Double-layer planet carrier with active lubrication function

Abstract

A double-layer planet carrier with an active lubrication function comprises a lubrication oil storage box, a double-layer planet carrier body and a plurality of sealing rubber pads. The lubricating oil storage box comprises a mounting plate, an oil storage base box and a connecting plate, the oil storage base box comprises a forward oil storage cavity and a reverse oil storage cavity, and the inner wall of the forward oil storage cavity and the inner wall of the reverse oil storage cavity are provided with a first through oil passing hole and a second through oil passing hole correspondingly; a first cavity and a second cavity are symmetrically distributed in the hollow stand column in the radial direction, and a first through oil hole and a second through oil hole are formed in the outer circumferential surface of the first cavity and the outer circumferential surface of the second cavity respectively. The inner surface of the oil storage base box is tightly attached to the outer surface of the hollow stand column, the first oil passing hole is communicated with the first oil hole, and the second oil passing hole is communicated with the second oil hole. Therefore, when the double-layer planet carrier is in a horizontal low-speed operation working condition, the meshing tooth surface above the liquid level of lubricating oil is in a good lubrication state for a long time.

Description

Technical Field

[0001] The invention relates to a double-layer planetary carrier, belongs to the field of lubrication systems, and in particular to a double-layer planetary carrier with active lubrication. Background Art

[0002] To meet the demand for high load-bearing capacity, heavy-load transmission mechanisms generally adopt a double-layer planetary carrier structure. The double-layer planetary carrier structure can effectively disperse the huge load during the transmission process and improve the operating stability of the equipment due to its high load-bearing characteristics of double-end support. However, existing lubrication solutions mostly rely on splash lubrication or passive oil immersion lubrication. When the equipment is in a horizontal low-speed operation condition, the planetary carrier rotates at a low speed, and the amount of splash oil generated by the rotation of the planetary gear is limited, which cannot cover the meshing tooth surface above the liquid level (especially the meshing area in the second half of the cycle), resulting in insufficient lubrication of the teeth and the internal bearings of the planetary gear. As a result, when the double-layer planetary carrier is in a horizontal low-speed operation condition, the meshing tooth surface above the lubricating oil liquid level is in a poorly lubricated state for a long time.

[0003] The Chinese patent application with application number 202410888662.0 and application date of July 3, 2024 discloses a planetary reducer, comprising: an input shaft; a sun gear, connected to the input shaft via a spline pair to achieve radial floating of the sun gear, with a limit groove provided on the sun gear; a retaining ring, correspondingly clamped in the limit groove, with the width of the limit groove being greater than the thickness of the retaining ring along the axial direction of the input shaft, and the retaining ring being connected to the input shaft via a screw to achieve axial floating of the sun gear; a planetary assembly, comprising a plurality of planetary gears, with the plurality of planetary gears being meshed with the sun gear; and an output shaft, connected to the planetary assembly via a spline. Although the patent achieves basic lubrication through directional nozzle injection, it still has the following defects: This design still has the problem that when the double-layer planetary carrier is in a horizontal low-speed operating condition, the meshing tooth surfaces above the lubricating oil level are in a poorly lubricated state for a long time.

[0004] The information disclosed in this background technology section is only intended to increase the understanding of the overall background of this patent application, and should not be regarded as an admission or any form of suggestion that the information constitutes the prior art already known to a person skilled in the art. Summary of the Invention

[0005] The purpose of the present invention is to overcome the defects and problems in the prior art that the meshing tooth surfaces above the lubricating oil level are in a poorly lubricated state for a long time when the double-layer planetary carrier is in a horizontal low-speed operating condition, and to provide a double-layer planetary carrier with active lubrication, which can ensure that the meshing tooth surfaces above the lubricating oil level are in a well-lubricated state for a long time when the double-layer planetary carrier is in a horizontal low-speed operating condition.

[0006] To achieve the above objectives, the technical solution of the present invention is: a double-layer planetary carrier with active lubrication, the double-layer planetary carrier with active lubrication comprising a lubricating oil storage box, a double-layer planetary carrier, and a plurality of sealing rubber pads; The lubricating oil storage box includes two symmetrically arranged mounting plates, an oil storage base box, and a connecting plate, and the two sides of the oil storage base box are respectively connected to the corresponding mounting plates through the connecting plates; the oil storage base box includes a forward oil storage chamber and a reverse oil storage chamber; one end of the forward oil storage chamber is provided with a forward opening, and the other end of the forward oil storage chamber is a forward closed end, one end of the reverse oil storage chamber is a reverse closed end, and the other end of the reverse oil storage chamber is provided with a reverse opening, the forward opening and the reverse closed end are located on the same end face side of the oil storage base box, and the positive closed end and the reverse opening are located on the other end face side of the oil storage base box; the inner wall of the forward oil storage chamber is provided with two through first oil holes, and the inner wall of the reverse oil storage chamber is provided with two through second oil holes; The double-layer planet carrier includes a coaxially arranged upper plate and lower plate, and a plurality of hollow columns uniformly distributed along the circumference. A first cavity and a second cavity are symmetrically distributed radially within the hollow columns. Two first oil holes are formed on the outer circumferential surface of the first cavity, and two second oil holes are formed on the outer circumferential surface of the second cavity. The inner wall of the oil storage base box fits tightly with the outer surface of the hollow column, the first oil hole is connected with the first oil hole, the second oil hole is connected with the second oil hole, and the sealing rubber pad fits tightly between the upper end surface of the upper plate and the corresponding mounting plate, and between the lower end surface of the lower plate and the corresponding mounting plate.

