Supporting formwork structure for post-cast strip safety construction and construction method thereof

Abstract

The application relates to a post-pouring belt construction technology field, in particular to a supporting formwork structure for safe post-pouring belt construction, which comprises a stand, a cross-shaped sliding block, a supporting piece and a supporting formwork; a screw rod transmission structure is arranged in the stand, the cross-shaped sliding block is slidably connected to the stand, and the cross-shaped sliding block is driven to move up and down by the screw rod transmission structure; one supporting piece is detachably connected to each side of the cross-shaped sliding block; the supporting formwork is connected to the cross-shaped sliding block; a through hole matched with the stand is formed in the middle of the supporting formwork; after the cross-shaped sliding block moves to the lower side of the stand, the supporting formwork is assembled, the supporting formwork is driven to move up by the cross-shaped sliding block after assembly, the upper surface of the stand is flush with the upper surface of the supporting formwork, and a pouring supporting surface is formed. The application realizes integrated operation of ground assembly, automatic film paving, automatic demolding and convenient transportation, and solves the problems of difficult positioning and high risk of the existing device.

Description

Technical Field

[0001] This invention relates to the field of post-pouring strip construction technology, and in particular to a support formwork structure and construction method for safe construction of post-pouring strips. Background Technology

[0002] In existing technologies, post-cast strip formwork support typically employs a full-span steel pipe jacking method, requiring the erection of numerous steel pipe uprights and horizontal bars on the working surface. This results in a large workload for installation and dismantling, occupies significant space, and is time-consuming and labor-intensive. To address this, patent CN214195538U proposes a post-cast strip formwork support device for cast-in-place concrete slabs. This device replaces the traditional steel pipe frame with a single column combined with a lifting and clamping structure, reducing the amount of steel pipe used to some extent. However, during assembly, the bottom formwork structure and the lifting mechanism still require alignment and fixation at a high position. Workers must be positioned below the post-cast strip or climb to operate, which not only presents positioning difficulties but also poses risks associated with working at height, and the ease of construction still needs improvement. Summary of the Invention

[0003] To overcome the shortcomings mentioned in the background art, this invention provides: a support template structure for safe construction of post-pouring strips, comprising a column, a cross-shaped slider, support members, and a support template; a screw drive structure is provided in the column, and the cross-shaped slider is slidably connected to the column, driving the cross-shaped slider to move up and down through the screw drive structure; a support member is detachably connected to each side of the cross-shaped slider; a support template is connected to the cross-shaped slider; a through hole adapted to the column is opened in the middle of the support template; after the cross-shaped slider moves to the lower side of the column, the support template is assembled, and after assembly, the support template is moved upward through the cross-shaped slider, so that the upper surface of the column is flush with the upper surface of the support template, forming a pouring support surface.

[0004] In one embodiment, the support includes a fixing member and a disassembly member; the fixing member and the disassembly member are interlocked; the fixing member is fixedly connected to the cross-shaped slider, and the fixing member has a through hole adapted to the column; the disassembly member is in contact with the support member.

[0005] In one embodiment, the system further includes a hollow column and an electric push rod; the lower side of the column slides within the hollow column; an electric push rod is installed on the lower side inside the hollow column; the hollow column moves up and down by extending and retracting the telescopic part of the electric push rod.

[0006] In one embodiment, the lead screw drive structure includes a lead screw that rotates in the column and a motor installed on the lower side inside the column; the lead screw is screwed to a cross-shaped slider; the motor drives the lead screw to rotate, and the lead screw drives the cross-shaped slider to move up and down.

[0007] In one embodiment, a base plate is provided on the underside of the hollow column.

[0008] In one embodiment, the system also includes a plastic film and an aerial membrane laying assembly; when the cross-shaped slider moves the support template upward so that the upper surface of the column is flush with the upper surface of the support template to form a casting support surface, the aerial membrane laying assembly is controlled to lay the plastic film on the casting support surface.

