EP1176259B1 - Swing type construction machinery - Google Patents

Swing type construction machinery Download PDF

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Publication number
EP1176259B1
EP1176259B1 EP00966535A EP00966535A EP1176259B1 EP 1176259 B1 EP1176259 B1 EP 1176259B1 EP 00966535 A EP00966535 A EP 00966535A EP 00966535 A EP00966535 A EP 00966535A EP 1176259 B1 EP1176259 B1 EP 1176259B1
Authority
EP
European Patent Office
Prior art keywords
frame plate
hose
soil
revolving
hydraulic
Prior art date
Legal status (The legal status 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 status listed.)
Expired - Lifetime
Application number
EP00966535A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1176259A1 (en
EP1176259A4 (en
Inventor
Fumimasa Saeki
Hideki Nagao
Tsutomu Fukumoto
Teruo Irino
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi Construction Machinery Co Ltd
Original Assignee
Hitachi Construction Machinery Co 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 Hitachi Construction Machinery Co Ltd filed Critical Hitachi Construction Machinery Co Ltd
Publication of EP1176259A1 publication Critical patent/EP1176259A1/en
Publication of EP1176259A4 publication Critical patent/EP1176259A4/en
Application granted granted Critical
Publication of EP1176259B1 publication Critical patent/EP1176259B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • 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
    • E02F9/20—Drives; Control devices
    • E02F9/22—Hydraulic or pneumatic drives
    • E02F9/2264—Arrangements or adaptations of elements for hydraulic drives
    • E02F9/2275—Hoses and supports therefor and protection therefor
    • 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
    • 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
    • E02F3/36—Component parts
    • E02F3/38—Cantilever beams, i.e. booms;, e.g. manufacturing processes, forms, geometry or materials used for booms; Dipper-arms, e.g. manufacturing processes, forms, geometry or materials used for dipper-arms; Bucket-arms
    • E02F3/382—Connections to the frame; Supports for booms or arms
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/08—Superstructures; Supports for superstructures
    • E02F9/0808—Improving mounting or assembling, e.g. frame elements, disposition of all the components on the superstructures
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/16—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
    • E02F9/20—Drives; Control devices
    • E02F9/22—Hydraulic or pneumatic drives
    • E02F9/2264—Arrangements or adaptations of elements for hydraulic drives
    • E02F9/2267—Valves or distributors
    • 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
    • E02F9/20—Drives; Control devices
    • E02F9/22—Hydraulic or pneumatic drives
    • E02F9/2264—Arrangements or adaptations of elements for hydraulic drives
    • E02F9/2271—Actuators and supports therefor and protection therefor

