CN109441100B - Reverse pulling supporting tool for PC laminated plate with bottom template - Google Patents

Abstract

The invention belongs to the field of building construction and mainly relates to a back-pull support tool for PC laminated boards with bottom formwork. In the present invention, the upper fixing part is placed on the upper part of the stacked plate through the supporting part, and the lower fixing part is placed on the lower part of the bottom template of the plate and strip. Fasteners are tightened. This invention is used to pull back the support from the board surface to ensure that the bottom formwork of the laminated board is close to the formwork and the force is uniform, and there will be no problem of excessive height of the formwork; the fixing piece is set to a form of a combination of soft and hard materials to ensure the fixation Under the premise of tightness, there will be no damage to the laminated plate and the plate bottom formwork; there is no need to set up the bottom formwork support frame, the construction is simple and efficient, and the construction quality is also guaranteed, and the reverse pull support tool can also be turned over multiple times. There is no loss in use and it is widely used in the support of prefabricated building composite panels with bottom formwork.

Description

A reverse pull support tool for PC laminated boards with bottom template

Technical field

The invention belongs to the field of building construction and mainly relates to a back-pull support tool for PC laminated boards with bottom formwork.

Background technique

Prefabricated construction projects have gradually developed in China. For the installation and construction of PC laminated panels in prefabricated buildings, the cast-in-place concrete pouring formwork support technology at the plate-strip connection parts of the laminated panels is the key technology for the laminated panel support construction. . Under the current construction of prefabricated buildings, the support of the laminated panels adopts supporting timbers set on point supports, while the support method at the plate strip is to set up adjustable jacking supporting timbers on steel pipes to support the formwork. This method is used Finally, in order to ensure the maximum close fit between the bottom formwork of the plate and the strip and the laminated plate, after adjusting the jack upwards, the elevation of the laminated plate will often appear to be too high. At the same time, the gap between the bottom formwork of the plate and the strip and the laminated plate will inevitably exist. After the pouring is completed, After concrete was placed, there was a quality problem in which a layer of concrete slurry was staggered under the laminated plates on both sides of the strip.

Therefore, it is necessary to invent a back-pull support tool for laminated boards with formwork to solve the problem of quality problems caused by excessively high formwork elevations during installation and construction of laminated boards and poor fit between the formwork and laminated boards.

Contents of the invention

The object of the present invention is to: in view of the above-mentioned existing problems, provide a back-pull support tool for PC laminated boards with bottom formwork, overcome the problem that the existing support tool is prone to excessive template elevation when used, and ensure that the board with bottom formwork is tightly adhered to each other. With laminated boards, there is no need to set up a board with bottom formwork support frame, the construction is simple and efficient, and the construction quality is also guaranteed.

The technical solution of the present invention is as follows:

A back-pull support tool for a PC laminated board with a bottom formwork, including an upper solid part and a lower fixing part; the upper fixing part is placed on the upper part of the laminated board through a support part, and the lower fixing part is placed on the bottom part of the board with the bottom formwork In the lower part, the upper fixing part and the lower fixing part are connected through holes of the screw rod. Fasteners are respectively provided at both ends of the screw rod, the upper surface of the upper fixing part and the lower surface of the lower fixing part to connect the upper fixing part and the lower fixing part. Fasteners are tightened.

Furthermore, the upper fixing part is a rigid fixing part, and the rigid fixing part is beneficial to the installation of the supporting part.

Further, the rigid fixing member is I-beam or channel steel. The most common I-beam and channel steel used in construction are selected, and the materials are widely available.

Further, the lower fixing part is an elastic fixing part. Preferably, the lower fixing member is made of wood. Setting elastic fasteners on the lower fasteners can effectively strengthen the tightness between the upper and lower fasteners while avoiding damage to the plate and bottom formwork.

Further, support members are welded to the four corners of the upper fixing member respectively. The support members are composed of a round steel and a cylinder of elastic material with a closed lower end that is sleeved on the outside of the round steel. The round steel is set in an elastic material cylinder. On the one hand, the round steel has an effective supporting effect. On the other hand, an elastic material cylinder is set at the contact point with the laminated plate, which can prevent the upper fastener from damaging the laminated plate during the tightening process. Produce destruction. After the pouring is completed, the round steel is extracted from the elastic material cylinder.

Further, the elastic material cylinder is a PVC pipe with a closed lower end. The PVC pipe remains on the laminated board and will be sealed during later filling, which will not affect the quality of the project.

Further, the height of the round steel is greater than the height of the elastic material cylinder, and the height of the elastic material cylinder is 8-10 cm. The pouring height of the laminated plate is 6-7cm, and the later filling height is about 4cm, ensuring that the elastic material cylinder can be completely sealed and covered in the later stage, and at the same time, it will not affect the round steel during pouring.

Further, the fasteners include butterfly clips and nuts. The screw rod and the upper fixing part are fastened by nuts. After the butterfly clip is installed between the screw rod and the lower fixing part, they are tightened by nuts. . When the lower fixing piece is an elastic fixing piece like a wooden square, adding a butterfly card can strengthen the fastening effect and make it less likely to damage the lower fixing piece.

