Speed reduction transmission structure

Abstract

The utility model discloses a speed reduction transmission structure which comprises a first shell, a second shell is fixedly connected to the first shell, a motor is arranged on the inner surface of the second shell, the output end of the motor is fixedly connected with a first gear, a first positioning shaft is fixedly connected to the first shell, and a second positioning shaft is fixedly connected to the second shell. The outer surface of the first positioning shaft is rotationally connected with a multi-linkage gear, and the first shell is fixedly connected with a second positioning shaft. Through the arrangement of a motor, a first gear, a multi-linkage gear and other structures, the motor is started to output torque, the torque is provided for the first gear, the first gear is meshed with the large diameter of a reference circle of the multi-linkage gear to achieve first-stage speed reduction, the small diameter of the reference circle of the multi-linkage gear is meshed with a second gear to achieve second-stage speed reduction, and then the torque is transmitted to a lead screw; the structure is mainly used for reducing the rotating speed and increasing the output torque, and compared with a plurality of single gears, the structure is more compact, and is suitable for application scenes with limited structure sizes.

Description

Technical Field

[0001] The utility model relates to the field of transmission structures, in particular to a reduction transmission structure. Background Art

[0002] The reduction gear is an important component that reduces the speed and increases the torque in the mechanical transmission system. Traditional reduction gears are usually single-gear gears, and multiple gears are required according to the required reduction ratio.

[0003] In the prior art, the traditional single-gear structure needs to be used in combination with multiple gears in order to achieve the reduction ratio, so the size is usually relatively large and occupies more space. It is not suitable for application scenarios with limited space or requiring miniaturized design. It has certain limitations, and therefore a reduction transmission structure is needed. Utility Model Content

[0004] The purpose of the utility model is to solve at least one of the technical problems existing in the prior art and to provide a reduction transmission structure. Through the arrangement of structures such as a motor, a first gear and a multi-gear, the motor output torque is started and provided to the first gear. The first gear is meshed with the major diameter of the pitch circle of the multi-gear to achieve a first-stage reduction. The minor diameter of the pitch circle of the multi-gear is meshed with the second gear to achieve a second-stage reduction, and then the reduction is transmitted to the screw rod. This structure is mainly used to reduce the rotation speed and increase the output torque. Compared with the use of multiple single-gears, its structure is more compact and suitable for application scenarios with limited structural dimensions.

[0005] The utility model also provides a reduction transmission structure as mentioned above, including a first shell, a second shell fixedly connected to the first shell, a motor is arranged on the inner surface of the second shell, a first gear is fixedly connected to the output end of the motor, a first positioning shaft is fixedly connected to the first shell, a multi-link gear is rotatably connected to the outer surface of the first positioning shaft, a second positioning shaft is fixedly connected to the first shell, a first bearing is arranged on the outer surface of the second positioning shaft, a screw is rotatably connected to the outer surface of the first bearing, and a second gear is fixedly connected to the outer surface of the screw.

[0006] According to the reduction transmission structure, the inner surface of the screw rod is rotationally connected to the second positioning shaft.

[0007] According to the reduction transmission structure, the motor is electrically connected to an external power source.

[0008] According to the reduction transmission structure, a second bearing is provided on the screw rod.

[0009] According to the reduction transmission structure, the multi-link gear is meshed with the first gear, so that the first gear can drive the multi-link gear to rotate.

[0010] According to the reduction transmission structure, the second gear is meshed with the multi-link gear, so that the multi-link gear can drive the multi-link gear to rotate.

[0011] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The utility model is further described below in conjunction with the accompanying drawings and embodiments;

[0013] Figure 1 This is an overall structural diagram of a reduction transmission structure of the utility model;

[0014] Figure 2 This is a schematic diagram of the structure of the motor part of a reduction transmission structure of the utility model;

[0015] Figure 3 This is a schematic structural diagram of a multi-gear portion of a reduction transmission structure of the utility model;

[0016] Figure 4 It is a structural schematic diagram of a first shell cross-section portion of a reduction transmission structure of the utility model.