Definitions

  • This invention relates to a revolving type construction machine according to the preamble of claim 1 which can be suitably applied, for example, to hydraulic power shovels or excavators to be used for ground excavating operations.
  • Hydraulic power shovels or excavators have been well known as a revolving type construction machine.
  • a hydraulic power shovel type excavator of this sort is largely constituted by a lower track body, an upper revolving body which is rotatably mounted on the lower track body, and a working mechanism which is located in a front portion of the upper revolving body for excavating operations.
  • excavators of this sort include the so-called mini type excavators which are constructed particularly to suit for excavating operations in narrow limited spaces.
  • This type of excavator is provided with an upper revolving body substantially of a circular shape, along with a working mechanism which is vertically and swingablly mounted on the upper revolving body for excavating motions. Therefore, this type of excavator can turn the working mechanism along with the upper revolving body within a predetermined radius of rotation.
  • the upper revolving body of the excavator of this sort is largely constituted by a revolving frame, an operator' s seat which is provided on a left portion of the revolving frame, a counterweight which is attached to a rear or posterior end portion of the revolving frame, an engine which is mounted on the revolving frame at a position on the front side of the counterweight, and a group of control valves which are mounted on a right portion of the revolving frame on the front side of the engine. Further provided on the upper revolving body is a housing cover which is arranged to cover the engine and the control valves.
  • the revolving frame is largely constituted by a bottom frame plate which is formed substantially in a circular shape, right and left vertical frame plates which are erected on the bottom frame plate and extended in forward and backward directions, and a transverse frame plate which is extended in the transverse direction at a position in the vicinity of a working mechanism mount portion and which is securely fixed to the right and left vertical frame plates at the opposite ends thereof.
  • the transverse frame plate serves as a reinforcing member for increasing the strength which prevents the vertical frame plates from falling down.
  • the working mechanism is usually largely constituted by a boom which is mounted on the right and left vertical frame plates of the revolving frame and pivotally supported thereon for excavating motions, an arm which is pivotally connected to the fore end of the boom, a bucket which is pivotally attached to the fore end of the arm.
  • the working mechanism further includes boom cylinders which are provided between the boom and the respective vertical frame plates, an arm cylinder which is provided between the boom and arm, and a bucket cylinder which is provided between the arm and bucket.
  • hydraulic pipes to or from the arm and bucket cylinders are extended longitudinally along the back side of the boom. These hydraulic pipes are connected to the control valves by means of hydraulic hoses including an arm cylinder hydraulic hose and a bucket cylinder hydraulic hose.
  • a revolving frame 101 is providing a bottom frame plate 101A, and right and left vertical frame plates 101B (the right one alone is shown in the drawing) are erected on the bottom frame plate 101A.
  • a transverse frame plate 101C which is inclined downward in the downward direction is provided between the right and left vertical frame plates.
  • a foot portion of a boom 102A which is constituting a working mechanism 102 is pivotally mounted on the right and left vertical frame plates 101B.
  • a partition plate 103 which is extended in the rearward direction is provided in a rear portion of the transverse frame plate 101C. This partition plate 103 is arranged to form a sloped surface along with the transverse frame plate 101C.
  • a housing cover 104 which is arranged to cover an engine (not shown) and other component parts.
  • a group of control valves 105 is provided on the bottom frame plate 101A of the revolving frame 101, at a position in the vicinity of the mount position of the boom 102A and on the outer side of the right vertical frame plate 101B.
  • a hose passage hole 101D is formed in the right vertical frame plate 101A, and the hose passage hole 101D is in the vicinity of the group of control valves 105 and under the lower side of the transverse frame plate 101C.
  • another hose passage hole 103A is formed in the partition plate 103 at a position in the vicinity of a pivoting point of the boom 102A.
  • Hydraulic hoses which are extended toward the boom 102A from the group of control valves 105 are passed through the hose passage holes 101D and 103A in the vertical frame plate 101B and the partition plate 103 and connected to the hydraulic conduit pipes which are provided on the side of the boom 102A.
  • JP 08-232286 A discloses a backhoe support frame of a construction machine, which is constituted by a bottom frame plate (bottom wall), a right and a left vertical frame plate (side walls) extending in forward and rearward directions and supporting a pivotal joint portion for bearing a supporting bolt of a swingable boom.
  • a hydraulic hose is passed through a through-hole in the bottom frame plate and extended along the boom.
  • Hose guide members are provided at the boom above the boom pivot, preventing the loosening of the hydraulic hoses from the boom, and other guiding members are provided for guiding the hydraulic hoses during a pivot movement of the boom.
  • the bottom frame plate of the backhoe support frame is inclined disposed in the forward-downward direction, so that soil fallen from the bucket will slide down on the upper surface of the inclined bottom frame plate and could block the hydraulic hoses in the through-hole thereof.
  • JP 11-002349 A discloses a support frame assembly of a construction machine consisting of a horizontal bottom frame plate and a pair of vertical side plates fixed on said bottom frame plate.
