Fabricated protective shed of cast-in-place beam overpass type door opening

Abstract

The utility model relates to the technical field of construction protective devices, and discloses a cast-in-place beam overpass type door opening assembly type protective shed which comprises a plurality of protective plates located above an existing road and further comprises a plurality of bearing columns installed on the two sides of the existing road, and bearing seats are arranged at the upper ends of the bearing columns. The plurality of protection plates are installed between the upper side faces of the two bearing seats, and the side faces of the bearing seats are provided with a plurality of first inserting blocks. A plurality of bearing columns are arranged, the bearing seats are inserted into the first inserting grooves through the first inserting blocks to be installed at the upper ends of the bearing columns, the protection plate is inserted into the second inserting grooves through the second inserting blocks to be installed, and the two bearing seats are limited by the second inserting blocks, so that the bearing seats are not prone to falling off due to the limitation of the second inserting blocks. And the whole protective shed is mounted in an assembling mode, the mounting efficiency of the protective shed is improved, the device is suitable for different bridge construction modes, and the applicability of the whole device is improved.

Description

Technical Field

[0001] This utility model relates to the technical field of construction protection devices, specifically a prefabricated protective shed for a spanned doorway on a cast-in-place beam. Background Technology

[0002] Bridge construction is divided into cast-in-place and precast methods. When constructing bridges on existing provincial highways and other roads using either method, it is necessary to build an overpass portal on the existing road. Furthermore, protective canopies need to be installed under the bridge during the construction of portals and cast-in-place bridges to ensure the normal operation of the existing road underneath.

[0003] To improve construction safety at bridge overpass portal locations, existing technologies have made numerous improvements to the protective canopy for overpass portals. For example, patent publication number CN219862399U discloses a prefabricated protective canopy for precast beam overpass portals. This canopy includes a crossbeam, hangers, and protective canopy panels. The crossbeam spans the wet joint of the precast beam slab, resting on both ends of the precast beam slab. The upper end of the hangers is locked to the crossbeam, and the lower end suspends the protective canopy panels. The protective canopy panels extend across the bridge deck on both sides. Several protective canopy panels are seamlessly connected along the wet joint of the precast beam slab to form blocks. The slope of each block of protective canopy panels is consistent with the cross slope of the crossed road. The prefabricated protective canopy is constructed by connecting finely rolled threaded steel hangers before laying distribution beams and formwork. During the manufacturing process, materials are prefabricated in the factory and then transported to the site for assembly. This method allows for rapid installation, minimal impact on traffic, and easy control of height restrictions. It is suitable for overpass bridges with critical height limits, meeting the requirements of refined and standardized construction, ensuring safety and environmental protection, convenience, and superior performance.

[0004] The aforementioned patents have significant beneficial effects, but in practical application, they still have the following shortcomings:

[0005] The aforementioned comparative document describes installing hangers on the underside of precast beams to suspend protective canopies for the existing road below. However, in reality, bridge construction involves both precast and cast-in-place methods. The aforementioned comparative document applies to precast bridge construction. For cast-in-place bridge archway construction, the lack of suspension points above the existing road makes it unsuitable for protecting archways spanning cast-in-place beams. Therefore, there is an urgent need in this field to improve the prefabricated protective canopy for archways spanning cast-in-place beams to address the shortcomings of the existing technology. Utility Model Content

[0006] To address the shortcomings of existing technologies, this utility model provides a prefabricated protective shed for a span-type portal on a cast-in-place beam. By assembling the entire protective shed, the installation efficiency is improved, and it is applicable to different bridge construction methods, thus enhancing the overall applicability of the device.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a prefabricated protective canopy for a cast-in-place beam spanning a doorway, comprising several protective panels located above an existing road, and several load-bearing columns installed on both sides of the existing road. Each load-bearing column has a load-bearing seat at its upper end, and the protective panels are installed between the upper sides of two load-bearing seats. Each load-bearing seat has several first insertion blocks on its side. Each load-bearing column has a first insertion groove at its upper end that matches the first insertion block. The first insertion groove penetrates the side of the load-bearing column away from the existing road. Each protective panel has symmetrical second insertion blocks on its lower surface, and each load-bearing seat has a second insertion groove penetrating both ends and its upper side.

[0008] Preferably, an L-shaped sliding rod is fixedly connected to the upper side of the first plug block, and sliding grooves adapted to the sliding rod are opened through both ends of the bearing seat. An adjustment groove communicating with the sliding groove is opened on one side of the bearing seat. A limiting bolt with one end threadedly connected to one end of the sliding rod passes through the adjustment groove, and a first limiting nut is threadedly connected to the side of the limiting bolt.

