Bridge pier steel formwork connecting structure

Abstract

The invention discloses a bridge pier steel formwork connecting structure, and relates to the technical field of steel formworks. The adjacent formwork blocks are fixedly connected through the fixing assemblies; rolling balls are rotationally connected to the bottoms of the template blocks; the first blocking plate slides up and down in the containing groove; the shifting column protrudes out of the template block; the supporting column slides on the template block up and down; the rotating shaft is rotationally connected to the supporting column, and the rotating shaft slides on the template block up and down; a second plugging plate; when the first blocking plate slides downwards to abut against the ground, the control assembly controls the rotating shaft to rotate, so that the second blocking plates are sequentially aligned to the containing grooves in the circumferential direction; when the elastic driving parts and the second plugging plates are aligned to the containing grooves, the elastic driving parts drive the second plugging plates to be clamped into the containing grooves, at the moment, the connected second plugging plates abut against each other, and the second plugging plates abut against the first plugging plates and the formwork blocks respectively. The position of the bridge pier steel formwork can be conveniently adjusted.

Description

Technical Field

[0001] The present application relates to the technical field of steel formworks, and in particular to a pier steel formwork connection structure. Background Art

[0002] The pier steel formwork is a support and fixing tool used when pouring concrete piers. It is made of steel and has the characteristics of high strength and good stability. It can provide good construction conditions for pouring concrete and ensure the quality and stability of the piers.

[0003] At present, the steel formwork of bridge piers is usually an assembled prefabricated structure. The steel formwork of bridge piers is prefabricated in the factory, then transported to the construction platform, and then the steel formwork of the bridge piers is assembled and fixed, and then the concrete pouring operation can be carried out.

[0004] The construction of bridges requires high precision. It is difficult to install the pier steel formwork on the construction platform in one step. It is necessary to fine-tune the position of the pier steel formwork to ensure that the position of the pier meets the requirements. However, the pier steel formwork is heavy, and it is difficult and troublesome to adjust it. Summary of the invention

[0005] In order to facilitate the adjustment of the position of the pier steel formwork, the present application provides a pier steel formwork connection structure.

[0006] The present application provides a bridge pier steel formwork connection structure, which adopts the following technical solution: A bridge pier steel formwork connection structure comprises a formwork block, wherein there are a plurality of the formwork blocks and adjacent formwork blocks are arranged to abut against each other; A fixing component is arranged on the template block, and adjacent template blocks are fixedly connected by the fixing component; A rolling ball is rotatably connected to the bottom of the template block, and an accommodating groove extending in the circumferential direction is formed on the inner peripheral side wall of the template block; A first blocking plate, which is arranged on the template block and corresponds to the template block one by one, and the first blocking plates slide up and down in the receiving groove, and adjacent first blocking plates abut against each other; A toggle post is provided on the first blocking plate and slides up and down on the template block, the toggle post protrudes out of the template block, and the template block is provided with a linkage member that links the toggle post; A support column, arranged at the bottom of the toggle column, and the support column slides up and down on the template block; A rotating shaft, rotatably connected to the support column, the rotating shaft sliding up and down on the template block; A second blocking plate, disposed on the rotating shaft and corresponding one to one; A control component is arranged on the template block, and when the first blocking plate slides downward to abut against the ground, the control component controls the rotation shaft to rotate so that the second blocking plates are aligned with the receiving grooves in sequence along the circumferential direction; An elastic driving member is arranged on the template block. When the second sealing plate is aligned with the receiving groove, the elastic driving member drives the second sealing plate to be inserted into the receiving groove. At this time, the connected second sealing plates abut against each other, and the second sealing plates abut against the first sealing plate and the template block respectively.

