Gearbox for sterilization

Abstract

The utility model relates to a gear box for sterilization, the gear box is connected with a motor, the gear box comprises an input stage supporting structure, an inner gear ring and a first-stage planetary reducing mechanism, one end of the inner gear ring is fixedly connected with the input stage supporting structure, the other end of the inner gear ring is fixedly connected with the first-stage planetary reducing mechanism, and the input stage supporting structure is connected with the motor. Compared with the prior art, the gear box has the advantages that the speed reduction structure of the gear box is more compact, the sterilization test efficiency of the gear box is improved, and the like.

Description

Technical Field

[0001] The utility model relates to a gear box, in particular to a gear box for sterilization. Background Art

[0002] The gearbox is an important component of the sterilization motor system. Its main function is to reduce the input speed of the motor while increasing the output torque. At the same time, for the sterilization gearbox, it must be guaranteed to have certain performance after a certain number of sterilization cycles. During the R&D test process, it is generally necessary to assemble the gearbox and the motor into a medical high-temperature sterilizer for testing. After a certain number of cycles, it is taken out for testing and the degree of change in its performance is determined.

[0003] However, the micro gearbox and motor are usually non-detachably connected as a whole. During the test, if the gearbox motor fails as a whole, the specific failure mode can only be determined by destructive disassembly. There is no condition to test and evaluate the performance of a single gearbox system.

[0004] Therefore, how to separate the gearbox structure from the motor structure and make them into a separate component so that the motor and gearbox can be tested separately becomes a technical problem that needs to be solved. Utility Model Content

[0005] The purpose of the utility model is to provide a sterilization gear box in order to overcome the defects of the prior art.

[0006] The purpose of the utility model can be achieved through the following technical solutions:

[0007] According to one aspect of the utility model, a gearbox for sterilization is provided, which is connected to a motor. The gearbox includes an input stage support structure, an inner gear ring and a first-stage planetary reduction mechanism. One end of the inner gear ring is fixedly connected to the input stage support structure, and the other end is fixedly connected to the first-stage planetary reduction mechanism. The input stage support structure is connected to the motor.

[0008] As a preferred technical solution, the input stage support structure includes a rear end cover, a motor gear and an input shaft, the rear end cover is rotationally connected to the input shaft, and one end of the input shaft is fixedly connected to the motor gear.

[0009] As a preferred technical solution, the rear end cover is rotatably connected to the input shaft via a bearing.

[0010] As a preferred technical solution, a boss is provided at the other end of the input shaft, and the boss is connected to the motor.

[0011] As a preferred technical solution, the boss is connected to the motor via a coupling.

[0012] As a preferred technical solution, the first-stage planetary reduction mechanism includes a front end cover and a gear assembly, and the gear assembly is rotationally connected to the front end cover via a bearing.

[0013] As a preferred technical solution, the gear assembly includes an output shaft support plate, a planetary gear, a cover plate and a pin shaft, one end of the pin shaft is fixed to the output shaft support plate, the planetary gear is mounted on the pin shaft, and the cover plate is fixed to the other end of the pin shaft.

[0014] As a preferred technical solution, one end of the pin shaft is fixed to the output shaft support plate by means of an interference fit.

[0015] As a preferred technical solution, there are three planetary wheels and three pin shafts.

[0016] As a preferred technical solution, the planetary gears are respectively meshed with the inner ring gear and the motor gear.

[0017] Compared with the prior art, the utility model has the following advantages:

[0018] 1) The utility model combines the input structure and output structure of the micro gearbox into a whole, thereby avoiding the problem that the whole machine function fails due to motor failure during the overall test of the gearbox motor, thereby failing to determine the sterilization failure form of the gearbox;

[0019] 2) In the sterilization test, the experimental micro sterilization gearbox designed by the utility model only needs to be placed in the sterilization box for testing, taken out after a certain sterilization cycle, and its performance changes are tested by using a coupling to connect the motor and the input shaft to drag and a torque meter to twist the output shaft;

[0020] 3) The utility model makes the gearbox reduction structure more compact and improves the sterilization test efficiency of the gearbox. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0022] Figure 2 It is a cross-sectional view of the utility model;

[0023] Figure 3 This is a schematic diagram of the input stage support structure of the utility model;

[0024] Figure 4 This is a schematic diagram of a first-stage planetary reduction mechanism of the utility model;

[0025] Among them, 1. input stage support structure; 101. rear end cover; 102. motor gear; 103. input shaft; 2. inner ring gear; 3. first-stage planetary reduction mechanism; 301. front end cover; 302. gear assembly; 3021. output shaft support plate; 3022. planetary gear; 3023. cover plate; 3024. pin shaft; 4. boss. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of them. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.

