CN104930170B - The lubrication of power-train component - Google Patents

Abstract

The invention discloses a kind of for lubricating the lubricating utensil of one or more components.The equipment may include a shell, and the shell has the housing cavity comprising lubricating fluid；Liquid collecting structure can be positioned on the inside of shell, and the liquid collecting structure has lip-like edge and liquid reservoir, and the lip-like edge at least partly extends into housing cavity in the lubricating fluid storage tank ullage of housing cavity.First lubrication channel can extend into shell from the liquid collecting structure.The lip-like edge and liquid reservoir of the liquid collecting structure can collect the lubricating fluid for splashing lubricating fluid storage tank ullage.Lubricating fluid can be directed to one or more of components from liquid collecting structure by the first lubrication channel.

Description

The lubrication of power-train component

Cross reference related application

This application claims the priority for the U.S. Provisional Application 61/968,095 that on March 20th, 2014 submits.

Technical field

This disclosure relates to the profits of the moving component of the axis installing type rotary part in the powertrain including vehicle It is sliding.

Background technique

In various environment and applications, can usefully lubricating power transmission parts, to reduce the damage to these components It is bad, protect them against excessive wear etc..In various constructions, it can come via the storage tank of lubricating fluid (for example, lubricating oil) Lubrication is executed, a part of various moving components extends in the storage tank.For example, with various in actuating unit Component rotation, these components can be by lubricating oil storage tank (for example, the storage tanks formed by the shell of these components) for direct Lubrication.

According to include fluid container (for example, with inside tank transmission device shell) construction and it is other because The liquid level of element, the lubricating fluid in lubricating oil storage tank can be changed into from insignificant fluid level more than various rotary parts The liquid level of the middle line of (for example, power transmission shaft and associated component in gear mechanism housing).Further, storage tank liquid level can In various static oil levels (including the static liquid level being in when the various vehicle inclination angles relative to normal) and dynamic oil level Change between (that is, in storage tank liquid level in the operating process of actuating unit or other components).

Accordingly, it is possible to various problems relevant to certain modes of lubricating transmission parts occur.For example, actuating unit Excessively high static state (or other) oil level may bring parasitic loss (for example, logical in associated power transmission in shell Cross the biggish windage loss for rotating through the component of oil).In addition, the unexpected change of the liquid level of storage tank or inevitably variation It may cause insufficient lubrication to various parts.

Summary of the invention

Disclosed lubricating system be used for lubricate for example including around vehicle differential gearing axis install and with the differential The various mechanisms for the parking brake that transmission shaft rotates together.

According to an aspect of the present invention, lubricating utensil includes the shell with the housing cavity comprising lubricating fluid.Lubrication Equipment includes liquid collecting structure and extends into the first lubrication channel in shell from the liquid collecting structure.Liquid collecting structure includes lip-like edge And liquid reservoir, the lip-like edge at least partly extend into housing cavity in the lubricating fluid storage tank ullage of housing cavity In.Lubricating fluid is directed to one or more components from liquid collecting structure by the first lubrication channel.

It may include one or more following characteristics in disclosed lubricating system.For example, the second lubrication channel can incite somebody to action Air is discharged from one or more of components and lubricating fluid is discharged from one or more of components.In the component One component may include the first bearing for supporting rotatable shaft.Lubricating utensil can also include at least partly comprising second The component chamber of part.First bearing can be positioned at the first side of component chamber.Lubricating utensil may include first annular gap, and first Annular gap provides first annular flow path between component chamber and first bearing.Lubricating fluid can flow through in component chamber and First annular flow path between first bearing is to lubricate second component.Second component can be at least partly around rotatable Axis, and may include the parking brake for being installed to rotatable shaft.The piston of parking brake in the first configuration can be with Obstruction enters the oil lubrication path in component chamber from housing cavity.

Lubricating utensil may include the second bearing of the second side for supporting rotatable shaft and being located at component chamber.Lubricating utensil It can also include the second annular gap, the second annular gap provides the second annularly flow road between component chamber and second bearing Diameter.Lubricating fluid can flow through the second annular flow path between component chamber and bearing to lubricate second component.

Lubricating utensil may include one or more slits in the inner wall of component chamber, and with it is one or more of narrow The groove of fluid communication, and one or more discharge-channels with the ditch fluid communication.One or more of slits, Groove and one or more of discharge-channels at least partly can provide flowing between component chamber and housing cavity together Path.

