Temporary fixing device for steel plate of bridge pier

Abstract

This utility model belongs to the field of steel pier encapsulation technology, specifically a temporary fixing device for steel plates used in steel pier encapsulation. It includes two opposing support plates, with a circular groove between their opposite ends. The inner diameter of the circular groove is between 1.25 and 1.75 times the outer diameter of the steel plate. A surrounding plate, adapted to the shape of the supporting plate, is provided on the top of each support plate. The two surrounding plates are detachably connected at their opposite ends, and lifting lugs are provided on the outer surface of the surrounding plate. This utility model can efficiently, stably, and safely achieve the transfer and temporary clamping and fixing of steel plates, greatly improving the construction efficiency and safety of steel pier encapsulation operations. Furthermore, it is reusable and exhibits outstanding performance.

Description

Technical Field

[0001] This utility model relates to the field of steel-encased bridge pier technology; specifically, this utility model relates to a temporary fixing device for steel plates used in steel-encased bridge piers. Background Technology

[0002] Steel pier encapsulation (also known as steel pier reinforcement) is a common bridge reinforcement technique, primarily used to improve the load-bearing capacity, seismic performance, or durability of existing bridge piers. In current steel pier encapsulation operations, steel plates are typically transferred via hoisting. Traditional hoisting methods require pre-welding lifting lugs to the outside of the steel plates, increasing the workload. Furthermore, direct hoisting of the steel plates easily leads to localized wear caused by collisions, affecting the quality of the steel plate bonding and the jointing effect, thus hindering the welding process.

[0003] In some other existing technologies, there are also methods for hoisting and transferring steel plates with the assistance of auxiliary equipment. For example, Chinese Patent Application No. 2020222824955 discloses a ring-shaped clamp for encasing steel casings on bridge piers. This method uses pre-drilled bolt holes on the outside of the steel plate, and bolts to fix the clamp to the outside of the steel plate. Lifting lugs are also provided on the clamp. This solution mainly utilizes the connection of the clamp to force the steel plates to fit tightly together, improving the steel plate connection effect.

[0004] However, the above solutions, like traditional methods, all suffer from the following drawbacks:

[0005] Numerous bolt holes need to be pre-drilled on the steel plate surface for fixing clamps. Once the steel plate deforms, the bolts and bolt holes will be misaligned, making it difficult for the bolts to effectively penetrate the bolt holes, resulting in inconvenience in use. At the same time, the large number of pre-drilled bolt holes on the steel plate surface will increase construction costs.

[0006] The lack of effective protection during the transfer of steel plates, especially when the steel plates are placed on the piers, makes them prone to collisions that cause surface wear or deformation. This also makes it difficult for workers to operate and poses certain safety hazards. Utility Model Content

[0007] In view of this, the present invention provides a temporary fixing device for steel plates used to cover bridge piers, thereby solving or at least alleviating the above-mentioned problems existing in the prior art.

[0008] To achieve the aforementioned objective, this utility model provides a temporary fixing device for steel plates used in the cladding of bridge piers, comprising two support plates arranged opposite each other, with a circular groove between the opposite ends of the two support plates. The inner diameter of the circular groove is between 1.25 and 1.75 times the outer diameter of the steel plate. A surrounding plate adapted to the shape of the support plate is provided on the top of the support plate. The opposite ends of the two surrounding plates are detachably connected, and the outer surface of the surrounding plate is provided with lifting lugs.

[0009] Preferably, a locking block is fixedly installed on both sides of the inner end of one of the enclosure panels, and a sleeve block is fixedly installed on both sides of the inner end of the other enclosure panel. The bottom of the sleeve block is provided with a groove that allows the locking block to be fitted from top to bottom.

[0010] Preferably, the support plate includes an annular portion adapted to the pier and an extension portion extending outward from the outer end of the annular portion, and when the steel plate is located inside the extension portion, its inner end is located outside the circular groove.

