Light filling wall site round steel crawling ladder pre-burying one-time forming device
By using enclosures and U-shaped round steel ladder pre-embedded devices at the location of lightweight infill walls, the problem of φ20 round steel ladders being unable to be pre-embedded in lightweight masonry structures was solved, achieving the effects of simplified construction, reduced costs, and improved safety.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHAANXI HUASHAN CONSTR
- Filing Date
- 2025-06-19
- Publication Date
- 2026-07-03
AI Technical Summary
When installing φ20 round steel ladders in lightweight infill wall locations, existing technologies present problems such as complex construction and high costs. Furthermore, φ20 round steel cannot be directly installed in the mortar joints of the masonry; it must be flattened or grooved, which poses a safety hazard.
A one-time molding device for pre-embedded round steel ladders in lightweight infill wall sections is adopted, including the enclosure and U-shaped round steel ladders. The U-shaped round steel ladders and concrete are pre-formed in one step by pouring concrete inside the enclosure, simplifying the construction process.
It enables the one-time molding of round steel ladders in lightweight masonry structures, reducing construction difficulty and cost, improving safety, reducing labor intensity, and making the structure simple and easy to operate.
Smart Images

Figure CN224446353U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of building construction technology, specifically to a one-time forming device for pre-embedding round steel ladders in lightweight infill wall sections. Background Technology
[0002] In the field of building construction, non-accessible roofs are typically located on the top floors of residential buildings, office buildings, and other structures. Their main functions are to protect the building structure, prevent wind and rain erosion, and meet basic waterproofing, insulation, and thermal requirements. However, as buildings may experience various problems over long-term use, such as aging of the waterproofing layer or failure of the insulation layer, roof inspection and maintenance are necessary. Therefore, even non-accessible roofs usually have a manhole with a ladder for access to the roof level, facilitating maintenance work. Ladders play a crucial role in buildings, serving not only as passageways for personnel to enter and exit the roof but also as escape routes in emergencies. In some architectural designs, ladders are installed in ordinary lightweight infill walls, using φ20 round steel ladders embedded in the masonry. However, considering that the thickness of the horizontal mortar joints in the masonry structure is only 10-15mm, the φ20 round steel cannot be directly installed in the mortar joints. The φ20 round steel must be flattened or grooved into the masonry block, and the masonry block material must be load-bearing and not lightweight, otherwise the installation of the ladder will pose a safety hazard. If the steel ladder is anchored after installation, the process is complex and the cost is relatively high. Therefore, it is necessary to find an economical and convenient method for installing round steel ladders. Summary of the Invention
[0003] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a one-time forming device for pre-embedding round steel ladders in lightweight infill wall parts, so as to solve the problem that the existing technology lacks a simple construction method and has high cost.
[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: a one-time molding device for pre-embedded round steel ladder in a lightweight infill wall, including a fence, wherein the bottom of the fence is closed and the top is open.
[0005] It also includes a U-shaped round steel ladder installed on one side of the enclosure, the U-shaped round steel ladder extending into the enclosure and arranged horizontally with the bottom of the enclosure.
[0006] This utility model also has the following technical features:
[0007] The enclosure includes a first irregularly shaped enclosure and a second irregularly shaped enclosure installed on top of the first irregularly shaped enclosure, wherein the first irregularly shaped enclosure and the second irregularly shaped enclosure are connected by a flange.
[0008] The first irregular-shaped fence is closed at the bottom, and the second irregular-shaped fence is open at both ends. The second irregular-shaped fence is installed at the open end of the first irregular-shaped fence.
[0009] The first irregular-shaped enclosure is formed by a first upper irregular-shaped enclosure, a second upper irregular-shaped enclosure, and a base plate.
[0010] The first upper irregular-shaped enclosure includes a first left irregular-shaped enclosure, a first middle irregular-shaped enclosure, and a first right irregular-shaped enclosure connected in sequence.
[0011] The first irregular-shaped fence includes a side panel and end panels vertically connected to both sides of the same side panel. The first left irregular-shaped fence includes two vertically connected baffles, and the cross-section of the first left irregular-shaped fence is L-shaped. The first right irregular-shaped fence includes two vertically connected baffles, and the cross-section of the first right irregular-shaped fence is L-shaped.
[0012] The end plate on one side of the first irregular-shaped fence is vertically connected to the first left irregular-shaped fence, and the end plate on the other side of the first irregular-shaped fence is vertically connected to the first right irregular-shaped fence.
[0013] The second upper irregular-shaped enclosure has the same structure as the first upper irregular-shaped enclosure and is arranged symmetrically, forming a columnar cavity together with the first upper irregular-shaped enclosure.
