End position limiting structure of damper

Abstract

The utility model discloses a damper end limit structure relates to damper technical field, including structure main part and mounting panel, and the outside of structure main part is provided with multiple groups of annular arrangement's guide groove, and is installed with buffer mechanism between guide groove and mounting panel, and the bottom fixedly connected of mounting panel has connecting seat, and the bottom fixedly connected of connecting seat has pressure rod, and the end of pressure rod is smooth processing, and the inside fixedly connected of structure main part has support plate, and the outside of support plate is provided with through -slot, and the upper side of through -slot is installed with extrusion mechanism, and the inside bottom fixedly connected of structure main part has elastic pad, and the top fixedly connected of elastic pad has baffle, and the inside of elastic pad is provided with cavity, and the inside fixedly connected of cavity has metal block. This structure is through the first compression spring preliminary buffer, and the pressure rod bevel drive wedge block compression second compression spring realizes two -stage buffer, and finally by elastic pad and metal block complete rigid limit, form three -stage buffer mechanism, and effectively attenuate impact energy and inhibit sustained sway.

Description

Technical Field

[0001] This utility model belongs to the field of damper technology, specifically relating to a damper end limiting structure. Background Technology

[0002] Dampers, as key components for dissipating energy and suppressing vibration, are widely used in various fields such as machinery, construction, aerospace, and vehicle engineering. Their core function is to convert kinetic energy into heat or other forms of energy dissipation through internal mechanisms when a system is subjected to impact or continuous vibration, thereby ensuring the stability and safety of the main structure. In actual working conditions, the damper piston rod often faces the risk of rigid collision with the cylinder block at the end of its stroke due to huge inertial impacts or unexpected loads. Traditional end-of-stroke protection measures, such as simple rubber pads or single spring buffers, have limited energy absorption effects. When dealing with high-intensity, high-frequency impacts, they often cannot effectively attenuate all the energy, which may lead to damage to the precision components inside the damper, loosening of the connection structure, or even loss of its vibration damping function, shortening the service life of the entire equipment.

[0003] Existing damper limiting structures generally suffer from a single buffering level and insufficient energy absorption. When subjected to extreme impacts, the single buffering mechanism is easily "broken down," allowing the impact force to be directly transmitted to the interior, causing irreversible damage. At the same time, after completing one buffering operation, traditional structures often lack effective rigid stops to suppress the continuous rebound and swaying of components. This residual vibration will continue to cause fatigue damage to the structure. Therefore, a damper end limiting structure is proposed here. Summary of the Invention

[0004] To address the aforementioned issues, this utility model discloses a damper end-limiting structure. It features a three-stage buffer to fully attenuate energy and utilizes a built-in metal block to achieve final hard limiting. This structure can quickly suppress residual swaying, reduce the risk of damage to internal components due to overload or continuous vibration, and improve overall service life and reliability.

[0005] To achieve the above objectives, the technical solution of this utility model is as follows: A damper end limiting structure includes a main body and a mounting plate. The main body has multiple sets of annularly arranged guide grooves on its exterior. A buffer mechanism is installed between the guide grooves and the mounting plate. A connecting seat is fixedly connected to the back of the mounting plate, and a pressure rod is fixedly connected to the bottom of the connecting seat. The end of the pressure rod is smoothed. A support plate is fixedly connected inside the main body. A through groove is formed in the middle of the support plate, and a pressing mechanism is installed on the upper side of the through groove. An elastic pad is fixedly connected to the bottom inner side of the main body, and a baffle is fixedly connected to the top of the elastic pad. A cavity is formed inside the elastic pad, and a metal block is fixedly connected inside the cavity.

[0006] As a further technical solution of this utility model, the buffer mechanism includes a telescopic rod, a first compression spring, and a connecting block. The telescopic rod is fixedly connected to the inner side of the guide groove, the first compression spring is disposed below the telescopic rod, the connecting block is fixedly connected to the outside of the mounting plate, and the mounting plate is fixedly connected to the top of the telescopic rod. The connecting block is slidably connected to the inner side of the guide groove.

