Steel structure roof overhanging bottom decoration construction operation platform and construction method

Abstract

The invention belongs to the technical field of roof overhanging construction, and particularly discloses a steel structure roof overhanging bottom decoration construction operation platform and a construction method.The operation platform comprises a locking positioning assembly, a height adjusting assembly and an operation platform; the two locking and positioning assemblies are detachably connected with the upper flange or the lower flange of the outer steel beam and the upper flange or the lower flange of the inner steel beam correspondingly. The height adjusting assembly comprises a hanging rail arranged at the bottom end of the locking positioning assembly and a connecting terminal arranged between the hanging rail and the working platform, and the contact surface of the connecting terminal and the hanging rail is provided with tooth structures meshed with each other. The two ends of the operation platform are detachably connected with the two height adjusting assemblies through connecting bolts correspondingly. The inner steel beams and the outer steel beams with different widths are stably connected through the locking and positioning assemblies respectively, and the operation platform is kept horizontal by adjusting the meshing positions of the corresponding hanging rails and the connecting terminals.

Description

Technical Field

[0001] The present invention belongs to the technical field of roof cantilever construction, and more specifically, relates to a steel structure roof cantilever bottom decoration construction work platform and a construction method. Background Art

[0002] In the design and construction of modern buildings, especially high-rise buildings, steel structures are widely used due to their high strength, light weight, and fast construction speed. However, after the steel structure is completed, the aluminum or decorative panel cladding and other related decorative work at the bottom of the overhanging parts often pose unique challenges. This work requires not only high standards of construction quality but also ensuring safety during the construction process. Especially when dealing with steel roofs with high floor heights (typically exceeding 50 meters) and large overhangs, finding a suitable construction method becomes a pressing issue.

[0003] In order to solve the construction difficulties of the bottom decoration of the cantilevered parts of steel structure roofs, the current common practice is to use scaffolding, aerial work platforms and other equipment for high-altitude operations. When the cantilever distance is short and the construction height is not high, these traditional methods can better meet the construction needs. For example, for a cantilever distance of less than 1 meter and a lower construction height, it is feasible to use scaffolding or aerial work platforms for construction, which not only ensures construction efficiency but also takes into account safety. However, with the increasing complexity of building design, the cantilever distance generally exceeds 2 meters, and even reaches more than 4 meters. At the same time, the construction height has also increased to more than 50 meters. The traditional construction methods have begun to show their shortcomings. Some improvement measures, such as the use of cantilever scaffolding, attempt to adapt to larger cantilever distances by reducing the space occupied on the ground.

[0004] Although the above methods are feasible under certain conditions, they show obvious limitations when faced with more complex steel structure roof construction environments. For example, the use of ground-based scaffolding will lead to an increase in the number of rows required and an increase in the erection height, which not only increases construction costs but also increases safety risks. Although cantilever scaffolding can alleviate this problem to a certain extent, due to the long cantilever distance, it is difficult to pass conventional safety calculations, which limits its scope of application; ordinary aerial platforms cannot reach the corresponding construction height and there are certain construction risks; in addition, existing work platforms are mostly concentrated on construction support for steel beams or the upper part, and fail to effectively cover the special needs of the cantilevered bottom area of the steel structure roof. Summary of the Invention

[0005] In response to the above defects or improvement needs of the prior art, the present invention provides a steel structure roof cantilever bottom decoration construction work platform and construction method, wherein the inner steel beam and the outer steel beam of different widths at the steel structure roof cantilever bottom are stably connected by the locking positioning assembly, and the height difference between the outer steel beam and the inner steel beam is compensated by adjusting the corresponding engaging position of the hanging rail and the connecting terminal, so that the operating platform remains level, thereby effectively adapting to the complex structure of the steel structure roof cantilever bottom and reducing the difficulty and cost of building the work platform, effectively improving the quality and efficiency of decoration construction, and reducing the construction risk and possibility of rework caused by platform instability.

