Shaftway handling frame externally-attached type shelving steel platform system and construction method thereof

Abstract

The invention discloses a hoistway handling frame externally-attached type shelving steel platform system and a construction method thereof. The hoistway handling frame externally-attached type shelving steel platform system comprises main beams which are arranged in a hoistway at intervals in the longitudinal direction; a steel cylinder is arranged on the side wall of the opposite side of the hoistway; two ends of the main beam are inserted into the steel cylinders; the length of the main beam is smaller than or equal to the sum of the distance between the two transversely-corresponding steel cylinders and the length of one steel cylinder and larger than the distance between the two transversely-corresponding steel cylinders. An electromagnet is arranged in the steel cylinder on one side of the hoistway; a strip-shaped clamping groove is formed in the steel cylinder bottom plate on the other side of the hoistway; one end of the main beam is clamped in the strip-shaped clamping groove, and the other end of the main beam is in magnetic connection with the electromagnet; a groove-shaped plate is arranged at the top of the main beam along the transverse length; a sliding groove is formed in the middle of the bottom of the groove-shaped plate in the transverse direction. A limiting piece is slidably connected into the sliding groove. The lower end of a vertical rod of the operation frame is inserted into the groove-shaped plate and limited through a limiting piece. The technical problems that according to a traditional operation frame erecting mode, a lower frame body needs to be additionally erected and disassembled, the integrity of a main body structure is reduced due to the fact that holes are reserved in a shear wall, and the main beam installing and disassembling process is troublesome are solved.

Description

Technical Field

[0001] The invention relates to the technical field of building engineering construction, in particular to a shaft operating frame externally attached shelving steel platform system and a construction method thereof. Background Art

[0002] The construction of the structure around the elevator shaft of a super high-rise building usually requires the construction of a steel pipe operating frame to provide protection for the working surface and horizontal openings. To ensure safety, a layer of I-beam main beams must be set up every time the construction height is about 20m to support the upper floor construction frame. Due to the high height of super high-rise buildings, the number of floor changes of I-beam main beams is relatively large, and the traditional method of setting up the shaft operating frame is difficult to meet the requirements of modern urbanization construction speed and green and low-carbon. Regarding the existing method of setting up the shaft operating frame in which the I-beam main beam is placed on the side wall of the shear wall with reserved openings and the structural slab, there are problems such as the additional erection and dismantling of the lower frame due to insufficient bearing strength of the upper structure, the large amount of repair work for the shear wall holes where the main beams are placed, and the reduction of the integrity of the main structure, and the cumbersome installation and disassembly process of the main beam. Summary of the invention

[0003] The purpose of the present invention is to provide an externally attached steel platform system for a shaft operating frame, so as to solve the technical problems that the traditional operating frame erection method has the following problems: the lower frame needs to be additionally erected and dismantled due to the insufficient load-bearing strength of the upper structure, the shear wall holes at the main beam placement location require a large amount of repair work, the integrity of the main structure is reduced, and the main beam installation and disassembly process is relatively troublesome.

[0004] To achieve the above purpose, the present invention adopts the following technical solution.

[0005] A steel platform system attached to a shaft operating frame includes a main beam; a group of main beams are arranged in the shaft at intervals along the longitudinal direction; steel cylinders are arranged on the side wall on the opposite side of the shaft at the positions at both ends of the main beams; each main beam is arranged transversely, and the two ends of the main beam are respectively inserted into the steel cylinders; the length of the main beam is less than or equal to the sum of the spacing between two transverse corresponding steel cylinders and the length of one steel cylinder, and is greater than the spacing between two transverse corresponding steel cylinders; a connecting plate is arranged on the side of the steel cylinder close to the shaft side wall, and the connecting plate is connected to a threaded sleeve pre-buried in the opposite side wall of the shaft through a screw; An anti-pullout steel sheet is connected to the inner end of the thread sleeve in the side wall of the well; an electromagnet is arranged in the steel cylinder on one side of the well, near the middle position of the steel cylinder; a strip-shaped slot is arranged on the bottom plate of the steel cylinder on the other side of the well, near the middle position; one end of the main beam is clamped in the strip-shaped slot, and the other end of the main beam is magnetically connected to the electromagnet; a groove-shaped plate is arranged on the top of the main beam along the horizontal length; a slide groove is arranged in the middle of the bottom of the groove-shaped plate along the horizontal length; a limiting member is slidably connected in the slide groove; the lower end of the vertical rod of the operating frame is inserted in the groove-shaped plate, and the lower end of the vertical rod is limited by the limiting member.

