Large-span continuous bridge truss support

Abstract

The application discloses a large-span continuous bridge truss support and belongs to the technical field of truss supports. The large-span continuous bridge truss support can make the assembly component drive the first guide component to move when the continuous bridge truss is subjected to vibration, so that the first guide component can be displaced and extrude the connecting seat, the second spring is deformed by the extrusion of the connecting seat to buffer the vibration, and the continuous bridge truss can still play a buffering role when the continuous bridge truss is subjected to smaller vibration, so that the damage of the continuous bridge truss can be avoided. In addition, the supporting seat continuously applies force to the buffering component, so that the buffering component reaches the maximum stroke process, the toothed plate and the threaded transmission component are driven to transmit, the positioning component is driven by the threaded transmission component to be separated from the positioning port, at this time, the buffering component can be elastically reset in another direction, so that the buffering component can be prevented from reaching the limit to affect the elastic coefficient, and meanwhile, accurate resetting can be ensured. In addition, the clamping block can be sequentially clamped into the positioning port when subjected to different vibration forces, so that multi-section limiting buffering operation is realized.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of truss support, in particular to a large-span continuous bridge truss support. BACKGROUND

[0002] In the existing connected building, the connection between the large-span continuous bridge truss and the two sides of the main structure is mostly connected through rubber bearings, which can produce a certain amount of displacement under the action of earthquakes and typhoons, reducing the possibility of cracking between the large-span continuous bridge truss and the two sides of the main structure.

[0003] At present, the common rubber bearing in the prior art can only slide in one direction or two directions to reduce horizontal seismic force, and it is difficult to buffer different angles under vibration conditions. Moreover, the displacement of the fluorine plate type rubber bearing is not limited, and the moving speed under the small earthquake of the building is difficult to control, which can easily cause a large impact on the edge and cause damage to the large-span continuous bridge truss. If the deformation capacity is directly limited to be small, the large-span continuous bridge truss will be difficult to produce large deformation under large vibration displacement and be damaged. Moreover, in order to reset after the earthquake, a compression spring is generally used to press the support seat. However, when the large-span continuous bridge truss vibrates, part of the compression spring will be compressed to the limit position, thereby affecting the elastic coefficient of the compression spring, reducing the spring force, and making the support seat unable to reset accurately in the sliding cavity. Therefore, it is of great significance to research a new large-span continuous bridge truss support to solve the above problems. SUMMARY

[0004] This section aims to summarize some aspects of the embodiments of the present application and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the abstract and title of the specification to avoid obscuring the purpose of this section, abstract and title. Such simplifications or omissions cannot be used to limit the scope of the present application.

[0005] In view of the above and / or existing problems of the truss support, the present application is proposed.

[0006] Therefore, the technical problem to be solved by the present application is that the common rubber bearing in the prior art is difficult to buffer different angles under vibration conditions, and the displacement of the fluorine plate type rubber bearing is not limited. Moreover, in order to reset after the earthquake, a compression spring is generally used to press the support seat. However, when the large-span continuous bridge truss vibrates, part of the compression spring will be compressed to the limit position, thereby affecting the elastic coefficient of the compression spring, reducing the spring force, and making the support seat unable to reset accurately in the sliding cavity.

[0007] To achieve the above object, the present application provides the following technical scheme: a large-span continuous bridge truss support, comprising,

[0008] The truss connecting mechanism comprises a fixed seat, a support seat is arranged in the fixed seat, an assembly component is slidably connected to the top of the support seat, the assembly component penetrates a first guide component, the two ends of the first guide component slide on the edges of the two side walls of the fixed seat, and the first guide component extends downward into the fixed seat, four positioning openings are formed in the two sides of the bottom wall of the fixed seat;

[0009] The multi-section buffer mechanism comprises four frames, the two sides of each two frames are connected with two second guide components, the second guide components are fixedly connected in the fixed seat, a first spring is fixedly connected to one side of the frame, the end of the first spring away from the frame is fixedly connected with the side wall of the fixed seat, a threaded transmission component is assembled in the fixed seat, one side of the threaded transmission component is fixedly connected with two positioning components, the two positioning components are slidably connected on the frame, and one end of the positioning component is inserted into the positioning opening, a buffer component is fixedly connected to the other side of the fixed seat, and a toothed plate is fixedly connected to the side of the buffer component away from the frame.

