A detachable formwork device for floor hole sealing

Abstract

The utility model provides a kind of floor hole plugging with formwork support device of easy disassembly, including main support piece, at least two horizontal support rods of horizontal wear in main support piece and equiangular distribution and vertical setting and the support column of connection with main support piece, horizontal support rod and main support piece sliding telescopic cooperation;Support column is connected with horizontal support rod by drive mechanism and is used for the sliding telescopic of driving horizontal support rod;Main support piece and horizontal support rod are all equipped with the top support rod for supporting plugging formwork. The utility model is by setting horizontal support rod and main support piece sliding telescopic cooperation, so that top support rod can support different size area formwork;Support column is connected with horizontal support rod by drive mechanism, so that by the rotation of support column can drive the sliding telescopic of horizontal support rod, to play the role of adjusting support area.

Description

Technical Field

[0001] This utility model relates to the field of building construction technology, and in particular to a formwork support device for sealing floor slab openings. Background Technology

[0002] During construction, measuring holes, material transfer holes, and pump pipe holes are typically left in floor slabs; these holes are collectively referred to as hoisting holes. Some of these are also hoisting holes for equipment. All these holes need to be sealed after construction. However, the size of these holes ranges from tens of centimeters square to several square meters. During the sealing process, formwork is required for concrete pouring.

[0003] However, traditional formwork for floor slab openings has the following drawbacks in construction:

[0004] (1) Wooden formwork support: ① It is necessary to cut wooden boards on site, which has poor size adaptability (it cannot be used when the opening deviation is ±10mm), and the material loss rate is 20%-30%; ② It is fixed by hanging with iron wire, which is easy to loosen and cause concrete leakage (leakage rate exceeds 40%), and the honeycomb surface rate of the bottom of the floor slab reaches 35% after repair.

[0005] (2) Precast plastic mold support: ① Insufficient versatility (only suitable for standard openings), non-standard openings need to be customized, increasing costs by 50%; ② When disassembling, the adhering concrete needs to be removed, the mold breakage rate is ≥40%, and it cannot be reused.

[0006] All of the above-mentioned formwork methods suffer from low construction efficiency. Furthermore, after the sealing is completed, it requires waiting for the concrete to fully set (12 hours) before manual removal. This severely impacts the scheduling of work processes, especially in the construction of standard floors, where it takes even longer.

[0007] Chinese utility model patent application CN205100583U, published on March 23, 2016, relates to a pipe hole sealing device for floor slabs. The device includes a base, an adjusting member, and a support plate. The adjusting member is fixed at both ends to the base and the support plate, and its length is adjustable. The main support plate is polygonal, and there are multiple secondary support plates. These secondary support plates are sequentially hinged to the main support plate along its circumference via hinges. The main support plate and the secondary support plates can be joined to form a support plane. The device increases or decreases the support area by folding the secondary support plates. However, the adjustment range of the support area is limited, and it is only suitable for a small adjustment range. Furthermore, the secondary support plates are hinged to the main support plate, and regardless of the type of hinge used, the supporting force of the secondary support plates is extremely limited. Summary of the Invention

[0008] To address the aforementioned technical problems, this utility model proposes a formwork support device for sealing floor slab openings that is easy to dismantle, thereby solving the problem of the lack of existing floor slab opening sealing devices with a large applicable support area, good support force, and easy installation and dismantling.

[0009] To achieve the above objectives, the technical solution of this utility model is implemented as follows:

[0010] A formwork support device for sealing floor openings that is easy to dismantle includes a main support member, at least two horizontal support rods arranged at equal angles and passing through the main support member, and a vertical support column connected to the main support member. The horizontal support rods are slidably and telescopically connected to the main support member. The support column is connected to the horizontal support rods via a drive mechanism to drive the sliding and telescopic movement of the horizontal support rods. Both the main support member and the horizontal support rods are provided with top support rods for supporting the sealing template. This invention, by setting the horizontal support rods to slide and telescopically connect with the main support member, allows the top support rods to support templates of different sizes. The support column is connected to the horizontal support rods via a drive mechanism, so that the rotation of the support column drives the sliding and telescopic movement of the horizontal support rods, thereby adjusting the supported area.

