Worm gear

Abstract

The utility model belongs to the technical field of oil and gas pipeline fittings, and relates to a worm gear. The problem that an existing worm gear is short in service life is solved. The worm gear comprises a worm gear body, a connecting piece is arranged at the top of the worm gear body, outer convex teeth are welded to the top of the connecting piece, inner concave teeth are arranged on the left side of an inner cavity of the worm gear body, and the sides, close to the inner wall of the worm gear body, of the inner concave teeth are welded to the inner wall of the worm gear body. The connecting structure is high in connecting strength, good in stress removing effect and long in service life.

Description

Technical Field

[0001] The utility model belongs to the technical field of oil and gas pipeline accessories and relates to an accessory of an electronic actuator, in particular to a worm gear. Background Art

[0002] The worm wheel and the worm gear cooperate to transmit the power. For example, a turbine (worm wheel) [application number: 202122617657.0; authorization announcement number: CN216788485U] is disclosed in Chinese patent literature, which includes a wheel disc and blades arranged equidistantly along the circumference of the wheel disc on the side of the wheel disc; the connection between the blade and the wheel disc is provided with a fillet; and the wheel disc is provided with a plurality of stress grooves surrounding the root of the blade.

[0003] The above-mentioned worm gear has rounded corners at the connection between the blades and the disc, which improves the connection strength between the blades and the disc, reduces stress concentration, and increases the service life of the turbine. However, the worm gear has fewer rounded corners, and the stress groove has a general effect in removing stress. It usually does not have multi-layer composite reinforcement materials, which makes it easy for it to be eroded by external environmental conditions during use, causing its life to be affected. Summary of the invention

[0004] The utility model aims to solve the above problems existing in the prior art and provides a worm gear with high connection strength, good stress removal effect and good weather-resistant protection effect of the main body.

[0005] The purpose of the utility model can be achieved through the following technical solutions: a worm wheel, comprising a worm wheel body, a connecting piece is arranged on the top of the worm wheel body, an external convex tooth is welded on the top of the connecting piece, an internal concave tooth is arranged on the left side of the inner cavity of the worm wheel body, and the side of the internal concave tooth close to the inner wall of the worm wheel body is welded to the inner wall of the worm wheel body.

[0006] The worm wheel is provided with multiple fillets, and the stress relief groove is also designed in a bidirectional manner, so that the connection strength and stress relief effect of the main body are enhanced, and it has a composite weather-resistant protective structure, so that the weather resistance of the main body is better.

[0007] In the above-mentioned worm gear, the inner cavity of the worm gear body is provided with a fixing ring, and the fixing ring is welded to the inner concave teeth on one side close to the inner concave teeth. In practical applications, the connection strength of the body can be improved by a multi-rounded design.

[0008] In the above-mentioned worm gear, grooves are provided on both sides of the connecting member, and bolt holes are provided on the upper and lower sides of the left side of the worm gear body. In practical applications, stress can be effectively removed through the bidirectional symmetrical groove design.

[0009] In the above-mentioned worm gear, the worm gear body includes a high temperature resistant layer, and a base body is welded to the outer side of the high temperature resistant layer. In practical applications, the high temperature resistance of the worm gear body is improved by compounding with high temperature resistant materials.

[0010] In the above-mentioned worm gear, a high-strength layer is welded to the outside of the base body, a weather-resistant layer is welded to the outside of the high-strength layer, and an outer coating is sprayed on the outside of the weather-resistant layer. The purpose of this design is to superimpose multiple protective materials to effectively resist external substances.

[0011] In the above-mentioned worm gear, the high temperature resistant layer is made of nickel-based alloy material, and the base body is made of high temperature alloy material. The purpose of this design is to arrange the high temperature alloy on the outside of the nickel-based alloy, thereby effectively providing its high temperature resistant protection effect.

[0012] In the above-mentioned worm gear, the high-strength layer is made of titanium alloy material, the weather-resistant layer is made of polyurethane material, and the outer coating is sprayed with epoxy resin paint. The purpose of this design is to reduce the intrusion of foreign substances by stacking layers.

[0013] Compared with the prior art, the advantages of the worm gear are: high connection strength, good stress removal effect and better weather resistance of the main body. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the three-dimensional cross-sectional structure of the worm gear.

[0015] Figure 2 It is a three-dimensional right-view structural schematic diagram of the worm gear.

[0016] Figure 3 This utility model Figure 1 A is an enlarged view of the middle image.

[0017] Figure 4 This utility model Figure 1 Enlarged view of B.

[0018] Figure 5 This utility model Figure 1 Enlarged view of C in the middle.

