A deformed joint formwork support structure and construction method

Abstract

The application relates to the technical field of building construction, in particular to a deformation joint formwork supporting structure and a construction method. The deformation joint formwork supporting structure comprises a supporting device, the supporting device comprises a protection box body, a tensioning screw rod, a tensioning sleeve, a supporting component and a force transmission rod, the protection box body is provided with a protection cavity, opposite two side walls of the protection box body are provided with through grooves communicated with the protection cavity, the axial direction of the tensioning screw rod is parallel to the length direction of the protection box body, the tensioning screw rod is rotationally connected to the inner wall of the protection cavity, the tensioning screw rod is provided with a first threaded section and a second threaded section, the threaded directions of the first threaded section and the second threaded section are opposite, the tensioning sleeve is provided with two and is threadedly sleeved with the first threaded section and the second threaded section respectively, the tensioning sleeve is built-in the protection cavity, one end of the force transmission rod is hingedly connected to the tensioning sleeve, and the other end of the force transmission rod is hingedly connected to the supporting component. The application has the effect of enhancing the supporting rigidity and strength of the formwork in the deformation joint.

Description

Technical Field

[0001] This application relates to the field of building construction technology, and in particular to a formwork support structure for expansion joints and a construction method thereof. Background Technology

[0002] Expansion joints are structural joints designed to accommodate deformations in buildings caused by factors such as temperature, humidity, and earthquakes. The width of an expansion joint between two beams and columns is typically 150-200mm. In traditional construction, extruded polystyrene (EPS) boards (or other foam boards) are often used as insulation materials on the inside of the formwork. However, the formwork often lacks sufficient keel support, resulting in insufficient rigidity.

[0003] When concrete is poured simultaneously from both sides, the vibration process can cause the concrete to be squeezed to the opposite side, leading to quality problems such as bulging and displacement of the concrete structure on both sides of the expansion joint. Formwork removal becomes difficult, requiring manual labor to crush and clean the extruded polystyrene boards, causing significant disruption and waste to the construction schedule. This traditional construction method is not only inefficient but also increases construction costs, thus requiring further improvement. Summary of the Invention

[0004] In order to enhance the support rigidity and strength of the formwork inside the expansion joint and reduce the risk of quality accidents such as formwork bulging and displacement, one of the purposes of this application is to provide a support structure for the formwork of the expansion joint.

[0005] The technical solution for the expansion joint template support structure provided in this application is as follows: A formwork support structure for expansion joints includes several column formworks surrounding and forming two casting cavities, column hoops that are fixed to the column formworks around the two casting cavities, and a support device disposed between the two inner column formworks. An expansion joint exists between the two inner column formworks, and the support device is built into the expansion joint. Multiple column hoops are provided and spaced apart along the height direction of the column formworks. The support device includes a protective housing, tie rods, tie sleeves, support components, and force transmission rods. The protective housing has a protective cavity, and both opposite side walls of the protective housing have… The through groove connects to the protective cavity. The axial direction of the tie rod is parallel to the length direction of the protective box. The tie rod is rotatably connected to the inner wall of the protective cavity. The tie rod has a first threaded section and a second threaded section. The thread directions of the first threaded section and the second threaded section are opposite. Two tie sleeves are provided and are respectively threaded onto the first threaded section and the second threaded section. The tie sleeves are built into the protective cavity. Two support members are provided and respectively abut against the outer wall of the two inner column templates. One end of the force transmission rod is hinged to the tie sleeve, and the other end of the force transmission rod passes through the through groove and is hinged to the support member.

[0006] By adopting the above technical solution, the protective box is installed on the column hoop and built into the expansion joint. Workers only need to rotate the tie rod clockwise. The two tie sleeves, constrained by the threads of the first and second threaded sections respectively, slide synchronously towards each other. Through the force transmission rod, the two support components slide synchronously away from each other, thus pressing the support components against the outer wall of the column formwork of the expansion joint, providing support for the column formwork, enhancing the rigidity and strength of the formwork within the expansion joint, and reducing the risk of quality accidents such as formwork bulging and displacement. After the pouring construction is completed, workers only need to rotate the tie rod counterclockwise to allow the support components to slide back to their original position, achieving simple dismantling. Furthermore, the tie rod being built into the protective cavity effectively prevents the first and second threaded sections on the tie rod from being exposed to the external environment and becoming contaminated, thus improving the service life of the support device.

[0007] Preferably, the support member has a sliding cavity on the side near the protective housing, the sliding cavity extends along the length of the support member, the support member is provided with a hinge block that slides in the sliding cavity, the force transmission rod is hinged to the hinge block, and the support member is provided with an adjustment component for adjusting the sliding position of the hinge block.

