Anti-micro-vibration foundation for large equipment

Abstract

The utility model belongs to the technical field of anti-microvibration foundation, concretely is a kind of large-scale equipment anti-microvibration foundation, including the anti-vibration ditch being arranged in the raft foundation of building main body and the equipment foundation being arranged in anti-vibration ditch, wherein, the anti-vibration ditch is filled with vibration isolation sand and forms the buffer layer being coated in the bottom and the periphery of equipment foundation, the top of equipment foundation is provided with first cover, the top of equipment foundation and the raft foundation between building main body are provided with the second cover of striding over anti-vibration ditch, and between first cover and second cover, and the surface layer between second cover and the raft foundation of building main body are filled with sealing paste layer all.The utility model has the advantages of effectively realizing microvibration environment for large-scale equipment in the process of running, ensuring its stable operation and avoiding adverse effects on surrounding building structure and environment.

Description

Technical Field

[0001] This utility model relates to the field of anti-micro-vibration foundation technology; specifically, this utility model relates to an anti-micro-vibration foundation for large equipment. Background Technology

[0002] In modern industrial production, scientific research experiments, and the construction of vibration-sensitive facilities, the application of large-scale equipment is becoming increasingly widespread. These large pieces of equipment are often affected by vibrations of varying degrees during operation. If these vibrations are not effectively controlled, they may lead to a decrease in the equipment's own precision, a shortened service life, and even damage to connected pipes, lines, and other ancillary facilities. Simultaneously, they can negatively impact the stability of surrounding building structures and the working environment of personnel. Traditional equipment foundation designs have many shortcomings in preventing fretting vibrations and are unable to meet increasingly stringent engineering requirements. Therefore, this research focuses on developing a fretting-resistant foundation specifically for large-scale equipment. By optimizing the foundation structure and construction, it aims to achieve efficient isolation and reduction of vibrations, ensuring the normal operation of the equipment and the safety and stability of the surrounding environment. Utility Model Content

[0003] In view of this, the present invention aims to provide a reliable and efficient anti-vibration foundation for large equipment to effectively achieve a micro-vibration environment during operation, ensure its own stable operation, and avoid adverse effects on surrounding building structures and the environment, thereby solving or at least alleviating the above-mentioned problems existing in the prior art.

[0004] To achieve the aforementioned objectives, this utility model provides a large equipment anti-vibration foundation, comprising an anti-vibration trench disposed within the raft foundation of the main building and an equipment foundation disposed within the anti-vibration trench. The anti-vibration trench is filled with vibration-damping sand to form a buffer layer covering the bottom and sides of the equipment foundation. A first cover plate is disposed on the top of the equipment foundation. A second cover plate is disposed between the top of the equipment foundation and the raft foundation of the main building, spanning the anti-vibration trench. A sealant layer is filled between the first cover plate and the second cover plate, and between the second cover plate and the surface layer of the raft foundation of the main building.

[0005] In the aforementioned anti-vibration foundation for large equipment, optionally, pre-embedded angle steels are provided at the top four corners of the equipment foundation and at the top of the raft foundation of the main building corresponding to the top of the outer wall of the anti-vibration trench opening, and a rubber buffer pad is provided between the lower surface of the second cover plate and the pre-embedded angle steels.

[0006] In the aforementioned anti-micro-vibration foundation for large equipment, optionally, the depth of the equipment foundation is greater than the depth of the raft foundation.

[0007] In the aforementioned anti-micro-vibration foundation for large equipment, the rubber buffer pad may optionally have a two-layer structure distributed vertically, with the opposing surfaces of the two layers having an interlocking tooth-like structure.

[0008] In the aforementioned anti-vibration foundation for large equipment, the second cover plate may optionally include a panel portion and a frame portion fixedly disposed at the bottom of the panel portion. The frame portion extends downward into the anti-vibration trench, and the bottom end of the frame portion is located within the height range of the pre-embedded angle steel.

