A cushioning structure

Abstract

The utility model provides a kind of buffer structure, comprising: driving wheel;First mounting, first mounting frame is connected with driving wheel;Second mounting, second mounting is set on the side of driving wheel;Buffer assembly, buffer assembly is connected with first mounting and second mounting respectively, and ball joint is formed by ball head and ball hinge support connection, so that second mounting can realize the swing of multiple degrees of freedom, so as to be able to adapt to impact and vibration from different directions, not only relieve vertical impact, but also have certain buffering and regulating ability to horizontal direction inertia force, significantly reduce the risk of goods sway, slip or overturn.

Description

Technical Field

[0001] This utility model relates to the field of semiconductor transportation technology, and specifically to a buffer structure. Background Technology

[0002] With the rapid development of industries such as semiconductors, optoelectronic displays, and precision manufacturing, extremely high requirements have been placed on the automation, intelligence, and reliability of production logistics. Automated Guided Vehicles (AGVs), as a highly efficient and flexible material handling tool, have been widely used in cleanrooms, production lines, and warehousing in the aforementioned fields. Through their automatic navigation, scheduling, and execution capabilities, AGV systems have significantly reduced labor costs and improved logistics efficiency and operational accuracy.

[0003] However, in practical applications, especially in the high-end manufacturing sector, traditional AGVs exhibit significant limitations when transporting precision components, fragile materials, or high-value products. These transported items are often extremely sensitive to vibration, impact, and tilting. Furthermore, ground seams, minor bumps, speed bumps, and the AGV's own starting, stopping, turning, acceleration, and deceleration movements all generate multi-directional impacts and vibrations. These dynamic excitations are transmitted to the goods through the vehicle body, which can affect process precision at best, and cause damage to the internal microstructure of the product at worst, resulting in huge economic losses.

[0004] For example, in a previous mobile component application of our patent application number 2025202919527, the device was based on a vertical buffer design of compression springs, supplemented by linear guiding mechanisms such as sliders and guide rails to perform shock absorption of the vehicle body. However, it was found in use that this structure mainly buffers vertical impacts and lacks effective buffering capacity for the horizontal inertial forces that inevitably exist in AGV operation (such as the front and rear impacts during emergency stops and the lateral centrifugal force during turns). There is still a risk that the goods will shake, slip or even overturn.

[0005] Therefore, existing technologies need further development. Utility Model Content

[0006] The purpose of this utility model is to overcome the above-mentioned technical deficiencies and provide a buffer structure to solve the technical problem found in the related technology that, during use, this structure mainly buffers vertical impacts but lacks effective buffering capacity for the horizontal inertial forces that inevitably exist in AGV operation, and the goods still have the risk of shaking, slipping or even overturning.

[0007] To achieve the above technical objectives, the present invention adopts the following technical solution: a buffer structure is provided, comprising: a drive wheel; a first mounting member connected to the drive wheel; a second mounting member disposed on one side of the drive wheel; and a buffer assembly connected to the first mounting member and the second mounting member respectively.

[0008] Furthermore, the buffer assembly includes: a ball head connected to the second mounting member; and a ball hinge support disposed on the side of the first mounting member facing the second mounting member, wherein the ball head and the ball hinge support cooperate to form a damping ball hinge chain, which allows the second mounting member to swing about the center of the ball.

[0009] Furthermore, the buffer assembly also includes a conical composite spring, which is sleeved on the ball head and the ball hinge support, and is connected to the first mounting member and the second mounting member respectively.

[0010] Furthermore, it also includes a limiting assembly, which includes: a limiting bolt, which is threadedly engaged with the first mounting member, with the bolt head of the limiting bolt located on the side of the first mounting member away from the second mounting member; and an adjusting nut, which is threadedly engaged with the limiting bolt and located on the side of the first mounting member closer to the second mounting member; wherein, by rotating the limiting bolt, the gap distance between the end of the limiting bolt away from the bolt head and the second mounting member is adjusted to limit the maximum swing stroke of the second mounting member relative to the first mounting member.

[0011] Furthermore, the second mounting component includes: a first mounting plate extending in a preset direction and located on the side of the first mounting component away from the drive wheel; and a second mounting plate extending in a direction perpendicular to the extension direction of the first mounting plate, the second mounting plate being detachably connected to the first mounting plate, and the second mounting plate being used to connect to the cargo platform.

[0012] Furthermore, the first mounting component includes: a flange, which is connected to the drive wheel; and a connecting plate, which is disposed on one side of the flange and is used for rigid connection with the AGV body.

[0013] Furthermore, it also includes a reinforcing plate, which is connected to the first mounting plate and the second mounting plate respectively.

[0014] Furthermore, it also includes a drive component, which is connected to the side of the flange away from the drive wheel, and a receiving space is provided on the first mounting plate, in which the drive component is located.

