Split screw and formwork system for fixing fair-faced concrete external wall insulation board

Abstract

The utility model discloses a split screw and template system for fixing a bare concrete external wall insulation board, the split screw comprises a screw (1), the screw (1) passes through two inner clamping plates (12) and two outer clamping plates (11), and the positions of the two inner clamping plates (12) and the two outer clamping plates (11) are limited through nuts (13). The heat preservation plate (3) is installed in the center of the infilled wall formwork (2), the opposite-pull screw (1) penetrates through the infilled wall formwork (2) and the heat preservation plate (3), the two inner clamping plates (12) clamp the heat preservation plate (3), and the two outer clamping plates (11) clamp the infilled wall formwork (2). According to the utility model, the screw rod which is matched with the opposite-pulling strength of the fair-faced concrete outer wall template project penetrates through the sandwich insulation board, the sandwich insulation board is clamped by the inner clamping plates on the two sides of the sandwich insulation board, and the steel gasket is fixed by the nut which is matched with the diameter of the thread of the opposite-pulling screw rod to prevent displacement, so that a very good reinforcing effect can be achieved.

Description

Technical Field

[0001] The utility model relates to the field of building construction, and particularly relates to a fixing structure for a thermal insulation board. Background Art

[0002] The sandwich thermal insulation board is widely used in the infill wall of the exterior wall of fair-faced concrete buildings. As a component outside the frame structure, the infill wall coordinates the loads of vertical components on the same floor, enabling the building to form a complete lateral force resistance system. At the parts where the infill wall is connected to the frame columns on both sides, the concrete needs to be treated with a weak connection to prevent the concrete in the infill wall part from changing the load of the frame columns and having an adverse impact on the structural stress. In actual construction, generally, the construction column is first poured, and after making a certain partition at the connection part, the infill wall is then constructed. At the same time, there is also a thermal insulation layer in the infill wall. When pouring the infill wall, the thermal insulation layer needs to be fixed in the center of the template first; currently, there are various methods for fixing the sandwich thermal insulation board, but the effects are not good. The lack of a suitable reinforcement method leads to insufficient reinforcement of the thermal insulation board and displacement of the thermal insulation board, affecting the pouring quality and forming effect of fair-faced concrete. Summary of the Invention

[0003] Aiming at the problem of how to fix the thermal insulation board in the template, the utility model provides a tie rod for fixing the thermal insulation board and a corresponding template system structure.

[0004] The technical solution of the utility model is as follows:

[0005] A tie rod for fixing the thermal insulation board of the fair-faced concrete exterior wall includes a screw rod 1, and is characterized in that: the screw rod 1 passes through two inner clamping plates 12 and two outer clamping plates 11, and the positions of the two inner clamping plates 12 and the two outer clamping plates 11 are restricted by nuts 13.

[0006] The inner clamping plate 12 is circular, and the outer clamping plate 11 is square.

[0007] The template system for fixing the thermal insulation board of the fair-faced concrete exterior wall includes an infill wall template 2 and a tie rod 1. The thermal insulation board 3 is installed in the center of the infill wall template 2. The tie rod 1 passes through the infill wall template 2 and the thermal insulation board 3. The two inner clamping plates 12 clamp the thermal insulation board 3, and the two outer clamping plates 11 clamp the infill wall template 2.

[0008] The infill wall template 2 is connected to the frame column template 4. The PVC strip 5 is used as the partition between the frame column and the infill wall. There are two wing plates extending outwards on both sides of the PVC strip 5. The overall cross-section of the PVC strip is in the shape of "艹". The end of the thermal insulation board 3 is stuck in the card slot formed by the two wing plates on the outside of the PVC strip 5.

[0009] The beneficial effects of the utility model are as follows:

[0010] 1. The screw rod used in the fair-faced concrete outer wall formwork engineering matches the tensile strength, passes through the sandwich insulation board, and the inner clamping plate is used on both sides of the sandwich insulation board to clamp the sandwich insulation board. The steel gasket is fixed by the nut matching the screw rod thread diameter to prevent displacement, which can play a good reinforcing role.