[0006] In order to achieve the above-mentioned object, the present invention provides a steel structure roof cantilever bottom decoration construction work platform, which is characterized by comprising:

[0007] Locking and positioning components, and two of the locking and positioning components are detachably connected to the upper flange or lower flange of the outer steel beam and the upper flange or lower flange of the inner steel beam respectively;

[0008] A height adjustment assembly comprising: a hanging rail provided at the bottom end of the locking and positioning assembly, and a connecting terminal provided between the hanging rail and the working platform, wherein the contact surfaces of the connecting terminal and the hanging rail are provided with mutually meshing tooth structures;

[0009] An operating platform, both ends of which are detachably connected to the two height adjustment assemblies via connecting bolts;

[0010] Among them, the outer steel beam and the inner steel beam of different widths at the bottom of the steel structure roof cantilever are stably connected by the locking positioning assembly, and the height difference between the outer steel beam and the inner steel beam is compensated by adjusting the corresponding engagement position of the hanging rail and the connecting terminal, so that the operating platform remains level.

[0011] Furthermore, the locking positioning assembly includes an upper flange locking positioning piece, which is used to stably connect the upper flange of the outer steel beam or the inner steel beam, and includes: a first locking positioning body, a limiting connecting plate, a through-core screw, a first locking slider, a first pin shaft and a first tightening screw; the first locking positioning body is in the shape of a whole, which includes a first support plate arranged in the upper end area of the upper flange of the steel beam and an arc-shaped mounting tube adapted to the through-core screw is provided at the upper end of the first support plate, the axis of the arc-shaped mounting tube is parallel to the axis of the first support plate to constrain the horizontal displacement of the through-core screw, and a first concave connecting block arranged at the bottom end of the first support plate, the first concave connecting block is passed through the bottom plate through hole, the pin shaft and the first locking slider arranged on the hanging rail The hanging ear at the end is movably connected to the hanging rail; the limiting connecting plate is in the shape of a circle, one side of which is arranged under the upper flange, and the other side is detachably connected to the first locking positioning body through the through screw and the connecting bolt; the first locking slider is a rectangular block as a whole and a waist hole is provided in the middle of the side surface, which is arranged at the lower end of the upper flange through the through hole of the bottom plate of the first concave connecting block; the first pin shaft passes through the side plates on both sides of the first concave connecting block and the waist hole of the first locking slider to control the contact between the first locking slider and the bottom end of the upper flange; the first clamping screw passes through the bolt hole on the surface of the first support plate and fits tightly with the surface of one end of the first locking slider to control the other end of the first locking slider to fit tightly with the bottom end surface of the upper flange.

[0012] The locking mechanism is configured to allow the locking cam to move relative to the locking cam, and the locking cam is configured to move the locking cam relative to the first locking member and the second locking member to move relative to the first locking member.

[0013] Furthermore, the contact areas between the two side plates of the first concave connection block and the upper flange are both provided with outwardly extending support plates;

[0014] The contact areas between the two side plates of the second concave connection block and the lower flange are both provided with outwardly extending supporting flat plates.

[0015] Furthermore, the hanging rail is a bar-shaped rack as a whole, and a plurality of slots are provided on its vertical axis at the same intervals;

[0016] The connecting terminal is a rectangular block as a whole, and at least two bolt holes are provided on its vertical axis. The distance between the bolt holes is the same and greater than the distance between the slot holes.

[0017] Furthermore, the teeth on the surface of the hanging rail and the connecting terminal are rectangular teeth.

[0018] Furthermore, the operating platform includes: a hanging basket, which is a standard hanging basket and includes guardrails, footboards and a perforated steel bottom plate. Its overall length is adapted to the horizontal spacing of the outer steel beam and the inner steel beam, and the middle part of the vertical support columns of the guardrails on both sides are provided with bolt holes corresponding to the bolt holes on the connecting terminals.

[0019] Furthermore, the hanging basket is provided with a plurality of electronic levels.

[0020] Furthermore, the operating platform also includes: a fall arrester, which is arranged on the upper end of the hanging basket through a fall arrester mounting seat and a pin shaft arranged on the upper end of the hanging basket guardrail to stably connect the operator's safety belt.