[0009] Preferably, each of the protective plates has two symmetrical movable slots on its lower surface that are adapted to the upper end of the second plug-in block. A first adjusting rod extending to the outside is rotatably connected in the movable slot. The first adjusting rod passes through the second plug-in block and is threadedly connected to the second plug-in block. A second limiting nut is threadedly connected to the side of the first adjusting rod.

[0010] Preferably, the second insertion slot is provided with detachable fixing plates at both ends, and a second adjusting rod is threaded through the fixing plate and threadedly connected to it. One end of the second adjusting rod abuts against the side of the second insertion block located at both ends of the second insertion slot, and a third limiting nut is threadedly connected to the side of the second adjusting rod.

[0011] Preferably, the opposite sidewalls of the second insertion slot are provided with limiting grooves adapted to the fixing plate, and one of the limiting grooves penetrates the side of the bearing seat.

[0012] Preferably, the protective plate has an inverted V-shaped cross-section, and each protective plate is prefabricated.

[0013] Preferably, both ends of the protective plate are provided with rain shields, and the rain shields extend beyond the support base to the side away from the existing road.

[0014] To address the shortcomings of existing technologies, this utility model provides a prefabricated protective shed for a cast-in-place beam spanning a doorway, overcoming the deficiencies of existing technologies. The beneficial effects of this utility model are as follows:

[0015] 1. In this utility model, several bearing columns are set up, and the bearing seat is installed on the upper end of several bearing columns by inserting a first plug-in block into a first plug-in groove. The protective plate is installed by inserting a second plug-in block into a second plug-in groove. The two bearing seats are restricted by several second plug-in blocks, so that the first plug-in block will not detach from the first plug-in groove. The whole protective shed is installed by assembly, which improves the installation efficiency of the protective shed and is applicable to different bridge construction methods, thus improving the applicability of the whole device.

[0016] 2. In this utility model, by setting a sliding rod and a sliding groove, the position of the first plug-in block can be adjusted along the direction of the bearing seat to prevent the installation position of the bearing column from shifting, which would cause the first plug-in block to be unable to be inserted into the first plug-in groove. With the first limiting nut, the position of the first plug-in block can be limited and fixed, thereby improving the applicability of the overall device and the flexibility of on-site installation.

[0017] 3. In this utility model, by setting a first adjusting rod, when there is a deviation between the position of the second plug block and the second plug slot, the position of the second plug block can be adjusted by the first adjusting rod, and the position of the second plug block can be limited by the second limiting nut, thereby improving the flexibility of assembling the protective plate.

[0018] 4. In this utility model, by setting a second adjusting rod and a detachable fixing plate, the second adjusting rod is rotated to squeeze several protective plates, reducing the gap between the protective plates. At the same time, the third limiting nut is tightened to limit the position of the second adjusting rod, preventing the protective plates from shifting and improving the protective safety of the protective plates.

[0019] Other features and advantages of this invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of this invention can be realized and obtained by means of the structures pointed out in the description, claims, and drawings. Attached Figure Description

[0020] The accompanying drawings are provided to further understand the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation thereof.

[0021] Figure 1 This is a schematic diagram of the structure of the present invention after it has been installed as a whole on an existing road;

[0022] Figure 2 This is a schematic diagram of the structure of several protective plates after installation in this utility model;

[0023] Figure 3 This is a partial cross-sectional view of the protective plate in this utility model.

[0024] Figure 4 This is a partial cross-sectional structural diagram of the bearing seat in this utility model;

[0025] Figure 5 for Figure 3 Enlarged structural diagram at point A in the middle.

[0026] In the diagram: 1. Protective plate; 2. Existing road; 3. Bearing column; 4. Bearing seat; 5. First plug-in block; 6. First plug-in groove; 7. Second plug-in block; 8. Second plug-in groove; 9. Sliding rod; 10. Sliding groove; 11. Adjusting groove; 12. Limiting bolt; 13. First limiting nut; 14. Moving groove; 15. First adjusting rod; 16. Second limiting nut; 17. Fixing plate; 18. Second adjusting rod; 19. Third limiting nut; 20. Limiting groove; 21. Rain shield. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0028] Example 1

