Lubricating oil passage structure and gear box

Abstract

The present application belongs to the technical field of gear box lubrication, and discloses a lubricating oil path structure and a gear box. The lubricating oil path structure comprises a sliding ring and a blocking ring. The sliding ring is detachably arranged on a first planet carrier. A first oil injection hole is formed in the sliding ring, and the first oil injection hole is in communication with an oil outlet hole of the first planet carrier. The blocking ring is detachably mounted on a second planet carrier. An installation hole is formed in the second planet carrier, and the blocking ring is installed in the installation hole. The blocking ring has a first lubricating oil path, which is in communication with the first oil injection hole and an oil inlet hole of the second planet carrier. The sliding ring is in rotational cooperation with the blocking ring. The blocking ring of the lubricating oil path structure is detachably installed on the second planet carrier. The sliding ring can be taken out from the annular installation hole by detaching the blocking ring. Therefore, the sliding ring can be overhauled and replaced without detaching the gear box by the operator, so that the replacement process is simplified and the replacement efficiency is improved.

Description

Technical Field

[0001] This invention relates to the field of gearbox lubrication technology, and more particularly to a lubrication circuit structure and a gearbox. Background Technology

[0002] Currently, lubrication between the first and second stage planetary carriers in a gearbox typically involves using a slip ring with oil holes located between them to transfer lubricating oil from the second stage carrier to the first stage carrier. From there, the oil is distributed to various lubrication points via oil passages within the first stage carrier. However, existing slip rings are mostly enclosed within the first stage carrier, making it impossible to observe their daily operation and usage. Furthermore, replacing a slip ring requires complete disassembly of the gearbox, causing significant inconvenience for routine maintenance and upkeep. Summary of the Invention

[0003] The purpose of this invention is to provide a lubrication circuit structure and gearbox that facilitates the inspection and replacement of slip rings.

[0004] To achieve this objective, the present invention adopts the following technical solution:

[0005] This invention provides a lubrication circuit structure, comprising:

[0006] A slip ring is detachably mounted on a first planetary carrier. The slip ring has a first oil injection hole, which is connected to the oil outlet hole of the first planetary carrier.

[0007] A retaining ring is detachably mounted on a second planetary carrier, the second planetary carrier having a mounting hole in which the retaining ring is installed; the retaining ring has a first lubrication oil passage, which connects to both the first oil injection hole and the oil inlet hole of the second planetary carrier; the slip ring is rotatably engaged with the retaining ring.

[0008] Preferably, the first planetary carrier includes a first mounting portion for mounting a slip ring, and the second planetary carrier includes a second mounting portion disposed opposite to the first mounting portion. The second mounting portion includes a first side surface and a second side surface disposed opposite to each other. The mounting hole passes through the first side surface and the second side surface. A retaining ring is mounted in the mounting hole along a first direction. When the retaining ring is not mounted in the mounting hole, the slip ring can be removed from the mounting hole in a direction opposite to the first direction.

[0009] As preferred, the slide ring comprises a first annular bottom plate mounted on the first mounting portion, and an outer ring wall and an inner ring wall spaced apart on the first annular bottom plate and extending towards the direction of the mounting hole, the first oil injection hole is uniformly arranged on the first annular bottom plate between the inner ring wall and the outer ring wall, the second lubricating oil path is formed between the inner ring wall and the outer ring wall, and the first oil injection hole is communicated with the first lubricating oil path through the second lubricating oil path.

[0010] As preferred, the slide ring comprises a first annular bottom plate mounted on the first mounting portion, and an outer ring wall and an inner ring wall spaced apart on the first annular bottom plate and extending towards the direction of the mounting hole, the first oil injection hole is uniformly arranged on the first annular bottom plate between the inner ring wall and the outer ring wall, the second lubricating oil path is formed between the inner ring wall and the outer ring wall, and the first oil injection hole is communicated with the first lubricating oil path through the second lubricating oil path.

