In-situ pier concrete fast-mounting bottom formwork and construction method

Abstract

This invention relates to the field of pier formwork technology, specifically to a quick-assembly suspended bottom formwork and construction method for cast-in-place pier concrete. It includes a formwork section assembled from two first formwork panels and two second formwork panels, with multiple formwork sections joined vertically to form the entire suspended bottom formwork. Rubber strips are installed on the inner sides of the front and rear sides of the first formwork panels and the inner sides of the left and right sides of the second formwork panels, ensuring close contact. This quick-assembly suspended bottom formwork and construction method for cast-in-place pier concrete utilizes rubber strips and nylon buffer pads to eliminate static electricity and suppress sparks at the joints of the suspended bottom formwork, preventing safety hazards during assembly in hazardous material work areas. The formwork eliminates the need for welding during assembly, solving the problem of open flames in hazardous material work areas and enabling its safe use in pier casting operations.

Description

Technical Field

[0001] This invention relates to the field of pier and abutment formwork technology, specifically to quick-assembly suspended bottom formwork and construction method for cast-in-place pier and abutment concrete. Background Technology

[0002] Piers are used in water conservancy projects and port terminals, providing good support for the protection of riverbanks, coastlines, or ports. Currently, piers on the market are formed by on-site concrete casting. Before casting, a suspended formwork is used, concrete is poured into the formwork, and then the formwork is removed to complete the pier casting. However, the suspended formwork currently on the market still has some problems in use, such as:

[0003] Chinese Patent No. CN204225483U discloses a pier formwork, which involves attaching black arc-shaped plastic strips to the top of the assembled aluminum alloy formwork for secure mounting. This ensures high-precision assembly, guaranteeing the horizontal and vertical alignment of the pier. Thickness tolerances are easily controlled, interface dimensional deviations are low, operation is simple, and grout leakage is minimal. Furthermore, the aluminum alloy formwork itself does not absorb water and is less prone to warping, bulging, or cracking during reuse. Therefore, the concrete forming quality is high, the forming effect is good, and the GIS pier surface is smooth, with straight and rounded corners, resulting in a good appearance. Chinese Patent No. CN211873823U discloses a... The steel formwork for concrete piers discloses a method for its use. First, the upper and lower sections of the steel formwork are spliced ​​together. Then, the left and right sections are spliced ​​together, and the splices are secured with standard bolts passing through the frame. Finally, an annular back rib is fitted onto the outside of the assembled steel formwork. Concrete is poured into the pre-drilled 200×300mm concrete pouring opening at the top of the entire shape formed by the steel formwork. This concrete pier steel formwork is rationally designed, and its use ensures more robust and reliable reinforcement, guaranteeing the quality of the concrete pouring. Furthermore, the reusable steel formwork saves materials, protects the environment, and reduces costs.

[0004] In the aforementioned prior art, the suspended bottom formwork involves first splicing the upper and lower steel formwork of the pier, and then splicing the left and right parts of the steel formwork. Although the splicing structure replaces welding and can solve the problem of open flames from welding in hazardous material construction areas, the lack of protective mechanisms during the splicing process causes friction and collisions between the spliced ​​steel formwork. These frictions and collisions generate and accumulate static electricity and sparks, which can still affect the safety of hazardous material construction areas during the assembly of the suspended bottom formwork and affect its usability. Therefore, this invention proposes a quick-assembly suspended bottom formwork and construction method for cast-in-place pier concrete to solve the problems mentioned above. Summary of the Invention

