Pull rod drawer type outrigger device suitable for steel hanging box construction and construction method

Abstract

The invention discloses a pull rod drawer type outrigger device suitable for steel hanging box construction, a steel casing is horizontally and transversely provided with two groups of openings, the two groups of openings are vertically arranged, each group of openings comprises two openings symmetrically arranged on the wall of the steel casing, the pull rod drawer type outrigger device comprises two drawer boxes, the two drawer boxes are distributed in a cross-shaped manner, and the two drawer boxes are arranged on the wall of the steel casing. Wherein one drawer box is lapped above the other drawer box; the two drawer boxes are respectively inserted into the two groups of openings of the steel casing; each drawer can be inserted into a drawer box in a sliding mode, and sliding blocks are arranged on the upper surface and the lower surface of each drawer respectively. The cantilever beam is installed in advance while the advantages of two pull rod forms are comprehensively utilized, the situation that key lines are occupied by post installation of the cantilever beam is avoided, the construction period is shortened, and operation is convenient.

Description

Technical Field

[0001] The present invention relates to the field of cantilever beams suitable for steel hanging box construction, and more specifically, to a drawer type cantilever beam device and a construction method suitable for steel hanging box construction. Background Art

[0002] The steel hanging box is used as a water retaining and formwork structure during the construction of the foundation. During construction, the bottom concrete needs to be poured. Before pouring the bottom concrete, tie rods need to be installed to connect the bottom plate with the steel casing, and the bottom concrete load is transferred from the tie rods to the steel casing. Traditional tie rods are in two forms: steel and fine-rolled threaded steel bars; the upper support connecting the tie rods and the steel casing usually has two forms: T-shaped plates and cantilever beams. When the tie rods are made of steel, after the bottom concrete is poured, the system can be converted, and the steel near the bottom top elevation can be welded to the steel casing to reduce the risk of the bottom concrete falling off as a whole. When the tie rods are made of fine-rolled threaded steel bars, pre-tension can be applied during the installation of the tie rods to make the tie rods more evenly stressed. When the upper support of the tie rods is made of T-shaped plates, the on-site welding work is large; when the upper support of the tie rods is made of cantilever beams, the cantilever beams need to be placed on the top of the steel casing, and the cantilever beams need to be installed after the steel hanging box is lowered into place, occupying key lines. Summary of the invention

[0003] In order to achieve these purposes and other advantages according to the present invention, a preferred embodiment of the present invention provides a drawer type cantilever beam device suitable for steel hanging box construction, characterized in that two groups of openings are horizontally opened on the steel casing, and the two groups of openings are vertically arranged, and each group of openings includes two openings symmetrically opened on the wall of the steel casing, and the drawer type cantilever beam device includes:

[0004] There are two drawer boxes, which are cross-distributed, one of which is overlapped on top of the other; the two drawer boxes are respectively inserted into the two groups of openings of the steel casing;

[0005] Each drawer can be slidably inserted into a drawer box, and the middle and tail parts of the drawer are respectively provided with sliding blocks.

[0006] According to a preferred embodiment of the present invention, the straight line formed by the two openings of each group of openings passes through the axis of the steel casing.

[0007] According to a preferred embodiment of the present invention, a U-shaped notch is provided on the top surface of the drawer box, and a limiting block is welded on the top surface of the end of the drawer to prevent the drawer from falling off from the drawer box.

[0008] According to a preferred embodiment of the present invention, it also includes an upper pull rod, a bottom plate main beam, a lower pull rod and a cross beam, the cross beam and the bottom plate main beam are arranged in parallel, and the cross beam is located above the bottom plate main beam, the lower pull rod is connected between the cross beam and the bottom plate main beam, one end of the upper pull rod is connected to the cross beam, and the other end is detachably connected to the drawer, and multiple bottom plate main beams are assembled into a ring with a hollow interior.

[0009] According to a preferred embodiment of the present invention, two annular sliding blocks are welded on the outer surface of the drawer, which are respectively arranged at the tail of the drawer and at the position where the drawer contacts the steel casing when the drawer is pulled out into place.

[0010] According to a preferred embodiment of the present invention, a limit slot is further provided at one end of the drawer that slides out of the drawer box.