[0008] By adopting the above technical solution, the sliding position of the hinge block is adjusted by adjusting the components, so that the initial swing angle of the force transmission rods located at both ends of the tie rod is different, thereby adjusting the width of the two support components on the same side, which meets the support requirements that the expansion joint is narrow at one end and wide at the other end, that is, the two column formworks are not parallel, that is, the top view shape is a trapezoidal joint, which greatly improves the adaptability and reusability of the support device.

[0009] Preferably, the upper end face of the support member is provided with a limiting hole communicating with the sliding cavity, and multiple limiting holes are provided and spaced apart along the length direction of the support member. The upper end face of the hinge block is provided with an insertion hole, and the adjustment component includes an adjustment pin inserted into the limiting hole and the insertion hole.

[0010] By adopting the above technical solution, after the sliding position of the hinge block is adjusted and the insertion hole and the limiting hole on the hinge block are aligned, the adjusting pin is inserted into the limiting hole and the insertion hole in sequence to fix the position of the hinge block.

[0011] Preferably, the adjusting assembly includes an adjusting screw rotatably connected to the end face of the supporting member, the axial direction of the adjusting screw being parallel to the sliding direction of the hinge block, and the adjusting screw threaded through the hinge block.

[0012] By adopting the above technical solution, the hinge block slides along the axial direction of the adjusting screw due to the thread restriction of the adjusting screw when the adjusting screw is rotated.

[0013] Preferably, the pull screw includes a first lead screw, a second lead screw, and a linkage sleeve rotatably connected to the inner wall of the protective cavity. The linkage sleeve is located between the first lead screw and the second lead screw. The first lead screw, the second lead screw, and the linkage sleeve are coaxially arranged. A first threaded section is provided on the outer peripheral wall of the first lead screw, and a second threaded section is provided on the outer peripheral wall of the second lead screw. Both ends of the linkage sleeve are coaxially provided with stop grooves. Both the first lead screw and the second lead screw are provided with mounting cavities along the axial direction. Both the first lead screw and the second lead screw are provided with movable rods that slide along the axial direction and are connected to the mounting cavities. The movable rods are circumferentially linked with the first lead screw / second lead screw. A stop block inserted into the stop groove is fixedly connected to the end of the movable rod. The cross-section of the stop block and the stop groove is polygonal. Both the first lead screw and the second lead screw are provided with control components for driving the movable rod to slide.

[0014] By adopting the above technical solution, when the expansion joint is trapezoidal in plan view, in the initial state, the control component drives the movable rod to slide towards the linkage sleeve, causing the stop block on the end of the movable rod to be inserted into the stop groove, realizing the circumferential linkage of the first and second lead screws, and the two support components are in a parallel state. At this time, rotating the first or second lead screw achieves synchronous rotation of all three. The two tie sleeves are respectively restricted by the threads of the first and second threaded sections and slide synchronously towards each other. Through the force transmission rod, the two support components are driven to slide synchronously away from each other, so that one end of the support component first contacts the outer side of the column template located at the bottom. The other end of the support member does not abut against the column template, forming an unloaded end. Then, the control component drives the movable rod to slide away from the linkage sleeve, causing the stop block and stop groove on the movable rod to disengage, releasing the circumferential linkage restriction of the first and second lead screws. Finally, the lead screw located on the bottom side of the trapezoidal joint is rotated separately, driving the tie sleeve connected to it to move closer to the linkage sleeve. This pushes the unloaded end of the support member to swing around the hinge point at the other end through the force transmission rod, so that the outer wall of the support member fits against the outer wall of the column template on the bottom side, satisfying the requirement that the expansion joint is narrow at one end and wide at the other, i.e., the two column templates are not parallel, greatly improving the adaptability and reusability of the support device.

[0015] Preferably, the ends of the first / second lead screw are exposed outside the protective housing. The first / second lead screw is provided with a clearance groove communicating with the mounting cavity on the side wall of the protective housing. The control component includes a single-handle grip fixedly connected to the outer wall of the first lead screw, a control rod disposed on the movable rod and slidably passing through the clearance groove, and an elastic element that forces the control rod to slide towards the protective housing in its normal state. The axial direction of the single-handle grip is parallel to the radial direction of the first / second lead screw. Two single-handle grips are provided and symmetrically arranged along the axis of the first / second lead screw. The control rod is located between the single-handle grip and the end face of the protective housing and is parallel to the single-handle grip. A double-handle grip is fixedly connected to the outer peripheral wall of the end of the first / second lead screw. Two double-handle grips are provided and symmetrically arranged along the axis of the first / second lead screw. The axial direction of the double-handle grip is perpendicular to the axial direction of the single-handle grip.