[0007] The heights of the positive opening and the reverse opening are both half the thickness of the oil storage base box.

[0008] The positive opening is opened at the upper half of the positive oil storage chamber, and the reverse opening is opened at the upper half of the reverse oil storage chamber.

[0009] The curvature of the oil storage base box is consistent with the curvature of the hollow column, and the inner surface contour of the oil storage base box is matched with the outer surface contour of the hollow column.

[0010] The width of the oil storage base box is greater than or equal to the width of the hollow column, and the length of the oil storage base box is greater than or equal to the length of the hollow column.

[0011] The mounting plate is provided with a plurality of oil box mounting holes; The upper end surface of the upper plate and the lower end surface of the lower plate of the double-layer planetary carrier are respectively provided with end surface mounting holes corresponding to the oil box mounting holes; After the bolts pass through the oil box mounting hole, the sealing rubber pad, and the end face mounting hole in sequence, the mounting plate, the sealing rubber pad, and the double-layer planetary carrier are fixedly connected.

[0012] The first cavity and the second cavity in the hollow column are separated by a radial partition plate, and the first cavity is the same as the second cavity.

[0013] The oil storage base box is divided into a forward oil storage chamber and a reverse oil storage chamber along the radial direction, and the forward oil storage chamber and the reverse oil storage chamber have the same volume.

[0014] The first cavity is provided with a first end surface opening on the upper plate, and the second cavity is provided with a second end surface opening on the lower plate; The sealing rubber pad is sealed with the first end surface opening and the second end surface opening respectively.

[0015] A through sun gear mounting hole is provided at corresponding central positions of the upper plate and the lower plate, and a plurality of planet gear mounting holes are distributed at the same circumferential positions of the upper plate and the lower plate; the hollow column is located between adjacent planet gear mounting holes.

[0016] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention provides a double-layer planetary carrier with active lubrication, comprising a lubricating oil storage box, a double-layer planetary carrier, and a plurality of sealing rubber pads. The lubricating oil storage box comprises a symmetrically arranged mounting plate and an oil storage base box. A through first oil hole is provided on the inner wall of the forward oil storage cavity in the oil storage base box, and a through second oil hole is provided on the inner wall of the reverse oil storage cavity in the oil storage base box. The inner surface of the oil storage base box is tightly fitted with the outer surface of the hollow column. The first oil hole is connected to the first oil hole, and the second oil hole is connected to the second oil hole. When used in large During the horizontal low-speed operation of the heavy-duty planetary reducer, when the double-layer planetary carrier rotates clockwise, the positive opening of the oil storage base box is immersed in the lubricating oil level of the lower half of the planetary structure, and the lubricating oil enters the first cavity through the first oil hole of one group of positive oil storage chambers and the first oil hole of the hollow column. At this time, the other group of first oil holes and the first oil hole are responsible for exhausting the air in the first cavity to achieve efficient oil storage. As the planetary carrier rotates to near the top, the oil storage base box is separated from the liquid surface. Under the action of gravity and centrifugal force, the lubricating oil in the first cavity is discharged through the original exhaust channel. (Another set of first oil holes and the first oil hole) flows in the reverse direction into the forward oil storage chamber, and flows out from the positive opening, and flows to the planetary gear meshing surface through the corresponding path. Part of the lubricating oil penetrates the center bearing seat through the radial through hole of the planetary gear. At the same time, the original oil inlet channel (one set of first oil holes and the first oil hole) is converted into an intake channel to balance the pressure in the cavity, ensuring smooth flow of oil. When the planetary carrier rotates counterclockwise, the reverse opening of the oil storage base box is immersed in the liquid surface, and the lubricating oil enters the second cavity through the second oil hole of the reverse oil storage chamber and the second oil hole of the hollow column. The oil storage is stepped. When it rotates to the top, the lubricating oil stored in the second cavity is released from the reverse opening by the same mechanism, directionally lubricating the corresponding area. Through the symmetrical dual-cavity active oil storage design and the dynamic switching of the channel function, the meshing tooth surface and bearing position above the liquid level are continuously lubricated during the forward and reverse low-speed rotation of the planetary carrier, avoiding the blind spot of the reversing lubrication of the traditional single-cavity structure. The meshing tooth surface above the lubricating oil liquid level is kept in a well-lubricated state for a long time, thereby avoiding failure problems such as tooth surface bonding and bearing burns, and ensuring long-term reliable operation of the equipment. Therefore, when the double-layer planetary carrier of the present invention is in a horizontal low-speed operating condition, the meshing tooth surface above the lubricating oil liquid level is kept in a well-lubricated state for a long time.