[0011] Furthermore, the main support component includes a cylindrical body and a horizontal cylindrical body arranged at equal angles and connected to the cylindrical body; the upper end of the cylindrical body is provided with the top support rod and the lower end is connected to the support column; the horizontal support rod passes through the horizontal cylindrical body and is slidably connected to the horizontal cylindrical body.

[0012] Furthermore, the driving mechanism includes a horizontal lead screw rotatably connected to the horizontal cylinder and a rotation drive structure for driving the horizontal lead screw to rotate; the horizontal support rod is provided with a long internal threaded hole for threaded connection with the horizontal lead screw; a sliding limit structure is provided between the horizontal support rod and the horizontal cylinder to prevent the horizontal support rod from rotating.

[0013] Furthermore, the sliding limiting structure includes circumferentially distributed grooves on the horizontal support rod and a slider disposed in the horizontal cylinder and cooperating with the grooves; the grooves extend along the length direction of the horizontal support rod; the outer periphery of the inner end of the horizontal support rod is provided with a boss that can abut against the slider to prevent the horizontal support rod from slipping out of the horizontal cylinder.

[0014] Furthermore, the inner end of the horizontal lead screw and the upper end of the support column both penetrate into the cylindrical body; the rotation drive structure includes a driven bevel gear connected to the inner end of the horizontal lead screw and a driving bevel gear connected to the upper end of the support column, the driving bevel gear meshing with the driven bevel gear; and the support column is rotatably connected to the cylindrical body to drive the rotation of the horizontal lead screw.

[0015] Furthermore, the lower end of the cylindrical body is provided with a vertical cylindrical body sleeved outside the supporting column, and the supporting column is rotatably connected to the vertical cylindrical body; an anti-rotation locking device is provided between the supporting column and the vertical cylindrical body.

[0016] Furthermore, the anti-rotation locking component includes an end cap sleeved on the support column, the end cap having a short internal threaded cylinder, the short internal threaded cylinder being threadedly connected to the outer side of the lower end of the vertical cylinder; the end cap and the support column are clearance-fitted; and a ring platform that can abut against the lower end of the vertical cylinder is fixedly connected to the support column; and the ring platform is located between the vertical cylinder and the end cap.

[0017] Furthermore, in order to better tighten the formwork with the formwork support device for sealing the opening in the floor slab, the lower end of the support column is provided with an adjustable support component.

[0018] Furthermore, the adjustable height support assembly includes a long internally threaded cylinder vertically connected to the lower end of the support column, a vertical stud threadedly connected to the long internally threaded cylinder, and a support base rotatably connected to the vertical stud.

[0019] Furthermore, a rotating handle is fixedly connected to the vertical stud; a smooth rod is provided at the lower end of the vertical stud, and the support base includes a base plate and a support cylinder provided on the base plate, with the smooth rod rotatably connected inside the support cylinder.

[0020] The beneficial effects of this utility model are:

[0021] 1. This utility model, by setting a horizontal support rod and a main support member in a sliding and telescopic cooperation, enables the top support rod to support templates of different sizes;

[0022] 2. The support column of this utility model is connected to the horizontal support rod through a drive mechanism, so that the horizontal support rod can be slidably extended and retracted by rotating the support column, thereby adjusting the support area.

[0023] 3. This utility model uses a rotating anti-rotation locking component to gradually press the end cap against the ring platform, thereby preventing the support column from rotating and avoiding the horizontal support rod from sliding due to the random rotation of the support column.

