CN211423346U

CN211423346U - Gear box lubricating device

Info

Publication number: CN211423346U
Application number: CN201921520456.5U
Authority: CN
Inventors: 张再利; 汪星; 徐莎; 段振中; 王伟康
Original assignee: CRRC Qishuyan Institute Co Ltd
Current assignee: CRRC Qishuyan Institute Co Ltd
Priority date: 2019-09-12
Filing date: 2019-09-12
Publication date: 2020-09-04
Anticipated expiration: 2029-09-12

Abstract

The utility model relates to a gear box lubricating arrangement belongs to engineering machine tool gear drive technical field. The device comprises a horizontal shaft low-speed stage sun gear, two ends of which are respectively supported on a first axial thrust ring and a second axial thrust ring in an axial limiting manner, wherein the first axial thrust ring is embedded in a counter bore at the inner end of a box body end cover; an oil collecting box which is positioned above the first axial thrust ring and is communicated with the oil outlet at the bottom is fixed on the end cover of the box body, and the oil collecting box is provided with an oil inlet which is adjacent to and directly faces to the meshing position of the low-speed stage sun wheel and the low-speed stage planet wheel; the excircle of the first axial thrust ring is provided with a circumferential oil duct and a radially extending end surface oil groove, the circumferential oil duct corresponds to the oil outlet hole in position, and the circumferential oil duct is at least communicated with the inner hole of the circumferential oil duct through a radial oil hole or is communicated with the end surface oil groove through an axial oil duct. The utility model discloses properly solved and be located the lubricated difficult problem of the difficult special position part that splashes of low-speed marginal zone.

Description

Gear box lubricating device

Technical Field

The utility model relates to a transmission lubricating arrangement, especially a be suitable for lubricating arrangement of off-highway mine car wheel limit gear box belongs to engineering machine tool gear drive technical field.

Background

The off-highway mine car wheel side gear box is arranged in a vehicle tire and mainly used for driving the vehicle to move forwards by reducing the speed and increasing the torque. On a mechanical truck, usually at the very end of the drive train, the typical drive path is power from the engine first through the gearbox, to the main gearbox, and then to the wheel-side gearbox; in an electric wheel truck, the power of an engine is generally typically sent to a generator, then sent to a traction motor through a variable frequency control, and the traction motor converts the electric energy into mechanical energy with high speed and small torque, and then converted into low speed and large torque output through a gear transmission device of a wheel-side gearbox.

The hub gear box is usually a two-stage or three-stage transmission mechanism, and the high-speed low-torque load is input from the first stage and is gradually changed into the low-speed high-torque load. When the lubricating oil lubricating device works, a certain amount of lubricating oil is filled in the wheel-side gear box, and the parts such as gears, bearings, friction pairs and the like are lubricated in a splashing mode through oil stirring of rotating parts. However, due to the special position of individual parts inside the wheel-side gearbox, the lubricating oil cannot be lubricated in a 'splashing' manner, so that the service life of the parts is influenced, and the reliability of the wheel-side gearbox is further influenced.

Disclosure of Invention

The utility model aims to provide a: to the problems existing in the prior art, the wheel-side gearbox lubricating device capable of properly solving the problem of difficult part lubrication at the special position difficult to splash is provided.

In order to achieve the above object, the utility model discloses wheel limit gear box lubricating arrangement's basic technical scheme is: the low-speed planetary gear set comprises a horizontal shaft low-speed stage sun gear, wherein two ends of the horizontal shaft low-speed stage sun gear are respectively supported on a first axial thrust ring and a second axial thrust ring in an axial limiting manner, the first axial thrust ring is embedded in a counter bore at the inner end of a box body end cover, the box body end cover is fixed on a low-speed stage planetary carrier serving as a shell, the low-speed stage sun gear is externally meshed with a low-speed stage planetary gear, the low-speed stage planetary gear is internally meshed with a fixed gear ring, and the low-speed stage planetary gear is supported on a low-speed stage planetary pin shaft; an oil collecting box which is positioned above the first axial thrust ring and is communicated with the oil outlet at the bottom is fixed on the end cover of the box body, and the oil collecting box is provided with an oil inlet which is adjacent to and directly opposite to the meshing position of the low-speed stage sun gear and the low-speed stage planet gear; the excircle of first axial thrust ring has the position and corresponds the circumference oil duct and the radially extended terminal surface oil groove of oil outlet, the circumference oil duct communicates rather than the hole through radial oilhole at least, or communicates with the terminal surface oil groove through axial oil duct.

