Elevator shaft inner tube formwork structure and construction method thereof

Abstract

The application discloses an elevator shaft inner cylinder template structure and a construction method thereof, which comprises the following steps: a plurality of corner columns are arranged at the corners of the inner contour line of the elevator shaft; the two adjacent sides of the corner column are respectively slidably provided with an edge plate; a linkage structure is arranged in the corner column; a plurality of unit plates are arranged between the adjacent sides of the two adjacent corner columns; the outer edge of the second plate surface of the unit plate extends towards the inner side of the inner contour line to form a connecting flange which is attached to the edge plate; the connecting flange is provided with a second perforation which is aligned with the first perforation of the edge plate; a locking structure is arranged, which comprises a lock box, the lock box is fixedly arranged on the second plate surface, the lock box is provided with a length-adjustable lock rod assembly, the two ends of the lock rod assembly are movably arranged in the second perforation of the connecting flange of the unit plate and the first perforation of the edge plate on the corner column, the end of the lock rod assembly extends to the inside of the corner column and is provided with a variable diameter mechanism which is pressed against the side of the edge plate facing the corner column and has a variable outer diameter. The application solves the problem of high labor cost caused by the assembly of a large number of bolts in the existing elevator shaft template.

Description

Technical Field

[0001] This invention relates to the field of building construction technology, specifically to an elevator shaft inner cylinder formwork structure and its construction method. Background Technology

[0002] An elevator shaft is the shaft through which elevators are installed. The dimensions of the shaft are determined according to the elevator model. Elevator rails and counterweight rails are installed on the shaft walls, and elevator doors are installed in the reserved door openings. The elevator machine room is located at the top of the shaft. Elevator shaft formwork is used during the construction process. Aluminum frame formwork is used to provide auxiliary support for the elevator shaft walls, thereby reserving a passage for the elevator shaft location.

[0003] Existing elevator shaft precision templates (such as the Chinese patent with announcement number CN207405987U) use multiple sets of bolts to connect and assemble right-angle templates, aluminum frame templates, and connecting templates. Because the assembly of elevator shaft templates with a large number of bolts requires a lot of manpower, material resources, and time, the elevator shaft templates are inconvenient to disassemble and assemble, affecting the construction progress. Summary of the Invention

[0004] To overcome the shortcomings of existing technologies, a new elevator shaft inner cylinder formwork structure and its construction method are provided to solve the problem of high labor costs caused by the use of a large number of bolts in the assembly of existing elevator shaft formwork.

[0005] To achieve the above objectives, an elevator shaft inner cylinder formwork structure is provided, comprising:

[0006] Multiple corner posts are respectively set at the corners of the inner contour line of the elevator shaft. Each corner post has two adjacent sides opposite to the adjacent corner posts. Each of the two adjacent sides is slidably provided with a sealing plate. A linkage structure for driving the two sealing plates to move closer or further away from each other along the width direction of the side of the corner post is installed inside the corner post. The sealing plate is provided with a first through hole.

[0007] Multiple unit panels are embedded between the adjacent sides of two adjacent corner posts. Each unit panel has a first panel facing away from the inner side of the inner contour line and a second panel facing the inner side of the inner contour line. The outer edge of the second panel extends toward the inner side of the inner contour line to form a connecting flange that fits into the edge sealing plate. The connecting flange has a second through hole aligned with the first through hole.

[0008] The interlocking structure includes a lock box fixed to the second plate surface. The lock box is equipped with an adjustable length lock rod assembly. The two ends of the lock rod assembly are respectively movably inserted into the second through hole of the connecting flange of the unit plate and the first through hole of the edge sealing plate on the corner post. The end of the lock rod assembly extends into the interior of the corner post and is equipped with a variable diameter mechanism that presses against the side of the edge sealing plate facing the corner post and has a variable outer diameter. When the elevator shaft inner cylinder template structure is disassembled, the outer diameter of the variable diameter mechanism decreases, and after the lock rod assembly is shortened, the variable diameter mechanism retracts to the second plate surface through the first through hole and the second through hole.