[0005] The purpose of this invention is to provide a quick-assembly suspended bottom formwork for cast-in-place pier concrete and its construction method, in order to solve the problem mentioned in the background art. Currently, the suspended bottom formwork on the market is used by first splicing the upper and lower steel formwork of the pier, and then splicing the left and right parts of the steel formwork. Although the splicing structure replaces welding and can solve the problem of open flame welding in hazardous material construction areas, there is no protective mechanism set in the steel formwork during the splicing process. Therefore, friction and collision will occur between the spliced ​​steel formwork. During the friction and collision, static electricity and sparks will be generated and accumulated. As a result, the suspended bottom formwork will still affect the safety of hazardous material construction areas during assembly, thus affecting the use of the suspended bottom formwork.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] The quick-assembly suspended bottom formwork for cast-in-place pier concrete includes a section of formwork assembled from two first formwork panels and two second formwork panels. Multiple sections of formwork are assembled vertically to form the entire suspended bottom formwork. Rubber strips that fit together are installed on the inner sides of the front and rear sides of the first formwork panel and the inner sides of the left and right sides of the second formwork panel. Nylon buffer pads are installed in grooves on the upper and lower sides of the first and second formwork panels. Two adjacent first formwork panels and two adjacent second formwork panels are connected by a docking mechanism. Upper and lower convex plates are installed sequentially from top to bottom on the outer sides of the first and second formwork panels. Splicing components are connected to the inside of one end of the upper and lower convex plates.

[0008] Preferably, the docking mechanism includes docking holes equally spaced on the upper surfaces of the first template panel and the second template panel, and docking posts equally spaced on the lower surfaces of the first template panel and the second template panel, with the docking posts inserted into the corresponding docking holes below.

[0009] Preferably, a load-bearing frame is installed on the outer side of both the first template panel and the second template panel, and the upper part of the load-bearing frame is connected to the upper convex plate, and the lower part of the load-bearing frame is connected to the lower convex plate.

[0010] Preferably, the splicing assembly includes a connecting block connected inside one end of the upper convex plate and the lower convex plate. The connecting block is arranged in an inverted "L" shape, and a guide rod is installed inside one end of both the upper convex plate and the lower convex plate. One end of the guide rod passes through the interior of the connecting block, and a reset spring is nested on the outer side of the other end of the guide rod.

[0011] Preferably, the other end of the upper convex plate and the lower convex plate are both provided with connecting grooves, and the outer end of the connecting block is inserted into the corresponding connecting groove.

[0012] Preferably, vertical rods are vertically and rotatably installed inside both the lower and upper convex plates. A push plate is fixed to the outside of the vertical rods inside the lower and upper convex plates, and a roller is installed at the outer end of the push plate. The roller at the outer end of the push plate is in close contact with one side of the connecting block. The connecting block forms a sliding structure through the push plate. A moving block is fixed to the outside of the vertical rod above the lower and upper convex plates. There is a gap between the lower convex plate and the moving block above it, and between the upper convex plate and the moving block above it. A fixing screw is threaded through the interior of a row of moving blocks on the same vertical plane, and the outside of the fixing screw is in close contact with the outer side of the lower and upper convex plates at the corresponding positions.

[0013] Preferably, the upper end of the vertical rod has a groove, and the lower end of the vertical rod is fixed with a protrusion, both of which are rectangular grooves and protrusions that fit together.

[0014] Preferably, a second magnet block is fixed below the lower convex plate.

[0015] Preferably, a first magnet block is installed on the inner side of the movable block above the upper convex plate, and the first magnet block and the second magnet block are correspondingly arranged, and the first magnet block and the second magnet block are magnetic poles of the same name, and the movable block above the upper convex plate forms an automatic rotation structure through the second magnet block.

[0016] Another technical solution provided by this invention is a construction method for quick-assembly suspended bottom formwork of cast-in-place pier concrete, comprising the following steps:

[0017] S1: Move the multiple first template panels and two second template panels that have been produced and processed to the assembly area, and assemble the two first template panels and two second template panels into a section of template. The rubber strip is used to prevent static electricity accumulation.

[0018] S2: Fasten the four corners of the suspended bottom template composed of two first template panels and two second template panels with buckles to close the mold. Then, use ropes to tie and fix the suspended bottom template composed of two first template panels and two template panels. Then, use an external lifting mechanism to lift the tied ropes and place one of the assembled templates on top of the other assembled template.

[0019] S3: Then the bottom of the first template panel and the second template panel are inserted into the corresponding bottom holes. The two adjacent first template panels and the two adjacent second template panels are in contact with each other through nylon buffer pads. Therefore, static electricity and sparks can be avoided and can be eliminated and sparks suppressed at the splicing of the bottom template.

