Elevator shaft construction device and construction method

Abstract

The application provides an elevator shaft construction device and a construction method, and belongs to the field of elevator shaft construction. The device comprises a climbing assembly which moves along the vertical direction of the ground between the upper and lower floors of the elevator shaft and can be fixed on one of the floors; a support frame which is erected on the climbing assembly and moves synchronously with the climbing assembly; an outer formwork which is arranged between the upper and lower floors and surrounds the support frame; an inner formwork which is arranged on the support frame, is arranged at intervals around the inner contour of the outer formwork and forms a pouring space with the outer formwork; a suspension mechanism which is fixedly arranged on the top of the support frame and lifts the inner formwork so that the inner formwork is located above the climbing assembly; and wall forms which are composed of a plurality of formwork strips and are hingedly connected, so that the inner formwork is divided into a plurality of parts and is sequentially demoulded, instead of the whole inner formwork being demoulded, thereby reducing the demoulding difficulty of the inner formwork. The stretching and contracting mechanism and the connecting seat are used to enable the wall forms and the corner forms to surround the inner formwork, and the climbing assembly is used to enable the construction system to drive the inner formwork to move upwards step by step from the bottom.

Description

Technical Field

[0001] This invention relates to the field of elevator shaft construction technology, and in particular to elevator shaft construction equipment and construction methods. Background Technology

[0002] In modern high-rise buildings, elevators are an indispensable means of transportation. The traditional construction method for high-rise elevator shafts typically involves erecting steel pipe scaffolding from bottom to top, and then installing platforms layer by layer from bottom to top as concrete is poured. For each platform, the inner formwork must first be installed, followed by the outer formwork, and finally the top formwork is fixed. Cement is then poured into the assembled formwork system to form one level of the elevator shaft.

[0003] Chinese patent CN 206091283U discloses a hydraulic self-climbing elevator shaft standardized operating platform. The operating platform mainly consists of an operating platform, climbing guide rails, hanging shoes, embedded parts, hydraulic jacks, connecting parts, demolding mechanism, demolding jacks, demolding rails, platform plates, and templates. The operating platform has a double-layer truss structure with symmetrically welded connecting parts on both sides. Climbing guide rails are set on the shear walls on both sides of the elevator shaft door opening, and the operating platform can gradually climb along the climbing guide rails. Demolding rails and templates are set on the operating platform, and the segmented templates are removed sequentially by controlling the demolding jacks. Although jacks are used for demolding, the demolding mechanism of the jacks must first apply a sufficiently inclined pulling force to the main back brace, and then use a sufficiently horizontal force derived from this inclined pulling force to fully pull the vertical main back brace to complete the complete demolding of the formwork. It can be seen that the demolding process of the above demolding mechanism is very easy to cause the formwork to deform when using jacks to pull the formwork in the formwork of the enclosed elevator shaft with a large vertical drop. Once the formwork is deformed, it will directly affect the construction of the next floor elevator shaft. The risk of formwork deformation is high and directly affects the continuous and efficient construction. Replacing the deformed formwork will increase the construction difficulty and prolong the construction period. Summary of the Invention

[0004] In view of this, the present invention proposes an elevator shaft construction device and construction method to solve the problem that although the current construction method utilizes jacks for demolding, the demolding mechanism of the jacks must first apply a sufficiently inclined pulling force with a sufficient inclined component to the main back rib diagonal brace, and then use a sufficient horizontal component derived from this inclined pulling force to fully pull the vertical main back rib to complete the complete demolding of the formwork. For the demolding of formwork in enclosed elevator shafts with large vertical drop, using jacks to pull can easily lead to the deformation of the formwork.

[0005] The technical solution of the present invention is implemented as follows: The present invention provides an elevator shaft construction device, including a climbing component that moves vertically along the ground between the upper and lower floor slabs of the elevator shaft and can be fixed on one of the floor slabs; a support frame that is erected on the climbing component and moves synchronously with the climbing component; an outer formwork that is set between the upper and lower floor slabs and surrounds the support frame; an inner formwork that is set on the support frame and spaced around the inner contour of the outer formwork, forming a pouring space between the inner and outer formwork; and a suspension mechanism that is fixedly set on the top of the support frame and lifts the inner formwork so that the inner formwork is located above the climbing component.