[0015] Beneficial effects: 1. The ball head and the ball hinge support form a ball hinge connection, which allows the second mounting component to swing with multiple degrees of freedom. This enables it to adapt to impacts and vibrations from different directions, not only mitigating vertical impacts but also providing a certain buffering and adjustment capability for horizontal inertial forces, significantly reducing the risk of cargo swaying, slipping, or overturning.

[0016] 2. The conical composite spring provides nonlinear restoring force. Its low stiffness at small displacements can effectively absorb minor vibrations, while its stiffness gradually increases to provide sufficient support force during larger impacts. This structure works in conjunction with the ball joint to absorb and dissipate impact energy in multiple directions, further improving buffer stability and adaptability.

[0017] 3. The limiting component, through an adjustable gap distance, achieves mechanical limitation on the maximum swing angle of the second mounting component, avoiding damage to the conical composite spring or cargo instability due to excessive buffer stroke under extreme working conditions, thus enhancing the reliability and safety of the entire buffer structure. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the buffer structure used in this embodiment of the utility model; Figure 2 This is a partial structural schematic diagram of the buffer structure used in an embodiment of this utility model; Figure 3 This is a partial structural diagram of the buffer structure used in an embodiment of this utility model.

[0019] The above figures include the following reference numerals: 1. Drive wheel; 2. First mounting component; 3. Second mounting component; 4. Buffer assembly; 5. Ball joint; 6. Ball joint support; 7. Conical composite spring; 8. Limiting assembly; 9. Limiting bolt; 10. Adjusting nut; 11. First mounting plate; 12. Second mounting plate; 13. Flange; 14. Connecting plate; 15. Reinforcing plate; 16. Drive component. Detailed Implementation

[0020] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0021] According to an embodiment of this utility model, a buffer structure is provided; please refer to [link / reference]. Figures 1 to 3It includes: a drive wheel 1; a first mounting member 2, which is connected to the drive wheel 1; a second mounting member 3, which is disposed on one side of the drive wheel 1; and a buffer assembly 4, which is connected to the first mounting member 2 and the second mounting member 3 respectively.

[0022] By adopting the above technical solution, the buffer component 4 is connected between the first mounting component 2 and the second mounting component 3 to form an intermediate buffer structure between the drive wheel 1 and the cargo platform, which effectively isolates vibrations and impacts from the ground and prevents them from being directly transmitted to the cargo, thereby improving the stability and safety of transportation.

[0023] Please refer to Figure 2 The buffer assembly 4 includes: a ball head 5, which is connected to the second mounting member 3; and a ball hinge support 6, which is disposed on the side of the first mounting member 2 facing the second mounting member 3. The ball head 5 and the ball hinge support 6 cooperate to form a damping ball hinge chain, which allows the second mounting member 3 to swing around the center of the ball.

[0024] By adopting the above technical solution, the ball head 5 and the ball hinge support 6 form a ball hinge connection, enabling the second mounting part 3 to swing with multiple degrees of freedom, thereby adapting to impacts and vibrations from different directions. This not only alleviates vertical impacts but also has a certain buffering and adjustment capability for horizontal inertial forces, significantly reducing the risk of cargo shaking, slipping, or overturning.

[0025] Please refer to Figure 2 The buffer assembly 4 also includes a conical composite spring 7, which is sleeved on the ball head 5 and the ball hinge support 6, and is connected to the first mounting member 2 and the second mounting member 3 respectively.

[0026] By adopting the above technical solution, the conical composite spring 7 provides nonlinear restoring force. Its low stiffness at small displacements can effectively absorb minor vibrations, while its stiffness gradually increases to provide sufficient support force during larger impacts. This structure works in conjunction with the ball hinge to absorb and dissipate impact energy in multiple directions, further improving buffer stability and adaptability.

[0027] Please refer to Figure 2 It also includes a limiting component 8, which includes: a limiting bolt 9, which is threadedly engaged with the first mounting member 2, and the bolt head of the limiting bolt 9 is located on the side of the first mounting member 2 away from the second mounting member 3; and an adjusting nut 10, which is threadedly engaged with the limiting bolt 9 and is located on the side of the first mounting member 2 closer to the second mounting member 3; wherein, by rotating the limiting bolt 9, the gap distance between the end of the limiting bolt 9 away from the bolt head and the second mounting member 3 is adjusted to limit the maximum swing stroke of the second mounting member 3 relative to the first mounting member 2.

[0028] By adopting the above technical solution, the limiting component 8 achieves mechanical limiting of the maximum swing angle of the second mounting part 3 through the adjustable gap distance, avoiding damage to the conical composite spring 7 or cargo instability due to excessive buffer stroke under extreme working conditions, thereby enhancing the reliability and safety of the entire buffer structure.