[0009] In one embodiment, the high-altitude membrane laying assembly includes a rope take-up device, a U-shaped component, and a pull rope; the U-shaped component is fixed to one side of the support member, and a plastic film is placed in the U-shaped component; the rope take-up device is installed on the other side of the support member, and the rope take-up device unwinds the pull rope; the end of the pull rope is passed over the upper side of the disassembly member and connected to the plastic film.

[0010] In one embodiment, the end of the pull cord is clamped to a plastic film by a clip.

[0011] In one embodiment, the plastic film is placed in a rolled-up state in the U-shaped member; the gap between the side of the U-shaped member from which the plastic film is released and the supporting template is greater than the thickness of one plastic film but less than the thickness of two plastic films.

[0012] A safe construction method for post-pouring strips includes the following steps: Step 1: Install hollow columns and uprights onto the plane below the post-pouring strip; Step 2: On the ground, assemble the support template by interlocking and pre-place the plastic film; Step 3: Move the support template upwards using a cross-shaped slider to form a pouring support surface; Step 4: Lay the plastic film on the pouring support surface using an aerial membrane laying assembly; Step 5: Move the entire pouring support surface upwards using an electric push rod, pressing it under the post-pouring strip.

[0013] The advantages of this invention are: it achieves integrated operation of ground assembly, automatic membrane laying, automatic demolding, and convenient transportation, solving the problems of difficult positioning and high risk associated with existing devices. The invention uses a screw-driven cross-shaped slider to raise and lower the supporting template, combined with an electric push rod to adjust the overall height, realizing ground assembly and mechanized lifting of the pouring support surface. This avoids the risks of traditional high-altitude installation or climbing operations, reducing labor intensity. By designing the support components as a plug-in structure of fixed and detachable parts, it not only facilitates transportation and storage but also simplifies the on-site assembly process. The integrated high-altitude membrane laying component can automatically lay the plastic film after the pouring support surface is formed, effectively isolating the concrete from the template. This ensures automatic separation of the template and cement blocks during demolding and extends the template's service life. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the cross-shaped slider of the present invention moving downwards;

[0015] Figure 2 This is a schematic diagram of the cross-shaped slider of the present invention moving upward;

[0016] Figure 3 This is a cross-sectional view of the hollow column in this invention;

[0017] Figure 4 for Figure 1 A bottom view of part of the structure;

[0018] Figure 5 for Figure 2 A bottom view of part of the structure.

[0019] The markings in the attached diagram are: 1-hollow column, 2-upright column, 3-electric push rod, 4-cross-shaped slider, 5-support component, 6-support template, 7-plastic film, 8-rope retractor, 9-U-shaped component, 10-pull rope, 1a-base plate, 6a-fixing component, 6b-disassembly component. Detailed Implementation

[0020] The technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] In existing technologies, post-cast strip formwork support typically employs a full-span steel pipe jacking method, requiring the erection of numerous steel pipe uprights and horizontal bars on the working surface. This results in a large workload for installation and dismantling, occupies significant space, and is time-consuming and labor-intensive. To address this, patent CN214195538U proposes a post-cast strip formwork support device for cast-in-place concrete slabs. This device replaces the traditional steel pipe frame with a single column combined with a lifting and clamping structure, reducing the amount of steel pipe used to some extent. However, during assembly, the bottom formwork structure and the lifting mechanism still require alignment and fixation at a high position. Workers must be positioned below the post-cast strip or climb to operate, which not only presents positioning difficulties but also poses risks associated with working at height, and the ease of construction still needs improvement.

[0022] In response to this, the present invention is proposed.

[0023] Example 1: As Figures 1-5 As shown, the present invention provides: a support template structure for safe construction of post-pouring strips, including a column 2, a cross-shaped slider 4, a support member 5, and a support template 6; a screw drive structure is provided in the column 2, and the cross-shaped slider 4 is slidably connected to the column 2, which drives the cross-shaped slider 4 to move up and down; a support member 5 is detachably connected to each side of the cross-shaped slider 4; the support template 6 is connected to the cross-shaped slider 4; a through hole adapted to the column 2 is opened in the middle of the support template 6; after the cross-shaped slider 4 moves to the lower side of the column 2, the support template 6 is assembled, and after assembly, the support template 6 is moved upward by the cross-shaped slider 4, so that the upper surface of the column 2 is flush with the upper surface of the support template 6, forming a pouring support surface.