[0006] Based on the above technical solutions, preferably, the inner template includes corner molds, a first wall mold, and a second wall mold; the radial cross-section of the elevator shaft is rectangular, and one side of the elevator shaft is the door side; the four corner molds are symmetrically arranged in pairs around the support frame and are respectively aligned with the four corners of the rectangular cross-section of the elevator shaft. The corner molds move relative to the support frame along the diagonal direction of the rectangular cross-section of the elevator shaft and approach or move away from the outer template; the first wall mold is set on the side of the support frame away from the door side, and the first wall mold moves relative to the support frame in the horizontal direction toward or away from the door side; the two second wall molds are symmetrically arranged on both sides of the door side, and the first wall mold moves horizontally relative to the support frame in the direction perpendicular to the direction of movement of the first wall mold and approaches or moves away from the outer template; the four corner molds, the first wall mold, and the two second wall molds move toward the outer template simultaneously and form the inner template.

[0007] More preferably, both the first wall formwork and the second wall formwork include several template strips; the template strips are connected end to end along the vertical direction of the ground, the edges of adjacent template strips are hinged, and each template strip rotates relative to the adjacent template strip around the hinged connection and separates from the concrete well wall formed in the pouring space.

[0008] More preferably, the inner template also includes a connecting seat and a first telescopic mechanism; a plurality of connecting seats are respectively disposed on the end face of each template strip away from the outer template; a plurality of first telescopic mechanisms are respectively disposed between each connecting seat and the support frame, one end of each first telescopic mechanism is fixed on the support frame and the other end is detachably connected to each connecting seat.

[0009] In a further preferred embodiment, each template strip has a step and a flange at both ends of its end face facing the outer template in the vertical direction along the ground, with the flange located above the step; the end faces of each template strip facing the outer template are flush and connected, and the flanges of adjacent template strips cooperate with the steps.

[0010] Based on the above technical solutions, preferably, the climbing component includes a first platform, a second platform, a support part, and a second telescopic mechanism; each floor slab of the elevator shaft has an opening; the first platform and the second platform are respectively set in the upper and lower openings, with the first platform located directly above the second platform, and a support frame is set on the first platform; at least two support parts are arranged around the extension direction of the elevator shaft on the outer peripheral wall of the first platform or the second platform facing the outer template, and the support parts move horizontally towards the outer template and overlap the edge of the opening or move horizontally away from the outer template and detach from the edge of the opening; the second telescopic mechanism is set between the first platform and the second platform, with both ends of the second telescopic mechanism extending vertically along the ground and respectively fixed to the first platform and the second platform, and the second telescopic mechanism can change the distance between the first platform and the second platform so that the first platform and the second platform are close to each other or far apart.

[0011] A further preferred embodiment includes an anti-collision mechanism, which is disposed between the first platform and the second platform; wherein, the outer peripheral wall of the anti-collision mechanism is provided with at least two rollers extending around the elevator shaft, and the wheel surface of the rollers contacts the concrete shaft wall formed in the pouring space.

[0012] On the other hand, the present invention also provides an elevator shaft construction method, which uses the above-mentioned elevator shaft construction device and includes the following steps:

[0013] S1 erects a construction device between the bottom and second floors of the elevator shaft and sets up an outer formwork around the shaft opening. A support frame and suspension mechanism are erected on the first platform inside the shaft opening located on the second floor slab. The inner formwork is lifted by the suspension mechanism, and a pouring space is formed between the inner and outer formwork. Concrete is poured in the pouring space to form the first floor elevator shaft wall.

[0014] S2 removes the inner formwork from the elevator shaft wall, removes the outer formwork between the bottom and second floors of the elevator shaft, and sets an outer formwork between the second and third floors. It drives the support on the first platform to detach from the edge of the shaft opening on the second floor, activates the second telescopic mechanism to extend and lift the first platform. After the first platform is lifted, it is once again connected to the edge of the shaft opening on the third floor through the support. The inner formwork is lifted synchronously with the first platform and forms a pouring space between it and the outer formwork again. Concrete is poured in the pouring space to form the second floor elevator shaft wall.

[0015] S3 drives the support on the second platform to retract, activates the second telescopic mechanism to retract and lift the second platform. After the second platform is lifted, it is again connected to the inner wall of the second floor through the support and the second step is repeated until the entire elevator shaft is poured.

[0016] Based on the above technical solutions, preferably, step one, when installing the construction device between the bottom and second floors of the elevator shaft, includes the following steps.

