CN103452143B - A post-cast tool-type formwork with convenient assembly and disassembly - Google Patents

Abstract

The invention discloses a post-cast strip tool type template convenient to assemble and disassemble, and relates to a device for building construction, which comprises two template main bodies opposite in position; a telescopic template supporting device is arranged between the back surfaces of the two template main bodies and comprises two pin shaft supports, two supporting rods and two threaded sleeves; the two pin shaft supports are respectively arranged on the back surfaces of the two template main bodies, pin holes are respectively formed in the two pin shaft supports, one ends of the two support rods are respectively inserted into the two pin holes, and positive and negative threads are respectively arranged at the ends, which are not inserted into the pin holes, of the two support rods; the two threaded sleeves respectively comprise shaft sleeves with threads and fixing plates connected with the shaft sleeves, the two threaded sleeves are respectively connected to one ends, not inserted into the pin holes, of the two supporting rods through the respective shaft sleeves, and the fixing plates of the two threaded sleeves are in butt joint through the fixing devices, so that the two supporting rods are connected between the back faces of the two template main bodies. The invention has the advantages of easy assembly and disassembly, turnover use, construction cost reduction, work efficiency improvement and the like.

Description

A post-cast tool-type formwork with convenient assembly and disassembly

technical field

The invention relates to a device for building construction, in particular to a formwork for pouring concrete.

Background technique

At present, in the design of cast-in-place reinforced concrete frames, considering the influence of temperature difference stress and uneven settlement of the foundation on the structure, most of them adopt indwelling post-casting strips, and indwelling post-casting strips are left on the foundation bottom plate and some positions that require waterproofing. Steel plate waterstop is also set in the middle, and this brings great difficulty to construction assembly and disassembly formwork, especially after foundation base plate 35 installs waterstop, cannot formwork removal at all. As shown in Figure 14, during construction, double-layer steel wire mesh 33 or fast and easy closing nets are used on both sides of the reserved post-cast belt 30, and steel skeleton 32 and steel support 34 are added to the upper and lower sides of the steel plate waterstop belt 31 to replace the post-cast belt. The side formwork is embedded in the concrete at one time, that is, there is no demolition process. There are following deficiencies in the above prior art scheme: 1, no demolition process In order to achieve the purpose of no grout leakage and effective combination with post-pouring concrete, double-layer steel wire mesh is used to block, the steel skeleton adds steel support, and is welded on site. Fixed, troublesome construction, high labor intensity and low work efficiency; 2. The steel wire mesh and steel skeleton are buried in the concrete at one time, which wastes a lot of steel and increases the construction cost; Relatively poor, the geometry of the cast tape after indwelling is poor.

Contents of the invention

The purpose of the present invention is to provide a post-cast belt tool-type formwork that is easy to assemble and disassemble, which can be used repeatedly, reduces construction costs, improves work efficiency, and can ensure that the construction quality of the post-cast belt retaining concrete meets the design requirements.

In order to achieve the above-mentioned purpose, the technical scheme adopted by the present invention is as follows: a post-cast belt tool formwork that is easy to assemble and disassemble, the post-cast belt tool formwork includes two formwork main bodies I and formwork main body II that are opposite to each other; A telescopic formwork support device is provided between I and the back of the formwork body II, and the telescopic formwork support device includes pin shaft support I, pin shaft support II, support rod I, support rod II, threaded sleeve I, threaded sleeve Cylinder II; the pin support I is set on the back of the formwork main body I, the pin support II is set on the back of the formwork main body II, the pin support I is provided with a pin hole I, and the pin support II is provided with a pin Hole II; one end of the support rod I is inserted into the pin hole I installed on the pin shaft support I on the back of the formwork body I, and one end of the support rod II is inserted into the pin hole II installed on the pin shaft support II on the back side of the template body II , the ends of the support rod I and the support rod II that are not inserted into the pin hole I and the pin hole II are respectively provided with positive and negative threads; Plate I, the threaded sleeve II includes a threaded shaft sleeve II and a fixed plate II connected to the shaft sleeve II, the threaded sleeve I is connected to the end of the support rod I that is not inserted into the pin hole I through the shaft sleeve I , the threaded sleeve II is connected to the end of the support rod II not inserted into the pin hole II through the shaft sleeve II, and the fixing plate I of the threaded sleeve I is docked with the fixing plate II of the threaded sleeve II through the fixing device, so that the support rod I and the supporting rod II are connected between the formwork main body I and the back of the formwork main body II.

