Bridge expansion joint sealing device with cleaning function

Abstract

A bridge expansion joint sealing device with a cleaning function relates to the technical field of expansion joints and is mounted between two adjacent I-shaped middle beams of a bridge expansion joint. The device comprises two sealing strips which are connected with a middle beam through clamping grooves, and arc-shaped shielding parts are arranged on the opposite sides of the sealing strips; the two elastic telescopic supporting assemblies are mounted at the two ends of the sealing strip; the split sealing assembly is mounted below the elastic telescopic supporting assembly, closes the gap when closed and dumps garbage when opened; the flexible tray is used for bearing garbage and can be rolled and drawn out during cleaning; double sealing is achieved through the arc-shaped shielding part and the split sealing assembly, and rainwater and sundries are effectively blocked; the elastic telescopic supporting assembly adapts to bridge displacement changes, and the sealing effect is ensured; the batten design enhances the structural strength and prolongs the service life; the device is simple in structure, the waterproof performance is remarkably improved, and the device is suitable for sealing and cleaning bridge expansion joints.

Description

Technical Field

[0001] The present invention relates to the technical field of expansion joints, and particularly to a bridge expansion joint sealing device with a cleaning function. Background Art

[0002] As an important part of the bridge structure, the bridge expansion joint device undertakes key functions such as releasing temperature stress, adapting to the deformation of the beam body, and sealing and waterproofing. However, at present, the widely used bridge expansion joint sealing strips at home and abroad mainly adopt the structural form of a combination of rubber materials (such as neoprene rubber, ethylene propylene diene monomer rubber) and metal parts. Such traditional devices have shown significant technical defects in practical engineering applications and are difficult to meet the usage requirements of modern bridges.

[0003] Firstly, the weather resistance of traditional rubber sealing strips is insufficient and difficult to meet the requirements of the full life cycle of the bridge. When the rubber material is exposed to environmental conditions such as ultraviolet rays, ozone, and temperature changes for a long time, it is prone to aging, cracking, and deformation, resulting in a decline in the sealing performance. Secondly, most of the existing sealing structures adopt a one-way lip design and are of an integral structure. This design cannot meet the multi-directional deformation requirements of the bridge under complex working conditions. When the bridge undergoes displacement due to thermal expansion and contraction or vehicle load, the one-way lip design is likely to lead to a decrease in the adhesion between the sealing strip and the middle beam, resulting in problems such as rainwater intrusion and debris accumulation. These problems will not only cause corrosion and damage to the bridge structure but also may affect the deformation function and service life of the bridge expansion device itself.

[0004] In addition, the highway bridge maintenance specification in China requires that the expansion joint be manually cleaned at least once every quarter, but the actual implementation rate is less than 40%. Traditional rubber sealing strips are extremely easy to be blocked in actual engineering use. Once blocked, it will not only further reduce the sealing performance but also have a negative impact on the normal function of the bridge expansion device. More seriously, the traditional sealing device is prone to looseness or detachment under the vibration or external force of the bridge, resulting in the complete failure of the sealing performance and being unable to effectively protect the bridge expansion joint.

[0005] When cleaning the accumulated garbage and debris inside the existing device, the operation is complex and inefficient, usually requiring frequent disassembly and reinstallation. This not only increases the maintenance cost and workload but also may cause further damage to the device due to improper disassembly and installation. The above defects indicate that the existing bridge expansion joint sealing device has significant deficiencies in terms of sealing performance, structural stability, and maintenance convenience, and urgent technical innovation is needed to solve these problems. Summary of the Invention

[0006] In order to overcome the deficiencies in the background art, the present invention discloses a bridge expansion joint sealing device with a cleaning function, aiming to solve the problems of poor sealing effect and difficulty in cleaning of the existing integral bridge expansion joint sealing device.

[0007] To achieve the above-mentioned invention object, the present invention adopts the following technical solutions: A bridge expansion joint sealing device with a cleaning function is installed between two adjacent central beams of a bridge expansion joint. The central beam has an I-shaped structure, and a clamping groove is provided at a position near the top inside the central beam; it includes: Two sealing strips, which are respectively clamped corresponding to the clamping grooves of the two central beams; an arc-shaped shielding part is provided on one side where the two sealing strips face each other.

