Large-displacement tensile device

Abstract

The utility model relates to a large-displacement tensile device. The tensile device comprises a self-adaptive base, a tensile cable group, a first seat plate and a second seat plate, the self-adaptive base comprises a first tensile base, a second tensile base, a spring base and a self-adaptive spring; the first tensile base is arranged on the first seat plate; one end of the self-adaptive spring is connected with the first tensile base, and the other end of the self-adaptive spring is connected with the spring base; the second tensile base is connected with the second seat plate; and the tensile cable group penetrates through the first tensile base and the second tensile base to form a closed loop. Compared with the prior art, the tensile device provided by the utility model can provide good vertical tensile capacity for the support in a limited space of an existing support system, and has the characteristics of multidirectional horizontal large-displacement adaptability, good fatigue resistance and stable and reliable mechanical property.

Description

Technical Field

[0001] This utility model relates to the field of bridge structure technology, and in particular to a large displacement tensile device. Background Technology

[0002] Bridges, as vital arteries in transportation networks and crucial lifelines for the national economy, are subjected to various loads and environmental changes from the moment of construction. These changes can even lead to bridge collapse, causing severe casualties and economic losses. Inadequate performance of bridge bearing systems is a major factor contributing to bridge structural collapses. Traditional bearing systems such as plate rubber bearings, pot bearings, and spherical roller bearings generally lack tensile strength. When unbalanced forces such as wind loads, earthquakes, and eccentric vehicle loads exert an upward force on the beam, separation and collision can occur between the upper and lower structural components of the bearings, leading to unclear force transmission. In severe cases, the beam may detach from the piers, causing the bridge to collapse.

[0003] To address the aforementioned issues, additional tensile devices or tensile bearings are typically installed in the bearing system. However, existing technologies suffer from problems such as large structural dimensions, limited tensile capacity, complex stress distribution, and insufficient horizontal displacement capacity, posing challenges to design and application. Typically, tensile bearing designs often employ snap-fit ​​connections between the upper and lower bearing plates, resulting in significant limitations in horizontal displacement adaptability, structural complexity, and susceptibility to fatigue failure. Currently, utilizing bridge bearing systems for seismic isolation and mitigation is a primary strategy in bridge seismic design. This design requires excellent large horizontal displacement capacity, which existing tensile bearings often fail to meet. For instance, some existing designs directly connect the upper and lower structures with structural members. If these members are directly fixed to the upper and lower structures, to meet the common horizontal displacement requirement of 20–40 cm, with a typical 40 cm height constraint, the member elongation rate reaches 12–41%, far exceeding the elastic elongation rate of commonly available engineering materials.

[0004] Therefore, there is an urgent need for a tensile device with large displacement adaptability to ensure structural safety. Utility Model Content

[0005] The purpose of this utility model is to overcome the defects of the existing technology and provide a large displacement tensile device that can provide good vertical tensile strength for the support within the limited space of the existing support system, and has the characteristics of multi-directional large horizontal displacement adaptability, good fatigue resistance, and stable and reliable mechanical properties.

[0006] The objective of this utility model can be achieved through the following technical solutions:

[0007] The purpose of this utility model is to provide a large displacement tensile device, which includes an adaptive base, a tensile cable assembly, a first base plate, and a second base plate. The adaptive base includes a first tensile base, a second tensile base, a spring base, and an adaptive spring. The first tensile base is disposed on the first base plate. One end of the adaptive spring is connected to the first tensile base, and the other end is connected to the spring base. The second tensile base is connected to the second base plate. The tensile cable assembly passes through the first tensile base and the second tensile base and forms a closed loop.

[0008] Optionally, two first tensile bases are provided; the second tensile base and the two first tensile bases are arranged in a triangle on the elevation. That is, the first tensile base includes two bases, left and right, the second tensile base is generally a single base, and the first tensile base and the second tensile base are arranged in a triangle on the elevation.

[0009] Optionally, two first tensile bases and two second tensile bases are provided; the two second tensile bases and the two first tensile bases are arranged in a trapezoidal shape on the elevation. That is, multiple second tensile bases can also be used, corresponding to a trapezoidal shape on the elevation of the tensile cable.

[0010] Furthermore, the second tensile base is generally fixed to the second base plate, but it can also be configured to have limited sliding as a further supplement to the sliding capability.

