Torque transmission structure of speed reducer

Abstract

The utility model relates to the technical field of mechanical transmission, in particular to a speed reducer torque transmission structure which comprises a bottom shell and a driving motor, a plurality of installation grooves are formed in the periphery of the outer side of the bottom shell, fixing bolts are installed on the periphery of the upper end of the bottom shell in a threaded mode, and the output end of the driving motor penetrates through the bottom shell and is fixedly connected with a first rotating rod. A second small bevel gear is connected to the rear portion of the outer surface of the medium bevel gear in a meshed mode, a third rotating rod is fixedly connected to the middle of the right end of the second small bevel gear in a penetrating mode, a connecting shaft is fixedly connected to the left end of the third rotating rod, and a plurality of screw holes are formed in the periphery of the upper end of the bottom shell. According to the torque transmission structure of the speed reducer, the structural stability is enhanced through reasonable bolt connection and bearing configuration, efficient speed reduction and torque increase are achieved through multi-stage gear transmission, and the problems that a traditional structure is prone to loosening and low in transmission efficiency, and single-stage speed reduction cannot meet the large torque requirement easily are solved.

Description

Technical Field

[0001] This utility model relates to the field of mechanical transmission technology, and in particular to a torque transmission structure for a speed reducer. Background Technology

[0002] In mechanical transmission systems, speed reducers are common power transmission devices. Their function is to convert high-speed motors and other power sources to low-speed motors, and correspondingly increase torque to meet the needs of different working scenarios. Traditional speed reducer torque transmission structures typically employ multi-stage gear drives, achieving speed reduction and torque increase through the meshing of gears with different diameters. However, existing speed reducer torque transmission structures have some shortcomings in practical applications: poor structural stability, prone to loosening and vibration during long-term operation, and existing single-stage reduction structures are insufficient to meet high torque requirements. In multi-stage transmissions, improper bearing selection can easily lead to gear misalignment due to axial forces, reducing transmission efficiency. Therefore, we introduce a new speed reducer torque transmission structure. Utility Model Content

[0003] The main objective of this invention is to provide a torque transmission structure for a speed reducer, which can effectively solve the problems in the background art.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0005] A torque transmission structure for a speed reducer includes a base housing and a drive motor. The base housing has several mounting slots around its outer perimeter. Several fixing bolts are threaded onto the upper perimeter of the base housing. An upper housing is threaded onto the base housing via these fixing bolts. The output end of the drive motor passes through the base housing and is fixedly connected to a first rotating rod. A large helical gear meshes with the left side of the outer surface of the first rotating rod. A small helical gear meshes with the rear side of the outer surface of the large helical gear. A second rotating rod is fixedly connected to the middle right end of the small helical gear. A medium helical gear is fixedly connected to the outer surface of the second rotating rod. A small helical gear meshes with the rear side of the outer surface of the medium helical gear. A third rotating rod is fixedly connected to the middle right end of the small helical gear. A connecting shaft is fixedly connected to the left end of the third rotating rod. Several threaded holes are formed around the upper perimeter of the base housing.

[0006] Preferably, the fixing bolts are evenly distributed around the upper end of the bottom shell, and the position and size of the fixing bolts are matched one-to-one with the position and size of the screw holes.

[0007] Preferably, the first rotating rod is rotatably connected to the bottom shell through a deep groove ball bearing, and the diameter of the first rotating rod is larger than the root circle diameter of the large helical gear.

[0008] Preferably, the two ends of the second rotating rod are rotatably connected to the bottom shell and the upper shell respectively through tapered roller bearings.

[0009] Preferably, the right end of the third rotating rod is rotatably connected to the upper shell via a self-aligning ball bearing.

[0010] Preferably, the protruding end of the connecting shaft is rotatably connected to the upper shell via a bearing.

[0011] Compared with the prior art, the present invention has the following beneficial effects:

[0012] 1. In this utility model, the fixing bolts are evenly distributed around the upper part of the bottom shell and precisely matched with the screw holes to achieve a firm connection between the bottom shell and the upper shell, thus creating a stable space for the internal transmission components. At the same time, each rotating rod and the shell are selected with appropriate bearings according to the force characteristics. For example, tapered roller bearings are used at both ends of the second rotating rod, which can effectively withstand radial and axial loads, avoid structural loosening and vibration caused by force, and greatly enhance the overall structural stability.