A further technical solution of the present invention is: the formwork main body I and the formwork main body II respectively include a flat board and an iron plate covering the back of the wood board, and the pin support I and the pin support II are respectively welded on the iron plate superior.

The formwork main body I and the formwork main body II also include protective frames wrapped around the bottom end and the top end of the plank respectively.

The formwork main body I and the formwork main body II also include steel bar teeth welded at intervals to the protective frame at the bottom end of the plank or the protective frame at the top end of the plank respectively.

Both the support rod I and the support rod II are "┐" type.

A stiffening rib I is also provided between the shaft sleeve I of the threaded sleeve I and the fixing plate I, and a stiffening rib II is also provided between the shaft sleeve II of the threaded sleeve II and the fixing plate II.

The fixing device connecting the fixed plate I and the fixed plate II is a butterfly bolt, and the upper and lower ends of the fixed plate I and the fixed plate II are respectively provided with grooves matching the butterfly bolts.

Due to the adoption of the above structure, one of the post-cast belt tool formworks with convenient assembly and disassembly of the present invention has the following beneficial effects:

1. A post-casting tool-type formwork with convenient assembly and disassembly of the present invention is provided with two formwork main bodies I and II opposite to each other, and a telescopic formwork support device is arranged between the backs of the formwork main bodies I and II. The formwork support device supports the formwork main bodies I and II, and the formwork main bodies I and II are removed through the telescopic formwork support device after pouring, especially when the steel plate waterstop is installed in the post-casting belt construction, the formwork can also be easily supported and disassembled, which solves the problem In the past, there was a problem that the formwork of the post-casting belt of the steel plate waterstop could not be disassembled. The installation and disassembly are simple, convenient to operate, and improve work efficiency;

2. Compared with the steel wire mesh barrier process in the prior art, the formwork of the present invention can be used repeatedly, saving steel wire mesh and steel frame steel, saving construction costs, and easily ensuring the geometric size of the post-casting strip;

3. The technical scheme of the present invention makes the formwork to be built with good rigidity and high strength, which can ensure the construction quality of the post-pouring concrete with indwelling belt and meet the design requirements.

The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

Description of drawings

Fig. 1 is a structural diagram before connection of a telescopic formwork supporting device with a tool-type formwork for post-casting with convenient assembly and disassembly of the present invention;

Fig. 2 is a structural diagram of a telescopic formwork supporting device with a convenient post-casting tool formwork of the present invention after connection;

Fig. 3 is a view of the connection between the formwork main body and the pin shaft support of the upper formwork in a post-cast belt tool formwork that is easy to assemble and disassemble according to the present invention;

Fig. 4 is a view of the connection between the formwork main body and the pin shaft support of the middle and lower formwork of a post-cast belt tool formwork that is easy to assemble and disassemble according to the present invention;

Fig. 5 is the A-A direction sectional view of Fig. 3;

Fig. 6 is the B-B direction sectional view of Fig. 4;

Fig. 7 is a front view of the threaded sleeve I of the post-casting belt tool formwork which is easy to assemble and disassemble according to the present invention;

Fig. 8 is the left view of Fig. 7;

Fig. 9 is a top view of Fig. 7;

Fig. 10 is a front view of threaded sleeve II of post-casting belt tool formwork which is easy to assemble and disassemble according to the present invention;

Fig. 11 is the left view of Fig. 10;

Figure 12 is a top view of Figure 10;

Fig. 13 is the structural view of sawtooth wooden bar;

Fig. 14 is a schematic structural view of the post-casting belt reserved during the existing construction.

Description of the main components: 1—steel plate waterstop, 2—pin hole Ⅰ, 3—formwork body Ⅰ, 4—pin shaft support Ⅰ, 5—support rod Ⅰ, 6—shaft sleeve Ⅰ, 7—threaded sleeve Ⅰ , 8—butterfly bolt, 9—fixing plate Ⅰ, 10—fixing plate Ⅱ, 11—thread sleeve Ⅱ, 12—shaft sleeve Ⅱ, 13—support rod Ⅱ, 14—pin shaft support Ⅱ, 15—formwork body Ⅱ , 16—pin hole Ⅱ, 17—lower formwork, 18—reinforcing bar tooth, 19—iron plate, 20—wooden board, 21—guard frame, 22—stiffener Ⅰ, 23—groove, 24—stiffener Ⅱ, 25— on the template.

