Iron-based powder metallurgy duplicate gear with reinforcing structure

Abstract

The utility model belongs to the technical field of gears, and particularly relates to an iron-based powder metallurgy duplicate gear with a reinforcing structure, which comprises a first gear, a second gear fixedly mounted on the first gear, a lightening hole formed in the first gear, a shaft hole formed in the second gear and a sealing groove formed in the second gear. A supporting reinforcing shaft sleeve is fixedly installed in the shaft hole. According to the wear-resistant and corrosion-resistant gear, the wear-resistant and corrosion-resistant layer is arranged on the upper surface of the gear and made of the chromium carbide material, and meanwhile, the titanium carbide coating is arranged on the upper surface of the wear-resistant and corrosion-resistant layer, so that the wear-resistant and corrosion-resistant performance of the whole structure of the wear-resistant and corrosion-resistant gear can be effectively improved; the overall bending resistance and shearing resistance can be improved, so that the structural strength is improved, and better work and use are facilitated; the lightening holes are formed in the first gear, so that the overall weight of the first gear can be reduced, power loss can be reduced, and meanwhile, the running speed and efficiency of the gear can be improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to gear technical field, concretely is a kind of iron-based powder metallurgy duplex gear with reinforcing structure. BACKGROUND

[0002] Gear and its gear product are important basic parts of mechanical equipment, and the main transmission components of most mechanical complete equipment are gear transmission. Gear transmission is the most widely used mechanical transmission in modern mechanical products. This is because it can ensure constant transmission ratio, has the advantages of large transmission power range, high efficiency, long service life and the like. Duplex gear is two gears connected into one. This duplex gear is called slip gear in gear train (transmission), and its function is to change the rotational speed or speed of output shaft, mainly used in machine tool speed reducer spindle box, automobile transmission and other related mechanical fields. Powder metallurgy technology can produce components with high dimensional accuracy and complex shape in a shape very similar to the product shape, which can greatly reduce the cutting cost. Therefore, powder metallurgy products are used in various mechanical devices as components in many aspects.

[0003] The prior art has the following disadvantages: the prior art discloses a powder metallurgy duplex gear with the publication number CN201921042901.1, which comprises a first gear and a second gear. The end of the first gear is fixed to the end of the second gear. The first gear and the second gear are integrally formed, and the shaft centers of the first gear and the second gear are on the same straight line. The first gear and the second gear are both provided with shaft holes, and the shaft holes are provided with key grooves. The surfaces of the first gear and the second gear are sequentially provided with a corrosion-resistant layer and a wear-resistant layer.

[0004] The above duplex gear can improve its wear resistance and corrosion resistance by setting the corrosion-resistant layer and the wear-resistant layer. However, it is difficult to improve the overall structural strength of the duplex gear during use. After a long period of use or under the action of external force, the duplex gear is easily damaged, which affects the working effect. UTILITY MODEL CONTENTS

[0005] In view of the deficiencies of the prior art, the utility model provides an iron-based powder metallurgy duplex gear with reinforcing structure to solve the problems raised in the background art.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: an iron-based powder metallurgy duplex gear with reinforcing structure, comprising a first gear, a second gear fixedly installed on the first gear, a weight-reducing hole arranged in the first gear, a shaft hole arranged in the second gear, a sealing groove arranged on the second gear, and a support reinforcing shaft sleeve fixedly installed in the shaft hole.

[0007] As a preferred technical scheme of the utility model, the first gear includes base layer, wear -resisting anticorrosion layer, reinforcing layer and reinforcing rib, the first gear is provided with base layer inside, the first gear upper surface is provided with wear -resisting anticorrosion layer, wear -resisting anticorrosion layer one side is provided with reinforcing layer, and the reinforcing layer is provided with reinforcing rib inside, and the first gear and the second gear are made of the same material, the wear -resisting anticorrosion layer is made of chromium carbide material, and the wear -resisting anticorrosion layer surface is provided with titanium carbide coating.

[0008] As a preferred technical scheme of the utility model, the reinforcing rib is provided with a plurality of reinforcing ribs, and the reinforcing rib is made of carbon steel material.

[0009] As a preferred technical scheme of the utility model, the second gear and the first gear are provided with shaft holes inside, and the shaft holes are communicated.

[0010] As a preferred technical scheme of the utility model, the second gear and the first gear are provided with sealing grooves on one side.

[0011] As a preferred technical scheme of the utility model, the weight reduction hole is provided with a plurality of weight reduction holes, and the weight reduction holes are uniformly and symmetrically distributed inside the first gear.

