Middle shaft split modular structure for photo-thermal speed reducer

Abstract

The utility model belongs to the technical field of photo-thermal rotary high-precision speed reducer parts, and discloses a center shaft split modular structure for a photo-thermal speed reducer, which comprises a gear shaft and a flange plate, mounting holes are reserved in the middle of the gear shaft and the middle of the flange plate, a plurality of groups of inner hexagon screws are mounted on the flange plate along the mounting holes, and the inner hexagon screws are connected with the gear shaft. The gear shaft and the flange plate are axially locked; a plurality of pins are evenly distributed on the surface of the flange plate and located on the outer side of the mounting hole, and the pins are embedded into the gear shaft along the flange plate, are in close fit with the gear shaft and are used for dispersing bearing torque. The split structure of the gear shaft and the flange plate is adopted for production, so that the machining of the gear is not limited by the size of the flange plate, and the flange plates with different specifications can be replaced according to the installation size in the actual production process.

Description

Technical Field

[0001] The utility model relates to the technical field of photothermal rotary high-precision reducer parts, and more specifically, to a central shaft split modular structure for a photothermal reducer. Background Art

[0002] The main structural parts of the photothermal rotary high-precision reducer are the housing and gear structure, and the mounting flange derived from the gear is usually integral.

[0003] At present, there are several disadvantages about the reducer mounting flange:

[0004] 1. Since the installation dimensions of the reducer and equipment are usually determined based on the project, and each project is different, the dimensions are non-standard, and the product needs to be redesigned and re-molded, which greatly increases the manufacturing cost.

[0005] 2. Due to the limitations of gear hobbing equipment, the use of an integral structure places high demands on the equipment's appearance.

[0006] 3. Based on the second question, this field usually adopts a split structure and uses multiple bolts (12-24) to fix the gear. While reducing the demand for gear processing equipment, there is a problem of increased product structural materials and reduced overall torque resistance of the gear and flange plate.

[0007] In view of this, we propose a split-axis modular structure for photothermal reducers. Utility Model Content

[0008] 1. Technical problems to be solved

[0009] The purpose of the present utility model is to provide a split modular structure of a central shaft for a photothermal reducer to solve the problems raised in the above-mentioned background technology.

[0010] 2. Technical solution

[0011] A split-shaft modular structure for a photothermal reducer includes a gear shaft and a flange plate. Mounting holes are reserved in the middle of the gear shaft and the flange plate. Multiple sets of hexagon socket screws are installed along the mounting holes in the flange plate to axially lock the gear shaft and the flange plate.

[0012] A number of pins are evenly distributed on the surface of the flange plate at positions outside the mounting holes. The pins are embedded into the interior of the gear shaft along the flange plate and fit tightly with the gear shaft to disperse the torque.

[0013] In a preferred embodiment, the number of the hexagon socket screws in each group is set to two, and the two hexagon socket screws are symmetrically distributed along one side of the mounting hole.

[0014] In a preferred embodiment, a screw hole 1 and a pin hole 1 are respectively provided on the surface of the flange plate at positions corresponding to the hexagon socket screw and the pin. The screw hole 1 is a threaded hole, and the hexagon socket screw is threadedly engaged with the screw hole 1. The pin passes through the pin hole 1 and is embedded in the gear shaft to complete the engagement.

[0015] In a preferred embodiment, a screw hole 2 is provided on the end surface of the gear shaft at a position corresponding to the position of the hexagon socket screw, and a pin hole 2 is provided on the end surface of the gear shaft at a position corresponding to the position of the pin. The pin hole 2 is a threaded hole, and the hexagon socket screw is threadedly matched with the screw hole 2. The pin passes through the pin hole 1 and is embedded in the pin hole 2 to complete the assembly.

[0016] In a preferred embodiment, the sides of the mounting hole are protruded and thickened near screw hole 2 and pin hole 2 to form reinforced edges, thereby reinforcing the locations where the hexagon socket screws and pins are installed, and shrinking margins are provided at other locations.

[0017] In a preferred embodiment, the position where the end face of the gear shaft and the flange plate fit together is recessed inward to form a conical positioning groove, and the position of the flange plate corresponding to the positioning groove is protruded outward to form a conical positioning block. The positioning block is embedded in the positioning groove for assembly to achieve a self-positioning assembly effect and will not shift during the assembly process.

[0018] In a preferred embodiment, a plurality of reducer connection holes are evenly distributed in a circular array at the outer edge of the flange plate for connecting the reducer to the integral structure consisting of the gear shaft and the flange plate.

[0019] 3. Beneficial effects

[0020] Compared with the prior art, the advantages of the present invention are:

[0021] 1. The utility model adopts a split structure of the gear shaft and the flange plate for production, so the processing of the gear will not be limited by the size of the flange plate, and flange plates of different specifications can be replaced according to the installation dimensions in the actual production process.

