A composite sheet material with pultruded profile as core and its connecting structure

Abstract

This invention relates to the technical field of railway track accessories, and discloses a composite plate and connecting structure with pultruded profile as the core. The connecting structure includes a base, baffles symmetrically fixed on both sides of the base, fastening seats symmetrically arranged at both ends of the base, fastening cavities on the fastening seats, channels within the fastening seats, elastic elements within the channels, fixing components, and supporting components. This invention uses pultruded composite profiles as the core material and composite materials as the surface layer, fully utilizing the advantages of both pultruded profiles and composite sandwich structures. This significantly improves the component's compressive, bending, shear, and peel resistance, solving the problem of low load-bearing capacity. It can replace existing wooden sleepers on railway tracks. The connecting structure effectively fixes the composite plate used as a wooden sleeper, securing the sleeper in both the railway running direction and the sleeper's extension direction, while simultaneously gathering ballast at the bottom of the sleeper for effective support.

Description

Technical Field

[0001] This invention relates to the technical field of railway track accessories, and more particularly to a composite plate and connecting structure with pultruded profiles as the core. Background Technology

[0002] Railway sleepers, also known as rail sleepers, are a type of railway component. They must support the rails, maintain their position, and transfer the immense pressure from the rails to the track bed. They must possess a certain degree of flexibility and elasticity, deforming appropriately to cushion the pressure when a train passes, but returning to their original shape as much as possible afterward. Currently, wooden sleepers used for laying rails on railway bridges suffer from declining quality and incomplete anti-corrosion treatment, leading to a gradual decrease in their performance and lifespan. Composite material load-bearing beams, as railway sleepers, offer advantages such as high strength, corrosion resistance, long service life, good gauge maintenance, flexible fastener installation, and mechanized and continuous production, giving them significant advantages over wooden sleepers and a very promising application prospect. However, existing wooden sleepers lack a more reliable rail installation method and effective fixing in the sleeper's extension direction. Even after fixing, the pressure from the rails causes the bottom ballast to crumble, resulting in a lack of effective support at the bottom of the sleeper over the years. Therefore, a composite panel with pultruded profiles as the core and a connecting structure is proposed to solve these problems. Summary of the Invention

[0003] In view of the problems existing in the composite plates and connection structures with pultruded profiles as the core, the present invention is proposed.

[0004] Therefore, the purpose of this invention is to provide a composite plate and connecting structure with pultruded profile as the core, which can effectively fix the wooden sleeper and effectively gather and fix the ballast at the bottom of the wooden sleeper, providing effective support for the wooden sleeper.

[0005] To solve the above-mentioned technical problems, the present invention provides the following technical solution: A connection structure with pultruded profile as core includes a main component, including a base, baffles symmetrically fixed on both sides of the base, fastening seats symmetrically arranged at both ends of the base, fastening cavities on the fastening seats, channels in the fastening seats, and elastic elements in the channels; a fixing component, disposed in the fastening cavity, including sliding plates symmetrically arranged in the fastening cavity, a rotating rod disposed between the sliding plates, a turntable fixed on the rotating rod, arc plates symmetrically arranged on both sides of the turntable, and a first spring disposed between the sliding plates; and a support component, disposed on the base, including sliders symmetrically arranged at both ends of the base, a second spring disposed in the sliders, a limiting rod disposed on the sliders, sliding plates symmetrically arranged on both sides of the sliders, and a limiting block disposed on the base.

[0006] As a preferred embodiment of the connection structure with pultruded profile as the core described in this invention, the baffle is disposed between the fastening seats, and the vertical cross-section of the baffle is right-angled; two channels are provided, and the channels are located between the fastening cavity and the inner wall of the fastening seat.

