CN212717911U - Planetary gear transmission lubricating system - Google Patents

Abstract

The utility model relates to a planetary gear derailleur lubricating system, including the casing of derailleur body, the inside lubrication passage who communicates the oil reservoir that is equipped with of casing, lubrication passage lead to the peripheral lubricated component of treating of sun gear of derailleur body, the peripheral lubricated component of treating of planet wheel axle, input shaft and output shaft in the peripheral lubricated component of treating of the inside outer end of casing respectively. The characteristics of few gears and few planetary rows and gear shifting mechanisms of the new energy automobile transmission are utilized, and the lubricating requirement can be met without an oil pump.

Description

Planetary gear transmission lubricating system

Technical Field

The utility model relates to a planetary gear derailleur lubricating system relates to the planetary gear derailleur field, especially relates to the lubricated field of new energy automobile keeps off a position planetary gear derailleur less.

Background

In the field of traditional automobile transmissions, gears and bearings in a parallel shaft transmission are axially arranged and radially distributed in parallel, the gears cannot be mutually wrapped, a gear shifting mechanism and the gears are distributed in different chambers or distributed in the same chamber, and even if the gears or the bearings cannot be wrapped in the same chamber, lubricating conditions can be met by splashing of lubricating oil of the parallel shaft transmission. In the field of planetary gear transmissions, the wrapping phenomenon of gears and the wrapping phenomenon of a gear and a bearing by a gear shifting mechanism exist, related components block the gears, the bearing and a friction plate, lubricating oil splashed under the action of wrapping, blocking and centrifugal force is difficult to reach parts close to an axis, and lubricating oil is sprayed to parts needing to be lubricated in the central axial direction by driving an oil pump by an engine. However, in the field of new energy automobiles, because the rotating speed of the motor is very low when the automobile is at a low speed, the flow of the oil pump driven by the motor is difficult to meet the lubricating requirement, and the special electronic oil pump system is arranged, so that the cost is high, the size is large, and the energy loss is increased.

SUMMERY OF THE UTILITY MODEL

In view of prior art's not enough, the utility model aims to solve the technical problem that a planetary gear derailleur lubricating system is provided, utilize new energy automobile derailleur to keep off the position less, the planet is arranged and the few characteristics of gearshift, can also satisfy lubricated requirement without the oil pump.

In order to solve the technical problem, the technical scheme of the utility model is that: a lubrication system of a planetary gear transmission comprises a shell of a transmission body, wherein a lubrication passage communicated with an oil reservoir is arranged in the shell, and the lubrication passage is respectively communicated with a to-be-lubricated element at the periphery of a sun wheel, a to-be-lubricated element at the periphery of a planet wheel shaft, and an element to be lubricated at the periphery of the outer end of an input shaft and an output shaft in the shell.

Preferably, the lubrication passage passes through an input shaft internal oil passage.

Preferably, the middle part in the input shaft is provided with a first oil duct, the left end or two ends of the first oil duct are closed, the left end of the first oil duct is provided with at least one first oil hole, one end of the first oil hole is communicated with the first oil duct, the other end of the first oil hole is communicated with a second oil cavity, the second oil cavity is communicated with the first oil cavity, the first oil cavity is communicated with an oil reservoir, the right side of the first oil hole is provided with at least one second oil hole, one end of the second oil hole is communicated with the first oil duct, the other end of the second oil hole faces to a component to be lubricated on the periphery of the sun wheel, the right side of the first oil hole is also provided with at least one third oil hole, one end of the third oil hole is communicated with the first oil duct, the other end of the third oil hole faces to the oil groove of.

Preferably, the input shaft is in rolling connection with the shell through a first bearing, an oil seal is arranged on the left side of the first bearing to prevent lubricating oil from flowing out of the shell from the left side, and a bearing cover is arranged on the right side of the first bearing to enable the oil seal and the bearing cover of the first bearing to form axial sealing and enclose a second oil cavity with the shell and the input shaft; one end of the input shaft in the shell is sleeved in the middle of one end of the output shaft in the shell and is connected with the output shaft through a second bearing; the output shaft is in rolling connection with the shell through a fifth bearing, and an oil seal is arranged on the right side of the fifth bearing to prevent lubricating oil from flowing out of the shell from the right side; at least one fourth oil hole is arranged on the same vertical loading surface of the output shaft and the third oil hole, and lubricating oil is thrown into an oil groove of the planet carrier from the third oil hole through the fourth oil hole; the planet row of the speed changer body consists of a sun gear, a planet carrier and a gear ring; the planet carrier consists of a bracket, a planet wheel shaft, a third bearing, a fourth bearing and a second oil baffle plate; the second oil baffle is arranged on the right side face of the planet carrier, the periphery of the outer side of the second oil baffle is fixedly connected with the support and sealed, the periphery of the inner side of the second oil baffle is outwards unfolded, lubricating oil can be collected conveniently, and the second oil baffle and the support enclose into an oil groove.

Preferably, two ends of the planet wheel shaft are fixedly connected with the bracket, a second oil duct is arranged in the middle of the planet wheel shaft, one end of the second oil duct is closed, the other end of the second oil duct is open and communicated with the oil groove, an eighth oil hole, a ninth oil hole and a tenth oil hole are radially arranged on the planet wheel shaft, one end of the eighth oil hole faces to the left fourth bearing, one end of the ninth oil hole faces to the middle third bearing, one end of the tenth oil hole faces to the right fourth bearing, and the other ends of the three oil holes are communicated with the second oil duct; the sum of the diameters of the eighth oil hole, the ninth oil hole and the tenth oil hole is not more than that of the second oil duct so as to ensure that enough lubricating oil passes through each oil hole, the planet wheel is in rolling connection with the planet wheel shaft through a third bearing, and two ends of the planet wheel are in relative rotation connection with the support through fourth bearings respectively; the input shaft, the output shaft, the sun gear, the planet carrier, the gear ring and other relative rotating parts are connected through a second bearing.

Preferably, the upper part of the shell of the transmission body is provided with at least one oil reservoir, the oil reservoir is arranged in the shell or outside the shell, an oil inlet of the oil reservoir is upward and communicated with the inner cavity of the transmission body, an oil outlet of the oil reservoir is arranged at the bottom of the oil reservoir and communicated with the upper part of the filter of the first oil cavity, the oil outlet of the oil reservoir is not too large, and the flow capacity and the amount of oil splashed into the first oil cavity are larger than the oil outlet amount of the second oil hole and the third oil hole; at least one first oil cavity is arranged above the input shaft in the shell, the first oil cavity is formed by a first oil baffle plate and the shell in a surrounding mode, the upper portion of the first oil baffle plate keeps a certain distance from the shell to form an oil inlet, the upper portion of the first oil baffle plate is low, lubricating oil splashed at a low position conveniently enters the first oil cavity, the periphery of the rest portion is fixedly connected with the shell, the connection position is sealed, and an oil outlet of the first oil cavity is arranged at the bottom of the first oil cavity and communicated with the second oil cavity; the lower part of the shell is provided with at least one seventh oil hole, the oil outlet of the seventh oil hole is higher than the bottom shell, so that bottom sediments are prevented from being stirred during oil outlet, the shell at the position of the oil reservoir close to the oil inlet is provided with at least one sixth oil hole, and the sixth oil hole is communicated with the seventh oil hole at the bottom through an oil pipe or an oil channel processed on the shell; a filter is arranged in the first oil chamber.

