Classifications

• • 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
  • F16H57/0421—Guidance of lubricant on or within the casing, e.g. shields or baffles for collecting lubricant, tubes, pipes, grooves, channels or the like
  • F16H57/0426—Means for guiding lubricant into an axial channel of a shaft
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
  • B60B7/00—Wheel cover discs, rings, or the like, for ornamenting, protecting, venting, or obscuring, wholly or in part, the wheel body, rim, hub, or tyre sidewall, e.g. wheel cover discs, wheel cover discs with cooling fins
  • B60B7/06—Fastening arrangements therefor
  • B60B7/12—Fastening arrangements therefor comprising an annular spring or gripping element mounted on the cover
• • 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
  • F16H57/0421—Guidance of lubricant on or within the casing, e.g. shields or baffles for collecting lubricant, tubes, pipes, grooves, channels or the like
  • F16H57/0424—Lubricant guiding means in the wall of or integrated with the casing, e.g. grooves, channels, holes

Definitions

• the present invention relates to the lubrication of mechanical gearboxes with parallel shafts, and more specifically, to the lubrication of a stack of gears on a gearbox hollow shaft by a flow of oil circulating inside the gearbox. this one.
• It relates to a lubricating oil guiding device in a hollow shaft of the gearbox, comprising an oil recovery deflector at least partially capping the end of the shaft and its bearings, connected to a cannula introduced in the end of the hollow shaft.
• the distribution of the oil in a gearbox can be carried out using a chute for collecting and distributing the oil, in the upper position of the box. After recovery of the oil projections generated by the gearboxes of the box, the chute guides the oil, by gravity, to a deflector, located in the axis of the hollow shaft supporting the idle gears to lubricate.
• the oil can enter the shaft through a cannula penetrating the hollow shaft at one of its ends.
• the cannula is connected to a V-wall deflector. It collects the dripping oil along the walls of the deflector and introduces it into the hollow shaft.
• the collection of the oil for the hollow shaft carrying the gears to be lubricated can not be performed from the top, because of the difficulty of raising the oil in the box, and to recover it at the top of it.
• the present invention aims to facilitate the rise of the oil flow projected by the rotation of the shafts of the box, as well as its collection by a deflector towards a feeding cannula from the center of a hollow shaft.
• a lubricant raising zone by rotary drive and a V-shaped opening for the collection of the lubricant by scrapers and the orientation of the flow towards the cannula.
• the deflector also has a bearing venting zone, allowing the air contained in the shaft and behind the deflector to escape.
• FIG. 1 illustrates the flow of gravity oil guided by a chute and a baffle towards a hollow shaft of a gearbox
• FIG. 2 illustrates the lubrication of a hollow shaft by low feed
• FIG. 3 highlights the main functional areas of the proposed guiding device
• Figure 4 shows the proposed device
• Figure 5 shows the corresponding arrangements of the box housing.
• Figure 1 shows a cross section of the casing 1 of the gearbox 1, showing a chute 14 and a lubricating baffle 2 from the top of the box.
• the trough 14 is placed in the upper part of the box 1, above the hollow shaft to supply oil.
• the deflector 2 has a opening V, and opens into a cannula 3 concentric to the shaft.
• the arrow f indicates the path of the lubricant of the chute 14 towards the cannula 3.
• Figure 2 illustrates another type of gearbox, in which the oil projections in the upper part of the box are non-existent, so that the oil supply is only feasible from below the hollow shaft.
• the rotation of the shaft 4 creates a swirling blockage preventing the entry of the oil therein.
• the installation of a deflector is necessary to break the swirling effect created by the rotation of the shaft, and allow a supply by the center of the tree.
• the deflector is disposed opposite a throat 9 for supplying the oil to benefit from the kinetic energy of the flow. In order for the lubricant to reach a sufficient quantity in the cannula, its arrangement and orientation must therefore be carefully selected.
• the lubricating oil guiding device in a gearbox hollow shaft of the invention which is the subject of FIG. 4, comprises a baffle 2 for oil recovery, at least partially covering the end of the gearbox. the shaft and its bearings. It is connected to an introduction cannula 3 engaged in the end of the hollow shaft.
