Belt pulley structure capable of accommodating structural vibration

Abstract

The utility model discloses a kind of structure of pulley that can adapt to structural vibration in the technical field of pulley transmission, including shell, the shell is rotatably connected with driving pulley, the both ends of the shell are respectively provided with first output pulley and second output pulley, meshing toothed belt is on the driving pulley, the toothed belt is engaged with first output pulley and second output pulley, first output pulley and second output pulley are respectively connected with output device, damping assembly is provided on the shell, and the damping assembly is used for connecting mounting structure. The utility model is by being provided with multiple flexible connecting structure, effectively promote the stability and reliability of transmission system, wherein, diaphragm coupling can significantly reduce vibration and impact transmission, while having good centering compensation capacity, make equipment run more smoothly, prolong the service life of key components.

Description

Technical Field

[0001] This utility model relates to the field of belt drive technology, and in particular to a belt pulley structure with one input and two outputs that can adapt to structural vibration. Background Technology

[0002] A pulley is a mechanical transmission component, typically made of metal or composite materials. It connects to another pulley via a belt to form a transmission system used to transmit power and change rotational speed in rotating machinery. It is widely used in engines, electric motors, compressors, and other equipment, and features simple structure, smooth transmission, and shock absorption. In the tiltrotor transmission system of a certain aviation equipment system, the traditional pulley system has problems such as misalignment during installation and vibration transmission, which may affect transmission efficiency and equipment life. Due to machining errors, assembly deviations or structural deformation, the coaxiality of the input and output shafts is misaligned, resulting in belt wear, reduced transmission efficiency, increased noise and premature component damage. Secondly, there is the problem of vibration transmission. The vibration of the prime mover is directly transmitted through the rigid structure, superimposed with the impact of belt meshing and possible resonance effects, which aggravates the system vibration, affects the smoothness of operation and shortens the service life. Therefore, we propose a one-input and two-output pulley structure that can adapt to structural vibration. Utility Model Content

[0003] To address the shortcomings of existing technologies, this utility model provides a pulley structure with one input and two outputs that can adapt to structural vibrations. By setting a diaphragm coupling between the pulley and the input or output end, and installing the whole structure with a shock-absorbing device, the problems of pulley operating efficiency, lifespan, and noise when the structural rigidity is insufficient are solved.

[0004] The purpose of this utility model is achieved as follows: a pulley structure with one input and two outputs that can adapt to structural vibration includes a housing, a drive pulley rotatably connected inside the housing, a first output pulley and a second output pulley respectively provided at both ends of the housing, a toothed belt meshing on the drive pulley, the toothed belt meshing with the first output pulley and the second output pulley, the first output pulley and the second output pulley respectively connected to an output device, a shock-absorbing component provided on the housing for connecting and mounting structures, and an adjustment component provided on the housing for adjusting the tension of the toothed belt.

[0005] A first diaphragm coupling is provided between the drive pulley and the drive end, and a second diaphragm coupling is provided between the first output pulley and the second output pulley and the output device, respectively.

[0006] The shock absorption assembly includes a shock absorption bolt, a rubber sleeve is fixedly connected inside the housing, the shock absorption bolt passes through the rubber sleeve, a retaining ring is fitted on the shock absorption bolt, and a limit pin is inserted into the shock absorption bolt.

[0007] There are two sets of shock-absorbing components, which are symmetrically distributed, and the rubber sleeves are symmetrically distributed on the shell.

[0008] The retaining ring has multiple limiting grooves arranged in a circular pattern, and the limiting pin passes through the limiting grooves.

[0009] The adjustment assembly includes an adjustment bolt, on which a tensioning wheel is rotatably connected. The adjustment bolt drives the tensioning wheel to slide through a threaded connection with the housing.

[0010] Compared with the prior art, the beneficial effects of this utility model are as follows: 1. By setting up multiple flexible connection structures, the stability and reliability of the transmission system are effectively improved. Among them, the diaphragm coupling can significantly reduce vibration and impact transmission, while having good centering compensation capability, making the equipment run more smoothly and extending the service life of key components.

[0011] 2. By using modular damping components and adjustment components, the maintainability and adaptability of the system are optimized. The symmetrically distributed damping components and tension adjustment structure not only simplify the installation and maintenance process, but also allow for flexible adjustment according to different working conditions, ensuring that the equipment maintains its best performance under various operating conditions. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0013] Figure 1 This is a schematic diagram of the overall structure provided by this utility model.

[0014] Figure 2 This is a schematic diagram of the shell structure provided by this utility model.

[0015] Figure 3 This is a schematic diagram of the shock absorption component provided by this utility model.