Preferably, the upper part in the shell is provided with at least one oil receiving plate, the oil receiving plate is fixedly connected with the shell or fixedly connected with the opening part of the oil reservoir, one end, close to an oil inlet of the oil reservoir, of the oil receiving plate is the lowest and leads to the inside of the oil reservoir, and lubricating oil stirred up when a transmission driving part or a gear shifting element rotates can flow into the inside of the oil reservoir through the oil receiving plate, so that more splashing lubricating oil can be received; the bottom of the right side surface of the first oil baffle plate is provided with a first oil guide rib, the first oil guide rib inclines towards the first bearing from top to bottom, and splashed lubricating oil can flow to the first bearing along the first oil guide rib for lubricating the first bearing; at least one second oil guide rib is arranged on the shell on the right side of the transmission body, extends into the inner ring of the oil groove from the upper right to the lower left and does not interfere with the support of the planet carrier and the second oil baffle plate, and a fifteenth oil hole extending to the fifth bearing is formed in the lower section of the second oil guide rib so that lubricating oil can flow to the fifth bearing; the clutch and the brake are positioned on the periphery of the outer side of the planetary row in the shell, and oil grooves of friction elements of the clutch and the brake are communicated with the planetary row through a fifth oil hole; the clutch consists of a clutch drum, a clutch hub, a first friction plate and a first steel sheet; the brake consists of a second friction plate and a second steel sheet, the second friction plate is in sliding connection with one member of the planet row through an inner spline, and the second steel sheet is in sliding connection with the shell through an outer spline; the clutch drum, the clutch hub, the first friction plate and the first steel plate are respectively connected with the relevant members of the planet row in a sliding mode or a fixed mode according to the design intention of the transmission.

The other planetary gear transmission lubricating system comprises a shell of a transmission body, wherein a lubricating passage communicated with an oil reservoir is arranged in the shell, and the lubricating passage is respectively communicated with a to-be-lubricated element on the periphery of a sun wheel, a to-be-lubricated element on the periphery of a planet wheel shaft, and an to-be-lubricated element on the periphery of the outer end of an input shaft and an output shaft in the shell; the lubricating passage does not pass through an internal oil passage of the input shaft; an oil outlet of the oil reservoir is communicated with a first oil chamber, the first oil chamber is surrounded by the shell and a first oil baffle plate on the right side, and the first oil chamber is communicated with the sun gear and other elements to be lubricated on the periphery of other related components of the planet row through an eleventh oil hole on the first oil baffle plate and a twelfth oil hole on the left end surface of the planet row; the input shaft is in rolling connection with the shell through a first bearing, and an oil seal is arranged on the left side of the first bearing to prevent lubricating oil from flowing out of the shell from the left side; one end of the input shaft in the shell is sleeved in the middle of one end of the output shaft in the shell and is connected with the output shaft through a second bearing; the output shaft is in rolling connection with the shell through a fifth bearing, and an oil seal is arranged on the right side of the fifth bearing to prevent lubricating oil from flowing out of the shell from the right side; the output shaft is provided with at least one thirteenth oil hole, the drift diameter of the thirteenth oil hole is large enough, lubricating oil entering the thirteenth oil hole cannot be thrown out completely due to centrifugal force, and partial lubricating oil can flow into a second bearing between the input shaft and the output shaft from the thirteenth oil hole; the planet row of the speed changer body consists of a sun gear, a planet carrier and a gear ring; the planet carrier consists of a bracket, a planet wheel shaft, a third bearing, a fourth bearing and a second oil baffle plate; the second oil baffle is arranged on the right side surface of the planet carrier, the outer periphery of the second oil baffle is fixedly connected and sealed with the support, the inner periphery of the second oil baffle is outwards unfolded, lubricating oil can be collected conveniently, and an oil groove is defined by the second oil baffle and the support; the two ends of the planet wheel shaft are fixedly connected with the bracket, a second oil duct is arranged in the middle of the planet wheel shaft, one end of the second oil duct is closed, the other end of the second oil duct is opened and communicated with the oil groove, an eighth oil hole, a ninth oil hole and a tenth oil hole are radially arranged on the planet wheel shaft, one end of the eighth oil hole faces to a left fourth bearing, one end of the ninth oil hole faces to a middle third bearing, one end of the tenth oil hole faces to a right fourth bearing, and the other ends of the three oil holes are communicated with the second oil duct; the sum of the diameters of the eighth oil hole, the ninth oil hole and the tenth oil hole is not more than that of the second oil duct so as to ensure that enough lubricating oil passes through each oil hole, the planet wheel is in rolling connection with the planet wheel shaft through a third bearing, and two ends of the planet wheel are in relative rotation connection with the support through fourth bearings respectively; the input shaft, the output shaft, the sun gear, the planet carrier, the gear ring and other relative rotating parts are connected through a second bearing; a first oil chamber of the right shell is arranged above the output shaft in the shell and close to the oil groove, the first oil chamber of the right shell is communicated with a thirteenth oil hole, the oil groove and a fifth bearing through a fourteenth oil hole respectively, and the fourteenth oil hole inclines from top right to bottom left so as to improve the impulsive force of lubricating oil entering the thirteenth oil hole and ensure that certain lubrication can reach a second bearing between the input shaft and the output shaft; the oil storage device is arranged in the shell or outside the shell, an oil inlet of the oil storage device faces upwards and is communicated with an inner cavity of the transmission body, an oil outlet of the oil storage device is arranged at the bottom of the oil storage device and is communicated with the upper part of the filter of the first oil cavity, the upper part of the filter comprising the first oil cavity of the right shell is communicated, the oil outlet of the oil storage device is not too large, and the flow capacity and the amount of oil splashed into the first oil cavity are larger than the sum of the oil output of the eleventh oil hole, the fourteenth oil hole and the fifteenth oil hole; at least one first oil cavity and at least one right shell first oil cavity are arranged above the input shaft in the shell, the first oil cavity is enclosed by a first oil baffle plate and the shell, a certain distance is kept between the upper part of the first oil baffle plate and the shell to form an oil inlet, the upper part of the first oil baffle plate is low, lubricating oil splashed at a low position conveniently enters the first oil cavity, the periphery of the rest part is fixedly connected with the shell, and the connection part is sealed; the lower part of the shell is provided with at least one seventh oil hole, the oil outlet of the seventh oil hole is higher than the bottom shell, so that bottom sediments are prevented from being stirred during oil outlet, the shell at the position of the oil reservoir close to the oil inlet is provided with at least one sixth oil hole, and the sixth oil hole is communicated with the seventh oil hole at the bottom through an oil pipe or an oil channel processed on the shell; a filter is arranged in the first oil cavity; the upper part in the shell is provided with at least one oil receiving plate, the oil receiving plate is fixedly connected with the shell or fixedly connected with the opening part of the oil reservoir, one end, close to an oil inlet of the oil reservoir, of the oil receiving plate is the lowest and leads to the inside of the oil reservoir, and lubricating oil stirred up when a transmission driving part or a gear shifting element rotates can flow into the inside of the oil reservoir through the oil receiving plate, so that more lubricating oil which splashes can be received; at least one first oil guiding rib is machined at the right side surface and the bottom of the right side of the first oil baffle plate, and the first oil guiding rib inclines towards the first bearing from top to bottom so as to increase the lubricating oil supply quantity of the first bearing; the shell on the right side of the transmission body is provided with at least one second oil guide rib, the second oil guide rib is positioned below the first oil cavity of the right shell, the fourteenth oil hole is positioned in the second oil guide rib and communicated with the first oil cavity of the right shell, the second oil guide rib extends into the inner ring of the oil groove from the upper right to the left and does not interfere with the bracket of the planet carrier and the second oil baffle, the lower section of the second oil guide rib is internally provided with a fifteenth oil hole extending to a fifth bearing, and the fifteenth oil hole is communicated with the fourteenth oil hole so that lubricating oil can flow to the fifth bearing; the clutch and the brake are positioned on the periphery of the outer side of the planetary row in the shell, and oil grooves of friction elements of the clutch and the brake are communicated with the planetary row through a fifth oil hole; the clutch consists of a clutch drum, a clutch hub, a first friction plate and a first steel sheet; the brake consists of a second friction plate and a second steel sheet, the second friction plate is in sliding connection with one member of the planet row through an inner spline, and the second steel sheet is in sliding connection with the shell through an outer spline; the clutch drum, the clutch hub, the first friction plate and the first steel plate are respectively connected with the relevant members of the planet row in a sliding mode or a fixed mode according to the design intention of the transmission.