[0010] As a further scheme of the present application, the top and bottom of the support seat are provided with second wear-resistant layers, a third wear-resistant layer is pressed on the lower second wear-resistant layer, and the third wear-resistant layer is arranged on the bottom wall of the fixed seat.

[0011] As a further scheme of the present application, the assembly component comprises an assembly plate, four assembly holes are formed in the assembly plate, a connecting column is fixedly connected to the bottom of the assembly plate, a connecting table is fixedly connected to the bottom end of the connecting column, the connecting table is arranged above the support seat, and a first wear-resistant layer is arranged on the bottom of the connecting table.

[0012] As a further scheme of the present application, the bottom of the connecting table is a convex arc surface, the top of the support seat is a concave arc surface, and the first wear-resistant layer and the upper second wear-resistant layer are arranged in a covering mode.

[0013] As a further scheme of the present application, the two sides of the fixed seat are fixedly connected with two mounting blocks.

[0014] As a further scheme of the present application, the first guide component comprises a movable table, a through opening is formed in the upper portion of the movable table, the connecting column penetrates the through opening, two support plates are fixedly connected to the bottom of the movable table, two guide edges are arranged on the two sides of the movable table, and the two guide edges are embedded between the upper portion of the fixed seat and the upper wall and slide.

[0015] As a further scheme of the present application, the second guide component comprises a guide rail, two sliding blocks are slidably connected in the guide rail, the sliding blocks are fixedly connected with the frame, and two through holes are formed in the frame.

[0016] As a further scheme of the present application: the buffer assembly comprises two first telescopic rods, both ends of the first telescopic rod are fixedly connected with fixed blocks, the second spring is fixedly connected between the two fixed blocks, the second spring is sleeved on the first telescopic rod, wherein the two fixed blocks are hingedly connected with the two fixed frames through the pin shafts respectively, the two fixed frames are fixedly connected on the frame, and the other two fixed blocks are hingedly connected with the connecting seat through the pin shafts, and the connecting seat is fixedly connected with the toothed plate.

[0017] As a further scheme of the present application: the screw transmission assembly comprises a screw rod, the screw rod is rotatably connected on the frame through two bearings, the middle part of the screw rod is fixedly connected with a gear, the threads on the two sides of the screw rod are oppositely arranged, two nuts are threadedly connected on the screw rod, and one side of the nut is fixedly connected with a connecting block.

[0018] As a further scheme of the present application: the positioning assembly comprises a rectangular sleeve, the rectangular sleeve is fixedly connected with the connecting block, one side of the rectangular sleeve is fixedly connected with a fixed plate, the fixed plate is fixedly connected with a second telescopic rod and a third spring, one end of the second telescopic rod and the third spring is fixedly connected with a clamping block, the clamping block is clamped into one of the positioning ports, and one side of the clamping block is arranged as an inclined surface.

[0019] Compared with the prior art, the present application has the beneficial effects that: the long-span continuous bridge truss support, when the continuous bridge truss is vibrated, the assembly drives the first guide assembly to move, the first guide assembly can be displaced and extrude the connecting seat, the connecting seat extrudes the second spring to deform and buffer the vibration, the continuous bridge truss can still be buffered when the vibration is small, thereby avoiding the damage of the continuous bridge truss, the support seat continuously applies force to the buffer assembly, the buffer assembly reaches the maximum stroke process, the toothed plate drives the screw transmission assembly to drive the positioning assembly to be separated from the positioning port, at this time, the buffer assembly can be elastically reset in another direction, thereby avoiding the influence of the buffer assembly reaching the limit on the elastic coefficient, and ensuring accurate resetting, and the clamping block can be sequentially clamped into the positioning port under different vibration forces, and multi-section limiting buffering operation is realized. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced below, and obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor. Among them:

[0021] Figure 1 The three-dimensional structure schematic diagram of the long-span continuous bridge truss support provided by the embodiments of the present application.