[0016] Figure 4 This is a schematic diagram of the limiting pin structure provided by this utility model.

[0017] In the diagram: 1. Housing; 11. Drive pulley; 12. First output pulley; 13. Second output pulley; 14. Toothed belt; 15. First diaphragm coupling; 16. Second diaphragm coupling; 2. Vibration damping assembly; 21. Vibration damping bolt; 23. Rubber sleeve; 24. Snap ring; 25. Limit pin; 26. Limit groove; 3. Adjustment assembly; 31. Adjusting bolt; 32. Tensioner; 4. Output device. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] like Figures 1 to 4 The diagram shows a pulley structure with one input and two outputs that can adapt to structural vibration. It includes a housing 1, a drive pulley 11 rotatably connected inside the housing 1, a first output pulley 12 and a second output pulley 13 respectively provided at both ends of the housing 1, a toothed belt 14 meshing on the drive pulley 11, the toothed belt 14 meshing with the first output pulley 12 and the second output pulley 13, the first output pulley 12 and the second output pulley 13 respectively connected to the output device 4, a shock-absorbing component 2 provided on the housing 1 for connecting and mounting the structure, and an adjustment component 3 provided on the housing 1 for adjusting the tension of the toothed belt 14.

[0020] Furthermore, by adopting a one-in-two-out layout in conjunction with the shock-absorbing component 2, it can adapt to structural vibrations during equipment operation and reduce the impact of vibrations on transmission accuracy. The toothed belt 14, in combination with an adjustable tensioning mechanism, ensures stable power transmission to both output ends, while automatically compensating for belt slack caused by load changes or installation errors. Furthermore, the vibration damping component 2 is used to isolate the transmission of prime mover vibration to the support structure, reducing the risk of resonance. The symmetrical layout of the dual output pulleys optimizes power distribution efficiency, making the system run more smoothly and reliably. The overall structure improves transmission accuracy while extending the service life of belts and bearings and reducing maintenance frequency, making it suitable for equipment with complex vibration conditions. It achieves multiple advantages such as noise reduction, vibration reduction, and adaptive adjustment while ensuring efficient transmission.

[0021] Specifically, a first diaphragm coupling 15 is provided between the drive pulley 11 and the drive end, and a second diaphragm coupling 16 is provided between the first output pulley 12 and the second output pulley 13 and the output device 4, respectively.

[0022] Furthermore, by setting a diaphragm coupling, the overall performance of the transmission system can be improved. The flexible coupling can effectively absorb the radial and angular deviations between the drive end and the output device 4, avoiding stress concentration problems caused by rigid connection. In particular, the elastic characteristics of the diaphragm can buffer instantaneous impact loads, reduce vibration transmission, and protect the transmission components from damage. Meanwhile, this non-contact connection method can eliminate the wear risk of traditional couplings, extend service life, and the vibration isolation effect of the coupling further optimizes the smoothness of power transmission, making it particularly suitable for high-precision or vibration-sensitive working environments.

[0023] Specifically, the shock absorber assembly 2 includes a shock absorber bolt 21. The housing 1 has an installation hole, and a rubber sleeve 23 is fixedly connected in the installation hole. The shock absorber bolt 21 passes through the rubber sleeve 23. A retaining ring 24 is fitted on the shock absorber bolt 21. A limit pin 25 is inserted into the shock absorber bolt 21. There are two sets of shock absorber assemblies 2, which are symmetrically distributed. The rubber sleeves 23 are symmetrically distributed on the housing 1. The retaining ring 24 has a limit groove 26. There are multiple limit grooves 26, which are circumferentially distributed. The limit pin 25 passes through the limit groove 26.

[0024] Furthermore, through the synergistic effect of the rubber sleeve 23 and the limiting mechanism, efficient absorption and isolation of multi-directional vibrations are achieved. The elastic properties of the rubber material can effectively buffer radial and axial impact loads, significantly reducing the vibration energy transmitted from the shell 1 to the mounting structure.

[0025] The symmetrically distributed rubber sleeves 23 ensure overall force balance and avoid stress concentration caused by eccentric loading. The limit pins 25 and multi-groove retaining rings 24 can provide precise displacement constraints, allowing moderate elastic deformation while preventing overload displacement and ensuring installation stability. Furthermore, this modular damping structure can flexibly adjust its damping characteristics according to actual working conditions, maintaining sufficient rigid support while possessing excellent vibration damping capabilities. The components can maintain stable damping performance during long-term use, the rubber parts are not prone to aging, and the limiting mechanism has no risk of wear.

