Single-input multi-output transmission part structure and speed-changing gear box

Abstract

One end of a shaft body is provided with a replaceable input structure, the other end of the shaft body is provided with two spiral bevel gears, the first spiral bevel gear is fixed through a hot jacket, and the second spiral bevel gear achieves axial position adjustment through threaded connection. And the assembly flexibility and the adaptation capability are greatly improved. An external thread structure is further arranged on the shaft body and can be used for installing a third gear, the power output path is expanded, and the requirement of a complex transmission system is met. The through hole is formed in the center of the shaft body, cooling liquid is supported to be directly sprayed to an external machining part from the interior of the shaft, the shaft is suitable for high-precision cutting, numerical control machine tools and other scenes needing the internal cooling function, and the spiral flow guide groove is formed in the shaft, so that the cooling liquid flowing uniformity and conveying efficiency can be effectively improved. The component is convenient for field installation, maintenance and later upgrade, has the advantages of compact structure, stable performance, high universality and the like, and is widely applied to industrial machinery, automatic equipment and intelligent transmission systems.

Description

Technical Field

[0001] This utility model relates to the field of transmission component manufacturing, and in particular to a single-input multi-output transmission component structure and gearbox. Background Technology

[0002] In existing mechanical transmission systems, transmission components, as the core components for transmitting power, are widely used in various industrial equipment, automotive drive systems, and automation devices. Traditional transmission structures typically only achieve a single power transmission function, and their structures are relatively simple, making it difficult to meet the comprehensive requirements of modern mechanical equipment for high-precision transmission, single-input multi-stage output, optimized spatial layout, and flexible adjustment.

[0003] Taking a common driveshaft structure as an example, current driveshafts with single input and multiple outputs typically have an input structure at one end and multiple output structures at the other end, such as two bevel gears. However, the positions of these two bevel gears are usually fixed and cannot be adjusted, which cannot adapt to the different requirements of gear meshing position, transmission ratio, or installation spacing under different specifications or application scenarios. The gears on this driveshaft need to be customized and installed in the factory, and the customer cannot adjust them according to their needs. In addition, the shaft body does not have a reserved gear installation structure, which cannot meet the upgrade and modification of the gearbox to add output ends. It is necessary to redesign or replace the entire driveshaft, which increases the modification cost.

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

[0005] One of the objectives of this utility model is to provide a single-input multi-output transmission component structure, so as to realize multi-level power output while improving its applicability, assembly flexibility and convenience for later modification and upgrading.

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

[0007] A single-input multi-output transmission component structure includes a shaft body. One end of the shaft body has an input structure, and the other end has an output structure. The output structure includes a first helical bevel gear and a second helical bevel gear. The first helical bevel gear is located at the outermost end of the shaft body and is fixed to the shaft body by a heat-fitting sleeve. The inner ring of the second helical bevel gear has an internal thread, and the outer wall of the shaft body near the side of the helical bevel gear has an external thread. The axial length of the first external thread is 3-5 times the axial length of the first internal thread. The second helical bevel gear is threaded to the shaft body. Locking rings are threaded to both sides of the shaft body near the second helical bevel gear. The outer wall of the shaft body near the input structure has the second external thread and a retaining ring adjacent to the external thread.

[0008] Furthermore, the retaining ring is provided with fastening screw holes.

[0009] Furthermore, the input structure includes a shaft segment, which is polygonal, has a keyway on its outer wall, or has a gear-like structure on its outer wall.

[0010] Furthermore, the shaft segment and the shaft body are detachably connected. A connecting groove is opened at one end of the shaft segment near the shaft body. The outer diameter of the shaft body is reduced on the side near the shaft segment to form a connecting segment that can be inserted into the connecting groove. Corresponding fastening screw holes are provided on the connecting groove and the connecting segment.

[0011] Furthermore, a positioning key structure is provided between the shaft segment and the shaft body.

[0012] Furthermore, the shaft body center and the shaft segment center are provided with through holes, and the two ends of the through holes are provided with internal threads and are threaded to plugs or infusion tubes.

[0013] Furthermore, a spiral guide groove is provided on the inner wall of the through hole.

[0014] The second objective of this invention is to provide a gearbox including the above-mentioned single-input multi-output transmission component structure.