[0007] As a further technical solution of this utility model, the pressure rod is located directly above the through groove.

[0008] As a further technical solution of this utility model, the extrusion mechanism includes a fixed cylinder, a second compression spring, and a wedge block. The fixed cylinder is fixedly connected to the upper side of the support plate, and there are two sets of fixed cylinders arranged symmetrically. One end of the second compression spring is fixedly connected to the inside of the fixed cylinder, and the other end of the second compression spring is fixedly connected to the outside of the wedge block. The wedge block is slidably connected to the outside of the fixed cylinder, and the two sets of wedge blocks abut against each other.

[0009] As a further technical solution of this utility model, the wedge block is a wedge-shaped structure with an inclined surface on the upper side of its end, and the bottom end of the pressure rod is connected to the outside of the inclined surface of the two sets of wedge blocks.

[0010] As a further technical solution of this utility model, a connecting pipe is fixedly connected to the upper side of the mounting plate, and the inner side of the connecting pipe is threaded.

[0011] As a further technical solution of this utility model, a connecting plate is fixedly connected to the outside of the main structure, and a connecting hole is opened on the outside of the connecting plate.

[0012] The beneficial effects of this utility model are as follows: 1. This utility model, through a multi-stage buffer design, can dissipate impact energy step by step. In the initial stage, the first compression spring absorbs normal vibration. When encountering a large impact, the pressure rod drives the wedge block to compress the second compression spring to achieve secondary buffering. Finally, the elastic pad and the metal block complete the rigid limit, effectively avoiding the problem that a single buffer structure is easily broken.

[0013] 2. The damper end limiting structure described in this utility model can not only fully attenuate energy through three-stage buffering under severe impact conditions, but also achieve final hard limiting with the help of built-in metal blocks. This can quickly suppress residual shaking, significantly reduce the risk of damage to internal components due to overload or continuous vibration, and improve the overall service life and reliability. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 for Figure 1 Enlarged view of A in the middle; Figure 3 for Figure 1 Enlarged view of B in the middle; Figure 4 This is a partial front sectional view of the present invention; Figure 5 for Figure 4 Enlarged view of C in the middle; Figure 6 for Figure 4 Enlarged view of D; Figure 7 for Figure 4 A magnified view of E in the middle.

[0015] List of identifiers in attached diagrams: 1. Main structure; 2. Mounting plate; 3. Guide groove; 4. Telescopic rod; 5. First compression spring; 6. Connecting block; 7. Connecting seat; 8. Pressure rod; 9. Fixing cylinder; 10. Second compression spring; 11. Wedge block; 12. Support plate; 13. Through groove; 14. Elastic pad; 15. Baffle; 16. Cavity; 17. Metal block; 18. Connecting pipe; 19. Connecting plate; 20. Connecting hole. Detailed Implementation

[0016] The present invention will be further explained below with reference to the accompanying drawings and specific embodiments. It should be understood that the following specific embodiments are only used to illustrate the present invention and are not intended to limit the scope of the present invention.

[0017] As shown in the figure, the damper end limiting structure of this utility model includes a main body 1 and a mounting plate 2. The main body 1 serves as the main load-bearing and protective shell of the entire limiting structure. Multiple sets of guide grooves 3 arranged in a ring are opened on its exterior. The guide grooves 3 provide a precise vertical movement trajectory for the connecting block 6. A buffer mechanism is installed between the guide grooves 3 and the mounting plate 2. The buffer mechanism includes a telescopic rod 4, a first compression spring 5, and a connecting block 6. The telescopic rod 4 is fixedly connected to the inner side of the guide groove 3. The first compression spring 5 is located below the telescopic rod 4. The first compression spring 5 serves as a primary buffer element, absorbing conventional vibration energy through elastic deformation. The connecting block 6 is fixedly connected to the outside of the mounting plate 2, and the mounting plate 2 is fixedly connected to the top of the telescopic rod 4. The connecting block 6 is slidably connected to the inner side of the guide groove 3. The connecting block 6 transmits the impact load on the mounting plate 2 to the buffer mechanism.