[0029] Specifically, the limiting component 8 is a passive safety device that does not participate in the normal buffering process. During normal buffering, the bolt head does not contact the second mounting part 3, preventing structural damage under extreme impact.

[0030] By adopting the above technical solution, the limiting component 8, as a passive protection mechanism independent of the main buffer path, only functions when the normal buffer range is exceeded. This can ensure that the buffer performance is not affected to the greatest extent, and can effectively mechanically intercept in the event of sudden overload, preventing plastic deformation or fracture of the critical structure.

[0031] Please refer to Figure 2 The second mounting component 3 includes: a first mounting plate 11, which extends along a preset direction and is located on the side of the first mounting component 2 away from the drive wheel 1; and a second mounting plate 12, which extends perpendicularly to the extension direction of the first mounting plate 11 and is detachably connected to the first mounting plate 11. The second mounting plate 12 is used to connect to the loading platform.

[0032] By adopting the above technical solution, the second mounting component 3 uses a first mounting plate 11 and a second mounting plate 12 that are perpendicular to each other and detachably connected. This facilitates the overall installation and adjustment of the buffer structure, and improves the connection rigidity and load distribution uniformity between the buffer structure and the loading platform, which helps to maintain the stability of the cargo.

[0033] Specifically, a connecting shaft is provided at the bottom of the second mounting plate 12, and the connecting shaft is connected to the ball head 5.

[0034] By adopting the above technical solution, a reliable connection between the second mounting plate 12 and the ball head 5 is achieved through the connecting shaft, ensuring the effective transmission of torque during the swing process, while simplifying the structural assembly process and improving the rigidity and durability of the overall structure.

[0035] Please refer to Figure 3 The first mounting component 2 includes: a flange 13, which is connected to the drive wheel 1; and a connecting plate 14, which is disposed on one side of the flange 13 and is used to rigidly connect with the AGV body.

[0036] By adopting the above technical solution, the first mounting component 2 is integrated with the drive wheel 1 through the flange 13 and rigidly connected to the AGV body through the connecting plate 14, which ensures reliable power transmission and provides a stable installation base for the buffer component 4, thereby enhancing the overall structural rigidity.

[0037] Specifically, the connecting plate 14 is preferably configured as two, with the two connecting plates 14 located on both sides of the flange 13 respectively, and each connecting plate 14 is provided with a buffer assembly 4.

[0038] By adopting the above technical solution, the connecting plates 14 set on both sides and the buffer components 4 arranged symmetrically together form a balanced buffer support system, which can evenly bear the load from different directions, suppress the adverse effects of off-center load, and improve the stability and smoothness of AGV operation.

[0039] Please refer to Figure 1 It also includes a reinforcing plate 15, which is connected to the first mounting plate 11 and the second mounting plate 12 respectively.

[0040] By adopting the above technical solution, the reinforcing plate 15 improves the connection stiffness and overall structural strength between the first mounting plate 11 and the second mounting plate 12, effectively suppresses component deformation, and ensures the positioning accuracy and lifespan of the buffer component under frequent swing and impact loads.

[0041] Please refer to Figure 3 It also includes a drive component 16, which is connected to the side of the flange 13 away from the drive wheel 1. A receiving space is provided on the first mounting plate 11, and the drive component 16 is located in the receiving space.

[0042] By adopting the above technical solution, the drive component 16 is embedded in the accommodating space of the first mounting plate 11, which has a compact and reasonable layout. This helps to reduce the overall height and center of gravity of the machine, improve the driving stability of the AGV, and at the same time avoid external interference, thereby enhancing the overall integrity and protection level of the equipment.

[0043] Working principle: When the drive wheel 1 is subjected to impacts and vibrations caused by uneven ground or obstacles during operation, the force is transmitted to the buffer assembly 4 through the first mounting component 2. The ball head 5 and the ball hinge support 6 in the buffer assembly 4 form a damping ball hinge, enabling the second mounting component 3 to swing freely around the ball center, thereby adapting to impacts from the vertical or horizontal direction. At the same time, the conical composite spring 7, sleeved on the outside of the ball head 5 and the ball hinge support 6, provides a nonlinear restoring force according to the displacement. That is, it exhibits low stiffness characteristics under small vibrations to absorb minor vibrations, and its stiffness gradually increases under larger impacts to provide sufficient support force, working in conjunction with the ball hinge to achieve the absorption and dissipation of multi-directional impact energy. The limiting assembly 8, through the preset gap distance of the limiting bolt 9 and the adjusting nut 10, limits the second mounting component 3. The large swing angle is mechanically limited, and passive protection is triggered only in extreme overload. The second mounting component 3 is connected to the second mounting plate 12 and the cargo platform through the mutually perpendicular and detachable first mounting plate 11, which ensures uniform load distribution and improves connection rigidity. The first mounting component 2 is integrated with the drive wheel 1 through the flange 13 and is rigidly connected to the AGV body through the double-sided connecting plates 14, providing a stable foundation for the buffer system. The reinforcing plate 15 further strengthens the connection rigidity between the first mounting plate 11 and the second mounting plate 12. The drive component 16 is embedded in the accommodating space of the first mounting plate 11, which lowers the center of gravity of the whole machine. The whole system achieves effective isolation and attenuation of impacts in multiple working conditions and directions while maintaining structural compactness, significantly improving the stability of AGV operation and cargo safety.

