WO2008004651A1 - Machine de construction - Google Patents

Machine de construction Download PDF

Info

Publication number
WO2008004651A1
WO2008004651A1 PCT/JP2007/063543 JP2007063543W WO2008004651A1 WO 2008004651 A1 WO2008004651 A1 WO 2008004651A1 JP 2007063543 W JP2007063543 W JP 2007063543W WO 2008004651 A1 WO2008004651 A1 WO 2008004651A1
Authority
WO
WIPO (PCT)
Prior art keywords
force bar
external force
internal force
body frame
soundproof cover
Prior art date
Application number
PCT/JP2007/063543
Other languages
English (en)
Japanese (ja)
Inventor
Masanobu Seki
Kuniaki Nakada
Original Assignee
Komatsu Ltd.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Komatsu Ltd. filed Critical Komatsu Ltd.
Priority to DE112007001547.0T priority Critical patent/DE112007001547B4/de
Priority to SE0802641A priority patent/SE532757C2/sv
Priority to CN2007800257004A priority patent/CN101484645B/zh
Priority to JP2008523745A priority patent/JP4833287B2/ja
Publication of WO2008004651A1 publication Critical patent/WO2008004651A1/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D53/00—Tractor-trailer combinations; Road trains
    • B62D53/02—Tractor-trailer combinations; Road trains comprising a uniaxle tractor unit and a uniaxle trailer unit
    • B62D53/021—Tractor-trailer combinations; Road trains comprising a uniaxle tractor unit and a uniaxle trailer unit comprising a universal coupling joint
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R13/00—Elements for body-finishing, identifying, or decorating; Arrangements or adaptations for advertising purposes
    • B60R13/08—Insulating elements, e.g. for sound insulation
    • B60R13/0861—Insulating elements, e.g. for sound insulation for covering undersurfaces of vehicles, e.g. wheel houses
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R13/00—Elements for body-finishing, identifying, or decorating; Arrangements or adaptations for advertising purposes
    • B60R13/08—Insulating elements, e.g. for sound insulation
    • B60R13/0884—Insulating elements, e.g. for sound insulation for mounting around noise sources, e.g. air blowers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D53/00—Tractor-trailer combinations; Road trains
    • B62D53/02—Tractor-trailer combinations; Road trains comprising a uniaxle tractor unit and a uniaxle trailer unit
    • B62D53/025—Comprising a transmission shaft passing through the coupling joints
    • B62D53/026—With all wheels powered
    • 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
    • E02F3/34—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 bucket-arms, i.e. a pair of arms, e.g. manufacturing processes, form, geometry, material of bucket-arms directly pivoted on the frames of tractors or self-propelled machines
    • E02F3/3405—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 bucket-arms, i.e. a pair of arms, e.g. manufacturing processes, form, geometry, material of bucket-arms directly pivoted on the frames of tractors or self-propelled machines and comprising an additional linkage mechanism
    • E02F3/3411—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 bucket-arms, i.e. a pair of arms, e.g. manufacturing processes, form, geometry, material of bucket-arms directly pivoted on the frames of tractors or self-propelled machines and comprising an additional linkage mechanism of the Z-type
    • 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
    • E02F9/0841—Articulated frame, i.e. having at least one pivot point between two travelling gear units