[0009] Furthermore, the corner post includes:

[0010] Two column plates are set at a preset angle, the column plates are set vertically, and the opposite sides of the two column plates are connected together. The preset angle is adapted to the angle of the corner of the elevator shaft.

[0011] The reaction plates are respectively connected to the opposite sides of the two column plates, and the sealing plates are slidably mounted on the two reaction plates. The linkage structure is installed on the column plates.

[0012] Furthermore, the linkage structure includes:

[0013] A support rod is rotatably connected to the junction of the two column plates and is set along the angle bisector of the inside corner of the two column plates;

[0014] The linkage assembly has a sliding hole in the reaction plate, the sliding hole is arranged along the thickness direction of the column plate, the middle part of the linkage assembly is movably disposed in the sliding hole, and one end of the linkage assembly is hinged to the side of the sealing plate away from the connecting flange.

[0015] A drive seat is adjustablely mounted on the support rod, and the opposite ends of the drive seat are respectively hinged to the other ends of the connecting rod assemblies on the two adjacent sides of the corner post.

[0016] Furthermore, the drive seat has a threaded hole, the support rod has an external thread, and the threaded hole of the drive seat is screwed into the support rod.

[0017] Furthermore, the linkage assembly includes:

[0018] A hinge plate, one side of which is hinged to the side of the edge sealing plate away from the connecting flange;

[0019] A shaft is disposed opposite to the other side of the hinge plate. The two ends of the drive seat are respectively formed with shaft holes. The shaft holes are disposed along the axial direction of the corner column. The shaft is rotatably inserted into the shaft holes.

[0020] A tie rod is provided, with each end of the shaft connected to the other side of the hinge plate.

[0021] Furthermore, the locking lever assembly includes:

[0022] Two movable sleeves are provided. Limited rotation holes are opened on the side walls on opposite sides of the lock box. The movable sleeves are slidably disposed in the limited rotation holes. Internal threads are formed inside the movable sleeves.

[0023] A screw rod, the two ends of which are respectively screwed into the two movable sleeves, and a receiving through hole is provided on the top side wall of the lock box;

[0024] A drive gear is slidably disposed in the accommodating through hole. The upper part of the accommodating through hole has toothed patterns. The drive gear meshes with the toothed patterns. The drive gear is connected to a transmission shaft. A driven shaft is rotatably mounted in the lock box. The driven shaft is drivenly connected to the screw. The driven shaft and the transmission shaft are coaxially arranged. A guide hole is opened at the upper end of the driven shaft. The guide hole is coaxially arranged with the driven shaft. The lower end of the transmission shaft is slidably disposed in the guide hole. An elastic element is movably disposed between the driven shaft and the drive gear.

[0025] Furthermore, the variable diameter mechanism includes:

[0026] An adapter plate is connected to the end of the movable sleeve furthest from the screw.

[0027] A sealing plate is embedded in the first through hole. The sealing plate is connected to the adapter plate by a support rod. The sealing plate has a first through hole, which is arranged in the same direction as the movable sleeve.

[0028] A movable end plate is coaxially arranged with the sealing plate, and the movable end plate is located on the side of the sealing plate away from the adapter plate;

[0029] Multiple folding arm assemblies, each folding arm assembly including two hinged arms arranged at an angle, one end of the two hinged arms being hinged together, the other ends of the two connecting plates being respectively hinged to the outer edge of the movable end plate and the outer edge of the sealing plate, and one end of the hinged arm pressing against the side of the sealing plate away from the connecting flange;

[0030] A push rod is slidably disposed in the first through hole. One end of the push rod is connected to the movable end plate. A drive component for driving the push rod is installed between the push rod and the adapter plate. When disassembling the inner cylinder template structure of the elevator shaft, the push rod pushes the movable end plate away from the sealing plate to straighten the two hinged arms. The locking rod assembly shortens to allow the movable end plate to retract into the second through hole, thereby releasing the locking of the sealing plate.

[0031] Furthermore, the adapter plate has a second through hole, which is coaxially arranged with the first through hole, and the push rod is slidably disposed in the second through hole.

[0032] Furthermore, the driving component is an electro-hydraulic push rod.