[0011] Preferably, a push plate is provided at the middle position of the inner surface of the enclosure, and a push screw that is threadedly engaged with the enclosure is rotatably connected to the outer side of the push plate.

[0012] Preferably, pressure plates are provided at both ends of the inner sides of the two enclosures, and the outer sides of the pressure plates are rotatably connected to internal pressure rods that are threaded into the enclosures. The pressure plates on the two enclosures are distributed vertically, and the inner surface of the pressure plates is set into an arc shape that matches the surface of the steel plate.

[0013] Preferably, the pressure plates are symmetrically distributed with the junction of the two enclosure plates as the center line, and the end of the steel plate located in the extension portion is located inside the pressure plate.

[0014] Preferably, two main stop bars and two auxiliary stop bars are respectively provided on the left and right sides of the outer surface of the pressure plate, and the main stop bars and the auxiliary stop bars are symmetrically distributed. The surrounding plate is provided with a circular hole for the main stop bars and the auxiliary stop bars to pass through. The main stop bar is always inserted in its corresponding circular hole. When the inner surface of the pressure plate is pressed against the outside of the steel plate on the surface of the pier, the outer end of the auxiliary stop bar is flush with the inner opening of its corresponding circular hole.

[0015] Preferably, a guide rod is fixedly installed on the outside of the pallet, a guide sleeve is fixedly installed on the enclosure, the top end of the guide rod passes through the guide sleeve, an adjusting screw is rotatably installed on the outside of the enclosure, a threaded sleeve is threaded on the outside of the adjusting screw, and the two ends of the threaded sleeve are respectively fixedly connected to two of the guide rods.

[0016] Compared with the prior art, the present invention has at least the following beneficial effects:

[0017] The temporary fixing device for steel plates used in the pier steel-encasing of this application enables the efficient, stable, and safe transfer of steel plates along the pier column outside the column. After the steel plates are transferred to the installation position, they are temporarily fixed and supported, which greatly improves the work efficiency of pier steel-encasing and enhances construction safety.

[0018] The temporary fixing device for steel plates used in this application for pier steel enclosure does not require additional processing of the steel plates themselves. Furthermore, it can be reused after processing and forming, resulting in outstanding performance. Attached Figure Description

[0019] The disclosure of this utility model will become more apparent with reference to the accompanying drawings. It should be understood that these drawings are for illustrative purposes only and are not intended to limit the scope of protection of this utility model. In the drawings:

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0021] Figure 2 This utility model Figure 1 A partial schematic diagram.

[0022] Reference numerals: 1-Plate; 1.1-Annular part; 1.2-Extension part; 2-Circular groove; 3-Surround plate; 4-Lifting lug; 5-Clamping block; 6-Sleeve block; 7-Sleeve groove; 8-Push plate; 9-Push screw; 10-Pressure plate; 11-Inner pressure screw; 12-Main stop rod; 13-Secondary stop rod; 14-Round hole; 15-Guide rod; 16-Guide sleeve; 17-Adjusting screw; 18-Threaded sleeve. Detailed Implementation

[0023] The technical solutions in the embodiments of this utility model will be clearly and completely described below. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0024] like Figure 1 and Figure 2 As shown, this utility model provides a temporary fixing device for steel plates used to cover bridge piers. It consists of two support plates 1 arranged opposite each other, with a circular groove 2 between the opposite ends of the two support plates 1. The inner diameter of the circular groove 2 is between 1.25 and 1.75 times the outer diameter. The top of the support plate 1 is provided with a surrounding plate 3 that matches its shape. The opposite ends of the two surrounding plates 3 are detachably connected, and the outer surface of the surrounding plate 3 is provided with lifting lugs 4.

