Novel rubber shock insulation support with enhanced tensile property

Abstract

The utility model relates to the technical field of shock insulation, in particular to a novel rubber shock insulation support capable of enhancing tensile property, which comprises an upper connecting plate steel plate, a lower connecting plate steel plate, a rubber layer and an anti-skidding thin steel plate, the upper connecting plate steel plate and the lower connecting plate steel plate are provided with connecting grooves, the rubber layer is vulcanized and bonded with the upper connecting plate steel plate and the lower connecting plate steel plate, and the anti-skidding thin steel plate is arranged in the rubber layer. The bonding strength, stability and reliability of the upper and lower connecting steel plates and the rubber layers are improved, meanwhile, friction between the upper and lower connecting steel plates and the bonded rubber layers is increased, and slippage between the upper and lower connecting steel plates and the bonded rubber layers is avoided; the anti-skid steel plates are arranged at the upper end and the lower end of the rubber layer, so that the tensile property and the shear resistance of the rubber shock insulation support are obviously improved compared with those of a common rubber shock insulation support, and the diameter of the rubber shock insulation support is increased due to the fact that the tensile property does not meet the current standard requirement; and the problem that the rubber shock insulation support is easy to damage and needs to be replaced under the action of rare earthquakes and extremely rare earthquakes is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of seismic isolation, in particular to a novel rubber seismic isolation support with enhanced tensile performance. Background Art

[0002] Seismic isolation bearings are usually installed at the bottom of buildings to reduce damage to buildings during earthquakes.

[0003] For example, the Chinese utility model patent with application number 202020316458.5 discloses a laminated rubber seismic isolation bearing installation structure, including a connecting steel plate connected to the upper pier, an embedded steel plate connected to the lower pier, and a rubber seismic isolation bearing connected between the connecting steel plate and the embedded steel plate.

[0004] However, in actual applications, it was found that the existing seismic isolation bearings had problems with bottom fracture and top tearing after an earthquake, and the structural reliability was low. This resulted in reduced performance of the seismic isolation bearings and increased difficulty and cost of recovery, which could not meet actual use requirements. Utility Model Content

[0005] The utility model aims to provide a new type of rubber seismic isolation bearing with enhanced tensile performance, so as to solve the technical problems that the current rubber seismic isolation bearing has low tensile performance, is easily damaged in rare earthquakes and needs to be replaced, and has low reliability.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A new type of rubber seismic isolation bearing with enhanced tensile performance includes upper and lower connecting steel plates and a rubber layer connected to the upper and lower connecting steel plates. The end surfaces where the upper and lower connecting steel plates are connected to the rubber layer are provided with connecting grooves, and the rubber layer is vulcanized and bonded to the upper and lower connecting steel plates through the connecting grooves.

[0008] It is further defined that the upper and lower connecting steel plates include an upper connecting plate and a lower connecting plate, the rubber layer is located between the upper connecting plate and the lower connecting plate, and the connecting grooves are respectively opened on the end faces of the upper connecting plate and the rubber layer vulcanized and bonded and the end faces of the lower connecting plate and the rubber layer vulcanized and bonded.

[0009] It is further defined that the number of the connecting grooves is multiple, and the multiple connecting groove arrays are opened on the corresponding end faces of the upper and lower connecting steel plates.

[0010] It is further defined that the ratio of the depth of the connection groove to the thickness of the upper and lower connecting steel plates is 1:10-15.

[0011] It is further defined that the connecting groove is directly opposite to the rubber layer.

[0012] It is further defined that there are a plurality of rubber layers, the plurality of rubber layers are arranged in sequence from bottom to top, and a thin steel plate is vulcanized and bonded between two adjacent rubber layers.

[0013] It is further defined that an anti-skid layer is provided on the thin steel plate to form an anti-skid thin steel plate.

[0014] It is further defined that the number of the anti-skid thin steel plates is at least six, and the anti-skid thin steel plates are located at the bottom of the first rubber layer, the second rubber layer and the third rubber layer at the top of the new rubber seismic isolation bearing, and the anti-skid thin steel plates are also located on the top of the first rubber layer, the second rubber layer and the third rubber layer at the bottom of the new rubber seismic isolation bearing.

