Planetary gear transmission structure and compact oil way hydraulic system of planetary gear transmission structure

Abstract

The invention discloses a planetary gear transmission structure and a compact oil way hydraulic system of the planetary gear transmission structure, and relates to the technical field of planetary gear transmission. The planetary gear transmission oil supply structure solves the problems that an existing planetary gear transmission oil supply structure is complex in installation and disassembly process, the implementation efficiency of the assembly and disassembly process is low, and the appearance size of a planetary gear transmission device is large. A center wheel is rotationally connected with an upper cover shell and a lower cover shell which are combined, two planet wheel bodies are meshed with the two center wheel bodies respectively, planet wheels are rotationally connected with a planet carrier, a front floating gear ring and a rear floating gear ring are meshed with the two planet wheel bodies respectively, gear ring wheel bodies are meshed with the front floating gear ring and the rear floating gear ring, and the rear end of a gear ring wheel shaft is rotationally connected with a main box body. The front end of the gear ring axle is rotationally connected with the planet carrier. The planetary gear transmission structure is more compact, the complexity of the mounting and dismounting process is reduced, and the implementation efficiency of the assembling and dismounting process is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of planetary gear transmission, and in particular to a planetary gear transmission structure and a compact oil circuit hydraulic system of the planetary gear transmission structure. Background Art

[0002] The planetary gear transmission structure is relatively complex compared to the parallel axis gear transmission structure. In addition to the conventional external gear, the gear transmission structure also includes a gear ring, a planetary carrier and other structures, and the bearing structure includes a planetary gear pin bearing structure. The use of conventional main pipelines and branch pipelines to supply oil to each transmission component will greatly increase the complexity of the installation and disassembly process of the planetary gear transmission, affect the implementation efficiency of the assembly and disassembly process, and increase the overall dimensions of the planetary gear transmission device. The compact arrangement of the lubrication structure of the planetary gear transmission components is related to the control of the volume of the entire planetary gear transmission structure and whether the installation and maintenance are convenient. Summary of the invention

[0003] The purpose of the present invention is to solve the problems of the existing planetary gear transmission oil supply structure, such as complicated installation and disassembly processes, low implementation efficiency of assembly and disassembly processes, and large external dimensions of the planetary gear transmission device, and to provide a planetary gear transmission structure and a compact oil circuit hydraulic system of the planetary gear transmission structure.

[0004] The technical solution of the present invention is:

[0005] A planetary gear transmission structure, which includes a center wheel 1, a planetary wheel 2, a front floating ring gear 3, a rear floating ring gear 4, an outer ring gear 5, an upper cover shell 6, a lower cover shell 7, a vertical plate 8, a main case 9, a planet carrier 10, a center wheel bearing 11, a planetary wheel bearing 12, an outer ring gear front bearing 13 and an outer ring gear rear bearing 14. A vertically arranged vertical plate 8 is installed on one side of the main case 9, and an upper cover shell 6 and a lower cover shell 7 are installed on the side of the vertical plate 8 away from the main case 9. The center wheel 1 is a gear shaft, and the rear end of the wheel shaft of the center wheel 1 is horizontally inserted into the main case 9. The center wheel 1 is located in the main case 9. The shaft section is provided with two center wheel bodies that are coaxial and arranged side by side. The upper cover shell 6 and the lower cover shell 7 are provided on the upper and lower sides of the front end of the wheel shaft of the center wheel 1 respectively. The wheel shaft of the center wheel 1 is rotatably connected with the combined upper cover shell 6 and the lower cover shell 7 through the center wheel bearing 11. The upper cover shell 6 and the lower cover shell 7 are installed on the vertical plate 8 after being combined. The planet carrier 10, the planetary gear 2 is a gear shaft, the shaft section of the planetary gear 2 is provided with two planetary gear bodies that are coaxially and arranged side by side, the two planetary gear bodies are respectively meshed with the two center wheel bodies, the wheel shaft of the planetary gear 2 is rotatably connected to the planet carrier 10 through the planetary gear bearing 12, the planetary carrier 10 is sleeved with a front floating gear ring 3 and a rear floating gear ring 4 that are coaxially and arranged side by side, the front floating gear ring 3 and the rear floating gear ring 4 are respectively meshed with the two planetary gear bodies, the outer ring gear 5 includes a ring gear wheel body, a ring gear shaft and a ring gear wheel-ring gear shaft connecting part, the ring gear wheel body is meshed with the front floating gear ring 3 and the rear floating gear ring 4, the ring gear shaft is coaxially arranged on one side of the wheel shaft of the center wheel 1, the rear end of the ring gear shaft is rotatably connected to the main box body 9 through the outer ring gear rear bearing 14, the front end of the ring gear shaft is rotatably connected to the planet carrier 10 through the outer ring gear front bearing 13, and the middle part of the ring gear shaft is connected to the ring gear wheel body through the ring gear wheel-ring gear shaft connecting part.

[0006] Furthermore, a planetary wheel bearing gap 15 is left between the planetary wheel 2 and the planetary wheel bearing 12 by machining dimensions, and a planetary wheel floating gear ring gap 16 is left between the planetary wheel 2 and the front floating gear ring 3 and the rear floating gear ring 4 by machining dimensions.