[0017] 2. In a double-layer planetary carrier with active lubrication according to the present invention, the height of the positive opening and the reverse opening are both half the thickness of the oil storage base box, the positive opening is opened in the upper half of the positive oil storage chamber, and the reverse opening is opened in the upper half of the reverse oil storage chamber; when in use, since the height of the positive opening and the reverse opening are both half the thickness of the oil storage base box and are opened in the upper half of the corresponding oil storage chamber, the box opening closes the lower half of the oil storage chamber. When the double-layer planetary carrier rotates to the lower half of the oil level, the oil storage chamber stores oil through the upper half opening. As it rotates toward the top, the closed lower half effectively slows down the premature leakage of oil caused by centrifugal force or tilt during the 0° to 90° rotation process. After reaching the top, during the 90° to 180° rotation stage, the lubricating oil flows out from the half-height opening in a direction to the planetary gear and bearing position under the action of centrifugal force and gravity, avoiding the problem of insufficient lubrication during this stage and making the operation more stable. Therefore, the present invention can not only lubricate the meshing tooth surfaces above the lubricating oil liquid level, but also achieve a stable lubrication effect.

[0018] 3. In a double-layer planetary carrier with active lubrication of the present invention, a mounting plate is provided with a plurality of oil cartridge mounting holes. The upper end surface of the upper plate and the lower end surface of the lower plate of the double-layer planetary carrier are respectively provided with end surface mounting holes corresponding to the oil cartridge mounting holes. Bolts are sequentially passed through the oil cartridge mounting holes, the sealing rubber gasket, and the end surface mounting holes to securely connect the mounting plate, the sealing rubber gasket, and the double-layer planetary carrier. When in use, the sealing rubber gasket is first placed between the mounting plate and the upper plate and between the mounting plate and the lower plate, respectively. The oil cartridge mounting holes of the mounting plate are then aligned with the end surface mounting holes of the upper plate and the lower plate, respectively. The three are then fastened together with bolts. The sealing rubber pad fills the installation gap by elastic deformation, which can not only isolate external dust intrusion, but also prevent lubricating oil leakage, effectively avoiding the risk of oil hole blockage and bearing scratches due to impurities. At the same time, the oil storage base box is modularly connected to the double-layer planetary carrier through the mounting plate. When disassembling, only the corresponding bolts need to be removed, without disassembling the double-layer planetary carrier and hollow columns, which facilitates the installation and removal of the lubricating oil storage box. When a large and heavy-duty planetary reducer is running at high speed, the lubricating oil storage box can be quickly removed to eliminate its impact on the dynamic balance of the planetary carrier and avoid unstable operation. This design takes into account both sealing reliability and adaptability to multiple working conditions, expanding the scope of application. Therefore, the present invention not only has a stable lubrication effect but also has a wide range of applications. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of the present invention.

[0020] Figure 2 It is a structural schematic diagram of the present invention from another angle.

[0021] Figure 3 It is a structural schematic diagram from the perspective of the upper plate in the present invention.

[0022] Figure 4 It is a structural schematic diagram of the lower plate perspective of the present invention.

[0023] Figure 5 It is a schematic cross-sectional structural diagram of the lubricating oil storage box of the present invention.

[0024] Figure 6 It is a structural schematic diagram of the lubricating oil storage box in the present invention.

[0025] Figure 7 It is a structural schematic diagram of the double-layer planet carrier in the present invention.

[0026] Figure 8 It is a schematic cross-sectional structure diagram of the double-layer planet carrier in the present invention.

[0027] Figure 9 It is a schematic diagram of the assembly structure of the present invention.

[0028] Figure 10 It is a schematic diagram of active lubrication of the present invention.

[0029] In the figure: lubricating oil storage box 1, mounting plate 11, oil box mounting hole 111, oil storage base box 12, forward oil storage chamber 121, positive opening 121a, positive closed end 121b, reverse oil storage chamber 122, reverse opening 122a, reverse closed end 122b, first oil through hole 124, second oil through hole 125, connecting plate 13, double-layer planetary carrier 2, upper plate 21, sun gear mounting hole 212, planet gear mounting hole 213, lower plate 22, end face mounting hole 221, hollow column 23, first cavity 231, second cavity 232, radial partition 233, first oil hole 234, second oil hole 235, first end face opening 237, second end face opening 238, sealing rubber pad 3, end inner ring gear 4, planet gear 5, sun gear 6. DETAILED DESCRIPTION

[0030] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0031] See also Figure 1 — Figure 10 A double-layer planetary carrier with active lubrication, comprising a lubricating oil storage box 1, a double-layer planetary carrier 2, and a plurality of sealing rubber pads 3; The lubricating oil storage box 1 comprises two symmetrically arranged mounting plates 11, an oil storage base box 12, and a connecting plate 13. The two sides of the oil storage base box 12 are connected to the corresponding mounting plates 11 through the connecting plates 13 respectively; the oil storage base box 12 comprises a forward oil storage chamber 121 and a reverse oil storage chamber 122; one end of the forward oil storage chamber 121 is provided with a positive opening 121a, the other end of the forward oil storage chamber 121 is a positive closed end 121b, and one end of the reverse oil storage chamber 122 is The reverse oil storage chamber 122 has a reverse closed end 122b, and the other end of the reverse oil storage chamber 122 has a reverse opening 122a. The positive opening 121a and the reverse closed end 122b are located on the same end surface of the oil storage base box 12, and the positive closed end 121b and the reverse opening 122a are located on the other end surface of the oil storage base box 12. The inner wall of the positive oil storage chamber 121 has two through first oil holes 124, and the inner wall of the reverse oil storage chamber 122 has two through second oil holes 125. The double-layer planet carrier 2 includes a coaxially arranged upper plate 21 and lower plate 22, and a plurality of hollow columns 23 evenly distributed along the circumference. A first cavity 231 and a second cavity 232 are radially symmetrically distributed within the hollow columns 23. Two first oil holes 234 are formed on the outer circumferential surface of the first cavity 231, and two second oil holes 235 are formed on the outer circumferential surface of the second cavity 232. The inner wall of the oil storage base box 12 is tightly fitted with the outer surface of the hollow column 23, the first oil hole 124 is connected with the first oil hole 234, the second oil hole 125 is connected with the second oil hole 235, and the sealing rubber pad 3 is tightly fitted between the upper end surface of the upper plate 21 and the corresponding mounting plate 11, and between the lower end surface of the lower plate 22 and the corresponding mounting plate 11.