[0029] Please see Figures 1-5 A prefabricated protective canopy for a cast-in-place beam spanning a doorway includes several protective panels 1 located above an existing road 2, and several load-bearing columns 3 installed on both sides of the existing road 2. Each load-bearing column 3 has a load-bearing seat 4 at its upper end. Several protective panels 1 are installed between the upper sides of two load-bearing seats 4. Each load-bearing seat 4 has several first insertion blocks 5 on its side. Each load-bearing column 3 has a first insertion groove 6 at its upper end that matches the first insertion block 5. The first insertion groove 6 penetrates the side of the load-bearing column 3 away from the existing road 2. Each protective panel 1 has symmetrical second insertion blocks 7 on its lower surface. Each load-bearing seat 4 has a second insertion groove 8 penetrating both ends and the upper side of the load-bearing seat 4. The protective panel 1 has an inverted V-shaped cross section. Each protective panel 1 is prefabricated. Each end of the protective panel 1 has a rain shelter 21. The rain shelter 21 extends beyond the side of the load-bearing seat 4 away from the existing road 2.

[0030] The specific implementation method in this embodiment is as follows: When it is necessary to protect the cast-in-place overpass archway, the spacing between several load-bearing columns 3 is determined. Several load-bearing columns 3 are inserted into both sides of the existing road 2 using equipment. The load-bearing seats 4 are lifted by lifting equipment and inserted into the first insertion slot 6 through the first insertion block 5, wherein the first insertion block 5 has an inverted T-shaped cross section. After the two load-bearing seats 4 are installed, the prefabricated protective plate 1 is lifted by lifting equipment and inserted into the second insertion slot 8 through the second insertion block 7, wherein the second insertion block 7 has an inverted T-shaped cross section. Several protective plates 1 are installed on the two load-bearing seats 4 in sequence, with the sides of two adjacent protective plates 1 tightly abutting each other. If there are Waterproofing is required at the junction of the two protective plates 1. Due to the restriction of several second plug-in blocks 7, the first plug-in block 5 will not detach from the first plug-in slot 6. The entire protective shed is installed by assembly, which improves the installation efficiency of the protective shed. The protective shed can be disassembled and reused after use. The protective plate 1 is inverted V-shaped. Debris or rainwater falling during construction slides to the side of the existing road 2, preventing debris from accumulating on the protective plate 1. The rain shield 21 is set to guide rainwater to the side of the existing road 2, preventing rainwater from entering the interior of the bearing 4 and making it difficult to disassemble the entire device later.

[0031] Example 2

[0032] Please see Figure 3 and Figure 4 This embodiment includes the above embodiment, and further includes: an L-shaped sliding rod 9 is fixedly connected to the upper side of the first plug block 5; sliding grooves 10 adapted to the sliding rod 9 are opened through both ends of the bearing seat 4; an adjustment groove 11 communicating with the sliding groove 10 is opened on one side of the bearing seat 4; a limiting bolt 12 with one end threadedly connected to one end of the sliding rod 9 is passed through the adjustment groove 11; and a first limiting nut 13 is threadedly connected to the side of the limiting bolt 12.

[0033] The specific implementation method in this embodiment is as follows: By setting the sliding rod 9 and the sliding groove 10, the position of the first plug-in block 5 can be adjusted along the direction of the bearing seat 4 to prevent the installation position of the bearing column 3 from shifting, which would cause the first plug-in block 5 to be unable to be inserted into the first plug-in groove 6. When it is necessary to adjust the position of the first plug-in block 5, the first plug-in block 5 and the sliding rod 9 move in the sliding groove 10. When the position of the first plug-in block 5 corresponds to the position of the first plug-in groove 6, one end of the limiting bolt 12 passes through the adjusting groove 11 and is threadedly connected to the threaded hole opened at one end of the sliding rod 9. The first limiting nut 13 is tightened to fix the position of the first plug-in block 5, thereby improving the applicability of the overall device and the flexibility of on-site installation.

[0034] Implementation Three

[0035] Please see Figure 4 and Figure 5 This embodiment includes all the above embodiments, and further includes: two symmetrical movable slots 14 adapted to the upper end of the second plug-in block 7 are opened on the lower surface of each protective plate 1. A first adjusting rod 15 extending to the outside is rotatably connected in the movable slot 14. The first adjusting rod 15 passes through the second plug-in block 7 and is threadedly connected to the second plug-in block 7. A second limiting nut 16 is threadedly connected to the side of the first adjusting rod 15. The two ends of the second plug-in slot 8 are provided with detachable fixing plates 17. The upper tube of the fixing plate 17 passes through and is threadedly connected to the second adjusting rod 18. One end of the second adjusting rod 18 abuts against the side of the second plug-in block 7 located at both ends of the second plug-in slot 8. A third limiting nut 19 is threadedly connected to the side of the second adjusting rod 18. The opposite side walls of the second plug-in slot 8 are provided with limiting slots 20 adapted to the fixing plate 17. One limiting slot 20 passes through the side of the bearing seat 4.

