Temporary protection structure of overpass expressway bridge

Abstract

The invention discloses a temporary protection structure of an overpass expressway bridge, which relates to the technical field of bridge construction protection equipment and comprises two sections of bridge bodies, bridge piers, mounting I-shaped beams, fixed I-shaped beams, side wing protection plates, sliding plates, protection ladders, operating mechanisms, opening and closing mechanisms, unfolding mechanisms and lifting mechanisms, the two sliding plates are driven by an opening and closing mechanism to slide, the opening and closing mechanism is driven by an operating mechanism to work, the two protection ladders are driven by a lifting mechanism to move, and the two side wing protection plates are driven by an unfolding mechanism to move. The opening and closing mechanism can drive the sliding plates to be opened and closed in a reciprocating mode, when the sliding plates are combined, waste thrown down unintentionally during bridge deck construction can be effectively blocked, traffic under the bridge deck is prevented from being blocked, and the safety of pedestrians is also protected.

Description

Technical Field

[0001] The invention relates to the technical field of bridge construction protection equipment, and in particular to a temporary protection structure for a bridge over a highway. Background Art

[0002] Types of bridges over highways include overpasses, viaducts and separated flyovers. These types of bridges are widely used at the intersections of highways and other roads according to their different structures and uses. During the construction process, in order to ensure the safety of traffic under the bridge, protective devices are usually required to protect the road under the bridge.

[0003] In the prior art, the protective structure used in the construction of a bridge section over a highway with a gap between the two ends is mostly traditional scaffolding protection. Pillars are set on both sides of the road under the bridge, and then the scaffolding and beams are built on the pillars. The establishment of the scaffolding avoids the falling of construction objects or sand and stones on the bridge under construction. However, the traditional scaffolding protection will occupy the motor vehicle lane under the bridge during the construction process, and after the erection, the presence of the pillars reduces the driving area for non-motor vehicles, thereby causing regional congestion. In addition, the traditional scaffolding protection is greatly affected by wind and snow. When the wind and snow are strong, it will cause the scaffolding to collapse and cause safety hazards.

[0004] In order to solve the above problems, a temporary protective structure for a bridge over a highway is proposed. Summary of the invention

[0005] In view of the above-mentioned problems, the present invention provides a temporary protective structure for a bridge across a highway, which solves the problem that traditional scaffolding protection occupies the motor vehicle lane under the bridge during construction, and after erection, the presence of columns reduces the driving area for non-motor vehicles, thereby causing regional congestion, and traditional scaffolding protection is greatly affected by wind and snow. When the wind and snow are strong, the scaffolding may collapse, causing a safety hazard.

[0006] The technical scheme adopted by the present invention is: comprising a bridge body with a gap between two sections, bridge piers, an installation I-beam, a fixed I-beam, a plurality of fixed I-beams are fixedly arranged at the lower ends of the front and rear side walls of the two sections of the bridge body, the outer sides of the fixed I-beams located at the outermost sides are respectively provided with installation I-beams, a plurality of the installation I-beams are respectively fixedly connected to the lower ends of the bridge body, a plurality of bridge piers are respectively fixedly arranged at the lower ends of the plurality of the fixed I-beams and the plurality of the installation I-beams, and is characterized in that: it also comprises side wing protection plates, sliding plates, protection ladders, operating mechanisms, opening and closing mechanisms, unfolding mechanisms, and lifting mechanisms; Sliding plates are movably arranged under the two sections of the bridge body, and both sliding plates are driven to slide by an opening and closing mechanism; An operating mechanism is detachably provided above the gap, and the opening and closing mechanism is driven to work by the operating mechanism; Protective ladders are movably provided on the outer side walls of the two sections of the bridge body, and both of the protective ladders are driven and moved by the lifting mechanism; Side wing protection plates are movably provided on the outer sides of the two protection ladders, and the two side wing protection plates are driven to move by the unfolding mechanism; The two side wing protection plates are driven by the two lifting mechanisms to work; The unfolding mechanism is driven to work by the opening and closing mechanism.