[0016] By adopting the above technical solution, under normal conditions, the elastic element forces the control rod to slide towards the protective housing, thereby driving the movable rod to slide towards the linkage sleeve. This causes the stop block on the end of the movable rod to insert into the stop groove, achieving circumferential linkage between the first and second lead screws. When synchronous rotation of the first and second lead screws is required, the operator can rotate either the first or second lead screw by holding the double-rotor lever. When individual rotation of the first or second lead screw is required, the operator... By gripping the single-rotation lever and applying force to the control lever with your fingers, the control lever slides towards the single-rotation lever, thereby causing the movable lever to slide away from the linkage sleeve. This causes the stop block at the end of the movable lever to slide out of the stop groove, releasing the circumferential linkage restriction of the first and second lead screws. At this time, the elastic element undergoes elastic deformation and has elastic potential energy. Then, the single-rotation lever is used to apply torque to the first / second lead screw to rotate. After releasing the single-rotation lever, the elastic element forces the movable lever to slide back to its original position, causing the stop block to be reinserted into the stop groove.

[0017] Preferably, the lower surfaces of both ends of the protective box are provided with connecting screws, and the upper end face of the column hoop is provided with a through mounting hole for the connecting screws to pass through. The mounting hole is a strip-shaped hole, and the connecting screw is threadedly connected to a limiting nut that abuts against the upper end face of the column hoop.

[0018] By adopting the above technical solution, the protective box and the column hoop are connected by connecting screws and limiting nuts. On the one hand, this eliminates the need for workers to continuously support the protective frame during the erection process, improving the ease of erection and reducing the labor intensity of workers. On the other hand, by rotating the limiting nut, the limiting nut can slide along the axis of the connecting screw, thereby adjusting the insertion depth of the connecting screw into the mounting hole, thus adjusting the height of the protective box, and consequently the height of the supporting components, meeting the needs under different construction conditions.

[0019] Preferably, the upper end of the connecting screw can be folded and connected to the protective box. When the connecting screw is folded to a horizontal state, the axial direction of the connecting screw is parallel to the length direction of the protective box.

[0020] By adopting the above technical solution, after the pouring construction is completed and the support device is removed, the connecting screw is rotated and folded so that the free end of the connecting screw rotates and folds towards the middle of the protective box to a horizontal state, which effectively reduces the height of the support device, thereby reducing the volume occupied by the support device and facilitating the transportation and storage of the support device.

[0021] In order to enhance the support rigidity and strength of the formwork inside the expansion joint and reduce the risk of quality accidents such as formwork bulging and displacement, the second objective of this application is to provide a construction method for the formwork support structure of the expansion joint.

[0022] A construction method for an expansion joint formwork support structure includes the following steps: Step S1: Install column formwork; Step S2: Install column clamps; Step S3: Install the support device. By rotating the tie rod counterclockwise, the two tie sleeves are simultaneously slid away from each other due to the threaded restriction of the first and second threaded sections, respectively. The force transmission rod drives the two support components to simultaneously slide towards each other, reducing the width of the support device to be able to freely enter the expansion joint. Then, by rotating the tie rod clockwise, the two tie sleeves are simultaneously slid towards each other due to the threaded restriction of the first and second threaded sections, respectively. The force transmission rod drives the two support components to simultaneously slide away from each other, thereby making the support components press against the outer wall of the column template of the expansion joint. Step S4: Concrete pouring. Concrete is poured into the pouring cavity. Step S5: Dismantle the support device; By rotating the counterclockwise tie rod, the two tie sleeves are simultaneously slid away from each other due to the thread restriction of the first thread section and the second thread section respectively. The force transmission rod drives the two support components to slide towards each other simultaneously, so that the support components are separated from the outer wall of the column template, and then the support device can be pulled out. Step S6, column hoop and formwork removal, follows the principle of removing supports before removing them, removing non-load-bearing parts before load-bearing parts, and removing them from top to bottom.

[0023] In summary, this application includes at least one of the following beneficial technical effects: 1. The protective box is installed on the column hoop and built into the expansion joint. Workers only need to rotate the tie rod clockwise. The two tie sleeves, constrained by the threads of the first and second threaded sections respectively, slide synchronously towards each other. Through the force transmission rod, the two support components slide synchronously away from each other, thus pressing the support components against the outer wall of the column formwork of the expansion joint, providing support for the column formwork, enhancing the rigidity and strength of the formwork within the expansion joint, and reducing the risk of quality accidents such as formwork bulging and displacement. After the pouring is completed, workers only need to rotate the tie rod counterclockwise to allow the support components to slide back to their original position, achieving simple dismantling. Furthermore, the tie rod is built into the protective cavity, effectively preventing the first and second threaded sections on the tie rod from being exposed to the external environment and potentially contaminated, thus improving the service life of the support device. 2. By adjusting the sliding position of the hinge block by adjusting the components, the initial swing angles of the force transmission rods located at both ends of the tie rod are different, thereby adjusting the width of the two support components on the same side. This satisfies the support requirement that the expansion joint is narrow at one end and wide at the other, i.e., the two column formworks are not parallel, i.e., the top view shape is a trapezoidal joint, which greatly improves the adaptability and reusability of the support device. 3. The connection between the protective box and the column hoop is achieved by connecting screws and limiting nuts. On the one hand, this eliminates the need for workers to continuously support the protective frame during the erection process, improving the ease of erection and reducing the labor intensity of workers. On the other hand, by rotating the limiting nut, the limiting nut can slide along the axial direction of the connecting screw, thereby adjusting the insertion depth of the connecting screw into the mounting hole, thus adjusting the height of the protective box, and consequently the height of the supporting components, meeting the needs under different construction conditions. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of a deformation joint template support structure in Example 1.

