Exterior wall I-beam hole formwork device and construction method thereof

Abstract

The application discloses a kind of outer wall I-shaped steel hole mouth formwork device and its construction method, formwork device includes: outside formwork, inside formwork, formwork fastening component and plugging piece;The outside formwork is located at the outside of I-shaped steel hole mouth;The inside formwork is located at the inside of building outer wall;The formwork fastening component is detachably connected with the outside formwork and the inside formwork;The plugging piece is fixed in the hole left by the formwork fastening component;By the outside formwork, the inside formwork and the formwork fastening component cooperate closely, close I-shaped steel hole mouth and adopt concrete plugging, then, adopt sleeve pipe to remove the outside formwork and the formwork fastening component, and the hole left by the plugging piece and concrete is handled, so that the outside formwork and the formwork component are conveniently removed, realize the recycling of spare parts, save cost, at the same time, the hole left by the plugging piece is conveniently handled, effectively enhance the waterproof performance and strength of building.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of outer wall hole construction equipment, and more particularly relates to an outer wall I-beam hole formwork device and a construction method thereof. BACKGROUND

[0002] In modern high-rise building construction, cantilever I-beams are generally used as supports for unloading platforms and outer scaffolds. After the removal of the later-stage scaffolds and I-beams, the I-beam holes left in the outer wall of the building need to be plugged to ensure the integrity and safety of the building structure. The traditional plugging method usually involves setting up a scaffold again or using a hanging basket for personnel to stand on, and then plugging the holes. However, this method is complicated, wasteful, and risky, and the construction space of some high-rise buildings is limited, especially in narrow or hard-to-reach areas, making it difficult to plug the holes.

[0003] In the prior art, a document with the document number CN115126276A discloses a plugging device for cantilever I-beam reserved holes and a construction method. The device includes an outer formwork, an inner formwork, iron wires, and a baffle. The outer formwork and the inner formwork are used to plug the reserved holes. The inner formwork has a reserved hole and an arc-shaped pouring opening at the top. A guide chute is provided at the arc-shaped pouring opening, and a fixed baffle is provided on the guide chute at the connection between the guide chute and the arc-shaped pouring opening. The rear end of the iron wire is fixed to the outer formwork, and the front end passes through the reserved hole in the inner formwork and is fastened by a nut. The baffle is detachably clamped between the fixed baffle on the guide chute and the inner side of the wall, used to plug the arc-shaped pouring opening on the inner formwork.

[0004] Although the plugging device of the document with the document number CN115126276A has the advantage of not needing to set up an outer wall support, and the overall structure is simple and easy to install, the outer formwork cannot be recycled, causing material waste and greatly increasing construction costs. Moreover, after construction is completed, the excess iron wires extending to the outside of the wall need to be cut, which may cause additional damage to the wall or leave uneven cut surfaces, requiring subsequent repair and increasing additional workload. SUMMARY

[0005] In view of the above defects or improvement needs of the prior art, the present application provides an outer wall I-shaped steel hole formwork device and a construction method thereof, which closely closes the I-shaped steel hole by cooperation of the outer formwork, the inner formwork and the formwork fastening component, and then adopts concrete plugging, after that, the outer formwork and the formwork component are removed by using a sleeve, and the remaining hole is processed by the plugging piece and concrete, so that the outer formwork and the formwork component are conveniently removed, the recycling of spare parts is realized, and the cost is saved, meanwhile, the remaining hole is conveniently processed by the plugging piece, the waterproof performance of the building is effectively enhanced, and the strength of the outer wall of the building is further improved.

[0006] In order to achieve the above-mentioned purpose, the present application provides an outer wall I-shaped steel hole formwork device, comprising: an outer formwork, an inner formwork, a formwork fastening component and a plugging piece.

[0007] The outer formwork comprises: a first formwork, a second formwork, a hinge and a magnetic accessory; the first formwork is fixedly connected with the second formwork through a plurality of hinges, and a plurality of magnetic accessories are respectively fixedly arranged at corresponding positions on the outer sides of the first formwork and the second formwork to form an outer formwork base piece; two outer formwork base pieces are formed by two first formworks and a plurality of hinges to constitute the outer formwork.