[0017] Legend:

[0018] 1. First housing; 2. Second housing; 3. Motor; 4. First gear; 5. First positioning shaft; 6. Multi-link gear; 7. Second positioning shaft; 8. Screw; 9. First bearing; 10. Second gear; 11. Second bearing. DETAILED DESCRIPTION

[0019] This section will describe in detail the specific embodiments of the utility model. The preferred embodiments of the utility model are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the utility model, but it cannot be understood as a limitation on the protection scope of the utility model.

[0020] Reference Figure 1-4The utility model embodiment provides a reduction transmission structure, which includes a first shell 1, a second shell 2 is fixedly connected to the first shell 1, a motor 3 is arranged on the inner surface of the second shell 2, the motor 3 is electrically connected to an external power supply, a first gear 4 is fixedly connected to the output end of the motor 3, a first positioning shaft 5 is fixedly connected to the first shell 1, the outer surface of the first positioning shaft 5 is rotatably connected to a multi-link gear 6, the multi-link gear 6 is meshed with the first gear 4, a second positioning shaft 7 is fixedly connected to the first shell 1, a first bearing 9 is arranged on the outer surface of the second positioning shaft 7, a screw rod 8 is rotatably connected to the outer surface of the first bearing 9, a second gear 10 is fixedly connected to the outer surface of the screw rod 8, the second gear 10 is meshed with the multi-link gear 6, the inner surface of the screw rod 8 is rotatably connected to the second positioning shaft 7, and a second bearing 11 is arranged on the screw rod 8.

[0021] Working principle: the first gear 4 is meshed with the pitch circle large diameter teeth of the multi-link gear 6, the multi-link gear 6 is positioned by the first positioning shaft 5, the multi-link gear 6 is installed on the first housing 1 with an interference fit, the pitch circle small diameter teeth of the multi-link gear 6 are meshed with the second gear 10, the second positioning shaft 7 is installed on the first housing 1 with an interference fit, the first bearing 9 and the screw rod 8 are embedded therein as a transition fit, and the starting motor 3 is started to drive the first gear 4 to rotate, so that the rotating first gear 4 drives the meshing multi-link gear 6 to rotate, so that the rotating multi-link gear 6 can drive the second gear 10 to rotate, and then the rotating second gear 10 can drive the screw rod 8 to rotate, the first gear 4 is meshed with the pitch circle large diameter of the multi-link gear 6 to achieve a first-stage reduction, the pitch circle small diameter of the multi-link gear 6 is meshed with the second gear 10 to achieve a second-stage reduction, and then transmitted to the screw rod 8, this structure is mainly used to reduce the rotation speed and increase the output torque, compared with the use of multiple single-link gears, its structure is more compact, suitable for application scenarios with limited structural dimensions.

[0022] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments. Various changes can be made within the knowledge scope of ordinary technicians in the technical field without departing from the purpose of the present invention.

Claims

1. A reduction transmission structure, characterized in that: include: A first housing (1), wherein the first housing (1) is fixedly connected to a second housing (2), an inner surface of the second housing (2) is provided with a motor (3), an output end of the motor (3) is fixedly connected to a first gear (4), a first positioning shaft (5) is fixedly connected to the first housing (1), an outer surface of the first positioning shaft (5) is rotatably connected to a multi-link gear (6), a second positioning shaft (7) is fixedly connected to the first housing (1), an outer surface of the second positioning shaft (7) is provided with a first bearing (9), an outer surface of the first bearing (9) is rotatably connected to a screw rod (8), and an outer surface of the screw rod (8) is fixedly connected to a second gear (10).

2. A reduction transmission structure according to claim 1, characterized in that: The inner surface of the screw rod (8) is rotatably connected to the second positioning shaft (7).

3. A reduction transmission structure according to claim 1, characterized in that: The motor (3) is electrically connected to an external power source.

4. A reduction transmission structure according to claim 1, characterized in that: A second bearing (11) is arranged on the screw rod (8).

5. A reduction transmission structure according to claim 1, characterized in that: The multi-link gear (6) is meshed with the first gear (4).

6. A reduction transmission structure according to claim 1, characterized in that: The second gear (10) is meshed with the multi-link gear (6).

Images