[0006] Preferably, the cross-section of the main beam is I-shaped or rectangular; a first end plate is provided at one end of the main beam; the first end plate is magnetically connected to the electromagnet; a second end plate is provided at the other end of the main beam, and the bottom of the second end plate extends beyond the bottom of the main beam; the height of the portion of the bottom of the second end plate extending beyond the bottom of the main beam is less than the depth of the strip slot, and the extending portion is inserted into the strip slot.

[0007] Preferably, the outer end of the wire sleeve is flush with the surface of the shaft side wall, and the wire sleeve is connected and fixed to the horizontal steel bars at the corresponding position in the shaft side wall.

[0008] Preferably, a reinforcing corbel is provided at the bottom of the steel cylinder; the reinforcing corbel is welded to the bottom of the steel cylinder, and a side of the reinforcing corbel close to the side wall of the shaft is crimped onto the side wall of the shaft.

[0009] Preferably, the trough plate is in strip shape and is installed on the top of the main beam throughout its length; the cross section of the trough plate is U-shaped, and a thickening layer is provided at the bottom of the trough plate; the slide groove is provided on the thickening layer.

[0010] Preferably, the limiting member includes a wedge block, a connecting rod and a limiting hoop; the thickness of the wedge block gradually increases from bottom to top, and the thin end of the wedge block is inserted in the slide groove, and the thickness of the thick end of the wedge block is greater than the width of the slide groove; the connecting rod is connected to the top of the thick end of the wedge block; the limiting hoop is connected to the connecting rod, and the limiting hoop is a detachable hoop arranged on the vertical pole.

[0011] A construction method for a shaft operating frame externally attached shelving steel platform system comprises the following steps. Step 1: When installing the side wall of the well, pre-embed the thread sleeve in the opposite side wall of the well. Step 2: electromagnets are arranged in some steel cylinders near the middle of the steel cylinders; strip-shaped slots are arranged on the bottom plates of other steel cylinders near the middle of the steel cylinders. Step 3: Connect the steel cylinder in step 2 at the opposite side of the inner well and at the position corresponding to the main beam; the steel cylinder with the electromagnet and the steel cylinder with the bar slot are arranged one by one. Step 4, install the main beam: insert one end of the main beam into a steel cylinder with a strip slot, so that the end of the main beam rests against the side wall of the shaft on the corresponding side, and at the same time insert the other end of the main beam into a steel cylinder with an electromagnet, and then move the main beam horizontally so that one end of the main beam is clamped in the strip slot, and the other end of the main beam is magnetically connected to the electromagnet.

[0012] Step 5, installing the trough plate on the top of the main beam; Step seven, construct an operating frame, insert the lower end of the vertical pole into the groove plate, and limit the lower end of the vertical pole by a limiting piece.

[0013] Preferably, before installing the grooved plate in step six, a thickening layer is attached to the bottom of step six, and a slide groove is set at the long axis of the top surface of the thickening layer; in step seven, the limiting parts used to limit the vertical pole include a wedge block, a connecting rod and a limiting hoop; the wedge block is wedged into the slide grooves on both sides of the vertical pole so that the wedge block is tightly attached to the vertical pole to prevent the vertical pole from shaking left and right; then the limiting hoop is set on the vertical pole to prevent the vertical pole from moving up and down.

[0014] Compared with the prior art, the present invention has the following characteristics and beneficial effects.

[0015] 1. The present invention innovatively uses the thread sleeve and screw rod positioning pre-embedded, the shelving main beam fixing structure and the operating frame upright limiting structure to effectively solve the above-mentioned problems, and summarizes and forms a shaft operating frame external shelving steel platform system. This method has been successfully applied in the construction of this project, which has accelerated the construction progress and improved the construction quality.

[0016] 2. The size and installation form of the main beam of the external shelving steel platform system of the shaft operating frame of the present invention are designed by using BIM technology and standardized production. The strength of the connecting welds between the combined panels is calculated to meet the frame bearing capacity requirements. The steel cylinder in the steel platform system is connected and fixed with the preset threaded sleeve screws on the shear wall through long waist-shaped holes. The main beam can be placed directly in the steel cylinder. The main beam can be fixed by adjusting the position of the main beam and energizing the electromagnet. The structure is not integrated with the shear wall structure. After the project is completed, the steel cylinder can be removed by loosening the nut, thereby realizing rapid installation and disassembly.