[0008] Two elastic telescopic support components are respectively arranged at both ends of the sealing strip; A split-type sealing component is installed below the elastic telescopic support component, and the shielding part of the sealing strip overlaps above the split-type sealing component; when the split-type sealing component is closed, it can seal the gap between the two central beams, and when it is opened, it can pour out the accumulated garbage inside; A flexible tray is placed below the split-type sealing component for carrying garbage; and when cleaning the garbage, the part of the flexible tray drawn out between the two central beams can be curled into a roll.

[0009] Preferably, the elastic telescopic support component includes: A support rod with counterbores at both ends; Two end heads are respectively inserted corresponding to both ends of the support rod; A spring is arranged between the end head and the bottom of the counterbore of the support rod for pushing the end head.

[0010] Preferably, the elastic telescopic support component further includes a pressing strip. One side of the pressing strip corresponding to the end head has a convex-shaped structure, and the other side has a columnar structure, and a necking part is provided between the columnar structure and the convex-shaped structure; the end head is provided with a bayonet corresponding to the convex-shaped structure of the pressing strip for clamping; a slot is provided on one side of the sealing strip corresponding to the columnar structure of the pressing strip; when the columnar structure of the pressing strip extends into the slot of the sealing strip, the thickness of the sealing strip can be increased.

[0011] Preferably, the split-type sealing component includes two arc-shaped sealing plates with a symmetrical structure. One side of the arc-shaped sealing plate is curled into a ring structure, and this side of the arc-shaped sealing plate is correspondingly hinged to the elastic telescopic support component through a bracket; a bending part is provided on the other side edge of the arc-shaped sealing plate, and when the bending parts of the two arc-shaped sealing plates are correspondingly attached, sealing is achieved.

[0012] Preferably, a sealing strip is installed on the bending part of the arc-shaped sealing plate.

[0013] Preferably, a control mechanism for controlling the opening and closing of the split-type sealing component is further installed on the elastic telescopic support component. The control mechanism includes: Two spring telescopic rods, one end of each of the two spring telescopic rods is correspondingly hinged to the bottom of the elastic telescopic support assembly, and the other end of each of the two spring telescopic rods is correspondingly hinged to one of the two arc-shaped sealing plates; when the two arc-shaped sealing plates are not subject to other external forces, the two spring telescopic rods automatically extend to control the opening of the two arc-shaped sealing plates; A retracting device, installed on the elastic telescopic support assembly; Two steel wire ropes, one end of each of the two steel wire ropes is fixedly connected to one of the two arc-shaped sealing plates correspondingly, and the other end of each of the two steel wire ropes is wound around the retracting device correspondingly; the retracting device controls the closing of the two arc-shaped sealing plates by synchronously retracting the two steel wire ropes.

[0014] Preferably, the retracting device includes: A fixed seat, fixedly connected to the elastic telescopic support assembly; A ratchet wheel, rotatably connected to the fixed seat; A ratchet pawl, arranged on one side of the ratchet wheel; the ratchet pawl is correspondingly hinged to the fixed seat, and a torsion spring for driving the ratchet pawl to lock the ratchet wheel is arranged at the position where the ratchet pawl is correspondingly hinged to the fixed seat; A grooved pulley, coaxially and fixedly connected to the ratchet wheel, for winding the steel wire rope.

[0015] Preferably, both the ratchet wheel and the ratchet pawl are provided with hexagonal prisms protruding from the fixed seat.

[0016] Preferably, the elastic telescopic support assembly is of a hollow structure, the fixed seat is installed inside the cavity of the elastic telescopic support assembly; the grooved pulley is located at the bottom of the elastic telescopic support assembly; the steel wire rope bypasses the top end of the spring telescopic rod and is wound around the grooved pulley correspondingly.

[0017] Preferably, a convex platform for supporting the flexible tray is provided inside the middle beam.