Definitions

  • the present invention relates to a construction machine, for example, a soundproof structure for a construction machine that employs an articulate structure or an axle swinging system.
  • noise reduction in the case of an electric construction machine, the noise reduction is promoted because the engine is not installed. In the hybrid construction machine, the engine is installed. Since a relatively small engine is sufficient, noise reduction is also promoted.
  • Patent Document 1 Japanese Patent Laid-Open No. 09-240507
  • Patent Document 1 the technique described in Patent Document 1 is simply performed by a cover fixed to the frame.
  • the propeller shaft also swings with the swing of the frame, so it is not possible to sufficiently cope with such swinging. There is a problem.
  • construction machinery often adopts an axle rocking method to reduce shaking during rough terrain travel.
  • axle rocking method to reduce shaking during rough terrain travel.
  • An object of the present invention is to provide a construction machine capable of leaking sound generated from a device related to generation and transmission of power to the outside even when having a swinging portion, thereby promoting noise reduction. I'll stop.
  • the construction machine of the present invention includes a fixed side member, a swing side member that swings with respect to the fixed side member, and a soundproof cover that covers a swinging portion of the swing side member.
  • the external force bar the outside of the planar portion provided on the internal force bar and the inside of the planar portion provided on the external force bar are opposed to each other and overlapped in the radial direction around the oscillation center axis.
  • the rocking portion is covered with the soundproof cover constituted by the internal force bar and the external force bar, the sound energy of the sound generated inside without disturbing the rocking of the rocking side member is reduced. It can be attenuated by a gap formed between the planar portions of the inner and outer covers, and noise reduction can be promoted.
  • a sound absorbing material provided on the inner side of the external force bar and z or on the outer side of the internal force bar is disposed at least in the gap formed between the planar portions. Is desirable.
  • the sound absorbing material is arranged in the gap between the overlapping planar portions, the generated sound that leaks from the gap can be effectively absorbed by the sound absorbing effect of the sound absorbing material, and the low noise can be obtained. Can be further promoted.
  • an inner side of the external force bar or the internal force bar is covered with a sound absorbing material. It is desirable that
  • the sound absorbing material is disposed so as to cover the inner side of the inner and outer covers, so that the sound absorbing effect can be further improved.
  • planar portions that overlap each other are provided in a substantially concentric shape having different diameters (offset) with respect to the center of curvature.
  • each planar portion does not need to be provided in a concentric shape.
  • each planar portion should be provided concentrically as long as the gap is maintained so that it does not interfere during swinging! /.
  • each planar portion of the inner and outer covers is provided concentrically at the offset position, so that the gap between the planar portions can be reliably maintained during swinging, and the mutual interference occurs. Can be prevented.
  • the internal force bar has a storage portion that is accommodated in the external force bar, and the planar portion of the internal force bar is provided in the storage portion, and the external force bar
  • the planar portion of the internal force bar is provided in the storage portion, and the external force bar
  • the opening portion that communicates the planar portion along the circumferential direction with the inside and the outside, and the opening width of the opening portion is larger than the outer diameter of the housing portion. It is desirable.
  • the opening width of the external force bar is larger than the diameter of the receiving portion of the internal force bar, the receiving portion can be easily attached and detached through the opening, and the maintenance time can be shortened. Thus, workability can be improved.
  • the fixed-side member is a vehicle body frame
  • the swing-side member is a work machine frame to which a work machine is attached.
  • a vehicle having an articulated structure is formed by these frames.
  • the soundproof cover may cover the swinging portion of the work machine frame with respect to the vehicle body frame.
  • the soundproof cover is attached without hindrance. It can reduce the noise during traveling and work.
  • the fixed side member is a vehicle body frame
  • the swing side member is an axle that swings with respect to the vehicle body frame
  • the internal force bar of the soundproof cover is on the vehicle body frame side.
  • the external force bar is attached to the axle nose of the axle.
  • a vehicle body frame, a work machine frame that swings with respect to the vehicle body frame and to which the work machine is attached, and a vehicle having an articulate structure are formed by these frames.
  • a soundproof cover that covers a swinging portion of the work machine frame with respect to the vehicle body frame, and the soundproof cover is attached to the work machine frame side and covers the outside of the internal force bar attached to the vehicle body frame side.
  • the outer side of the planar portion provided on the inner cover and the inner side of the planar portion provided on the external force bar are opposed to each other around the oscillation center axis. And overlapping in the radial direction, at least in the gap formed between the planar portions
