Cushion structure

Abstract

The utility model relates to a cushion structure, which belongs to the field of immersed tunnels and comprises a first mounting plate, a second mounting plate, an elastic layer and a pre-tightening component. Wherein the second mounting plate and the first mounting plate are arranged in parallel at an interval; the elastic layer is arranged between the first mounting plate and the second mounting plate, and the elastic layer abuts against the first mounting plate and the second mounting plate. The elastic layer comprises at least one rubber body; the pre-tightening assembly is used for fixing the distance between the first mounting plate and the second mounting plate so as to press the elastic layer. The elastic layer is pre-tightened through the pre-tightening assembly, the layer cushion structure is placed between the two corresponding shear keys, the pre-tightening assembly is operated to release fixation between the first mounting plate and the second mounting plate, the first mounting plate and the second mounting plate abut against the two shear keys respectively under the elastic force of the elastic layer, and mounting of the cushion layer structure is achieved. Elastic supporting is achieved through the elastic layer. And the elastic layer is a rubber body, so that the cost is lower, the elastic force is higher, and the deviation is avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of immersed tube tunnels, and in particular relates to a cushion structure. Background Art

[0002] An immersed tube tunnel is an underwater tunnel. Its construction method is to sink multiple prefabricated immersed tubes into the water, connect them together, and finally form an underwater passage. A shear key is set between the two immersed tubes that are connected to each other. The shear key is used to transmit shear force and torque. Its function is to offset or reduce the uneven settlement between different immersed tubes caused by different foundations or earthquakes within the design allowable strength, enhance the overall stiffness and stability of the tunnel structure, and ensure that the watertight connection between the immersed tubes is safe and reliable.

[0003] In the prior art, a cushion layer is provided between the staggered vertical shear keys in the joint cavity of two butted immersed tubes. The cushion layer can withstand and disperse the vertical shear force between the two immersed tubes. At the same time, it can also provide a certain elasticity to reduce tunnel settlement and uneven settlement during construction, and can resist earthquakes.

[0004] However, the cushion layers in the prior art all provide elastic support through springs, which are prone to deflection during installation, making the installation process difficult and costly. To solve the above problems, the present application provides a cushion layer structure. Utility Model Content

[0005] In view of the shortcomings existing in the related art, the utility model provides a cushion structure, wherein the elastic layer is pre-tightened by a pre-tightening assembly, the cushion structure is placed between two corresponding shear keys, the pre-tightening assembly is operated to release the fixation between the first mounting plate and the second mounting plate, and the first mounting plate and the second mounting plate respectively abut against the two shear keys under the elastic force of the elastic layer, so as to realize the installation of the cushion structure and realize elastic support through the elastic layer. In addition, the elastic layer is a rubber body, which has a low cost, a high elastic force and will not deviate, so as to solve the technical problems of difficult installation process and high cost existing in the prior art.

[0006] The utility model provides a cushion structure, which is used to be arranged between two adjacent shear keys, and the cushion structure comprises:

[0007] a first mounting plate;

[0008] A second mounting plate, the second mounting plate and the first mounting plate are arranged parallel and spaced apart;

[0009] An elastic layer, wherein the elastic layer is disposed between the first mounting plate and the second mounting plate, and the elastic layer abuts against the first mounting plate and the second mounting plate respectively;

[0010] The elastic layer includes at least one rubber body;

[0011] A pre-tightening assembly is used to fix the distance between the first mounting plate and the second mounting plate to compress the elastic layer.

[0012] In the technical solution, the elastic layer is pre-tightened by a pre-tightening assembly, the cushion structure is placed between two corresponding shear keys, the pre-tightening assembly is operated to release the fixation between the first mounting plate and the second mounting plate, and the first mounting plate and the second mounting plate respectively abut against the two shear keys under the elastic force of the elastic layer, so as to realize the installation of the cushion structure and realize elastic support through the elastic layer. In addition, the elastic layer is a rubber body, which has a low cost, a high elastic force and will not deviate.

[0013] In some embodiments, a gasket is attached to a side of the first mounting plate away from the elastic layer.