[0011] As preferred, the mounting hole is recessed from the first side to form a first stop portion on the second mounting portion, the outer ring baffle has a first positioning portion, and the first positioning portion is abutted with the first stop portion and fixedly connected to the second planet carrier through bolts.

[0012] As preferred, the mounting hole is recessed from the second side to form a second stop portion on the second mounting portion, the inner ring baffle has a second positioning portion, and the second positioning portion is abutted with the second stop portion and fixedly connected to the second planet carrier through bolts.

[0013] As preferred, the first lubricating oil path comprises an axial section and a radial section which are communicated with each other, the axial section is communicated with the first oil injection hole of the slide ring, and the radial section is communicated with the oil inlet hole on the second planet carrier.

[0014] As preferred, the slide ring is provided with an observation hole penetrating the slide ring along the first direction, and the observation hole is communicated with the first lubricating oil path.

[0015] As preferred, the observation hole is provided with a detachable end cover away from the slide ring.

[0016] The gear box comprises the lubricating oil path structure.

[0017] The present application has the following advantages:

[0018] The lubricating oil path structure provided by the application has the advantages that the sliding ring is arranged on the first planet carrier, the first oil injection hole of the sliding ring is communicated with the oil hole of the first planet carrier, the first lubricating oil path of the blocking ring is communicated with the first oil injection hole and the oil hole of the second planet carrier, lubricating oil can be injected into the oil hole of the second planet carrier through the sliding ring and the blocking ring, and then the gears and bearings on the second planet carrier are lubricated; the blocking ring is detachably arranged on the mounting hole of the second planet carrier, and the sliding ring is also detachably connected with the first planet carrier, so that when the blocking ring or the sliding ring is worn, the sliding ring and the blocking ring can be repaired and replaced without the need of laboriously disassembling the gear box, thereby simplifying the replacement process and improving the replacement efficiency.

[0019] The gear box provided by the application has the advantages that the lubricating oil path structure is adopted to lubricate the gears and bearings on the second planet carrier in the gear box, the sliding ring in the gear box can be repaired and replaced without disassembling the gear box body, time and labor are saved, and the operator is greatly facilitated. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 is a sectional view of the lubricating oil path structure provided by the embodiment of the application;

[0021] Figure 2 is Figure 1 A-A sectional view in

[0022] in the drawings:

[0023] 101-oil outlet hole; 102-first mounting part;

[0024] 201-oil inlet hole; 202-second mounting part; 2021-first blocking part; 2022-second blocking part;

[0025] 1-sliding ring; 11-first oil injection hole; 12-first annular bottom plate; 13-outer ring wall; 14-inner ring wall; 15-second lubricating oil path;

[0026] 2-blocking ring; 21-first lubricating oil path; 23-end cover; 24-second annular bottom plate; 25-inner ring blocking plate; 251-second positioning part; 26-outer ring blocking plate; 261-first positioning part. DETAILED DESCRIPTION

[0027] The application will be further described in detail below in combination with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the application, but not to limit the application. In addition, it should be noted that only the parts related to the application are shown in the drawings for the convenience of description, but not all the structures.

[0028] In the description of the present application, unless otherwise explicitly specified and limited, the terms "connected", "connected", "fixed" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0029] In the present application, unless otherwise explicitly specified and limited, "on" or "under" the first feature of the second feature can include that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, the first feature "on", "above" and "above" the second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature includes that the first feature is directly below and obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0030] In the description of the present embodiment, the terms "up", "down", "right", "left" and other orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first" and "second" are only used to distinguish in description and have no special meaning.

