A mobile bridge widening joint construction device

Abstract

The utility model belongs to bridge construction technical field, concretely relates to a movable bridge spliced wide joint construction device, including the butt in new bridge, old bridge lower surface's support subassembly and set up in support subassembly lower surface's support subassembly, support subassembly includes two piece horizontal plane mutual sliding connection's supporting plate, the common sliding of two piece supporting plate is equipped with multiple slide blocks, and each slide block's activity direction is perpendicular with the length direction of joint, each slide block is arrayed along the length direction of joint, the upper surface of two piece supporting plate is detachably connected with formwork and side baffle, and the common composition pouring chamber between formwork, two piece side baffle and new bridge, old bridge, support subassembly includes multiple first telescopic link that hinged in each supporting plate lower surface, adopt the utility model technical scheme, can effectively solve the problem that the current bridge spliced wide joint construction is short of a kind of structure simple, adjustment is easy, flexible turnover's temporary support.

Description

Technical Field

[0001] This utility model belongs to the field of bridge construction technology, specifically relating to a mobile bridge widening joint construction device. Background Technology

[0002] With the continuous growth of traffic flow, the capacity of existing highway bridges is gradually failing to meet actual demand, making bridge widening and reconstruction an important engineering means to improve road transport efficiency. In bridge widening construction, the treatment of the joints between the old and new bridge structures is a critical step, as its construction quality directly determines the overall load-bearing performance, structural stability, and service life of the widened bridge. Due to differences in foundation settlement, material shrinkage deformation, and temperature stress between the old and new bridges, joints are prone to cracks, leaks, or structural separation. Therefore, specialized construction equipment is needed to achieve precise construction at the joints. Currently, bridge widening joint construction equipment mainly consists of a formwork system, a rebar connection mechanism, temporary support components, and grouting equipment. The formwork system defines the shape and size of the concrete poured at the joint; the rebar connection mechanism transfers the load between the old and new bridge rebars through methods such as rebar installation, welding, or mechanical connection; the temporary support components are used for temporary fixation and elevation adjustment of the old and new bridge structures during construction; and the grouting equipment injects sealing material into the joint gaps to achieve waterproof sealing. Alternatively, for example, a Chinese patent discloses a connection structure for wet joints of new and old wide bridges (patent publication number: CN220908131U). By setting up steel plate support components, it realizes the formwork-free pouring of concrete in the wet joint area, which improves the on-site construction speed, reduces the impact on ground traffic at the bridge site, and at the same time improves the overall stress performance between the new and old bridges and enhances the durability of the bridge.

[0003] While the above-mentioned technical solutions for bridge widening joints have been provided, they suffer from numerous shortcomings in practical applications. For example, the formwork is often a customized rigid structure, making it difficult to adapt to joints of varying widths; the height and angle of temporary supports are difficult to adjust, limiting flexibility. Therefore, to address the deficiencies of existing bridge widening joint construction devices in terms of versatility, flexibility, and adaptability, there is an urgent need to develop a new construction device with optimized structure, convenient adjustment, and stable construction quality to meet the technical requirements of bridge widening projects. Utility Model Content

[0004] In view of this, the purpose of this utility model is to provide a mobile bridge widening joint construction device to solve the problem of the lack of a temporary support with simple structure, convenient adjustment and flexible turnover in the current bridge widening joint construction.

[0005] To achieve the above objectives, this utility model provides the following technical solution: A mobile bridge widening joint construction device is installed at the joint between a new bridge and an old bridge. It includes a support assembly abutting against the lower surface of the new and old bridges, and a supporting assembly disposed on the lower surface of the support assembly. The support assembly includes two support plates slidably connected to each other in a horizontal plane. The support plates are arranged along the length direction of the joint and symmetrically about the length direction of the joint. Multiple sliders slide between the two support plates, and the movement direction of each slider is perpendicular to the length direction of the joint. The sliders are arrayed along the length direction of the joint. A template and side baffles are detachably connected to the upper surface of both support plates. The template is placed horizontally along the length of the joint. Two side baffles are provided and are respectively set vertically on both sides of the template length. The template, the two side baffles, and the new bridge and the old bridge together form a casting chamber. The support assembly includes multiple first telescopic rods hinged to the lower surface of each support plate. Each first telescopic rod is symmetrically arranged about the length of the joint. Each first telescopic rod has a base at the end away from the support plate, and the surface of each base is rotatably connected to multiple rollers that abut against the corresponding bridge surface. Any two bases symmetrically arranged about the joint are detachably connected to a horizontally arranged second telescopic rod.