[0011] Furthermore, when the horizontal displacement capacity requirement of the tensile device is not large, the first tensile base can be directly fixed to the first base plate, and the vertical shape of the tensile cable can be reasonably designed to adapt to the displacement requirements.

[0012] Furthermore, the first tensile base includes a first ear plate and a first shaft; the first shaft and the first ear plate are axially connected; the second tensile base includes a second ear plate and a second shaft; the second shaft and the second ear plate are axially connected.

[0013] Furthermore, the tension cable assembly includes tension cables; several tension cables are arranged side by side; the tension cables pass through a first shaft and a second shaft.

[0014] Furthermore, the tension cable forms a closed loop; the tension cable is slidably connected to the first shaft and the second shaft, and the tension cable can slide relative to the first shaft and the second shaft.

[0015] Furthermore, the tensile cable forms a triangular closed loop or a trapezoidal closed loop through the cable clamp.

[0016] Furthermore, one side of the first tensile base is connected to an adaptive spring; a stop block is provided on the other side of the first tensile base.

[0017] Furthermore, the adaptive spring can be a compression spring arranged inside the tensile base or a tension spring arranged outside the tensile base; the spring base and the adaptive spring are located on the same side of the tensile base. That is, the adaptive spring can be a compression spring arranged inside the tensile base, or it can be a tension spring arranged outside the tensile base, and the position of the spring base is adjusted synchronously.

[0018] Furthermore, the adaptive base also includes a base slide rail, which is configured and used in conjunction with the adaptive spring.

[0019] Furthermore, the first tensile base is slidably connected to the base slide rail; the base slide rail is fixedly connected to the first base plate; the first tensile base is connected to the first base plate via the base slide rail; the adaptive spring is arranged along the direction of the base slide rail; the spring base is fixed on the first base plate or the base slide rail to provide fixed support for the adaptive spring. The first tensile base can slide along the base slide rail to achieve geometric deformation of the tension anchor point.

[0020] Optionally, the first tensile base is fixed to the first base plate, and the tensile cable reduces its elongation through geometric deformation.

[0021] Furthermore, the inner side of the first tensile base is connected to an adaptive spring, which is arranged along the base slide rail direction. One end of the adaptive spring is connected to the first tensile base, and the other end is connected to the spring base. When the horizontal force pointing inward on the tensile base increases, the tensile base slides inward and the adaptive spring undergoes compression deformation. A stop block is provided on the outer side of the first tensile base. When the horizontal force pointing inward on the tensile base decreases, it prevents the adaptive spring from extending and causing the tensile base to slide outward. The same principle applies when the first tensile base is arranged on the outer side of the tensile base.

[0022] Furthermore, the first base plate is connected to the first structure via the first anchor bolt, and the second base plate is connected to the second structure via the second anchor bolt.

[0023] With the arrangement of this invention, the tension cables are connected at the second tension base. When the upper and lower structures are horizontally misaligned, the tension cable on one side shortens while the tension cable on the other side lengthens, and the deformation on both sides compensates for each other, effectively reducing the elongation rate of the tension cables. Furthermore, an adaptive spring is installed at the first tension base, which significantly improves the displacement adaptability of the tension device. This invention avoids the traditional design of directly setting the tension device between two points of the upper and lower structures. When a large misalignment occurs between the first and second structures, it avoids excessive strain on the tension cables, and achieves the ability to meet the structural tensile design requirements with common engineering materials within a limited space.

[0024] Furthermore, the spring base can be fixed to the first base plate or to the base slide rail, the purpose of which is to provide fixed support for the adaptive spring. That is, the spring base can be fixed to the first base plate or to the base slide rail, the purpose of which is to provide fixed support for the adaptive spring.

[0025] The adaptive spring can compress or stretch when the tension of the tension cable increases, automatically adjusting the tension of the tension cable and the position of the adaptive base, releasing the deformation capacity of the tension device, so that the tension device has excellent large displacement adaptability.

[0026] Furthermore, the base slide rail is connected to the first base plate via slide rail fixing bolts or by welding. That is, the purpose of the base slide rail is to provide horizontally sliding and vertically limiting constraints for the first tensile base, and its construction form is not specifically limited; it can be connected to the first base plate via slide rail fixing bolts or by welding or other connection methods.

