Steel structure roof grading unloading device

Abstract

The utility model discloses steel structure roof cover grading unloading device, including base, spacing column subassembly, support column subassembly and support platform, the middle part of base is provided with jacking device support seat and jacking device, spacing column subassembly includes two spacing columns of being arranged in the both sides of jacking device along longitudinal direction, support column subassembly includes two support columns of being arranged in the both sides of jacking device along transverse direction, support platform has the first crossbeam of being arranged along longitudinal direction and the second crossbeam of being arranged along transverse direction, and the both ends of second crossbeam can correspond and abut on two support column upper portions, and jacking device can push support platform and move upwards and lift relative to base, through adopt above -mentioned's structure, realized the grading unloading of steel structure roof cover, can also solve the technical problem of vertical deformation and horizontal displacement that steel structure roof cover generates in the unloading process.

Description

Technical Field

[0001] This utility model relates to the field of building construction technology, and in particular to a graded unloading device for steel structure roofs. Background Technology

[0002] With social development and technological progress, the construction industry is developing rapidly, and various new structural systems and forms are constantly being used in construction. This is especially evident in large-scale stadium projects, which are showing a clear trend of larger, newer, and more diverse development, driving the continuous development of construction technology.

[0003] In a large stadium project, the steel roof structure is saddle-shaped, employing a structural system combining tubular trusses and space frames. It is supported by 36 steel columns, with a maximum cantilever length of 45 meters and a total weight of approximately 16,000 tons. The construction phase utilized a "ground assembly, segmented hoisting" method, aided by the erection of multiple support frames. After the steel roof structure was completed, unloading was required to transition it from a frame-supported state to a structurally loaded state. Theoretical analysis indicated that the maximum downward deflection during unloading was 510 mm, and the maximum horizontal displacement was 90 mm. Overcoming both vertical deformation and horizontal displacement during unloading presented immense challenges and difficulties for the project. Utility Model Content

[0004] This utility model aims to at least partially solve one of the problems in the prior art. To this end, the first aspect of this utility model proposes a graded unloading device for steel structure roofs, enabling the steel structure roof to move downwards and be unloaded in stages, thus helping to solve the technical problems of vertical deformation and horizontal displacement of the steel structure roof during the unloading process.

[0005] According to the first aspect of this utility model, a steel structure roof tiered unloading device includes a base, a limiting column assembly, a supporting column assembly, and a support platform. A lifting device support seat is provided at the center of the upper surface of the base, and a lifting device is provided on the upper part of the lifting device support seat. The limiting column assembly includes two limiting columns disposed on the upper surface of the base, the two limiting columns being arranged longitudinally and spaced apart on both sides of the lifting device. The supporting column assembly includes two supporting columns disposed on the upper surface of the base, the two supporting columns being transversely and spaced apart on both sides of the lifting device. The support platform is located above the lifting device. The system comprises a first crossbeam arranged longitudinally and a second crossbeam arranged transversely. The first crossbeam is movably disposed between two limiting columns. The first crossbeam and the two limiting columns can cooperate with each other to restrict the support platform from moving relative to the base in the longitudinal direction. A lifting guide assembly is provided between the first crossbeam and the limiting column assembly. The lifting guide assembly is used to guide the support platform to move up and down relative to the limiting column assembly in the vertical direction. The two ends of the second crossbeam can abut against the upper parts of the two supporting columns one by one. The lifting device can push the support platform to move upward relative to the base and rise.