[0007] By adopting the above technical solution, when the steel formwork of the bridge pier is erected, the formwork blocks are first transported to the bridge pier construction platform, and then the connection and fixation between the formwork blocks are carried out so that the rolling ball abuts on the ground, and the adjacent formwork blocks are connected and fixed by the fixing components. Then, according to the design position of the bridge pier, the bridge pier steel formwork structure formed by the formwork blocks is fine-tuned. At this time, the rolling ball rolls on the ground, which greatly reduces the difficulty of fine-tuning. When the fine-tuning is completed, the toggle column is pushed downward until the bottom of the first blocking plate abuts on the ground. During the downward movement of the first blocking plate, the control component controls the second blocking plate to rotate to the state of aligning with the receiving groove in turn, and is successively pulled and stuck into the receiving groove by the elastic driving member, so that the receiving groove is blocked between the first blocking plate and the second blocking plate. Finally, the concrete can be poured, and the blocking block can be removed after the concrete solidifies to complete the construction of the bridge pier. The entire installation process is simple, and the adjustment difficulty is greatly reduced by rolling the ball on the ground.

[0008] Optionally, the elastic driving member is a driving tension spring, and the driving tension spring is arranged on the supporting column; The driving tension spring pulls the rotating shaft to slide on the supporting column, and at this time, the second blocking plate is clamped in the accommodating groove.

[0009] By adopting the above technical solution and selecting a driving tension spring as the elastic driving member, the tension of the tension spring can be used to drive the rotating shaft to slide, thereby causing the second blocking plate to be inserted into the receiving groove. This design is not only simple in structure and easy to implement, but also can provide a stable and reliable driving force, ensuring that the second blocking plate can be accurately and quickly inserted into the receiving groove, thereby improving the blocking effect and construction efficiency.

[0010] Optionally, the support column is rotatably connected to a rotating sleeve, the rotating shaft is slidably connected to the rotating sleeve, a linkage block is arranged on the outer circumference of the rotating shaft, and the rotating sleeve is formed with a linkage groove for the linkage block to slide along the axial direction; The driving tension spring is located in the rotating sleeve, one end of the driving tension spring is connected to the end of the rotating shaft, and the other end is connected to the rotating sleeve.

[0011] By adopting the above technical solution, the support column is slidably connected to the rotating shaft through a rotating sleeve, and a linkage block is arranged on the outer peripheral side of the rotating shaft, and the rotating sleeve forms a linkage groove for the linkage block to slide. This design allows the rotating shaft to slide steadily and smoothly under the action of the driving tension spring. At the same time, the cooperation of the linkage block and the linkage groove also limits the rotation range of the rotating shaft, ensuring that the second blocking plate can be accurately aligned with the receiving groove and inserted. In addition, the sliding arrangement of the rotating shaft and the rotating sleeve can improve the utilization rate of space.

[0012] Optionally, the support column is provided with a friction ring, and the friction ring is sleeved on the outer peripheral side of the rotating sleeve, and the friction ring is in sliding contact with the rotating sleeve.

[0013] By adopting the above technical solution, a friction ring is arranged on the support column and is in sliding contact with the rotating sleeve, which can increase the friction force of the rotating sleeve on the support column and reduce the possibility of the rotating sleeve rotating under the action of the second blocking plate. This design improves the stability and reliability of the structure and ensures that the second blocking plate can be accurately rotated and aligned with the receiving groove when needed.

[0014] Optionally, the control assembly includes a control rope and a control block; The template block is formed with a slide groove for the support column to slide up and down, and the control block is arranged on the vertical groove wall of the slide groove. The control block corresponds to the support column one by one, and the control block is circumferentially and stepped close to the notch of the slide groove; The control rope is slidably passed through the support column, and the control rope is wound around the outer periphery of the rotating sleeve, and the number of windings of adjacent control ropes is the same. One end of the control rope is connected to the bottom of the control block, and the other end is connected to the outer periphery of the rotating sleeve; When the second blocking plate approaches the ground, the control rope pulls the rotating sleeve into a rotating state.

[0015] By adopting the above technical solution, the control assembly realizes precise control of the rotation of the rotating shaft through the cooperation of the control rope and the control block. When the second blocking plate approaches the ground, the control rope successively pulls the rotating sleeve into a rotating state, thereby driving the second blocking plate to align and snap into the receiving groove. This design is not only simple in structure and easy to operate, but also ensures that the second blocking plate can be accurately rotated and aligned with the receiving groove when needed, thereby improving construction efficiency and blocking effect.

