A combined spring damper

Abstract

This application relates to the field of vibration isolation equipment, and in particular to a combined spring vibration isolator, comprising a base and a top plate. The top plate is disposed above the base. A screw is rotatably mounted on the upper surface of the base, and a spring is fitted onto the screw. An adjustment component one is disposed between the screw below the spring and the base, and an adjustment component two is disposed between the screw above the spring and the top plate. This invention allows for flexible changes in the support position of the lower end of the spring by driving the lifting plate in the adjustment component one to slide along the guide plate; and by rotating the threaded cylinder in the adjustment component two, the limit position of the upper end of the spring can be independently adjusted. The combined effect of the two components breaks the limitation of a single adjustment direction, enabling precise adjustment of the pre-compression and effective working length of the spring according to actual working conditions, thereby achieving precise matching between the vibration isolation frequency of the vibration isolator and the vibration characteristics of the equipment and the installation environment.

Description

Technical Field

[0001] This application relates to the field of vibration isolation equipment technology, specifically a combined spring vibration isolator. Background Technology

[0002] In the existing technology, the basic structure of a traditional spring vibration isolator usually includes a base, a top plate, and a spring connecting the two. The core working principle is to use the compression or stretching deformation of the spring under load to convert vibration energy into elastic potential energy, thereby weakening the transmission of vibration to the foundation or equipment.

[0003] A search revealed a novel spring vibration isolation support disclosed in Chinese Patent Publication No. CN217027582U, comprising an upper base plate and a lower base plate. The lower end face of the upper base plate is provided with two rows of eight upper spring holders, and the upper end face of the lower base plate is provided with two rows of eight lower spring holders. Springs are engaged between the upper and lower spring holders. Connecting screws are fixedly connected to the left and right ends of the lower base plate. The upper end of the connecting screw extends out of the upper base plate and is threaded with a locking nut. Dustproof and waterproof devices are provided around the upper and lower base plates.

[0004] However, the spring components of existing vibration isolators have adjustment functions, but these are mostly limited to a single direction. They cannot independently and flexibly adjust the pre-compression and effective working length of the spring, making it difficult to accurately match the vibration isolation frequency with the actual working conditions, thus greatly reducing the vibration isolation effect. Therefore, a new solution is needed to solve this problem. Utility Model Content

[0005] In view of the above-mentioned background technology, the existing technology has the shortcomings and defects that springs are mostly limited to a single direction and cannot independently and flexibly adjust the pre-compression and effective working length of the spring.

[0006] The present invention discloses a combined spring vibration isolator, comprising a base and a top plate. The top plate is disposed above the base. A screw is rotatably mounted on the upper end face of the base. A spring is sleeved on the screw. An adjustment component one is disposed between the screw below the spring and the base. An adjustment component two is disposed between the screw above the spring and the top plate.

[0007] Optionally, the adjustment component includes a lifting plate connected to the screw, a guide plate on the outer ring of the lifting plate, the lower end of the guide plate being fixedly mounted on the base, and a sliding groove on the lifting plate that is slidably disposed with the guide plate.

[0008] Optionally, four guide plates are provided, which are evenly distributed around the screw axis, and the upper ends of the guide plates are fixedly connected by connecting rings.

[0009] Optionally, the second adjusting component includes a threaded cylinder and a threaded hole. The threaded hole is disposed on the top plate, the threaded cylinder is threadedly connected to the threaded hole, the threaded cylinder is slidably connected to the screw, a nut is fixedly installed on the upper end of the threaded cylinder, the lower end of the threaded cylinder is disposed inside the spring, a baffle is disposed on the upper end of the spring, and the baffle is rotatably mounted on the top plate.

[0010] Optionally, the base and the top plate are provided with a groove on the side that is close to each other, the spring and the baffle are both provided inside the groove, the lower end of the top plate is fitted onto the upper end of the base, the upper end of the top plate is provided with a hidden groove, and the nut is provided inside the hidden groove.

[0011] Optionally, the screw and the threaded cylinder have fine threads, and a hexagonal screw head is fixedly installed at the upper end of the screw.

[0012] Optionally, four screws and four threaded cylinders are provided, and the four screws and four threaded cylinders are located at the four corners of the base and the top plate.