According to another aspect of the present invention, lubricating utensil includes lubricating fluid pump and has at least partly comprising first The shell of the component chamber of part.First bearing supports rotatable shaft and is located at the first side of component chamber.First lubrication channel via Lubricating fluid is directed to component chamber from lubricating fluid pump by first bearing.First annular gap is between component chamber and first bearing First annular flow path is provided, and lubricating fluid flows through the first annular flow path between component chamber and first bearing To lubricate the first component.

It may include one or more following characteristics in disclosed lubricating utensil.For example, the second lubrication channel can incite somebody to action Air is discharged from one or more of components and lubricating fluid is discharged from one or more of components.The first component can be with At least partly around rotatable shaft, and the parking brake including being installed to rotatable shaft.The piston of parking brake exists It can block in the first configuration and enter the oil lubrication path in component chamber from housing cavity.

Lubricating utensil may include the second bearing of the second side for supporting rotatable shaft and being located at component chamber.Lubricating utensil It can also include the second annular gap, the second annular gap provides the second annularly flow road between component chamber and second bearing Diameter.Lubricating fluid can flow through the second annular flow path between component chamber and second bearing to lubricate the first component.

Lubricating utensil may include one or more slits in the inner wall of component chamber, and with it is one or more of narrow The groove of fluid communication, and one or more discharge-channels with the ditch fluid communication.One or more of slits, Groove and one or more of discharge-channels can at least partly provide the flow path for leaving component chamber together.

The details of one or more implementations is illustrated in the accompanying drawings and the description below.According to specification, attached drawing and power Benefit requires, and other feature and advantage will be apparent.

Detailed description of the invention

Fig. 1 is the side view that the example vehicle of lubricating utensil can be executed about it；

Fig. 2 is the perspective view that the differential mechanism of the vehicle of lubricating utensil can be executed about it of Fig. 1；

Fig. 3 is the perspective view of the internal part of the differential mechanism of the Fig. 2 intercepted along the plane 3 of Fig. 2, including lubricating utensil Component；

Fig. 4 is the enlarged view of a part of Fig. 3；

Fig. 5 is the enlarged view of a part of Fig. 3；

Fig. 6 includes the front perspective view and back perspective view of the front cover of the differential mechanism of Fig. 2, the component including lubricating utensil；

Fig. 7 is the front view of the lid of the differential mechanism of Fig. 2, the component including lubricating utensil；And

Fig. 8-10 is the sectional perspective view for showing the various internal parts of lid of Fig. 7.

Like reference numerals in each attached drawing indicate similar element.

Specific embodiment

It is described below disclosed, one or more such as the lubricating utensil shown in the accompanying drawings described in above briefly A exemplary embodiment.Those skilled in the art is expected the various modifications carried out for exemplary embodiment.

Will become evident that according to discussion herein, it can be advantageous in various environment and with various machines Device is used together disclosed lubricating utensil.For example, can be about a variety of components including various moving components in various operations The lubricating utensil is utilized in vehicle.It in certain embodiments, also as described below, can be about the rotary part benefit around rotary shaft With the lubricating utensil.

Rotary part (and other moving components) may splash lubrication when passing through lubricating fluid storage tank in all directions Fluid (for example, oil), may be taken fluid outside storage tank to by surface force, and may be in other ways by fluid distrbution in volume Determine storage tank liquid level or more.In certain embodiments, disclosed equipment can collect a part of be distributed lubricating fluid oil To carry out advantageous use.For example, in certain embodiments, the liquid collecting structure of such as lip-like edge formula liquid reservoir etc can be formed On the inner surface of gear mechanism housing (for example, differential casing), and it can advantageously collect the oil that a part is splash.

Various other benefits also will be evident, the discharge of management and closed air including oil circuit line options.Example Such as, the oil from (for example, as described above) liquid collecting structure or another source, which can be conducted through lubrication channel and reach, is located at phase Close shell in or neighbouring various parts.Further, lubrication channel can permit fluid in the various parts and each area Flowed between domain, consequently facilitating the discharge of oil, the discharge of gas (for example, for preventing air by capturing to the damming of oil) and Other advantageous effects.