[0020] S4: After the multi-segment hanging bottom template is spliced ​​up and down, manually rotate multiple moving blocks on the same vertical plane outward in sequence. The moving blocks drive the vertical rod and the push plate to rotate. When the push plate rotates, it drives the roller at the outer end to push the connecting block inward. The outer end of the inward-moving connecting block is inserted into the corresponding connecting groove.

[0021] S5: Next, while rotating the fixing screw, insert it into the multiple moving blocks on the same vertical plane after it has been rotated outward, thus completing the entire assembly operation.

[0022] Compared with the prior art, the beneficial effects of the present invention are:

[0023] This quick-assembly suspended bottom formwork and construction method for cast-in-place pier concrete utilizes rubber strips and nylon buffer pads to eliminate static electricity and suppress sparks at the joints of the suspended bottom formwork, preventing safety hazards in hazardous material work areas during assembly. Furthermore, the formwork eliminates the need for welding during assembly, thus resolving the issue of open flames from welding in hazardous material work areas. Details are as follows:

[0024] (1) By setting rubber strips, large friction and impact forces are avoided when the front and rear sides of the first template panel are spliced ​​with the second template panel. At the same time, by setting nylon buffer pads, large friction and impact forces are avoided between the first template panel and the first template panel spliced ​​above and below, as well as between the second template panel and the second template panel spliced ​​above and below. Therefore, static electricity and sparks are avoided. Then, static electricity and sparks can be eliminated and sparks suppressed at the splicing point of the bottom template by rubber strips and nylon buffer pads. This avoids affecting the safety of the hazardous materials construction area when the bottom template is assembled. The bottom template does not need to be fixed by welding during assembly, thus solving the problem of open flame welding in the hazardous materials construction area. This makes the bottom template well used for the casting and forming of piers and platforms, and the piers and platforms can be well used in areas such as docks in the later stage.

[0025] (2) By setting the docking column and docking hole one by one, the upper and lower first template panels can be docked and spliced ​​quickly. Similarly, the upper and lower second template panels can be docked and spliced ​​quickly. At the same time, the outward rotating moving block drives the vertical rod and the push plate to rotate, so that the push plate pushes the connecting block to move inward and insert it into the corresponding connecting groove. Thus, the adjacent upper convex plates and the adjacent lower convex plates on the same horizontal plane can be engaged and docked, thereby ensuring the stability of the splicing between the first template panel and the second template panel on the same horizontal plane. By inserting the fixing screw into the outward rotating moving block, the stability of the moving block after rotation can be ensured.

[0026] (3) Furthermore, by inserting the protrusion into the groove, the two adjacent vertical rods are engaged and connected. At the same time, the descending second magnet block approaches the first magnet block, so that the second magnet block, which has the same magnetic pole, applies a repulsive force to the first magnet block, so that the first magnet block can drive the corresponding moving block to rotate outward. Then, some moving blocks can automatically drive the vertical rod to rotate, without having to manually rotate all the moving blocks. Later, only the top and bottom two moving blocks need to be manually rotated. Therefore, the efficiency of the assembly and disassembly of the suspended bottom formwork can be further improved. The operation is convenient and it is easy to quickly assemble the suspended bottom formwork. The construction speed is fast. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the present invention;

[0028] Figure 2 For the present invention Figure 1 Enlarged structural diagram at point A in the middle;

[0029] Figure 3 This is a schematic diagram of the overall bottom view of the present invention;

[0030] Figure 4 This is a schematic diagram of the separation structure of the first template panel and the second template panel of the present invention;

[0031] Figure 5 This is a schematic diagram of the three-dimensional structure of the two first template panels spliced ​​together in this invention;

[0032] Figure 6 This is a schematic diagram of the inner structure of the splicing of the two first template panels of the present invention;

[0033] Figure 7 This is a schematic diagram of the separation structure of the upper and lower first template panels of the present invention;

[0034] Figure 8 This is a schematic diagram of the internal structure of the lower and upper convex plates of the present invention;

[0035] Figure 9 This is a bottom view of the first template panel structure of the present invention;

[0036] Figure 10 This is a schematic diagram of the three-dimensional structure of the vertical rod of the present invention;

[0037] Figure 11 This is a schematic diagram of the preliminary three-dimensional structure of the first template panel and the second template panel of the present invention.