[0009] In the aforementioned anti-micro-vibration foundation for large equipment, the bottom of the equipment foundation may optionally be configured as an enlarged head or a stepped structure.

[0010] In the aforementioned anti-micro-vibration foundation for large equipment, optionally, the equipment foundation is covered with a rubber buffer sleeve, the surface of the equipment foundation is provided with a groove, and the inner surface of the rubber buffer sleeve is provided with an inner protrusion that matches the groove.

[0011] In the aforementioned anti-micro-vibration foundation for large equipment, optionally, multiple long screws are threaded through the panel, the bottom end of the long screws extends into the anti-vibration groove and is threaded with a screw sleeve, and the bottom end of the screw sleeve is fixedly connected to an elastic telescopic rod, the bottom end of the elastic telescopic rod is fixedly connected to a sleeve plate, telescopic plates are slidably arranged on both sides of the sleeve plate, and a storage spring is arranged between the opposite ends of the two telescopic plates.

[0012] In the aforementioned anti-vibration foundation for large equipment, optionally, a steel bracket is fixedly installed on the vertical surface of the pre-embedded angle steel at the top of the outer wall of the anti-vibration trench opening, and a rod sleeve that is slidably sleeved on the outside of the long screw is fixedly installed inside the steel bracket.

[0013] In the aforementioned anti-micro-vibration foundation for large equipment, optionally, the top ends of all elastic telescopic rods are connected to a synchronous plate, and the bottom end of the threaded sleeve is fixedly connected to the upper surface of the synchronous plate.

[0014] This utility model has at least the following beneficial effects:

[0015] (1) High-efficiency vibration isolation system: By setting up a vibration isolation trench between the equipment foundation and the raft foundation and filling it with vibration isolation sand, an effective vibration isolation barrier is constructed. The rational design of the vibration isolation trench combined with the excellent properties of the vibration isolation sand can significantly block the propagation path of vibration waves and reduce the impact of equipment vibration on the main building and the surrounding environment. This is a vibration isolation method that is rarely used in traditional foundation design and has significant effects.

[0016] (2) Depth Design Ensures Stability: The equipment foundation is designed with a depth far exceeding that of a raft foundation, effectively increasing the foundation's self-weight and burial depth, and improving its resistance to overturning and sliding. At the same time, the enlarged bottom head or stepped structure further enhances the interaction between the foundation and the subgrade soil, providing reliable and stable support for the equipment under various complex vibration conditions, and reducing the risk of equipment failure due to foundation instability.

[0017] (3) Comprehensive adaptability and reliability: The design of this large-scale equipment anti-micro-vibration foundation can adapt to large-scale equipment of different types, vibration characteristics and weights. Whether it is heavy machinery in industrial production, precision instruments and equipment or high-sensitivity devices in scientific research experiments, the various parameters of the foundation can be adjusted and optimized according to their specific requirements. It has wide adaptability and high reliability, laying a solid foundation for the safe and stable operation of large-scale equipment. Attached Figure Description

[0018] The disclosure of this utility model will become more apparent with reference to the accompanying drawings. It should be understood that these drawings are for illustrative purposes only and are not intended to limit the scope of protection of this utility model. In the drawings:

[0019] Figure 1 This is a schematic diagram of the structure of a first embodiment of the anti-micro-vibration foundation for large equipment of this utility model;

[0020] Figure 2 This utility model Figure 1 Enlarged view of point A;

[0021] Figure 3 This is a schematic diagram of the structure of Embodiment 2 of the anti-micro-vibration foundation for large equipment of this utility model;

[0022] Figure 4 This utility model Figure 3 Enlarged view of point B;

[0023] Figure 5 This utility model Figure 4 Enlarged view of point C.