[0017] S11 Pre-embeds fasteners for locking the support at the edge of the shaft opening on each floor of the elevator shaft;

[0018] S12 assembles the first platform and the second platform on the ground, and installs support components on both the first platform and the second platform;

[0019] S13 sets the second platform on the bottom ground and aligns it with the wellhead above. The first platform is set inside the wellhead on the second layer. The second telescopic mechanism is connected between the first platform and the second platform and is then tested.

[0020] Based on the above technical solutions, preferably, step two includes the following steps when demolding the inner template from the elevator shaft wall.

[0021] S21 drives the first telescopic mechanism located at the top layer to apply a static tensile force to the corresponding template strip to detach it from the concrete well wall;

[0022] S22 stops the first telescopic mechanism and disengages the connecting seat from the first telescopic mechanism, rotates the template strip around the hinge connection part of the template strip and disengages the template strip from the concrete well wall;

[0023] S23 sequentially detaches each template strip from the concrete wall from top to bottom along the vertical direction of the ground, completing the demolding of the entire first or second wall formwork.

[0024] The elevator shaft construction device and method of the present invention have the following advantages over the prior art:

[0025] (1) The wall formwork of the present invention is composed of multiple template strips connected by hinges, so that the inner template is divided into multiple parts and detached in sequence, instead of demolding the entire inner template. This reduces the demolding difficulty of the inner template. The telescopic mechanism and connecting seat enable each wall template and corner template to form the inner template. At the same time, the climbing component enables the construction system to move from bottom to top step by step. The suspension mechanism drives the inner template to rise layer by layer, thereby realizing the pouring of the elevator shaft layer by layer from bottom to top. This eliminates the need to erect scaffolding from bottom to top in the elevator shaft and to lower the working platform from the top of the elevator shaft, thereby greatly improving the pouring efficiency and reducing the construction cost.

[0026] (2) The present invention provides an anti-collision mechanism on the climbing component and support frame. The pulley on the anti-collision mechanism contacts the inner wall of the vertical structure, which not only avoids the problem of the construction system swaying left and right and colliding with the inner wall of the elevator shaft, but also helps the climbing component to move up and down along the vertical structure. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0028] Figure 1 This is a perspective view of the elevator shaft construction device of the present invention;

[0029] Figure 2 This is a front view of the elevator shaft construction according to the present invention;

[0030] Figure 3 This is a side view of the elevator shaft construction according to the present invention;

[0031] Figure 4 This is a partial side sectional view of the inner template of the present invention;

[0032] Figure 5 This is a partial side view of the demolded state of the inner template of the present invention;

[0033] Figure 6 This is a top view of the inner template of the present invention;

[0034] Figure 7 This is a schematic diagram of the installation steps of the climbing component in step one of the present invention, shown in Figures (a) to (h);

[0035] Figure 8 The following is a schematic diagram of the operation steps of the climbing component in step two of the present invention, from Figure (a) to Figure (f).

[0036] In the diagram: 1. Climbing assembly; 11. First platform; 12. Second platform; 13. Support unit; 14. Second telescopic mechanism; 101. Pouring space; 102. Door side; 103. Wellhead; 2. Support frame; 3. Outer formwork; 4. Inner formwork; 41. Corner formwork; 42. First wall formwork; 43. Second wall formwork; 44. Connecting seat; 45. First telescopic mechanism; 40. Formwork strip; 401. Step; 402. Flange; 5. Suspension mechanism; 6. Anti-collision mechanism. Detailed Implementation

[0037] The technical solutions of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0038] like Figure 1 As shown, an elevator shaft construction device of the present invention includes a climbing component 1, a support frame 2, an outer formwork 3, an inner formwork 4, and a suspension mechanism 5.

[0039] The purpose of elevator shaft construction is to pour the elevator shaft wall between the floor slabs. Therefore, before pouring, shaft openings 103 are opened from top to bottom on multiple floor slabs.

[0040] The climbing component 1 moves vertically along the ground between the upper and lower floors of the elevator shaft and can be fixed to one of the floors. Construction using the climbing component 1 eliminates the need for scaffolding at the same height as the elevator shaft's depth. The climbing component 1 moves from bottom to top, eliminating the need to lower a work platform from the top of the elevator shaft and then move it upwards layer by layer, thus significantly improving work efficiency. Furthermore, compared to the significant construction risks associated with suspending a work platform from the top of the elevator shaft using extremely long ropes, the climbing component 1, being fixed inside the elevator shaft, is much safer.