[0006] The graded unloading device for steel structure roofs according to this utility model has the following beneficial effects: The system comprises a lifting device support and a lifting device located at the center of the upper surface of the base. Two support columns are spaced laterally on either side of the lifting device, and two limiting columns are spaced longitudinally on either side of the lifting device. The support platform has a first crossbeam arranged longitudinally and a second crossbeam arranged laterally. The first crossbeam is movably positioned between the two limiting columns, and the two ends of the second crossbeam abut against the upper parts of the two support columns. Using this structure, when the steel structure roof unloading device is used for unloading the steel structure roof, the lifting device can push the support platform to support the steel structure roof upwards. Then, material at an unloading height above the two support columns can be removed. The lifting device then slowly unloads the material, causing the steel structure roof and support platform to slowly descend until the two ends of the second crossbeam of the support platform abut against the two support columns. The upper part of the column is then removed, and the lifting device base is detached from the lifting device support. Material at the upper part of the lifting device base is cut off to a certain unloading height. The lifting device is then fixed to the upper part of the lifted device base after the material is cut off. The lifting device can then push the support platform to support the steel structure roof to rise again. Then, material at the upper part of the two support columns is cut off to a certain unloading height. This process is repeated to achieve the staged unloading of the steel structure roof. During the unloading process, when the steel structure roof moves the support platform along the longitudinal direction due to friction, the first crossbeam and the two limiting columns cooperate to restrict the movement of the support platform relative to the base in the longitudinal direction. This prevents the support platform from shifting and does not affect the horizontal movement of the steel structure roof. Thus, the staged unloading device for the steel structure roof of this application can solve the technical problems of vertical deformation and horizontal displacement of the steel structure roof during the unloading process.

[0007] In some embodiments of this utility model, the lifting guide assembly includes a guide member and a sliding member. The guide member has a guide groove arranged in a vertical direction. One of the guide member and the sliding member is disposed at one end of the first crossbeam, and the other is disposed at one of the limiting columns. The sliding member is movably inserted into the guide groove and can move up and down along the guide groove.

[0008] In some embodiments of this utility model, the sliding member is disposed at the end of the first crossbeam, the guide member is disposed at the limiting column, and the guide member and the limiting column are an integral structure.

[0009] In some embodiments of this utility model, the number of lifting guide components is two sets, one set of lifting guide components is disposed at one end of the first crossbeam, and the other set of lifting guide components is disposed at the other end of the first crossbeam.

[0010] In some embodiments of this utility model, gap spaces are provided between both ends of the first crossbeam and the adjacent limiting columns.

[0011] In some embodiments of this utility model, a support pad is provided on the upper part of the lifting device support seat, and the lifting device is disposed on the upper part of the support pad.

[0012] In some embodiments of this utility model, a plurality of clamping plates are provided on the upper part of the support pad, and all the clamping plates are arranged around the circumference of the lifting device. All the clamping plates cooperate to support the lifting device and restrict the lifting device from tilting and swinging relative to the support pad.

[0013] In some embodiments of this utility model, the lifting end of the lifting device is provided with a lifting device pad, and the lifting device can drive the lifting device pad to move upward and fit tightly against the lower part of the supporting platform.

[0014] In some embodiments of this utility model, a lubricating layer is provided between the upper surface of the lifting pad and the lower surface of the supporting platform.

[0015] In some embodiments of this utility model, the upper surface of the support platform is provided with a bracket for supporting the workpiece, and the upper part of the bracket is provided with an arc-shaped support groove. Attached Figure Description

[0016] Figure 1 This is a structural schematic diagram of the steel structure roof graded unloading device according to certain embodiments of this utility model; Figure 2 yes Figure 1 The diagram shows the structure of the steel roof tiered unloading device after the lower support frame has been removed and the guide groove has been enlarged. Figure 3 yes Figure 1 The diagram shows the assembly structure of the base, jack support, and jack of the steel structure roof graded unloading device. Figure 4 yes Figure 2 Enlarged view of point A in the middle; Figure 5 yes Figure 1 The diagram shows a structural schematic of a steel structure roof tiered unloading device used to support the truss tubes supporting the steel structure roof. Figure 6 yes Figure 1 The diagram shows the structure of the steel structure roof graded unloading device, which supports the truss tube of the steel structure roof and the guide groove is enlarged. Figure 7 yes Figure 1The diagram shows a steel structure roof graded unloading device supporting the steel structure roof truss tube, and a structural diagram after the material of the upper part of the supporting column is cut off by an unloading height. Figure 8 yes Figure 1 The diagram shows the structure of the steel structure roof tiered unloading device after the material of one unloading height is cut off from the upper part of the supporting column, and the truss tube supporting the steel structure roof of the supporting platform descends to the upper part of the supporting column. Figure 9 yes Figure 1 The diagram shows a structural schematic of the steel structure roof graded unloading device with the lifting end of the lifting device connected to the lower part of the support platform. Figure 10 yes Figure 1 The diagram shows a steel structure roof tiered unloading device with the lower part of the jacking device suspended in the air and the upper part of the jacking device support having material of an unloading height removed. Figure 11 yes Figure 1 The diagram shows a structural schematic of a steel structure roof tiered unloading device where the upper part of the jack support is cut off by a certain unloading height of material, and the lower part of the jack is installed on the upper part of the jack support. Figure 12 yes Figure 1 The diagram shows the structure of the steel structure roof tiered unloading device after the tiered unloading of the steel structure roof is completed. Detailed Implementation

