A self-lubricating internal gear hub

Abstract

This utility model belongs to the field of clutch transmission technology, and particularly relates to a self-lubricating internal gear hub. The hub body adopts a segmented design, consisting of several arc-shaped tooth segments spliced ​​end to end to form a ring structure. The number of arc-shaped tooth segments is flexibly set according to the clutch specifications. The connecting plate is integrally formed in the middle of the inner surface of each arc-shaped tooth segment. The connecting plate can enhance the overall strength of the arc-shaped tooth segments and prevent the arc-shaped tooth segments from deforming due to torque during clutch transmission. At the same time, it can also serve as a carrier for the self-lubricating structure to achieve long-term lubrication. The fixing plate is fixed at both ends of the inner surface of each arc-shaped tooth segment and is located on the upper and lower sides of the connecting plate. It is integrally formed with the arc-shaped tooth segments. The fixing plate has several fixing holes. The fixing plates of adjacent arc-shaped tooth segments are fastened with high-strength bolts and nuts to ensure that the hub body has no radial or axial movement after splicing. The assembly is simple, and the hub can be replaced if it is damaged.

Description

Technical Field

[0001] This utility model belongs to the field of clutch transmission technology, and in particular relates to a self-lubricating internal gear hub. Background Technology

[0002] In a clutch transmission system, the internal gear hub is the core component for power transmission. Its main function is to cooperate with other clutch components (such as planetary gears and splined shafts) to ensure stable power transmission or disconnection between the engine and the transmission. Currently, most clutch internal gear hubs are manufactured using integral forging or casting processes. During assembly, precise alignment with components such as the splined shaft and planetary carrier is required, resulting in low assembly efficiency. Furthermore, if the gear hub is damaged, the entire hub needs to be replaced. Utility Model Content

[0003] The purpose of this invention is to address the aforementioned technical problems by providing a self-lubricating internal gear hub, thereby resolving the issues raised in the background section.

[0004] In view of this, the present invention provides a self-lubricating internal gear hub, wherein the gear hub body is a ring structure composed of several arc-shaped tooth segments connected end to end; A connecting plate is fixedly connected to the middle of the inner surface of the arc-shaped tooth segment; The inner surface of the arc-shaped toothed segment is fixedly connected to the two ends of the fixed plate, and the fixed plate is located on the upper and lower sides of the connecting plate. The fixed plate has a fixing hole, and the fixed plates on two adjacent arc-shaped toothed segments are fixedly connected by bolts and nuts.

[0005] In the above technical solution, one end of the arc-shaped tooth segment is provided with an insertion part, and the other end is provided with a connecting part. Adjacent arc-shaped tooth segments are connected by the insertion part and the connecting part.

[0006] In the above technical solution, the insertion part further includes: The insert block is fixedly mounted on one end of the arc-shaped toothed segment; The connecting part includes: The slot is located at the other end of the curved tooth segment; The adjacent arc-shaped tooth segments are connected by insert blocks and slots.

[0007] In the above technical solution, the insertion part further includes: The splicing block is provided on one side of the end where the insertion block of the arc-shaped toothed segment is located; Connection holes are provided on the splicing blocks; The connecting part also includes: A splicing groove is provided on one side of the end where the slot of the arc-shaped tooth segment is located; The splicing blocks are adapted to the splicing grooves, and bolts pass through the connecting holes to achieve a fixed connection between the splicing blocks and the splicing grooves.

[0008] In the above technical solution, a lubrication ring groove is further provided on the connecting plate, and a number of circumferentially distributed lubrication straight grooves are provided on the connecting plate, which are connected to the lubrication ring groove.

[0009] Furthermore, in the above technical solution, both ends of the inner surface of the connecting plate are chamfered.

[0010] Furthermore, in the above technical solution, reinforcing ribs are fixedly provided on the fixing plate.

[0011] In the above technical solution, the fixing plate and the arc-shaped tooth segment are integrally formed.

