Bridge expansion joint self-generating concrete guardrail connecting device

Abstract

The application belongs to the field of bridge facilities, and particularly discloses a bridge expansion joint self-generating concrete guardrail connecting device, which comprises a first connecting device plate and a second connecting device plate fixed on both sides of the expansion joint of the bridge guardrail, the first connecting device plate and the second connecting device plate have an overlapping expansion range section, a spring assembly is connected in the expansion range section, at least one end of the spring assembly is connected with a piezoelectric device, the piezoelectric device comprises a piezoelectric unit, a current stabilizing unit and an electricity storage module, one side of the piezoelectric unit is fixedly connected to the inner side of the first connecting device plate, the other side is connected with the spring assembly, and the piezoelectric unit is connected to the electricity storage module through a wire. The connecting device rationally arranges the first connecting device plate and the second connecting device plate, and sets the piezoelectric device between the two, so that the expansion kinetic energy at the expansion joint of the bridge guardrail can be converted into electric energy, the mechanical energy generated when the expansion joint deforms is fully utilized and converted into electric energy, and energy can be saved.

Description

Technical Field

[0001] This invention belongs to the field of bridge facilities, and particularly relates to a self-generating concrete guardrail connection device at bridge expansion joints. Background Technology

[0002] Most bridges currently require expansion joints to accommodate deck deformation. Bridge railings, as traffic facilities ensuring safe bridge operation, are also specially designed at these expansion joints to meet the expansion and contraction requirements. For concrete railings, the presence of expansion joints necessitates a break in the railing, making this a weak point and posing a significant safety hazard. On one hand, the railings at bridge expansion joints need safety design and must have the same protection level as the standard sections at both ends of the expansion joint; on the other hand, the railings at expansion joints must accommodate the displacement requirements of the expansion joint without affecting its normal expansion and contraction function. Therefore, existing technology proposes a design where steel plates are connected at the bridge expansion joints for protection and transition.

[0003] However, with the rapid development of modern highway and bridge construction, the number of bridge expansion joints is increasing. How to effectively utilize the protective devices installed at expansion joints to convert the deformation kinetic energy of expansion joints into electrical energy, and thus provide power for road electrical facilities, has become an urgent problem to be solved by those skilled in the art.

[0004] Therefore, this invention proposes a self-generating concrete guardrail connection device at bridge expansion joints. Summary of the Invention

[0005] To address the aforementioned technical problems, this invention proposes a self-generating concrete guardrail connection device at bridge expansion joints, aiming to solve or improve at least one of the aforementioned technical problems.

[0006] To achieve the above objectives, the present invention provides a self-generating concrete guardrail connection device at a bridge expansion joint, comprising a first connecting device plate and a second connecting device plate fixed on both sides of the expansion joint of the bridge guardrail, the first connecting device plate and the second connecting device plate having overlapping expansion range sections; a spring assembly is connected within the expansion range section, at least one end of the spring assembly is connected to a piezoelectric device; the piezoelectric device includes a piezoelectric unit, a current stabilizing unit and an energy storage module, one side of the piezoelectric unit is fixed to the inner side of the first connecting device plate, the other side is connected to the spring assembly, and the piezoelectric unit is connected to the energy storage module through a wire.

[0007] The aforementioned structure aims to provide a railing connection device that generates its own electricity using the elastic expansion and contraction motion at the bridge railing expansion joint. Compared with existing technologies, the self-generating concrete railing connection device at the bridge expansion joint of the aforementioned structure has the following technical effects and advantages: the connection device includes a self-generating piezoelectric device that can convert the kinetic energy of the expansion and contraction at the bridge railing expansion joint into electrical energy, which can be used to power road electrical facilities. This connection device makes full use of the expansion and contraction kinetic energy, converting it into electrical energy, thus saving energy.

[0008] Preferably, both the first connecting device plate and the second connecting device plate include an anchoring section and a movable section. The anchoring section has several anchoring holes for fixed connection with the bridge railing. The two movable sections are nested to form overlapping expansion and contraction range sections. The connecting device adopts a nested structure, which can adapt to the large deformation requirements of concrete bridge railings.

[0009] Preferably, the shapes of both the first connecting plate and the second connecting plate are the same as the outer contour of the bridge railing, i.e., inverted U-shape. Correspondingly, the spring assembly also adopts the same inverted U-shape as the outer contour of the bridge railing.

[0010] Preferably, a light strip is connected to the first connecting device plate and / or the second connecting device plate, and the light strip is electrically connected to the energy storage module.