[0007] As a preferred embodiment of the connection structure with pultruded profile as the core described in this invention, the elastic element includes a third spring and a push plate. One end of the third spring is fixedly connected to the push plate, and the other end is fixedly connected to the inner wall of the fastening seat. The slide plate has a C-shaped cross-section and is slidably disposed in the fastening cavity. The two slide plates are disposed opposite to each other. The rotating rod is rotatably disposed on the fastening seat and is also provided with a handle. The turntable is fixedly disposed on the rod of the rotating rod and is elliptical in shape. The turntable has two connection points.

[0008] As a preferred embodiment of the connection structure with pultruded profile as the core described in this invention, the arc plate has an arc-shaped cross-section, one end of the arc plate is rotatably connected to the slide plate, and the other end is rotatably connected to the connection point away from the slide plate. Two first springs are provided, symmetrically arranged on both sides of the rotating rod. The first springs connect the two slide plates, and the first springs are in a compressed state in their natural state.

[0009] As a preferred embodiment of the connection structure with pultruded profile as the core described in this invention, the following features: the base surface is provided with the limiting block, the limiting block has a triangular cross-section, the bottom of the slider is provided with a triangular groove, and the limiting block can be embedded in the triangular groove; the slider is symmetrically provided with slide bars on both sides, and the limiting rod is fixedly provided on the slide bar, with the limiting rod on each side being inclined.

[0010] As a preferred embodiment of the connection structure with pultruded profile as the core described in this invention, the slider is further provided with a spring cavity, the second spring is disposed in the spring cavity, one end of the second spring is fixedly connected to the base, and the other end is fixedly connected to the inner wall of the spring cavity.

[0011] As a preferred embodiment of the connection structure with pultruded profile as the core described in this invention, the sliding plate is disposed between the two sliders, and a groove is also provided on the sliding plate, with the slider's slide bar inserted into the groove.

[0012] As a preferred embodiment of the connection structure with pultruded profile as the core described in this invention, the top and bottom of the slide groove are further provided with inclined grooves, and the limiting rod is inserted into the inclined groove.

[0013] As a preferred embodiment of the connection structure with pultruded profile as the core described in this invention, a cover plate is further provided on the sliding plate.

[0014] A composite panel with pultruded profiles as the core includes a connecting structure with pultruded profiles as the core, and further includes pultruded cores and fiber cloth covering the pultruded cores. The pultruded cores are arranged and stacked in a linear manner. The gaps between the pultruded cores are filled with a resin-based curing material. The pultruded cores are filled with concrete. The fiber cloth is wrapped around the pultruded cores in multiple layers.

[0015] The beneficial effects of this invention are:

[0016] The composite plate of this invention, with pultruded profiles as the core and composite materials as the face and web, fully utilizes the advantages of both pultruded profiles and composite sandwich structures. This significantly improves the component's compressive, bending, shear, and peel resistance, solving the problems of low load-bearing capacity and interface peeling. It can replace the existing wooden sleepers on railway tracks. The connecting structure can effectively fix the composite plate, which serves as a wooden sleeper, in both the direction of railway running and the direction of sleeper extension. At the same time, it gathers ballast at the bottom of the sleeper, providing effective support. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Wherein:

[0018] Figure 1 This is a schematic diagram of the overall structure of a connection structure with a pultruded profile as the core according to the present invention.

[0019] Figure 2 This is a schematic diagram of the overall structure of the present invention, which uses a pultruded profile as the core and eliminates the need for sleepers.

[0020] Figure 3 This is a schematic diagram of an overall fixing component structure of a connection structure using pultruded profiles as the core, according to the present invention.

[0021] Figure 4 This is a schematic diagram of a single fixing component structure of a connection structure using pultruded profiles as the core, according to the present invention.

[0022] Figure 5 This is a schematic diagram of a rotating rod structure of a connection structure using pultruded profiles as the core, according to the present invention.

[0023] Figure 6 This is a schematic diagram of the fastening cavity structure of a connection structure using pultruded profiles as the core, according to the present invention.

[0024] Figure 7 This is a schematic diagram of the internal structure of a skateboard with a pultruded profile as the core, according to the present invention.