[0022] Figure 2 A large-span continuous bridge truss support three-dimensional section structure schematic view according to the embodiment of the present application.

[0023] Figure 3 A large-span continuous bridge truss support three-dimensional section structure schematic view according to the embodiment of the present application.

[0024] Figure 4 A large-span continuous bridge truss support three-dimensional section structure schematic view according to the embodiment of the present application.

[0025] Figure 5 A large-span continuous bridge truss support three-dimensional section structure schematic view according to the embodiment of the present application.

[0026] Figure 6 A large-span continuous bridge truss support three-dimensional section structure schematic view according to the embodiment of the present application.

[0027] Figure 7 A large-span continuous bridge truss support three-dimensional section structure schematic view according to the embodiment of the present application.

[0028] Figure 8 A large-span continuous bridge truss support three-dimensional section structure schematic view according to the embodiment of the present application.

[0029] Figure 9 A large-span continuous bridge truss support three-dimensional section structure schematic view according to the embodiment of the present application.

[0030] Figure 10 A large-span continuous bridge truss support three-dimensional section structure schematic view according to the embodiment of the present application.

[0031] Figure 11 A large-span continuous bridge truss support three-dimensional section structure schematic view according to the embodiment of the present application.

[0032] In the figure: 100, truss connecting mechanism; 101, fixed seat; 102, support seat; 103, assembly component; 1031, assembly plate; 1032, connecting column; 1033, connecting table; 1034, first wear-resistant layer; 1035, assembly plate; 104, second wear-resistant layer; 105, mounting block; 106, positioning port; 107, third wear-resistant layer; 108, first guide assembly; 1081, movable table; 1082, through port; 1083, support plate; 1084, guide edge; 200, multi-section buffer mechanism; 201, frame; 202, second guide assembly; 2021, guide rail; 2022, sliding block; 203, screw transmission assembly; 2031, screw rod; 2032, nut; 2033, bearing; 2034, gear; 2035, connecting block; 204, first spring; 205, toothed plate; 206, buffer assembly; 2061, first telescopic rod; 2062, second spring; 2063, fixed block; 2064, fixed frame; 2065, connecting seat; 207, positioning assembly; 2071, rectangular sleeve; 2072, fixed plate; 2073, third spring; 2074, second telescopic rod; 2075, clamping block; 208, through hole. DETAILED DESCRIPTION

[0033] In order to make the above objectives, features and advantages of the present application more obvious and easy to understand, the specific embodiments of the present application are described in detail below with reference to the accompanying drawings.

[0034] In the following description, a large number of specific details are set forth in order to facilitate a thorough understanding of the present application, but the present application can also be implemented in other ways different from those described herein, and those skilled in the art can make similar generalizations without departing from the concept of the present application, therefore the present application is not limited by the specific embodiments disclosed below.

[0035] Secondly, the present application is described in detail in combination with the schematic diagram, in the detailed description of the embodiments of the present application, in order to facilitate the description, the cross-sectional view of the device structure will be partially enlarged without general proportion, and the schematic diagram is only an example, which should not limit the scope of protection of the present application herein. In addition, the three-dimensional spatial dimensions of length, width and depth should be included in actual manufacture.

[0036] Thirdly, the "one embodiment" or "embodiment" referred to herein means that the specific features, structures or characteristics can be included in at least one implementation of the present application. "In one embodiment" appearing in different places in the specification does not mean the same embodiment, nor is it an embodiment that is independent of or selected from other embodiments.

[0037] Example 1

[0038] As Figures 1-10As shown, the present application provides a technical solution: a large-span continuous bridge truss support,