[0032] The heights of the front opening 121 a and the back opening 122 a are both half the thickness of the oil storage base box 12 .

[0033] The positive opening 121 a is opened at the upper half of the positive oil storage chamber 121 , and the reverse opening 122 a is opened at the upper half of the reverse oil storage chamber 122 .

[0034] The curvature of the oil storage base box 12 is consistent with the curvature of the hollow column 23 , and the inner surface contour of the oil storage base box 12 is adapted to the outer surface contour of the hollow column 23 .

[0035] The width of the oil storage base box 12 is greater than or equal to the width of the hollow column 23 , and the length of the oil storage base box 12 is greater than or equal to the length of the hollow column 23 .

[0036] The mounting plate 11 is provided with a plurality of oil box mounting holes 111; The upper end surface of the upper plate 21 and the lower end surface of the lower plate 22 of the double-layer planetary carrier 2 are respectively provided with end surface mounting holes 221 corresponding to the oil box mounting holes 111; The bolts pass through the oil box mounting hole 111 , the sealing rubber pad 3 , and the end surface mounting hole 221 in sequence, thereby fixing the mounting plate 11 , the sealing rubber pad 3 , and the double-layer planet carrier 2 together.

[0037] The first cavity 231 and the second cavity 232 in the hollow column 23 are separated by a radial partition 233 , and the first cavity 231 is identical to the second cavity 232 .

[0038] The oil storage base box 12 is divided into a forward oil storage chamber 121 and a reverse oil storage chamber 122 along the radial direction. The forward oil storage chamber 121 and the reverse oil storage chamber 122 have the same volume.

[0039] The first cavity 231 has a first end surface opening 237 formed on the upper plate 21 , and the second cavity 232 has a second end surface opening 238 formed on the lower plate 22 ; The sealing rubber pad 3 seals the first end surface opening 237 and the second end surface opening 238 respectively.

[0040] A through sun gear mounting hole 212 is opened at the corresponding center position of the upper plate 21 and the lower plate 22, and a plurality of planet gear mounting holes 213 are distributed at the same circumferential position of the upper plate 21 and the lower plate 22; the hollow column 23 is located between adjacent planet gear mounting holes 213.

[0041] The supplementary description of the present invention is as follows: The present invention preferably makes the forward oil storage chamber 121 and the reverse oil storage chamber 122 equal in volume because: the equal volume of the two can ensure that the depth of the oil storage chamber immersed in the liquid surface is consistent when the planetary carrier rotates forward and reverse, and the oil storage amount is the same, thereby structurally eliminating the problem of lubrication overload during bidirectional rotation and achieving symmetrical lubrication.

[0042] The present invention preferably ensures that the sun gear mounting holes 212 and the planet gear mounting holes 213 of the upper plate 21 and the lower plate 22 are strictly coaxial to ensure the meshing accuracy of the sun gear and the planet gear, and cooperates with the lubrication system to provide directional oil to the meshing tooth surface, thereby reducing the tooth surface eccentricity caused by installation deviation and further improving the transmission smoothness and lubrication efficiency.

[0043] The present invention preferably provides rubber pad mounting holes on the sealing rubber pad 3 that correspond one-to-one to the oil box mounting hole 111 and the end face mounting hole 221, so that the bolts can pass through the oil box mounting hole 111, the rubber pad mounting hole, and the end face mounting hole 221 in sequence to fix the mounting plate 11, the sealing rubber pad 3, and the double-layer planetary carrier 2 in connection.

[0044] Example 1: See also Figure 1 — Figure 10 A double-layer planetary carrier with active lubrication, the double-layer planetary carrier with active lubrication includes a lubricating oil storage box 1, a double-layer planetary carrier 2, and a plurality of sealing rubber pads 3; the lubricating oil storage box 1 includes two symmetrically arranged mounting plates 11, an oil storage base box 12, and a connecting plate 13, and the two sides of the oil storage base box 12 are respectively connected to the corresponding mounting plates 11 through the connecting plates 13; the oil storage base box 12 includes a forward oil storage chamber 121 and a reverse oil storage chamber 122; the forward oil storage chamber 1 One end of the forward oil storage chamber 121 is provided with a positive opening 121a, the other end of the forward oil storage chamber 121 is a positive closed end 121b, one end of the reverse oil storage chamber 122 is a reverse closed end 122b, and the other end of the reverse oil storage chamber 122 is provided with a reverse opening 122a, the forward opening 121a and the reverse closed end 122b are located on the same end face side of the oil storage base box 12, and the forward closed end 121b and the reverse opening 122a are located on the other end face side of the oil storage base box 12; the forward oil storage chamber 121 is provided with a positive closed end 121b, and the reverse oil storage chamber 122 is provided with a reverse opening 122a. The inner wall of the oil chamber 121 is provided with two through first oil holes 124, and the inner wall of the reverse oil storage chamber 122 is provided with two through second oil holes 125; the double-layer planetary carrier 2 includes a coaxially arranged upper plate 21 and a lower plate 22, and a plurality of hollow columns 23 evenly distributed in the circumferential direction, wherein the hollow columns 23 are radially symmetrically distributed with a first cavity 231 and a second cavity 232, and the outer circumferential surface of the first cavity 231 is provided with two through first oil holes 234, two through second oil holes 235 are provided on the outer circumferential surface of the second cavity 232; the inner wall of the oil storage base box 12 is tightly fitted with the outer surface of the hollow column 23, the first oil hole 124 is connected with the first oil hole 234, the second oil hole 125 is connected with the second oil hole 235, and the sealing rubber pad 3 is tightly fitted between the upper end surface of the upper plate 21 and the corresponding mounting plate 11, and between the lower end surface of the lower plate 22 and the corresponding mounting plate 11.