[0016] Optionally, the fixing assembly includes a fixing bolt and a fixing nut; The outer wall of the template block is provided with a fixing plate, the fixing plates of adjacent template blocks are adjacent to and aligned with each other, the fixing bolts are passed through the fixing plates, and the fixing nuts are threadedly connected to the fixing bolts.

[0017] By adopting the above technical solution, the fixing assembly realizes a firm connection between adjacent template blocks through the cooperation of fixing bolts and fixing nuts. This design is not only simple in structure and easy to implement, but also can provide a stable and reliable connection force to ensure that the template blocks will not be separated or deformed due to external forces during the construction process. At the same time, the detachability of the fixing bolts and fixing nuts also facilitates the disassembly and reuse of the template.

[0018] Optionally, a sealing ring is arranged around the side wall of the second sealing plate.

[0019] By adopting the above technical solution, a sealing ring is arranged around the side wall of the second sealing plate, which can further improve the sealing effect and reduce the possibility of concrete slurry seeping out from the gap between the second sealing plate and the containing groove.

[0020] Optionally, a sealing strip is provided at the bottom of the first sealing plate.

[0021] By adopting the above technical solution and arranging a sealing strip at the bottom of the first blocking plate, the possibility of concrete slurry leaking out from the gap between the first blocking plate and the template block can be further reduced. This design not only improves the blocking effect, but also ensures that the concrete slurry inside the template block can be uniformly and completely solidified into a pier structure. At the same time, the replaceability of the sealing strip also facilitates maintenance and replacement of damaged parts.

[0022] Optionally, the linkage member is a linkage bar, and the linkage bar is arranged at the end of the toggle column.

[0023] By adopting the above technical solution, when in use, the toggle column is linked with the linkage bar, which makes it convenient to toggle the toggle column and greatly reduces the difficulty of operating the toggle column.

[0024] In summary, the present application includes at least one of the following beneficial effects: 1. When the pier steel formwork is erected, the pier steel formwork structure formed by the formwork blocks is fine-tuned according to the designed position of the pier. At this time, the ball rolls on the ground, which greatly reduces the difficulty of fine-tuning; 2. A sealing ring is arranged around the side wall of the second sealing plate, which can further improve the sealing effect and reduce the possibility of concrete slurry seeping out from the gap between the second sealing plate and the receiving groove. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 is a schematic diagram of the external structure of an embodiment of the present application; Figure 2 yes Figure 1 A magnified schematic diagram of part A; Figure 3 is a schematic diagram of an internal cross-section of an embodiment of the present application; Figure 4 yes Figure 3 A magnified schematic diagram of part B; Figure 5 yes Figure 3 Enlarged schematic diagram of part C of FIG.

[0026] Figure numerals: 1. template block; 11. rolling ball; 12. receiving groove; 13. slide groove; 14. fixed plate; 15. linkage strip; 2. fixing assembly; 21. fixing bolt; 22. fixing nut; 3. first blocking plate; 31. toggle column; 32. sealing strip; 4. support column; 41. rotating shaft; 411. driving tension spring; 412. linkage block; 42. rotating sleeve; 421. linkage groove; 43. friction ring; 5. second blocking plate; 51. sealing ring; 6. control assembly; 61. control rope; 62. control block. DETAILED DESCRIPTION

[0027] The following is combined with Figure 1-5 This application is described in further detail.

[0028] The present application embodiment discloses a bridge pier steel formwork connection structure. Figure 1 and Figure 2 The pier steel formwork connection structure includes a formwork block 1 and a fixing assembly 2. The formwork block 1 is a steel formwork structure, and the formwork block 1 is an arc-shaped plate structure. There are multiple formwork blocks 1 and they are evenly arranged along the circumference. Adjacent formwork blocks 1 abut against each other and surround each other to form a pouring space. After the formwork block 1 is installed, concrete is poured into the pouring space. After the concrete solidifies, the formwork block 1 is removed to complete the pier construction.