[0022] 2. In this application, only a small number of hexagon socket screws are needed to fix the gear shaft and flange plate. At the same time, installation positions are reserved during the shape design, and reinforced edges are set to strengthen the positions for installing hexagon socket screws and pins. The remaining parts are shrunk. Compared with the conventional split structure, materials are saved. In this application, the number of bolts used is only the conventional one plate, which reduces the cost of spare parts and saves casting materials.

[0023] 3. The utility model uses a small number of hexagon socket screws that fit tightly in the holes of the gear and flange to disperse the circumferential torque. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0025] Figure 2 This is an exploded view of the overall structure of the utility model;

[0026] Figure 3 This is a schematic diagram of the structure of the flange plate in the utility model;

[0027] Figure 4 This is a schematic diagram of a top view of the flange plate structure of the present invention;

[0028] Figure 5 This is a schematic diagram of the gear shaft structure in the present utility model;

[0029] Figure 6 This is a schematic diagram of the gear shaft structure in the present invention when viewed from above;

[0030] Figure 7 This is a top view of the structure after the gear shaft and flange plate are assembled in the present invention;

[0031] Figure 8 For this utility model Figure 7 Structural cross-section view at AA in the middle;

[0032] Explanation of the numbers in the figure: 1. Gear shaft; 2. Flange plate; 3. Hexagon socket screw; 4. Pin; 5. Screw hole 1; 6. Pin hole 1; 7. Mounting hole; 8. Reducer connecting hole; 9. Screw hole 2; 10. Pin hole 2; 11. Reinforced edge; 12. Positioning groove; 13. Positioning block. DETAILED DESCRIPTION

[0033] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and 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, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0034] In the description of the present invention, “plurality” means two or more, unless otherwise clearly defined.

[0035] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "provided with," "mounted / connected," and "connected" should be understood in a broad sense. For example, "connected" can mean a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be internal communication between two components. For those skilled in the art, the specific meanings of the above terms in this utility model can be understood according to the specific circumstances.

[0036] See also Figure 1-8 ,The utility model provides a technical solution:

[0037] A modular structure of a split central shaft for a photothermal reducer, comprising a gear shaft 1 and a flange plate 2. Mounting holes 7 are reserved in the middle of the gear shaft 1 and the flange plate 2. The gear shaft 1 and the flange plate 2 are split structures. Therefore, when processing the gear shaft 1, there is no restriction due to the different sizes of the flange plate 2. The gear shaft 1 and the flange plate 2 form a whole after assembly. Please refer to Figure 2 Specifically, multiple groups of hexagon socket screws 3 are installed along the mounting hole of the flange plate 2. The number of hexagon socket screws 3 in each group is set to two. The two hexagon socket screws 3 are symmetrically distributed along one side of the mounting hole to axially lock the gear shaft 1 and the flange plate 2; a number of pins 4 are evenly distributed on the surface of the flange plate 2 outside the mounting hole. The pins 4 are embedded into the interior of the gear shaft 1 along the flange plate 2 and fit tightly with the gear shaft 1 to disperse the torque. A number of reducer connection holes 8 are evenly distributed in a circular array on the outer edge of the flange plate 2 to connect the overall structure composed of the gear shaft 1 and the flange plate 2 to the reducer.

[0038] Please refer to the instruction manual Figure 3-4 The assembly method of the gear shaft 1 and the flange plate 2 in this embodiment is specifically described. A screw hole 5 and a pin hole 6 are respectively provided on the surface of the flange plate 2 at positions corresponding to the hexagon socket screw 3 and the pin 4. The screw hole 5 is a threaded hole, and the hexagon socket screw 3 is threadedly engaged with the screw hole 5. The pin 4 passes through the pin hole 6 and is then embedded in the gear shaft 1 to complete the engagement.

[0039] Please refer to the instruction manual Figure 5-6 The assembly method of the gear shaft 1 and the flange plate 2 in this embodiment is specifically described. A second screw hole 9 is provided on the end surface of the gear shaft 1 at a position corresponding to the hexagon socket screw 3. A second pin hole 10 is provided on the end surface of the gear shaft 1 at a position corresponding to the pin 4. The second pin hole 10 is a threaded hole. The hexagon socket screw 3 is threadedly engaged with the second screw hole 9. The pin 4 passes through the first pin hole 6 and is then embedded in the second pin hole 10 to complete the assembly.

