Oblique cone locking structure
The tapered locking structure, through the tapered design of the tapered sleeve and flange, solves the problems of low connection accuracy and high maintenance cost of couplings, achieves a more stable transmission system, reduces noise and vibration, extends equipment life and improves safety.
Patent Information
- Application Number
- CN202520165388.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-23
- Publication Date
- 2025-11-18
- Estimated Expiration
- 2035-01-23
AI Technical Summary
Existing coupling connection methods suffer from low connection accuracy, high maintenance costs, noise and vibration problems, and are easily affected by model selection and installation operations, which can impact equipment stability and lifespan.
It adopts a tapered locking structure, and through the tapered structure design of the tapered sleeve and flange, it achieves a tight fit between the connecting shaft and the servo motor. It uses friction connection to replace rigid connection, absorbs the impact and vibration caused by start-up and load changes, and prevents equipment damage through overload protection mechanism.
It improves connection accuracy and transmission system stability, reduces noise and vibration, lowers maintenance costs and downtime, extends equipment lifespan, and enhances system safety.
Smart Images
Figure CN223563320U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a locking mechanism, and more particularly to a conical locking structure. Background Technology
[0002] Currently, the connections between drive motors and connecting shafts, connecting shafts and connecting shafts, and drive motors and lead screws are mainly achieved through couplings. Couplings connect the two together to achieve common transmission. A coupling generally consists of two parts that connect to the driving shaft and the driven shaft.
[0003] In practical applications, this connection method has several problems. First, from the perspective of connection accuracy, the connection accuracy of the coupling is neither as good as that of a direct connection nor as good as that of a connection achieved through a flange, which will affect the stability and transmission effect of the transmission system.
[0004] Secondly, in terms of maintenance costs, in order to ensure the normal operation of the coupling and extend its service life, it is necessary to lubricate and clean it regularly, which undoubtedly increases the workload and cost of equipment maintenance.
[0005] Finally, in the selection and installation of couplings, if the model is not selected properly or the installation operation is not standardized, the equipment may experience increased noise and vibration during operation, which will affect the overall performance and service life of the equipment.
[0006] To address the above problems, this utility model proposes a solution using a tapered locking structure. Utility Model Content
[0007] The purpose of this invention is to provide a tapered locking structure to solve the problems mentioned in the background art.
[0008] The above-mentioned technical objective of this utility model is achieved through the following technical solution:
[0009] The inclined cone locking structure includes a servo motor and a connecting shaft. A connecting sleeve is fixed on the output shaft of the servo motor. A mounting hole is opened at the end of the connecting sleeve away from the servo motor. A tapered sleeve is slidably disposed on the connecting shaft. A through opening is opened on the tapered sleeve. A flange sleeve is also slidably disposed on the connecting shaft. The tapered sleeve is disposed in the flange sleeve. One end of the flange sleeve pushes the tapered sleeve into the mounting hole. The flange sleeve and the connecting sleeve are fixed together by bolts. One end of the connecting shaft is installed in the mounting hole through the tapered sleeve.
[0010] Preferably, the flange sleeve includes a flange and a mating sleeve, the mating sleeve being fixed to the side wall of the flange and disposed inside the mounting hole, and the flange and the connecting sleeve being fixed together by bolts.
[0011] Preferably, the inner hole of the flange mates with the connecting shaft, and the inner hole of the mating sleeve has a tapered structure.
[0012] Preferably, the tapered sleeve has two ends, a large end and a small end, which are adapted to the inner hole of the mating sleeve. The diameter of the large end of the tapered sleeve is larger than the diameter of the large end of the inner hole of the mating sleeve, and the diameter of the small end of the tapered sleeve is smaller than the diameter of the connecting shaft.
[0013] Preferably, the connecting shaft and the tapered sleeve are interference fit.
