WO2011142235A1 - 建設機械の旋回装置 - Google Patents
建設機械の旋回装置 Download PDFInfo
- Publication number
- WO2011142235A1 WO2011142235A1 PCT/JP2011/059936 JP2011059936W WO2011142235A1 WO 2011142235 A1 WO2011142235 A1 WO 2011142235A1 JP 2011059936 W JP2011059936 W JP 2011059936W WO 2011142235 A1 WO2011142235 A1 WO 2011142235A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- lubricating oil
- planetary gear
- guide member
- plate portion
- sun gear
- Prior art date
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Classifications
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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
- E02F9/08—Superstructures; Supports for superstructures
- E02F9/10—Supports for movable superstructures mounted on travelling or walking gears or on other superstructures
- E02F9/12—Slewing or traversing gears
- E02F9/121—Turntables, i.e. structure rotatable about 360°
- E02F9/123—Drives or control devices specially adapted therefor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
- B66C23/62—Constructional features or details
- B66C23/84—Slewing gear
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/08—Superstructures; Supports for superstructures
- E02F9/10—Supports for movable superstructures mounted on travelling or walking gears or on other superstructures
- E02F9/12—Slewing or traversing gears
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/08—Superstructures; Supports for superstructures
- E02F9/10—Supports for movable superstructures mounted on travelling or walking gears or on other superstructures
- E02F9/12—Slewing or traversing gears
- E02F9/121—Turntables, i.e. structure rotatable about 360°
- E02F9/126—Lubrication systems
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/04—Features relating to lubrication or cooling or heating
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/04—Features relating to lubrication or cooling or heating
- F16H57/042—Guidance of lubricant
- F16H57/0427—Guidance of lubricant on rotary parts, e.g. using baffles for collecting lubricant by centrifugal force
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/04—Features relating to lubrication or cooling or heating
- F16H57/0467—Elements of gearings to be lubricated, cooled or heated
- F16H57/0479—Gears or bearings on planet carriers
Definitions
- the present invention relates to a swing device of a construction machine which is suitably used for a swing type construction machine such as a hydraulic shovel, a hydraulic crane or the like.
- construction machines such as hydraulic shovels and hydraulic cranes are composed of a lower traveling body and an upper revolving body rotatably mounted on the lower traveling body, and between the upper revolving body and the lower traveling body A pivoting device is provided for pivotally driving the upper pivoting body on the lower traveling body.
- the pivoting device includes a tubular housing provided with a pivoting motor on the upper end and a lower end attached to the upper pivoting body, a planetary gear reduction mechanism provided in the housing and decelerating the rotation of the pivoting motor, and the inside of the housing And an output shaft for outputting the rotation decelerated by the planetary gear reduction mechanism, and a pivot provided between the upper rotating body and the lower traveling body provided on the lower end side of the output shaft It has a pinion which meshes with the inner ring of a ring (patent documents 1, patent documents 2).
- the planetary gear reduction mechanism meshes with the sun gear rotating in synchronization with the rotation shaft of the swing motor, and the sun gear and an internal gear (ring gear) provided inside the housing.
- a plurality of planet gears that revolve while rotating around the gears, and a plurality of support shafts for supporting the planet gears.
- the planet gears can be rotated via bearings for planet gears on the support shafts.
- a carrier provided on the Lubricating oil for lubricating the planetary gear reduction mechanism is stored in the housing.
- the planetary gear reduction mechanism is configured of a two-stage planetary gear reduction mechanism connected in series in the torque transmission direction.
- the planetary gear reduction mechanism is configured of a three-stage planetary gear reduction mechanism connected in series in the torque transmission direction.
- the turning device according to Patent Document 1 is configured to immerse the planetary gear reduction mechanism in the lubricating oil held in the housing so that the planetary gear can be smoothly rotated over a long period of time.
- an oil hole is provided on a support shaft that supports the planetary gear, and lubricating oil is circulated to the planetary gear bearing through the oil hole.
- the above-described prior art turning device is configured to immerse the planetary gear reduction mechanism in the lubricating oil held in the housing, so when the sun gear is rotated at high speed by the turning motor, the sun gear and each planetary gear The lubricating oil scatters upward (in a remarkable case, spouts) from the meshing portion of the.
- the lubricating oil around the planetary gear bearings rotatably supporting the planetary gears runs short, and the planetary gear bearings can not be lubricated efficiently.
- damage such as seizure easily occurs in the planetary gear bearing, and there is a possibility that the durability of the planetary gear bearing can not be sufficiently ensured.
- the present invention has been made in view of the above-described problems of the prior art, and a revolving device of a construction machine capable of efficiently lubricating a planet gear bearing rotatably supporting each planet gear constituting a planet gear reduction mechanism.
- the purpose is to provide.
- a cylindrical housing provided with a swing motor on the upper end and a lower end attached to the upper swing body, and a planet provided in the housing and decelerating the rotation of the swing motor.
- a gear reduction mechanism an output shaft extending upward and downward in the housing and outputting the rotation reduced by the planetary gear reduction mechanism, and a lower end side of the output shaft, the upper swing body and the lower traveling And a pinion engaged with the inner ring of the turning wheel provided between the body and the sun gear, wherein the planetary gear reduction mechanism meshes with the sun gear and the sun gear and an internal tooth provided inside the housing.
- the planet gears can be rotated via bearings for planet gears on the support shafts.
- the turning device for a construction machine comprising holding the lubricating oil for lubricating the planetary gear reduction mechanism.
- the feature of the configuration adopted by the present invention covers the meshing portion between the sun gear and each planetary gear at the upper position of the planetary gear reduction mechanism, and scatters from this meshing portion.
- the lubricating oil guide member is provided to receive the lubricating oil and guide it to the planetary gear bearing.