[0015] The advantages of this invention are as follows: This solution proposes a single-input, multi-output transmission component structure, achieving a high degree of integration of power transmission, coolant delivery, and multi-stage output functions. One end of the shaft body has a replaceable input structure, and the other end is equipped with two bevel gears. The first bevel gear is fixed by a heat-shrink fitting, while the second bevel gear is adjusted axially via a threaded connection, significantly improving assembly flexibility and adaptability. An external thread structure is also provided on the shaft body, which can be used to install a third gear, expanding the power output path and meeting the needs of complex transmission systems.

[0016] In addition, the shaft body has a through hole at its center, allowing coolant to be sprayed directly from inside the shaft onto external machined parts. This is suitable for high-precision cutting, CNC machine tools, and other applications requiring internal cooling. It also features a built-in spiral guide groove to effectively improve the uniformity and efficiency of coolant flow. This component is easy to install, maintain, and upgrade on-site, and boasts advantages such as compact structure, stable performance, and strong versatility. It is widely applicable to industrial machinery, automated equipment, and intelligent transmission systems. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of the single-input multi-output transmission component in Example 1;

[0018] Figure 2 This is a schematic diagram of the structure of the single-input multi-output transmission component in Embodiment 1, relative to... Figure 1 , Figure 2 The fastening screws between the central shaft section and the shaft body were removed;

[0019] Figure 3 This is a schematic diagram of the structure of the single-input multi-output transmission component in Example 2. Figure 1 or Figure 2 Infusion tubes are installed at both ends of the central through hole. Figure 3 Plugs are installed at both ends of the through hole;

[0020] Figure 4 This is a schematic diagram of the structure of the single-input multi-output transmission component in Embodiment 2, relative to... Figure 3 , Figure 4 A third gear is installed in the middle.

[0021] Label Explanation

[0022] 1. Shaft body; 2. First bevel gear; 3. Second bevel gear; 4. First external thread; 5. Locking ring; 6. Second external thread; 7. Retaining ring; 8. Fastening screw hole; 9. Shaft section; 10. Through hole; 11. Plug; 12. Infusion tube; 13. Spiral guide groove. Detailed Implementation

[0023] 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 coordinate system of the accompanying drawings are based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not 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. Example

[0024] This embodiment proposes a single-input multi-output transmission component structure, such as... Figures 1 to 2 As shown, it includes a shaft body 1, one end of which is provided with an input structure and the other end with an output structure.

[0025] In this embodiment, the output structure includes a first bevel gear 2 and a second bevel gear 3. The first bevel gear 2 is located at the outermost end of the shaft body 1 and is fixed to the shaft body 1 by a heat fitting. The inner ring of the second bevel gear 3 is provided with an internal thread 1, and the outer wall of the shaft body 1 is provided with an external thread 4 on the side of the first bevel gear 2. The axial length of the external thread 4 is 3-5 times the axial length of the internal thread 1. The second bevel gear 3 is connected to the shaft body 1 by a thread. Locking rings 5 ​​are threadedly connected to both sides of the shaft body 1 located at the second bevel gear 3. According to the gear meshing position requirements in the actual application scenario, the position of the second bevel gear 3 on the shaft body 1 is adjusted by turning the second bevel gear 3. After adjustment, the second bevel gear 3 is fixed by tightening the locking rings 5 ​​on both sides.

[0026] In this embodiment, the input structure includes a shaft segment 9. The shaft segment 9 can be polygonal, or its outer wall can have a keyway or a gear-like structure. This embodiment uses a gear-like shaft segment 9 to input power. Preferably, the shaft segment 9 and the shaft body 1 are detachably connected. A connecting groove is formed at one end of the shaft segment 9 near the shaft body 1. The outer diameter of the shaft body 1 is reduced on the side near the shaft segment 9 to form a connecting section that can be inserted into the connecting groove. The connecting groove and the connecting section are provided with corresponding fastening screw holes 8. After the shaft segment 9 is inserted into the shaft body 1, fastening screws are screwed in to fix it. Furthermore, a positioning key structure is provided between the shaft segment 9 and the shaft body 1 to achieve initial insertion positioning and ensure the alignment of the screw holes.

