A foldable aluminum formwork for concrete pouring

Abstract

A foldable aluminum formwork for concrete pouring relates to the field of aluminum formwork, including a motherboard and a sub-plate hinged on opposite sides of the motherboard, the sub-plate can be folded on the back of the motherboard, and is flush with the front of the motherboard after unfolding; the backs of the motherboard and the sub-plate are both provided with a frame and a sink formed by the frame, and a support bar is also slidably provided in the sink of the motherboard, and the support bar can pass through the motherboard frame and the sub-plate frame to support the sub-plate to maintain the unfolded state. The present invention realizes the folding and unfolding and fixing of the aluminum formwork through a simple structure, which not only improves the work efficiency during use, but also facilitates the storage and transportation of the aluminum formwork; at the same time, the support bar of the aluminum formwork also has a demoulding function, and is used in conjunction with the demoulding component to improve the efficiency of the demoulding work.

Description

Technical Field

[0001] The invention relates to the field of aluminum formwork, in particular to a foldable aluminum formwork for concrete pouring. Background Art

[0002] During the construction of reinforced concrete building structures, the formwork support system can ensure the quality and safety of concrete projects, speed up construction progress and reduce project costs. Previous formwork support systems generally used wooden formworks, steel formworks, etc. The use of wooden formwork boards is not strong and is easy to damage, not fireproof, easy to change, easy to rot, and not environmentally friendly; steel formworks are easy to corrode, and the steel formworks are heavy, which is not conducive to handling and assembly; therefore, most of the current formwork support systems use corrosion-resistant, light-weight and high-load-bearing aluminum formworks. However, most of the aluminum formworks in the prior art are integrated, and the integrated aluminum formworks are large in size and very inconvenient to transport. In addition, they also need to be supported and installed as a whole during installation, which is time-consuming, labor-intensive, and relatively dangerous.

[0003] In order to reduce the volume of aluminum formwork and facilitate transportation, the following settings are mainly used in the prior art:

[0004] Reference 1: Chinese invention patent with publication number CN 109853939 A

[0005] Disclosed are an articulated aluminum formwork for buildings and a supporting device thereof, comprising a left aluminum formwork and a right aluminum formwork, wherein the left aluminum formwork and the right aluminum formwork each comprise a first aluminum film plate, a second aluminum formwork and a third aluminum formwork, a rotating shaft is connected between the first aluminum film plate and the second aluminum formwork, a rotating shaft is also connected between the second aluminum formwork and the third aluminum formwork, a pair of first aluminum film plates are connected with a supporting column, a pair of second aluminum formworks are also connected with a supporting column, a pair of third aluminum formworks are also connected with a supporting column, a pair of second half-open grooves are chiseled on the second aluminum formwork, a connecting piece is provided at the second half-open groove, a rotating hole is chiseled on the connecting piece and the inner bottom end of the second half-open groove, a rotating shaft is connected in the rotating hole.

[0006] Reference 2: Chinese invention patent with announcement number CN213597482U

[0007] Disclosed is an aluminum alloy template with a folding and storing structure, comprising a template body, a plurality of first through holes are evenly spaced on both sides of the template body, a positioning plate is fixedly provided at the middle position of one side of the inner wall of the template body, through grooves are provided at both ends of one side of the template body, and sliders are slidably provided in the two through grooves. The present invention provides an aluminum alloy template with a folding and storing structure, and by pulling the top plate, two L-shaped positioning frames fixed at the bottom end of the top plate are moved up and down, one side of the two L-shaped positioning frames is slidably connected to the through grooves provided at both ends of one side of the template body through the slider, and the required installation materials are conveniently stored through the storage box at the bottom, so that the aluminum alloy template is convenient to telescope and fold.

