Top plate early-dismantling fixing device of keel supporting structure for conveniently dismantling building formwork

Abstract

According to the top plate early-dismantling fixing device of the keel supporting structure for conveniently dismantling the building formwork, when the top plate early-dismantling fixing device is used, the supporting base can be connected to the stand column of the vertical supporting structure through the connecting piece, the formwork is jacked and positioned through the supporting base, and certain supporting acting force is provided for the formwork; and then the positioning bracket is locked at the preset position on the supporting seat through the locking structure, so that the positioning bracket can press and fix the keel of the transverse supporting structure on the template, and the keel can stably and uniformly support the template. When the transverse keel supporting structure for supporting the formwork needs to be dismounted in advance, the positioning support can slide to the bottom of the supporting seat only by releasing the locking effect of the locking structure on the positioning support, so that the positioning support releases the abutting effect on the keel, and the formwork can be conveniently dismounted. Therefore, the transverse keel supporting structure of the supporting formwork can be conveniently and quickly disassembled, the turnover efficiency of the transverse keel supporting structure is improved, and the construction cost can be reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of building construction, and in particular relates to a top plate early dismantling fixing device for a keel supporting structure used for conveniently dismantling a building template. Background Art

[0002] Roof support refers to a new type of roof support structure used in construction, also known as roof support formwork steel structure. This is a new type of quick-release roof support system. It overturns the traditional load-bearing model, where secondary keels are placed above and supported by the primary keels. Instead, it adopts a system where the primary keels are placed above and the secondary keels are hung on the primary keels via connectors, achieving rapid support and removal. This solves the problem of large spans hindering concrete demoulding time, saving time and accelerating turnover efficiency. It also achieves energy conservation, low carbon emissions, and increased efficiency, revolutionizing the building formwork system and achieving sustainable development in the construction industry. When the concrete reaches a certain strength but has not yet fully solidified, meeting the requirements for demoulding, the horizontal keel support structure that supports the formwork can usually be removed in advance without affecting the stability of the vertical column support structure. However, currently, it is generally difficult to quickly and easily remove the horizontal keel support structure that supports the formwork, making it difficult to improve the turnover efficiency of the horizontal keel support structure and significantly increasing construction costs. Utility Model Content

[0003] Based on the above-mentioned problems existing in the prior art, the purpose of the embodiments of the present utility model is to provide a top plate early dismantling fixing device for the keel support structure used for convenient dismantling of building formwork, so as to solve the problem in the prior art that it is difficult to conveniently and quickly dismantle the horizontal keel support structure that supports the formwork, and it is impossible to improve the turnover efficiency of the horizontal keel support structure.

[0004] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is to provide a top plate early dismantling fixing device for a keel support structure for conveniently dismantling a building formwork, comprising:

[0005] The support seat comprises a support seat body and a supporting portion for cooperating with and positioning the template, wherein the supporting portion is provided on the top of the support seat body;

[0006] A connecting piece, used for matching connection to the column of the vertical support structure, wherein the top end of the connecting piece is detachably connected to the bottom end of the support seat;

[0007] A positioning bracket, used for cooperating with the support and positioning of the keel of the transverse supporting structure, wherein the positioning bracket is slidably disposed on the support seat; and

[0008] A locking structure for locking the positioning bracket at a preset position on the support seat, wherein the preset position is a position where the positioning bracket can press and fix the keel on the template so that the keel supports the template;

[0009] When the locking structure locks the positioning bracket at a preset position on the support seat, the positioning bracket can press and fix the keel on the template so that the keel supports the template; when the locking structure releases the lock of the positioning bracket, the positioning bracket can be slid to the bottom of the support seat so that the positioning bracket releases the pressing effect on the keel.

[0010] Furthermore, the support seat is provided with a slide groove, and the positioning bracket is slidably set in the slide groove; or, the support seat is provided with a slide rail assembly, and the positioning bracket is slidably set on the support seat through the slide rail assembly.