[0007] The present invention also provides a compact oil circuit hydraulic system of a planetary gear transmission structure, which is realized on the basis of the planetary gear transmission structure described in claim 2, and the compact oil circuit hydraulic system includes a vertical plate-outer gear ring rear bearing connecting pipe 17; a vertically arranged total oil inlet hole 7-1 is processed at the bottom of the lower cover shell 7, and the lower end of the total oil inlet hole 7-1 is connected to the lower surface of the lower cover shell 7, and an L-shaped central wheel bearing oil inlet hole 7-2 is arranged on the upper part of the lower cover shell 7, and the central wheel bearing oil inlet hole 7-2 is vertically arranged. The upper end of the hole section is connected with the center wheel bearing mounting surface of the lower cover shell 7, and the rear end of the horizontal hole section of the center wheel bearing oil inlet hole 7-2 is connected with the total oil inlet hole 7-1. The rear part of the lower cover shell 7 is provided with a horizontally arranged front cover shell oil outlet hole 7-3, and the rear end of the front cover shell oil outlet hole 7-3 is connected with the rear surface of the lower cover shell 7, and the front end of the front cover shell oil outlet hole 7-3 is connected with the total oil inlet hole 7-1; a horizontally arranged vertical plate connecting oil hole 8-1 is processed on the vertical plate 8, and the front and rear ends of the vertical plate connecting oil hole 8-1 are respectively connected with the front and rear surfaces of the vertical plate 8, and the vertical plate connecting The oil hole 8-1 is coaxially arranged with the oil outlet hole 7-3 of the front cover, the front end of the vertical plate connecting oil hole 8-1 is connected with the rear end of the oil outlet hole 7-3 of the front cover, the lower part of the vertical plate 8 is processed with a vertical plate lower inclined hole 8-2, the upper end of the vertical plate lower inclined hole 8-2 is connected with the vertical plate connecting oil hole 8-1, the lower end of the vertical plate lower inclined hole 8-2 is connected with the rear surface of the vertical plate 8, and the middle part of the rear surface of the vertical plate 8 is processed with a coaxially arranged vertical plate annular groove 8-3; a horizontally arranged center wheel center wheel planetary wheel lubricating oil pipe 10-1 is installed on the planet carrier 10, and the center wheel center wheel line The planetary gear lubricating oil pipe 10-1 is located at the side of the two center wheel bodies of the center wheel 1, and the front end of the center wheel center wheel planetary gear lubricating oil pipe 10-1 is connected with the vertical plate ring groove 8-3. The center wheel center wheel planetary gear lubricating oil pipe 10-1 is radially processed with a plurality of center wheel planetary gear injection holes 10-2 on one side close to the two center wheel bodies, and the rear part of the planet carrier 10 is processed with a vertically arranged outer gear ring front bearing oil inlet hole 10-3, and the upper end of the outer gear ring front bearing oil inlet hole 10-3 is connected with the outer gear ring front bearing mounting surface of the planet carrier 10;A planetary bearing center hole 12-1 is machined on the planetary bearing 12 along the axial direction, and the front and rear ends of the planetary bearing center hole 12-1 are respectively connected with the front and rear surfaces of the planetary bearing 12, and the front end of the planetary bearing center hole 12-1 is connected with the vertical plate ring groove 8-3. A planetary bearing connecting oil hole 12-3 is machined radially at the rear of the planetary bearing 12, and the lower end of the planetary bearing connecting oil hole 12-3 is connected with the planetary bearing center hole 12-1, and the upper end of the planetary bearing connecting oil hole 12-3 is connected with the lower end of the outer gear ring front bearing oil inlet hole 10-3. Two planetary bearing oil inlet holes 12-2 arranged in parallel are machined in the middle of the planetary bearing 12 along the radial direction. The two planetary bearing oil inlets The upper end of the hole 12-2 is connected to the center hole 12-1 of the planetary gear bearing, and the lower ends of the two planetary gear bearing oil inlet holes 12-2 are connected to the planetary gear planetary gear bearing gap 15. The two planetary gear bodies of the planetary gear 2 are connected at the radial direction with a planetary gear radial oil hole 2-1. The upper end of the planetary gear radial oil hole 2-1 is connected to the planetary gear planetary gear bearing gap 15, and the lower end of the planetary gear radial oil hole 2-1 is connected to the planetary gear floating ring gear gap 16; the front floating ring gear 3 and the rear floating ring gear 4 are respectively processed with a front floating ring gear connecting oil hole 3-1 and a rear floating ring gear connecting oil hole 4-1, and the front floating ring gear connecting oil hole 3-1 and the rear floating ring gear connecting oil hole 4-1 are both connected to the planetary gear floating ring gear gap 16; the outer gear An outer gear ring rear bearing oil inlet hole 14-1 is machined radially on the outer gear ring rear bearing 14, and the upper end of the outer gear ring rear bearing oil inlet hole 14-1 is connected to the gear ring wheel shaft mounting surface of the outer gear ring rear bearing 14, one end of the vertical plate-outer gear ring rear bearing connecting pipe 17 is connected to the rear end of the lower inclined hole 8-2 of the vertical plate, and the other end of the vertical plate-outer gear ring rear bearing connecting pipe 17 is connected to the lower end of the outer gear ring rear bearing oil inlet hole 14-1, and an outer gear ring rear bearing oil storage ring groove 14-2 is machined on the inner surface of the outer gear ring rear bearing 14 along the circumferential direction, and an outer gear ring wheel center oil hole 5-2 is machined on the front part of the gear ring wheel shaft of the outer gear ring wheel 5, and the front end of the outer gear ring wheel center oil hole 5-2 is connected to the front surface of the gear ring wheel shaft, and the axle of the center wheel 1 is axially A center hole 1-1 is machined on the center wheel, and the rear end of the center hole 1-1 is connected to the rear surface of the wheel shaft of the center wheel 1. Center wheel oil drain holes 1-2 are machined radially on both center wheel bodies. The lower end of the center wheel oil drain hole 1-2 is connected to the center hole 1-1, and the upper end of the center wheel oil drain hole 1-2 is connected to the side of the center wheel body. The center hole 1-1 of the center wheel coincides with the center line of the center oil hole 5-2 of the outer ring gear. A vertically arranged outer ring gear radial oil hole 5-1 is machined on the outer ring gear 5. The upper and lower ends of the outer ring gear radial oil hole 5-1 are respectively connected to the side surface of the ring gear shaft, and the two ends of the outer ring gear radial oil hole 5-1 are connected to the outer ring gear rear bearing oil storage ring groove 14-2. ;