[0018] Due to the adoption of the above technical solutions, the present invention has the following beneficial effects: The structure of the present invention is simple. The present invention initially blocks external sundries through the arc-shaped shielding part of the sealing strip, combined with the double-sealing design of the split-type sealing assembly and the sealing belt), effectively preventing rainwater and sundries from entering the inside of the bridge expansion joint. Even when the bridge has a large displacement due to thermal expansion and contraction, the sealing effect can be ensured not to be affected, significantly improving the waterproof performance of the device.

[0019] The elastic telescopic support assembly of the present invention adopts a combined design of a support rod, a top head and a spring, which can adaptively shorten or extend when the bridge expands and contracts thermally, automatically compensating for the change in the distance between the two middle beams. This design not only ensures the stability of the device but also extends the service life of the device.

[0020] The pressing strip of the elastic telescopic support component of the present invention adopts a combined design of a convex-shaped structure and a columnar structure, significantly enhancing the structural strength and preventing it from bending or deforming under stress. At the same time, the locking design between the pressing strip and the sealing strip further enhances the overall stability of the device, ensuring that the sealing strip fits tightly with the middle beam.

[0021] The design of the flexible tray of the present invention enables the internal garbage to automatically fall into the flexible tray when the split-type sealing component is opened, facilitating centralized cleaning. The wavy structure and curling design of the flexible tray enable it to quickly restore the sealed state after cleaning, while avoiding interference with other objects after being pulled out, significantly improving the efficiency of cleaning and maintenance.

[0022] Through the combined design of a spring telescopic rod, a retracting device, and a steel wire rope, the present invention realizes the stable closing and rapid opening of the split-type sealing component. The self-locking function of the retracting device effectively prevents the split-type sealing component from accidentally opening due to external vibration or impact, ensuring the reliability of the device during long-term use. At the same time, the instant release design of the spring telescopic rod can shake off the accumulated garbage and dust inside, further improving the cleaning effect.

[0023] The components of the present invention adopt a modular design, facilitating installation and maintenance. For example, the combined installation method of the sealing strip and the pressing strip simplifies the construction process, and the hollow structure design of the retracting device effectively protects the internal mechanical components, preventing jamming caused by foreign object intrusion and ensuring the long-term stable operation of the device. Description of the Drawings

[0024] Figure 1 is a structural schematic diagram of the present invention; Figure 2 is a structural schematic diagram of the sealing strip; Figure 3 is a structural schematic diagram of the elastic telescopic support component; Figure 4 is a structural schematic diagram of the flexible tray; Figure 5 is a structural schematic diagram of the split-type sealing component; Figure 6 is a structural schematic diagram of the retracting device; Figure 7 is a three-dimensional structural schematic diagram of the present invention.

[0025] In the figure: 1, middle beam; 2, sealing strip; 3, elastic telescopic support component; 3-1, support rod; 3-2, top head; 3-3, spring; 3-4, pressing strip; 4, split-type sealing component; 4-1, arc-shaped sealing plate; 4-2, sealing belt; 5, flexible tray; 6, spring telescopic rod; 7, retracting device; 7-1, fixed seat; 7-2, ratchet wheel; 7-3, ratchet pawl; 7-4, grooved pulley; 8, steel wire rope. Detailed Embodiments

[0026] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0027] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", etc. is based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship when the product of the present invention is normally placed. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0028] In this application, unless otherwise clearly specified and defined, the terms "installation", "connection", "connection", "fixation", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be directly connected, or indirectly connected through an intermediate medium, and can be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0029] Embodiment 1: Combined with the attached Figures 1 to 4 As shown in FIGS. 6 and 7, the present invention provides a bridge expansion joint sealing device with a cleaning function, aiming to solve the problems of corrosion and damage caused by rainwater intrusion and debris accumulation in the bridge expansion joint during long-term use. The device is installed between two adjacent central beams 1 of the bridge expansion joint, and realizes the functions of sealing, support and cleaning through a multi-layer structure design, while adapting to the displacement changes of the bridge caused by thermal expansion and contraction.