[0011] Preferably, an inductive switch is connected between the light strip and the energy storage module. The inductive switch includes a light sensor. When the light sensor detects that the light intensity is lower than a preset value, the inductive switch closes and the light strip is powered on.

[0012] Preferably, the piezoelectric unit is bonded between the first connecting device plate and the spring assembly.

[0013] Preferably, a first magnet and a second magnet are respectively bonded to both sides of the inner wall of the movable section of the first connecting device plate. The opposing surfaces of the first magnet and the second magnet have opposite polarities. An elastic conductor extending between the first magnet and the second magnet is connected to the movable section of the second connecting device plate. The elastic conductor wire is connected to the energy storage module.

[0014] Preferably, the elastic conductor is a first elastic conductor disposed near the first magnet and a second elastic conductor disposed near the second magnet.

[0015] Preferably, the first elastic conductor and the second elastic conductor are both Z-shaped conductive springs. The first elastic conductor and the second elastic conductor replace the spring assembly and are connected between the first connecting device plate and the second connecting device plate. The first elastic conductor and the second elastic conductor are connected to the energy storage module in parallel or in series through wires.

[0016] In the preferred structure described above, an electromagnetic component is provided within the telescopic range of the first and second connecting plate. The Z-shaped conductive spring serves both to cut magnetic field lines and to provide elastic telescopic movement, combining the functions of both. Therefore, in the embodiment with a high-strength magnet, the spring assembly uses two independent Z-shaped conductive springs. In the embodiment without an electromagnetic component, the spring assembly only provides elastic telescopic movement. To better cooperate with the first and second connecting plates, the spring assembly adopts an inverted U-shape that matches the outer contour of the bridge railing. Attached Figure Description

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

[0018] Figure 1 This is a cross-sectional view of Embodiment 1 of the present invention;

[0019] Figure 2 for Figure 1 Top view;

[0020] Figure 3 This is an exploded view of Embodiment 1 of the present invention;

[0021] Figure 4 This is a front structural view of the first connecting device plate in Embodiment 1 of the present invention;

[0022] Figure 5 This is a front structural view of the second connecting device plate in Embodiment 1 of the present invention;

[0023] Figure 6 This is a diagram showing the positional relationship between the first connecting device plate and the second connecting device plate in Embodiment 1 of the present invention;

[0024] Figure 7 This is a diagram showing the positional relationship between the piezoelectric device and the spring assembly in Embodiment 1 of the present invention;

[0025] Figure 8 This is a front structural view of the first connecting device plate in Embodiment 2 of the present invention;

[0026] Figure 9 This is a diagram showing the positional relationship between the electromagnetic component and the first connecting device plate in Embodiment 2 of the present invention;

[0027] Figure 10 This is a diagram showing the positional relationship between the elastic conductor and the first connecting device plate in Embodiment 2 of the present invention.

[0028] In the diagram: 100, bridge railing; 200, roadway plate; 1, first connecting device plate; 101, first anchoring section; 102, first movable section; 103, first end face; 2, second connecting device plate; 201, second anchoring section; 202, second movable section; 203, second end face; 3, telescopic range section; 4, anchoring point; 5, light strip; 6, spring assembly; 601, first end pressure plate; 602, second end pressure plate; 603, spring body; 7, piezoelectric device; 8, energy storage module; 9, first magnet; 10, second magnet; 11, first elastic conductor; 12, second elastic conductor. Detailed Implementation

[0029] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0030] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0031] Example 1:

[0032] The following is combined Figures 1 to 7 This invention describes a self-generating concrete guardrail connection device at a bridge expansion joint according to Embodiment 1 of the present invention.

[0033] The bridge expansion joint self-generating concrete guardrail connection device of Embodiment 1 of the present invention includes a fixing device, a piezoelectric device 7 and a spring assembly 6.