[0041] Support frame 2 is mounted on climbing component 1 and moves synchronously with climbing component 1. Support frame 2 is a frame structure, assembled from metal materials; support frame 2 consists of multiple platforms erected layer by layer from bottom to top, with a window set in the center of each platform, and ladders set between each platform to facilitate personnel movement.

[0042] The outer formwork 3 is set between the upper and lower floor slabs and surrounds the support frame 2. The outer formwork 3 forms the outer surface of the elevator shaft wall.

[0043] The inner formwork 4 is mounted on the support frame 2 and spaced around the inner contour of the outer formwork 3, forming a pouring space 101 between them. The inner formwork 4 encloses the inner surface of the elevator shaft wall. During pouring, the inner formwork 4 and the outer formwork 3 can be connected and locked together by connecting rods.

[0044] The suspension mechanism 5 is fixedly installed on the top of the support frame 2 and lifts the inner formwork 4 so that the inner formwork 4 is located above the climbing assembly 1. Typically, a crossbeam is installed at the top of the support frame 2, and hoists are installed at both ends of the crossbeam. Multiple hoists lift the casting formwork 3 by means of ropes or chains.

[0045] exist Figure 6 In a preferred embodiment shown, specifically, in order to enable the inner template 4 to be quickly lifted and cooperate with the outer template 3 for casting, the inner template 4 includes a corner mold 41, a first wall mold 42 and a second wall mold 43.

[0046] Typically, the radial cross-section of an elevator shaft is rectangular, with one side of the elevator shaft being the door side 102.

[0047] The four corner molds 41 are symmetrically arranged around the support frame 2 and are respectively aligned with the four corners of the rectangular section of the elevator shaft. The corner molds 41 move relative to the support frame 2 along the diagonal of the rectangular section of the elevator shaft and approach or move away from the outer template 3.

[0048] The first wall mold 42 is located on the side of the support frame 2 away from the door side 102. The first wall mold 42 moves horizontally toward or away from the door side 102 relative to the support frame 2.

[0049] Two second wall molds 43 are symmetrically arranged on both sides of the door side 102. The first wall mold 42 moves horizontally relative to the support frame 2 in the direction perpendicular to the moving direction of the first wall mold 42 and approaches or moves away from the outer template 3.

[0050] The four corner molds 41, the first wall mold 42, and the two second wall molds 43 move toward the outer template 3 at the same time and form the inner template 4.

[0051] exist Figure 5 In a preferred embodiment shown, in order to reduce the difficulty of demolding the inner template 4, both the first wall template 42 and the second wall template 43 include a plurality of template strips 40.

[0052] Several template strips 40 are connected end to end along the vertical direction of the ground. The edges of adjacent template strips 40 are hinged together. Each template strip 40 rotates relative to the adjacent template strip 40 around the hinged connection and detaches from the concrete well wall formed in the pouring space 101. The inner formwork 4 is composed of several template strips 40. Therefore, when demolding, it is easier to demold each template strip 40 separately than to demold the entire inner formwork 4 from the concrete wall, and it also avoids damage to each template strip 40 during demolding.

[0053] exist Figure 4 In a preferred embodiment shown, in order to drive the corner mold 41, the first wall mold 42 and the second wall mold 43 to move, the inner template 4 further includes a connecting seat 44 and a first telescopic mechanism 45.

[0054] Several connecting seats 44 are respectively installed on the end face of each template strip 40 away from the outer template 3. The connecting seats 44 can be connected to the free end of the first telescopic mechanism 45 by means of snap-fit ​​or screw connection.

[0055] Several first telescopic mechanisms 45 are arranged one-to-one between each connecting seat 44 and the support frame 2. One end of each first telescopic mechanism 45 is fixed to the support frame 2, and the other end is detachably connected to each connecting seat 44. The first telescopic mechanism 45 is an electric telescopic rod or a hydraulic telescopic rod.

[0056] exist Figure 5In a preferred embodiment shown, in order to ensure that the end faces of each template strip 40 facing the outer template 3 are flush and connected, so that the inner template 4 is tightly attached to the inner wall of the elevator shaft after pouring, steps 401 and flanges 402 are respectively provided at both ends of the end faces of each template strip 40 facing the outer template 3 in the vertical direction along the ground. The flanges 402 are located above the steps 401. The end faces of each template strip 40 facing the outer template 3 are flush and connected, and the flanges 402 of adjacent template strips 40 cooperate with the steps 401 to prevent concrete from leaking from the hinge connection of adjacent template strips 40.