[0017] The embodiments of this implementation are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this implementation, and should not be construed as limiting this implementation.

[0018] The accompanying drawings used in this embodiment are schematic and principle-based, and are only for the purpose of facilitating and simplifying the description of this embodiment. Therefore, they should not be construed as limiting this embodiment.

[0019] In the description of this embodiment, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0020] In the description of this embodiment, unless otherwise explicitly limited, terms such as setting, installing, and connecting should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this embodiment in conjunction with the specific content of the technical solution.

[0021] Figures 1 to 4 This is a schematic diagram of one embodiment of the graded unloading device for steel structure roofs of this utility model.

[0022] Reference Figures 1 to 4 The steel structure roof tiered unloading device according to this embodiment (for ease of explanation, it will sometimes be referred to as "tiered unloading device" below) is used for tiered unloading of the steel structure roof.

[0023] Reference Figures 1 to 4 The steel structure roof grading unloading device according to certain embodiments of the first aspect of this utility model includes a base 100, a limiting column assembly, a supporting column assembly, and a supporting platform 300. In this embodiment, the base 100 is generally in the shape of a flat cube. A support frame 101 is provided at the lower part of the base 100, and a lifting device support seat 110 is provided at the middle of the upper surface of the base 100. In this embodiment, the lifting device support seat 110 is welded and fixed to the middle of the upper surface of the base 100, so that the connection between the lifting device support seat 110 and the base 100 is firm and reliable. A lifting device 120 is provided at the upper part of the lifting device support seat 110. In this embodiment, the lifting device 120 is a hydraulic cylinder, and the lifting end of the lifting device 120 is the piston rod of the hydraulic cylinder that can extend outward or retract into the hydraulic cylinder. It is understood that the lifting device 120 can also be set as a pneumatic cylinder, depending on the actual needs.

[0024] The limiting column assembly includes two limiting columns 210 disposed on the upper surface of the base 100. The two limiting columns 210 are arranged at intervals along the longitudinal direction on both sides of the lifting device 120. The lower parts of the two limiting columns 210 are welded and fixed to the base 100. The supporting column assembly includes two supporting columns 220 disposed on the upper surface of the base 100. The two supporting columns 220 are arranged at intervals along the transverse direction on both sides of the lifting device 120. The lower parts of the two supporting columns 220 are welded and fixed to the base 100. The support platform 300 is movably disposed above the base 100 and above the lifter 120. The support platform 300 has a first crossbeam 310 arranged in the longitudinal direction and a second crossbeam 320 arranged in the transverse direction. In this embodiment, the support platform 300 is cross-shaped. The first crossbeam 310 is movably disposed between two limiting columns 210. The first crossbeam 310 and the two limiting columns 210 can cooperate with each other and restrict the support platform 300 from moving relative to the base 100 in the longitudinal direction. A lifting guide assembly is provided between the first crossbeam 310 and the limiting column assembly. The lifting guide assembly is used to guide the support platform 300 to rise and fall relative to the limiting column assembly in the vertical direction. The two ends of the second crossbeam 320 can abut against the upper part of the two supporting columns 220 one by one. The lifter 120 can push the support platform 300 to move upward relative to the base 100 and rise.