[0031] As Figure 1 As shown in the figure, the present application provides a lubricating oil path structure, which comprises a slip ring 1 and a blocking ring 2, the slip ring 1 is detachably arranged on a first planet carrier, a first oil injection hole 11 is formed on the slip ring 1, and the first oil injection hole 11 is in communication with an oil outlet hole 101 of the first planet carrier. In the present embodiment, since the slip ring 1 is arranged on the first planet carrier and the first oil injection hole 11 of the slip ring 1 is in communication with the oil outlet hole 101 of the first planet carrier, one end of the first lubricating oil path 21 in the blocking ring 2 is in communication with the first oil injection hole 11, and the other end is in communication with an oil inlet hole 201 of a second planet carrier, so that the lubricating oil can be injected into the oil inlet hole 201 of the second planet carrier through the slip ring 1 and the blocking ring 2, and then the lubrication of the gears and bearings on the second planet carrier is realized.

[0032] The blocking ring 2 is detachably mounted on the second carrier, the second carrier is provided with a mounting hole, and the blocking ring 2 is mounted in the mounting hole; the blocking ring 2 is provided with a first lubricating oil path 21, the first lubricating oil path 21 is in communication with the first oil injection hole 11 and an oil inlet hole 201 of the second carrier, and the sliding ring 1 is in rotational cooperation with the blocking ring 2. In the embodiment, the mounting hole is annular, the thickness of the sliding ring 1 is smaller than the width of the mounting hole, the blocking ring 2 is detachably mounted in the mounting hole and matched with the mounting hole, the blocking ring 2 is provided with the first lubricating oil path 21, one end of the first lubricating oil path 21 is in communication with the first oil injection hole 11, and the other end of the first lubricating oil path 21 is in communication with the oil inlet hole 201 of the second carrier, and the sliding ring 1 is in rotational cooperation with the blocking ring 2. In the embodiment, since the blocking ring 2 is detachably mounted on the mounting hole of the second carrier, the sliding ring 1 is also detachably connected with the first carrier, so that when the blocking ring 2 or the sliding ring 1 is worn, the sliding ring 1 and the blocking ring 2 can be repaired and replaced without the labor of the operator disassembling the gear box, thereby simplifying the replacement process and improving the replacement efficiency. As shown in Figure 1 , the lubricating oil path structure takes the horizontal dot-dash line in the middle of the figure as the axis of symmetry, and the blocking ring 2 and the sliding ring 1 are both annular structures.

[0033] Further, as shown in Figure 1 , the first carrier includes a first mounting portion 102 for mounting the sliding ring 1, the second carrier includes a second mounting portion 202 opposite to the first mounting portion 102, the second mounting portion 202 includes a first side surface and a second side surface opposite to each other, the mounting hole penetrates through the first side surface and the second side surface, and the blocking ring 2 is mounted in the mounting hole along a first direction, and when the blocking ring 2 is not mounted in the mounting hole, the sliding ring 1 can be taken out of the mounting hole along a direction opposite to the first direction. In the embodiment, the second mounting portion 202 of the second carrier is provided with an annular mounting hole, the width of the mounting hole is greater than the thickness of the sliding ring 1, when the sliding ring 1 needs to be repaired or replaced, the operator detaches the blocking ring 2 from the mounting hole, and then the sliding ring 1 can be taken out of the mounting hole along a direction opposite to the first direction, so that the operation is convenient and time-saving and labor-saving.

[0034] Further, as shown in Figure 1 and Figure 2As shown, the slip ring 1 comprises a first annular bottom plate 12 mounted on the first mounting portion 102, and an outer ring wall 13 and an inner ring wall 14 which are arranged on the first annular bottom plate 12 and extend towards the direction of the mounting hole, the first oil injection hole 11 is uniformly arranged on the first annular bottom plate 12 between the inner ring wall 14 and the outer ring wall 13, the second lubricating oil path 15 is formed between the inner ring wall 14 and the outer ring wall 13, and the first oil injection hole 11 is communicated with the first lubricating oil path 21 through the second lubricating oil path 15. In this embodiment, the first annular bottom plate 12 of the slip ring 1 is connected between the outer ring wall 13 and the inner ring wall 14, the outer ring wall 13 and the inner ring wall 14 are both mounted towards the direction of the mounting hole, i.e. the direction opposite to the first direction, and the first annular bottom plate 12 is uniformly provided with a plurality of first oil injection holes 11, the lubricating oil flows into the second lubricating oil path 15 from the first oil injection hole 11, the second lubricating oil path 15 is an annular groove surrounded by the outer ring wall 13, the inner ring wall 14 and the first annular bottom plate 12, and can temporarily store the lubricating oil, and in the process of rotating the slip ring 1, the lubricating oil can be uniformly distributed to the plurality of first lubricating oil paths 21 of the blocking ring 2 through the second lubricating oil path 15, so that the plurality of planet gears on the second planet carrier can be uniformly lubricated. The width between the inner circumferential surface of the inner ring wall 14 and the outer circumferential surface of the outer ring wall 13 is the thickness of the slip ring 1.