[0013] In summary, this application includes the following beneficial technical effects:

[0014] 1. This utility model allows for flexible adjustment of the lower support position of the spring by sliding the lifting plate in the first adjustment component along the guide plate; the upper limit position of the spring can be independently adjusted by rotating the threaded cylinder in the second adjustment component; the combined effect of the two components can break the limitation of a single adjustment direction, and achieve precise adjustment of the pre-compression and effective working length of the spring according to actual working conditions, thereby enabling the vibration isolation frequency of the vibration isolator to be precisely matched with the vibration characteristics of the equipment and the installation environment.

[0015] 2. This utility model has four screws and threaded cylinders distributed at the four corners of the base and top plate, which can ensure that the spring is evenly stressed and avoid equipment tilting or component damage caused by force imbalance during vibration isolation. The hidden groove at the upper end of the top plate can store the nut, and the grooves in the base and top plate can limit the spring and baffle, which not only improves the compactness and aesthetics of the overall structure, but also effectively prevents bumps and extends the service life of the vibration isolator, and has structural stability and practical reliability. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the threaded cylinder connection of this utility model;

[0018] Figure 3 This is a cross-sectional view of the present invention;

[0019] Figure 4 This is a schematic diagram of a partial explosion of the present invention.

[0020] In the diagram: 1. Base; 2. Top plate; 3. Screw; 4. Guide plate; 5. Lifting plate; 6. Slide groove; 7. Connecting ring; 8. Spring; 9. Threaded cylinder; 10. Through hole; 11. Nut; 12. Baffle; 13. Hidden groove; 14. Hexagonal screw head; 15. Groove. Detailed Implementation

[0021] The following is in conjunction with the appendix Figures 1-4 This application will be further described in detail below. The technical solutions in the embodiments of this application will be clearly described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application are within the scope of protection of this application.

[0022] This application discloses a combined spring vibration isolator. Please refer to... Figure 1 , Figure 2 , Figure 4 As shown, the combined spring vibration isolator of this utility model includes a base 1 and a top plate 2. The top plate 2 is disposed above the base 1. A screw 3 is rotatably mounted on the upper end face of the base 1. A spring 8 is sleeved on the screw 3. An adjustment component is disposed between the screw 3 below the spring 8 and the base 1. The adjustment component includes a lifting plate 5. The lifting plate 5 is connected to the screw 3. A guide plate 4 is disposed on the outer ring of the lifting plate 5. The lower end of the guide plate 4 is fixedly mounted on the base 1.

[0023] See Figure 2 , Figure 3 As shown, the guide plate 4 is set as a triangle to ensure that the lifting plate 5 moves only in the vertical direction without any lateral offset. The lifting plate 5 is provided with a sliding groove 6, which slides with the guide plate 4. The width of the sliding groove 6 is larger than the width of the sliding surface of the guide plate 4. A polytetrafluoroethylene gasket is pasted on the inner side of the sliding groove 6 to reduce wear during long-term adjustment. There are four guide plates 4, which are evenly distributed around the axis of the screw 3.

[0024] See Figure 2 , Figure 3 , Figure 4 As shown, the upper end of the guide plate 4 is fixedly connected by the connecting ring 7. An adjustment component 2 is provided between the screw 3 above the spring 8 and the top plate 2. The adjustment component 2 includes a threaded cylinder 9 and a threaded hole 10. The threaded hole 10 is provided on the top plate 2. The threaded cylinder 9 is threadedly connected to the threaded hole 10. The threaded cylinder 9 is slidably connected to the screw 3.

[0025] In this embodiment, a hexagonal screw head 14 is fixedly installed on the upper end of the screw 3. There are four screws 3 and four threaded cylinders 9. The four screws 3 and four threaded cylinders 9 are set at the four corners of the base 1 and the top plate 2. A nut 11 is fixedly installed on the upper end of the threaded cylinder 9. A baffle 12 is set on the upper end of the spring 8. The baffle 12 is rotatably installed on the top plate 2. A nitrile rubber pad is pasted on the lower surface of the baffle 12 to buffer the rigid impact between the spring 8 and the baffle 12.

