Lubricating device for planetary mechanism of transmission

Abstract

A transmission planetary mechanism lubricating device comprises a planet carrier, a plurality of planet shafts are arranged in the planet carrier, the front end and the rear end of each planet shaft are fixedly connected with the front end and the rear end of the planet carrier, planet shaft oil holes are formed in the planet shafts, and lubricating oil holes are formed in the bottom ends of the planet shaft oil holes. The lubricating oil hole penetrates through the outer side hole wall of the planet shaft oil hole and is communicated with the planet shaft oil hole, an oil collecting disc is arranged on the outer side end face of the rear end of the planet carrier, the oil collecting disc is tightly attached to the outer side end face of the planet carrier, the oil collecting disc is fixedly connected with the planet shaft, and an oil inlet groove and a plurality of oil outlet grooves are formed in the inner end face of the oil collecting disc. The oil inlet groove is communicated with the oil outlet grooves to form oil passing channels, the oil outlet grooves are communicated with the planet shaft oil holes, flow dividing grooves are formed in the middles of the oil passing channels, flow dividers are arranged in the flow dividing grooves, flow dividing holes are formed in the middles of the flow dividers, and the flow dividing holes are communicated with the oil passing channels. A sealing ring is arranged on the end face of the joint of the oil collecting tray and the planet carrier.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of automobile transmission, concretely relates to a transmission planetary mechanism lubricating device. BACKGROUND

[0002] The planet wheel in the automobile transmission planetary mechanism rotates at high speed around the planet carrier, the needle bearing for supporting the high-speed rotation of the planet wheel is arranged on the outer surface of the planet shaft, and due to the high relative linear velocity, sufficient lubrication is needed to prevent problems such as burning of the bearing roller and shedding of the retainer. Generally, the lubricating oil is pumped into the planetary mechanism by an electronic oil pump inside the transmission assembly, and the planet shaft usually has multiple arrangements distributed inside the planet carrier. The conventional planetary mechanism device lacks an effective device for reasonably distributing the lubricating oil flow pumped to each planet shaft and a sealing structure of the pumping channel, and the lubricating oil flowing inside the channel is easily concentrated and flows in the radial direction under the centrifugal force generated by the high-speed rotation of the planetary mechanism, which leads to relatively excessive lubricating flow in one planet shaft in the planetary mechanism and relatively insufficient lubricating flow in another planet shaft, resulting in poor lubrication of the needle bearing on the surface of the other planet shaft, burning of the bearing roller and shedding of the retainer, and further leading to gear pitting and tooth breakage of the planet wheel carried by the planet shaft, and even complete damage of the transmission planetary mechanism. SUMMARY

[0003] The utility model aims at the corresponding insufficient of prior art, provides a kind of transmission planetary mechanism lubricating device. This transmission planetary mechanism lubricating device aims at solving the problems of lacking effective flow distribution structure and lubricating oil leakage structure on the conventional planet carrier structure, so as to cause the failure of bearing and gear pair parts.

[0004] The utility model aims at the following scheme realization: a kind of transmission planetary mechanism lubricating device, including planet carrier, the inside of the planet carrier is provided with multiple planet shafts, the front and rear ends of the planet shaft are connected and fixed with the front and rear ends of planet carrier, the inside of the planet shaft is provided with planet shaft oil hole, the bottom end of the planet shaft oil hole is provided with lubricating oil hole, the lubricating oil hole is through the outside hole wall of planet shaft oil hole and is communicated with planet shaft oil hole, the outside end face of the rear end of the planet carrier is provided with oil collecting disc, and the outside end face of the planet carrier is tightly attached, and the oil collecting disc is connected and fixed with the planet shaft, the inside end face of the oil collecting disc is provided with oil inlet groove and multiple oil outlet grooves, the oil inlet groove is communicated with each oil outlet groove to form oil passage, the oil outlet groove is communicated with planet shaft oil hole, the middle part of each oil passage is provided with shunt groove, the shunt groove is provided with shunt device, the middle part of the shunt device is provided with shunt hole, and the shunt hole is communicated with oil passage, the connecting place end face of the oil collecting disc and planet carrier is provided with sealing ring to seal.

[0005] The planetary shafts are arranged uniformly in 360° inside the planet carrier, and at least three planetary shafts are arranged axially in the planet carrier.

[0006] The front end of the oil outlet groove of the oil collecting disc is provided with a clamping jaw, the clamping jaw is perpendicular to the end surface of the oil collecting disc, a clamping groove is arranged radially in the middle part of the planetary shaft oil hole, and the clamping jaw is clamped in the clamping groove, so that the oil collecting disc is connected and fixed with the planetary shaft.

[0007] The two end parts of the flow distribution groove are arranged on the oil collecting disc, and the flow distribution groove is perpendicular to the oil outlet groove.

[0008] The flow distributor is rectangular, the flow distributor is perpendicular to the oil outlet groove, and the flow distribution hole is arranged axially in the middle part of the flow distributor.

[0009] The number of the oil outlet groove and the flow distributor on the oil collecting disc is the same as the number of the planetary shaft.