[0007] Further, the opening and closing mechanism comprises a vertical rod, a horizontal rod, a first rectangular slider, a first connecting frame, a first connecting rod, a second connecting frame, and an L-shaped block; The lower transverse plates of the plurality of fixed I-beams and the upper ends of the lower transverse plates of the two installed I-beams on the same side are respectively fixed with transverse plates with L-shaped blocks; The outer walls of the vertical plates of the two adjacent L-shaped blocks are respectively provided with a card slot; The two side walls of the two sliding plates are respectively slidably disposed in the two adjacent card slots; Second connecting frames are fixedly provided at the middle of both sides of the upper ends of the two sliding plates; The first ends of the first connecting rods are rotatably disposed in the four second connecting frames respectively; The first ends of two vertical rods are detachably provided in the gap; A same horizontal rod is fixedly arranged between the second ends of the two vertical rods; The horizontal rods are slidably arranged on the upper ends of the two sliding plates respectively; A first rectangular through slot is respectively provided on the two vertical rods, and a first rectangular sliding block is slidably provided in the two first rectangular through slots; A same fixing rod is fixedly disposed between the two first rectangular sliding blocks, and first connecting frames are fixedly disposed on both ends of the fixing rod; The second ends of the four first connecting rods are respectively rotatably arranged in the first connecting frame close thereto; The fixing rod is driven to work by the operating mechanism.

[0008] Further, the operating mechanism comprises a mounting block, an operating disk, and a threaded rod; A common mounting block is detachably disposed between two adjacent bridge sections, and the mounting block is disposed in the gap; The mounting blocks are respectively arranged between the first ends of the two vertical rods; A threaded rod is rotatably provided in the mounting block; The threaded rod and the middle end of the fixed rod are threadedly arranged; The lower end of the threaded rod is rotatably connected to the middle portion of the upper end of the horizontal rod; An operating disk is fixedly provided at the upper end of the threaded rod, and the center of the operating disk is fixedly connected to the threaded rod; The operating panel is arranged above the mounting block.

[0009] Furthermore, a same debris collection bucket is provided below the two sliding plates, and two side walls of the debris collection bucket are detachably provided on the outer walls of the vertical plates of the two adjacent L-shaped blocks.

[0010] Further, the deployment mechanism comprises a third connecting frame, a second connecting rod, and a main shaft; Third connecting frames are respectively provided on both sides of the lower ends of the outer walls of the two sliding plates, and main shafts are respectively fixed on the outer sides of the four third connecting frames; The outer ends of the four main shafts are rotatably sleeved with the first ends of the second connecting rods respectively; The lower ends of the two side wing protection plates are respectively detachably rotatably arranged on the two sides of the lower transverse plates of the two I-beams installed adjacent thereto; The middle parts of both sides of the two side wing protection plates are respectively provided with first connecting shafts; The second ends of the four second connecting rods are respectively rotatably sleeved on the outer sides of the first connecting shafts adjacent thereto.

[0011] Furthermore, the lifting mechanism comprises a third connecting rod and a second rectangular sliding block; The four vertical plates for mounting the I-beams are respectively provided with second rectangular through grooves; Second rectangular sliding blocks are slidably arranged in the four rectangular through grooves respectively; The outer side walls of the four second rectangular sliding blocks are respectively detachably provided with the first ends of the connecting rods; The four connecting rods are respectively slidably arranged to penetrate the four second rectangular through slots; The second ends of the two connecting rods located on the same side are respectively fixedly connected to the two sides of the lower end of the protective ladder close thereto; A second connecting shaft is fixedly disposed on the upper ends of the front and rear side walls of the two protection ladders respectively; The first ends of the third connecting rods are rotatably sleeved on the four second connecting shafts respectively; A third connecting shaft is fixedly disposed on the upper ends of the front and rear side walls of the two side wing protection plates respectively; The second ends of the four third connecting rods are respectively rotatably sleeved on the outer sides of the third connecting shafts close thereto.

[0012] Furthermore, the middle parts of the lower ends of the two protective ladders are respectively provided with through holes for accompanying staff; A lifting work platform is provided on both sides of the through hole, and the two lifting work platforms on the same side are fixed to the lower end of the inner wall of the protective ladder close thereto; The four lifting work platforms are all movably arranged under the two bridge bodies.

[0013] Furthermore, the bottom edges of the two side wing protection plates are detachably provided with reflective strips and height limit signs.