[0040] In summary, please refer to the instructions attached Figure 2 、 Figure 7 When assembling the flange plate 2 and the gear shaft 1, the hexagon socket screws 3 are sequentially passed through the screw holes 1-5 on the flange plate 2 and then enter the screw holes 1-5 on the gear shaft 1, and are fixed by threaded engagement, which mainly plays the role of axial locking. In addition, the pins 4 are sequentially passed through the pin holes 1-6 on the flange plate 2 and then inserted into the pin holes 2-10 on the gear shaft 1 to complete the assembly, which is used to disperse the circumferential torque. In this embodiment, only three pins 4 are needed, which are tightly fitted in the gear shaft 1 and the flange plate 2. The overturning and circumferential torque bearing capacity of the split center shaft can reach the strength of the entire center shaft.

[0041] Continuing to refer to the instructions 5-6, the side edges of the mounting holes near the screw holes 2 9 and the pin holes 2 10 are all protruded and thickened to form reinforced edges 11, and the positions for installing the hexagon socket screws 3 and the pins 4 are reinforced, and the remaining positions are shrunk. The traditional structure of using screws evenly distributed is abandoned. Combined with the material mechanical properties of the product, when the product meets the yield strength σs (MPa) ≥ 750, only a small number of screws are used for fixing. In this embodiment, 6 hexagon socket screws 3 are used. At the same time, installation positions are reserved during the appearance design. Only the positions for installing the hexagon socket screws 3 and the pins 4 are reinforced, and the remaining parts are shrunk to save materials.

[0042] Please refer to the instruction manual Figure 8 , the assembly method of the gear shaft 1 and the flange plate 2 in this embodiment is further explained. The position where the end surface of the gear shaft 1 and the flange plate 2 are in contact is recessed inward to form a tapered positioning groove 12, and the position of the flange plate 2 corresponding to the positioning groove 12 is protruded outward to form a tapered positioning block 13. The positioning block 13 is embedded in the positioning groove 12 for assembly. When the flange plate 2 is assembled on the gear shaft 1, the positioning block 13 is inserted into the positioning groove 12 to achieve assembly. The positioning effect is achieved by the taper angle, and it is not easy to cause deviation during the assembly process, which facilitates assembly.

[0043] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely preferred examples of the present invention and are not intended to limit the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and improvements fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A modular structure of a split central shaft for a photothermal reducer, characterized by: The gear shaft (1) and the flange plate (2) are provided with mounting holes (7) in the middle of the gear shaft (1) and the flange plate (2). The flange plate (2) is provided with a plurality of sets of hexagon socket screws (3) along the mounting holes to axially lock the gear shaft (1) and the flange plate (2). A plurality of pins (4) are evenly distributed on the surface of the flange plate (2) at positions outside the mounting hole. The pins (4) are embedded into the interior of the gear shaft (1) along the flange plate (2) and tightly fit with the gear shaft (1) to disperse and bear torque.

2. The central shaft split modular structure for a photothermal reducer according to claim 1 is characterized in that: The number of the hexagon socket screws (3) in each group is set to two, and the two hexagon socket screws (3) are symmetrically distributed along one side of the mounting hole.

3. The central shaft split modular structure for a photothermal reducer according to claim 1 is characterized in that: The surface of the flange plate (2) is provided with a screw hole (5) and a pin hole (6) at positions corresponding to the hexagon socket screw (3) and the pin (4), respectively. The screw hole (5) is a threaded hole. The hexagon socket screw (3) is threadedly matched with the screw hole (5). The pin (4) passes through the pin hole (6) and is embedded in the gear shaft (1) to complete the matching.

4. The central shaft split modular structure for a photothermal reducer according to claim 3 is characterized in that: The end surface of the gear shaft (1) is provided with a second screw hole (9) at a position corresponding to the hexagon socket screw (3), and the end surface of the gear shaft (1) is provided with a second pin hole (10) at a position corresponding to the pin (4). The second pin hole (10) is a threaded hole. The hexagon socket screw (3) is threadedly matched with the second screw hole (9). The pin (4) passes through the first pin hole (6) and is embedded in the second pin hole (10) to complete the assembly.

5. The central shaft split modular structure for a photothermal reducer according to claim 4 is characterized in that: The sides of the mounting hole are protruded and thickened near the second screw hole (9) and the second pin hole (10) to form a reinforced edge (11), so as to reinforce the positions where the hexagon socket screw (3) and the pin (4) are mounted, and the remaining positions are shrunk.

6. The central shaft split modular structure for a photothermal reducer according to claim 1 is characterized in that: The position where the end face of the gear shaft (1) and the flange plate (2) are in contact is recessed inward to form a tapered positioning groove (12); the position of the flange plate (2) corresponding to the positioning groove (12) is protruded outward to form a tapered positioning block (13); the positioning block (13) is embedded in the positioning groove (12) for assembly.

7. The central shaft split modular structure for a photothermal reducer according to claim 1 is characterized in that: A plurality of reducer connection holes (8) are evenly distributed in a circumferential array at the outer edge of the flange plate (2).

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