Compared with the prior art, the utility model discloses following beneficial effect has: the lubricating system of the planetary gear transmission does not need an oil pump and a control device, thereby avoiding failure risk and saving space, cost and energy; the lubricating passages are respectively communicated with a to-be-lubricated element at the periphery of a sun wheel, a to-be-lubricated element at the periphery of a planet wheel shaft, an input shaft and an output shaft of the speed changer body, the to-be-lubricated elements are arranged at the periphery of the inner end and the outer end of the shell, when the speed of the speed changer is high, the oil throwing amount is large under the action of centrifugal force, the required oil supply amount is correspondingly large, the speed changer is high in rotating speed and large in splashing oil amount, oil entering an oil cavity and an oil reservoir is also large, the oil supply amount of a lubricating component is also large, the lubricating oil amount demand is small at low. The utility model discloses a lubricated fuel feeding of device receives the temperature influence not big, and this lubricated part all obtains abundant and stable lubrication, avoids causing lubricated fuel feeding unstability because of the oil temperature problem.

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

Drawings

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

Fig. 2 is a schematic structural view of embodiment 2 of the present invention.

Fig. 3 is a schematic structural view of embodiment 3 of the present invention.

Fig. 4 is a schematic structural diagram of the planetary gear shaft.

Description of the drawings:

the housing 1, the oil reservoir 2, the input shaft 3, the first oil passage 4, the first oil hole 5, the second oil chamber 6, the second oil hole 7, the third oil hole 8, the oil groove 9, the first bearing 10, the oil seal 11, the second bearing 12, the fifth bearing 13, the fourth oil hole 14, the sun gear 15, the planet gear 16, the planet gear shaft 17, the third bearing 18, the fourth bearing 19, the second oil baffle 20, the carrier 21, the second oil passage 22, the eighth oil hole 23, the ninth oil hole 24, the tenth oil hole 25, the oil inlet 26, the oil outlet 27 of the oil reservoir, the first oil chamber 28, the seventh oil hole 29, the sixth oil hole 30, the filter 31, the oil receiving plate 32, the first oil guiding rib 33, the first oil baffle 34, the second oil guiding rib 35, the clutch 36, the brake 37, the fifth oil hole 38, the eleventh oil hole 39, the twelfth oil hole 40, the thirteenth oil hole 41, the fourteenth oil hole 42, the oil hole 43, the third oil hole 44, the piston 45, the clutch mechanism comprises a sealing ring 46, an air chamber 47, an air inlet 48, a spring 49, a planet row 50, an output shaft 51, a right shell first oil chamber 52, a fifteenth oil hole 53, a sixteenth oil hole 54, a spline clearance oil groove 55 and a clutch drum 56.

Detailed Description

In order to make the aforementioned and other features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.

Example 1:

as shown in fig. 1 and 4, the lubricating system of the planetary gear transmission comprises a shell 1 of a transmission body, wherein a lubricating passage communicated with an oil reservoir 2 is arranged in the shell, and the lubricating passage is respectively communicated with a to-be-lubricated element around a sun gear, a to-be-lubricated element around a planet gear shaft, an input shaft and a to-be-lubricated element around the outer end of an output shaft 51 in the shell.

In the embodiment of the utility model provides an in, lubricated passageway is through 3 inside oil ducts of input shaft.

In the embodiment of the present invention, the middle portion in the input shaft is provided with the first oil duct, the left end or both ends of the first oil duct are closed, the left end of the first oil duct 4 is provided with at least one first oil hole 5, one end of the first oil hole is communicated with the first oil duct, the other end is communicated with the second oil cavity 6, the second oil cavity is communicated with the first oil cavity, the first oil cavity is communicated with the oil reservoir, the right side of the first oil hole is provided with at least one second oil hole 7, one end of the second oil hole is communicated with the first oil duct, the other end faces the periphery of the sun wheel to treat the lubricating element, the right side of the first oil hole is further provided with at least one third oil hole 8, one end of the third oil hole is communicated with the first oil duct, the other end faces the inside of the oil groove 9 of the planet carrier, preferably, when both ends of the first.

In the embodiment of the present invention, the input shaft is connected to the housing through the first bearing 10 in a rolling manner, the left side of the first bearing is provided with the oil seal 11 to prevent the lubricating oil from flowing out of the housing from the left side, and the right side of the first bearing is provided with the bearing cap to form an axial seal between the oil seal and the bearing cap of the first bearing and enclose a second oil cavity with the housing and the input shaft; one end of the input shaft in the shell is sleeved in the middle of one end of the output shaft in the shell and is connected with the output shaft through a second bearing 12; the output shaft is in rolling connection with the shell through a fifth bearing 13, and an oil seal is arranged on the right side of the fifth bearing to prevent lubricating oil from flowing out of the shell from the right side; at least one fourth oil hole 14 is arranged on the same vertical loading surface of the output shaft and the third oil hole, and lubricating oil is thrown into an oil groove of the planet carrier from the third oil hole through the fourth oil hole; the planet row 50 of the transmission body consists of a sun gear 15, a planet carrier and a gear ring; the planet carrier consists of a bracket, a planet wheel 16, a planet wheel shaft 17, a third bearing 18, a fourth bearing 19 and a second oil baffle 20; the second oil baffle is arranged on the right side face of the planet carrier, the periphery of the outer side of the second oil baffle is fixedly connected and sealed with the support 21, the periphery of the inner side of the second oil baffle is outwards unfolded, lubricating oil can be collected conveniently, and the second oil baffle and the support enclose an oil groove.