[0008] The inner formwork comprises: a third formwork, a pouring opening and a baffle; the third formwork is arranged on the inner side of the outer wall of the building, and a through hole is fixedly arranged in the middle part; the pouring opening is fixedly arranged on the upper side of the middle part of the third formwork; and the baffle is arranged on the side of the pouring opening close to the outer wall of the building and is adapted to the pouring opening.

[0009] The formwork fastening component comprises: a connecting iron wire, a traction rope, an elastic buckle and a sleeve; one end of each of a plurality of connecting iron wires is detachably connected with a plurality of hinges between the first formwork and the second formwork, and the other end of each of the connecting iron wires is detachably connected with a connecting piece; one end of the traction rope is detachably connected with the connecting piece, and the other end of the traction rope is detachably connected with the elastic buckle after passing through the sleeve and the through hole in sequence.

[0010] The plugging piece is fixedly arranged in the hole left after the formwork fastening component is removed, and is used for plugging the left hole.

[0011] Further, the connecting piece comprises a metal ring such as a triangular ring, a rectangular ring or a circular ring.

[0012] Further, the length of the traction rope is 1.5 to 2 times the distance between two adjacent I-shaped steel holes of the outer wall of the building.

[0013] Further, the inner side template comprises support rods and a stop block; the support rods are symmetrically fixed inside the inner side template with the through hole as the center; the stop block is sleeved between the support rods through the through hole in the stop block and the fastening bolts; and a through hole is fixed in the middle of the stop block for the traction rope to pass through.

[0014] Further, the template fastening component comprises a rotating rod; and the rotating rod is rotationally connected with the traction rope.

[0015] Further, the length of the rotating rod is greater than the distance between two adjacent support rods.

[0016] Further, the template fastening component comprises an inner side template support, which is arranged inside the inner side template and mainly comprises vertical telescopic rods, oblique telescopic rods and connecting rods; the connecting rods are sequentially fixedly connected to form a support frame matched with the inner side template; the vertical telescopic rods are fixedly arranged at the bottom end of the support frame; and the oblique telescopic rods are rotationally connected with one side of the support frame.

[0017] Another aspect of the present application provides a construction method of the outer wall H-shaped steel hole formwork device, which is implemented by using the formwork device described above, and characterized in that the method comprises the following steps:

[0018] S1: check the integrity of the formwork device, and clean the outer side template, the inner side template and the sleeve;

[0019] S2: connect one end of each of the connecting iron wires with the hinges between the first template and the second template, and connect the other end of each of the connecting iron wires with the connecting piece; connect one end of the traction rope with the connecting piece, and connect the other end of the traction rope with the elastic buckle; then, place the outer side template outside the building outer wall, and manually rotate the first template and the second template to be parallel;

[0020] S3: assemble the sleeve to the inner side template, pull the traction rope, completely unfold the outer side template, and pass the elastic buckle through the sleeve and the through hole, so that the elastic buckle is elastically opened to clamp the inner side template, thereby completing the fixation of the outer side template and the inner side template;

[0021] S4: pour concrete into the H-shaped steel hole through the pouring opening, and accelerate the condensation by using a vibrating rod; after pouring is completed, the pouring opening is sealed by using the stop plate.

[0022] S5: after the concrete is completely coagulated, the elastic buckle is pushed into the sleeve, the inner side formwork is removed, the sleeve in the I-beam hole is abutted by another sleeve, and the sleeve in the I-beam hole is knocked out to the outside of the building outer wall by knocking, so that the outer side formwork and the sleeve in the I-beam hole are removed;

[0023] S6: the plugging member is placed in the hole left after the sleeve is removed in step S5, grouting is performed from the inside, and the inner side formwork is plugged, and after the concrete is coagulated, the plugging construction of the I-beam hole is completed;

[0024] S7: after the I-beam hole is checked to be normal, steps S3 to S6 are repeated to perform the plugging operation of the I-beam hole below, until the whole construction is completed.