[0030] The central beam 1 is designed with an I-shaped structure, and a clamping groove is provided at a position near the top of its inner side. This design not only provides a stable installation foundation for the sealing device, but also ensures the stability of the device under the vibration or external force of the bridge. If the bridge expansion joint includes multiple central beams 1, the sealing devices of this embodiment are installed between adjacent two central beams 1, so as to realize the comprehensive protection of the entire expansion joint.

[0031] The sealing device of this embodiment is composed of four main parts: a sealing strip 2, an elastic telescopic support assembly 3, a split sealing assembly 4 and a flexible tray 5. Among them, there are two sealing strips 2, which are respectively clamped corresponding to the clamping grooves of the two central beams 1. An arc-shaped shielding part is provided on the opposite side of the sealing strip 2, as shown in the attached Figure 2As shown, its main function is to initially block foreign objects from entering the expansion joint, thereby reducing the burden of subsequent cleaning work.

[0032] Elastic telescopic support components 3 are installed at both ends of the sealing strip 2. The main function of the elastic telescopic support component 3 is to tightly hold the sealing strip 2 to prevent it from falling off due to bridge vibration or external forces. At the same time, the elastic telescopic support component 3 serves as the installation basis for other components and can adaptively shorten or elongate during the thermal expansion and contraction of the bridge, thereby automatically compensating for the change in the distance between the two middle beams 1 to ensure the stability and sealing performance of the device.

[0033] Specifically, as shown in the appendix Figure 3 As shown, the elastic telescopic support component 3 consists of a support rod 3-1, a head 3-2, and a spring 3-3. The two ends of the support rod 3-1 are provided with counterbores, the head 3-2 is movably inserted into the counterbores, and is connected to the bottom of the counterbore through the spring 3-3. When the distance between the two middle beams 1 increases, the spring 3-3 pushes the head 3-2 to extend out of the counterbore; when the distance between the middle beams decreases, the head 3-2 retracts into the counterbore, compressing the spring 3-3, thereby achieving adaptive adjustment. This design not only ensures the stability of the device during the telescopic process of the bridge but also extends the service life of the device.

[0034] To further enhance the structural strength of the device, the elastic telescopic support component 3 further includes a pressing strip 3-4. One side of the pressing strip 3-4 corresponding to the head 3-2 has a convex structure, and the other side is a columnar structure, and there is a necking part between the columnar structure and the convex structure. This structural design can effectively improve the bending resistance of the pressing strip 3-4 and prevent it from deforming when stressed. The head 3-2 is provided with a bayonet corresponding to the convex structure of the pressing strip 3-4 for locking the position of the pressing strip 3-4. One side of the sealing strip 2 corresponding to the columnar structure of the pressing strip 3-4 is provided with a slot. When the columnar structure of the pressing strip 3-4 is inserted into the slot of the sealing strip 2, the sealing strip 2 thickens due to local expansion, thereby firmly fixing it in the slot of the middle beam 1 and ensuring the stability of the pressing strip 3-4 at the same time.

[0035] When installing the pressing strip 3-4, the sealing strip 2 can be first placed in the slot of the middle beam 1, and then the pressing strip 3-4 is pressed so that its columnar structure is embedded in the slot of the sealing strip 2. This process not only makes the sealing strip 2 closely fit with the middle beam 1 but also further enhances the overall stability of the device through the locking effect of the pressing strip 3-4.

[0036] The split-type sealing component 4 is installed below the elastic telescopic support component 3, and the shielding part of the sealing strip 2 overlaps above the split-type sealing component 4. Since there is only an overlapping contact between the sealing strip 2 and the split-type sealing component 4, when the middle beam 1 moves due to thermal expansion and contraction, it will not interfere with the split-type sealing component 4, thus ensuring that its sealing performance is not affected. When the split-type sealing component 4 is closed, it can completely seal the gap between the two middle beams 1 to prevent rainwater from invading and causing corrosion of the middle beam 1; when it is opened, it can dump the accumulated garbage inside, which is convenient for cleaning and maintenance. To achieve the stability of the closed state, the split-type sealing component 4 can be fixed by magnetic attraction or snap fastening, and remain in the closed state during daily use to effectively block external rainwater and sundries from entering the expansion joint.

