Wear-resistant sun gear

Abstract

The utility model discloses a wear-resistant sun gear which comprises a rim and a mounting ring, a plurality of groups of gear teeth are arranged on the outer side of the mounting ring, a connecting assembly is arranged on the inner side of the mounting ring, a clamping groove is formed in the top of the rim, two groups of positioning grooves are formed in the bottom of the clamping groove, and a fixing screw is arranged on the connecting assembly. A through hole is formed in the top of the rim and penetrates through the bottom of the rim, a first reinforcing plate and a second reinforcing plate are arranged in the through hole, the two sets of positioning grooves are matched with the two sets of positioning rods respectively, and the two sets of positioning rods are clamped in the two sets of positioning rods respectively. Through the arrangement of the mounting ring, the connecting assembly, the clamping groove, the positioning groove, the fixing screw, the through hole, the first reinforcing plate and the second reinforcing plate, only the mounting ring provided with the gear teeth needs to be replaced when the gear teeth of equipment are abraded to a certain degree, the whole equipment does not need to be replaced, the maintenance cost can be reduced, and the maintenance efficiency is improved. And the overall weight of the equipment can be reduced while the overall strength of the equipment is ensured, and the manufacturing raw material cost of the equipment is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of sun gears, and specifically relates to a wear-resistant sun gear. Background Technique

[0002] One of the main parameters of the transmission performance is the planetary gear mechanism. In planetary gear transmission, the external gear on the same axis as the planet carrier is called the sun gear. The sun gear outputs power and transmits the power to the planet gears meshing around it.

[0003] The prior art has the following deficiencies: In the prior art, in the "a high-precision wear-resistant sun gear" with the application number 201621156937.9, it includes "a rim, external gear teeth connected to the rim, internal gear teeth connected to the rim, the external gear teeth and the internal gear teeth form a common end face, and the end face and the external gear teeth are arc-connected".

[0004] By setting the external gear teeth, internal gear teeth, arcs, etc., the above-mentioned device has high fitting accuracy, small wear during normal use, and enhanced service life. During the use of the above-mentioned device, since the gear teeth often mesh with other planet gears to transmit power, the gear teeth are most likely to be worn. After the gear teeth of the device are worn to a certain extent, the entire sun gear often needs to be replaced, resulting in a high maintenance cost. In addition, in order to ensure the overall strength of the device, the above-mentioned device is usually set as a solid body, making the entire sun gear heavier and the manufacturing raw material cost higher. Content of the Utility Model

[0005] The purpose of the utility model is to provide a wear-resistant sun gear to solve the problems raised in the above background technique.

[0006] To achieve the above purpose, the utility model provides the following technical solution: A wear-resistant sun gear includes a rim and a mounting ring. A plurality of groups of gear teeth are arranged on the outer side of the mounting ring, a connecting component is arranged on the inner side of the mounting ring, a card slot is opened at the top of the rim, two groups of positioning slots are opened at the bottom of the card slot, a fixing screw is arranged on the connecting component, a through hole is opened at the top of the rim and penetrates through the bottom, and a first reinforcing plate and a second reinforcing plate are arranged in the through hole.

[0007] The connecting component includes a connecting block, a positioning rod and a threaded hole. A connecting block is arranged on the inner side of the mounting ring, a positioning rod is arranged at the bottom of the connecting block, and threaded holes are opened on both the connecting block and the inner wall bottom of the card slot.

[0008] As a preferred technical solution of the utility model, the mounting ring and a plurality of groups of gear teeth form an integral body, and a wear-resistant coating is applied to the outer side of the gear teeth. The connecting block is fixedly installed at a position near the top on the inner side of the mounting ring.

[0009] As a preferred technical solution of the present utility model, the inner diameter of the mounting ring is the same as the diameter of the wheel rim, and the card slot is adapted to the connecting block.

[0010] As a preferred technical solution of the present utility model, the mounting ring is sleeved on the wheel rim and the connecting block is clamped in the card slot, and positioning rods are fixedly installed at both ends of the bottom of the connecting block.

[0011] As a preferred technical solution of the present utility model, the two positioning slots are respectively adapted to the two positioning rods, and the two positioning rods are respectively clamped in the two positioning rods.

[0012] As a preferred technical solution of the present utility model, the threaded hole is adapted to the fixing screw. The installation end of the fixing screw passes through the threaded hole on the connecting block and is threadedly connected to the threaded hole on the card slot, and the limiting end of the fixing screw is still located within the connecting block. The connecting components and the card slots are respectively provided with a plurality of groups and the numbers of both are the same.

[0013] As a preferred technical solution of the present utility model, the first reinforcing plate and the second reinforcing plate are arranged alternately and form a whole. The whole formed by the first reinforcing plate and the second reinforcing plate is fixedly installed in the through hole, and four triangular spaces are formed between this whole and the through hole. There are a plurality of groups of the through holes.