[0014] The second irregular-shaped enclosure is formed by the first lower irregular-shaped enclosure and the second lower irregular-shaped enclosure.
[0015] The structures of the first lower irregular-shaped enclosure and the second lower irregular-shaped enclosure are the same as those of the first upper irregular-shaped enclosure and are arranged symmetrically. The first lower irregular-shaped enclosure and the second lower irregular-shaped enclosure together form a columnar cavity.
[0016] The first upper irregular-shaped fence is connected to the first lower irregular-shaped fence, and the second upper irregular-shaped fence is connected to the second lower irregular-shaped fence.
[0017] The side panels of the second upper irregular-shaped enclosure and the side panels of the second lower irregular-shaped enclosure are provided with mounting holes, and the U-shaped round steel ladder extends into the enclosure through the mounting holes.
[0018] It also includes multiple conical barrels mounted on the base plate.
[0019] The conical barrel is a hollow frustum shape, with the larger diameter end mounted on the base plate, and the height of the conical barrel is greater than the height of the enclosure.
[0020] It also includes protective rings, the number of which is the same as the number of conical barrels.
[0021] The protective ring is fitted onto the outer side of the smaller diameter end of the conical barrel, and the inner diameter of the protective ring is larger than the outer diameter of the smaller diameter end of the conical barrel.
[0022] The protective ring is a cylindrical shape with open ends. The top of the protective ring is flush with the top of the conical barrel, and the bottom of the protective ring is lower than the upper edge of the enclosure.
[0023] Ear plates are also installed on the upper edges of the first and second upper irregularly shaped enclosures, and the number of ear plates is twice the number of protective rings.
[0024] A connecting rod is connected to the opposite side of the protective ring, and the connecting rod is detachably connected to the ear plate.
[0025] Compared with the prior art, this utility model has the following technical effects:
[0026] (I) The lightweight infill wall part pre-embedded round steel ladder one-time molding device provided by this utility model fixes the U-shaped round steel ladder between the first irregular fence and the second irregular fence, and pours concrete in the fence to pre-form the U-shaped round steel ladder and concrete in one time. During construction, this steel ladder pre-cast block is directly masonry with the lightweight masonry structure, which solves the construction problem that the round steel ladder cannot be pre-embedded in the lightweight masonry structure.
[0027] (II) The lightweight infill wall portion round steel ladder pre-embedded one-time forming device provided by this utility model effectively reduces the self-weight of the precast block through the conical barrel set in the middle, and the upper and lower precast blocks are interlocked and connected through the set protective ring, which reduces the labor intensity of construction work and strengthens the overall load-bearing capacity of the precast block.
[0028] (III) The lightweight infill wall portion round steel ladder pre-embedded one-time forming device provided by this utility model has a simple structure, is easy to operate, safe and reliable, and has strong adaptability. Attached Figure Description
[0029] Figure 1 This is a top view of the pre-embedded one-time forming device for the round steel ladder in the lightweight infill wall section of this utility model.
[0030] Figure 2 This is a schematic diagram of the structure of the first irregular-shaped enclosure of this utility model.
[0031] Figure 3 This is a schematic diagram of the right-side structure of this utility model.
[0032] Figure 4 This is a schematic diagram of the connection relationship of the protective ring of this utility model.
[0033] Figure 5 This is a schematic diagram of the ear plate of this utility model.
[0034] Figure 6 This is a schematic diagram illustrating a specific application of the present invention.
[0035] The meanings of the labels in the attached diagram are as follows:
[0036] 1-Enclosure, 2-U-shaped round steel ladder, 3-Conical barrel, 4-Guard ring, 5-Ear plate, 6-Connecting rod.
[0037] 1-1-First irregular-shaped fence, 1-2-Second irregular-shaped fence.
[0038] 1-1-1-First upper irregular-shaped fence, 1-1-2-Second upper irregular-shaped fence, 1-1-3-Base plate.
[0039] 1-2-1-First irregular-shaped fencing, 1-2-2-Second irregular-shaped fencing.
[0040] 1-1-1-1-First left irregular fence, 1-1-1-2-First middle irregular fence, 1-1-1-3-First right irregular fence.
[0041] The specific content of this utility model will be further explained in detail below with reference to the embodiments. Detailed Implementation
[0042] Unless otherwise specified, all components in this invention are made from components known in the prior art.
[0043] The following are specific embodiments of the present invention. It should be noted that the present invention is not limited to the following specific embodiments. All equivalent modifications made based on the technical solutions of this application fall within the protection scope of the present invention.