[0013] 2. In this utility model, by adopting a multi-stage gear transmission design, the large helical gear and the first small helical gear, and the medium helical gear and the second small helical gear reduce the torque twice, effectively amplifying the output torque of the motor and reducing the speed, so as to meet the demand for high torque power output. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of a speed reducer torque transmission structure according to the present invention;

[0015] Figure 2 This is a partial cross-sectional schematic diagram of the torque transmission structure of a speed reducer according to the present invention;

[0016] Figure 3 This is a partial structural diagram of a speed reducer torque transmission structure according to the present invention;

[0017] Figure 4 This is a detailed enlarged structural diagram of point A of the torque transmission structure of the speed reducer according to this utility model.

[0018] In the diagram: 1. Bottom shell; 2. Top shell; 3. Fixing bolt; 4. Mounting slot; 5. Drive motor; 6. First rotating rod; 7. Large helical gear; 8. Screw hole; 9. Second rotating rod; 10. First small helical gear; 11. Medium helical gear; 12. Third rotating rod; 13. Second small helical gear; 14. Connecting shaft. Detailed Implementation

[0019] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0020] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model 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 this utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0021] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" can be 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; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0022] Please see Figure 1-4 This utility model provides a technical solution:

[0023] A torque transmission structure for a speed reducer includes a base shell 1 and a drive motor 5. Several mounting slots 4 are formed around the outer perimeter of the base shell 1. Several fixing bolts 3 are threaded onto the upper perimeter of the base shell 1. An upper shell 2 is threaded onto the base shell 1 via the fixing bolts 3. The output end of the drive motor 5 passes through the base shell 1 and is fixedly connected to a first rotating rod 6. A large helical gear 7 is meshed with the left side of the outer surface of the first rotating rod 6. A first small helical gear 10 is meshed with the rear side of the outer surface of the large helical gear 7. A second rotating rod 9 is fixedly connected to the middle right end of the first small helical gear 10. A medium helical gear 11 is fixedly connected to the outer surface of the second rotating rod 9. A second small helical gear 13 is meshed with the rear side of the outer surface of the medium helical gear 11. A third rotating rod 12 is fixedly connected to the middle right end of the second small helical gear 13. A connecting shaft 14 is fixedly connected to the left end of the third rotating rod 12. Several screw holes 8 are formed around the upper perimeter of the base shell 1.

[0024] In this embodiment, the fixing bolts 3 are evenly distributed around the upper end of the bottom shell 1, and the position and size of the fixing bolts 3 are matched with the position and size of the screw holes 8. The first rotating rod 6 is rotatably connected to the bottom shell 1 through a deep groove ball bearing, and the diameter of the first rotating rod 6 is larger than the root circle diameter of the large helical gear 7. The two ends of the second rotating rod 9 are rotatably connected to the bottom shell 1 and the upper shell 2 respectively through tapered roller bearings. The right end of the third rotating rod 12 is rotatably connected to the upper shell 2 through a self-aligning ball bearing. The protruding end of the connecting shaft 14 is rotatably connected to the upper shell 2 through a bearing.

[0025] Through the above scheme: In the torque transmission structure of this reducer, the fixing bolts 3 are evenly distributed around the upper end of the bottom shell 1 and are adapted to the screw holes 8, which firmly connect the bottom shell 1 and the upper shell 2, providing stable space for the internal transmission components. The power of the drive motor 5 is output through the first rotating rod 6. The deep groove ball bearing reduces the rotational friction between it and the bottom shell 1. The diameter of the first rotating rod 6 is larger than the root circle diameter of the large helical gear 7, which enhances the transmission stability. The power is transmitted step by step through the large helical gear 7, the first small helical gear 10, the second rotating rod 9, the medium helical gear 11, the second small helical gear 13, and the third rotating rod 12. Adaptive bearings such as tapered roller bearings and self-aligning ball bearings ensure the stable operation of each rotating rod. Finally, the power is output through the connecting shaft 14, realizing stable torque transmission and deceleration and torque increase, while enhancing the structural strength and operational stability.