  • An inclined transverse frame plate and a bracket are fixed on the bottom frame plate between the pair of side plates, and the lower end of a boom cylinder is pivotally journalled in said bracket by a bearing pin.
  • a manifold for coupling or exhausting pressurized fluid is provided on the lower portion of the boom cylinder.
  • Hydraulic hoses are connected with the two end portions of the boom cylinder and extended through a hole in the inclined portion of the transverse frame plate. Soil which has fallen out of the bucket will slide on the transverse frame plate and could block the hydraulic hose in the through-hole.
  • the revolving construction machine as disclosed in JP 4-037646 U comprises a lower track body with crawler chains and an upper revolving body rotatably mounted on said lower track body.
  • An engine, a driver seat and a working mechanism are provided on a revolving frame of the upper revolving body.
  • the revolving frame has a supporting structure constituted by two opposite inclined bottom plates. On one of said two bottom plates there are fixed two parallel vertical side plates forming a pivot bearing of a boom. Above the one bottom plate there is disposed a transverse plate.
  • the revolving type construction machine comprises the features of claim 1.
  • Said construction machine includes a revolving frame constituted by a bottom frame plate, right and left vertical frame plates erected on the bottom frame plate to extend in forward and rearward directions of the machine and adapted to pivotally support on front portions thereof a pivotal joint portion of the working mechanism, and a transverse frame plate extended transversely in the vicinity of the pivotal joint portion of the working mechanism and securely fixed at opposite ends thereof to the right and left vertical frame plates; and a hose passage hole provided at least in one of the right and left vertical frame plates and opened in a direction toward the working mechanism at a position higher than a top surface of the transverse frame plate for passing therethrough hydraulic hoses to be connected to or from the working mechanism.
  • the hose passage hole is provided at a position higher than the top side of the transverse frame plate, the respective hydraulic hoses can be passed through the hose passage hole and easily gripped or handled in connecting them to or from hydraulic pipes on the side of the working mechanism.
  • the hose passage hole is provided on the upper side of the transverse frame plate, it is opened in a vertical frame plate in a transverse direction so that falling soil is prevented from entering into interiors of the upper revolving body through the hose passage hole.
  • a space which is provided between the transverse frame plate and the hydraulic hoses can contribute to prevent soil from being piled up on or around the hydraulic hoses.
  • a soil passage can be formed between a top side of the transverse frame plate and the hydraulic hoses, which are passed through the hose passage hole, to let falling soil flow down therealong.
  • falling soil is allowed to flow down through the soil passage between the transverse frame plate and the hydraulic hoses, that is to say, is discharged from the machine without getting into contact with or stagnantly piling up on or around the hydraulic hoses.
  • the revolving type construction machine comprises a couple of vertically spaced upper and lower transverse frame plates extended transversely in the vicinity of the pivotal joint portion of the working mechanism and respectively securely fixed at opposite ends thereof to the right and left vertical frame plates; and a plural number of hydraulic hoses connected to or from hydraulic pipes on the side of the working mechanism via a top side of the upper transverse frame plate.
  • the upper and lower transverse frame plates which are provided between the right and left vertical frame plates contribute to increase the strength which keeps the two vertical frame plates from falling.
  • hydraulic hoses are passed along the top side of the upper transverse frame plate, a space free of hydraulic hoses, which is formed between the two transverse frame plates, can be utilized as a soil passage to get rid of falling soil which would otherwise be allowed to pile up on the upper revolving body of the machine.
  • the soil passage formed between the upper and lower transverse frame plates and arranged to let falling soil flow down therealong.
  • falling soil is allowed to flow down along the soil passage which is formed between the upper and lower transverse frame plates, and discharged from the machine without being allowed to get into contact with or to pile up on or around hydraulic hoses.
  • a hose passage hole can be formed at least in one of the right and left vertical frame plates at a position higher than a top surface of the upper transverse frame plate for passing therethrough hydraulic hoses.
  • the hose passage hole is provided at a position higher than the top side of the upper transverse frame plate, so that the hydraulic hoses can be easily grabbed by hand or can be handled in a facilitated manner when connecting or disconnecting them to or from hydraulic pipes on the part of the working mechanism.
  • the hose passage hole is provided at a position higher than the top surface of the upper transverse frame plate, it is opened in a transverse direction to prevent intrusion of falling soil into interior portions of the upper revolving body.
  • the hydraulic hoses are fixedly retained on the upper transverse frame plate between the right and left vertical frame plates.
  • a group of control valves is provided on a front portion of the bottom frame plate on the outer side of one of the right and left vertical frame plates, and the hydraulic hoses are connected to the control valves at one end thereof.
  • a hose cover can be provided between the right and left vertical frame plates in such a way as to cover the hydraulic hoses.
  • a lower track body of an excavator and at 2 is an upper revolving body which is rotatably mounted on the lower track body 1 through a rotating mechanism 3.
  • a soil removing blade 4 is vertically swingablly attached to the front side of the lower track body 1.
  • a working mechanism 5 is provided on a front portion of the upper revolving body 2.