In certain embodiments, it is related can be directed to support by lubrication channel for (for example, from liquid collecting structure) fluid The bearing of the axis of connection.For example, it is poor that lubrication channel can send support from liquid collecting structure for oil in the case of differential (or shell) Outer " tail portion " bearing of fast transmission shaft and a bearing or two bearings in interior " head " bearing.Lubrication including circular passage Channel can additionally or alternatively send oil to from bearing its including the component that is mounted on transmission shaft between bearing Its rotary part.Further, lubrication channel can be from each region of system (for example, attached in bearing or other rotary parts Closely) otherwise discharge oil or discharge may be trapped in equipment the air of (and to prevent lubrication appropriate).

Referring now to fig. 1, the vehicle 10 (for example, working truck) of diagram may include power source 12 (for example, internal combustion engine) With transmission device 14 (for example, a series of mechanical organs or other actuated elements).Although vehicle 10 is illustrated as drawing in Fig. 1 Machine, it will be understood that, can about include forestry vehicle (for example, skidder or tree-dozer-skidder), Construction traffic (for example, Loading machine or backacter) etc. various type of vehicle execute disclosed equipment.It will also be understood that in certain embodiments, Can in off-board platform using disclosed lubricating utensil come lubricating movement part.Further, although it is described herein Certain examples can be related to for include axis installing type parking brake component relevant to differential mechanism lubrication, but will Understand, these exemplary basic principles can advantageously expand in various lubricant environments.

Referring now also to Fig. 2 and 3, transmission device 14 may include differential mechanism 16, and differential mechanism 16 may include differential carrier Body 18.In certain embodiments, shell 18 can be the component of housing body and cover.For example, before shell 18 may include Lid 20, front cover 20 can fix the main body 18a that (or being otherwise attached to) arrives shell 18 with bolt.Similarly, shell 18 can To include top cover 22, top cover 22 can fix (or being otherwise attached to) to front cover 20 with bolt.It will be understood that these (and it is each It is kind other) housing parts can be formed or coupled to shell 18 in various ways, and in certain embodiments, integrated portion Part can be used to replace two or more components.

In certain embodiments, shell 18 can be configured in housing cavity (for example, in main differential mechanism chamber 16a Main storage tank 24) in include lubricating fluid.Ring gear (or other components) (not shown) can be for example rotatably mounted It can therefore rotate in shell 18 and around rotation center 26.In some configurations, ring gear (or other components) It can extend at least partially into main storage tank 24.Therefore, as ring gear rotates, ring gear may autonomous storage in the future The lubricating fluid (for example, oil) of slot 24 is splash at each other positions in main chamber 16a.

Differential gearing axis (" DDS ") 28 can extend into differential casing 18.For example, DDS 28 can pass through front cover 20 and top cover 22 and extending into become owner of in differential mechanism chamber 16a.In certain embodiments, DDS 28 may include pinion gear 30, Pinion gear 30 can be engaged with the ring gear (not shown) of differential mechanism 16.Therefore, DDS 28 can ultromotivity in future source (example Such as, power source 12) driving force provided via the ring gear (not shown) rotated around rotation center 26 it is associated to two Half wheel shaft (not shown).In certain embodiments, DDS 28 can be by such as tail bearing 32 and head bearings 34 etc Various bearing supports.

Referring now also to Fig. 4, the enlarged view of differential mechanism 16 is presented, including putting for DDS 28, front cover 20 and top cover 22 Big view.In certain embodiments, one or two of front cover 20 and top cover 22 can limit component chamber 36, which is to be used for Chamber including various parts (for example, various rotary parts) and various shape can be configured to.It can be with various known Mode manufactures component chamber 36 (as described herein various other components).For example, in certain embodiments, component chamber 36 can To be manufactured to include one or more holes into top cover 22 or front cover 20.