[0017] 3. The present invention reserves space for a steel cylinder on the template of the side wall of the shaft at the position corresponding to the main beam, and installs the steel cylinder while sealing the mold. The main beam can be placed and the operating frame can be erected during the period from the completion of concrete pouring to the start of steel bar binding of the upper shear wall. There is no need to erect and dismantle the lower frame a second time due to waiting for demolding time, which further shortens the construction period and saves labor and material costs. In addition, the steel platform system is made of all-steel material and is difficult to damage. When disassembling, the electromagnet power supply can be disconnected, and the main beam can be easily disassembled and reused, with a large number of turnovers.

[0018] 4. The present invention transforms the traditional structural plate placement (the traditional main beam end is directly placed on the floor slab) into the structural beam side wall placement, so that the installation elevation of the shaft operating frame main beam avoids the construction floor, and the lower shaft frame does not need to be additionally erected to the construction floor, resulting in repeated erection and dismantling of the frame, effectively saving construction time, labor and material costs.

[0019] 5. The present invention sets a slot plate and a limiter at the bottom of the vertical pole of the operating frame, so that the lower end of the vertical pole is limited in the slot plate. The structural design of the present invention avoids the sliding and shaking of the vertical pole, making the operating frame more stable during construction, and effectively ensuring the safety of construction workers. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention will be further described in detail below in conjunction with the accompanying drawings.

[0021] Figure 1 It is a structural schematic diagram of the operating frame arranged on the main beam in the present invention.

[0022] Figure 2 It is a structural schematic diagram of the vertical rod of the operating frame of the present invention being inserted into the slot plate.

[0023] Figure 3 It is a structural schematic diagram of the end of the main beam in the present invention being inserted into the steel cylinder.

[0024] Figure 4 It is a structural schematic diagram of the connection between the thread sleeve and the horizontal steel bar in the side wall of the shaft in the present invention.

[0025] Figure 5 It is a structural schematic diagram in which one end of the main beam in the present invention is clamped in a strip-shaped clamping groove, and the other end of the main beam is magnetically connected to an electromagnet.

[0026] Figure 6 It is a schematic structural diagram of the limiting member in the present invention limiting the vertical rod.

[0027] Figure numerals: 1-main beam, 2-well, 3-steel cylinder, 4-connecting plate, 5-screw, 6-thread sleeve, 7-anti-pullout steel sheet, 9-electromagnet, 10-strip slot, 11-slot plate, 12-slide, 13-limiting piece, 13.1-wedge block, 13.2-connecting rod, 13.3-limiting hoop, 14-vertical pole, 15-first end plate, 16-second end plate, 17-horizontal steel bar, 18-reinforced corbel, 19-thickening layer. DETAILED DESCRIPTION

[0028] like Figure 1-6As shown, this shaft operating frame externally attached steel platform system includes a main beam 1; there is a group of main beams 1, which are arranged in the shaft 2 at intervals along the longitudinal direction; steel cylinders 3 are arranged on the side walls on the opposite sides of the shaft 2, at the positions at both ends of the main beams 1; the steel cylinders 3 are arranged at positions corresponding to the main structure floor slabs of each layer; each main beam 1 is arranged horizontally, and the two ends of the main beam 1 are respectively inserted into the steel cylinder 3; the length of the main beam 1 is less than or equal to the sum of the spacing between two horizontally corresponding steel cylinders 3 and the length of one steel cylinder 3, and is greater than the spacing between two horizontally corresponding steel cylinders 3; a connecting plate 4 is arranged on the side of the steel cylinder 3 close to the side wall of the shaft 2, and the connecting plate 4 is connected to the screw rod 5 through the screw rod 5 embedded in the opposite side wall of the shaft 2. The shaft 2 is connected with a sleeve 6; an anti-pullout steel sheet 7 is connected to the inner end of the wire sleeve 6 in the side wall of the shaft 2; an electromagnet 9 is arranged in the steel cylinder 3 on one side of the shaft 2, near the middle position of the steel cylinder 3; a strip groove 10 is arranged on the bottom plate of the steel cylinder 3 on the other side of the shaft 2, near the middle position; one end of the main beam 1 is clamped in the strip groove 10, and the other end of the main beam 1 is magnetically connected to the electromagnet 9; a groove plate 11 is arranged on the top of the main beam 1 along the horizontal length; a slide groove 12 is arranged in the middle of the bottom of the groove plate 11 along the horizontal length; a limiting member 13 is slidably connected in the slide groove 12; the lower end of the vertical rod 14 of the operating frame is inserted in the groove plate 11, and the lower end of the vertical rod 14 is limited by the limiting member 13.