  • the working mechanism 5 is largely constituted by: a lower boom 6 which is vertically pivotally mounted on vertical frame plates 19 and 20 of a revolving frame 17, which will be described hereinafter, through a pivotal joint portion 6A (see Fig.
  • an upper boom 7 which is pivotally connected to the fore end of the lower boom 6 for swinging motions in rightward and leftward directions
  • an arm retainer 8 which is pivotally connected to the fore end of the upper boom 7 for swinging motions in rightward and leftward directions
  • an arm 9 which is pivotally attached to the arm retainer 8 for vertical swinging motions
  • a bucket 10 which is pivotally supported on a fore end portion of the arm 9.
  • link rod 11 pivotally connected between a fore end portion of the lower boom 6 and the arm retainer 8 is a link rod 11, which link rod 11 forms a parallel link together with the lower boom 6, upper boom 7 and arm retainer 8 thereby to retain the arm 9 (arm retainer 8) constantly in parallel relation with the lower boom 6.
  • a boom cylinder 12 is provided between the revolving frame 17 and the lower boom 6, an arm cylinder 13 is provided between the arm retainer 8 and the arm 9, and a bucket cylinder 14 is provided between the arm 9 and the bucket 10. Furthermore, an offset cylinder 15 is provided between the lower boom 6 and the upper boom 7.
  • a plural number of hydraulic pipes 16 are attached on the back side of the lower boom 6 which faces backward when the lower boom 6 is in an uplifted position, for supplying pressure oil to and from the arm cylinder 13, bucket cylinder 14 and offset cylinder 15.
  • Connected to these hydraulic pipes 16 are offset operating hydraulic hose 37E, bucket operating hydraulic hose 37F and arm operating hydraulic hose 37G which will be described hereinafter.
  • the upper revolving body 2 is largely constituted by the revolving frame 17, operator' s seat 28, engine 30, control valves 35 and housing cover 42, as described in greater detail below.
  • the revolving frame 17 is largely constituted by a bottom frame plate 18 in the form of a flat circular plate, a left-hand vertical frame plate 19 which is erected on the bottom frame plate 18 and extended forward substantially from a center portion of the bottom frame plate 18, a right-hand vertical frame plate 20 which is erected on the bottom frame plate 18 in a spaced position on the right side of the left vertical frame plate 19 and extended in forward and backward direction, and a left rear vertical frame plate 21 which is located at and in association with a rear end of the left vertical frame plate 19.
  • a floor panel 22 ( Fig.
  • the above-mentioned left rear vertical frame plate 21 is provided with a vertical plate portion 21A which is extended parallel with the right vertical frame plate 20, and a connecting plate portion 21A which connects the right and left vertical frame plates 20 and 19 to each other at a position on the front side of the vertical plate portion 21A.
  • a lower transverse frame plate which is provided to extend between the right and left vertical frame plates 20 and 19, at a position in the vicinity of the pivotal joint portion 6A of the lower boom 6.
  • This lower transverse frame plate 23 is constituted by a thick and strong structural member which can prevent the right and left vertical frame plates 20 and 19 from falling down.
  • the lower transverse frame plate 23 is constituted by an inclined plate portion 23A which is inclined gradually downward in the forward direction, and a vertical plate portion 23B which is extended downward from a fore distal end of the inclined plate portion 23A and abutted against the bottom frame plate 18.
  • the lower transverse frame plate 23 is securely fixed by welding, for example, to the right and left vertical frame plates 20 and 19 at the opposite ends of the inclined plate portion 23A and the vertical plate portion 23B.
  • the lower end of the vertical plate portion 23B is likewise securely fixed by welding, for example, to the bottom frame plate 18.
  • an upper transverse frame plate which is provided over the lower transverse frame plate 23 and between the right and left vertical frame plates 20 and 19.
  • the upper transverse frame plate 24 is constituted by a thick and strong structural member which can prevent the right and left vertical frame plates 20 and 19 from falling down, and located in spaced parallel relation with the inclined plate portion 23A of the lower transverse frame plate 23.
  • the opposite ends of the upper transverse frame plate 24 is securely fixed by welding, for example, to the right and left vertical frame plates 20 and 19.
  • Indicated at 25 is a soil passage which is formed between the inclined plate portion 23A of the lower transverse frame plate 23 and the upper transverse frame plate 24.
  • This soil passage 25 provides a passage space where no hydraulic hoses exist, and therefore soil 50 is allowed to tumble down on and along the soil passage without meeting any obstacle.
  • Denoted at 26 is a hose passage hole which is provided in the right vertical frame plate 20. This hose passage hole 26 is located at a position which is closer to the front side and higher than the top side of the upper transverse frame plate 24. Further, the hose passage hole 26 provides an access to hydraulic hoses 37E, 37F and 37G which supply pressure oil to and from the offset cylinder, bucket cylinder and arm cylinder of the working mechanism 5, which will be described hereinafter.
  • the canopy 27 is a canopy (see Figs. 1 and 2 ) which is provided on a left portion of the upper revolving body 2.
  • the canopy 27 is constituted by a plural number of posts or pillars 27A which are erected at suitable intervals in transverse and back and forth directions, and a canopy roof 27B which is mounted on top of the posts 27A. Further, the canopy 27 is fixedly mounted on the bottom frame plate 18 on the front side and on a support frame 41 on the rear side thereof.
  • Indicated at 28 is the operator' s seat which is provided on a stool 28A which is located on the floor panel 22 of the revolving frame 17 under the canopy 27.
  • An operating lever assembly 29 is provided in front of the operator' s seat 28.