[0057] exist Figure 3 In a preferred embodiment shown, in order to enable the climbing component 1 to climb along the elevator shaft and to be fixed at a certain position in the elevator shaft for pouring construction, the climbing component 1 includes a first platform 11, a second platform 12, a support part 13 and a second telescopic mechanism 14.

[0058] The first platform 11 and the second platform 12 are respectively located within the upper and lower well openings 103, with the first platform 11 directly above the second platform 12. Personnel can move between the first platform 11 and the second platform 12 via a ladder. The first platform 11 and the second platform 12 are also frame structures made of metal materials, with step stools installed on the frame structures for personnel to stand on. A support frame 2 is installed on the first platform 11.

[0059] At least two support sections 13 are arranged around the extension direction of the elevator shaft on the outer peripheral wall of the first platform 11 or the second platform 12 facing the outer template 3. The support sections 13 move horizontally towards the outer template 3 and overlap the edge of the shaft opening 103, or move horizontally away from the outer template 3 and detach from the edge of the shaft opening 103. The support sections 13 achieve telescopic movement through hydraulic telescopic rods; the end of the support section 13 facing the elevator shaft wall overlaps the edge of the shaft opening 103 and is locked by pre-embedded fasteners; specifically, the end of the support section 13 is generally provided with hooks or through holes so that the end of the support section 13 can be fixed to the shaft wall, or a climbing cone can be embedded in the shaft wall and the end of the support section 13 can be fastened to the climbing cone with fastening bolts.

[0060] The second telescopic mechanism 14 is disposed between the first platform 11 and the second platform 12. Both ends of the second telescopic mechanism 14 extend vertically along the ground and are respectively fixed to the first platform 11 and the second platform 12. The second telescopic mechanism 14 can change the distance between the first platform 11 and the second platform 12, causing them to move closer together or further apart. The second telescopic mechanism 14 is an electric telescopic rod or a hydraulic telescopic rod.

[0061] exist Figure 2In a preferred embodiment shown, since the overall height of the construction system is relatively high, the support frame 2 or the climbing component 1 or the support frame 2 or the suspension mechanism 5 of the construction system may sway left and right and may collide with the inner wall of the elevator shaft when the climbing component 1 or the support frame 2 or the suspension mechanism 5 of the construction system is erected. In order to avoid the above situation, an anti-collision mechanism 6 is also included.

[0062] The anti-collision mechanism 6 is located between the first platform 11 and the second platform 12. At least two rollers are provided on the outer perimeter of the anti-collision mechanism 6 along the extension direction of the elevator shaft, and the wheel surfaces of the rollers contact the concrete shaft wall formed within the pouring space 101. The anti-collision mechanism 6 can be multiple independent supports, each with rollers installed on it; the anti-collision mechanism 6 can also be a ring-shaped frame installed on the frame structure of the climbing component 1 or the support frame 2, with several rollers installed around the ring-shaped frame of the anti-collision mechanism 6.

[0063] like Figure 8 As shown, an elevator shaft construction method, employing the elevator shaft construction apparatus of any of the above embodiments, includes the following steps:

[0064] S1 erects a construction device between the bottom and second floors of the elevator shaft and sets an outer formwork 3 around the shaft opening 103. A support frame 2 and a suspension mechanism 5 are erected on the first platform 11 inside the shaft opening 103 located on the second floor slab. The inner formwork 4 is lifted by the suspension mechanism 5, and a pouring space 101 is formed between the inner formwork 4 and the outer formwork 3. Concrete is poured in the pouring space 101 to form the first floor elevator shaft wall.

[0065] S2 removes the inner formwork 4 from the elevator shaft wall, removes the outer formwork 3 between the bottom and second floors of the elevator shaft, and sets the outer formwork 3 between the second and third floors. The support part 13 on the first platform 11 is driven to detach from the edge of the shaft opening 103 of the second floor. The second telescopic mechanism 14 is activated to extend and lift the first platform 11. After the first platform 11 is lifted, it is again connected to the edge of the shaft opening 103 of the third floor through the support part 13. The inner formwork 4 is lifted synchronously with the first platform 11 and forms a pouring space 101 between it and the outer formwork 3. Concrete is poured in the pouring space 101 to form the second floor elevator shaft wall.