[0021] Another aspect of the present invention provides a method for constructing a work platform for the cantilevered bottom decoration of a steel structure roof, which is implemented using the above-mentioned work platform and includes the following steps:

[0022] S1: Check that all devices are operating normally, install the hanging basket according to the basket manual and install the fall arrester to the upper end of the hanging basket;

[0023] S2: According to the structure of the outer steel beam and the inner steel beam, if the upper flange meets the installation conditions of the locking and positioning assembly, install the upper flange locking and positioning pieces in pairs at the corresponding positions of the upper flanges of the outer steel beam and the inner steel beam, and install the hanging rail to the bottom end of the upper flange locking and positioning pieces through the pin shaft;

[0024] S3: If the lower flange meets the installation conditions of the locking and positioning assembly, the lower flange locking and positioning piece fixedly connected to the hanging rail is installed to the corresponding positions of the lower flanges of the outer steel beam and the inner steel beam;

[0025] S4: Hoist the assembled hanging basket to the corresponding position by a tower crane, and stably fix the hanging basket to the corresponding positions of the two hanging rails through the connecting terminals, the bolt holes on the hanging basket guardrails and the connecting bolts, and keep the hanging basket in a horizontal state, and then proceed with the decoration construction of the cantilever bottom of the steel structure roof in this area;

[0026] S5: After the work in this area is completed, the workers are evacuated from the hanging basket, and after the hanging basket is lifted by the tower crane rope and subjected to force, the upper flange locking locator or the lower flange locking locator is released, and the tower crane is used to assist the work platform to move along the steel beam to the next construction area. Afterwards, according to the height change of the outer steel beam and the inner steel beam in the new construction area, the meshing tooth position of the hanging rail and the connecting terminal is adjusted by matching the slot hole of the hanging rail with the bolt hole of the connecting terminal to achieve height difference compensation, and the upper flange locking locator or the lower flange locking locator is re-locked to continue the decoration construction;

[0027] S6: Repeat steps S2 to S5 to complete the decoration construction of the entire construction surface, then evacuate the workers from the hanging basket, dismantle the work platform and put it into the warehouse.

[0028] In general, the above technical solutions conceived by the present invention can achieve the following beneficial effects compared with the prior art:

[0029] 1. The working platform of the present invention stably connects the inner steel beam and the outer steel beam of different widths at the bottom of the steel structure roof cantilever through the locking and positioning components, and compensates for the height difference between the outer steel beam and the inner steel beam by adjusting the corresponding engagement positions of the hanging rails and the connecting terminals, so that the operating platform remains level, thereby effectively adapting to the complex structure of the bottom of the steel structure roof cantilever and reducing the difficulty and cost of building the working platform, effectively improving the quality and efficiency of decoration construction, and reducing the construction risk and possibility of rework caused by platform instability.

[0030] 2. The working platform of the present invention uses the paired upper flange locking locators or the lower flange locking locators to stably position other components between the outer steel beam and the inner steel beam, thereby adapting to construction scenarios where the working platform cannot be assembled through the upper flange or the lower flange; secondly, the through screw cooperates with the limit connecting plate and the first support plate, so that the working platform can adapt to upper flanges of different widths; secondly, the hanging rail is connected by a pin connection to keep it in a vertical state at all times, so that the working platform can adapt to upper flanges with rotation angles; in addition, the locking slider is pressed against the upper flange surface or the lower flange surface through the lever principle, thereby solving the problem that the working platform has no fixing measures on the inner side and is not suitable for steel beams with slopes, and the fixing measures are inconvenient to disassemble.

[0031] 3. The working platform of the present invention facilitates flexible fixation and position adjustment of the connecting terminals through multiple slots on the hanging rail and multiple bolt holes on the connecting terminals while ensuring that the overall structural strength is met, and improves the accuracy and adaptability of the height adjustment of the operating platform through multi-speed locking; in addition, by arranging rectangular teeth in the contact area between the hanging rail and the connecting terminals, the contact area and good stress distribution can be effectively increased, further improving the shear resistance and anti-slip performance of the connection part, and ensuring the stability and safety of the connection.