[0039] The truss connecting mechanism 100 comprises a fixed seat 101, two mounting blocks 105 are fixedly connected to the two sides of the fixed seat 101, the fixed seat 101 can be fixed through the mounting blocks 105, the stability of the fixed seat 101 is maintained, a support seat 102 is arranged in the fixed seat 101, the top and bottom of the support seat 102 are provided with second wear-resistant layers 104, the lower second wear-resistant layer 104 is pressed and combined with a third wear-resistant layer 107, the surfaces of the second wear-resistant layer 104 and the third wear-resistant layer 107 have good smoothness, the second wear-resistant layer 104 can smoothly move on the third wear-resistant layer 107, the second wear-resistant layer 104 and the third wear-resistant layer 107 have good wear resistance, the wear resistance is improved, the third wear-resistant layer 107 is arranged on the bottom wall of the fixed seat 101, a mounting assembly 103 is slidably connected to the top of the support seat 102, the mounting assembly 103 comprises a mounting plate 1031, four mounting holes are formed in the mounting plate 1031, the mounting holes can be used to fix the continuous bridge truss by mounting bolts, the fixing of the continuous bridge truss is ensured, a connecting column 1032 is fixedly connected to the bottom of the mounting plate 1031, a connecting table 1033 is fixedly connected to the bottom end of the connecting column 1032, the connecting table 1033 is arranged above the support seat 102, a first wear-resistant layer 1034 is arranged on the bottom of the connecting table 1033, the bottom of the connecting table 1033 is a convex arc surface, the top of the support seat 102 is a concave arc surface, the convex arc surface and the concave arc surface are embedded in each other, the convex arc surface can move at multiple angles on the concave arc surface, the multi-directional small-distance displacement requirement of the continuous bridge truss is met, the risk that the connection is easily affected to cause fracture is avoided, the first wear-resistant layer 1034 and the second wear-resistant layer 104 have smoothness, the smooth movement of the connecting table 1033 is ensured, the first wear-resistant layer 1034 and the second wear-resistant layer 104 have good wear resistance, the first wear-resistant layer 1034 is arranged above the second wear-resistant layer 104, the mounting assembly 103 penetrates a first guide assembly 108, the first guide assembly 108 comprises a movable table 1081, a through opening 1082 is formed in the top of the movable table 1081, the connecting column 1032 penetrates the through opening 1082, the penetration of the connecting column 1032 is ensured through the through opening 1082, the movement of the connecting column 1032 can drive the movement of the movable table 1081, two support plates 1083 are fixedly connected to the bottom of the movable table 1081, two guide edges 1084 are arranged on the two sides of the movable table 1081, the two guide edges 1084 are embedded above the fixed seat 101 and the upper wall and slide, the two guide edges 1084 can slide on the two sides of the fixed seat 101, so that the movable table 1081 can be guided, the stable movement of the movable table 1081 is maintained, the two ends of the first guide assembly 108 slide on the edges of the two side walls of the fixed seat 101, the first guide assembly 108 extends downward into the fixed seat 101, and four positioning openings 106 are formed in the bottom wall of the fixed seat 101.

[0040] The multi-section buffering mechanism 200 comprises four frames 201, two sides of every two frames 201 are connected with two second guiding assemblies 202, the second guiding assembly 202 comprises a guide rail 2021, two sliding blocks 2022 are slidingly connected in the guide rail 2021, the sliding block 2022 can be guided by the guide rail 2021, so that the sliding block 2022 stably slides along the guide rail 2021, thereby the frame 201 keeps stable movement, the sliding block 2022 is fixedly connected with the frame 201, two through holes 208 are formed in the frame 201, the gear plate 205 can pass into the frame 201 through the through hole 208, so that the gear plate 205 can be smoothly driven by the gear plate 205, the second guiding assembly 202 is fixedly connected in the fixed seat 101, the fixed seat 101 is assembled with a threaded transmission assembly 203, one side of the threaded transmission assembly 203 is fixedly connected with two positioning assemblies 207, the two positioning assemblies 207 are slidingly connected on the frame 201, and one end of the positioning assembly 207 is inserted into the positioning port 106, the other side of the fixed seat 101 is fixedly connected with a buffering assembly 206, the buffering assembly 206 comprises two first telescopic rods 2061, the first telescopic rod 2061 can guide the second spring 2062, so that the second spring 2062 keeps stable expansion, secondly, the second spring 2062 can buffer the vibration of the connecting bridge truss, both ends of the first telescopic rod 2061 are fixedly connected with fixed blocks 2063, the two fixed blocks 2063 are fixedly connected with the second spring 2062, the second spring 2062 is sleeved on the first telescopic rod 2061, wherein the two fixed blocks 2063 are respectively hinged with two fixed frames 2064 through a pin shaft, the fixed block 2063 can realize angular movement through the pin shaft, so that the first telescopic rod 2061 and the second spring 2062 can be angularly adjusted, and the connecting seat 2065 can also keep translational movement, so that the gear plate 205 can be smoothly driven by the gear 2034, the two fixed frames 2064 are fixedly connected on the frame 201, the other two fixed blocks 2063 are hinged with the connecting seat 2065 through a pin shaft, the connecting seat 2065 is fixedly connected with the gear plate 205, and the buffering assembly 206 is fixedly connected with the gear plate 205 on the side away from the frame 201.