[0011] Furthermore, the locking structure includes a first card slot provided on the support seat and a first clamping portion provided on the positioning bracket. When the first clamping portion is aligned with the first card slot to embed and clamp the first clamping portion in the first card slot, the locking structure locks the positioning bracket at a preset position on the support seat.

[0012] Furthermore, a slide groove is provided on the support seat, and the positioning bracket is slidably set in the slide groove. The first card slots are set as two, and the two first card slots are set on both sides of the slide groove. The upper part of the positioning bracket is correspondingly provided with two first holding parts.

[0013] Furthermore, the positions corresponding to the two first card slots on the positioning bracket are respectively provided with first avoidance grooves for avoiding the corresponding first card slots; moving the positioning bracket laterally can move each first holding portion out of the corresponding first card slot, until each first avoidance groove is aligned with the corresponding first card slot, and the positioning bracket can be moved downward along the slide groove to release the lock of the positioning bracket.

[0014] Furthermore, the lower part of the positioning bracket is also provided with two second clamping parts, the support seat is located on both sides of the slide groove and is respectively provided with second clamping grooves corresponding to the positions of the two second clamping parts, and the positions of the positioning bracket corresponding to the two second clamping grooves are respectively provided with second avoidance grooves for avoiding the corresponding second clamping grooves; when the first clamping part is aligned with the first clamping groove, the second clamping part is aligned with the second clamping groove, and the first clamping part is embedded and connected to the first clamping groove, so that the locking structure locks the positioning bracket at a preset position on the support seat; moving the positioning bracket laterally can make each first clamping part and each second clamping part move out of the corresponding first clamping groove and the corresponding first clamping groove respectively, until each first avoidance groove and each second avoidance groove are aligned with the corresponding first clamping groove and the corresponding second clamping groove, and the positioning bracket can be moved downward along the slide groove to release the lock of the positioning bracket.

[0015] Furthermore, the support seat is located on both sides of the slide groove and is respectively provided with a third clamping slot corresponding to the positions of the two second clamping parts. When the first clamping part is aligned with the second clamping slot, the second clamping part is aligned with the third clamping slot, and the first clamping part can be embedded and clamped in the second clamping slot, and the second clamping part can be embedded and clamped in the third clamping slot, so that the locking structure locks the positioning bracket to another preset position on the support seat; horizontal movement of the positioning bracket can make each first clamping part and each second clamping part move out of the corresponding second clamping slot and the corresponding third clamping slot respectively, until each first avoidance slot and each second avoidance slot are aligned with the corresponding second clamping slot and the corresponding third clamping slot, and the positioning bracket can be moved upward or downward along the slide groove to release the lock of the positioning bracket.

[0016] Furthermore, a supporting member with a plate-like structure is provided on the supporting portion.

[0017] Furthermore, the connecting member includes a screw and a locking threaded sleeve screwed onto the screw, the top end of the screw is detachably connected to the bottom of the support seat body, the bottom end of the screw is used to be threadedly connected to the internal threaded sleeve at the top end of the column, and the locking threaded sleeve abuts against the column.

[0018] Furthermore, the positioning bracket is provided with two slots for positioning the keel, and the two slots are symmetrically arranged on the positioning bracket.

[0019] Compared with the prior art, the one or more technical solutions in the embodiments of the present invention have at least one of the following beneficial effects:

[0020] The top plate early dismantling fixing device for the keel support structure for conveniently dismantling building formwork in the embodiment of the present invention can be used to connect the support seat to the column of the vertical support structure through a connecting piece when in use, and the support seat is used to support and position the formwork by the top holding portion of the support seat, providing a certain supporting force to the formwork, and then the positioning bracket is locked to a preset position on the support seat by a locking structure, so that the positioning bracket can press and fix the keel of the transverse support structure on the formwork, so that the keel plays a stable and uniform supporting role on the formwork. When it is necessary to dismantle the transverse keel support structure that supports the formwork in advance, it is only necessary to release the locking effect of the locking structure on the positioning bracket, and then the positioning bracket can be slid to the bottom of the support seat, so that the positioning bracket releases the pressing effect on the keel, thereby realizing the convenient and quick removal of the transverse keel support structure that supports the formwork, thereby improving the turnover efficiency of the transverse keel support structure and reducing construction costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments or descriptions of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0022] Figure 1 A schematic diagram of the three-dimensional structure of the top plate early removal fixing device for the keel support structure for conveniently dismantling building formwork provided by the utility model;