[0034] Specifically, such as Figures 1-3As shown, the fixing device includes a first connecting device plate 1 and a second connecting device plate 2. The first connecting device plate 1 and the second connecting device plate 2 are respectively fixed on both sides of the expansion joint of the bridge railing 100. The shapes of the first connecting device plate 1 and the second connecting device plate 2 are the same as those of the bridge railing 100. The first connecting device plate 1 covers the bridge railing 100 on one side of the expansion joint and is fastened by the anchor point 4. The second connecting device plate 2 covers the bridge railing 100 on the other side of the expansion joint and is fastened by the anchor point 4. The first connecting device plate 1 and the second connecting device plate 2 partially overlap to form the expansion range segment 3. The two are nested elastically connected. Specifically, both the first connecting device plate 1 and the second connecting device plate 2 include an anchoring section and a movable section. For ease of understanding and distinction, the first connecting device plate 1 is defined as including a first anchoring section 101 and a first movable section 102, and the second connecting device plate 2 includes a second anchoring section 201 and a second movable section 202. The end of the first connecting device plate 1 closest to the second connecting device plate 2 has a first end face 103, and the end of the second connecting device plate 2 closest to the first connecting device plate 1 has a second end face 203. In use, the first anchoring section 101 and the second anchoring section 201 are respectively bolted to the anchoring positions reserved in the bridge railing 100.

[0035] like Figure 1 As shown, both the first connecting device plate 1 and the second connecting device plate 2 have an inverted U-shaped structure. Their opening width is equal to the bottom width of the bridge railing 100, both being D5, and their height is equal to the height of the bridge railing 100, both being D4. Figure 2 As shown, the length of the first anchoring segment 101 is D1, and the length of the second anchoring segment is D2. Figure 4 and Figure 5 As shown, the lengths of both the first movable segment 102 and the second movable segment 202 are D3. After the first connecting device plate 1 and the second connecting device plate 2 are connected, the length of the extension range between them is D6, as shown. Figure 6 As shown.

[0036] Specifically, such as Figure 4 and Figure 7 As shown, the piezoelectric device 7 includes a piezoelectric unit, a current stabilizing unit, and an energy storage module 8. The piezoelectric unit is specifically a PVDF piezoelectric module. One side of the piezoelectric unit is fixed to the inner side of the first connecting device plate 1, and the other side is connected to the spring assembly 6.

[0037] Specifically, such as Figure 7 As shown, the spring assembly 6 includes a spring body 603 and a first end plate 601 and a second end plate 602 connected to both ends of the spring body 603. Figure 6As shown, the first end pressure plate 601 is movably connected to the inner side of the first connecting device plate 1, that is, the side of the first anchoring section 101 facing the second connecting device plate 2, pressing and fixing the piezoelectric unit between the two. One side of the piezoelectric unit is fixed to the first connecting device plate 1, and the other side is fixed to the first end pressure plate 601. The second end pressure plate 602 is fixed to the second end face 203 of the second connecting device plate 2, that is, the side of the second movable section 202 close to the first connecting device plate 1. When the expansion joint expands and deforms, the second movable section 202 of the second connecting device plate 2 compresses / stretches the spring body 603, and the piezoelectric device 7 starts to operate, storing the generated electrical energy in the energy storage module 8. The spring body 603 is a high-strength spring, and the first end pressure plate 601 and the second end pressure plate 602 are respectively welded to both ends of the spring body 603. Figure 7 As shown, the energy storage module 8 is fixed near the piezoelectric unit and electrically connected to the piezoelectric unit for storing electrical energy output from the piezoelectric unit. The energy storage module 8 is also electrically connected to external electrical facilities.

[0038] In a further optimized embodiment, this embodiment also includes a light strip 5 (not shown in the figure) installed in the first connecting device plate 1. The light strip 5 is electrically connected to the power storage module 8, and an induction switch is installed on the connection line. The induction switch includes a light sensor, which controls the circuit to turn on / off according to the brightness of the external light. When the sunlight intensity is lower than a set threshold, for example, 0 Lux, the induction switch closes, the circuit is turned on, and the power storage module 8 supplies power to the light strip 5.

[0039] It should be understood that the first connecting device plate 1 at the location of the light strip 5 has holes or slots for light to be emitted, or holes or slots for the LED lamp heads in the light strip 5 to extend out.

[0040] In a further optimized embodiment, the piezoelectric unit and the first connecting device plate 1 are connected by adhesive bonding, and the piezoelectric unit and the first end pressure plate 601 are also connected by adhesive bonding.

[0041] Further optimization of the design: the spring assembly 6 is inverted U-shaped, with the same shape as the first connecting device plate 1.