As shown in figure 4, component chamber 36 may include the component that will be lubricated, such as parking brake 38.Parking brake 38 It may include such as piston 40, plate 42 and hub 44, a part of plate 42 is installed to hub 44 and a part of plate 42 is installed to top Lid 22 (or being installed to another component fixed relative to the rotation of DDS 28).Hub 44 again can be (for example, be connected by spline Part) it is installed to DDS 28.In this way, it will be appreciated that a frictional force can produce by the pressure that piston 40 is applied to plate 42, the frictional force It prevents DDS 28 from rotating, while being correspondingly generated heat.In certain embodiments, biasing member (for example, spring 46) can be by It is arranged to for bias force being applied on piston 40.As shown in figure 4, for example, the default conditions of parking brake 38 can be engagement State (that is, the state for preventing DDS 28 from rotating by frictional force between plate 42).Therefore, spring 46 can be by the braking of default Power is applied on piston 40 (in Fig. 4, being normally applied to left side), which can be by hydraulic (or other) actuator (not shown) resistance is with release board 42 and DDS 28 is allowed to rotate.

According to for being thermally generated of occurring of quick rotary part and common abrasion, it will be understood that it can be beneficial that Parking brake 38 (and its various parts) are lubricated in the operating process of parking brake 38 or DDS 28.Therefore, in certain realities It applies in example, can use various lubrication channels to transport lubricating fluid (e.g., including the lubricating fluid in main storage tank 24) To parking brake 38.In certain embodiments, lubrication channel can be configured for for lubricating fluid being directly shipped to Parking brake 38.In certain embodiments, described in further detail below, lubrication channel can be configured for via with difference Lubricating fluid is transported to parking brake 38 by the relevant various other components of fast device 16.For example, lubrication channel can be constructed At for lubricating fluid to be transported to bearing 32 or 34, then it is transported on parking brake 38.In this regard, it will be appreciated that axis Relevant flow channel can be limited in expected lubricating utensil by holding 32 and 34 each surface itself.For example, being arranged in axis The oil for the side held can pass through various spaces to flow to the other side of bearing between various parts of bearings.

As also described above, the fluid level lubricated in storage tank (for example, main storage tank 24) can be according to various vehicles, operation shape State, transmission designs etc. change.About differential mechanism 16, the example of specified oil level can be represented as lower fluid level L1, central fluid liquid level L2 and higher fluid level L3.It will be understood that the height of these liquid levels can be influenced to differential mechanism 16 The degree of lubrication of various parts, while having an effect on the windage loss amount for being passed through oil by moving component and being applied.In these fluid liquid At each liquid level in face, component (for example, differential mechanism ring gear), which passes through main storage tank 24, may cause oil upward fortune in large quantities (that is, by splashing, spraying, transporting) is sent to enter in the whole region of main chamber 16a.

It therefore, can be usefully in order to promote to lubricate various parts (for example, bearing 32 and 34 and parking brake 38) It is configured to capture or collect structure of/injection/oil transported to be re-assigned at position appropriate splash.For example, Liquid collecting structure 48 or similar component can be set.For example, liquid collecting structure 48 can be formed on the inside of front cover 20 and can To extend at least partially into main chamber 16a.In certain embodiments, liquid collecting structure 48 may include extending outwardly away from main storage tank 24 lip-like edge 50, the lip-like edge 50 can form liquid reservoir 52, and oil can be collected into wherein by liquid reservoir 52.In certain implementations In example, top lip-like edge 50 is extended to above the specific oil level of main chamber 16a.As described above, ring gear is in differential mechanism Rotation in 16 can the oil of autonomous storage tank 24 in the future splash and be carried into main chamber 16a upwards.Therefore, some oil It can be collected in liquid reservoir 52.

Referring now also to Fig. 5, enlarged view presents parking brake 38, component chamber 36, bearing 32 and 34,20 and of front cover Certain interfaces between top cover 22.The hub 44 of parking brake 38 can be connected to DDS 28 via spline connector 54, borrow Friction between this plate 42 can be used for being slowed or shut off the rotation of parking brake 38 and DDS 28.In certain embodiments, To promote lubricating oil to flow into component chamber 36, various flow channels can be provided.For example, annular gap is (for example, top cover 22 and hub Annular gap 56 between 44) flow path can be provided between tail bearing 32 and component chamber 36.Similarly, annular gap (for example, annular gap 58 between front cover 20 and DDS 28) can provide flowing road between head bearings 34 and component chamber 36 Diameter.In certain embodiments, the height in these gaps 56,58 therefore can be for (for example, such as by filling main storage tank 24 or liquid collecting What the oil of structure 48 provided) specific oil pressure potential difference adjusts the oil mass that can be flowed into from bearing 32,34 in component chamber 36.