[0066] S3 drives the support part 13 on the second platform 12 to retract, activates the second telescopic mechanism 14 to retract and drive the second platform 12 to rise. After the second platform 12 is raised, it is again connected to the inner wall of the second floor through the support part 13, and the second step is repeated until the entire floor of the elevator shaft is poured.

[0067] exist Figure 7 In a preferred embodiment shown, step one, when erecting the construction device between the bottom and second floors of the elevator shaft, includes the following steps:

[0068] S11 A fastener for locking the support part 13 is pre-embedded on the edge of the shaft opening 103 on each floor of the elevator shaft;

[0069] S12 assembles the first platform 11 and the second platform 12 on the ground, and installs the support part 13 on both the first platform 11 and the second platform 12;

[0070] S13 sets the second platform 12 on the bottom ground and aligns it with the wellhead 103 above. The first platform 11 is set inside the wellhead 103 on the second layer. The second telescopic mechanism 14 is connected between the first platform 11 and the second platform 12 and is then debugged.

[0071] exist Figure 5 In a preferred embodiment shown, step two, when demolding the inner template 4 from the elevator shaft wall, includes the following steps:

[0072] S21 drives the first telescopic mechanism 45 located at the top layer to apply a static tensile force to the corresponding template strip 40 to detach it from the concrete well wall;

[0073] S22 stops the first telescopic mechanism 45 and disengages the connecting seat 44 from the first telescopic mechanism 45, rotates the template strip 40 around the hinge connection part of the template strip 40 and disengages the template strip 40 from the concrete well wall;

[0074] S23 sequentially detaches each template strip 40 from the concrete wall from top to bottom along the vertical direction of the ground, and completes the demolding of the entire first wall formwork 42 or the second wall formwork 43.

[0075] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An elevator shaft construction device, characterized in that, include: The climbing assembly (1) moves vertically along the ground between the upper and lower floors of the elevator shaft and can be fixed to one of the floors; The support frame (2) is mounted on the climbing assembly (1) and moves synchronously with the climbing assembly (1); The outer formwork (3) is set between the upper and lower floor slabs and surrounds the support frame (2); The inner template (4) is set on the support frame (2) and spaced around the inner contour of the outer template (3) and forms a casting space (101) between it and the outer template (3). The suspension mechanism (5) is fixedly installed on the top of the support frame (2) and lifts the inner template (4) so ​​that the inner template (4) is above the climbing component (1); The inner template (4) includes a corner template (41), a first wall template (42), a second wall template (43), a connecting seat (44), and a first telescopic mechanism (45). The radial cross-section of the elevator shaft is rectangular, and one side of the elevator shaft is the door side (102). The four corner molds (41) are arranged symmetrically in pairs around the support frame (2) and are respectively aligned with the four corners of the rectangular section of the elevator shaft. The corner molds (41) move relative to the support frame (2) along the diagonal direction of the rectangular section of the elevator shaft and approach or move away from the outer template (3). The first wall mold (42) is located on the side of the support frame (2) away from the door side (102), and the first wall mold (42) moves horizontally toward or away from the door side (102) relative to the support frame (2); Two second wall molds (43) are symmetrically arranged on both sides of the door side (102). The first wall mold (42) moves horizontally relative to the support frame (2) in the direction perpendicular to the moving direction of the first wall mold (42) and approaches or moves away from the outer template (3). The four corner molds (41), the first wall mold (42) and the two second wall molds (43) move toward the outer template (3) at the same time and form the inner template (4); Both the first wall mold (42) and the second wall mold (43) include several template strips (40); Several template strips (40) are connected end to end along the vertical direction of the ground, and the edges of adjacent template strips (40) are hinged together. Each template strip (40) rotates around the hinged connection relative to the adjacent template strip (40) and separates from the concrete well wall formed in the pouring space (101). Several of the connecting seats (44) are respectively arranged on the end face of each template strip (40) away from the outer template (3); Several first telescopic mechanisms (45) are arranged one-to-one between each connecting seat (44) and support frame (2). One end of each first telescopic mechanism (45) is fixed on the support frame (2) and the other end is detachably connected to each connecting seat (44).

2. The elevator shaft construction device according to claim 1, characterized in that: Each template strip (40) has a step (401) and a flange (402) respectively on its end face facing the outer template (3) in the vertical direction along the ground. The flange (402) is located above the step (401). The end faces of each template strip (40) facing the outer template (3) are flush and connected. The flange (402) of the adjacent template strip (40) cooperates with the step (401).