[0024] The support component 5 includes a fixing component 6a and a disassembly component 6b; the fixing component 6a and the disassembly component 6b are interlocked; the fixing component 6a is fixedly connected to the cross-shaped slider 4, and the fixing component 6a has a through hole adapted to the column 2; the disassembly component 6b is in contact with the support component 5; thus, by disassembling the support component 5 into the fixing component 6a and the disassembly component 6b, the present invention can separate the fixing component 6a and the disassembly component 6b during transportation, reducing the volume occupied, and during assembly, only the fixing component 6a and the disassembly component 6b need to be interlocked together.

[0025] It also includes a hollow column 1 and an electric push rod 3; the lower side of the column 2 slides in the hollow column 1; the electric push rod 3 is installed on the lower side of the hollow column 1; the hollow column 1 moves up and down by extending and retracting the telescopic part of the electric push rod 3.

[0026] The lead screw drive structure includes a lead screw that rotates in the column 2 and a motor installed on the lower side of the column 2; the lead screw is screwed to the cross-shaped slider 4; the motor drives the lead screw to rotate, and the lead screw drives the cross-shaped slider 4 to move up and down.

[0027] A base plate 1a is provided on the lower side of the hollow column 1 to enhance the placement stability of the hollow column 1.

[0028] Example 2: Based on Example 1, as follows Figures 1-5 As shown, it also includes a plastic film 7 and an aerial membrane laying assembly; when the cross-shaped slider 4 moves the support template 6 upward, so that the upper surface of the column 2 is flush with the upper surface of the support template 6 to form a casting support surface, the aerial membrane laying assembly is controlled to lay the plastic film 7 on the casting support surface.

[0029] The high-altitude membrane laying assembly includes a rope retractor 8, a U-shaped component 9, and a pull rope 10; the U-shaped component 9 is fixed to one side of the support 5, and a plastic film 7 is placed in the U-shaped component 9; the rope retractor 8 is installed on the other side of the support 5, and the pull rope 10 is unwound from the rope retractor 8; the end of the pull rope 10 is passed over the upper side of the disassembly component 6b and connected to the plastic film 7.

[0030] The end of the pull rope 10 is clamped and connected to the plastic film 7 by a clip. When demolding, if the plastic film 7 has a high bonding strength with the cement block of the post-cast strip and is not easy to separate, the clip will automatically separate from the plastic film 7 under the pulling force.

[0031] The plastic film 7 is placed in the U-shaped part 9 in a rolled-up state; the gap between the side of the U-shaped part 9 from which the plastic film 7 is released and the supporting template 6 is greater than the thickness of one plastic film 7 but less than the thickness of two plastic films 7, so that the rolled-up plastic film 7 can be gradually pulled out and flattened by the pull rope 10.

[0032] A safe construction method for post-pouring strips includes the following steps:

[0033] Step 1: Install hollow column 1 and column 2 onto the plane below the post-cast strip;

[0034] Step 2: On the ground, assemble the support template 6 by inserting it in, and pre-place the plastic film 7.

[0035] Step 3: Move the support template 6 upwards using the cross-shaped slider 4 to form the pouring support surface;

[0036] Step 4: Lay the plastic film 7 onto the casting support surface using the high-altitude membrane laying assembly;

[0037] Step 5: Move the entire pouring support surface upwards using the electric push rod 3, pressing it under the post-pouring strip.

[0038] Based on the above problems and structure, the working principle of this invention is as follows:

[0039] Initially, the telescopic part of the electric push rod 3 retracts, making the vertical height of the hollow column 1 and the column 2 less than the height of the post-cast strip to the lower plane. Then, the hollow column 1 and the column 2 are erected from a horizontal position and placed on the lower plane of the post-cast strip. The presence of the base plate 1a can enhance the placement stability of the hollow column 1. Then, the cross-shaped slider 4 moves to the lower side of the column 2 through the screw drive structure. Then, the worker can directly insert the fixing part 6a and the disassembly part 6b together on the ground.

