A bottom die support device of a steel bar truss floor support plate

Abstract

The application belongs to the technical field of steel bar truss floor support plate, and particularly relates to a bottom die supporting device of a steel bar truss floor support plate, which comprises a steel bar truss, wherein the steel bar truss comprises a top chord, a bottom chord and a web, the bottom chord of the steel bar truss is connected with two connecting plates, a bottom die is arranged below the two connecting plates, two rows of bolts are arranged on the bottom die and pass through the top of the bottom die, threaded holes matched with the bolts are formed in the bottom of the connecting plates, and two rows of rotating blocks are rotatably connected to the bottom of the bottom die. The supporting rod and the lifting block are detachably connected, temporary support erection is convenient, the cylinder drives the lifting block to move the translation plate, the rotating block is rotated to drive the bolt to rotate, the bolt is separated from the threaded hole, the bottom die is disassembled, and the bottom die and the connecting plate can be assembled quickly according to the same principle. The bottom die is convenient to disassemble and assemble, the artificial cost is reduced, the bottom die can be repeatedly used, is light and flexible, and is energy-saving and environment-friendly.

Description

Technical Field

[0001] This invention belongs to the technical field of steel truss floor decking, specifically relating to a bottom formwork support device for steel truss floor decking. Background Technology

[0002] Steel truss floor decking refers to a combined load-bearing slab consisting of a steel truss and a bottom formwork. After the bottom formwork is overlapped, supporting angle steel is installed, edge mother plates are installed, the trusses are overlapped with steel beams, and steel bars are tied, followed by concrete pouring.

[0003] Currently, reinforced steel truss floor slabs include two types: removable bottom formwork and non-removable bottom formwork. However, the following problems exist:

[0004] (1) Non-removable bottom formwork: The bottom formwork is for single use, which is not energy-saving and environmentally friendly, and the presence of the bottom formwork makes the finished floor less aesthetically pleasing;

[0005] (2) Demountable bottom formwork: The bottom formwork is reusable, lightweight and flexible, but the installation and dismantling of the bottom formwork is troublesome, requiring manual removal of multiple bolts, resulting in high labor costs; secondly, the load that the demountable bottom formwork can withstand is relatively small, and if the installation site exceeds the span requirement, steel pipe scaffolding is required to add temporary support, and the erection process of temporary support is complicated.

[0006] Therefore, there is an urgent need to develop a bottom formwork support device for steel truss floor slabs. The bottom formwork can be quickly installed and disassembled, and it has a temporary support function, which is both environmentally friendly and labor-saving, thereby solving the above problems. Summary of the Invention

[0007] In order to solve the problems in the above-mentioned background technology, such as non-removable bottom formwork being not energy-saving and environmentally friendly, detachable bottom formwork being cumbersome to install and dismantle, and temporary support being complicated, the present invention provides a bottom formwork support device for steel truss floor decking.

[0008] The technical implementation of this invention is as follows: a bottom formwork support device for a steel truss floor slab, comprising a steel truss, the steel truss including an upper chord, a lower chord, and web members; two connecting plates connected to the bottom of the lower chord of the steel truss; a bottom formwork provided below the two connecting plates; two rows of bolts extending from the top of the bottom formwork provided on the bottom formwork; threaded holes for cooperating with the bolts opened at the bottom of the connecting plates; two rows of rotating blocks rotatably connected to the bottom of the bottom formwork; a pair of translation plates slidably connected to the left and right sides of the bottom of the bottom of the bottom formwork; a telescopic rod rotatably connected between the rotating blocks and the translation plates; a driving assembly provided at the bottom of the bottom formwork; when the driving assembly drives the translation plates to translate, the telescopic rod pulls the rotating blocks to rotate, so that the bolts leave the threaded holes; a support rod is detachably provided on the driving assembly.

[0009] As a further preferred embodiment, the rotating block is hollow inside, and the bottom end of the bolt extends into the rotating block.

[0010] As a further preferred embodiment, the inner wall of the rotating block is provided with multiple strip-shaped portions at intervals, and the bottom of the bolt is provided with multiple grooves that mate with the strip-shaped portions at intervals; the bolt can slide up and down relative to the rotating block, and the rotation of the rotating block will drive the bolt to rotate.