In certain embodiments, opening 60 can lead to main chamber 16a from head bearings 34.In this way, for example, head bearings 34 Can (for example, by splash or by flood opening 60 a part oil level) the autonomous storage tank 24 of origin oil lubrication.Class As, according to the oil level in main chamber 16a, oil can be vented back to main chamber 16a (or vice versa from head bearings 34 by opening 60 ).However, other constructions can also be possible, including being flowed by extending from the one or more of liquid collecting structure 48 Channel lubricates head bearings 34.

Referring now also to Fig. 6, the front view and rearview of front cover 20 are presented.Depending on various factors, liquid collecting structure 48 can To be configured for extending across the multiple portions of the inner surface of front cover 20.For example, as shown in fig. 6, liquid collecting structure 48 can be with Extend across the entire part (or another interior zone of differential casing 18) for being exposed to main chamber 16a of front cover 20.In this way, example Such as, largely splash/transport oil can by liquid collecting structure 48 collect or capture.

In some configurations, each fluid flowing passage can be from main chamber 16a (or another region including lubricating fluid) Extend to each moving component.For example, channel 62 can extend through front cover 20 from main chamber 16a.The quantity in channel 62, construction with And function can change.For example, certain channels 62 can mainly be provided for from main chamber 16a (or other regions) to each fortune The oil lubrication path of dynamic component (for example, bearing 32), other channels 62 can mainly be provided for collecting or capturing The leakage path of air, and other channels 62 can mainly provide lubricating fluid tapping equipment.It is to be appreciated, however, that each The other constructions of kind can be possible.For example, as shown in fig. 6, six channel 62a-f are provided, wherein three channel 62a-c In the upper area of front cover 20, three channel 62d-f are in the lower area of front cover 20.As shown, even if working as liquid reservoir 52 when being completely filled (that is, oil is filled into oil level L4), and oily channel 62b can be located at the office provided by liquid collecting structure 48 Above portion's oil level (that is, liquid level L4).Thus, for example, otherwise channel 62b, which can usefully be used as, may be collected or capture The tap of air in lubricating utensil.On the contrary, for example, because channel 62a and 62c are located at the lower section oil level L4, thus these Channel can be usefully used for oil being directed to various moving components from liquid collecting structure 48.

Channel 62d-f can be also used for various purposes.In certain embodiments, which can depend, at least partially, on Specified oil level in main storage tank 24.For example, channel 62e enters front cover if the oil in main storage tank 24 is near liquid level L1 Entrance in 20 can be submerged in the oil, this can cause it is some oil due to channel 62e entrance top oil pressure potential difference and It is flowed into the 62e of channel from main storage tank 24.Therefore, in certain embodiments, entering the oil stream in the 62e of channel from main chamber 16a can be with It is used to lubricate various parts.Further, in the case where oil level is at liquid level L1, oil not necessarily flows into from main storage tank 24 logical In road 62f and 62d.Therefore, in certain embodiments, oil can be used for from the flowing that channel 62f and 62d enter in main chamber 16a Various parts are discharged in oil.It will be understood that however, various other constructions can be it is possible, and in lubricating utensil give The effect of flow channel 62 can change with the liquid level of the oil in main storage tank 24.For example, if oil rises in main chamber 16a Liquid level L2, then this can promote oil to flow into each channel 62d-f from main chamber 16a.

Referring now also to Fig. 7-10, the various views of top cover 22 are presented.About Fig. 7 it will be understood that, the channel 62 being instructed to A part of can be included in top cover 22.Therefore, in Fig. 7 for the instruction of various fluid channels 62 can be considered as The instruction of the position of fluid channel 62 in top cover 22, be shown the front surface by closed roof 22 in Fig. 7 by The practical schematic diagram of the fluid channel 62 of obstruction.

Enter in top cover 22 it can be seen that channel 62a-c may extend through front cover 20 and extend downwardly into bearing 32. Similarly, channel 62e may extend through front cover 20, into top cover 22 and extending up to bearing 32.In this way, for example, In the case where storage tank oil level is at liquid level L1, oil can be transported to tail bearing 32 from liquid collecting structure 48 by channel 62a and 62c (indicating its position 32a in figs. 8-10), and air can be returned to main chamber 16a from the discharge of tail bearing 32 by channel 62b Top in.Meanwhile channel 62e can be provided for lubricating fluid from tail bearing 32 back to main chamber 16a and main storage tank 24 Emission path.Further, in certain embodiments, channel 62d and 62f may extend through front cover 20 and top cover 22, provide from Fluid flow path of the main chamber 16a to component chamber 36.In this way, for example, channel 62d and 62f may include by oil discharge come Usefully promote the lubrication of parking brake 38.