[0018] like Figure 4 as well as Figure 7As shown, a connecting seat 7 is fixedly connected to the back of the mounting plate 2. The connecting seat 7 serves as a force-bearing conversion component. A pressure rod 8 is fixedly connected to the bottom of the connecting seat 7. The pressure rod 8 serves as a force transmission component, guiding the impact force to the lower buffer assembly. The end of the pressure rod 8 is smoothed to reduce frictional resistance during movement. A support plate 12 is fixedly connected inside the main body 1. The support plate 12 serves as a central support platform, providing an installation base for the extrusion mechanism. A through groove 13 is provided in the middle of the support plate 12, providing a through channel for the pressure rod 8. The pressure rod 8 is located directly above the through groove 13.

[0019] like Figure 4 as well as Figure 7 As shown, a pressing mechanism is installed on the upper side of the through groove 13. The pressing mechanism includes a fixed cylinder 9, a second compression spring 10, and a wedge block 11. The fixed cylinder 9 is fixedly connected to the upper side of the support plate 12, and there are two sets of fixed cylinders 9 arranged symmetrically. The fixed cylinder 9 serves as a guide shell to constrain the movement direction of the wedge block 11. One end of the second compression spring 10 is fixedly connected to the inside of the fixed cylinder 9. The second compression spring 10 serves as a secondary buffer element to provide progressive resistance. The other end of the second compression spring 10 is fixedly connected to the outside of the wedge block 11, and the wedge block 11 is slidably connected to the outside of the fixed cylinder 9. The two sets of wedge blocks 11 abut against each other. The wedge block 11 is a wedge-shaped structure with an inclined surface on the upper side of its end. The bottom of the end of the pressure rod 8 is connected to the outside of the inclined surface of the two sets of wedge blocks 11. The inclined surface design of the wedge block 11 can convert the vertical downward movement of the pressure rod 8 into a horizontal contraction movement.

[0020] like Figure 4 as well as Figure 7 As shown, an elastic pad 14 is fixedly connected to the bottom inner side of the main body 1. The elastic pad 14 acts as a three-stage buffer element, absorbing the remaining impact energy through material deformation. A baffle 15 is fixedly connected to the top of the elastic pad 14. The baffle 15 acts as an impact contact surface, distributing the load evenly to the elastic pad 14. A cavity 16 is opened inside the elastic pad 14. A metal block 17 is fixedly connected inside the cavity 16. The metal block 17 acts as a final limiting component, providing rigid support to prevent overload.

[0021] like Figure 1 as well as Figure 2 As shown, a connecting pipe 18 is fixedly connected to the upper side of the mounting plate 2, and the inner side of the connecting pipe 18 is threaded. The connecting pipe 18 serves as a standard interface for connecting the damper piston rod. A connecting plate 19 is fixedly connected to the outside of the main body 1. The connecting plate 19 serves as a mounting and fixing component. A connecting hole 20 is opened on the outside of the connecting plate 19. The connecting hole 20 is used to fix the entire limiting structure to the equipment base by bolts.