[0032] 4. The working platform of the present invention, through the standard hanging basket combined with a variety of safety devices, can provide a stable construction working environment for the cantilevered bottom area of the steel structure roof and effectively ensure the working safety of construction personnel, improve working efficiency, and at the same time, is conducive to daily inspection, maintenance and management, reduce the cost of use, and improve the overall construction management level. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 This is a structural schematic diagram of an embodiment of the present invention in which a work platform is assembled to an upper flange of a steel beam;

[0034] Figure 2 A cross-sectional view of an upper flange locking locator according to an embodiment of the present invention;

[0035] Figure 3 This is a partial structural diagram of an embodiment of the present invention in which a work platform is assembled to the lower flange of a steel beam;

[0036] Figure 4 2 is a cross-sectional view of a lower flange locking locator according to an embodiment of the present invention;

[0037] Figure 5 This is a structural diagram of the connection between the hanging rail, the connecting terminal and the hanging basket according to an embodiment of the present invention;

[0038] Figure 6 The figure is a schematic flow chart of the steps of the construction method of the working platform according to an embodiment of the present invention.

[0039] In all the drawings, the same reference numerals represent the same technical features, specifically:

[0040] 1-outer steel beam, 2-inner steel beam, 3-locking positioning assembly, 31-upper flange locking positioning piece, 311-first locking positioning body, 3111-first support plate, 3112-first concave connecting block, 312-limit connecting plate, 313-through screw, 314-first locking slider, 315-first pin, 316-first clamping screw, 32-lower flange locking positioning piece, 321-second locking positioning body, 3211-second support plate, 3212-second concave connecting block, 322-second locking slider, 323-second pin, 324-second clamping screw, 4-height adjustment assembly, 41-hanging rail, 411-slot, 42-connecting terminal, 5-operating platform, 51-hanging basket, 511-electronic level, 52-fall arrester, 521-fall arrester mounting seat. DETAILED DESCRIPTION

[0041] In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only intended to illustrate the present invention and are not intended to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

[0042] Example 1

[0043] like Figures 1 to 5 As shown, embodiment 1 of the present invention provides a steel structure roof cantilever bottom decoration construction work platform, comprising: a locking positioning component 3, a height adjustment component 4 and an operating platform 5; the two locking positioning components 3 are detachably connected to the upper flange or lower flange of the outer steel beam 1 and the upper flange or lower flange of the inner steel beam 2 respectively; the height adjustment component 4 comprises: a hanging rail 41 provided at the bottom end of the locking positioning component 3, and a connecting terminal 42 provided between the hanging rail 41 and the working platform, the contact surface of the connecting terminal 42 and the hanging rail 41 are provided with a tooth structure that meshes with each other; the two ends of the operating platform 5 are respectively connected by connecting bolts. It is detachably connected to the two height adjustment components 4; during use, the inner steel beam 2 and the outer steel beam 1 of different widths at the bottom of the steel structure roof cantilever are stably connected respectively through the locking positioning component 3, and the height difference between the outer steel beam 1 and the inner steel beam 2 is compensated by adjusting the corresponding engagement position of the hanging rail 41 and the connecting terminal 42, so that the operating platform 5 remains horizontal, thereby effectively adapting to the complex structure of the bottom of the steel structure roof cantilever and reducing the difficulty and cost of building the working platform, effectively improving the quality and efficiency of decoration construction, and reducing the construction risk and possibility of rework caused by platform instability.

[0044] like Figure 1 and Figure 2When the cap 312 is in the closed position, the cam 314 is in the closed position, and the first screw 316 is in the open position, and the cam 314 is in the open position, so that the cam 314 can be fixed on the cam 314 side of the workbench, thereby preventing the cam 314 from sliding onto the workbench. When the cap 314 is in the closed position, the cam 313 is in the closed position, and the latch 31 is in the closed position, so that the cap 314 can be fixed to the cam 313 by the latch 313a.