[0038] Figure 12 This is a schematic diagram of the internal structure of the upper convex plate during the initial assembly of the first template panel and the second template panel of the present invention;

[0039] Figure 13 For the present invention Figure 12 Enlarged structural diagram at point B.

[0040] In the diagram: 1. First template panel; 2. Second template panel; 3. Rubber strip; 4. Nylon buffer pad; 5. Docking hole; 6. Lower convex plate; 7. Upper convex plate; 8. Support frame; 9. Docking column; 10. Fixing screw; 11. Vertical rod; 111. Groove; 112. Protrusion; 12. Moving block; 121. First magnet block; 13. Second magnet block; 14. Connecting block; 15. Guide rod; 151. Return spring; 16. Push plate; 17. Connecting groove. Detailed Implementation

[0041] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0042] Please see Figures 1-13 The present invention provides the following technical solution:

[0043] Example 1: The quick-assembly suspended bottom formwork and construction method for cast-in-place pier concrete in this example can eliminate static electricity and suppress sparks at the joints of the suspended bottom formwork, thus effectively preventing the assembly of the suspended bottom formwork from affecting the safety of hazardous material construction areas. Furthermore, the suspended bottom formwork does not require welding for fixing during assembly, thereby solving the problem of open flames from welding in hazardous material construction areas. This allows the suspended bottom formwork to be well-suited for the casting and forming of piers, enabling the piers to be well-suited for later use in areas such as wharves. For specific structural details, please refer to the attached document. Figure 1 and appendix Figures 3-13 As shown, it includes a template section assembled from two first template panels 1 and two second template panels 2. Multiple template sections are assembled vertically to form the entire suspended bottom template. Rubber strips 3 are installed on the inner sides of the front and rear sides of the first template panel 1 and the inner sides of the left and right sides of the second template panel 2. Nylon buffer pads 4 are installed in grooves on the upper and lower sides of the first template panel 1 and the second template panel 2. Two adjacent first template panels 1 and two adjacent second template panels 2 are connected by a docking mechanism. Upper convex plates 7 and lower convex plates 6 are installed sequentially from top to bottom on the outer sides of the first template panel 1 and the second template panel 2. A splicing component is connected to the inner end of one end of the upper convex plate 7 and the lower convex plate 6.

[0044] The docking mechanism includes docking holes 5 evenly spaced on the upper surfaces of the first template panel 1 and the second template panel 2, and docking posts 9 evenly spaced on the lower surfaces of the first template panel 1 and the second template panel 2. The docking posts 9 are inserted into the corresponding docking holes 5 below. A load-bearing frame 8 is installed on the outer side of both the first template panel 1 and the second template panel 2. The upper part of the load-bearing frame 8 is connected to the upper convex plate 7, and the lower part of the load-bearing frame 8 is connected to the lower convex plate 6. The splicing assembly includes a connecting block 14 connected to one end of the upper convex plate 7 and the lower convex plate 6. The connecting block 14 is inverted "L" shape. A guide rod 15 is installed inside one end of both the upper convex plate 7 and the lower convex plate 6. One end of the guide rod 15 passes through the interior of the sliding connecting block 14, and a return spring 151 is nested on the outer side of the other end of the guide rod 15. A connecting rod 151 is also provided inside the other end of both the upper convex plate 7 and the lower convex plate 6. The connecting slot 17 is connected to the outer end of the connecting block 14, and the lower convex plate 6 and the upper convex plate 7 are both vertically and rotatably mounted with vertical rods 11. The outer side of the vertical rods 11 located in the lower convex plate 6 and the upper convex plate 7 is fixed with a push plate 16, and the outer end of the push plate 16 is equipped with a roller. The roller at the outer end of the push plate 16 is in contact with one side of the connecting block 14, and the connecting block 14 forms a sliding structure through the push plate 16. The outer side of the vertical rods 11 located above the lower convex plate 6 and the upper convex plate 7 is fixed with a moving block 12. There is a gap between the lower convex plate 6 and the upper moving block 12, and between the upper convex plate 7 and the upper moving block 12. A fixing screw 10 is threaded through the interior of a row of moving blocks 12 on the same vertical plane, and the outer side of the fixing screw 10 is in contact with the outer side of the lower convex plate 6 and the upper convex plate 7 at the corresponding position.