[0011] As a further preferred embodiment, the drive assembly includes a support base, a hinge rod, a lifting block, and a cylinder. Two support bases are slidably connected to the bottom of the bottom mold, and the two support bases are respectively connected to two pairs of translation plates. A cylinder is installed in the middle of the bottom of the bottom mold, and a lifting block is connected to the movable rod of the cylinder. A hinge rod is rotatably connected between the lifting block and the support base.

[0012] As a further preferred embodiment, the bottom of the lifting block is connected to a nut, and the top of the support rod is provided with a threaded groove.

[0013] As a further preferred embodiment, the nut portion and the threaded groove cooperate to make the support rod detachably connected to the lifting block.

[0014] As a further preferred embodiment, it also includes a support base, a movable cylinder, and a threaded rod. The support base is located below the support rod, and the movable cylinder is movably inserted into the support base. The bottom of the support rod is connected to a threaded rod, and the movable cylinder is threadedly connected to the threaded rod.

[0015] As a further preferred embodiment, an adjusting handwheel is also included, which is connected to the movable cylinder.

[0016] Compared with the prior art, the present invention has the following advantages: 1. The support rod and the lifting block are detachably connected, making temporary support easy to set up. The cylinder drives the lifting block to move the translation plate, and the rotating block drives the bolt to rotate, causing the bolt to leave the threaded hole and the bottom mold to be removed. Similarly, the bottom mold and the connecting plate can be quickly assembled without the need for manual tightening of bolts multiple times. The bottom mold is easy to disassemble and install, reducing labor costs. In addition, the bottom mold can be reused, is lightweight and flexible, and is energy-saving and environmentally friendly.

[0017] 2. By rotating the adjusting handwheel, the movable cylinder is rotated so that the bottom of the movable cylinder extends into the bottom of the support base, thereby allowing the total length of the support rod, threaded rod and movable cylinder to adapt to different floor heights. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0019] Figure 2This is a schematic diagram of the steel truss, connecting plate, bottom formwork, rotating block, translation plate and telescopic rod of the present invention.

[0020] Figure 3 For the present invention Figure 2 Another structural diagram from a different perspective shows the location of the bolts.

[0021] Figure 4 For the present invention Figure 2 The bottom view in the image.

[0022] Figure 5 For the present invention Figure 2 Enlarged view of point A in the image.

[0023] Figure 6 This is a schematic diagram of the structure of the bolt, rotating block, translation plate and telescopic rod of the present invention, wherein the rotating block is cut open.

[0024] Figure 7 This is a schematic diagram of the structure of the hinge rod, lifting block, support rod, support base, movable cylinder, threaded rod and adjusting handwheel of the present invention, wherein the support base and movable cylinder are cut open.

[0025] Figure 8 This is a schematic diagram showing the positions of the nut portion and the threaded groove of the present invention, wherein the nut portion is cut open.

[0026] Figure 9 This is an exploded view of the support rod, support base, movable cylinder, threaded rod, and adjusting handwheel of the present invention, wherein the support base and movable cylinder are cut open.

[0027] The components in the attached diagram are labeled as follows: 1: steel truss, 2: connecting plate, 3: bottom formwork, 4: bolt, 5: rotating block, 51: groove, 52: strip-shaped part, 6: translation plate, 7: telescopic rod, 81: support base, 82: hinge rod, 83: lifting block, 831: nut part, 84: cylinder, 9: support rod, 90: threaded groove, 91: support base, 92: movable cylinder, 93: threaded rod, 94: adjusting handwheel. Detailed Implementation