[0015] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0016] 1. The utility model strengthens the bonding between the upper and lower connecting steel plates and the rubber layer through connecting grooves. By opening connecting grooves on the upper and lower connecting steel plates, the upper and lower connecting steel plates and the rubber layer are vulcanized and bonded by using the connecting grooves, thereby increasing the contact area between the upper and lower connecting steel plates and the rubber layer, and at the same time improving the friction between the rubber layer and the upper and lower connecting steel plates, improving the bonding strength between the upper and lower connecting steel plates and the rubber layer, and avoiding slippage and tearing between the upper and lower connecting steel plates and the rubber layer bonded thereto; compared with ordinary rubber seismic isolation bearings, the tensile and shearing properties of the rubber seismic isolation bearings are significantly improved, the diameter of the rubber seismic isolation bearings that is increased due to the tensile strength not meeting the requirements of the current specifications is reduced, and the problem that the existing rubber seismic isolation bearings are easily damaged under the action of rare earthquakes and extremely rare earthquakes is avoided.

[0017] 2. The utility model also increases the contact area and friction between the thin steel plates and the rubber layers by arranging a number of anti-slip thin steel plates between the rubber layers of the rubber isolation bearings, and enhances the bonding force between the thin steel plates and the rubber layers to which they are bonded, thereby further improving the tensile and shearing properties of the rubber isolation bearings and the stability and reliability of the rubber isolation bearings, and reducing the probability of damage to the rubber isolation bearings under rare earthquakes. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a cross-sectional view of the overall structure of the utility model;

[0019] Figure 2 This is a schematic diagram of the structure of the anti-skid thin steel plate of the utility model;

[0020] Figure 3 The cross section of the connecting groove is a schematic diagram of the dovetail groove structure;

[0021] Figure 4 The cross section of the connecting groove is a schematic diagram of an arc structure;

[0022] Figure 5The cross section of the connecting groove is a schematic diagram of a rectangular structure;

[0023] Figure 6 Set up a schematic diagram for connecting the slot matrix;

[0024] Figure 7 A schematic diagram for setting up a circular array of connection slots;

[0025] Figure 8 A schematic diagram for setting the connection slots with equal spacing in one direction;

[0026] Fig. 9 It is a schematic diagram for setting the connection slot cross;

[0027] Fig.10 A schematic diagram for setting the connecting groove in a U-shaped pattern;

[0028] In the figure: 10 - upper and lower connecting steel plates; 11 - upper connecting plate; 12 - lower connecting plate; 20 - rubber layer; 21 - anti-skid thin steel plate; 30 - connecting groove; 40 - anti-skid layer. DETAILED DESCRIPTION

[0029] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model in conjunction with the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only part of the embodiments of the present utility model, not all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present utility model.

[0030] Example 1

[0031] refer to Figure 1 and Figure 2 The present embodiment provides a novel rubber seismic isolation bearing with enhanced tensile performance, including upper and lower connecting steel plates 10 and a rubber layer 20, wherein the rubber layer 20 can be made of rubber material.

[0032] The upper and lower connecting steel plates 10 are connected to the rubber layer 20. In order to avoid the low and unstable bonding strength between the rubber layer 20 and the upper and lower connecting steel plates 10, which may cause the connecting positions of the upper and lower connecting steel plates 10 and the rubber layer 20 to slip and tear each other during an earthquake, a connecting groove 30 is selected to be opened on the upper and lower connecting steel plates 10 so that the corresponding end surface of the rubber layer 20 cooperates with the connecting groove 30. On the one hand, this can increase the contact area between the rubber layer 20 and the upper and lower connecting steel plates 10, and on the other hand, increase the friction between the rubber layer 20 and the upper and lower connecting steel plates 10, thereby improving the connection reliability between the rubber layer 20 and the upper and lower connecting steel plates 10, thereby meeting the seismic isolation requirements during actual use.

[0033] Further description, the upper and lower connecting steel plates 10 include an upper connecting plate 11 and a lower connecting plate 12, the upper connecting plate 11 is used for the top of the rubber seismic isolation bearing, and the lower connecting plate 12 is used for the bottom of the rubber seismic isolation bearing. The rubber layer 20 is arranged between the upper connecting plate 11 and the lower connecting plate 12, and the upper and lower connecting steel plates 10 are further tightly vulcanized and bonded to the rubber layer through the connecting groove 30.

[0034] Correspondingly, the connection groove 30 is provided on the lower end surface of the upper connecting plate 11 and the upper end surface of the lower connecting plate 12, thereby improving the connection strength and stability reliability of the top and bottom of the rubber layer 20, and further improving the overall structural strength of the new rubber seismic isolation bearing with enhanced tensile performance.