[0029] The fixing assembly 2 is arranged on the template block 1, and is used to connect and fix the template block 1. The fixing assembly 2 includes a fixing bolt 21 and a fixing nut 22. A fixing plate 14 is fixedly connected to the outer wall of the template block 1, and the fixing plates 14 of two adjacent template blocks 1 are adjacent to and aligned with each other. The fixing bolt 21 is passed through the relative fixing plates 14 of two adjacent template blocks 1, and the fixing nut 22 is threadedly connected to the fixing bolt 21, so that the connection and fixation between the two adjacent template blocks 1 is achieved. In order to improve the strength of the bridge pier steel template structure formed around the template blocks 1, the template blocks 1 can be further fixed by welding.

[0030] See also Figure 3 and Figure 4 A rotation groove is formed at the bottom of the template block 1, and a rolling ball 11 is provided on the template block 1. The rolling ball 11 is rotated and accommodated in the rotation groove. A clamping groove is formed on the side groove wall of the notch of the rotation groove, and the template block 1 is provided with a clamping ring, and the inner diameter of the clamping ring is smaller than the diameter of the tube ball. The clamping ring is clamped in the clamping groove, and part of the rolling ball 11 protrudes to the clamping ring. At this time, the rolling ball 11 rolls on the ground, so that there is a gap between the bottom of the template block 1 and the ground, which is convenient for fine-tuning the steel template of the bridge pier.

[0031] See also Figure 3 and Figure 5 , a receiving groove 12 is formed on the inner peripheral side wall and the bottom of the template block 1, and the receiving groove 12 extends in the circumferential direction. The pier steel template connection structure also includes a first blocking plate 3 and a toggle column 31, and the first blocking plate 3 corresponds to the template block 1 one by one. The first blocking plate 3 is an arc-shaped plate-like structure, and the first blocking plate 3 slides up and down in the receiving groove 12, and the inner diameter of the first blocking plate 3 is equal to the inner diameter of the template block 1. The toggle column 31 is fixed on the arc-shaped convex side of the first blocking plate 3, and the toggle column 31 corresponds to the first blocking plate 3 one by one, and the toggle column 31 slides up and down on the template block 1, and the toggle column 31 protrudes to the outside of the arc-shaped convex side of the template block 1. In the initial state, there is a gap between the first blocking plate 3 and the ground. When the fine adjustment of the pier steel formwork is completed, the first blocking plate 3 is driven to slide downward by pushing the toggle column 31 downward until the bottom of the first blocking plate 3 contacts the ground. At this time, the first blocking plate 3 blocks the gap between the bottom of the template block 1 and the ground, limiting the concrete from overflowing from the bottom of the template block 1. In order to facilitate the toggle column 31, the template block 1 is provided with a linkage member, which is a linkage bar 15. The linkage bar 15 is fixed to the side of the toggle column 31 facing away from the first blocking plate 3; after the template blocks 1 are fixedly connected, the linkage bar 15 is fixed to the toggle column 31 by welding. The linkage bar 15 is an arc-shaped strip structure, and adjacent linkage bars 15 are fixed by welding to form a ring structure.

[0032] The pier steel formwork connection structure also includes a support column 4, a rotating shaft 41 and a second blocking plate 5. The support column 4 is fixed on the top of the toggle column 31, and there is a one-to-one correspondence between the support column 4 and the toggle column 31. The support column 4 is perpendicular to the toggle column 31, and the support column 4 extends in the vertical direction. A slide groove 13 is formed in the formwork block 1, and the slide groove 13 extends in the vertical direction. The support column 4 slides up and down in the slide groove 13.