  • the operating lever assembly 29 is largely constituted by a lever stand 29A which is mounted on the floor panel 22, a driving lever 29B and a working mechanism control lever 29C which are provided on the top side of the lever stand 29A, and a reducing type pilot valve (not shown) which is located within the lever stand 29A and operated by the working mechanism control lever 29C.
  • Denoted at 30 is an engine (indicated by a broken line in Fig. 2 ) which is mounted transversely on a rear portion of the revolving frame 17.
  • a heat exchanger 31 such as a radiator, oil cooler or the like is located on the right side of the engine 30, while a hydraulic pump 32 is mounted on the left side of the engine 30.
  • the counterweight 33 is attached to the rear side of the revolving frame 17.
  • the counterweight 33 is formed in an arcuate shape which corresponds to the radius of rotation of the upper revolving body 2.
  • Designated at 34 is an operating oil tank (shown in Figs. 2 and 5 ) which is located on a right portion of the revolving frame 17 on the front side of the engine 30 to store therein operating oil for driving hydraulic cylinders and motor.
  • Indicated at 35 is a group of control valves which are located on the right (outer) side of the right vertical frame plate 20 of the revolving frame 17 on the front side of the operating oil tank 34. These control valves 35 are mounted on the bottom frame plate 18 through a valve support member 36. Further, the control valves 35 are constituted by a plural number of directional control valves which are stacked one on the other in the vertical direction.
  • the directional control valves include, from lower to upper side, a blade directional control valve 35A, left and right driving directional control valves 35B and 35C, a spare directional control valve 35D, an offset directional control valve 35E, a bucket directional control valve 35F, an arm directional control valve 35G, a boom directional control valve 35H, and a rotating mechanism directional control valve 35J.
  • the directional control valves 35A to 35J are constituted by mechanically operating type directional control valves and are each connected to the operating lever assembly 29 through a cable (not shown), while the other directional control valves 35D to 35J are constituted by hydraulic pilot type directional control valves and are each connected to a pilot valve of the operating lever assembly 29 through a pilot hose (not shown).
  • the arm directional control valve 35G, bucket directional control valve 35F and offset directional control valve 35E which control the arm cylinder 13, bucket cylinder 14 and offset cylinder 15 of the working mechanism 5, respectively, are located at a position substantially on level with the height of the hose passage hole 26 in the right vertical frame plate 20.
  • these hydraulic hoses 37G, 37F and 37E can take substantially a straight and direct route to the hose passage hole 26 from the respective directional control valves 35G, 35F and 35E. Accordingly, the routing of the hydraulic hoses 37E, 37F and 37G can be facilitated to a considerable degree.
  • hydraulic hoses which are connected to the group of control valves 35, including a blade operating hydraulic hose 37A, driving hydraulic hoses 37B and 37C, offset operating hydraulic hose 37E, bucket operating hydraulic hose 37F, arm operating hydraulic hose 37G, and rotational operating hydraulic hose 37J.
  • the blade directional control valve 35A connected to the blade directional control valve 35A is the blade operating hydraulic hose 37A, which is connected at the opposite end to the soil removing blade 4 through a center joint (not shown). Further, connected to the left and right driving directional control valves 35B and 35C are driving hydraulic hoses 37B and 37C, which are connected to right and left driving motors (not shown) through a center joint, respectively.
  • offset operating hydraulic hose 37E is connected to the offset directional control valve 35E, bucket directional control valve 35F and arm directional control valve 35G, respectively.
  • These offset operating hydraulic hose 37E, bucket operating hydraulic hose 37F and arm operating hydraulic hose 37G are each passed onto the upper transverse frame plate 24 through the hose passage hole 26 in the right vertical frame plate 20, and connected to the hydraulic pipes 16 via the lower side of the pivotal joint portion 6A of the lower boom 6.
  • these hydraulic hoses 37E, 37F and 37G are fixed side by side in an aligned state on the upper transverse frame plate 24 by means of a hose bracket 38.
  • a boom operating hydraulic hose 37H which is connected to the boom cylinder 12 through another boom operating hydraulic hose which is not shown in the drawing.
  • a rotational operating hydraulic hose 37J which is connected to a rotating motor (not shown), that is, to a drive source of the rotating mechanism 3.
  • skirt covers which are provided around the circumference of the revolving frame 17. More particularly, as shown in Fig. 2 , these skirt covers 39 and 40 are arranged to cover the circumference of the revolving frame 17 in continuation from the counterweight 33.
  • the support frame 41 (shown in Figs. 4 and 6 ) which serves to support the canopy 27.
  • This support frame 41 is provided on a rear portion of the revolving frame 17 astride of the engine 30.
  • the support frame 41 is constituted by a plural number of leg members 41A which are located in longitudinally and transversely spaced positions, and a support plate 41B which is set transversely on the leg members 41A.
  • the housing cover 42 is largely constituted by an engine front cover 43 which is erected on the revolving frame 17 in such a way as to cover top and front sides of the engine 30, a right side cover 44 which is located on a right portion of the revolving frame 17 in such a way as to cover the operating oil tank 34 as well as the group of control valves 35, a left cover 45 which is located on the left side and arranged to cover the hydraulic pump 32, and a bonnet 46 which is located on the counterweight 33 and arranged to cover the rear side of the engine 30.
  • Denoted at 47 is a partition plate which is provided between the engine front cover 43 and the lower transverse frame plate 23.