[0008] In summary, although the volume of the aluminum formwork in the prior art has been reduced, the installation and splicing methods are still relatively complicated, and during pouring construction, the aluminum formwork needs to be in contact with the concrete wall. After the wall solidifies, the aluminum formwork will adhere to the wall and is difficult to demold. Summary of the invention

[0009] The invention aims to provide a foldable aluminum formwork for concrete pouring, so as to reduce the volume of the aluminum formwork and simplify the installation and splicing method of the aluminum formwork.

[0010] In order to solve the above technical problems, the specific solution adopted by the present invention is: a foldable aluminum formwork for concrete pouring, including a motherboard and a sub-plate hinged on opposite sides of the motherboard, the sub-plate can be folded on the back of the motherboard, and is flush with the front of the motherboard after unfolding; the backs of the motherboard and the sub-plate are both provided with a frame and a sink groove surrounded by the frame, and a support bar is also slidably provided in the sink groove of the motherboard, and the support bar can pass through the motherboard frame and the sub-plate frame to support the sub-plate to maintain the unfolded state.

[0011] A guide cylinder is arranged on the back of the motherboard, a guide groove is opened on the guide cylinder along its length direction, an opening for the support bar to enter and exit is arranged on the end surface of the guide cylinder close to the daughterboard, and the control handle on the support bar extends from the guide groove.

[0012] As a further optimization of the above technical solution, a positioning groove perpendicular to the guide groove is provided at one end of the guide groove close to the sub-plate, and the positioning groove is communicated with the guide groove.

[0013] As a further optimization of the above technical solution, a demolding assembly is arranged on the sub-board, and the demolding assembly includes a mounting block and a movable demolding mechanism. The mounting block is provided with a through hole for inserting the support bar and a demolding hole vertically connected to the through hole. The movable demolding mechanism is arranged in the demolding hole and can extend from the opening on the front side of the sub-board along the demolding hole under the extrusion of the support bar.

[0014] As a further optimization of the above technical solution, the movable demoulding mechanism includes a demoulding column and a reset spring sleeved on the demoulding column. The inner end face of the demoulding column is a spherical surface. One end of the reset spring is connected to the demoulding column, and the other end is fixed to the inner wall of the demoulding hole.

[0015] As a further optimization of the above technical solution, a stripping plate is provided at the outer end of the stripping column, and the size of the stripping plate is consistent with the opening on the front side of the sub-plate.

[0016] As a further optimization of the above technical solution, the end of the support bar is provided with a guide surface for extruding the spherical surface of the demoulding column.

[0017] As a further optimization of the above technical solution, the guiding surface is an inclined surface or an arc-shaped surface.

[0018] As a further optimization of the above technical solution, a receiving groove capable of accommodating the spherical surface of the demoulding column is provided on the support bar near the guide surface.

[0019] As a further optimization of the above technical solution, it also includes a positioning connection structure for fixing the folded sub-board, and the positioning connection structure includes two parts with convex and concave matching, which are respectively arranged on the back side of the motherboard and the back side of the sub-board.

[0020] Compared with the prior art, the beneficial effects of the present invention are as follows: the present invention realizes the folding, unfolding and fixing of the aluminum template through a simple structure, which not only improves the work efficiency during use, but also facilitates the storage and transportation of the aluminum template; at the same time, the support bar of the aluminum template also has a demoulding function, and is used in conjunction with the demoulding component to improve the efficiency of the demoulding work. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the structure of the neutron plate after it is unfolded;

[0022] Figure 2 It is a schematic diagram of the structure in which the support bar is received in the guide groove in the present invention;

[0023] Figure 3 It is a schematic diagram of the structure after the sub-board is folded;

[0024] Figure 4 is a cross-sectional schematic diagram when the support bar is not inserted into the through hole;

[0025] Figure 5 A schematic cross-sectional view of the support bar after it is inserted into the through hole and the demoulding column is squeezed out from the front side of the sub-board;

[0026] Figure 6 A cross-sectional schematic diagram showing the support bar inserted into the through hole and the demoulding column inserted into the receiving groove;

[0027] Figure numerals: 1. daughter board, 2. mother board, 3. mounting block, 4. support bar, 5. hinge, 6. control handle, 7. positioning groove, 8. guide cylinder, 9. guide groove, 10. return spring, 11. demoulding column, 12. demoulding plate, 13. demoulding hole, 14. through hole, 15. receiving groove. DETAILED DESCRIPTION

[0028] The technical solution of the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. The parts not described and disclosed in detail in the following embodiments of the present invention should be understood as the prior art known or should be known to those skilled in the art.