[0008] Furthermore, the gear surface lubrication of the center wheel 1 and the planetary wheel 2 comes from two oil circuits: the lubricating oil in the first oil circuit passes through the total oil inlet hole 7-1, the front cover oil outlet hole 7-3, the vertical plate connecting oil hole 8-1, the vertical plate annular groove 8-3, the center wheel planetary gear lubricating oil pipe 10-1 and the center wheel planetary gear injection hole 10-2 in sequence; the lubricating oil in the second oil circuit passes through the total oil inlet hole 7-1, the front cover oil outlet hole 7-3, the vertical plate connecting oil hole 8-1, the vertical plate lower inclined hole 8-2, the vertical plate-outer ring rear bearing connecting pipe 17, the outer ring rear bearing oil inlet hole 14-1, the outer ring rear bearing oil storage ring groove 14-2, the outer ring wheel radial oil hole 5-1, the outer ring wheel center oil hole 5-2, the center wheel center hole 1-1 and the center wheel oil drain hole 1-2 in sequence.

[0009] Furthermore, the lubricating oil path of the outer gear ring rear bearing 14 is directed to: the main oil inlet hole 7-1, the front cover oil outlet hole 7-3, the vertical plate connecting oil hole 8-1, the vertical plate lower inclined hole 8-2, the vertical plate-outer gear ring rear bearing connecting pipe 17 and the outer gear ring rear bearing oil inlet hole 14-1.

[0010] Furthermore, the lubricating oil path of the planetary gear bearing 12 is arranged along the following paths: the main oil inlet hole 7-1, the front cover oil outlet hole 7-3, the vertical plate connecting oil hole 8-1, the vertical plate annular groove 8-3, the planetary gear bearing center hole 12-1, the planetary gear bearing oil inlet hole 12-2 and the planetary gear bearing gap 15.

[0011] Furthermore, the direction of the lubricating oil path on the gear surface of the planetary gear 2 and the front floating gear ring 3 and the rear floating gear ring 4 is: the main oil inlet hole 7-1, the front cover oil outlet hole 7-3, the vertical plate connecting oil hole 8-1, the vertical plate annular groove 8-3, the planetary gear bearing center hole 12-1, the planetary gear bearing oil inlet hole 12-2, the planetary gear planetary gear bearing gap 15, the planetary gear radial oil hole 2-1 and the planetary gear floating gear ring gap 16.

[0012] Furthermore, the direction of the lubricating oil path for the gear surfaces of the front floating ring gear 3, the rear floating ring gear 4 and the outer ring gear 5 is: the total oil inlet hole 7-1, the front cover oil outlet hole 7-3, the vertical plate connecting oil hole 8-1, the vertical plate annular groove 8-3, the planetary gear bearing center hole 12-1, the planetary gear bearing oil inlet hole 12-2, the planetary gear planetary gear bearing gap 15, the planetary gear radial oil hole 2-1, the planetary gear floating ring gear gap 16, the front floating ring gear connecting oil hole 3-1 and the rear floating ring gear connecting oil hole 4-1, the gear surfaces of the front floating ring gear 3 and the rear floating ring gear 4 and the outer ring gear 5.

[0013] Furthermore, the lubricating oil path of the outer ring gear front bearing 13 goes as follows: the main oil inlet hole 7-1, the front cover shell oil outlet hole 7-3, the vertical plate connecting oil hole 8-1, the vertical plate annular groove 8-3, the planetary gear bearing center hole 12-1, the planetary gear bearing connecting oil hole 12-3 and the outer ring gear front bearing oil inlet hole 10-3.

[0014] Compared with the prior art, the present invention has the following effects:

[0015] The compact oil circuit hydraulic system of the planetary gear transmission structure described in the present invention greatly reduces the conventional piping structure used for planetary gear transmission and bearing lubrication. By processing connecting oil holes on transmission components and box support components and connecting the connecting oil holes along the transmission chain, lubrication of gear transmission and bearings is achieved, making the planetary gear transmission structure more compact, reducing the complexity of the installation and disassembly process, and improving the implementation efficiency of the assembly and disassembly process. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the arrangement of the planetary gear transmission structure of the present invention; Figure 2 It is a schematic diagram of the arrangement of the box support structure of the present invention; Figure 3 is a schematic diagram of the bearing structure arrangement of the present invention; Figure 4 It is a schematic diagram of the oil circuit layout of the planetary gear transmission of the present invention; Figure 5 It is a schematic diagram of the extracted oil circuit layout of the present invention; Figure 6 is a cross-sectional view of the center wheel of the present invention; Figure 7 is a cross-sectional view of the front floating gear ring and the rear floating gear ring of the present invention; Figure 8 is a cross-sectional view of the outer ring gear of the present invention; Fig. 9 is a cross-sectional view of the lower cover shell of the present invention; Fig.10 is a cross-sectional view of the vertical plate of the present invention; Fig.11 is a cross-sectional view of the planet carrier of the present invention; Fig.12 is a cross-sectional view of the planetary gear bearing of the present invention; Fig.13 It is a cross-sectional view of the outer gear ring front bearing described in the present invention.

