PP box formwork support system for multi-ribbed floor

Abstract

The utility model discloses a PP box formwork support system for a dense-ribbed floor, comprising a plurality of support devices arranged below the PP box formwork laying surface of the dense-ribbed floor and a plurality of box formwork joists for connecting adjacent support devices, the support device comprising a support top support arranged below the PP box formwork laying surface, the top of the support top support having a tray for splicing the plurality of box formwork joists, and the tray being provided with a limiting protrusion for installing and positioning the box formwork joists, and the end of the box formwork joists along its own length direction being provided with a card groove matched with the limiting protrusion; the utility model arranges a combined frame structure of a support tray and a box formwork joist on the PP box formwork laying surface, utilizes the limiting protrusion of the support tray to realize the positioning and installation of the box formwork joist and strengthens the connection stability between the support tray and the box formwork joist, thereby ensuring that the PP box formwork is stably installed on the support system.

Description

Technical Field

[0001] The utility model relates to the technical field of industrial building construction, in particular to a PP box formwork support system for a dense-ribbed floor. Background Art

[0002] In recent years, in order to pursue larger building space in industrial buildings, multi-rib floor structures have been widely used. Compared with conventional cast-in-place concrete floors, multi-rib floor structures require laying PP box formwork on the formwork before pouring concrete.

[0003] However, the current PP box formwork support system of the multi-ribbed floor is highly similar to the support system of the conventional concrete cast-in-place floor, which results in the failure to give full play to the support function of the PP box formwork when the support system is arranged, and wooden formwork and secondary ribs need to be arranged directly below the PP box formwork, which increases the amount of turnover materials; at the same time, when two adjacent box forms are laid, there is a gap between the box forms, and the gap needs to be filled again with materials such as extruded boards to ensure that the bottom surface of the multi-ribbed beam is flat and beautiful after the concrete is poured. Although there are structures in the prior art that improve the PP box formwork support system, for example, by setting the support trays of the box formwork overlap to a cross-shaped structure, the PP box formwork is installed by connecting four groups of support trays to form a tic-tac-toe structure to solve the problem of leakage or gap filling, the overall structure of the support tray of the cross-shaped structure is relatively complex, the manufacturing process is difficult, and the connection stability between adjacent support trays is also difficult to ensure. If the connection is broken or disconnected, it will greatly affect the installation of the PP box formwork on the support structure and the molding quality of the subsequent concrete pouring.

[0004] Therefore, it is necessary to improve the existing PP box formwork support system of the multi-ribbed floor slab, while ensuring the connection stability between the supporting trays on the PP box formwork laying surface, reducing the turnover material and labor costs, and solving quality problems such as concrete leakage and uneven finished surface at the bottom of the multi-ribbed beam. Utility Model Content

[0005] In view of this, the utility model provides a PP box formwork support system for dense-ribbed floor slabs, which, by arranging a combined frame structure of a support tray and a box formwork support beam on the PP box formwork laying surface, utilizes the limiting protrusions of the support tray to realize the positioning and installation of the box formwork support beam and strengthens the connection stability between the support tray and the box formwork support beam, thereby ensuring that the PP box formwork is firmly installed on the support system; at the same time, the support system gives full play to the supporting function of the PP box formwork, scientifically and reasonably solves the problem of filling the gaps between the box formworks, greatly saves turnover materials, simplifies the process, reduces labor costs, improves work efficiency, and ensures the forming quality of the dense-ribbed beam.

[0006] The utility model provides a PP box formwork support system for a dense-ribbed floor, comprising a plurality of support devices arranged below the PP box formwork laying surface of the dense-ribbed floor and a plurality of box formwork support beams for connecting adjacent support devices, wherein the support device comprises a support top bracket arranged below the PP box formwork laying surface, the top of the support top bracket has a tray for splicing a plurality of the box formwork support beams and the tray is provided with a limiting protrusion for installing and positioning the box formwork support beams, and the end of the box formwork support beam along its own length direction is provided with a slot cooperating with the limiting protrusion.

[0007] Furthermore, the pallet has four limiting protrusions and the four limiting protrusions are distributed at four corners on the pallet, and the ends of the four box mold support beams are spliced ​​on the pallet to form a "cross" structure.