[0029] Embodiment 1:

[0030] like Figures 1 to 3 As shown, the present invention is a foldable aluminum formwork for concrete pouring, comprising a motherboard 2 and a sub-board 1 hinged on opposite sides of the motherboard 2. The motherboard 2 has a rectangular shape, a flat plate surface on the front side, and a sink groove surrounded by a frame on the back side, so that the motherboard 2 has a certain thickness, and the setting of the frame can enhance the strength of the front panel surface to avoid deformation during the pouring of concrete; the sub-board 1 and the motherboard 2 have similar structures, and the width and thickness of the sub-board 1 are the same as those of the motherboard 2. The difference between the sub-board 1 and the motherboard 2 in size is that the length of the sub-board 1 is less than half the length of the motherboard 2. The two sub-boards 1 are hinged on both sides of the length direction of the motherboard 2 through hinges 5, two hinges 5 are set on each side, and the hinges 5 are installed on the wide side of the frame. The sub-board 1 can be folded on the back side of the motherboard 2 through the hinges 5. After the two sub-boards 1 are folded, a certain width of spacing is left, which is used to unfold the sub-board 1 through this position when in use. After the sub-board 1 is unfolded, the front side of the sub-board 1 is flush with the front side of the motherboard 2.

[0031] A guide cylinder 8 is also provided in the sink groove on the back of the motherboard 2. The cross section of the guide cylinder 8 is rectangular or circular. The connection between the guide cylinder 8 and the motherboard 2 can be welding, riveting, etc. There are two guide cylinders 8 parallel to each other. Both guide cylinders 8 are arranged along the length direction of the motherboard 2. A sliding hole is provided at each end of the guide cylinder 8. A through hole corresponding to the sliding hole is provided on the wide side of the frame on the back of the motherboard 2. A through hole is also provided on the frame of the sub-board 1 connected to the frame of the motherboard 2 on the sub-board 1. After the sub-board 1 is unfolded, the through hole on the frame of the sub-board 1, the through hole on the frame of the motherboard 2 and the sliding hole on the end face of the guide cylinder 8 are on the same straight line.

[0032] Two support bars 4 are slidably arranged in each guide cylinder 8. The support bars 4 are cylindrical long bars. When the sub-board 1 is fully expanded, the two support bars 4 slide toward the two sub-boards 1 respectively. After the support bars 4 slide out of the guide cylinder 8, they pass through the through holes on the motherboard 2 and the sub-board 1 and extend into the sink groove of the sub-board 1 for a certain length, so as to play the role of supporting the sub-board 1 in the expanded state, and connect the front sides of the motherboard 2 and the two sub-boards 1 into a plane.

[0033] In order to facilitate the control of the movement of the support bar 4, a guide groove 9 corresponding to the support bar 4 is opened on the guide cylinder 8 along its length direction. A control handle 6 perpendicular to its length direction is connected to the support bar 4, and the control handle 6 extends from the guide groove 9. Pulling the control handle 6 can realize the back and forth sliding of the support bar 4.

[0034] In order to achieve the position locking of the support bar 4, a positioning groove 7 perpendicular to the guide groove 9 is provided at one end of the guide groove 9 close to the sub-board 1, and the positioning groove 7 is connected to the guide groove 9. After the sub-board 1 is unfolded and the support bar 4 is supported on the back of the sub-board 1, the control handle 6 on the support bar 4 is rotated to make the control handle 6 fit into the positioning groove 7 to prevent the control handle 6 from retreating, thereby maintaining the support of the support bar 4 to the sub-board 1, so that the sub-board 1 remains in the unfolded state and can withstand the pressure during pouring.