[0033] This invention provides a construction method for an elevator shaft inner cylinder formwork structure, comprising the following steps:

[0034] Multiple corner posts are placed at the corners of the inner contour line of the elevator shaft;

[0035] Multiple unit panels are respectively placed between the adjacent sides of two adjacent corner columns;

[0036] The locking rod assembly of the elongated interlocking structure allows the diameter-changing mechanism of the interlocking structure to extend through the second through hole in the connecting flange of the unit plate and the first through hole in the edge sealing plate to the side of the edge sealing plate away from the connecting flange.

[0037] The outer diameter of the variable diameter mechanism is increased, and the variable diameter mechanism presses against the side of the edge sealing plate facing the corner post to lock the corner post;

[0038] Concrete is poured on the outside of the inner cylinder formwork structure of the elevator shaft to solidify and form the elevator shaft.

[0039] When disassembling the inner cylinder template structure of the elevator shaft, the linkage mechanism drives the two sealing plates to move closer to each other along the width direction of the side of the corner column so that the unit plate separates from the inner wall of the elevator shaft, thereby achieving rapid demolding.

[0040] The beneficial effect of this invention is that, during the installation and disassembly of the elevator shaft inner cylinder template structure, when connecting and locking the corner column to the unit plate, the length of the locking rod assembly is adjusted so that the diameter-changing mechanisms at both ends of the locking rod assembly extend to the side of the edge sealing plate away from the unit plate through the second and first through holes, respectively. Then, the size of the diameter-changing mechanism is adjusted so that its outer diameter is larger than the first and second through holes. Finally, the locking rod assembly is shortened so that the diameter-changing mechanism presses against the side of the edge sealing plate away from the unit plate, thereby locking the corner column and the unit plate together. When the elevator shaft concrete is poured and solidified, and the elevator shaft inner cylinder template structure is disassembled, the outer diameter of the diameter-changing mechanism is adjusted so that its outer diameter decreases, and after the locking rod assembly is shortened, the diameter-changing mechanism retracts to the second plate surface through the first and second through holes. Furthermore, during demolding and before releasing the locking of the unit panels, the sealing plates on the two adjacent sides of the corner column are driven by a linkage structure, causing the two sealing plates to move closer to each other along the column surface direction of the adjacent sides of the corner column. This allows the unit template to detach from the inner wall of the elevator shaft, achieving rapid demolding. The installation and disassembly of the elevator shaft inner cylinder template structure of this invention eliminates the need for a large number of bolts in assembling the elevator shaft inner cylinder template structure. Through the linkage and interlocking structures, rapid installation and disassembly of the elevator shaft inner cylinder template are achieved, improving the construction efficiency of the elevator shaft. Attached Figure Description

[0041] Other features, objects, and advantages of this application will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0042] Figure 1 This is a schematic diagram of the elevator shaft inner cylinder template structure according to an embodiment of the present invention.

[0043] Figure 2 This is a schematic diagram of the corner column structure according to an embodiment of the present invention.

[0044] Figure 3 This is a cross-sectional view of the corner pillar according to an embodiment of the present invention.

[0045] Figure 4 This is a schematic diagram of the linkage structure according to an embodiment of the present invention.

[0046] Figure 5 This is a schematic diagram of the upper end of the unit board in an embodiment of the present invention.

[0047] Figure 6 This is a schematic diagram of the interlocking structure according to an embodiment of the present invention.

[0048] Figure 7 This is a schematic diagram of the variable diameter structure according to an embodiment of the present invention.

[0049] Figure 8 This is a schematic diagram of the top structure of the lock box according to an embodiment of the present invention. Detailed Implementation

[0050] The present application will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, only the parts relevant to the invention are shown in the accompanying drawings.

[0051] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0052] Reference Figures 1 to 8 As shown, the present invention provides an elevator shaft inner cylinder template structure, including: corner column 1, unit plate 2, and interlocking structure 3.

[0053] In this embodiment, the cross-section of the elevator shaft is rectangular. Correspondingly, the inner contour line of the elevator shaft is rectangular.