[0037] The flexible tray 5 is placed below the split-type sealing component 4, mainly used to collect the garbage dumped when the split-type sealing component 4 is opened. At the same time, the rainwater leaking along the split-type sealing component 4 can be discharged through the flexible tray 5, further improving the overall sealing performance. When cleaning the garbage, the operator can open the split-type sealing component 4, and the garbage inside will automatically fall into the flexible tray 5. Since the flexible tray 5 is as long as the middle beam 1, usually with a length greater than 5 meters, for the convenience of cleaning, the part of the flexible tray 5 drawn out between the two middle beams 1 can be curled into a roll. The operator can draw out the flexible tray 5 from the reserved opening at one end of the bridge expansion joint and gradually roll up the flexible tray 5 while cleaning the garbage to avoid interference with other objects after being drawn out.

[0038] It should be noted that the flexible tray 5 has a wavy structure, as shown in the appendix Figure 4 shown, with good flexibility. After cleaning the garbage, the flexible tray 5 can be reinserted between the two middle beams 1, and it will automatically unfold into a flat state after being unrolled, thus realizing the secondary sealing function and further enhancing the sealing effect of the device.

[0039] To facilitate the positioning and installation of the flexible tray 5, a convex platform for supporting the flexible tray 5 is provided inside the middle beam 1. This convex platform not only provides stable support for the flexible tray 5 but also ensures that it maintains the correct position during installation and use, avoiding a decrease in sealing performance due to displacement.

[0040] Embodiment 2: Combined with the appendix Figure 1 and 5As shown in the figure, in this embodiment, on the basis of Embodiment 1, the split-type sealing component 4 has been further optimized in structure to improve the sealing performance and flexibility of the device. The split-type sealing component 4 is composed of two arc-shaped sealing plates 4-1 with a symmetrical structure. One side of the arc-shaped sealing plate 4-1 is curled to form a ring structure and is correspondingly hinged to the elastic telescopic support component 3 through a bracket. The other side of the arc-shaped sealing plate 4-1 is provided with a bending part. When the bending parts of the two arc-shaped sealing plates 4-1 are correspondingly attached, the sealing function is realized.

[0041] Specifically, the two arc-shaped sealing plates 4-1 can deflect around their ring structures, thereby realizing the opening or closing action. This design makes the device have higher flexibility and adaptability when dealing with the expansion and contraction deformation of the bridge. Through the deflection of the arc-shaped sealing plate 4-1, the device can maintain good sealing performance when the bridge generates displacement due to thermal expansion and contraction, and at the same time, it is convenient for the operator to clean and maintain.

[0042] Further analysis shows that a sealing strip 4-2 is installed on the bending part of the arc-shaped sealing plate 4-1. To facilitate the installation of the sealing strip 4-2, the bending part of the arc-shaped sealing plate 4-1 is provided with a groove structure, and one side of the sealing strip 4-2 can be fixed in the groove structure. When the two arc-shaped sealing plates 4-1 are closed, the two sealing strips 4-2 are in contact and cooperate with each other, thereby further improving the sealing performance. This double-sealing design not only enhances the waterproof performance of the device but also effectively prevents foreign objects from entering the inside of the bridge expansion joint, extending the service life of the device.

[0043] In terms of structural stability, since the opposite sides of the two arc-shaped sealing plates 4-1 are provided with bending parts, the two bending parts can correspondingly abut when closed. This design not only improves the structural stability when the two arc-shaped sealing plates 4-1 are closed but also enhances the reliability of the device during long-term use through the mutual support of the bending parts. In addition, the ring structure design of the arc-shaped sealing plate 4-1 enables it to maintain good sealing performance during the deflection process, and even when the bridge generates a large displacement due to thermal expansion and contraction, the sealing effect can be ensured not to be affected.