[0029] In this embodiment, one side of the shaft 2 is a shear wall, and the other side of the shaft 2 is a structural beam arranged on the side of the floor slab; one end of the main beam 1 is connected to the shear wall on one side of the shaft 2, and the other end of the main beam 1 is connected to the structural beam on the side of the floor slab.

[0030] In this embodiment, the cross-section of the main beam 1 is I-shaped or rectangular; a first end plate 15 is provided at one end of the main beam 1; the first end plate 15 is magnetically connected to the electromagnet 9; a second end plate 16 is provided at the other end of the main beam 1, and the bottom of the second end plate 16 exceeds the bottom of the main beam 1; the height of the bottom of the second end plate 16 exceeding the bottom of the main beam 1 is less than the depth of the strip slot 10, and the exceeding portion is inserted into the strip slot 10.

[0031] In this embodiment, before the main beam 1 is manufactured, the spacing between the strip grooves 10 and the electromagnets 9 in the steel cylinders 3 on both sides is calculated according to the design drawing, and the length of the main beam 1 is adapted to the spacing; the internal space height of the cylinder is 1 cm to 3 cm higher than the height of the main beam 1; a long waist-shaped hole is provided on the connecting plate 4 on the side of the steel cylinder close to the side wall of the shaft 2, and the connecting plate 4 is connected and fixed to the pre-buried wire sleeve 6 and screw 5 on the side wall of the shaft 2 through the long waist-shaped hole.

[0032] In this embodiment, the outer end of the wire sleeve 6 is flush with the surface of the side wall of the shaft 2, and the wire sleeve 6 is connected and fixed to the horizontal steel bar 17 at the corresponding position in the side wall of the shaft 2.

[0033] In this embodiment, a reinforcing corbel 18 is provided at the bottom of the steel cylinder 3 ; the reinforcing corbel 18 is welded to the bottom of the steel cylinder 3 , and the side of the reinforcing corbel 18 close to the side wall of the shaft 2 is crimped onto the side wall of the shaft 2 .

[0034] In this embodiment, the trough plate 11 is strip-shaped and is installed on the top of the main beam 1 throughout its length; the cross-section of the trough plate 11 is U-shaped, and a thickening layer 19 is provided at the bottom of the trough plate 11; the slide groove 12 is provided on the thickening layer 19; and stiffening plates are provided at intervals along the transverse direction on the front and rear sides of the trough plate 11.

[0035] In this embodiment, the limiting member 13 includes a wedge block 13.1, a connecting rod 13.2 and a limiting hoop 13.3; the thickness of the wedge block 13.1 gradually increases from bottom to top, and the thin end of the wedge block 13.1 is inserted into the slide groove 12, and the thickness of the thick end of the wedge block 13.1 is greater than the width of the slide groove 12; the connecting rod 13.2 is connected to the top of the thick end of the wedge block 13.1; the limiting hoop 13.3 is connected to the connecting rod 13.2, and the limiting hoop 13.3 is detachably arranged on the vertical pole 14.

[0036] In this embodiment, the thickening layer 19 is made of thick rubber pads, the wedge block 13.1 is inserted into the thickening layer 19 and abuts against one side of the vertical pole 14. The thickening layer 19 exerts a squeezing effect on the wedge block 13.1 to prevent the wedge block 13.1 from shaking, thereby further limiting the vertical pole 14. A friction pad is provided on the inner surface of the limiting hoop 13.3 to increase the friction between the limiting hoop 13.3 and the vertical pole 14 to prevent the vertical pole 14 from slipping; through the dual effects of the wedge block 13.1 and the limiting hoop 13.3, the vertical pole 14 is stably limited.

[0037] In this embodiment, the limiting hoop 13.3 adopts a small clamp, including two arc-shaped hoop rods and connecting bolts; the two arc-shaped hoop rods are respectively clamped on both sides of the vertical pole 14, one end of which is hingedly connected and the other end is connected by the connecting bolts.