[0041] In this embodiment, when the bridge truss is vibrating, the assembly plate 1031 can drive the connecting column 1032 to move, the connecting column 1032 drives the connecting table 1033 to move, the connecting table 1033 can drive the support base 102 to move through the convex arc surface and the concave arc surface, and when subjected to different direction forces, the assembly plate 1031 can also drive the connecting table 1033 to move through the connecting column 1032, so that the connecting table 1033 can produce small displacement in different directions above the support base 102, thereby keeping a certain movement when the bridge truss is subjected to small vibration force, and meeting the movement in different directions, preventing the hard connection from causing the connecting part to be easily broken and affecting the stability of the bridge truss. In addition, during the vibration process, the assembly plate 1031 drives the connecting column 1032 to move, the connecting column 1032 drives the movable table 1081 to move, the movable table 1081 drives the support plate 1083 to move, the support plate 1083 displacement can extrude the connecting seat 2065 to move, the connecting seat 2065 drives the second spring 2062 to deform through the fixed block 2063, the second spring 2062 can exert a counterforce to buffer the vibration, thereby meeting the operation of buffering the vibration of the bridge truss. The above can avoid the problem that the edge is subjected to impact to cause the bridge truss to be damaged and broken.

[0042] Embodiment 2

[0043] In combination with the accompanying drawings Figure 5 , the accompanying drawings Figures 7-11 , it is concluded that the assembly component 103 includes the assembly plate 1031, four assembly holes are formed in the assembly plate 1031, the bottom of the assembly plate 1031 is fixedly connected with the connecting column 1032, the bottom end of the connecting column 1032 is fixedly connected with the connecting table 1033, the connecting table 1033 is arranged above the support base 102, and the bottom of the connecting table 1033 is provided with the first wear-resistant layer 1034.

[0044] The buffer assembly 206 includes two first telescopic rods 2061, both ends of the first telescopic rod 2061 are fixedly connected with the fixed block 2063, the two fixed blocks 2063 are fixedly connected with the second spring 2062, the second spring 2062 is sleeved outside the first telescopic rod 2061, the two fixed blocks 2063 are hingedly connected with the two fixed frames 2064 through the pin shafts, respectively, the two fixed frames 2064 are fixedly connected on the frame 201, and the other two fixed blocks 2063 are hingedly connected with the connecting seat 2065 through the pin shafts, and the connecting seat 2065 is fixedly connected with the toothed plate 205.

[0045] The threaded transmission assembly 203 comprises a screw rod 2031, the screw rod 2031 is rotatably connected to the frame 201 through two bearings 2033, the screw rod 2031 can be connected to the frame 201 through the bearings 2033, so that the position of the screw rod 2031 is fixed, and the screw rod 2031 can also be kept smooth rotation through the bearings 2033, reduce the rotation resistance of the screw rod 2031, one side of the frame 201 is fixedly connected with a first spring 204, one end of the first spring 204 away from the frame 201 is fixedly connected with the side wall of the fixed seat 101, the middle part of the screw rod 2031 is fixedly connected with a gear 2034, the gear 2034 can drive the screw rod 2031 to rotate through the gear transmission of the toothed plate 205, the threads on the two sides of the screw rod 2031 are oppositely arranged, and the threads on the screw rod 2031 from the middle part to the two ends are oppositely arranged, so that the screw rod 2031 can drive the two nuts 2032 to move close to or away from each other, and the two nuts 2032 can drive the positioning assembly 207 to move away from the positioning port 106 when moving close to each other, so that the deformation recovery of the second spring 2062 can be realized, and the first spring 204 and the second spring 2062 can realize double damping operation, the screw rod 2031 is threadedly connected with two nuts 2032, one side of the nut 2032 is fixedly connected with a connecting block 2035;