[0044] Example 1:
[0045] This embodiment provides a one-time molding device for pre-embedding round steel ladders in lightweight infill wall sections, such as... Figure 1 As shown, it includes a fence 1, which is closed at the bottom and open at the top.
[0046] It also includes a U-shaped round steel ladder 2 installed on one side of the enclosure 1, wherein the U-shaped round steel ladder 2 extends into the enclosure 1 and is arranged horizontally with the bottom of the enclosure 1.
[0047] This embodiment provides a one-time molding device for pre-embedded round steel ladders in lightweight infill wall sections. The U-shaped round steel ladder 2 and the concrete inside the enclosure 1 are prefabricated into an integral block. During installation, this prefabricated block can be laid in the same way as normal blocks. This solves the construction problem that round steel ladders on roofs cannot be installed in lightweight infill wall sections, simplifies the construction process, improves ladder safety, effectively reduces construction costs, and reduces the labor intensity of workers, saving time, effort and money.
[0048] As a preferred embodiment:
[0049] like Figure 2 As shown, the enclosure 1 includes a first irregular enclosure 1-1 and a second irregular enclosure 1-2 installed on top of the first irregular enclosure 1-1, and the first irregular enclosure 1-1 and the second irregular enclosure 1-2 are connected by a flange.
[0050] The first irregular-shaped fence 1-1 is closed at the bottom, and the second irregular-shaped fence 1-2 is open at both ends. The second irregular-shaped fence 1-2 is installed at the open end of the first irregular-shaped fence 1-1.
[0051] The flange at the connection between the first irregular-shaped fence 1-1 and the second irregular-shaped fence 1-2 is connected by eight bolts.
[0052] As a preferred embodiment:
[0053] like Figure 2 As shown, the first irregular-shaped enclosure 1-1 is formed by the first upper irregular-shaped enclosure 1-1-1, the second upper irregular-shaped enclosure 1-1-2, and the base plate 1-1-3.
[0054] The first upper irregular-shaped enclosure 1-1-1 includes a first left irregular-shaped enclosure 1-1-1-1, a first middle irregular-shaped enclosure 1-1-1-2, and a first right irregular-shaped enclosure 1-1-1-3 connected in sequence.
[0055] The first irregular-shaped enclosure 1-1-1-2 includes a side panel and end panels vertically connected to both sides of the same side panel. The first left irregular-shaped enclosure 1-1-1-1 includes two vertically connected baffles. The cross-section of the first left irregular-shaped enclosure 1-1-1-1 is L-shaped. The first right irregular-shaped enclosure 1-1-1-3 includes two vertically connected baffles. The cross-section of the first right irregular-shaped enclosure 1-1-1-3 is L-shaped.
[0056] The end plate on one side of the first irregular-shaped fence 1-1-1-2 is vertically connected to the first left irregular-shaped fence 1-1-1-1, and the end plate on the other side of the first irregular-shaped fence 1-1-1-2 is vertically connected to the first right irregular-shaped fence 1-1-1-3.
[0057] The second upper irregular-shaped enclosure 1-1-2 has the same structure as the first upper irregular-shaped enclosure 1-1-1 and is arranged symmetrically, forming a columnar cavity together with the first upper irregular-shaped enclosure 1-1-1.
[0058] The second irregular-shaped enclosure 1-2 is formed by the first lower irregular-shaped enclosure 1-2-1 and the second lower irregular-shaped enclosure 1-2-2.
[0059] The structures of the first lower irregular-shaped enclosure 1-2-1 and the second lower irregular-shaped enclosure 1-2-2 are the same as those of the first upper irregular-shaped enclosure 1-1-1 and are arranged symmetrically. The first lower irregular-shaped enclosure 1-2-1 and the second lower irregular-shaped enclosure 1-2-2 enclose and form a columnar cavity.
[0060] The first upper irregular-shaped fence 1-1-1 is connected to the first lower irregular-shaped fence 1-2-1, and the second upper irregular-shaped fence 1-1-2 is connected to the second lower irregular-shaped fence 1-2-2.
[0061] The first irregularly shaped enclosure 1-1, the second irregularly shaped enclosure 1-2, and the base plate 1-1-3, which are symmetrically arranged, are all made of 3mm thick stainless steel.
[0062] The first upper irregular-shaped enclosure 1-1-1, the second upper irregular-shaped enclosure 1-1-2, the first lower irregular-shaped enclosure 1-2-1, the second lower irregular-shaped enclosure 1-2-2, and the base plate 1-1-3 are all irregular-shaped. The overall length of enclosure 1 is 600mm, which is the same as the length of a lightweight autoclaved aerated concrete block. The short side of enclosure 1 is convex, with a protrusion length of 60-80mm, so as to interlock with the subsequent lightweight masonry.