[0025] A lifting support 110 and a lifting device 120 are provided at the center of the upper surface of the base 100. Two supporting columns 220 are arranged laterally on both sides of the lifting device 120, and two limiting columns 210 are arranged longitudinally on both sides of the lifting device 120. The supporting platform 300 has a first crossbeam 310 arranged longitudinally and a second crossbeam 320 arranged laterally. The first crossbeam 210 is movably disposed between the two limiting columns 210, and the second crossbeam 320... The two ends can be correspondingly abutted against the upper parts of the two supporting columns 220. By adopting the above structure, when the steel structure roof unloading device is used for unloading the steel structure roof, the lifting device 120 can push the supporting platform 300 to support the steel structure roof upwards. Then, material at one unloading height on the upper part of the two supporting columns 220 can be cut off. Then, the lifting device 120 slowly unloads and causes the steel structure roof and the supporting platform 300 to slowly descend until the two ends of the second crossbeam 320 of the supporting platform 300 are correspondingly abutted against the upper part of the two supporting columns 220. The lifting device 120 abuts against the upper part of the two supporting columns 220. Then, the base of the lifting device 120 disengages from the lifting device support 110, and the material at the upper part of the lifting device base 110 is cut off to a certain unloading height. The lifting device 120 is then fixed to the upper part of the cut-off lifting device base 110. After that, the lifting device 120 can push the support platform 300 to support the steel structure roof to rise again. Then, the material at the upper part of the two supporting columns 220 is cut off to a certain unloading height again. This operation is repeated to achieve the staged unloading of the steel structure roof. Moreover, during the unloading process, when the steel structure roof moves the support platform 300 along the longitudinal direction due to friction, the first crossbeam 310 and the two limiting columns 210 cooperate with each other to restrict the movement of the support platform 300 relative to the base 100 in the longitudinal direction. This can prevent the support platform 300 from shifting and will not affect the horizontal movement of the steel structure roof. Thus, the staged unloading device for the steel structure roof of this application can solve the technical problems of vertical deformation and horizontal displacement of the steel structure roof during the unloading process.

[0026] It should be noted that the material removed from the upper part of the two supporting columns 220 at one unloading height refers to cutting off a portion of the upper part of each of the two supporting columns 220, and the length of this removed portion of each supporting column 220 is one unloading height. Similarly, the material removed from the upper part of the jacking base 110 at one unloading height refers to cutting off a portion of the upper part of the jacking base 110, and the length of this removed portion of the jacking base 110 is one unloading height. This unloading height is related to the number of stages of unloading; the total height of the steel structure roof unloading and lowering divided by the number of stages of unloading equals one unloading height.

[0027] To better guide the lifting guide assembly to move the supporting platform 300 up and down relative to the limiting column assembly in the vertical direction, in some embodiments of this utility model, the lifting guide assembly includes a guide member 230 and a sliding member 240. The guide member 230 has a guide groove 231 arranged in the vertical direction. When the guide member 230 is located at one end of the first crossbeam 310, the sliding member 240 is located at the limiting column 210; or when the guide member 230 is located at the limiting column 210, the sliding member 240 is located at one end of the first crossbeam 310. The sliding member 240 is movably inserted into the guide groove 231 and can move up and down along the guide groove 231. By adopting the above structure, the sliding member 240 and the guide groove 231 of the guide member 230 cooperate to guide the first crossbeam 310 to move up and down along the guide groove 231, thereby causing the support platform 300 to move upward or downward relative to the limiting column assembly in the vertical direction. Moreover, due to the cooperation between the guide groove 231 and the sliding member 240, the support platform 300 can be restricted from moving horizontally in the lateral direction and deviating from the base 100.

[0028] In some embodiments of this utility model, the sliding member 240 of the lifting guide assembly is fixedly disposed at the end of the first crossbeam 310, and the guide member 230 is fixedly disposed on the limiting column 210, with the guide member 230 and the limiting column 210 being an integral structure. Specifically, the guide member 230 is part of the limiting column 210, or the guide member 230 is welded and fixed to one side of the limiting column 210. By adopting the above structure, the production and processing of the supporting platform 300 and the limiting column 210 are facilitated.