[0046] The positioning assembly 207 comprises a rectangular sleeve 2071, the rectangular sleeve 2071 can smoothly slide on the frame 201, so that the nut 2032 and the fixed plate 2072 move up and down smoothly, the rectangular sleeve 2071 is fixedly connected with the connecting block 2035, one side of the rectangular sleeve 2071 is fixedly connected with a fixed plate 2072, the fixed plate 2072 is fixedly connected with a second telescopic rod 2074 and a third spring 2073, the second telescopic rod 2074 can guide the third spring 2073, so that the third spring 2073 stably extends and retracts, so that the clamping block 2075 smoothly clamps into the positioning port 106, and then the elastic force of the third spring 2073 can drive the clamping block 2075 to clamp into the positioning port 106, so as to position the frame 201, one end of the second telescopic rod 2074 and the third spring 2073 is fixedly connected with a clamping block 2075, the clamping block 2075 clamps into one of the positioning ports 106, one side of the clamping block 2075 is provided as an inclined surface, the inclined surface of the clamping block 2075 is arranged, so that when the first spring 204 is reset, the inclined surface of the clamping block 2075 is pressed by the positioning port 106 to move, so that the clamping block 2075 is separated from the positioning port 106, and the clamping block 2075 smoothly recovers to the initial state, so that the periodic damping operation of the continuous girder truss can be repeatedly carried out.

[0047] In the embodiment: the force is transmitted to the assembly plate 1031 through the bridge truss vibration, so that the assembly plate 1031 can drive the connecting column 1032 and the movable table 1081 to move, the movable table 1081 drives the support plate 1083 to move, the displacement of the support plate 1083 can extrude the connecting seat 2065 to move, the connecting seat 2065 deforms the second spring 2062, the deformation of the second spring 2062 can buffer the vibration, when the vibration force is large, the connecting seat 2065 continuously extrudes the second spring 2062, so that the first telescopic rod 2061 deforms, the connecting seat 2065 keeps translation, when the tooth plate 205 translates through the frame 201 and the gear 2034 transmission, the gear 2034 drives the screw rod 2031 to rotate, the screw rod 2031 drives the two nuts 2032 to move close to each other, the nut 2032 drives the third spring 2073 to move through the rectangular sleeve 2071 and the fixed plate 2072, the third spring 2073 drives the clamping block 2075 to move away from the positioning port 106, at this time the second spring 2062 can move reversely and reset, the tooth plate 205 moves away from the gear 2034, at this time the clamping block 2075 resets, and the second spring 2062 buffers with the first spring 204, until the clamping block 2075 corresponds to the positioning port 106, the third spring 2073 drives the clamping block 2075 to be clamped into the positioning port 106, at this time the second spring 2062 can buffer the vibration for the second stage, with the increase of the vibration force, the clamping block 2075 is sequentially clamped into the positioning port 106 in different positions, so that the second spring 2062 and the first spring 204 can perform the buffering work in stages, avoiding the second spring 2062 and the first spring 204 directly extruding to affect the elastic coefficient, reducing the spring force, so as to avoid the problem that the spring cannot be reset accurately.

