Platform special for fabricated building staircase and construction method of platform

Abstract

The invention relates to the technical field of building construction, and discloses a special platform for an assembly type building staircase and a construction method thereof.The special platform comprises a frame body and a double-running staircase located in the frame body, the bottom of the frame body is provided with a supporting piece used for being supported on an installed prefabricated staircase, and the top of the frame body is provided with a lifting lug; the double-step stairway comprises an upper stairway, a lower stairway and a walking platform used for connecting the upper stairway and the lower stairway, the wide edge of the walking platform is provided with a first size adjusting part, and the long edge, located between the upper stairway and the lower stairway, of the walking platform is provided with a second size adjusting part. The frame body is provided with a third size adjusting part corresponding to the first size adjusting part in position and a fourth size adjusting part corresponding to the second size adjusting part in position. The size of the frame body can be adjusted, so that it is guaranteed that the distance between the outer edge of the frame body and the inner edges of different edge holes meets the protection distance required by specifications, and the applicability of the operation platform is guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of building construction, in particular to a special platform for a prefabricated building staircase and a construction method thereof. Background Art

[0002] With the popularization of prefabricated buildings, more and more building structures have begun to adopt prefabricated components, and prefabricated stairs are one of them. When prefabricated stairs are used in engineering projects, the prefabricated stairs need to be hoisted later than the working floor, which results in the existence of a layer-high edge opening in the stairwell of the working floor, which poses a safety hazard and is inconvenient for construction workers to pass between the working floor and the constructed floor below.

[0003] At present, the industry adopts the method of hoisting an operating platform in the stairwell to form a passage between the working floor and the constructed floor. For example, CN220036073U discloses an operating steel platform for assembled stairwell construction, including a frame structure, on which a steel ladder is fixed. The frame structure has a first vertical rod for vertically supporting the bottom of the installed prefabricated stairs, and a first cross rod for horizontally supporting the top of the installed prefabricated stairs. The end of the first cross rod is detachably connected to a second cross rod for horizontally supporting the constructed structural plate platform.

[0004] However, the above-mentioned operating platform has a fixed size and can only be installed in an edge opening whose size is larger than that of the frame structure, and the distance between the inner edge of the edge opening and the outer edge of the frame structure shall not be greater than 30 cm as required by the specification, so its installation and use will be restricted. Summary of the invention

[0005] In order to solve the deficiencies of the above-mentioned prior art, the present invention provides a special platform for stairwells in prefabricated buildings and a construction method thereof, which can adjust the size of the frame body to ensure that the distance between the outer edge of the frame body and the inner edges of different adjacent openings meets the protective distance required by the specifications, thereby ensuring the applicability of the operating platform.

[0006] The technical solution of the present invention is: a special platform for staircases in assembled buildings, comprising a frame body and a double-tread staircase located inside the frame body, the bottom of the frame body having a support for supporting on the installed prefabricated staircase, the top of the frame body having a lifting lug for cooperating with the lifting operation, the double-tread staircase comprising an upper staircase, a lower staircase and a walking platform for connecting the upper staircase and the lower staircase, the wide side of the walking platform having a first size adjustment part, the long side of the walking platform between the upper staircase and the lower staircase having a second size adjustment part, the frame body having a third size adjustment part corresponding to the position of the first size adjustment part and a fourth size adjustment part corresponding to the position of the second size adjustment part. The width and length of the frame body are adjusted by the third size adjustment part and the fourth size adjustment part, and the width and length of the walking platform are adjusted by the first size adjustment part and the second size adjustment part, so as to meet the applicability of the special platform in different adjacent openings, and the first size part corresponds to the third size part, the second size part corresponds to the fourth size part, the size adjustment position is unified, easy to assemble, the force-bearing curved surface formed is constant, and the stability of the structure is effectively guaranteed.

[0007] The first size adjustment part, the second size adjustment part, the third size adjustment part and the fourth size adjustment part are all telescopic structures composed of an inner rod and an outer tube sleeved on the outside of the inner rod. The inner rod is provided with a plurality of adjustment holes along the length direction, and the outer tube is provided with a positioning hole. The positioning hole and the adjustment hole are aligned and fixedly connected via an adjusting bolt.