[0029] To facilitate the vertical movement of the support platform 300 relative to the limiting column assembly, in some embodiments of this invention, two sets of lifting guide components are used. One set of lifting guide components is located at one end of the first crossbeam 310, and the other set is located at the other end of the first crossbeam 310. By employing two sets of lifting guide components to simultaneously guide the support platform 300 vertically, the lifting of the support platform 300 becomes smoother, and the horizontal movement of the support platform 300 away from the base 100 in the lateral direction is better limited.

[0030] Reference Figure 1 , Figure 2 and Figure 3 and Figure 4When the supporting platform 300 supports the lowering of the steel structure roof, in order to reduce the impact on the limiting column assembly caused by the horizontal movement of the supporting platform 300 driven by the friction of the steel structure roof, in some embodiments of this utility model, a gap space 311 is provided between both ends of the first crossbeam 310 and the adjacent limiting column 210. By adopting the above structure, a gap space 311 is provided between both ends of the first crossbeam 310 of the supporting platform 300 and the adjacent limiting column 210, so that the supporting platform 300 can move a small distance back and forth relative to the two limiting columns 210 in the longitudinal direction. When the steel structure roof grading unloading device of this embodiment is used to support the grading unloading of the steel structure roof, the installation direction of the steel structure roof grading unloading device of this embodiment is first adjusted so that the longitudinal direction of the supporting platform 300 is consistent with the horizontal movement direction when supporting the steel structure roof for unloading. Thus, during the grading unloading process, the steel structure roof drives the supporting platform through friction. When the support platform 300 moves horizontally along the longitudinal direction, since there is a gap space 311 between both ends of the first crossbeam 310 and the adjacent limiting column 210, the support platform 300 moves a short distance along the longitudinal direction in the gap space 311 before it comes into contact with the limiting column 210. Alternatively, the support platform 300 may move a short distance along the longitudinal direction in the gap space 311 and then stop. In this case, the support platform 300 does not contact the limiting column 210. The gap space 311 can serve as a buffer space, which can greatly reduce the impact on the limiting column assembly caused by the steel structure roof moving horizontally with the support platform 300 through friction.

[0031] To facilitate the better installation of the lifter 120 on the upper part of the lifter support 110, in some embodiments of this invention, a support pad 111 is installed on the upper part of the lifter support 110, and the lifter 120 is installed on the upper part of the support pad 111. In this embodiment, by installing the support pad 111 on the upper part of the lifter support 110, the installation position of the support pad 111 can be adjusted to keep it horizontal. The support pad 111 has a leveling function, ensuring that the lifter 120 on the upper part of the support pad 111 remains horizontal, so that the lifter 120 can better push the support platform 300 upwards or downwards.

[0032] In some embodiments of this utility model, a plurality of clamping plates 112 are provided on the upper part of the supporting pad 111. All clamping plates 112 are arranged circumferentially around the lifting device 120. Specifically, all clamping plates 112 are welded and fixed to the upper part of the supporting pad 111. All clamping plates 112 cooperate to support the lifting device 120 and restrict the lifting device 120 from tilting or swinging relative to the supporting pad 111. By adopting the above structure, it is helpful to prevent the lifting device 120 from tilting or overturning during the process of pushing the supporting platform 300 upward and lifting the steel structure roof, thereby improving construction safety.

[0033] In some embodiments of this utility model, the lifting end of the lifting device 120 is provided with a lifting device pad 121, which can drive the lifting device pad 121 to move upward and fit tightly against the lower part of the supporting platform 300. Specifically, the lifting device pad 121 is bolted to the upper lifting end of the lifting device 120. By installing the lifting device pad 121 at the upper lifting end of the lifting device 120, the contact area between the upper lifting end of the lifting device 120 and the supporting platform 300 can be increased, thereby reducing the pressure and allowing the lifting device 120 to better push the supporting platform 300 to support the steel structure roof and move upward.