[0042] Operating principle and effects of Embodiment 1 of the present invention:

[0043] This invention should be installed at the average temperature of the area where the bridge is located. The dimensions of the first connecting device plate 1 and the second connecting device plate 2 are determined according to the dimensions of the bridge expansion joint, and the pre-compression amount of the spring assembly 6 is determined according to the magnitude of the expansion and contraction. During installation, firstly, the light strip 5, the piezoelectric device 7, and the energy storage module 8 are connected. Then, the first end pressure plate 601 is bonded to the piezoelectric unit. The reserved anchorage position of the bridge railing 100 is ground and polished, and the bridge railing 100 on both sides of the joint is oiled. The inner walls of the first connecting device plate 1 and the second connecting device plate 2 are ground, polished, and oiled. The second end pressure plate 602 is bonded to the second end face 203 of the second connecting device plate 2. Finally, the anchorage sections of the first connecting device plate 1 and the second connecting device plate 2 are bolted to the reserved anchorage position of the bridge railing 100.

[0044] When a vehicle passes over the lane plate 200, the joint between the two lane plates 200 deforms, and the expansion joint of the bridge guardrail 100 also expands and contracts accordingly. The second movable section 202 of the second connecting device plate 2 compresses / stretches the spring body 603, and the piezoelectric device 7 starts to operate. The piezoelectric unit generates electrical energy under compression and stores it in the energy storage module 8. The energy storage module 8 controls the light strip 5 to turn on through the sensor switch according to the intensity of external light, providing road lighting and guardrail position reminders for passing vehicles.

[0045] The self-generating concrete guardrail connection device at the bridge expansion joint of the present invention adopts a nested structure. The first connecting device plate 1 and the second connecting device plate 2 are provided with expansion range sections 3, which can adapt to the large deformation requirements of the concrete guardrail. The first connecting device plate 1 and the second connecting device plate 2 are prefabricated components, with simple structure and easy installation. A piezoelectric device 7 is provided in the first connecting device plate 1, which generates electricity by utilizing the elastic expansion and contraction of the expansion range section 3, which can provide power for road electrical facilities, saving energy and protecting the environment. At the same time, the setting of the light strip 5 provides route guidance for vehicles traveling at night, making it safer.

[0046] Example 2:

[0047] The following is combined Figures 8-10 This invention describes a self-generating concrete guardrail connection device at a bridge expansion joint according to Embodiment 2 of the present invention.

[0048] The bridge expansion joint self-generating concrete guardrail connection device of Embodiment 2 of the present invention includes the basic structure of a fixing device, a piezoelectric device 7, a light strip 5, and a spring assembly 6 as in Embodiment 1, the difference being the structural differences in the first connecting device plate 1 and the spring assembly 6. Specifically, as shown in Embodiment 1... Figure 8As shown, an electromagnetic assembly is provided on the inner wall of the first movable section 102 of the first connecting device plate 1. Specifically, it consists of a first magnet 9 and a second magnet 10 fixed on both sides of the inner wall of the first connecting device plate 1. The N pole of the first magnet 9 is opposite to the S pole of the second magnet 10. The first magnet 9 and the second magnet 10 are bonded to the inner walls of both sides of the first connecting device plate 1 with structural adhesive. A magnetic induction field is formed between the two magnets. An elastic conductor is provided in the magnetic induction field as a magnetic field line cutter. The elastic conductor is connected to the energy storage module 8 through a wire. The elastic conductor, the first magnet 9, and the second magnet 10 are all located within the expansion joint area and cooperate to form the electromagnetic assembly. In this embodiment, the elastic conductor is specifically a first elastic conductor 11 located near the first magnet 9 and a second elastic conductor 12 located near the second magnet 10. Figure 10 As shown, both the first elastic conductor 11 and the second elastic conductor 12 are Z-shaped conductive springs. The two conductive springs are connected to the energy storage module 8 through parallel or series wires. When the expansion joint deforms, the first elastic conductor 11 and the second elastic conductor 12 cut the magnetic field lines to generate current. The electromagnetic component and the piezoelectric device 7 share a single energy storage module 8.

[0049] The electromagnetic component of Embodiment 2 of the present invention utilizes the linear motion of the elastic conductor relative to the magnets on both sides when the expansion joint deforms to cut the magnetic field lines, thereby generating electrical energy. Together with the piezoelectric device, it converts mechanical energy into electrical energy, achieving the purpose of energy saving and environmental protection.

[0050] All aspects not detailed in this invention are conventional technical means known to those skilled in the art.

[0051] In the description of this invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this invention, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0052] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Various modifications and improvements made by those skilled in the art to the technical solutions of the present invention without departing from the spirit of the present invention should fall within the protection scope defined by the claims of the present invention.