[0026] It should be noted that this utility model is a torque transmission structure for a speed reducer. In this torque transmission structure, the overall structure consists of key components such as a bottom shell 1, an upper shell 2, fixing bolts 3, mounting grooves 4, and a drive motor 5. Firstly, the bottom shell 1 and the upper shell 2 are connected by fixing bolts 3. The fixing bolts 3 are evenly distributed around the upper edge of the bottom shell 1, and their positions and dimensions are matched one-to-one with the screw holes 8 opened around the upper edge of the bottom shell 1. This design ensures the stability of the connection between the bottom shell 1 and the upper shell 2, providing a stable working environment for the internal components. Simultaneously, the mounting grooves 4 on the outer perimeter of the bottom shell 1 facilitate the installation and fixation of the entire structure. When the drive motor... After the motor 5 starts, its output end outputs power. The output end of the drive motor 5 passes through the bottom shell 1 and is fixedly connected to the first rotating rod 6. The first rotating rod 6 and the bottom shell 1 are rotatably connected by a deep groove ball bearing. This reduces the frictional resistance during rotation, allowing the first rotating rod 6 to rotate smoothly under the drive of the motor. When the first rotating rod 6 rotates, the large helical gear 7 meshing with the left side of its outer surface rotates accordingly. The large helical gear 7 transmits torque to the first small helical gear 10 meshing with the rear side of its outer surface through the gear meshing principle. Since the diameter of the first small helical gear 10 is smaller than that of the large helical gear 7, according to the reduction principle of gear transmission, the torque is transmitted... During the process, the first deceleration is achieved while the torque is increased. The first small helical gear 10 is fixedly connected to the second rotating rod 9. The two ends of the second rotating rod 9 are rotatably connected to the bottom shell 1 and the upper shell 2 respectively through tapered roller bearings. This bearing configuration can withstand large radial and axial loads, ensuring the stable rotation of the second rotating rod 9. When the second rotating rod 9 rotates, the medium-sized helical gear 11 fixedly connected to its outer surface also rotates. The medium-sized helical gear 11 then transmits the torque to the second small helical gear 13 meshing with its rear outer surface. Similarly, since the diameter of the second small helical gear 13 is smaller than that of the medium-sized helical gear 11, a second deceleration and torque increase is achieved. Gear 13 is fixedly connected to the third rotating rod 12. The right end of the third rotating rod 12 is rotatably connected to the upper shell 2 through a self-aligning ball bearing. The self-aligning ball bearing can automatically align itself to adapt to a certain axial deviation and ensure the stable operation of the third rotating rod 12. The left end of the third rotating rod 12 is fixedly connected to a connecting shaft 14. The extended end of the connecting shaft 14 is rotatably connected to the upper shell 2 through a bearing. Finally, the torque after two reductions and torque amplifications is output through the connecting shaft 14 to provide the required power for subsequent working parts. The whole process is achieved through multi-stage gear transmission, which amplifies the output torque of the drive motor 5 and reduces the speed, meeting the power output requirements in practical applications.

[0027] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A speed reducer torque transmission structure comprising a bottom case (1) and a driving motor (5), characterized in that: The outer side of the bottom shell (1) is provided with a plurality of installation grooves (4), the upper end of the bottom shell (1) is provided with a plurality of fixed bolts (3) which are installed by threads, the bottom shell (1) is provided with an upper shell (2) by the fixed bolts (3), the output end of the driving motor (5) penetrates the bottom shell (1) and is fixedly connected with a first rotating rod (6), the outer surface of the left part of the first rotating rod (6) is engagedly connected with a large bevel gear (7), the outer surface of the rear part of the large bevel gear (7) is engagedly connected with a first small bevel gear (10), the right end of the first small bevel gear (10) is fixedly connected with a second rotating rod (9) by insertion, the outer surface of the second rotating rod (9) is fixedly connected with a medium bevel gear (11), the outer surface of the rear part of the medium bevel gear (11) is engagedly connected with a second small bevel gear (13), the right end of the second small bevel gear (13) is fixedly connected with a third rotating rod (12) by insertion, the left end of the third rotating rod (12) is fixedly connected with a connecting shaft (14), the upper end of the bottom shell (1) is provided with a plurality of screw holes (8).

2. The torque transmission structure of a speed reducer according to claim 1, characterized by: The fixed bolts (3) are uniformly distributed along the upper end of the bottom shell (1), and the position and size of the fixed bolts (3) are matched with the position and size of the screw holes (8).

3. The torque transfer structure of a speed reducer according to claim 1, characterized by: The penetrating position of the first rotating rod (6) and the bottom shell (1) is rotatably connected by a deep groove ball bearing, and the diameter of the first rotating rod (6) is greater than the dedendum circle diameter of the large bevel gear (7).

4. The torque transfer structure of a speed reducer according to claim 1, characterized by: The two ends of the second rotating rod (9) are rotatably connected with the bottom shell (1) and the upper shell (2) by tapered roller bearings.

5. The torque transfer structure of a speed reducer according to claim 1, characterized by: The right end of the third rotating rod (12) is rotatably connected with the upper shell (2) by a self-aligning ball bearing.

6. The torque transfer structure of a speed reducer according to claim 1, characterized by: The protruding end of the connecting shaft (14) is rotatably connected with the upper shell (2) by a bearing.

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