[0027] Furthermore, the adaptive spring can be a polyurethane spring or a steel spring, and the specific structural form of the spring is not limited.

[0028] Furthermore, the cable clamp can be removed, and the tension cable can be directly anchored to the first base plate.

[0029] The design method of the aforementioned large displacement tensile device uses a cable with a certain degree of flexibility to transfer the tensile force between different structures, and through appropriate deformation of the tension device, to provide reliable tensile force within the elastic strain range of common materials in a limited space. The method includes the following steps:

[0030] S1. Determine the effective connection height H of the tensile device based on the space between the upper and lower structures. The effective connection height H refers to the center distance between the first tensile base and the second tensile base, and between the tensile cables.

[0031] S2. Determine the design displacement requirement d of the tensile device.

[0032] S3. Determine the center distance L of the outer tensile cables of the two bases on the left and right sides of the first tensile base in the initial state of the tensile device (the center distance L of the tensile cables is the same as the cable center distance L). According to the design displacement requirements, the specific process of step S3 is S3.1 or S3.2.

[0033] S3.1 When the design displacement requirement is relatively small, no base slide rail is set, the first tensile base is fixed on the first base plate, and the design requirement is L>2d.

[0034] (a) When the design displacement d is reached, the elongation of the tension cable is:

[0035]

[0036] (b) Determine the allowable tensile elongation S based on the material properties of the tensile cable. 允许 The formula used is:

[0037] S d ≤S 允许

[0038] (c) Determine the center distance L of the outer tensile cable of the tensile device, and further determine the design spacing between the left and right bases of the first tensile base. Through the design method, the elongation requirement of the tensile cable can be significantly reduced.

[0039] S3.2 When the design displacement requirement is large, a base slide rail and an adaptive spring are set, and the design requirement is L>2d.

[0040] (a) Determine the basic mechanical relationships of the device

[0041]

[0042]

[0043] Where F is the initial vertical design tension, F′ is the maximum allowable vertical tension, P0 is the initial elastic force of the adaptive spring, P1 and P2 are the elastic forces of the adaptive spring after deformation, θ is the angle between the tension cables at the second tensile base in the initial state, and θ1 and θ2 are the angles between the tension cables at the second tensile base after deformation.

[0044] (b) When the design displacement d is reached, the elongation of the tension cable is:

[0045]

[0046]

[0047]

[0048] Where Δ1 and Δ2 are the deformation of the adaptive spring, and K is the elastic stiffness of the adaptive spring.

[0049] (c) Determine the allowable tensile elongation S based on the material properties of the tensile cable. 允许 The formula used is:

[0050] S d ≤S 允许

[0051] The design was verified based on the maximum allowable vertical tensile force F′.

[0052] (d) Determine the center distance L of the outer tension cable of the tension device, and determine the elastic stiffness K of the adaptive spring.

[0053] S4. Complete the design of the device.

[0054] Furthermore, the upper and lower structures include an upper structure and a lower structure respectively disposed on the upper and lower parts of the tensile device.

[0055] Compared with the prior art, the present invention has the following beneficial effects:

[0056] 1) The large displacement tensile device provided by this utility model can provide good vertical tensile strength for the support within the limited space of the existing support system, and has the characteristics of multi-directional large horizontal displacement adaptability, good fatigue resistance, and stable and reliable mechanical properties.

[0057] 2) The large displacement tensile device of this utility model has small requirements for layout space, strong resistance, and flexible layout.

[0058] 3) The large displacement tensile device of this utility model can adapt to large displacement in the vertical tensile direction and has a wide range of applications.

[0059] 4) The large displacement tensile device of this utility model adopts a tensile cable with good flexibility for force transmission. The force transmission structure is simple, the force is clear, the stress amplitude is small, and the fatigue resistance is excellent.

[0060] 5) The large displacement tensile device of this utility model adopts a tensile cable with good flexibility for force transmission, has multi-directional adaptability, flexible arrangement direction, and convenient design.