[0014] In the technical solution, after the pre-tightened first mounting plate, the second mounting plate and the elastic layer are inserted between the two corresponding shear keys, if the gap between the first mounting plate or the second mounting plate and the corresponding shear key is too large, a gasket can be inserted into the gap to reduce the distance of the gap. It is ensured that when the pre-tightening component is removed to release the stress, the rebound of the elastic layer can enable the first mounting plate and the second mounting plate to effectively support the corresponding shear key.

[0015] In some embodiments, the gaskets are stacked in plurality.

[0016] In the technical solution, when the gap is too large, multiple gaskets can be inserted to reduce the distance of the gap to ensure that when the preload assembly is removed to release stress, the rebound of the elastic layer can enable the first mounting plate and the second mounting plate to effectively support the corresponding shear keys.

[0017] In some embodiments, the pre-tightening assembly includes a pre-tightening bolt and a connecting nut; the pre-tightening bolt simultaneously penetrates and slides on the first mounting plate and the second mounting plate, and the connecting nut is threadedly connected to the pre-tightening bolt to clamp the first mounting plate and the second mounting plate.

[0018] In the technical solution, when the pre-tightening bolt and the connecting nut are rotated relative to each other, the first mounting plate and the second mounting plate are close to each other. This is because in the threaded connection, the friction between the pre-tightening bolt and the connecting nut plays a role in dispersing and reducing the force.

[0019] Specifically, when the pre-tightening bolt and the connecting nut are tightly matched, the friction between them can effectively transmit force and disperse the force on the pre-tightening bolt, thereby reducing the force on a single part. In contrast, direct compression of the elastic layer requires overcoming the reaction force of the elastic layer, so a greater force is required.

[0020] In addition, the connection method of the pre-tightening bolt and the connecting nut can also control the compression of the elastic layer by adjusting the length of the pre-tightening bolt and the degree of tightening, thereby achieving more precise force control and position adjustment.

[0021] In some embodiments, the pre-tightening assembly includes a pre-tightening bolt, and the first mounting plate and the second mounting plate are respectively provided with a through hole and a threaded hole, and the pre-tightening bolt passes through the through hole and is threadedly connected to the corresponding threaded hole.

[0022] In the technical solution, the pre-tightening bolt is directly passed through the through hole and threadedly connected to the threaded hole, and a connecting nut is no longer required, which saves costs and is easy to install. In addition, there is no connecting nut on one side of the cushion structure, which can be completely flush to reduce the possibility of interference with the corresponding shear key.

[0023] In some embodiments, the pre-tightening bolt is perpendicular to the first mounting plate.

[0024] In the technical solution, through this design, when the stress of the elastic layer is transferred to the pre-tightening bolt after pre-tightening, it will be transferred along the axial direction of the pre-tightening bolt, avoiding stress concentration at a certain point of the pre-tightening bolt, causing the pre-tightening bolt to break or slip, and improving the strength of the connection.

[0025] In some embodiments, the pre-tightening components are provided in plurality, and at least two of the pre-tightening components are respectively located on both sides of the elastic layer.

[0026] In the technical solution, multiple pre-tightening components are used to press the first mounting plate and the second mounting plate against the elastic layer. The first mounting plate and the second mounting plate are ensured to be parallel so that the stress of the elastic layer is perpendicular to the first mounting plate and the second mounting plate, thereby avoiding damage to the pre-tightening components and facilitating the setting of the shelf structure between the corresponding two shear keys.

[0027] In some embodiments, an area of ​​the rubber body facing the first mounting plate is smaller than an area of ​​the first mounting plate facing the rubber body.

[0028] In some embodiments, the areas and shapes of the opposite sides of the first mounting plate and the second mounting plate are the same.

[0029] In the technical solution, the first mounting plate and the second mounting plate have the same structure and can be mixed, which is convenient for production and manufacturing.

[0030] In some embodiments, the rubber body is parallel to the first mounting plate, and when there are multiple rubber bodies, the multiple rubber bodies are stacked.

[0031] In the technical solution, a plurality of rubber bodies can provide greater elastic force to support the corresponding two shear keys.

[0032] In some of the embodiments, the load of the rubber body is 2500 KN and the stiffness is greater than 250 KN / mm.

[0033] In the technical solution, this design is adopted to enable the cushion structure to meet actual usage requirements.