[0044] Through the above optimized design, on the basis of maintaining the original cleaning function, the bridge expansion joint sealing device of this embodiment further improves the sealing performance and structural stability, and can better meet the usage requirements of the bridge under various working conditions.

[0045] Embodiment 3: During the actual use process, it is found that when the split-type sealing component 4 is closed by means of magnetic attraction or snap fastening, it is easy to accidentally open the split-type sealing component 4 due to external vibration or impact, thereby losing the function of preventing rainwater intrusion. To solve this technical defect, this embodiment is further improved on the basis of Embodiment 1 or 2.

[0046] Combined with the attached Figure 1 and 6 As shown, a control mechanism for controlling the opening and closing of the split sealing assembly 4 is further installed on the elastic telescopic support assembly 3. The control mechanism includes a spring telescopic rod 6, a retracting device 7, and a steel wire rope 8. Among them, there are two spring telescopic rods 6, which are respectively installed on both sides of the elastic telescopic support assembly 3. One end of each spring telescopic rod 6 is correspondingly hinged to the bottom of the elastic telescopic support assembly 3, and the other ends are respectively correspondingly hinged to the two arc-shaped sealing plates 4-1. When the two arc-shaped sealing plates 4-1 are not affected by other external forces, the spring telescopic rod 6 automatically extends, controlling the arc-shaped sealing plate 4-1 to deflect downward to achieve the opening action.

[0047] Specifically, the spring telescopic rod 6 is an existing device, and its structure includes a fixed tube correspondingly hinged to the elastic telescopic support assembly 3. The other end of the fixed tube is movably inserted with a plug rod, and a compression spring capable of making the plug rod extend is arranged in the fixed tube. When the spring telescopic rod 6 extends, the arc-shaped sealing plate 4-1 deflects downward around its hinge point, thereby achieving opening; when the spring telescopic rod 6 shortens, the arc-shaped sealing plate 4-1 deflects upward to achieve closing.

[0048] To realize the closing control of the split sealing assembly 4, a retracting device 7 is further installed on the elastic telescopic support assembly 3. The two arc-shaped sealing plates 4-1 are respectively fixedly connected with a steel wire rope 8, and one ends of the two steel wire ropes 8 are correspondingly wound and connected to the retracting device 7. The retracting device 7 synchronously retracts the two steel wire ropes 8, pulling the arc-shaped sealing plates 4-1 to deflect upward against the pushing force of the spring telescopic rod 6 until the bent parts of the two arc-shaped sealing plates 4-1 correspondingly abut to achieve sealing.

[0049] Specifically, the retracting device 7 is composed of a fixed seat 7-1, a ratchet wheel 7-2, a ratchet pawl 7-3, and a grooved wheel 7-4. The fixed seat 7-1 is fixedly connected with the elastic telescopic support assembly 3, the ratchet wheel 7-2 is rotatably connected with the fixed seat 7-1, the ratchet pawl 7-3 is arranged on one side of the ratchet wheel 7-2, and is hinged to the fixed seat 7-1 through a torsion spring. The grooved wheel 7-4 is coaxially and fixedly connected with the ratchet wheel 7-2 and is used for winding the steel wire rope 8. Through the cooperation of the ratchet wheel 7-2 and the ratchet pawl 7-3, the retracting device 7 can realize a self-locking function to prevent the grooved wheel 7-4 from reversing, thereby avoiding accidental opening of the split sealing assembly 4. The ratchet wheel 7-2 and the ratchet pawl 7-3 are both provided with hexagonal prisms protruding from the fixed seat 7-1, which is convenient for the operator to use tools for driving or unlocking.