[0045] During application, during the horizontal low-speed use of the large-scale heavy-load planetary reducer, the lubricating oil is stored in the lower half of the planetary structure. When the double-layer planetary frame 2 rotates clockwise, the positive opening 121a of the oil storage base box 12 enters the lubricating oil liquid level in the lower half of the planetary structure together with the frame body; at this time, the lubricating oil enters the positive oil storage chamber 121 through the positive opening 121a, and then enters the first cavity 231 through one of the first oil holes 124 on the inner wall of the positive oil storage chamber 121 and the corresponding first oil hole 234 on the hollow column 23; at the same time, the other first oil hole 124 on the inner wall of the positive oil storage chamber 121 and the corresponding first oil hole 234 are responsible for discharging the oil in the first cavity 231 Air is released so that the lubricating oil can smoothly enter the first cavity 231 of the hollow column 23, thereby realizing oil storage; as the double-layer planetary carrier 2 continues to rotate, the oil storage base box 12 gradually moves toward the top, and when the oil storage base box 12 is near the top, under the action of gravity and centrifugal force, the lubricating oil in the positive oil storage chamber 121 flows out from the positive opening 121a, and the lubricating oil in the first cavity 231 enters the positive oil storage chamber 121 after passing through the first oil hole 234 of the original exhaust function and the corresponding first oil through hole 124, and then flows out from the positive opening 121a of the positive oil storage chamber 121. At this time, the first oil through hole 124 and the first oil hole 234 for oil inlet are responsible for air intake during oil storage, balancing the pressure in the cavity to To ensure the smooth flow of oil, the discharged lubricating oil flows to the planetary gear 5, and part of the lubricating oil enters the central bearing position through the radial through hole of the planetary gear 5 to achieve lubrication; when the double-layer planetary carrier 2 rotates counterclockwise, the reverse opening 122a of the oil storage base box 12 is immersed in the liquid surface, and the lubricating oil enters the reverse oil storage chamber 122 through this opening, and then enters the second cavity 232 of the hollow column 23 through one of the second oil holes 125 and the corresponding second oil hole 235, and the other second oil hole 125 and the second oil hole 235 are exhausted to achieve oil storage; the oil storage base box 12 rotates to the vicinity of the top, and under the action of gravity and centrifugal force, the lubricating oil in the reverse oil storage chamber 122 flows out from the reverse opening 122a, and the lubricating oil in the second cavity 232 is exhausted. The oil enters the reverse oil storage chamber 122 through the second oil hole 235 and the second oil hole 125 originally used for exhaust, and then flows out from the reverse opening 122a. The air intake of the second oil hole 125 and the second oil hole 235 originally used for oil inflow balances the pressure, and the discharged lubricating oil flows to the planetary gear 5, and part of it enters the center bearing position for lubrication through the radial through hole; by adopting the opposite side reverse arrangement, it is ensured that the double-layer planetary carrier can realize the lubrication of the planetary gear transmission in both forward and reverse rotations, and realizes the continuous lubrication of the meshing tooth surface and the bearing position above the liquid level, avoiding the blind spot of the reversing lubrication of the traditional single-cavity structure, so that the meshing tooth surface above the lubricating oil liquid level is in a well-lubricated state for a long time, thereby avoiding failure problems such as tooth surface bonding and bearing burns, and ensuring long-term reliable operation of the equipment.

[0046] Example 2: The basic content is the same as Example 1, except that: the height of the positive opening 121a and the reverse opening 122a are both half the thickness of the oil storage base box 12; the positive opening 121a is opened in the upper half of the positive oil storage cavity 121, and the reverse opening 122a is opened in the upper half of the reverse oil storage cavity 122.

[0047] When used, since the height of the positive opening 121a and the reverse opening 122a are both half the thickness of the oil storage base box 12 and are opened in the upper half of the corresponding oil storage cavity, and the box opening seals the lower half, when the double-layer planetary carrier 2 rotates to the lower half of the oil surface for oil storage; Figure 10 As shown, as the double-layer planet carrier 2 rotates toward the top (90°), the lower halves of the forward oil storage chamber 121 and the reverse oil storage chamber 122 are closed, which can effectively slow down the premature leakage or excessive loss of oil caused by centrifugal force or tilt during the rotation from 0° to 90°, and the rapid outflow of lubricating oil. After reaching the top, during the rotation from 90° to 180°, under the combined action of centrifugal force and gravity, the lubricating oil flows out from the half-height opening in a direction to the planetary gear 5 and the bearing position, avoiding the operation problems caused by insufficient oil lubrication at this stage, thereby making the operation process more stable.