[0008] An outer guardrail is fixed to the top of the frame body at a position outside the exit of the ascending staircase, a stair guardrail is fixed to the side of the ascending staircase and the descending staircase away from the frame body, an inner guardrail is fixed to the side of the walking platform away from the frame body at a position between the ascending staircase and the descending staircase, and the outer guardrail and the inner guardrail are respectively provided with a fifth size adjustment part and a sixth size adjustment part corresponding to the position of the fourth size adjustment part.

[0009] The support members include a first support frame for supporting the first step of the upper stair section of the installed prefabricated staircase, a second support frame for supporting the last step of the lower stair section of the installed prefabricated staircase, and a third support frame for supporting the first step of the lower stair section of the installed prefabricated staircase. The three support frames jointly support the frame body, ensuring the stability of the frame body in the stairwell without adding lateral support members, thereby effectively improving the continuity and convenience of the frame body during the hoisting process in the stairwell.

[0010] An interlayer protection plate is respectively provided on the exit side of the upward staircase and the entrance side of the downward staircase, and the interlayer protection plate includes a fixed part and a flip part, one end of the fixed part is fixed on the upward staircase or the downward staircase, and the other end of the fixed part is hinged to the flip part via a hinge, and the bottom surface of the flip part is used to abut against the floor plate of the stairwell of the prefabricated building.

[0011] The support member is provided with a seventh dimension adjustment part with adjustable height. The upper staircase and the lower staircase are angle-adjustable inclined stairs. The walking platform is adjustable in height direction and installed in the frame body. An auxiliary frame for extending the width of the walking platform is installed on the side of the walking platform away from the frame body. The bottom end of the upper staircase and the top end of the lower staircase are respectively fixed on the auxiliary frame. The top end of the upper staircase is adjustable in height direction and installed in the outer guardrail, and the bottom end of the lower staircase is fixed in the frame body. The stairs are set as angle-adjustable inclined stairs, the adjustable design of the upper staircase and the walking platform in height direction, and the auxiliary frame for extending the width is added to the walking platform, so that the double-run staircase can be adjusted in height direction. In addition, the setting of the seventh dimension adjustment part with adjustable height on the support part makes this special platform adaptable to construction projects with different floor heights.

[0012] The angle-adjustable inclined ladder includes two parallel side panels, a plurality of pedals arranged between the two side panels along the length direction, a pedal connecting rod located below each side panel, a base located at the bottom of the two side panels as the bottom end of the angle-adjustable inclined ladder, and a connecting plate hinged at the top of the side panel as the top end of the angle-adjustable inclined ladder, the front ends of the pedals are hinged to the side panels at the A connection point, the rear ends of the pedals are hinged to the pedal connecting rod at the B connection point, the lower ends of the two side panels are hinged to the base at the C connection point, the C connection point on the pedal close to the base is hinged with a base connecting rod, the end of the base connecting rod away from the pedal is hinged to the base at the D connection point, and the D connection point and the C connection point, the B connection point, and the A connection point on the pedal close to the base form a parallel four-bar linkage.

[0013] The support member is provided with a pressure sensor and a bottom plate at the bottom. The two pressure-bearing ends of the pressure sensor are connected to the support member and the bottom plate respectively. The signal end of the pressure sensor is connected to the monitoring module for communication. The monitoring module compares the measured value of the pressure sensor with the set pressure threshold. When the measured value of the pressure sensor is greater than the pressure threshold, the monitoring module sends an overweight signal. The setting of the pressure sensor can realize early warning and greatly improve the safety of the platform.