[0045] like Figure 3 and Figure 4As shown, the locking and positioning assembly 3 also includes a lower flange locking positioning piece 32, which is used to stably connect the lower flange of the outer steel beam 1 or the inner steel beam 2, and includes: a second locking and positioning body 321, a second locking slider 322, a second pin shaft 323 and a second pressing screw 324; the second locking and positioning body 321 is L-shaped as a whole, and includes a second support plate 3211 provided at the upper end area of the lower flange of the steel beam, and a second concave connecting block 3212 provided at the bottom end of the second support plate 3211, and the bottom end of the second concave connecting block 3212 is fixedly connected to the upper end of the hanging rail 41 The second locking slider 322 is a rectangular block as a whole and has a waist hole in the middle of the side surface, which is arranged at the lower end of the lower flange through the through hole of the bottom plate of the second concave connecting block 3212; the second pin shaft 323 passes through the side plates on both sides of the second concave connecting block 3212 and the waist hole of the second locking slider 322 to control the contact between the second locking slider 322 and the bottom end of the lower flange; the second clamping screw 324 passes through the bolt hole on the surface of the second support plate 3211 and fits tightly with the surface of one end of the second locking slider 322 to control the other end of the second locking slider 322 to fit tightly with the bottom end surface of the lower flange.

[0046] In an optional embodiment, both side plates of the first concave connecting block 3112 and / or the second concave connecting block 3212 are provided with outwardly extending support plates in the contact area with the steel beam to increase the contact area with the steel beam, thereby improving the stability of the device.

[0047] In an optional embodiment, triangular ribs are provided between the bottom ends of the two side plates of the second concave connecting block 3212 and the surface of the opposite side of the hanging rail 41 where the teeth are provided, so as to enhance the connection stability and ensure construction safety.

[0048] It can be immediately seen that, through the above design, the paired upper flange locking locators 31 or the lower flange locking locators 32 are used to stably position other components between the outer steel beam 1 and the inner steel beam 2, thereby adapting to construction scenarios where the work platform cannot be assembled through the upper flange or lower flange; secondly, the through-core screw 313 cooperates with the limit connecting plate 312 and the first support plate 3111, so that the work platform can adapt to upper flanges of different widths; secondly, the hanging rail 41 is connected by a pin connection so that it always remains in a vertical state, so that the work platform can adapt to upper flanges with rotation angles; in addition, the locking slider is pressed against the upper flange surface or the lower flange surface through the lever principle, thereby solving the problem that the inner side of the work platform has no fixing measures and is not suitable for steel beams with slopes, and the fixing measures are inconvenient to disassemble.

[0049] like Figures 1 to 5As shown, the hanging rail 41 is a bar-shaped rack as a whole, and a plurality of slots 411 are provided on its vertical axis at the same intervals; the connecting terminal 42 is a rectangular block as a whole, and at least two bolt holes are provided on its vertical axis, and the distance between the bolt holes is the same and greater than the distance between the slots 411.

[0050] In an optional embodiment, the teeth on the surfaces of the hanging rail 41 and the connecting terminal 42 are rectangular teeth.

[0051] It can be understood that, through the above design, by using multiple slots on the hanging rail 41 and multiple bolt holes on the connecting terminal 42, it is convenient to realize flexible fixation and position adjustment of the connecting terminal 42 while ensuring that the overall structural strength is met, and the accuracy and adaptability of the height adjustment of the operating platform 5 are improved through multi-gear locking; in addition, by providing rectangular teeth in the contact area between the hanging rail 41 and the connecting terminal 42, the contact area and good stress distribution can be effectively increased, and the shear resistance and anti-slip performance of the connection part can be further improved, thereby ensuring the stability and safety of the connection.

[0052] like Figure 1 As shown, the operating platform 5 includes: a hanging basket 51, which is a standard hanging basket and includes guardrails, footboards and a perforated steel bottom plate. Its overall length is adapted to the horizontal spacing of the outer steel beam 1 and the inner steel beam 2, and the middle part of the vertical support column of the guardrails on both sides is provided with a bolt hole corresponding to the bolt hole on the connecting terminal 42.

[0053] In an optional embodiment, the operating platform 5 also includes a fall arrester 52, which is arranged at the upper end of the hanging basket 51 through a fall arrester mounting seat 521 and a pin shaft arranged at the upper end of the guardrail of the hanging basket 51 to stably connect to the safety belt on the operator.