[0010] The lubricating oil hole penetrates the outer hole wall of the planetary shaft oil hole radially, and the lubricating oil hole is perpendicular to the planetary shaft oil hole.

[0011] The planetary shaft oil hole is arranged axially in the inside of the planetary shaft, and the hole depth of the planetary shaft oil hole is 1 / 2 of the shaft length of the planetary shaft.

[0012] The sealing ring is an O-shaped sealing ring, a D-shaped sealing ring or a Y-shaped sealing ring, and the sealing ring is arranged at the connection part of the oil collecting disc and the planet carrier in 360°.

[0013] The automobile transmission comprises the transmission planetary mechanism lubricating device.

[0014] The lubricating oil in the planetary mechanism oil collecting disc is accurately distributed and adjusted through the flow distribution holes of the plurality of flow distributors arranged in the oil collecting groove, is guided to the lubricating oil hole of the planetary shaft needing lubrication through the oil outlet groove, is guided out of the planetary shaft through the lubricating oil hole, and is used for lubricating the planet wheel needle bearing. The oil groove channel flowing through the oil collecting disc is radially sealed through the sealing ring. The planetary mechanism lubricating device aims to reduce the lubricating oil leakage of the oil collecting disc, improve the lubricating oil utilization rate flowing to the planetary shaft oil hole, and reduce the lubricating flow demand of the electronic oil pump of the device required to drive the lubricating oil flow in the case that the bearings and gear pairs needing lubrication installed on the planetary shaft of the planetary mechanism have the same heating condition, so that the electric energy consumption of the electronic oil pump is reduced, and the transmission assembly efficiency is improved. The energy consumption of the automobile transmission assembly is lower, and the fuel and electric energy economy of the whole vehicle is better. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the utility model;

[0016] Figure 2 It is a sectional view of the utility model;

[0017] Figure 3 Fig. 1 is a schematic view of an oil collection pan structure;

[0018] Figure 4 Fig. 2 is a schematic view of a planetary shaft structure;

[0019] Figure 5 Fig. 3 is a schematic view of a flow divider structure;

[0020] Figure 6 Fig. 4 is a schematic view of a seal ring structure. DETAILED DESCRIPTION

[0021] As Figures 1 to 6As shown in the figure, a kind of transmission planetary mechanism lubricating device, including planet carrier 1, the inside of the planet carrier 1 is arranged with multiple planetary shafts 2, the planetary shafts 2 are arranged uniformly in 360 ° in the inside of planet carrier 1, and at least three planetary shafts 2 are arranged in planet carrier 1.The front and rear ends of the planetary shafts 2 are connected and fixed with the front and rear ends of the planet carrier 1, the inside of the planetary shafts 2 is provided with planetary shaft oil hole 14, the planetary shaft oil hole 14 is arranged in the inside of the planetary shafts 2, and the hole depth of the planetary shaft oil hole 14 is 1 / 2 of the shaft length of the planetary shafts 2.The bottom end of the planetary shaft oil hole 14 is provided with lubricating oil hole 15, the lubricating oil hole 15 penetrates the outside hole wall of the planetary shaft oil hole 14 radially, the lubricating oil hole 15 is perpendicular to the planetary shaft oil hole 14 and communicates with the planetary shaft oil hole 14, the outside end face of the rear end of the planet carrier 1 is provided with oil collecting disc 3, the oil collecting disc 3 is closely attached to the outside end face of the planet carrier 1, the front end of the oil outlet groove 13 of the oil collecting disc 3 is provided with clamping jaw 20, the clamping jaw 20 is perpendicular to the end face of the oil collecting disc 3, a clamping groove 21 is radially arranged in the middle of the planetary shaft oil hole 14, the clamping jaw 20 is clamped in the clamping groove 21, the oil collecting disc 3 is connected and fixed with the planetary shafts 2, the inside end face of the oil collecting disc 3 is provided with oil inlet groove 11 and multiple oil outlet grooves 13, the oil inlet groove 11 and each oil outlet groove 13 respectively communicate to form oil passing channel, the oil outlet groove 13 communicates with the planetary shaft oil hole 14, and a flow dividing groove 30 is arranged in each oil passing channel, the two end portions of the flow dividing groove 30 are arranged on the oil collecting disc 3, and the flow dividing groove 30 is perpendicular to the oil outlet groove 13.A flow divider 5 is arranged in the flow dividing groove 30, the middle portion of the flow divider 5 is provided with flow dividing hole 12, the flow divider 5 is rectangular, the flow divider 5 is perpendicular to the oil outlet groove 13, and the flow dividing hole 12 is axially arranged in the middle portion of the flow divider 5.The flow of lubricating oil passing through the flow divider 5 is controlled by adjusting the diameter of the flow dividing hole 12.The flow dividing hole 12 communicates with the oil passing channel, a sealing ring 4 is arranged at the connecting place of the oil collecting disc 3 and the planet carrier 1 to seal, the sealing ring 4 is arranged around the connecting place of the oil collecting disc 3 and the planet carrier 1 in 360 °, so as to prevent lubricating oil from leaking.The number of the oil outlet groove 13 and the flow divider 5 on the oil collecting disc 3 is the same as the number of the planetary shafts 2.The sealing ring 4 is O-shaped sealing ring, D-shaped sealing ring or Y-shaped sealing ring or other commonly used sealing structure type sealing ring.