[0008] Furthermore, the top of the box mold joist is provided with ribs for evenly dividing the box mold joist in the width direction, and the ribs are formed by vertically upward protrusions from the top of the box mold joist.

[0009] Furthermore, an overlap portion is formed between the edge of the box mold support beam in the width direction and the ribs, and the overlap portion is used to overlap with the bottom edge of the PP box mold.

[0010] Furthermore, the supporting device also includes a buckle upright rod arranged at the lower end of the supporting top bracket, and the buckle upright rod is used to bear the vertical load of the supporting top bracket.

[0011] Furthermore, the supporting top bracket also includes a screw rod arranged at the center bottom of the tray and an adjusting piece arranged on the screw rod. The supporting top bracket is inserted into the disc buckle upright rod through the screw rod and is threadedly connected with the disc buckle upright rod. The adjusting piece is used to adjust the insertion depth of the screw rod.

[0012] The beneficial effects of the utility model are as follows: the PP box formwork support system for dense-ribbed floor slabs provided by the utility model, by arranging a combined frame structure of a support tray and a box formwork support beam on the PP box formwork laying surface, utilizes the limiting protrusion of the support tray to realize the positioning installation of the box formwork support beam and strengthens the connection stability between the support tray and the box formwork support beam, thereby ensuring that the PP box formwork is stably installed on the support system; the support system effectively solves the problem of secondary caulking during installation between two adjacent PP box forms, and avoids quality problems such as uneven molding quality of the bottom component of the dense-ribbed beam; at the same time, the box formwork support beam makes it unnecessary to use wooden formwork and secondary ribs under the PP box formwork, thereby greatly saving turnover materials, simplifying the installation of the formwork and secondary ribs under the PP box formwork, optimizing the process, and saving labor costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The utility model is further described below in conjunction with the accompanying drawings and embodiments:

[0014] Figure 1 It is a structural schematic diagram of the PP box mold support system in the utility model;

[0015] Figure 2 This is a top view of the installation of the PP box mold support system in the utility model;

[0016] Figure 3 It is a structural schematic diagram of the box formwork joist in the utility model;

[0017] Figure 4 It is a structural schematic diagram of the jacking support in the utility model;

[0018] Figure 5 It is a top view of the supporting jack in the utility model;

[0019] Explanation of the reference numerals: 1-disc-shaped upright; 2-supporting top bracket; 3-box mold supporting beam; 4-PP box mold; 201-tray; 202-limiting protrusion; 203-screw; 204-adjusting member; 301-slot; 302-overlapping portion; 303-rib. DETAILED DESCRIPTION

[0020] As shown in the figure, the PP box form support system for the dense rib floor disclosed by the utility model comprises a plurality of support devices arranged below the PP box form laying surface of the dense rib floor and a plurality of box form support beams 3 for connecting adjacent support devices, wherein the support device comprises a support top bracket 2 arranged below the PP box form laying surface, the top of the support top bracket 2 has a tray 201 for splicing a plurality of the box form support beams 3, and the tray 201 is provided with a limiting protrusion 202 for installing and positioning the box form support beam 3, and the end of the box form support beam 3 along its own length direction is provided with a card groove 301 cooperating with the limiting protrusion 202; Figure 1 and Figure 2As shown, a plurality of support devices are evenly spaced on the PP box formwork laying surface of the dense-ribbed floor, and box formwork joists 3 are overlapped between adjacent support devices. Through the cooperation of a plurality of box formwork joists 3 and a plurality of support devices, a plurality of unit cell structures for placing PP box formwork 4 can be formed on the PP box formwork laying surface; a support top bracket 2 is arranged on the top of the support device, wherein the support top bracket 2 is mainly used to connect the upper and lower parts to transmit the load and cooperate with the fixed box formwork joists 3, and the adjacent box formwork joists 3 are mainly connected on the pallet 201 located on the top of the support top bracket 2, and in order to enable the box formwork joist 3 to be installed and positioned on the support top bracket 2, a A limiting protrusion 202 is provided, and the end of the box mold beam 3 located on the pallet 201 is also provided with a slot 301 that cooperates with the limiting protrusion 202, so that the connection between the box mold beam 3 and the supporting top support 2 is more stable, and the box mold beam 3 can be quickly installed and positioned when overlapped on the supporting top support 2, thereby improving the construction efficiency of the entire PP box mold support system; by arranging a combined frame structure of the supporting top support 2 and the box mold beam 3 on the PP box mold laying surface, the limiting protrusion 202 on the pallet 201 is used to realize the positioning and installation of the box mold beam 3 and strengthen the connection stability between the supporting top support 2 and the box mold beam 3, thereby ensuring that the PP box mold 4 is stably installed on the support system.