[0035] Specifically, as Figure 1 and Figure 2As shown, the blocking ring 2 includes a second annular bottom plate 24 mounted on the second mounting portion 202, and an inner ring blocking plate 25 and an outer ring blocking plate 26 arranged on the second annular bottom plate 24 and extending in the first direction, the inner ring blocking plate 25 and the outer ring blocking plate 26 form an annular groove on the side of the second annular bottom plate 24 close to the sliding ring 1, the sliding ring 1 is embedded in the annular groove, the inner circumferential surface of the outer ring blocking plate 26 abuts against the outer circumferential surface of the outer ring wall 13, and the outer circumferential surface of the inner ring blocking plate 25 abuts against the inner circumferential surface of the inner ring wall 14, the second annular bottom plate 24 between the inner ring blocking plate 25 and the outer ring blocking plate 26 is uniformly provided with second oil injection holes, and the first lubricating oil path 21 communicates with the second lubricating oil path 15 through the second oil injection holes. In this embodiment, the structure of the blocking ring 2 is similar to that of the sliding ring 1, the inner ring blocking plate 25 and the outer ring blocking plate 26 are arranged on the second annular bottom plate 24 in the first direction, thereby forming an annular groove on one side of the second annular bottom plate 24, and the sliding ring 1 is embedded in the annular groove, wherein the outer circumferential surface of the inner ring blocking plate 25 is rotationally fitted with the inner circumferential surface of the inner ring wall 14, and the inner circumferential surface of the outer ring blocking plate 26 is rotationally fitted with the outer circumferential surface of the outer ring wall 13, so that the sliding ring 1 and the blocking ring 2 can be closely abutted and relatively rotated, avoiding leakage of lubricating oil from the joint between the sliding ring 1 and the blocking ring 2; the second annular bottom plate 24 is uniformly provided with a plurality of second oil injection holes, so as to ensure that the lubricating oil can uniformly flow from the second annular bottom plate 24 into the first lubricating oil path 21 and uniformly lubricate the plurality of planet gears on the second planet carrier; specifically, the blocking ring 2 is an integral overall structure, which can better avoid leakage of lubricating oil and at the same time improve the overall strength of the blocking ring 2. The distance between the inner circumferential surface of the outer ring blocking plate 26 and the outer circumferential surface of the inner ring blocking plate 25 is the width of the mounting hole.

[0036] Specifically, as shown in the figure, Figure 1 the mounting hole is recessed from the first side surface to form a first blocking portion 2021 on the second mounting portion 202, the outer ring blocking plate 26 has a first positioning portion 261, the first positioning portion 261 abuts against the first blocking portion 2021 and is fixedly connected to the second planet carrier by bolts. In this embodiment, the first blocking portion 2021 is a groove structure on the first side surface, and the first positioning portion 261 is embedded in the first blocking portion 2021 and fixed on the second planet carrier by bolts, which can further improve the stability of the connection between the blocking ring 2 and the second planet carrier, and at the same time facilitate the disassembly and installation of the operator.

