NPR shock absorbing support

Abstract

The utility model discloses a NPR shock absorption support, including support core body, upper seat board, lower seat board, the upper seat board bottom is equipped with support core body, and the support core body bottom is equipped with lower seat board, and the both ends of upper seat board, lower seat board are connected through NPR cable anchor respectively. Solve the problem that the cable support falls a beam in the larger earthquake.

Description

Technical Field

[0001] This utility model relates to the field of engineering vibration reduction technology, specifically to an NPR vibration reduction bearing. Background Technology

[0002] Seismic cable bearings typically consist of an upper support plate, cables, and a lower support plate. The space between the upper and lower support plates is filled with a seismic-resistant structure made of rubber or PTFE. The two ends of the cables are anchored to the side ends of the upper and lower support plates, respectively, thereby connecting the upper and lower support plates through the cables.

[0003] When there is a large relative displacement between the upper and lower support plates, the cable can effectively act as a buffer and limit. Its performance in the support directly affects the seismic performance of the structure. However, the strength of ordinary steel wire rope cables is not enough to withstand large earthquake energy and is prone to breakage. In addition, in the existing technology, the side ends of the cable and the upper and lower support plates are generally locked with rope clamps, which have poor anchoring force. In the event of a large earthquake, the cable is prone to detach from the upper and lower support plates, resulting in the risk of beam collapse. Utility Model Content

[0004] To address the aforementioned technical problems, the purpose of this utility model is to provide an NPR damping bearing to solve the problem of beam collapse caused by cable-stayed bearings during large earthquakes.

[0005] To achieve the above objectives, the technical solution of this utility model is as follows:

[0006] An NPR damping bearing includes a bearing core, an upper bearing plate, and a lower bearing plate. The bearing core is located at the bottom of the upper bearing plate, and the lower bearing plate is located at the bottom of the bearing core. The two ends of the upper bearing plate and the lower bearing plate are respectively connected by NPR cable anchors.

[0007] The NPR cable anchor is connected to the cable clamp at both ends in a locking manner. The cable clamp is fixed on the upper seat plate and both sides of the lower seat plate. The cable clamp includes a base plate and a sealing plate. The two ends of the seat plate are provided with stepped grooves for installing the base plate. The base plate and the side wall of the stepped groove form a locking groove for locking with the NPR cable anchor. The top surface of the base plate is provided with a placement groove that allows the NPR cable anchor to pass through. The placement groove is connected to the locking groove. The sealing plate is used to close the locking groove and the placement groove.

[0008] The NPR cable anchor has embedded anchor heads fixed at both ends in slots. The width of the anchor head is greater than the width of the placement slot. The slots are distributed along the width direction of the upper and lower base plates, and the placement slots are distributed at intervals along the length direction of the base plate. The base plate is parallel to the width direction of the upper and lower base plates. The placement slot is a U-shaped slot with an opening at the top.

[0009] One end of the sealing plate is connected to the base plate, and the other end is connected to the side wall of the stepped groove. The sealing plate on the upper seat plate is flush with the top surface of the upper seat plate, and the sealing plate on the lower seat plate is flush with the bottom surface of the lower seat plate.

[0010] The beneficial effects of this utility model are:

[0011] (1) The upper seat plate 2 and the lower seat plate 3 of this utility model are arranged opposite to each other, and the support core 1 is installed between the upper seat plate 2 and the lower seat plate 3. The two ends of the NPR cable anchor 4 are connected to the cable clamp by form-locking. This mechanical interlocking method enhances the firmness of the connection between the NPR cable anchor 4 and the cable clamp, and it is not easy to detach under the action of seismic energy, thus avoiding the risk of beam falling.

[0012] (2) The NPR of this utility model is arc-shaped after installation. The arc-shaped installation increases the force path of the NPR cable anchor 4, disperses the impact load, reduces the stress peak of the cable anchor per unit length, and the arc-shaped design reserves a larger deformation margin. Combined with the constant resistance characteristics of the NPR material, it realizes the system seismic resistance mechanism of large deformation and high energy consumption, and thus has good seismic performance under large earthquake conditions.

[0013] (3) The size of the anchor head 6 of this utility model is larger than the size of the placement groove 12. The anchor head 6 cannot pass through the placement groove 12. When the NPR cable anchor 4 is under tension, the anchor head 6 and the slot 8 form a mechanical interlocking structure, which enhances the connection stability and avoids beam falling accidents. Attached Figure Description

[0014] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 This is a top view of the upper seat plate of this utility model.

[0017] Figure 3 This is a structural schematic diagram of the NPR cable anchor of this utility model;

[0018] Figure 4 This is a side view of the base plate of this utility model.