[0050] When it is necessary to close the split seal assembly 4, the operator can drive the ratchet wheel 7-2 to rotate through a socket wrench. The ratchet wheel 7-2 drives the grooved pulley 7-4 to rotate, thereby winding up the steel wire rope 8, causing the arc-shaped sealing plate 4-1 to deflect upward and close. When it is necessary to clean the garbage, the operator can drive the ratchet wheel 7-2 to deflect through a socket wrench to unlock the self-locking state of the ratchet wheel 7-2. At this time, the ratchet wheel 7-2 is in a free rotation state and loses the binding force on the steel wire rope 8. The spring telescopic rod 6 instantaneously releases and elongates, causing the arc-shaped sealing plate 4-1 to quickly deflect downward and open. Due to the instantaneous release of the spring telescopic rod 6, the split seal assembly 4 will vibrate, thereby shaking off the accumulated garbage and dust inside it.

[0051] It should be noted that since the winding devices 7 are provided at both ends of the split seal assembly 4, the operator needs to unlock both winding devices 7 to completely open the split seal assembly 4. Preferably, two operators synchronously unlock the winding devices 7 at both ends of the split seal assembly 4, which can ensure that the device generates a large vibration and is more conducive to the shedding of the internal garbage.

[0052] Furthermore, the elastic telescopic support assembly 3 is designed with a hollow structure. The fixed seat 7-1 is installed in the cavity of the elastic telescopic support assembly 3, and the grooved pulley 7-4 is located at the bottom of the elastic telescopic support assembly 3. This design can effectively protect the winding device 7 and prevent the ratchet wheel 7-2 or the ratchet pawl 7-3 from being accidentally stuck due to foreign objects invading, thus ensuring the long-term stable operation of the device.

[0053] In addition, the steel wire rope 8 bypasses the top end of the spring telescopic rod 6 and is wound and connected to the grooved pulley 7-4 correspondingly. Since the top end position of the spring telescopic rod 6 is fixed, it can deflect the steel wire rope 8, thereby ensuring that the steel wire rope 8 enters the grooved pulley 7-4 straight and preventing the steel wire rope 8 from accidentally detaching from the grooved pulley 7-4 during the winding process. To further improve the stability of the steel wire rope 8, a guiding groove can be opened at the top of the spring telescopic rod 6 to limit the steel wire rope 8 and ensure that it always remains stable during the movement process.

[0054] Through the above improved design, the bridge expansion joint sealing device of this embodiment further improves the sealing performance and operation reliability on the basis of maintaining the original cleaning function, and can better meet the use requirements of the bridge under various complex working conditions.

[0055] The parts not detailed in the present invention are the prior art. For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention; therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting, aiming to include all changes falling within the meaning and scope of the equivalent elements in the present invention.

Claims

1. A bridge expansion joint sealing device with a cleaning function, installed between two adjacent middle beams (1) of the bridge expansion joint, wherein the middle beam (1) is an I-shaped structure, and a slot is provided on the inner side of the middle beam (1) near the top; characterized in that: include: The two sealing strips (2) are respectively connected to the corresponding slots of the two middle beams (1); and arc-shaped shielding portions are provided on opposite sides of the two sealing strips (2); Two elastic telescopic support components (3) are respectively arranged at two ends of the sealing strip (2); The split-type sealing assembly (4) is installed below the elastic telescopic support assembly (3), and the shielding portion of the sealing strip (2) overlaps the top of the split-type sealing assembly (4); the split-type sealing assembly (4) can seal the gap between the two middle beams (1) when closed, and can dump the garbage accumulated therein when opened; The flexible tray (5) is placed below the split sealing assembly (4) and is used to carry garbage; and when cleaning the garbage, the portion of the flexible tray (5) drawn out from between the two middle beams (1) can be rolled up.

2. The bridge expansion joint sealing device with cleaning function as claimed in claim 1, characterized in that: The elastic telescopic support component (3) comprises: A support rod (3-1) having countersunk holes at both ends; Two top heads (3-2) are respectively plugged into two ends of the support rod (3-1); The spring (3-3) is arranged between the top head (3-2) and the bottom of the countersunk hole of the support rod (3-1) and is used for pushing the top head (3-2).

