Telescopic device for bridge construction

Abstract

The invention provides a telescopic device for bridge construction, which comprises a transverse buffer mechanism arranged on a concrete bridge, a longitudinal buffer mechanism arranged on the transverse buffer mechanism, a telescopic mechanism attached to the top end of the longitudinal buffer mechanism, a rubber layer connected to one side of the concrete bridge, and a middle bridge body fixedly connected to one side of the rubber layer. A longitudinal buffer mechanism is arranged on the middle bridge body; the transverse buffering mechanism comprises a first clamping groove formed in the concrete bridge, a first clamping block is arranged in the first clamping groove, a limiting block is fixedly connected to the outer wall of the first clamping block, a limiting column is fixedly connected to one end of the first clamping block, a moving shaft is slidably connected to the inner wall of the limiting column, and the outer wall of the moving shaft is sleeved with a first damping spring. By arranging the transverse buffering mechanism, the impact force generated when a vehicle passes through is buffered, the telescopic device is protected, and when the top face of the middle bridge body generates certain longitudinal height change, the stability is good, and the applicability is high.

Description

Technical Field

[0001] The invention belongs to the technical field of bridge engineering, and in particular relates to a telescopic device for bridge construction. Background Art

[0002] During bridge construction, the most important component is the bridge expansion device. To accommodate bridge deck deformation, these devices are typically installed between beam ends, between beam ends and abutments, or at hinged joints. However, existing bridge expansion devices often use rubber bands as the gap-span material, without a protective structure above them. Impurities such as stones, iron filings, and dirt dropped by vehicles during travel accumulate on the rubber bands, severely damaging them over time. Furthermore, seawater can corrode the rubber bands, reducing their elasticity and shortening their service life. Furthermore, existing bridge expansion devices often leave large gaps in the rubber bands, causing noticeable vibration when passing private vehicles and electric vehicles with smaller wheels, which can easily cause discomfort.

[0003] The existing patent (publication number: CN 212533712 U) is a bridge expansion device for bridge construction, comprising a first lower cross steel plate, a second lower cross steel plate, a first upper cross steel plate, a second upper cross steel plate and a rubber filling block. The first lower cross steel plate and the second lower cross steel plate are cross-matched and connected on one side of the upper part of the bridge expansion joint, and the first upper cross steel plate and the second upper cross steel plate are cross-matched and connected on the other side of the common upper bridge expansion joint of the first lower cross steel plate and the second lower cross steel plate. This can increase the firmness of the connection of the bridge expansion part, and at the same time, there is no obvious opening in the upper part of the extension joint of the bridge, so that when vehicles pass, there is little vibration and high comfort. In addition, rubber filling blocks are filled between the first lower cross steel plate and the second lower cross steel plate and between the first upper cross steel plate and the second upper cross plate, which can prevent vehicle debris from accumulating in the expansion joint and causing damage to the expansion device, and solve the problems of poor connection effect, poor flatness, poor protection effect and short service life of the existing technology.

[0004] However, the above patent only connects the bridge body and the cross steel plates through rubber blocks, and the bridge expands and contracts at the expansion joints through the thermal expansion and contraction of the rubber blocks. During the long-term movement and deformation process, the rubber plates are prone to aging, and the elasticity of the rubber plates will be greatly reduced. The rubber plates can no longer shrink as the bridge deforms, causing damage to the bridge expansion device. In addition, the limited service life leads to a high frequency of bridge maintenance, and the entire rubber plate needs to be replaced during maintenance, resulting in high maintenance costs. Summary of the Invention

[0005] In view of this, the present invention aims to overcome the defects in the prior art and proposes a telescopic device for bridge construction.