[0014] The present invention also provides a construction method for a special platform for a prefabricated building staircase, using the special platform for a prefabricated building staircase, comprising the following steps: S1. Make the frame body, walking platform, and stairs for going up and down; S2, adjusting the sizes of the third size adjustment part, the fourth size adjustment part and the fifth size adjustment part on the outer guardrail located on the top of the frame body, so that the outer size of the frame body is adapted to the size of the edge opening, and adjusting the sizes of the first size adjustment part, the second size adjustment part and the sixth size adjustment part on the inner guardrail located on the walking platform, so that the size of the walking platform is adapted to the inner size of the frame body; S3. Adjust the size of the seventh size adjustment part on the support member of the frame body to adjust the installation height of the walking platform in the frame body to adapt to the inter-floor height of the staircase of the prefabricated building; S4. The bottom end of the downstairs is fixed to the bottom crossbar of the frame body, and the top end of the upstairs is fixed to the corresponding position of the outer guardrail according to the inter-floor height of the staircase of the prefabricated building. The auxiliary frame is installed on the side of the walking platform away from the frame body, and the inclination angles of the upstairs and downstairs are adjusted so that the bottom end of the upstairs and the top end of the downstairs are against the outer side of the auxiliary frame and then fixed with bolts. Bamboo plywood of equivalent size is laid on the surface of the walking platform and the auxiliary frame; S5. Fix the pressure sensor and the bottom plate at the bottom of the support member, and connect the signal end of the pressure sensor to the monitoring module through a cable to complete the construction of the dedicated platform; S6. Use a crane to hoist the dedicated platform into the edge opening. The bottom plate of the support member is in contact with the prefabricated stair step surface that has been installed. The construction workers flip the interlayer protection plates on the entrance side of the downstairs and the exit side of the upstairs onto the floor plate. S7. After the operation on the working layer is completed, the construction personnel will flip the interlayer protection plates on the entrance side of the downstairs and the exit side of the upstairs into the main frame, use the crane to lift the special platform out of the edge opening, and then lift the required prefabricated stairs into the edge opening, repeat S6-S7 to complete the subsequent construction operations.

[0015] In summary, the present invention mainly has the following beneficial effects: This solution achieves adjustment of the frame body in width and length directions by setting a third size adjustment part and a fourth size adjustment part on the frame body, and achieves adjustment of the walking platform in width and length directions by setting a first size adjustment part and a second size adjustment part on the walking platform, so as to meet the applicability of the special platform in different edge openings, ensure that the distance between the outer edge of the frame body and the inner edge of the edge opening meets the protective distance required by the specification, and the first size part corresponds to the third size part, and the second size part corresponds to the fourth size part. The size adjustment positions are unified, which is convenient for assembly, and the force-bearing curved surface formed is constant, which effectively ensures the stability of the structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the present invention; Figure 2 It is a structural schematic diagram of the present invention from another angle; Figure 3 It is a front view of the present invention; Figure 4 is a side view of the present invention; Figure 5 It is a schematic diagram of the connection between the frame body and the walking platform in the present invention; Figure 6 yes Figure 5 A top view of Figure 7 It is a structural schematic diagram of the angle-adjustable inclined ladder of the present invention.

[0017] Reference numerals: 1. frame body; 101. third size adjustment part; 102. fourth size adjustment part; 103. first vertical rod; 104. first horizontal rod; 105. second vertical rod; 106. third vertical rod; 107. protection frame; 108. lifting lug; 2. walking platform; 201. first size adjustment part; 202. second size adjustment part; 203. telescopic support rod; 204. corner support rod; 205. auxiliary frame; 206. extension bolt; 3. support member; 3 01. First support frame; 302. Second support frame; 303. Third support frame; 304. Seventh dimension adjustment unit; 305. Reinforcement rod; 4. Down stairs; 401. Side panel; 402. Pedal; 403. Pedal connecting rod; 404. Base; 405. Base connecting rod; 406. Connecting plate; 407. A connection point; 408. B connection point; 409. C connection point; 410. D connection point; 5. Up stairs; 6. Outer guardrail; 601. Fifth dimension adjustment unit; 7. Stair guardrail; 8. Inner guardrail; 801. Sixth dimension adjustment unit; 9. Interlayer protection plate; 10. Vertical adjustment hole; 11. Pressure sensor; 12. Bottom plate; 13. Prefabricated stairs; 14. Floor plate. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present invention will be described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0019] In the following, the terms "first", "second", etc. are used for descriptive purposes only and are not to be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0020] In addition, in the present invention, directional terms such as "up", "down", "left" and "right" may be defined including but not limited to the orientation relative to the schematic placement of the components in the drawings. It should be understood that these directional terms may be relative concepts, which are used for relative description and clarification, and may change accordingly according to changes in the orientation of the components in the drawings.