[0024] Attached reference numerals: 1-Vibration damping trench; 2-Equipment foundation; 3-Buffer layer; 4-First cover plate; 5-Second cover plate; 6-Sealant layer; 7-Embedded angle steel; 8-Rubber buffer pad; 9-Rubber buffer sleeve; 10-Inner protrusion; 11-Long screw; 12-Screw sleeve; 13-Elastic telescopic rod; 14-Sleeve plate; 15-Telescopic plate; 16-Storage spring; 17-Steel bracket; 18-Rod sleeve. Detailed Implementation

[0025] The technical solutions in the embodiments of this utility model will be clearly and completely described below. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0026] like Figure 1 and Figure 2 As shown, this utility model provides a large equipment anti-vibration foundation, including an anti-vibration trench 1 set in the raft foundation of the main building and an equipment foundation 2 set in the anti-vibration trench 1. The depth of the equipment foundation 2 is greater than the depth of the raft foundation. The bottom of the equipment foundation 2 is set as an enlarged head or stepped structure. The anti-vibration trench 1 is filled with vibration-damping sand to form a buffer layer 3 covering the bottom and sides of the equipment foundation 2. The top of the equipment foundation 2 is provided with a first cover plate 4. A second cover plate 5 is set between the top of the equipment foundation 2 and the raft foundation of the main building, spanning the anti-vibration trench 1. The space between the first cover plate 4 and the second cover plate 5, and between the second cover plate 5 and the surface layer of the raft foundation of the main building, are filled with a sealant layer 6.

[0027] ① Vibration isolation trench installation:

[0028] Vibration isolation trenches are carefully planned and installed between equipment foundation 2 and the raft foundation of the main building. The width and depth of the vibration isolation trenches are determined comprehensively based on factors such as the vibration characteristics of the equipment, the distance between equipment foundation 2 and the raft foundation, and the site geological conditions. Generally, the width of the vibration isolation trenches can be set between 0.2 meters and 0.5 meters, and the depth can reach more than 4 meters to ensure that they have sufficient vibration isolation capacity.

[0029] The shape of the vibration isolation trench can be designed as a ring around the equipment foundation 2 or a suitable zigzag shape depending on the actual site conditions, in order to block the vibration propagation path to the greatest extent. A waterproof and corrosion-resistant protective layer, such as geotextile or plastic film, is laid on the inner wall of the vibration isolation trench to prevent groundwater or harmful substances in the soil from eroding the trench wall and affecting the vibration isolation effect and service life of the vibration isolation trench.

[0030] ② Vibration-damping sand filling:

[0031] The vibration isolation trench is filled with vibration isolation sand of a specific specification. The vibration isolation sand is selected from sand materials with uniform particles, hard texture, and good damping characteristics, such as quartz sand. Its particle size distribution is strictly screened, generally within the [particle size range], to ensure that the sand body can effectively dissipate vibration energy through friction and relative displacement between particles when subjected to vibration.

[0032] The filling process of the vibration-damping sand adopts a layered compaction or vibration compaction method, and the thickness of each layer is controlled to ensure that the density of the sand is uniform. After filling, the surface of the vibration-damping sand is leveled to prevent the sand from being lost or disturbed by external factors during subsequent use.

[0033] ③Equipment Foundation Area 2: Ground Treatment and Pile Foundation Engineering

[0034] The foundation treatment for Equipment Foundation 2 area adopts a different approach than that for the raft foundation of the main building. First, a detailed survey of the foundation beneath Equipment Foundation 2 is conducted, and targeted treatment is implemented based on the soil type, bearing capacity, and deformation characteristics. For example, for soft soil layers, deep mixing piles and high-pressure jet grouting piles can be used for reinforcement to improve the strength and stability of the foundation soil.

[0035] The pile foundation engineering for Equipment Foundation 2 is specifically designed based on the equipment's weight, vibration frequency, and stringent settlement requirements. The pile type can be either cast-in-place piles or precast piles, with the pile diameter, length, and spacing determined by specific engineering calculations. The piles are constructed using high-strength concrete and high-quality steel reinforcement to ensure sufficient bearing capacity and vibration resistance. During pile construction, the verticality, top elevation, and quality of the piles are strictly controlled. Advanced construction techniques and testing methods, such as ultrasonic testing and static load testing, are employed to guarantee the reliable quality of the pile foundation engineering.