[0061] 6) The large displacement tensile device of this utility model is easy to manufacture and process, has guaranteed quality, and is economical. Attached Figure Description

[0062] Figure 1 This is an elevation view of the large displacement tensile device in Embodiment 1 of this utility model;

[0063] Figure 2 This is a cross-sectional view of the first tensile base of the large displacement tensile device in Embodiment 1 of this utility model;

[0064] Figure 3 This is a cross-sectional view of the second tensile base of the large displacement tensile device in Embodiment 1 of this utility model;

[0065] Figure 4 This is a geometric and mechanical relationship diagram of the large displacement tensile device in the initial state of Embodiment 1 of this utility model.

[0066] Figure 5 This is a geometric-mechanical relationship diagram of the large displacement tensile device in Embodiment 1 of this utility model under deformation state.

[0067] Figure 6A comparison diagram of the elongation of the tensile components of the adaptive spring in the large displacement tensile device of Embodiment 2 of this utility model.

[0068] Figure 7 This is a comparison diagram of the elongation of the tensile components of the large displacement tensile device in Embodiment 1 of this utility model without considering the adaptive spring.

[0069] Numbering on the map:

[0070] 1. Tension cable, 2. First tension base, 3. Second tension base, 4. Stop block, 5. Spring base, 6. Adaptive spring, 7. Cable clamp, 8. First base plate, 9. Second base plate, 10. Base slide rail, 11. First anchor bolt, 12. Second anchor bolt, 13. Slide rail fixing bolt, 14. First structure, 15. Second structure. Detailed Implementation

[0071] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments. Any component models, material names, connection structures, control methods, etc., not explicitly described in this technical solution are considered common technical features disclosed in the prior art.

[0072] This utility model provides a large displacement tensile device, comprising an adaptive base, a tensile cable assembly, a first base plate, a second base plate, and anchor bolts. The adaptive base includes a first tensile base 2, a second tensile base 3, a spring base 5, an adaptive spring 6, and a base slide rail 10. The first tensile base 2 is located on the base slide rail 10 and connected to the first base plate 8 via the base slide rail 10. The first tensile base 2 can slide along the base slide rail 10 to achieve geometric deformation of the tensile anchor point. The base slide rail 10 is fixed to the first base plate 8 via slide rail fixing bolts 13. The second tensile base 3 is connected to the second base plate 9. The first tensile base 2 comprises two bases, left and right, while the second tensile base 3 generally uses a single base. The first tensile base 2 and the second tensile base 3 are arranged in a triangular configuration on the vertical plane. The first tensile base 2 includes a first ear plate 2-1 and a first shaft 2-2; the second tensile base 3 includes a second ear plate 3-1 and a second shaft 3-2. The tensile cable group is composed of several tensile cables 1 arranged side by side. The tensile cables 1 pass through the first shaft 2-2 and the second shaft 3-2, forming a triangular closed loop through cable clamps. The tensile cables 1 can slide relative to the first shaft 2-2 and the second shaft 3-2. The inner side of the first tensile base 2 is connected to an adaptive spring 6. The adaptive spring 6 is arranged along the base slide rail 10, with one end connected to the first tensile base 2 and the other end connected to the spring base 5. When the horizontal force pointing inward on the tensile base 2 increases, the tensile base 2 slides inward and the adaptive spring 6 is compressed and deformed. A stop block 4 is provided on the outer side of the first tensile base 2. When the horizontal force pointing inward on the tensile base 2 decreases, it prevents the adaptive spring 6 from extending and causing the tensile base 2 to slide outward. The first base plate 8 is connected to the first structure 14 via the first anchor bolt 11, and the second base plate 9 is connected to the second structure 15 via the second anchor bolt 12. This arrangement avoids the traditional design of directly placing tensile devices between two points on the upper and lower structures. When a large misalignment occurs between the first structure 14 and the second structure 15, it prevents excessive strain on the tensile cable 1, achieving structural tensile design requirements within a limited space using common engineering materials.

[0073] The adaptive spring 6 can be a compression spring arranged inside the tensile base 2, or a tension spring arranged outside the tensile base 2. The position of the spring base 5 is adjusted synchronously. The spring base 5 can be fixed on the first base plate 8 or on the base slide rail 10, its purpose being to provide fixed support for the adaptive spring. The adaptive spring 6 can undergo compression or tension deformation when the tension of the tension cable 1 increases, automatically adjusting the tension of the tension cable 1 and automatically adjusting the position of the adaptive base, releasing the deformation capacity of the tensile device, so that the tensile device has excellent large displacement adaptability.