Claims

1. A self-generating concrete guardrail connection device at bridge expansion joints, characterized in that, The system includes a first connecting device plate (1) and a second connecting device plate (2) fixed on both sides of the expansion joint of the bridge railing (100). The first connecting device plate (1) and the second connecting device plate (2) have overlapping expansion range sections (3). A spring assembly (6) is connected within the expansion range section (3). At least one end of the spring assembly (6) is connected to a piezoelectric device (7). The piezoelectric device (7) includes a piezoelectric unit, a current stabilizing unit, and an energy storage module (8). One side of the piezoelectric unit is fixed to the inside of the first connecting device plate (1), and the other side is connected to the spring assembly (6). The piezoelectric unit is connected to the energy storage module (8) through a wire. The first connecting device plate (1) and the second connecting device plate (2) both include an anchoring section and a movable section. The anchoring section has several anchoring holes for fixing to the bridge railing (100). The two movable sections are nested to form an overlapping telescopic range section (3). A light strip (5) is connected to the first connecting device plate (1) and the second connecting device plate (2), and the light strip (5) is electrically connected to the energy storage module (8); The shapes of the first connecting device plate (1) and the second connecting device plate (2) are the same as the outer contour of the bridge railing (100); The first magnet (9) and the second magnet (10) are respectively bonded to the inner walls of the movable section of the first connecting device plate (1). The opposite polarities of the first magnet (9) and the second magnet (10) are opposite. The movable section of the second connecting device plate (2) is connected to an elastic conductor that extends between the first magnet (9) and the second magnet (10). The elastic conductor wire is connected to the energy storage module (8). The elastic conductor is a first elastic conductor (11) disposed near the first magnet (9) and a second elastic conductor (12) disposed near the second magnet (10). The first elastic conductor (11) and the second elastic conductor (12) are both Z-type conductive springs. The first elastic conductor (11) and the second elastic conductor (12) replace the spring assembly (6) and are connected between the first connecting device plate (1) and the second connecting device plate (2). The first elastic conductor (11) and the second elastic conductor (12) are connected to the energy storage module (8) through parallel or series wires. The installation is carried out at the average temperature of the area where the bridge is located, and the size of the first connecting device plate (1) and the second connecting device plate (2) is determined according to the size of the bridge expansion joint. The pre-compression amount of the spring assembly (6) is determined according to the size of the expansion and contraction. During installation, the light strip (5), piezoelectric device (7) and energy storage module (8) are connected first, and then the first end pressure plate (601) is bonded to the piezoelectric unit. The reserved anchoring position of the bridge railing (100) is polished and oiled on both sides of the joint. The inner walls of the first connecting device plate (1) and the second connecting device plate (2) are polished and oiled. The second end pressure plate (602) is bonded to the second end face (203) of the second connecting device plate (2). Finally, the anchoring sections of the first connecting device plate (1) and the second connecting device plate (2) are bolted to the reserved anchoring position of the bridge railing (100). When a vehicle passes over the lane plate (200), the joint between the two lane plates (200) deforms, and the expansion joint of the bridge railing (100) also expands and contracts. The second movable section (202) of the second connecting device plate (2) compresses / stretches the spring body (603), the piezoelectric device (7) starts to operate, the piezoelectric unit generates electrical energy under compression and stores it in the energy storage module (8). The energy storage module (8) controls the opening of the light strip (5) through the sensor switch according to the intensity of the external light, providing road lighting and guardrail position reminders for passing vehicles. The self-generating concrete guardrail connection device at the bridge expansion joint adopts a nested structure. The first connection device plate (1) and the second connection device plate (2) are provided with expansion range section (3), which can adapt to the large deformation requirements of the concrete guardrail. The first connection device plate (1) and the second connection device plate (2) are prefabricated components with simple structure and easy installation. The first connection device plate (1) is provided with a piezoelectric device (7), which generates electricity by utilizing the elastic expansion and contraction of the expansion range section (3), which can provide power for road power facilities, saving energy and protecting the environment. At the same time, the setting of the light strip (5) provides route guidance for vehicles driving at night, making it safer.

2. The self-generating concrete guardrail connection device at bridge expansion joints according to claim 1, characterized in that, An induction switch is connected between the light strip (5) and the energy storage module (8). The induction switch includes a light sensor. When the light sensor detects that the light intensity is lower than a preset value, the induction switch closes and the light strip (5) is powered on.

3. The self-generating concrete guardrail connection device at bridge expansion joints according to claim 1, characterized in that, The piezoelectric unit is bonded between the first connecting device plate (1) and the spring assembly (6).

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