Detailed ways

As shown in Figures 1 to 12, the present invention is a post-cast belt tool formwork that is easy to assemble and disassemble (hereinafter referred to as "post-cast belt tool formwork"). The post-cast belt tool formwork includes two formwork bodies that are opposite to each other. I3 and the formwork main body II15, a telescopic formwork supporting device is arranged between the back of the formwork main body I3 and the formwork main body II15. As shown in Fig. 1 and Fig. 2, in this embodiment, a steel plate waterstop 1 is also installed for the indwelling post-casting belt, and a set of post-casting tool-type templates are respectively installed on the upper and lower sides of the steel plate waterstop 1. Among them, a group of post-casting tool formwork on the upper side of the steel water stop 1 is referred to as "upper formwork", and a group of post-casting tool formwork on the lower side of the steel waterstop 1 is referred to as "lower formwork".

The telescopic formwork support device includes a pin shaft support I4, a pin shaft support II14, a support rod I5, a support rod II13, a threaded sleeve I7, and a threaded sleeve II11. The pin support I4 is arranged on the back of the template main body I3, and the pin support II14 is arranged on the back of the template main body II15. In this embodiment, the formwork main body I3 and the formwork main body II15 respectively include a flat wooden board 20 and an iron plate 19 covering the back of the wooden board 20, wherein the wooden board 20 is a mahogany board, and the pin bearing I4, the pin bearing II14 are welded on the iron plate 19 respectively. A pin hole I2 is provided on the pin support I4, and a pin hole II16 is provided on the pin support II14. Both the support rod I5 and the support rod II13 are made of φ25 round steel, and both the support rod I5 and the support rod II13 are "┐" type, and one end of the support rod I5 is inserted into the pin support on the back of the formwork main body I3 In the pin hole I2 of I4, one end of the support rod II13 is inserted into the pin hole II16 of the pin shaft support II14 on the back of the formwork main body II15, and the support rod I5 and the support rod II13 are not inserted into the pin hole I2 and one end of the pin hole II16 There are positive and negative threads respectively, that is, external threads with opposite directions of rotation.

The threaded sleeve I7 includes a shaft sleeve I6 with internal threads and a fixed plate I9 connected with the shaft sleeve I6, and the threaded sleeve II11 includes a shaft sleeve II12 with internal threads and a fixed plate connected with the shaft sleeve II12 II10, a stiffening rib I22 is provided between the shaft sleeve I6 of the threaded sleeve I7 and the fixing plate I9, and a stiffening rib II24 is also provided between the shaft sleeve II12 of the threaded sleeve II11 and the fixing plate II10. The threaded sleeve I7 is connected to the end of the support rod I5 that is not inserted into the pin hole I2 through the shaft sleeve I6, the internal thread of the shaft sleeve I6 is connected to the external thread of the support rod I5, and the threaded sleeve II11 is connected through the shaft sleeve II12 At one end of the support rod II13 that is not inserted into the pin hole II16, the internal thread of the shaft sleeve II12 is connected to the external thread of the support rod II13. The fixing plate I9 of the threaded sleeve I7 is docked with the fixing plate II10 of the threaded sleeve II11 through the fixing device, so that the support rod I5 and the support rod II13 are connected between the back of the template body I3 and the template body II15. In this embodiment, the fixing device connecting the fixed plate I9 and the fixed plate II10 is a butterfly bolt 8, and the upper and lower ends of the fixed plate I9 and the fixed plate II10 are respectively provided with grooves 23 that cooperate with the butterfly bolt 8. One end of the middle butterfly bolt 8 is directly connected in the groove 23 of the fixing plate I9.