[0028] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0029] Implementation Method 1: A bottom formwork support device for a steel truss floor slab, such as... Figures 1-9As shown, the structure includes a steel truss 1, connecting plates 2, a bottom formwork 3, bolts 4, rotating blocks 5, a translation plate 6, a telescopic rod 7, a drive assembly, and a support rod 9. The steel truss 1 includes an upper chord, a lower chord, and web members. Two connecting plates 2 are fixedly connected to the bottom of the lower chord of the steel truss 1. A bottom formwork 3 is located below the two connecting plates 2, and two rows of bolts 4 are provided on the bottom formwork 3. The bolts 4 protrude from the top of the bottom formwork 3. The bottom of the connecting plates 2 has threaded holes that mate with the bolts 4. Two rows of rotating blocks 5 are rotatably connected to the bottom of the bottom formwork 3. The rotating blocks 5 are hollow inside, and the bottom ends of the bolts 4 extend into the interior of the rotating blocks 5. (Reference) Figure 6 The inner wall of the rotating block 5 is provided with four strip-shaped portions 52 evenly spaced apart, and the bottom of the bolt 4 is provided with four grooves 51 evenly spaced apart to cooperate with the strip-shaped portions 52. The cooperation between the strip-shaped portions 52 and the grooves 51 allows the bolt 4 to slide up and down relative to the rotating block 5, and the rotation of the rotating block 5 will drive the bolt 4 to rotate. A pair of translation plates 6 are slidably connected to the bottom left and bottom right of the bottom mold 3, and a telescopic rod 7 is rotatably connected between the rotating block 5 and the adjacent translation plates 6. The bottom of the bottom mold 3 is provided with a driving assembly. When the driving assembly drives the translation plates 6 to translate, the telescopic rod 7 pulls the rotating block 5 to rotate, which can make the bolt 4 leave the threaded hole, thereby disassembling the bottom mold 3. The driving assembly is provided with a detachable support rod 9.

[0030] like Figure 1 , Figure 2 , Figure 4 , Figure 7 and Figure 8 As shown, the drive assembly includes a support base 81, a hinge rod 82, a lifting block 83, and a cylinder 84. Two support bases 81 are slidably connected to the bottom of the bottom mold 3. The two support bases 81 are welded to two pairs of translation plates 6 respectively. A cylinder 84 is bolted to the middle of the bottom of the bottom mold 3. A lifting block 83 is fixedly connected to the movable rod of the cylinder 84. A nut part 831 is connected to the bottom of the lifting block 83. The top of the support rod 9 is provided with a threaded groove 90. The nut part 831 and the threaded groove 90 cooperate to make the support rod 9 and the lifting block 83 detachably connected. A hinge rod 82 is rotatably connected between the lifting block 83 and the support base 81.

[0031] like Figure 1 , Figure 7 and Figure 9 As shown, it also includes a support base 91, a movable cylinder 92, and a threaded rod 93. The support base 91 is located below the support rod 9, and the movable cylinder 92 is movably inserted into the support base 91. The threaded rod 93 is welded to the bottom of the support rod 9, and the movable cylinder 92 is threadedly connected to the threaded rod 93. It also includes an adjusting handwheel 94, which is welded to the upper part of the movable cylinder 92. The adjusting handwheel 94 is used to adjust the total length of the support rod 9, the threaded rod 93, and the movable cylinder 92.

[0032] In the initial state, bolt 4 is screwed into the threaded hole, thereby connecting the bottom formwork 3 to the connecting plate 2 through bolt 4, and the support base 91 is installed on the ground. By manually turning the adjusting handwheel 94, the movable cylinder 92 is driven to rotate. Since the movable cylinder 92 is threadedly connected to the threaded rod 93, the rotating movable cylinder 92 will descend simultaneously, so that the bottom of the movable cylinder 92 extends into the bottom of the support base 91. The total length of the support rod 9, the threaded rod 93 and the movable cylinder 92 can adapt to different floor heights. Since the height of the lifting block 83 is controlled by the cylinder 84, the position of the lifting block 83 is relatively fixed with the position of the cylinder 84. Thus, the bottom formwork 3 and the steel truss 1 are supported by the support base 91, the movable cylinder 92, the threaded rod 93, the support rod 9, the lifting block 83, the hinge rod 82 and the support seat 81, making the temporary support erection more convenient.

[0033] After the bottom formwork 3 is completed, the following procedures are carried out: installing the supporting angle steel, installing the side mother plate, connecting with the steel beam, and binding the reinforcing bars. Then, concrete can be poured. The temporary support function increases the load-bearing capacity, thus enabling it to adapt to construction sites with larger spans.

[0034] After the poured concrete has set, the control cylinder 84 drives the lifting block 83 to rise. The lifting block 83 drives the support rod 9, the threaded rod 93, and the movable cylinder 92 to rise. The rise of the lifting block 83 also drives the hinge rod 82 to rotate. Through the hinge rod 82, the two support seats 81 move away from each other. The translation plate 6 moves together with the support seats 81. The translation plate 6 pulls the rotating block 5 to rotate through the telescopic rod 7. The telescopic rod 7 can extend and retract adaptively. The rotating block 5 drives the bolt 4 to rotate together, so that the bolt 4 leaves the threaded hole. Through the cooperation of the strip part 52 and the groove 51, the bolt 4 can slide up and down relative to the rotating block 5. After the bolt 4 leaves the threaded hole, the bottom mold 3 can be removed from the connecting plate 2. Then, the support rod 9 can be rotated relative to the nut part 831 to remove the support rod 9 from the nut part 831 of the lifting block 83. There is no need to manually tighten the bolt 4 multiple times, making disassembly more convenient, reducing labor costs. Moreover, the bottom mold 3 can be reused, is lightweight and flexible, and is energy-saving and environmentally friendly.