[0006] Furthermore, each of the trays has a positioning groove on its upper surface that mates with the side baffle, and each tray is detachably connected to the side baffle with a reinforcing plate. The reinforcing plate is vertically arranged and detachably connected to the side baffle, and the bottom of the reinforcing plate abuts against the upper surface of the tray.

[0007] Furthermore, each of the reinforcing plates has a limiting part protruding from its surface at the bottom, and each of the support plates has a limiting groove on its upper surface that cooperates with the limiting part. The limiting groove is set along the width direction of the joint, and when the limiting part cooperates with the limiting groove, the limiting part can move a certain distance along the width direction of the joint.

[0008] Furthermore, each of the bases has a connecting sleeve hinged to one side surface, and the connecting sleeve rotates in the vertical plane. The two ends of each of the second telescopic rods are respectively threaded to the two corresponding connecting sleeves.

[0009] Furthermore, a third telescopic rod is detachably connected between two adjacent base pieces, and the third telescopic rod is arranged along the length direction of the joint.

[0010] Furthermore, the surfaces of each pallet that abut against the bridge are covered with a flexible filler material.

[0011] Furthermore, the template is composed of multiple strip steel plates along the length of the joint, and the multiple steel plates are hinged to each other.

[0012] The beneficial effects of this utility model are as follows: 1. This utility model utilizes a "slider + adjusting ring" cooperative structure in the support component (the slider moves along the direction perpendicular to the joint, and the adjusting ring is threadedly connected to the slider and symmetrically arranged), which allows for flexible adjustment of the distance between the two L-shaped support plates, thereby adapting to new and old bridge joints of different widths; at the same time, the template and side baffle are detachably connected, eliminating the need for redesign for specific joints as with traditional customized rigid templates, effectively solving the defect of existing devices that "cannot adapt to the needs of joints of different widths", significantly improving the versatility of the device for different bridge widening projects, and reducing construction costs and time losses; 2. In the support assembly, four first telescopic rods are hinged to the lower surface of the support plate, allowing for free adjustment of the support height. The hinged structure can adapt to angular deviations caused by settlement and temperature deformation in new and old bridges, accurately compensating for deformation and avoiding additional stress at the joint (solving the problem of "difficulty in adjusting height and angle, and limited flexibility" in existing temporary supports). At the same time, the second telescopic rods are detachably connected to symmetrical bases, which can strengthen the base spacing, improve support stability, and further ensure the stress balance of the structure during construction. The rollers connected to the rotating surface of the base can drive the entire device to move along the joint length, eliminating the need for repeated disassembly and reassembly of the device for long joints, greatly simplifying the construction process. Combined with the way the support plate is set along the joint length, continuous operation of joint construction can be achieved, significantly improving construction efficiency, especially suitable for joint construction scenarios of large-span bridges.

[0013] Other advantages, objectives, and features of this invention will be set forth in the following description and will be apparent to those skilled in the art to some extent, or may be learned by practice of this invention. The objectives and other advantages of this invention can be realized and obtained through the following description. Attached Figure Description

[0014] To make the objectives, technical solutions, and beneficial effects of this utility model clearer, the following drawings are provided for illustration: Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a side view of the overall structure of this utility model; Figure 3 This is a schematic diagram of the supporting component and the auxiliary component of this utility model; Figure 4 for Figure 3 Enlarged view of point A in the middle; Figure 5 This is a schematic diagram of the supporting component of this utility model; Figure 6 This is a schematic diagram of the folding and placement of the template of this utility model.

[0015] The following labels are used in the attached diagram: 1 Bridge, 2 Support plate, 3 Slider, 4 Adjusting ring, 5 Template, 6 Side baffle, 7 Casting chamber, 8 First telescopic rod, 9 Base, 10 Roller, 11 Positioning groove, 12 Reinforcing plate, 13 Limiting part, 14 Limiting groove, 15 Connecting sleeve, 16 Second telescopic rod, 17 Third telescopic rod, 18 Flexible filling material. Detailed Implementation