  • this partition plate 47 is constituted by lower and upper plate members 47A and 47B which are connected with each other substantially in a rectangular shape.
  • the upper end of the partition plate 47 is fixed to the engine front cover 43 by screws, while its lower end is fixed to the upper end of the lower transverse frame plate 23 similarly by screws.
  • the partition plate 47 as a whole is arranged to present a gradual downslope in the forward direction. Further, the partition plate 47 serves to stop a gap between the engine front cover 43 and the lower transverse frame plate 23 for the purpose of preventing intrusion of soil into the upper revolving body 2.
  • protector cover 48 which is provided on the front side of the lower transverse frame plate 23.
  • the upper end of this protector cover 48 is fixed to the inclined plate portion 23A of the lower transverse frame plate 23 by screws.
  • the protector cover 48 is provided for the purpose of covering pilot hoses (all not shown in the drawings) which connect pilot valves in the operating lever assembly 29 with the group of control valves 35.
  • the inclined plate portion 23A of the lower transverse frame plate 23, the partition plate 47 and the protector cover 48 are arranged to form a downslope surface in the forward direction. Soil which falls on this downslope surface is discharged to the front side through the soil passage 25.
  • hose cover 49 which is provided between and bolted to the right and left vertical frame plates 20 and 19. This hose cover 49 is provided between a fore end portion of the hose passage hole 26 and the pivotal joint portion 6A of the lower boom 6 to cover the offset operating hydraulic hose 37E, bucket operating hydraulic hose 37F and arm operating hydraulic hose 37G which would otherwise be left in an exposed state on the upper side thereof.
  • the driving lever 29B of the operating lever assembly 29 is tilted back and forth to put the lower track body 1 in travel.
  • other operating lever which is not shown in the drawings can also be tilted to turn the soil removing blade 4 up and down if necessary for removing soil.
  • the working mechanism control lever 29C is tilted in forward, rearward, rightward and leftward directions to turn the upper revolving body 2 on the lower track body 1 or to put the working mechanism 5 for an excavating operation.
  • the excavator according to the present embodiment can be used for an excavating operation in a narrow limited space, in the manner as follows.
  • the lower boom 6 is turned upward and the arm 9 is turned downward as shown in Figs. 1 and 4 to fold the working mechanism 5 into a radius of rotation of the upper revolving body 2.
  • the upper revolving body 2 is turned, for example, toward and excavated soil is dumped onto a transportation vehicle which stands by on the opposite side of the excavator away from an excavating site.
  • the inclined plate portion 23A of the lower transverse frame plate 23, which forms a downslope, the partition plate 47 and the protector cover 48 urge the fallen soil 50 to tumble down in the forward direction, so that the soil is discharged to the front side of the excavator through the soil passage 25, which is provided free of hydraulic hoses between the upper and lower transverse frame plates 24 and 23, thereby to prevent the fallen soil 50 from being stagnantly piled up on the upper revolving body.
  • the hose passage hole 26 is provided in the right vertical frame plate 20 at a position which is higher than the upper transverse frame plate 24, more specifically, higher than the top side of the upper transverse frame plate 24. Therefore, the offset operating hydraulic hose 37E, bucket operating hydraulic hose 37F and arm operating hydraulic hose 37G can be passed to the outer side through the hose passage hole 26, and can be gripped or handled by an operator easily from outside whenever necessary. It follows that these hydraulic hoses 37E, 37F and 37G can be easily connected to the hydraulic pipes 16 on the side of the working mechanism 5 to make their assembling work and replacements very easy.
  • the hose passage hole 26 is formed transversely across the right vertical frame plate 20, so that falling soil 50 and rainwater are prevented from getting into the upper revolving body 2 through the hose passage hole 26. Accordingly, the interior side of the upper revolving body 2 can be kept in a clean state.
  • the upper and lower transverse frame plates 24 and 23 which are provided between the right and left vertical frame plates 20 and 19 contribute to increase the strength which prevents the two vertical frame plates 20 and 19 from falling down.
  • the soil passage 25 is provided between the upper and lower transverse frame plates 24 and 23, free of hydraulic hoses. Therefore, soil 50 which falls off the bucket 10 can be positively discharged to the front side of the machine via the partition plate 47, soil passage 25 and protector cover 48, in the order just mentioned, to prevent soil 50 from piling up on the upper revolving body 2.
  • a poker rod or rods may be used for forcibly discharging piled soil forward because both of the transverse frame plates 23 and 24 are strong enough for this purpose.
  • control valves 35 which are provided on the right side of the right vertical frame plate 20 can be located in the vicinity of the working mechanism 5. Accordingly, it becomes extremely easy to connect the respective control valve 35 to the working mechanism 5 and to complete the connecting work very efficiently.
  • the hose cover 49 is provided between the two vertical frame plates 19 and 20 to cover the offset operating hydraulic hose 37E, bucket operating hydraulic hose 37F and arm operating hydraulic hose 37G. Therefore, it becomes possible to prevent fallen soil 50 from colliding against or piling on these hydraulic hoses 37E, 37F and 37G and causing damages thereto.
  • the hydraulic hoses 37E, 37F and 37G can be fixed in a transversely aligned state on the upper transverse frame plate 24.
  • the upper transverse frame plate 24 is provided at a spaced position over the lower transverse frame plate 23, and the hose passage hole 26 is provided in the right vertical frame plate 20 at a position higher than the top side of the upper transverse frame plate 24.