[0025] Further, the other sleeve is fixedly provided with an opening at the end in contact with the sleeve in the I-beam hole, and the opening is matched with the traction rope.

[0026] Overall, compared with the prior art, the above technical scheme conceived by the present application can achieve the following beneficial effects:

[0027] 1. The formwork device of the present application tightly closes the I-beam hole by cooperation of the outer side formwork, the inner side formwork and the formwork fastening component, and then removes the outer side formwork and the formwork fastening component by the sleeve, and processes the left hole by the plugging member and concrete, so that the outer side formwork and the formwork component are conveniently removed, the parts are recycled, the cost is saved, the left hole is conveniently processed by the plugging member, the waterproof performance of the building is effectively enhanced, and the strength of the building outer wall is further improved.

[0028] 2. The formwork device of the present application abuts the sleeve in the I-beam hole by another sleeve, and knocks out the sleeve in the I-beam hole to the outside of the building outer wall by knocking, so that the outer side formwork and the sleeve in the I-beam hole are removed, and due to the traction of the traction rope, the outer side formwork and the sleeve are dropped in the I-beam hole of the next layer after removal, the formwork device is recycled, and the construction efficiency is improved.

[0029] 3. The formwork device of the present application ensures the structural stability of the outer side formwork by cooperation of the hinges and the magnetic accessories, and has simple structure and convenient operation.

[0030] 4. The formwork device of the present application further enhances the stability of the formwork device in the pouring process by assisting the inner side formwork with the inner side formwork support, and improves the construction quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 A cross-sectional view of the formwork device in a tightened state according to an embodiment of the present invention;

[0032] Figure 2 This is a cross-sectional view of an embodiment of the present invention when the outer template is not unfolded;

[0033] Figure 3 This is a cross-sectional view of an embodiment of the present invention when the inner template is removed;

[0034] Figure 4 This is a cross-sectional view of an embodiment of the present invention when a plugging member is used for repair;

[0035] Figure 5 This is a schematic flow chart of the steps of the construction method according to an embodiment of the present invention;

[0036] Figure 6 This is a schematic diagram of the structure of the fifth embodiment of the present invention using a rotating rod and two supporting rods for fastening;

[0037] Figure 7 This is a schematic diagram of the structure of the fifth embodiment of the present invention using a rotating rod and three supporting rods for fastening;

[0038] Figure 8 This is a structural diagram of the inner formwork support used in Example 6 of the present invention.

[0039] In all the drawings, the same figure marks represent the same technical features, specifically: 1-I-beam opening, 2-outer formwork, 21-first formwork, 22-second formwork, 23-hinge, 24-magnetic adsorption part, 3-inner formwork, 31-third formwork, 311-through hole, 32-pouring mouth, 33-baffle, 34-support rod, 35-block, 41-connecting wire, 411-connecting part, 42-traction rope, 43-elastic buckle, 44-sleeve, 441-notch, 45-rotating rod, 46-inner formwork bracket, 461-vertical telescopic rod, 462-oblique telescopic rod, 463-connecting rod, 5-sealing part. DETAILED DESCRIPTION

[0040] In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only intended to illustrate the present invention and are not intended to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

[0041] Example 1

[0042] like Figures 1 to 4As shown, the embodiment 1 of the present application provides a device for supporting and forming an I-beam hole of an outer wall, which comprises: an outer formwork 2, an inner formwork 3, a formwork fastening component and a blocking member 5; the outer formwork 2 is arranged outside the I-beam hole 1; the inner formwork 3 is arranged inside the outer wall of the building; the formwork fastening component is detachably connected to the outer formwork 2 and the inner formwork 3; the blocking member 5 is fixedly arranged in the hole left by the formwork fastening component; the I-beam hole 1 is tightly closed by the outer formwork 2, the inner formwork 3 and the formwork fastening component, and then the outer formwork 2 and the formwork fastening component are removed by using a sleeve, and the hole left is treated by the blocking member 5 and concrete, so that the outer formwork and the formwork component are conveniently removed, the parts are recycled, the cost is saved, the hole left is conveniently treated by the blocking member 5, the waterproof performance of the building is effectively enhanced, and the strength of the outer wall of the building is further improved.