- the lubricating oil guide member is provided at the upper position of the planetary gear reduction mechanism, the lubricating oil guide member scatters (jets out in a remarkable case) from the meshing portion between the sun gear and each planetary gear.
- the lubricating oil can be received and led to a planetary gear bearing rotatably supporting each planetary gear. Therefore, the planetary gear bearing can be lubricated efficiently, the durability of the planetary gear bearing can be enhanced, and the life of the turning device can be improved.
- the lubricating oil guide member can also prevent the scattered or jetted lubricating oil from adhering to the swing motor provided above the planetary gear reduction mechanism, or entering into the swing motor. Therefore, even when the swing motor is an electric motor, it is possible to prevent the deterioration of the performance, durability, and the like of the electric motor due to the entry of lubricating oil, and it is possible to improve the reliability of the swing device.
- the lubricating oil guide member has a shaft insertion hole through which the rotation shaft of the swing motor is inserted, and a donut shaped guide covering the entire meshing portion between the sun gear and each planetary gear It consists in being comprised by the member (annular guide member).
- the lubricating oil guide member is constituted by the doughnut-shaped guide member (annular guide member), the meshing portion between the sun gear and each planetary gear can be covered over the entire circumference, and from this meshing portion You can be sure to receive the scattered or sprayed lubricating oil. Therefore, a large amount of lubricating oil can be introduced to the planetary gear bearing, and the intrusion of the lubricating oil into the electric motor can be more reliably prevented.
- the collar portion extending toward the inner peripheral surface of the housing is provided on the outer peripheral side of the lubricating oil guide member over the entire periphery.
- the flange portion is provided on the outer peripheral side of the lubricating oil guide member over the entire periphery, the flange portion suppresses rising of the liquid surface of the lubricating oil in the vicinity of the inner peripheral surface of the housing. It is possible to prevent the liquid surface of the lubricating oil from being inclined in the form of a concave cone (disc shape) with the rotation of the planetary gear reduction mechanism. As a result, the meshing portion between the sun gear and each planetary gear can be always immersed in the lubricating oil, and the meshing portion between the sun gear and each planetary gear can be reliably lubricated.
- the lubricating oil guide member is formed of a plurality of divided guide members, and the divided guide members individually cover the meshing portions of the sun gear and the planetary gears. It is.
- the lubricating oil guide member is constituted by the divided guide members, for example, when any divided guide member is damaged, only the damaged divided guide member may be replaced, and the other divided guides The member can be used as it is. For this reason, while being able to replace
- the lubricating oil guide member includes a bottom plate portion attached to the carrier, and an upper portion of the bottom plate portion, which rises upward and extends to the rotation shaft of the swing motor, a meshing portion of the sun gear and the planetary gear.
- the cover plate portion is configured to include a cover plate portion and a lubricant oil passage which is provided in the bottom plate portion and which leads the lubricating oil flowing down to the bottom plate portion side along the cover plate portion to the planetary gear bearing.
- the cover plate can reliably receive the lubricating oil scattered or jetted from the meshing portion between the sun gear and each planetary gear, and the lubricating oil received by the cover plate can be used for the planetary gear through the lubricating oil passage. It can be reliably led to the bearing.
- the support shaft of the carrier is provided with an oil hole for guiding the lubricating oil to the bearing for the planetary gear, and the lubricating oil passage of the lubricating oil guide member is provided at a portion corresponding to the oil hole of the support shaft. It can be.
- the lubricating oil led to the lubricating oil passage of the lubricating oil guide member can be reliably guided to the planetary gear bearing through the oil hole.
- a pair of support shafts of the carrier is interposed from the radial direction, and the bottom plate portion and the cover plate portion
- the lubricating oil passage may be provided between the respective partition plates.
- the partition plate is provided between the cover plate portion and the bottom plate portion, the strength of the lubricating oil guide member can be secured by this partition plate.
- lubricating oil adhering to the cover plate and flowing in the rotational direction of the carrier can be blocked by the partition plate and this lubricating oil can be guided to the lubricating oil passage, lubrication of the planetary gear bearing can be performed more efficiently.
- the rotational direction of the lubricating oil guide member attached to the carrier may be either forward or reverse, regardless of the direction of rotation. The lubricating oil can be reliably guided to the lubricating oil passage by the partition plate, and the lubrication of the planetary gear bearing can be performed more efficiently.
- FIG. 3 is an enlarged sectional view showing a swing motor, a housing, a planetary gear reduction mechanism, a toroidal guide member and the like in FIG. 2;
- FIG. 4 is an enlarged cross-sectional view showing a sun gear, a planetary gear, a carrier, a support shaft, an oil hole, a bearing for a planetary gear, a toroidal guide member, a lubricating oil passage and the like in FIG.
- FIG. 8 is a cross-sectional view of the toroidal guide member as viewed in the direction of arrows IX-IX in FIG. 7; It is the same perspective view as FIG. 5 which shows the housing of the turning apparatus by the 2nd Embodiment of this invention, a division
- FIG. 5 shows the housing of the turning apparatus by the 2nd Embodiment of this invention, a division
- FIG. 11 shows the division
- FIG. 1 to 9 show a first embodiment of a swing device for a construction machine according to the present invention.
- reference numeral 1 denotes a lower traveling body of a hydraulic shovel
- 2 denotes an upper revolving structure pivotally mounted on the lower traveling body 1.
- the upper swing body 2 has a swing frame 3, and a building cover 4, a cab box 5, a counterweight 6 and the like are provided on the swing frame 3.
- a working device 7 for performing a digging operation and the like of earth and sand is provided so as to be capable of raising and lowering.
- a pivoting device 8 is provided between the lower traveling body 1 and the upper pivoting body 2.
- the pivoting device 8 is, as shown in FIG. 2, a mechanical brake 9, an electric motor 10 as a pivoting motor, and
- the speed reduction gear 11 and the turning wheel 37 are roughly configured.