  • the sound absorbing material provided on the inside of the external force bar and Z or on the outside of the internal force bar is disposed, and further, the inside of the internal force bar is covered with the sound absorbing material.
  • the inner cover has a housing portion that is housed in the external force bar, and the surface portion of the internal force bar is provided in the housing portion, and the external force is provided in the housing portion.
  • Around the rocking central axis of the bar there are provided the planar portion along the circumferential direction and an opening portion having an outer diameter that is larger than the outer diameter of the housing portion that communicates the inside and the outside. And the center of curvature of the surface portion of the external force bar and the center of curvature of the surface portion of the internal force bar are substantially the same.
  • the soundproof cover is provided so as to cover the front propeller shaft that transmits the driving power to the vehicle body frame side force to the work implement frame side.
  • an external force bar attached to the vehicle body frame side and an internal force bar attached to the work machine frame side.
  • the external force bar has a pair of curved edges spaced apart in the vehicle width direction. And a pair of upright portions erected along the curved edges of the bottom surface portion, and front and rear openings formed between the upright surface portions.
  • a planar portion of the external force bar is formed, and the inner cover includes a planar semicircular accommodating portion accommodated in the external force bar and a front side of the accommodating portion.
  • a flat rectangular box-shaped portion that is provided integrally with the front propeller shaft and covers the front end side of the front propeller shaft, and the storage portion is erected along a bottom surface portion and an edge of the bottom surface portion, and
  • the internal force bar has a pair of vertical surfaces facing the vertical surfaces of the external force bar, and front and rear openings formed between the vertical surfaces.
  • a portion is formed, and the housing portion and the box-shaped portion communicate with each other through a front opening, and the front propeller shaft passes through the openings of the external force bar and the internal force bar in the front-rear direction. It is characterized by being extended along
  • the construction machine of the present invention includes a vehicle body frame, an axle housing of a rear axle that swings with respect to the vehicle body frame, and a main soundproof covering the lower side of the vehicle body frame over substantially the entire region in the front-rear direction.
  • the soundproof cover is attached to the main soundproof cover side and an internal force bar is attached to the vehicle body frame side to the internal force.
  • An external force bar that covers the outside of the bar. In the internal force bar and the external force bar, the outer surface of the planar portion provided on the internal force bar and the planar portion provided on the external force bar around the oscillation center axis.
  • the inner side faces and overlaps in the radial direction, and at least a gap formed between the planar portions includes the inner side of the external force bar and Z or the inner side.
  • the sound absorbing material provided on the outside of the bar is arranged, and the inside of the internal force bar is covered with the sound absorbing material, and the planar portions that overlap each other are substantially concentric with different diameters relative to the center of curvature.
  • the position of the pivot center of the axle housing with respect to the body frame, the center of curvature of the planar portion of the internal force bar, and the center of curvature of the planar portion of the internal force bar are substantially the same.
  • both sides of the axle housing are passed through both sides of the main soundproof cover in the vehicle width direction, and in order to avoid interference with the swinging axle housing.
  • a pair of notches are provided, and the soundproof covers are provided on both sides in the vehicle width direction so as to cover the notches, and the internal force bar attached around the notches of the main soundproof cover;
  • the notch portion force is composed of the protruding external force bar attached to the axle housing side, and the internal force bar is provided at a position corresponding to the rising surface portion and the notch portion of the main soundproof cover of the rising surface portion.
  • the internal force bar is formed with a notched portion, and the external force bar is formed on the external force bar side facing the vertical surface portion of the internal force bar.
  • a notch portion on the side of the external force bar through which the end of the hooding is inserted and fixed.
  • a surface portion on the side of the external force bar is formed on the vertical surface portion, and the axle node.
  • FIG. 1 is a side view showing an overall outline of a construction machine according to an embodiment of the present invention.
  • FIG. 2 is a side view showing the main part of the construction machine.
  • FIG. 3 is a plan view showing the main part.
  • FIG. 4 is a plan view showing the main part when the construction machine is articulated.
  • FIG. 5 is an enlarged perspective view showing components constituting the articulate portion of the main part.
  • FIG. 6 is a view of the main part seen from the rear side.
  • FIG. 7 is an exploded perspective view showing, on an enlarged scale, components constituting the rear axle swinging portion of the main part.