[0034] Based on the above technical solution, in the embodiment of the utility model, the elastic layer is pre-tightened by the pre-tightening assembly, the cushion structure is placed between two corresponding shear keys, the pre-tightening assembly is operated to release the fixation between the first mounting plate and the second mounting plate, and the first mounting plate and the second mounting plate respectively abut the two shear keys under the elastic force of the elastic layer to achieve the installation of the cushion structure, and the elastic support is achieved by the elastic layer. In addition, the elastic layer is a rubber body, which has a low cost, a high elastic force and will not deviate. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0036] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the cushion structure of the utility model;

[0037] Figure 2 It is a cross-sectional view of an embodiment of the cushion structure of the utility model;

[0038] Figure 3 An exploded view of an embodiment of the cushion structure of the utility model;

[0039] Figure 4 This is a schematic diagram of the overall structure of an embodiment of the cushion structure of the utility model;

[0040] Figure 5 It is a schematic diagram of the overall structure of an embodiment of the cushion structure of the utility model.

[0041] In the figure:

[0042] 100, first mounting plate; 200, second mounting plate; 300, rubber body; 400, pre-tightening bolt; 500, connecting nut; 600, through hole; 700, threaded hole. DETAILED DESCRIPTION

[0043] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0044] In the description of the present invention, it should be understood that the terms "center", "lateral", "longitudinal", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0045] The terms "first", "second", and "third" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Thus, a feature defined as "first", "second", and "third" may explicitly or implicitly include one or more of the features.

[0046] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0047] Please refer to all the accompanying drawings. In an illustrative embodiment of the cushion structure of the present invention, the cushion structure includes: a first mounting plate 100, a second mounting plate 200, an elastic layer and a pre-tightening assembly; wherein the second mounting plate 200 and the first mounting plate 100 are parallel and spaced apart; the elastic layer is disposed between the first mounting plate 100 and the second mounting plate 200, and the elastic layer abuts against the first mounting plate 100 and the second mounting plate 200 respectively; the elastic layer includes at least one rubber body 300; the pre-tightening assembly is used to fix the distance between the first mounting plate 100 and the second mounting plate 200 to compress the elastic layer.

[0048] The elastic layer is pre-tightened by the pre-tightening assembly, and the cushion structure is placed between the two corresponding shear keys. The pre-tightening assembly is operated to release the fixation between the first mounting plate 100 and the second mounting plate 200. Under the elastic force of the elastic layer, the first mounting plate 100 and the second mounting plate 200 respectively abut against the two shear keys to achieve the installation of the cushion structure, and the elastic support is achieved by the elastic layer. The elastic layer is a rubber body 300, which has a low cost, a high elastic force and will not deviate.

[0049] In some embodiments, a gasket is attached to the side of the first mounting plate 100 away from the elastic layer. In the technical solution, after the pre-tightened first mounting plate 100, the second mounting plate 200 and the elastic layer are inserted between the two corresponding shear keys, if the gap between the first mounting plate 100 or the second mounting plate 200 and the corresponding shear key is too large, a gasket can be inserted into the gap to reduce the distance of the gap. It is ensured that when the pre-tightening component is removed to release the stress, the rebound of the elastic layer can enable the first mounting plate 100 and the second mounting plate 200 to effectively support the corresponding shear key.

[0050] In some embodiments, the gasket is used to be disposed on a side of the first mounting plate 100 that is away from the second mounting plate 200 . That is, the gasket is disposed on the upper surface of the first mounting plate 100 .

[0051] During installation, the layer pad structure is placed between two corresponding shear keys, the second mounting plate 200 contacts the lower shear key, and there is a gap between the first mounting plate 100 and the upper shear key. If the gap is too large, a gasket is inserted into the gap.

[0052] Please refer to all the drawings. In some embodiments, multiple gaskets are stacked. Multiple rubber bodies 300 can provide greater elastic force to support the corresponding two shear keys. When the gap is too large, multiple gaskets can be inserted to reduce the distance of the gap to ensure that when the pre-tightening component is removed to release stress, the rebound of the elastic layer can enable the first mounting plate 100 and the second mounting plate 200 to effectively support the corresponding shear keys.

[0053] During the installation process, there is a gap between the first mounting plate 100 and the upper shear key. If the gap is too large, a gasket is inserted into the gap until the gap between the uppermost gasket and the lower surface of the upper shear key is less than 5 mm.