The utility model discloses a further perfection is, the collection oil box is the arc, is in and inlays between the counter bore outer lane of adorning first axial thrust ring and the interior circle of box end cover flange circle.

A further refinement of the present invention is that the oil collecting box is formed by a thin-walled metal plate welded to the end cap of the tank body.

The utility model discloses further perfection is again, terminal surface oil groove circumference equipartition, radial extension and outer shallow interior depth.

The utility model discloses further perfect again, horizontal axis low-speed level sun gear one end is through the spacing support in first axial thrust ring of its central axis axial, and the other end passes through the spacing support in second axial thrust ring of terminal surface counter bore axial, second axial thrust ring cover is at the undergauge axle head of preceding stage sun gear.

Therefore, during operation, oil extruded from gaps between the meshing teeth of the low-speed stage sun gear and the low-speed stage planet gear enters the oil collecting box through the oil inlet, then leaks to the circumferential oil duct of the first axial thrust ring from the bottom oil outlet, and then lubricates a rotating auxiliary surface and an axial limiting friction surface, wherein the rotating auxiliary surface and the axial limiting friction surface are formed by the inner hole of the first axial thrust ring and the low-speed stage sun gear through the radial oil hole or the end surface oil groove, so that the problem of lubrication of parts located in low-speed edge regions and difficult to splash special positions is solved properly.

Drawings

The present invention will be described in further detail with reference to the following embodiments, which are illustrated in the accompanying drawings.

Fig. 1 is a schematic structural diagram of an embodiment of the present invention.

Fig. 2 is a schematic perspective view of the end cap of the embodiment of fig. 1.

Fig. 3 is a schematic cross-sectional structural view of the end cover of the embodiment of fig. 1.

Figure 4 is a schematic perspective view of the first axial thrust ring of the embodiment of figure 1.

Figure 5 is a cross-sectional structural schematic view of the first axial thrust ring of the embodiment of figure 1.

Fig. 6 is a schematic perspective view of a first axial thrust ring according to another embodiment.

FIG. 7 is a cross-sectional structural schematic view of a first axial thrust ring of another embodiment.

Detailed Description

Example one

The basic structure of the gearbox lubricating device of the embodiment is shown in fig. 1, one end of a horizontal shaft low-speed stage sun gear 3 is axially limited and supported on a first axial thrust ring 2 through a central shaft thereof, and the other end of the horizontal shaft low-speed stage sun gear is axially limited and supported on a second axial thrust ring 10 through an end face counter bore. The first axial thrust ring 2 is embedded in a counter bore at the inner end of the box body end cover 1, and the second axial thrust ring 10 is sleeved at the reducing shaft end of the sun gear of the front stage 9 (high-speed stage).

The box body end cover 1 is fixed on a low-speed level planet carrier 4 serving as a shell (rotatable), a low-speed level sun gear 3 is externally meshed with a low-speed level planet gear 5, the low-speed level planet gear 5 is internally meshed with a fixed gear ring 8, the low-speed level planet gear 5 is supported on a low-speed level planet pin shaft 6 through a low-speed level planet gear bearing 7, and the planet pin shaft 6 is supported in pin holes which are uniformly distributed on the circumference of the inner end face of the low-speed level planet carrier 4.

As can be seen from fig. 2 and 3, the arc-shaped oil collecting box 1-1 which is positioned above the first axial thrust ring 2 and is communicated with the bottom oil outlet 1-3 is fixed on the box body end cover 1, and the arc-shaped oil collecting box 1-1 is positioned between the outer ring of the counter bore in which the first axial thrust ring 2 is embedded and the inner ring of the flange ring of the box body end cover 1 and is composed of a thin-wall metal plate welded on the box body end cover 1, so that the manufacturing process is simple and convenient. The oil collecting box 1-1 is provided with an end face oil inlet 1-2 which is adjacent to and opposite to the meshing position of the low-speed stage sun gear 3 and the low-speed stage planet gear 5.