[0025] Figure 2 This is a schematic diagram of the overall structure of the support device in Embodiment 1.

[0026] Figure 3 This is a schematic diagram of the structure of the pull sleeve and adjustment assembly in Example 1.

[0027] Figure 4 This is a schematic diagram of the adjustment component in Example 2.

[0028] Figure 5 This is a schematic diagram of the support device in Embodiment 3.

[0029] Figure 6 This is a schematic diagram of the tie rod structure in Example 3.

[0030] Figure 7 This is a schematic diagram of the stop block and stop groove in Example 3.

[0031] Figure 8 This is a schematic diagram of the single-rotor lever and control lever in Example 4.

[0032] Figure 9 This is a schematic diagram of the protective box in Example 5.

[0033] Explanation of reference numerals in the attached drawings: 1. Column formwork; 2. Column hoop; 3. Support device; 31. Protective box; 311. Protective cavity; 312. Through groove; 313. Mounting base; 32. Tie rod; 321. First lead screw; 322. Second lead screw; 323. Linkage sleeve; 324. Stop groove; 325. Movable rod; 326. Stop block; 327. Clearance groove; 33. Tie sleeve; 331. Tie channel steel; 332. Threaded sleeve; 34. Support component; 341. 342. Hinge block; 343. Limiting hole; 344. Insertion hole; 345. Sealing plate; 36. Force transmission rod; 37. Steel pull ring; 38. Connecting screw; 39. Hinge shaft; 30. Limiting nut; 41. Adjusting assembly; 42. Adjusting screw; 53. Knob; 54. Control assembly; 55. Single-rotor grip rod; 511. Anti-slip airbag ring; 512. Air passage; 513. Mounting cylinder; 514. Airbag body; 52. Control rod; 521. Pressure block; 53. Spring; 54. Double-rotor grip rod. Detailed Implementation

[0034] The following is in conjunction with the appendix Figure 1-9 This application will be described in further detail.

[0035] Example 1: This application discloses a formwork support structure for expansion joints, referring to... Figure 1 The system includes several column formwork 1s that enclose and form two pouring cavities, column hoops 2 that are fixed to the column formwork 1s around the two pouring cavities, and support devices 3 positioned between the two inner column formwork 1s. The pouring cavities are used for pouring concrete. Multiple column hoops 2s are provided and spaced apart along the height of the column formwork 1s. An expansion joint is provided between the two inner column formwork 1s. The support devices 3 are integrated into the expansion joints. Multiple sets of support devices 3 are provided, with the number of support devices 3 corresponding to the number of column hoops 2s. Each support device 3 is located above its corresponding column hoop 2.

[0036] Reference Figure 2 , Figure 3Each set of support devices 3 includes a protective housing 31, a tie rod 32, a tie sleeve 33, a support member 34, and a force transmission rod 35. The protective housing 31 has a protective cavity 311, and each of the two opposite outer walls of the protective housing 31 has a through groove 312 communicating with the protective cavity 311. The axial direction of the tie rod 32 is parallel to the length direction of the protective housing 31. The tie rod 32 is a steel tie rod and is rotatably connected to the inner wall of the protective cavity 311. The end of the tie rod 32 rotatably passes through the end face of the protective housing 31. A force-applying component is fixedly connected to the end of the tie rod 32. In this embodiment, the force-applying component is a steel pull ring 36.

[0037] The tie rod 32 is built into the outer peripheral wall of the protective cavity 311 and has a first threaded section and a second threaded section, with the threads of the first threaded section and the second threaded section having opposite directions. The tie sleeve 33 is built into the protective cavity 311 and includes a tie channel steel 331 and a threaded sleeve 332 fixedly inserted through the tie channel steel 331. There are two tie sleeves 33, and the threaded sleeves 332 on the two tie sleeves 33 are respectively threaded onto the first threaded section and the second threaded section.

[0038] Two support members 34 are provided, each abutting against the outer wall of one of the two inner column templates 1. The support members 34 are channel steel, so that the side of the support member 34 near the protective box 31 has a sliding cavity, and the sliding cavity extends along the length of the support member 34. The support member 34 is provided with a pair of hinge blocks 341 that slide within the sliding cavity. One end of the force transmission rod 35 is hinged to the tie channel steel 331 by a pin, and the other end of the force transmission rod 35 passes through the through slot 312 and is hinged to the hinge block 341 by a pin.