[0048] Example 3: The basic content is the same as Example 1, except that: the curvature of the oil storage base box 12 is consistent with the curvature of the hollow column 23, the inner surface contour of the oil storage base box 12 is adapted to the outer surface contour of the hollow column 23; the width of the oil storage base box 12 is greater than or equal to the width of the hollow column 23, and the length of the oil storage base box 12 is greater than or equal to the length of the hollow column 23.

[0049] When in use, the oil storage base box 12 and the hollow column 23 have the same curvature and the inner surface contour is precisely adapted, and the width and length both cover the hollow column. After the two are fitted together, a closed transmission space with no gap is formed. When the double-layer planetary frame 2 drives the oil storage base box 12 to immerse into the lubricating oil level in the lower half of the planetary structure, the lubricating oil enters the corresponding forward oil storage cavity 121 or reverse oil storage cavity 122 through the positive opening 121a or the reverse opening 122a, and passes through the first oil hole 124 or the second oil hole 125 on the inner wall of the oil storage base box 12, and accurately docks with the first oil hole 234 or the second oil hole 235 on the outer surface of the hollow column 23, filling the first cavity 231 or the second cavity 232 of the hollow column 23 without hindrance; when the planetary frame rotates, the oil storage base box 12 enters the corresponding forward oil storage cavity 121 or reverse oil storage cavity 122 through the positive opening 121a or the reverse opening 122a, and passes through the first oil hole 124 or the second oil hole 125 on the inner wall of the oil storage base box 12, and accurately docks with the first oil hole 234 or the second oil hole 235 on the outer surface of the hollow column 23, and fills the first cavity 231 or the second cavity 232 of the hollow column 23 without hindrance. During the process, the fully fitted contour and size inclusive design ensure that the oil hole and the oil hole remain coaxially aligned throughout the entire stroke, avoiding oil leakage or hole misalignment due to fitting clearance; when the oil storage base box 12 rotates to the top with the planetary carrier, under the action of centrifugal force and gravity, the lubricating oil flows along the fitting surface of the oil storage base box 12 and the hollow column 23, through the positive opening 121a or the reverse opening 122a to the planetary gear 5 and the center bearing position, thereby improving the sealing and reliability of the heavy-duty planetary reducer lubrication system; in addition, the thickness of the oil storage base box 12 is designed based on the principle of not interfering with the end inner gear ring 4 during operation. While ensuring structural compatibility, efficient and stable lubrication effects are achieved through contour matching and size control.

[0050] Example 4: The basic content is the same as that of Example 1, except that: the mounting plate 11 is provided with a plurality of oil box mounting holes 111; the upper end surface of the upper plate 21 and the lower end surface of the lower plate 22 of the double-layer planetary carrier 2 are respectively provided with end surface mounting holes 221 corresponding to the oil box mounting holes 111; the bolts are passed through the oil box mounting holes 111, the sealing rubber gasket 3, and the end surface mounting holes 221 in sequence, and then the mounting plate 11, the sealing rubber gasket 3, and the double-layer planetary carrier 2 are fixedly connected.

[0051] During use, the mounting plate 11 is aligned with the end surface mounting holes 221 of the upper plate 21 and the lower plate 22 of the double-layer planetary carrier 2 through the oil box mounting hole 111. After being tightened by bolts, the sealing rubber gasket 3 is clamped. Its elastic deformation fills the connection gap, which can not only prevent the lubricating oil from leaking from the mounting interface when the planetary carrier rotates or bears loads, but also isolate external dust, metal chips and other pollutants from entering the oil storage cavity and the first cavity 231 or the second cavity 232 of the hollow column 23, avoiding clogging of the oil hole or scratching of the bearing, thereby extending the maintenance cycle and service life of the equipment. The oil storage base box 12 forms a modular connection with the double-layer planetary carrier 2 through the mounting plate 11. When disassembling, you only need to remove the corresponding bolts to remove the lubricating oil storage box 1 separately. There is no need to disassemble the double-layer planetary carrier 2 and the hollow column 23, which makes it convenient to install and disassemble the lubricating oil storage box 1. When a large and heavy-loaded planetary reducer needs to run at high speed, the lubricating oil storage box 1 can be quickly removed to eliminate its influence on the dynamic balance of the planetary carrier, avoid operating stability problems caused by additional inertia force, and achieve dual optimization of sealing reliability and adaptability to multiple working conditions, making it more applicable.

[0052] Example 5: The basic content is the same as that of Example 1, except that the first cavity 231 and the second cavity 232 in the hollow column 23 are separated by a radial partition 233 , and the first cavity 231 is the same as the second cavity 232 .

[0053] When in use, the first cavity 231 and the second cavity 232 in the hollow column 23 are separated into symmetrical double oil storage spaces with the same structure by the radial partition 233, which can store oil independently when the planetary carrier rotates forward and reverse, thereby achieving balanced lubrication efficiency in two-way rotation and ensuring reliable lubrication of the planetary gear transmission under the forward and reverse working conditions of the double-layer planetary carrier 2.