[0045] First, move the pre-fabricated first template panels 1 and second template panels 2 into the assembly area. The dimensions of the first template panel 1 are 1000mm x 200mm x 100mm, and the dimensions of the second template panel 2 are 1000mm x 200mm x 100mm. The length of the connecting block 14 is 200mm. (The dimensions of the first template panels 1 and second template panels 2 can be modified during production according to the different dimensions of the pier). Then, as shown in the attached diagram... Figure 4 and attached Figures 11-13As shown, the two second template panels 2 are respectively engaged with the front and rear sides of the first template panel 1 on the left. Then, the first template panel 1 on the right is moved to the left, so that the front and rear sides of the first template panel 1 on the right are engaged with the right side of the two second template panels 2. At this time, the rubber strip 3 on the first template panel 1 is in close contact with the rubber strip 3 on the second template panel 2. The rubber strip 3 is designed to avoid large friction and impact forces when the front and rear sides of the first template panel 1 are spliced ​​with the second template panel 2, and to avoid static electricity accumulation. Then, multiple buckles available on the market are used to sequentially fasten the contact ends of the first template panel 1 and the second template panel 2, so that the four corners of the bottom template section composed of the first template panel 1 and the second template panel 2 are fastened by the buckles, which facilitates the buckle fastening and mold closing. Then, the bottom template section composed of the two first template panels 1 and the second template panel 2 is tied and fixed with ropes. (Since this part is existing technology, it will not be described in detail here.) (Detailed introduction) Then, as described above, the same operation is performed to assemble multiple sections of the suspended template. Then, the ropes binding the sections are lifted by an external lifting mechanism, and one section of the assembled template is placed above another section of the assembled template. At this time, the connecting posts 9 on the bottom surfaces of the first template panel 1 and the second template panel 2 are inserted into the corresponding connecting holes 5 below. This allows the two adjacent first template panels 1 and the two adjacent second template panels 2 to engage and splice. At the same time, the two adjacent first template panels 1 and the two adjacent second template panels 2 are in contact with each other through nylon buffer pads 4. Therefore, the setting of nylon buffer pads 4 can avoid the generation and accumulation of large friction and impact forces between the two adjacent first template panels 1 and the two adjacent second template panels 2, thus avoiding the generation and accumulation of static electricity and sparks. Static electricity can be eliminated and sparks suppressed at the splicing points of the suspended template, preventing the assembly of the suspended template from affecting the safety of the hazardous materials construction area.

[0046] Following the steps described above, after assembling the multiple sections of the suspended base template vertically, manually rotate the multiple moving blocks 12 on the same vertical plane outwards in sequence. The moving blocks 12 drive the vertical rod 11 and the push plate 16 to rotate. When the push plate 16 rotates, it drives the outer roller to push the connecting block 14 inwards. The pushing force applied by the push plate 16 to the connecting block 14 is greater than the elastic coefficient of the return spring 151. The force generated by the return spring 151 when stretched is approximately 10-50N. The connecting block 14 moves stably inwards outside the guide rod 15. At this time, the return spring 151 stores its force, and the outer end of the inwardly moving connecting block 14 inserts into the corresponding connecting groove 17. Then... While rotating, the fixing screw 10 is inserted into multiple movable blocks 12 on the same vertical plane after being rotated outward. At this time, the fixing screw 10 is in close contact with the outer surfaces of the lower convex plate 6 and the upper convex plate 7, thus fixing the position of the rotated movable block 12. Therefore, through the interlocking of multiple sets of connecting blocks 14 and connecting grooves 17, multiple upper convex plates 7 on the same horizontal plane can be engaged and connected, and multiple lower convex plates 6 on the same horizontal plane can be engaged and connected. Thus, the stability of the splicing between the first template panel 1 and the second template panel 2 on the same horizontal plane is ensured. Then, the binding ropes and buckles are removed, and the entire suspended bottom template is assembled.