[0043] Specifically, as shown in the figure, Figures 1 to 3 The outer formwork 2 is arranged outside the I-beam hole 1 and is used for tightly closing the outside of the I-beam hole 1, and comprises: a first formwork 21, a second formwork 22, a hinge 23 and a magnetic accessory 24;

[0044] The first formwork 21 is fixedly connected to the second formwork 22 through the hinges 23, and the magnetic accessories 24 are fixedly arranged at corresponding positions outside the first formwork 21 and the second formwork 22, thereby forming the basic part of the outer formwork 2;

[0045] Two basic parts of the outer formwork 2 are formed by the two first formworks 21 and the hinges 23;

[0046] Preferably, the magnetic accessory 24 further enhances the connection stability of the first formwork 21 and the second formwork 22;

[0047] Preferably, the first formwork 21 and the second formwork 22 are square aluminum alloy plates as a whole;

[0048] Preferably, the hinge 23 is mainly composed of a non-magnetic metal material such as aluminum alloy or zinc alloy;

[0049] During the blocking process, the size of the unfolded outer formwork 2 is greater than the size of the I-beam hole 1, so that the I-beam hole 1 is completely closed;

[0050] Specifically, as shown in the figure, Figures 1 to 3 The inner formwork 3 is arranged inside the outer wall of the building and is used for tightly closing the outside of the I-beam hole 1 and pouring concrete to block the I-beam hole 1, and comprises: a third formwork 31, a pouring opening 32 and a baffle 33;

[0051] The third template 31 is arranged on the inner side of the building outer wall;

[0052] Preferably, a through hole 311 is fixedly arranged in the middle of the third template 31;

[0053] Preferably, the through hole 311 is circular;

[0054] The pouring opening 32 is fixedly arranged on the upper side of the middle of the third template 31, and is used for pouring concrete;

[0055] Preferably, the pouring opening 32 is a groove such as a triangular square column or a triangular circular column;

[0056] The baffle 33 is arranged on the side of the pouring opening 32 close to the building outer wall, and is matched with the pouring opening 32, and is used for plugging the contact surface between the pouring opening 32 and the building outer wall;

[0057] Specifically, as shown in Figures 1 to 3 The template fastening component detachably connects the outer side template 2 and the inner side template 3, and is used for fastening the outer side template 2 and the inner side template 3 to realize plugging of the I-beam hole 1, and comprises a connecting iron wire 41, a traction rope 42, an elastic buckle 43 and a sleeve pipe 44;

[0058] One end of each of the connecting iron wires 41 is detachably connected with a plurality of hinges between the first template 21 and the second template 22, and the other end is detachably connected with a connecting piece 411;

[0059] Preferably, the connecting piece 411 comprises a metal ring such as a triangular ring, a rectangular ring or a circular ring;

[0060] One end of the traction rope 42 is detachably connected with the connecting piece 411, and the other end is detachably connected with the elastic buckle 43 after passing through the sleeve pipe 44 and the through hole 311 in sequence;

[0061] Preferably, the length of the traction rope 42 is 1.5 to 2 times the distance between two adjacent I-beam holes 1 of the building outer wall in the vertical direction;

[0062] Preferably, the sleeve pipe 44 is matched with the through hole 311, and the length of the sleeve pipe 44 is greater than the distance from the inner side of the outer side template 2 to the outer side of the inner side template 3;

[0063] In the plugging process, the elastic buckle 43 passes through the sleeve pipe 44 and the through hole 311 in sequence by pulling the traction rope 42, so as to clamp the outer side template 2 and the inner side template, which is convenient to operate and increases construction efficiency;

[0064] Specifically, as shown in Figure 1 andFigure 4 As shown, the plugging member 5 is fixed in the hole left after the removal of the formwork fastening component, for plugging the left hole;

[0065] Preferably, the length of the plugging member 5 is the same as the thickness of the I-beam hole 1;

[0066] Preferably, the plugging member 5 is a porous and hollow round rod with one end closed;