[0054] Example 6: The basic content is the same as that of Example 1, except that: the oil storage base box 12 is divided into a forward oil storage chamber 121 and a reverse oil storage chamber 122 along the radial direction, and the forward oil storage chamber 121 and the reverse oil storage chamber 122 have the same volume.

[0055] When in use, the oil storage base box 12 is radially divided into a forward oil storage chamber 121 and a reverse oil storage chamber 122 with equal volumes and opposite opening directions. When the double-layer planetary carrier 2 rotates clockwise, the opening of the forward oil storage chamber 121 is immersed in the lubricating oil liquid surface, and the oil flows into the first cavity 231 of the hollow column 23 through the corresponding oil hole. When rotating counterclockwise, the opening of the reverse oil storage chamber 122 is immersed in the liquid surface, and the oil flows into the second cavity 232 through another oil hole. The forward oil storage chamber 121 and the reverse oil storage chamber 122 are separated by a partition. The physical isolation effect of the partition prevents the forward oil storage chamber from Oil flow between 121 and the reverse oil storage chamber 122 ensures that the oil storage chambers work independently during forward and reverse rotation. The symmetrical volume and opposite opening design ensure that the immersion depth, oil storage volume and oil flow efficiency of the oil storage chamber remain consistent regardless of the direction of the planetary carrier, avoiding lubrication delays or uneven oil volume during reversing. At the same time, the balanced mass distribution can offset the centrifugal force imbalance during high-speed rotation and reduce planetary carrier vibration. This structure achieves stable lubrication and dynamic balance optimization under frequent reversing conditions through the bidirectional symmetrical oil storage mechanism, significantly improving the reliability and adaptability of the transmission system to working conditions.

[0056] Example 7: The basic content is the same as that of Example 1, except that: the first cavity 231 has a first end face opening 237 on the upper plate 21, and the second cavity 232 has a second end face opening 238 on the lower plate 22; the sealing rubber pad 3 is sealed with the first end face opening 237 and the second end face opening 238 respectively.

[0057] When in use, the sealing rubber pad 3 is tightly fitted with the first end face opening 237 and the second end face opening 238 respectively, and the small displacement of the double-layer planetary carrier 2 during operation is compensated by elastic deformation to form a reliable end face dynamic seal; it ensures that the oil can only flow in a directional manner through the oil hole (the first oil hole 124 or the second oil hole 125) of the oil storage base box 12 and the corresponding oil hole (the first oil hole 234 or the second oil hole 235) of the hollow column 23. When the planetary carrier rotates, the lubricating oil is discharged through the positive opening 121a or the reverse opening 121b. After the opening 122a enters the oil storage cavity, it can only flow into the corresponding cavity (the first cavity 231 or the second cavity 232) through the oil hole, and the sealing structure completely blocks the gap leakage path of the installation interface; at the same time, the end face seal cooperates with the radial partition 233 to form an independent closed space for each cavity. The oil cannot flow between the cavities and can only flow through the preset channels, which not only avoids the entry of external impurities, but also prevents the mixing of oil during bidirectional rotation, significantly improving the sealing performance, flow channel purity and working condition adaptability of the lubrication system.

[0058] Example 8: The basic content is the same as Example 1, except that: a through sun gear mounting hole 212 is opened at the corresponding center positions of the upper plate 21 and the lower plate 22, and a plurality of planet gear mounting holes 213 are distributed at the same circumferential positions of the upper plate 21 and the lower plate 22; the hollow column 23 is located between adjacent planet gear mounting holes 213.

[0059] When in use, the sun gear mounting holes 212 and the planet gear mounting holes 213 respectively opened at the corresponding positions of the upper plate 21 and the lower plate 22 provide a precise positioning reference for the coaxial installation of the sun gear 6 and the planet gear 5 on the double-layer planetary carrier 2. The sun gear 6 passes through the upper and lower plates with the help of the sun gear mounting hole 212 and ensures that its axis remains consistent throughout the entire transmission system. The planet gears 5 are evenly distributed in their respective corresponding planet gear mounting holes 213, and the upper and lower end bearing seats are coaxially positioned through the mounting holes, thereby forming a stable double-layer support rigid transmission structure. This design improves the coaxiality between the sun gear 6 and the planet gear 5 by controlling the position accuracy of the upper and lower mounting holes, effectively reduces the transmission error and vibration caused by installation deviation, and improves the transmission efficiency and stability; at the same time, the hollow column 23 is located between adjacent planet gear mounting holes 213, which not only avoids interference with the rotation of the planet gear 5 during operation, but also provides additional support and stability for the entire planetary carrier structure, further optimizing the performance of the transmission system.

[0060] Example 9: The basic content is the same as that of embodiment 1, except that the flow rate and output of the lubricating oil are precisely controlled by adjusting the sizes of the first oil hole 124 and the first oil hole 234 , and the second oil hole 125 and the second oil hole 235 .

[0061] When in use, by increasing the diameter of the oil hole (the first oil hole 124 or the second oil hole 125) of the oil storage base box 12 and the oil hole (the first oil hole 234 or the second oil hole 235) of the hollow column 23, the flow resistance can be reduced and the oil output per unit time can be increased, thereby meeting the rapid lubrication requirements under high-speed and heavy-load conditions; conversely, reducing the hole size will increase the flow resistance and slow down the oil output rate; this coordinated adjustment mechanism based on the oil hole and oil hole size enables the lubrication system to flexibly adjust the oil output time and flow rate according to the operating status of the equipment, thereby achieving precise lubrication of the planetary gear 5 and the bearing position, and significantly improving the lubrication efficiency and reliability of the transmission system under different working conditions.