[0006] To achieve the above object, the technical solution created by the present invention is implemented as follows:

[0007] A telescopic device for bridge construction includes a transverse buffer mechanism provided on a concrete bridge, an outer wall of the transverse buffer mechanism is slidably connected to a longitudinal buffer mechanism, a top end of the longitudinal buffer mechanism is fitted with a telescopic mechanism, one side of the concrete bridge is connected to a rubber layer, one side of the rubber layer is fixedly connected to an intermediate bridge body, and the intermediate bridge body is provided with a longitudinal buffer mechanism; the transverse buffer mechanism includes a first card slot provided on the concrete bridge, a first card block is provided in the first card slot, an outer wall of the first card block is fixedly connected to a limiting block, one end of the first card block is fixedly connected to a limiting column, an inner wall of the limiting column is slidably connected to a movable shaft, and an outer wall of the movable shaft is sleeved with a first damping spring.

[0008] Furthermore, the first damping spring is fixedly connected to the limit column, one end of the first damping spring is fixedly connected to a longitudinal buffer mechanism, and the first slot, first block, limit block, limit column and first damping spring are each provided in two groups, and the two groups of the first slot, first block, limit block, limit column and first damping spring are symmetrically arranged at both ends of the movable shaft.

[0009] Furthermore, the longitudinal buffer mechanism includes a second card slot opened on the middle bridge body, a second card block is arranged in the second card slot, the outer wall of the second card block is fixedly connected to a connecting block, one side of the connecting block is fixedly connected to a moving component, one end of the moving component is fixedly connected to a moving ring, one end of the moving ring is fixedly connected to a second damping spring, and the moving ring is slidably connected to the first damping spring.

[0010] Furthermore, the moving assembly includes a first fixed block fixedly connected to one side of the connecting block, the inner wall of the first fixed block is fixedly connected to the first connecting shaft, the outer wall of the first connecting shaft is rotatably connected to the connecting rod, the inner wall of the connecting rod is rotatably connected to the second connecting shaft, the outer wall of the second connecting shaft is fixedly connected to the second fixed block, and the second fixed block is fixedly connected to the moving ring.

[0011] Furthermore, the first fixed block, the first connecting shaft, the connecting rod, the second connecting shaft and the second fixed block are each provided in two groups, and the two groups of the first fixed block, the first connecting shaft, the connecting rod, the second connecting shaft and the second fixed block are symmetrically arranged on both sides of the connecting block, and the connecting block, the moving assembly and the moving ring are each provided in two groups, and the connecting block, the moving assembly and the moving ring are symmetrically arranged on both sides of the second damping spring.

[0012] Furthermore, the telescopic mechanism includes a movable groove opened on the concrete bridge, a movable steel plate is slidably connected in the groove of the movable groove, a first cross steel plate is fixedly connected to one side of the concrete bridge, and a second cross steel plate is fixedly connected to one side of the concrete bridge, and the first cross steel plate and the second cross steel plate are inserted into each other.

[0013] Furthermore, the transverse buffer mechanism and the longitudinal buffer mechanism are both provided with multiple groups, the concrete bridge and the rubber layer are provided with two groups, and the two groups of the concrete bridge and the rubber layer are symmetrically arranged on both sides of the middle bridge body.

[0014] Compared with the prior art, the present invention has the following advantages:

[0015] The present invention provides a transverse buffer mechanism, which can be extended and retracted, and plays a buffering role in the expansion and contraction between the two groups of concrete bridges, thereby improving the stability of the expansion and contraction. A longitudinal buffer mechanism is provided to buffer the impact force when the vehicle passes by, protect the expansion and contraction device, and also enables the longitudinal buffer mechanism to be expanded and contracted when a certain longitudinal height change occurs on the top surface of the middle bridge body. This device can simultaneously expand and contract in the horizontal and vertical directions, has good stability, and is highly applicable. The transverse buffer mechanism and the longitudinal buffer mechanism can be disassembled and assembled in a single group. When parts are damaged, the entire device does not need to be replaced, and the maintenance cost is low. At the same time, it is easy to install and easy to repair. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings, which constitute part of the present invention, are intended to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are intended to explain the present invention and do not constitute an undue limitation of the present invention. In the accompanying drawings:

[0017] Figure 1 A schematic diagram of the structure created by the present invention;

[0018] Figure 2 A schematic diagram of a partial structure for creating the present invention;

[0019] Figure 3 Schematic diagram of the transverse buffer mechanism and the longitudinal buffer mechanism of the present invention. DETAILED DESCRIPTION

[0020] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0021] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are 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 cannot be understood as a limitation on the present invention. In addition, the terms "first", "second" and the like are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, features defined as "first", "second" and the like may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0022] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to internal connections between two components. Those skilled in the art can understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0023] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0024] A bridge expansion device for bridge construction, such as Figures 1 to 3 As shown, it includes a concrete bridge 100, on which a transverse buffer mechanism 200 is provided, the outer wall of the transverse buffer mechanism 200 is slidably connected to a longitudinal buffer mechanism 300, the top of the longitudinal buffer mechanism 300 is attached to a telescopic mechanism 400, one side of the concrete bridge 100 is connected to a rubber layer 500, one side of the rubber layer 500 is fixedly connected to an intermediate bridge body 600, and the intermediate bridge body 600 is provided with a longitudinal buffer mechanism 300.

[0025] The telescopic mechanism 400 includes a movable groove 410 opened on the concrete bridge 100, and a movable steel plate 420 is slidably connected in the groove of the movable groove 410. A first cross steel plate 430 is fixedly connected to one side of the concrete bridge 100, and a second cross steel plate 440 is fixedly connected to one side of the concrete bridge 100, and the first cross steel plate 430 and the second cross steel plate 440 are inserted into each other; the transverse buffer mechanism 200 and the longitudinal buffer mechanism 300 are both provided with multiple groups, and the concrete bridge 100 and the rubber layer 500 are provided with two groups, and the two groups of concrete bridges 100 and rubber layers 500 are symmetrically arranged on both sides of the middle bridge body 600.

[0026] When the two groups of concrete bridges 100 approach or move away from each other, the first cross steel plate 430 and the second cross steel plate 440 slide and engage with each other, and at the same time, the movable steel plate 420 is driven to slide in the movable groove 410, thereby increasing the firmness of the connection of the telescopic part of the bridge. At the same time, the movable groove 410 can block the lower transverse buffer mechanism 200 and the longitudinal buffer mechanism 300 to prevent debris from falling into the groove between the two groups of concrete bridges 100, and provide certain protection for the transverse buffer mechanism 200 and the longitudinal buffer mechanism 300. The rubber layer 500 has a certain buffering effect on the movement of the concrete bridge 100. The transverse buffer mechanism 200 can buffer the movement between the concrete bridges 100, and the longitudinal buffer mechanism 300 can effectively buffer the impact force generated when the car passes by, thereby improving the service life of the telescopic device. At the same time, the transverse buffer mechanism 200 and the longitudinal buffer mechanism 300 can be disassembled and assembled as a single group for easy maintenance.

[0027] like Figure 2 and Figure 3As shown, the transverse buffer mechanism 200 includes a first slot 210 opened on the concrete bridge 100, a first block 220 is provided in the first slot 210, the outer wall of the first block 220 is fixedly connected to the limiting block 230, one end of the first block 220 is fixedly connected to the limiting column 240, the inner wall of the limiting column 240 is slidably connected to the moving shaft 250, and the outer wall of the moving shaft 250 is sleeved with a first damping spring 260; the first damping spring 260 is fixedly connected to the limiting column 240, one end of the first damping spring 260 is fixedly connected to the longitudinal buffer mechanism 300, the first slot 210, the first block 220 and the limiting column 240 are fixedly connected. 20. The limit block 230, the limit column 240 and the first damping spring 260 are each provided in two groups, and the two groups of the first slot 210, the first block 220, the limit block 230, the limit column 240 and the first damping spring 260 are symmetrically arranged at both ends of the movable shaft 250; the longitudinal buffer mechanism 300 includes a second slot 310 opened on the middle bridge body 600, a second block 320 is arranged in the second slot 310, the outer wall of the second block 320 is fixedly connected to the connecting block 330, one side of the connecting block 330 is fixedly connected to the movable assembly 340, and one end of the movable assembly 340 is fixedly connected to the movable ring 350.