[0022] A kind of automobile transmission, including the transmission planetary mechanism lubricating device described above.

[0023] As Figure 2 shown, the arrow direction is the lubricating oil flow direction, and in the device, lubricating oil flows into the middle of the oil collecting disc 3, enters the flow dividing hole 12 in the three symmetrical arranged flow dividers 5 through the oil inlet groove 11 in the inside of the oil collecting disc 3, flows into the planetary shaft oil hole 14 in the middle of each planetary shaft 2 after flow distribution through the flow dividing hole 12, flows out through the lubricating oil hole 15 on the top of the planetary shaft 2, and is used to lubricate the needle bearing of the planetary gear.

[0024] The above merely describes preferred embodiments of the present application and is not intended to limit the present application. Any modification made by those skilled in the art without departing from the spirit of the present application shall fall within the scope of the present application.

Claims

1. A lubrication device for a planetary gearbox mechanism, comprising a planet carrier (1), characterized in that: The planetary carrier (1) is internally provided with multiple planetary shafts (2). The front and rear ends of the planetary shafts (2) are connected and fixed to the front and rear ends of the planetary carrier (1). The planetary shafts (2) are internally provided with planetary shaft oil holes (14). The bottom end of the planetary shaft oil holes (14) is provided with lubricating oil holes (15). The lubricating oil holes (15) penetrate the outer wall of the planetary shaft oil holes (14) and communicate with the planetary shaft oil holes (14). The outer end face of the rear end of the planetary carrier (1) is provided with an oil collection plate (3). The oil collection plate (3) is tightly fitted with the outer end face of the planetary carrier (1). The oil collection plate (3) is connected to the planetary shafts (2). The oil collection plate (3) is fixed, and an oil inlet groove (11) and multiple oil outlet grooves (13) are provided on the inner end face of the oil collection plate (3). The oil inlet groove (11) and each oil outlet groove (13) are connected to form an oil passage. The oil outlet groove (13) is connected to the planetary shaft oil hole (14). A diversion groove (30) is provided in the middle of each oil passage. A diverter (5) is provided in the diversion groove (30). A diversion hole (12) is provided in the middle of the diverter (5). The diversion hole (12) is connected to the oil passage. A sealing ring (4) is provided at the end face of the connection between the oil collection plate (3) and the planetary carrier (1) for sealing.

2. The lubrication device for the planetary mechanism of the transmission according to claim 1, characterized in that: The planetary shafts (2) are evenly arranged in a 360° pattern inside the planet carrier (1), and at least three planetary shafts (2) are arranged axially in the planet carrier (1).

3. The lubrication device for the planetary mechanism of the transmission according to claim 1, characterized in that: The front end of the oil outlet groove (13) of the oil collection plate (3) is provided with a claw (20), the claw (20) is perpendicular to the end face of the oil collection plate (3), a groove (21) is radially provided in the middle of the planetary shaft oil hole (14), the claw (20) is engaged in the groove (21), and the oil collection plate (3) is connected and fixed to the planetary shaft (2).

4. The lubrication device for the planetary mechanism of the transmission according to claim 1, characterized in that: The two ends of the diversion groove (30) are set on the oil collection plate (3), and the diversion groove (30) and the oil outlet groove (13) are perpendicular to each other.

5. The lubrication device for the planetary mechanism of the transmission according to claim 1, characterized in that: The distributor (5) is rectangular and perpendicular to the oil outlet groove (13). The diversion hole (12) is axially located in the middle of the distributor (5).

6. The lubrication device for the planetary mechanism of the transmission according to claim 1, characterized in that: The number of oil outlet grooves (13) and distributors (5) on the oil collection plate (3) is the same as the number of planetary shafts (2).

7. The lubrication device for the planetary mechanism of the transmission according to claim 1, characterized in that: The lubricating oil hole (15) radially penetrates the outer wall of the planetary shaft oil hole (14), and the lubricating oil hole (15) and the planetary shaft oil hole (14) are perpendicular to each other.

8. The lubrication device for the planetary mechanism of the transmission according to claim 1, characterized in that: The planetary shaft oil hole (14) is axially located inside the planetary shaft (2), and the depth of the planetary shaft oil hole (14) is 1 / 2 of the axial length of the planetary shaft (2).

9. The lubrication device for the planetary mechanism of the transmission according to claim 1, characterized in that: The sealing ring (4) is an O-ring, D-ring or Y-ring, and the sealing ring (4) is arranged 360° around the connection between the oil collection plate (3) and the planetary carrier (1).

10. An automobile transmission, characterized in that: Includes the lubrication device for the planetary mechanism of the transmission as described in any one of claims 1-9.

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