[0047] Finally, the entire bottom formwork is hoisted to the designated construction area by a lifting mechanism and suspended on the completed structure by a suspension system. There is no need to build supporting scaffolding from the bottom. Since this part is existing technology, it will not be described in detail here. After the bottom formwork is installed, concrete is poured into the bottom formwork from above. After a period of time, the concrete inside the bottom formwork is formed into a pier. Later, the fixing screw 10 is rotated upward and pulled out to separate the fixing screw 10 from the moving block 12. At this time, the demolding operation can be carried out in the same way as above.

[0048] To better demonstrate the construction method of quick-assembly suspended bottom formwork for cast-in-place pier concrete, this embodiment discloses the construction method of quick-assembly suspended bottom formwork for cast-in-place pier concrete, including the following steps:

[0049] Step 1: Move the multiple first template panels 1 and two second template panels 2 that have been produced and processed to the assembly area, and assemble the two first template panels 1 and two second template panels 2 into a section of template. The rubber strip 3 is used to prevent static electricity accumulation.

[0050] Step 2: Secure the four corners of the suspended bottom template consisting of two first template panels 1 and two second template panels 2 with buckles and then tie the suspended bottom template consisting of two first template panels 1 and two second template panels 2 with ropes. Then, lift the tied ropes with an external lifting mechanism and place one of the assembled templates on top of the other assembled template.

[0051] Step 3: Then, the bottom of the first template panel 1 and the second template panel 2 are inserted into the corresponding bottom hole 5. The two adjacent first template panels 1 and the two adjacent second template panels 2 are in contact with each other through the nylon buffer pad 4, so as to avoid the generation and accumulation of static electricity and sparks, and to eliminate static electricity and suppress sparks at the splicing of the bottom template.

[0052] Step 4: After the multiple suspended bottom templates are spliced ​​together, manually rotate the multiple moving blocks 12 on the same vertical plane outward in sequence. The moving blocks 12 drive the vertical rod 11 and the push plate 16 to rotate. When the push plate 16 rotates, it drives the roller at the outer end to push the connecting block 14 inward. The outer end of the inwardly moving connecting block 14 is inserted into the corresponding connecting groove 17.

[0053] Step 5: Next, while rotating the fixing screw 10, insert it into the multiple movable blocks 12 on the same vertical surface after it has been rotated outward, thus completing the entire assembly operation.

[0054] Example 2: The quick-assembly suspended formwork and construction method for cast-in-place pier concrete in this example, based on Example 1, allows some of the movable blocks 12 to automatically rotate the vertical rods 11, eliminating the need for manual rotation of all movable blocks 12. This saves assembly time and further improves the efficiency of the suspended formwork assembly and subsequent disassembly. See attached diagram for the specific structure. Figures 1-2 and appendix Figures 5-9 As shown, the upper end of the vertical rod 11 has a groove 111 inside, and the lower end of the vertical rod 11 is fixed with a protrusion 112. The groove 111 and the protrusion 112 are rectangular and fit together. The lower part of the lower convex plate 6 is fixed with a second magnet block 13. The inner side of the moving block 12 above the upper convex plate 7 is equipped with a first magnet block 121. The first magnet block 121 and the second magnet block 13 are correspondingly arranged. The first magnet block 121 and the second magnet block 13 are magnetic poles of the same name. The moving block 12 above the upper convex plate 7 forms an automatic rotation structure through the second magnet block 13. The first magnet block 121 and the second magnet block 13 are neodymium magnets.