3. The elevator shaft construction device according to claim 1, characterized in that: The climbing component (1) includes a first platform (11), a second platform (12), a support (13), and a second telescopic mechanism (14). The elevator shaft has openings (103) on each floor slab. The first platform (11) and the second platform (12) are respectively set in the upper and lower wellheads (103). The first platform (11) is located directly above the second platform (12). A support frame (2) is set on the first platform (11). At least two of the support parts (13) are arranged around the extension direction of the elevator shaft on the outer peripheral wall of the first platform (11) or the second platform (12) facing the outer template (3). The support parts (13) move horizontally toward the outer template (3) and overlap the edge of the well opening (103) or move horizontally away from the outer template (3) and detach from the edge of the well opening (103). The second telescopic mechanism (14) is disposed between the first platform (11) and the second platform (12). The two ends of the second telescopic mechanism (14) extend vertically along the ground and are respectively fixed to the first platform (11) and the second platform (12). The second telescopic mechanism (14) can change the distance between the first platform (11) and the second platform (12) so that the first platform (11) and the second platform (12) are close to each other or far apart.

4. The elevator shaft construction device according to claim 3, characterized in that, Also includes: A collision avoidance mechanism (6) is disposed between the first platform (11) and the second platform (12); The anti-collision mechanism (6) has at least two rollers on its outer periphery, which are arranged around the elevator shaft extension direction. The roller surfaces are in contact with the concrete shaft wall formed in the pouring space (101).

5. A method for constructing an elevator shaft, using the elevator shaft construction device described in claim 3, characterized in that: Includes the following steps, S1 erects a construction device between the bottom and second floors of the elevator shaft and sets an outer formwork (3) around the shaft opening (103). A support frame (2) and a suspension mechanism (5) are erected on the first platform (11) inside the shaft opening (103) located on the second floor slab. The inner formwork (4) is lifted by the suspension mechanism (5), and a pouring space (101) is formed between the inner formwork (4) and the outer formwork (3). Concrete is poured in the pouring space (101) to form the first floor elevator shaft wall. S2 demolds the inner template (4) from the elevator shaft wall, removes the outer template (3) between the bottom layer and the second layer of the elevator shaft, and sets the outer template (3) between the second and third layers. It drives the support part (13) on the first platform (11) to detach from the edge of the shaft opening (103) of the second layer, activates the second telescopic mechanism (14) to extend and drive the first platform (11) to lift. After the first platform (11) is lifted, it is again connected to the edge of the shaft opening (103) of the third layer through the support part (13). The inner template (4) is lifted synchronously with the first platform (11) and forms a pouring space (101) between it and the outer template (3) again. Concrete is poured in the pouring space (101) to form the second layer elevator shaft wall. The steps involved in demolding the inner template (4) from the elevator shaft wall are as follows: S21 drives the first telescopic mechanism (45) located at the top layer to apply a static tensile force to the corresponding template strip (40) to detach it from the concrete well wall; S22 stops the first telescopic mechanism (45) and disengages the connecting seat (44) from the first telescopic mechanism (45), rotates the template strip (40) around the hinge connection part of the template strip (40) and disengages the template strip (40) from the concrete well wall; S23 sequentially removes each template strip (40) from the concrete wall from top to bottom along the vertical direction of the ground, and completes the demolding of the entire first wall formwork (42) or the second wall formwork (43); S3 drives the support part (13) on the second platform (12) to retract, activates the second telescopic mechanism (14) to retract and drive the second platform (12) to rise. After the second platform (12) is raised, it is again connected to the inner wall of the second floor through the support part (13), and the second step is repeated until the entire floor of the elevator shaft is poured.

6. The elevator shaft construction method according to claim 5, characterized in that: In step S1, the installation of the construction device between the bottom floor and the second floor of the elevator shaft includes the following steps: S11 pre-embeds fasteners for locking the support (13) on the edge of the shaft opening (103) of each floor of the elevator shaft; S12 assembles the first platform (11) and the second platform (12) on the ground, and installs support parts (13) on both the first platform (11) and the second platform (12). S13 The second platform (12) is set on the bottom ground and aligned with the wellhead (103) above. The first platform (11) is set in the wellhead (103) of the second layer. The second telescopic mechanism (14) is connected between the first platform (11) and the second platform (12) and is debugged.

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