be formed.
- a crawler type hydraulic excavator is exemplified as a construction machine provided with the canopy 23.
- the present invention is not limited to this, and can be widely applied to, for example, construction machines equipped with a canopy such as a wheel-type hydraulic excavator, a hydraulic crane, and a wheel loader.
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Abstract
Description
2 下部走行体(車体)
3 上部旋回体(車体)
19 運転席
23 キャノピ
24A 左前支柱
24B 右前支柱
24C 左後支柱
24D 右後支柱
24E 左連結梁
24F 右連結梁
24J 左前連結部(左連結部)
24L 右前連結部(右連結部)
25 屋根板
25A 平坦部
25A1 上面
25B 屈曲部
26 左前吊上げ用ブラケット(左吊上げ用ブラケット)
26A 吊り穴
26B 切欠き
26B1 底部
26C 上端
27 右前吊上げ用ブラケット(右吊上げ用ブラケット)
27A 吊り穴
27B 切欠き
27B1 底部
27C 上端
Claims (4)
- 前部側に作業装置(4)が設けられた自走可能な車体(2,3)と、該車体(2,3)に設けられオペレータが着席する運転席(19)と、前記車体(2,3)に立設され前記運転席(19)の上方を覆うキャノピ(23)とを備え、
前記キャノピ(23)は、前記運転席(19)の左前側に立設された左前支柱(24A)と、前記運転席(19)の右前側に立設された右前支柱(24B)と、前記運転席(19)の左後側に立設された左後支柱(24C)と、前記運転席(19)の右後側に立設された右後支柱(24D)と、前,後方向に延びて前記左前支柱(24A)と左後支柱(24C)との間を連結する左連結梁(24E)と、前,後方向に延びて前記右前支柱(24B)と右後支柱(24D)との間を連結する右連結梁(24F)と、前記左連結梁(24E)と右連結梁(24F)との間に前,後方向に延びて設けられ前記運転席(19)の上方を覆う屋根板(25)とにより構成してなる建設機械において、
前記屋根板(25)の前端側には、前記左前支柱(24A)と左連結梁(24E)とを連結する左連結部(24J)と、前記右前支柱(24B)と右連結梁(24F)とを連結する右連結部(24L)との間で、左,右方向に延びると共に上向きに突出する屈曲部(25B)を設け、
前記左連結部(24J)の位置と右連結部(24L)の位置とには、前記屈曲部(25B)を左,右方向から挟む板状の吊上げ用ブラケット(26,27)をそれぞれ設け、
これら左吊上げ用ブラケット(26)と右吊上げ用ブラケット(27)とのうちの少なくとも一方の吊上げ用ブラケットには、前記屋根板(25)の屈曲部(25B)と対応する部位に排水用の切欠き(26B,27B)を設ける構成としたことを特徴とする建設機械。 - 前記吊上げ用ブラケット(26,27)の上端(26C,27C)は、前記屋根板(25)の平坦部(25A)よりも上方に突出させ、前記切欠き(26B,27B)は、前記吊上げ用ブラケット(26,27)の上端(26C,27C)から前記屋根板(25)の平坦部(25A)に向けて切欠く構成としてなる請求項1に記載の建設機械。
- 前記切欠き(26B,27B)の底部(26B1,27B1)は、前記屋根板(25)の平坦部(25A)の上面(25A1)よりも下側位置にまで切欠く構成としてなる請求項1に記載の建設機械。
- 前記左吊上げ用ブラケット(26)と右吊上げ用ブラケット(27)には、前記屈曲部(25B)よりも前側となる部位に吊り具(28)を取付けるための吊り穴(26A,27A)を設け、
前記屈曲部(25B)は、前記屋根板(25)に対して斜め後方に傾斜させ、前記屈曲部(25B)と前記屋根板(25)の平坦部(25A)とのなす角度(α)が鋭角になるように設定してなる請求項1に記載の建設機械。
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JP2012553653A JP5511993B2 (ja) | 2011-01-19 | 2012-01-06 | 建設機械 |
US13/990,611 US8714629B2 (en) | 2011-01-19 | 2012-01-06 | Construction machine |
CN201280005458.5A CN103314164B (zh) | 2011-01-19 | 2012-01-06 | 工程机械 |
EP12737101.1A EP2666913B1 (en) | 2011-01-19 | 2012-01-06 | Construction machine |
KR1020137018720A KR20140009286A (ko) | 2011-01-19 | 2012-01-06 | 건설 기계 |
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JP2014234066A (ja) * | 2013-05-31 | 2014-12-15 | コベルコ建機株式会社 | キャノピのルーフ構造 |
JP2015140147A (ja) * | 2014-01-30 | 2015-08-03 | 井関農機株式会社 | ルーフ |
JP2015221969A (ja) * | 2014-05-22 | 2015-12-10 | 日立建機株式会社 | 建設機械 |
JP2017048523A (ja) * | 2015-08-31 | 2017-03-09 | 株式会社クボタ | 作業機のキャノピ及びこのキャノピを備えた作業機 |
JP2017115356A (ja) * | 2015-12-22 | 2017-06-29 | 株式会社クボタ | キャノピ及びキャノピを備えた作業機 |
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GB2531762A (en) | 2014-10-29 | 2016-05-04 | Bamford Excavators Ltd | Working machine |
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JPWO2012098940A1 (ja) | 2014-06-09 |
EP2666913B1 (en) | 2015-08-05 |
CN103314164B (zh) | 2014-12-17 |
KR20140009286A (ko) | 2014-01-22 |
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US8714629B2 (en) | 2014-05-06 |
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