[0025] In this embodiment, the support plate 1, the surrounding plate 3, and the lifting lug 4 form a lifting frame capable of supporting the steel plate. Two steel plates to be installed are placed on the two support plates 1 respectively. Then, the crane hook is connected to the lifting lug 4, and the lifting frame and steel plates are hoisted as a whole to the outside of the pier column, allowing the support plate 1 to fit onto the pier column. Afterward, the two surrounding plates 3 are connected, forming a relatively stable whole. At this point, a closed circular groove 2 is formed between the opposite ends of the two support plates 1.

[0026] Afterwards, a crane can be used to lift the entire gantry and steel plate along the pier to the installation position of the steel plate, and then push the steel plate inward so that the steel plate enters the circular groove 2. The steel plate will fall down from the circular groove 2 to the top of the previous installed steel plate and be supported.

[0027] At this time, the outside of the steel plate is limited by the groove wall of the circular groove 2, and the bottom of the steel plate is supported by the previous installed steel plate, so that the steel plate can be stably restricted in the preset installation position, thereby achieving temporary fixation of the steel plate.

[0028] In summary, in this embodiment, by utilizing the cooperation of two hangers formed by two sets of support plates 1 and surrounding plates 3, two semi-circular steel plates can be stably lifted along the pier column using a hoisting method. After being lifted to a suitable position, the steel plates can be temporarily fixed, which greatly improves the efficiency of steel plate transfer and fixing.

[0029] One of the inner ends of the enclosure panel 3 has locking blocks 5 fixedly installed on both sides, and the other enclosure panel 3 has sleeve blocks 6 fixedly installed on both sides of its inner end. The bottom of the sleeve blocks 6 has a groove 7 that allows the locking blocks 5 to be fitted onto them from top to bottom. When the two enclosure panels 3 are hoisted and connected using a crane, the height of the enclosure panel 3 with the sleeve blocks 6 is made greater than the height of the enclosure panel 3 with the locking blocks 5 installed. This allows the groove 7 to fit the locking blocks 5 from top to bottom, achieving the locking connection between the two enclosure panels 3. After the two enclosure panels 3 are locked together, they are fixed not only in the left-right direction but also in the front-back direction.

[0030] The support plate 1 includes an annular portion 1.1 adapted to the pier and an extension portion 1.2 extending outward from the outer end of the annular portion 1.1. When the steel plate is located within the extension portion 1.2, its inner end is located outside the circular groove 2. During the transfer of the steel plate, it is located within the extension portion 1.2, ensuring that the steel plate itself and the adhesive on its inner surface do not touch the already installed steel plate or pier as the steel plate climbs along the pier. After the steel plate is transferred to the installation position, by pushing the steel plate inward, the bottom end of the steel plate enters the gap between the circular groove 2 and the pier, and then falls freely to the top of the already installed steel plate below it. Pressing the steel plate inward further will bond the steel plate to the outside of the pier, and then welding the joints between the steel plates is performed.

[0031] A push plate 8 is located at the center of the inner surface of the enclosure plate 3. A push screw 9, threadedly connected to the outer side of the push plate 8, is rotatably connected to the enclosure plate 3. By rotating the push screw 9, the steel plate within the extension portion 1.2 is pushed into the circular groove 2, facilitating the displacement of the steel plate on top of the support plate 1. Simultaneously, after the steel plate falls onto the top of the pre-installed steel plate below, rotating the push screw 9 and applying pressure to the steel plate using the push plate 8 further presses and secures the steel plate against the outside of the pier column.

[0032] Both ends of the inner sides of the two enclosure plates 3 are provided with pressure plates 10. The outer surfaces of the pressure plates 10 are rotatably connected to internal pressure rods 11 that are threaded into the enclosure plates 3. The pressure plates 10 on the two enclosure plates 3 are distributed vertically, and the inner surface of the pressure plates 10 is set into an arc shape that matches the surface of the steel plate. By rotating the internal thread rods, the pressure plates 10 are displaced inward, and the pressure plates 11 can press the ends of the steel plates against the outside of the pier column, thereby improving the pressing and fixing effect of the steel plates.