[0067] In an optional embodiment, the plugging member 5 mainly comprises a reinforcing bar and a disc fixedly connected with the reinforcing bar, and the disc is adapted to the hole;

[0068] In the plugging process, since the I-beam holes 1 of each floor basically correspond, when the construction is from top to bottom, after the removal of the inner formwork 3, the sleeve 44 in the I-beam hole 1 is resisted by another sleeve 44, and the sleeve 44 in the I-beam hole 1 is knocked out to the outside of the building outer wall by knocking, thereby the outer formwork 2 and the sleeve 44 in the I-beam hole 1 are removed, and due to the traction of the traction rope 42, the outer formwork 2 and the sleeve 44 after removal can fall in the I-beam hole 1 of the next floor, realizing the recycling use of the formwork device and improving the construction efficiency;

[0069] Embodiment 2

[0070] As shown in the embodiment 1, the embodiment 2 of the present application provides a construction method of the I-beam hole formwork device of the outer wall, comprising the following steps: Figure 5

[0071] S1: checking the integrity of the formwork device, cleaning the outer formwork 2, the inner formwork 3 and the sleeve 44;

[0072] S2: connecting one end of each of the connecting iron wires 41 with each of the hinges between the first formwork 21 and the second formwork 22, and connecting the other end of each of the connecting iron wires 41 with the connecting member 411; connecting one end of the traction rope 42 with the connecting member 411, and connecting the other end of the traction rope 42 with the elastic buckle 43; then, placing the outer formwork 2 outside the building outer wall, and manually turning the first formwork 21 and the second formwork 22 to be parallel;

[0073] S3: assembling the sleeve 44 to the inner formwork 3, pulling the traction rope 42, completely unfolding the outer formwork 2, and passing the elastic buckle 43 through the sleeve 44 and the through hole 311, so that the elastic buckle 43 is elastically opened to clamp the inner formwork 3, that is, the fixation of the outer formwork 2 and the inner formwork 3 is completed;

[0074] ​S4: pouring concrete into the I-beam opening 1 through the pouring port 32, while accelerating the setting by a vibrator. After the concrete is fully poured, the baffle 33 is used to seal the pouring port 32;

[0075] S5: After the concrete is completely solidified, the elastic buckle 43 is pushed into the sleeve 44, the inner formwork 3 is removed, another sleeve 44 is used to press against the sleeve 44 in the I-beam opening 1, and the sleeve 44 in the I-beam opening 1 is knocked out to the outside of the building exterior wall, thereby removing the outer formwork 2 and the sleeve 44 in the I-beam opening 1;

[0076] S6: inserting the plugging member 5 into the hole left after the sleeve 44 is removed in step S5, injecting grout from the inside, and sealing it with the inner template 3. After the concrete solidifies, the sealing construction of the I-beam opening 1 is completed;

[0077] S7: After checking that the blocked I-beam opening 1 is normal, repeat steps S3 to S6 to block the I-beam opening 1 below it until all construction is completed.

[0078] Example 3

[0079] like Figure 3 As shown, based on Example 2, in Example 3 of the present invention,

[0080] The end of the other sleeve 44 that contacts the sleeve 44 in the I-beam hole 1 is fixed with a notch 441, and the notch 441 is adapted to the traction rope 42 to reduce damage to the traction rope 42 when struck.

[0081] Other technical features are the same as those in Example 1 and can achieve the same technical effects, so they will not be described in detail here.

[0082] Example 4

[0083] like Figure 6 and Figure 7 As shown, based on Example 1, in Example 4 of the present invention,

[0084] The length of the sleeve 44 is greater than the distance from the inner side of the outer template 2 to the inner side of the inner template 3;

[0085] The inner template 3 includes: a support rod 34 and a stopper 35;

[0086] A plurality of support rods 34 are symmetrically fixed on the inner side of the inner template 3 with the through hole 311 as the center;

[0087] Preferably, the support rod 34 is a metal rod with external threads;

[0088] Preferably, the support rod 34 is sleeved with a protective sleeve at one end to enhance construction safety.