[0014] Advantages of the present invention: The present invention adopts a method of hanging the equipment on the bridge body, avoiding the direct erection of a protective shed on the road to hinder traffic. The opening and closing mechanism of the present invention can drive the slide plate to open and close reciprocally. When the slide plates are combined, it can effectively block the waste accidentally thrown away during the bridge deck construction, avoid blocking the traffic under the bridge deck, and protect the safety of pedestrians on the bridge deck. At the same time, the opening and closing mechanism works synchronously to form an inclined guide plate to guide the slide plate, so that the waste accidentally thrown away during the construction can fall to the slide plate through the side wing protective plates. The lifting mechanism of the present invention can lower the protective ladder when the two slide plates are opened. The staff can descend to the top of the two slide plates through the protective ladder and clean the waste concentrated on the slide plates and collect it in the debris collection bucket under the two slide plates, which is convenient for recycling when the equipment is dismantled.

[0015] In addition to the objects, features and advantages described above, the present invention has other objects, features and advantages. The present invention will be further described in detail below with reference to the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings constituting a part of this application are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention and the bridge body; Figure 2 It is a side view of the overall structure of the present invention and the bridge body; Figure 3 This is a schematic diagram of the installation position of the debris collection bucket of the present invention; Figure 4 It is a schematic diagram of the working principle of the unfolding mechanism of the present invention; Figure 5 It is a schematic diagram of the installation position of the operating mechanism of the present invention; Figure 6 It is a schematic diagram of the working principle of the operating mechanism of the present invention; Figure 7 It is a schematic diagram of the working principle of the opening and closing mechanism of the present invention; Figure 8 It is a schematic diagram of the overall structure of the protective ladder of the present invention; Fig. 9 It is a schematic diagram of the positional relationship among the bridge body, the fixed I-beam, the installed I-beam and the bridge piers of the present invention; Fig.10 It is a schematic diagram of the overall structure of the present invention in an unfolded state.

[0018] Reference numerals: 1 is the bridge body, 2 is the bridge pier, 3 is the fixed I-beam, 4 is the installation I-beam, 5 is the operating panel, 6 is the side wing protection plate, 7 is the sliding plate, 8 is the second connecting rod, 9 is the third connecting rod, 10 is the protection ladder, 11 is the second connecting shaft, 12 is the first connecting rod, 13 is the threaded rod, 14 is the L-shaped block, 15 is the debris collection bucket, 16 is the second rectangular slider, 17 is the lifting workbench, 18 is the main shaft, 19 is the installation block, 20 is the vertical rod, 21 is the first rectangular slider, and 22 is the horizontal rod; 401 is a second rectangular through groove; 701 is a third connecting frame, 702 is a second connecting frame; 1001 is a through hole; 1401 is a card slot; 2001 is a first rectangular through groove; 2101 is a first connecting frame. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical solution and advantages of the invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0020] In the description of the invention, it is necessary to understand that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the 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 invention.

[0021] refer to Figures 1 to 10 A temporary protective structure for a bridge over a highway, comprising a bridge body 1 with a gap between two sections, a bridge pier 2, an installation I-beam 4, a fixed I-beam 3, a plurality of fixed I-beams 3 are fixedly installed at the lower ends of the front and rear side walls of the two sections of the bridge body 1, an installation I-beam 4 is respectively installed on the outer sides of the fixed I-beam 3 located at the outermost sides, a plurality of installation I-beams 4 are respectively fixedly connected to the lower end of the bridge body 1, a plurality of bridge piers 2 are respectively fixedly arranged at the lower ends of the plurality of fixed I-beams 3 and the plurality of installation I-beams 4, and further comprising a side wing protection plate 6, a sliding plate 7, a protection ladder 10, an operating mechanism, an opening and closing mechanism, an unfolding mechanism, and a lifting mechanism; Sliding plates 7 are movably installed under the two sections of the bridge body 1. The two sliding plates 7 are driven to slide by the opening and closing mechanism. The sliding plates 7 can slide back to back or towards each other under the drive of the opening and closing mechanism. When the two sliding plates 7 slide towards each other, a blockage is formed directly below the two sections of the bridge body 1. Debris accidentally thrown from the edge of the bridge body will pass through the side wing protection plate 6 described later and fall to the upper end of the sliding plate 7. When the two sliding plates 7 slide back to back, the distance between the two sliding plates 7 gradually increases and exposes the debris collection bucket 15 located below. At this time, the user can clean the debris on the two sliding plates 7 into the debris collection bucket 15 to avoid accumulation. An operating mechanism is detachably installed above the gap, and the opening and closing mechanism is driven to work by the operating mechanism; On the outer side walls of the two sections of the bridge body 1, protective ladders 10 are movably installed respectively. Both protective ladders 10 are driven by the lifting mechanism. The protective ladders 10 can slide up and down under the drive of the lifting mechanism. When the two protective ladders 10 slide upward to the highest point, they can provide a certain protection capability for the edge of the bridge body 1. When the two protective ladders 10 slide downward to the lowest point, the operator can climb down to the top of the sliding plate 7 through the protective ladders 10; Side wing protection plates 6 are movably installed on the outer sides of the two protection ladders 10. The two side wing protection plates 6 are driven to move by the deployment mechanism. When the side wing protection plates 6 are deployed, they can provide a larger interception area for both sides of the bridge. Debris that accidentally fall off the bridge body 1 will hit the side wing protection plates 6 on both sides and fall along the slope of the side wing protection plates 6 to the sliding plate 7 below. The two side wing protection plates 6 are driven by two lifting mechanisms to work; The unfolding mechanism is driven by the opening and closing mechanism.