[0011] On the other hand, a preferred embodiment of the present invention provides a construction method of a drawer type cantilever beam device suitable for steel hanging box construction, comprising the following steps:

[0012] S1. Two groups of openings are set on the steel casing, and two drawer boxes are respectively inserted into the two groups of openings, and the drawer boxes and the steel casing are welded and fixed;

[0013] S2, installing the drawer in the drawer box, and at this time the drawer is placed in the drawer box and is in a retracted state;

[0014] S3. Temporarily fix the upper pull rod in the steel hanging box;

[0015] S4. Lift the steel hoisting box and lower it. The hollow interior of the bottom plate main beam passes through the steel casing and the steel casing is set inside.

[0016] S5. Wait for the steel hanging box to be lowered to the preset position, pull out the drawer box, install the upper pull rod on the drawer, and install the limit plate in the limit card slot;

[0017] S6. Install the blocking plate;

[0018] S7. Pour bottom sealing concrete in the space between the bottom plate, the steel hanging box wall and the steel casing;

[0019] S8. After the concrete hardens to the standard, drain the water in the steel hanging box, weld the lower tie rod to the steel casing firmly, complete the system conversion, remove the upper tie rod and beam, and cut off the steel casing.

[0020] According to a preferred embodiment of the present invention, in S5, after the upper pull rod is installed on the drawer, a pre-tensioning force needs to be applied to the upper pull rod for tightening.

[0021] The present invention has at least the following beneficial effects:

[0022] (1) The pull-rod drawer-type cantilever beam device and construction method proposed in the present invention not only comprehensively utilizes the advantages of the two pull-rod forms, but also installs the cantilever beam in advance, thus avoiding the occupation of key lines after the cantilever beam is installed, saving construction time, and being easy to operate.

[0023] (2) The drawer-type cantilever beam device and construction method proposed in the present invention are provided with two annular sliders on the drawer, which reduce the contact area between the drawer and the drawer box, reduce the finishing range of the drawer and the drawer box, and make the force more specific. At the same time, the lever principle is used to make the structure more reasonably stressed and reduce the amount of steel used.

[0024] Other advantages, objectives and features of the present invention will be embodied in part through the following description, and in part will be understood by those skilled in the art through study and practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a construction schematic diagram of the pull rod drawer type cantilever beam device in the present invention.

[0026] Figure 2 It is a schematic diagram of the connection cross section of the bottom plate main beam and the lower pull rod in the present invention. DETAILED DESCRIPTION

[0027] The present invention is further described in detail below in conjunction with the accompanying drawings so that those skilled in the art can implement the invention with reference to the description.

[0028] The following description is used to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are only examples, and those skilled in the art can think of other obvious variations. The basic principles of the present invention defined in the following description can be applied to other embodiments, variations, improvements, equivalents, and other technical solutions that do not deviate from the spirit and scope of the present invention.

[0029] Those skilled in the art should understand that, in the disclosure of the present invention, the orientation or position relationship indicated by the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc. are based on the orientation or position relationship shown in the drawings, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, the above terms should not be understood as limiting the present invention.

[0030] It is to be understood that the term "one" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element may be one, while in another embodiment, the number of the element may be multiple, and the term "one" should not be understood as a limitation on the quantity.

[0031] like Figure 1 As shown, a preferred embodiment of the present invention provides a drawer type cantilever beam device suitable for steel hanging box construction, wherein two groups of openings are horizontally opened on the steel casing 1, and the two groups of openings are vertically arranged, and each group of openings includes two openings symmetrically opened on the wall of the steel casing 1, and the drawer type cantilever beam device includes:

[0032] There are two drawer boxes 2, which are cross-distributed, with one drawer box 2 overlapping the other drawer box 2; the two drawer boxes 2 are respectively inserted into the two groups of openings of the steel casing 1; the straight line formed by the two openings of each group of openings passes through the axis of the steel casing 1.

[0033] Each drawer 3 can be slidably inserted into a drawer box 2 , and two sliders 4 are provided on the outer surface of the drawer 3 .