[0033] The support column 4 is rotatably connected to a rotating sleeve 42, and the rotating shaft 41 is slidably connected to the rotating sleeve 42 and is coaxially arranged. A linkage block 412 is fixedly connected to the outer peripheral side of the rotating shaft 41, and a linkage groove 421 extending along the axial direction is formed on the inner peripheral side wall of the rotating sleeve 42. The linkage block 412 is slidably connected to the linkage groove 421, so that the rotating shaft 41 and the rotating sleeve 42 are linked.

[0034] The rotating shaft 41 is perpendicular to the support column 4, and the rotating shaft 41 extends toward the pouring space. The second blocking plate 5 is an arc-shaped plate-like structure, and the end of the rotating shaft 41 away from the support column 4 is fixed to the middle position of the arc-shaped convex side of the second blocking plate 5, and the second blocking plate 5 corresponds to the rotating shaft 41 one by one. In the initial state, the central axis of the second blocking plate 5 is in a horizontally extended state.

[0035] The pier steel formwork connection structure also includes an elastic driving member and a control component 6. The elastic driving member is a driving tension spring 411, and the driving tension spring 411 corresponds to the rotating sleeve 42 one by one. The driving tension spring 411 is installed in the rotating sleeve 42, one end of the driving tension spring 411 is fixedly connected to the end of the rotating shaft 41 away from the first blocking plate 3, and the other end is fixedly connected to the inner wall of the rotating sleeve 42. In the initial state, the driving tension spring 411 is elastically released, pulling the rotating shaft 41 to slide into the rotating sleeve 42, so that the arc-shaped convex side of the second blocking plate 5 is respectively abutted against the template block 1 and the first blocking plate 3. In order to ensure that the central axis of the second blocking plate 5 is in a horizontal state, the support column 4 is fixedly connected with a friction ring 43, which is arranged around the outer peripheral side of the rotating sleeve 42, and the friction ring 43 and the rotating sleeve 42 are rotatably connected. When in use, there is friction between the friction ring 43 and the rotating sleeve 42, which limits the possibility of the rotating sleeve 42 rotating under the action of the gravity of the second blocking plate 5.

[0036] The control component 6 is arranged on the template block 1. When the first sealing plate 3 slides downward to abut the ground, the control component 6 controls the rotating shaft 41 to rotate, so that the second sealing plate 5 is aligned with the receiving groove 12 in sequence along the circumferential direction. At this time, the driving tension spring 411 continues to pull the rotating shaft 41 to slide into the rotating sleeve 42 until the second sealing plate 5 is inserted into the receiving groove 12; when the second sealing plate 5 is inserted into the receiving groove 12, the second sealing plate 5 respectively abuts against the first sealing plate 3 and the template block 1, and the adjacent second sealing plates 5 abut against each other. At this time, the second sealing plate 5 and the first sealing plate 3 cooperate with each other to seal the receiving groove 12, thereby limiting the flow of concrete into the receiving groove 12 and reducing the possibility of concrete leakage.

[0037] The control assembly 6 includes a control rope 61 and a control block 62, and the control block 62 is fixedly connected to the vertical side wall of the chute 13. The control block 62 is located directly above the rotating sleeve 42, and there is a one-to-one correspondence between the control block 62 and the rotating sleeve 42. The control blocks 62 are circumferentially and step-shaped close to the notch of the chute 13, that is, the distance between the control blocks 62 and the rotating sleeve 42 distributed along the circumferential trajectory is continuously reduced.