[0022] The opening and closing mechanism comprises a vertical rod 20, a horizontal rod 22, a first rectangular slider 21, a first connecting frame 2101, a first connecting rod 12, a second connecting frame 702, and an L-shaped block 14; The lower cross plates of the several fixed I-beams 3 and the upper ends of the two lower cross plates of the two installed I-beams 4 on the same side are respectively fixed with cross plates with L-shaped blocks 14. The L-shaped blocks 14 remain on the adjacent I-beams 3 after the equipment is used, thereby ensuring the stability of the structure between the several adjacent I-beams 3; The outer walls of the vertical plates of two adjacent L-shaped blocks 14 are respectively provided with a slot 1401; The two side walls of the two sliding plates 7 are respectively slidably installed in two adjacent slots 1401; Second connecting frames 702 are fixedly installed at the middle of both sides of the upper ends of the two sliding plates 7; The first ends of the first connecting rods 12 are rotatably mounted in the four second connecting frames 702 respectively; The first ends of two vertical rods 20 are detachably mounted in the gap; A same horizontal rod 22 is fixedly installed between the second ends of the two vertical rods 20; The horizontal rods 22 are slidably disposed on the upper ends of the two sliding plates 7; The two vertical rods 20 are respectively provided with first rectangular through slots 2001, and first rectangular sliding blocks 21 are respectively slidably installed in the two first rectangular through slots 2001; A same fixing rod is fixedly installed between the two first rectangular sliding blocks 21, and first connecting frames 2101 are fixedly installed on both ends of the fixing rod; The second ends of the four first connecting rods 12 are respectively rotatably disposed in the first connecting frame 2101 adjacent thereto; The fixing rod is driven by the operating mechanism, and the fixing rod begins to slide up and down under the drive of the operating mechanism, and in the process of sliding, it drives the first rectangular sliding blocks 21 on both sides to slide up and down along the first rectangular through grooves 2001 on both sides respectively. The cooperation between the first rectangular sliding blocks 21 and the first rectangular through grooves 2001 ensures the sliding trajectory of the fixing rod and ensures that it will not deviate and fall off during the sliding process. In the process of sliding up and down, the fixing rod drives the first connecting rods 12 on both ends to deflect up and down respectively. When the fixing rod slides downward, the two first connecting rods 12 on the same side begin to deflect downward, and the sliding plates 7 matched therewith begin to slide outward. At this time, the two sliding plates 7 begin to slide back to back. Since the cooperation between the sliding plates 7 and the card slots 1401 can ensure the sliding trajectory of the sliding plates 7 and ensure that they will not fall off during the sliding process, when the fixing rod slides upward, the two first connecting rods 12 on the same side begin to deflect upward, and the two sliding plates 7 begin to slide toward each other, finally achieving closure and blocking the lower part of the bridge body 1.