[0054] In some embodiments, the rubber body 300 is parallel to the first mounting plate 100 . When there are multiple rubber bodies 300 , the multiple rubber bodies 300 are stacked.

[0055] Furthermore, the shapes and thicknesses of the multiple rubber bodies 300 are the same, which facilitates batch production or procurement.

[0056] It is understandable that the rubber body 300 is made of rubber material, preferably natural rubber.

[0057] In some embodiments, the load of the rubber body 300 is 2500 KN, and the rigidity is greater than 250 KN / mm. Through this design, the cushion structure can meet actual use requirements.

[0058] In some embodiments, the first mounting plate 100 and the second mounting plate 200 are both steel plates, which have high structural strength and are not easily damaged.

[0059] In some embodiments, the first mounting plate 100 is made of Q355 material, and the surface is sandblasted, thermally sprayed with zinc-aluminum alloy coating and heavy anti-corrosion paint coating.

[0060] In some embodiments, the second mounting plate 200 is made of Q355 material, and the surface is sandblasted, thermally sprayed with zinc-aluminum alloy coating and heavy anti-corrosion paint coating.

[0061] For the convenience of description below, in this specification, the first mounting plate 100 is located at the top and the second mounting plate 200 is located at the bottom.

[0062] In some embodiments, the first mounting plate 100 is a rectangular plate, which may be a square or a rectangle.

[0063] In some embodiments, the second mounting plate 200 is a rectangular plate, which may be a square or a rectangle.

[0064] In some embodiments, the areas and shapes of the opposite sides of the first mounting plate 100 and the second mounting plate 200 are the same.

[0065] In some embodiments, the thickness of the first mounting plate 100 is 35 mm.

[0066] In some embodiments, the thickness of the second mounting plate 200 is 35 mm.

[0067] In some embodiments, the first mounting plate 100 and the second mounting plate 200 have the same thickness.

[0068] In some embodiments, the first mounting plate 100 and the second mounting plate 200 have the same shape and thickness, that is, the first mounting plate 100 and the second mounting plate 200 have the same structure and can be mixed for easy production and manufacturing.

[0069] In some embodiments, the rubber body 300 of the elastic layer is in a rectangular shape, which may be a square or a rectangle.

[0070] In some embodiments, when the first mounting plate 100 is square, the shape of the rubber body 300 is also square, and the area of ​​the rubber body 300 facing the first mounting plate 100 is smaller than the area of ​​the first mounting plate 100 facing the rubber body 300 .

[0071] In some embodiments, when the second mounting plate 200 is square, the shape of the rubber body 300 is also square, and the area of ​​the rubber body 300 facing the second mounting plate 200 is smaller than the area of ​​the second mounting plate 200 facing the rubber body 300 .

[0072] In some embodiments, when the first mounting plate 100 is rectangular, the shape of the rubber body 300 is also rectangular, and the area of ​​the rubber body 300 facing the first mounting plate 100 is proportionally smaller than the area of ​​the first mounting plate 100 facing the rubber body 300.

[0073] In some embodiments, when the second mounting plate 200 is rectangular, the shape of the rubber body 300 is also rectangular, and the area of ​​the rubber body 300 facing the second mounting plate 200 is proportionally smaller than the area of ​​the second mounting plate 200 facing the rubber body 300.

[0074] In some embodiments, multiple pre-tightening components are provided, and at least two pre-tightening components are respectively located on both sides of the elastic layer. Multiple pre-tightening components are used to press the first mounting plate 100 and the second mounting plate 200 against the elastic layer. Ensure that the first mounting plate 100 and the second mounting plate 200 are parallel so that the stress of the elastic layer is perpendicular to the first mounting plate 100 and the second mounting plate 200, avoid damage to the pre-tightening components, and facilitate the shelf structure to be set between the corresponding two shear keys.

[0075] In some embodiments, the area of ​​the rubber body 300 facing the first mounting plate 100 is smaller than the area of ​​the first mounting plate 100 facing the rubber body 300 .

[0076] In some embodiments, the first mounting plate 100 and the second mounting plate 200 are both in the positive direction, the rubber body 300 is in the shape of a rectangle, and the pre-tightening components are located on both sides of the rubber body 300 in the width direction.

[0077] In some embodiments, multiple pre-tightening components are disposed on both sides of the rubber body 300 in the width direction, preferably four or five on one side.