- Reference numeral 11 denotes a reduction gear composed of three reduction gears, and the reduction gear 11 decelerates the rotation of the rotation shaft 10A of the electric motor 10 and outputs the rotation to the output shaft 33.
- the reduction gear 11 is configured by a housing 12 described later, planetary gear reduction mechanisms 16, 23, 28, an output shaft 33, and the like.
- a cylindrical housing 12 is disposed on the upper and lower sides of the swing frame 3 of the upper swing body 2, and the lower housing 12 A is mounted on the upper surface side of the swing frame 3 using a bolt 13. And an upper housing 12B mounted on the lower housing 12A using a bolt 14.
- the casing 10B of the electric motor 10 is attached to the upper end opening of the upper housing 12B using a bolt 15.
- the housing 12 holds a lubricating oil L for lubricating the planetary gear reduction mechanisms 16, 23, 28 described later.
- a seal member (not shown) is provided in a fluid-tight manner between the inner peripheral surface of the lower housing 12A and the outer peripheral surface of the output shaft 33 described later.
- the lubricating oil L is contained so as to immerse 23, 28.
- Reference numeral 16 denotes a first stage planetary gear reduction mechanism provided in the housing 12 under the electric motor 10, and the planetary gear reduction mechanism 16 includes a sun gear 17, planetary gears 18 and a carrier 19 described later. And so on.
- a sun gear 17 is spline-connected to the rotation shaft 10A of the electric motor 10.
- the sun gear 17 is rotatably disposed on a sun gear 24 described later.
- the sun gear 17 rotates integrally with the rotation shaft 10A of the electric motor 10, and transmits this rotation to each planetary gear 18 described later.
- Reference numeral 18 denotes, for example, three (only one shown) planetary gears meshing with an internal gear (ring gear) 12C provided inside the housing 12 and the sun gear 17. These planetary gears 18 are carriers 19 described later.
- the respective support shafts 19 B are rotatably supported via planet gear bearings 20.
- Each planetary gear 18 revolves while rotating around the sun gear 17 as the sun gear 17 rotates.
- a carrier 19 rotatably supports the planet gears 18, and the carrier 19 projects from a disk-shaped support plate 19A having a diameter smaller than the tip diameter of the inner teeth 12C, and the upper surface of the support plate 19A. It is comprised by the column-shaped, for example, three support shafts 19B provided. In each of the support shafts 19B, only the base end side (lower end side) is cantilevered by the support plate 19A, and the planet gears 18 are rotatably provided on the support shafts 19B via the planetary gear bearings 20. There is.
- Screw holes 19C are formed in the tip end surface (upper end surface) of each support shaft 19B, and a donut-shaped guide member (annular guide member) 38 described later is formed using a coupling screw 21 screwed into each screw hole 19C. Is configured to be attached.
- each support shaft 19B is provided with an oil hole 19D for guiding the lubricating oil L to the planetary gear bearing 20.
- the oil holes 19D open at the tip end face of each support shaft 19B as shown in FIG. 4 and extend in parallel to the central axes of the respective support shafts 19B and the central axes of the respective support shafts 19B. It extends in the orthogonal direction, one side is communicated with the vertical hole 19D1, and the other side is constituted by the horizontal hole 19D2 opened at a position facing the planetary gear bearing 20 on the outer peripheral surface of each support shaft 19B.
- a hole spline portion 19E is formed at the center of the support plate 19A, and the hole spline portion 19E is splined to a sun gear 24 described later. Therefore, the carrier 19 rotatably supports the planet gears 18 by the support shafts 19 B, and rotates as the planet gears 18 revolve around the sun gear 17 and transmits this rotation to the sun gear 24. It is.
- the planetary gear bearing is a bearing that rotatably supports the planetary gear 18 with respect to the support shaft 19 B of the carrier 19.
- a plate 22 is mounted on the tip end side (upper end side) of each support shaft 19B of the carrier 19.
- the plate 22 reduces sliding resistance with the upper surface of each planetary gear 18 and a toroidal guide described later This is for reducing the sliding resistance with the member 38.
- the plate 22 also has a function to prevent each planetary gear 18 from axially pulling out from each support shaft 19B in cooperation with the donut shaped guide member 38 attached to the carrier 19 using the coupling screw 21. ing.
- Reference numeral 23 denotes a second stage (middle stage) planetary gear reduction mechanism provided in the housing 12 under the first stage planetary gear reduction mechanism 16 and the planetary gear reduction mechanism 23 is a sun gear described later. 24, each planetary gear 25, a carrier 26, and the like.
- a sun gear 24 is spline-connected to the hole spline portion 19E of the first stage carrier 19.
- the sun gear 24 is rotatably disposed on a sun gear 29 described later.
- the sun gear 24 rotates integrally with the first stage carrier 19 and transmits this rotation to each of the planet gears 25 described later.
- each of the planetary gears 25 has an internal tooth (ring gear) 12D provided inside the housing 12 and a sun It meshes with the gear 24.
- Each planetary gear 25 revolves while rotating around the sun gear 24 as the sun gear 24 rotates.
- a carrier 26 rotatably supports the planet gears 25.
- a hole spline portion 26A splined to the sun gear 29 is formed at the center of the carrier 26.
- a plurality of (one only shown) pins 27 are fixed to the carrier 26 so as to surround the hole spline portion 26A.
- the carrier 26 rotatably supports the planetary gear 25 by the pins 27, and each planetary gear 25 revolves while rotating around the sun gear 24, The revolving force of the planetary gear 25 is transmitted to the sun gear 29.
- each planetary gear 30, and the carrier 31 are configured.
- a sun gear 29 is spline-connected to the hole spline portion 26A of the second stage carrier 26, and the sun gear 29 is rotatably disposed on an output shaft 33 described later.