[0025] Figure 8 This is a schematic diagram of an arc plate structure with a pultruded profile as the core, according to the present invention.

[0026] Figure 9 This is a schematic diagram of a support component structure of a connection structure using pultruded profiles as the core, according to the present invention.

[0027] Figure 10 This is a schematic diagram of a single support component structure of a connection structure using pultruded profiles as the core, according to the present invention.

[0028] Figure 11 This is a bottom view of a support component structure of a connection structure using pultruded profiles as the core, according to the present invention.

[0029] Figure 12 This is a schematic diagram of the second spring structure of a connection structure with a pultruded profile as the core, according to the present invention.

[0030] Figure 13 This is a schematic diagram of a sliding plate structure with a pultruded profile as the core, according to the present invention.

[0031] Figure label:

[0032] 100. Main component; 101. Base; 102. Baffle; 103. Fastening seat; 104. Fastening cavity; 105. Channel; 106. Elastic element; 106a. Third spring; 106b. Push plate;

[0033] 200. Fixed component; 201. Slide plate; 202. Rotating rod; 202a. Handle; 203. Turntable; 203a. Connection point; 204. Arc plate; 205. First spring;

[0034] 300, Support assembly; 301, Slider; 301a, Triangular groove; 301b, Sliding bar; 301c, Spring cavity; 302, Second spring; 303, Limiting rod; 304, Sliding plate; 304a, Slide groove; 304b, Angled groove; 305, Limiting block; 306, Cover plate. Detailed Implementation

[0035] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0036] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.

[0037] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that is mutually exclusive with other embodiments.

[0038] Secondly, the present invention is described in detail with reference to the schematic diagrams. When detailing the embodiments of the present invention, for ease of explanation, the cross-sectional views illustrating the device structure may be partially enlarged, not according to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of the present invention. In addition, actual fabrication should include three-dimensional spatial dimensions of length, width, and depth.

[0039] Example 1

[0040] Reference Figures 1 to 13 This is the first embodiment of the present invention, providing a connection structure with a pultruded profile as the core. This connection structure includes a main component 100, a fixing component 200, and a support component 300. The main component 100 includes a base 101, baffles 102 symmetrically fixed on both sides of the base 101, fastening seats 103 symmetrically arranged at both ends of the base 101, fastening cavities 104 disposed on the fastening seats 103, a channel 105 disposed within the fastening seats 103, and elastic members 106 disposed within the channel 105. The fixing component 200 is disposed within the fastening cavity 104, including components symmetrically arranged on the fastening... The cavity 104 includes a slide plate 201, a rotating rod 202 disposed between the slide plates 201, a turntable 203 fixedly disposed on the rotating rod 202, an arc plate 204 symmetrically disposed on both sides of the turntable 203, and a first spring 205 disposed between the slide plates 201; and a support assembly 300 disposed on the base 101, including a slider 301 symmetrically disposed at both ends of the base 101, a second spring 302 disposed within the slider 301, a limiting rod 303 disposed on the slider 301, a sliding plate 304 symmetrically disposed on both sides of the slider 301, and a limiting block 305 disposed on the base 101.

[0041] Among them, baffle 102 is disposed between fastening seats 103, and the vertical cross section of baffle 102 is right angled; two channels 105 are provided, and the channels 105 are located between the fastening cavity 104 and the inner wall of the fastening seat 103. The elastic element 106 includes a third spring 106a and a push plate 106b. One end of the third spring 106a is fixedly connected to the push plate 106b, and the other end is fixedly connected to the inner wall of the fastening seat 103; the slide plate 201 has a C-shaped cross section and is slidably disposed in the fastening cavity 104. The two slide plates 201 are disposed opposite to each other. The rotating rod 202 is rotatably disposed on the fastening seat 103. The rotating rod 202 is also provided with a handle 202a. The turntable 203 is fixedly disposed on the rod of the rotating rod 202. The turntable 203 is elliptical and has two connection points 203a. The arc plate 204 has an arc-shaped cross-section. One end of the arc plate 204 is rotatably connected to the slide plate 201, and the other end is rotatably connected to the connection point 203a away from the slide plate 201. There are two first springs 205. The first springs 205 are symmetrically arranged on both sides of the rotating rod 202. The first springs 205 connect the two slide plates 201. The first springs 205 are in a compressed state in their natural state.

