Multi-layer coaxial continuous formwork device

Abstract

The utility model discloses a kind of multilayer coaxial continuous formwork devices, including change bracket, disc and bottom support assembly;Annular interval is equipped with the fixed hole for being connected with side support rod fixedly in disc rim, the disc center bottom is equipped with positioning rod;Bottom support assembly includes top support and support pipe, and the top support bottom is equipped with protruding screw rod.By setting positioning rod, connecting circular tube, center cylinder, protruding screw rod, support pipe center coaxial arrangement, and the support rod of the support of this layer can be set on connecting circular tube on the last layer, load above circular tube can be accurately and accurately transferred to below support steel pipe, form safe and effective continuous multilayer coaxial support, and simultaneously pouring;When dismantling, change bracket is left in concrete floor, and support steel pipe, bottom disc and main and secondary keel, wood formwork formwork material are directly dismantled, without longer reinforcing steel head, reinforcing steel end part and other dangerous pieces, improve safety.

Description

Technical Field

[0001] This utility model relates to the field of construction technology, and in particular to a multi-layer coaxial continuous formwork support device. Background Technology

[0002] In continuous formwork construction, there is a problem of handling the replacement of supports when the formwork passes through the floor slab support section. Existing simple continuous formwork structures such as "aircraft supports" and aerated concrete blocks have the following problems:

[0003] 1. It has low strength and poor stability, and cannot accurately form continuous support with the support below.

[0004] 2. After demolition, long steel bar ends and other dangerous parts will remain, which may easily cause injury to passers-by and pose a safety hazard.

[0005] 3. It is impossible to achieve multi-layer continuous formwork and simultaneous pouring, which affects construction efficiency.

[0006] These problems mainly stem from the unreasonable design of the simplified support structure, which fails to effectively transfer loads and lacks safety considerations. Furthermore, the inability to achieve multi-layer continuous formwork leads to low construction efficiency, low material utilization, and potential waste. Utility Model Content

[0007] The purpose of this utility model is to provide a multi-layer coaxial continuous formwork support device to solve one or more technical problems existing in the prior art, and at least provide a beneficial option or create conditions.

[0008] The technical solution adopted to solve the above-mentioned technical problems is as follows:

[0009] This utility model provides a multi-layer coaxial continuous formwork support device, including a changing bracket, a disc, and a bottom support assembly. The changing bracket includes a central cylinder, at least three side support rods, and a connecting pipe. The top of the central cylinder is provided with a connecting plate, and the connecting pipe is located on top of the connecting plate. At least three connecting rods are evenly distributed around the bottom of the central cylinder, and the connecting rods extend radially along the central cylinder. The two ends of the side support rods are respectively connected to the connecting plate and the connecting rod. The disc has fixing holes spaced annularly along its edge for connecting and fixing to the side support rods, and a positioning rod is provided at the bottom center of the disc. The bottom support assembly includes a top support and a support tube. The bottom of the top support is provided with an extending screw, and the top of the extending screw is provided with a positioning groove for inserting the positioning rod. The extending screw is threadedly connected to an adjustable knob. The support tube is connected to the connecting pipe or the extending screw. The connecting pipe, the central cylinder, the extending screw, and the support tube are coaxially arranged.

[0010] The beneficial effects of this utility model are:

[0011] By setting positioning rods, connecting round pipes, central cylinders, extending screws, and support pipes are coaxially arranged, and the support rods of the upper layer of this support can be sleeved on the connecting round pipes. The load above the round pipes can be accurately transferred to the support steel pipes below, forming a safe and effective continuous multi-layer coaxial support, which is poured simultaneously. The replacement bracket is set to improve the strength of the support structure. During dismantling, the replacement bracket is left in the concrete floor slab, and the support steel pipes, bottom discs, main and secondary keels, and wooden formwork materials are directly removed without leaving long steel bar ends or other dangerous parts, thus improving safety.

[0012] As a further improvement to the above technical solution, the connecting rod is provided with a positioning screw hole, and the positioning screw hole and the fixing hole are connected by a positioning screw.

[0013] As a further improvement to the above technical solution, the cross-sectional area of ​​the central cylinder is set to be equivalent to that of the support tube.

[0014] As a further improvement to the above technical solution, the top support is provided with a central hole through which the positioning rod passes.

[0015] As a further improvement to the above technical solution, the formwork support device also includes a main keel, a secondary keel, and a template. The end of the main keel is engaged in the top support, the end of the secondary keel is located between the disc and the main keel, and the template is located between the disc and at least three connecting rods.

[0016] As a further improvement to the above technical solution, there are two main keels, and the positioning rod passes between the two main keels.

[0017] As a further improvement to the above technical solution, the main keel is a connecting round pipe, and the secondary keel has a square cross-section.