[0035] When it is necessary to reassemble the bottom formwork 3 and the connecting plate 2, first align the bolts 4 with the threaded holes one by one, and control the cylinder 84 to drive the lifting block 83 to reset. Similarly, the lifting block 83 drives the hinge rod 82 to reverse, causing the two support seats 81 to move closer to each other. The translation plate 6 pulls the rotating block 5 to reverse through the telescopic rod 7. The reversed rotating block 5 drives the bolts 4 to reverse, so that the bolts 4 are screwed into the threaded holes. Without the need for manual multiple tightening of the bolts 4, the bottom formwork 3 can be quickly assembled on the connecting plate 2. Then, through the cooperation of the nut part 831 and the threaded groove 90, the support rod 9 is connected to the nut part 831, and the temporary support can be erected again and the concrete can be poured.

[0036] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that variations may be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A bottom formwork support device for a steel truss floor slab, comprising a steel truss (1), wherein the steel truss (1) includes an upper chord, a lower chord, and web members, characterized in that, The bottom of the lower chord of the steel truss (1) is connected to two connecting plates (2), and a bottom mold (3) is provided below the two connecting plates (2). The bottom mold (3) is provided with two rows of bolts (4) protruding from the top of the bottom mold (3). The bottom of the connecting plates (2) is provided with threaded holes that mate with the bolts (4). The bottom of the bottom mold (3) is rotatably connected to two rows of rotating blocks (5). The bottom left and bottom right of the bottom mold (3) are slidably connected to a pair of translation plates (6). The rotating blocks (5) and the translation plates (6) are rotatably connected to a telescopic rod (7). The bottom of the bottom mold (3) is provided with a driving assembly. When the driving assembly drives the translation plates (6) to translate, the telescopic rod (7) pulls the rotating blocks (5) to rotate so that the bolts (4) leave the threaded holes. The driving assembly is provided with a detachable support rod (9). The rotating block (5) is hollow inside, and the bottom end of the bolt (4) extends into the rotating block (5); The inner wall of the rotating block (5) is provided with multiple strip-shaped portions (52) at intervals, and the bottom of the bolt (4) is provided with multiple grooves (51) that cooperate with the strip-shaped portions (52); the bolt (4) can slide up and down relative to the rotating block (5), and the rotation of the rotating block (5) will drive the bolt (4) to rotate. The drive assembly includes a support base (81), a hinge rod (82), a lifting block (83), and a cylinder (84). The bottom mold (3) has two support bases (81) slidably connected to its bottom. The two support bases (81) are respectively connected to two pairs of translation plates (6). A cylinder (84) is installed in the middle of the bottom of the bottom mold (3). The lifting block (83) is connected to the movable rod of the cylinder (84). The lifting block (83) and the support base (81) are rotatably connected by a hinge rod (82).

2. The bottom formwork support device for a steel truss floor slab according to claim 1, characterized in that, The bottom of the lifting block (83) is connected to a nut part (831), and the top of the support rod (9) is provided with a threaded groove (90).

3. A bottom formwork support device for a steel truss floor slab according to claim 2, characterized in that, The nut (831) and the threaded groove (90) cooperate to make the support rod (9) detachably connected to the lifting block (83).

4. A bottom formwork support device for a steel truss floor slab according to claim 3, characterized in that, It also includes a support base (91), a movable cylinder (92) and a threaded rod (93). The support base (91) is provided below the support rod (9), and the movable cylinder (92) is movably inserted on the support base (91). The bottom of the support rod (9) is connected to the threaded rod (93), and the movable cylinder (92) is threadedly connected to the threaded rod (93).

5. A bottom formwork support device for a steel truss floor slab according to claim 4, characterized in that, It also includes an adjusting handwheel (94), which is connected to the movable cylinder (92).

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