[0023] Figure 2 An exploded view of the top plate early removal fixing device for the keel support structure for conveniently dismantling building formwork provided by the utility model;

[0024] Figure 3 This is an exploded view of the support base and positioning bracket provided by the utility model;

[0025] Figure 4 An assembly diagram of the top plate early removal fixing device and the vertical support structure columns for the keel support structure for conveniently dismantling the building formwork provided by the utility model;

[0026] Figure 5 A schematic diagram of the three-dimensional structure of the keel supporting structure for the convenient dismantling of the building formwork provided by the present invention, wherein the top plate early dismantling fixing device supports the keel of the horizontal supporting structure;

[0027] Figure 6 A schematic diagram of the framework structure of the top plate early dismantling fixing device for the keel support structure for convenient dismantling of building formwork provided by the present invention in a usage scenario;

[0028] Figure 7 for Figure 6 The exploded view of the frame structure of the early dismantling fixture of the top plate of the keel supporting structure for convenient dismantling of building formwork is shown in the usage scenario.

[0029] Among them, the reference numerals in the figures are:

[0030] 1-support base; 11-support base body; 111-slide groove; 12-holding part;

[0031] 2-connector; 21-screw; 22-locking threaded sleeve;

[0032] 3-positioning bracket; 31-first avoidance groove; 32-second avoidance groove; 33-slot;

[0033] 4-locking structure; 41-first card slot; 42-first holding portion; 43-second holding portion; 44-second card slot; 45-third card slot;

[0034] 5-supporting member; 6-template;

[0035] 7- vertical support structure; 71- column;

[0036] 8- lateral support structure; 81- keel. DETAILED DESCRIPTION

[0037] In order to make the technical problems, technical solutions and beneficial effects to be solved by 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 used to explain the present invention and are not intended to limit the present invention.

[0038] It should be noted that when an element is referred to as being "connected to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed to indicate or imply relative importance or implicitly specify the number of the technical features indicated. Therefore, features specified as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of this utility model, "plurality" means two or more, unless otherwise specifically defined. In the description of this utility model, it should be noted that, unless otherwise specified or defined, the terms "mounted," "connected," and "connected" should be interpreted broadly. For example, they can mean fixed, removable, or integral; mechanical or electrical; direct or indirect through an intermediary; internal communication between two elements; or interaction between two elements. Those skilled in the art will understand the specific meanings of these terms in this utility model based on the specific circumstances.

[0039] Reference throughout this specification to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment of the present application. Thus, when the phrases "in one embodiment," "in some embodiments," or "in some embodiments" appear in various places throughout this specification, not all references are to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