[0038] The control rope 61 adopts an elastic rope structure, and the control rope 61 is slidably inserted into the support column 4, and the control rope 61 is wound around the outer periphery of the rotating sleeve 42. The number of windings of adjacent control ropes 61 is the same, and the lengths of the control ropes 61 are equal. One end of the control rope 61 is fixedly connected to the bottom of the control block 62, and the other end is fixedly connected to the outer periphery of the rotating sleeve 42. When the second blocking plate 5 approaches the ground, the control rope 61 with the largest distance between the control block 62 and the rotating sleeve 42 first enters the state of being tightened and pulling the rotating sleeve 42 to rotate, and then the control rope 61 enters the state of being tightened and pulling the rotating sleeve 42 in sequence according to the distance between the control block 62 and the rotating sleeve 42 from large to small; when the rotating sleeve 42 rotates in sequence, the corresponding second blocking plate 5 follows the rotating sleeve 42 to rotate, and the first moving second blocking plate 5 moves to a state aligned with the accommodating groove 12. Due to the restriction of the first blocking plate 3, the second blocking plate 5 is not stuck in the accommodating groove 12; then when the first blocking plate 3 continues to move downward, the control rope 61 corresponding to the first second blocking plate 5 enters an elastic stretching state; when the first blocking plate 3 continues to move downward, the second second blocking plate 5 flips and moves to abut against the previous adjacent second blocking plate 5 and the corresponding control rope 61 enters an elastic stretching state , and so on, the third second blocking plate 5 flips to a state aligned with the receiving groove 12 and the corresponding control rope 61 enters an elastically stretched state, and the fourth second blocking plate 5 flips and moves to a state abutting the third second blocking plate 5, until the first blocking plate 3 abuts the ground, the driving tension spring 411 elastically contracts and pulls the rotating shaft 41, first driving the first second blocking plate 5 and the third second blocking plate 5 to be inserted into the receiving groove 12, and then the control ropes 61 corresponding to the second second blocking plate 5 and the fourth second blocking plate 5 are elastically released respectively, so that the corresponding second blocking plate 5 flips and moves to a state aligned with the receiving groove 12, and finally, the driving tension springs 411 corresponding to the second second blocking plate 5 and the fourth second blocking plate 5 elastically contract and pull the corresponding rotating shaft 41, so that the second second blocking plate 5 and the fourth second blocking plate 5 are inserted into the receiving groove 12.

[0039] In order to further reduce the possibility of concrete leakage, a sealing strip 32 is embedded and fixed on the bottom end face of the first sealing plate 3, and the sealing strip 32 abuts against the ground; a sealing ring 51 is embedded around the outer wall of the second sealing plate 5, and the sealing ring 51 abuts against the first sealing plate 3, the top groove wall of the accommodating groove 12 and the sealing ring 51 of the adjacent second sealing plate 5 respectively.

[0040] The implementation principle of a bridge pier steel formwork connection structure in the embodiment of the present application is: When erecting the steel formwork of the pier, first transport the formwork block 1 to the pier construction platform, then connect and fix the formwork blocks 1 so that the ball 11 abuts against the ground, and the adjacent formwork blocks 1 are connected and fixed by fixing bolts 21 and fixing nuts 22. Then, according to the design position of the pier, fine-tune the pier steel formwork structure formed by the formwork block 1. At this time, the ball 11 rolls on the ground, which greatly reduces the difficulty of fine-tuning. When the fine-tuning is completed, push the toggle column 31 downward until the bottom of the first blocking plate 3 abuts against the ground. During the downward movement of the first blocking plate 3, the second blocking plate 5 is rotated to the state of aligning with the receiving groove 12 in turn, and is successively pulled and stuck into the receiving groove 12, so that the receiving groove 12 is blocked between the first blocking plate 3 and the second blocking plate 5. Finally, pour the concrete, wait for the concrete to solidify, then remove the blocking block, and complete the construction of the pier.