[0012] The beneficial effects of this utility model are as follows: 1. The fixing plates of adjacent arc-shaped tooth segments are fastened with high-strength bolts and nuts to ensure that the tooth hub body has no radial and axial movement after splicing, which is suitable for the stability requirements of high-frequency power switching of the clutch. The assembly is simple and the tooth hub can be replaced if it is damaged.

[0013] 2. The lubrication ring groove is an annular groove, which is opened on the inner surface of the connecting plate on the side facing the clutch planetary gear. The groove is filled with high viscosity and high temperature resistant grease. Several circumferentially distributed lubrication straight grooves are opened on the connecting plate. The lubrication straight grooves are axial grooves. One end of the lubrication straight groove is connected to the lubrication ring groove, and the other end extends into the interior of the connecting plate to ensure the lubrication effect.

[0014] 3. Reinforcing ribs are fixedly installed on the fixing plate to enhance its structural strength. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is an exploded view of this utility model; Figure 3 This is a schematic diagram of the arc-shaped tooth segment structure of this utility model; The markings in the diagram are as follows: 1-arc-shaped tooth segment, 2-connecting plate, 3-fixing plate, 4-fixing hole, 5-insertion part, 6-connecting part, 7-insertion block, 8-slot, 9-splitting block, 10-connecting hole, 11-splitting groove, 12-lubricating ring groove, 13-lubricating straight groove, 14-reinforcing rib. Detailed Implementation

[0016] The technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application are within the scope of protection of this application.

[0017] Example 1:

[0018] This embodiment provides a self-lubricating internal gear hub, comprising: The gear hub body is a ring-shaped structure composed of several arc-shaped tooth segments 1 connected end to end. Connecting plate 2 is fixedly connected to the middle of the inner surface of arc-shaped tooth segment 1; The fixing plate 3 is fixedly connected to both ends of the inner surface of the arc-shaped tooth segment 1, and the fixing plate 3 is located on the upper and lower sides of the connecting plate 2. The fixing plate 3 is provided with fixing holes 4, and the fixing plates 3 on two adjacent arc-shaped tooth segments 1 are fixedly connected by bolts and nuts.

[0019] As can be seen from this embodiment, the gear hub body adopts a segmented design, which is composed of several arc-shaped gear segments 1 spliced ​​end to end to form a ring structure. The number of arc-shaped gear segments is flexibly set according to the clutch specifications (e.g., 2-3 segments for medium-sized car clutches, 4-6 segments for heavy-duty engineering machinery clutches). The arc of each arc-shaped gear segment is 360° / n (n is the number of segments). The outer tooth surface of the gear hub adopts an involute tooth profile with a module of 2-8mm (suitable for common clutch transmission torques), a pressure angle of 20°, and a tooth surface roughness Ra≤0.8μm to ensure precise meshing with the clutch planetary gears or spline shaft, reducing shifting impact. The arc-shaped tooth segment 1 is made of high-strength alloy structural steel (such as 20CrMnTi), and undergoes carburizing and quenching treatment (surface hardness HRC58-62, core hardness HRC30-35) to improve the wear resistance of the tooth surface and the overall impact resistance, adapting to the frequent shifting conditions of the clutch. The connecting plate 2 is integrally formed in the middle of the inner surface of each arc-shaped tooth segment 1, with a thickness of 8-15mm and a width equal to the axial length of the arc-shaped tooth segment 1. To (adapt to the clutch housing installation space), the connecting plate 2 enhances the overall strength of the arc-shaped tooth segment 1, preventing deformation of the arc-shaped tooth segment 1 due to torque during clutch transmission. It also serves as a carrier for the self-lubricating structure, achieving long-term lubrication. The fixing plate 3 is fixed to both ends of the inner surface of each arc-shaped tooth segment 1 and is located on the upper and lower sides of the connecting plate 2. It is integrally formed with the arc-shaped tooth segment 1. The fixing plate 3 has several fixing holes 4. The fixing plates 3 of adjacent arc-shaped tooth segments 1 are fastened with high-strength bolts and nuts to ensure that the tooth hub body has no radial or axial movement after splicing. It meets the stability requirements of high-frequency power switching of the clutch, is easy to assemble, and can replace parts of the tooth hub when damaged.