[0033] The pressure plates 10 are symmetrically distributed around the joint of the two surrounding plates 3, with the ends of the steel plates within the extension portion 1.2 located inside the pressure plates 10. This arrangement allows the pressure plates 10 to cover the joint between the two steel plates, simultaneously pressing the two steel plates against the outside of the pier at the joint. This not only improves the pressing and fixing effect of the steel plates but also makes the joint more regular, improving the splicing effect. It effectively avoids the staggered phenomenon at the joint caused by local deformation of the steel plates, providing a better foundation for steel plate welding and improving the fixing effect of the steel plates encasing the bridge pier.

[0034] In addition, when transferring the steel plate, the inner pressure screw 11 is rotated so that the pressure plate 10 is in the innermost position. At this time, the pressure plate 10 can block the inner side of the end of the steel plate, preventing the steel plate from falling or shaking from the direction of the circular groove 2 during the transfer process.

[0035] After the steel plates are transferred to the installation position, the inner pressure screw 11 is rotated first, causing the pressure plate 10 to move outward, providing space for the two steel plates to be joined. Then, after the two steel plates are joined, the inner pressure screw 11 is rotated again, and the pressure plate 10 is used to press and fix the steel plates at the joint.

[0036] Two main stop bars 12 and two auxiliary stop bars 13 are respectively provided on the left and right sides of the outer surface of the pressure plate 10, and the main stop bars 12 and auxiliary stop bars 13 are symmetrically distributed. The surrounding plate 3 is provided with a circular hole 14 for the main stop bars 12 and auxiliary stop bars 13 to pass through. The main stop bar 12 is always inserted in its corresponding circular hole 14. When the inner surface of the pressure plate 10 is pressed against the outside of the steel plate on the surface of the pier, the outer end of the auxiliary stop bar 13 is flush with the inner opening of its corresponding circular hole 14.

[0037] The main stop rod 12, which passes through the circular hole 14, can limit the pressure plate 10, so that the pressure plate 10 will not rotate when the inner pressure screw 11 is rotated, thereby ensuring that the pressure plate 10 can be stably displaced inside and outside when the inner pressure screw 11 is rotated.

[0038] When transferring the steel plate, the main stop rod 12 covers the area between the pressure plate 10 and the surrounding plate 3, thereby blocking the end of the steel plate and preventing it from falling. After the two surrounding plates 3 are joined, the auxiliary stop rod 13 is located inside its corresponding circular hole 14. Then, when the inner pressure screw 11 is rotated to move the pressure plate 10 outward to form a space for steel plate joining, the auxiliary stop rod 13 is inserted into the circular hole 14.

[0039] When the pressure plate 10 is pressed against the outside of the steel plate, the auxiliary stop rod 13 disengages from the round hole 14. This arrangement allows the two enclosure plates 3 to remain connected and move downwards along the steel plate outside the pier to the ground after the steel plate is installed. At this time, the auxiliary stop rod 13 is located outside the round hole 14, thus enabling the separation of the two enclosure plates 3 directly on the ground.

[0040] A guide rod 15 is fixedly installed on the outside of the support plate 1, and a guide sleeve 16 is fixedly installed on the surrounding plate 3. The top end of the guide rod 15 passes through the guide sleeve 16. An adjusting screw 17 is rotatably installed on the outside of the surrounding plate 3. A threaded sleeve 18 is threaded onto the outside of the adjusting screw 17, and the two ends of the threaded sleeve 18 are respectively fixed to two of the guide rods 15. By rotating the adjusting screw 17, the height of the support plate 1 can be adjusted. Thus, on the one hand, the height of the supported steel plate can be directly adjusted from the outside of the pier, so that the steel plate can fall more smoothly onto the top of the installed steel plate. Secondly, the height of the support plate 1 can also be adjusted according to the height of the steel plate, so that the supported steel plate can be more stably supported and limited by the surrounding plate 3, improving the stability of steel plate transmission. In addition, the position of the push plate 8 pressing the steel plate can also be adjusted by adjusting the height of the steel plate, improving the steel plate pressing and fixing effect.