[0018] As a further improvement to the above technical solution, the main keel is a steel pipe and the secondary keel is a timber.

[0019] As a further improvement to the above technical solution, there are two secondary keels, and the positioning rod passes between the two secondary keels.

[0020] As a further improvement to the above technical solution, the connecting plate is circular. Attached Figure Description

[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments;

[0022] Figure 1 This is a schematic diagram of the installation structure of an embodiment of a multi-layer coaxial continuous formwork support device provided by this utility model.

[0023] Figure 2This is a schematic diagram of an embodiment of a multi-layer coaxial continuous formwork support device provided by this utility model;

[0024] Figure 3 This is a schematic diagram of the structure of a bracket replacement device in one embodiment of a multi-layer coaxial continuous formwork support device provided by this utility model.

[0025] Figure label:

[0026] Replacement bracket 100, central cylinder 110, side support rod 120, connecting round tube 130, connecting plate 140, connecting rod 150, positioning screw hole 151, positioning screw 160;

[0027] 200 disc, 210 positioning rod, 220 fixing hole;

[0028] Bottom support component 300, top support 310, support tube 320, extension screw 330, adjustable knob 340, main keel 400, secondary keel 500, template 600. Detailed Implementation

[0029] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0030] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0031] In the description of this utility model, if there are words such as "several", they mean one or more, "multiple" means two or more, "greater than", "less than", "exceeding" etc. are understood to exclude the number itself, and "above", "below", "within" etc. are understood to include the number itself.

[0032] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0033] like Figure 1As shown, typical formwork includes a support frame, adjustable screws, adjusting bolts, secondary joists (500mm), main joists (400mm), and formwork (600mm). The support system is generally made of steel pipes such as disc-lock joists; the main joists (400mm) are typically double steel pipes; the secondary joists (500mm) are typically made of square timber; and the formwork (600mm) is typically made of wooden formwork. (Refer to...) Figures 1 to 3 This utility model provides a multi-layer coaxial continuous formwork support device, and the following embodiments are provided:

[0034] A multi-layer coaxial continuous formwork support device includes a bracket 100, a disc 200, and a bottom support assembly 300, which can realize multi-layer continuous formwork support and simultaneous casting.

[0035] Reference Figure 1 The bracket 100 includes a central cylinder 110, three side support rods 120, and a connecting circular tube 130. The central cylinder 110 is generally a solid round steel. The central cylinder 110 has the same cross-sectional area as the support tube 320 of the bottom support assembly 300. Having the same cross-section allows for equivalent load transfer, ensuring structural safety. Furthermore, compared to hollow circular tubes, solid round steel reduces the impact on the quality of the concrete slab, and the strength of steel is superior to concrete, thus enhancing structural strength.

[0036] A connecting plate 140 is provided at the top of the central cylinder 110. The connecting plate 140 is circular, but it can also be square or other shapes. The connecting plate 140 bears tensile force and can further fix the side support rod 120. A connecting circular tube 130 is provided at the top of the connecting plate 140. The connecting circular tube 130 on the upper part of the bracket 100 can be inserted into the ordinary support tube 320, which plays a role in preventing slippage and shearing for the steel pipe that continues to support the upper part. During the multi-layer continuous formwork process, when the upper structure generates horizontal force, this circular steel ring can effectively resist these forces and ensure the stability of the entire support system.

[0037] Three connecting rods 150 are evenly distributed around the bottom of the central cylinder 110. The connecting rods 150 extend radially along the central cylinder 110. The two ends of the side support rods 120 are connected to the connecting plate 140 and the connecting rods 150, respectively. One end of the connecting rod 150 has a positioning screw hole 151. The positioning screw 160 with an end can pass through the positioning screw hole 151 and through the fixing holes 220 of the lower wooden template 600 and the disc 200 for fixed connection. This design not only increases the stability of the entire structure but also facilitates installation and positioning. For example, in actual construction, workers can quickly and accurately install the positioning screw 160 through these pre-drilled positioning screw holes 151, ensuring that the centers of all components are coaxial. The lateral rods play a stabilizing role, resisting the eccentric moment transmitted from the upper part of the central round steel. Furthermore, the lateral rods can be designed with small-diameter round steel, reducing material usage while ensuring stability. The number of side support rods 120 can be set according to the actual situation.

[0038] The disc 200 has fixing holes 220 spaced around its edge for connection and fixation with the side support rod 120, and a positioning rod 210 is located at the bottom center of the disc 200. The disc 200 not only effectively transmits and distributes loads but also ensures precise positioning of each component. For example, during construction, workers can quickly and accurately position the lower screw rod using the small-diameter round steel at the center of the disc 200, ensuring the entire support system is coaxial. When the upper structure experiences eccentric loads, these lateral small-diameter round steels provide additional support, preventing the entire support system from tilting or deforming.