[0023] The operating mechanism comprises a mounting block 19, an operating panel 5, and a threaded rod 13; The same mounting block 19 is detachably mounted between two adjacent bridge sections, and the mounting block 19 is arranged in the gap; The mounting blocks 19 are respectively disposed between the first ends of the two vertical rods 20; A threaded rod 13 is rotatably installed in the mounting block 19; The threaded rod 13 is threadedly connected to the middle end of the fixed rod; The lower end of the threaded rod 13 is rotatably connected to the middle portion of the upper end of the horizontal rod 22; The upper end of the threaded rod 13 is fixedly mounted with an operating panel 5, and the center of the operating panel 5 is fixedly connected to the threaded rod 13; The operating panel 5 is arranged above the mounting block 19. Figure 5The mounting block 19 is fixed between two adjacent bridge bodies 1 by screws to facilitate subsequent removal. The user drives the threaded rod 13 to start rotating by rotating the operating disk 13. The threaded rod 13 can drive the fixed rod with a threaded setting and a determined movable direction to start sliding up and down by rotating.

[0024] The same debris collection bucket 15 is installed below the two sliding plates 7, and the two side walls of the debris collection bucket 15 are detachably arranged on the outer walls of the vertical plates of the two adjacent L-shaped blocks 14. When the two sliding plates 7 slide back to back under the drive of the opening and closing mechanism, the distance between the two sliding plates 7 begins to increase. At this time, the debris collection bucket 15 located below the two sliding plates 7 can be completely exposed, so that the debris located on the sliding plates 7 can be conveniently processed and collected in a centralized manner.

[0025] The unfolding mechanism comprises a third connecting frame 701, a second connecting rod 8, and a main shaft 18; The third connecting frames 701 are respectively installed on both sides of the lower ends of the outer walls of the two sliding plates 7, and the outer sides of the four third connecting frames 701 are respectively fixedly installed with the main shafts 18; The outer ends of the four main shafts 18 are respectively rotatably sleeved with the first ends of the second connecting rods 8; The lower ends of the two side wing protection plates 6 are respectively detachably rotatably arranged on the two sides of the lower transverse plates of the two I-beams 4 installed thereto; The first connecting shafts are respectively installed at the middle of both sides of the two side wing protection plates 6; The second ends of the four second connecting rods 8 are respectively rotatably sleeved on the outer sides of the first connecting shafts close thereto, Figure 4 When the two sliding plates 7 begin to slide outward, the second connecting rods 8 on both sides of the sliding plates 7 begin to deflect downward. During the downward deflection, the two second connecting rods 8 will respectively drive the side wing protection plates 6 on both sides to rotate downward. When the two sliding plates 7 slide toward each other, the two side wing protection plates 6 will respectively rotate upward under the drive of the two second connecting rods 8 cooperating therewith to achieve protection. When the two side wing protection plates 6 rotate downward, a certain amount of activity space is provided for the lowering of the protection ladder 10, which facilitates the operator to enter the top of the sliding plate 7 through the protection ladder 10.

[0026] The lifting mechanism comprises a third connecting rod 9 and a second rectangular sliding block 16; The four vertical plates for mounting the I-beams 4 are respectively provided with second rectangular through slots 401; The second rectangular sliding blocks 16 are slidably installed in the four rectangular through slots 401 respectively; The first ends of the connecting rods are detachably mounted on the outer side walls of the four second rectangular sliding blocks 16; The four connecting rods are respectively slidably arranged to penetrate the four second rectangular through slots 401; The second ends of the two connecting rods on the same side are respectively fixedly connected to the two sides of the lower end of the protective ladder 10 close thereto; The upper ends of the front and rear side walls of the two protection ladders 10 are respectively fixedly mounted with second connecting shafts 11; The first ends of the third connecting rods 9 are rotatably mounted on the four second connecting shafts 11 respectively; The upper ends of the front and rear side walls of the two side wing protection plates 6 are respectively fixedly mounted with third connecting shafts; The second ends of the four third connecting rods 9 are respectively rotatably sleeved on the outer sides of the third connecting shafts close thereto, Figure 4 When the two side guard plates 6 rotate downward, the two third connecting rods 9 begin to deflect downward. During the downward deflection, the two third connecting rods 9 pull the protective ladder 10 downward through the second connecting shafts 11 on both sides. At this time, the two connecting rods fixedly connected to the protective ladder also begin to slide downward under the drive of the second rectangular sliders 16 on both sides. The cooperation between the second rectangular sliders 16 on both sides and the second rectangular through grooves 401 on both sides ensures the sliding trajectory of the protective ladder 10 and ensures that it will not deviate and fall off during the sliding process. When the side guard plates 6 on both sides rotate upward, the protective ladder 10 rises upward to form a guardrail to protect the construction workers on both sides of the bridge body.