[0037] Specifically, as shown in the figure, Figure 1As shown, the mounting hole is recessed from the second side to form a second resisting portion 2022 on the second mounting portion 202, and the inner ring baffle 25 has a second positioning portion 251 which abuts against the second resisting portion 2022 and is fixedly connected to the second carrier by bolts. In this embodiment, the second resisting portion 2022 is a groove structure on the second side, the structure of the second resisting portion 2022 is the same as the second resisting portion 2022, the second positioning portion 251 is embedded in the second resisting portion 2022 and fixed on the second carrier by bolts, which can further improve the stability of the connection between the baffle ring 2 and the second carrier, and facilitate the disassembly and installation of the operator.

[0038] Further, as shown in Figure 1 The first lubricating oil path 21 includes an axial section and a radial section which are in communication with each other, the axial section is in communication with the first oil injection hole 11 of the sliding ring 1, and the radial section is in communication with the oil inlet hole 201 on the second carrier. In this embodiment, the axial section and the radial section are connected perpendicularly to form the first lubricating oil path 21 of the baffle ring 2 for circulating lubricating oil; wherein the axial section is opened in the first direction, and the radial section is opened perpendicular to the axial section, thereby facilitating the processing and manufacturing of the first lubricating oil path 21.

[0039] Further, the baffle ring 2 is provided with an observation hole which penetrates the baffle ring 2 in the first direction, and the observation hole is in communication with the first lubricating oil path 21. In this embodiment, when lubricating, the lubricating oil flows from the oil outlet hole 101 of the first carrier into the first oil injection hole 11 of the sliding ring 1, and then flows into the oil inlet hole 201 of the second carrier through the axial section and the radial section in turn, thereby completing the lubrication; the observation hole is opened on the baffle ring 2 in the first direction and in communication with the axial section of the first lubricating oil path 21, so that the operator can directly see the wear condition of the internal sliding ring 1 through the observation hole, and the working condition of the sliding ring 1 can be observed without disassembling the lubricating oil path structure, saving time and effort.

[0040] Specifically, as shown in Figure 1 The side of the observation hole away from the sliding ring 1 is provided with a detachable end cover 23. In this embodiment, the end cover 23 has a head portion and a rod portion, an outer thread is formed on the rod portion, and an inner thread is formed on the inner wall of the observation hole, so that the end cover 23 is threadedly connected with the observation hole; the end cover 23 can prevent foreign matter or dust from entering the first lubricating oil path 21, ensure the lubricating effect of the lubricating oil path structure on the second carrier, and prevent the sliding ring 1 from being worn and prolong the service life of the sliding ring 1.

[0041] When the slip ring 1 needs to be replaced, the bolts between the blocking ring 2 and the second carrier are disassembled, the bolts for fixing the slip ring 1 are disassembled from the mounting hole, so that the slip ring 1 is disassembled from the first carrier, and the slip ring 1 is directly taken out from the mounting hole. In the embodiment, the slip ring 1 is made of nylon, which has high strength and good wear resistance. When the second carrier is offset under a large load, the slip ring 1 made of nylon can effectively prevent wear with the blocking ring 2, thereby prolonging the service life of the lubricating oil path structure.

[0042] The embodiment also provides a gear box comprising the lubricating oil path structure. The gear box can realize lubrication of the second carrier, and the slip ring 1 can be conveniently taken out for maintenance and replacement, thereby simplifying the replacement process of the slip ring 1 and improving the replacement efficiency.

[0043] Obviously, the above embodiments of the present application are only examples for clearly illustrating the present application, and are not intended to limit the implementation modes of the present application. For those skilled in the art, various obvious changes, readjustments and replacements can be made without departing from the protection scope of the present application. It is unnecessary and impossible to enumerate all the implementation modes. Any modification, equivalent replacement and improvement within the spirit and principle of the present application shall be included in the protection scope of the claims of the present application.