- the sun gear 29 rotates integrally with the second stage carrier 26 and transmits this rotation to each of the planet gears 30 described later.
- a plurality of (one only shown) planetary gears 30 rotatably supported by a carrier 31 described later are provided, and each of the planetary gears 30 is an internal tooth (ring gear) 12E provided inside the housing 12 and a sun It meshes with the gear 29.
- Each planetary gear 30 revolves while rotating around the sun gear 29 as the sun gear 29 rotates.
- a carrier 31 rotatably supports the planet gears 30, and the carrier 31 is formed with a hole spline portion 31A which is splined to an axial spline portion 33A of an output shaft 33 described later. Further, a plurality of (only one is shown) pins 32 are fixed to the carrier 31 so as to surround the hole spline portion 31A.
- the carrier 31 rotatably supports the planetary gear 30 by the pins 32, and each planetary gear 30 revolves while rotating around the sun gear 29.
- the revolution force of the planetary gear 30 is transmitted to the output shaft 33.
- An output shaft 33 extends upward and downward in the housing 12, and the output shaft 33 is rotatably attached to the lower housing 12A via the upper bearing 34 and the lower bearing 35, and the electric motor 10 is rotated
- the respective planetary gear reduction mechanisms 16, 23, 28 reduce the speed by three steps and output the same.
- a shaft spline portion 33A projecting upward from the upper bearing 34 is integrally provided on one side (upper side) in the axial direction of the output shaft 33, and the shaft spline portion 33A is provided on the third stage carrier 31. It spline-joins to the provided hole spline part 31A.
- a pinion 36 is integrally provided on the lower end side of the output shaft 33.
- the pinion 36 projects downward from the housing 12 and meshes with an internal tooth 37D of a turning wheel 37 described later.
- the pinion 36 transmits the rotation of the output shaft 33, which has been reduced in three steps by the planetary gear reduction mechanisms 16, 23, 28, to an inner ring 37A of a turning wheel 37 described later.
- the lubricating oil L for lubricating the planetary gear reduction mechanisms 16, 23, 28, the upper bearing 34, and the lower bearing 35 is held, and the oil surface of the lubricating oil L is the first stage.
- the sun gear 17 constituting the planetary gear reduction mechanism 16, each planetary gear 18 and the like reach a position where they are immersed about half.
- Reference numeral 37 denotes a swing ring provided between the upper swing body 2 and the lower traveling body 1, and the swing ring 37 is an inner ring 37A fixed to a circle member (not shown) of the lower traveling body 1 and a swing frame It comprises an outer ring 37B fixed to the lower surface 3 and a plurality of steel balls 37C (only one is shown) disposed between the inner ring 37A and the outer ring 37B.
- inner teeth 37D are formed over the entire circumference.
- reference numeral 38 denotes a toroidal guide member (annular guide member) as a lubricating oil guide member.
- the doughnut-shaped guide member 38 is provided at the upper position of the first stage planetary gear reduction mechanism 16 and covers the meshing portion between the sun gear 17 and each planetary gear 18 The lubricating oil L scattered or ejected from the meshing portion is guided to the planetary gear bearing 20.
- the doughnut-shaped guide member 38 is made of a lightweight and strong material such as a synthetic resin or an aluminum alloy, and includes a bottom plate 39, a cover plate 40, a plurality of partition plates 41, and a lubricating oil passage 42. And the collar portion 43.
- Reference numeral 39 denotes an annular bottom plate attached to the carrier 19 of the planetary gear reduction mechanism 16.
- the bottom plate 39 has a shaft insertion hole 39A at the center thereof through which the rotation shaft 10A of the electric motor 10 is inserted.
- Screw insertion holes 39B are provided at positions of the bottom plate 39 corresponding to the screw holes 19C of the support shaft 19B.
- the bottom plate 39 can be attached to the carrier 19 by screwing the coupling screw 21 into the screw hole 19C through the screw insertion hole 39B.
- An annular cover plate 40 covers the meshing portion between the sun gear 17 and each planetary gear 18.
- the cover plate portion 40 is formed in a substantially convex curved shape (dome shape) which rises upward from the bottom plate portion 39 and extends to the rotation shaft 10A of the electric motor 10, and a shaft through which the rotation shaft 10A is inserted An insertion hole 40A is provided.
- the inner diameter of the shaft insertion hole 40A is set smaller than the inner diameter of a virtual circle (reference pitch circle of the sun gear 17) connecting the meshing portions of the sun gear 17 and the planetary gears 18.
- the inner surface of the cover plate 40 is a horizontal surface 40B whose inner diameter side is parallel to the upper surface of the bottom plate 39, and the outer diameter side is directed from the horizontal surface 40B to the upper surface of the bottom plate 39 It is a continuous concave curved surface 40C.
- the carrier 19 flows down to the upper surface of the bottom plate 39 along the concave curved surface 40C by the centrifugal force accompanying the rotation of the carrier 19, and is guided to the lubricating oil passage 42 described later.
- Tool insertion holes are respectively provided at positions in the cover plate portion 40 corresponding to the respective screw insertion holes 39B of the bottom plate portion 39 in the vertical direction. Then, the coupling screw 21 is screwed into the screw hole 19C of the carrier 19 (support shaft 19B) through the tool insertion hole, and is fastened using a tool such as a driver, whereby the donut shaped guide member 38 is fixed to each support shaft 19B.
- the bottom plate 39 is configured to be attached. After the donut-shaped guide member 38 is attached using the coupling screw 21 as described above, it is preferable to close the respective tool insertion holes using a sealing plug or the like.
- a plurality of (for example, six) partition plates 41 are provided between the bottom plate portion 39 and the cover plate portion 40.
- Each of the partition plates 41 has an annular shape between the bottom plate portion 39 and the cover plate portion 40. The space is divided in the radial direction.