[0078] Furthermore, a plurality of pre-tightening components are arranged at intervals along the length direction of the rubber body 300. The intervals between any two adjacent pre-tightening components are the same.

[0079] Specifically, the distance between any two adjacent pre-tightening assemblies arranged along the length direction of the rubber body 300 is 155 mm.

[0080] In some embodiments, the pre-tightening assembly includes a pre-tightening bolt 400 and a connecting nut 500; the pre-tightening bolt 400 simultaneously penetrates and slides on the first mounting plate 100 and the second mounting plate 200, and the connecting nut 500 is threadedly connected to the pre-tightening bolt 400 to clamp the first mounting plate 100 and the second mounting plate 200. When the pre-tightening bolt 400 and the connecting nut 500 are rotated relative to each other, the first mounting plate 100 and the second mounting plate 200 are closer to each other. This is because in the threaded connection, the friction between the pre-tightening bolt 400 and the connecting nut 500 plays a role in dispersing and reducing the force.

[0081] Specifically, when the pre-tightening bolt 400 and the connecting nut 500 are tightly matched, the friction between them can effectively transmit force and disperse the force on the pre-tightening bolt 400, thereby reducing the force on a single part. In contrast, direct compression of the elastic layer requires overcoming the reaction force of the elastic layer, so a greater force is required.

[0082] In addition, the connection method between the pre-tightening bolt 400 and the connecting nut 500 can also control the compression of the elastic layer by adjusting the length and tightening degree of the pre-tightening bolt 400, thereby achieving more precise force control and position adjustment.

[0083] In some embodiments, the connecting nut 500 is located on a side of the second mounting plate 200 away from the first mounting plate 100 . Alternatively, the connecting nut 500 is located on a side of the first mounting plate 100 away from the second mounting plate 200 .

[0084] In other embodiments, the pre-tightening assembly includes a pre-tightening bolt 400, and a through hole 600 and a threaded hole 700 are respectively provided on the first mounting plate 100 and the second mounting plate 200. The pre-tightening bolt 400 passes through the through hole 600 and is threadedly connected to the corresponding threaded hole 700. The pre-tightening bolt 400 is directly passed through the through hole 600 and is threadedly connected to the threaded hole 700, and it is not necessary to separately provide a connecting nut 500, which saves costs and is easy to install. In addition, there is no connecting nut 500 on one side of the cushion structure, which can be completely flush to reduce the possibility of interference with the corresponding shear key.

[0085] In some embodiments, the pre-tightening bolt 400 is perpendicular to the first mounting plate 100. With this design, when the stress of the elastic layer is transferred to the pre-tightening bolt 400 after pre-tightening, it is transferred along the axial direction of the pre-tightening bolt 400. This avoids stress concentration at a certain point of the pre-tightening bolt 400, which may cause the pre-tightening bolt 400 to break or slip. This improves the strength of the connection.

[0086] In some embodiments, the through hole 600 is formed in the first mounting plate 100, and the pre-tightening bolt 400 can pass through and slide in the through hole 600. The threaded hole 700 is formed in the second mounting plate 200, and one end of the pre-tightening bolt 400 passes through the corresponding through hole 600 and is threadedly connected to the corresponding threaded hole 700.

[0087] In other embodiments, the through hole 600 is formed in the second mounting plate 200, and the pre-tightening bolt 400 can pass through and slide in the through hole 600. The threaded hole 700 is formed in the first mounting plate 100, and one end of the pre-tightening bolt 400 passes through the corresponding through hole 600 and is threadedly connected to the corresponding threaded hole 700.

[0088] It is worth noting that the through hole 600 can be provided on both the first mounting plate 100 and the second mounting plate 200, and the threaded hole 700 can also be provided on both the first mounting plate 100 and the second mounting plate 200. Adjustments are made according to actual installation requirements.

[0089] In addition, it should be noted that the positions of the through hole 600 and the threaded hole 700 are not located between the two shear keys. During the installation process, the cushion structure is inserted between the two corresponding shear keys, the second mounting plate 200 is fixed to the lower shear key, and the pre-tightening bolt 400 is rotated and disengaged from the corresponding threaded hole 700, so that the first mounting plate 100 and the second mounting plate 200 are separated from each other under the action of the elastic layer. If there is no gasket, the first mounting plate 100 abuts against the lower surface of the upper shear key. If there is a gasket, the uppermost gasket abuts against the lower surface of the upper shear key.