[0017] In the figure: 1, center wheel; 2, planetary gear; 3, front floating gear ring; 4, rear floating gear ring; 5, outer gear ring wheel; 6, upper cover shell; 7, lower cover shell; 8, vertical plate; 9, main housing; 10, planet carrier; 11, center wheel bearing; 12, planetary gear bearing; 13, outer gear ring front bearing; 14, outer gear ring rear bearing; 15, planetary gear planetary gear bearing clearance; 16, planetary gear floating gear ring clearance; 17, vertical plate-outer gear ring rear bearing connecting pipe; 1-1, center wheel center hole; 1-2, center wheel oil drain hole; 3-1, front floating gear ring connecting oil hole; 4-1, rear floating gear ring connecting oil hole; 5-1, outer Radial oil hole of the ring gear; 5-2, central oil hole of the outer ring gear; 7-1, total oil inlet hole; 7-2, oil inlet hole of the center wheel bearing; 7-3, oil outlet hole of the front cover; 8-1, connecting oil hole of the vertical plate; 8-2, lower inclined hole of the vertical plate; 8-3, annular groove of the vertical plate; 10-1, lubricating oil pipe of the center wheel planetary gear; 10-2, oil injection hole of the center wheel planetary gear; 10-3, oil inlet hole of the front bearing of the outer ring gear; 12-1, central hole of the planetary gear bearing; 12-2, oil inlet hole of the planetary gear bearing; 12-3, connecting oil hole of the planetary gear bearing; 14-1, oil inlet hole of the rear bearing of the outer ring gear; 14-2, oil storage ring groove of the rear bearing of the outer ring gear. DETAILED DESCRIPTION

[0018] Specific implementation method 1: Combination Figures 1 to 13The present embodiment is described. A planetary gear transmission structure of the present embodiment comprises a center wheel 1, a planetary wheel 2, a front floating gear ring 3, a rear floating gear ring 4, an outer gear ring wheel 5, an upper cover shell 6, a lower cover shell 7, a vertical plate 8, a main housing 9, a planet carrier 10, a center wheel bearing 11, a planetary wheel bearing 12, an outer gear ring front bearing 13 and an outer gear ring rear bearing 14. A vertically arranged vertical plate 8 is installed on one side of the main housing 9, and an upper cover shell 6 and a lower cover shell 7 are installed on the side of the vertical plate 8 away from the main housing 9. The center wheel 1 is a gear shaft, and the rear end of the wheel shaft of the center wheel 1 is horizontally inserted into the main housing 9. The center wheel 1 is located in the internal shaft section of the main housing 9 and is provided with two center wheel bodies that are coaxial and arranged side by side. The upper cover shell 6 and the lower cover shell 7 are respectively provided on the upper and lower sides of the front end of the wheel shaft of the center wheel 1. The wheel shaft of the center wheel 1 is rotatably connected with the combined upper cover shell 6 and the lower cover shell 7 through the center wheel bearing 11. The upper cover shell 6 and the lower cover shell 7 are installed on the vertical plate 8 after being combined. The main housing A planet carrier 10 is installed inside 9, and the planetary gear 2 is a gear shaft. The shaft section of the planetary gear 2 is provided with two planetary gear bodies that are coaxially and arranged side by side. The two planetary gear bodies are respectively meshed with the two center wheel bodies. The wheel shaft of the planetary gear 2 is rotatably connected to the planet carrier 10 through a planetary gear bearing 12. A front floating gear ring 3 and a rear floating gear ring 4 that are coaxially and arranged side by side are sleeved on the planetary carrier 10. The front floating gear ring 3 and the rear floating gear ring 4 are respectively meshed with the two planetary gear bodies. The outer ring gear 5 includes a ring gear body, a ring gear shaft and a ring gear wheel-ring gear shaft connecting part. The ring gear body is meshed with the front floating gear ring 3 and the rear floating gear ring 4. The ring gear shaft is coaxially arranged on one side of the wheel shaft of the center wheel 1. The rear end of the ring gear shaft is rotatably connected to the main housing 9 through an outer ring gear rear bearing 14, the front end of the ring gear shaft is rotatably connected to the planet carrier 10 through an outer ring gear front bearing 13, and the middle part of the ring gear shaft is connected to the ring gear body through a ring gear wheel-ring gear shaft connecting part.

[0019] Specific implementation method 2: Combination Figures 1 to 13 To explain this embodiment, a planetary gear bearing gap 15 is left between the planetary gear 2 and the planetary gear bearing 12 by machining dimensions, and a planetary gear floating ring gap 16 is left between the planetary gear 2 and the front floating ring gear 3 and the rear floating ring gear 4 by machining dimensions. Other components and connection relationships are the same as those of the first embodiment.