- the partition plates 41 are provided so as to form a pair sandwiching the support shaft 19B of the carrier 19 from the radial direction, adhere to the horizontal surface 40B of the cover plate portion 40 and the concave curved surface 40C, and are circumferentially It has a role of blocking the lubricating oil L flowing to the above and guiding the lubricating oil L to the lubricating oil passage 42 described later.
- Reference numeral 42 denotes a lubricating oil passage provided radially inward of the base end portion of the cover plate portion 40 in the bottom plate portion 39.
- the lubricating oil passage 42 is located between the pair of partition plates 41 sandwiching the support shaft 19B of the carrier 19 in the radial direction, and is provided at a position corresponding to the oil hole 19D provided in the support shaft 19B. There is. That is, with the bottom plate portion 39 of the donut shaped guide member 38 attached to the support shaft 19B of the carrier 19 using the coupling screw 21, the oil hole 19D provided in the support shaft 19B and the lubricating oil passage 42 communicate with each other. Is configured.
- the lubricating oil L that has flowed down toward the bottom plate 39 along the inner side surface of the cover plate 40 and the side surface of the partition plate 41 when the turning device 8 operates is a planet through the lubricating oil passage 42 and the oil hole 19D. It is configured to be guided to the gear bearing 20.
- Reference numeral 43 denotes a ridge portion provided on the outer peripheral side of the doughnut-shaped guide member 38 over the entire periphery.
- the flange portion 43 is obtained by extending the bottom plate portion 39 to the outer diameter side from the connection portion between the bottom plate portion 39 and the cover plate portion 40. That is, the collar portion 43 annularly extends from the joint portion of the bottom plate portion 39 and the cover plate portion 40 toward the inner peripheral surface of the housing 12, and the outer peripheral edge portion of the collar portion 43 is an inner tooth 12 C of the housing 12. It extends to a position covering the meshing portion between the two and each planetary gear 18.
- the liquid level of the lubricating oil L in the vicinity of the inner peripheral surface of the housing 12 rises by the centrifugal force accompanying the rotation of the carrier 19 and the like, and the liquid surface is inclined in a concave conical shape (circular dish shape) It has a function of suppressing the problem, and it is possible to reliably lubricate the meshing portion between the first stage sun gear 17 and each planetary gear 18.
- the pivoting device 8 has the above-described configuration, and when the rotating shaft 10A of the electric motor 10 rotates, the rotating shaft 10A rotates in three stages by the planetary gear reduction mechanisms 16, 23, 28. After being decelerated and transmitted to the output shaft 33, the pinion 36 rotates with a large rotational force (torque).
- the pinion 36 revolves along the inner ring 37A while meshing with the inner teeth 37D provided on the inner ring 37A of the turning ring 37, and the revolving force of the pinion 36 is transmitted to the turning frame 3 through the housing 12 to achieve the upper turning.
- the entire body 2 pivots on the undercarriage 1.
- the rotating shaft 10A of the electric motor 10 rotates at high speed, and the lubricating oil L is transmitted from the meshing portion between the sun gear 17 and the planet gears 18 that constitute the first stage planetary gear reduction mechanism 16. Scatter or blow upwards.
- the doughnut-shaped guide member 38 mounted above the first stage planetary gear reduction mechanism 16 receives the lubricating oil L scattered or ejected from the meshing portion between the sun gear 17 and each planetary gear 18 and The received lubricating oil L is guided to a planetary gear bearing 20 that rotatably supports each planetary gear 18.
- the lubricating oil L scattered or spouted from the meshing portion between the sun gear 17 and each planetary gear 18 is of the cover plate portion 40 constituting the doughnut-shaped guide member 38. It adheres to the horizontal surface 40B, the concave curved surface 40C, and the side surface of the partition plate 41.
- the lubricating oil L thus attached is rotated outward in the rotational direction based on the centrifugal force accompanying the rotation of the doughnut-shaped guide member 38 which rotates with the carrier 19, that is, the bottom plate portion along the concave curved surface 40C of the cover plate portion 40. Go down to the 39 side.
- the lubricating oil L that has flowed down to the bottom plate portion 39 flows into the oil hole 19D provided on the support shaft 19B of the carrier 19 through the lubricating oil passage 42, and for the planetary gear through the vertical hole 19D1 and the horizontal hole 19D2 of the oil hole 19D.
- the bearing 20 is supplied to lubricate the planetary gear bearing 20.
- the lubricating oil L is blocked by a partition plate 41 provided between the bottom plate portion 39 and the cover plate portion 40.
- the lubricating oil L accumulated between the pair of partition plates 41 can be efficiently led to the lubricating oil passage 42, and a large amount of lubricating oil L can be introduced through the oil holes 19D provided in the support shaft 19B of the carrier 19. It can be supplied to the planetary gear bearing 20.
- the donut shaped guide member 38 provided above the first stage planetary gear reduction mechanism 16 meshes the sun gear 17 of the first stage with each planetary gear 18.
- the lubricating oil L scattered or ejected from the portion can be received, and the received lubricating oil L can be guided to the planetary gear bearings 20 that rotatably support the respective planetary gears 18. Therefore, the planetary gear bearing 20 can be lubricated efficiently, and the durability of the planetary gear bearing 20, and in turn, the life of the turning device 8 can be improved.
- the lubricating oil L scattered or jetted from the meshing portion between the sun gear 17 and each planetary gear 18 is blocked by the donut shaped guide member 38, so the electric motor provided above the first stage planetary gear reduction mechanism 16 It is also suppressed that the lubricating oil L adheres to 10 or infiltrates into the electric motor 10. Therefore, it is possible to prevent the deterioration of the performance, durability and the like of the electric motor 10 due to the entry of the lubricating oil L, and the reliability of the turning device 8 can be enhanced.