[0014] Beneficial Effects: The tapered structure design of the tapered sleeve and flange allows for a tighter fit, improving connection precision. This design reduces concentricity and coaxiality deviations caused by coupling connections, ensuring the stability and reliability of the transmission system. Improved connection precision and optimized structure effectively reduce noise and vibration during equipment operation. The original rigid connection between the motor and the connecting shaft is replaced with a friction connection. The friction connection has a certain degree of elasticity, absorbing and mitigating shocks and vibrations caused by starting, stopping, or load changes during transmission. This helps protect transmission components such as the motor and connecting shaft, extending their service life. When the transmission system is overloaded, the friction connection can slip to limit the transmitted torque, thus providing overload protection. This prevents damage to the motor and connecting shaft due to overload, improving system safety. The friction connection components are designed to be relatively simple, facilitating maintenance and replacement. When friction connection components wear or are damaged, they can be quickly replaced, reducing equipment downtime and maintenance costs. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of the structure of an embodiment;
[0016] Figure 2 This is an example illustrating the exploded structure of each component;
[0017] Figure 3 This is a schematic diagram illustrating the assembly structure of the connecting shaft, flange, and tapered sleeve in an embodiment.
[0018] Figure 4 Examples are provided for demonstration purposes. Figure 3 A magnified structural diagram of A in the middle;
[0019] Figure 5 This is a cross-sectional structural diagram used to illustrate the connecting sleeve, flange, and tapered sleeve in the example.
[0020] Figure 6 Examples are provided for demonstration purposes. Figure 5 A magnified structural diagram of B in the diagram;
[0021] Figure 7 This is a top view schematic diagram used to illustrate the structure of the conical sleeve in an embodiment.
[0022] Reference numerals in the attached drawings: 1. Servo motor; 2. Connecting shaft; 3. Connecting sleeve; 4. Mounting hole; 5. Tapered sleeve; 6. Through opening; 7. Flange sleeve; 71. Flange; 72. Mating sleeve. Detailed Implementation
[0023] See Figures 1 to 2 As shown, the tapered locking structure includes a servo motor 1 and a connecting shaft 2. A connecting sleeve 3 is fixed on the output shaft of the servo motor 1, and the servo motor 1 and the connecting sleeve 3 are concentrically fixed. A mounting hole 4 is provided at the end of the connecting sleeve 3 furthest from the servo motor 1. A tapered sleeve 5 is slidably mounted on the connecting shaft 2, and a flange sleeve 7 is also slidably mounted on the connecting shaft 2. The tapered sleeve 5 is located inside the flange sleeve 7, and one end of the flange sleeve 7 pushes the tapered sleeve 5 into the mounting hole 4. Specifically, the specific taper design of the tapered sleeve 5 improves the connection accuracy between the connecting shaft 2 and the connecting sleeve 3 by 20%, reducing equipment vibration and noise caused by insufficient connection accuracy. Furthermore, the design allowing the tapered sleeve 5 to slide on the connecting shaft 2 and the flange sleeve 7 to push the tapered sleeve 5 into the mounting hole 4 facilitates assembly and disassembly, reducing maintenance costs and time compared to traditional connection methods.
[0024] See Figures 3 to 7 As shown, when it is necessary to install the connecting shaft 2 onto the connecting sleeve 3 to connect with the servo motor 1, the flange sleeve 7 can be first fitted onto the connecting shaft 2. The flange sleeve 7 can slide on the connecting shaft 2. After the flange sleeve 7 is slidably set on the connecting shaft 2, the tapered sleeve 5 can be slidably set on the connecting shaft 2. The tapered sleeve 5 has two ends, a large end and a small end. The diameter of the small end of the tapered sleeve 5 is smaller than the diameter of the connecting shaft 2. During the installation process, the small end of the tapered sleeve 5 is first brought into contact with the connecting shaft 2. The tapered sleeve 5 has a through opening 6. The tapered sleeve 5 can deform through the through opening 6 on its surface, so that the tapered sleeve 5 can be snapped onto the connecting shaft 2 through its small end diameter. Pushing the tapered sleeve 5 allows it to be completely installed on the connecting shaft 2. This design of first fitting the flange sleeve and then installing the tapered sleeve, and utilizing the deformation snapping design of the tapered sleeve, makes the entire installation process simple and easy. Compared with the traditional connection method, it greatly improves the installation efficiency and saves assembly time. Meanwhile, the snap-fit design of the tapered sleeve can initially fix the connecting shaft and the tapered sleeve, ensuring stability during subsequent installation.
[0025] After the tapered sleeve 5 is installed, the end of the connecting shaft 2 that is fitted with the tapered sleeve 5 can be pushed into the mounting hole 4 of the connecting sleeve 3. One end of the connecting shaft 2 is installed in the mounting hole 4 through the tapered sleeve 5. At this time, the flange sleeve 7 can be pushed to fix the flange sleeve 7 and the connecting sleeve 3 with bolts.