[0054] There are multiple corner posts 1. These corner posts 1 are respectively located at the corners of the inner contour line of the elevator shaft. In this embodiment, there are four corner posts. Each corner post 1 has two adjacent sides opposite to the adjacent corner post 1. Each of the two adjacent sides is slidably fitted with an edge sealing plate 12. A linkage structure 13 is installed inside each corner post 1. The linkage structure 13 is used to drive the two edge sealing plates 12 to move closer or further apart along the width direction of the side surface of the corner post 1.

[0055] The edge banding 12 has a first perforation. There are multiple first perforations. The multiple first perforations are evenly spaced along the length of the edge banding.

[0056] There are multiple unit panels 2. The number of unit panels is adapted to the number of corner posts. Unit panels 2 are embedded between the adjacent sides of two adjacent corner posts 1.

[0057] Unit panel 2 has a first panel surface facing away from the inner contour line and a second panel surface facing the inner contour line. The outer edge of the second panel surface of unit panel 2 extends towards the inner contour line to form a connecting flange 21 that fits against the edge banding plate 12. The connecting flange 21 has second through holes aligned with the first through hole. There are multiple second through holes. The multiple second through holes are evenly spaced along the length direction of the connecting flange.

[0058] In this embodiment, the connecting flange is arranged in a circle along the circumferential direction of the unit plate.

[0059] The interlocking structure 3 includes a lock box 31, a lock rod assembly 32, and a diameter changing mechanism 33.

[0060] The lock box 31 is fixed to the second surface of the unit plate 2. The lock box 31 is equipped with a locking rod assembly 32. The length of the locking rod assembly 32 is adjustable. Both ends of the locking rod assembly 32 are movably inserted into the second through hole of the connecting flange 21 of the unit plate 2 and the first through hole of the edge sealing plate 12 on the corner post 1, respectively. The end of the locking rod assembly 32 extends into the interior of the corner post 1. A diameter-changing mechanism 33 is installed at the end of the locking rod assembly 32. The diameter-changing mechanism 33 presses against the side of the edge sealing plate 12 facing the corner post 1. The outer diameter of the diameter-changing mechanism 33 is adjustable.

[0061] Specifically, when connecting and locking the corner post to the unit panel, the length of the locking rod assembly is adjusted so that the diameter-changing mechanisms at both ends of the locking rod assembly extend to the side of the edge banding away from the unit panel through the second and first through holes, respectively. Then, the size of the diameter-changing mechanism is adjusted so that its outer diameter is larger than the first and second through holes. Finally, the locking rod assembly is shortened so that the diameter-changing mechanism presses against the side of the edge banding away from the unit panel, thereby locking the corner post to the unit panel together.

[0062] After the concrete in the elevator shaft is poured and solidified, the inner cylinder formwork structure of the elevator shaft needs to be dismantled. When dismantling the inner cylinder formwork structure of the elevator shaft, the outer diameter of the diameter-changing mechanism is adjusted so that the outer diameter of the diameter-changing mechanism 33 becomes smaller. After the locking rod assembly 32 is shortened, the diameter-changing mechanism 33 retracts to the second plate surface through the first through hole and the second through hole.

[0063] In addition, during demolding and before the unit plate is unlocked, the sealing plates on the two adjacent sides of the corner column are driven by the linkage structure, so that the two sealing plates move closer to each other along the column surface direction of the adjacent sides of the corner column, thereby causing the unit template to detach from the inner wall of the elevator shaft and achieve rapid demolding.

[0064] The installation and disassembly of the elevator shaft inner cylinder template structure of the present invention does not require the use of a large number of bolts to assemble the elevator shaft inner cylinder template structure. Through the linkage and interlocking structure, the rapid installation and disassembly of the elevator shaft inner cylinder template is realized, thereby improving the construction efficiency of the elevator shaft.

[0065] Combination Figures 1 to 3 As shown, in this embodiment, the corner column is a hollow column. Specifically, the corner column is L-shaped. The corner column 1 includes two column plates 11. The two column plates 11 are set at a preset angle. The column plates 11 are vertically arranged. The opposite sides of the two column plates 11 are connected together. The preset angle between the two column plates 11 is adapted to the angle of the corner of the elevator shaft.

[0066] In this embodiment, the two column plates are arranged vertically. The linkage structure is located between the opposite sides of the two column plates.