The first axial thrust ring 2 is as shown in fig. 4 and 5, the outer circle is provided with a circular arc bottom circumferential oil channel 2-1 corresponding to the oil outlet 1-3 in position, four circular arc bottom end surface oil grooves 2-3 which are circumferentially uniformly distributed and radially extend and are shallow outside and deep inside are arranged, and the circumferential oil channel 2-1 is communicated with the inner hole of the circumferential oil channel through radial oil holes 2-2 which are circumferentially uniformly distributed and have angular positions corresponding to the end surface oil grooves 2-3.

As shown in fig. 6 and 7, the circumferential oil ducts 2-1 are communicated with the end face oil groove through axial oil ducts 2-2' which are uniformly distributed in the circumferential direction of the outer circle of the first axial thrust ring 2 and have angular positions corresponding to the end face oil groove 2-3.

Certainly, the circumferential oil duct 2-1 may be communicated with the inner hole of the end surface oil groove through the radial oil holes 2-2 which are circumferentially and uniformly distributed and whose angular positions correspond to the end surface oil grooves 2-3, or communicated with the end surface oil groove through the axial oil ducts 2-2' which are circumferentially and uniformly distributed on the outer circle of the first axial thrust ring 2 and whose angular positions correspond to the end surface oil grooves 2-3.

The lubricating device of this embodiment can realize the abundant lubrication of the difficult lubricated spare part that splashes of low-speed through setting up oil collecting box and lubrication channel, reaches the operation requirement of guaranteeing the gear box normal operating for a long time. The device has simple structure and low cost, and practices show that the device can effectively solve the problems that the internal position of the gear box is special and parts are difficult to lubricate by a conventional method.

In addition to the above embodiments, the present invention may have other embodiments. All the technical solutions formed by adopting equivalent substitutions or equivalent transformations fall within the protection scope claimed by the present invention.

Claims

1. A gear box lubricating device comprises a horizontal shaft low-speed stage sun wheel (3) with two ends respectively supported in a first axial thrust ring and a second axial thrust ring (2 and 10) in an axial limiting manner, wherein the first axial thrust ring is embedded in a counter bore at the inner end of a box body end cover (1), a box body end cover sealing cover is fixed on a low-speed stage planet carrier (4) serving as a shell, the low-speed stage sun wheel is externally meshed with a low-speed stage planet wheel (5), the low-speed stage planet wheel is internally meshed with a fixed gear ring (8), and the low-speed stage planet wheel is supported on a low-speed stage planet pin shaft (6) through a low-speed stage planet wheel bearing (7);

the method is characterized in that: an oil collecting box (1-1) which is positioned above the first axial thrust ring and is communicated with the bottom oil outlet hole (1-3) is fixed on the end cover of the box body, and the oil collecting box is provided with an oil inlet (1-2) which is adjacent to and directly opposite to the meshing position of the low-speed stage sun wheel (3) and the low-speed stage planet wheel (5); the outer circle of the first axial thrust ring is provided with a circumferential oil duct (2-1) and an end face oil groove (2-3), the position of the circumferential oil duct corresponds to that of the oil outlet hole, the end face oil groove extends in the radial direction, and the circumferential oil duct is at least communicated with an inner hole of the circumferential oil duct through a radial oil hole (2-2) or communicated with the end face oil groove through an axial oil duct (2-2').

2. A gearbox lubrication device as defined in claim 1, in which: the oil collecting box is arc-shaped and is positioned between the outer ring of the counter bore for embedding the first axial thrust ring and the inner circle of the flange ring of the end cover of the box body.

3. A gearbox lubrication device as defined in claim 2, in which: the oil collecting box is composed of a thin-wall metal plate welded on an end cover of the box body.

4. A gearbox lubrication device as defined in claim 3, in which: the end face oil grooves are circumferentially uniformly distributed, radially extend and are shallow and deep.

5. A gearbox lubrication device as defined in claim 4, in which: one end of the horizontal shaft low-speed stage sun gear is axially limited and supported on the first axial thrust ring through a central shaft of the horizontal shaft low-speed stage sun gear, the other end of the horizontal shaft low-speed stage sun gear is axially limited and supported on the second axial thrust ring through an end face counter bore, and the second axial thrust ring is sleeved at the reducing shaft end of the front stage sun gear.