[0063] As a preferred embodiment:
[0064] Mounting holes are provided at the connection between the side plates of the second upper irregular fence 1-1-2 and the side plates of the second lower irregular fence 1-2-2. The U-shaped round steel ladder 2 extends into the fence 1 through the mounting holes.
[0065] Two φ20 mounting holes are drilled at the horizontal connection between the side plates of the second upper irregular fence 1-1-2 and the side plates of the second lower irregular fence 1-2-2. The two mounting holes are 350mm apart and 125mm from the short side of fence 1, so that the U-shaped round steel ladder 2 can be smoothly inserted and installed.
[0066] As a preferred embodiment:
[0067] like Figure 3 As shown, it also includes multiple conical barrels 3 installed on the base plate 1-1-3.
[0068] The conical barrel 3 is a hollow frustum shape, with the larger diameter end mounted on the base plate 1-1-3. The height of the conical barrel 3 is greater than the height of the enclosure 1. The conical barrel 3 is fixed to the base plate 1-1-3 by welding.
[0069] The conical barrel 3 has an upper diameter of 50mm and a lower diameter of 90mm. The upper diameter should not exceed 1 / 3 of the width of the device, and the lower diameter should not exceed 2 / 3 of the width of the device. The top of the conical barrel 3 is 120-30mm higher than the enclosure.
[0070] As a preferred embodiment:
[0071] like Figure 4 As shown, it also includes a protective ring 4, and the number of protective rings 4 is the same as the number of conical barrels 3.
[0072] The protective ring 4 is fitted onto the outer side of the smaller diameter end of the conical barrel 3, and the inner diameter of the protective ring 4 is larger than the outer diameter of the smaller diameter end of the conical barrel 3.
[0073] The protective ring 4 is a cylindrical shape with open ends. The top of the protective ring 4 is flush with the top of the conical barrel 3, and the bottom of the protective ring 4 is lower than the upper edge of the enclosure 1.
[0074] As a preferred embodiment:
[0075] like Figures 4-5 As shown, protective rings 4 are also installed on the upper edge of the first upper irregular enclosure 1-1-1 and the upper edge of the second upper irregular enclosure 1-1-2, and the number of ear plates 5 is twice the number of protective rings 4.
[0076] A connecting rod 6 is connected to the opposite side of the protective ring 4, and the connecting rod 6 is detachably connected to the ear plate 5. Figure 4 Only one side of the connection is shown; the other side is not shown.
[0077] The relative positions of the upper and lower precast blocks are defined by setting the protective ring 4.
[0078] The protective ring 4 and the first upper irregular enclosure 1-1-1 are connected by welding at one end and threaded connection at the other end; the ear plate 5 is semi-circular with a diameter of 40-60mm, with a φ10 bolt hole in the middle. One end of an M10 long bolt is welded to the protective ring 4, and the other end is inserted into the bolt hole for fixation.
[0079] The specific working process of this utility model:
[0080] like Figure 6 As shown, first assemble the enclosure 1. After assembling the first irregular enclosure 1-1 and the second irregular enclosure 1-2, insert the U-shaped round steel ladder 2. Then pour the pre-mixed concrete into the enclosure 1 and vibrate it. When the concrete strength reaches 1.2 MPa and the edges and corners of the precast blocks are not damaged during removal, loosen all the bolts on the enclosure 1 and remove all the components of the first irregular enclosure 1-1 and the second irregular enclosure 1-2. Then the precast blocks are put into the curing stage.
[0081] When the masonry construction reaches the position of the steel ladder on the roof, the end of the lightweight masonry block that connects with the precast block is cut into a groove. The groove depth and width are reduced by 10mm compared to the groove size of the precast block, so that the precast block and the lightweight masonry structure can be interlocked.
[0082] This method solves the construction problem of roof steel ladders not being able to be installed in lightweight infill walls, simplifies the construction process, improves ladder safety, effectively reduces construction costs, and reduces the labor intensity of workers, saving time, effort, and money.
[0083] The above technical solutions are only preferred embodiments of this utility model, but the protection scope of this utility model is not limited thereto. Any changes or substitutions that can be conceived by those skilled in the art without creative effort within the technical scope disclosed in this utility model are covered within the protection scope of this utility model.
Claims
1. A light filler wall site round steel crawling ladder pre-buried one-time forming device, characterized in that, Includes a fence (1), wherein the bottom of the fence (1) is closed and the top is open; It also includes a U-shaped round steel ladder (2) installed on one side of the enclosure (1), the U-shaped round steel ladder (2) extending into the enclosure (1) and arranged horizontally with the bottom of the enclosure (1).