[0040] Please also refer to Figures 1 to 7The top plate early dismantling fixing device for the support structure of the keel 81 for conveniently dismantling the building formwork 6 provided by the embodiment of the present invention will now be described. The top plate early dismantling fixing device for the support structure of the keel 81 for conveniently dismantling the building formwork 6 provided by the embodiment of the present invention comprises a support base 1, a connector 2, a positioning bracket 3 and a locking structure 4. The support base 1 comprises a support base body 11 and a supporting portion 12 for cooperating to support and position the formwork 6. The supporting portion 12 is provided at the top of the support base body 11. The connector 2 is used to be matched with the column 71 of the vertical support structure 7. The top end of the connector 2 is detachably connected to the bottom of the support base 1. The positioning bracket 3 is used to cooperate to support and position the keel 81 of the horizontal support structure 8. The positioning bracket 3 is slidably provided on the support base 1. The locking structure 4 is used to lock the positioning bracket 3 in a preset position on the support base 1. The preset position is a position where the positioning bracket 3 can press and fix the keel 81 on the formwork 6 so that the keel 81 supports the formwork 6. During use, after the support base 1 is connected to the column 71 of the vertical support structure 7 through the connector 2, the supporting portion 12 of the support base 1 can be used to support and position the formwork 6, providing a certain supporting force to the formwork 6. The positioning bracket 3 is then locked to a preset position on the support base 1 through the locking structure 4, so that the positioning bracket 3 can press and fix the keel 81 of the transverse support structure 8 on the formwork 6, thereby allowing the keel 81 to provide stable and uniform support for the formwork 6. When the concrete has a certain strength but has not yet fully solidified and reaches the conditions for demolding, since the support base 1 can provide sufficient supporting strength to the formwork 6 through the column 71 of the vertical support structure 7, the transverse keel support structure 8 that supports the formwork 6 can usually be removed in advance without affecting the stability of the support structure of the vertical column 71 on the formwork 6. At this time, if it is necessary to remove the transverse keel support structure 8 that supports the formwork 6 in advance, it is only necessary to release the locking effect of the locking structure 4 on the positioning bracket 3, and then the positioning bracket 3 can be slid to the bottom of the support seat 1, so that the positioning bracket 3 releases the pressure on the keel 81, so that the transverse keel support structure 8 that supports the formwork 6 can be removed quickly and conveniently, thereby improving the turnover efficiency of the transverse keel support structure 8 and reducing construction costs. It should be noted that when supporting the formwork 6, a plurality of top plate early disassembly fixing devices need to be used in conjunction, and each top plate early disassembly fixing device is respectively connected to the corresponding column 71 of the vertical support structure 7, and the two ends of the keel 81 of the transverse keel support structure 8 are respectively overlapped on the positioning bracket 3 of the two adjacent top plate early disassembly fixing devices.

[0041] The present invention provides a device for quickly dismantling the top plate of the keel 81 supporting structure for the construction formwork 6. Compared with the prior art, when in use, the support base 1 can be matched with the column 71 of the vertical support structure 7 through the connecting piece 2, and the supporting portion 12 of the support base 1 is used to support and position the formwork 6, providing a certain supporting force to the formwork 6. Then, the positioning bracket 3 is locked to a preset position on the support base 1 through the locking structure 4, so that the positioning bracket 3 can press and fix the keel 81 of the transverse support structure 8 on the formwork 6, so that the keel 81 can provide stable and uniform support for the formwork 6. When it is necessary to remove the transverse keel support structure 8 that supports the formwork 6 in advance, it is only necessary to release the locking effect of the locking structure 4 on the positioning bracket 3, and then the positioning bracket 3 can be slid to the bottom of the support base 1, so that the positioning bracket 3 releases the pressing effect on the keel 81, thereby making it possible to conveniently and quickly remove the transverse keel support structure 8 supporting the formwork 6, thereby improving the turnover efficiency of the transverse keel support structure 8 and reducing construction costs.

[0042] Please refer to Figure 1 、 Figure 2 and Figure 3 In some embodiments, a slide groove 111 is provided on the support base body 11 of the support base 1, and the positioning bracket 3 is slidably disposed in the slide groove 111, so that the positioning bracket 3 can slide up and down on the support base 1 along the slide groove 111, so that the positioning bracket 3 can move along a path between a locked position and an unlocked position. Of course, it is understandable that in other embodiments, a slide rail assembly can also be provided on the support base 1, and the positioning bracket 3 is slidably disposed on the support base 1 via the slide rail assembly, so that the positioning bracket 3 can slide up and down.

[0043] Please refer to Figure 1 、 Figure 2 and Figure 3 In some embodiments, the locking structure 4 includes a first latching slot 41 provided on the support base body 11 of the support base 1 and a first latching portion 42 provided on the positioning bracket 3. When the first latching portion 42 is aligned with the first latching slot 41 and the first latching portion 42 is inserted into the first latching slot 41, the locking structure 4 locks the positioning bracket 3 in a predetermined position on the support base 1. When an external force causes the first latching portion 42 to disengage from the first latching slot 41, the locking structure 4 releases the locking effect on the positioning bracket 3, allowing the positioning bracket 3 to slide up and down on the support base body 11.