[0042] To effectively fix and limit the wooden pillow, the above-mentioned method involves first fixing the base 101 to the ground, then inserting the wooden pillow into the channel 105 on the base 101. Preferably, a connecting structure has two channels 105, allowing for the simultaneous fixing of two wooden pillows. Before inserting the wooden pillow into the channel 105, the sliding plate 201 needs to be adjusted so that it retracts into the fastening cavity 104, increasing the volume of the channel 105. Adjusting the sliding plate 201 simply requires turning the handle 202a. The rotation of the handle 202a causes the rotating rod 202 to rotate. An arc plate 204 connects the rotating rod 202 and the sliding plate 201. When the rotating rod 202 rotates, it causes the turntable 203 on the rotating rod 202 to rotate. Two... Connection point 203a also rotates synchronously, pulling the arc plate 204. The direction of rotation of the rotating rod 202 is the direction of tightening the two slide plates 201. Tightening the slide plates 201 means that the slide plates 201 retract into the fastening cavity 104, while squeezing the first spring 205 between the slide plates 201. At this time, the channel 105 opens, and the sleeper can be inserted. An elastic element 106 is also provided in the channel 105 to cope with the length error of the sleeper. After both ends of the sleeper are placed into the channel 105, the handle 202a is released, and the first spring 205 rebounds by the restoring force, opening the two slide plates 201. When the slide plates 201 are opened, the arc plate 204 can be reset to the initial position. At the same time, the slide plates 201 clamp and fix the sleeper in the channel 105.

[0043] To effectively support the ballast stones gathered at the bottom of the sleepers, a limiting block 305 is provided on the surface of the base 101. The limiting block 305 has a triangular cross-section, and a triangular groove 301a is provided at the bottom of the slider 301, into which the limiting block 305 can be embedded. Sliding strips 301b are symmetrically arranged on both sides of the slider 301, and limiting rods 303 are fixedly mounted on the sliding strips 301b, with each limiting rod 303 inclined. A spring cavity 301c is also provided in the slider 301, and a second spring 302 is disposed within the spring cavity 301c. One end of the second spring 302 is fixedly connected to the base 101, and the other end is fixedly connected to the inner wall of the spring cavity 301c. A sliding plate 304 is disposed between the two sliders 301, and a sliding groove 304a is provided on the sliding plate 304, into which the sliding strips 301b on the slider 301 are inserted. The top and bottom of the slide 304a are also provided with inclined grooves 304b, and the limiting rod 303 is inserted into the inclined groove 304b. The sliding plate 304 is also provided with a cover plate 306.