[0041] The technical scope of this utility model is not limited to the contents of the above description. Those skilled in the art can make various modifications and variations to the above embodiments without departing from the technical concept of this utility model, and all such modifications and variations should fall within the scope of this utility model.

Claims

1. A steel sheet temporary fixing device for a pier wrapping steel, characterized by, It includes two pallets (1) arranged opposite to each other, and a circular groove (2) is provided between the opposite ends of the two pallets (1). The inner diameter of the circular groove (2) is between 1.25 times and 1.75 times the outer diameter of the steel plate. A surrounding plate (3) adapted to the shape is provided on the top of the pallet (1). The opposite ends of the two surrounding plates (3) are detachably connected, and the outer surface of the surrounding plate (3) is provided with a lifting lug (4).

2. The temporary fixing device for steel plates used to encase bridge piers as described in claim 1, characterized in that, One of the enclosures (3) has a locking block (5) fixedly installed on both sides of the inner end, and the other enclosure (3) has a sleeve block (6) fixedly installed on both sides of the inner end. The bottom of the sleeve block (6) is provided with a sleeve groove (7) that can fit the locking block (5) from top to bottom.

3. The temporary fixing device for steel plates used to encase bridge piers as described in claim 1, characterized in that, The support plate (1) includes an annular portion (1.1) adapted to the pier and an extension portion (1.2) extending outward from the outer end of the annular portion (1.1), and when the steel plate is located in the extension portion (1.2), its inner end is located outside the circular groove (2).

4. The temporary fixing device for steel plates used to encase bridge piers as described in claim 3, characterized in that, A push plate (8) is provided at the middle position of the inner surface of the enclosure (3), and a push screw (9) that is threadedly connected to the outer side of the push plate (8) is rotatably connected to the enclosure (3).

5. A temporary fixing device for steel plates used to encase bridge piers as described in claim 3, characterized in that, Both ends of the inner side of the two enclosures (3) are provided with pressure plates (10). The outer side of the pressure plates (10) is rotatably connected with an inner pressure screw (11) that is threaded to the enclosure (3). The pressure plates (10) on the two enclosures (3) are distributed vertically. The inner surface of the pressure plates (10) is set into an arc shape that is adapted to the surface of the steel plate.

6. The temporary fixing device for steel plates used to encase bridge piers as described in claim 5, characterized in that, The pressure plate (10) is symmetrically distributed with the junction of the two surrounding plates (3) as the center line, and the end of the steel plate located in the extension (1.2) is located inside the pressure plate (10).

7. A temporary fixing device for steel plates used to encase bridge piers as described in claim 6, characterized in that, Two main stop rods (12) and a secondary stop rod (13) are respectively provided on the left and right sides of the outer surface of the pressure plate (10), and the main stop rods (12) and the secondary stop rods (13) are symmetrically distributed. The surrounding plate (3) is provided with a circular hole (14) for the main stop rods (12) and the secondary stop rods (13) to pass through. The main stop rod (12) is always inserted in its corresponding circular hole (14). When the inner surface of the pressure plate (10) is pressed against the outside of the steel plate on the surface of the pier, the outer end of the secondary stop rod (13) is flush with the inner opening of its corresponding circular hole (14).

8. The temporary fixing device for steel plates used to encase bridge piers as described in claim 1, characterized in that, A guide rod (15) is fixedly installed on the outside of the pallet (1), and a guide sleeve (16) is fixedly installed on the enclosure (3). The top end of the guide rod (15) passes through the guide sleeve (16). An adjusting screw (17) is rotatably installed on the outside of the enclosure (3). A threaded sleeve (18) is threaded on the outside of the adjusting screw (17), and the two ends of the threaded sleeve (18) are respectively fixedly connected to two of the guide rods (15).

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