[0055] When the ropes binding the assembled template are lifted by an external lifting mechanism, and one section of the assembled template is placed above another section of the assembled template, the lower convex plate 6 on the outer side of the first template panel 1 and the second template panel 2 inside the one section of the assembled template gradually approaches the upper convex plate 7 on the outer side of the first template panel 1 and the second template panel 2 inside the other section of the assembled template. At this time, the protrusion 112 at the lower end of the vertical rod 11 inside the lower convex plate 6 inserts into the groove 111 at the upper end of the vertical rod 11 inside the upper convex plate 7. Then, one section of the assembled template... As it continues to move downwards, the lower convex plate 6 approaches the upper convex plate 7. At this point, the second magnet block 13 at the bottom of the lower convex plate 6 approaches the corresponding first magnet block 121. Since the second magnet block 13, which has the same magnetic pole, applies a repulsive force to the first magnet block 121, the first magnet block 121 drives the corresponding moving block 12 above the upper convex plate 7 to rotate outwards. At this time, the corresponding moving block 12 above the upper convex plate 7 drives the vertical rod 11 to rotate. Through the convex-concave cooperation of the protrusion 112 and the groove 111, the vertical rod 11 inside the upper convex plate 7 can drive the vertical rod 11 inside the lower convex plate 6 to rotate. The vertical rod 11 rotates together, causing the push plate 16 to rotate inward. The roller at the outer end of the push plate 16 pushes the connecting block 14 inward. Then, the connecting block 14 moves inward outside the guide rod 15, as described above, so that one end of the connecting block 14 is inserted into the connecting groove 17. The pressure generated by the weight of a section of the suspended bottom template is greater than the elastic force of the return spring 151. The repulsive force between the second magnet block 13 and the first magnet block 121 is greater than the elastic coefficient of the return spring 151. The elastic coefficient of the return spring 151 is: With a repulsive force of 200 N / m, the first magnet block 121 and the second magnet block 13 have a repulsive force of about 500 N when they are 30 mm apart. Therefore, it can be ensured that one end of the connecting block 14 is stably inserted into the connecting groove 17. By repeating this operation, when multiple sections of the suspended bottom template are spliced ​​together, some of the moving blocks 12 can be automatically rotated outward. After the multiple sections of the suspended bottom template are spliced ​​together, it is only necessary to manually rotate the bottommost and topmost moving blocks 12 of the multiple sections of the suspended bottom template outward. Therefore, the efficiency of the assembly and disassembly of the suspended bottom template can be further improved.

[0056] Although the present invention 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 invention should be included within the protection scope of the present invention.

Claims

1. A quick-assembly suspended bottom formwork for cast-in-place pier concrete, comprising a section of formwork assembled from two first formwork panels (1) and two second formwork panels (2), wherein multiple sections of formwork are assembled vertically to form the entire suspended bottom formwork, characterized in that: Rubber strips (3) that fit together are installed on the inner sides of the front and rear sides of the first template panel (1) and the inner sides of the left and right sides of the second template panel (2). Nylon buffer pads (4) are installed in grooves on the upper and lower sides of the first template panel (1) and the second template panel (2). The two adjacent first template panels (1) and the two adjacent second template panels (2) are connected by a docking mechanism. The outer sides of the first template panel (1) and the second template panel (2) are installed with an upper convex plate (7) and a lower convex plate (6) from top to bottom. A splicing component is connected to one end of the upper convex plate (7) and the lower convex plate (6). The splicing assembly includes a connecting block (14) connected inside one end of the upper convex plate (7) and the lower convex plate (6). The connecting block (14) is arranged in an inverted "L" shape. A guide rod (15) is installed inside one end of both the upper convex plate (7) and the lower convex plate (6). One end of the guide rod (15) passes through the interior of the connecting block (14), and a reset spring (151) is nested on the outside of the other end of the guide rod (15). The other end of the upper convex plate (7) and the lower convex plate (6) are both provided with connecting grooves (17), and the outer end of the connecting block (14) is inserted into the corresponding connecting groove (17); Vertical rods (11) are vertically and rotatably installed inside both the lower convex plate (6) and the upper convex plate (7). A push plate (16) is fixed to the outside of the vertical rods (11) inside the lower convex plate (6) and the upper convex plate (7). A roller is installed at the outer end of the push plate (16). The roller at the outer end of the push plate (16) is in contact with one side of the connecting block (14). The connecting block (14) forms a sliding structure through the push plate (16). A moving block (12) is fixed to the outside of the vertical rods (11) above the lower convex plate (6) and the upper convex plate (7). There is a gap between the lower convex plate (6) and the upper moving block (12) and between the upper convex plate (7) and the upper moving block (12). A fixed screw (10) is threaded through the interior of a row of moving blocks (12) on the same vertical plane. The outside of the fixed screw (10) is in contact with the outer side of the lower convex plate (6) and the upper convex plate (7) at the corresponding position.