[0034] Because the steel structure roof will generate a certain horizontal displacement during the unloading process, in order to reduce the impact of the horizontal displacement of the steel structure roof on the graded unloading device, in some embodiments of this utility model, a lubricating layer is provided between the upper surface of the lifting pad 121 and the lower surface of the supporting platform 300. Specifically, after the lifting pad 121 is installed at the lifting end of the lifting device 120, the upper surface of the lifting pad 121 and the lower surface of the supporting platform 300 are ground smooth using a grinder. Then, lubricating oil is covered on the upper surface of the lifting pad 121 and / or the lower surface of the supporting platform 300, so that a lubricating layer is formed on the upper surface of the lifting pad 121 and / or the lower surface of the supporting platform 300. In this embodiment, the lubricating oil is a paste-like mechanical lubricating oil or silicone grease. By adopting the above structure, during the staged unloading process of the steel structure roof, when the steel structure roof drives the supporting platform 300 to move horizontally along the longitudinal direction through friction, since a lubricating layer is provided between the upper surface of the lifting pad 121 and the lower surface of the supporting platform 300, the supporting platform 300 and the upper surface of the lifting pad 121 are in a contact sliding state. Therefore, the supporting platform 300 can move smoothly relative to the lifting pad 121 along the longitudinal direction, which is conducive to the release of the horizontal displacement of the steel structure roof without causing impact to the lifting pad 120 and the lifting pad 121.

[0035] It should be noted that in the above embodiment, the lifting end of the lifting device 120 is provided with one lifting device shim 121. In other embodiments of this utility model, the lifting end of the lifting device 120 is provided with two, three, or more lifting device shims 121, all of which are stacked from bottom to top and then bolted to the upper part of the lifting end of the lifting device 120. At this time, a lubricating layer is applied to the upper surface of the uppermost lifting device shim 121.

[0036] To better support the steel structure roof using the graded unloading device, in some embodiments of this invention, the upper surface of the support platform 300 is provided with a bracket 330 for supporting workpieces, and the upper part of the bracket 330 has an arc-shaped groove 331. In this embodiment, the shape of the arc-shaped groove 331 is adapted to the shape of the truss tube 400 at the bottom of the steel structure roof. Therefore, when the graded unloading device for the steel structure roof in this embodiment is used to support the steel structure roof, the truss tube 400 at the bottom of the steel structure roof can be placed inside the arc-shaped groove 331 at the top of the bracket 330. At this time, the support platform 300 can more tightly support the steel structure roof, resulting in better support.