[0024] 4. This utility model, through the cooperation of the slider and the groove between the horizontal cylinder and the horizontal support rod, not only restricts the horizontal support rod to slide, but also provides support for the horizontal support rod, so that the top support rod on the horizontal support rod has a stable support function.

[0025] 5. This utility model uses an adjustable support component, which allows the upper main support component to move upward by rotating the vertical stud, the long internal threaded cylinder and the support column during the later stage of formwork erection, so that each top support rod is pressed against the template that seals the opening. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of this utility model 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 this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 This is a schematic diagram of the structure of this utility model;

[0028] Figure 2 for Figure 1 A magnified view of part A in the diagram.

[0029] In the diagram: 1. Cylindrical body, 2. Horizontal support rod, 3. Horizontal cylinder, 4. Horizontal lead screw, 5. Driven bevel gear, 6. Driving bevel gear, 7. Vertical cylinder, 8. Anti-rotation locking element, 9. Ring platform, 10. Support column, 11. Long internal threaded cylinder, 12. Vertical stud, 13. Rotating handle, 14. Support cylinder, 15. Template. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0031] like Figure 1As shown in Embodiment 1 of this utility model, a formwork support device for sealing floor openings that is easy to dismantle includes a main support member, at least two horizontal support rods 2 horizontally inserted on the main support member, and a vertically arranged support column 10. The support column 10 is connected to the main support member and supports the entire main support member and the horizontal support rods 2 thereon. Two horizontal support rods 2 can be used, preferably three to four. The horizontal support rods 2 are arranged at equal angles on the main support member, so that the top view of the main support member is a straight line, a Y-shape, or a cross shape. Both the main support member and the horizontal support rods 2 are provided with top support rods, and each top support rod has a support pad at its upper end. By setting a template for sealing floor openings at the upper end of the top support rods, and with the support column 10 supported at its lower end on the lower floor slab, the formwork support device for sealing floor openings of this utility model functions as a template 15 for sealing. Furthermore, the horizontal support rod 2 slides and extends in conjunction with the main support member, allowing the top support rod to support templates 15 of different sizes. The support column 10 is connected to the horizontal support rod 2 via a drive mechanism to drive the sliding extension and retraction of the horizontal support rod 2, allowing the top support rod on the horizontal support rod 2 to move inward and outward, adjusting the support area of ​​the top support rod. This adjusts the support area, thus serving the purpose of adjusting the template for sealing openings of different sizes. The adjustment range is large, and the support is relatively stable. In this embodiment, this application can be used for formwork support for sealing openings ranging from 200*200 to approximately 1200*1200. Beyond this range, multiple formwork support devices for sealing floor openings can be used. During use, this application facilitates formwork erection and dismantling, shortening the sealing time.

[0032] Furthermore, such as Figure 1 and Figure 2 As shown, the main support component includes a vertical cylindrical body 1 and at least two horizontal cylindrical bodies 3 connected to the cylindrical body 1. The number of horizontal cylindrical bodies 3 is the same as the number of horizontal support rods 2. Two to four horizontal cylindrical bodies 3 are arranged at equal angles on the side wall of the cylindrical body 1. The upper end of the cylindrical body 1 is closed and then provided with the top support rod, and the lower end of the cylindrical body 1 is connected to the support column 10. The horizontal support rods 2 pass through the horizontal cylindrical bodies 3 along the length direction and are slidably connected to the horizontal cylindrical bodies 3, with the sliding direction along the length direction of the horizontal cylindrical bodies 3.