[0026] In this embodiment, the lower end of the threaded cylinder 9 is located inside the spring 8. The base 1 and the top plate 2 are located on the side close to each other, and the spring 8 and the baffle 12 are both located inside the groove 15. The lower end of the top plate 2 is fitted onto the upper end of the base 1. The upper end of the top plate 2 is provided with a hidden groove 13. The nut 11 is located inside the hidden groove 13. The hidden groove 13 protects the nut 11 from external collision damage.

[0027] The implementation principle is as follows: When in use, the base 1 is first fixed on the installation base, and then the drive screw 3 is rotated. The screw 3 drives the lifting plate 5 to slide along the guide plate 4. The lifting plate 5 drives the lower end support position of the spring 8 to move, thereby realizing the position adjustment.

[0028] Next, the screw 3 is fixed by a tool and the nut 11 is driven to rotate. The nut 11 drives the threaded cylinder 9 to rotate. At the same time, the threaded cylinder 9 drives the top plate 2 to move along the direction of the screw 3. While the top plate 2 moves, the force is applied to the upper end of the spring 8 through the baffle 12 to adjust the position of the upper end of the spring 8 and slide on the base 1 while the top plate 2 moves.

[0029] Once the equipment is installed, the vibration isolator enters a continuous working state. The core relies on the elastic deformation of spring 8 to realize the conversion of vibration energy: when the equipment itself vibrates, or when external vibration is transmitted to the equipment, spring 8 undergoes compression or stretching deformation within the pre-set pre-compression amount and effective working length range, converting the kinetic energy of the vibration into the elastic potential energy of spring 8, thereby significantly reducing the transmission of vibration to base 1 or top plate 2, and realizing the vibration isolation function.

[0030] The above description is merely an embodiment of this utility model and is not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principle of this utility model should be included within the scope of the claims of this utility model.

Claims

1. A combined spring vibration isolator comprising a base (1) and a top plate (2), characterized in that: The top plate (2) is located above the base (1). A screw (3) is rotatably mounted on the upper surface of the base (1). A spring (8) is sleeved on the screw (3). An adjustment component one is provided between the screw (3) below the spring (8) and the base (1). An adjustment component two is provided between the screw (3) above the spring (8) and the top plate (2).

2. A combined spring vibration isolator according to claim 1, characterized in that: The adjustment component includes a lifting plate (5), which is connected to the screw (3). A guide plate (4) is provided on the outer ring of the lifting plate (5). The lower end of the guide plate (4) is fixedly installed on the base (1). A sliding groove (6) is provided on the lifting plate (5), and the sliding groove (6) is slidably disposed with the guide plate (4).

3. A combined spring vibration isolator according to claim 2, characterized in that: Four guide plates (4) are provided, and the four guide plates (4) are evenly distributed around the axis of the screw (3). The upper end of the guide plates (4) is fixedly connected by a connecting ring (7).

4. The combined spring isolator of claim 1, wherein: The second adjustment component includes a threaded cylinder (9) and a threaded hole (10). The threaded hole (10) is located on the top plate (2). The threaded cylinder (9) is threadedly connected to the threaded hole (10). The threaded cylinder (9) is slidably connected to the screw (3). A nut (11) is fixedly installed on the upper end of the threaded cylinder (9). The lower end of the threaded cylinder (9) is located inside the spring (8). A baffle (12) is provided on the upper end of the spring (8). The baffle (12) is rotatably installed on the top plate (2).

5. A combined spring vibration isolator according to claim 4, characterized in that: The base (1) and the top plate (2) are provided with a groove (15) on the side close to each other. The spring (8) and the baffle (12) are both provided inside the groove (15). The lower end of the top plate (2) is fitted onto the upper end of the base (1). The upper end of the top plate (2) is provided with a hidden groove (13). The nut (11) is provided inside the hidden groove (13).

6. A combined spring vibration isolator according to claim 4, characterized in that: The screw (3) and the threaded cylinder (9) have fine thread, and a hexagonal screw head (14) is fixedly installed on the upper end of the screw (3).

7. A combined spring vibration isolator according to claim 4, characterized in that: There are four screws (3) and four threaded cylinders (9), and the four screws (3) and four threaded cylinders (9) are located at the four corners of the base (1) and the top plate (2).

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