In the embodiment of the utility model, two ends of the planet wheel shaft are fixedly connected with the bracket, the middle of the planet wheel shaft is provided with a second oil duct 22, one end of the second oil duct is closed, the other end is open and communicated with the oil groove, the planet wheel shaft is provided with an eighth oil hole 23, a ninth oil hole 24 and a tenth oil hole 25 in the radial direction, one end of the eighth oil hole faces to the left fourth bearing, one end of the ninth oil hole faces to the middle third bearing, one end of the tenth oil hole faces to the right fourth bearing, and the other ends of the three oil holes are communicated with the second oil duct; the sum of the diameters of the eighth oil hole, the ninth oil hole and the tenth oil hole is not more than that of the second oil duct so as to ensure that enough lubricating oil passes through each oil hole, the planet wheel is in rolling connection with the planet wheel shaft through a third bearing, and two ends of the planet wheel are in relative rotation connection with the support through fourth bearings respectively; the input shaft, the output shaft, the sun gear, the planet carrier, the gear ring and other relative rotating parts are connected through a second bearing.

In the embodiment of the utility model, at least one oil reservoir is arranged on the upper part of the shell of the transmission body, the oil reservoir is arranged in the shell or outside the shell, the oil inlet 26 of the oil reservoir faces upwards and is communicated with the inner cavity of the transmission body, the oil outlet 27 of the oil reservoir is arranged at the bottom of the oil reservoir and is communicated with the upper part of the filter of the first oil cavity 28, the oil outlet of the oil reservoir is not too large, the flow capacity of the oil reservoir plus the oil amount splashed into the first oil cavity is larger than the oil output of the second and third oil cavities; at least one first oil cavity is arranged above the input shaft in the shell, the first oil cavity is formed by enclosing a first oil baffle plate 34 and the shell, the upper part of the first oil baffle plate keeps a certain distance from the shell to form an oil inlet, the upper part of the first oil baffle plate is lower, the lubricating oil splashed at a low position conveniently enters the first oil cavity, the periphery of the rest part is fixedly connected with the shell, the connection part is sealed, and an oil outlet of the first oil cavity is arranged at the bottom of the first oil cavity and communicated with the second oil cavity; the lower part of the shell is provided with at least one seventh oil hole 29, the oil outlet of the seventh oil hole is higher than the bottom shell, so that sediment at the bottom is prevented from being stirred during oil outlet, the shell at the position of the oil reservoir close to the oil inlet is provided with at least one sixth oil hole 30, and the sixth oil hole is communicated with the seventh oil hole at the bottom through an oil pipe or an oil channel processed on the shell; a filter 31 is arranged in the first oil chamber; the first oil chamber may be formed by processing the housing, or may be enclosed by the first oil baffle plate and the housing, and preferably is enclosed by the first oil baffle plate and the housing.

In the embodiment of the utility model, at least one oil receiving plate 32 is arranged at the upper part in the shell, the specific position, shape and size of the oil receiving plate are determined according to the lubricating oil which is beneficial to receiving more splashes, the oil receiving plate is fixedly connected with the shell or fixedly connected with the mouth of the oil reservoir, the position of one end of the oil receiving plate close to the oil inlet of the oil reservoir is lowest and leads to the inside of the oil reservoir, the lubricating oil stirred up when the transmission driving part or the gear shifting element rotates can flow into the oil reservoir through the oil receiving plate, and more lubricating oil which is beneficial to receiving splashes is provided; a first oil guiding rib 33 is processed at the bottom of the right side surface of the first oil baffle plate, the first oil guiding rib inclines towards the first bearing from top to bottom, and splashed lubricating oil can flow to the first bearing along the first oil guiding rib for lubricating the first bearing; at least one second oil guiding rib 35 is arranged on the shell on the right side of the transmission body, extends into the inner ring of the oil groove from the upper right to the lower left and does not interfere with the support of the planet carrier and the second oil baffle plate, and a fifteenth oil hole 53 extending to the fifth bearing is formed in the lower section of the second oil guiding rib so that lubricating oil can flow to the fifth bearing; the clutch and the brake are positioned at the periphery of the outer side of the planet row in the shell, and oil grooves of friction elements of the clutch 36 and the brake 37 are communicated with the planet row through a fifth oil hole 38; the clutch consists of a clutch drum, a clutch hub, a first friction plate and a first steel sheet; the brake consists of a second friction plate and a second steel sheet, the second friction plate is in sliding connection with one member of the planet row through an inner spline, and the second steel sheet is in sliding connection with the shell through an outer spline; the clutch drum, the clutch hub, the first friction plate and the first steel sheet are respectively connected with the relevant members of the planet row in a sliding mode or a fixed mode according to the design intention of the transmission; at least one sixteenth oil hole 54 is formed in the clutch drum 56, and lubricating oil entering a clutch friction pair is thrown out of the sixteenth oil hole and returns to an oil cavity in the shell; the splines have spline clearance oil grooves 55, from which the portion of the lubricating oil entering the brake flows back into the housing oil chamber.

Example 2:

as shown in fig. 2 and 4, another planetary transmission lubrication system includes a casing of a transmission body, a lubrication passage communicated with an oil reservoir is provided in the casing, the lubrication passage is respectively communicated with a to-be-lubricated element around a sun gear, a to-be-lubricated element around a planet gear shaft, an input shaft and an element to be lubricated around an outer end of an output shaft in the casing; the lubricating passage does not pass through an internal oil passage of the input shaft; an oil outlet of the oil reservoir is communicated with a first oil chamber, the first oil chamber is surrounded by the shell and a first right oil baffle plate, and the first oil chamber is communicated with the peripheral elements to be lubricated of the sun gear and other related components of the planet row through an eleventh oil hole 39 on the first oil baffle plate and a twelfth oil hole 40 on the left end surface of the planet row; the input shaft is in rolling connection with the shell through a first bearing, and an oil seal is arranged on the left side of the first bearing to prevent lubricating oil from flowing out of the shell from the left side; one end of the input shaft in the shell is sleeved in the middle of one end of the output shaft in the shell and is connected with the output shaft through a second bearing; the output shaft is in rolling connection with the shell through a fifth bearing, and an oil seal is arranged on the right side of the fifth bearing to prevent lubricating oil from flowing out of the shell from the right side; at least one thirteenth oil hole 41 is formed in the output shaft, the drift diameter of the thirteenth oil hole is large enough, lubricating oil entering the thirteenth oil hole cannot be thrown out completely due to centrifugal force, and partial lubricating oil can flow into a second bearing between the input shaft and the output shaft from the thirteenth oil hole; the planet row of the speed changer body consists of a sun gear, a planet carrier and a gear ring; the planet carrier consists of a bracket, a planet wheel shaft, a third bearing, a fourth bearing and a second oil baffle plate; the second oil baffle is arranged on the right side surface of the planet carrier, the outer periphery of the second oil baffle is fixedly connected and sealed with the support, the inner periphery of the second oil baffle is outwards unfolded, lubricating oil can be collected conveniently, and an oil groove is defined by the second oil baffle and the support; the two ends of the planet wheel shaft are fixedly connected with the bracket, a second oil duct is arranged in the middle of the planet wheel shaft, one end of the second oil duct is closed, the other end of the second oil duct is opened and communicated with the oil groove, an eighth oil hole, a ninth oil hole and a tenth oil hole are radially arranged on the planet wheel shaft, one end of the eighth oil hole faces to a left fourth bearing, one end of the ninth oil hole faces to a middle third bearing, one end of the tenth oil hole faces to a right fourth bearing, and the other ends of the three oil holes are communicated with the second oil duct; the sum of the diameters of the eighth oil hole, the ninth oil hole and the tenth oil hole is not more than that of the second oil duct so as to ensure that enough lubricating oil passes through each oil hole, the planet wheel is in rolling connection with the planet wheel shaft through a third bearing, and two ends of the planet wheel are in relative rotation connection with the support through fourth bearings respectively; the input shaft, the output shaft, the sun gear, the planet carrier, the gear ring and other relative rotating parts are connected through a second bearing; a right shell first oil cavity 52 is arranged above the output shaft in the shell and close to the oil groove, the right shell first oil cavity is communicated with a thirteenth oil hole, the oil groove and a fifth bearing through a fourteenth oil hole 42 respectively, and the fourteenth oil hole inclines from top right to bottom left so as to improve the impulsive force of lubricating oil entering the thirteenth oil hole and ensure that certain lubrication can reach a second bearing between the input shaft and the output shaft; the oil storage device is arranged in the shell or outside the shell, an oil inlet of the oil storage device faces upwards and is communicated with an inner cavity of the transmission body, an oil outlet of the oil storage device is arranged at the bottom of the oil storage device and is communicated with the upper part of the filter of the first oil cavity, the upper part of the filter comprising the first oil cavity of the right shell is communicated, the oil outlet of the oil storage device is not too large, and the flow capacity and the amount of oil splashed into the first oil cavity are larger than the sum of the oil output of the eleventh oil hole, the fourteenth oil hole and the fifteenth oil hole; at least one first oil cavity and at least one right shell first oil cavity are arranged above the input shaft in the shell, the first oil cavity is enclosed by a first oil baffle plate and the shell, a certain distance is kept between the upper part of the first oil baffle plate and the shell to form an oil inlet, the upper part of the first oil baffle plate is lower, the lubricating oil splashed at a low position conveniently enters the first oil cavity, the periphery of the rest part is fixedly connected with the shell, and the connection part is sealed; the lower part of the shell is provided with at least one seventh oil hole, the oil outlet of the seventh oil hole is higher than the bottom shell, so that bottom sediments are prevented from being stirred during oil outlet, the shell at the position of the oil reservoir close to the oil inlet is provided with at least one sixth oil hole, and the sixth oil hole is communicated with the seventh oil hole at the bottom through an oil pipe or an oil channel processed on the shell; a filter is arranged in the first oil cavity; the upper part in the shell is provided with at least one oil receiving plate, the oil receiving plate is fixedly connected with the shell or fixedly connected with the opening part of the oil reservoir, one end, close to an oil inlet of the oil reservoir, of the oil receiving plate is the lowest and leads to the inside of the oil reservoir, and lubricating oil stirred up when a transmission driving part or a gear shifting element rotates can flow into the inside of the oil reservoir through the oil receiving plate, so that more lubricating oil which splashes can be received; at least one first oil guiding rib is machined at the right side surface and the bottom of the right side of the first oil baffle plate, and the first oil guiding rib inclines towards the first bearing from top to bottom so as to increase the lubricating oil supply quantity of the first bearing; the shell on the right side of the transmission body is provided with at least one second oil guide rib, the second oil guide rib is positioned below the first oil cavity of the right shell, the fourteenth oil hole is positioned in the second oil guide rib and communicated with the first oil cavity of the right shell, the second oil guide rib extends into the inner ring of the oil groove from the upper right to the left and does not interfere with the bracket of the planet carrier and the second oil baffle, the lower section of the second oil guide rib is internally provided with a fifteenth oil hole extending to a fifth bearing, and the fifteenth oil hole is communicated with the fourteenth oil hole so that lubricating oil can flow to the fifth bearing; the clutch and the brake are positioned on the periphery of the outer side of the planetary row in the shell, and oil grooves of friction elements of the clutch and the brake are communicated with the planetary row through a fifth oil hole; the clutch consists of a clutch drum, a clutch hub, a first friction plate and a first steel sheet; the brake consists of a second friction plate and a second steel sheet, the second friction plate is in sliding connection with one member of the planet row through an inner spline, and the second steel sheet is in sliding connection with the shell through an outer spline; the clutch drum, the clutch hub, the first friction plate and the first steel sheet are respectively connected with the relevant members of the planet row in a sliding mode or a fixed mode according to the design intention of the transmission; at least one sixteenth oil hole is formed in the clutch drum 56, and lubricating oil entering a friction pair of the clutch is thrown out of the sixteenth oil hole and returns to an oil cavity in the shell; the spline is provided with a spline clearance oil groove, and the lubricating oil part entering the brake flows back to the oil cavity in the shell from the spline clearance oil groove.

Example 3: example 3 differs from examples 1 and 2 in that the oil reservoir is placed below, and because space restriction or splashed lubricating oil cannot sufficiently enter the upper oil reservoir, an oil level adjuster may be provided at the lower part, the oil level adjuster being composed of: an oil hole 43, a third oil chamber 44, a piston 45, a seal ring 46, an air chamber 47, and an air inlet 48; the air inlet is communicated with the air cavity, the piston with the sealing ring separates the air cavity and the third oil cavity, the piston is connected with the shell through a spring 49, and the third oil cavity is arranged between the piston and the shell and is provided with an oil hole to be communicated with the interior of the shell. The air cavity can be used for air inlet pressurization to push the piston to pump oil.

Example 4: embodiment 4 is different from embodiment 2 in that the lubricating passage does not pass through the input shaft and the internal oil passage of the planetary gear shaft, and a second oil baffle is not provided, and the third bearing may be a full needle roller without a retainer or a needle roller bearing with a retainer, but the width of the retainer is small, so that lubricating oil can conveniently pass through; the two ends of the planet wheel are respectively and rotatably connected with the support through the fourth bearings, and a certain space is reserved between the planet wheel and the two ends of the support after the two fourth bearings are installed, so that lubricating oil can enter the fourth bearings from the gaps between the fourth bearings and the planet wheel or the support under the action of pressure after the planet carrier rotates to enter an oil level, and further enter the third bearings for lubricating.

Embodiment 1 a method of operating a planetary transmission lubrication system, comprising the steps of:

s1: when the clutch is combined with the brake to release braking, all the gear shifting executing elements and the transmission elements except the second steel sheet are in a rotating state, the number of oil stirring elements is large, the oil stirring radius is large, the amount of splashed lubricating oil is large, a large amount of lubricating oil enters the oil storage device and enters the first oil cavity through the filter, the oil level in the cavity of the transmission is greatly reduced, and the energy loss of the oil stirring is small;

s11: lubricating oil in the oil reservoir sequentially passes through the filter, the first oil chamber, the second oil chamber and the first oil hole from an oil outlet of the oil reservoir to enter the first oil channel, and is thrown to corresponding to a to-be-lubricated element and an oil groove from the second oil hole and the third oil hole under the action of gravity and centrifugal force, and the lubricating oil thrown from the second oil hole is partially thrown to a friction pair of a clutch and a brake from the fifth oil hole under the action of the centrifugal force of the to-be-lubricated element; lubricating oil entering the oil groove from the third oil hole enters the second oil channel under the action of centrifugal force, and is thrown to the fourth bearing on the left side, the third bearing in the middle and the fourth bearing on the right side from the eighth oil hole, the ninth oil hole and the tenth oil hole respectively, and part of the lubricating oil thrown to the fourth bearing is thrown to the clutch and the brake friction pair from the fifth oil hole; at the moment, although most related components do not rotate relatively, once the gears are shifted and rotate relatively, sufficient lubrication can be guaranteed in real time;