[0027] like Figure 1-4 As shown, an embodiment of the utility model provides a gearbox for sterilization, which is connected to a motor. The gearbox includes an input stage support structure 1, an inner gear ring 2 and a first-stage planetary reduction mechanism 3. One end of the inner gear ring 2 is fixedly connected to the input stage support structure 1, and the other end is fixedly connected to the first-stage planetary reduction mechanism 3. The input stage support structure 1 is connected to the motor.

[0028] like Figure 1-4 As shown, the input stage supporting structure 1 includes a rear end cover 101 , a motor gear 102 and an input shaft 103 . The rear end cover 101 is rotatably connected to the input shaft 103 , and one end of the input shaft 103 is fixedly connected to the motor gear 102 .

[0029] like Figure 1-4 As shown, the rear end cover 101 is rotatably connected to the input shaft 103 via a bearing, and a boss 4 is provided at the other end of the input shaft 103. The boss 4 is connected to the motor, and the boss 4 is connected to the motor via a coupling for testing after sterilization.

[0030] like Figure 1-4 As shown, the first-stage planetary reduction mechanism 3 includes a front end cover 301 and a gear assembly 302, and the gear assembly 302 is rotationally connected to the front end cover 301 through a bearing.

[0031] like Figure 1-4 As shown, the gear assembly 302 includes an output shaft support plate 3021, a planetary gear 3022, a cover plate 3023 and a pin 3024, one end of the pin 3024 is fixed on the output shaft support plate 3021, the planetary gear 3022 is installed on the pin 3024, and the cover plate 3023 is fixed on the other end of the pin 3024.

[0032] like Figure 1-4As shown, one end of the pin shaft 3024 is fixed on the output shaft support plate 3021 by means of interference fit, three planetary gears 3022 are provided, and three pin shafts 3024 are provided.

[0033] like Figure 1-4 As shown, the planetary gear 3022 is respectively meshed with the inner gear ring 2 and the motor gear 102 to transmit power to realize the first-stage reduction function of the gear box, and the gears are all grease lubricated.

[0034] In summary, the utility model provides a sterilization gearbox that separates the gear system from the motor system for separate testing. The input structure and output structure of the micro gearbox are designed as a whole, which avoids the problem of failure of the entire machine due to motor failure during the overall test of the gearbox motor, thereby making it impossible to determine the sterilization failure form of the gearbox. In the sterilization test, it is only necessary to put the experimental micro sterilization gearbox designed by the utility model into the sterilization box for testing, take it out after a certain sterilization cycle, and use a coupling to connect the motor to drag and a torque meter to twist to test its performance. The above structure makes the gearbox reduction structure more compact and improves the efficiency of the sterilization test of the gearbox during the research and development process.

[0035] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can easily think of various equivalent modifications or replacements within the technical scope disclosed by the utility model, and these modifications or replacements should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A gear box for sterilization, the gear box is connected to a motor, characterized in that: The gearbox comprises an input stage support structure (1), an inner gear ring (2) and a first-stage planetary reduction mechanism (3); one end of the inner gear ring (2) is fixedly connected to the input stage support structure (1), and the other end is fixedly connected to the first-stage planetary reduction mechanism (3); and the input stage support structure (1) is connected to a motor; The input stage support structure (1) comprises a rear end cover (101), a motor gear (102) and an input shaft (103); the rear end cover (101) is rotatably connected to the input shaft (103); one end of the input shaft (103) is fixedly connected to the motor gear (102); The other end of the input shaft (103) is provided with a boss (4), and the boss (4) is connected to the motor; the boss (4) is connected to the motor via a coupling; the input structure and the output structure of the gear box are designed to be integrated into a whole; the sterilized gear box is placed in a sterilization box for testing, taken out after a certain sterilization cycle, and the motor and the input shaft are connected by a coupling.

2. A sterilization gearbox according to claim 1, characterized in that: The rear end cover (101) is rotatably connected to the input shaft (103) via a bearing.

3. A sterilization gearbox according to claim 1, characterized in that: The first-stage planetary reduction mechanism (3) comprises a front end cover (301) and a gear assembly (302), wherein the gear assembly (302) is rotationally connected to the front end cover (301) via a bearing.

4. A sterilization gearbox according to claim 3, characterized in that: The gear assembly (302) comprises an output shaft support disk (3021), a planetary gear (3022), a cover plate (3023) and a pin shaft (3024); one end of the pin shaft (3024) is fixed to the output shaft support disk (3021), the planetary gear (3022) is mounted on the pin shaft (3024), and the cover plate (3023) is fixed to the other end of the pin shaft (3024).

5. A sterilization gearbox according to claim 4, characterized in that: One end of the pin shaft (3024) is fixed to the output shaft support plate (3021) by means of an interference fit.

6. A sterilization gearbox according to claim 5, characterized in that: There are three planetary wheels (3022) and three pin shafts (3024).

7. A sterilization gearbox according to claim 4, characterized in that: The planetary gear (3022) is meshed with the inner gear ring (2) and the motor gear (102) respectively.

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