[0040] After the support template 6 is assembled, the worker moves to the side and controls the screw drive structure to move the support template 6 (fixed part 6a and disassembly part 6b) upward through the cross-shaped slider 4 and support 5, so that the upper surface of the column 2 is flush with the upper surface of the support template 6, forming a pouring support surface; at this time, because the telescopic part of the electric push rod 3 retracts, there is still a certain distance between the pouring support surface and the post-pouring strip. At this time, the telescopic part of the electric push rod 3 is pushed out, which drives the pouring support surface to move upward to contact the post-pouring strip and provide a certain pressure to prevent grout leakage when pouring cement;

[0041] Furthermore, considering that the formwork needs to be removed after pouring the support surface, in order to facilitate the removal process and improve the service life of the support formwork 6, such as Figure 1 , Figure 4 As shown, after the worker has assembled the support template 6, the worker can place the rolled-up plastic film 7 in the U-shaped part 9 and pull the plastic film 7 out a certain distance. At the same time, the worker pulls out the rope 10 of the rope retractor 8 and passes it over the top of the disassembly part 6b, and uses the clamp at the end of the rope 10 to hold the end of the plastic film 7; then, as... Figure 2As shown, when the cross-shaped slider 4 moves the support template 6 upward, making the upper surface of the column 2 flush with the upper surface of the support template 6 to form a casting support surface, the electric push rod 3 retracts, so there is still a certain distance between the casting support surface and the post-cast strip, providing space for the plastic film 7 to be laid. At this time, the rope take-up device 8 can be controlled to retract the pull rope 10, and then the pull rope 10 drives the rolled plastic film 7 to gradually unfold and lay flat on the casting support surface. In this way, the present invention can lay the plastic film 7 flat on the casting support surface, which facilitates the subsequent demolding work and improves the service life of the support template 6.

[0042] Afterwards, when the post-pouring strip construction is completed and demolding is required, first control the cross-shaped slider 4 to drive the support template 6 to move downwards. Since the upper end of the column 2 is in contact with the poured cement block, when the cross-shaped slider 4 drives the support template 6 to move downwards, the support template 6 and the cement block will be automatically demolded. Then control the telescopic part of the electric push rod 3 to retract, so that the column 2 moves downwards as a whole, and the demolding work of the column 2 and the cement block is completed. In addition, the present invention lays a plastic film 7 on the pouring support surface before pouring cement, which can make the demolding work smoother.

[0043] Subsequently, when the present invention needs to be transported, the disassembly part 6b of the support template 6 is removed, and the two support parts 5 are removed. In this way, the volume of the present invention during transportation can be greatly reduced, making it easier to transport.

[0044] In summary, this invention achieves integrated operation of ground assembly, automatic membrane laying, automatic demolding, and convenient transportation, solving the problems of difficult positioning and high risk associated with existing devices. The cross-shaped slider 4 driven by the screw drive of this invention raises and lowers the supporting template 6, and combined with the electric push rod 3 to adjust the overall height, it realizes ground assembly and mechanized lifting of the pouring support surface, avoiding the risks of traditional high-altitude installation or climbing operations, and reducing labor intensity. By designing the support component 5 as a plug-in structure of fixed component 6a and disassembly component 6b, it not only facilitates transportation and storage but also simplifies the on-site assembly process. The integrated high-altitude membrane laying component can automatically complete the laying of the plastic film 7 after the pouring support surface is formed, effectively isolating the concrete from the template, ensuring automatic separation of the template and cement block during demolding, and extending the service life of the template.

[0045] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural or procedural transformations made based on the content of the present invention specification, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present invention.