[0037] Reference Figures 1 to 12 The construction method of the steel structure roof graded unloading device according to certain embodiments of the second aspect of this utility model application includes the following steps: S1: Prepare materials, welding equipment, cutting equipment, and the steel structure roof tiered unloading device as described above. In this embodiment, the welding equipment is an electric welding machine, and the cutting equipment is an abrasive wheel cutter. S2: Install the steel structure roof tiered unloading device, fix the steel structure roof tiered unloading device under the steel structure roof, and ensure that the supporting platform 300 is in close contact with and supports the lower surface of the steel structure roof. The two ends of the second crossbeam 320 abut against the upper parts of the two supporting columns 220, respectively. In this embodiment, A bracket 330 is provided on the upper surface of the support platform 300. An arc-shaped groove 331 is provided on the upper part of the bracket 330. When the support platform 300 is close to and supports the steel structure roof, the truss tube 400 at the lower part of the steel structure roof correspondingly abuts against the interior of the arc-shaped groove 331 on the upper part of the bracket 330. Figure 5 As shown; S3: Lift the steel structure roof. Apply a lubricating layer to the upper surface of the lifting end of the lifting device 120. Then, the lifting end of the lifting device 120 extends upward and pushes the supporting platform 300 to support the steel structure roof to move upward and lift it up, so that the two ends of the second crossbeam 320 are separated from the upper part of the two supporting columns 220. Specifically, a lifting pad 121 is installed at the lifting end of the lifting device 120. The upper surface of the lifting pad 121 and the lower surface of the supporting platform 300 are ground smooth using a grinder. Then, lubricating oil is applied to the upper surface of the lifting pad 121 to form a lubricating layer. The lifting end of the lifting device 120 then drives the lifting pad 121 to move upward and pushes the supporting platform 300 to support the steel structure roof to move upward and lift it up. This causes the two ends of the second crossbeam 320 to separate from the upper part of the two supporting columns 220. During this process, the supporting platform 300 and the lifting pad 121 clamp the lubricating layer, and the supporting platform 300 and the upper surface of the lifting pad 121 are in a contact sliding state. Therefore, the supporting platform 300 can move smoothly relative to the lifting pad 121 in the longitudinal direction. S4: Cut the support column assembly, such as Figure 6 and Figure 7 As shown, a cutting device is used to remove material H1 of unloading height from the upper part of both support columns 220; as Figure 8 As shown, the jacking device 120 then slowly releases the load, causing the steel structure roof and supporting platform 300 to slowly descend until the two ends of the second crossbeam 320 abut against the upper part of the two supporting columns 220, completing the unloading stroke of one unloading height. S5: Cut the jacking support 110, such as Figure 9 and Figure 10 As shown, the lifting end of the lifter 120 drives the lifter pad 121 to extend upward and fit against the lower surface of the support platform 300. Welding equipment is used to weld the lifter pad 121 of the lifting end of the lifter 120 to the support platform 300. Then, the lifting end of the lifter 120 retracts, causing the lifter 120 to rise upward. The bottom of the lifter 120 detaches from the lifter support seat 110. Then, cutting equipment is used to separate the upper part of the lifter support seat 110 from the support pad 111. After cutting off a section of material L1 at the unloading height, the support plate 111 is moved downwards to the upper part of the cut lifter support 110. The support plate 111 is adjusted to ensure it is horizontal. Then, the support plate 111 and the lifter support 110 are welded together using welding equipment. Afterwards, the lifting end of the lifter 120 extends, causing the bottom of the lifter 120 to descend and abut against the support plate 111 on the upper part of the lifter support 110. Figure 11As shown, the welded connection between the lifting pad 121 at the lifting end of the lifting device 120 and the supporting platform 300 is then cut off using a cutting device. S6: Repeat steps S3 to S5 until the steel structure roof descends and is supported in the designated position, and the upper surface of the supporting platform 300 separates from the lower part of the steel structure roof, thus completing the staged unloading of the steel structure roof. Figure 12 As shown.

[0038] To ensure that the graded unloading device for the steel structure roof can better support and support the steel structure roof, such as Figure 5 As shown, in the construction method of the steel structure roof tiered unloading device according to certain embodiments of the second aspect of this utility model application, in step S2, the steel structure roof tiered unloading device is fixedly installed below the steel structure roof, and the supporting platform 300 is tightly attached to and supports the lower surface of the steel structure roof. When the two ends of the second crossbeam 320 abut against the upper part of the two supporting columns 220, the size of the guide groove 231 of the two guide members 230 is adapted to the size of the sliding member 240 at the end of the paired first crossbeam 310. The two guide members 230 support the sliding members 240 at both ends of the first crossbeam 310 respectively. The two supporting columns 220 support the two ends of the second crossbeam 320. That is, the two supporting columns 220 and the two guide members 230 work together to support the supporting platform 300 to support the steel structure roof, effectively preventing the steel structure roof from accidentally moving downward and falling.

[0039] When the steel structure roof needs to be unloaded in stages, before step S3, the guide grooves 231 of the two guide members 230 are first widened using a cutting device so that the length of the guide grooves 231 in the vertical direction is not less than the total height of the steel structure roof during staged unloading. That is, the length of the guide grooves 231 extending downward in the vertical direction is not less than the total height of the steel structure roof during staged unloading. This facilitates the subsequent slow unloading by the lifting device 120 and allows the supporting platform 300 to support the steel structure roof and move downward slowly, thereby realizing the staged unloading of the steel structure roof. The operation is simple and convenient, and the construction is safer and more reliable.