[0067] Reaction plates 14 are connected to the opposite sides of the two column plates 11. Each column plate has multiple reaction plates on its opposite side. These reaction plates are spaced apart along the length of the column plate. Edge sealing plates 12 are slidably mounted on the reaction plates 14 on the opposite sides of the two column plates. A linkage structure 13 is installed on the column plate 11.

[0068] As a preferred embodiment, the linkage structure 13 includes: a support rod 131, a connecting rod assembly 132, and a drive seat 133.

[0069] The support rod 131 is rotatably connected to the junction of the two column plates 11. The support rod 131 is set along the angle bisector of the inside corner of the two column plates 11.

[0070] In this embodiment, one end of the support rod is rotatably mounted at the junction of the two column plates via a bearing.

[0071] The reaction plate 14 has multiple sliding holes. These holes are spaced apart along the length of the reaction plate. Each sliding hole is positioned along the thickness of the column plate 11. The middle portion of the connecting rod assembly 132 is movably disposed within one of the sliding holes. The outer diameter of the connecting rod assembly is much smaller than the length of the sliding hole, allowing the connecting rod assembly to both slide and swing within the hole. One end of the connecting rod assembly 132 is hinged to the side of the sealing plate 12 furthest from the connecting flange.

[0072] The drive seat 133 is adjustablely mounted on the support rod 131. The drive seat can be adjusted in position along the axial direction of the support rod. The opposite ends of the drive seat 133 are respectively hinged to the other ends of the connecting rod assemblies 132 on the two adjacent sides of the corner post 1.

[0073] When the drive seat approaches the junction of the two column plates, it causes the edge sealing plates on the two adjacent sides of the corner column to move away from each other along the surface of the reaction plate; conversely, when the drive seat moves away from the junction of the two column plates, it causes the edge sealing plates on the two adjacent sides of the corner column to move closer to each other along the surface of the reaction plate. After the edge sealing plates are locked onto the connecting flange of the unit plate by the diameter-changing mechanism, the first plate surface of the unit plate is flush with the opposite side of the column plate. By adjusting the position of the drive seat, the first plate surface of the unit plate is misaligned with the opposite side of the column plate, thereby achieving the demolding action.

[0074] In a preferred embodiment, the drive seat 133 has a threaded hole. The support rod 131 has an external thread. The threaded hole of the drive seat 133 is screwed into the support rod 131.

[0075] In this embodiment, the linkage assembly 132 includes: a hinge plate a, a shaft b, and a pull rod c.

[0076] One side of the hinge plate a is hinged to the side of the sealing plate 12 away from the connecting flange. The shaft b is disposed opposite to the other side of the hinge plate a. Shaft holes are formed at opposite ends of the drive seat 133. The shaft holes are disposed along the axial direction of the corner post 1. The shaft b is rotatably inserted into the shaft hole. Tie rods c are connected between the two ends of the shaft b and the other side of the hinge plate a.

[0077] See Figure 4 As shown, a linkage assembly is mounted on each of the opposite sides of each drive unit. Specifically, ear plates are formed on the opposite sides of the drive unit. The ear plates have shaft holes. A central rod is connected to the other side of the hinge plate. The two ends of the central rod are connected to the two ends of the shaft via tie rods.

[0078] The locking rod assembly 32 includes: a movable sleeve 321, a screw 322, and a drive gear 323.

[0079] Specifically, there are multiple movable sleeves 321. Each movable sleeve is square. A circular inner hole is formed inside the movable sleeve. Limited rotation holes are formed on the opposite side walls of the locking box 31. The movable sleeve 321 slides within these limited rotation holes. The shape and size of the limited rotation holes are adapted to the shape and size of the movable sleeve, and the limited rotation holes are used to restrict the rotation of the movable sleeve. Internal threads are formed inside the movable sleeve 321.

[0080] The two ends of the screw 322 are respectively screwed into the two movable sleeves 321. (See reference...) Figure 6 and Figure 8 The top side wall of the lock box 31 has a receiving through hole. The receiving through hole is vertically arranged.