[0022] The working principle of this utility model is as follows: Under normal working conditions, when the mounting plate 2 is impacted or vibrates and moves downward, the first compression spring 5 in the buffer mechanism is compressed by the connecting block 6, and its elastic deformation is used for initial buffering and energy absorption. This is the first layer of buffering. If the impact energy is large, causing the displacement of the mounting plate 2 to continue to increase, the pressure rod 8 fixed at its bottom will move downward accordingly and first contact the two sets of symmetrically arranged wedge blocks 11 in the compression mechanism. The end of the pressure rod 8 uses its smooth surface to apply downward pressure along the inclined surface on the upper side of the wedge block 11, forcing the two wedge blocks 11 to overcome the elastic force of the second compression spring 10 and retract into their respective fixed cylinders 9. This process achieves more efficient buffering by compressing the second compression spring 10. The rigid secondary buffer and limit function allows the pressure rod 8 to overcome the preload of the second compression spring 10 when faced with severe impact. It passes completely through the through slot 13 on the support plate 12 and the space formed by the separation between the two sets of wedge blocks 11. Its end finally impacts the baffle 15, and the elastic pad 14 below the baffle 15 is compressed and deformed, providing a third layer of flexible buffer, thereby greatly attenuating the remaining impact energy. Finally, the stroke of the pressure rod 8 is limited by the metal block 17 in the cavity 16 inside the elastic pad 14, achieving absolute mechanical hard limit, effectively preventing damage to internal components due to excessive compression, and quickly suppressing the continuous shaking of the system through this rigid support, ensuring the safety and stability of the entire damping system under extreme conditions.

[0023] It should be noted that the above content merely illustrates the technical concept of this utility model and cannot be used to limit the scope of protection of this utility model. For those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and all such improvements and modifications fall within the scope of protection of the claims of this utility model.

Claims

1. A damper end limiting structure, characterized in that, The structure includes a main body (1) and a mounting plate (2). The main body (1) has multiple sets of guide grooves (3) arranged in a ring on its exterior. A buffer mechanism is installed between the guide grooves (3) and the mounting plate (2). A connecting seat (7) is fixedly connected to the back of the mounting plate (2). A pressure rod (8) is fixedly connected to the bottom of the connecting seat (7). The end of the pressure rod (8) is smoothed. A support plate (12) is fixedly connected inside the main body (1). A through groove (13) is opened in the middle of the support plate (12). A pressing mechanism is installed on the upper side of the through groove (13). An elastic pad (14) is fixedly connected to the bottom of the inner side of the main body (1). A baffle (15) is fixedly connected to the top of the elastic pad (14). A cavity (16) is opened inside the elastic pad (14). A metal block (17) is fixedly connected inside the cavity (16).

2. The damper end limiting structure according to claim 1, characterized in that, The buffer mechanism includes a telescopic rod (4), a first compression spring (5), and a connecting block (6). The telescopic rod (4) is fixedly connected to the inner side of the guide groove (3). The first compression spring (5) is located below the telescopic rod (4). The connecting block (6) is fixedly connected to the outside of the mounting plate (2), and the mounting plate (2) is fixedly connected to the top of the telescopic rod (4). The connecting block (6) is slidably connected to the inner side of the guide groove (3).

3. The damper end limiting structure according to claim 1, characterized in that, The pressure bar (8) is located directly above the through groove (13).

4. The damper end limiting structure according to claim 1, characterized in that, The extrusion mechanism includes a fixed cylinder (9), a second compression spring (10), and a wedge block (11). The fixed cylinder (9) is fixedly connected to the upper side of the support plate (12), and there are two sets of fixed cylinders (9) arranged symmetrically. One end of the second compression spring (10) is fixedly connected to the inside of the fixed cylinder (9), and the other end of the second compression spring (10) is fixedly connected to the outside of the wedge block (11). The wedge block (11) is slidably connected to the outside of the fixed cylinder (9), and the two sets of wedge blocks (11) abut against each other.

5. The damper end limiting structure according to claim 4, characterized in that, The wedge block (11) is a wedge-shaped structure with an inclined surface on the upper side of its end, and the bottom end of the pressure rod (8) is connected to the outside of the inclined surface of the two sets of wedge blocks (11).

6. The damper end limiting structure according to claim 1, characterized in that, The upper side of the mounting plate (2) is fixedly connected to a connecting pipe (18), and the inner side of the connecting pipe (18) is threaded.

7. The damper end limiting structure according to claim 1, characterized in that, The main body (1) is fixedly connected to a connecting plate (19), and the connecting plate (19) has a connecting hole (20) on its exterior.

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