Recyclable prefabricated formwork concrete pouring auxiliary device

Abstract

A reusable prefabricated formwork concrete pouring auxiliary device comprises a lower U-shaped support, a connecting rod and a supporting formwork. The lower U-shaped supports are arranged in the poured formwork at intervals in the longitudinal direction. A U-shaped notch of the lower U-shaped support is arranged downwards, and the top of the lower U-shaped support is not lower than the top of a poured formwork. The connecting rods are arranged on the two sides of the tops of the set of lower U-shaped supports and gradually incline outwards from bottom to top. A tie bar is arranged between the upper ends of the connecting rods on the two sides of the top of the lower U-shaped support; the supporting formworks are arranged on the outer sides of all the sets of connecting rods, and the lower ends of the supporting formworks are in lap joint with the tops of the poured formworks on the corresponding sides. Steel wire ropes wrap the outer sides and the bottoms of the supporting formworks on the two sides, and the two ends of the steel wire ropes are connected to the upper portions of the inner side faces of the supporting formworks on the two sides respectively. The technical problems that during traditional concrete pouring, the height of a free falling body is too large, concrete falls outside a formwork and cannot be recycled, and on-site concrete pouring excess needs to be reduced are solved.

Description

Technical Field

[0001] This utility model belongs to the field of building concrete pouring, specifically relating to a reusable precast formwork concrete pouring auxiliary device. Background Technology

[0002] With the expansion of construction scale and technological advancements, ready-mixed concrete has become widely used. Centralized production at batching plants allows for more precise quality control and higher production efficiency. Simultaneously, to improve pouring quality and efficiency, automated pouring equipment has emerged, such as concrete placing booms that can evenly deliver concrete to designated locations, reducing manual handling. In the pouring of concrete onto formwork, improper methods, such as excessive free-fall height, can lead to segregation of the concrete during its descent, with the concrete falling outside the formwork being unrecoverable. Furthermore, poor formwork sealing or insecure joints can cause grout leakage, resulting in wasted concrete flowing through formwork gaps. Utility Model Content

[0003] The purpose of this utility model is to provide a reusable precast formwork concrete pouring auxiliary device to solve the technical problem of excessive free fall height of concrete during pouring, resulting in concrete falling outside the formwork and being unable to be recycled, and the need to reduce the amount of concrete poured on site.

[0004] To achieve the above objectives, the present invention adopts the following technical solution.

[0005] A reusable precast concrete pouring auxiliary device is installed between the pouring formwork and the pouring surface of the concrete placing machine. It includes a lower U-shaped support, connecting rods, and a supporting template. The lower U-shaped support is a set arranged longitudinally at intervals within the pouring formwork. The U-shaped opening of the lower U-shaped support faces downwards, and the top of the lower U-shaped support is not lower than the top of the pouring formwork. Two sets of connecting rods are respectively installed on both sides of the top of one set of lower U-shaped supports, and the connecting rods gradually slope outwards from bottom to top. Tie bars are provided between the upper ends of the connecting rods on both sides of the top of each lower U-shaped support. The supporting template is located outside each set of connecting rods, and the lower end of the supporting template overlaps the top of the pouring formwork on the corresponding side. Steel wire ropes are wrapped around the outside and bottom of the supporting templates on both sides, and the two ends of the steel wire ropes are respectively connected to the upper inner surface of the supporting templates on both sides.

[0006] Preferably, the connecting rods on both sides of the lower U-shaped support are symmetrically arranged.

[0007] Preferably, the connecting rod is made of steel bars and the inclination angle of the connecting rod is 45°; the lower end of the connecting rod is welded to the top of the lower U-shaped support.

[0008] Preferably, connecting plates are welded at intervals along the longitudinal axis on the connecting rod; the connecting plates are connected to the supporting template by bolt fasteners.

[0009] Preferably, the two sides of the tie rod are fixed to the upper end of the connecting rod by welding; the upper end of the wire rope is connected to the uppermost bolt fastener.

[0010] Preferably, the distance between the bottommost bolt fastener and the bottom edge of the support template is no more than 50mm, and the distance between the topmost bolt fastener and the bottom edge of the support template is no more than 350mm.

[0011] Compared with the prior art, the present invention has the following features and beneficial effects.

[0012] 1. When using a concrete placing boom for concrete pouring, this utility model only requires arranging this auxiliary device on the formwork to be poured, resulting in the following benefits: From an economic perspective, this device can be reused multiple times, significantly reducing formwork costs compared to traditional disposable formwork. From an environmental perspective, it reduces construction waste. Traditional pouring devices are usually discarded after use, causing significant landfill space occupation. The new auxiliary device effectively avoids this situation, aligning with current environmental protection concepts and helping to reduce the consumption of resources such as timber and steel bars. From a construction efficiency perspective, the new auxiliary device's fixing method reduces formwork installation time; disassembly is also easier, accelerating construction progress, shortening the construction period, and indirectly reducing project costs. From a safety perspective, it prevents injuries to workers caused by flying stones during material placement.