[0081] The drive gear 323 is slidably disposed within the accommodating through hole. The drive gear can move vertically within the accommodating through hole. The upper part of the wall of the accommodating through hole has teeth. The drive gear 323 engages with the teeth to prevent rotation. The drive gear 323 is connected to a drive shaft 324. The drive shaft is coaxially connected to the drive gear. A hexagonal countersunk hole is formed on the upper part of the drive gear. During construction, a hexagonal wrench is inserted into the hexagonal countersunk hole and pressed down on the drive gear, causing it to move downwards to the lower part of the accommodating through hole, thereby allowing the drive gear to rotate.

[0082] A driven shaft 325 is rotatably mounted inside the lock box 31. The driven shaft 325 is drively connected to the screw 322. The driven shaft 325 and the drive shaft 324 are coaxially arranged. A guide hole is provided at the upper end of the driven shaft 325, and the guide hole is coaxial with the driven shaft 325. The lower end of the drive shaft 324 slides in the guide hole. An elastic element 326 is movably arranged between the driven shaft 325 and the drive gear 323.

[0083] In this embodiment, the elastic element is a helical spring. The helical spring is supported between the drive gear and the driven shaft. When it is not necessary to rotate the drive gear, the hex wrench is pulled out of the hexagonal countersunk hole. Under the pushing action of the elastic element, the drive gear slides into the upper part of the receiving through hole and is locked by the meshing of the teeth to prevent rotation.

[0084] In a preferred embodiment, the diameter-changing mechanism 33 includes: a transition plate 331, a sealing plate 332, a movable end plate 333, a folding arm assembly 334, and a push rod 335.

[0085] See Figures 5 to 7 As shown, the adapter plate 331 is connected to the end of the movable sleeve 321 away from the screw 322. The adapter plate is arranged vertically. The sealing plate 332 is embedded in the first through hole. The sealing plate 332 is connected to the adapter plate 331 by a support rod. The sealing plate 332 has a first through hole. The first through hole is arranged in the same direction as the movable sleeve 321.

[0086] The movable end plate 333 is coaxially arranged with the sealing plate 332. The movable end plate 333 is located on the side of the sealing plate 332 away from the adapter plate 331. In this embodiment, the shape and size of the sealing plate and the movable end plate are adapted to the shape and size of the first through hole and the second through hole.

[0087] There are multiple articulated arm assemblies 334. These multiple articulated arm assemblies are spaced apart along the circumferential direction of the movable end plate.

[0088] For details, please refer to Figure 6 and Figure 7 As shown, the folding arm assembly 334 includes two hinged arms d arranged at an angle. One end of the two hinged arms d is hinged together. Specifically, one end of each hinged arm is hinged to both ends of a connecting plate. The other ends of the two connecting plates are respectively hinged to the outer edge of the movable end plate 333 and the outer edge of the sealing plate 332. One end of the hinged arm d presses against the side of the sealing plate 12 away from the connecting flange 21. When the movable end plate approaches the sealing plate, the folding arm assembly folds and extends to the outside of the space between the movable end plate and the sealing plate; when the movable end plate moves away from the sealing plate, the folding arm assembly is straightened and enters the interior of the space between the movable end plate and the sealing plate, thus allowing it to pass smoothly through the first and second through holes.

[0089] The push rod 335 is slidably disposed in the first through hole. One end of the push rod 335 is connected to the movable end plate 333. A drive component 336 for driving the push rod 335 is installed between the push rod 335 and the adapter plate 331. When disassembling the inner cylinder template structure of the elevator shaft, the push rod 335 pushes the movable end plate 333 away from the sealing plate 332 to straighten the two hinge arms d, and the locking rod assembly 32 shortens to allow the movable end plate 333 to retract into the second through hole, thereby releasing the lock on the sealing plate 12.

[0090] In this embodiment, the adapter plate 331 has a second through hole. The second through hole is coaxially arranged with the first through hole. The push rod 335 is slidably disposed in the second through hole.

[0091] As a preferred embodiment, the drive component 336 is an electro-hydraulic push rod.

[0092] This invention provides a construction method for an elevator shaft inner cylinder formwork structure, comprising the following steps:

[0093] S1. Place multiple corner posts 1 at the corners of the inner contour line of the elevator shaft.

