Gear shaft with clutch and operation method
By integrating the clutch with the gear shaft, the combined structure of ring gear, roller and spring is used to solve the problem of insufficient space in small electric mechanisms, and the protective transmission system under abnormal torque conditions is realized, which has the advantages of small size, stable operation and high accuracy.
Patent Information
- Application Number
- CN202411897783.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-23
- Publication Date
- 2025-04-01
AI Technical Summary
When used on small electric mechanisms, existing friction clutches may be insufficient space due to their large size, which limits the design of the electric mechanism.
The clutch is integrated with the gear shaft. The clutch is installed inside the gear shaft and consists of a ring gear, roller and spring. The roller is squeezed onto the ring gear through the spring, so that the rotating shaft and ring gear rotate relative to each other when the torque is too large, preventing the mechanism from being damaged.
It realizes the role of protecting the rest of the mechanisms in the transmission system without occupying additional space, and has the advantages of small size, stable operation and high accuracy.
Smart Images
Figure CN119737433A_ABST
Abstract
Description
Technical Field
[0001] The invention belongs to the technical field of aviation motor design and relates to a gear shaft with a clutch and an operating method. Background Art
[0002] Some reducers used in aircraft need to be installed with a clutch. When there is too much torque on the output shaft, the clutch will disengage the driving mechanism and the driven mechanism to prevent damage to the mechanism. The friction clutch commonly used at present is relatively large in size. When used on a small electric mechanism, there may be insufficient space, which limits the design of the electric mechanism. The present invention integrates the clutch with the gear shaft. The clutch is installed inside the gear shaft. No additional space is required, which is more conducive to the design of the electric mechanism and is applied to the small electric mechanism of the aircraft. Summary of the invention
[0003] The present invention is a gear shaft with a clutch. When the gear shaft is subjected to excessive torque, the shaft and the gear ring rotate relative to each other. When the torque returns to normal, the shaft and the gear ring no longer rotate relative to each other and transmit the torque normally. The structure has the characteristics of small size, stable operation and high precision.
[0004] The technical solution of the present invention is as follows: a gear shaft with a clutch, comprising a rotating shaft 1, a gear ring 2, a pressure plate 3, a countersunk screw 4, a roller 5 and a spring 6; the spring 6 is installed in the groove of the rotating shaft 1, the gear ring 2 is sleeved on the rotating shaft 1, and a plurality of rollers 5 are evenly distributed in the groove of the rotating shaft 1 and are squeezed on the gear ring 2 by the spring 6; two pressure plates 3 are fixed on the rotating shaft 1 by countersunk screws 4, and the rollers 5 and the gear ring 2 are clamped between the two pressure plates.
[0005] The upper part of the rotating shaft 1 is a slender shaft, and the lower part is a disc with grooves. There are threaded holes distributed between the grooves for installing countersunk screws 4.
[0006] The rotating shaft 5 is a columnar structure and is vertically placed in the groove of the rotating shaft 1 .
[0007] The roller 5 is fitted with the groove in a clearance, and the height cannot exceed the thickness of the gear.
[0008] The elastic force of the spring 6 is determined according to the protection torque of the gear shaft.
[0009] The pressing plate 3 is in the shape of a disk and has four tapered holes on which countersunk screws 4 are installed. The end surface of the countersunk screws 4 is lower than or flush with the end surface of the pressing plate 3.
[0010] The outer diameter of the gear shaft is less than 30 mm.
[0011] The operation method of the gear shaft with clutch is that the spring 6 squeezes the roller 5 onto the inner ring of the gear ring 2, so that the rotating shaft 1 and the gear ring 2 are locked, and the torque on the gear ring 2 is transmitted to the rotating shaft 1. When the torque on the rotating shaft 1 and the gear ring 2 is too large, the roller 5 rolls, and the gear ring 2 and the rotating shaft 1 rotate relative to each other to prevent the other mechanisms in the transmission system from being damaged; after the torque is reduced, the roller 5 stops rolling, so that the gear ring 2 and the rotating shaft 1 are locked, and the gear shaft transmits the torque normally.