[0044] Please refer to Figure 1 、 Figure 2 and Figure 3In some embodiments, a slide groove 111 is provided on the support seat 1, and the positioning bracket 3 is slidably set in the slide groove 111. Two first card grooves 41 are set, and the two first card grooves 41 are provided on both sides of the slide groove 111. Two first clamping parts 42 are correspondingly provided on the upper part of the positioning bracket 3 to enhance the stability of the locking structure 4 locking the positioning bracket 3.

[0045] Please refer to Figure 1 、 Figure 2 and Figure 3 In some embodiments, first avoidance grooves 31 are provided on the positioning bracket 3 at positions corresponding to the two first engaging slots 41, respectively, for avoiding the corresponding first engaging slots 41. Under the action of an external force, the positioning bracket 3 can be laterally moved to cause each first retaining portion 42 to move out of the corresponding first engaging slot 41. When each first avoidance groove 31 is aligned with the corresponding first engaging slot 41, the positioning bracket 3 can be moved downward along the slide groove 111 to release the lock of the positioning bracket 3. In addition, when the first avoidance groove 31 is misaligned with the corresponding first engaging slot 41, the positioning bracket 3 cannot be moved downward along the slide groove 111, thereby further enhancing the stability of the locking structure 4 in locking the positioning bracket 3.

[0046] Please refer to Figure 1 、 Figure 2 and Figure 3 In some embodiments, the lower portion of the positioning bracket 3 is further provided with two second clamping portions 43, the support base 1 is located on both sides of the slide groove 111 and is respectively provided with second clamping grooves 44 corresponding to the positions of the two second clamping portions 43, and the positions of the positioning bracket 3 corresponding to the two second clamping grooves 44 are respectively provided with second avoidance grooves 32 for avoiding the corresponding second clamping grooves 44; when the first clamping portion 42 is aligned with the first clamping groove 41, the second clamping portion 43 is aligned with the second clamping groove 44, and the first clamping portion 42 can be embedded and connected to the first clamping groove 4 1, and the second holding portion 43 is embedded in the second holding slot 44, so that the locking structure 4 locks the positioning bracket 3 in the preset position on the support base 1; the lateral movement of the positioning bracket 3 can cause each first holding portion 42 and each second holding portion 43 to move out of the corresponding first holding slot 41 and the corresponding first holding slot 41, respectively, until each first avoidance slot 31 and each second avoidance slot 32 are aligned with the corresponding first holding slot 41 and the corresponding second holding slot 44, and then the positioning bracket 3 can be moved downward along the slide groove 111 to release the lock of the positioning bracket 3. In addition, when each first avoidance slot 31 and each second avoidance slot 32 are aligned with the corresponding first holding slot 41 and the corresponding second holding slot 44, the positioning bracket 3 cannot be moved downward along the slide groove 111, thereby further enhancing the stability of the locking structure 4 in locking the positioning bracket 3.

[0047] Please refer to Figure 1 、 Figure 2 and Figure 3In some other embodiments, the support base 1 is located on both sides of the slide groove 111 and is respectively provided with third clamping grooves 45 corresponding to the positions of the two second clamping portions 43. When the first clamping portion 42 is aligned with the second clamping groove 44, the second clamping portion 43 is aligned with the third clamping groove 45, and the first clamping portion 42 can be embedded and clamped in the second clamping groove 44, and the second clamping portion 43 can be embedded and clamped in the third clamping groove 45, so that the locking structure 4 locks the positioning bracket 3 at another preset position on the support base 1. Under the action of external force, the horizontal movement of the positioning bracket 3 can make each first clamping portion 42 and each second clamping portion 43 move out of the corresponding second clamping groove 44 and the corresponding third clamping groove 45 respectively, until each first avoidance groove 31 and each second avoidance groove 32 are aligned with the corresponding second clamping groove 44 and the corresponding third clamping groove 45, and the positioning bracket 3 can be moved upward or downward along the slide groove 111 to release the lock of the positioning bracket 3. Furthermore, when the first avoidance grooves 31 and the second avoidance grooves 32 are aligned with the corresponding second retaining grooves 44 and the corresponding third retaining grooves 45, the positioning bracket 3 cannot be moved upward or downward along the slide groove 111, thereby further enhancing the stability of the locking structure 4 in locking the positioning bracket 3. Furthermore, the support base 1 is provided with third retaining grooves 45 on both sides of the slide groove 111 and corresponding to the positions of the two second retaining portions 43. When the first retaining portion 42 is engaged and engaged in the second retaining grooves 44, and the second retaining portion 43 is engaged and engaged in the third retaining grooves 45, the distance between the positioning bracket 3 and the top plate can be adjusted to support and position the thicker keel 81, thereby improving the versatility of the top plate early removal fixing device.