[0016] like Figures 1-6 As shown, A mobile bridge widening joint construction device is installed at the joint between a new bridge and an old bridge. It includes a support component abutting against the lower surface of the new and old bridges, and a support component installed on the lower surface of the support component. The support component includes two support plates 2 that are slidably connected to each other in a horizontal plane. The support plates 2 are arranged along the length direction of the joint and symmetrically about the length direction of the joint. The vertical cross-section of each support plate 2 is L-shaped, and the upper surface of each support plate 2 abuts against the corresponding bridge surface 1. Multiple sliders 3 are slidably inserted between the two support plates 2. The sliders 3 are cylindrical, and the direction of movement of each slider 3 is perpendicular to the length direction of the joint. The sliders 3 are arranged in an array along the length direction of the joint. One end of each slider 3 is welded and fixed to the surface of one of the support plates 2, and the other end passes through the surface of the corresponding support plate 2. Two adjusting rings 4 are rotatably connected to the support plate 2 surface passing through the slider 3. The adjusting rings 4 are coaxially arranged with the corresponding sliders 3 and threadedly connected to them. The two adjusting rings 4 are symmetrically arranged about the axis of the width direction of the support plate 2. The upper surfaces of the two support plates 2 are detachably connected to the template 5 and the side baffles 6. The template 5 is placed horizontally along the length direction of the joint. There are two side baffles 6, which are respectively arranged vertically on both sides of the length direction of the template 5. The template 5, the two side baffles 6, and the new bridge and the old bridge together form the casting chamber 7. The support assembly includes four first telescopic rods 8 hinged to the lower surface of each support plate 2. Each first telescopic rod 8 is symmetrically arranged about the length direction of the joint. The end of each first telescopic rod 8 away from the support plate 2 is vertically fixed with a base 9. The surface of the base 9 is rotatably connected to multiple rollers 10 that abut against the surface of the corresponding bridge 1. Any two bases 9 symmetrically arranged about the joint are detachably connected to a horizontally arranged second telescopic rod 16.

[0017] As shown in the figure, before pouring the concrete at the joint between the new and old bridges, the distance between the two support plates 2 is adjusted according to the width of the joint. By rotating the two adjusting rings 4, the corresponding sliders 3 can be moved along their axes, indirectly adjusting the distance between the two support plates 2 (to accommodate joints of different widths within a certain range), until the upper surfaces of the two support plates 2 just abut against the lower surfaces of the new and old bridges. At this point, the two support plates 2 are fixed and maintain their current state under the action of the adjusting rings 4 and sliders 3. Then, the length of each first telescopic rod 8 is adjusted to lift each support plate 2 and abut against the corresponding lower surfaces of the new and old bridges. The length of each first telescopic rod 8 is further stretched so that the rollers 10 at the other end of the first telescopic rod 8 abut against the corresponding surface of the bridge 1. Depending on the height of the bridge 1, the rollers 10 can be abutted against the surface of the bridge 1 or the ground (the figure shows that all rollers 10 abut against the surface of the bridge 1). At this point, the two support plates 2 are respectively... The second telescopic rods 16 are fixed to the underside of the new and old bridges. Then, the two ends of each second telescopic rod 16 are connected to the corresponding two bases 9 and fixedly connected. At the same time, the length of the second telescopic rods 16 is extended so that the second telescopic rods 16 apply opposite horizontal forces to the two bases 9, so that each base 9 can be firmly fixed to the surface of the bridge 1. Furthermore, the two first telescopic rods 8, one second telescopic rod 16, and two support plates 2 in the same vertical plane form a stable equilateral triangle structure, which can indirectly improve the stability of the two support plates 2. After fixing the two support plates 2, the template 5 is placed between the two support plates 2 from the joint. The template 5 can cover the gap between the two support plates 2 and form the bottom mold of the pouring chamber 7. Then, the two side baffles 6 are connected to the support plates 2 respectively to form the side mold of the pouring chamber 7. At this time, the template 5, the two side baffles 6, and the opposite side surfaces of the new and old bridges together form the pouring chamber 7. Then, concrete is poured into the pouring chamber 7 to complete the filling work at the joint. After the concrete at the joint has cured, remove the side baffles 6, adjust and shorten the length of each first telescopic rod 8 so that the two support plates 2 move downwards a certain distance and no longer abut against the lower surfaces of the new and old bridges. At the same time, separate the template 5 from the concrete poured at the joint and place the template 5 on the upper surface of the two support plates 2. Since the rollers 10 on each base 9 abut against the surface of the bridge 1, the two support plates 2 can be moved along the length of the bridge 1 to the next joint that needs to be filled. After the two support plates 2 have moved to the designated position, adjust and extend the length of each first telescopic rod 8 again so that the two support plates 2 abut against the lower surfaces of the new and old bridges respectively. Repeat the above process of placing the template 5, side baffles 6 and pouring concrete to complete the repair of the joint.