[0039] The support member 34 is provided with an adjustment component 4 for adjusting the sliding position of the hinge block 341. A limiting hole 342 communicating with the sliding cavity is provided on the upper end face of the support member 34. Multiple limiting holes 342 are provided and spaced apart along the length of the support member 34. An insertion hole 343 is provided on the upper end face of the hinge block 341. The adjustment component 4 includes an adjustment pin inserted into the limiting hole 342 and the insertion hole 343. After the sliding position of the hinge block 341 is adjusted, and the insertion hole 343 and the limiting hole 342 on the hinge block 341 are aligned, the adjustment pin is sequentially inserted into the limiting hole 342 and the insertion hole 343 to fix the position of the hinge block 341.

[0040] This application also discloses a construction method for an expansion joint formwork support structure, including the following steps: Step S1: Install column formwork 1. Apply a cement mortar leveling layer according to the elevation. Make irregular positioning piers according to the position lines to ensure the accuracy of the column axis edge line and elevation, or according to the layout position. Pre-assemble column formwork 1 into one piece on one side (one side of one side has a corner piece) or two pieces on two sides according to the size of the column. After positioning, tie it temporarily to the main reinforcement with lead wire. Use U-shaped clips to connect and clamp the column formwork 1 on both sides. After installing the two sides, install the other two sides of column formwork 1. Weld support rods to the main reinforcement at 5cm to 8cm above the ground on all four sides of the column to support the column formwork 1 from all four sides to prevent displacement.

[0041] Step S2: Install column hoops 2. Column hoops 2 can be made of angle steel, steel pipes, etc. When wooden formwork 1 is used, steel-wood hoops can be made using bolts and square timber. The size and spacing of column hoops 2 should be determined according to the size of the column formwork and the magnitude of the lateral pressure. Multiple column hoops 2 should be installed sequentially from bottom to top.

[0042] Step S3: Install the support device 3. Determine the installation position and spacing of the support device 3 and mark the location. By rotating the tie rod 32 counterclockwise, the two tie sleeves 33 are simultaneously slid away from each other due to the threaded restraint of the first and second threaded sections, respectively. Through the force transmission rod 35, the two support components 34 are simultaneously slid closer to each other, reducing the width of the support device 3 to be able to freely enter the gap between the column templates 1 on both sides of the expansion joint. Move the support device 3 to the design position and adjust the angle of the support device 3 to make it perpendicular to the direction of the structural column, ensuring that the force on the support device 3 is reasonable after it is opened. Then, by rotating the tie rod 32 clockwise, the two tie sleeves 33 are respectively subjected to the threaded restraint of the first and second threaded sections, respectively. The threaded restraints of the first and second threaded sections slide synchronously toward each other, and through the force transmission rod 35, drive the two support members 34 to slide synchronously toward each other, so that the support members 34 are pressed against the outer wall of the column template 1 of the expansion joint; when the expansion joint is trapezoidal in plan view, the sliding position of the hinge block 341 is adjusted by the adjustment component 4, so that the initial swing angles of the force transmission rods 35 located at both ends of the tie rod 32 are different, thereby adjusting the width of the two support members 34 on the same side, satisfying the support requirement that the expansion joint is narrow at one end and wide at the other, that is, the two column templates 1 are not parallel, that is, the plan view shape is trapezoidal, which greatly improves the adaptability and reusability of the support device 3.

[0043] Step S4: Concrete pouring. Concrete is poured into the cavity. During and for a period of time after concrete pouring, the column formwork 1 may experience settlement and displacement due to pressure, affecting the structural forming quality. Excessive changes may even lead to collapse. To promptly reflect changes in the column formwork 1 support system and prevent accidents, settlement and displacement monitoring of the column formwork 1 support system is necessary.

[0044] Step S5: Removal of Support Device 3. Support device 3 can only be removed after the concrete on both sides of the expansion joint has reached the specified and design strength. The removal sequence of support device 3 is from top to bottom of the column structure. By rotating the tie rod 32 counterclockwise, the two tie sleeves 33 are simultaneously slid away from each other due to the threaded restraint of the first and second threaded sections, respectively. Through the force transmission rod 35, the two support components 34 are simultaneously slid closer to each other, causing the support components 34 to detach from the outer wall of the column formwork 1. Then, support device 3 can be pulled out. After removal, support device 3 should be thoroughly inspected for damage. If no damage is found, it can be reused; otherwise, it can be repaired to meet design requirements and reused.

[0045] Step S6, column hoop 2, and formwork removal, follow the principles of removing supports before removing them, removing non-load-bearing parts before load-bearing parts, and removing from top to bottom.