[0020] Example 2:

[0021] This embodiment provides a self-lubricating internal gear hub, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0022] An insertion part 5 is provided at one end of the arc-shaped tooth segment 1, and a connecting part 6 is provided at the other end. Adjacent arc-shaped tooth segments 1 are connected by the insertion part 5 and the connecting part 6.

[0023] As can be seen from this embodiment, one end of the arc-shaped tooth segment 1 is provided with an insertion part 5, and the other end is provided with a connecting part 6. Adjacent arc-shaped tooth segments 1 are connected by the insertion part 5 and the connecting part 6, and the connection is tight.

[0024] Example 3:

[0025] This embodiment provides a self-lubricating internal gear hub, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0026] Insertion part 5 includes: Insert 7 is fixedly mounted on one end of the arc-shaped toothed segment 1; Connecting part 6 includes: Slot 8 is located at the other end of the arc-shaped tooth segment 1; Among them, the adjacent arc-shaped tooth segments 1 are connected to the slots 8 through the insertion block 7.

[0027] As can be seen from this embodiment, the insertion part 5 includes a plug 7, which is an arc-shaped toothed segment structure fixed to the middle of one end of the arc-shaped toothed segment 1. The surface roughness Ra of the plug 7 is ≤1.6μm to avoid jamming during splicing. The connecting part 6 includes a groove 8, which is an arc-shaped groove opened in the middle of the other end face of the arc-shaped toothed segment 1. The depth and width of the groove 8 are completely consistent with the length and width of the plug 7 to ensure that the plug 7 is tightly embedded and to achieve radial positioning, thereby avoiding radial displacement of the toothed hub during clutch transmission.

[0028] Example 4:

[0029] This embodiment provides a self-lubricating internal gear hub, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0030] Insertion part 5 also includes: The splicing block 9 is provided on one side of the end where the insertion block 7 is located in the arc-shaped toothed segment 1; Connecting hole 10: Connecting hole 10 is provided on splicing block 9; The connecting part 6 also includes: The splicing groove 11 is provided on one side of the end where the slot 8 is located in the arc-shaped toothed segment 1; The splicing block 9 is adapted to the splicing groove 11, and the bolt passes through the connecting hole 10 to achieve a fixed connection between the splicing block 9 and the splicing groove 11.

[0031] As can be seen from this embodiment, the insertion part 5 also includes a splicing block 9. A splicing block 9 is provided on one side of the end where the insertion block 7 of the arc-shaped tooth segment 1 is located. A connecting hole 10 is provided on the splicing block 9. The connecting part 6 also includes a splicing groove 11. A splicing groove 11 is provided on one side of the end where the slot 8 of the arc-shaped tooth segment 1 is located. The splicing block 9 and the splicing groove 11 are adapted to each other. When splicing, the insertion block 7 and slot 8 of the adjacent arc-shaped tooth segment 1, and the splicing block 9 and splicing groove 11 are precisely matched. At the same time, the fixing plate 3 is attached. After the bolts are tightened, the radial runout at the splicing point is ≤0.05mm, which fully meets the coaxiality requirements of the clutch transmission and avoids impact noise caused by the splicing gap when shifting gears.

[0032] Example 5:

[0033] This embodiment provides a self-lubricating internal gear hub, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0034] The connecting plate 2 has a lubrication ring groove 12 and several circumferentially distributed lubrication straight grooves 13, which are connected to the lubrication ring groove 12.

[0035] As can be seen from this embodiment, the lubrication ring groove 12 is an annular groove, which is opened on the inner surface of the connecting plate 2 on the side facing the clutch planetary gear. The groove is filled with high viscosity and high temperature resistant grease. Several circumferentially distributed lubrication straight grooves 13 are opened on the connecting plate 2. The lubrication straight grooves 13 are axial grooves. One end of the lubrication straight groove 13 communicates with the lubrication ring groove 12, and the other end extends into the interior of the connecting plate 2 to ensure the lubrication effect.