[0013] 2. Using this device to assist in concrete pouring, simply fix the auxiliary device manually to the beam and column formwork, and concrete pouring can begin. After the formwork is poured, the auxiliary device can be moved manually without calling for hoisting equipment, saving time and costs. The bolt fixing device used in this device will not damage the auxiliary device itself or the beam formwork structure. In addition, the steel reinforcement used for this device can be customized in consultation with the on-site steel reinforcement team to replace the steel reinforcement. Attached Figure Description

[0014] The present invention will now be described in further detail with reference to the accompanying drawings.

[0015] Figure 1 This is a schematic diagram of the structure of the precast formwork concrete pouring auxiliary device of this utility model.

[0016] Figure 2 This is a schematic diagram of the bolt fastener of this utility model installed on the connecting plate.

[0017] Attached reference numerals: 1 - Formwork to be poured, 2 - Lower U-shaped support, 3 - Bolt fastener, 4 - Connecting rod, 5 - Support formwork, 6 - Tie bar, 7 - Steel wire rope, 8 - Concrete placing machine pouring surface, 9 - Connecting plate. Detailed Implementation

[0018] During the concrete pouring of a certain project, due to the inconsistent elevation of the formwork for similar beams on site, and the fact that the concrete placing boom was directly placed on the fixed formwork surface, the concrete pouring height of the placing boom was inconsistent with the height difference between each formwork. There was a height difference of up to 1.5m between some formwork and the placing boom pipe, which easily led to concrete splashing and excessive waste.

[0019] like Figure 1-2 As shown, this reusable precast concrete pouring auxiliary device is installed between the pouring template 1 and the pouring surface 8 of the concrete placing machine; it includes a lower U-shaped support 2, connecting rods 4, and a support template 5; there is one set of lower U-shaped supports 2, which are arranged longitudinally at intervals within the pouring template 1; the U-shaped grooves of the lower U-shaped supports 2 are set downwards, and the top of the lower U-shaped supports 2 is not lower than the top of the pouring template 1; there are two sets of connecting rods 4, which are respectively set on the top two sides of one set of lower U-shaped supports 2, and the connecting rods 4 are gradually inclined outwards from bottom to top; a tie rod 6 is provided between the upper ends of the connecting rods 4 on both sides of the top of each lower U-shaped support 2; the support template 5 is set on the outside of each set of connecting rods 4, and the lower end of the support template 5 overlaps the top of the pouring template 1 on the corresponding side; steel wire ropes 7 are wrapped around the outside and bottom of the support templates 5 on both sides, and the two ends of the steel wire ropes 7 are respectively connected to the upper part of the inner side of the support templates 5 on both sides.

[0020] In this embodiment, the connecting rods 4 on both sides of the lower U-shaped support 2 are symmetrically arranged; the entire precast formwork concrete pouring auxiliary device is an axisymmetric structure.

[0021] In this embodiment, the connecting rod 4 is made of steel bars and the inclination angle of the connecting rod 4 is 45°; the lower end of the connecting rod 4 is welded to the top of the lower U-shaped support 2.

[0022] In this embodiment, connecting plates 9 are welded at intervals along the long axis on the connecting rod 4; the connecting plates 9 are connected to the supporting template 5 by bolt fasteners 3, and the supporting template 5 carried by the connecting rod 4 is inclined at the upper end of the pouring template 1. The supporting template 5 and the lower U-shaped support 2 are in contact with the pouring template 1 and directly bear the force of the poured concrete, maintaining the stability of the auxiliary structure and facilitating quality control.

[0023] In this embodiment, the two sides of the tie rod 6 are respectively fixed to the upper end of the connecting rod 4 by welding; the upper end of the wire rope 7 is connected to the uppermost bolt fastener 3.

[0024] In this embodiment, the distance between the bottommost bolt fastener 3 and the bottom edge of the supporting template 5 is no more than 50mm, and the distance between the topmost bolt fastener 3 and the bottom edge of the supporting template 5 is no more than 350mm. Quality control here refers to controlling the adverse effects of concrete pouring on the poured template, preventing uneven displacement under pressure. Bolt fasteners 3 are spaced along the axial direction of the connecting rod 4; each connecting rod 4 has at least two bolt fasteners 3; the bottom of the bolt fastener 3 is connected and fixed to the supporting template 5, and the top of the bolt fastener 3 is connected and fixed to the connecting plate 9 on the connecting rod 4. The connecting plate 9 has a rectangular structure. The tie rod 6 is welded to the upper end of the connecting rod 4 on both sides, and the wire rope 7 is fixed to the bolt fastener 3. The bolt fastener 3 is made of Q235 iron. The welding quality is level three welding. The center of the auxiliary device is aligned with the center of the beam template to avoid bias pressure and does not serve as a force transmission device. After the above devices are installed, formal concrete pouring can proceed. After the pouring is completed, simply move the device up manually, remove it, and move it to the next formwork pouring point.