[0089] The stopper 35 is sleeved between the support rods 34 through the internal through holes and fastening bolts, for limiting the sleeve pipe 44 and assisting in removing the sleeve pipe 44 during form removal.

[0090] Preferably, the stopper 35 is fixedly provided with a through hole in the middle for the traction rope 42 to pass through.

[0091] The form fastening component comprises a rotating rod 45.

[0092] The rotating rod 45 is rotationally connected with the traction rope 42.

[0093] Preferably, the length of the rotating rod 45 is greater than the distance between two adjacent support rods 34.

[0094] During plugging, the stopper 35 is sleeved between the support rods 34, and the rotating rod 45 is rotationally connected with the traction rope 42 passing through the stopper 35 outside the support rods 34. By rotating the rotating rod 45 to pull the traction rope 42 between the outside formwork 2 and the inside formwork 3 to the stopper 35, the stopper 35 cannot slide with the support rods 34, at this time, the rotating rod is in close contact with two adjacent support rods 34, that is, the fastening work of the outside formwork 2 and the inside formwork 3 is completed.

[0095] Other technical features and embodiments 1 are the same, and the same technical effects can be achieved, which will not be described here.

[0096] Embodiment 5

[0097] As shown in Figure 8 Embodiment 5, based on Embodiment 1,

[0098] The form fastening component comprises an inside formwork support 46, which is arranged inside the inside formwork 3 to support and fix the inside formwork 3.

[0099] The inside formwork support 46 mainly comprises vertical telescopic rods 461, inclined telescopic rods 462 and connecting rods 463.

[0100] A plurality of connecting rods 463 are sequentially fixedly connected to form a support frame matched with the inside formwork 3.

[0101] A plurality of vertical telescopic rods 461 are fixedly arranged at the bottom end of the support frame.

[0102] Some of the oblique telescopic rods 462 are rotatably connected to one side of the support frame.

[0103] Other technical features and embodiments are the same as those of Embodiment 1 and can achieve the same technical effects, and are not described here.

[0104] It should be noted that if the present application embodiments involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement condition, etc. between components in a certain posture (as shown in the drawings), and if the certain posture changes, the directional indications also change accordingly.

[0105] In addition, if the present application embodiments involve descriptions of "first", "second", etc., the "first", "second", etc. descriptions are only for description purposes and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of indicated technical features. Therefore, the features limited by "first", "second" can explicitly or implicitly include at least one of the features. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the realization of ordinary skilled in the art, when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist and is not within the protection scope of the present application.

[0106] In this patent, the terms "include", "contain" or any other variant thereof are intended to cover non-exclusive inclusion, so that the process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or device. Without more limitations, the elements defined by the statement "include" do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0107] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit it; those skilled in the art can easily understand that the above description is only the preferred embodiment of the present application, and is not used to limit the present application, any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A device for supporting formwork of an opening of an external wall I-beam, characterized in that, include: An outer template (2), an inner template (3), template fastening components and a blocking member (5); The outer template (2) comprises: a first template (21), a second template (22), a hinge (23) and a magnetic adsorption member (24); the first template (21) is fixedly connected to the second template (22) through a plurality of the hinges (23); the plurality of the magnetic adsorption members (24) are respectively fixedly arranged at corresponding positions outside the first template (21) and the second template (22), forming a base member of the outer template (2); the two base members of the outer template (2) constitute the outer template (2) through their two first templates (21) and a plurality of the hinges (23); The inner template (3) comprises: a third template (31), a pouring port (32) and a baffle (33); the third template (31) is arranged on the inner side of the building's exterior wall, and a through hole (311) is fixedly provided in the middle; the pouring port (32) is fixedly arranged on the upper side of the middle of the third template (31); the baffle (33) is arranged on the side of the pouring port (32) close to the building's exterior wall, and is adapted to the pouring port (32); The template fastening component includes: a connecting wire (41), a traction rope (42), an elastic buckle (43) and a sleeve (44); one end of the connecting wires (41) is detachably connected to the hinges between the first template (21) and the second template (22), and the other end is detachably connected to the connecting piece (411); one end of the traction rope (42) is detachably connected to the connecting piece (411), and the other end is detachably connected to the elastic buckle (43), and then passes through the sleeve (44) and the through hole (311) in sequence; The blocking member (5) is fixedly arranged in the hole left after the template fastening component is removed, and is used to block the remaining hole.

