Gear transmission structure based on clearance elimination

Abstract

The utility model relates to a gear transmission structure based on clearance elimination, which comprises a driving component, a shaft, a bearing seat component and a gear set, the shaft is arranged in the bearing seat component, one end of the shaft is provided with the driving component, the other end of the shaft is provided with the gear set, the gear set comprises a fixed gear and an adjusting gear, and the fixed gear is movably connected with the adjusting gear. According to the utility model, the problems of following errors, shaking and the like are solved, so that the movement precision of the gamma knife is improved, and the treatment precision and effect are improved.

Description

Technical Field

[0001] The utility model relates to the medical field, in particular to a gear transmission structure based on backlash elimination. Background Art

[0002] Gamma Knife is a large medical device that integrates stereotactic technology and radiosurgery technology, mainly used to treat craniocerebral diseases and body tumors. The current development of technology requires higher and higher treatment accuracy of Gamma Knife. Among the many factors that affect the treatment accuracy of Gamma Knife, the motion error of the device itself is undoubtedly the most important factor. Many transmission structures and position detections in the transmission system of Gamma Knife use gear transmission or rack and pinion transmission. However, in the process of gear transmission, due to the backlash of meshing, tracking errors and shaking occur during the movement of the mechanism, which seriously affects the transmission accuracy.

[0003] Therefore, in order to improve the treatment accuracy of the gamma knife, it is necessary to provide a gear anti-backlash structure to solve the tracking error, shaking and other phenomena caused by backlash during gear transmission, thereby improving the movement accuracy of the gamma knife and improving the treatment accuracy and effect. Utility Model Content

[0004] In order to solve the above-mentioned technical problems existing in the background technology, the utility model provides a gear transmission structure based on backlash elimination, which replaces a single gear in the gear transmission with a combination of two gears with the same module and number of teeth, and eliminates the backlash between the two meshing gears by staggering the teeth of the two gears, thereby solving the problems of tracking error and shaking, thereby improving the movement accuracy of the gamma knife and improving the treatment accuracy and effect.

[0005] The technical solution of the utility model is: the utility model is a gear transmission structure based on eliminating backlash, and its special feature is that: the gear transmission structure based on eliminating backlash includes a driving component, a shaft, a bearing seat component and a gear set, the shaft is arranged in the bearing seat assembly, a driving component is arranged at one end of the shaft, and a gear set is arranged at the other end, the gear set includes a fixed gear and an adjusting gear, and the fixed gear and the adjusting gear are movably connected.

[0006] Furthermore, a connecting hole is provided on the fixed gear, and a waist-shaped hole is correspondingly provided on the adjusting gear, and the connecting hole and the waist-shaped hole are connected by a fixing screw.

[0007] Furthermore, there are multiple connecting holes, which are evenly distributed on the fixed gear, and there are correspondingly multiple waist-shaped holes, which are evenly distributed on the adjusting gear.

[0008] Furthermore, there are three connecting holes and three waist-shaped holes.

[0009] Furthermore, the fixed gear and the adjusting gear have the same module and the same number of teeth.

[0010] Furthermore, a locking nut for locking the gear set is provided at the end of the shaft.

[0011] Furthermore, the bearing seat assembly includes a bearing seat and a bearing, the shaft is arranged in the bearing seat, and the bearing is arranged between the shaft and the bearing seat.

[0012] Furthermore, the driving assembly includes a motor and a reducer, and the motor is connected to the shaft via the reducer.

[0013] The utility model provides a gear transmission structure based on backlash elimination, which replaces a single gear on the gear transmission with a combination of two gears with the same module and number of teeth, and eliminates the backlash between the two meshing gears by mutually staggering the teeth of the two gears, thereby solving the problems of follow-up error, shaking, etc., thereby improving the movement accuracy of the gamma knife and improving the treatment accuracy and effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of the utility model;

[0015] Figure 2 It is a schematic diagram of the gear set structure of the utility model;

[0016] Figure 3 It is a schematic diagram of the fixed gear structure of the utility model;

[0017] Figure 4 This is a schematic diagram of the adjusting gear structure of the utility model;

[0018] Figure 5 It is a schematic diagram of the meshing of the gear set and the meshing gear of the utility model;

[0019] Figure 6 yes Figure 5 A magnified schematic diagram of part A.

[0020] The following are the descriptions of the reference numerals:

[0021] 1. Drive assembly; 2. Shaft; 3. Bearing seat assembly; 4. Gear assembly; 5. Locking nut; 6. Connecting hole; 7. Waist-shaped hole; 8. Gear

[0022] 4.1. Fixing gear; 4.2. Adjusting gear; 4.3. Fixing screw. DETAILED DESCRIPTION

[0023] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.