Therefore, for the representative configuration of Fig. 4-10, the case where oil level is at the exemplary liquid level L1 in main chamber 16a Under, oil can be splashed out outside main storage tank 24 by ring gear (or other components) and be collected or captured by liquid collecting structure 48. Channel 62a and 62c can be flowed through after spontaneously from liquid collecting structure 48 and reaches tail bearing 32 (and neighbouring space).It can be with after spontaneously Across tail bearing 32, passes through annular gap 56 and enter in component chamber 36.Further, the air from component chamber 36 can To be discharged by channel 62b back to main chamber 16a.Oil can lubricate each portion of parking brake 38 and tail bearing 32 Part, and may then pass through channel 62e and (from component chamber 36) channel 62d and 62f (from tail bearing 32) It is discharged back to main storage tank 24a.

Similarly, oil can flow through the annular gap 58 between head bearings 34 and component chamber 36.In some embodiments In, it passes through opening 60 for example, oil can splash (or in other ways) from main chamber 16a and reaches head bearings 34.It can be with after spontaneously Bearing 34 is flowed through, annular gap 58 is passed through and is entered in component chamber 36.(it will be understood that can also be can for opposite flow path Can, wherein oil stream is from the discharge of component chamber 36, across annular gap 58 and be then out opening 60, into main chamber 16a.)

According to the oil level (or other factors) in for example main storage tank 24a, lubricating fluid (for example, oil) can occur or catch The various other streams of the gas obtained.For example, if the oil in main chamber 16a rises to liquid level L2, oil can flow through channel 62d and 62f and enter in component chamber 36, thus provides the lubrication for parking brake 38.(in this case, institute also as above It states, channel 62b can provide the useful leakage path of air, and otherwise the air may be trapped in component chamber 36.) phase Instead, if the oil in main chamber 16 is less high (for example, being located at liquid level L1), channel 62d and 62f can be provided for oil from portion Part chamber 36 arrives the emission path of main chamber 16a.In this way, for example, may be implemented oil stream cross the appropriate circulation of component chamber 36 can be with.

In certain embodiments, channel 62 can substantially radially extend in top cover 22.Thus, for example, channel 62b and 62e can provide lubrication and row for component after the substantially axial flow path from main chamber 16a or liquid collecting structure 48 The roughly vertical flow path put.In contrast, channel 62a, 62c, 62d and 62f can be provided in vertical direction with angle Flow path, and directly from main chamber 16a or the substantially axial flow path of liquid collecting structure 48.

Others construction is also possible to possible.For example, flow path can be configured to (for example, via from liquid collecting knot Structure 48 leads to tail bearing 32 or leads to the generally ramped flow channel of main chamber 16a from tail bearing 32) deviate main shaft to side To.Similarly, flow path can be configured to deviate the angle of variation with vertical direction.Although for example, one of channel 62a Point be illustrated as being oriented from vertical direction and deviate about 45 degree, but other sizings can be it is possible (as with it is various its Its channel 62).

In certain embodiments, oil can enter in component chamber 36 in various ways.For example, referring back to Fig. 4 and 6, when When the engagement of piston 40 (that is, being moved to left side) of parking brake 38, this can permit oil and flows into component chamber across individual channel In 36.For example, opening 64 can be arranged between the liquid reservoir 52 of liquid collecting structure 48 and component chamber 36.When parking brake 38 When not engaging, the piston 40 of parking brake 38 can block opening 64 (entirely or in part), thus (at least partly) It prevents from oil stream from crossing opening 64 to enter in component chamber 36.Therefore, when parking brake 38 does not engage, each channel 62 (and ring Shape gap 56 and 58) oil can be made to mainly flow into and flow out component chamber, make gas mainly discharge etc. from component chamber 36.However, When (that is, when the lubrication and especially high cooling requirement for parking brake 38) engagement of parking brake 38, piston 40 is remote The movement for leaving mouth 64 can promote component chamber 36 to be full of the oil from liquid collecting structure 48 and can permit gas and pass through opening 64 are leaked to main chamber 16a.This can provide the lubrication and cooling of enhancing when parking brake 38 engages for parking brake 38.