[0020] Specific implementation method three: Combination Figures 1 to 13Description of the present embodiment. The present embodiment is a compact oil circuit hydraulic system of a planetary gear transmission structure. The compact oil circuit hydraulic system is realized on the basis of the planetary gear transmission structure described in claim 2. The compact oil circuit hydraulic system includes a vertical plate-outer gear ring rear bearing connecting pipe 17; a vertically arranged total oil inlet hole 7-1 is processed at the bottom of the lower cover shell 7, and the lower end of the total oil inlet hole 7-1 is connected to the lower surface of the lower cover shell 7, and an L-shaped central wheel bearing oil inlet hole 7-2 is arranged on the upper part of the lower cover shell 7. The upper end of the vertical hole section of hole 7-2 is connected with the center wheel bearing mounting surface of the lower cover shell 7, and the rear end of the horizontal hole section of the center wheel bearing oil inlet hole 7-2 is connected with the total oil inlet hole 7-1. The rear part of the lower cover shell 7 is provided with a horizontally arranged front cover shell oil outlet hole 7-3, the rear end of the front cover shell oil outlet hole 7-3 is connected with the rear surface of the lower cover shell 7, and the front end of the front cover shell oil outlet hole 7-3 is connected with the total oil inlet hole 7-1; a horizontally arranged vertical plate connecting oil hole 8-1 is processed on the vertical plate 8, and the front and rear ends of the vertical plate connecting oil hole 8-1 are respectively connected with the front and rear surfaces of the vertical plate 8. The vertical plate connecting oil hole 8-1 is coaxially arranged with the front cover shell oil outlet hole 7-3, the front end of the vertical plate connecting oil hole 8-1 is connected with the rear end of the front cover shell oil outlet hole 7-3, the lower part of the vertical plate 8 is processed with a vertical plate lower inclined hole 8-2, the upper end of the vertical plate lower inclined hole 8-2 is connected with the vertical plate connecting oil hole 8-1, the lower end of the vertical plate lower inclined hole 8-2 is connected with the rear surface of the vertical plate 8, and the middle part of the rear surface of the vertical plate 8 is processed with a coaxially arranged vertical plate annular groove 8-3; a horizontally arranged center wheel center wheel planetary wheel lubricating oil pipe 10-1 is installed on the planetary frame 10, and the ... The planetary gear lubricating oil pipe 10-1 is located at the side of the two center wheel bodies of the center wheel 1, and the front end of the center wheel center wheel planetary gear lubricating oil pipe 10-1 is connected with the vertical plate ring groove 8-3. The center wheel center wheel planetary gear lubricating oil pipe 10-1 is radially processed with a plurality of center wheel planetary gear injection holes 10-2 on one side close to the two center wheel bodies, and the rear part of the planet carrier 10 is processed with a vertically arranged outer ring gear front bearing oil inlet hole 10-3, and the upper end of the outer ring gear front bearing oil inlet hole 10-3 is connected with the outer ring gear front bearing mounting surface of the planet carrier 10;A planetary bearing center hole 12-1 is machined on the planetary bearing 12 along the axial direction, and the front and rear ends of the planetary bearing center hole 12-1 are respectively connected with the front and rear surfaces of the planetary bearing 12, and the front end of the planetary bearing center hole 12-1 is connected with the vertical plate ring groove 8-3. A planetary bearing connecting oil hole 12-3 is machined radially at the rear of the planetary bearing 12, and the lower end of the planetary bearing connecting oil hole 12-3 is connected with the planetary bearing center hole 12-1, and the upper end of the planetary bearing connecting oil hole 12-3 is connected with the lower end of the outer gear ring front bearing oil inlet hole 10-3. Two planetary bearing oil inlet holes 12-2 arranged in parallel are machined in the middle of the planetary bearing 12 along the radial direction. The two planetary bearing oil inlets The upper end of the hole 12-2 is connected to the center hole 12-1 of the planetary gear bearing, and the lower ends of the two planetary gear bearing oil inlet holes 12-2 are connected to the planetary gear planetary gear bearing gap 15. The two planetary gear bodies of the planetary gear 2 are connected at the radial direction with a planetary gear radial oil hole 2-1. The upper end of the planetary gear radial oil hole 2-1 is connected to the planetary gear planetary gear bearing gap 15, and the lower end of the planetary gear radial oil hole 2-1 is connected to the planetary gear floating ring gear gap 16; the front floating ring gear 3 and the rear floating ring gear 4 are respectively processed with a front floating ring gear connecting oil hole 3-1 and a rear floating ring gear connecting oil hole 4-1, and the front floating ring gear connecting oil hole 3-1 and the rear floating ring gear connecting oil hole 4-1 are both connected to the planetary gear floating ring gear gap 16; the outer gear An outer gear ring rear bearing oil inlet hole 14-1 is machined radially on the outer gear ring rear bearing 14, and the upper end of the outer gear ring rear bearing oil inlet hole 14-1 is connected to the gear ring wheel shaft mounting surface of the outer gear ring rear bearing 14, one end of the vertical plate-outer gear ring rear bearing connecting pipe 17 is connected to the rear end of the lower inclined hole 8-2 of the vertical plate, and the other end of the vertical plate-outer gear ring rear bearing connecting pipe 17 is connected to the lower end of the outer gear ring rear bearing oil inlet hole 14-1, and an outer gear ring rear bearing oil storage ring groove 14-2 is machined on the inner surface of the outer gear ring rear bearing 14 along the circumferential direction, and an outer gear ring wheel center oil hole 5-2 is machined on the front part of the gear ring wheel shaft of the outer gear ring wheel 5, and the front end of the outer gear ring wheel center oil hole 5-2 is connected to the front surface of the gear ring wheel shaft, and the axle of the center wheel 1 is axially A center hole 1-1 is machined on the center wheel, and the rear end of the center hole 1-1 is connected to the rear surface of the axle of the center wheel 1. Center wheel oil drain holes 1-2 are machined radially on both center wheel bodies. The lower end of the center wheel oil drain hole 1-2 is connected to the center hole 1-1, and the upper end of the center wheel oil drain hole 1-2 is connected to the side of the center wheel body. The center line of the center hole 1-1 of the center wheel coincides with the center oil hole 5-2 of the outer ring gear. A vertically arranged outer ring gear radial oil hole 5-1 is machined on the outer ring gear 5. The upper and lower ends of the outer ring gear radial oil hole 5-1 are respectively connected to the side surface of the ring gear axle, and the two ends of the outer ring gear radial oil hole 5-1 are connected to the outer ring gear rear bearing oil storage ring groove 14-2. Other components and connection relationships are the same as those of the first or second specific implementation. ;

[0021] Specific implementation method four: Combination Figures 1 to 13To explain the present embodiment, the gear surface lubrication for the center wheel 1 and the planetary wheel 2 in the present embodiment comes from two oil circuits: the lubricating oil in the first oil circuit passes through the total oil inlet hole 7-1, the front cover oil outlet hole 7-3, the vertical plate connecting oil hole 8-1, the vertical plate annular groove 8-3, the center wheel planetary gear lubricating oil pipe 10-1 and the center wheel planetary gear injection hole 10-2 in sequence; the lubricating oil in the second oil circuit passes through the total oil inlet hole 7-1, the front cover oil outlet hole 7-3, the vertical plate connecting oil hole 8-1, the vertical plate lower inclined hole 8-2, the vertical plate-outer ring rear bearing connecting pipe 17, the outer ring rear bearing oil inlet hole 14-1, the outer ring rear bearing oil storage ring groove 14-2, the outer ring wheel radial oil hole 5-1, the outer ring wheel center oil hole 5-2, the center wheel center hole 1-1 and the center wheel oil drain hole 1-2 in sequence. In this way, the first oil circuit plays a major auxiliary role in the gear surfaces of the center wheel 1 and the planetary wheels 2; the second oil circuit plays a major auxiliary role in the gear surfaces of the center wheel 1 and the planetary wheels 2. Other components and connection relationships are the same as those of the first, second or third embodiments.