[0041] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A bridge pier steel formwork connection structure, characterized in that: It comprises a template block (1), wherein there are a plurality of template blocks (1) and adjacent template blocks (1) are arranged to abut against each other; A fixing component (2) is arranged on the template block (1), and adjacent template blocks (1) are fixedly connected via the fixing component (2); A rolling ball (11) is rotatably connected to the bottom of the template block (1), and an inner peripheral side wall of the template block (1) is formed with a receiving groove (12) extending in the circumferential direction; First blocking plates (3) are arranged on the template blocks (1) and correspond one to one, the first blocking plates (3) slide up and down in the receiving grooves (12), and adjacent first blocking plates (3) abut against each other; A toggle post (31) is provided on the first blocking plate (3) and slides up and down on the template block (1); the toggle post (31) protrudes out of the template block (1); and the template block (1) is provided with a linkage member that is linked to the toggle post (31); A support column (4) is arranged at the bottom of the shifting column (31), and the support column (4) slides up and down on the template block (1); A rotating shaft (41) is rotatably connected to the support column (4), and the rotating shaft (41) slides up and down on the template block (1); A second blocking plate (5) is arranged on the rotating shaft (41) in one-to-one correspondence; A control component (6) is arranged on the template block (1), and when the first blocking plate (3) slides downward to abut against the ground, the control component (6) controls the rotation shaft (41) to rotate so that the second blocking plates (5) are aligned with the receiving grooves (12) in sequence along the circumferential direction; An elastic driving member is arranged on the template block (1), and when the second sealing plate (5) is aligned with the receiving groove (12), the elastic driving member drives the second sealing plate (5) to snap into the receiving groove (12), and at this time, the second sealing plates (5) are connected to each other, and the second sealing plates (5) respectively abut against the first sealing plate (3) and the template block (1).

2. The pier steel formwork connection structure according to claim 1 is characterized by: The elastic driving member is a driving tension spring (411), and the driving tension spring (411) is arranged on the supporting column (4); The driving tension spring (411) pulls the rotating shaft (41) to slide on the supporting column (4), and at this time the second blocking plate (5) is inserted into the receiving groove (12).

3. The pier steel formwork connection structure according to claim 2 is characterized in that: The support column (4) is rotatably connected to a rotating sleeve (42), the rotating shaft (41) is slidably connected to the rotating sleeve (42), a linkage block (412) is provided on the outer peripheral side of the rotating shaft (41), and the rotating sleeve (42) is formed with a linkage groove (421) for the linkage block (412) to slide along the axial direction; The driving tension spring (411) is located inside the rotating sleeve (42); one end of the driving tension spring (411) is connected to the end of the rotating shaft (41), and the other end is connected to the rotating sleeve (42).

4. The pier steel formwork connection structure according to claim 3 is characterized by: The support column (4) is provided with a friction ring (43), and the friction ring (43) is sleeved on the outer peripheral side of the rotating sleeve (42), and the friction ring (43) and the rotating sleeve (42) are in sliding contact.

5. The pier steel formwork connection structure according to claim 3 is characterized by: The control assembly (6) comprises a control rope (61) and a control block (62); The template block (1) is formed with a slide groove (13) for the support column (4) to slide up and down, the control block (62) is arranged on the vertical groove wall of the slide groove (13), the control block (62) corresponds to the support column (4) one by one, and the control block (62) is close to the notch of the slide groove (13) in a circumferential direction and in a stepped shape; The control rope (61) is slidably inserted into the support column (4), the control rope (61) is wound around the outer periphery of the rotating sleeve (42), the number of windings of adjacent control ropes (61) is the same, one end of the control rope (61) is connected to the bottom of the control block (62), and the other end is connected to the outer periphery of the rotating sleeve (42); When the second blocking plate (5) approaches the ground, the control rope (61) pulls the rotating sleeve (42) into a rotating state.

6. The pier steel formwork connection structure according to claim 1 is characterized by: The fixing assembly (2) comprises a fixing bolt (21) and a fixing nut (22); The outer wall of the template block (1) is provided with a fixing plate (14), the fixing plates (14) of adjacent template blocks (1) are adjacent to and aligned with each other, the fixing bolts (21) are passed through the fixing plates (14), and the fixing nuts (22) are threadedly connected to the fixing bolts (21).

7. The pier steel formwork connection structure according to claim 1 is characterized by: A sealing ring (51) is arranged around the side wall of the second sealing plate (5).

8. The bridge pier steel formwork connection structure according to claim 1, characterized in that: A sealing strip (32) is provided at the bottom of the first sealing plate (3).

9. The bridge pier steel formwork connection structure according to claim 1, characterized in that: The linkage member is a linkage bar (15), and the linkage bar (15) is arranged at the end of the toggle column (31).

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