[0074] Furthermore, the adaptive spring 6 can be a polyurethane spring or a steel spring, and the specific structural form of the spring is not limited.

[0075] Furthermore, the cable clamp 7 can be removed, and the tensile cable 1 can be directly anchored to the first base plate 8.

[0076] Furthermore, the purpose of the base slide rail 10 is to provide horizontally sliding and vertically limiting constraints for the first tensile base 2, and its construction form is not specifically limited; it can be connected to the first base plate 8 by slide rail fixing bolts 13, or by welding or other connection methods.

[0077] Furthermore, the second tensile base 3 is generally fixed on the second base plate 9, or it can be set to limited sliding as a further supplement to the sliding capability. Multiple second tensile bases 3 can also be used, corresponding to the trapezoidal shape of the tensile cable facade.

[0078] Furthermore, when the horizontal displacement capacity requirement of the tensile device is not large, the first tensile base 2 can be directly fixed on the first base plate 8, and the vertical shape of the tensile cable can be reasonably designed to adapt to the displacement requirements.

[0079] Example

[0080] like Figures 1-3 As shown, this embodiment provides a large displacement tensile device, which includes an adaptive base, a tensile cable assembly, a first base plate 8, and a second base plate 9. The adaptive base includes a first tensile base 2, a second tensile base 3, a spring base 5, an adaptive spring 6, and a base slide rail 10. The first tensile base 2 is located on the base slide rail 10. The base slide rail 10 is fixedly connected to the first base plate 8. The first tensile base 2 is connected to the first base plate 8 through the base slide rail 10. The first tensile base 2 can slide along the base slide rail 10 to achieve geometric deformation of the tensile anchor point. The adaptive spring 6 is arranged along the direction of the base slide rail 10, with one end connected to the first tensile base 2 and the other end connected to the spring base 5. The second tensile base 3 is connected to the second base plate 9.

[0081] In this embodiment, the first tensile base 2 comprises two bases, left and right, and the second tensile base 3 is a single base. The first tensile base 2 and the second tensile base 3 are arranged in a triangle on the elevation.

[0082] In this embodiment, the second tensile base 3 is fixed on the second base plate 9.

[0083] The first tensile base 2 includes a first ear plate 2-1 and a first shaft 2-2; the first shaft 2-2 and the first ear plate 2-1 are axially connected; the second tensile base 3 includes a second ear plate 3-1 and a second shaft 3-2; the second shaft 3-2 and the second ear plate 3-1 are axially connected.

[0084] The tensile cable group includes tensile cable 1; in this embodiment, the tensile cable group is composed of several tensile cables 1 arranged in parallel; the tensile cable 1 passes through the first shaft 2-2 and the second shaft 3-2.

[0085] In this embodiment, the tensile cable 1 forms a triangular closed loop through the cable clamp 7; the tensile cable 1 is slidably connected to the first shaft 2-2 and the second shaft 3-2, and the tensile cable 1 can slide relative to the first shaft 2-2 and the second shaft 3-2.

[0086] In this embodiment, the inner side of the first tensile base 2 is connected to the adaptive spring 6. The adaptive spring 6 is arranged along the base slide rail 10, with one end connected to the first tensile base 2 and the other end connected to the spring base 5. When the horizontal force pointing inward on the tensile base 2 increases, the tensile base 2 slides inward and the adaptive spring 6 is compressed and deformed. A stop block 4 is provided on the outer side of the first tensile base 2. When the horizontal force pointing inward on the tensile base 2 decreases, it prevents the adaptive spring 6 from extending and causing the tensile base 2 to slide outward.

[0087] In this embodiment, the adaptive spring 6 is a compression spring and is arranged inside the tensile base 2, and the position of the spring base 5 is adjusted synchronously.

[0088] The adaptive spring 6 can compress or stretch when the tension of the tension cable 1 increases, automatically adjusting the tension of the tension cable 1 and automatically adjusting the position of the adaptive base, releasing the deformation capacity of the tension device, so that the tension device has excellent large displacement adaptability.

[0089] The first base plate 8 is connected to the first structure 14 by the first anchor bolt 11, and the second base plate 9 is connected to the second structure 15 by the second anchor bolt 12.