[0035] Preferably, there are multiple rubber layers 20, a thin steel plate is arranged between two adjacent rubber layers 20, and multiple rubber layers 20 are stacked in sequence from bottom to top. The corresponding number of rubber layers 20 can be selected according to actual needs to meet the height requirement of the new rubber seismic isolation bearing with enhanced tensile performance.

[0036] Among them, the rubber layer 20 located at the bottom layer is connected to the lower connecting plate 12 through the connecting groove 30 on the lower connecting plate 12, and the rubber layer 20 located at the top layer is connected to the lower connecting plate 12 through the connecting groove 30 on the upper connecting plate 11, thereby improving the connection stability and reliability and providing the structural strength of the overall structure.

[0037] In order to avoid slippage caused by unstable connection between two adjacent rubber layers 20, thereby reducing the seismic isolation effect, it is preferred to arrange an anti-slip layer 40 on the surface of the thin steel plate used at the upper and lower ends of the seismic isolation rubber bearing to form an anti-slip thin steel plate 21, so as to improve the connection strength, stability and reliability between the anti-slip thin steel plate 21 arranged at the upper and lower ends of the seismic isolation rubber bearing and the corresponding rubber layer 20.

[0038] The number of thin steel plates for setting the anti-skid layer 40 is at least six. Taking six as an example, it is usually selected to set the anti-skid thin steel plates 21 at the upper end of the seismic isolation rubber bearing from top to bottom: between the first rubber layer and the second rubber layer, between the second rubber layer and the third rubber layer, and between the third rubber layer and the fourth rubber layer. At the same time, the anti-skid thin steel plates 21 are also set at the lower end of the seismic isolation rubber bearing from bottom to top: between the first rubber layer and the second rubber layer, between the second rubber layer and the third rubber layer, and between the third rubber layer and the fourth rubber layer, so as to reduce the relative slippage and easy tearing problems between the thin steel plates at the upper and lower ends of the seismic isolation rubber bearing and the rubber layer 20 to which they are vulcanized and bonded, and at the same time reduce the cost; all thin steel plates can also be selected as anti-skid thin steel plates 21.

[0039] The anti-skid layer 40 can be obtained by making burrs or bumps on the end surface of the anti-skid thin steel plate 21. Figure 2As shown, a plurality of dot-shaped concave and convex surfaces are formed on the anti-slip thin steel plate 21 by mechanical processing to form an anti-slip layer 40, thereby increasing the contact area and friction force between the rubber layer 20 and ensuring a stable and reliable connection.

[0040] The anti-skid thin steel plate 21 may also be selected as a patterned steel plate, and the anti-skid layer 40 is the pattern on the surface of the steel plate.

[0041] Working principle:

[0042] First, the bottom rubber layer 20 is vulcanized and bonded to the lower connecting plate 12 through the connecting groove 30 to improve the connection stability between the rubber layer 20 and the lower connecting plate 12; then, an anti-skid thin steel plate 21 is placed on the bottom rubber layer 20, and the anti-skid thin steel plate 21 is a thin steel plate provided with an anti-skid layer 40. Then, a second rubber layer 20 is placed on the anti-skid thin steel plate 21, and the cycle is repeated until all rubber layers 20, thin steel plates, anti-skid thin steel plates 21 and upper and lower connecting steel plates 10 are set, and finally, the upper and lower connecting steel plates 10 and the rubber layer 20 connected thereto, the rubber layer 20 and the anti-skid thin steel plate 21, and the middle thin steel plate and the rubber layer 20 connected thereto are vulcanized and extruded and bonded to ensure that the rubber layer 20 connected to the upper and lower connecting steel plates 10, the anti-skid thin steel plate 21 and the rubber layer 20, and the thin steel plate in the middle layer of the support and the rubber layer 20 connected thereto are tightly and firmly bonded.

[0043] This cycle is repeated until the top rubber layer 20 and the anti-skid thin steel plate 21 are tightly connected, and then the upper connecting plate 11 and the top anti-skid thin steel plate 21 are stably connected through the connecting groove 30, thereby improving the reliability of the overall structure.

[0044] In actual use, the upper connecting plate 11 and the lower connecting plate 12 are respectively stably and reliably connected to the ends corresponding to the rubber layer 20 to enhance the structural strength, thereby avoiding breakage or tearing of the upper and lower ends of the rubber layer 20 due to unstable connection between the upper and lower connecting steel plates 10 and the rubber layer 20 during the seismic isolation process, thereby improving the actual seismic isolation performance and meeting the actual seismic isolation needs.