[0025] In this embodiment, the lower U-shaped support 2 is made of φ16mm steel bar, the connecting rod 4 is made of φ10mm steel bar, and the tie rod 6 is made of φ8mm steel bar. Of course, in other embodiments, the diameter of the lower U-shaped support 2 can be selected according to the actual situation, such as φ14mm or φ18mm; the diameter of the connecting rod 4 can be selected according to the actual situation, such as φ12mm or φ8mm; and the tie rod 6 can be selected according to the actual situation, such as φ6mm or φ10mm.

[0026] In this embodiment, the construction method of this reusable precast formwork concrete pouring auxiliary device includes the following steps:

[0027] Step 1: Arrange the pouring formwork 1 on both sides of the beam to be poured;

[0028] Step 2: Arrange the lower U-shaped supports 2 between the pouring formwork 1 according to the corresponding width and height, so that the lower U-shaped supports 2 can be stably inserted between the pouring formwork 1 on the opposite side;

[0029] Step 3: Assemble the support template 5 and connecting rods 4; the connecting rods 4 are arranged longitudinally at intervals inside the support template 5 on each side, and the connecting rods 4 and the support template 5 are initially connected by bolt fasteners 3;

[0030] Step 4: Set the slope to 1:1 and use steel wire ropes 7 to fix the supporting templates 5 on both sides for a second time.

[0031] Step 5, tilting the support template 5: manual assistance can be provided to lower and position the support template 5 on both sides so that the center of the support template 5 on both sides coincides with the center of the beam template, and the lower end of the connecting rod 4 is connected to the top of the lower U-shaped support 2.

[0032] Step 6: The bolt fastener 3 and the connecting plate 9 are tightly connected to the support template. The bolt fastener 3 consists of Q235M20 bolts. The vertical distance between the bottom bolt fastener 3 and the bottom edge of the support template 5 is 50mm, and the vertical distance between the top bolt fastener 3 and the bottom edge of the support template 5 is 350mm.

[0033] In this embodiment, the components in this device are made from steel bars no more than 40cm long taken from the on-site steel bar scrap area for welding. This not only makes use of the steel bars but also saves on construction costs.

[0034] The above embodiments are not exhaustive examples of specific implementation methods, and other embodiments may also exist. The purpose of the above embodiments is to illustrate the present utility model, rather than to limit the protection scope of the present utility model. All applications derived from simple variations of the present utility model fall within the protection scope of the present utility model.

Claims

1. A reusable precast formwork concrete pouring auxiliary device, disposed between the pouring formwork (1) and the pouring surface (8) of the concrete placing machine; characterized in that: It includes a lower U-shaped support (2), connecting rods (4), and a support template (5); there is one set of lower U-shaped supports (2), which are arranged longitudinally at intervals inside the casting template (1); the U-shaped groove of the lower U-shaped support (2) is set downwards, and the top of the lower U-shaped support (2) is not lower than the top of the casting template (1); there are two sets of connecting rods (4), which are respectively set on the top two sides of one set of lower U-shaped supports (2), and the connecting rods (4) are gradually inclined outwards from bottom to top; a tie rod (6) is set between the upper ends of the connecting rods (4) on both sides of the top of each lower U-shaped support (2); the support template (5) is set on the outside of each set of connecting rods (4), and the lower end of the support template (5) overlaps the top of the casting template (1) on the corresponding side; steel wire ropes (7) are wrapped around the outside and bottom of the support templates (5) on both sides, and the two ends of the steel wire ropes (7) are respectively connected to the upper part of the inner side of the support templates (5) on both sides.

2. The reusable precast formwork concrete pouring auxiliary device according to claim 1, characterized in that: The connecting rods (4) on both sides of the lower U-shaped support (2) are symmetrically arranged.

3. The reusable precast formwork concrete pouring auxiliary device according to claim 1, characterized in that: The connecting rod (4) is made of steel bars and the inclination angle of the connecting rod (4) is 45°; the lower end of the connecting rod (4) is welded to the top of the lower U-shaped support (2).

4. The reusable precast formwork concrete pouring auxiliary device according to claim 1, characterized in that: Connecting plates (9) are welded at intervals along the long axis on the connecting rod (4); the connecting plates (9) and the supporting template (5) are connected by bolt fasteners (3).

5. The reusable precast formwork concrete pouring auxiliary device according to claim 4, characterized in that: The two sides of the tie rod (6) are fixed to the upper end of the connecting rod (4) by welding; the upper end of the wire rope (7) is connected to the uppermost bolt fastener (3).

6. The reusable precast formwork concrete pouring auxiliary device according to claim 4, characterized in that: The distance between the bottom bolt fastener (3) and the bottom edge of the support template (5) is no more than 50mm, and the distance between the top bolt fastener (3) and the bottom edge of the support template (5) is no more than 350mm.

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