[0062] The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiment. Any equivalent modifications or changes made by ordinary technicians in this field based on the contents disclosed in the present invention should be included in the protection scope recorded in the claims.

Claims

1. A double-layer planetary carrier with active lubrication, characterized by: The double-layer planetary carrier with active lubrication comprises a lubricating oil storage box (1), a double-layer planetary carrier (2), and a plurality of sealing rubber pads (3); The lubricating oil storage box (1) comprises two symmetrically arranged mounting plates (11), an oil storage base box (12), and a connecting plate (13); both sides of the oil storage base box (12) are connected to the corresponding mounting plates (11) via the connecting plates (13); the oil storage base box (12) comprises a forward oil storage chamber (121) and a reverse oil storage chamber (122); one end of the forward oil storage chamber (121) is provided with a forward opening (121a), the other end of the forward oil storage chamber (121) is a forward closed end (121b), and one end of the reverse oil storage chamber (122) is provided with a forward opening (121a). The end is a reverse closed end (122b), the other end of the reverse oil storage chamber (122) is provided with a reverse opening (122a), the positive opening (121a) and the reverse closed end (122b) are located on the same end face side of the oil storage base box (12), and the positive closed end (121b) and the reverse opening (122a) are located on the other end face side of the oil storage base box (12); the inner wall of the positive oil storage chamber (121) is provided with two through first oil holes (124), and the inner wall of the reverse oil storage chamber (122) is provided with two through second oil holes (125); The double-layer planet carrier (2) comprises an upper plate (21) and a lower plate (22) coaxially arranged, and a plurality of hollow columns (23) uniformly distributed in the circumferential direction, wherein a first cavity (231) and a second cavity (232) are symmetrically distributed in the radial direction in the hollow columns (23), two through-going first oil holes (234) are provided on the outer circumferential surface of the first cavity (231), and two through-going second oil holes (235) are provided on the outer circumferential surface of the second cavity (232); The inner wall of the oil storage base box (12) is tightly fitted with the outer surface of the hollow column (23); the first oil hole (124) is connected to the first oil hole (234); the second oil hole (125) is connected to the second oil hole (235); and the sealing rubber pad (3) is tightly fitted between the upper end surface of the upper plate (21) and the corresponding mounting plate (11), and between the lower end surface of the lower plate (22) and the corresponding mounting plate (11).

2. The double-layer planetary carrier with active lubrication according to claim 1, characterized in that: The heights of the front opening (121a) and the back opening (122a) are both half the thickness of the oil storage base box (12).

3. The double-layer planetary carrier with active lubrication according to claim 2, characterized in that: The positive opening (121a) is opened in the upper half of the positive oil storage chamber (121), and the reverse opening (122a) is opened in the upper half of the reverse oil storage chamber (122).

4. The double-layer planetary carrier with active lubrication according to claim 1, characterized in that: The curvature of the oil storage base box (12) is consistent with the curvature of the hollow column (23), and the inner surface contour of the oil storage base box (12) is adapted to the outer surface contour of the hollow column (23).

5. The double-layer planetary carrier with active lubrication according to claim 4, characterized in that: The width of the oil storage base box (12) is greater than or equal to the width of the hollow column (23), and the length of the oil storage base box (12) is greater than or equal to the length of the hollow column (23).

6. The double-layer planetary carrier with active lubrication according to claim 1, characterized in that: The mounting plate (11) is provided with a plurality of oil box mounting holes (111); The upper end surface of the upper plate (21) and the lower end surface of the lower plate (22) of the double-layer planetary carrier (2) are respectively provided with end surface mounting holes (221) corresponding one-to-one to the oil box mounting holes (111); After the bolts pass through the oil box mounting hole (111), the sealing rubber pad (3), and the end surface mounting hole (221) in sequence, the mounting plate (11), the sealing rubber pad (3), and the double-layer planetary frame (2) are fixedly connected.

7. The double-layer planetary carrier with active lubrication according to claim 1, characterized in that: The first cavity (231) and the second cavity (232) in the hollow column (23) are separated by a radial partition (233), and the first cavity (231) and the second cavity (232) are identical.

8. The double-layer planetary carrier with active lubrication according to claim 7, characterized in that: The oil storage base box (12) is divided into a forward oil storage chamber (121) and a reverse oil storage chamber (122) along the radial direction, and the forward oil storage chamber (121) and the reverse oil storage chamber (122) have equal volumes.

9. The double-layer planetary carrier with active lubrication according to claim 1, characterized in that: The first cavity (231) is provided with a first end surface opening (237) on the upper plate (21), and the second cavity (232) is provided with a second end surface opening (238) on the lower plate (22); The sealing rubber pad (3) is sealed with the first end surface opening (237) and the second end surface opening (238) respectively.

10. The double-layer planetary carrier with active lubrication according to claim 1, characterized in that: A through sun gear mounting hole (212) is provided at corresponding central positions of the upper plate (21) and the lower plate (22); a plurality of planet gear mounting holes (213) are distributed at the same circumferential positions of the upper plate (21) and the lower plate (22); and the hollow columns (23) are located between adjacent planet gear mounting holes (213).

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