[0035] In addition, a positioning groove 7 can also be provided at the end of the guide groove 9 opposite to the sub-board 1. After the support bar 4 is retracted into the guide tube 8, the control handle 6 is inserted into the positioning groove 7 opposite to the end of the sub-board 1. This can prevent the support bar 4 from slipping out of the opening of the frame of the motherboard 2 due to shaking after or during folding, affecting the folding work and even causing damage to the support bar 4.

[0036] It can be understood that the number of guide tubes 8 can be appropriately reduced or increased according to the width of the motherboard 2. For example, when the width of the motherboard 2 is small, one guide tube 8 can be set in the center; when the width of the motherboard 2 is large, three or more guide tubes 8 can be set and evenly spaced.

[0037] In addition, the guide cylinder 8 in the sink can also be set to a split type, that is, a support bar 4 is correspondingly set in each guide cylinder 8, and the setting position of the split guide cylinder 8 only needs to ensure that the support bar 4 can pass through the corresponding frame and extend out to support the sub-board 1. The specific setting method is the same as the setting method of this embodiment and will not be repeated here.

[0038] In this embodiment, the guide tube 8 is arranged in the sink, which can ensure that the sub-board 1 can fit with the frame of the motherboard 2 after being folded, so as to facilitate the storage and arrangement of the template and the subsequent storage and transportation.

[0039] In order to prevent the sub-board 1 from automatically unfolding during the transportation and handling of the template, a positioning connection structure (not shown in the figure) is also set between the motherboard 2 and the sub-board 1. The positioning connection structure includes two parts with convex and concave matching, which are respectively set on the back of the motherboard 2 and the back of the sub-board 1. Specifically, a ball socket is set on the frame on the back of the motherboard 2, and a ball head used in conjunction with the ball socket is set on the frame on the back of the sub-board 1. When folding, the sub-board 1 is pressed hard so that the ball head on the sub-board 1 is stuck in the ball socket, and the sub-board 1 can be fixed. When the sub-board 1 needs to be unfolded, the sub-board 1 can be pulled hard.

[0040] Embodiment 2:

[0041] During pouring construction, the aluminum formwork needs to be in contact with the concrete wall. After the wall solidifies, the aluminum formwork will be attached to the wall and difficult to demould. In order to solve this technical problem, based on Example 1, this embodiment further provides a demoulding component on the sub-panel 1.

[0042] Continue as Figure 1 , Figure 2 As shown, the demoulding assembly includes a mounting block 3 and a movable demoulding mechanism. The mounting block 3 is fixed in the sink groove on the back of the sub-board 1. Specifically, an L-shaped mounting piece (not shown in the figure) is arranged on the periphery of the mounting block 3. The mounting piece is connected to the mounting block 3 and the back of the sub-board 1. The mounting piece and the mounting block 3 and the back of the sub-board 1 are connected by welding or bolts. The mounting block 3 and the through hole on the sub-board 1 are kept at a certain distance, and the through hole 14 arranged on the mounting block 3 is aligned with the through hole on the sub-board 1, so that the support bar 4 can be inserted into the through hole 14 of the mounting block 3 after passing through the through hole.

[0043] like Figure 4 , Figure 5 As shown, a demoulding hole 13 vertically connected to the through hole 14 is also provided in the mounting block 3. The movable demoulding mechanism is arranged in the demoulding hole 13 and can extend from the opening (not shown in the figure) on the front side of the sub-board 1 along the demoulding hole 13 under the extrusion of the support bar 4.