s12: at the moment, the planet wheel partially or completely passes through lubricating oil at the lower part in the shell in the rotating process, so that the gears are ensured to be kept in a lubricating state at any time; stirring oil of the planet carrier, wherein part of lubricating oil enters a friction pair of the clutch and the brake from the fifth oil hole, so that real-time lubrication and heat dissipation of the friction pair are ensured; the splashed lubricating oil is thrown to the first oil baffle plate and the right shell and then flows to the first bearing and the fifth bearing along the first oil guide rib, the second oil guide rib and the fifteenth oil hole respectively;

s13: when the oil level of the oil reservoir reaches the sixth oil hole, the oil overflows from the sixth oil hole and flows to the oil cavity at the bottom of the transmission from the seventh oil hole along the corresponding oil pipe or oil passage under the action of gravity, so that the circulation of lubricating oil is ensured, and the heat dissipation area is enlarged;

s2: when the brake and the clutch are separated, the brake, the planet row brake elements and the connecting pieces thereof, and the related members of the clutch stop not rotating, the input shaft, other members of the clutch, the planet row non-brake elements and the connecting pieces thereof, and the output shaft rotate, the number of oil stirring members is small, the diameter of the members is not large, the amount of oil which can enter the oil reservoir from the oil storage port is small, the oil level in the cavity of the transmission is at a higher position, the small-diameter rotating member can stir the oil, and the first oil cavity with the lower position of the oil inlet can collect more lubricating oil;

s21: the flow path of the lubricating oil into the oil reservoir and the first oil chamber is as described previously at S11;

s22: at the moment, the planet wheel has rotation and revolution states at the same time, the part or the whole of the planet wheel is adhered with lubricating oil when passing through the lubricating oil at the lower part in the shell in the rotation process, and the part or the whole of the planet wheel is adhered under the action of centrifugal force and in the meshing process, so that the internal gear and the sun gear of the gear ring are also adhered with the lubricating oil, and the gears are ensured to be kept in a lubricating; lubricating oil stirred by the planet carrier has part entering a friction pair of the clutch and the brake from the fifth oil hole under the action of centrifugal force, and real-time lubrication and heat dissipation of the friction pair are ensured; the splashed lubricating oil is thrown to the first oil baffle plate and the right shell and then flows to the first bearing and the fifth bearing along the first oil guide rib, the second oil guide rib and the fifteenth oil hole respectively;

s23: when the oil level of the oil reservoir reaches the sixth oil hole, the oil overflows from the sixth oil hole and flows to the oil cavity at the bottom of the transmission from the seventh oil hole along the corresponding oil pipe or oil passage under the action of gravity, so that the circulation of lubricating oil is ensured, and the heat dissipation area is enlarged.

Embodiment 2 a method of operating a planetary transmission lubrication system, comprising the steps of:

s1: when the clutch is combined with the brake to release braking, all the gear shifting executing elements and the transmission elements except the second steel sheet are in a rotating state, the number of oil stirring elements is large, the oil stirring radius is large, the amount of splashed lubricating oil is large, a large amount of lubricating oil enters the oil storage device and enters the first oil cavity through the filter, the oil level in the cavity of the transmission is greatly reduced, and the energy loss of the oil stirring is small;

s11: lubricating oil in the oil reservoir sequentially passes through a filter, a first oil chamber, an eleventh oil hole and a twelfth oil hole from an oil outlet of the oil reservoir and enters elements to be lubricated on the periphery of the sun wheel, and then enters a second bearing between the oil groove and the input shaft and the output shaft through a first oil chamber, a fourteenth oil hole and a thirteenth oil hole of the right shell, the lubricating oil is thrown to the corresponding elements to be lubricated and the oil groove under the action of gravity and centrifugal force, and the lubricating oil thrown from the twelfth oil hole is partially thrown to a friction pair of a clutch and a brake from a fifth oil hole under the action of the centrifugal force center of the elements to be lubricated; the lubricating oil entering the oil groove enters the second oil channel under the action of centrifugal force, and is thrown to a left fourth bearing, a middle third bearing and a right fourth bearing from an eighth oil hole, a ninth oil hole and a tenth oil hole respectively, and part of the lubricating oil is thrown to a clutch and a brake friction pair from a fifth oil hole; at the moment, although most related components do not rotate relatively, once the gears are shifted and rotate relatively, sufficient lubrication can be guaranteed in real time;

s12: at the moment, the planet wheel partially or completely passes through lubricating oil at the lower part in the shell in the rotating process, so that the gears are ensured to be kept in a lubricating state at any time; lubricating oil stirred by the planet carrier has part entering a friction pair of the clutch and the brake from the fifth oil hole under the action of centrifugal force, so that real-time lubrication and heat dissipation of the friction pair are ensured; the splashed lubricating oil is thrown to the first oil baffle plate, the right shell and a first oil cavity of the right shell, and then flows to the first bearing and the fifth bearing along the first oil guide rib, the second oil guide rib, the fourteenth oil hole and the fifteenth oil hole respectively;

s13: when the oil level of the oil reservoir reaches the sixth oil hole, the oil overflows from the sixth oil hole and flows to the oil cavity at the bottom of the transmission from the seventh oil hole along the corresponding oil pipe or oil passage under the action of gravity, so that the circulation of lubricating oil is ensured, and the heat dissipation area is enlarged;

s2: when the brake and the clutch are separated, the brake, the planet row brake elements and the connecting pieces thereof, and the related members of the clutch stop not rotating, the input shaft, other members of the clutch, the planet row non-brake elements and the connecting pieces thereof, and the output shaft rotate, the number of oil stirring members is small, the diameter of the members is not large, the amount of oil which can enter the oil reservoir from the oil storage port is small, the oil level in the cavity of the transmission is at a higher position, the small-diameter rotating member can stir the oil, and the first oil cavity with the lower position of the oil inlet can collect more lubricating oil;

s21: the flow path of the lubricating oil into the oil reservoir and the first oil chamber is as described previously at S11;

s22: at the moment, the planet wheel has rotation and revolution states at the same time, the part or the whole of the planet wheel is adhered with lubricating oil when passing through the lubricating oil at the lower part in the shell in the rotation process, and the part or the whole of the planet wheel is adhered under the action of centrifugal force and in the meshing process, so that the internal gear and the sun gear of the gear ring are also adhered with the lubricating oil, and the gears are ensured to be kept in a lubricating; stirring oil of the planet carrier, wherein part of lubricating oil enters a friction pair of the clutch and the brake from the fifth oil hole, so that real-time lubrication and heat dissipation of the friction pair are ensured; the splashed lubricating oil is thrown to the first oil baffle plate, the right shell and a first oil cavity of the right shell, and then flows to the first bearing and the fifth bearing along the first oil guide rib, the second oil guide rib, the fourteenth oil hole and the fifteenth oil hole respectively;

s23: when the oil level of the oil reservoir reaches the sixth oil hole, the oil overflows from the sixth oil hole and flows to the oil cavity at the bottom of the transmission from the seventh oil hole along the corresponding oil pipe or oil passage under the action of gravity, so that the circulation of lubricating oil is ensured, and the heat dissipation area is enlarged.

The lubricating oil can be circulated in multiple points, so that the circulation of the lubricating oil is more sufficient, and the oil change time can be better prolonged; the lubricating oil is more fully contacted with the shell, and the flowing process is contacted with the shell, so that the heat dissipation is more facilitated; the oil storage device, the oil cavity, the oil duct and the oil outlet can be flexibly arranged at multiple points, and the lubricating, heat dissipation and circulation can be more ideal without obviously increasing the cost and the volume.