[0054] In an optional embodiment, the hanging basket 51 is provided with a plurality of electronic levels 511 , which can provide a digital display, issue a sound prompt, or be connected to a smartphone application via Bluetooth for data recording and analysis.

[0055] It can be understood that through the above design, the operating platform 5 using a standard hanging basket with a variety of safety devices can provide a stable construction working environment for the cantilevered bottom area of the steel structure roof and effectively ensure the safety of construction workers, improve work efficiency, and at the same time, it is conducive to daily inspection, maintenance and management, reduce usage costs, and improve the overall construction management level.

[0056] Example 2

[0057] like Figure 6 As shown, based on Example 1, Example 2 of the present invention provides a construction method for a steel structure roof cantilever bottom decoration construction work platform, comprising the following steps:

[0058] S1: Check that all devices are operating normally, install the hanging basket 51 according to the hanging basket manual and install the fall arrester 52 to the upper end of the hanging basket 51;

[0059] S2: According to the structure of the outer steel beam 1 and the inner steel beam 2, if the upper flange meets the installation conditions of the locking and positioning assembly 3, install the upper flange locking and positioning pieces 31 in pairs at the corresponding positions of the upper flanges of the outer steel beam 1 and the inner steel beam 2, and install the hanging rail 41 to the bottom end of the upper flange locking and positioning pieces 31 through the pin shaft;

[0060] S3: If the lower flange meets the installation conditions of the locking and positioning assembly 3, the lower flange locking and positioning member 32 fixedly connected to the hanging rail 41 is installed to the corresponding positions of the lower flanges of the outer steel beam 1 and the inner steel beam 2;

[0061] S4: Use a tower crane to hoist the assembled hanging basket 51 to the corresponding position, and use the connecting terminals 42, the bolt holes on the guardrail of the hanging basket 51 and the connecting bolts to stably fix the hanging basket 51 to the corresponding positions of the two hanging rails 41, and keep the hanging basket 51 in a horizontal state. Then, the decoration construction of the cantilever bottom of the steel structure roof in this area can be carried out;

[0062] S5: After the work in this area is completed, the workers are evacuated from the hanging basket 51, and after the hanging basket 51 is lifted by the tower crane rope and subjected to force, the upper flange locking locator 31 or the lower flange locking locator 32 is released, and the tower crane is used to assist the work platform to move along the steel beam to the next construction area. Afterwards, according to the height change of the outer steel beam 1 and the inner steel beam 2 in the new construction area, the meshing tooth position of the hanging rail 41 and the connecting terminal 42 is adjusted by matching the slot hole 411 of the hanging rail 41 with the bolt hole of the connecting terminal 42 to achieve height difference compensation, and the upper flange locking locator 31 or the lower flange locking locator 32 is re-locked to continue the decoration construction;

[0063] S6: Repeat steps S2 to S5 to complete the decoration construction of the entire construction surface. After that, the workers are evacuated from the hanging basket 51, and the working platform is disassembled and placed in a warehouse.

[0064] It should be noted that the installation position of the connection terminal 42 on the hanging basket 51 can be changed through the bolt holes of the vertical support rods of the hanging basket 51, and the distance from the bottom plate of the hanging basket 51 to the construction surface can be adjusted to adapt to different construction scenarios.

[0065] Other technical features are the same as those in Example 1 and can achieve the same technical effects, so they will not be described in detail here.

[0066] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indications will also change accordingly.

[0067] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features specified as "first" and "second" may explicitly or implicitly include at least one of such features. In addition, the technical solutions between the various embodiments can be combined with each other, but this must be based on the fact that ordinary technicians in this field can implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0068] In the present invention, the terms "comprises," "comprising," or any other variations thereof are intended to encompass non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus. In the absence of further limitations, an element defined by the phrase "comprising..." does not preclude the presence of additional identical elements in the process, method, article, or apparatus that includes the element.