[0021] In the present invention, unless otherwise clearly specified and limited, the term "connection" should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection or an indirect connection through an intermediate medium. In addition, the term "coupling" can be a way of achieving electrical connection for signal transmission.

[0022] like Figure 1-Figure 4 As shown, the present invention provides a special platform for stairwells in assembled buildings, including a frame body 1 and a double-tread staircase located inside the frame body 1, the bottom of the frame body 1 has a support member 3 for supporting on an installed prefabricated staircase 13, the top of the frame body 1 has a lifting lug 108 for cooperating with a hoisting operation, the double-tread staircase includes an ascending staircase 5, a descending staircase 4 and a walking platform 2 for connecting the ascending staircase 5 and the descending staircase, the wide side of the walking platform 2 has a first size adjustment portion 201, the long side of the walking platform 2 located between the ascending staircase 5 and the descending staircase 4 has a second size adjustment portion 202, the frame body 1 has a third size adjustment portion 101 corresponding to the position of the first size adjustment portion 201 and a fourth size adjustment portion 102 corresponding to the position of the second size adjustment portion 202, specifically, as shown in FIG. Figure 5 As shown, the frame body 1 is a rectangular parallelepiped frame surrounded by eight first cross bars 104 and four first vertical bars 103. Two second vertical bars 105 are fixed side by side between two first vertical bars 103 in the width direction of the frame body 1. A third vertical bar 106 is fixed between two first vertical bars 103 in the length direction of the frame body 1. A platform installation space for installing the walking platform 2 is formed between the third vertical bar 106 and the first vertical bar 103 that is closer. The space formed between the third vertical bar 106 and the first vertical bar 103 that is farther away and the second vertical bar 105 and the adjacent first vertical bars 103 are connected. The space formed between the vertical rods 103 crosses to form a stair installation space for installing the upper staircase 5 and the lower staircase 4. The walking platform 2 is composed of a rectangular frame with adjustable length and width and a bamboo plywood laid on the rectangular frame. The first size adjustment part 201 and the second size adjustment part 202 are respectively located in the middle of the wide side and the long side of the rectangular frame. The third size adjustment part 101 is located on the first cross bar 104 between the third vertical rod 106 and the first vertical rod 103 that is closer. The fourth size adjustment part 102 is located on the first cross bar 104 between the two second vertical rods 105. Figure 6As shown, the first size adjustment part 201, the second size adjustment part 202, the third size adjustment part 101 and the fourth size adjustment part 102 are all telescopic structures composed of an inner rod and an outer tube sleeved on the outside of the inner rod, the inner rod is provided with a plurality of adjustment holes along the length direction, the outer tube is provided with a positioning hole, and the positioning hole and the adjustment hole are aligned and fixedly connected by adjusting bolts.

[0023] The width and length of the frame body 1 are adjusted by the third size adjustment part 101 and the fourth size adjustment part 102, and the width and length of the walking platform 2 are adjusted by the first size adjustment part 201 and the second size adjustment part 202 to meet the applicability of the special platform in different edge openings. The first size part corresponds to the third size part, and the second size part corresponds to the fourth size part. The size adjustment positions are unified, which is convenient for assembly. The force-bearing curved surface formed is constant, which effectively ensures the stability of the structure.

[0024] An outer guardrail 6 is fixed on the top of the frame body 1 at the outer side of the exit of the ascending staircase 5, and an inner guardrail 8 is fixed on the side of the walking platform 2 away from the frame body 1 and located between the ascending staircase 5 and the descending staircase 4 to ensure the safety of the upper part of the frame body 1 and the upper part of the walking platform 2; preferably, in order to improve the supporting strength of the walking platform 2, corner support rods 204 are fixed at the corners of the rectangular frame of the walking platform 2, and multiple groups of transverse telescopic support rods 203 are fixed in the length direction of the rectangular frame; preferably, the ascending staircase 5 and the descending staircase are fixed to the inner side of the walking platform 2. A stair guardrail 7 is fixed to the side of the ladder 4 away from the frame body 1, and a protective frame 107 is fixed to the frame body 1 corresponding to the stair installation space of the lower stair 4 to ensure the safety of the upper part of the stairs. Of course, in order to adapt to the adjustable frame body 1 and the walking platform 2, the outer guardrail 6 and the inner guardrail 8 respectively have a fifth size adjustment part 601 and a sixth size adjustment part 801 corresponding to the position of the fourth size adjustment part 102, and the structures of the fifth size adjustment part 601 and the sixth size adjustment part 801 are the same as the structures of the aforementioned size adjustment parts.