[0014] Compared with the prior art, the present utility model provides a wear-resistant sun gear, which has the following beneficial effects:

[0015] 1. For this wear-resistant sun gear, when the teeth need to be replaced after wearing to a certain extent in the later stage, the fixing screw is removed, the mounting ring is moved upward to disengage the mounting ring from the wheel rim, and a new mounting ring with teeth is sleeved on the wheel rim so that the connecting block is clamped in the card slot and the positioning rod is clamped in the positioning slot. The fixing screw is used to fix between the connecting block and the card slot, and the overall replacement of the teeth can be completed. The overall disassembly and assembly of the mounting ring with teeth is relatively convenient. With this structure, when the teeth of the equipment wear to a certain extent, only the mounting ring with teeth needs to be replaced, and there is no need to replace the entire sun gear, which can reduce the maintenance cost;

[0016] 2. For this wear-resistant sun gear, through the design of the through hole, the first reinforcing plate and the second reinforcing plate, the design of the through hole can reduce the consumption of the manufacturing raw materials of the wheel rim and reduce the overall weight of the wheel rim. The combination of the first reinforcing plate and the second reinforcing plate can improve the support strength of the through hole, and further can reduce the overall weight of the equipment and the manufacturing raw material cost of the equipment while ensuring the overall strength of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the present utility model;

[0018] Figure 2 This is a three-dimensional external view schematic diagram of the first reinforcing plate and the second reinforcing plate of the present utility model;

[0019] Figure 3 This is a schematic structural diagram of the mounting ring of the present utility model;

[0020] Figure 4 This is a schematic structural diagram of the wheel rim of the present utility model.

[0021] In the figure: 1, wheel rim; 2, mounting ring; 3, teeth; 4, connecting component; 401, connecting block; 402, positioning rod; 403, threaded hole; 5, card slot; 6, positioning slot; 7, fixing screw; 8, through hole; 9, first reinforcing plate; 10, second reinforcing plate. Specific embodiments

[0022] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

[0023] Please refer to Figures 1-4 , in this implementation scheme: a wear-resistant sun gear includes a wheel rim 1 and a mounting ring 2. A plurality of groups of teeth 3 are arranged on the outer side of the mounting ring 2, and a connecting component 4 is arranged on the inner side of the mounting ring 2. The connecting component 4 can facilitate the connection between the mounting ring 2 and the wheel rim 1. A card slot 5 is opened at the top of the wheel rim 1, and two groups of positioning slots 6 are opened at the bottom of the card slot 5. A fixing screw 7 is arranged on the connecting component 4. A through hole 8 is opened at the top of the wheel rim 1 and penetrates through the bottom. The through hole 8 can reduce the material consumption of the wheel rim 1. A first reinforcing plate 9 and a second reinforcing plate 10 are arranged in the through hole 8;

[0024] The connecting component 4 includes a connecting block 401, a positioning rod 402, and a threaded hole 403. A connecting block 401 is arranged on the inner side of the mounting ring 2. The connecting block 401 can facilitate the connection between the mounting ring 2 and the wheel rim 1. A positioning rod 402 is arranged at the bottom of the connecting block 401, and threaded holes 403 are opened on both the connecting block 401 and the inner wall bottom of the card slot 5.

[0025] In this embodiment, the mounting ring 2 and a plurality of groups of teeth 3 form an integral body, and a wear-resistant coating is applied to the outer side of the teeth 3. The connecting block 401 is fixedly installed at a position near the top on the inner side of the mounting ring 2;

[0026] Specifically, the mounting ring 2 can facilitate the installation of the teeth 3;

[0027] In this embodiment, the inner diameter of the mounting ring 2 is the same as the diameter of the rim 1, and the card slot 5 is adapted to the connecting block 401;

[0028] Specifically, the card slot 5 facilitates the connection between the connecting block 401 and the rim 1;

[0029] In this embodiment, the mounting ring 2 is sleeved on the rim 1 and the connecting block 401 is clamped in the card slot 5. Positioning rods 402 are fixedly installed at both ends of the bottom of the connecting block 401;

[0030] Specifically, the positioning rods 402 facilitate the preliminary fixation between the connecting block 401 and the card slot 5;

[0031] In this embodiment, the two groups of positioning slots 6 are respectively adapted to the two groups of positioning rods 402, and the two groups of positioning rods 402 are respectively clamped in the two groups of positioning rods 402;

[0032] Specifically, the positioning slot 6 facilitates the connection between the positioning rod 402 and the card slot 5;

[0033] In this embodiment, the threaded holes 403 are adapted to the fixing screws 7. The installation end of the fixing screw 7 passes through the threaded hole 403 on the connecting block 401 and is threadedly connected to the threaded hole 403 on the card slot 5, and the limiting end of the fixing screw 7 is still located within the connecting block 401. The connecting components 4 and the card slots 5 are respectively provided with several groups and the numbers of the two are the same;

[0034] Specifically, the combination of the threaded holes 403 and the fixing screws 7 facilitates the further fixation between the connecting block 401 and the card slot 5;

[0035] In this embodiment, the first reinforcing plate 9 and the second reinforcing plate 10 are arranged alternately and the two form a whole. The whole formed by the first reinforcing plate 9 and the second reinforcing plate 10 is fixedly installed in the through hole 8, and four triangular spaces are formed between this whole and the through hole 8. There are several groups of through holes 8;

[0036] Specifically, the combination of the first reinforcing plate 9 and the second reinforcing plate 10 can improve the support strength of the through hole 8.