- the cover plate portion 40 of the doughnut-shaped guide member 38 receiving the lubricating oil L covers the meshing portion between the sun gear 17 and each planetary gear 18 over the entire circumference, so that the lubricating oil scattered or spouted from this meshing portion You can receive L reliably. Therefore, the amount of the lubricating oil L introduced to the planetary gear bearing 20 can be increased, and the entry of the lubricating oil L into the electric motor 10 can be reliably prevented.
- the doughnut-shaped guide member 38 includes the bottom plate portion 39, the cover plate portion 40, and the lubricating oil passage 42, the lubricant scattered or spouted from the meshing portion between the sun gear 17 and each planetary gear 18 by the cover plate portion 40
- the oil L can be reliably received, and the lubricating oil L received by the cover plate portion 40 can be reliably guided to the lubricating oil passage 42.
- the support shaft 19B of the carrier 19 is provided with the oil hole 19D in communication with the lubricating oil passage 42. Therefore, the lubricating oil L led to the lubricating oil passage 42 is used for planetary gear through the oil hole 19D.
- the bearing 20 can be reliably supplied.
- the partition plate 41 can ensure the strength of the doughnut-shaped guide member 38. That is, since the cover plate portion 40 and the bottom plate portion 39 are reinforced by the partition plate 41, the deformation of the cover plate portion 40 and the bottom plate portion 39 can be suppressed and damage can be prevented. Further, the lubricating oil L that has flowed down from the cover plate portion 40 to the bottom plate portion 39 is blocked by the partition plate 41 from flowing in the rotational direction of the doughnut-shaped guide member 38, whereby a large amount of lubricating oil L is lubricated in the lubricating oil passage 42. Thus, the planetary gear bearing 20 can be lubricated efficiently.
- the rotational direction of the doughnut-shaped guide member 38 attached to the carrier 19 may be either forward or reverse.
- the flow of the lubricating oil L can be blocked by the rear side partition plate 41, and the lubricating oil L can be reliably guided to the lubricating oil passage 42, and the planetary gear bearing 20 can be lubricated efficiently.
- the collar portion 43 is provided on the outer peripheral side of the donut-shaped guide member 38 over the entire periphery, the liquid surface of the lubricating oil L in the vicinity of the inner peripheral surface of the housing 12 rises by the collar portion 43 It is possible to prevent the liquid surface from being inclined in the form of a concave cone (round plate). As a result, the shortage of the lubricating oil L around the first stage sun gear 17 can be suppressed, and the meshing portion between the sun gear 17 and each planetary gear 18 can be appropriately lubricated.
- FIGS. 10 to 12 show a second embodiment of the present invention.
- the feature of the present embodiment is that the lubricating oil guide member is constituted by a plurality of divided guide members.
- the same components as those in the first embodiment described above are denoted by the same reference numerals, and the description thereof will be omitted.
- reference numeral 51 denotes a plurality of (for example, three) divided guide members as lubricating oil guide members, and each of the divided guide members 51 is replaced with the toroidal guide member 38 according to the first embodiment. It is used for the form.
- each of the divided guide members 51 is made of a lightweight and strong material such as a synthetic resin or an aluminum alloy, and the bottom plate portion 52, the cover plate portion 53, and the plurality of partition plates 54;
- the lubricating oil passage 55 is generally configured.
- a bottom plate 52 is attached to the carrier 19 of the planetary gear reduction mechanism 16.
- the bottom plate 52 has a screw insertion hole 52A at the center of a substantially rectangular flat plate.
- each division guide member 51 is screwed into the screw hole 19C provided on the support shaft 19B of the carrier 19 through the screw insertion hole 52A.
- Each support shaft 19B of the carrier 19 can be individually attached.
- Reference numeral 53 denotes a cover plate portion that covers the meshing portion between the sun gear 17 and each of the planetary gears 18, and the cover plate portion 53 is substantially convexly curved extending upward from the bottom plate portion 52 to the rotation shaft 10A of the electric motor 10.
- the inner surface is a concave curved surface 53A.
- the concave curved surface 53A receives the lubricating oil L scattered from the meshing portion between the first stage sun gear 17 and each of the planetary gears 18, and the lubricating oil L is centrifugally drawn along the concave curved surface 53A to the bottom plate portion 52. It is made to flow down to the upper surface of the above, and is led to the below-mentioned lubricating oil passage 55.
- each partition plate 54 denotes a pair of partition plates provided between the bottom plate portion 52 and the cover plate portion 53, and the respective partition plates 54 divide the space between the bottom plate portion 52 and the cover plate portion 53.
- the respective partition plates 54 form a pair by sandwiching the support shaft 19B of the carrier 19 from the radial direction. Therefore, each partition plate 54 prevents the lubricating oil L attached to the concave curved surface 53A of the cover plate portion 53 from flowing in the circumferential direction, and serves to guide the lubricating oil L to the lubricating oil passage 55 described later.
- a notch 54A is provided at the end edge of each partition plate 54 so as to be recessed from the tip end of the cover plate 53 toward the base end, and a tool such as a driver is provided inside the cover plate 53 through this notch 54A.
- the connecting screw 21 for attaching the bottom plate portion 52 of the divided guide member 51 to the support shaft 19B of the carrier 19 can be fastened by inserting.
- the lubricating oil passage 55 is a lubricating oil passage provided on the base end side of the cover plate portion 53 with respect to the screw insertion hole 52A in the bottom plate portion 52, and the lubricating oil passage 55 couples the bottom plate portion 52 of the divided guide member 51 It is configured to communicate with an oil hole 19D provided on the support shaft 19B in a state where it is mounted on the support shaft 19B of the carrier 19 using it. Therefore, after the lubricating oil L scattered or jetted from the meshing portion between the sun gear 17 and each planetary gear 18 flows down to the bottom plate 52 side along the inner side surface of the cover plate 53 and the side surface of the partition plate 54. The lubricating oil passage 55 is guided to the planetary gear bearing 20 through an oil hole 19D provided on the support shaft 19B of the carrier 19.