[0026] The flange sleeve 7 includes a flange 71 and a mating sleeve 72. The mating sleeve 72 is fixed to the side wall of the flange 71 and is located inside the mounting hole 4. The inner hole of the flange 71 mates with the connecting shaft 2. During the assembly process of the flange sleeve 7 and the connecting shaft 2, the flange sleeve 7 is connected to the connecting shaft 2 through the flange 71. The tapered sleeve 5 is adapted to the inner hole of the mating sleeve 72. The large end diameter of the tapered sleeve 5 is larger than the large end diameter of the inner hole of the mating sleeve 72. When the tapered sleeve 5 and one end of the connecting shaft 2 enter the mounting hole 4, the flange sleeve 7 can be pushed. The flange sleeve 7 achieves linear movement on the connecting shaft 2 through the flange 71. The continuous movement of the flange sleeve 7 causes the tapered sleeve 5 to enter the mating sleeve 72. The inner hole has a conical structure that mates with the tapered sleeve 5. The movement of the tapered sleeve 5 within the mating sleeve 72 causes the mating sleeve 72 to come into contact with the tapered sleeve 5. When the flange 71 moves to contact the side wall of the connecting sleeve 3, the flange 71 and the connecting sleeve 3 can be fixed by bolts. When the flange 71 and the connecting sleeve 3 are fixed, the mating sleeve 72 will squeeze the tapered sleeve 5. The tapered sleeve 5 will deform through its through opening 6 until the outer wall of the tapered sleeve 5 can completely contact the inner wall of the mating sleeve 72. During the process of the mating sleeve 72 squeezing the tapered sleeve 5, the tapered sleeve 5 will squeeze the connecting shaft 2 in the opposite direction, thereby achieving an interference fit between the tapered sleeve 5 and the connecting shaft 2, and finally achieving a locking between the mating sleeve 72, the tapered sleeve 5 and the connecting shaft 2.
[0027] When the servo motor 1 is started, the output shaft of the servo motor 1 will first drive the connecting sleeve 3 to rotate. The connecting sleeve 3 will drive the flange 71, which is bolted to it, to rotate. The flange 71 can drive the tapered sleeve 5 to rotate through friction. The tapered sleeve 5 can drive the connecting shaft 2 to rotate through friction. This design can reduce the concentricity and coaxiality deviation caused by the coupling connection, and ensure the stability and reliability of the transmission system.
Claims
1. A tapered locking structure, comprising a servo motor (1) and a connecting shaft (2), characterized in that, A connecting sleeve (3) is fixed on the output shaft of the servo motor (1). The end of the connecting sleeve (3) away from the servo motor (1) has an installation hole (4). A tapered sleeve (5) is slidably disposed on the connecting shaft (2). A through opening (6) is provided on the tapered sleeve (5). A flange sleeve (7) is also slidably disposed on the connecting shaft (2). The tapered sleeve (5) is disposed in the flange sleeve (7). One end of the flange sleeve (7) pushes the tapered sleeve (5) to be disposed in the installation hole (4). The flange sleeve (7) and the connecting sleeve (3) are fixed together by bolts. One end of the connecting shaft (2) is installed in the installation hole (4) through the tapered sleeve (5).
2. The inclined cone locking structure according to claim 1, characterized in that, The flange sleeve (7) includes a flange (71) and a mating sleeve (72). The mating sleeve (72) is fixed on the side wall of the flange (71) and is disposed inside the mounting hole (4). The flange (71) and the connecting sleeve (3) are fixed together by bolts.
3. The inclined cone locking structure according to claim 2, characterized in that, The inner hole of the flange (71) mates with the connecting shaft (2), and the inner hole of the mating sleeve (72) has a conical structure.
4. The inclined cone locking structure according to claim 3, characterized in that, The tapered sleeve (5) has two ends, a large end and a small end. The tapered sleeve (5) is adapted to the inner hole of the mating sleeve (72). The diameter of the large end of the tapered sleeve (5) is larger than the diameter of the large end of the inner hole of the mating sleeve (72), and the diameter of the small end of the tapered sleeve (5) is smaller than the diameter of the connecting shaft (2).
5. The inclined cone locking structure according to claim 1, characterized in that, The connecting shaft (2) and the tapered sleeve (5) are interference fit.