[0069] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit the present invention. Those skilled in the art will readily understand that the above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A steel structure roof cantilever bottom decoration construction work platform, characterized in that: include: A locking and positioning assembly (3), wherein the two locking and positioning assemblies (3) are detachably connected to the upper flange or lower flange of the outer steel beam (1) and the upper flange or lower flange of the inner steel beam (2); A height adjustment assembly (4) comprising: a hanging rail (41) provided at the bottom end of the locking and positioning assembly (3), and a connecting terminal (42) provided between the hanging rail (41) and the working platform, wherein the contact surfaces of the connecting terminal (42) and the hanging rail (41) are provided with mutually meshing tooth structures; An operating platform (5), with both ends of the operating platform (5) being detachably connected to the two height adjustment assemblies (4) via connecting bolts; The outer steel beam (1) and the inner steel beam (2) of different widths at the cantilevered bottom of the steel structure roof are stably connected by the locking positioning assembly (3), and the height difference between the outer steel beam (1) and the inner steel beam (2) is compensated by adjusting the corresponding engagement positions of the hanging rail (41) and the connecting terminal (42), so that the operating platform (5) remains horizontal.

2. The working platform according to claim 1, characterized in that: The locking and positioning assembly (3) includes an upper flange locking and positioning member (31), which is used to stably connect the upper flange of the outer steel beam (1) or the inner steel beam (2), and includes: a first locking and positioning body (311), a limiting connecting plate (312), a through-core screw (313), a first locking slider (314), a first pin (315) and a first pressing screw (316); the first locking and positioning body (311) is (L)-shaped as a whole, and The invention comprises a first support plate (3111) provided on the upper end area of the upper flange of the steel beam, and an arc-shaped mounting tube adapted to the through-core screw (313) is provided on the upper end of the first support plate (3111), the axis of the arc-shaped mounting tube is parallel to the axis of the first support plate (3111) to constrain the horizontal displacement of the through-core screw (313), and a first concave connecting block (3112) provided on the bottom end of the first support plate (3111), the first concave connecting block (3112) is connected to the through hole of the bottom plate and the pin The shaft and the hanging ear provided at the upper end of the hanging rail (41) are movably connected to the hanging rail (41); the limiting connecting plate (312) is in an L-shape as a whole, one side of which is provided below the upper flange, and the other side is detachably connected to the first locking positioning body (311) through the through-core screw (313) and the connecting bolt; the first locking slider (314) is in a rectangular block as a whole and is provided with a waist hole in the middle of the side, which is provided on the upper wing through the through hole of the bottom plate of the first concave connecting block (3112). The first pin shaft (315) passes through the side plates on both sides of the first concave connecting block (3112) and the waist hole of the first locking slider (314) to control the first locking slider (314) to contact with the bottom end of the upper flange; the first clamping screw (316) passes through the bolt hole on the surface of the first supporting plate (3111) and fits tightly with the surface of one end of the first locking slider (314) to control the other end of the first locking slider (314) to fit tightly with the bottom end surface of the upper flange.

3. The working platform according to claim 2, characterized in that: The locking and positioning assembly (3) further includes a lower flange locking and positioning member (32), which is used to stably connect the lower flange of the outer steel beam (1) or the inner steel beam (2), and includes: a second locking and positioning body (321), a second locking slider (322), a second pin shaft (323) and a second pressing screw (324); the second locking and positioning body (321) is generally (L)-shaped, and includes a second support plate (3211) provided at the upper end area of the lower flange of the steel beam, and a second concave connecting block (3212) provided at the bottom end of the second support plate (3211), and the bottom end of the second concave connecting block (3212) is connected to the upper end of the hanging rail (41). The second locking slider (322) is a rectangular block as a whole and has a waist hole in the middle of the side surface, which is arranged at the lower end of the lower flange through the through hole of the bottom plate of the second concave connecting block (3212); the second pin shaft (323) passes through the side plates on both sides of the second concave connecting block (3212) and the waist hole of the second locking slider (322) to control the second locking slider (322) to contact with the bottom end of the lower flange; the second clamping screw (324) passes through the bolt hole on the surface of the second support plate (3211) and fits tightly with the surface of one end of the second locking slider (322) to control the other end of the second locking slider (322) to fit tightly with the bottom end surface of the lower flange.