[0027] The middle parts of the lower ends of the two protection ladders 10 are respectively provided with through holes 1001 for accompanying staff; Lifting work platforms 17 are installed on both sides of the through hole, and the two lifting work platforms 17 on the same side are fixed to the lower end of the inner wall of the protective ladder 10 close thereto; The four lifting platforms 17 are movably arranged under the two bridge bodies 1. When the guard ladders 10 on both sides slide downward to the lowest point, the staff on the bridge deck can enter the top of the sliding plate 7 through the guard ladders 10 through the through holes 1001. At this time, since the sliding plates 7 on both sides are just in a separated state, the staff on both sides can clean the debris on the two sliding plates 7 into the debris cleaning bucket 15 located below the middle. When construction is needed on the bottom of the bridge deck, since the two lifting platforms 17 have slid to the bottom with the guard ladders 10, the staff can move to the upper ends of the lifting platforms 17 on both sides. As the guard ladders 10 rise to a high place, the staff are driven by the lifting platforms and just move to a position close to the bottom of the bridge deck, avoiding the use of escalators at high altitudes again, which has a higher safety factor.

[0028] The bottom edges of the two side guard plates can be removably installed with reflective strips and height limit signs, which are used to remind pedestrians or vehicles that they are about to enter the construction area.

[0029] Implementation method of the present invention: Before using this equipment, it must be installed with the bridge to be constructed. In the early stage of bridge construction, several installation I-beams 4 and several fixed I-beams 3 need to be installed with L-shaped blocks 14 on both sides respectively. The installation method can be achieved by using screws; After the L-shaped block 14 is installed, the two sliding plates 7 are respectively inserted into the slots 1401 located between the outer walls of the vertical plates of the L-shaped block 14, and then the two vertical rods 20 are respectively sent down from the gap between the two sections of the bridge body 1, and the upper ends of the vertical rods 20 are respectively fixed in the gap by a number of screws. Since the fixed rod and the first rectangular sliders 21 on both sides of the fixed rod are integrated, the threaded rod 13 connected to the fixed rod through the thread is also positioned along with the mounting block 19, and the mounting block 19 is also installed in the gap by screws. At this time, the opening and closing mechanism is assembled by connecting the first connecting rod 12 to the sliding plate 7 and the fixed rod respectively. After the opening and closing mechanism is assembled, the two side wing protection plates 6 are respectively hinged to the outer ends of the lower horizontal plates of the two I-beams 4 on the same side through rivets, and the first connecting shafts in the middle of both sides of the side wing protection plates 6 are respectively hinged to the two outer side walls of the sliding plate 7 on the same side through the second connecting rods. At this time, the unfolding mechanism is assembled; Connect the second rectangular sliders in the two installation I-beams 4 on the same side to the connecting rods through screws respectively. The connecting rods and the protective ladder 10 are fixed. At this time, the lifting mechanism is assembled; After the equipment is assembled, the operating disk 5 is rotated to flip the side wing protection plates on the outside of the two sections of the bridge body 1 upward, and the two sliding plates 7 slide toward each other and finally touch each other, and the protection ladders 10 on both sides slide upward to the highest point. At this time, it is the normal use state of the equipment. The construction workers on the bridge body 1 can avoid falling off under the protection of the protection ladders 10, and the safety factor is enhanced. At the same time, if the debris on the bridge surface, such as tools, sand and stones, are accidentally thrown under the bridge, the side wing protection plates 6 on both sides will block it, and the blocked debris will fall to the upper ends of the two sliding plates 7; When the sliding plate 7 is to be cleaned or the lower end of the bridge deck 1 is to be constructed, the operator on the bridge deck starts to rotate the operating disk 5 in the opposite direction. At this time, the protective ladders 10 on both sides are lowered. For safety reasons, the workers on the bridge deck should leave the two sides of the bridge body in time. The workers on both sides climb to the upper ends of the two sliding plates 7 through the protective ladders 10. As the protective ladders 10 are lowered, the two sliding plates 7 slide back to back, and a gap flows out between the two sliding plates 7 as they slide back to back. The debris collection bucket 15 below the gap is exposed at this time, and the workers clean and collect the debris on the two sliding plates 7 into the debris collection bucket 15. At this time, the construction workers who need to work on the lower end of the bridge deck 1 can move to the upper section of the lifting workbench 17. Again, as the operating disk 5 is rotated, the lifting workbench 17 will slide upward with the protective ladder 10, and finally slide to the lower end of the bridge body 1. At this time, construction can be carried out on the bridge body surface and the ground at the same time, and the construction efficiency is faster.