[0033] Furthermore, such as Figure 1 and Figure 2As shown, the driving mechanism includes a horizontal lead screw 4 rotatably connected within a horizontal cylinder 3 and a rotation drive structure for driving the horizontal lead screw 4 to rotate. The rotation drive structure is disposed within the cylindrical body 1 of the main support member. The horizontal lead screw 4 is disposed within the horizontal support rod 2 along its length. The horizontal support rod 2 has a cavity with internal threads forming a long internal threaded hole that mates with the horizontal lead screw 4, allowing the horizontal lead screw 4 to pass through and be threadedly connected to the horizontal support rod 2. One end of the horizontal lead screw 4 near the cylindrical body 1 passes into the cylindrical body 1, while the portion of the horizontal lead screw 4 near the cylindrical body 1 protrudes from the horizontal support rod 2. This portion is rotatably connected to the horizontal cylinder 3 via a bearing, thus allowing the horizontal lead screw 4 to rotate. A sliding limiting structure is provided between the horizontal support rod 2 and the horizontal cylinder 3 to prevent the horizontal support rod 2 from rotating. When the rotation drive structure drives the horizontal lead screw 4 to rotate, under the action of the threaded connection, the horizontal support rod 2 can only slide axially within the horizontal cylinder 3, thereby achieving a sliding extension and retraction function.

[0034] Example 2 differs from Example 1 in that, as Figure 1 and Figure 2 As shown, the sliding limiting structure includes circumferentially distributed grooves on the horizontal support rod 2 and sliders disposed inside the horizontal cylinder 3 and cooperating with the grooves. The grooves are arranged along the length of the horizontal support rod 2; two to four grooves can be provided, and they are circumferentially distributed on the outer wall of the horizontal support rod 2. The sliders on the horizontal cylinder 3 cooperate with the grooves one by one. The sliders also provide support for the horizontal support rod 2, preventing it from tilting during sliding and thus maintaining the stability of the horizontal lead screw 4; the horizontal support rod 2 maintains the stable support of the top support rod even after sliding; and the limiting effect of the sliders and grooves ensures that the top support rod always faces vertically upwards. An annular boss is provided on the outer circumference of the inner end of the horizontal support rod 2. After the horizontal support rod 2 slides to its limit position inside the horizontal cylinder 3, the boss abuts against the slider to prevent the horizontal support rod 2 from slipping out of the horizontal cylinder 3.

[0035] Example 3 differs from Example 2 in that, as Figure 1 and Figure 2 As shown, the inner end of each horizontal lead screw 4 and the upper end of the support column 10 are inserted into the cylindrical body 1. The rotation drive structure includes a driven bevel gear 5 fixedly connected to the inner end of each horizontal lead screw 4 and a driving bevel gear 6 fixedly connected to the upper end of the support column 10. The driving bevel gear 6 and the driven bevel gear 5 are meshed together. The support column 10 is rotatably connected to the cylindrical body 1 to drive the rotation of the horizontal lead screw 4.

[0036] Example 4 differs from Example 3 in that, as Figure 1 and Figure 2As shown, the lower end of the cylindrical body 1 is provided with a vertical cylindrical body 7, which is sleeved on the support column 10. The lower end of the cylindrical body 1 is closed by an end plate with an opening, and the vertical cylindrical body 7 is then fixedly connected within the opening of the end plate. The support column 10 is rotatably connected to the vertical cylindrical body 7 via bearings, allowing the support column 10 to rotate and drive the rotation of the active bevel gear 6, thereby driving the rotation of the horizontal lead screw 4 and thus driving the extension and retraction of the horizontal support rod 2. The bearings can be one-way thrust ball bearings to improve load-bearing capacity, and deep groove ball bearings are also provided on the shaft near the thrust ball bearings. In this embodiment, a deep groove ball bearing is provided on the inner side of each of the upper and lower ends of the vertical cylindrical body 7, and a one-way thrust ball bearing is provided near the lower end of the deep groove ball bearing, allowing the support column 10 to be rotatably connected to the vertical cylindrical body 7 via one one-way thrust ball bearing and two deep groove ball bearings.

[0037] Example 5 differs from Example 4 in that, as Figure 1 As shown, an anti-rotation locking element 8 is provided between the support column 10 and the vertical cylinder 7 to prevent the support column 10 from rotating when rotation is not required.