2. The formwork support device of claim 1, wherein The connecting member (411) comprises a metal ring such as a triangular ring, a rectangular ring or a circular ring.

3. The formwork support device of claim 1, wherein The length of the traction rope (42) is 1.5 to 2 times the distance between two vertically adjacent I-beam openings (1) on the building's exterior wall.

4. The formwork device according to any one of claims 1 to 3, characterized in that The inner template (3) comprises: a support rod (34) and a stopper (35); a plurality of the support rods (34) are symmetrically fixed on the inner side of the inner template (3) with the through hole (311) as the center; the stopper (35) is sleeved between the plurality of the support rods (34) through a plurality of through holes and a plurality of fastening bolts therein, and a through hole is fixedly provided in the middle of the stopper (35) for facilitating the passage of the traction rope (42).

5. The formwork support device of claim 4, wherein The template fastening component comprises a rotating rod (45); the rotating rod (45) is rotatably connected to the traction rope (42).

6. The form assembly of claim 5, wherein: The length of the rotating rod (45) is greater than the distance between two adjacent support rods (34).

7. The formwork device according to any one of claims 1 to 3, wherein The template fastening component includes an inner template support (46), and the inner template support (46) is arranged on the inner side of the inner template (3), and mainly includes a vertical telescopic rod (461), an oblique telescopic rod (462) and a connecting rod (463); a plurality of the connecting rods (463) are fixedly connected in sequence to form a support frame adapted to the inner template (3); a plurality of the vertical telescopic rods (461) are fixedly arranged at the bottom end of the support frame; and a plurality of the oblique telescopic rods (462) are rotatably connected to one side of the support frame.

8. A construction method of a formwork device for an opening of an external wall I-beam, which is implemented by using the formwork device according to any one of claims 1 to 7, characterized in that, The steps include: S1: Check the integrity of the formwork device and clean the outer formwork (2), the inner formwork (3) and the sleeve (44); S2: Connect one end of a plurality of connecting wires (41) to a plurality of hinges between the first template (21) and the second template (22), and connect the other ends thereof to the connecting member (411); connect one end of the traction rope (42) to the connecting member (411), and connect the other end thereof to the elastic buckle (43); then, place the outer template (2) on the outside of the building exterior wall, and manually rotate the first template (21) and the second template (22) to be parallel; S3: Assemble the sleeve (44) to the inner template (3), pull the traction rope (42), fully unfold the outer template (2), and pass the elastic buckle (43) through the sleeve (44) and the through hole (311), so that the elastic buckle (43) elastically opens to clamp the inner template (3), thereby completing the fixation of the outer template (2) and the inner template (3); S4: pouring concrete into the I-beam hole (1) through the pouring port (32), while accelerating the setting by a vibrating rod, and after the concrete is fully poured, sealing the pouring port (32) with the baffle (33); S5: After the concrete is completely solidified, the elastic buckle (43) is moved into the sleeve (44), the inner formwork (3) is removed, another sleeve (44) is used to press against the sleeve (44) in the I-beam opening (1), and the sleeve (44) in the I-beam opening (1) is knocked out to the outside of the building exterior wall, thereby removing the outer formwork (2) and the sleeve (44) in the I-beam opening (1); S6: placing the plugging member (5) into the hole left after the sleeve (44) is removed in step S5, injecting grout from the inside, and sealing it with the inner template (3). After the concrete solidifies, the sealing construction of the I-beam hole (1) is completed; S7: After checking that the blocked I-beam opening (1) is normal, repeat steps S3 to S6 to block the I-beam opening (1) below it until all the construction is completed.

9. The construction method according to claim 8, characterized in that, An end of the other sleeve (44) in contact with the sleeve (44) in the I-beam hole (1) is fixedly provided with a notch (441), and the notch (441) is adapted to the traction rope (42).

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