[0028] One end of the moving ring 350 is fixedly connected to the second damping spring 360, and the moving ring 350 is slidably connected to the first damping spring 260; the moving assembly 340 includes a first fixed block 341 fixedly connected to one side of the connecting block 330, the inner wall of the first fixed block 341 is fixedly connected to the first connecting shaft 342, the outer wall of the first connecting shaft 342 is rotatably connected to the connecting rod 343, the inner wall of the connecting rod 343 is rotatably connected to the second connecting shaft 344, the outer wall of the second connecting shaft 344 is fixedly connected to the second fixed block 345, and the second fixed block 345 is fixedly connected to the moving The rings 350 are fixedly connected; the first fixed block 341, the first connecting shaft 342, the connecting rod 343, the second connecting shaft 344 and the second fixed block 345 are each provided with two groups, and the two groups of first fixed blocks 341, the first connecting shaft 342, the connecting rod 343, the second connecting shaft 344 and the second fixed block 345 are symmetrically arranged on both sides of the connecting block 330, and the connecting block 330, the moving assembly 340 and the moving ring 350 are each provided with two groups, and the connecting block 330, the moving assembly 340 and the moving ring 350 are symmetrically arranged on both sides of the second damping spring 360.

[0029] When installing the transverse buffer mechanism 200 and the longitudinal buffer mechanism 300, the second block 320 is inserted into the second slot 310, the lower group of connecting blocks 330 abuts against the middle bridge body 600, and the upper group of connecting blocks 330 abuts against the movable steel plate 420. The first block 220 is inserted into the first slot 210, and the limit block 230 abuts against the concrete bridge 100. When the two groups of concrete bridges 100 are close to each other, the moving shaft 250 is driven to move on the limit column 240, thereby driving the first damping spring 260 to deform, which has a buffering effect on the movement of the concrete bridge 100. When a vehicle passes by, the telescopic mechanism 40 0 drives the connecting block 330 to move downward, thereby driving the first fixed block 341 to move, and further driving the connecting rod 343 connected by the first connecting shaft 342 to move, and driving the second fixed block 345 to move. Since the moving shaft 250 restricts the movement trajectory of the moving ring 350, the movement of the second fixed block 345 drives the moving ring 350 to slide on the outer wall of the moving shaft 250, thereby driving the second damping spring 360 to deform. The elastic force of the second damping spring 360 itself has a certain buffering effect on the force it receives at this time, allowing the vehicle to pass more smoothly over the telescopic mechanism 400 between the two sets of concrete bridges 100.

[0030] Since the middle bridge body 600 and the concrete bridge 100 are made of the same material, when the concrete bridge 100 moves laterally, the top surface of the middle bridge body 600 will produce a certain longitudinal height change, and the longitudinal buffer mechanism 300 can also be telescopic to play a certain buffering role. The maximum value of the distance between the two groups of concrete bridges 100 after movement will be less than the distance between the two groups of limit blocks 230, preventing the first block 220 from detaching from the first slot 210. Similarly, the maximum value of the distance between the middle bridge body 600 and the telescopic mechanism 400 after movement will be less than the distance between the two groups of connecting blocks 330, preventing the second block 320 from detaching from the second slot 310. The parts not involved in the device are the same as the existing technology or can be implemented using the existing technology.

[0031] Compared with traditional devices, the device of the invention has the following advantages:

[0032] (1) By setting up a transverse buffer mechanism, it can be extended and retracted, and at the same time, it plays a buffering role in the expansion and contraction between the two groups of concrete bridges, thereby improving the stability of the expansion and contraction. A longitudinal buffer mechanism is set up to buffer the impact force when the vehicle passes by, protect the expansion and contraction device, and also make the longitudinal buffer mechanism able to expand and contract when a certain longitudinal height change occurs on the top surface of the middle bridge body. Compared with the traditional expansion and contraction device, this device can simultaneously expand and contract in the horizontal and vertical directions, has better stability and strong applicability.