[0094] S2. Place multiple unit boards 2 between the adjacent sides of two corner posts 1.

[0095] S3, the locking rod assembly 32 of the extension interlocking structure 3 is extended such that the diameter-changing mechanism 33 of the interlocking structure 3 extends to the side of the sealing plate 12 away from the connecting flange 21 via the second through hole of the connecting flange 21 of the unit plate 2 and the first through hole of the sealing plate 12.

[0096] S4. Expand the outer diameter of the diameter changing mechanism 33, and press the diameter changing mechanism 33 against the side of the sealing plate 12 facing the corner post 1 to lock the corner post 1.

[0097] S5. Concrete is poured on the outside of the inner cylinder formwork structure of the elevator shaft to solidify and form the elevator shaft.

[0098] S6. When disassembling the inner cylinder template structure of the elevator shaft, the linkage mechanism drives the two sealing plates 12 to move closer to each other along the width direction of the side of the corner column 1 so that the unit plate 2 is separated from the inner wall of the elevator shaft, thereby achieving rapid demolding.

[0099] The above description is merely a preferred embodiment of this application and an explanation of the technical principles employed. Those skilled in the art should understand that the scope of the invention involved in this application is not limited to technical solutions formed by specific combinations of the above-described technical features, but should also cover other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalents without departing from the inventive concept. For example, technical solutions formed by substituting the above features with (but not limited to) technical features with similar functions disclosed in this application.

Claims

1. An elevator shaft inner tube formwork structure, characterized by, include: Multiple corner posts are respectively set at the corners of the inner contour line of the elevator shaft. Each corner post has two adjacent sides opposite to the adjacent corner posts. Each of the two adjacent sides is slidably provided with a sealing plate. A linkage structure for driving the two sealing plates to move closer or further away from each other along the width direction of the side of the corner post is installed inside the corner post. The sealing plate is provided with a first through hole. Multiple unit panels are embedded between the adjacent sides of two adjacent corner posts. Each unit panel has a first panel facing away from the inner side of the inner contour line and a second panel facing the inner side of the inner contour line. The outer edge of the second panel extends toward the inner side of the inner contour line to form a connecting flange that fits into the edge sealing plate. The connecting flange has a second through hole aligned with the first through hole. The interlocking structure includes a lock box fixed to the second plate surface. The lock box is equipped with an adjustable length lock rod assembly. The two ends of the lock rod assembly are respectively movably inserted into the second through hole of the connecting flange of the unit plate and the first through hole of the edge sealing plate on the corner post. The end of the lock rod assembly extends into the interior of the corner post and is equipped with a variable diameter mechanism that presses against the side of the edge sealing plate facing the corner post and has a variable outer diameter. When the elevator shaft inner cylinder template structure is disassembled, the outer diameter of the variable diameter mechanism decreases, and after the lock rod assembly is shortened, the variable diameter mechanism retracts to the second plate surface through the first through hole and the second through hole.

2. The elevator shaft inlay formwork structure according to claim 1, characterized in that, The corner pillar includes: Two column plates are set at a preset angle, the column plates are set vertically, and the opposite sides of the two column plates are connected together. The preset angle is adapted to the angle of the corner of the elevator shaft. The reaction plates are respectively connected to the opposite sides of the two column plates, and the sealing plates are slidably mounted on the two reaction plates. The linkage structure is installed on the column plates.

3. The elevator shaft inlay formwork structure according to claim 2, characterized in that, The linkage structure includes: A support rod is rotatably connected to the junction of the two column plates and is set along the angle bisector of the inside corner of the two column plates; The linkage assembly has a sliding hole in the reaction plate, the sliding hole being arranged along the thickness direction of the column plate, the middle part of the linkage assembly being movably disposed in the sliding hole, and one end of the linkage assembly being hinged to the side of the sealing plate away from the connecting flange; A drive seat is adjustablely mounted on the support rod, and the opposite ends of the drive seat are respectively hinged to the other ends of the connecting rod assemblies on the two adjacent sides of the corner post.

4. The elevator shaft inlay formwork structure according to claim 3, characterized in that, The drive seat has a threaded hole, and the support rod has an external thread. The threaded hole of the drive seat is screwed into the support rod.