[0019] Figure 5 This is a schematic diagram of the structure of the upper plate of this utility model after the seal is installed;

[0020] Figure 6 This is a schematic diagram of the distribution structure of the stepped groove and assembly groove on the upper plate of this utility model.

[0021] Reference numerals: 1. Support core, 2. Upper support plate, 3. Lower support plate, 4. NPR cable anchor, 5. Base plate, 6. Anchor head, 7. Sealing plate, 8. Slot, 9. Bolt, 10. Stepped slot, 11. Assembly slot, 12. Placement slot. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings. It should be understood that these descriptions are merely exemplary and not intended to limit the scope of this utility model. Furthermore, descriptions of well-known structures and technologies are omitted in the following description to avoid unnecessarily obscuring the concept of this utility model.

[0023] like Figure 1 As shown, an NPR damping bearing is characterized by comprising a bearing core 1, an upper bearing plate 2, and a lower bearing plate 3. The upper bearing plate 2 has the bearing core 1 at its bottom, and the lower bearing plate 3 has the lower bearing plate 3 at its bottom. The two ends of the upper bearing plate 2 and the lower bearing plate 3 are respectively connected by NPR cable anchors 4.

[0024] like Figure 2 , Figure 3 , Figure 5 , Figure 6 As shown, the NPR cable anchor 4 is connected to the cable clamp at both ends in a locking manner. The cable clamp is fixed on both sides of the upper seat plate 2 and the lower seat plate 3. The cable clamp includes a base plate 5 and a sealing plate 7. The two ends of the seat plate are provided with stepped grooves 10 for installing the base plate 5. The base plate 5 and the side wall of the stepped groove 10 form a locking groove 8 for locking with the NPR cable anchor 4. The top surface of the base plate 5 is provided with a placement groove 12 that allows the NPR cable anchor 4 to pass through. The placement groove 12 communicates with the locking groove 8. The sealing plate 7 is used to close the locking groove 8 and the placement groove 12.

[0025] like Figure 2 , Figure 4 , Figure 5 As shown, the NPR cable anchor 4 has anchor heads 6 fixed in embedded slots 8 at both ends. The width of the anchor head 6 is greater than the width of the placement slot 12. The slots 8 are distributed along the width direction of the upper seat plate 2 and the lower seat plate 3. The placement slots 12 are distributed at intervals along the length direction of the base plate 5. The base plate 5 is parallel to the width direction of the upper seat plate 2 and the lower seat plate 3. The placement slot 12 is a U-shaped slot with an opening at the top.

[0026] like Figure 5 As shown, one end of the sealing plate 7 is connected to the base plate 5, and the other end is connected to the side wall of the stepped groove 10. The sealing plate 7 on the upper seat plate 2 is flush with the top surface of the upper seat plate 2, and the sealing plate 7 on the lower seat plate 3 is flush with the bottom surface of the lower seat plate 3.

[0027] In use, this utility model has stepped grooves 10 at both ends of the top surface of the upper seat plate 2 and the bottom surface of the lower seat plate 3, such as... Figure 2 As shown, the stepped groove 10 does not extend through the width of either the upper seat plate 2 or the lower seat plate 3. The upper seat plate 2 and the base plate 5, and the lower seat plate 3 and the base plate 5, are fixed by welding or integral molding. A retaining groove 8 is formed between the base plate 5 and the side wall of the stepped groove 10. The retaining groove 8 can be spaced out or be a single unit. In this embodiment, the retaining groove 8 is a single rectangular groove, such as... Figure 4 As shown, multiple placement slots 12 are distributed at intervals along the length of the base plate 5. The number of placement slots 12 corresponds to the number of NPR cable anchors 4, as shown in the figure. Figure 3 As shown, anchor heads 6 are fixed at both ends of the NPR cable anchor 4. During installation, the NPR cable anchor 4 is bent into an outwardly convex arc shape. Then, the anchor heads 6 are placed in the slots 8 of the upper seat plate 2 and the lower seat plate 3. Simultaneously, a small section of the NPR cable anchor 4 is placed in the placement groove 12. After both ends of the NPR cable anchor 4 are installed, the sealing plate 7 is finally installed. To ensure that the sealing plate 7 is flush with the top surface of the upper seat plate 2 and the bottom surface of the lower seat plate 3, an assembly groove 11 is opened on the side wall of the stepped groove 10. The depth of the assembly groove 11 is equal to the thickness of the sealing plate 7. Similarly, one end of the sealing plate 7 is connected to the bottom plate 5 by bolt 9, and the other end is connected to the inner wall of the assembly groove 11 by bolt 9, thereby sealing the anchor head 6 in the slot 8. The size of the anchor head 6 is larger than the size of the placement groove 12, so the anchor head 6 cannot pass through the placement groove 12. When the NPR cable anchor 4 is under tension, the anchor head 6 and the slot 8 form a mechanical interlocking structure, which enhances the connection stability and avoids beam falling accidents. The support core 1 is any one of the following: pot bearing, spherical bearing, friction pendulum bearing, rubber bearing, and seismic isolation bearing.