- the divided guide members 51 individually cover the meshing portions of the sun gear 17 and the planetary gears 18 respectively.
- each divided guide member 51 receives the lubricating oil L scattered or jetted from the respective meshing portions, and the received lubricating oil L is supported on the planetary gear bearing 20 which rotatably supports the respective planetary gears 18. It can lead. Therefore, also in the present embodiment, it is possible to obtain the same effect as that of the above-described first embodiment.
- any of the divided guide members may be used.
- 51 is damaged, only the damaged divided guide member 51 may be replaced, and the other divided guide members 51 can be used as they are.
- the split guide member 51 can be easily replaced, and the cost required for replacement can be reduced.
- the notch 54A is provided in the partition plate 54 of the split guide member 51, a tool for screwing the coupling screw 21 can be easily inserted into the split guide member 51, and this split guide member The workability when attaching and removing the 51 can be enhanced.
- the outer peripheral edge portion of the doughnut-shaped guide member 38 ' may be attached to the housing 12'.
- an annular step 12F is provided over the entire circumference on the inner peripheral surface on the upper end side of the housing 12 ', and a flange 43' extended radially outward is brought into contact with the step 12F.
- the donut shaped guide member 38 ' can be easily attached by screwing the coupling screw 21' inserted into the flange 43 'to the step 12F.
- the partition plate 41 is provided between the bottom plate portion 39 and the cover plate portion 40 constituting the doughnut-shaped guide member 38
- the present invention is not limited to this.
- the partition plate may be omitted.
- the doughnut-shaped guide member can be configured to be simple and lightweight, the doughnut-shaped guide member can be easily formed, and the manufacturing cost can be reduced.
- the divided guide member 51 in which one lubricating oil passage 55 is provided in the bottom plate portion 52 has been described as an example.
- the present invention is not limited to this.
- a total of two lubricating oil passages 55' are provided in the vicinity of one pair of partition plates 54. It is good also as composition.
- the lubricating oil L can be efficiently introduced to the planetary gear bearing. The same applies to the doughnut-shaped guide member 38 according to the first embodiment.
- one screw insertion hole 52A is provided in the bottom plate portion 52 constituting the split guide member 51, and the split guide member 51 is attached to the carrier 19 by one coupling screw 21.
- the present invention is not limited to this, and a plurality of screw insertion holes may be provided, and the division guide member may be attached to the carrier by a plurality of coupling screws.
- the support shaft 19B which supports the planetary gear 18 was integrally formed with the support plate 19A which comprises the carrier 19 was mentioned as the example, and was demonstrated.
- the present invention is not limited to this, and for example, a pin made of a separate member from the support plate constituting the carrier may be fixed to the support plate.
- planetary gear reduction mechanism 16 23, and 28 were provided in housing 12 as an example, and was explained.
- the present invention is not limited to this.
- a planetary gear reduction mechanism of one or two stages may be provided in the housing, or four or more planetary gear reduction mechanisms may be provided in the housing.
- the carrier rotation type planetary gear reduction mechanisms 16, 23, 28 are described as an example.
- the carrier fixed type planetary gear reduction mechanism may be used.
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
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- Structural Engineering (AREA)
- General Details Of Gearings (AREA)
- Retarders (AREA)
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Abstract
Description
2 上部旋回体
8 旋回装置
10 電動モータ(旋回モータ)
10A 回転軸
12,12′ ハウジング
12C 内歯
16,23,28 遊星歯車減速機構
17,24,29 太陽歯車
18,25,30 遊星歯車
19,26,31 キャリア
19B 支持軸
19D 油孔
20 遊星歯車用軸受
33 出力軸
36 ピニオン
37 旋回輪
37A 内輪
38,38′ ドーナツ状ガイド部材(潤滑油ガイド部材)
39,52 底板部
39A 軸挿通孔
40,53 覆板部
41,54 仕切板
42,55,55′ 潤滑油通路
43,43′ 鍔部
51,51′ 分割ガイド部材(潤滑油ガイド部材)
L 潤滑油
Claims (7)