[0090] With the arrangement of this utility model, the tension cable 1 is connected through the second tension base 3. When the upper and lower structures are horizontally misaligned, the tension cable 1 on one side shortens while the tension cable 1 on the other side lengthens, and the deformation on both sides compensates for each other, effectively reducing the elongation rate of the tension cable 1. Furthermore, an adaptive spring 6 is set at the first tension base 2, which significantly improves the displacement adaptability of the tension device. This utility model avoids the traditional design of directly setting the tension device between two points of the upper and lower structures. When a large misalignment occurs between the first structure 14 and the second structure 15, it avoids excessive strain on the tension cable 1, and realizes that common engineering materials can meet the structural tension design requirements within a limited space.

[0091] In this embodiment, the spring base 5 is fixed on the first base plate 8, and its purpose is to provide fixed support for the adaptive spring 6.

[0092] In this embodiment, the base slide rail 10 is connected to the first base plate 8 by slide rail fixing bolts 13. The purpose of the base slide rail 10 is to provide horizontally sliding and vertically limiting constraints for the first tensile base 2, and its construction form is not specifically limited.

[0093] The adaptive spring 6 can be a polyurethane spring or a steel spring, and the specific structural form of the spring is not limited.

[0094] This embodiment also provides a design method for the aforementioned large displacement tensile device. It uses a cable with a certain degree of flexibility to transmit tensile force between different structures, and through appropriate deformation of the tension device, provides reliable tensile force within the elastic strain range of common materials in a limited space. The method includes the following steps:

[0095] S1. Determine the effective connection height H of the tensile device based on the space between the upper and lower structures. The effective connection height H refers to the center distance between the first tensile base 2 and the second tensile base 3, and between the tensile cables 1.

[0096] S2. Determine the design displacement requirement d of the tensile device.

[0097] S3. Determine the center distance L of the outer tensile cables 1 of the two bases on the left and right sides of the first tensile base 2 in the initial state of the tensile device.

[0098] S3.2 When the design displacement requirement is large, set the base slide rail 10 and the adaptive spring 6, and the design requirement is L>2d.

[0099] (a) such as Figure 4 , Figure 5 As shown, the basic mechanical relationships of the device are determined.

[0100]

[0101]

[0102] Where F is the initial vertical design tension, F′ is the maximum allowable vertical tension, P0 is the initial elastic force of the adaptive spring 6, P1 and P2 are the elastic forces of the adaptive spring 6 after deformation, θ is the included angle of the tension cable 1 at the second tensile base 3 in the initial state, and θ1 and θ2 are the included angles of the tension cable 1 at the second tensile base 3 after deformation.

[0103] (b) When the design displacement d is reached, the elongation of tension cable 1 is:

[0104]

[0105]

[0106]

[0107] Where Δ1 and Δ2 are the deformation of the adaptive spring 6, and K is the elastic stiffness of the adaptive spring 6.

[0108] (c) Determine the allowable tensile elongation S based on the material properties of the tensile cable 1. 允许 The formula used is:

[0109] S d ≤S 允许

[0110] The design was verified based on the maximum allowable vertical tensile force F′.

[0111] (d) Determine the center distance L of the outer tension cable 1 of the tension device, and determine the elastic stiffness K of the adaptive spring 6.

[0112] S4. Complete the design of the device.

[0113] Example 2

[0114] This embodiment provides a large displacement tensile device. The difference between the large displacement tensile device in this embodiment and the tensile device in embodiment 1 is that the tensile device in this embodiment does not have a base slide rail 10, and the first tensile base 2 is fixed on the first base plate 8.

[0115] This embodiment also provides a design method for a large displacement tensile device. The difference between this method and the design method in Embodiment 1 is that step S3 in this embodiment is as follows:

[0116] S3. Determine the center distance L of the outer tensile cables 1 of the two bases on the left and right sides of the first tensile base 2 in the initial state of the tensile device.

[0117] S3.1 When the design displacement requirement is relatively small, the base slide rail 10 is not set, the first tensile base 2 is fixed on the first base plate 8, and the design requirement is L>2d.

[0118] (a) When the design displacement d is reached, the elongation of the tension cable is:

[0119]

[0120] (b) Determine the allowable tensile elongation S based on the material properties of the tensile cable 1. 允许 The formula used is:

[0121] S d ≤S 允许

[0122] (c) Determine the center distance L of the outer tensile cable 1 of the tensile device, and further determine the design spacing between the left and right bases of the first tensile base 2. Through the design method, the elongation requirement of the tensile cable 1 can be significantly reduced.