5. The elevator shaft inlay formwork structure according to claim 4, characterized in that, The linkage assembly includes: A hinge plate, one side of which is hinged to the side of the edge sealing plate away from the connecting flange; A shaft is disposed opposite to the other side of the hinge plate. The two ends of the drive seat are respectively formed with shaft holes. The shaft holes are disposed along the axial direction of the corner column. The shaft is rotatably inserted into the shaft holes. A tie rod is provided, with each end of the shaft connected to the other side of the hinge plate.

6. The elevator shaft inlay formwork structure according to claim 1, characterized in that, The locking lever assembly includes: Two movable sleeves are provided. Limited rotation holes are opened on the side walls on opposite sides of the lock box. The movable sleeves are slidably disposed in the limited rotation holes. Internal threads are formed inside the movable sleeves. A screw rod, the two ends of which are respectively screwed into the two movable sleeves, and a receiving through hole is provided on the top side wall of the lock box; A drive gear is slidably disposed in the accommodating through hole. The upper part of the accommodating through hole has toothed patterns, and the drive gear meshes with the toothed patterns. The drive gear is connected to a transmission shaft. A driven shaft is rotatably mounted inside the lock box. The driven shaft is drivenly connected to the screw. The driven shaft and the transmission shaft are coaxially arranged. A guide hole is opened at the upper end of the driven shaft. The guide hole is coaxially arranged with the driven shaft. The lower end of the transmission shaft is slidably disposed in the guide hole. An elastic element is movably disposed between the driven shaft and the drive gear.

7. The elevator shaft inlay formwork structure according to claim 6, characterized in that The diameter-changing mechanism includes: An adapter plate is connected to the end of the movable sleeve furthest from the screw. A sealing plate is embedded in the first through hole. The sealing plate is connected to the adapter plate by a support rod. The sealing plate has a first through hole, which is arranged in the same direction as the movable sleeve. A movable end plate is coaxially arranged with the sealing plate, and the movable end plate is located on the side of the sealing plate away from the adapter plate; Multiple folding arm assemblies, each folding arm assembly including two hinged arms arranged at an angle, one end of the two hinged arms being hinged together, and the other end of the two hinged arms being respectively hinged to the outer edge of the movable end plate and the outer edge of the sealing plate, and one end of the hinged arm pressing against the side of the sealing plate away from the connecting flange; A push rod is slidably disposed in the first through hole. One end of the push rod is connected to the movable end plate. A drive component for driving the push rod is installed between the push rod and the adapter plate. When disassembling the inner cylinder template structure of the elevator shaft, the push rod pushes the movable end plate away from the sealing plate to straighten the two hinged arms. The locking rod assembly shortens to allow the movable end plate to retract into the second through hole, thereby releasing the locking of the sealing plate.

8. The elevator shaft inlay formwork structure according to claim 7, characterized in that The adapter plate has a second through hole, which is coaxial with the first through hole, and the push rod is slidably disposed in the second through hole.

9. The elevator shaft iner tube formwork structure according to claim 8, characterized by, The driving component is an electro-hydraulic push rod.

10. A construction method of an elevator shaft inner tube formwork structure according to any one of claims 1 to 9, characterized in that, Includes the following steps: Multiple corner posts are placed at the corners of the inner contour line of the elevator shaft; Multiple unit panels are respectively placed between the adjacent sides of two adjacent corner columns; The locking rod assembly of the elongated interlocking structure allows the diameter-changing mechanism of the interlocking structure to extend through the second through hole in the connecting flange of the unit plate and the first through hole in the edge sealing plate to the side of the edge sealing plate away from the connecting flange. The outer diameter of the variable diameter mechanism is increased, and the variable diameter mechanism presses against the side of the edge sealing plate facing the corner post to lock the corner post; Concrete is poured on the outside of the inner cylinder formwork structure of the elevator shaft to solidify and form the elevator shaft. When disassembling the inner cylinder template structure of the elevator shaft, the linkage mechanism drives the two sealing plates to move closer to each other along the width direction of the side of the corner column so that the unit plate separates from the inner wall of the elevator shaft, thereby achieving rapid demolding.

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