  • 10 wheel loader (construction machine), 11 ... body frame (fixed side member), 12 ... work machine frame (swing side member), 23 ... rear axle (swing side member), 32 ... ⁇ Soundproof cover for the articulated part (soundproof cover), 33, 38 ⁇ External force bar, 34, 37 ⁇ Inner knitting, 35 ⁇ Sound absorbing material, 36 ⁇ Soundproof cover for the rear axle Soundproof cover), 341... accommodating part, CI, C2-Oscillation center shaft.
  • FIG. 1 is a side view showing an overall outline of a wheel loader (construction machine) 10 according to the present embodiment.
  • FIG. 2 is a side view showing the main part of the wheel loader 10.
  • FIG. 3 is a plan view showing the main part.
  • FIG. 4 is a plan view showing a main part when the wheel loader 10 is articulated.
  • FIG. 5 is an oblique view showing an enlarged component constituting the articulate portion of the main part.
  • FIG. 6 is a view of the main part seen from the rear side.
  • FIG. 7 is an exploded perspective view showing, in an enlarged manner, constituent members constituting the rear axle sliding portion of the main part.
  • the wheel loader 10 of the present embodiment is an electric type, and no engine is mounted.
  • the body frame (fixed side member) 11 on the side where the cab is provided has an electric motor driven by electric energy from a battery (not shown), an HST pump driven by an electric motor, A work machine pump driven by a motor, an HST motor driven by pressure oil from the HST pump, etc. are arranged.
  • the lift cylinder 13 and the dump cylinder 14 provided on the work equipment frame (swinging side member) 12 on the front side of the vehicle are operated by the pressure oil from the work equipment pump, and each cylinder 13 is operated. , 14 is transmitted to the packet 18 through the arm 15, the bell crank 16, and the link 17 to operate the packet 18.
  • the output of the HST motor is supplied to the front axle 22 on the work machine frame 12 side and the front propeller shaft 20 and the rear propeller shaft 21 connected to the speed reducer 19. It is transmitted to the rear axle 23 on the body frame 11 side, and the front and rear wheels 24 are rotated.
  • the work machine frame 12 can swing with respect to the vehicle body frame 11 within a predetermined articulate angle range with the center pin 25 as the swing center axis C1.
  • the wheel guard 10 is an articulated vehicle having the frames 11 and 12.
  • the center pin 25 is provided so as to penetrate vertically through the overlapping portion of the hinges protruding from the frames 11 and 12. Then, the swing of the work machine frame 12 is performed according to the steering angle at the time of the steering operation by the articulate cylinder 26 installed on the frames 11 and 12.
  • the above-described body frame 11 is opened downward, and an electric motor, an HST pump, and the like are disposed therein, so that these driving sounds leak from the bottom of the body frame 11 to the outside. Further, the rotational sound of the propeller shafts 20 and 21 positioned below the vehicle body frame 11 is also radiated to the outside. For this reason, in this embodiment, various soundproof covers made of sheet metal are attached in order to prevent the drive sound, rotation sound,! /, And the generated sound from being emitted to the outside.
  • the lower side of the vehicle body frame 11 has a main soundproof cover over substantially the entire region in the front-rear direction. Covered with one thirty.
  • a front axle soundproof cover 31 is attached so as to cover the front axle 22 with a downward force.
  • the space between the main soundproof bar 30 and the front axle soundproof cover 31 is covered with an articulated soundproof cover (hereinafter referred to as an ACL soundproof cover) 32.
  • the soundproof bar 32 for the ACL section covers most of the front propeller shaft 20 with the downward force.
  • the rear axle 23 swings about the swing center axis C2 along the front-rear direction, so that it corresponds to both the left and right sides of the rear axle 23 in the main soundproof cover 30.
  • the position is provided with a large notch 30A to avoid interference with axle nodding during swinging.
  • a rear axle soundproof cover 36 is provided so as to cover the notch 30A.
  • the ACL soundproof cover 32 includes an external force bar 33 attached to the body frame 11 side corresponding to the swing of the work machine frame 12 side with respect to the body frame 11, and the work machine frame 12. It consists of an internal force bar 34 attached to the side.
  • the portion around the swing center axis C1 is accommodated in the external force bar 33, and as shown in FIG.
  • a slight gap is created on the mountain fold side, and the largest overlap is created on the valley fold side.
  • the shapes and sizes of the covers 33 and 34 are set so that the front propeller shaft 20 that swings at the same time does not interfere even when swinging at the maximum angle.
  • Fig. 5 shows the specific shapes of the covers 33 and 34.
  • the external force bar 33 includes a bottom surface portion 331 having a pair of curved edges spaced in the vehicle width direction, and circumferentially along each curved edge of the bottom surface portion 331. And a pair of upright surfaces 332 that are erected.
  • the center of curvature of the surface portion formed by the curved surface of the upright portion 332 is substantially the same as the position of the oscillation center axis C1.
  • the opening on the rear side communicates with the inside of the main soundproof cover 30, and the base end of the front propeller shaft 20 even when rocked at the maximum angle. It has a width of a certain extent so that the sides do not interfere.