[0028] The upper support plate 2 and the lower support plate 3 are arranged opposite each other, and the support core 1 is installed between the upper support plate 2 and the lower support plate 3. The two ends of the NPR cable anchor 4 are connected to the cable clamp by a form-locking method. This mechanical interlocking method enhances the firmness of the connection between the NPR cable anchor 4 and the cable clamp, and it is not easy to detach under the action of seismic energy, thus avoiding the risk of beam falling. After installation, the NPR is arc-shaped. The arc installation increases the force path of the NPR cable anchor 4, disperses the impact load, and reduces the stress peak per unit length of the cable anchor. The arc design reserves a larger deformation margin. Combined with the constant resistance characteristics of the NPR material, it realizes the seismic resistance mechanism of the system with large deformation and high energy consumption, thus having good seismic performance even under large earthquake conditions. Traditional rubber bearings rely on damping materials to dissipate energy, while NPR bearings achieve efficient energy dissipation through a constant resistance mechanism. NPR materials are corrosion-resistant and non-magnetic, making them suitable for complex environments. When under tension, NPR materials expand laterally, enhancing the contact surface with the cable clamps and improving energy absorption efficiency. The cable anchors maintain constant resistance during deformation, preventing structural instability. Through the constant resistance and large deformation mechanism of NPR cable anchors 4, seismic energy is converted into plastic work of the anchor cables, reducing the seismic force transmitted to the superstructure. Under strong earthquakes, NPR has high strength and is not easily broken. NPR cable anchors 4 can effectively limit bearing displacement and prevent the collapse of bridges or building structures.

[0029] It should be understood that the specific embodiments described above are merely illustrative or explanatory of the principles of this utility model and do not constitute a limitation thereof. Therefore, any modifications, equivalent substitutions, improvements, etc., made without departing from the spirit and scope of this utility model should be included within its protection scope. Furthermore, the appended claims are intended to cover all variations and modifications falling within the scope and boundaries of the appended claims, or equivalent forms of such scope and boundaries.

Claims

1. An NPR damping bearing, characterized in that, It includes a support core (1), an upper support plate (2), and a lower support plate (3). The support core (1) is located at the bottom of the upper support plate (2), and the lower support plate (3) is located at the bottom of the support core (1). The two ends of the upper support plate (2) and the lower support plate (3) are connected by NPR cable anchors (4).

2. The NPR damping bearing according to claim 1, characterized in that, The NPR cable anchor (4) is connected to the cable clamp at both ends. The cable clamp is fixed on both sides of the upper and lower seat plates (3) of the upper seat plate (2). The cable clamp includes a base plate (5) and a sealing plate (7). The two ends of the seat plate are provided with stepped grooves (10) for installing the base plate (5). The base plate (5) and the side wall of the stepped groove (10) form a locking groove (8) for the NPR cable anchor (4). The top surface of the base plate (5) is provided with a placement groove (12) that allows the NPR cable anchor (4) to pass through. The placement groove (12) is connected to the locking groove (8). The sealing plate (7) is used to close the locking groove (8) and the placement groove (12).

3. The NPR damping bearing according to claim 2, characterized in that, The NPR cable anchor (4) has anchor heads (6) fixed in embedded slots (8) at both ends. The width of the anchor head (6) is greater than the width of the placement slot (12). The slots (8) are distributed along the width direction of the upper seat plate (2) and the lower seat plate (3). The placement slots (12) are distributed at intervals along the length direction of the bottom plate (5). The bottom plate (5) is parallel to the width direction of the upper seat plate (2) and the lower seat plate (3). The placement slot (12) is a U-shaped slot with an opening at the top.

4. An NPR damping bearing according to claim 2, characterized in that, One end of the sealing plate (7) is connected to the bottom plate (5), and the other end is connected to the side wall of the stepped groove (10). The sealing plate (7) on the upper seat plate (2) is flush with the top surface of the upper seat plate (2), and the sealing plate (7) on the lower seat plate (3) is flush with the bottom surface of the lower seat plate (3).

Images