  • a revolving frame 61 may be constituted by the bottom frame plate 18, the right and left vertical frame plates 20 and 19, left rear vertical frame plate 21, the floor panel 22 and the lower transverse frame plate 23, omitting the upper transverse frame plate 24.
  • the hose passage hole 26 is provided in the right vertical frame plate 20 at the position which is spaced from the top side of the lower transverse frame plate 23. Accordingly, the soil passage 25 can be secured between the hydraulic hoses 37E, 37F and 37G, which are passed through the hose passage hole 26, and the top surface of the lower transverse frame plate 23.
  • the hose passage hole 26 is provided in the right vertical frame plate 20.
  • the present invention is not limited to this particular arrangement.
  • a hose passage hole can be provided in the left vertical frame plate 19.
  • the revolving type construction machine according to the present invention has been described by way of a small-size hydraulic power shovel type excavator.
  • the application of the present invention is not limited to small-size construction machines.
  • a revolving frame of an upper revolving body is constituted by a bottom frame plate, right and left vertical frame plates which are erected on the bottom frame plate to extend in back and forth directions and adapted to support in front portions thereof a pivotal joint portion of a working mechanism, and a transverse frame plate which is extended transversely in the vicinity of the pivotal joint portion of the working mechanism and securely fixed at opposite ends thereof to the right and left vertical frame plates, and a hose passage hole is provided in one of the vertical frame plates and opened toward the working mechanism at a position higher than a top surface of the transverse frame plate. Therefore, the hydraulic hoses which are passed through the hose passage hole can be grabbed by hand and easily connected to or disconnected from hydraulic pipes on the side of the working mechanism in an efficient manner.
  • the hose passage hole is located at a position higher than the top surface of a transverse frame plate but opened in a transverse direction, so that it can prevent passage therethrough of falling soil and its intrusion into interior portions of an upper revolving body, keeping interior portions of the upper revolving body in a clean state.
  • a gap space can be provided between the hydraulic hoses and the transverse frame plate to prevent falling soil from piling up on and around the hydraulic hoses.
  • a soil passage can be formed between the top surface of the transverse frame plate and the hydraulic hoses, which are passed through the hose passage hole, to let falling soil flow down therealong. It follows that falling soil can be urged to flow down along the soil passage and discharged without being allowed to get into contact with or to pile up on the hydraulic hoses.
  • the revolving frame of the upper revolving body is constituted by a bottom frame plate, a couple of right and left vertical frame plates which are erected on the bottom frame plate to extend in back and forth directions and adapted to support on front portions thereof a pivotal joint portion of a working mechanism, a couple of vertically spaced upper and lower transverse frame plates which are extended transversely in the vicinity of a pivotal joint portion of a working mechanism and securely fixed at opposite ends to the right and left vertical frame plates.
  • hydraulic hoses are connected to hydraulic pipes on the side of the working mechanism via a top surface of the upper transverse frame plate, and the two transverse frame plates contribute to increase the strength which keeps the vertical frame plates from falling in.
  • a downslope soil passage can be formed between the upper and lower transverse frame plates to let falling soil flow out therethrough without contacting or piling up on the hydraulic hoses.
  • the hose passage hole is provided at least in one of the right and left vertical frame plates at a position higher than a top surface of the upper transverse frame plate, and the hydraulic hoses are passed to the outer side through the hose passage hole. Accordingly, the hydraulic hoses can be easily grabbed in handling those hoses, permitting to connect or disconnect the hydraulic hoses to or from hydraulic pipes on the part of the working mechanism efficiently in a facilitated manner.
  • the hose passage hole which is provided at a position higher than a top surface of the upper transverse frame plate, is opened in a transverse direction, preventing falling soil from entering interior portions of the upper revolving body through the hose passage hole to keep the interiors of the upper revolving body in a clean state.
  • a plural number of hydraulic hoses to or from the working mechanism can be fixedly retained on the upper transverse frame plate between the right and left vertical frame plates, namely, can be fixed tidily in a transversely aligned form by the use of the upper transverse frame plate.
  • a group of control valves are provided on a front portion of the revolving frame on the transversely outer side of one of right and left vertical frame plates, and the hydraulic hoses are connected to the group of control valves at one end thereof.
  • This arrangements permit to locate the control valves in the vicinity of the working mechanism which is mounted on front portions of the right and left vertical frame plates, and to connect the group of control valves to the working mechanism in an extremely facilitated manner.
  • a hose cover is provided between the right and left vertical frame plates of the revolving frame to cover the hydraulic hoses. Therefore, excavated soil which partly fall over the hydraulic hoses is received by the hose cover and prevented from coming into contact with the hydraulic hoses to protect them against damages and ensure a prolonged service life of these hoses.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Component Parts Of Construction Machinery (AREA)
EP00966535A 1999-10-19 2000-10-17 Swing type construction machinery Expired - Lifetime EP1176259B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP29732599 1999-10-19
JP29732599 1999-10-19
PCT/JP2000/007191 WO2001029330A1 (fr) 1999-10-19 2000-10-17 Machine de construction de type basculant