[0026] Specifically, the adjustment component 3 includes an adjustment bolt 31, on which a tensioning wheel 32 is rotatably connected. The adjustment bolt 31 drives the tensioning wheel 32 to slide through a threaded connection with the housing 1.

[0027] Furthermore, the displacement of the tension wheel 32 can be linearly controlled by rotating the adjusting bolt 31. The operation is intuitive and labor-saving, effectively avoiding the uncertainty of traditional adjustment methods. The thread self-locking characteristic ensures that the tension is stable and reliable after adjustment and will not loosen due to vibration or load changes, reducing friction loss and extending service life. The overall design is compact and reasonable, and adjustment can be completed without additional tools, greatly simplifying the maintenance process.

[0028] Working principle: During operation, the drive end is connected to the first diaphragm coupling 15 via a pin, and the first diaphragm coupling 15 is connected to the drive pulley 11 via a spline. When the drive end is working, it drives the drive pulley 11 to rotate, which in turn drives the toothed belt 14 to rotate. The toothed belt 14 simultaneously meshes with the first output pulley 12 and the second output pulley 13, thereby driving the two second diaphragm couplings 16 to rotate and thus driving the output device 4 to work. At the same time, by adjusting the tightness of the bolt 31, the tensioning wheel 32 rotates along the axis of rotation of the tensioning wheel 32, thereby adjusting the tension of the toothed belt 14, the drive pulley 11, and the first and second output pulleys 13.

[0029] The first diaphragm coupling 15 is used to adjust the installation misalignment between the input end and the pulley housing 1 and to reduce operating vibration. The second diaphragm coupling 16 is used to adjust the installation misalignment between the output end and the pulley housing 1 and to reduce operating vibration, thereby improving efficiency, lifespan, and reducing noise. The shock absorption assembly 2 consists of two sets. Each set of shock absorption bolts 21 is connected to two rubber sleeves 23 installed on the pulley housing 1 and fixed on the mounting bracket. When the drive end works or other reasons cause the pulley housing 1 to vibrate, the vibration can be offset by the two sets of rubber sleeves 23 to achieve the shock absorption effect.

[0030] The above description of the embodiments is only for the purpose of helping to understand the method and core idea of ​​this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made to this utility model without departing from the principle of this utility model, and these improvements and modifications also fall within the protection scope of the claims of this utility model.

Claims

1. A pulley structure with one input and two outputs that can adapt to structural vibration, comprising a housing (1), characterized in that: The housing (1) is rotatably connected to a drive pulley (11). The two ends of the housing (1) are respectively provided with a first output pulley (12) and a second output pulley (13). A toothed belt (14) is engaged on the drive pulley (11). The toothed belt (14) is engaged with the first output pulley (12) and the second output pulley (13). The first output pulley (12) and the second output pulley (13) are respectively connected to the output device (4). A shock-absorbing component (2) is provided on the housing (1). The shock-absorbing component (2) is used to connect the mounting structure. An adjustment component (3) is provided on the housing (1). The adjustment component (3) is used to adjust the tension of the toothed belt (14).

2. The pulley structure with one input and two outputs that can adapt to structural vibration according to claim 1, characterized in that: A first diaphragm coupling (15) is provided between the drive pulley (11) and the drive end, and a second diaphragm coupling (16) is provided between the first output pulley (12) and the second output pulley (13) and the output device (4).

3. The pulley structure with one input and two outputs that can adapt to structural vibration according to claim 1, characterized in that: The shock-absorbing assembly (2) includes a shock-absorbing bolt (21), a rubber sleeve (23) is fixedly connected inside the housing (1), the shock-absorbing bolt (21) passes through the rubber sleeve (23), a retaining ring (24) is sleeved on the shock-absorbing bolt (21), and a limit pin (25) is inserted into the shock-absorbing bolt (21).

4. The pulley structure with one input and two outputs that can adapt to structural vibration according to claim 3, characterized in that: The number of shock-absorbing components (2) is two sets, and the two sets of shock-absorbing components (2) are symmetrically distributed. The rubber sleeves (23) are symmetrically distributed on the shell (1).

5. A pulley structure with one input and two outputs that can adapt to structural vibration according to claim 3, characterized in that: The retaining ring (24) has a limiting groove (26), and there are multiple limiting grooves (26) distributed in a circle. The limiting pin (25) passes through the limiting groove (26).

6. A pulley structure with one input and two outputs that can adapt to structural vibration according to claim 1, characterized in that: The adjustment assembly (3) includes an adjustment bolt (31), on which a tension wheel (32) is rotatably connected. The adjustment bolt (31) drives the tension wheel (32) to slide by being threadedly connected to the housing (1).

Images