[0048] Please refer to Figure 1 、 Figure 2 and Figure 3 In some other embodiments, a supporting member 5 with a plate-like structure is provided on the supporting portion 12 to increase the contact area between the support base 1 and the top plate.

[0049] Please refer to Figure 1 、 Figure 4 and Figure 7 In some other embodiments, the connecting member 2 includes a screw 21 and a locking threaded sleeve 22 screwed onto the screw 21. The top end of the screw 21 is detachably connected to the bottom of the support seat body 11. The bottom end of the screw 21 is used to be threadedly connected to the internal threaded sleeve at the top end of the column 71 of the transverse support structure 7, and the locking threaded sleeve 22 abuts against the column 71.

[0050] Please refer to Figure 1 、 Figure 5 and Figure 6In some other embodiments, two slots 33 for positioning the keels 81 are provided on the positioning bracket 3. The two slots 33 are symmetrically arranged on the positioning bracket 3. The two keels 81 are respectively positioned in the two slots 33 on the positioning bracket 3. This not only allows one positioning bracket 3 to position two keels 81 at the same time, but also improves the balance of force on both sides of the positioning bracket 3.

[0051] It should be noted that, in some embodiments, the support base 1, the positioning bracket 3 and the connecting member 2 are all made of hard metal materials such as steel or stainless steel. In other embodiments, the locking structure 4 may also include a latch, a first locking hole and a second locking hole, and the first locking hole and the second locking hole are respectively correspondingly arranged on the positioning bracket 3 and the support base 1, and the positioning bracket 3 can be locked to the support base 1 by simply inserting the latch into the first locking hole and the second locking hole in sequence. In other embodiments, the locking structure 4 may also include a locking screw, a first threaded hole and a second threaded hole, and the first threaded hole and the second threaded hole are respectively correspondingly arranged on the positioning bracket 3 and the support base 1, and the positioning bracket 3 can be locked to the support base 1 by simply screwing the locking screw into the first locking hole and the second locking hole in sequence.

[0052] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A device for quickly dismantling a top plate of a keel support structure for a building formwork, characterized in that: include: The support seat comprises a support seat body and a supporting portion for cooperating with and positioning the template, wherein the supporting portion is provided on the top of the support seat body; A connecting piece, used for matching connection to the column of the vertical support structure, wherein the top end of the connecting piece is detachably connected to the bottom end of the support seat; A positioning bracket, used for cooperating with the support and positioning of the keel of the transverse supporting structure, wherein the positioning bracket is slidably arranged on the support seat; as well as A locking structure for locking the positioning bracket at a preset position on the support seat, wherein the preset position is a position where the positioning bracket can press and fix the keel on the template so that the keel supports the template; Wherein, when the locking structure locks the positioning bracket at a preset position on the support seat, the positioning bracket can press the keel against and fix it on the template so that the keel supports the template; When the locking structure releases the locking of the positioning bracket, the positioning bracket can be slid to the bottom of the support seat, so that the positioning bracket releases the pressing effect on the keel.

2. The top plate early dismantling fixing device for the keel support structure for convenient dismantling of building formwork according to claim 1, characterized in that: The support seat is provided with a slide groove, and the positioning bracket is slidably arranged in the slide groove; or, the support seat is provided with a slide rail assembly, and the positioning bracket is slidably arranged on the support seat through the slide rail assembly.