[0022] Specific implementation method five: Combination Figures 1 to 13 This embodiment is described. The lubricating oil path for the outer gear ring rear bearing 14 of this embodiment is as follows: the main oil inlet hole 7-1, the front cover oil outlet hole 7-3, the vertical plate connecting oil hole 8-1, the vertical plate lower inclined hole 8-2, the vertical plate-outer gear ring rear bearing connecting pipe 17 and the outer gear ring rear bearing oil inlet hole 14-1. Other components and connection relationships are the same as those of the specific embodiments one, two, three or four.

[0023] Specific implementation method six: Combination Figures 1 to 13 This embodiment is described. The lubricating oil path of the planetary gear bearing 12 of this embodiment is as follows: the main oil inlet hole 7-1, the front cover oil outlet hole 7-3, the vertical plate connecting oil hole 8-1, the vertical plate annular groove 8-3, the planetary gear bearing center hole 12-1, the planetary gear bearing oil inlet hole 12-2 and the planetary gear planetary gear bearing gap 15. Other components and connection relationships are the same as those of the specific embodiments one, two, three, four or five.

[0024] Specific implementation method seven: Combination Figures 1 to 13 This embodiment is described. The lubricating oil path for the gear surface of the planetary gear 2 and the front floating gear ring 3 and the rear floating gear ring 4 in this embodiment is as follows: the main oil inlet hole 7-1, the front housing oil outlet hole 7-3, the vertical plate connecting oil hole 8-1, the vertical plate annular groove 8-3, the planetary gear bearing center hole 12-1, the planetary gear bearing oil inlet hole 12-2, the planetary gear planetary gear bearing gap 15, the planetary gear radial oil hole 2-1 and the planetary gear floating gear ring gap 16. The other components and connection relationships are the same as those of the specific embodiments one, two, three, four, five or six.

[0025] Specific implementation method eight: Combination Figures 1 to 13This embodiment is described. The lubricating oil path for the gear surface of the front floating gear ring 3, the rear floating gear ring 4 and the outer gear ring wheel 5 in this embodiment is as follows: the total oil inlet hole 7-1, the front cover oil outlet hole 7-3, the vertical plate connecting oil hole 8-1, the vertical plate ring groove 8-3, the planetary gear bearing center hole 12-1, the planetary gear bearing oil inlet hole 12-2, the planetary gear planetary gear bearing gap 15, the planetary gear radial oil hole 2-1, the planetary gear floating gear ring gap 16, the front floating gear ring connecting oil hole 3-1 and the rear floating gear ring connecting oil hole 4-1, the front floating gear ring 3 and the rear floating gear ring 4 and the gear surface of the outer gear ring wheel 5. The other components and connection relationships are the same as those of the specific embodiments one, two, three, four, five, six or seven.

[0026] Specific implementation method nine: Combination Figures 1 to 13 This embodiment is described. The lubricating oil path of the outer gear ring front bearing 13 of this embodiment is as follows: the main oil inlet hole 7-1, the front cover oil outlet hole 7-3, the vertical plate connecting oil hole 8-1, the vertical plate annular groove 8-3, the planetary gear bearing center hole 12-1, the planetary gear bearing connecting oil hole 12-3 and the outer gear ring front bearing oil inlet hole 10-3. The other components and connection relationships are the same as those of the specific embodiments 1, 2, 3, 4, 5, 6, 7 or 8.

[0027] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A planetary gear transmission structure, characterized in that: It comprises a central wheel (1), planetary wheels (2), a front floating gear ring (3), a rear floating gear ring (4), an outer gear ring wheel (5), an upper cover shell (6), a lower cover shell (7), a vertical plate (8), a main housing (9), a planetary carrier (10), a central wheel bearing (11), a planetary wheel bearing (12), an outer gear ring front bearing (13) and an outer gear ring rear bearing (14). A vertically arranged vertical plate (8) is installed on one side of the main housing (9), and an upper cover shell (6) and a lower cover shell (7) are installed on a side of the vertical plate (8) away from the main housing (9). The center wheel (1) is a gear shaft. The rear end of the wheel shaft of the center wheel (1) is horizontally inserted into the main housing (9). The center wheel (1) is located in the main housing (9). The shaft section is provided with two center wheel bodies that are coaxial and arranged side by side. The upper and lower sides of the front end of the wheel shaft of the center wheel (1) are provided with an upper cover shell (6) and a lower cover shell (7) respectively. The wheel shaft of the center wheel (1) is rotatably connected with the combined upper cover shell (6) and the lower cover shell (7) through a center wheel bearing (11). The upper cover shell (6) and the lower cover shell (7) are installed on the vertical plate (8) after being combined. A planet carrier (10) is installed inside the main housing (9); the planet wheel (2) is a gear shaft; the shaft section of the planet wheel (2) is provided with two planet wheel bodies which are coaxially and arranged side by side; the two planet wheel bodies are respectively meshed with two center wheel bodies; the wheel shaft of the planet wheel (2) is rotatably connected to the planet carrier (10) through a planet wheel bearing (12); a front floating gear ring (3) and a rear floating gear ring (4) which are coaxially and arranged side by side are sleeved on the planet carrier (10); the front floating gear ring (3) and the rear floating gear ring (4) are respectively meshed with the two planet wheel bodies; The outer ring gear (5) comprises a ring gear body, a ring gear shaft and a ring gear-ring gear shaft connecting portion. The ring gear body is meshed with the front floating ring gear (3) and the rear floating ring gear (4). The ring gear shaft is coaxially arranged on one side of the wheel shaft of the center wheel (1). The rear end of the ring gear shaft is rotatably connected to the main housing (9) through an outer ring gear rear bearing (14). The front end of the ring gear shaft is rotatably connected to the planet carrier (10) through an outer ring gear front bearing (13). The middle part of the ring gear shaft is connected to the ring gear body through a ring gear-ring gear shaft connecting portion.