[0036] In this embodiment, when there is a deviation between the second insertion block 7 on the protective plate 1 and the second insertion slot 8 on the two bearing seats 4, the position of the second insertion block 7 can be adjusted by rotating the first adjusting rod 15, which drives the second insertion block 7 to slide within the moving slot 14. The position of the second insertion block 7 can be limited by tightening the second limiting nut 16, thereby limiting the position of the second insertion block 7. This improves the flexibility of assembling the protective plate 1. After several protective plates 1 are installed... Then, the fixing plate 17 is inserted into the limiting groove 20, and the second adjusting rod 18 is threaded into the threaded hole on the fixing plate 17. The second adjusting rod 18 is rotated, and one end of the two second adjusting rods 18 abuts against the side of the second plug-in block 7 located at both ends of the second plug-in groove 8. The second adjusting rod 18 is tightened to squeeze the several protective plates 1, reducing the gap between the several protective plates 1. At the same time, the third limiting nut 19 is tightened to limit the position of the second adjusting rod 18, preventing the protective plates 1 from shifting and improving the protective safety of the protective plates 1.

[0037] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A prefabricated protective shed for a cast-in-place beam overpass type door, comprising a plurality of protective plates (1) located above an existing road (2), characterized in that, It also includes several load-bearing pillars (3) installed on both sides of the existing road (2), with a load-bearing seat (4) at the upper end of each of the load-bearing pillars (3), and several protective plates (1) installed between the upper sides of two load-bearing seats (4). The side of each load-bearing seat (4) is provided with several first plug-in blocks (5), and each load-bearing pillar (3) has a first plug-in groove (6) adapted to the first plug-in block (5) at the upper end. The first plug-in groove (6) penetrates the side of the load-bearing pillar (3) away from the existing road (2). Each protective plate (1) has a symmetrical second plug-in block (7) on its lower surface, and each load-bearing seat (4) has a second plug-in groove (8) penetrating both ends and the upper side of the load-bearing seat (4).

2. The prefabricated protective shed for cast-in-place beam door hole according to claim 1, characterized in that, An L-shaped sliding rod (9) is fixedly connected to the upper side of the first plug-in block (5). The bearing seat (4) has sliding grooves (10) that are adapted to the sliding rod (9) through both ends. An adjustment groove (11) that communicates with the sliding groove (10) is opened on one side of the bearing seat (4). A limiting bolt (12) with one end threaded to one end of the sliding rod (9) passes through the adjustment groove (11). A first limiting nut (13) is threaded to the side of the limiting bolt (12).

3. The prefabricated protective shed for cast-in-place beam door hole according to claim 1, characterized in that, Each of the protective plates (1) has two symmetrical moving slots (14) on its lower surface that are adapted to the upper end of the second plug-in block (7). A first adjusting rod (15) extending to the outside is rotatably connected in the moving slot (14). The first adjusting rod (15) passes through the second plug-in block (7) and is threadedly connected to the second plug-in block (7). A second limiting nut (16) is threadedly connected to the side of the first adjusting rod (15).

4. The prefabricated protective shed for cast-in-place beam door opening according to claim 1, characterized in that, The second insertion slot (8) has detachable fixing plates (17) at both ends. The fixing plates (17) have tubes through them and are threadedly connected to a second adjusting rod (18). One end of the second adjusting rod (18) abuts against the side of the second insertion block (7) located at both ends of the second insertion slot (8). The side of the second adjusting rod (18) is threadedly connected to a third limiting nut (19).

5. The prefabricated protective shed for cast-in-place beam door opening according to claim 4, characterized in that, The second insertion groove (8) has a limiting groove (20) on each of its opposite side walls that is adapted to the fixing plate (17), and one of the limiting grooves (20) penetrates the side of the bearing seat (4).

6. The prefabricated protective shed for cast-in-place beam door opening according to claim 1, characterized in that, The protective plate (1) has an inverted V-shaped cross section, and each of the protective plates (1) is prefabricated.

7. The prefabricated protective shed for cast-in-place beam door opening according to claim 1, characterized in that, Both ends of the protective plate (1) are provided with rain shields (21), and the rain shields (21) extend beyond the support seat (4) and are away from the existing road (2).

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