[0036] ④ Equipment foundation 2 depth design:

[0037] The depth of Equipment Foundation 2 far exceeds that of the raft foundation. Its depth design primarily considers the equipment's center of gravity height, vibration characteristics, and stability requirements. Generally, Equipment Foundation 2 can be at least 3 meters deeper than the raft foundation. Increasing the foundation's depth improves its overturning resistance and stability. An enlarged head or a stepped foundation structure is installed at the bottom of Equipment Foundation 2 to further enhance the friction and bearing area between the foundation bottom and the foundation soil, effectively resisting the horizontal and vertical vibration loads generated during equipment operation.

[0038] Pre-embedded angle steel 7 is installed at the top four corners of the equipment foundation 2 and at the top of the outer wall of the anti-vibration trench 1 corresponding to the raft foundation of the main building. A rubber buffer pad 8 is installed between the lower surface of the second cover plate 5 and the pre-embedded angle steel 7. Specifically, pre-embedded parts embedded in the equipment foundation 2 or raft foundation are fixedly installed at the inside corner of the pre-embedded angle steel 7. The buffer layer 3 can further improve the buffering effect and the anti-vibration effect. Specifically, the rubber buffer pad 8 has a two-layer structure with the upper and lower layers arranged in a toothed structure with interlocking surfaces.

[0039] The second cover plate 5 includes a panel portion and a frame portion fixedly disposed at the bottom of the panel portion. The frame portion extends downward into the anti-vibration trench 1, and the bottom end of the frame portion is located within the height range of the pre-embedded angle steel 7.

[0040] like Figures 3 to 5 As shown, in Embodiment 2, the equipment base 2 is externally covered with a rubber buffer sleeve 9. The surface of the equipment base 2 has grooves, and the inner surface of the rubber buffer sleeve 9 has an inner protrusion 10 that matches the grooves. By providing the rubber buffer sleeve 9, the buffering effect and vibration damping effect can be further improved. Simultaneously, the cooperation between the inner protrusion 10 and the grooves can improve the stability of the rubber buffer pad 8 on the outside of the equipment base 2. Furthermore, in this embodiment, the bottom of the rubber buffer sleeve 9 can be configured as an enlarged head or a stepped structure.

[0041] Furthermore, multiple long screws 11 are threaded through the panel. The bottom end of the long screw 11 extends into the anti-vibration groove 1 and is threaded with a screw sleeve 12. The bottom end of the screw sleeve 12 is fixedly connected to an elastic telescopic rod 13. The bottom end of the elastic telescopic rod 13 is fixedly connected to a sleeve plate 14. Telescopic plates 15 are slidably arranged on both sides of the sleeve plate 14, and a storage spring 16 is arranged between the opposite ends of the two telescopic plates 15.

[0042] The elastic force applied to the telescopic plate 15 by the storage spring 16 allows the sleeve plate 14, in conjunction with the two telescopic plates 15, to seal the top of the vibration-damping sand. Simultaneously, the elastic telescopic rod 13 provides a downward preload to the vibration-damping sand. Furthermore, by rotating the long screw 11, the screw sleeve 12 can be adjusted to press down or release the top of the elastic telescopic rod 13, thereby controlling the preload on the vibration-damping sand, controlling its density, and ultimately optimizing the vibration isolation effect.