[0046] Example 2: The difference from Example 1 is that, referring to Figure 4 The support member 34 has sealing plates 344 fixedly connected to both ends. The adjustment assembly 4 includes an adjustment screw 41 rotatably connected to the sealing plate 344 and a knob 42 fixedly connected to the end of the adjustment screw 41. The axis of the adjustment screw 41 is parallel to the sliding direction of the hinge block 341, and the adjustment screw 41 is threaded through the hinge block 341. By rotating the adjustment screw 41 through the knob 42, the hinge block 341 slides along the axis of the adjustment screw 41 under the thread constraint of the adjustment screw 41, so that the initial swing angles of the force transmission rods 35 located at both ends of the tie screw 32 are different, thereby adjusting the width of the two support members 34 on the same side. This meets the support requirement that the expansion joint is narrow at one end and wide at the other, that is, the two column templates 1 are not parallel, i.e., the top view shape is a trapezoidal joint, which greatly improves the adaptability and reusability of the support device 3.

[0047] Example 3: The difference from Example 1 is that, referring to Figure 5 , Figure 6 The pull screw 32 includes a first lead screw 321, a second lead screw 322, and a linkage sleeve 323 rotatably connected to the inner wall of the protective cavity 311. A mounting seat 313 located between the first lead screw 321 and the second lead screw 322 is fixedly connected inside the protective cavity 311. The linkage sleeve 323 rotatably passes through the mounting seat 313. The first lead screw 321, the second lead screw 322, and the linkage sleeve 323 are coaxially arranged. A first threaded section is provided on the outer peripheral wall of the first lead screw 321, and a second threaded section is provided on the outer peripheral wall of the second lead screw 322.

[0048] Reference Figure 6 , Figure 7Both ends of the linkage sleeve 323 are coaxially provided with stop grooves 324. The first lead screw 321 and the second lead screw 322 are both provided with mounting cavities along the axial direction. The first lead screw 321 and the second lead screw 322 are both provided with movable rods 325 that slide along the axial direction and are connected to the mounting cavities. The movable rods 325 and the first lead screw 321 / second lead screw 322 are circumferentially linked. The end of the movable rod 325 is fixedly connected with a stop block 326 inserted into the stop groove 324. The cross-section of the stop block 326 and the stop groove 324 is polygonal.

[0049] The first lead screw 321 and the second lead screw 322 are externally located on the side wall of the protective housing 31 and have a clearance groove 327 communicating with the mounting cavity. Both the first lead screw 321 and the second lead screw 322 are provided with a control assembly 5 for driving the movable rod 325 to slide. The control assembly 5 includes a single-grip rod 51 fixedly connected to the outer wall of the first lead screw 321, a control rod 52 disposed on the movable rod 325 and sliding through the clearance groove 327, and an elastic element that forces the control rod 52 to slide towards the protective housing 31 in its normal state. The axial direction of the single-grip rod 51 is parallel to the radial direction of the first lead screw 321 and the second lead screw 322. There are two single-grip rods 51 and they are symmetrically arranged along the axis of the first lead screw 321 and the second lead screw 322. The control rod 52 is located between the single-grip rod 51 and the end face of the protective housing 31. In this embodiment, the control rod 52 is fixedly connected to the movable rod 325 and the control rod 52 is parallel to the single-grip rod 51. The elastic element is a spring 53 built into the mounting cavity. One end of the spring 53 is fixedly connected to the inner wall of the mounting cavity, and the other end of the spring 53 is fixedly connected to the upper end of the movable rod 325. A double-rotor gripping rod 54 is fixedly connected to the outer peripheral wall of the end of the first lead screw 321 / second lead screw 322. There are two double-rotor gripping rods 54, which are symmetrically arranged along the axis of the first lead screw 321 / second lead screw 322. The axis of the double-rotor gripping rod 54 is perpendicular to the axis of the single-rotor gripping rod 51.

[0050] Under normal conditions, spring 53 forces movable rod 325 to slide closer to linkage sleeve 323, causing stop block 326 at the end of movable rod 325 to insert into stop groove 324, achieving circumferential linkage between first lead screw 321 and second lead screw 322. When synchronous rotation of first lead screw 321 and second lead screw 322 is required, the operator can rotate first lead screw 321 or second lead screw 322 by holding double-rotor lever 54. When individual rotation of first lead screw 321 or second lead screw 322 is required, the operator can rotate by holding single-rotor lever 51 and using their fingers to... The control lever 52 applies force, causing it to slide closer to the single-rotor lever 51, thereby driving the movable lever 325 to slide away from the linkage sleeve 323. This causes the stop block 326 at the end of the movable lever 325 to slide out of the stop groove 324, releasing the circumferential linkage restriction between the first lead screw 321 and the second lead screw 322. At this time, the spring 53 undergoes elastic deformation and has elastic potential energy. Then, the single-rotor lever 51 applies torque to the first lead screw 321 / second lead screw 322 to rotate independently. After releasing the single-rotor lever 51, the spring 53 forces the movable lever 325 to slide back to its original position, causing the stop block 326 to be reinserted into the stop groove 324.