[0123] The remaining steps are the same as in Example 1.

[0124] like Figure 6 As shown in Series 1, the cable elongation of this invention without the base rail 10 is given, and compared with... Figure 6 The cable elongation rate of the conventional direct vertical connection method shown in Series 2 is significantly reduced by this invention, making it possible for commonly used engineering materials to meet design requirements.

[0125] The above description of the embodiments is provided to enable those skilled in the art to understand and use the utility model. It will be apparent to those skilled in the art that various modifications can be easily made to these embodiments, and the general principles described herein can be applied to other embodiments without inventive effort. Therefore, the present utility model is not limited to the above embodiments, and any improvements and modifications made by those skilled in the art based on the disclosure of the present utility model without departing from its scope should be within the protection scope of the present utility model.

Claims

1. A large displacement tension resisting device characterized by, The tensile-resistant device comprises an adaptive base, a tensile-resistant cable group, a first seat plate (8), and a second seat plate (9); The adaptive base comprises a first tensile-resistant base (2), a second tensile-resistant base (3), a spring base (5), and an adaptive spring (6); The first tensile-resistant base (2) is arranged on the first seat plate (8); One end of the adaptive spring (6) is connected with the first tensile-resistant base (2), and the other end is connected with the spring base (5); The second tensile-resistant base (3) is connected with the second seat plate (9); The tensile-resistant cable group passes through the first tensile-resistant base (2) and the second tensile-resistant base (3) and forms a closed loop; the tensile-resistant cable group comprises a tensile-resistant cable (1).

2. A large displacement tension resisting device according to claim 1, wherein, The first tensile-resistant base (2) is arranged in two; The second tensile-resistant base (3) is arranged in two; 3. A large displacement tension resisting device according to claim 1, wherein, The second tensile-resistant base (3) is arranged in two; The second tensile-resistant base (3) is arranged in two; The second tensile-resistant base (3) is arranged in two; 4. A large displacement tension resisting device according to claim 1, wherein, The first tensile-resistant base (2) comprises a first ear plate (2-1) and a first shaft rod (2-2); The first shaft rod (2-2) and the first ear plate (2-1) are axially connected; The second tensile-resistant base (3) comprises a second ear plate (3-1) and a second shaft rod (3-2); The second shaft rod (3-2) and the second ear plate (3-1) are axially connected.

5. A large displacement tension resisting device according to claim 4, wherein, The tensile-resistant cable (1) passes through the first shaft rod (2-2) and the second shaft rod (3-2), and the tensile-resistant cable (1) forms a closed loop; The tensile-resistant cable (1) is slidably connected with the first shaft rod (2-2) and the second shaft rod (3-2).

6. A large displacement tension resisting device according to claim 1, wherein, One side of the first tensile-resistant base (2) is connected with the adaptive spring (6); The other side of the first tensile-resistant base (2) is provided with a stop block (4).

7. A large displacement tension resisting device according to claim 1, wherein The adaptive spring (6) is a compression spring arranged inside the tensile-resistant base (2) or a tension spring arranged outside the tensile-resistant base (2); The spring base (5) and the adaptive spring (6) are arranged on the same side of the tensile-resistant base (2).

8. A large displacement tension resisting device according to claim 1, wherein, The adaptive base further comprises a base sliding rail (10); The first tensile-resistant base (2) is slidably connected with the base sliding rail (10); The base sliding rail (10) is fixedly connected with the first seat plate (8); The first tensile-resistant base (2) is connected with the first seat plate (8) through the base sliding rail (10); The adaptive spring (6) is arranged along the direction of the base sliding rail (10); The spring base (5) is fixed on the first seat plate (8) or the base sliding rail (10) and is used for providing fixed support for the adaptive spring (6).

9. A large displacement tension resisting device according to claim 8, wherein, The base sliding rail (10) is connected with the first seat plate (8) through a sliding rail fixing bolt (13) or is connected with the first seat plate (8) through welding.

10. A large displacement tension resisting device according to claim 8, wherein, The base sliding rail (10) is arranged in cooperation with the adaptive spring (6).

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