[0043] A steel bracket 17 is fixedly installed on the vertical surface of the pre-embedded angle steel 7 at the top of the outer wall of the anti-vibration trench 1 opening. A sleeve 18, which is slidably sleeved on the outside of the long screw 11, is fixedly installed inside the steel bracket 17. Specifically, the outer diameter of the long screw 11 at the upper and lower ends of the sleeve 18 is larger than the inner diameter of the sleeve 18, so that the sleeve 18 fixes the long screw 11 in the length direction and is fixed to the steel bracket 17 through the sleeve 18. This ensures that when the long screw 11 applies pressure to the elastic telescopic rod 13, the reaction force is applied to the steel bracket 17, preventing the panel from being subjected to a reaction force.

[0044] The technical scope of this utility model is not limited to the contents of the above description. Those skilled in the art can make various modifications and variations to the above embodiments without departing from the technical concept of this utility model, and all such modifications and variations should fall within the scope of this utility model.

Claims

1. A foundation for preventing micro-vibration in large equipment, characterized in that, It includes a vibration damping trench (1) set in the raft foundation of the main building and an equipment foundation (2) set in the vibration damping trench (1). The vibration damping trench (1) is filled with vibration isolation sand to form a buffer layer (3) covering the bottom and the sides of the equipment foundation (2). A first cover plate (4) is set on the top of the equipment foundation (2). A second cover plate (5) is set between the top of the equipment foundation (2) and the raft foundation of the main building and spans the vibration damping trench (1). A sealant layer (6) is filled between the first cover plate (4) and the second cover plate (5) and between the second cover plate (5) and the surface layer of the raft foundation of the main building.

2. The anti-micro-vibration foundation for large equipment according to claim 1, characterized in that, The top four corners of the equipment foundation (2) and the top of the raft foundation of the main building corresponding to the top of the outer wall of the anti-vibration trench (1) are all provided with embedded angle steel (7), and a rubber buffer pad (8) is provided between the lower surface of the second cover plate (5) and the embedded angle steel (7).

3. The anti-micro-vibration foundation for large equipment according to claim 2, characterized in that, The depth of the equipment foundation (2) is greater than the depth of the raft foundation.

4. The anti-micro-vibration foundation for large equipment according to claim 2, characterized in that, The rubber buffer pad (8) has a two-layer structure with the upper and lower layers distributed on each other, and the opposite surfaces of the upper and lower layers have a tooth-like structure that interlocks with each other.

5. A large equipment anti-micro-vibration foundation according to claim 2, characterized in that, The second cover plate (5) includes a panel portion and a frame portion fixedly disposed at the bottom of the panel portion. The frame portion extends downward into the anti-vibration trench (1), and the bottom end of the frame portion is located within the height range of the pre-embedded angle steel (7).

6. The anti-micro-vibration foundation for large equipment according to claim 1, characterized in that, The bottom of the equipment foundation (2) is configured as an enlarged head or a stepped structure.

7. The anti-micro-vibration foundation for large equipment according to claim 1, characterized in that, The equipment base (2) is covered with a rubber buffer sleeve (9). The surface of the equipment base (2) is provided with a groove, and the inner surface of the rubber buffer sleeve (9) is provided with an inner protrusion (10) that matches the groove.

8. A large equipment anti-micro-vibration foundation according to claim 5, characterized in that, Multiple long screws (11) are threaded through the panel. The bottom end of the long screw (11) extends into the anti-vibration groove (1) and is threaded with a screw sleeve (12). The bottom end of the screw sleeve (12) is fixedly connected to an elastic telescopic rod (13). The bottom end of the elastic telescopic rod (13) is fixedly connected to a sleeve plate (14). Telescopic plates (15) are slidably arranged on both sides of the sleeve plate (14), and a storage spring (16) is arranged between the opposite ends of the two telescopic plates (15).

9. A large equipment anti-micro-vibration foundation according to claim 8, characterized in that, A steel bracket (17) is fixedly installed on the vertical surface of the pre-embedded angle steel (7) at the top of the outer wall of the anti-vibration trench (1), and a rod sleeve (18) that is slidably sleeved on the outside of the long screw (11) is fixedly installed inside the steel bracket (17).

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