In this embodiment, the template main body I3 and the template main body II15 also include protective frames 21 wrapped around the bottom and top of the plank 20 respectively, and the protective frames 21 are made of L30 angle iron. The formwork main body I3 and the formwork main body II15 also include steel bar teeth 18 welded at intervals on the bottom guard frame 21 of the plank 20 or the top guard frame 21 of the plank 20 respectively, wherein the steel bar teeth 18 of the upper formwork 25 are welded at intervals on the top guard frame 21 of the plank 20 , and the reinforcement teeth 18 of the lower formwork 17 are welded on the frame 21 at the bottom end of the plank 20 at intervals, as shown in Figures 4 and 6. The steel bar teeth 18 on the upper formwork 25 are welded with φ10 steel bars with a height of 40 mm and a spacing of 325 mm. The upper formwork 25 is additionally equipped with sawtooth wooden strips (as shown in Figure 13) that cooperate with the steel bar teeth 18, and are sealed and sealed with sawtooth wooden strips The position gap between the 25 steel bar teeth 18 of upper formwork on the belt. The steel bar tooth 18 of lower template 17 adopts φ 10 steel bar to weld high 50mm, and spacing is 125mm. Upper formwork 25 and lower formwork 17 are different except that the position of reinforcing bar tooth 18, other structures are exactly the same.

When the formwork is installed, the lower formwork 17 on the lower side of the steel plate waterstop 1 is installed earlier, and then the upper formwork 25 on the upper side of the steel plate waterstop 1 is installed. When installing, put the formwork main body Ⅰ and Ⅱ of the lower formwork 17 and the upper formwork 25 into the bound steel bars, and then respectively insert the "┐" type support rod Ⅰ5 and support rod Ⅱ 13 pins into the back of the corresponding formwork main body Ⅰ and Ⅱ. Push the lower template 17 and the upper template 25 into the installation position in the pin holes I and II, the threaded sleeve I7 is connected to the end of the support rod I5 that is not inserted into the pin hole I2, and the threaded sleeve II11 is connected to the end of the support rod II13 that is not inserted into the pin One end of the hole II16 connects the fixing plate I9 of the threaded sleeve I7 to the fixing plate II10 of the threaded sleeve II11 through the butterfly bolt 8, so that the support rod I5 and the support rod II13 are connected between the backs of the formwork main bodies I3 and II15. Adjust the telescopic formwork support device to correct and fix the formwork, rotate the bushings of the two threaded sleeves through the stiffener, and turn the two threaded sleeves clockwise, so that the support rod Ⅰ5 and support rod Ⅱ13 with positive and negative teeth stretch out, and the lower formwork 17 The formwork main bodies I and II of the upper formwork 25 play a supporting role, and the lower formwork 17 and the upper formwork 25 are corrected and fixed. Finally, use steel wire mesh to lay out the gaps between the teeth of the steel bars of the lower formwork under the waterstop of the steel plate, and use sawtooth wooden strips to seal the gaps between the teeth of the steel bars of the upper formwork above the waterstop of the steel plate.

Concrete can be poured after upper template 25 and lower template 17 are corrected and fixed. Concrete pouring and tamping adopts left-right symmetrical pouring to ensure that the post-pouring belt is placed in an accurate position. When the concrete strength reaches 30%, the formwork can be removed. Before dismantling, clean up the falling slurry and sundries in the post-casting belt 16, and then rotate the bushings of the two threaded sleeves through the stiffeners, and when turning counterclockwise, make the support rod Ⅰ5 with positive and negative teeth and the support rod Ⅱ13 inward Shrink, thereby driving the formwork main bodies Ⅰ and Ⅱ of the lower formwork 17 and the upper formwork 25 to separate from the pouring body; after the formwork main bodies Ⅰ and Ⅱ are loose, loosen the butterfly bolt 8 on the telescopic formwork support device to separate the support rod Ⅰ5 from the support rod Ⅱ13 , and then drag the lower formwork 17 and upper formwork 25 to the edge of the steel plate waterstop by using the support pole I5 and the support pole II13 respectively, remove the support pole I5 and the support pole II13 from the lower formwork 17 and the upper formwork 25, and move the lower formwork 17 and the upper formwork 25 by hand. The formwork main bodies I and II of the formwork 17 and the upper formwork 25 are taken out from the reserved openings and cleaned up for next use.

The embodiment of the present invention is mainly aimed at the structure installed with steel plate waterstop, and is not limited to the forms listed in the above implementation. As a transformation form of the present invention, for the structure without steel plate waterstop, it is not necessary to make and install the upper and lower templates. Manufacture and install the entire formwork directly according to the structural size. If the section height exceeds 400mm, install two layers of telescopic formwork support devices according to this example, and install one layer of telescopic formwork support devices if the section height is below 400mm.