[0030] The present invention adopts a method of hanging the equipment on the bridge body, avoiding the direct erection of a protective shed on the road to hinder traffic. The opening and closing mechanism of the present invention can drive the slide plate to open and close reciprocally. When the slide plates are combined, it can effectively block the waste accidentally thrown away during the bridge deck construction, avoid blocking the traffic under the bridge deck, and protect the safety of pedestrians on the bridge deck. At the same time, the opening and closing mechanism works synchronously to form an inclined guide plate to guide the slide plate, so that the waste accidentally discarded during the construction can fall to the slide plate through the side wing protective plates. The lifting mechanism of the present invention can lower the protective ladder when the two slide plates are opened. The staff can descend to the top of the two slide plates through the protective ladder and clean the waste concentrated on the slide plates and collect them in the debris collection bucket under the two slide plates, which is convenient for recycling when the equipment is dismantled.

[0031] 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 principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A temporary protective structure for a bridge over a highway, comprising a bridge body (1) with a gap between two sections, bridge piers (2), an installation I-beam (4), and a fixed I-beam (3), wherein a plurality of fixed I-beams (3) are fixedly provided at the lower ends of the front and rear side walls of the two sections of the bridge body (1), and an installation I-beam (4) is provided on the outer sides of the fixed I-beams (3) located at the outermost sides, and the plurality of installation I-beams (4) are respectively fixedly connected to the lower ends of the bridge body (1), and a plurality of bridge piers (2) are respectively fixedly provided at the lower ends of the plurality of fixed I-beams (3) and the plurality of installation I-beams (4), wherein the structure is characterized in that: It also includes side wing protection plates (6), sliding plates (7), protection ladders (10), operating mechanisms, opening and closing mechanisms, unfolding mechanisms, and lifting mechanisms; Sliding plates (7) are movably provided under the two sections of the bridge body (1), respectively, and the two sliding plates (7) are driven to slide by an opening and closing mechanism; An operating mechanism is detachably provided above the gap, and the opening and closing mechanism is driven to work by the operating mechanism; Protective ladders (10) are movably provided on the outer side walls of the two sections of the bridge body (1), and the two protective ladders (10) are both driven and moved by a lifting mechanism; Side wing protection plates (6) are movably provided on the outer sides of the two protection ladders (10), and the two side wing protection plates (6) are both driven to move by a deployment mechanism; The two side wing protection plates (6) are driven by the two lifting mechanisms to work; The unfolding mechanism is driven to work by the opening and closing mechanism.

2. The temporary protective structure for a bridge over a highway according to claim 1 is characterized by: The opening and closing mechanism comprises a vertical rod (20), a horizontal rod (22), a first rectangular sliding block (21), a first connecting frame (2101), a first connecting rod (12), a second connecting frame (702), and an L-shaped block (14); The lower transverse plates of the plurality of fixed I-beams (3) and the lower transverse plates of the two installation I-beams (4) located on the same side are respectively fixed with transverse plates having L-shaped blocks (14) on both sides of the upper ends thereof; The outer walls of the vertical plates of two adjacent L-shaped blocks (14) are respectively provided with a clamping groove (1401); The two side walls of the two sliding plates (7) are respectively slidably disposed in the two adjacent slots (1401); Second connecting frames (702) are fixedly provided at the middle parts of both sides of the upper ends of the two sliding plates (7); The first ends of the first connecting rods (12) are rotatably disposed in the four second connecting frames (702); The first ends of two vertical rods (20) are detachably provided in the gap; A same horizontal rod (22) is fixedly disposed between the second ends of the two vertical rods (20); The horizontal rods (22) are slidably disposed on the upper ends of the two sliding plates (7); The two vertical rods (20) are respectively provided with a first rectangular through slot (2001), and a first rectangular sliding block (21) is slidably provided in the two first rectangular through slots (2001); A same fixing rod is fixedly arranged between the two first rectangular sliding blocks (21), and first connecting frames (2101) are respectively fixedly arranged on both sides of both ends of the fixing rod; The second ends of the four first connecting rods (12) are respectively rotatably disposed in the first connecting frame (2101) adjacent thereto; The fixing rod is driven to work by the operating mechanism.