[0034] The pull rod drawer type cantilever beam device also includes an upper pull rod 6, a bottom plate main beam 7, a lower pull rod 8 and a cross beam 9. The cross beam 9 and the bottom plate main beam 7 are arranged in parallel, and the cross beam 9 is located above the bottom plate main beam 7. The lower pull rod 8 is connected between the cross beam 9 and the bottom plate main beam 7. One end of the upper pull rod 6 is connected to the cross beam, and the other end is detachably connected to the drawer 3. Multiple bottom plate main beams are assembled into a ring with a hollow interior.

[0035] In the above technical solution, the drawer box adopts square steel tube, and the two drawer boxes are arranged in a cross shape. The outer diameter of the drawer is slightly smaller than the inner diameter of the drawer box, which makes it easy to insert the drawer into the drawer box. Sliders are welded on the upper and lower panels of the drawer, which ensures that the drawer slides in the drawer box without separating. At the same time, the contact points and friction areas are reduced, making the force application points clearer, realizing the force transmission effect of the lever, making the structural force more reasonable, and the structural design lighter.

[0036] The upper pull rod 6 is made of threaded steel bars, which is convenient for applying pre-tension during the later installation of the pull rod, so that the force on the pull rod is more balanced.

[0037] The lower tie rod 8 is welded to the bottom plate main beam 7 by using section steel; the cross beam 9 is made of section steel, connected to the lower tie rod 8 and also serves as the base of the upper tie rod 6.

[0038] According to a preferred embodiment of the present invention, a U-shaped groove is provided on the upper surface of the drawer box, and a limit stopper 5 is provided on the upper surface of the tail of the drawer, and the limit stopper 5 is placed in the U-shaped groove to prevent the drawer 3 from falling off the drawer box 2. A stopper 12 is also provided at one end of the drawer that slides out of the drawer box.

[0039] According to a preferred embodiment of the present invention, two annular sliders 4 are provided on the outer surface of the drawer 3 and are arranged at intervals along the length direction of the drawer, one is provided at the contact point with the steel casing after the drawer is pulled out, and the other is provided at the tail of the drawer.

[0040] In the present embodiment, during the process of the drawer sliding back and forth along the drawer box, especially after the drawer slides out of the drawer box, since the drawer is made of square steel pipe and has a large weight, after it slides out of the drawer box, the slid-out part will be suspended in the air. Under the action of gravity, the suspended part will inevitably tilt downward, and the other end will be lifted upward, which will cause uneven force on the drawer box locally, which will cause damage to the drawer box over a long period of time. Therefore, two sets of annular sliders 4 are provided here. During this process, the slider can act as a lever to maximize the force arm of the force transmission fulcrum in the drawer, thereby minimizing the force, playing a moving balancing role on the tilting of the drawer, and reducing the damage to the drawer box caused by unclear and uneven force.

[0041] On the other hand, a preferred embodiment of the present invention provides a construction method of a drawer type cantilever beam device suitable for steel hanging box construction, comprising the following steps:

[0042] S1. Two groups of openings are set on the steel casing 1, and two drawer boxes 2 are respectively inserted into the two groups of openings, and the drawer boxes and the steel casing are welded and fixed;

[0043] S2, installing the drawer 3 in the drawer box 2, and at this time the drawer 3 is placed in the drawer box 2 and is in a retracted state;

[0044] A U-shaped groove is provided on the upper surface of the drawer box 2, and a limit stopper 5 is provided on the upper surface of the tail of the drawer. The limit stopper 5 is placed in the U-shaped groove to prevent the drawer 3 from falling off from the drawer box 2;

[0045] S3. Temporarily fix the upper pull rod in the steel hanging box;

[0046] S4. Lift the steel hoisting box and lower it. The hollow interior of the bottom plate main beam passes through the steel casing and the steel casing is set inside.

[0047] S5. After the steel hanging box is lowered to the preset position, pull out the drawer box, fix the upper pull rod vertically on the drawer, and stuff a steel plate into the limit slot 5 at the end of the drawer 3 to prevent the upper pull rod from falling off; in S6, after the upper pull rod is installed on the drawer, a pre-tensioning force needs to be applied to the upper pull rod to tighten it.