[0045] Example 2

[0046] Based on the novel rubber seismic isolation bearing with enhanced tensile performance provided in Example 1, in the novel rubber seismic isolation bearing with enhanced tensile performance provided in this embodiment, there are multiple connecting grooves 30, and the connecting grooves 30 array is arranged on the end surfaces of the upper and lower connecting steel plates 10.

[0047] Specifically, refer to Figure 3 to Figure 5 The vertical cross-section of the connecting groove 30 can be selected as a dovetail groove structure, an arc structure or a rectangular structure, and the connecting grooves 30 arranged on the upper and lower connecting steel plates 10 can be arranged in an array in a combination of one, two or three of them.

[0048] refer to Figure 6 to Figure 10 The connection grooves 30 may be arranged in a dot matrix, a circular array, an arrangement of equal sizes and equal spacing in the same direction, or a horizontal and vertical cross arrangement. The connection grooves 30 may also be selected as a U-shaped structure according to needs. In addition, a zigzag structure may be selected according to needs.

[0049] When the connecting groove 30 is arranged in a dot matrix, the end face of the connecting groove 30 can be selected as a blind hole structure such as a regular polygon, a circle or an ellipse, and the ratio of the depth of the connecting groove 30 to the thickness of the upper and lower connecting steel plates 10 can be selected as 1:10 to 15, and more preferably 1:10.

[0050] More preferably, the connecting grooves 30 are arranged in an array on the entire end surface of the upper and lower connecting steel plates 10, for example Figure 7 and Figure 8 As shown, or the connection groove 30 array is selected to be arranged at the end surface portion of the upper and lower connecting steel plates 10 and the rubber layer 20 facing each other, as shown in FIG. Fig. 9 and Fig.10 As shown, the connection grooves 30 are arranged in an array just above the rubber layer 20 .

[0051] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein.

[0052] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A new type of rubber seismic isolation bearing with enhanced tensile performance, characterized in that: The invention comprises upper and lower connecting steel plates (10) and a rubber layer (20) connected to the upper and lower connecting steel plates (10). The end surfaces where the upper and lower connecting steel plates (10) are connected to the rubber layer (20) are provided with connecting grooves (30). The rubber layer (20) is vulcanized and bonded to the upper and lower connecting steel plates (10) through the connecting grooves (30).

2. The novel rubber seismic isolation bearing with enhanced tensile performance according to claim 1 is characterized in that: The upper and lower connecting steel plates (10) include an upper connecting plate (11) and a lower connecting plate (12), the rubber layer (20) is located between the upper connecting plate (11) and the lower connecting plate (12), and the connecting grooves (30) are respectively opened on the end faces where the upper connecting plate (11) and the rubber layer (20) are vulcanized and bonded, and on the end faces where the lower connecting plate (12) and the rubber layer (20) are vulcanized and bonded.

3. The novel rubber seismic isolation bearing with enhanced tensile properties according to claim 1 or 2, characterized in that: The number of the connecting grooves (30) is multiple, and the multiple connecting grooves (30) are arranged in an array on the corresponding end surfaces of the upper and lower connecting steel plates (10).

4. The novel rubber seismic isolation bearing with enhanced tensile performance according to claim 3 is characterized in that: The ratio of the depth of the connection groove (30) to the thickness of the upper and lower connection steel plates (10) is 1:10-15.

5. The novel rubber seismic isolation bearing with enhanced tensile performance according to claim 3 is characterized in that: The connecting groove (30) is directly opposite to the rubber layer (20).

6. The novel rubber seismic isolation bearing with enhanced tensile performance according to claim 3 is characterized in that: The number of the rubber layers (20) is plural, and the plural rubber layers (20) are arranged in sequence from bottom to top, and a thin steel plate is vulcanized and bonded between two adjacent rubber layers (20).

7. The novel rubber seismic isolation bearing with enhanced tensile performance according to claim 6 is characterized in that: An anti-skid layer (40) is arranged on the thin steel plate to form an anti-skid thin steel plate (21).

8. The novel rubber seismic isolation bearing with enhanced tensile performance according to claim 7 is characterized in that: The number of the anti-skid thin steel plates (21) is at least six. The anti-skid thin steel plates (21) are located at the bottom of the first rubber layer (20), the second rubber layer (20) and the third rubber layer (20) at the top of the new rubber seismic isolation bearing. The anti-skid thin steel plates (21) are also located at the top of the first rubber layer (20), the second rubber layer (20) and the third rubber layer (20) at the bottom of the new rubber seismic isolation bearing.

Images