[0048] The working principle of the present application is that when the bridge truss is in operation, the bridge truss drives the connecting column 1032 through the assembly plate 1031, drives the connecting table 1033, drives the support seat 102 through the connecting table 1033, and when the bridge truss is in operation, the arc surface of the connecting table 1033 can be moved on the arc surface of the support seat 102; when the bridge truss is in vibration, the assembly plate 1031 drives the connecting column 1032 to move, the connecting column 1032 drives the movable table 1081 to move, the support plate 1083 is driven by the movable table 1081 to move, the support plate 1083 can extrude the connecting seat 2065 to move, the connecting seat 2065 can drive the second spring 2062 to deform, so that the second spring 2062 can buffer the vibration; when the connecting seat 2065 is continuously stressed, the connecting seat 2065 continuously pushes, the tooth plate 205 moves, the tooth plate 205 passes through the through hole 208 and enters the frame 201, the tooth plate 205 is in transmission with the gear 2034, the gear 2034 drives the screw rod 2031 to rotate, the screw rod 2031 drives the two nuts 2032 to move close to each other, the nut 2032 drives the connecting block 2035 and the rectangular sleeve 2071 to move, the rectangular sleeve 2071 drives the fixed block 2063 to move, the two third springs 2073 can drive the clamping block 2075 to be separated from the positioning port 106, at this time, the second spring 2062 is elastically reset, the stroke of the second spring 2062 is restored, and at the same time, the external force is buffered through the first spring 204 and the second spring 2062; secondly, the second spring 2062 is reset to drive the tooth plate 205 to move away from the gear 2034, at this time, the clamping block 2075 contacts the bottom wall of the fixed seat 101, and is correspondingly positioned in the positioning port 106, so that the elastic force of the third spring 2073 pushes the clamping block 2075 into the positioning port 106, at this time, the first stage buffering is realized, and with the increase of the vibration force, the clamping block 2075 can enter different position positioning ports 106 in sequence, so that the stage damping operation is realized.

[0049] It is important to note that the construction and arrangement of the application shown in the various exemplary embodiments is illustrative only. Although only a few embodiments have been described in detail in this disclosure, those skilled in the art who review the present disclosure will readily appreciate that many modifications are possible (e.g., variations in sizes, dimensions, structures, shapes and proportions of the various elements, values of parameters, mounting arrangements, use of materials, colors, orientations, etc.) without materially departing from the novel teachings and advantages of the subject matter described herein. For example, elements shown as integrally formed can be constructed of multiple parts or elements, the position of elements can be reversed or otherwise varied, and the nature or number of elements or positions can be altered or varied. Thus, the foregoing description is by way of example only, and is not intended to be limiting. The application is limited only as defined in the following claims and equivalents thereto. The sequence of any process or method steps, or the order in which they are carried out, can be altered or re-ordered without departing from the scope of the application. Any "articles of manufacture" or "manufacturing" as described herein are intended to encompass structures constructed of a multitude of different physical elements or components. In the claims, any means-plus-function clause is intended to cover the structures described herein as performing the recited function and also cover structures yet to be invented which perform the recited function but operate in a different manner. Other substitutions, modifications, changes and omissions can be made in the design, operating conditions and arrangement of the exemplary embodiments without departing from the scope of the application as expressed in the appended claims.

[0050] Also, to provide a concise description of the exemplary embodiments, not all features of an actual implementation can be described (that is, not all implementations can include all of the features described or optional implementations can include only a subset of the features described).

[0051] It should be appreciated that in the development of any actual implementation, as in any engineering or design project, numerous implementation-specific decisions can be made. Such development efforts might be complex and time-consuming, but would nevertheless be a routine undertaking for those of ordinary skill in the art having the benefit of this disclosure.

[0052] It should be noted that the above-mentioned embodiments are only used to illustrate the technical solutions of the present application but not to limit the present application, and although the present application is described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present application can be modified or equivalent replaced without departing from the spirit and scope of the present application, and all should be included in the scope of the claims of the present application.