[0048] S6. Install the blocking plate;

[0049] Pouring bottom sealing concrete 11 in the space between the bottom plate and the connecting plate and the steel casing;

[0050] S7. After the concrete hardens to the standard, drain the water in the steel hanging box, use the connecting plate 10 to weld the lower pull rod to the steel casing firmly, complete the system conversion, remove the upper pull rod and beam, and cut off the steel casing.

[0051] Although the embodiments of the present invention have been disclosed as above, they are not limited to the applications listed in the specification and the implementation modes, and they can be fully applied to various fields suitable for the present invention. For those familiar with the art, additional modifications can be easily implemented. Therefore, without departing from the general concept defined by the claims and the scope of equivalents, the present invention is not limited to the specific details and the illustrations shown and described herein.

Claims

1. A drawer-type cantilever beam device suitable for steel hanging box construction, characterized in that: The steel casing is provided with two groups of openings horizontally and transversely, and the two groups of openings are arranged vertically, and each group of openings includes two openings symmetrically opened on the wall of the steel casing. The pull rod drawer type cantilever beam device includes: There are two drawer boxes, which are cross-distributed, one of which is overlapped on top of the other; the two drawer boxes are respectively inserted into the two groups of openings of the steel casing; Each drawer can be slidably inserted into a drawer box, and the middle and tail parts of the drawer are respectively provided with sliding blocks.

2. The drawer type cantilever beam device suitable for steel hanging box construction according to claim 1 is characterized in that: The straight line formed by the two openings of each group of openings passes through the axis of the steel casing.

3. The drawer type cantilever beam device suitable for steel hanging box construction according to claim 1 is characterized in that: A U-shaped notch is provided on the top surface of the drawer box, and a limiting block is welded on the top surface of the end of the drawer to prevent the drawer from falling off the drawer box.

4. The drawer type cantilever beam device suitable for steel hanging box construction according to claim 1 is characterized in that: It also includes an upper pull rod, a bottom plate main beam, a lower pull rod and a cross beam. The cross beam and the bottom plate main beam are arranged in parallel, and the cross beam is located above the bottom plate main beam. The lower pull rod is connected between the cross beam and the bottom plate main beam. One end of the upper pull rod is connected to the cross beam, and the other end is detachably connected to the drawer. Multiple bottom plate main beams are assembled into a ring with a hollow interior.

5. The drawer-type cantilever beam device suitable for steel hanging box construction according to claim 1 is characterized in that: Two annular sliding blocks are welded on the outer surface of the drawer, which are respectively arranged at the tail of the drawer and at the position where the drawer contacts the steel casing when the drawer is pulled out into place.

6. The drawer-type cantilever beam device suitable for steel hanging box construction according to claim 1 is characterized in that: A limit slot is also provided at one end of the drawer that slides out of the drawer box.

7. The construction method of the drawer type cantilever beam device suitable for steel hanging box construction according to any one of claims 1 to 6, characterized in that: The following steps are involved: S1. Two groups of openings are set on the steel casing, and two drawer boxes are respectively inserted into the two groups of openings, and the drawer boxes and the steel casing are welded and fixed; S2, installing the drawer in the drawer box, and at this time the drawer is placed in the drawer box and is in a retracted state; S3. Temporarily fix the upper pull rod in the steel hanging box; S4. Lift the steel hoisting box and lower it. The hollow interior of the bottom plate main beam passes through the steel casing and the steel casing is set inside. S5. Wait for the steel hanging box to be lowered to the preset position, pull out the drawer box, install the upper pull rod on the drawer, and install the limit plate in the limit card slot; S6. Install the blocking plate; S7. Pour bottom sealing concrete in the space between the bottom plate, the steel hanging box wall and the steel casing; S8. After the concrete hardens to the standard, drain the water in the steel hanging box, weld the lower tie rod to the steel casing firmly, complete the system conversion, remove the upper tie rod and beam, and cut off the steel casing.

8. The drawer-type cantilever beam device suitable for steel hanging box construction according to claim 7 is characterized in that: In S5, after the upper pull rod is installed on the drawer, a pre-tensioning force needs to be applied to the upper pull rod to tighten it.

Images