2. The planetary gear transmission structure according to claim 1, characterized in that: A planetary wheel bearing clearance (15) is left between the planetary wheel (2) and the planetary wheel bearing (12) by machining dimensions, and a planetary wheel floating gear clearance (16) is left between the planetary wheel (2) and the front floating gear ring (3) and the rear floating gear ring (4) by machining dimensions.

3. A compact oil circuit hydraulic system with a planetary gear transmission structure, characterized in that: The compact oil circuit hydraulic system is realized on the basis of the planetary gear transmission structure described in claim 2, and the compact oil circuit hydraulic system includes a vertical plate-outer gear ring rear bearing connecting pipe (17); a vertically arranged total oil inlet hole (7-1) is processed at the bottom of the lower cover shell (7), and the lower end of the total oil inlet hole (7-1) is connected to the lower surface of the lower cover shell (7); the upper part of the lower cover shell (7) is provided with an L-shaped central wheel bearing oil inlet hole (7-2), and the upper end of the vertical hole section of the central wheel bearing oil inlet hole (7-2) is connected to the central wheel bearing mounting surface of the lower cover shell (7). The rear end of the horizontal hole section of the center wheel bearing oil inlet hole (7-2) is connected to the main oil inlet hole (7-1); the rear part of the lower cover shell (7) is provided with a horizontally arranged front cover shell oil outlet hole (7-3); the rear end of the front cover shell oil outlet hole (7-3) is connected to the rear surface of the lower cover shell (7); the front end of the front cover shell oil outlet hole (7-3) is connected to the main oil inlet hole (7-1); the vertical plate (8) is processed with a horizontally arranged vertical plate connecting oil hole (8-1); the front and rear ends of the vertical plate connecting oil hole (8-1) are respectively connected to the front and rear surfaces of the vertical plate (8); the vertical plate connecting oil hole (8-1) is connected to the front cover The oil outlet hole (7-3) of the housing is coaxially arranged, the front end of the vertical plate connecting oil hole (8-1) is connected with the rear end of the front cover housing oil outlet hole (7-3), the lower part of the vertical plate (8) is processed with a vertical plate lower inclined hole (8-2), the upper end of the vertical plate lower inclined hole (8-2) is connected with the vertical plate connecting oil hole (8-1), the lower end of the vertical plate lower inclined hole (8-2) is connected with the vertical plate rear surface, and the middle part of the rear surface of the vertical plate (8) is processed with a coaxially arranged vertical plate annular groove (8-3); a horizontally arranged center wheel planetary gear lubricating oil pipe (10-1) is installed on the planet carrier (10), and the ... The wheel lubricating oil pipe (10-1) is located at the side of the two center wheel bodies of the center wheel (1), the front end of the center wheel planetary gear lubricating oil pipe (10-1) is connected to the vertical plate ring groove (8-3), a plurality of center wheel planetary gear oil injection holes (10-2) are radially processed on one side of the center wheel planetary gear lubricating oil pipe (10-1) close to the two center wheel bodies, and a vertically arranged outer ring gear front bearing oil inlet hole (10-3) is processed at the rear of the planet carrier (10), and the upper end of the outer ring gear front bearing oil inlet hole (10-3) is connected to the outer ring gear front bearing mounting surface of the planet carrier (10);A planetary bearing center hole (12-1) is machined on the planetary bearing (12) along the axial direction, and the front and rear ends of the planetary bearing center hole (12-1) are respectively connected to the front and rear surfaces of the planetary bearing (12), and the front end of the planetary bearing center hole (12-1) is connected to the vertical plate annular groove (8-3). A planetary bearing connecting oil hole (12-3) is machined radially at the rear of the planetary bearing (12), and the lower end of the planetary bearing connecting oil hole (12-3) is connected to the planetary bearing center hole (12-1), and the upper end of the planetary bearing connecting oil hole (12-3) is connected to the lower end of the outer gear ring front bearing oil inlet hole (10-3). Two planetary bearing oil inlet holes (12-2) arranged in parallel are machined in the middle of the planetary bearing (12) along the radial direction, and the two planetary bearing oil inlet holes (12-3) are connected to the outer gear ring front bearing oil inlet hole (10-3). The upper end of the two planetary gear bearings (12-2) is connected to the center hole (12-1) of the planetary gear bearing, the lower ends of the two planetary gear bearing oil inlet holes (12-2) are connected to the planetary gear planetary gear bearing gap (15), the two planetary gear bodies of the planetary gear (2) are radially processed with a planetary gear radial oil hole (2-1), the upper end of the planetary gear radial oil hole (2-1) is connected to the planetary gear planetary gear bearing gap (15), and the lower end of the planetary gear radial oil hole (2-1) is connected to the planetary gear floating ring gap (16); the front floating ring gear (3) and the rear floating ring gear (4) are respectively processed with a front floating ring gear connecting oil hole (3-1) and a rear floating ring gear connecting oil hole (4-1), and the front floating ring gear connecting oil hole (3-1) and the rear floating ring gear connecting oil hole (4-1) are both connected to the planetary gear floating ring gear gap (16);An outer gear ring rear bearing oil inlet hole (14-1) is machined radially on the outer gear ring rear bearing (14), the upper end of the outer gear ring rear bearing oil inlet hole (14-1) is connected to the gear ring wheel shaft mounting surface of the outer gear ring rear bearing (14), one end of the vertical plate-outer gear ring rear bearing connecting pipe (17) is connected to the rear end of the vertical plate lower inclined hole (8-2), the other end of the vertical plate-outer gear ring rear bearing connecting pipe (17) is connected to the lower end of the outer gear ring rear bearing oil inlet hole (14-1), the inner surface of the outer gear ring rear bearing (14) is machined with an outer gear ring rear bearing oil storage ring groove (14-2) along the circumferential direction, the front part of the gear ring wheel shaft of the outer gear ring wheel (5) is machined with an outer gear ring wheel center oil hole (5-2), the front end of the outer gear ring wheel center oil hole (5-2) is connected to the front surface of the gear ring wheel shaft, the upper shaft of the center wheel (1) is along the axis A center hole (1-1) of a center wheel is machined in the center wheel, and the rear end of the center hole (1-1) of the center wheel is connected with the rear surface of the wheel shaft of the center wheel (1). Center wheel oil drain holes (1-2) are machined radially on the two center wheel bodies. The lower end of the center wheel oil drain hole (1-2) is connected with the center hole (1-1) of the center wheel, and the upper end of the center wheel oil drain hole (1-2) is connected with the side surface of the center wheel body. The center line of the center hole (1-1) of the center wheel coincides with the center oil hole (5-2) of the outer ring gear. The outer ring gear (5) is machined with a vertically arranged outer ring gear radial oil hole (5-1). The upper and lower ends of the outer ring gear radial oil hole (5-1) are respectively connected with the side surface of the ring gear shaft, and the two ends of the outer ring gear radial oil hole (5-1) are connected with the outer ring gear rear bearing oil storage ring groove (14-2). ; 4. The compact oil circuit hydraulic system of the planetary gear transmission structure according to claim 3 is characterized in that: The gear surface lubrication of the center wheel (1) and the planetary wheel (2) comes from two oil circuits: the lubricating oil in the first oil circuit passes through the total oil inlet hole (7-1), the front cover oil outlet hole (7-3), the vertical plate connecting oil hole (8-1), the vertical plate annular groove (8-3), the center wheel planetary gear lubricating oil pipe (10-1) and the center wheel planetary gear oil injection hole (10-2) in sequence; the lubricating oil in the second oil circuit passes through the total oil inlet hole (7-1), the front cover oil outlet hole (7-3), the vertical plate connecting oil hole (8-1), the vertical plate lower inclined hole (8-2), the vertical plate-outer gear ring rear bearing connecting pipe (17), the outer gear ring rear bearing oil inlet hole (14-1), the outer gear ring rear bearing oil storage annular groove (14-2), the outer gear ring wheel radial oil hole (5-1), the outer gear ring wheel center oil hole (5-2), the center wheel center hole (1-1) and the center wheel oil drain hole (1-2) in sequence.