  • the opening width of the opening portion on the front side is a size that does not interfere with the internal force bar 34 accommodated inside even when it swings at the maximum angle, and outside the accommodating portion 341 described later of the internal force bar 34. It is larger than the dimensions. As a result, the accommodating portion 341 of the internal force bar 34 can be easily attached to and detached from the external force bar 33.
  • the vertical surface 332 is provided with a mounting piece 333 force by cutting and bending, and the external force bar 33 is attached to the lower surface of the vehicle body frame 11 with a bolt or the like penetrating the mounting piece 333.
  • a sound absorbing material 35 having a force such as urethane foam is attached inside the bottom surface portion 331 and the elevation surface portion 332.
  • a sound absorbing material 35 includes not only the external force bar 33, but also the internal force bar 34 described below, the main soundproof cover 30 described above, the soundproof cover 31 for the front axle, and the soundproof cover for the rear axle described later.
  • the sound absorbing material 35 may be attached to the outside of the upright surface portion 346 (described later) constituting the internal force bar 34 connecting the inside of the upright surface portion 332. Whether the sound absorbing material is to be affixed to the inner or outer cover is determined as appropriate in the implementation, and the same applies to the rear axle soundproof cover 36.
  • the internal force bar 34 includes a flat semicircular storage portion 341 stored in the external force bar 33, a flat rectangular box-shaped portion 342 provided on the front side of the storage portion 341, a box
  • the connecting portion 343 is provided on the front side of the shaped portion 342 and communicates with the front axle soundproof cover 31 and covers a part of the front axle 22.
  • the accommodating part 341 and the box-like part 342 have a shape in which upright surface parts 346 to 348 are provided on the outer periphery of the bottom surface parts 344 and 345, and the connection part 343 has a “U” -shaped cross section.
  • the planar portion of the rising surface portion 346 of the accommodating portion 341 is perpendicular to the swinging central axis C1 with respect to the planar portion of the rising surface portion 332 of the external force bar 33, that is, centered on the swinging central axis C1.
  • the external force bar 33 covers the outer side of the accommodating portion 341.
  • the center of curvature of the surface portion of the upright portion 346 made of a curved surface is substantially the same as the position of the oscillation center axis C1. Since the accommodating portion 341 is accommodated in the external force bar 33 without interfering with each other, the upright portions 332 and 346 forming the respective planar portions have a diameter dimension around the oscillation central axis C1.
  • the width of the front and rear of the housing portion 341 and the width of the box-like portion 342 are also swung at the maximum angle. In such a case, the size is set so as not to interfere with the front propeller shaft 20.
  • a large mounting piece 349 is formed on the upper edge of each elevation surface portion 346 of the housing portion 341 so as to project inward and upward.
  • a separate mounting piece 350 and an integral mounting piece 351 are provided on the vertical surface portion 347 of the box-shaped portion 342 by welding or bending, respectively.
  • a flange-shaped mounting piece 352 is provided on the upper edge of the connecting part 343.
  • the internal force bar 34 is attached to the work machine frame 12 side by using bolts or the like that pass through these attachment pieces 349 to 352 or are screwed to them.
  • the internal force bar 34 swings in a state where the accommodating portion 341 of the internal force bar 34 is accommodated in the external force bar 33.
  • the gap formed by the overlapping portion of the rising surface portion 332 of the external force bar 33 and the rising surface portion 346 of the housing portion 341 is not formed.
  • the sound absorbing material 35 affixed to the inside of the upright portion 332 of the external force bar 33 is almost completely closed. In other words, the surface of the sound absorbing material 35 is in a state of being very close to the force that contacts the outer surface of the upright portion 346 of the housing portion 341.
  • the force shown in FIG. 4 is ideally desirable to have an overlapping portion in the entire swing range, but in this embodiment, when the swing is performed at the maximum angle, the external force bar 33 There is a place where there is no overlap between the internal force bar 34 and the internal force bar 34, and the generated sound leaks out.
  • the wheel loader 10 cannot run or work at a high speed, so the volume of the sound that leaks out is very small. In other words, the noise reduction is not hindered.
  • FIG. 6 shows an enlarged view of the rear axle 23 portion. Since the rear axle 23 swings around the swing center axis C2, the main soundproof cover 30 is attached to avoid interference during swinging. A notch 30A (Figs. 3 and 4) is provided, and the generated sound may leak from the notch 30A. Therefore, in the present embodiment, a soundproof structure for preventing such leakage is employed. That is, the periphery of each notch 30A of the main soundproof cover 30 is covered with the soundproof cover 36 for the rear axle.
  • the rear axle soundproof cover 36 includes an inner cover 37 attached to the main soundproof cover 30 side and an external force bar 38 attached to the axle housing of the swinging rear axle 23.
  • the internal force bar 37 is composed of a lower cover member 371 and an upper cover member 372 having different shapes
  • the external force bar 38 has a structure in which a pair of cover members 381 having the same shape are vertically combined.
