Double-end large-variable-diameter gear shaft integrated transmission shaft

Abstract

The utility model relates to the field of transmission part manufacturing, in particular to a double-end large reducing gear shaft integrated transmission shaft which comprises a middle shaft section, transition shaft sections fixed on two sides of the middle shaft section and reducing shaft sections fixed on the transition shaft sections, the outer diameter of the middle shaft section is the same as that of the transition shaft sections, and the outer diameter of the reducing shaft sections is 1 / 7-1 / 5 of that of the transition shaft sections. A transmission gear is integrally formed on the middle shaft section; the transmission shaft has the advantages that the transmission shaft is divided into multiple sections, the middle shaft section can be a transmission shaft with a conventional size and is used for being in transmission connection with a conventional power source, and the diameter of the variable-diameter shaft section is greatly reduced and is used for being in transmission connection with a special operation machine with a narrow internal transmission space.

Description

Technical Field

[0001] This utility model relates to the field of transmission component manufacturing, and in particular to an integrated transmission shaft with double-ended large-diameter gear shaft. Background Technology

[0002] A driveshaft is a shaft component used to transmit power between different mechanical components, ensuring efficient and stable power transmission from the power source. A variable diameter driveshaft is a specially designed driveshaft whose diameter varies along its length to adapt to different mechanical needs and application scenarios, such as stepped variable diameter driveshafts, tapered variable diameter driveshafts, and so on.

[0003] In some specialized industrial machinery, due to the limited internal transmission space, there are high requirements for the diameter of the drive shaft. However, the power source of such machinery is of conventional size, and a conventional shaft system is used for transmission. This requires a sharp change in the diameter of the drive shaft in the axial direction. How to design such a drive shaft to meet the operational requirements while having advantages such as light weight and wide applicability is currently a focus of gear and shaft manufacturers.

[0004] Therefore, this case is brought. Utility Model Content

[0005] The purpose of this utility model is to provide a double-ended large-diameter gear shaft integrated transmission shaft to meet the operational needs of special industrial environments, while also offering advantages such as light weight and wide applicability.

[0006] To achieve the above objectives, the technical solution of this utility model is as follows:

[0007] A double-ended large-diameter gear shaft integral transmission shaft includes an intermediate shaft section, a transition shaft section fixed on both sides of the intermediate shaft section, and a variable-diameter shaft section fixed on the transition shaft section. The intermediate shaft section and the transition shaft section have the same outer diameter, and the outer diameter of the variable-diameter shaft section is 1 / 7 to 1 / 5 of the outer diameter of the transition shaft section. A transmission gear is integrally formed on the intermediate shaft section.

[0008] Furthermore, the intermediate shaft section has a hollow structure, and the hollow part is filled with an epoxy resin foam layer or a polyurethane foam layer.

[0009] Furthermore, the inner wall of the hollow cavity in the intermediate shaft section is provided with a spiral textured surface.

[0010] Furthermore, the fixed connection structure between the variable diameter shaft section and the transition shaft section is a detachable fixed structure.

[0011] Furthermore, a keyway or key is provided on the side wall of the transition shaft section.

[0012] Furthermore, one end of the transition shaft section is provided with an internal thread mounting hole at its center, and one end of the variable diameter shaft section is provided with an external thread connector. The variable diameter shaft section is provided with an external thread near the outer wall of the external thread connector and is threaded with a locking ring. After the locking ring is tightened, it is tightly attached to the end face of the variable diameter shaft section.

[0013] The variable diameter shaft section is connected and fixed to the transition shaft section through the cooperation of the external threaded connector and the internal threaded mounting hole, and the variable diameter shaft section is locked and fixed on the transition shaft section by turning the locking ring.

[0014] Furthermore, the end face of the locking ring opposite to the variable diameter shaft section and the end face of the transition shaft section opposite to the locking ring are both frosted surfaces.

[0015] Furthermore, the other end of the variable diameter shaft segment is a polygonal end or is provided with a keyway or a key.