[0033] (2) The transverse buffer mechanism and the longitudinal buffer mechanism can be disassembled and assembled in a single group. When a part is damaged, the entire device does not need to be replaced. Compared with the traditional telescopic device, the maintenance cost is lower. At the same time, it is easy to install and easy to repair.

[0034] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A telescopic device for bridge construction, characterized in that: The invention comprises a transverse buffer mechanism provided on the concrete bridge, the outer wall of the transverse buffer mechanism is slidably connected to the longitudinal buffer mechanism, the top of the longitudinal buffer mechanism is fitted with a telescopic mechanism, one side of the concrete bridge is connected to a rubber layer, one side of the rubber layer is fixedly connected to the intermediate bridge body, and the intermediate bridge body is provided with a longitudinal buffer mechanism; the transverse buffer mechanism comprises a first card slot provided on the concrete bridge, a first card block is provided in the slot of the first card slot, the outer wall of the first card block is fixedly connected to the limiting block, one end of the first card block is fixedly connected to the limiting column, the inner wall of the limiting column is slidably connected to the movable shaft, and the outer wall of the movable shaft is sleeved with a first damping spring.

2. The telescopic device for bridge construction according to claim 1, characterized in that: The first damping spring is fixedly connected to the limit column, one end of the first damping spring is fixedly connected to a longitudinal buffer mechanism, and the first slot, first block, limit block, limit column and first damping spring are each provided in two groups, and the two groups of the first slot, first block, limit block, limit column and first damping spring are symmetrically arranged at both ends of the movable shaft.

3. The telescopic device for bridge construction according to claim 1, characterized in that: The longitudinal buffer mechanism includes a second card slot opened on the middle bridge body, a second card block is arranged in the second card slot, the outer wall of the second card block is fixedly connected to a connecting block, one side of the connecting block is fixedly connected to a moving component, one end of the moving component is fixedly connected to a moving ring, one end of the moving ring is fixedly connected to a second damping spring, and the moving ring is slidably connected to the first damping spring.

4. The telescopic device for bridge construction according to claim 3, characterized in that: The moving assembly includes a first fixed block fixedly connected to one side of the connecting block, the inner wall of the first fixed block is fixedly connected to the first connecting shaft, the outer wall of the first connecting shaft is rotatably connected to the connecting rod, the inner wall of the connecting rod is rotatably connected to the second connecting shaft, the outer wall of the second connecting shaft is fixedly connected to the second fixed block, and the second fixed block is fixedly connected to the moving ring.

5. The telescopic device for bridge construction according to claim 4, characterized in that: The first fixed block, the first connecting shaft, the connecting rod, the second connecting shaft and the second fixed block are each provided in two groups, and the two groups of the first fixed block, the first connecting shaft, the connecting rod, the second connecting shaft and the second fixed block are symmetrically arranged on both sides of the connecting block, and the connecting block, the moving assembly and the moving ring are each provided in two groups, and the connecting block, the moving assembly and the moving ring are symmetrically arranged on both sides of the second damping spring.

6. The telescopic device for bridge construction according to claim 1, characterized in that: The telescopic mechanism includes a movable groove opened on the concrete bridge, a movable steel plate is slidably connected in the movable groove, a first cross steel plate is fixedly connected to one side of the concrete bridge, and a second cross steel plate is fixedly connected to the other side of the concrete bridge, and the first cross steel plate and the second cross steel plate are inserted into each other.

7. The telescopic device for bridge construction according to claim 1, characterized in that: The transverse buffer mechanism and the longitudinal buffer mechanism are both provided with multiple groups, and the concrete bridge and the rubber layer are provided with two groups, and the two groups of the concrete bridge and the rubber layer are symmetrically arranged on both sides of the middle bridge body.

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