  • the lower cover member 371 of the internal force bar 37 is attached to the inclined surface 30B of the main soundproof cover 30, and has a box shape having a bottom surface portion 373 and three elevation surfaces 374. Is formed.
  • a pair of front and rear elevation parts 374 are provided with mounting pieces 375, which are attached to the main soundproof cover 30 with bolts or the like penetrating them.
  • the central elevation 374 is provided with a deep “U” -shaped cutout 376.
  • the upper cover member 372 is formed of three rising surfaces 377 that are continuous with the upper edge of each rising surface 374 of the lower cover member 371.
  • a nut member or the like, not shown, is welded to the rear surface of these upright portions 377 at positions corresponding to the through-round holes, and bolts or the like that pass through the mounting pieces provided on the vehicle body frame 11
  • the upper force bar member 372 is attached to the vehicle body frame 11 by being screwed into the nut member.
  • the central elevation 377 is provided with a shallow inverted “U” -shaped notch 378.
  • an engagement piece (not shown) is provided at a joint portion of these cover members 371 and 372, and each engagement piece engages with the inside of the upright portions 374 and 377, so that It ’s not in a position.
  • a notch 378 [opening portion 379 is formed in the canopy material 371, 372, and the axle nosing penetrates through the opening 379.
  • the upper and lower widths of the opening 379 are set to a size that avoids the interference of the swinging axleno and the udging. Then, the center of curvature of the curved surface of the planar portion formed by the central elevations 374, 377 of the cover members 371, 372 is at the position of the oscillation center axis C2.
  • the cover member 381 of the external force bar 38 is also in close proximity to the three elevations 374, 377. It has an elevation 382 facing it.
  • the direction in which the central vertical surface 382 of the external force bar 38 faces the central vertical surfaces 374 and 377 of the internal force bar 37 is the direction orthogonal to the oscillation central axis C2 and is centered on the oscillation central axis C2.
  • the center elevation surface 382 of each cover member 381 is provided with a notch 383 force, and the upper and lower notches 383 sandwich the outer periphery of the axle housing.
  • the cover member 381 is provided with a pair of flange-like attachment pieces 384 that are separated from each other in the front-rear direction.
  • One mounting piece 384 is provided with only a through-round hole that allows a bolt or the like to pass therethrough, but the other mounting piece 384 has a fastening member 385 such as a nut member at a position corresponding to the through-round hole. Are welded. With such a configuration, it is possible to combine a kind of cover member 381 up and down and bolt them together.
  • the cover member 381 is also provided with an engagement piece (not shown) on one side in the front-rear direction, and is engaged with the inside of the elevation surface 382 when combined vertically to prevent mutual displacement. It has become like this. Further, the center of curvature of the curved surface of the planar portion formed by the central elevation surface portion 382 of the pair of cover members 381 is also equal to the position of the oscillation center axis C2. In other words, the central planar portion and the central planar portion on the side of the internal force bar 37 are also positioned concentrically with different diameters around the oscillation center axis C2, and are positioned in a state of being offset from each other in the radial direction. And then.
  • the internal force bar 37 is attached to the vehicle body frame 11 via the main soundproof cover 30. Is still the stationary member according to the present invention.
  • the rear axle 23 to which the external force bar 38 is attached is the swing side member according to the present invention.
  • the soundproof car for the ACL portion and the soundproof cover 36 for the rear axle portion that cover the swinging portion of the articulate portion or the rear axle 23 portion are the soundproof covers according to the present invention.
  • the covers 33, 34 constituting the soundproof cover 32 for the ACL part and the covers 37, 38 constituting the soundproof cover 36 for the rear axle part are provided in substantially the entire inner area.
  • the sound absorbing material 35 is pasted, even when such a sound absorbing material 35 is not pasted at all, it is included in the present invention. Even if the sound absorbing material 35 is not affixed, the sound energy of the generated sound can be attenuated in the gaps formed in the overlapping portions of the covers 33, 34, 37, 38. This can promote noise reduction. That is, the gap functions as a silencer duct. However, in order to achieve further noise reduction, it is desirable to provide the sound absorbing material 35 at least in the gap.
  • the external force bar 33 is attached to the vehicle body frame 11, and the internal force bar 34 is attached to the work machine frame 12.
  • the external force bar is attached to the work machine frame 12.
  • the electric construction machine has been described.
  • the construction machine of the present invention is not limited to this, and it is a hybrid type that uses both electric motor output by electric energy and engine output. It may be. Further, the present invention may be applied to a normal construction machine that uses only engine output.
  • the present invention is applicable to construction machines such as wheel loaders, excavators, motor graders and the like, and particularly to construction machines where low noise is desired.