[0025] like Figure 3As shown, the support member 3 includes a first support frame 301 for supporting the first step of the upper stair section of the installed prefabricated stair 13, a second support frame 302 for supporting the last step of the lower stair section of the installed prefabricated stair 13, and a third support frame 303 for supporting the first step of the lower stair section of the installed prefabricated stair 13. Specifically, the first support frame 301, the second support frame 302 and the third support frame 303 are all U-shaped frames fixed to the bottom of the frame body 1. In order to improve the stability of the support, an oblique reinforcement rod 305 is fixed between each support frame and the first cross bar 104 of the frame body 1. The frame body 1 is supported by the three support frames together, and the stability of the frame body 1 in the stairwell is guaranteed without increasing the transverse support member 3, thereby effectively improving the continuity and convenience of the frame body 1 during the lifting process in the stairwell.

[0026] In order to further improve the safety between the dedicated platform and the floor slab 14, an interlayer protective plate 9 is respectively provided on the exit side of the ascending stair 5 and the entrance side of the descending stair 4. The interlayer protective plate 9 includes a fixed part and a flipping part. One end of the fixed part is fixed to the ascending stair 5 or the descending stair 4, and the other end of the fixed part is hinged to the flipping part via a hinge. The bottom surface of the flipping part is used to abut against the floor slab 14 of the stairwell of the prefabricated building.

[0027] like Figure 3-Figure 6As shown, the support member 3 has a seventh size adjustment part 304 with adjustable height. Specifically, the seventh size adjustment part 304 is a U-shaped frame with the same structure as each support frame. The vertical rod of the seventh size adjustment part 304 is inserted into the vertical rod of each support frame along the vertical direction and fixed by bolts; the walking platform 2 is adjustable in the height direction in the frame body 1. Specifically, the first vertical rod 103, the second vertical rod 105 and the third vertical rod 106 of the frame body 1 corresponding to the platform installation space are provided with a plurality of vertical adjustment holes 10 in the height direction, and the rectangular frame of the walking platform 2 is connected to the vertical adjustment holes 10 of corresponding heights by bolts; and the walking platform 2 is installed with an auxiliary frame 205 for extending the width of the walking platform 2 on the side away from the frame body 1. Specifically, the auxiliary frame 205 is a U-shaped frame, and one end of the outer tube of the first size adjustment part 201 on the rectangular frame is connected to the The open end of the auxiliary frame 205 is plugged in and fixed together with the frame body 1. Of course, in order to adapt to the adjustable walking platform 2, the auxiliary frame 205 has an eighth size adjustment part that corresponds to the position of the second size adjustment part 202 and has the same structure. For ease of installation, the eighth size adjustment part and the adjacent second size adjustment part 202 share a set of lengthened bolts 206; the ascending stair 5 and the descending stair 4 are angle-adjustable inclined stairs, and the bottom end of the ascending stair 5 and the top end of the descending stair 4 are respectively fixed on the auxiliary frame 205, and the top end of the ascending stair 5 can be adjusted in the height direction and installed in the outer guardrail 6. Specifically, a plurality of vertical adjustment holes 10 are provided on the outer guardrail 6 on the exit side of the ascending stair 5 in the height direction. The top end of the ascending stair 5 is fixed to the vertical adjustment hole 10 of the corresponding height by bolts, and the bottom end of the descending stair 4 is fixed in the frame body 1. The stairs are arranged as an angle-adjustable inclined ladder, the upper stairs 5 and the walking platform 2 are designed to be adjustable in the height direction, and an auxiliary frame 205 with an extended width is added to the walking platform 2, so that the double-tread stairs can be adjusted in the height direction. In addition, the seventh dimension adjustment part 304 with adjustable height on the support part is arranged, so that this special platform can adapt to construction projects with different floor heights.