3. The bridge expansion joint sealing device with cleaning function as claimed in claim 2, characterized in that: The elastic telescopic support assembly (3) further comprises a pressure strip (3-4); one side of the pressure strip (3-4) corresponding to the top head (3-2) is in a convex-shaped structure, and the other side is in a columnar structure, and a neck portion is provided between the columnar structure and the convex-shaped structure; the top head (3-2) is provided with a snap-in opening corresponding to the convex-shaped structure of the pressure strip (3-4); one side of the sealing strip (2) corresponding to the columnar structure of the pressure strip (3-4) is provided with a groove; when the columnar structure of the pressure strip (3-4) extends into the groove of the sealing strip (2), the thickness of the sealing strip (2) can be increased.

4. The bridge expansion joint sealing device with cleaning function as claimed in claim 1, characterized in that: The split sealing assembly (4) comprises two arc-shaped sealing plates (4-1) with a symmetrical structure, one side of the arc-shaped sealing plate (4-1) being curled into a ring-shaped structure, and the side of the arc-shaped sealing plate (4-1) being correspondingly hinged to the elastic telescopic support assembly (3) via a bracket; the other side of the arc-shaped sealing plate (4-1) is provided with a bending portion, and sealing is achieved when the bending portions of the two arc-shaped sealing plates (4-1) are correspondingly fitted.

5. The bridge expansion joint sealing device with cleaning function as claimed in claim 4, characterized in that: A sealing belt (4-2) is installed on the bent portion of the arc-shaped sealing plate (4-1).

6. The bridge expansion joint sealing device with cleaning function according to any one of claims 1 to 5, characterized in that: The elastic telescopic support assembly (3) is also provided with a control mechanism for controlling the opening and closing of the split sealing assembly (4), the control mechanism comprising: Two spring telescopic rods (6), one end of the two spring telescopic rods (6) being hinged to the bottom of the elastic telescopic support assembly (3), and the other ends of the two spring telescopic rods (6) being hinged to the two arc-shaped sealing plates (4-1) respectively; when the two arc-shaped sealing plates (4-1) are not subjected to other external forces, the two spring telescopic rods (6) automatically extend to control the two arc-shaped sealing plates (4-1) to open; A retracting device (7) mounted on the elastic telescopic support assembly (3); Two steel wire ropes (8), one end of the two steel wire ropes (8) is respectively fastened and connected to the two arc-shaped sealing plates (4-1), and the other end of the two steel wire ropes (8) is wound and connected to the reeling device (7); the reeling device (7) controls the closing of the two arc-shaped sealing plates (4-1) by synchronously reeling in the two steel wire ropes (8).

7. The bridge expansion joint sealing device with cleaning function as claimed in claim 6, characterized in that: The reeling device (7) comprises: A fixed seat (7-1) is tightly connected to the elastic telescopic support assembly (3); A ratchet wheel (7-2) is rotatably connected to the fixed seat (7-1); A ratchet pawl (7-3) is arranged on one side of the ratchet wheel (7-2); the ratchet pawl (7-3) is correspondingly hinged to the fixing seat (7-1), and a torsion spring for driving the ratchet pawl (7-3) to lock the ratchet wheel (7-2) is arranged at the corresponding hinged position of the ratchet pawl (7-3) and the fixing seat (7-1); The groove wheel (7-4) is coaxially and tightly connected to the ratchet wheel (7-2) and is used for winding the steel wire rope (8).

8. The bridge expansion joint sealing device with cleaning function as claimed in claim 7, characterized in that: The ratchet wheel (7-2) and the pawl (7-3) are both provided with a hexagonal column extending out of the fixing seat (7-1).

9. The bridge expansion joint sealing device with cleaning function as claimed in claim 7, characterized in that: The elastic telescopic support component (3) is a hollow structure, and the fixing seat (7-1) is installed in the cavity of the elastic telescopic support component (3); the groove wheel (7-4) is located at the bottom of the elastic telescopic support component (3); and the steel wire rope (8) is wound around the top end of the spring telescopic rod (6) and connected with the groove wheel (7-4) accordingly.

10. The bridge expansion joint sealing device with cleaning function as claimed in claim 1, characterized in that: A boss for supporting the flexible tray (5) is provided on the inner side of the middle beam (1).

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