[0038] Specifically, such as Figure 2 As shown, the anti-rotation locking member 8 includes an end cap with a through hole, and a short internally threaded cylinder is provided on the end cap. The end cap is sleeved on the support column 10, and the end cap and the support column 10 are clearance-fitted to not hinder the rotation and sliding of the end cap. The short internally threaded cylinder is threadedly connected to the outer side of the lower end of the vertical cylinder 7, that is, the outer side of the lower end of the vertical cylinder 7 is provided with an external thread that matches the internally threaded cylinder. An annular platform 9 that can abut against the lower end of the vertical cylinder 7 is fixedly connected to the support column 10; and the annular platform 9 is located between the lower end face of the vertical cylinder 7 and the end cap. By rotating the anti-rotation locking member 8, under the action of the short internally threaded cylinder and the outer side of the lower end of the vertical cylinder 7, the end cap gradually abuts against the annular platform 9. Furthermore, the lower side of the annular platform 9 and the upper side of the end cap are provided as friction surfaces to increase the friction between the end cap and the annular platform 9, thereby better preventing the rotation of the support column 10.

[0039] Example 6 differs from Example 1 in that the lower end of the support column 10 is provided with an adjustable height support component.

[0040] Furthermore, such as Figure 1As shown, the adjustable height support assembly includes a long internally threaded cylinder 11 vertically connected to the lower end of the support column 10, a vertical stud 12 threadedly connected to the long internally threaded cylinder 11, and a support base 13 rotatably connected to the vertical stud 12. The support base 13 includes a base plate and a support cylinder 14 fixed to the base plate. A smooth rod is provided at the lower end of the vertical stud 12, and the smooth rod is rotatably connected inside the support cylinder 14. In use, the position of the horizontal support rod is first adjusted, and then the support column 10 is prevented from rotating by the anti-rotation locking member 8; in the later stage of formwork erection, by fixing the long internally threaded cylinder 11 or the support column 10 with one hand and rotating the vertical stud 12 with the other hand, under the action of the threaded connection between the vertical stud 12 and the long internally threaded cylinder 11, the long internally threaded cylinder 11 and the support column 10 drive the upper main support member to move upward, so that the top support rod presses against the template sealing the opening.

[0041] Furthermore, a rotating handle 13 is fixedly connected to the vertical stud 12 to facilitate its rotation. In one embodiment, the smooth rod at the lower end of the vertical stud 12 can be rotatably connected to the support cylinder 14 via a one-way thrust ball bearing and a deep groove ball bearing. The smooth rod at the lower end of the vertical stud 12 can also be rotatably connected to the support cylinder using other methods found in the prior art.

[0042] Example 7 differs from Example 1 in that, as Figure 1 As shown, the top support rod includes a main top support rod disposed on the upper end of the cylindrical body 1 of the main support member and an auxiliary top support rod disposed on the horizontal support rod 2. In a preferred embodiment, the auxiliary top support rod is a lead screw. A vertical threaded hole that mates with the lead screw is drilled in the horizontal support rod 2, and the lead screw is threaded into the threaded hole, making the support height of the auxiliary top support rod adjustable, thereby allowing for fine-tuning of the support height of the auxiliary top support rod when needed.

[0043] In another embodiment, the upper end of the auxiliary top support rod is provided with a rubber sleeve or a support pad; a 15-40mm bamboo plywood is provided on the rubber sleeve or support pad of the auxiliary top support rod and the main top support rod for tightening the template for sealing the opening.

[0044] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that any modifications to the technical solutions described in the foregoing embodiments, or equivalent substitutions of some or all of the technical features therein, within the spirit and principles of the present utility model, shall not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present utility model, and shall all be included within the protection scope of the present utility model.