[0012] The advantages of the present invention are: by integrating the clutch into the structure inside the gear, the shaft and the gear ring will slide relative to each other under abnormal torque conditions, and the torque transmitted on the shaft will be reduced, which plays a role in protecting the remaining mechanisms in the transmission system. The clutch is composed of a gear ring, a roller and a spring, and is installed in the disc of the shaft. Compared with the traditional friction clutch, this structure has the advantages of smaller size, longer life and higher rotation accuracy. Small size, stable operation and high precision. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 It is a structural schematic diagram of the present invention;
[0014] Figure 2 It is a cross-sectional view of the present invention;
[0015] In the figure, 1-shaft, 2-gear ring, 3-pressure plate, 4-countsunk screw, 5-roller, 6-spring. DETAILED DESCRIPTION
[0016] The present invention is further described below in conjunction with the accompanying drawings:
[0017] like Figure 1 , Figure 2 As shown: a gear shaft with a clutch, including a rotating shaft 1, a gear ring 2, a pressure plate 3, a countersunk screw 4, a roller 5 and a spring 6; the spring 6 is installed in the groove of the rotating shaft 1, the gear ring 2 is sleeved on the rotating shaft 1, and multiple rollers 5 are evenly distributed in the groove of the rotating shaft 1 and are squeezed on the gear ring 2 by the spring 6; two pressure plates 3 are fixed on the rotating shaft 1 by countersunk screws 4, and the rollers 5 and the gear ring 2 are clamped between the two pressure plates.
[0018] The upper part of the rotating shaft 1 is a slender shaft, and the lower part is a disc with grooves. There are threaded holes distributed between the grooves for installing countersunk screws 4.
[0019] The rotating shaft 5 is a columnar structure and is vertically placed in the groove of the rotating shaft 1 .
[0020] The roller 5 is fitted with the groove in a clearance, and the height cannot exceed the thickness of the gear.
[0021] The elastic force of the spring 6 is determined according to the protection torque of the gear shaft.
[0022] The pressing plate 3 is in the shape of a disk and has four tapered holes on which countersunk screws 4 are installed. The end surface of the countersunk screws 4 is lower than or flush with the end surface of the pressing plate 3.
[0023] The outer diameter of the gear shaft is less than 30 mm.
[0024] The operation method of the gear shaft with clutch is that the spring 6 squeezes the roller 5 onto the inner ring of the gear ring 2, so that the rotating shaft 1 and the gear ring 2 are locked, and the torque on the gear ring 2 is transmitted to the rotating shaft 1. When the torque on the rotating shaft 1 and the gear ring 2 is too large, the roller 5 rolls, and the gear ring 2 and the rotating shaft 1 rotate relative to each other to prevent the other mechanisms in the transmission system from being damaged; after the torque is reduced, the roller 5 stops rolling, so that the gear ring 2 and the rotating shaft 1 are locked, and the gear shaft transmits the torque normally.
Claims
1. A gear shaft with a clutch, characterized in that: The invention comprises a rotating shaft (1), a gear ring (2), a pressure plate (3), a countersunk screw (4), a roller (5) and a spring (6); the spring (6) is installed in a groove of the rotating shaft (1), the gear ring (2) is sleeved on the rotating shaft (1), and a plurality of rollers (5) are evenly distributed in the groove of the rotating shaft (1) and are pressed on the gear ring (2) by the spring (6); two pressure plates (3) are fixed on the rotating shaft (1) by countersunk screws (4), and the rollers (5) and the gear ring (2) are clamped between the two pressure plates.
2. The gear shaft with clutch according to claim 1, characterized in that: The upper part of the rotating shaft (1) is a slender shaft, and the lower part is a disc with grooves. Threaded holes are distributed between the grooves for installing countersunk screws (4).
3. The gear shaft with clutch according to claim 1, characterized in that: The rotating shaft (5) is a columnar structure and is vertically placed in the groove of the rotating shaft (1).
4. The gear shaft with clutch according to claim 1, characterized in that: The roller (5) is loosely matched with the groove, and its height cannot exceed the thickness of the gear.
5. A gear shaft with a clutch as claimed in claim 1, characterized in that: The elastic force of the spring (6) is determined according to the protection torque of the gear shaft.
6. The gear shaft with clutch according to claim 1, characterized in that: The pressing plate (3) is in the shape of a disk and has four tapered holes on which countersunk screws (4) are installed. The end surface of the countersunk screws (4) is lower than or flush with the end surface of the pressing plate (3).
7. The gear shaft with clutch according to claim 1, characterized in that: The outer diameter of the gear shaft is less than 30 mm.
8. The method for operating a gear shaft with a clutch according to claim 1, characterized in that: The spring (6) presses the roller (5) onto the inner ring of the gear ring (2), causing the rotating shaft (1) and the gear ring (2) to lock, and transmits the torque on the gear ring (2) to the rotating shaft (1). When the torque on the rotating shaft (1) and the gear ring (2) is too large, the roller (5) rolls, and the gear ring (2) and the rotating shaft (1) rotate relative to each other, thereby preventing the remaining mechanisms in the transmission system from being damaged. After the torque decreases, the roller (5) stops rolling, causing the gear ring (2) and the rotating shaft (1) to lock, and the gear shaft transmits the torque normally.