[0037] Working principle and usage process of the present utility model: The sun gear is integrally installed in a suitable position. The wear-resistant coating applied on the outer side of the gear teeth 3 can improve the wear resistance of the gear teeth 3, thereby enabling the overall sun gear to have better wear resistance. When the gear teeth 3 are worn to a certain extent and need to be replaced later, several groups of fixing screws 7 are removed, and the mounting ring 2 is moved upward to disengage the mounting ring 2 from the wheel rim 1. A new mounting ring 2 with the gear teeth 3 installed is sleeved on the wheel rim 1 so that each group of connecting blocks 401 is snapped into the corresponding card slots 5 and the positioning rods 402 are snapped into the positioning grooves 6. The positioning rods 402 combined with the positioning grooves 6 can facilitate the preliminary fixation between the connecting blocks 401 and the card slots 5. Further fixation is performed on the connecting blocks 401 and the card slots 5 through the fixing screws 7, and the overall replacement of the gear teeth 3 can be completed. The overall disassembly and assembly of the mounting ring 2 with the gear teeth 3 installed are relatively convenient. Moreover, when the mounting ring 2 is fixed, the limiting end of the fixing screw 7 is still located within the connecting block 401 and will not protrude, which can ensure the smoothness of the top of the wheel rim 1. This structure enables the equipment to only replace the mounting ring 2 with the gear teeth 3 installed when the gear teeth 3 of the equipment are worn to a certain extent, without the need to replace the entire sun gear, which can reduce the maintenance cost;

[0038] The design of the through hole 8 can reduce the consumption of manufacturing raw materials of the wheel rim 1 and reduce the overall weight of the wheel rim 1. Since the overall formed by the first reinforcing plate 9 and the second reinforcing plate 10 is fixedly installed in the through hole 8 and four triangular spaces are formed between this overall and the through hole 8, according to the principle of the stability of triangles, the first reinforcing plate 9 combined with the second reinforcing plate 10 can improve the support strength of the through hole 8, thereby reducing the overall weight of the equipment and the manufacturing raw material cost of the equipment while ensuring the overall strength of the equipment.

[0039] Finally, it should be noted that the above are only the preferred embodiments of the present utility model and are not used to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A wear-resistant sun gear, comprising a wheel rim (1) and a mounting ring (2), wherein a plurality of groups of gear teeth (3) are arranged on the outer side of the mounting ring (2), characterized in that: A connecting assembly (4) is arranged on the inner side of the mounting ring (2); a slot (5) is arranged on the top of the wheel rim (1); two groups of positioning slots (6) are arranged on the bottom of the slot (5); a fixing screw (7) is arranged on the connecting assembly (4); a through hole (8) is arranged on the top of the wheel rim (1) and passes through the bottom; a first reinforcing plate (9) and a second reinforcing plate (10) are arranged in the through hole (8); The connection assembly (4) comprises a connection block (401), a positioning rod (402) and a threaded hole (403); the connection block (401) is arranged on the inner side of the mounting ring (2); the positioning rod (402) is arranged on the bottom of the connection block (401); and threaded holes (403) are provided on the connection block (401) and on the bottom of the inner wall of the slot (5).

2. The wear-resistant sun gear according to claim 1, characterized in that: The mounting ring (2) and the plurality of groups of gear teeth (3) form a whole, and the outer sides of the gear teeth (3) are coated with a wear-resistant coating. The connecting block (401) is fixedly mounted on the inner side of the mounting ring (2) near the top.

3. The wear-resistant sun gear according to claim 1, characterized in that: The inner diameter of the mounting ring (2) is the same as the diameter of the wheel rim (1), and the clamping groove (5) is matched with the connecting block (401).

4. The wear-resistant sun gear according to claim 1, characterized in that: The mounting ring (2) is sleeved on the wheel rim (1) and the connecting block (401) is clamped on the clamping groove (5). Positioning rods (402) are fixedly mounted on both ends of the bottom of the connecting block (401).

5. The wear-resistant sun gear according to claim 1, characterized in that: The two groups of positioning grooves (6) are respectively matched with the two groups of positioning rods (402), and the two groups of positioning rods (402) are respectively clamped in the two groups of positioning rods (402).

6. The wear-resistant sun gear according to claim 1, characterized in that: The threaded hole (403) is matched with the fixing screw (7); the mounting end of the fixing screw (7) passes through the threaded hole (403) on the connecting block (401) and is then threadedly connected to the threaded hole (403) on the slot (5); and the limiting end of the fixing screw (7) is still located in the connecting block (401); and the connecting assembly (4) and the slot (5) are respectively provided with a plurality of groups, and the number of the two groups is the same.

7. The wear-resistant sun gear according to claim 1, characterized in that: The first reinforcing plate (9) and the second reinforcing plate (10) are arranged alternately and form a whole. The whole formed by the first reinforcing plate (9) and the second reinforcing plate (10) is fixedly installed in the through hole (8) and four groups of triangular spaces are formed between the whole and the through hole (8). There are a total of several groups of through holes (8).

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