[0019] Figure 6 It is a schematic cross-sectional view of the three-dimensional structure of the worm gear body.

[0020] In the figure, 1. worm gear body; 2. connecting part; 3. external convex teeth; 4. internal concave teeth; 5. grooves; 6. fixing ring; 7. outer coating; 8. bolt holes; 9. base body; 10. high temperature resistant layer; 11. high strength layer; 12. weather resistant layer. DETAILED DESCRIPTION

[0021] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0022] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown, the worm gear includes a worm gear body 1, a connecting piece 2 is arranged on the top of the worm gear body 1, an external convex tooth 3 is welded on the top of the connecting piece 2, an internal concave tooth 4 is arranged on the left side of the inner cavity of the worm gear body 1, and the internal concave tooth 4 is welded to the inner wall of the worm gear body 1 on the side close to the inner wall of the worm gear body 1.

[0023] During actual manufacturing, a fixing ring 6 is disposed in the inner cavity of the worm wheel body 1 , and a side of the fixing ring 6 close to the inner concave teeth 4 is welded to the inner concave teeth 4 .

[0024] In actual manufacturing, grooves 5 are provided on both sides of the connecting member 2 , and bolt holes 8 are provided on both upper and lower sides of the left side of the worm gear body 1 .

[0025] During actual manufacturing, the worm wheel body 1 includes a high temperature resistant layer 10 , and a base body 9 is welded to the outer side of the high temperature resistant layer 10 .

[0026] During actual manufacturing, the high-strength layer 11 is welded to the outer side of the base body 9 , the weather-resistant layer 12 is welded to the outer side of the high-strength layer 11 , and the outer side of the weather-resistant layer 12 is sprayed with the outer coating 7 .

[0027] In actual manufacturing, the high temperature resistant layer 10 is made of a nickel-based alloy material, and the base body 9 is made of a high temperature alloy material.

[0028] In actual manufacturing, the high-strength layer 11 is made of titanium alloy material, the weather-resistant layer 12 is made of polyurethane material, and the outer coating layer 7 is sprayed with epoxy resin paint.

[0029] The worm gear is designed with multiple rounded corners, which can effectively improve the connection strength between them. At the same time, the design of the symmetrical grooves 5 can effectively remove the stress generated during the working process, thereby achieving a better stress removal effect. By providing a high-temperature resistant layer 10, it can effectively protect against external high temperatures and increase the service life of its main body. By providing a high-strength layer 11, it can reduce the damage to it by external substances by increasing the supporting strength. By providing a weather-resistant layer 12, it can protect against external chemical substances and reduce the erosion of it by external environmental conditions.

[0030] The contents not described in detail in this specification belong to the prior art known to the professional and technical personnel in this field. The specific embodiments described in this article are only used to illustrate the spirit of the utility model. The technicians in the technical field of the utility model can make various modifications or supplements to the specific embodiments described or replace them in a similar way, but they will not deviate from the spirit of the utility model or exceed the scope defined by the attached claims.

Claims

1. A worm gear, comprising a worm gear body (1), characterized in that: A connecting piece (2) is provided at the top of the worm wheel body (1), an external convex tooth (3) is welded to the top of the connecting piece (2), an internal concave tooth (4) is provided on the left side of the inner cavity of the worm wheel body (1), and the internal concave tooth (4) is welded to the inner wall of the worm wheel body (1) on a side close to the inner wall of the worm wheel body (1).

2. A worm gear according to claim 1, characterized in that: The inner cavity of the worm wheel body (1) is provided with a fixing ring (6), and a side of the fixing ring (6) close to the inner concave teeth (4) is welded to the inner concave teeth (4).

3. A worm gear according to claim 1, characterized in that: Grooves (5) are provided on both sides of the connecting piece (2), and bolt holes (8) are provided on both upper and lower sides of the left side of the worm gear body (1).

4. A worm gear according to claim 1, characterized in that: The worm wheel body (1) comprises a high temperature resistant layer (10), and a base body (9) is welded to the outer side of the high temperature resistant layer (10).

5. A worm gear according to claim 4, characterized in that: A high-strength layer (11) is welded to the outer side of the base body (9), a weather-resistant layer (12) is welded to the outer side of the high-strength layer (11), and an outer coating (7) is sprayed on the outer side of the weather-resistant layer (12).

6. A worm gear according to claim 4, characterized in that: The high temperature resistant layer (10) is made of a nickel-based alloy material, and the base layer (9) is made of a high temperature alloy material.

7. A worm gear according to claim 5, characterized in that: The high-strength layer (11) is made of a titanium alloy material, the weather-resistant layer (12) is made of a polyurethane material, and the outer coating (7) is sprayed with an epoxy resin paint.

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