[0051] Example 4: The difference from Example 3 is that, referring to Figure 8 The outer peripheral wall of the single-rotor grip 51 is provided with anti-slip grooves. Multiple anti-slip grooves are provided and distributed along the axial direction of the single-rotor grip 51. The single-rotor grip 51 is provided with an anti-slip airbag ring 511 that is embedded in the protective groove. The single-rotor grip 51 has an air passage 512 that communicates with the inner cavity of the anti-slip airbag ring 511. The peripheral wall of the single-rotor grip 51 near the control rod 52 is fixedly connected to the mounting cylinder 513. The mounting cylinder 513 contains an airbag body 514. The inner cavity of the airbag body 514 communicates with the air passage 512. The outer wall of the control rod 52 protrudes and is fixedly fitted with a pressure block 521 that slides and is inserted into the mounting cylinder 513. The pressure block 521 is fixedly connected to the airbag body 514.

[0052] Under normal conditions, spring 53 forces control lever 52 to slide closer to protective housing 31, thereby driving movable lever 325 to slide closer to linkage sleeve 323. This causes stop block 326 on the end of movable lever 325 to insert into stop groove 324, airbag body 514 is inflated, and anti-slip airbag ring 511 is deflated. When an operator grips single-rotation lever 51 and applies force to control lever 52 with their fingers, control lever 52 slides closer to single-rotation lever 51, thereby driving movable lever 325 to slide away from linkage sleeve 323, thus enabling movable lever 52 to slide closer to linkage sleeve 323. The stop block 326 on the end of the moving rod 325 slides out of the stop groove 324, releasing the circumferential linkage restriction between the first lead screw 321 and the second lead screw 322. During this process, the pressure block 521 squeezes the airbag body 514, causing the volume of the inner cavity of the airbag body 514 to decrease. The gas in the airbag body 514 flows into the anti-slip airbag ring 511 through the air passage 512, thereby causing the anti-slip airbag ring 511 to expand and abut against the worker's hand, increasing the friction between the worker's hand and the single-rotation grip rod 51, effectively reducing the possibility of the worker slipping during the rotation of the single-rotation grip rod 51.

[0053] Example 5: The difference from Example 3 is that, referring to Figure 9 The lower surfaces of both ends of the protective housing 31 are hinged with connecting screws 37 via hinge shafts 371. The axis of the hinge shafts 371 is parallel to the width direction of the protective housing 31, allowing the free end of the connecting screw 37 to rotate and fold towards the center of the protective housing 31 to a horizontal state. The upper end face of the column hoop 2 has a through-hole for the connecting screw 37 to pass through. The through-hole is a strip-shaped hole, and the connecting screw 37 is threadedly connected to a limiting nut 38 that abuts against the upper end face of the column hoop 2.

[0054] The protective box 31 and the column hoop 2 are connected by connecting screw 37 and limiting nut 38. On the one hand, this eliminates the need for workers to continuously support the protective frame during the erection of the support device 3, improving the ease of erection of the support device 3 and reducing the labor intensity of workers. On the other hand, by rotating the limiting nut 38, the limiting nut 38 can slide and adjust along the axial direction of the connecting screw 37, thereby adjusting the insertion depth of the connecting screw 37 into the mounting hole, thus adjusting the height position of the protective box 31, and further adjusting the height position of the support component 34, which can meet the needs of different construction conditions.