[0044] The movable demoulding mechanism includes a demoulding column 11 and a reset spring 10 sleeved on the demoulding column 11. The inner end surface of the demoulding column 11 is a spherical surface smaller than a hemisphere. The length of the demoulding column 11 is greater than the depth of the demoulding hole 13, so that when the demoulding column 11 is in the initial position, the spherical surface of the inner end is located in the through hole 14. An annular groove for accommodating the reset spring 10 is provided on the inner wall of the demoulding hole 13. One end of the reset spring 10 is connected to the demoulding column 11, and the other end is fixed to the annular groove on the inner wall of the demoulding hole 13. In this embodiment, the upper end of the reset spring 10 is fixed to the demoulding column 11, and the lower end is fixed to the annular positioning surface at the bottom of the annular groove.

[0045] A stripping plate 12 is provided at the outer end of the stripping column 11. The size of the stripping plate 12 matches the opening on the front of the sub-plate 1 and is larger than the diameter of the stripping hole 13. When the stripping column 11 is in the initial position, Figure 4 As shown, under the action of the return spring 10, the stripping plate 12 is pressed against the bottom surface of the mounting block 3 and is kept flush with the front surface of the sub-plate 1. When the spherical surface at the inner end of the stripping column 11 is squeezed by the support bar 4, as shown in FIG. Figure 5 As shown, the spherical surface gradually retracts into the demoulding hole 13 , and at the same time, the demoulding plate 12 leaves the mounting block 3 and protrudes from the front side of the daughter board 1 .

[0046] In order to better extrude the demoulding column 11, a guide surface for extruding the spherical surface of the demoulding column 11 is provided at the end of the support bar 4. The guide surface is an inclined surface or an arc surface. In this embodiment, the guide surface is set as an arc surface. When demoulding is required, pull the support bar 4 corresponding to a terminal board 1 to slide toward the mounting block 3 and insert it into the through hole 14 of the mounting block 3. When the guide surface of the support bar 4 contacts the spherical surface of the demoulding column 11, the guide surface extrude the demoulding column 11, and the pressure acts on the concrete wall through the demoulding plate 12. As the support bar 4 slides further, the pressure of the demoulding plate 12 on the wall is further increased, and finally the sub-board 1 corresponding to the support bar 4 is lifted to a certain height together with the motherboard 2, so that the aluminum template is quickly removed from the concrete wall; if demoulding is still not successful at this time, the sub-board 1 on the other side can be separated from the wall according to the above method.

[0047] Embodiment 3:

[0048] The main structure of this embodiment is the same as that of the embodiment 2, and the structure of the demoulding assembly in the embodiment 2 is matched with that of the supporting bar 4 to make further improvements.

[0049] like Figures 4 to 6 As shown, a receiving groove 15 capable of accommodating the spherical surface of the demoulding column 11 is provided on the support bar 4 near the guide surface. The receiving groove 15 is an annular groove extending circumferentially around the support bar 4 to prevent the insertion of the demoulding column 11 in the receiving groove 15 from affecting the rotation of the support bar 4, thereby affecting the positioning of the support bar 4 by the rotating control handle 6; the receiving groove 15 is set as an arc surface that matches the spherical shape of the demoulding column 11, and the depth of the receiving groove 15 is equal to the length of the spherical surface of the demoulding column 11 extending into the through hole 14 when the demoulding column 11 is in the initial position.

[0050] In this embodiment, before the demoulding action is performed, the receiving groove 15 of the support bar 4 is matched with the spherical surface of the demoulding column 11, and the demoulding column 11 is at its initial position. When demoulding is required, the support bar 4 is pulled back, and the arc surface of the receiving groove 15 on the support bar 4 presses the spherical surface of the demoulding column 11, and the pressure acts on the concrete wall through the demoulding plate 12. As the support bar 4 is further pulled back to make the receiving groove 15 leave the demoulding column 11, the support bar 4 squeezes the demoulding column 11 to the maximum extent, and the pressure of the demoulding plate 12 on the wall is further increased, and finally the sub-board 1 corresponding to the support bar 4 is lifted to a certain height together with the mother board 2, so that the aluminum template is quickly removed from the concrete wall. Due to the pullback of the support bar 4, the support for the sub-board 1 is released, and when the aluminum template is removed from the wall, the sub-board 1 can also be folded.