[0044] According to the above scheme, ballast should be laid at the bottom of the sleeper insertion channel 105. When pouring the ballast, the slider 301 should be manually pushed against the second spring 302 to compress the second spring 302. Since a limit rod 303 is provided on the side slide bar 301b of the slider 301, and the limit rod 303 is inclined, the limit rod 303 moves synchronously when the slider 301 moves. At this time, the path of the limit rod 303 makes the inclined groove 304... The slider 304b retracts towards the center of the slider 301, causing the sliding plate 304 to retract as well. This increases the distance between the sliding plate 304 and the baffle 102, allowing more ballast to be poured in. After the ballast is laid, the slider 301 is released, the second spring 302 returns to its original position, and the slider 301 is pushed forward. The limiting rod 303 moves synchronously, causing the inclined groove 304b to move away from the center of the slider 301, meaning the sliding plate 304 expands outwards. At this point, the sliding plate 304 can... The wooden sleeper is secured a second time, and the ballast between the sliding plate 304 and the baffle 102 is gathered and concentrated at the bottom of the sleeper, providing effective support. After the rail is laid on the sleeper, the train passes and compresses the sleeper. The sleeper compresses the ballast at the bottom, which tends to spread out. At this time, the side wall of the sliding plate 304 can effectively block this, and the force applied to the sliding plate 304 is blocked by the slider 301. A triangular groove 301a is also provided at the bottom of the slider 301, and a limiting block 305 is provided on the base 101. The limiting block 305 can prevent the slider 301 from being pushed unrestricted by the second spring 302. In summary, the wooden sleeper is initially clamped by the sliding plate 201 in the channel 105. The side wall of the sliding plate 304 can clamp the wooden sleeper a second time and gather the ballast at the bottom of the sleeper, forming reliable support for the sleeper and preventing insufficient support of the ballast at the bottom after long-term compression. A dual-fixing mechanism enhances stability. The sliding plate 304 expands outwards via the second spring 302, both fixing the wooden sleepers and gathering the ballast, forming an adaptive support, particularly suitable for fine-tuning needs under dynamic train loads. Synchronous contraction and expansion of the sliding plate 304 are achieved through mechanical linkage, ensuring precise ballast concentration in the critical pressure-bearing area at the bottom of the sleepers. The sidewalls of the sliding plate 304 rigidly prevent lateral displacement of the ballast, significantly reducing maintenance frequency. Ballast laying and compaction on the base 101 can be completed without complex tools, making it suitable for field operations.

[0045] A composite panel with pultruded profiles as the core includes pultruded cores and fiber cloth covering the pultruded cores. The pultruded cores are arranged and stacked linearly, and the gaps between the pultruded cores are filled with a resin-cured material. The pultruded cores are filled with concrete, and the fiber cloth is wrapped around the pultruded cores in multiple layers. This composite panel with pultruded profiles as the core material and composite materials as the surface layer and web fully utilizes the advantages of both pultruded profiles and composite sandwich structures. This significantly improves the compressive, bending, shear, and peel strength of the component, solving the problems of low load-bearing capacity and interface peeling. It can replace the wooden sleepers on existing railway tracks.

[0046] It is important to note that the constructions and arrangements of this application shown in several different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, those who consult this disclosure will readily understand that many modifications are possible (e.g., the size, dimensions, structure, shape, and proportions of various elements), and parameter values ​​(e.g., temperature, pressure, etc., installation arrangements, use of materials, color, orientation, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in this application. For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of elements may be inverted or otherwise changed, and the nature or number or position of discrete elements may be altered or changed. Therefore, all such modifications are intended to be included within the scope of the invention. The order or sequence of any process or method steps may be changed or rearranged according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure described herein that performs the function, and not only structurally equivalent but also equivalent in structure. Other substitutions, modifications, alterations, and omissions may be made in the design, operation, and arrangement of the exemplary embodiments without departing from the scope of the invention. Therefore, the present invention is not limited to the specific embodiments, but extends to various modifications that still fall within the scope of the appended claims.

[0047] Furthermore, in order to provide a concise description of exemplary embodiments, not all features of actual embodiments (i.e., those features that are not relevant to the currently considered best mode for carrying out the invention, or those features that are not relevant to implementing the invention) may be omitted.

[0048] It should be understood that numerous specific implementation decisions can be made during the development of any practical implementation, such as in any engineering or design project. Such development efforts may be complex and time-consuming, but for those skilled in the art who benefit from this disclosure, the development effort will be a routine work of design, manufacturing, and production without requiring much experimentation.