[0028] like Figure 7As shown, the angle-adjustable inclined ladder comprises two parallel side panels 401, a plurality of pedals 402 arranged between the two side panels 401 along the length direction, a pedal connecting rod 403 located below each side panel 401, a base 404 located at the bottom of the two side panels 401 as the bottom end of the angle-adjustable inclined ladder, and a connecting plate 406 hinged to the top of the side panels 401 as the top end of the angle-adjustable inclined ladder, the front ends of the pedals 402 are hinged to the side panels 401 at connection points A 407, the rear ends of the pedals 402 are hinged to the pedal connecting rod 403 at connection points B 408, the lower ends of the two side panels 401 are hinged to the base 404 at connection points C 409, and a base connecting rod 405 is hinged at the connection point C 409 on the pedal 402 close to the base 404, and the end of the base connecting rod 405 away from the pedal 402 is hinged to the base 40 4 is hinged at a D connection point 410, and the D connection point 410, the C connection point 409, the B connection point 408, and the A connection point 407 on the pedal 402 close to the base 404 form a parallel four-bar linkage. According to the needs of different inter-floor heights, the connecting plate 406 of the upper stair 5 is fixed to the vertical adjustment hole 10 of the outer guardrail 6, and the connecting plate 406 of the lower stair 4 is fixed to the auxiliary frame 205. The angles of the upper stair 5 and the lower stair 4 are adjusted accordingly, so that their respective bottom plates 12 are always kept horizontal with the pedal 402 under the action of the parallel four-bar linkage and are respectively fixed to the auxiliary frame 205 and the bottom of the frame body 1, so as to ensure that the stairs have good stability at different inclination angles. Specifically, the stair guardrail 7 is fixed to the side plate 401 away from the frame body 1, and changes with the angle of the side plate 401.

[0029] like Figure 4 As shown, in order to achieve early warning and greatly improve the safety of platform use, a pressure sensor 11 and a base plate 12 are provided at the bottom of the support member 3. The two pressure-bearing ends of the pressure sensor 11 are respectively connected to the support member 3 and the base plate 12. In this embodiment, there are two pressure sensors 11 at the bottom of each support frame. The upper pressure-bearing end of each pressure sensor 11 is fixed to the bottom of the cross bar of the seventh dimension adjustment part 304. The signal end of the pressure sensor 11 is communicatively connected with the monitoring module. The monitoring module compares the measured value of the pressure sensor 11 with the set pressure threshold. When the measured value of the pressure sensor 11 is greater than the pressure threshold, the monitoring module sends an overweight signal.

[0030] When using the above-mentioned prefabricated building staircase special platform for construction, follow the steps below: S1, making the frame body 1, the walking platform 2, the up stairs 5 and the down stairs 4; S2, adjusting the sizes of the third size adjustment part 101, the fourth size adjustment part 102 of the frame body 1 and the fifth size adjustment part 601 on the outer guardrail 6 located at the top of the frame body 1, so that the outer size of the frame body 1 is adapted to the size of the adjacent opening, and adjusting the sizes of the first size adjustment part 201, the second size adjustment part 202 of the walking platform 2 and the sixth size adjustment part 801 on the inner guardrail 8 located on the walking platform 2, so that the size of the walking platform 2 is adapted to the inner size of the frame body 1; S3, adjusting the size of the seventh size adjustment portion 304 on the support member 3 of the frame body 1, and adjusting the installation height of the walking platform 2 in the frame body 1 to adapt to the inter-floor height of the staircase of the prefabricated building; S4, the bottom end of the downstairs 4 is fixed to the bottom crossbar of the frame body 1, the top end of the upstairs 5 is fixed to the corresponding position of the outer guardrail 6 according to the inter-layer height of the staircase of the assembled building, the auxiliary frame 205 is installed on the side of the walking platform 2 away from the frame body 1, and the inclination angles of the upstairs 5 and the downstairs 4 are adjusted so that the bottom end of the upstairs 5 and the top end of the downstairs 4 are against the outer side of the auxiliary frame 205 and then fixed by bolts, and bamboo plywood of equivalent size is laid on the surface of the walking platform 2 and the auxiliary frame 205; S5. Fix the pressure sensor 11 and the bottom plate 12 at the bottom of the support 3. The signal end of the pressure sensor 11 is connected to the monitoring module through a cable to complete the construction of the dedicated platform. S6. The dedicated platform is hoisted into the edge opening by a crane, the bottom plate 12 at the bottom of the support member 3 is in contact with the step surface of the installed prefabricated staircase 13, and the construction personnel flip the interlayer protection plates 9 on the entrance side of the downstairs 4 and the exit side of the upstairs 5 onto the floor plate 14; S7, after the operation of the working layer is completed, the construction personnel flip the interlayer protection plates 9 on the entrance side of the lower staircase 4 and the exit side of the upper staircase 5 into the frame body 1, and use the crane to lift the special platform out of the edge hole, and then lift the required prefabricated staircase 13 into the edge hole, repeat S6-S7, and complete the subsequent construction operations. During the construction process, the monitoring module will alarm, and the construction personnel should be notified to evacuate in time, and the special platform should be lifted to separate the bottom plate 12 from the step surface of the prefabricated staircase 13. The specific examples in this embodiment can refer to the examples described in the above embodiments and exemplary embodiments, and this embodiment will not be repeated here.