[0051] In addition, in this embodiment, when the sub-board 1 is unfolded and assembled for concrete pouring, due to the provision of the receiving groove 15, the support bar 4 can be inserted into the mounting block 3 to enhance the support for the sub-board 1 to prevent the sub-board 1 from being lifted up by the impact force of the concrete pouring.

[0052] The structure of this embodiment can also be carried out according to the following process during the demoulding process: the demoulding process includes two stages of the support bar 4 advancing and retreating. The first stage is the same as that of Example 2. At this time, the spherical surface of the demoulding column 11 enters the receiving groove 15 of the support bar 4, the demoulding column 11 returns to the initial position, and the demoulding plate 12 is flush with the front of the sub-board 1; in the second stage, the support bar 4 is pulled back, and the arc surface of the receiving groove 15 of the support bar 4 presses the spherical surface of the demoulding column 11, so that the demoulding column 11 performs the demoulding action of the first stage again. After the above two stages, the template can be separated from the wall more easily.

[0053] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A foldable aluminum formwork for concrete pouring, characterized in that: The invention comprises a motherboard (2) and a sub-board (1) hinged on two opposite sides of the motherboard (2); the sub-board (1) can be folded on the back of the motherboard (2) and is flush with the front of the motherboard (2) after being unfolded; the backs of the motherboard (2) and the sub-board (1) are both provided with a frame and a sink groove surrounded by the frame; a support bar (4) is also slidably provided in the sink groove of the motherboard (2); the support bar (4) can pass through the frame of the motherboard (2) and the frame of the sub-board (1) to support the sub-board (1) to maintain the unfolded state; A demoulding assembly is arranged on the sub-plate (1), and the demoulding assembly comprises a mounting block (3) and a movable demoulding mechanism. The mounting block (3) is provided with a through hole (14) for inserting the support bar (4) and a demoulding hole (13) vertically connected to the through hole (14). The movable demoulding mechanism is arranged in the demoulding hole (13) and can extend from an opening on the front face of the sub-plate (1) along the demoulding hole (13) under the pressure of the support bar (4). The movable demoulding mechanism comprises a demoulding column (11) and a return spring (10) sleeved on the demoulding column (11); the inner end surface of the demoulding column (11) is a spherical surface; one end of the return spring (10) is connected to the demoulding column (11), and the other end is fixed to the inner wall of the demoulding hole (13); A stripping plate (12) is provided at the outer end of the stripping column (11), and the size of the stripping plate (12) matches the opening on the front side of the sub-plate (1); The end of the support bar (4) is provided with a guide surface for squeezing the spherical surface of the demoulding column (11); A receiving groove (15) capable of receiving the spherical surface of the demoulding column (11) is provided on the support bar (4) at a position close to the guide surface.

2. The foldable aluminum formwork for concrete pouring according to claim 1 is characterized in that: A guide cylinder (8) is arranged on the back of the motherboard (2), a guide groove (9) is provided on the guide cylinder (8) along its length direction, a sliding hole for the support bar (4) to enter and exit is provided on the end surface of the guide cylinder (8) close to the daughterboard (1), and a control handle (6) on the support bar (4) extends out from the guide groove (9).

3. The foldable aluminum formwork for concrete pouring according to claim 2, characterized in that: A positioning groove (7) perpendicular to the guide groove (9) is provided at one end of the guide groove (9) close to the sub-plate (1), and the positioning groove (7) is communicated with the guide groove (9).

4. The foldable aluminum formwork for concrete pouring according to claim 1 is characterized in that: The guiding surface is an inclined surface or a curved surface.

5. The foldable aluminum formwork for concrete pouring according to claim 1, characterized in that: It also includes a positioning connection structure for fixing the folded sub-board (1), the positioning connection structure including two parts with male and female matching parts, which are respectively arranged on the back side of the motherboard (2) and the back side of the sub-board (1).

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