[0049] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A connection structure using pultruded profiles as a core, characterized in that, include: The main body component (100) includes a base (101), baffles (102) symmetrically fixed on both sides of the base (101), fastening seats (103) symmetrically arranged at both ends of the base (101), fastening cavities (104) arranged on the fastening seats (103), channels (105) arranged in the fastening seats (103), and elastic elements (106) arranged in the channels (105). The fixing assembly (200) is disposed in the fastening cavity (104) and includes a sliding plate (201) symmetrically disposed in the fastening cavity (104), a rotating rod (202) disposed between the sliding plates (201), a turntable (203) fixedly disposed on the rotating rod (202), an arc plate (204) symmetrically disposed on both sides of the turntable (203), and a first spring (205) disposed between the sliding plates (201). A support assembly (300) is disposed on a base (101) and includes sliders (301) symmetrically disposed at both ends of the base (101), a second spring (302) disposed within the sliders (301), a limiting rod (303) disposed on the sliders (301), sliding plates (304) symmetrically disposed on both sides of the sliders (301), and a limiting block (305) disposed on the base (101); The base (101) has a limiting block (305) on its surface. The limiting block (305) has a triangular cross-section. The bottom of the slider (301) has a triangular groove (301a) into which the limiting block (305) can be inserted. Slide bars (301b) are symmetrically arranged on both sides of the slider (301). The limiting rod (303) is fixedly arranged on the slide bar (301b). The limiting rod (303) on each side is inclined. The slider (301) also has a spring cavity (301c). The second spring ( 302) is set in the spring cavity (301c). One end of the second spring (302) is fixedly connected to the base (101), and the other end is fixedly connected to the inner wall of the spring cavity (301c). The sliding plate (304) is set between the two sliders (301). The sliding plate (304) is also provided with a sliding groove (304a). The slider (301) has a sliding strip (301b) inserted into the sliding groove (304a). The top and bottom of the sliding groove (304a) are also provided with inclined grooves (304b). The limiting rod (303) is inserted into the inclined groove (304b).

2. The connection structure with pultruded profile as the core as described in claim 1, characterized in that: The baffle (102) is disposed between the fastening base (103), and the vertical cross section of the baffle (102) is right-angled; two channels (105) are provided, and the channels (105) are located between the fastening cavity (104) and the inner wall of the fastening base (103).

3. The connection structure with pultruded profile as the core as described in claim 2, characterized in that: The elastic element (106) includes a third spring (106a) and a push plate (106b). One end of the third spring (106a) is fixedly connected to the push plate (106b), and the other end is fixedly connected to the inner wall of the fastening seat (103). The slide plate (201) has a C-shaped cross-section and is slidably disposed in the fastening cavity (104). The two slide plates (201) are disposed opposite to each other. The rotating rod (202) is rotatably disposed on the fastening seat (103). The rotating rod (202) is also provided with a handle (202a). The turntable (203) is fixedly disposed on the rod of the rotating rod (202). The turntable (203) is elliptical and has two connection points (203a).

4. The connection structure with pultruded profile as the core as described in claim 3, characterized in that: The arc plate (204) has an arc-shaped cross-section. One end of the arc plate (204) is rotatably connected to the slide plate (201), and the other end is rotatably connected to the connection point (203a) away from the slide plate (201). There are two first springs (205). The first springs (205) are symmetrically arranged on both sides of the rotating rod (202). The first springs (205) connect the two slide plates (201). The first springs (205) are in a compressed state in their natural state.

5. The connection structure with pultruded profile as the core as described in claim 1, characterized in that: The sliding plate (304) is also provided with a cover plate (306).

6. A composite sheet material with a pultruded profile as the core, comprising the connecting structure with a pultruded profile as the core as described in any one of claims 1-5, characterized in that: The pultruded tube includes a pultruded core and a fiber cloth covering the pultruded core. The pultruded cores are arranged and stacked in a linear manner. The gaps between the pultruded core assemblies are filled with a resin-based curing material. The pultruded core is filled with concrete. The fiber cloth is wrapped around the pultruded core in multiple layers.

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