[0031] Obviously, those skilled in the art should understand that the above modules or steps of the present invention can be implemented by a general computing device, they can be concentrated on a single computing device, or distributed on a network composed of multiple computing devices, they can be implemented by a program code executable by a computing device, so that they can be stored in a storage device and executed by the computing device, and in some cases, the steps shown or described can be executed in a different order than here, or they can be made into individual integrated circuit modules, or multiple modules or steps therein can be made into a single integrated circuit module for implementation. Thus, the present invention is not limited to any specific combination of hardware and software.

[0032] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A special platform for staircases in assembled buildings, comprising a frame body and a double-tread staircase located inside the frame body, wherein the bottom of the frame body has a support member for supporting on an installed prefabricated staircase, and the top of the frame body has a lifting lug for cooperating with the lifting operation, and the double-tread staircase comprises an ascending staircase, a descending staircase, and a walking platform for connecting the ascending staircase and the descending staircase, characterized in that: The walking platform has a first size adjustment portion on its wide side, a second size adjustment portion on its long side between the upper staircase and the lower staircase, and the frame body has a third size adjustment portion corresponding to the position of the first size adjustment portion and a fourth size adjustment portion corresponding to the position of the second size adjustment portion.

2. A special platform for stairwells in prefabricated buildings according to claim 1, characterized in that: The first size adjustment part, the second size adjustment part, the third size adjustment part and the fourth size adjustment part are all telescopic structures composed of an inner rod and an outer tube sleeved on the outside of the inner rod. The inner rod is provided with a plurality of adjustment holes along the length direction, and the outer tube is provided with a positioning hole. The positioning hole and the adjustment hole are aligned and fixedly connected via an adjusting bolt.

3. A special platform for stairwells in assembled buildings according to claim 1 or 2, characterized in that: An outer guardrail is fixed to the top of the frame body at a position outside the exit of the ascending staircase, a stair guardrail is fixed to the side of the ascending staircase and the descending staircase away from the frame body, an inner guardrail is fixed to the side of the walking platform away from the frame body at a position between the ascending staircase and the descending staircase, and the outer guardrail and the inner guardrail are respectively provided with a fifth size adjustment part and a sixth size adjustment part corresponding to the position of the fourth size adjustment part.

4. A special platform for stairwells in assembled buildings according to claim 1 or 2, characterized in that: The support member includes a first support frame for supporting on the first step of the upper stair section of the installed prefabricated stairs, a second support frame for supporting on the last step of the lower stair section of the installed prefabricated stairs, and a third support frame for supporting on the first step of the lower stair section of the installed prefabricated stairs.

5. A special platform for stairwells in assembled buildings according to claim 1 or 2, characterized in that: An interlayer protection plate is respectively provided on the exit side of the upward staircase and the entrance side of the downward staircase, and the interlayer protection plate includes a fixed part and a flip part, one end of the fixed part is fixed on the upward staircase or the downward staircase, and the other end of the fixed part is hinged to the flip part via a hinge, and the bottom surface of the flip part is used to abut against the floor plate of the stairwell of the prefabricated building.