[0021] In this embodiment, the pallet 201 has four limiting protrusions 202, and the four limiting protrusions 202 are distributed at four corners on the pallet 201. The ends of the four box mold joists 3 are spliced ​​on the pallet 201 to form a "cross" structure; Figure 2 As shown, since the bottom of the PP box mold 4 is a square structure, at least four sets of supporting devices are required to cooperate with four box mold support beams 3 to overlap to form a rectangular unit cell support structure for installing the PP box mold 4. In order to ensure that the ends of adjacent box mold support beams 3 can be overlapped on the pallet 201 without interfering with each other, the ends of the box mold support beams 3 are designed to be a right-angle structure. Therefore, the ends of the four box mold support beams 3 are spliced ​​on the pallet 201 to form four box mold support beams 3 to form a "cross" beam frame structure. In order to enable the box mold support beams 3 to be quickly installed and positioned on the pallet 201, four limiting protrusions 202 are provided on the pallet 201 and the four limiting protrusions 202 are distributed on the pallet 201 at four corners, and the ends of the box mold support beams 3 are also provided with slots 301 that cooperate with the limiting protrusions 202.

[0022] In this embodiment, the top of the box mold joist 3 is provided with ribs 303 for evenly dividing the box mold joist 3 in the width direction, and the ribs 303 are formed by vertically protruding upward from the top of the box mold joist 3; Figure 3As shown, the box mold support beam 3 is mainly used to fix the PP box mold 4, transfer the load and fill the gap between the PP box molds 4. A rib 303 is set on the top of the box mold support beam 3 to evenly divide the box mold support beam 3 into two halves in the width direction, wherein the rib 303 is used to act as a filler in the gap between adjacent PP box molds 4, and the height of the rib 303 is consistent with the thickness of the bottom edge of the PP box mold 4; by setting the box mold support beam 3, the problem of secondary filling during the installation of the PP box mold 4 is solved, and quality problems such as uneven molding quality of the bottom component of the dense rib beam are avoided. At the same time, the box mold support beam 3 makes it unnecessary to use wooden templates and secondary ribs under the PP box mold 4, which greatly saves turnover materials, simplifies the installation of templates and secondary ribs under the PP box mold 4, optimizes the process, and saves labor costs.

[0023] In this embodiment, a lap joint 302 is formed between the edge of the box mold support beam 3 in the width direction and the rib 303, and the lap joint 302 is used to overlap with the bottom edge of the PP box mold 4; Figure 2 As shown, the edge of the box mold supporting beam 3 in the width direction and the portion between the ribs 303 form an overlapping portion for overlapping the bottom edge of the PP box mold 4, and a rectangular overlapping structure is formed in the four interconnected box mold supporting beams 3, and the installation of the PP box mold 4 can be completed through the rectangular overlapping structure.

[0024] In this embodiment, the supporting device also includes a buckle upright 1 arranged at the lower end of the supporting top support 2, and the buckle upright 1 is used to bear the vertical load of the supporting top support 2; in the construction process of the multi-rib floor, a buckle scaffolding is usually set up below the laying surface of the PP box form 4, and then the formwork is laid on the top of the buckle scaffolding and the PP box form 4 is laid by manual marking, and the top of the buckle scaffolding has a plurality of buckle uprights 1, and the installation of the supporting top support 2 is achieved through the buckle uprights 1, and the buckle uprights 1 can also be used to bear the supporting top support 2 and set the vertical load on the supporting top support 2 and transfer the force to the buckle scaffolding below.