[0039] The bottom support assembly 300 includes a top support 310 and a support tube 320. The bottom of the top support 310 has an extending screw 330, and the top of the extending screw 330 has a positioning groove for inserting a positioning rod 210. The extending screw 330 is threadedly connected to an adjustable knob 340. Rotating the adjustable knob 340 raises and lowers the tube, adjusting the length of the extension into the support tube 320, thereby adjusting the height of the entire bottom support to accommodate the height of the support layer. The upper end of the support tube 320 is connected to the extending screw 330, and the connecting round tube 130, central cylinder 110, extending screw 330, and support tube 320 are coaxially arranged. The adjustable knob 340 can be a nut, as shown in the figure, with a hand-tightening part on the side for easy hand tightening. In some other embodiments, two nuts can be provided to reduce loosening.

[0040] The positioning screw 160 with an end can pass through the positioning screw hole 151 and through the lower wooden template 600 and disc 200 to serve a positioning function. The disc 200 has a smaller diameter positioning rod 210 at its center. The round steel is inserted into the central positioning groove at the top of the screw through the hole of the lower top support 310 to further position the lower screw, so as to keep the connecting round tube 130, the central cylinder 110, the protruding screw 330 and the support tube 320 coaxially arranged. The support tube 320 of the upper support device is sleeved on the connecting round tube 130. In this way, the load above can be accurately transferred to the lower support steel tube, forming a safe and effective continuous multi-layer support.

[0041] This application sets up a positioning rod 210, which is coaxially connected to the circular pipe 130, the central cylinder 110, the extending screw 330, and the support pipe 320. The support rod of the upper layer of this layer can be sleeved on the connecting circular pipe 130. The load above the circular pipe can be accurately transferred to the supporting steel pipe below, forming a safe and effective continuous multi-layer coaxial support, and the concrete is poured at the same time. The replacement bracket 100 is set up to improve the strength of the support structure. During dismantling, the replacement bracket 100 is left in the concrete floor slab. The supporting steel pipe, the bottom disc 200, the main and secondary keels 500, and the wooden formwork 600 are directly removed without leaving long steel bar ends or other dangerous parts, thus improving safety.

[0042] In a further improvement, the top support 310 is provided with a central hole through which the positioning rod 210 passes, so that the positioning rod 210 can pass through the top support 310 and be inserted into the positioning groove at the top of the protruding screw 330.

[0043] Further improvements include a formwork support device comprising a main keel 400, secondary keels 500, and a template 600. The end of the main keel 400 is engaged within the top support 310. The end of the secondary keel 500 is located between the disc 200 and the main keel 400. The secondary keels 500 are vertically aligned. The template 600 is located between the disc 200 and three connecting rods 150. There are two main keels 400, with a positioning rod 210 passing between them. There are also two secondary keels 500, with a positioning rod 210 passing between them. The main keel 400 is a connecting round pipe 130, and the secondary keel 500 has a square cross-section. The main keel 400 is made of steel pipe, and the secondary keel 500 is made of timber. When placing the main keel 400 and the secondary keel 500, a certain gap needs to be reserved between the two main keels 400 to facilitate the passage of the positioning rod 210. At the same time, a certain gap also needs to be reserved when placing the two secondary keels 500 to facilitate the passage of the positioning rod 210.

[0044] This utility model also provides an embodiment of a multi-layer coaxial continuous formwork support method, applicable to any of the above-mentioned formwork support devices, comprising the following steps:

[0045] Place the bottom support component 300;

[0046] Place two main keels 400 on the top support 310;

[0047] Two secondary keels 500 are placed directly above the top support 310, in a different direction from the main keel 400;

[0048] A disc 200 is placed above the wooden keel on both sides. The positioning rod 210 below the disc 200 device passes through the secondary keel 500, the main keel 400 and the top support 310 in sequence and is inserted into the positioning groove of the protruding screw 330.

[0049] Install wooden template 600 above disc 200;

[0050] Install a support bracket on the wooden template 600, and fix the positioning screw 160 by passing through the connecting rod 150 of the support bracket 100, the template 600 and the disc 200 in sequence;

[0051] Tie the floor slab reinforcement bars onto the 600mm wooden formwork;

[0052] Connect 130 sets of round pipes to the top of the bracket 100 and support steel pipes above. The upper support frame continues to complete the formwork process of the upper structure in the conventional way.

[0053] Once all the preparation work for the pouring layers is completed, the concrete pouring will proceed as a whole.

[0054] Remove the supporting steel pipes, bottom disc 200, main keel 400, secondary keel 500, and wooden formwork 600, and replace bracket 100 in the concrete floor slab.