The present invention is not limited to the above-described preferred embodiments, and any other planetary transmission lubrication system of various forms can be obtained by the teaching of the present invention. All the equivalent changes and modifications made according to the claims of the present invention shall fall within the scope of the present invention.

Claims (10)

1. A planetary transmission lubrication system comprising a housing of a transmission body, characterized in that: and a lubricating passage communicated with the oil reservoir is arranged in the shell, and the lubricating passage is respectively communicated with a to-be-lubricated element on the periphery of the sun wheel of the transmission body, a to-be-lubricated element on the periphery of the planet wheel shaft, an element to be lubricated on the periphery of the input shaft and an element to be lubricated on the periphery of the outer end of the output shaft in the shell.

2. A planetary transmission lubrication system as in claim 1 wherein: the lubrication passage passes through the input shaft internal oil passage.

3. A planetary transmission lubrication system as in claim 2 wherein: the middle part in the input shaft is provided with a first oil duct, the left end or two ends of the first oil duct are closed, the left end of the first oil duct is provided with at least one first oil hole, one end of the first oil hole is communicated with the first oil duct, the other end of the first oil hole is communicated with a second oil cavity, the second oil cavity is communicated with the first oil cavity, the first oil cavity is communicated with an oil reservoir, the right side of the first oil hole is provided with at least one second oil hole, one end of the second oil hole is communicated with the first oil duct, the other end of the second oil hole faces to a component to be lubricated on the periphery of the sun wheel, the right side of the first oil hole is also provided with at least one third oil hole, one end of the third oil hole is communicated with the first oil duct, the other end of the third oil hole faces to.

4. A planetary transmission lubrication system as in claim 3 wherein: the input shaft is in rolling connection with the shell through a first bearing, an oil seal is arranged on the left side of the first bearing to prevent lubricating oil from flowing out of the shell from the left side, and a bearing cover is arranged on the right side of the first bearing to form axial sealing between the oil seal and the bearing cover of the first bearing and form a second oil cavity with the shell and the input shaft in a surrounding mode; one end of the input shaft in the shell is sleeved in the middle of one end of the output shaft in the shell and is connected with the output shaft through a second bearing; the output shaft is in rolling connection with the shell through a fifth bearing, and an oil seal is arranged on the right side of the fifth bearing to prevent lubricating oil from flowing out of the shell from the right side; at least one fourth oil hole is arranged on the same vertical loading surface of the output shaft and the third oil hole, and lubricating oil is thrown into an oil groove of the planet carrier from the third oil hole through the fourth oil hole; the planet row of the speed changer body consists of a sun gear, a planet carrier and a gear ring; the planet carrier consists of a bracket, a planet wheel shaft, a third bearing, a fourth bearing and a second oil baffle plate; the second oil baffle is arranged on the right side face of the planet carrier, the periphery of the outer side of the second oil baffle is fixedly connected with the support and sealed, the periphery of the inner side of the second oil baffle is outwards unfolded, lubricating oil can be collected conveniently, and the second oil baffle and the support enclose into an oil groove.

5. The planetary transmission lubrication system as in claim 4, wherein: the two ends of the planet wheel shaft are fixedly connected with the bracket, a second oil duct is arranged in the middle of the planet wheel shaft, one end of the second oil duct is closed, the other end of the second oil duct is opened and communicated with the oil groove, an eighth oil hole, a ninth oil hole and a tenth oil hole are radially arranged on the planet wheel shaft, one end of the eighth oil hole faces to a left fourth bearing, one end of the ninth oil hole faces to a middle third bearing, one end of the tenth oil hole faces to a right fourth bearing, and the other ends of the three oil holes are communicated with the second oil duct; the sum of the diameters of the eighth oil hole, the ninth oil hole and the tenth oil hole is not more than that of the second oil duct so as to ensure that enough lubricating oil passes through each oil hole, the planet wheel is in rolling connection with the planet wheel shaft through a third bearing, and two ends of the planet wheel are in relative rotation connection with the support through fourth bearings respectively; the input shaft, the output shaft, the sun gear, the planet carrier, the gear ring and other relative rotating parts are connected through a second bearing.

6. A planetary transmission lubrication system as claimed in any one of claims 1 to 5, wherein: the upper part of the shell of the speed changer body is provided with at least one oil reservoir, the oil reservoir is arranged in the shell or outside the shell, an oil inlet of the oil reservoir faces upwards and is communicated with the inner cavity of the speed changer body, an oil outlet of the oil reservoir is arranged at the bottom of the oil reservoir and is communicated with the upper part of the filter of the first oil cavity, the oil outlet of the oil reservoir is not too large, and the flow capacity and the amount of oil splashed into the first oil cavity are larger than the oil output amount of the second oil hole and the third oil hole; at least one first oil cavity is arranged above the input shaft in the shell, the first oil cavity is formed by a first oil baffle plate and the shell in a surrounding mode, the upper portion of the first oil baffle plate keeps a certain distance from the shell to form an oil inlet, the upper portion of the first oil baffle plate is low, lubricating oil splashed at a low position conveniently enters the first oil cavity, the periphery of the rest portion is fixedly connected with the shell, the connection position is sealed, and an oil outlet of the first oil cavity is arranged at the bottom of the first oil cavity and communicated with the second oil cavity; the lower part of the shell is provided with at least one seventh oil hole, the oil outlet of the seventh oil hole is higher than the bottom shell, so that bottom sediments are prevented from being stirred during oil outlet, the shell at the position of the oil reservoir close to the oil inlet is provided with at least one sixth oil hole, and the sixth oil hole is communicated with the seventh oil hole at the bottom through an oil pipe or an oil channel processed on the shell; a filter is arranged in the first oil chamber.

7. A planetary transmission lubrication system as claimed in any one of claims 1 to 5, wherein: the upper part in the shell is provided with at least one oil receiving plate, the oil receiving plate is fixedly connected with the shell or fixedly connected with the opening part of the oil reservoir, one end, close to an oil inlet of the oil reservoir, of the oil receiving plate is the lowest and leads to the inside of the oil reservoir, and lubricating oil stirred up when a transmission driving part or a gear shifting element rotates can flow into the inside of the oil reservoir through the oil receiving plate, so that more lubricating oil which splashes can be received; the bottom of the right side surface of the first oil baffle plate is provided with a first oil guide rib, the first oil guide rib inclines towards the first bearing from top to bottom, and splashed lubricating oil can flow to the first bearing along the first oil guide rib for lubricating the first bearing; at least one second oil guide rib is arranged on the shell on the right side of the transmission body, extends into the inner ring of the oil groove from the upper right to the lower left and does not interfere with the support of the planet carrier and the second oil baffle plate, and a fifteenth oil hole extending to the fifth bearing is formed in the lower section of the second oil guide rib so that lubricating oil can flow to the fifth bearing; the clutch and the brake are positioned on the periphery of the outer side of the planetary row in the shell, and oil grooves of friction elements of the clutch and the brake are communicated with the planetary row through a fifth oil hole; the clutch consists of a clutch drum, a clutch hub, a first friction plate and a first steel sheet; the brake consists of a second friction plate and a second steel sheet, the second friction plate is in sliding connection with one member of the planet row through an inner spline, and the second steel sheet is in sliding connection with the shell through an outer spline; the clutch drum, the clutch hub, the first friction plate and the first steel plate are respectively connected with the relevant members of the planet row in a sliding mode or a fixed mode according to the design intention of the transmission.