[0024] See also Figure 1The structure of the specific embodiment of the utility model includes a driving assembly 1, a shaft 2, a bearing seat assembly 3, a gear set 4 and a locking nut 5. One end of the shaft 2 is connected to the driving assembly 1; the bearing seat assembly 3 is arranged on the shaft 2; the gear set 4 is arranged at the other end of the shaft 2; the locking nut 5 is arranged at the end of the shaft 2 to limit the relative position of the gear set 4 and the shaft 2.

[0025] The bearing seat assembly 3 includes a bearing seat and a bearing. The shaft 2 is arranged in the bearing seat, and a bearing is arranged between the shaft 2 and the bearing seat.

[0026] The driving assembly 1 includes a motor and a reducer, and the motor is connected to the shaft 2 via the reducer.

[0027] See also Figure 2 , 3 4. The gear set 4 of the utility model is mainly composed of a fixed gear 4.1, an adjusting gear 4.2 and a fixing screw 4.3. The fixed gear 4.1 is provided with a connecting hole 6 fixed to the adjusting gear 4.2. The adjusting gear 4.2 is provided with a waist-shaped hole 7 corresponding to the connecting hole 6, which is used to adjust the relative position of the fixed gear 4.1 and the adjusting gear 4.2. The fixing screw 4.3 connects the fixed gear 4.1 and the adjusting gear 4.2 through the connecting hole 6 and the waist-shaped hole 7; there are multiple connecting holes 6, which are evenly distributed on the fixed gear 4.1, and there are multiple waist-shaped holes 7, which are evenly distributed on the adjusting gear 4.2. In this embodiment, there are 3 connecting holes 6 and 3 waist-shaped holes 7, and the module and the number of teeth of the fixed gear 4.1 and the adjusting gear 4.2 are the same.

[0028] See also Figure 5 During the installation of the utility model, the relative positions of the fixed gear 4.1 and the adjusting gear 4.2 are adjusted, and the backlash between the gears or the racks is adjusted to a suitable level, that is, the backlash between the gear set 4 and the gear 8 meshing with it is eliminated by mutually misaligning the teeth of the fixed gear 4.1 and the adjusting gear 4.2, and then the fixing screw 4.3 is tightened.

[0029] See also Figure 6 By adjusting the angle of mutual misalignment between the teeth of the fixed gear 4.1 and the adjusting gear 4.2, the backlash of the gear meshing between the gear set 4 and the gear 8 is eliminated.

[0030] The content of the utility model and the technical content not specifically described in the above embodiments are the same as the prior art. The above are only specific implementation methods disclosed by the utility model, but the protection scope disclosed by the utility model is not limited thereto. The protection scope disclosed by the utility model shall be subject to the protection scope of the claims.

Claims

1. A gear transmission structure based on backlash elimination, characterized in that: The gear transmission structure based on anti-backlash includes a driving component, a shaft, a bearing seat component and a gear group. The shaft is arranged in the bearing seat assembly. The driving component is arranged at one end of the shaft, and the gear group is arranged at the other end. The gear group includes a fixed gear and an adjusting gear. The fixed gear and the adjusting gear are movably connected. A connecting hole is arranged on the fixed gear, and a waist-shaped hole is correspondingly arranged on the adjusting gear. The connecting hole and the waist-shaped hole are connected by a fixing screw.

2. The gear transmission structure based on backlash elimination according to claim 1, characterized in that: There are multiple connecting holes, which are evenly distributed on the fixed gear, and there are correspondingly multiple waist-shaped holes, which are evenly distributed on the adjusting gear.

3. The gear transmission structure based on backlash elimination according to claim 2 is characterized in that: There are three connecting holes and three waist-shaped holes.

4. The gear transmission structure based on backlash elimination according to claim 3 is characterized in that: The fixed gear and the adjusting gear have the same module and the same number of teeth.

5. The gear transmission structure based on backlash elimination according to any one of claims 1 to 4, characterized in that: The shaft end is provided with a locking nut for locking the gear set.

6. The gear transmission structure based on backlash elimination according to claim 5, characterized in that: The bearing seat assembly comprises a bearing seat and a bearing. The shaft is arranged in the bearing seat, and a bearing is arranged between the shaft and the bearing seat.

7. The gear transmission structure based on backlash elimination according to claim 6, characterized in that: The driving assembly includes a motor and a reducer, and the motor is connected to the shaft via the reducer.

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