[0018] The first telescopic rod 8 and the second telescopic rod 16 can maintain their current position after the length changes. This can be achieved by threaded connection between the rods or by setting a locking block at the connection. This is existing technology for those skilled in the art, so it will not be described in detail.

[0019] In this embodiment, each of the trays 2 has a positioning groove 11 on its upper surface that cooperates with the side baffle 6, and each tray 2 is detachably connected to the side baffle 6 with a reinforcing plate 12. The reinforcing plate 12 is vertically arranged and detachably connected to the side baffle 6 through a tenon and mortise structure, and the bottom of the reinforcing plate 12 abuts against the upper surface of the tray 2.

[0020] As shown in the figure, the side baffle 6 and the two support plates 2 can be quickly disassembled and assembled through the positioning groove 11, which is convenient for construction and also facilitates the positioning of the side baffle 6; the reinforcing plate 12 can improve the lateral support of the side baffle 6 and improve the stability of the side baffle 6 during concrete pouring.

[0021] In this embodiment, each of the reinforcing plates 12 has a limiting part 13 protruding from its surface at the bottom, and each of the support plates 2 has a limiting groove 14 that cooperates with the limiting part 13 on its upper surface. The limiting groove 14 is arranged along the width direction of the joint, and when the limiting part 13 cooperates with the limiting groove 14, the limiting part 13 can move a distance along the width direction of the joint.

[0022] As shown in the figure, the cooperation between the limiting part 13 and the limiting groove 14 can effectively improve the stability of the connection between the reinforcing plate 12 and the support plate 2, and indirectly improve the stability between the side baffle 6 and the support plate 2, thereby effectively improving the lateral support of the side baffle 6.

[0023] Since the two support plates 2 are slidably connected to each other and their width can be adjusted, the width of one side surface of the side baffle 6 can be increased by detachably connecting the expansion block (the expansion block is not shown in the figure) through the tenon and mortise structure, so as to accommodate the joints of different widths within a certain range; and the limiting part 13 can also move laterally a certain distance after cooperating with the limiting groove 14, in order to satisfy the detachable connection between the widened side baffle 6 and the reinforcing block and support plate 2.

[0024] In this embodiment, a connecting sleeve 15 is hinged to one side surface of each of the bases 9, and the connecting sleeve 15 rotates in the vertical plane. The two ends of each of the second telescopic rods 16 are respectively threaded to the two corresponding connecting sleeves 15.

[0025] As shown in the figure, since the rollers 10 on the base 9 can abut against the surface of the bridge 1 or against the ground (which can be adjusted according to the height of the bridge 1), the angle between the two ends of the second telescopic rod 16 and the base 9 will be different. The connecting sleeve 15, which is hinged to the base 9, can flexibly adjust its angle to ensure that the two ends of the second telescopic rod 16 can apply a horizontal constraint force to the base 9 through the connecting sleeve 15.

[0026] In this embodiment, a third telescopic rod 17 is detachably connected between two adjacent bases 9. The third telescopic rod 17 is arranged along the length direction of the joint, and both ends of the third telescopic rod 17 are respectively threaded through the corresponding base 9 and connected to it.

[0027] As shown in the figure, the length of the third telescopic rod 17 can be adjusted to maintain the current state. The third telescopic rod 17 can further apply a restraining force to the base 9. When the third telescopic rod 17 is engaged with the two corresponding bases 9, the two support plates 2, the four first telescopic rods 8, the two second telescopic rods 16, and the two third telescopic rods 17 together form a stable connection, which further improves the stability of the support plate 2, effectively reduces the possibility of support loosening and formwork 5 displacement during concrete pouring, and ensures construction quality. At the same time, when moving the support plate 2 to the next joint, the overall structure is more stable and reliable.

[0028] In this embodiment, the surfaces of each pallet 2 that abut against the bridge 1 are covered with a flexible filler material 18, which may be rubber.