[0040] By adopting the above-mentioned construction method for the steel structure roof tiered unloading device, the steel structure roof tiered unloading device can better unload the steel structure roof in stages, and the operation is simple and convenient.

[0041] Although embodiments of this implementation have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this implementation, the scope of which is defined by the claims and their equivalents.

Claims

1. A graded unloading device for a steel structure roof, characterized in that, include: A base (100) is provided with a lifting device support (110) in the middle of the upper surface of the base (100), and a lifting device (120) is provided on the upper part of the lifting device support (110). The limiting column assembly includes two limiting columns (210) disposed on the upper surface of the base (100), and the two limiting columns (210) are arranged at intervals along the longitudinal direction on both sides of the lifting device (120). The support column assembly includes two support columns (220) disposed on the upper surface of the base (100), and the two support columns (220) are arranged at intervals along the lateral direction on both sides of the lifter (120). A support platform (300) is located above the lifting device (120). The support platform (300) has a first crossbeam (310) arranged in the longitudinal direction and a second crossbeam (320) arranged in the transverse direction. The first crossbeam (310) is movably disposed between two limiting columns (210). The first crossbeam (310) and the two limiting columns (210) can cooperate with each other and restrict the support platform (300) from moving relative to the base (100) in the longitudinal direction. A lifting guide assembly is provided between the first crossbeam (310) and the limiting column assembly. The lifting guide assembly is used to guide the support platform (300) to rise and fall relative to the limiting column assembly in the vertical direction. The two ends of the second crossbeam (320) can abut against the upper part of the two supporting columns (220) one by one. The lifting device (120) can push the supporting platform (300) to move upward relative to the base (100) and rise.

2. The steel structure roof graded unloading device according to claim 1, characterized in that, The lifting guide assembly includes a guide member (230) and a sliding member (240). The guide member (230) has a guide groove (231) arranged in the vertical direction. One of the guide member (230) and the sliding member (240) is disposed at one end of the first crossbeam (310), and the other is disposed at one of the limiting columns (210). The slider (240) is movably inserted into the guide groove (231), and the slider (240) can move up and down along the guide groove (231).

3. The steel structure roof graded unloading device according to claim 2, characterized in that, The sliding member (240) is disposed at the end of the first crossbeam (310), the guide member (230) is disposed on the limiting column (210), and the guide member (230) and the limiting column (210) are an integral structure.

4. The steel structure roof graded unloading device according to claim 3, characterized in that, The number of lifting guide components is two sets, one set of which is located at one end of the first crossbeam (310), and the other set of which is located at the other end of the first crossbeam (310).

5. The steel structure roof graded unloading device according to claim 1, characterized in that, A gap space (311) is provided between both ends of the first crossbeam (310) and the adjacent limiting column (210).

6. The steel structure roof graded unloading device according to claim 1, characterized in that, The upper part of the lifting device support (110) is provided with a support pad (111), and the lifting device (120) is provided on the upper part of the support pad (111).

7. The steel structure roof graded unloading device according to claim 6, characterized in that, The upper part of the support pad (111) is provided with multiple clamping plates (112), all of the clamping plates (112) are arranged around the circumference of the lifting device (120), and all the clamping plates (112) cooperate to support the lifting device (120) and restrict the lifting device (120) from tilting and swinging relative to the support pad (111).

8. The steel structure roof graded unloading device according to claim 1, characterized in that, The lifting end of the lifting device (120) is provided with a lifting device pad (121), and the lifting device (120) can drive the lifting device pad (121) to move upward and fit tightly against the lower part of the support platform (300).

9. The steel structure roof graded unloading device according to claim 8, characterized in that, A lubricating layer is provided between the upper surface of the lifting pad (121) and the lower surface of the supporting platform (300).

10. The steel structure roof graded unloading device according to claim 1, characterized in that, The upper surface of the support platform (300) is provided with a bracket (330) for supporting the workpiece, and the upper part of the bracket (330) is provided with an arc-shaped support groove (331).

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