[0012] As a preferred technical scheme of the utility model, the supporting reinforcing shaft sleeve includes protective edge and sealing ring, one end of the supporting reinforcing shaft sleeve is provided with protective edge, the protective edge is provided with sealing ring, both ends of the supporting reinforcing shaft sleeve are provided with protective edge, and the protective edge is provided with sealing ring, and the outer diameter size of the sealing ring is matched with the inner diameter size of the sealing groove.

[0013] Compared with the prior art, the utility model provides an iron-based powder metallurgy double gear with reinforcing structure has the advantages that:

[0014] 1、The iron-based powder metallurgy double gear with reinforcing structure, by wear -resisting anticorrosion layer being provided on the upper surface of the gear, wear -resisting anticorrosion layer is made of chromium carbide material, and the upper surface of the wear -resisting anticorrosion layer is provided with titanium carbide coating, can effectively improve the wear -resisting anticorrosion performance of its overall structure, by the double reinforcing layer and the reinforcing rib inside the gear are used in coordination, can improve the bending and shear resistance of the whole, thereby improving its structural strength, preventing long time work from being used or being subjected to external force and being easily damaged, and affecting the use effect.

[0015] 2. This iron-based powder metallurgy double gear with a reinforced structure features a weight-reducing hole inside the first gear. This hole reduces the overall weight and power loss, while also improving the gear's operating speed and efficiency. A supporting and reinforcing bushing is provided inside the shaft hole to reinforce the gear shaft hole and enhance its protective effect. Furthermore, protective edges and sealing rings are provided at both ends of the supporting and reinforcing bushing to work with the sealing groove on the gear, improving the sealing and protection of the connection between the supporting and reinforcing bushing and the gear, thus facilitating better operation. Attached Figure Description

[0016] Figure 1 This is a cross-sectional structural diagram of the present invention;

[0017] Figure 2 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 3 This is a schematic diagram of a partial structure of the gear of this utility model;

[0019] Figure 4 This is a schematic diagram of the top structure of the second gear of this utility model;

[0020] Figure 5 This is a schematic diagram of the bottom structure of the first gear of this utility model;

[0021] Figure 6 This is a schematic diagram of the support and reinforcement bushing structure of this utility model.

[0022] In the diagram: 1. First gear; 101. Base layer; 102. Wear-resistant and corrosion-resistant layer; 103. Reinforcing layer; 104. Reinforcing rib; 2. Second gear; 3. Weight reduction hole; 4. Shaft hole; 5. Sealing groove; 6. Support and reinforcing bushing; 601. Protective edge; 602. Sealing ring. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Please see Figures 1-6 In this embodiment: a double iron-based powder metallurgy gear with a reinforced structure includes a first gear 1, a second gear 2 fixedly mounted on the first gear 1, a weight reduction hole 3 inside the first gear 1, a shaft hole 4 inside the second gear 2, a sealing groove 5 on the second gear 2, and a support and reinforcing bushing 6 fixedly mounted inside the shaft hole 4.

[0025] Referring to Figure 1 and Figure 3 , the first gear 1 comprises a base layer 101, a wear-resistant corrosion-resistant layer 102, a reinforcing layer 103 and a reinforcing rib 104, the first gear 1 is internally provided with the base layer 101, the upper surface of the first gear 1 is provided with the wear-resistant corrosion-resistant layer 102, one side of the wear-resistant corrosion-resistant layer 102 is provided with the reinforcing layer 103, the reinforcing layer 103 is internally provided with the reinforcing rib 104, the first gear 1 and the second gear 2 are made of the same material, the wear-resistant corrosion-resistant layer 102 is made of chromium carbide material, and the wear-resistant corrosion-resistant layer 102 is provided with a titanium carbide coating on the surface; the reinforcing rib 104 is provided with a plurality of reinforcing ribs 104, and the reinforcing rib 104 is made of carbon steel material;

[0026] Specifically: it can improve the wear-resistant corrosion-resistant performance and structural strength, and facilitate better long-term work use.

[0027] Referring to Figure 4 and Figure 5 , the second gear 2 and the first gear 1 are both internally provided with shaft holes 4 in communication;

[0028] Specifically: it is convenient to install the support reinforcing shaft sleeve 6, and it is convenient to support and protect the inside of the gear.

[0029] Referring to Figure 4 and Figure 5 , the second gear 2 and the first gear 1 are both provided with sealing grooves 5 on one side;

[0030] Specifically: it can improve the sealing connection between the support reinforcing shaft sleeve 6, and facilitate better work use.

[0031] Referring to Figure 1 and Figure 2 , the weight reduction holes 3 are provided with a plurality of weight reduction holes 3, which are uniformly and symmetrically distributed in the first gear 1;

[0032] Specifically: it can reduce the overall weight and reduce power loss, and also help to improve the running speed and efficiency of the gear.