5. The compact oil circuit hydraulic system of the planetary gear transmission structure according to claim 4, characterized in that: The lubricating oil path of the outer gear ring rear bearing (14) is directed to: a total oil inlet hole (7-1), a front cover shell oil outlet hole (7-3), a vertical plate connecting oil hole (8-1), a vertical plate lower inclined hole (8-2), a vertical plate-outer gear ring rear bearing connecting pipe (17) and an outer gear ring rear bearing oil inlet hole (14-1).

6. The compact oil circuit hydraulic system of the planetary gear transmission structure according to claim 5, characterized in that: The lubricating oil path of the planetary gear bearing (12) is directed to: a main oil inlet hole (7-1), a front housing oil outlet hole (7-3), a vertical plate connecting oil hole (8-1), a vertical plate annular groove (8-3), a planetary gear bearing center hole (12-1), a planetary gear bearing oil inlet hole (12-2) and a planetary gear bearing clearance (15).

7. The compact oil circuit hydraulic system of the planetary gear transmission structure according to claim 6, characterized in that: The lubricating oil path for the gear surfaces of the planetary gear (2) and the front floating gear ring (3) and the rear floating gear ring (4) is as follows: the main oil inlet hole (7-1), the front cover oil outlet hole (7-3), the vertical plate connecting oil hole (8-1), the vertical plate annular groove (8-3), the planetary gear bearing center hole (12-1), the planetary gear bearing oil inlet hole (12-2), the planetary gear planetary gear bearing clearance (15), the planetary gear radial oil hole (2-1) and the planetary gear floating gear ring clearance (16).

8. The compact oil circuit hydraulic system of the planetary gear transmission structure according to claim 7, characterized in that: The lubricating oil path for the gear surfaces of the front floating gear ring (3), the rear floating gear ring (4) and the outer gear ring wheel (5) is as follows: the main oil inlet hole (7-1), the front cover oil outlet hole (7-3), the vertical plate connecting oil hole (8-1), the vertical plate annular groove (8-3), the planetary gear bearing center hole (12-1), the planetary gear bearing oil inlet hole (12-2), the planetary gear planetary gear bearing gap (15), the planetary gear radial oil hole (2-1), the planetary gear floating gear ring gap (16), the front floating gear ring connecting oil hole (3-1) and the rear floating gear ring connecting oil hole (4-1), the front floating gear ring (3) and the rear floating gear ring (4) and the gear surfaces of the outer gear ring wheel (5).

9. The compact oil circuit hydraulic system of the planetary gear transmission structure according to claim 8, characterized in that: The lubricating oil path of the outer gear ring front bearing (13) is directed to: a total oil inlet hole (7-1), a front cover shell oil outlet hole (7-3), a vertical plate connecting oil hole (8-1), a vertical plate annular groove (8-3), a planetary gear bearing center hole (12-1), a planetary gear bearing connecting oil hole (12-3) and an outer gear ring front bearing oil inlet hole (10-3).

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