[0025] In this embodiment, the support bracket 2 also includes a screw rod 203 disposed at the bottom of the center of the tray and an adjusting member disposed on the screw rod 203. The support bracket 2 is inserted into the buckle upright rod 1 through the screw rod 203 and is threadedly connected with the buckle upright rod 1. The adjusting member is used to adjust the insertion depth of the screw rod 203. Figure 1As shown, the top end of the screw 203 is welded to the center bottom of the pallet 201, and the threaded portion of the screw 203 extends into the top of the disc buckle upright 1 and is threadedly connected thereto to achieve the connection between the support top bracket 2 and the disc buckle upright 1; an adjustment member 204 is also provided on the screw 203, and the adjustment member 204 is a height adjustment disk, through which the depth of the threaded portion of the screw 203 extending into the disc buckle upright 1 can be controlled to achieve height control of the pallet 201, and multiple pallets 201 supporting top brackets 2 can be located on the same plane for laying the PP box mold 4.

[0026] In this embodiment, the construction steps of the support system are:

[0027] S1. Measurement and layout: Measure the position line of the scaffolding according to the PP box mold 4 plan layout drawing;

[0028] S2. Support system erection: erect the scaffolding according to the layout position, and place the support bracket 2 on the scaffolding. In addition to the special delivery load, the limit protrusion 202 on the top tray 201 can also effectively fix the box mold joist 3;

[0029] S3. Erection of PP box mold joist 3: Erection of box mold joist 3 on supporting top bracket 2, the box mold joist 3 can not only fix PP box mold 4, but also bear the load transferred by PP box mold 4, so that wooden formwork and secondary ribs are no longer used under PP box mold 4, and the raised ribs 303 in the middle can also effectively solve the gap filling between two adjacent PP box molds 4, resulting in uneven molding quality at the bottom of dense rib beam, etc., which greatly saves materials and labor costs;

[0030] S4. Place the PP box formwork 4: After setting up the box formwork joist 3 of a cell, the PP box formwork 4 can be placed. The set up PP box formwork 4 is an operating platform, which helps the operator to gradually move forward to place other PP box formworks 4, thereby completing the setting up of the PP box formwork 4 of the entire floor.

[0031] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A PP box formwork support system for multi-ribbed floor, characterized by: It comprises a plurality of supporting devices arranged below the PP box formwork laying surface of the dense-ribbed floor and a plurality of box formwork beams for connecting adjacent supporting devices, wherein the supporting device comprises a supporting top bracket arranged below the PP box formwork laying surface, the top of the supporting top bracket has a tray for splicing a plurality of the box formwork beams and the tray is provided with a limiting protrusion for installing and positioning the box formwork beams, and the end of the box formwork beam along its own length direction is provided with a slot cooperating with the limiting protrusion.

2. The PP box formwork support system for multi-ribbed floor according to claim 1 is characterized in that: The pallet is provided with four limiting protrusions, and the four limiting protrusions are distributed at four corners on the pallet, and the ends of the four box mold support beams are spliced ​​on the pallet to form a "cross" structure.

3. The PP box formwork support system for multi-ribbed floor according to claim 2 is characterized in that: The top of the box mold joist is provided with ribs for evenly dividing the box mold joist in the width direction, and the ribs are formed by vertically upward protrusions from the top of the box mold joist.

4. The PP box formwork support system for multi-ribbed floor according to claim 3 is characterized in that: An overlap portion is formed between the edge of the box mold support beam in the width direction and the ribs, and the overlap portion is used to overlap with the bottom edge of the PP box mold.

5. The PP box formwork support system for multi-ribbed floor according to claim 1 is characterized in that: The supporting device also includes a buckle upright rod arranged at the lower end of the supporting top bracket, and the buckle upright rod is used to bear the vertical load of the supporting top bracket.

6. The PP box formwork support system for multi-ribbed floor according to claim 5 is characterized in that: The supporting top bracket also includes a screw rod arranged at the center bottom of the tray and an adjusting piece arranged on the screw rod. The supporting top bracket is inserted into the disc buckle upright rod through the screw rod and is threadedly connected with the disc buckle upright rod. The adjusting piece is used to adjust the insertion depth of the screw rod.

Images