Claims

1. A lubricating oil passage structure characterized by comprising: The application relates to a lubricating device for a planetary gear, comprising: a sliding ring (1) which is detachably arranged on a first planetary carrier, wherein a first oil injection hole (11) is formed in the sliding ring (1) and is in communication with an oil outlet hole (101) of the first planetary carrier; a blocking ring (2) which is detachably arranged on a second planetary carrier, wherein an installation hole is formed in the second planetary carrier, and the blocking ring (2) is arranged in the installation hole; the blocking ring (2) has a first lubricating oil path (21) which is in communication with the first oil injection hole (11) and an oil inlet hole (201) of the second planetary carrier; the sliding ring (1) is rotationally connected with the blocking ring (2); the first planetary carrier comprises a first installation part (102) for installing the sliding ring (1), the second planetary carrier comprises a second installation part (202) which is oppositely arranged with the first installation part (102), the second installation part (202) comprises oppositely arranged first and second side faces, the installation hole penetrates through the first and second side faces, and the blocking ring (2) is arranged in the installation hole along a first direction; when the blocking ring (2) is not arranged in the installation hole, the sliding ring (1) can be taken out from the installation hole along a direction opposite to the first direction; the sliding ring (1) comprises a first annular bottom plate (12) which is arranged on the first installation part (102), and an outer ring wall (13) and an inner ring wall (14) which are arranged on the first annular bottom plate (12) and extend towards the installation hole; the first oil injection hole (11) is uniformly formed on the first annular bottom plate (12) between the inner ring wall (14) and the outer ring wall (13), a second lubricating oil path (15) is formed between the inner ring wall (14) and the outer ring wall (13), and the first oil injection hole (11) is in communication with the first lubricating oil path (21) through the second lubricating oil path (15); the first lubricating oil path (21) comprises an axial section and a radial section which are in communication with each other, the axial section is in communication with the first oil injection hole (11) of the sliding ring (1), and the radial section is in communication with the oil inlet hole (201) of the second planetary carrier.

2. The lubricating oil passage structure according to claim 1, characterized by the blocking ring (2) comprises a second annular bottom plate (24) which is arranged on the second installation part (202), and an inner ring blocking plate (25) and an outer ring blocking plate (26) which are arranged on the second annular bottom plate (24) and extend along the first direction; the inner ring blocking plate (25) and the outer ring blocking plate (26) form an annular groove on one side of the second annular bottom plate (24) which is close to the sliding ring (1), the sliding ring (1) is embedded in the annular groove, an inner circumferential surface of the outer ring blocking plate (26) is abutted against an outer circumferential surface of the outer ring wall (13), an outer circumferential surface of the inner ring blocking plate (25) is abutted against an inner circumferential surface of the inner ring wall (14), and second oil injection holes are uniformly formed on the second annular bottom plate (24) between the inner ring blocking plate (25) and the outer ring blocking plate (26); the first lubricating oil path (21) is in communication with the second lubricating oil path (15) through the second oil injection holes.

3. The lubricating oil passage structure according to claim 2, characterized by The mounting hole is recessed from the first side to form a first resisting portion (2021) on the second mounting portion (202), the outer ring baffle (26) has a first positioning portion (261) which abuts against the first resisting portion (2021) and is fixedly connected to the second carrier by bolts.

4. The lubricating oil passage structure according to claim 3, characterized by The mounting hole is recessed from the second side to form a second resisting portion (2022) on the second mounting portion (202), the inner ring baffle (25) has a second positioning portion (251) which abuts against the second resisting portion (2022) and is fixedly connected to the second carrier by bolts.

5. The lubricating oil passage structure according to any one of claims 1 to 4, characterized by The baffle ring (2) is provided with an observation hole penetrating the baffle ring in the first direction, and the observation hole is in communication with the first lubricating oil path (21).

6. The lubricating oil passage structure according to claim 5, characterized by A detachable end cover (23) is arranged on the side of the observation hole away from the slip ring (1).

7. A gear box characterised by, The lubricating oil path structure comprises the slip ring (1) and the baffle ring (2). The lubricating oil path structure comprises the slip ring (1) and the baffle ring (2).

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