- 上端側に旋回モータ(10)が設けられ下端側が上部旋回体(2)に取付けられる筒状のハウジング(12,12′)と、該ハウジング(12,12′)内に設けられ、前記旋回モータ(10)の回転を減速する遊星歯車減速機構(16,23,28)と、前記ハウジング(12,12′)内を上,下方向に延び、該遊星歯車減速機構(16,23,28)によって減速された回転を出力する出力軸(33)と、該出力軸(33)の下端側に設けられ、前記上部旋回体(2)と下部走行体(1)との間に設けた旋回輪(37)の内輪(37A)に噛合するピニオンとを備え、
前記遊星歯車減速機構(16)は、太陽歯車(17)と、該太陽歯車(17)と前記ハウジング(12,12′)の内側に設けられた内歯(12C)とに噛合し前記太陽歯車(17)の周囲を自転しつつ公転する複数の遊星歯車(18)と、該各遊星歯車(18)を支持するための複数の支持軸(19B)を有しこれら各支持軸(19B)に遊星歯車用軸受(20)を介して前記各遊星歯車(18)が回転可能に設けられたキャリア(19)とにより構成し、前記ハウジング内(12,12′)には前記遊星歯車減速機構(16)を潤滑する潤滑油(L)を保持してなる建設機械の旋回装置(8)において、
前記遊星歯車減速機構(16)の上側位置には、前記太陽歯車(17)と前記各遊星歯車(18)との噛合部を覆い、この噛合部から飛散する潤滑油(L)を受けて前記遊星歯車用軸受(20)に導く潤滑油ガイド部材(38,38′,51,51′)を設ける構成としたことを特徴とする建設機械の旋回装置。 - 前記潤滑油ガイド部材(38,38′)は、前記旋回モータ(10)の回転軸(10A)が挿通される軸挿通孔(39A)を有し前記太陽歯車(17)と前記各遊星歯車(18)との噛合部を全周に亘って覆うドーナツ状ガイド部材(38,38′)により構成してなる請求項1に記載の建設機械の旋回装置。
- 前記潤滑油ガイド部材(38,38′)の外周側には、前記ハウジング(12,12′)の内周面に向けて延びる鍔部(43,43′)を全周に亘って設ける構成としてなる請求項1に記載の建設機械の旋回装置。
- 前記潤滑油ガイド部材(51,51′)は、複数個に分割された分割ガイド部材(51,51′)により形成し、該各分割ガイド部材(51,51′)により前記太陽歯車(17)と前記各遊星歯車(18)との噛合部を個別に覆う構成としてなる請求項1に記載の建設機械の旋回装置。
- 前記潤滑油ガイド部材(38,38′,51,51′)は、前記キャリア(19)に取付けられる底板部(39,52)と、該底板部(39,52)から上方に立ち上がって前記旋回モータ(10)の回転軸(10A)へと延び前記太陽歯車(17)と前記遊星歯車(18)との噛合部を覆う覆板部(40,53)と、前記底板部(39,52)に設けられ前記覆板部(40,53)に沿って前記底板部(39,52)側へと流下した潤滑油(L)を前記遊星歯車用軸受(20)に導く潤滑油通路(42,55,55′)とにより構成してなる請求項1に記載の建設機械の旋回装置。
- 前記キャリア(19)の支持軸(19B)には潤滑油(L)を前記遊星歯車用軸受(20)に導く油孔(19D)を設け、前記潤滑油ガイド部材(38,38′,51,51′)の潤滑油通路(42,55,55′)は前記支持軸(19B)の油孔(19D)に対応する部位に設ける構成としてなる請求項5に記載の建設機械の旋回装置。
- 前記潤滑油ガイド部材(38,38′,51,51′)を構成する前記底板部(39,52)と前記覆板部(40,53)との間には、前記キャリア(19)の支持軸(19B)を径方向から挟んで対をなし前記底板部(39,52)と前記覆板部(40,53)との間の空間を仕切る複数の仕切板(41,54)を設け、前記潤滑油通路(42,55,55′)は前記各仕切板(41,54)の間に設ける構成としてなる請求項5に記載の建設機械の旋回装置。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP11780492.2A EP2570700B1 (en) | 2010-05-08 | 2011-04-22 | Swiveling device for construction machinery |
KR1020127023386A KR101751865B1 (ko) | 2010-05-08 | 2011-04-22 | 건설기계의 선회 장치 |
CN201180011784.2A CN102782370B (zh) | 2010-05-08 | 2011-04-22 | 工程机械的回转装置 |
US13/515,419 US8641569B2 (en) | 2010-05-08 | 2011-04-22 | Revolving apparatus for construction machine |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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JP2010107789A JP5496767B2 (ja) | 2010-05-08 | 2010-05-08 | 建設機械の旋回装置 |
JP2010-107789 | 2010-05-08 |
Publications (1)
Publication Number | Publication Date |
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WO2011142235A1 true WO2011142235A1 (ja) | 2011-11-17 |
Family
ID=44914291
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Application Number | Title | Priority Date | Filing Date |
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PCT/JP2011/059936 WO2011142235A1 (ja) | 2010-05-08 | 2011-04-22 | 建設機械の旋回装置 |
Country Status (6)
Country | Link |
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US (1) | US8641569B2 (ja) |
EP (1) | EP2570700B1 (ja) |
JP (1) | JP5496767B2 (ja) |
KR (1) | KR101751865B1 (ja) |
CN (1) | CN102782370B (ja) |
WO (1) | WO2011142235A1 (ja) |
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FR2987417A1 (fr) * | 2012-02-23 | 2013-08-30 | Snecma | Dispositif de recuperation de l'huile de lubrification d'un reducteur epicycloidal. |
EP2647880A1 (en) * | 2012-04-06 | 2013-10-09 | Hamilton Sundstrand Corporation | Lubrication management system for a rotating shaft assembly and method of forming |
US20140296015A1 (en) * | 2013-03-29 | 2014-10-02 | Sumitomo Heavy Industries, Ltd. | Shovel |
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US20140296015A1 (en) * | 2013-03-29 | 2014-10-02 | Sumitomo Heavy Industries, Ltd. | Shovel |
US9062743B2 (en) * | 2013-03-29 | 2015-06-23 | Sumitomo Heavy Industries, Ltd. | Shovel |
US20170022036A1 (en) * | 2013-07-31 | 2017-01-26 | Palfinger Ag | Crane |
US11352240B2 (en) * | 2013-07-31 | 2022-06-07 | Palfinger Ag | Crane |
CN104633069A (zh) * | 2013-11-08 | 2015-05-20 | 住友重机械工业株式会社 | 减速装置 |
CN110962505A (zh) * | 2018-09-30 | 2020-04-07 | 比亚迪股份有限公司 | 驱动桥和具有其的车辆 |
Also Published As
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CN102782370B (zh) | 2015-12-09 |
JP5496767B2 (ja) | 2014-05-21 |
CN102782370A (zh) | 2012-11-14 |
JP2011236950A (ja) | 2011-11-24 |
US20130045828A1 (en) | 2013-02-21 |
EP2570700B1 (en) | 2019-03-13 |
KR101751865B1 (ko) | 2017-06-28 |
KR20130084216A (ko) | 2013-07-24 |
EP2570700A4 (en) | 2018-04-25 |
EP2570700A1 (en) | 2013-03-20 |
US8641569B2 (en) | 2014-02-04 |
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