Claims

1. A long span bridge truss support, characterized by: Comprising, The truss connecting mechanism (100) comprises a fixed seat (101), a support seat (102) is arranged in the fixed seat (101), a mounting assembly (103) is slidably connected to the top of the support seat (102), the mounting assembly (103) penetrates a first guide assembly (108), the two ends of the first guide assembly (108) are slidably connected to the two side wall edges of the fixed seat (101), and the first guide assembly (108) extends downward into the fixed seat (101), four positioning openings (106) are formed in the two side walls of the fixed seat (101); The multi-section buffer mechanism (200) comprises four frames (201), the two sides of every two frames (201) are slidably connected with two second guide assemblies (202), the second guide assemblies (202) are fixedly connected in the fixed seat (101), one side of the frame (201) is fixedly connected with a first spring (204), one end of the first spring (204) away from the frame (201) is fixedly connected with the side wall of the fixed seat (101), a threaded transmission assembly (203) is assembled in the fixed seat (101), one side of the threaded transmission assembly (203) is fixedly connected with two positioning assemblies (207), the two positioning assemblies (207) are slidably connected on the frame (201), and one end of the positioning assembly (207) is inserted into the positioning opening (106), and the other side of the frame (201) is fixedly connected with a buffer assembly (206); one side of the buffer assembly (206) away from the frame (201) is fixedly connected with a toothed plate (205); The mounting assembly (103) comprises a mounting plate (1031), four mounting holes are formed in the mounting plate (1031), the bottom of the mounting plate (1031) is fixedly connected with a connecting column (1032), the bottom end of the connecting column (1032) is fixedly connected with a connecting table (1033), the connecting table (1033) is arranged above the support seat (102), and the bottom of the connecting table (1033) is provided with a first wear-resistant layer (1034); The first guide assembly (108) comprises a movable table (1081), a through opening (1082) is formed in the top of the movable table (1081), the connecting column (1032) penetrates the through opening (1082), the bottom of the movable table (1081) is fixedly connected with two support plates (1083), two through holes (208) are formed in the frame (201), two guide edges (1084) are arranged on the two sides of the movable table (1081), and the upper edges of the fixed seat (101) are embedded between the two guide edges (1084); Said buffer assembly (206) includes two first telescopic rods (2061), both ends of the first telescopic rod (2061) are fixedly connected with fixed blocks (2063), two fixed blocks (2063) are fixedly connected with a second spring (2062), the second spring (2062) is sleeved on the first telescopic rod (2061), wherein the two fixed blocks (2063) are hingedly connected with two fixed frames (2064) through pins respectively, the two fixed frames (2064) are fixedly connected on the frame (201), the other two fixed blocks (2063) are hingedly connected with a connecting base (2065) through a pin, the connecting base (2065) is fixedly connected with the toothed plate (205), the scale plate can be ensured to pass into the frame (201) through the through hole (208); Said threaded drive assembly (203) includes a screw rod (2031), the screw rod (2031) is rotatably connected on the frame (201) through two bearings (2033), the middle of the screw rod (2031) is fixedly connected with a gear (2034), the threads on the two sides of the screw rod (2031) are oppositely arranged, the screw rod (2031) is threadedly connected with two nuts (2032), one side of the nut (2032) is fixedly connected with a connecting block (2035); Said positioning assembly (207) includes a rectangular sleeve (2071), the rectangular sleeve (2071) is fixedly connected with the connecting block (2035), one side of the rectangular sleeve (2071) is fixedly connected with a fixed plate (2072), the fixed plate (2072) is fixedly connected with a second telescopic rod (2074) and a third spring (2073), one end of the second telescopic rod (2074) and the third spring (2073) is fixedly connected with a clamping block (2075), the clamping block (2075) is clamped into one of the positioning ports (106), one side of the clamping block (2075) is provided as an inclined surface.

2. A large-span bridge truss support according to claim 1, characterized in that: The top and bottom of the support base (102) are provided with second wear-resistant layers (104), the lower second wear-resistant layer (104) is compressed with a third wear-resistant layer (107), and the third wear-resistant layer (107) is arranged on the bottom wall of the fixed seat (101).

3. A large-span bridge truss support according to claim 2, characterized in that: The bottom of the connecting table (1033) is a convex arc surface, the top of the support base (102) is a concave arc surface, and the first wear-resistant layer (1034) and the upper second wear-resistant layer (104) are arranged in a tented manner.

4. A large-span bridge truss support according to claim 1, characterized in that: Both sides of the fixed seat (101) are fixedly connected with two mounting blocks (105).

5. A long span bridge truss support as claimed in claim 1, wherein: Said second guide assembly (202) includes a guide rail (2021), two sliding blocks (2022) are slidingly connected in the guide rail (2021), and the sliding blocks (2022) are fixedly connected with the frame (201).

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