Landscapes

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

Abstract

L'invention concerne une machine de construction, à savoir une chargeuse sur pneus (10), qui est un véhicule articulé muni d'un châssis de machine de travail (12) basculant par rapport au châssis de corps (11), la section de basculement du châssis de machine de travail (12) étant recouverte par un couvercle d'insonorisation (32) pour une partie d'articulation. Le couvercle d'insonorisation (32) consiste en un couvercle interne (34) fixé au châssis de machine de travail (12) et en un couvercle externe (33) fixé au châssis de corps (11) et recouvrant l'extérieur d'une partie du couvercle interne (34). Le couvercle interne (34) et le couvercle externe (33) sont dotés de parties planes se chevauchant dans la direction radiale, c'est-à-dire la direction coupant perpendiculairement l'axe central (C1) de basculement ; un intervalle permettant une communication entre l'intérieur et l'extérieur du couvercle d'insonorisation (32) est formé entre ces parties planes.
PCT/JP2007/063543 2006-07-07 2007-07-06 Machine de construction WO2008004651A1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
DE112007001547.0T DE112007001547B4 (de) 2006-07-07 2007-07-06 Baumaschine
SE0802641A SE532757C2 (sv) 2006-07-07 2007-07-06 Arbetsmaskin
CN2007800257004A CN101484645B (zh) 2006-07-07 2007-07-06 建筑机械
JP2008523745A JP4833287B2 (ja) 2006-07-07 2007-07-06 建設機械

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2006-188563 2006-07-07
JP2006188563 2006-07-07

Publications (1)

Publication Number Publication Date
WO2008004651A1 true WO2008004651A1 (fr) 2008-01-10

Family

ID=38894617

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2007/063543 WO2008004651A1 (fr) 2006-07-07 2007-07-06 Machine de construction

Country Status (5)

Country Link
JP (1) JP4833287B2 (fr)
CN (1) CN101484645B (fr)
DE (1) DE112007001547B4 (fr)
SE (1) SE532757C2 (fr)
WO (1) WO2008004651A1 (fr)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011218920A (ja) * 2010-04-07 2011-11-04 Maeda Corp アーティキュレート式ダンプトラック
WO2011149069A1 (fr) * 2010-05-27 2011-12-01 日立建機株式会社 Chargeuse à pneus
JP2012132289A (ja) * 2010-12-24 2012-07-12 Komatsu Ltd 建設機械
US20120193881A1 (en) * 2009-09-25 2012-08-02 BAE Systems Hãgglunds Aktiebolag Steering device for articulated vehicle
WO2015163490A1 (fr) * 2015-06-30 2015-10-29 株式会社小松製作所 Chargeuse sur roues
KR20160049749A (ko) * 2014-10-28 2016-05-10 두산인프라코어 주식회사 휠 로더의 드라이브 샤프트 장치
WO2018228665A1 (fr) * 2017-06-12 2018-12-20 Volvo Construction Equipment Ab Machine de travail articulée
JP2020165482A (ja) * 2019-03-29 2020-10-08 株式会社クボタ 作業機

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102211614B (zh) * 2011-05-09 2012-09-26 北京科技大学 一种交流电传动铰接式自卸车
CN102849112B (zh) * 2012-09-20 2015-09-23 中联重科股份有限公司 车架、多轴车辆底盘及工程机械
CN108660997B (zh) * 2017-03-27 2022-08-02 索维亚公司 拖行式除雪机
JP7262358B2 (ja) * 2019-09-30 2023-04-21 株式会社小松製作所 モータグレーダ

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09240507A (ja) * 1996-03-04 1997-09-16 Tokai Rubber Ind Ltd フレーム付き大型車両における遮音構造
JPH11182262A (ja) * 1997-12-18 1999-07-06 Komatsu Ltd エンジンルームの吸音構造及びその吸音体
JP2000038073A (ja) * 1998-07-23 2000-02-08 Hitachi Constr Mach Co Ltd 建設機械
JP2003146002A (ja) * 2001-08-29 2003-05-21 Ryotaro Nakagawa 車輪騒音防止カバー

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19638779C1 (de) * 1996-09-21 1998-04-23 Loehr & Bromkamp Gmbh Gleichlaufdrehgelenk mit Schmiermittelreservoir
JP3952972B2 (ja) * 2003-03-07 2007-08-01 コベルコ建機株式会社 建設機械の冷却装置

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09240507A (ja) * 1996-03-04 1997-09-16 Tokai Rubber Ind Ltd フレーム付き大型車両における遮音構造
JPH11182262A (ja) * 1997-12-18 1999-07-06 Komatsu Ltd エンジンルームの吸音構造及びその吸音体
JP2000038073A (ja) * 1998-07-23 2000-02-08 Hitachi Constr Mach Co Ltd 建設機械
JP2003146002A (ja) * 2001-08-29 2003-05-21 Ryotaro Nakagawa 車輪騒音防止カバー