Further, the support members are arranged symmetrically along both sides of the upper fixing member, and the screw holes of the upper and lower fixing members are located at the centers of the upper and lower fixing members. Ensure that the force on both sides between the fixing part and the laminated plate is even and increase the fastening effect.

In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are: by using the present invention to pull back the support from the board surface, the laminated board is evenly stressed, ensuring that the bottom formwork of the laminated board is close to the formwork, and at the same time, no formwork will occur The problem of excessive elevation; set the fixings and supports to a combination of soft and hard materials to ensure tight fixation without causing damage to the laminated plates and plate-strip bottom formwork; there is no need to set up a plate bottom formwork support frame The construction is simple and efficient, and the construction quality is guaranteed at the same time. The reverse pull support tool can also be used multiple times without loss, and is widely used in the support of prefabricated building composite panels with bottom formwork.

Description of the drawings

Figure 1 is a schematic diagram of the present invention.

Marked in the picture: 1-upper fixing piece, 2-lower fixing piece, 3-support piece, 4-laminated plate, 5-plate with bottom template, 6-screw, 7-butterfly card, 8-nut, 31- Round steel, 32-PVC pipe.

Detailed ways

In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention and are not intended to limit the present invention.

As shown in Figure 1, a support tool for PC laminated boards with bottom templates includes an upper fixing part 1 and a lower fixing part 2; the upper fixing part 1 is placed on the upper part of the laminated board 4 through the supporting part 3, and the lower fixing part 1 The fixing part 2 is placed at the lower part of the bottom template 5 of the plate and belt. The centers of the upper fixing part 1 and the lower fixing part 2 are connected through holes through the screw rod 6. By connecting the two ends of the screw rod 6 with the upper surface of the upper fixing part 1 and Fasteners are respectively provided on the lower surface of the lower fixing part 2 to fasten the upper fixing part 1 and the lower fixing part 2.

Further, the upper fixing piece 1 is made of I-beam.

Further, the lower fixing member 2 is made of wood.

Furthermore, support members 3 are respectively welded to the symmetrical four corners of the upper fixing member 1 along the central axis. The support members 3 are composed of a round steel 31 and a PVC pipe 32 with a closed lower end that is sleeved outside the round steel 31 . The height of the round steel is 10cm, and the height of the PVC pipe is 8cm.

Further, the fasteners include butterfly clips 7 and nuts 8 . The upper fixing part 1 and the screw rod 6 are connected and fixed by a single nut 8, and the lower fixing part 2 and the screw rod 6 are fixed by a butterfly clamp 7 and the nut 8. When the present invention is used, fasteners are used to fasten the upper fixing part 1 and the lower fixing part 2. Since the lower fixing part is made of wood, the lower fixing part 2, the nut 8 and the butterfly clamp 7 are mainly used for reverse locking, which can effectively prevent the laminated plate 4 from exceeding the designed elevation. After the pouring is completed, the fasteners are loosened, the screw rod is taken out, and the upper fixing part 1 and the lower fixing part 2 are disassembled and separated. Since the PVC pipe 32 of the support member 3 is solidified and combined with the laminated plate 4 during the pouring process, it is only necessary to take out the upper fixing member 1 with the round steel 31 from the PVC pipe 32 . The PVC pipe 32 remains in the laminated board 4 and will be blocked during subsequent filling construction.

The above descriptions are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention shall be included in the protection of the present invention. within the range.

Claims (1)

1. The utility model provides a PC superimposed sheet slab band bottom template's reverse support instrument that draws which characterized in that: comprises an upper fixing piece and a lower fixing piece; the upper fixing piece is arranged at the upper part of the laminated slab through the supporting piece, the lower fixing piece is arranged at the lower part of the plate strip bottom template, the upper fixing piece and the lower fixing piece are connected through screw rod perforation, and the upper fixing piece and the lower fixing piece are fastened through fasteners respectively arranged at the two ends of the screw rod and the upper surface of the upper fixing piece and the lower surface of the lower fixing piece;

the upper fixing piece is a rigid fixing piece; the rigid fixing piece is I-steel or channel steel; the lower fixing piece is an elastic fixing piece; the lower fixing piece is made of wood;

the four corners of the upper fixing piece are respectively welded with a supporting piece, and the supporting piece consists of round steel and an elastic material cylinder sleeved outside the round steel and with a closed lower end;

the elastic material cylinder is a PVC pipe with a closed lower end;

the height of the round steel is larger than that of the elastic material cylinder, and the height of the elastic material cylinder is 8-10cm;

the fastening piece comprises a butterfly clip and a screw cap, wherein the screw rod is fastened with the upper fixing piece through the screw cap, and the screw rod is fastened with the lower fixing piece through the screw cap after the butterfly clip is arranged between the screw rod and the lower fixing piece;

the support piece is symmetrically arranged along two sides of the upper fixing piece, and screw rod perforation holes of the upper fixing piece and the lower fixing piece are positioned in the center of the upper fixing piece and the center of the lower fixing piece.