[0033] Referring to Figure 1 and Figure 6 , the support reinforcing shaft sleeve 6 comprises a protective edge 601 and a sealing ring 602, the support reinforcing shaft sleeve 6 is provided with the protective edge 601 at one end, the protective edge 601 is provided with the sealing ring 602, the support reinforcing shaft sleeve 6 is provided with the protective edge 601 at both ends, and the protective edge 601 is provided with the sealing ring 602, and the outer diameter size of the sealing ring 602 is matched with the inner diameter size of the sealing groove 5;

[0034] Specifically: it is convenient to support and protect the inside of the gear, and improve the protection effect of the gear.

[0035] The utility model discloses a working principle and use flow: operator in the use process, through being provided with the weight reduction hole 3 in the first gear 1 inside, can alleviate its overall weight reduction power loss, also help to improve the running speed and efficiency of gear, through being provided with wear -resisting anticorrosive layer 102 on the gear upper surface, also is provided with titanium carbide coating on wear -resisting anticorrosive layer 102 surface, can effectively promote its overall structure's wear -resisting anticorrosive performance, prevent being easy to wear and tear damage by external force, through being provided with double reinforcement layer 103 and reinforcing rib 104 cooperation use in the gear inside, convenient for promoting its overall structural strength, prevent being easy to be damaged, through being provided with support reinforcement shaft sleeve 6 cooperation use in the gear inside, convenient for supporting protection to its axle hole 4 inside, convenient for better long -term work use.

[0036] Finally, it should be noted that: the above only for the preferred embodiments of the utility model and does not limit the utility model, although the utility model has been described in detail with reference to the foregoing embodiments, for the person skilled in the art, it still can modify the technical scheme recorded in the foregoing each embodiment, or equivalent replacement to part technical features. Any modification, equivalent replacement, improvement etc. that is made within the spirit and principle of the utility model, should be included in the protection scope of the utility model.

Claims

1. A ferrous powder metallurgy double gear with a reinforcing structure, comprising a first gear (1) on which a second gear (2) is fixedly installed, characterized in that: The first gear (1) is internally provided with a weight-reducing hole (3), the second gear (2) is internally provided with a shaft hole (4), the second gear (2) is provided with a sealing groove (5), and the shaft hole (4) is fixedly installed with a support reinforcing shaft sleeve (6) internally; The first gear (1) comprises a base layer (101), a wear-resistant anticorrosive layer (102), a reinforcing layer (103) and a reinforcing rib (104), the first gear (1) is internally provided with the base layer (101), the upper surface of the first gear (1) is provided with the wear-resistant anticorrosive layer (102), one side of the wear-resistant anticorrosive layer (102) is provided with the reinforcing layer (103), the reinforcing layer (103) is internally provided with the reinforcing rib (104), the first gear (1) and the second gear (2) are made of the same material, the wear-resistant anticorrosive layer (102) is made of chromium carbide material, and the surface of the wear-resistant anticorrosive layer (102) is provided with a titanium carbide coating.

2. The iron-based powder metallurgy duplex gear with a reinforcing structure according to claim 1, characterized in that: The reinforcing rib (104) is provided with a plurality of reinforcing ribs (104), and the reinforcing rib (104) is made of carbon steel material.

3. The iron-based powder metallurgy duplex gear with a reinforcing structure according to claim 1, characterized in that: The second gear (2) and the first gear (1) are both internally provided with the shaft hole (4), and the shaft holes (4) are communicated.

4. The iron-based powder metallurgy duplex gear with a reinforcing structure according to claim 1, characterized in that: The second gear (2) and the first gear (1) are both provided with the sealing groove (5) on one side.

5. The iron-based powder metallurgy duplex gear with a reinforcing structure according to claim 1, characterized in that: The weight-reducing hole (3) is provided with a plurality of weight-reducing holes (3), and the weight-reducing holes (3) are uniformly and symmetrically distributed in the first gear (1).

6. The iron-based powder metallurgy duplex gear with a reinforcing structure according to claim 1, characterized in that: The support reinforcing shaft sleeve (6) comprises a protective edge (601) and a sealing ring (602), one end of the support reinforcing shaft sleeve (6) is provided with the protective edge (601), the protective edge (601) is provided with the sealing ring (602), both ends of the support reinforcing shaft sleeve (6) are provided with the protective edge (601), and the protective edges (601) are both provided with the sealing ring (602), and the outer diameter size of the sealing ring (602) is matched with the inner diameter size of the sealing groove (5).

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