[0090] In the above process, the second mounting plate 200 is fixed to the shear key below in a manner including but not limited to welding, riveting, bolting, etc.

[0091] In some embodiments, the pre-tightening bolt 400 is made of 40Cr or 35CrMo alloy steel.

[0092] In the present application, before installing the cushion structure, the first mounting plate 100 and the second mounting plate 200 are pre-tightened by 5 mm in the direction in which they approach each other through a pre-tightening assembly.

[0093] Through the description of multiple embodiments of the cushion structure of the utility model, it can be seen that the cushion structure embodiments of the utility model have at least one or more of the following advantages:

[0094] 1. Pre-tighten the elastic layer through the pre-tightening component, put the cushion structure between the two corresponding shear keys, operate the pre-tightening component to release the fixation between the first mounting plate 100 and the second mounting plate 200, and under the elastic force of the elastic layer, the first mounting plate 100 and the second mounting plate 200 respectively abut against the two shear keys to achieve the installation of the cushion structure, and achieve elastic support through the elastic layer. The elastic layer is a rubber body 300, which has a low cost, high elasticity and will not deviate;

[0095] 2. A gasket is attached to the side of the first mounting plate 100 away from the elastic layer. In the technical solution, after the pre-tightened first mounting plate 100, the second mounting plate 200 and the elastic layer are inserted between the two corresponding shear keys, if the gap between the first mounting plate 100 or the second mounting plate 200 and the corresponding shear key is too large, a gasket can be inserted into the gap to reduce the distance of the gap. It is ensured that when the pre-tightening component is removed to release the stress, the rebound of the elastic layer can enable the first mounting plate 100 and the second mounting plate 200 to effectively support the corresponding shear keys.

[0096] Finally, it should be noted that: the various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0097] The above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model is described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the specific implementation methods of the utility model can still be modified or some technical features can be replaced by equivalents without departing from the spirit of the technical solution of the utility model, which should be included in the scope of the technical solution for which protection is requested in the utility model.

Claims

1. A cushion structure, characterized in that: The cushion structure is used to be arranged between two adjacent shear keys, and the cushion structure includes: a first mounting plate; A second mounting plate, the second mounting plate and the first mounting plate are arranged parallel and spaced apart; An elastic layer, wherein the elastic layer is disposed between the first mounting plate and the second mounting plate, and the elastic layer abuts against the first mounting plate and the second mounting plate respectively; The elastic layer includes at least one rubber body; A pre-tightening assembly is used to fix the distance between the first mounting plate and the second mounting plate to compress the elastic layer.

2. The cushion structure according to claim 1, characterized in that: A gasket is attached to a side of the first mounting plate away from the elastic layer.

3. The cushion structure according to claim 2, characterized in that: A plurality of the gaskets are stacked.

4. The cushion structure according to claim 1, characterized in that: The pre-tightening assembly includes a pre-tightening bolt and a connecting nut; the pre-tightening bolt simultaneously penetrates and slides on the first mounting plate and the second mounting plate, and the connecting nut is threadedly connected to the pre-tightening bolt to clamp the first mounting plate and the second mounting plate.

5. The cushion structure according to claim 1, characterized in that: The pre-tightening assembly includes a pre-tightening bolt. The first mounting plate and the second mounting plate are respectively provided with a through hole and a threaded hole. The pre-tightening bolt passes through the through hole and is threadedly connected to the corresponding threaded hole.

6. The cushion structure according to claim 4 or 5, characterized in that: The pre-tightening bolt is perpendicular to the first mounting plate.

7. The cushion structure according to claim 6, characterized in that: There are multiple pre-tightening components, and at least two of them are respectively located on both sides of the elastic layer.

8. The cushion structure according to claim 1, characterized in that: An area of ​​the rubber body facing the first mounting plate is smaller than an area of ​​the first mounting plate facing the rubber body.

9. The cushion structure according to claim 8, characterized in that: The area and shape of the opposite side of the first mounting plate and the second mounting plate are the same.

10. The cushion structure according to claim 1, characterized in that: The load of the rubber body is 2500KN, and the rigidity is greater than 250KN / mm.

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