Publications (3)

Publication Number Publication Date
EP1176259A1 EP1176259A1 (en) 2002-01-30
EP1176259A4 EP1176259A4 (en) 2007-02-21
EP1176259B1 true EP1176259B1 (en) 2009-09-02

Family

ID=17845060

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00966535A Expired - Lifetime EP1176259B1 (en) 1999-10-19 2000-10-17 Swing type construction machinery

Country Status (5)

Country Link
EP (1) EP1176259B1 (ko)
JP (1) JP3377198B2 (ko)
KR (1) KR100420639B1 (ko)
DE (1) DE60042882D1 (ko)
WO (1) WO2001029330A1 (ko)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4693571B2 (ja) * 2005-09-28 2011-06-01 株式会社クボタ バックホー
JP4698443B2 (ja) * 2006-03-02 2011-06-08 株式会社クボタ 旋回作業機
JP5019516B2 (ja) * 2007-02-27 2012-09-05 キャタピラー エス エー アール エル 建設機械における油圧配管配設構造
JP4941089B2 (ja) * 2007-05-15 2012-05-30 コベルコ建機株式会社 上部旋回体及びこれを備えた建設機械
JP6145029B2 (ja) 2013-11-12 2017-06-07 キャタピラー エス エー アール エル 建設機械
JP6011553B2 (ja) * 2014-01-21 2016-10-19 コベルコ建機株式会社 建設機械の配索構造
JP6224565B2 (ja) * 2014-10-03 2017-11-01 株式会社日立建機ティエラ 建設機械
JP6706213B2 (ja) * 2017-03-01 2020-06-03 株式会社日立建機ティエラ 油圧ショベル
JP7217823B2 (ja) * 2018-06-21 2023-02-03 ヤンマーパワーテクノロジー株式会社 旋回作業車
JP7039397B2 (ja) 2018-06-21 2022-03-22 ヤンマーパワーテクノロジー株式会社 旋回作業車
JP7208878B2 (ja) * 2019-09-12 2023-01-19 株式会社日立建機ティエラ 建設機械
JP7377776B2 (ja) * 2020-07-03 2023-11-10 株式会社日立建機ティエラ 建設機械
JP7369311B2 (ja) * 2022-03-09 2023-10-25 ヤンマーパワーテクノロジー株式会社 旋回作業車

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Publication number Priority date Publication date Assignee Title
JPH0437646U (ko) * 1990-07-27 1992-03-30
JPH07180177A (ja) * 1993-12-21 1995-07-18 Hitachi Constr Mach Co Ltd 建設機械
JPH08232286A (ja) * 1995-02-23 1996-09-10 Kubota Corp バックホー
JPH10280474A (ja) * 1997-04-09 1998-10-20 Hitachi Constr Mach Co Ltd 建設機械
US5860233A (en) * 1997-04-14 1999-01-19 Caterpillar Inc. Valve configuration and mounting arrangement
JPH11229433A (ja) * 1998-02-16 1999-08-24 Hitachi Constr Mach Co Ltd 旋回式建設機械
JP3464144B2 (ja) * 1998-03-25 2003-11-05 株式会社クボタ 旋回作業機

Also Published As

Publication number Publication date
KR100420639B1 (ko) 2004-03-02
KR20010093194A (ko) 2001-10-27
DE60042882D1 (de) 2009-10-15
WO2001029330A1 (fr) 2001-04-26
EP1176259A1 (en) 2002-01-30
EP1176259A4 (en) 2007-02-21
JP3377198B2 (ja) 2003-02-17

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