The above-mentioned embodiment is only a preferred embodiment of the present invention, and the present invention is not limited to the forms listed in the above-mentioned embodiments. As a transformation form of the present invention, the structure of the template main body I and the template main body II is not limited to the above-mentioned examples. For example, the formwork main body I and the formwork main body II can also be made of only wooden boards, and the pin shaft support is fixedly connected to the back of the wooden board by screws or bolts; it is not necessary to set the formwork main body I and the formwork main body II Protective frame and steel bar teeth; support rod I and support rod II are not necessarily "┐" type; there may be no stiffening ribs between the shaft sleeve and the fixed plate of the threaded sleeve, but the shaft sleeve and the fixed plate are directly connected; the connection The fixing device of fixed plate I and fixed plate II also can be not butterfly bolt, but other fixing devices, as common bolt etc.; The transformations done all belong to the category of the present invention.

Claims (7)

1. A post-cast belt tool-type formwork that is easy to assemble and disassemble, characterized in that: the post-cast belt tool-type formwork includes two oppositely positioned formwork main bodies I (3) and formwork main body II (15); (3) and the back of the formwork main body II (15) is provided with a telescopic formwork support device, the telescopic formwork support device includes pin shaft support I (4), pin shaft support II (14), support rod I ( 5), support rod Ⅱ (13), threaded sleeve Ⅰ (7), threaded sleeve Ⅱ (11); the pin shaft support Ⅰ (4) is set on the back of the formwork main body Ⅰ (3), and the pin shaft support Ⅱ (14) Set on the back of the formwork main body II (15), the pin hole I (2) is provided on the pin support I (4), and the pin hole II (16) is provided on the pin support II (14); One end of the support rod I (5) is inserted and installed in the pin hole I (2) of the pin shaft support I (4) on the back of the template body I (3), and one end of the support rod II (13) is inserted and installed in the template body In the pin hole II (16) of the pin shaft support II (14) on the back of II (15), the support rod I (5) and the support rod II (13) are not inserted into the pin hole I (2), pin hole II ( 16) One end is respectively provided with positive and negative threads; the threaded sleeve I (7) includes a threaded shaft sleeve I (6) and a fixed plate I (9) connected with the shaft sleeve I (6). The threaded sleeve II (11) includes a threaded shaft sleeve II (12) and a fixed plate II (10) connected to the shaft sleeve II (12). The threaded sleeve I (7) passes through the shaft sleeve I (6 ) is connected to the end of the support rod I (5) that is not inserted into the pin hole I (2), and the threaded sleeve II (11) is connected to the end of the support rod II (13) that is not inserted into the pin hole II ( 16), connect the fixed plate I (9) of the threaded sleeve I (7) with the fixed plate II (10) of the threaded sleeve II (11) through the fixing device, so that the support rod I (5) and the support rod II (13) is connected between the template body I (3) and the back of the template body II (15). 2. The post-casting tool-type formwork with convenient assembly and disassembly as claimed in claim 1, characterized in that: said formwork main body I (3) and formwork main body II (15) respectively include flat boards (20) and cover On the iron plate (19) on the back side of the plank (20), the pin bearing I (4) and pin bearing II (14) are respectively welded on the iron plate (19). 3. The easy-to-assemble post-cast tool-type formwork according to claim 2, characterized in that: the formwork main body I (3) and the formwork main body II (15) also respectively include And the guard frame (21) of top. 4. The post-cast tool-type formwork with convenient assembly and disassembly as claimed in claim 3, characterized in that: said formwork main body I (3) and formwork main body II (15) also include protective frames welded at intervals at the bottom of the plank (21) or plank top guard frame (21) go up steel bar tooth (18). 5. The post-cast belt tool-type formwork with convenient assembly and disassembly according to claim 1, characterized in that: the support rod I (5) and the support rod II (13) are both "┐" type. 6. The post-cast belt tool formwork with convenient assembly and disassembly according to claim 1, characterized in that: there is a gap between the shaft sleeve I (6) of the threaded sleeve I (7) and the fixed plate I (9). A stiffening rib I (22) is provided, and a stiffening rib II (24) is also provided between the shaft sleeve II (12) of the threaded sleeve II (11) and the fixing plate II (10). 7. The post-cast belt tool formwork with convenient assembly and disassembly as claimed in claim 1, characterized in that: the fixing device connecting the fixed plate I (9) and the fixed plate II (10) is a butterfly bolt (8), and the fixed plate The upper and lower ends of I (9) and the fixing plate II (10) are respectively provided with grooves (23) that cooperate with butterfly bolts (8).