[0016] The advantages of this utility model are:

[0017] 1. The drive shaft is divided into multiple sections. The middle section can be a drive shaft of standard size, used for connection with conventional power sources. The diameter of the variable-diameter section is greatly reduced, used for connection with special working machinery with limited internal transmission space.

[0018] 2. The intermediate shaft section has a hollow design and is filled with a material with lightweight and high viscosity properties, which has the advantage of being lightweight. At the same time, the lightweight and high viscosity material has high strength after being filled, which can support the shaft for high-speed transmission.

[0019] 3. The design of the detachable variable diameter shaft section allows for the replacement of different sizes of variable diameter shaft sections. Furthermore, after the variable diameter shaft section is removed, the intermediate shaft section and the transition shaft section can be used as a whole transmission shaft for conventional equipment. Attached Figure Description

[0020] Figure 1 This is a front view schematic diagram of the integrated transmission shaft with double-ended large-diameter gear shaft in the embodiment;

[0021] Figure 2 for Figure 1 A left-view diagram;

[0022] Figure 3 for Figure 1 A cross-sectional view;

[0023] Figure 4 for Figure 3 Enlarged schematic diagram of part A;

[0024] Figure 5 for Figure 3 A schematic diagram after the variable diameter shaft section has been removed.

[0025] Label Explanation

[0026] 1. Intermediate shaft section; 101. Epoxy resin foam filling layer or polyurethane foam filling layer; 102. Spiral internal thread texture; 2. Transition shaft section; 201. Keyway; 202. Internal thread mounting hole; 203. Frosted surface; 3. Variable diameter shaft section; 301. External thread connector; 302. External thread; 303. Locking ring; 3031. Frosted surface; 304. Polygonal end; 305. Keyway. Detailed Implementation

[0027] The present invention will be further described in detail below with reference to the embodiments. It should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer" etc. indicated by the accompanying drawings are only for the convenience of describing the present invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention.

[0028] This embodiment proposes an integrated transmission shaft with a double-ended large-diameter gear shaft, such as... Figures 1 to 3 As shown, the system includes an intermediate shaft section 1, transition shaft sections 2 fixed on both sides of the intermediate shaft section 1, and variable diameter shaft sections 3 fixed on the transition shaft sections 2 (the transition shaft sections 2 and the intermediate shaft section 1 are welded together after each is machined). The intermediate shaft section 1 and the transition shaft section 2 have the same outer diameter, and the outer diameter of the variable diameter shaft section 3 is 1 / 7 to 1 / 5 of the outer diameter of the transition shaft section 2. A transmission gear is integrally formed on the intermediate shaft section 1. External power is transmitted to the intermediate shaft section 1 through the transmission gear, and then to the variable diameter shaft sections 3 at both ends via the transition shaft sections 2, realizing single input and dual output. To facilitate the connection of the variable diameter shaft section 3 with the working equipment, such as... Figure 1 and 2 As shown, in this embodiment, the end of the left variable diameter shaft segment 3 is designed as a four-dimensional deformable end structure, and the end of the right variable diameter shaft segment 3 is provided with a keyway.

[0029] like Figure 5 As shown, the intermediate shaft section 1 has a hollow structure, and the hollow space is filled with an epoxy resin foam layer or a polyurethane foam layer. The hollow design of the intermediate shaft section 1, filled with a material with lightweight and high viscosity properties, has the advantage of being lightweight. At the same time, the lightweight and high viscosity material provides high strength, which can support the shaft for high-speed transmission. Preferably, the inner wall of the hollow cavity of the intermediate shaft section 1 is provided with a spiral textured surface 102 to increase the bonding strength between the epoxy resin foam layer or the polyurethane foam layer and the inner wall of the intermediate shaft section 1.

[0030] In this embodiment, the fixed connection structure between the variable diameter shaft section 3 and the transition shaft section 2 is a detachable fixed structure. Simultaneously, a keyway 201 is provided on the side wall of the transition shaft section 2. The detachable design of the variable diameter shaft section 3 allows for the replacement of different sizes of the variable diameter shaft section 3. Furthermore, after the variable diameter shaft section 3 is removed, the intermediate shaft section 1 and the transition shaft section 2 can function as a single transmission shaft for conventional equipment. The keyway design of the transition shaft section 2 facilitates connection with the operating equipment.