• this new deflector has several functional zones:
• zone b cut to recover the lubricant from the bottom of the gearbox, - a zone c, lubricant rise by rotary drive,
• a V-shaped opening for the collection of the lubricant by scrapers, and the orientation of the flow towards the cannula.
• the first functional zone does not participate directly in supplying the shaft with lubricant: it is sealed to optimize the filling volume of the bearing 10.
• zone c the lubricant is rotated upwards by the rotating parts.
• the crankcase bearing also has special features:
• the obturation zone has the function of optimizing the volume of fuel entering the bearing of the hollow shaft. It is materialized by a circular inlet flange 6 of the deflector 2.
• the arrangements of the can housing la and deflector 3 visible in Figures 4 and 5, are provided to introduce the oil inside a hollow shaft (not shown) rotating in the clockwise direction.
• a lubricant supply duct 9 in the zone a is visible in Figure 5. It is made in the mass of the casing la.
• the deflector 2 has a positioning wall 4 vis-à-vis the bearing 9, in which is cut an opening 4a corresponding to the oil recovery zone b. It faces the groove 9.
• the lubricant is introduced through the opening 4a of the positioning wall 4.
• a pocket limiting the volume of lubricant in the baffle is created, thanks to the partial closure of the volume by an inlet flange 6, whose wall is close to the rotating parts with the shaft.
• the opening 4a and the inlet rim 6 allow efficient filling of the functional recovery zone b.
• the rise of the lubricant (zone c) is facilitated by the smooth wall 2a of the deflector 3, which can be adjusted to the proximity of the rotating parts vis-à-vis to optimize the flow to the V formed by the sidewalls 7 , 8 of the wall 2a.
• the collection of lubricant in the cannula takes place in zone d.
• Lubricant rotated back up. It is projected onto scrapers 8a, 8b of the baffle (see FIG. 4) and the bottom 10a of the bearing 10 (see FIG. 5) partially exposed by the V-shaped opening of the deflector.
• the lubricant stopped by the scrapers 8a and 8b flows along the sidewalls 7, 8 and on the bottom of the bearing 10a. It is recovered by the cannula 3.
• the scrapers 8a, 8b of the deflector 2 are arranged on at least one sidewall 8 of its opening d. They can extend over the entire height of the sidewall 8, insofar as the parts facing each other allow it.
• the sidewall 8 opposite to the direction of rotation of the shaft makes it possible to recover the flow of oil returned by the scraper 3d, thanks to the projection force of the lubricant.
• the deflector 2 has an area of the air vent bearing e, which allows the escape of the air contained in the shaft and behind the deflector.
• the bearing 10 has a groove 13 to allow the vertical escape of the air present in the zone.
• the V of the deflector is open in front of the groove 12, to facilitate degassing.
• an indexing of the deflector is necessary to correctly orient the V (flanks 7, 8 of the deflector), and to ensure that the recovery zone b of the lubricant is in front of the oil inlet groove 7 of the crankcase mechanisms, the box.
• the indexing of the recovery zone b is carried out in the zone f, by a notch 11 in the bottom of the bearing 10a, and by an indexing stud 12 on the deflector 2.
• the pin 12 is carried for example by the wall 4a positioning of the deflector on the bearing 10.
• the proposed oil guiding device can be manufactured by various methods, including plastic injection, 3D plastic wire printing, stamped sheet metal and welded assembly, etc. It has only one direction fitting determining the orientation of the deflector in the bearing.

Landscapes

• Engineering & Computer Science (AREA)
• General Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• General Details Of Gearings (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=57963357

Family Applications (1)

Country Status (5)

Families Citing this family (5)

Family Cites Families (8)

• 2016
  • 2016-12-02 FR FR1661833A patent/FR3059753B1/fr not_active Expired - Fee Related
• 2017
  • 2017-10-12 EP EP17797388.0A patent/EP3548775A1/de not_active Withdrawn
  • 2017-10-12 CN CN201780078392.5A patent/CN110088508A/zh active Pending
  • 2017-10-12 WO PCT/FR2017/052809 patent/WO2018100259A1/fr unknown
  • 2017-10-12 RU RU2019119861A patent/RU2726213C1/ru active

Also Published As

Similar Documents

Legal Events