[0011] 2. The end of the insulation board is generally difficult to install the tensioning screw rod due to the proximity of the formwork edge. The wing plate on the outside of the PVC strip can be used as a clamping groove for the insulation board in the infill wall, which facilitates the positioning and fixation of the insulation layer in the formwork. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 is a structural diagram of a tensioning screw rod.

[0013] Figure 2 is a structural diagram of a tensioning screw rod clamping an insulation board.

[0014] Figure 3 is a structural plan view of the formwork system during pouring.

[0015] In the figure: 1 - screw rod; 2 - infill wall formwork; 3 - insulation board; 4 - frame column formwork; 5 - PVC strip; 11 - outer clamping plate; 12 - inner clamping plate; 13 - nut. DETAILED DESCRIPTION

[0016] Example 1:

[0017] As Figure 1 , the tensioning screw rod is composed of a screw rod 1, two inner clamping plates 12 and two outer clamping plates 11. The screw rod 1 passes through the two inner clamping plates 12 and the two outer clamping plates 11, and the positions of the two inner clamping plates 12 and the two outer clamping plates 11 are limited by the nuts 13. The inner clamping plate 11 is a circular steel gasket with a diameter of 100 mm, and the outer clamping plate 12 is a rectangular steel gasket.

[0018] The formwork system for fixing the insulation board of the fair-faced concrete outer wall includes an infill wall formwork 2 and a tensioning screw rod 1. The infill wall formwork 2 is centrally installed with an insulation board 3, and the tensioning screw rod 1 passes through the infill wall formwork 2 and the insulation board 3. Four nuts 13 are adjusted to clamp the insulation board 3 with two inner clamping plates 12 and clamp the infill wall formwork 2 with two outer clamping plates 11.

[0019] Example 2:

[0020] Since the ends of the insulation board 3 are at the edge positions of the formwork where the tensioning screw rod cannot be installed, the PVC strip is added to limit the end of the insulation board 3 based on Example 1. As Figure 3, the infill wall formwork 2 is connected to the frame column formwork 4. The PVC strip 5 is used as a partition between the frame column and the infill wall. There are two wing plates extending outward on both sides of the PVC strip 5. The overall cross-section of the PVC strip is in the shape of "艹". The end of the insulation board 3 is stuck in the card slot formed by the two wing plates on the outside of the PVC strip 5. The PVC strip can not only achieve weak connection between concrete components, but also restrict the freedom degree of the end of the insulation board 3.

Claims

1. A formwork system for fixing a fair-faced concrete external wall insulation board, comprising a filler wall formwork (2) and a tensioning screw rod (1), characterized in that: The filling wall template (2) is centrally provided with a heat insulation plate (3), a pull screw rod (1) passes through the filling wall template (2), the heat insulation plate (3), two inner clamping plates (12) and two outer clamping plates (11), the two inner clamping plates (12) clamp the heat insulation plate (3), the two outer clamping plates (11) clamp the filling wall template (2), and the positions of the two inner clamping plates (12) and the two outer clamping plates (11) are limited through nuts (13).

2. The formwork system for fixing fair-faced concrete external wall insulation board according to claim 1, characterized in that: The inner clamping plate (12) is circular, and the outer clamping plate (11) is square.

3. The formwork system for fixing fair-faced concrete external wall insulation board according to claim 1, characterized in that: The filling wall template (2) is connected with a frame column template (4), a PVC strip (5) is used as a partition plate between the frame column and the filling wall, both sides of the PVC strip (5) are provided with two wing plates extending outward, the cross section of the PVC strip as a whole is in the shape of "shou", and the end of the heat insulation plate (3) is clamped in a clamping groove formed by the two wing plates outside the PVC strip (5).

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