[0036] Example 6:

[0037] This embodiment provides a self-lubricating internal gear hub, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0038] Both ends of the inner surface of the connecting plate 2 are chamfered.

[0039] As can be seen from this embodiment, both ends of the inner surface of the connecting plate 2 are chamfered.

[0040] Example 7:

[0041] This embodiment provides a self-lubricating internal gear hub, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0042] A reinforcing rib 14 is fixedly installed on the fixing plate 3.

[0043] As can be seen from this embodiment, the fixing plate 3 is fixedly provided with reinforcing ribs 14, which can enhance the structural strength of the fixing plate 3.

[0044] Example 8:

[0045] This embodiment provides a self-lubricating internal gear hub, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0046] The fixing plate 3 and the arc-shaped tooth segment 1 are integrally formed.

[0047] As can be seen from this embodiment, the fixing plate 3 and the arc-shaped tooth segment 1 are integrally formed, resulting in high structural strength and long service life.

[0048] The embodiments of this application have been described above with reference to the accompanying drawings. Unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other. This application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

Claims

1. A self-lubricating inner toothed hub, characterized in that, include: The tooth hub body is a ring structure composed of several arc-shaped tooth segments (1) connected end to end; Connecting plate (2), the middle part of the inner surface of the arc-shaped tooth segment (1) is fixedly connected to the connecting plate (2); Fixed plate (3), the inner surface of the arc-shaped tooth segment (1) is fixedly connected to both ends of the fixed plate (3), and the fixed plate (3) is located on the upper and lower sides of the connecting plate (2). Fixed holes (4) are opened on the fixed plate (3), and the fixed plates (3) on two adjacent arc-shaped tooth segments (1) are fixedly connected by bolts and nuts.

2. A self-lubricating inner gear hub according to claim 1, characterized in that One end of the arc-shaped tooth segment (1) is provided with an insertion part (5), and the other end is provided with a connecting part (6). Adjacent arc-shaped tooth segments (1) are connected by the insertion part (5) and the connecting part (6).

3. A self-lubricating inner gear hub according to claim 2, characterized in that The insertion part (5) includes: Insert (7), the insert (7) is fixedly disposed on one end of the arc-shaped toothed segment (1); The connecting part (6) includes: The slot (8) is located at the other end of the arc-shaped toothed segment (1); Among them, the adjacent arc-shaped tooth segments (1) are connected to the slots (8) through the insertion block (7).

4. A self-lubricating inner gear hub according to claim 3, characterized in that The insertion part (5) further includes: The splicing block (9) is provided on one side of the end where the insertion block (7) of the arc-shaped toothed segment (1) is located; Connection hole (10): The splicing block (9) is provided with a connection hole (10); The connecting part (6) further includes: A splicing groove (11) is provided on one side of the end where the slot (8) of the arc-shaped toothed segment (1) is located; The splicing block (9) is adapted to the splicing groove (11), and the bolt passes through the connecting hole (10) to realize the fixed connection between the splicing block (9) and the splicing groove (11).

5. The self-lubricating inner gear hub of claim 1, wherein, The connecting plate (2) is provided with a lubrication ring groove (12) and a number of circumferentially distributed lubrication straight grooves (13) are provided on the connecting plate (2), and the lubrication straight grooves (13) are connected to the lubrication ring grooves (12).

6. The self-lubricating inner gear hub of claim 1, wherein, Both ends of the inner surface of the connecting plate (2) are chamfered.

7. The self-lubricating inner gear hub of claim 1, wherein, A reinforcing rib (14) is fixedly installed on the fixing plate (3).

8. The self-lubricating inner gear hub of claim 1, wherein, The fixing plate (3) and the arc-shaped tooth segment (1) are integrally formed.

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