[0044] The process of limiting the maximum swing angle of the second mounting component 3 is explained in detail below: In a static state, by rotating the limiting bolt 9, the initial gap between the end of its screw and the side of the second mounting part 3 facing the first mounting part 2 can be precisely adjusted. This gap value directly determines the maximum range of free swing that the second mounting part 3 can have. During the free buffering phase, when the AGV is running normally, the buffer assembly 4 works normally, and the second mounting part 3 swings with multiple degrees of freedom. As long as the swing amplitude does not reach the preset gap value, the end of the limiting bolt 9 and the second mounting part 3 always remain in a non-contact state, and the limiting assembly 8 does not intervene, thus ensuring that the buffer system can perform its vibration reduction performance without interference. When encountering extreme impacts, causing the swing amplitude of the second mounting part 3 to exceed the normal range, its extreme swing position will make mechanical hard contact with the end of the screw of the limiting bolt 9. Since the limiting bolt 9 is firmly fixed on the first mounting part 2, this contact immediately forms a rigid block, thus ultimately limiting the maximum swing angle of the second mounting part 3 to a preset safe range.

[0045] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in sequences other than those illustrated or described herein.

[0046] Optionally, specific examples in this embodiment can refer to the examples described in the above embodiments, and will not be repeated here.

[0047] The sequence numbers of the embodiments in this application are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments.

[0048] In the above embodiments of this application, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions of other embodiments.

[0049] The above description is only a preferred embodiment of this application. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this application, and these improvements and modifications should also be considered within the scope of protection of this application.

Claims

1. A buffer structure, characterized in that, include: Drive wheel (1); The first mounting component (2) is connected to the drive wheel (1); The second mounting component (3) is disposed on one side of the drive wheel (1); A buffer assembly (4) is connected to the first mounting component (2) and the second mounting component (3) respectively.

2. The buffer structure according to claim 1, characterized in that, The buffer component (4) includes: Ball head (5), which is connected to the second mounting member (3); A ball joint support (6) is provided on the side of the first mounting member (2) facing the second mounting member (3), and the ball head (5) cooperates with the ball joint support (6) to form a damped ball joint chain.

3. The buffer structure according to claim 2, characterized in that, The buffer assembly (4) further includes a conical composite spring (7), which is sleeved on the ball head (5) and the ball joint support (6), and is connected to the first mounting member (2) and the second mounting member (3) respectively.

4. The buffer structure according to claim 3, characterized in that, It also includes a limiting component (8), the limiting component (8) comprising: A limiting bolt (9) is threadedly engaged with the first mounting part (2), and the bolt head of the limiting bolt (9) is located on the side of the first mounting part (2) away from the second mounting part (3); Adjusting nut (10), which is threadedly engaged with the limiting bolt (9) and located on the side of the first mounting part (2) near the second mounting part (3); The limit bolt (9) is rotated to adjust the gap between the end of the limit bolt (9) away from the bolt head and the second mounting member (3), thereby limiting the maximum swing stroke of the second mounting member (3) relative to the first mounting member (2).

5. The buffer structure according to claim 1, characterized in that, The second mounting component (3) includes: A first mounting plate (11) extends along a preset direction and is located on the side of the first mounting member (2) away from the drive wheel (1). The second mounting plate (12) extends perpendicularly to the extension direction of the first mounting plate (11). The second mounting plate (12) is detachably connected to the first mounting plate (11). The second mounting plate (12) is used to connect to the cargo platform.

6. The buffer structure according to claim 5, characterized in that, The first mounting component (2) includes: Flange (13), which is connected to the drive wheel (1); A connecting plate (14) is disposed on one side of the flange (13) and is used for rigid connection with the AGV body.

7. The buffer structure according to claim 5, characterized in that, It also includes a reinforcing plate (15), which is connected to the first mounting plate (11) and the second mounting plate (12) respectively.

8. The buffer structure according to claim 6, characterized in that, It also includes a drive component (16), which is connected to the flange (13) on the side away from the drive wheel (1), and the first mounting plate (11) has an accommodating space, in which the drive component (16) is located.

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