As also described above, living when parking brake 38 engages and the piston 40 of parking brake 38 obstruction opening 64 Plug 40 not necessarily may fully block opening 64.Therefore, even if parking brake 38 engages and piston 40 blocks out Mouth 64, oil still can flow through opening 64 from the liquid reservoir 52 of liquid collecting structure 48.Fluid then can be with for example, flow to annular sky Between 66, to provide additional useful lubrication and lubricating fluid discharge.

In certain embodiments, the replacement other than liquid collecting structure 48 or as liquid collecting structure 48, it is pre- by present disclosure The lubricating utensil of phase can be configured for operating in combination with lubricating pump (for example, pump 72 in Fig. 4).For example, certain In embodiment, oil can be pumped into each flow channel 62 by lubricating pump, to lubricate bearing 32,34 or parking brake 38.Thus, for example, certain flow channels 62 extend to pump intake (not shown) or in other ways include pump intake (not Show), for receiving lubricating fluid from the pump.Correspondingly, in certain embodiments, certain flow channels 62 are (for example, flowing Channel 62d-f) it can be configured for that be expelled back into can be away from the pump liquid reservoir (not shown) that main storage tank 24 is remotely located by oil.

Similarly, it will be clear that some embodiments of disclosed equipment can be configured to use according to discussion in text In a part (or various other individual components or the component for changing ground combination) for only lubricating above-mentioned component.For example, channel 62 can be configured for only lubricating a bearing in bearing 32 and 34 or only lubricate parking brake 38, or only lubricate this The various combinations of a little components and other components.

In some embodiments it is possible to include other feature.For example, various slits (for example, axial slots 68) can wrap It includes in the inner wall of component chamber 36 (or another chamber, such as the chamber around head bearings 34).For example, the slit 68 can assist in portion Suitably distribution is oily in part chamber 36 and oil is suitably transported between component chamber 36 and main chamber 16a.For example, slit 68 can mention For use by the flow path of the various parts of parking brake 38 with promote oil around component chamber 36 and by component chamber 36 more Readily movement.Further, in certain embodiments, slit 68 can be in fluid communication with each flow channel 62 to promote oil Transport between component chamber 36 and the other positions of differential mechanism 16.For example, groove (for example, ring-shaped groove 70) can interconnect respectively It a slit 68 and may be also connected to each flow channel (for example, discharge-channel 62d and 62f), in 36 He of component chamber Oil is transported between main storage tank 24.

It will be understood that various embodiments may include additional (or interchangeable) feature of the above and flow channel. Similarly, various embodiments can not include above-mentioned certain features or flow channel.For example, some embodiments can not include Ring-shaped groove 70 (as described above) may include slit 68 of different configuration etc..

Term used herein is not intended to be limited to the present invention only for describing specific embodiment.Such as this paper institute With singular " a ", " an " and " the " are also aimed to including plural form, unless context otherwise explicitly indicates that. Will be further understood that, when in this specification in use, term " including " and/or " including " indicate there are defined feature, integer, Step, operations, elements, and/or components, but do not preclude the presence or addition of one or more of the other feature, integer, step, behaviour Work, component, assembly unit and/or its group.

Description of the invention has been used for descriptive and illustrative purpose, it is not intended to the exhaustive present invention in the form of disclosed Or the limitation present invention.In the case where not departing from the scope of the present invention and spirit, permitted for a person skilled in the art More modifications and variation will be apparent.The embodiment explicitly referred to herein is selected and is described most preferably to explain The practical application of the principle of the present invention and they, and others skilled in the art can be made to understand the present invention and recognized Many alternatives, modification and the variation of example (multiple examples) about description.Therefore, in addition to reality that those are expressly recited Example and implementation are applied, various embodiments and implementation are in the range of following claims.