2. The quick-assembly suspended bottom formwork for cast-in-place pier concrete according to claim 1, characterized in that: The docking mechanism includes docking holes (5) that are equally spaced on the upper surfaces of the first template panel (1) and the second template panel (2), and docking posts (9) that are equally spaced on the lower surfaces of the first template panel (1) and the second template panel (2), and the docking posts (9) are inserted into the corresponding docking holes (5) below.

3. The quick-assembly suspended bottom formwork for cast-in-place pier concrete according to claim 2, characterized in that: The first template panel (1) and the second template panel (2) are both equipped with load-bearing frames (8), and the upper part of the load-bearing frame (8) is connected to the upper convex plate (7), and the lower part of the load-bearing frame (8) is connected to the lower convex plate (6).

4. The quick-assembly suspended bottom formwork for cast-in-place pier concrete according to claim 3, characterized in that: The upper end of the vertical rod (11) is provided with a groove (111), and the lower end of the vertical rod (11) is fixed with a protrusion (112). Both are rectangular grooves (111) and protrusions (112) that fit together.

5. The quick-assembly suspended bottom formwork for cast-in-place pier concrete according to claim 4, characterized in that: A second magnet block (13) is fixed below the lower convex plate (6).

6. The quick-assembly suspended bottom formwork for cast-in-place pier concrete according to claim 5, characterized in that: The inner side of the movable block (12) above the upper convex plate (7) is equipped with a first magnet block (121), and the first magnet block (121) and the second magnet block (13) are correspondingly arranged. The first magnet block (121) and the second magnet block (13) are magnetic poles of the same name. The movable block (12) above the upper convex plate (7) forms an automatic rotation structure through the second magnet block (13).

7. A construction method for quick-assembly suspended bottom formwork of cast-in-place pier concrete, based on the quick-assembly suspended bottom formwork of cast-in-place pier concrete as described in claim 6, comprising the following steps: S1: Move the multiple first template panels (1) and second template panels (2) that have been produced and processed to the assembly area, and assemble the two first template panels (1) and the two second template panels (2) into a template section. The accumulation of static electricity is avoided by setting the rubber strip (3). S2: The four corners of the suspended bottom template composed of two first template panels (1) and two second template panels (2) are fastened together by buckles. Then, the suspended bottom template composed of two first template panels (1) and two second template panels (2) is tied and fixed by ropes. Then, the tied ropes are lifted by an external lifting mechanism and one of the assembled templates is placed on top of the other assembled template. S3: Then the bottom of the first template panel (1) and the second template panel (2) are inserted into the corresponding bottom hole (5). The two adjacent first template panels (1) and the two adjacent second template panels (2) are in contact with each other through the nylon buffer pad (4), so as to avoid the generation and accumulation of static electricity and sparks, and to eliminate static electricity and suppress sparks at the splicing of the bottom template. S4: After the multi-segment hanging bottom template is spliced ​​up and down, the multiple moving blocks (12) on the same vertical plane are manually rotated outward in sequence. The moving blocks (12) drive the vertical rod (11) and the push plate (16) to rotate. When the push plate (16) rotates, it drives the roller at the outer end to push the connecting block (14) inward. The outer end of the inward-moving connecting block (14) is inserted into the corresponding connecting groove (17). S5: Next, while rotating the fixing screw (10), insert it into the multiple moving blocks (12) on the same vertical surface after rotating outward, and complete the entire assembly operation.

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