Claims

1. A support formwork structure for safe construction of post-pouring strips, characterized in that: It includes a column (2), a cross-shaped slider (4), a support member (5), and a support template (6); the column (2) is equipped with a screw drive structure, and the cross-shaped slider (4) is slidably connected to the column (2). The cross-shaped slider (4) is driven to move up and down through the screw drive structure; a support member (5) is detachably connected to each side of the cross-shaped slider (4); the support template (6) is connected to the cross-shaped slider (4); the support template (6) has a through hole in the middle that matches the column (2); after the cross-shaped slider (4) moves to the lower side of the column (2), the support template (6) is assembled. After assembly, the support template (6) is driven to move up through the cross-shaped slider (4) so ​​that the upper surface of the column (2) is flush with the upper surface of the support template (6) to form a casting support surface.

2. The support formwork structure for safe construction of post-pouring strips according to claim 1, characterized in that: The support member (5) includes a fixing member (6a) and a disassembly member (6b); the fixing member (6a) and the disassembly member (6b) are inserted into each other; the fixing member (6a) is fixedly connected to the cross-shaped slider (4), and the fixing member (6a) has a through hole adapted to the column (2); the disassembly member (6b) is in contact with the support member (5).

3. The support formwork structure for safe construction of post-pouring strips according to claim 2, characterized in that: It also includes a hollow column (1) and an electric push rod (3); the lower side of the column (2) slides in the hollow column (1); an electric push rod (3) is installed on the lower side of the hollow column (1); the hollow column (1) moves up and down by extending and retracting the telescopic part of the electric push rod (3).

4. The support formwork structure for safe construction of post-pouring strips according to claim 1, characterized in that: The screw drive structure includes a screw that rotates in the column (2) and a motor installed on the lower side of the column (2); the screw is screwed to the cross-shaped slider (4); the screw is driven to rotate by the motor, and the screw drives the cross-shaped slider (4) to move up and down.

5. The support formwork structure for safe construction of post-pouring strips according to claim 1, characterized in that: A base plate (1a) is provided on the lower side of the hollow column (1).

6. The support formwork structure for safe construction of post-pouring strips according to claim 3, characterized in that: It also includes a plastic film (7) and an aerial membrane laying assembly; when the cross-shaped slider (4) moves the support template (6) upward, so that the upper surface of the column (2) is flush with the upper surface of the support template (6) to form a casting support surface, the aerial membrane laying assembly is controlled to lay the plastic film (7) on the casting support surface.

7. The support formwork structure for safe construction of post-pouring strips according to claim 6, characterized in that: The high-altitude membrane laying assembly includes a rope retractor (8), a U-shaped component (9), and a pull rope (10); a U-shaped component (9) is fixed to one side of the support (5), and a plastic film (7) is placed in the U-shaped component (9); a rope retractor (8) is installed on the other side of the support (5), and the rope retractor (8) unwinds the pull rope (10); the end of the pull rope (10) is passed over the upper side of the disassembly component (6b) and connected to the plastic film (7).

8. The support formwork structure for safe construction of post-pouring strips according to claim 7, characterized in that: The end of the pull rope (10) is clamped to the plastic film (7) by a clip.

9. A support formwork structure for safe construction of post-pouring strips according to claim 8, characterized in that: The plastic film (7) is placed in the U-shaped part (9) in a rolled-up state; The gap between the side of the U-shaped part (9) from which the plastic film (7) is released and the supporting template (6) is greater than the thickness of one plastic film (7) but less than the thickness of two plastic films (7).

10. A safe construction method for post-pouring strips, characterized in that: Using the support formwork structure for safe construction of post-pouring strips as described in claim 9 includes the following steps: Step 1: Install the hollow column (1) and the column (2) onto the plane below the post-cast strip; Step 2: On the ground, insert and assemble the support template (6), and pre-place the plastic film (7); Step 3: Move the support template (6) upward by using the cross-shaped slider (4) to form the pouring support surface; Step 4: Lay the plastic film (7) on the casting support surface using the high-altitude membrane laying assembly; Step 5: Move the entire pouring support surface upwards using the electric push rod (3) and press it under the post-pouring strip.

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