2. The light filler wall site round steel crawling ladder pre-burying one-time forming device according to claim 1, characterized in that, The enclosure (1) includes a first irregular enclosure (1-1) and a second irregular enclosure (1-2) installed on top of the first irregular enclosure (1-1), wherein the first irregular enclosure (1-1) and the second irregular enclosure (1-2) are connected by a flange. The first irregular-shaped fence (1-1) is closed at the bottom, and the second irregular-shaped fence (1-2) is open at both ends. The second irregular-shaped fence (1-2) is installed at the open end of the first irregular-shaped fence (1-1).
3. The light-weight infill wall site round steel cat ladder pre-buried one-time forming device according to claim 2, characterized in that, The first irregular-shaped enclosure (1-1) is formed by the first upper irregular-shaped enclosure (1-1-1), the second upper irregular-shaped enclosure (1-1-2), and the base plate (1-1-3); The first upper irregular-shaped enclosure (1-1-1) includes a first left irregular-shaped enclosure (1-1-1-1), a first middle irregular-shaped enclosure (1-1-1-2), and a first right irregular-shaped enclosure (1-1-1-3) connected in sequence; The first irregular-shaped enclosure (1-1-1-2) includes a side panel and end panels vertically connected to both sides of the same side panel. The first left irregular-shaped enclosure (1-1-1-1) includes two vertically connected baffles. The cross-section of the first left irregular-shaped enclosure (1-1-1-1) is L-shaped. The first right irregular-shaped enclosure (1-1-1-3) includes two vertically connected baffles. The cross-section of the first right irregular-shaped enclosure (1-1-1-3) is L-shaped. The end plate on one side of the first irregular-shaped fence (1-1-1-2) is vertically connected to the first left irregular-shaped fence (1-1-1-1), and the end plate on the other side of the first irregular-shaped fence (1-1-1-2) is vertically connected to the first right irregular-shaped fence (1-1-1-3). The second upper irregular-shaped enclosure (1-1-2) has the same structure as the first upper irregular-shaped enclosure (1-1-1) and is arranged symmetrically, forming a columnar cavity with the first upper irregular-shaped enclosure (1-1-1); The second irregular-shaped enclosure (1-2) is formed by the first lower irregular-shaped enclosure (1-2-1) and the second lower irregular-shaped enclosure (1-2-2); The structure of the first lower irregular enclosure (1-2-1) and the second lower irregular enclosure (1-2-2) is the same as that of the first upper irregular enclosure (1-1-1) and they are arranged symmetrically. The first lower irregular enclosure (1-2-1) and the second lower irregular enclosure (1-2-2) enclose and form a columnar cavity. The first upper irregular-shaped fence (1-1-1) is connected to the first lower irregular-shaped fence (1-2-1), and the second upper irregular-shaped fence (1-1-2) is connected to the second lower irregular-shaped fence (1-2-2).
4. The light-weight infill wall site round steel cat ladder pre-buried one-time forming device according to claim 3, characterized in that, The side plate of the second upper irregular fence (1-1-2) and the side plate of the second lower irregular fence (1-2-2) are provided with mounting holes, and the U-shaped round steel ladder (2) extends into the fence (1) through the mounting holes.
5. The one-time forming device for pre-embedding round steel ladders in lightweight infill wall sections as described in claim 2, characterized in that, It also includes multiple conical barrels (3) installed on the base plate (1-1-3); The conical barrel (3) is a hollow frustum shape, with the larger diameter end installed on the base plate (1-1-3). The height of the conical barrel (3) is greater than the height of the enclosure (1).
6. The light-weight infill wall site round steel cat ladder pre-buried one-time forming device according to claim 5, characterized in that, It also includes protective rings (4), the number of which is the same as the number of conical barrels (3); The protective ring (4) is fitted on the outside of the smaller diameter end of the conical barrel (3), and the inner diameter of the protective ring (4) is larger than the outer diameter of the smaller diameter end of the conical barrel (3). The protective ring (4) is a cylindrical shape with open ends. The top of the protective ring (4) is flush with the top of the conical barrel (3), and the bottom of the protective ring (4) is lower than the upper edge of the enclosure (1).
7. The one-time forming device for pre-embedding round steel ladders in lightweight infill wall sections as described in claim 6, characterized in that, The upper edge of the first upper irregular enclosure (1-1-1) and the upper edge of the second upper irregular enclosure (1-1-2) are also equipped with protective rings (4), and the number of ear plates (5) is twice the number of protective rings (4); A connecting rod (6) is connected to the opposite side of the protective ring (4), and the connecting rod (6) is detachably connected to the ear plate (5).