[0027] In some applications, such as lathe milling, cooling water jets are needed to cool the work areas. To optimize the structure, this embodiment places the cooling water delivery channel inside the drive shaft. Specifically, a through hole 10 is provided at the center of the shaft body 1 and the center of the shaft segment 9. Internal threads are provided at both ends of the through hole 10, and delivery pipes 12 are threadedly connected to them. The delivery pipe located on the side of the bevel gear 2 can be connected to a nozzle, and the delivery pipe located on the input structure side can be connected to an external delivery pipe through a bearing, thereby realizing the delivery of coolant. When coolant is delivered inside the shaft body 1, if the through hole 10 is a straight channel, the liquid is prone to forming turbulence or dead zones (i.e., no coolant passes through a certain part) within the channel, resulting in uneven stress inside the shaft body 1 and affecting the rotational stability of the shaft body 1. Preferably, this embodiment provides a spiral guide groove 13 on the inner wall of the through hole 10. The spiral guide groove 13 can guide the coolant forward in a spiral manner along the axial direction, helping to reduce turbulence and dead zones, ensuring uniform distribution of coolant throughout the channel, and guaranteeing the rotational stability of the shaft body 1.

[0028] To address the shortcomings of existing shafts in the background art that cannot meet the upgrade requirements of gearboxes with added output ends, this embodiment provides an external thread 6 and a retaining ring 7 adjacent to the external thread on the outer wall of the shaft body 1 near the input structure for mounting a synchronous pulley, sprocket, or gear. The retaining ring 7 is used to limit the position of the extended synchronous pulley, sprocket, or gear. Preferably, this embodiment provides a fastening screw hole 8 on the retaining ring 7 for fixing the extended synchronous pulley, sprocket, or gear to the retaining ring 7 with fastening screws, thereby improving the installation stability of the extended part. Example

[0029] like Figure 3 and Figure 4 As shown, the structure of this embodiment is basically the same as that of embodiment 1, except that the infusion pipe 12 is removed and replaced with a plug 11. This allows the transmission structure to be installed in some applications where coolant spraying is not required. Simultaneously, the through holes 10 in the plugs 11 at both ends can be filled with coolant for cooling the shaft body 1 itself. Additionally, as... Figure 4As shown, in this embodiment, a third gear is installed at the external thread 26 as an extension installation for power output. Example

[0030] This embodiment proposes a gearbox, which includes the single-input multi-output transmission component structure described in Embodiment 1 or Embodiment 2.

[0031] 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 single-input multi-output transmission component structure, comprising a shaft body, wherein one end of the shaft body is provided with an input structure and the other end is provided with an output structure, wherein the output structure includes a first helical bevel gear and a second helical bevel gear; Its features are: The first spiral bevel gear is located at the outermost end of the shaft body and is fixed to the shaft body by a heat fitting. The inner ring of the second spiral bevel gear is provided with an internal thread, and the outer wall of the shaft body is provided with an external thread on the side of the spiral bevel gear. The axial length of the external thread is 3-5 times the axial length of the internal thread. The second spiral bevel gear is connected to the shaft body by a thread. Locking rings are threaded to both sides of the shaft body located on the second spiral bevel gear. The outer wall of the shaft body is provided with two external threads and a retaining ring adjacent to the external threads on the side near the input structure.

2. The single-input multi-output transmission component structure as described in claim 1, characterized in that, The retaining ring has fastening screw holes.

3. The single-input multi-output transmission component structure as described in claim 1, characterized in that, The input structure includes a shaft segment, which is polygonal, has a keyway on its outer wall, or has a gear-like structure on its outer wall.

4. The single-input multi-output transmission component structure as described in claim 3, characterized in that, The shaft segment and the shaft body are detachably connected. A connecting groove is opened at one end of the shaft segment near the shaft body. The outer diameter of the shaft body is reduced on the side near the shaft segment to form a connecting segment that can be inserted into the connecting groove. Corresponding fastening screw holes are provided on the connecting groove and the connecting segment.

5. The single-input multi-output transmission component structure as described in claim 4, characterized in that, A locating key structure is provided between the shaft segment and the shaft body.

6. The single-input multi-output transmission component structure as described in claim 3, characterized in that, Through holes are provided at the center of the shaft body and the center of the shaft segment. Both ends of the through holes are provided with internal threads and are connected to plugs or infusion tubes.

7. The single-input multi-output transmission component structure as described in claim 6, characterized in that, The inner wall of the through hole is provided with a spiral guide groove.

8. A gearbox, characterized in that, It includes the single-input multi-output transmission component structure as described in any one of claims 1 to 7.

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