3. The top plate early dismantling fixing device for the keel support structure for convenient dismantling of building formwork according to claim 1, characterized in that: The locking structure includes a first card slot provided on the support seat and a first clamping portion provided on the positioning bracket. When the first clamping portion is aligned with the first card slot to embed and clamp the first clamping portion in the first card slot, the locking structure locks the positioning bracket at a preset position on the support seat.

4. The top plate early dismantling fixing device for the keel support structure for convenient dismantling of building formwork according to claim 3, characterized in that: The support seat is provided with a slide groove, the positioning bracket is slidably set in the slide groove, the first clamping groove is set to two, the two first clamping grooves are set on both sides of the slide groove, and the upper part of the positioning bracket is correspondingly provided with two first clamping parts.

5. The top plate early dismantling fixing device for the keel support structure for convenient dismantling of building formwork according to claim 4, characterized in that: The positions corresponding to the two first card slots on the positioning bracket are respectively provided with first avoidance grooves for avoiding the corresponding first card slots; the horizontal movement of the positioning bracket can make each first holding portion move out of the corresponding first card slot until each first avoidance groove is aligned with the corresponding first card slot, and the positioning bracket can be moved downward along the sliding groove to release the lock of the positioning bracket.

6. The top plate early dismantling fixing device for the keel support structure for convenient dismantling of building formwork according to claim 5, characterized in that: The lower part of the positioning bracket is also provided with two second clamping parts, and the support seat is located on both sides of the slide groove and is respectively provided with second clamping grooves corresponding to the positions of the two second clamping parts, and the positions of the positioning bracket corresponding to the two second clamping grooves are respectively provided with second avoidance grooves for avoiding the corresponding second clamping grooves; when the first clamping part is aligned with the first clamping groove, the second clamping part is aligned with the second clamping groove, and the first clamping part is embedded and connected to the first clamping groove, so that the locking structure locks the positioning bracket at a preset position on the support seat; moving the positioning bracket laterally can make each first clamping part and each second clamping part move out of the corresponding first clamping groove and the corresponding first clamping groove respectively, until each first avoidance groove and each second avoidance groove are aligned with the corresponding first clamping groove and the corresponding second clamping groove, and the positioning bracket can be moved downward along the slide groove to release the lock of the positioning bracket.

7. The top plate early dismantling fixing device for the keel support structure for convenient dismantling of building formwork according to claim 6, characterized in that: The support seat is located on both sides of the slide groove and is respectively provided with a third clamping slot corresponding to the positions of the two second clamping parts. When the first clamping part is aligned with the second clamping slot, the second clamping part is aligned with the third clamping slot, and the first clamping part can be embedded and clamped in the second clamping slot, and the second clamping part can be embedded and clamped in the third clamping slot, so that the locking structure locks the positioning bracket to another preset position on the support seat; horizontal movement of the positioning bracket can make each first clamping part and each second clamping part move out of the corresponding second clamping slot and the corresponding third clamping slot respectively, until each first avoidance slot and each second avoidance slot are aligned with the corresponding second clamping slot and the corresponding third clamping slot, and the positioning bracket can be moved upward or downward along the slide groove to release the lock of the positioning bracket.

8. The top plate early dismantling fixing device for the keel support structure for convenient dismantling of building formwork according to claim 1, characterized in that: A supporting member with a plate-like structure is provided on the supporting portion.

9. The top plate early dismantling fixing device for the keel support structure for convenient dismantling of building formwork according to any one of claims 1 to 8, characterized in that: The connecting part includes a screw and a locking threaded sleeve screwed on the screw. The top end of the screw is detachably connected to the bottom of the support seat body. The bottom end of the screw is used to be threadedly connected to the internal threaded sleeve at the top end of the column, and the locking threaded sleeve abuts against the column.

10. The top plate early dismantling fixing device for the keel support structure for convenient dismantling of building formwork according to any one of claims 1 to 8, characterized in that: The positioning bracket is provided with two slots for positioning the keel, and the two slots are symmetrically arranged on the positioning bracket.

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