3. The temporary protective structure for a bridge over a highway according to claim 2 is characterized by: The operating mechanism comprises a mounting block (19), an operating panel (5), and a threaded rod (13); A common mounting block (19) is detachably disposed between two adjacent bridge sections, and the mounting block (19) is disposed within the gap; The mounting blocks (19) are respectively arranged between the first ends of the two vertical rods (20); A threaded rod (13) is rotatably provided inside the mounting block (19); The threaded rod (13) and the middle end of the fixing rod are threadedly arranged to penetrate each other; The lower end of the threaded rod (13) is rotatably connected to the middle portion of the upper end of the horizontal rod (22); An operating disk (5) is fixedly provided at the upper end of the threaded rod (13), and the center of the operating disk (5) is fixedly connected to the threaded rod (13); The operating panel (5) is arranged above the mounting block (19).

4. The temporary protective structure for a bridge over a highway according to claim 2 is characterized by: A common debris collection bucket (15) is provided below the two sliding plates (7), and two side walls of the debris collection bucket (15) are detachably provided on the outer walls of the vertical plates of the two adjacent L-shaped blocks (14).

5. The temporary protective structure for a bridge over a highway according to claim 2 is characterized by: The unfolding mechanism comprises a third connecting frame (701), a second connecting rod (8), and a main shaft (18); Third connecting frames (701) are respectively provided on both sides of the lower ends of the outer walls of the two sliding plates (7), and main shafts (18) are respectively fixedly provided on the outer sides of the four third connecting frames (701); The outer ends of the four main shafts (18) are respectively rotatably sleeved with the first end of the second connecting rod (8); The lower ends of the two side wing protection plates (6) are respectively detachably rotatably arranged on the two sides of the lower transverse plates of the two I-beams (4) installed adjacent thereto; A first connecting shaft is respectively provided at the middle of both sides of the two side wing protection plates (6); The second ends of the four second connecting rods (8) are respectively rotatably sleeved on the outer sides of the first connecting shafts adjacent thereto.

6. The temporary protective structure for a bridge over a highway according to claim 5 is characterized by: The lifting mechanism comprises a third connecting rod (9) and a second rectangular sliding block (16); The four vertical plates for mounting the I-beams (4) are respectively provided with second rectangular through grooves (401); Second rectangular sliding blocks (16) are slidably disposed in the four rectangular through grooves (401) respectively; The outer side walls of the four second rectangular sliding blocks (16) are respectively provided with first ends of connecting rods which are detachable; The four connecting rods are respectively slidably arranged to penetrate the four second rectangular through slots (401); The second ends of the two connecting rods located on the same side are respectively fixedly connected to both sides of the lower end of the protective ladder (10) adjacent thereto; A second connecting shaft (11) is fixedly disposed on the upper ends of the front and rear side walls of the two protective ladders (10); The first ends of the third connecting rods (9) are rotatably sleeved on the four second connecting shafts (11); A third connecting shaft is fixedly disposed on the upper ends of the front and rear side walls of the two side wing protection plates (6); The second ends of the four third connecting rods (9) are respectively rotatably sleeved on the outer sides of the third connecting shafts adjacent thereto.

7. The temporary protective structure for a bridge over a highway according to claim 6 is characterized by: The middle parts of the lower ends of the two protection ladders (10) are respectively provided with through holes (1001) for accompanying staff; A lifting work platform (17) is provided on both sides of the through hole, and the two lifting work platforms (17) located on the same side are fixed to the lower end of the inner wall of the protective ladder (10) adjacent thereto; The four lifting work platforms (17) are all movably arranged below the two bridge bodies (1).

8. The temporary protective structure for a bridge over a highway according to claim 1 is characterized by: The bottom edges of the two side wing protection plates are both detachably provided with reflective strips and height limit signs.

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