[0055] The following are specific embodiments of the method.

[0056] 1. Set up the bottom support assembly 300 according to the formwork verification results, and place two main keels 400, which are generally steel pipes, on the top support 310. When placing the support components, place multiple bottom support assemblies 300 evenly at the same time, and adjust the adjustable knob 340 to the same position as the protruding screw 330 according to the floor height to be supported. Then, insert or thread the lower end of the protruding screw 330 into the support pipe 320. The adjustable knob 340 abuts against the upper end face of the support pipe 320. The support height can be adjusted by rotating the adjustable knob 340.

[0057] 2. Place two secondary keels 500 directly above the top support 310, in a different direction from the steel pipe, with a certain gap in between to allow the small-diameter round steel of the bottom disc 200 to pass through.

[0058] 3. Place the disc 200 above the wooden keel. Align the positioning rod 210 below the disc 200 with the pre-drilled center hole on the top support 310, and insert the screw through the center hole to prevent it from moving left or right. The disc 200 is then naturally placed above the secondary keel 500.

[0059] 4. Install the wooden template 600 above the disc 200, and drill holes in the wooden template 600 below the disc 200, aligning it with the pre-drilled hole position of the disc 200.

[0060] 5. Install the replacement bracket on the wooden formwork 600, and install the positioning screw 160. The positioning screw 160 passes through the positioning screw hole 151 of the connecting rod 150 of the replacement bracket 100, the hole drilled in the wooden formwork 600, and the fixing hole 220 of the bottom disc 200. All parts are coaxial. Set three positioning screws 160 to achieve coaxiality of the upper support pipe 320, the central cylinder 110 of the replacement bracket 100, and the lower support steel pipe.

[0061] 6. Tie the floor slab reinforcement on the formwork 600. At the position of the replacement bracket 100, the reinforcement in this part needs to be densified to ensure that the reinforcement spacing meets the design requirements.

[0062] 7. Connect the outer sleeve of the round tube 130 to the top of the bracket 100 and support the steel pipe above it. Continue to complete the formwork process of the upper structure using the conventional method.

[0063] 8. Once all preparations for the pouring layers are complete, the entire structure is poured with concrete. This method allows for the simultaneous pouring of multiple layers without waiting for each layer to solidify individually. For example, in the construction of a multi-story building, formwork and pouring can be performed on multiple floors simultaneously, rather than layer by layer, which greatly improves construction efficiency and saves time.

[0064] 9. Finally, remove the supporting steel pipes, bottom disc 200, main and secondary keels 500, formwork 600 and other formwork materials, and replace the bracket 100 in the concrete floor slab.

[0065] 10. Remove and grind off any protruding bolt heads under the floor slab, then finish with mortar. This method ensures safety and aesthetics after demolding. For example, by removing and grinding off protruding bolt heads, potential hazards that could cause injury are eliminated, while finishing with mortar improves the surface smoothness and appearance, preparing the surface for subsequent finishing work.

[0066] The preferred embodiments of the present invention have been described in detail above. However, the present invention is not limited to the embodiments. Those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present invention. All such equivalent modifications or substitutions are included within the scope defined by the claims of this application.

Claims

1. A multi-layered coaxial continuous formwork device, characterized by, The application relates to a multi-layer coaxial continuous formwork device. The device comprises a support frame, a disc and a bottom support assembly.

2. The multi-layer coaxial continuous formwork device according to claim 1, wherein the connecting rods are provided with positioning screw holes which are connected with the fixing holes through positioning screws. The cross-sectional area of the central column is equivalent to that of the support pipe. The top support is provided with a central hole through which the positioning rod passes.

5. The multi-layer coaxial continuous formwork device according to claim 1, wherein the formwork device further comprises a main keel, a secondary keel and a formwork plate.

3. The multi-layer coaxial continuous form template device of claim 1 wherein: The number of the main keels is two, and the positioning rod passes through the two main keels.

4. The multi-layer coaxial continuous form template device of claim 1 wherein: The main keel is a connecting pipe, and the secondary keel is square in cross section. The main keel is a steel pipe, and the secondary keel is a wooden square. The number of the secondary keels is two, and the positioning rod passes through the two secondary keels.

6. A multi-layered coaxial continuous form die support apparatus as defined in claim 5 wherein: The connecting plate is circular.

7. A multi-layered coaxial continuous form die support apparatus as defined in claim 6 wherein: ​ 8. A multi-layered coaxial continuous form die support apparatus as defined in claim 6 wherein: ​ 9. A multi-layered coaxial continuous form die support apparatus as defined in claim 6 wherein: ​ 10. The multi-layer coaxial continuous form template device of claim 1 wherein: ​

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