Claims

1. A formwork device for sealing a floor opening, which is easy to disassemble, characterized in that: It includes a main support component, at least two horizontal support rods (2) that are horizontally inserted through the main support component and arranged at equal angles, and a vertical support column (10) that is vertically set and connected to the main support component. The horizontal support rods (2) are in sliding and telescopic cooperation with the main support component. The support column (10) is connected to the horizontal support rods (2) through a drive mechanism to drive the sliding and telescopic movement of the horizontal support rods (2). The main support component and the horizontal support rods (2) are both provided with top support rods for supporting the sealing template (15).

2. The easily removable formwork device for floor opening closure according to claim 1, characterized in that: The main support component includes a cylindrical body (1) and a horizontal cylindrical body (3) arranged at equal angles and connected to the cylindrical body (1); the upper end of the cylindrical body (1) is provided with the top support rod and the lower end is connected to the support column (10); the horizontal support rod (2) passes through the horizontal cylindrical body (3) and is slidably connected to the horizontal cylindrical body (3).

3. The easily removable formwork device for floor opening closure according to claim 2, characterized in that: The driving mechanism includes a horizontal lead screw (4) rotatably connected inside the horizontal cylinder (3) and a rotation drive structure for driving the horizontal lead screw (4) to rotate; the horizontal support rod (2) is provided with a long internal thread hole for threaded connection with the horizontal lead screw (4); a sliding limit structure is provided between the horizontal support rod (2) and the horizontal cylinder (3) to prevent the horizontal support rod (2) from rotating.

4. The easily removable formwork device for floor opening closure according to claim 3, characterized in that: The sliding limiting structure includes a circumferentially distributed groove on the horizontal support rod (2) and a slider disposed in the horizontal cylinder (3) and cooperating with the groove; the groove extends along the length direction of the horizontal support rod (2); the inner end of the horizontal support rod (2) is provided with a boss that can abut against the slider.

5. The demountable floor opening closure formwork assembly of claim 3 or 4, wherein: The inner end of the horizontal lead screw (4) and the upper end of the support column (10) are both inserted into the cylindrical body (1); the rotation drive structure includes a driven bevel gear (5) connected to the inner end of the horizontal lead screw (4) and a driving bevel gear (6) connected to the upper end of the support column (10), the driving bevel gear (6) meshing with the driven bevel gear (5); and the support column (10) is rotatably connected to the cylindrical body (1) to drive the rotation of the horizontal lead screw (4).

6. The demountable formwork assembly of any one of claims 2 to 4, wherein: The lower end of the cylindrical body (1) is provided with a vertical cylindrical body (7) sleeved outside the support column (10), and the support column (10) is rotatably connected to the vertical cylindrical body (7); a rotation-stopping locking member (8) is provided between the support column (10) and the vertical cylindrical body (7).

7. The formwork support device for sealing easily removable floor openings according to claim 6, characterized in that: The anti-rotation locking component (8) includes an end cap sleeved on the support column (10), a short internal threaded cylinder on the end cap, and the short internal threaded cylinder is threadedly connected to the outer side of the lower end of the vertical cylinder (7); the end cap is clearance-fitted with the support column (10); and a ring platform (9) that can abut against the lower end of the vertical cylinder (7) is fixedly connected to the support column (10); and the ring platform (9) is located between the vertical cylinder (7) and the end cap.

8. The easily removable formwork device for floor opening closure according to claim 7, characterized in that: The lower end of the support column (10) is provided with an adjustable height support component.

9. The easily removable formwork device for floor opening closure according to claim 8, characterized in that: The adjustable height support assembly includes a long internal threaded cylinder (11) vertically connected to the lower end of the support column (10), a vertical stud (12) threadedly connected to the long internal threaded cylinder (11), and a support seat rotatably connected to the vertical stud (12).

10. The easily removable formwork device for floor opening closure according to claim 9, characterized in that: A rotating handle (13) is fixedly connected to the vertical stud (12); a smooth rod is provided at the lower end of the vertical stud (12), and the support base includes a base plate and a support cylinder (14) set on the base plate, with the smooth rod rotatably connected inside the support cylinder (14).

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