[0055] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A support structure for expansion joint templates, characterized in that: The system includes several column templates (1) that enclose and form two pouring cavities, column hoops (2) that are fixed to the column templates (1) around the two pouring cavities, and a support device (3) set between the two inner column templates (1). There is a deformation joint between the two inner column templates (1), and the support device (3) is built into the deformation joint. Multiple column hoops (2) are provided and distributed at intervals along the height direction of the column templates (1). The support device (3) includes a protective box (31), tie rods (32), tie sleeves (33), support members (34), and force transmission rods (35). The protective box (31) has a protective cavity (311), and the two opposite side walls of the protective box (31) each have a through groove (3) that communicates with the protective cavity (311). 12) The axial direction of the pull screw (32) is parallel to the length direction of the protective box (31). The pull screw (32) is rotatably connected to the inner wall of the protective cavity (311). The pull screw (32) has a first threaded section and a second threaded section. The thread directions of the first threaded section and the second threaded section are opposite. Two pull sleeves (33) are provided and are respectively threaded onto the first threaded section and the second threaded section. The pull sleeves (33) are built into the protective cavity (311). Two support members (34) are provided and respectively abut against the outer wall of the two inner column templates (1). One end of the force transmission rod (35) is hinged to the pull sleeve (33), and the other end of the force transmission rod (35) passes through the through groove (312) and is hinged to the support member (34). The pull screw (32) contains The device includes a first lead screw (321), a second lead screw (322), and a linkage sleeve (323) rotatably connected to the inner wall of the protective cavity (311). The linkage sleeve (323) is located between the first lead screw (321) and the second lead screw (322). The first lead screw (321), the second lead screw (322), and the linkage sleeve (323) are coaxially arranged. The first threaded section is provided on the outer peripheral wall of the first lead screw (321), and the second threaded section is provided on the outer peripheral wall of the second lead screw (322). Both ends of the linkage sleeve (323) are coaxially provided with stop grooves (324). The first lead screw (321) and the second lead screw (322) are both provided with mounting cavities along the axial direction. The first lead screw (321) and the second lead screw (322) are both provided with a movable joint that slides along the axial direction and is connected to the mounting cavity. The movable rod (325), the movable rod (325), the first lead screw (321), and the second lead screw (322) are circumferentially linked. The end of the movable rod (325) is fixedly connected to a stop block (326) inserted into the stop groove (324). The cross-section of the stop block (326) and the stop groove (324) are both polygonal. The first lead screw (321) and the second lead screw (322) are both provided with a control component (5) to drive the movable rod (325) to slide. The control component (5) can drive the movable rod (325) to slide away from the linkage sleeve (323), so that the stop block (326) on the movable rod (325) and the stop groove (324) are disengaged, thereby releasing the circumferential linkage restriction of the first lead screw (321) and the second lead screw (322).

2. The expansion joint template support structure according to claim 1, characterized in that: The support member (34) has a sliding cavity on the side near the protective box (31). The sliding cavity extends along the length of the support member (34). The support member (34) is provided with a hinge block (341) that slides in the sliding cavity. The force transmission rod (35) is hinged to the hinge block (341). The support member (34) is provided with an adjustment component (4) for adjusting the sliding position of the hinge block (341).

3. The expansion joint template support structure according to claim 2, characterized in that: The upper end face of the support member (34) is provided with a limiting hole (342) that communicates with the sliding cavity. Multiple limiting holes (342) are provided and are spaced apart along the length direction of the support member (34). The upper end face of the hinge block (341) is provided with an insertion hole (343). The adjustment component (4) includes an adjustment pin inserted into the limiting hole (342) and the insertion hole (343).

4. The expansion joint template support structure according to claim 2, characterized in that: The adjustment assembly (4) includes an adjustment screw (41) rotatably connected to the end face of the support member (34). The axial direction of the adjustment screw (41) is parallel to the sliding direction of the hinge block (341), and the adjustment screw (41) is threaded through the hinge block (341).

5. The expansion joint template support structure according to claim 1, characterized in that: The ends of the first lead screw (321) and the second lead screw (322) are both exposed outside the protective housing (31). The first lead screw (321) and the second lead screw (322) are provided with a clearance groove (327) communicating with the mounting cavity on the side wall of the protective housing (31). The control component (5) includes a single-rotor grip rod (51) fixedly connected to the outer wall of the first lead screw (321), a control rod (52) disposed on the movable rod (325) and slidably passing through the clearance groove (327), and an elastic element that forces the control rod (52) to slide towards the protective housing (31) in the normal state. The axial direction of the single-rotor grip rod (51) is parallel to the first lead screw (321). 1) In the radial direction of the second lead screw (322), there are two single-rotor grips (51) and they are symmetrically arranged along the axis of the first lead screw (321) and the second lead screw (322). The control rod (52) is located between the end face of the single-rotor grip (51) and the protective box (31). The control rod (52) is parallel to the single-rotor grip (51). The outer peripheral wall of the end of the first lead screw (321) and the second lead screw (322) is fixedly connected to a double-rotor grip (54). There are two double-rotor grips (54) and they are symmetrically arranged along the axis of the first lead screw (321) and the second lead screw (322). The axial direction of the double-rotor grip (54) is perpendicular to the axial direction of the single-rotor grip (51).

6. The expansion joint template support structure according to claim 1, characterized in that: The lower surfaces of both ends of the protective box (31) are provided with connecting screws (37), and the upper surface of the column hoop (2) is provided with a mounting hole for the connecting screws (37) to pass through. The mounting hole is a strip-shaped hole, and the connecting screws (37) are threadedly connected with a limiting nut (38) that abuts against the upper surface of the column hoop (2).

7. The expansion joint template support structure according to claim 6, characterized in that: The upper end of the connecting screw (37) can be folded and connected to the protective box (31). When the connecting screw (37) is folded to a horizontal state, the axial direction of the connecting screw (37) is parallel to the length direction of the protective box (31).

Images