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9193385B2 (en) * 2009-09-25 2015-11-24 BAE Systems Hägglunds Aktiebolag Steering device for articulated vehicle
US20120193881A1 (en) * 2009-09-25 2012-08-02 BAE Systems Hãgglunds Aktiebolag Steering device for articulated vehicle
JP2011218920A (ja) * 2010-04-07 2011-11-04 Maeda Corp アーティキュレート式ダンプトラック
WO2011149069A1 (fr) * 2010-05-27 2011-12-01 日立建機株式会社 Chargeuse à pneus
JP2011245988A (ja) * 2010-05-27 2011-12-08 Hitachi Constr Mach Co Ltd ホイールローダ
JP2012132289A (ja) * 2010-12-24 2012-07-12 Komatsu Ltd 建設機械
KR20160049749A (ko) * 2014-10-28 2016-05-10 두산인프라코어 주식회사 휠 로더의 드라이브 샤프트 장치
WO2015163490A1 (fr) * 2015-06-30 2015-10-29 株式会社小松製作所 Chargeuse sur roues
JP5973088B2 (ja) * 2015-06-30 2016-08-23 株式会社小松製作所 ホイールローダ
DE112015000090B4 (de) * 2015-06-30 2020-09-17 Komatsu Ltd. Radlader
WO2018228665A1 (fr) * 2017-06-12 2018-12-20 Volvo Construction Equipment Ab Machine de travail articulée
US11519154B2 (en) 2017-06-12 2022-12-06 Volvo Construction Equipment Ab Articulated working machine
JP2020165482A (ja) * 2019-03-29 2020-10-08 株式会社クボタ 作業機
JP7130587B2 (ja) 2019-03-29 2022-09-05 株式会社クボタ 作業機

Also Published As

Publication number Publication date
DE112007001547B4 (de) 2014-10-09
SE0802641L (sv) 2008-12-22
JP4833287B2 (ja) 2011-12-07
JPWO2008004651A1 (ja) 2009-12-03
SE532757C2 (sv) 2010-04-06
CN101484645A (zh) 2009-07-15
CN101484645B (zh) 2011-08-10
DE112007001547T5 (de) 2009-05-28

Similar Documents

Publication Publication Date Title
WO2008004651A1 (fr) Machine de construction
US20110017537A1 (en) Working Vehicle
JP2002356876A (ja) 建設機械
JP4882098B2 (ja) 掘削作業車
JP2003154856A (ja) 旋回式建設機械
JP2001323511A (ja) 建設機械の旋回フレーム
WO2020196538A1 (fr) Véhicule de travail
JPH11181834A (ja) 作業機械のカウンタウエイト
JP4264942B2 (ja) 建設機械のドア装置
JP2008247100A (ja) エンジンフードの取付構造およびこれを備えた建設機械
JP4411459B2 (ja) 掘削作業車
JP4613341B2 (ja) バックホー
JPH1181378A (ja) 旋回作業機
JP6898738B2 (ja) 支持構造
JP2000054429A (ja) 油圧作業機
JP2005163533A (ja) 作業機械
JP4062484B2 (ja) 上部旋回式クローラダンプ
JP2008087929A (ja) 作業機械
JP2001073408A (ja) 建設機械の排気装置
JP2022011615A (ja) 作業機
JP2022186168A (ja) 作業機械
JP2021147771A (ja) 建設機械
JP2020090120A (ja) 作業機
JP2002348916A (ja) 建設機械のサイドミラー
JP2000190742A (ja) 旋回式建設機械

Legal Events

Date Code Title Description
WWE Wipo information: entry into national phase

Ref document number: 200780025700.4

Country of ref document: CN

DPE2 Request for preliminary examination filed before expiration of 19th month from priority date (pct application filed from 20040101)
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 07768275

Country of ref document: EP

Kind code of ref document: A1

WWE Wipo information: entry into national phase

Ref document number: 2008523745

Country of ref document: JP

WWE Wipo information: entry into national phase

Ref document number: 1120070015470

Country of ref document: DE

NENP Non-entry into the national phase

Ref country code: RU

RET De translation (de og part 6b)

Ref document number: 112007001547

Country of ref document: DE

Date of ref document: 20090528

Kind code of ref document: P

122 Ep: pct application non-entry in european phase

Ref document number: 07768275

Country of ref document: EP

Kind code of ref document: A1