8. A planetary transmission lubrication system comprising a housing of a transmission body, characterized in that: a lubricating passage communicated with the oil reservoir is arranged in the shell, and the lubricating passage is respectively communicated with a to-be-lubricated element on the periphery of the sun wheel of the transmission body, a to-be-lubricated element on the periphery of the planet wheel shaft, an input shaft and a to-be-lubricated element on the periphery of the outer end of the output shaft in the shell; the lubrication passage does not pass through the input shaft internal oil passage.

9. The planetary transmission lubrication system as in claim 8, wherein: an oil outlet of the oil reservoir is communicated with a first oil chamber, the first oil chamber is surrounded by the shell and a first oil baffle plate on the right side, and the first oil chamber is communicated with the sun gear and other elements to be lubricated on the periphery of other related components of the planet row through an eleventh oil hole on the first oil baffle plate and a twelfth oil hole on the left end surface of the planet row; the input shaft is in rolling connection with the shell through a first bearing, and an oil seal is arranged on the left side of the first bearing to prevent lubricating oil from flowing out of the shell from the left side; one end of the input shaft in the shell is sleeved in the middle of one end of the output shaft in the shell and is connected with the output shaft through a second bearing; the output shaft is in rolling connection with the shell through a fifth bearing, and an oil seal is arranged on the right side of the fifth bearing to prevent lubricating oil from flowing out of the shell from the right side; the output shaft is provided with at least one thirteenth oil hole, the drift diameter of the thirteenth oil hole is large enough, lubricating oil entering the thirteenth oil hole cannot be thrown out completely due to centrifugal force, and partial lubricating oil can flow into a second bearing between the input shaft and the output shaft from the thirteenth oil hole; the planet row of the speed changer body consists of a sun gear, a planet carrier and a gear ring; the planet carrier consists of a bracket, a planet wheel shaft, a third bearing, a fourth bearing and a second oil baffle plate; the second oil baffle is arranged on the right side surface of the planet carrier, the outer periphery of the second oil baffle is fixedly connected and sealed with the support, the inner periphery of the second oil baffle is outwards unfolded, lubricating oil can be collected conveniently, and an oil groove is defined by the second oil baffle and the support; the two ends of the planet wheel shaft are fixedly connected with the bracket, a second oil duct is arranged in the middle of the planet wheel shaft, one end of the second oil duct is closed, the other end of the second oil duct is opened and communicated with the oil groove, an eighth oil hole, a ninth oil hole and a tenth oil hole are radially arranged on the planet wheel shaft, one end of the eighth oil hole faces to a left fourth bearing, one end of the ninth oil hole faces to a middle third bearing, one end of the tenth oil hole faces to a right fourth bearing, and the other ends of the three oil holes are communicated with the second oil duct; the sum of the diameters of the eighth oil hole, the ninth oil hole and the tenth oil hole is not more than that of the second oil duct so as to ensure that enough lubricating oil passes through each oil hole, the planet wheel is in rolling connection with the planet wheel shaft through a third bearing, and two ends of the planet wheel are in relative rotation connection with the support through fourth bearings respectively; the input shaft, the output shaft, the sun gear, the planet carrier, the gear ring and other relative rotating parts are connected through a second bearing.

10. A planetary transmission lubrication system as in claim 9 wherein: a first oil chamber of the right shell is arranged above the output shaft in the shell and close to the oil groove, the first oil chamber of the right shell is communicated with a thirteenth oil hole, the oil groove and a fifth bearing through a fourteenth oil hole respectively, and the fourteenth oil hole inclines from top right to bottom left so as to improve the impulsive force of lubricating oil entering the thirteenth oil hole and ensure that certain lubrication can reach a second bearing between the input shaft and the output shaft; the oil storage device is arranged in the shell or outside the shell, an oil inlet of the oil storage device faces upwards and is communicated with an inner cavity of the transmission body, an oil outlet of the oil storage device is arranged at the bottom of the oil storage device and is communicated with the upper part of the filter of the first oil cavity, the upper part of the filter comprising the first oil cavity of the right shell is communicated, the oil outlet of the oil storage device is not too large, and the flow capacity and the amount of oil splashed into the first oil cavity are larger than the sum of the oil output of the eleventh oil hole, the fourteenth oil hole and the fifteenth oil hole; at least one first oil cavity and at least one right shell first oil cavity are arranged above the input shaft in the shell, the first oil cavity is enclosed by a first oil baffle plate and the shell, a certain distance is kept between the upper part of the first oil baffle plate and the shell to form an oil inlet, the upper part of the first oil baffle plate is low, lubricating oil splashed at a low position conveniently enters the first oil cavity, the periphery of the rest part is fixedly connected with the shell, and the connection part is sealed; the lower part of the shell is provided with at least one seventh oil hole, the oil outlet of the seventh oil hole is higher than the bottom shell, so that bottom sediments are prevented from being stirred during oil outlet, the shell at the position of the oil reservoir close to the oil inlet is provided with at least one sixth oil hole, and the sixth oil hole is communicated with the seventh oil hole at the bottom through an oil pipe or an oil channel processed on the shell; a filter is arranged in the first oil cavity; the upper part in the shell is provided with at least one oil receiving plate, the oil receiving plate is fixedly connected with the shell or fixedly connected with the opening part of the oil reservoir, one end, close to an oil inlet of the oil reservoir, of the oil receiving plate is the lowest and leads to the inside of the oil reservoir, and lubricating oil stirred up when a transmission driving part or a gear shifting element rotates can flow into the inside of the oil reservoir through the oil receiving plate, so that more lubricating oil which splashes can be received; at least one first oil guiding rib is machined at the right side surface and the bottom of the right side of the first oil baffle plate, and the first oil guiding rib inclines towards the first bearing from top to bottom so as to increase the lubricating oil supply quantity of the first bearing; the shell on the right side of the transmission body is provided with at least one second oil guide rib, the second oil guide rib is positioned below the first oil cavity of the right shell, the fourteenth oil hole is positioned in the second oil guide rib and communicated with the first oil cavity of the right shell, the second oil guide rib extends into the inner ring of the oil groove from the upper right to the left and does not interfere with the bracket of the planet carrier and the second oil baffle, the lower section of the second oil guide rib is internally provided with a fifteenth oil hole extending to a fifth bearing, and the fifteenth oil hole is communicated with the fourteenth oil hole so that lubricating oil can flow to the fifth bearing; the clutch and the brake are positioned on the periphery of the outer side of the planetary row in the shell, and oil grooves of friction elements of the clutch and the brake are communicated with the planetary row through a fifth oil hole; the clutch consists of a clutch drum, a clutch hub, a first friction plate and a first steel sheet; the brake consists of a second friction plate and a second steel sheet, the second friction plate is in sliding connection with one member of the planet row through an inner spline, and the second steel sheet is in sliding connection with the shell through an outer spline; the clutch drum, the clutch hub, the first friction plate and the first steel plate are respectively connected with the relevant members of the planet row in a sliding mode or a fixed mode according to the design intention of the transmission.

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