6. The special platform for stairwells in prefabricated buildings according to claim 4, characterized in that: The support member is provided with a seventh dimension adjustment portion with adjustable height, the upper staircase and the lower staircase are angle-adjustable inclined staircases, the walking platform is adjustably installed in the frame body along the height direction, and an auxiliary frame for extending the width of the walking platform is installed on the side of the walking platform away from the frame body, the bottom end of the upper staircase and the top end of the lower staircase are respectively fixed on the auxiliary frame, the top end of the upper staircase is adjustably installed in the outer guardrail along the height direction, and the bottom end of the lower staircase is fixed in the frame body.

7. The special platform for stairwells in prefabricated buildings according to claim 6, characterized in that: The angle-adjustable inclined ladder includes two parallel side panels, a plurality of pedals arranged between the two side panels along the length direction, a pedal connecting rod located below each side panel, a base located at the bottom of the two side panels as the bottom end of the angle-adjustable inclined ladder, and a connecting plate hinged at the top of the side panel as the top end of the angle-adjustable inclined ladder, the front ends of the pedals are hinged to the side panels at the A connection point, the rear ends of the pedals are hinged to the pedal connecting rod at the B connection point, the lower ends of the two side panels are hinged to the base at the C connection point, the C connection point on the pedal close to the base is hinged with a base connecting rod, the end of the base connecting rod away from the pedal is hinged to the base at the D connection point, and the D connection point and the C connection point, the B connection point, and the A connection point on the pedal close to the base form a parallel four-bar linkage.

8. The special platform for stairwells in prefabricated buildings according to claim 4, characterized in that: A pressure sensor and a base plate are provided at the bottom of the support member, and the two pressure-bearing ends of the pressure sensor are respectively connected to the support member and the base plate, and the signal end of the pressure sensor is communicatively connected to a monitoring module. The monitoring module compares the measured value of the pressure sensor with a set pressure threshold. When the measured value of the pressure sensor is greater than the pressure threshold, the monitoring module sends an overweight signal.

9. A construction method for a special platform for stairwells in an assembled building, using the special platform for stairwells in an assembled building as claimed in any one of claims 1 to 8, characterized in that: The following steps are involved: S1. Make the frame body, walking platform, and stairs for going up and down; S2, adjusting the sizes of the third size adjustment part, the fourth size adjustment part and the fifth size adjustment part on the outer guardrail located on the top of the frame body, so that the outer size of the frame body is adapted to the size of the edge opening, and adjusting the sizes of the first size adjustment part, the second size adjustment part and the sixth size adjustment part on the inner guardrail located on the walking platform, so that the size of the walking platform is adapted to the inner size of the frame body; S3. Adjust the size of the seventh size adjustment part on the support member of the frame body to adjust the installation height of the walking platform in the frame body to adapt to the inter-floor height of the staircase of the prefabricated building; S4. The bottom end of the downstairs is fixed to the bottom crossbar of the frame body, and the top end of the upstairs is fixed to the corresponding position of the outer guardrail according to the inter-floor height of the staircase of the prefabricated building. The auxiliary frame is installed on the side of the walking platform away from the frame body, and the inclination angles of the upstairs and downstairs are adjusted so that the bottom end of the upstairs and the top end of the downstairs are against the outer side of the auxiliary frame and then fixed with bolts. Bamboo plywood of equivalent size is laid on the surface of the walking platform and the auxiliary frame; S5. Fix the pressure sensor and the bottom plate at the bottom of the support member, and connect the signal end of the pressure sensor to the monitoring module through a cable to complete the construction of the dedicated platform; S6. Use a crane to hoist the dedicated platform into the edge opening. The bottom plate of the support member is in contact with the prefabricated stair step surface that has been installed. The construction workers flip the interlayer protection plates on the entrance side of the downstairs and the exit side of the upstairs onto the floor plate. S7. After the operation on the working layer is completed, the construction personnel will flip the interlayer protection plates on the entrance side of the downstairs and the exit side of the upstairs into the main frame, use the crane to lift the special platform out of the edge opening, and then lift the required prefabricated stairs into the edge opening, repeat S6-S7 to complete the subsequent construction operations.

Images