4. The working platform according to claim 3, characterized in that: The contact areas between the two side plates of the first concave connection block (3112) and the upper flange are both provided with outwardly extending support plates; The contact areas between the two side plates of the second concave connection block (3212) and the lower flange are both provided with outwardly extending supporting plates.

5. The work platform according to any one of claims 1 to 4, characterized in that: The hanging rail (41) is a bar-shaped rack as a whole, and a plurality of slots (411) are provided on its vertical axis at the same intervals; The connecting terminal (42) is a rectangular block as a whole, and at least two bolt holes are provided on its vertical axis. The distance between the bolt holes is the same and greater than the distance between the slot holes (411).

6. The working platform according to claim 5, characterized in that: The teeth on the surfaces of the hanging rail (41) and the connecting terminal (42) are rectangular teeth.

7. The work platform according to any one of claims 1 to 4, characterized in that: The operating platform (5) comprises a hanging basket (51), the hanging basket (51) being a standard hanging basket and comprising guardrails, footboards and a perforated steel bottom plate, the overall length of which is adapted to the horizontal spacing of the outer steel beam (1) and the inner steel beam (2), and the middle portions of the vertical support columns of the guardrails on both sides are provided with bolt holes corresponding to the bolt holes on the connection terminals (42).

8. The working platform according to claim 7, characterized in that: The hanging basket (51) is provided with a plurality of electronic levels (511).

9. The working platform according to claim 7, characterized in that: The operating platform (5) further comprises a fall arrester (52), wherein the fall arrester (52) is arranged at the upper end of the hanging basket (51) via a fall arrester mounting seat (521) arranged at the upper end of the guardrail of the hanging basket (51) and a pin shaft so as to be stably connected to the safety belt of the operator.

10. A construction method for a work platform for cantilevered bottom decoration of a steel structure roof, implemented using the work platform according to any one of claims 1 to 9, characterized in that: The steps include: S1: Check that all devices are operating normally, install the hanging basket (51) according to the hanging basket instruction manual and install the fall arrester (52) to the upper end of the hanging basket (51); S2: According to the structure of the outer steel beam (1) and the inner steel beam (2), if the upper flange meets the installation conditions of the locking positioning assembly (3), upper flange locking positioning members (31) are installed in pairs at corresponding positions on the upper flanges of the outer steel beam (1) and the inner steel beam (2), and the hanging rail (41) is installed to the bottom end of the upper flange locking positioning member (31) through the pin shaft; S3: If the lower flange meets the installation conditions of the locking and positioning assembly (3), the lower flange locking and positioning member (32) fixedly connected to the hanging rail (41) is installed to the corresponding positions of the lower flanges of the outer steel beam (1) and the inner steel beam (2); S4: hoisting the assembled hanging basket (51) to the corresponding position by a tower crane, and stably fixing the hanging basket (51) to the corresponding positions of the two hanging rails (41) by connecting terminals (42), bolt holes on the guardrail of the hanging basket (51) and connecting bolts, and keeping the hanging basket (51) in a horizontal state, and then carrying out the decoration construction of the cantilever bottom of the steel structure roof in the area; S5: After the work in the area is completed, the workers are evacuated from the hanging basket (51), and after the hanging basket (51) is lifted by the tower crane rope and subjected to force, the upper flange locking locator (31) or the lower flange locking locator (32) is loosened, and the working platform is moved to the next construction area along the steel beam with the assistance of the tower crane. Afterwards, according to the height change of the outer steel beam (1) and the inner steel beam (2) in the new construction area, the meshing tooth position of the hanging rail (41) and the connecting terminal (42) is adjusted by matching the slot hole (411) of the hanging rail (41) with the bolt hole of the connecting terminal (42) to achieve height difference compensation, and the upper flange locking locator (31) or the lower flange locking locator (32) is re-locked to continue the decoration construction; S6: Repeat steps S2 to S5 to complete the decoration construction of the entire construction surface, then evacuate the workers from the hanging basket (51), dismantle the working platform and put it into the warehouse.

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