[0031] In this embodiment, the detachable fixing structure between the variable diameter shaft section 3 and the transition shaft section 2 is specifically referred to [reference needed]. Figure 3 and Figure 4 The transition shaft section 2 has an internally threaded mounting hole 202 at one end center, and the variable diameter shaft section 3 has an externally threaded connector 301 at one end. The variable diameter shaft section 3 has an external thread 302 near the outer wall of the externally threaded connector 301, and a locking ring 303 is threadedly connected to it. When tightened, the locking ring 303 fits tightly against the end face of the variable diameter shaft section 3. The variable diameter shaft section 3 is connected and fixed to the transition shaft section 2 through the cooperation of the externally threaded connector 301 and the internally threaded mounting hole 202, and is locked and fixed to the transition shaft section 2 by tightening the locking ring 303. Preferably, the end face of the locking ring 303 opposite to the variable diameter shaft section 3 and the end face of the transition shaft section 2 opposite to the locking ring 303 are both frosted surfaces 203 / 3031. The frosted surface increases the friction coefficient between the contact surfaces, which helps to improve the stability of the connection between the locking ring 303 and the transition shaft section 2, preventing loosening due to vibration or impact.

[0032] The above embodiments are only used to explain the concept of this utility model, and are not intended to limit the protection of this utility model. Any non-substantial modifications made to this utility model using this concept should fall within the protection scope of this utility model.

Claims

1. A double-ended large-diameter gear shaft integrated transmission shaft, characterized in that, It includes an intermediate shaft section, transition shaft sections fixed on both sides of the intermediate shaft section, and a variable diameter shaft section fixed on the transition shaft section. The intermediate shaft section and the transition shaft section have the same outer diameter, and the outer diameter of the variable diameter shaft section is 1 / 7 to 1 / 5 of the outer diameter of the transition shaft section. A transmission gear is integrally formed on the intermediate shaft section.

2. The integrated transmission shaft with double-ended large-diameter gear shaft as described in claim 1, characterized in that, The intermediate shaft section has a hollow structure, and the hollow part is filled with an epoxy resin foam layer or a polyurethane foam layer.

3. The integrated transmission shaft with double-ended large-diameter gear shaft as described in claim 1, characterized in that, The inner wall of the hollow cavity in the intermediate shaft section is provided with a spiral textured pattern.

4. The integrated transmission shaft with double-ended large-diameter gear shaft as described in claim 1, characterized in that, The fixed connection structure between the variable diameter shaft section and the transition shaft section is a detachable fixed structure.

5. The integrated transmission shaft with double-ended large-diameter gear shaft as described in claim 4, characterized in that, The sidewall of the transition shaft section is provided with a keyway or a key.

6. The integrated transmission shaft with double-ended large-diameter gear shaft as described in claim 5, characterized in that, The transition shaft section has an internal threaded mounting hole at one end center, and the variable diameter shaft section has an external threaded connector at one end. The variable diameter shaft section has an external thread near the outer wall of the external threaded connector and is threaded with a locking ring. After the locking ring is tightened, it fits tightly against the end face of the variable diameter shaft section. The variable diameter shaft section is connected and fixed to the transition shaft section through the cooperation of the external threaded connector and the internal threaded mounting hole, and the variable diameter shaft section is locked and fixed on the transition shaft section by turning the locking ring.

7. The integrated transmission shaft with double-ended large-diameter gear shaft as described in claim 6, characterized in that, The end face of the locking ring opposite the variable diameter shaft section and the end face of the transition shaft section opposite the locking ring are both frosted surfaces.

8. The integrated transmission shaft with double-ended large-diameter gear shaft as described in claim 6, characterized in that, The other end of the variable diameter shaft section is a polygonal end or has a keyway or a key.

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