[0029] As shown in the figure, when the upper surfaces of the two support plates 2 respectively abut against the lower surfaces of the new bridge and the old bridge, the flexible filling material 18 on the upper surface of each support plate 2 simultaneously abuts against the lower surfaces of the new bridge and the old bridge, and fills the gap between the lower surfaces of the new bridge and the old bridge and the support plate 2 in an elastic deformation manner, effectively preventing the possibility of grout leakage during concrete pouring and ensuring construction quality.

[0030] In this embodiment, the template 5 is composed of multiple strip steel plates along the length of the joint, and the multiple steel plates are hinged to each other and can be folded.

[0031] As shown in the diagram, after the two support plates 2 are respectively abutted against and fixed to the lower surfaces of the new and old bridges, the construction workers place the formwork 5 on the upper surface of the two support plates 2 from the joint on the bridge 1. The formwork 5 is designed to be hinged and foldable, partly to reduce the footprint for easy transport, and partly to accommodate joints of different widths within a certain range, such as... Figure 6 As shown, folding a portion of the template 5 and placing it on the upper surface of the two support plates 2 will not affect the quality of the concrete at the joint.

[0032] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although the utility model has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made to it in form and detail without departing from the scope defined by the claims of this utility model.

Claims

1. A mobile bridge widening joint construction device, installed at the joint between a new bridge and an old bridge, comprising a support component abutting against the lower surface of the new bridge and the old bridge, and a supporting component installed on the lower surface of the support component, characterized in that: The supporting assembly includes two support plates (2) that are slidably connected to each other in a horizontal plane. The support plates (2) are arranged along the length direction of the joint and are symmetrically arranged about the length direction of the joint. Multiple sliders (3) are slidably passed through the two support plates (2), and the movement direction of each slider (3) is perpendicular to the length direction of the joint. The sliders (3) are arranged in an array along the length direction of the joint. The upper surfaces of the two support plates (2) are detachably connected to a template (5) and a side baffle (6). The template (5) is placed horizontally along the length direction of the joint. There are two side baffles (6), which are respectively arranged vertically along the length of the template (5). On both sides of the direction, the template (5), the two side baffles (6), and the new bridge and the old bridge together form a casting chamber (7); the support assembly includes multiple first telescopic rods (8) hinged to the lower surface of each support plate (2), each first telescopic rod (8) is symmetrically arranged about the length direction of the joint, each first telescopic rod (8) is provided with a base (9) at the end away from the support plate (2), and the surface of the base (9) is rotatably connected to multiple rollers (10) that abut against the surface of the corresponding bridge (1), and any two bases (9) symmetrically arranged about the joint are detachably connected to a horizontally arranged second telescopic rod (16).

2. The mobile bridge widening joint construction device according to claim 1, characterized in that: The upper surface of each tray (2) is provided with a positioning groove (11) that cooperates with the side baffle (6), and each tray (2) is detachably connected to the side baffle (6) with a reinforcing plate (12). The reinforcing plate (12) is vertically arranged and detachably connected to the side baffle (6), and the bottom of the reinforcing plate (12) abuts against the upper surface of the tray (2).

3. The mobile bridge widening joint construction device according to claim 2, characterized in that: Each of the reinforcing plates (12) has a limiting part (13) protruding from its surface at the bottom. Each of the support plates (2) has a limiting groove (14) on its upper surface that cooperates with the limiting part (13). The limiting groove (14) is arranged along the width direction of the joint. When the limiting part (13) cooperates with the limiting groove (14), the limiting part (13) can move a distance along the width direction of the joint.

4. The mobile bridge widening joint construction device according to claim 3, characterized in that: Each of the bases (9) has a connecting sleeve (15) hinged to one side surface, and the connecting sleeve (15) rotates in the vertical plane. The two ends of each of the second telescopic rods (16) are threadedly connected to the corresponding two connecting sleeves (15).

5. A mobile bridge widening joint construction device according to claim 4, characterized in that: A third telescopic rod (17) is detachably connected between two adjacent bases (9), and the third telescopic rod (17) is arranged along the length direction of the joint.

6. The mobile bridge widening joint construction device according to claim 1, characterized in that: The surfaces of each of the pallets (2) that abut against the bridge (1) are covered with flexible filler material (18).

7. The mobile bridge widening joint construction device according to claim 1, characterized in that: The template (5) is composed of multiple strip steel plates along the length of the joint, and the multiple steel plates are hinged to each other.

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