Claims (14)

1. a kind of for lubricating the lubricating utensil of one or more components, the lubricating utensil includes:

Shell, the shell have the housing cavity at lubricating fluid storage tank liquid level comprising lubricating fluid；

Liquid collecting structure, the liquid collecting structure have lip-like edge and liquid reservoir, and the lip-like edge extends outwardly away from the housing cavity Part comprising lubricating fluid, the lip-like edge extend to top edge, and the top edge is at least partly in housing cavity The lubricating fluid storage tank ullage be located in housing cavity, the liquid reservoir is located at the upper edge of the lip-like edge The lower section of edge；With

First lubrication channel, first lubrication channel extend into shell from the liquid collecting structure；

Wherein, the lip-like edge and liquid reservoir of the liquid collecting structure collect the lubrication flow for splashing lubricating fluid storage tank ullage Body；And

Wherein, lubricating fluid is directed to first in one or more of components by first lubrication channel from liquid collecting structure Component.

2. lubricating utensil according to claim 1, wherein the second lubrication channel for executing air from one or Multiple components discharge and lubricating fluid one of be discharged or more from one or more of components operates.

3. lubricating utensil according to claim 1, wherein the first component includes the first bearing for supporting rotatable shaft.

4. lubricating utensil according to claim 3, further comprises:

Component chamber, the component chamber at least partly include the second component in one or more of components, wherein described One bearing is located in the first side of component chamber；With

First annular gap, the first annular gap provide first annular flow path between first bearing and component chamber；

Wherein, lubricating fluid flows through the first annular flow path between first bearing and component chamber to lubricate second component.

5. lubricating utensil according to claim 4, wherein the second component is at least partly around the rotatable shaft.

6. lubricating utensil according to claim 5, wherein the second component includes being installed to stopping for the rotatable shaft Vehicle brake.

7. lubricating utensil according to claim 6, wherein the piston of the parking brake blocks in the first configuration From housing cavity to the oil lubrication path in component chamber.

8. lubricating utensil according to claim 4, further comprises:

The second bearing of the rotatable shaft is supported, the second bearing is located in second side of component chamber；With

Second annular gap, second annular gap provide the second annular flow path between second bearing and component chamber；

Wherein, lubricating fluid flows through the second annular flow path between second bearing and component chamber to lubricate second component.

9. a kind of for lubricating the lubricating utensil of one or more components, the lubricating utensil includes:

Shell, the shell is with the housing cavity at lubricating fluid storage tank liquid level comprising lubricating fluid and comprising one Or the component chamber of the first component in multiple components；

The first bearing of rotatable shaft is supported, the first bearing is located in the first side of component chamber；

Lubricating fluid is directed to component chamber via first bearing by the first lubrication channel, first lubrication channel；

First annular gap, the first annular gap provide first annular flow path between first bearing and component chamber, In the lubricating fluid from the first lubrication channel flow through first annular flow path to lubricate the first component；

Liquid collecting structure, the liquid collecting structure have lip-like edge and liquid reservoir, and the lip-like edge extends outwardly away from the housing cavity Part comprising lubricating fluid, the lip-like edge extend to top edge, and the top edge is at least partly in housing cavity Lubricating fluid storage tank ullage be located in housing cavity, the liquid reservoir is located at the top edge of the lip-like edge Lower section；With

Second lubrication channel, second lubrication channel extend into shell from the liquid collecting structure；

Wherein, the lip-like edge and liquid reservoir of the liquid collecting structure are collected the movement due to one or more of components and are splash The lubricating fluid of lubricating fluid storage tank ullage；And

Wherein, lubricating fluid is directed to component chamber from liquid collecting structure by second lubrication channel.

10. lubricating utensil according to claim 9, wherein third lubrication channel for executing air from one or Multiple components discharge and lubricating fluid one of be discharged or more from one or more of components operates.

11. lubricating utensil according to claim 9, wherein the first component is at least partly around described rotatable Axis.

12. lubricating utensil according to claim 11, wherein the first component includes being installed to the rotatable shaft Parking brake.

13. lubricating utensil according to claim 12, wherein the piston of the parking brake hinders in the first configuration Plug is from housing cavity to the oil lubrication path in component chamber.

14. lubricating utensil according to claim 9,

The second bearing of the rotatable shaft is wherein supported to be located in second side of component chamber；

Wherein, the second annular flow path is arranged in the second annular gap between second bearing and component chamber；

Wherein, lubricating fluid flows through the second annular flow path between second bearing and component chamber to lubricate the first component.