[0038] The construction method of the shaft operating frame externally attached steel platform system comprises the following steps.

[0039] Step 1: When on the side wall of the well 2, pre-embed the wire sleeve 6 in the opposite side wall of the well 2.

[0040] Step 2: Electromagnets 9 are arranged in some steel cylinders 3 near the middle of the steel cylinders 3 ; and strip-shaped slots 10 are arranged on the bottom plates of other steel cylinders 3 near the middle.

[0041] Step three, connect the steel cylinder 3 in step two at the opposite side of the inner well and at the position corresponding to the main beam 1; the steel cylinder 3 with the electromagnet 9 and the steel cylinder 3 with the strip slot 10 are arranged one by one.

[0042] Step 4, install the main beam 1: insert one end of the main beam 1 into the steel cylinder 3 provided with the strip slot 10, so that the end of the main beam 1 is against the side wall of the well on the corresponding side, and at the same time insert the other end of the main beam 1 into the steel cylinder 3 provided with the electromagnet 9; then move the main beam 1 horizontally, so that one end of the main beam 1 is clamped in the strip slot 10, and the other end of the main beam 1 is magnetically connected to the electromagnet 9; Step 5: Install the groove plate 11 on the top of the main beam 1; Step six, construct the operating frame, insert the lower end of the vertical rod 14 into the groove plate 11, and limit the lower end of the vertical rod 14 by the limit piece 13.

[0043] In this embodiment, before installing the groove plate 11 in step six, a thickening layer 19 is attached to the bottom of step six, and a slide groove 12 is set at the long axis of the top surface of the thickening layer 19; in step seven, the limiting member 13 used to limit the vertical pole 14 includes a wedge block 13.1, a connecting rod 13.2 and a limiting hoop 13.3; the wedge block 13.1 is wedged into the slide groove 12 on both sides of the vertical pole 14, so that the wedge block 13.1 is tightly attached to the vertical pole 14 to prevent the vertical pole 14 from shaking left and right; then the limiting hoop 13.3 is clamped on the vertical pole 14 to prevent the vertical pole 14 from moving up and down.

[0044] In this embodiment, a hole for passing the electric wire is reserved on the steel cylinder 3 on which the electromagnet 9 is installed, and the electric wire connected to the electromagnet passes through the hole and is connected to an external power source.

[0045] The above embodiments are not exhaustive of specific implementation methods, and there may be other embodiments. The above embodiments are intended to illustrate the present invention rather than to limit the protection scope of the present invention. All applications derived from simple variations of the present invention fall within the protection scope of the present invention.

Claims

1. A shaft operating frame externally attached steel platform system, comprising a main beam (1); characterized in that: The main beams (1) are arranged in a group and arranged in the shaft (2) at intervals along the longitudinal direction; steel cylinders (3) are arranged on the side wall opposite to the shaft (2) and at positions at both ends of the main beams (1); each main beam (1) is arranged transversely, and the two ends of the main beam (1) are respectively inserted into the steel cylinders (3); the length of the main beam (1) is less than or equal to the sum of the spacing between two transversely corresponding steel cylinders (3) and the length of one steel cylinder (3), and is greater than the spacing between two transversely corresponding steel cylinders (3); a connecting plate (4) is arranged on one side of the steel cylinder (3) close to the side wall of the shaft (2), and the connecting plate (4) is connected to a threaded sleeve (6) pre-buried in the side wall opposite to the shaft (2) through a screw rod (5); a pull-out steel threaded sleeve (6) is connected to the inner end of the threaded sleeve (6) in the side wall of the shaft (2); The invention relates to a plate (7); an electromagnet (9) is arranged in the steel cylinder (3) on one side of the well (2) and near the middle position of the steel cylinder (3); a strip-shaped slot (10) is arranged on the bottom plate of the steel cylinder (3) on the other side of the well (2) and near the middle position; one end of the main beam (1) is clamped in the strip-shaped slot (10), and the other end of the main beam (1) is magnetically connected to the electromagnet (9); a slot plate (11) is arranged on the top of the main beam (1) along the entire length in the horizontal direction; a slide groove (12) is arranged in the middle of the bottom of the slot plate (11) along the entire length in the horizontal direction; a limiting member (13) is slidably connected in the slide groove (12); the lower end of the vertical rod (14) of the operating frame is inserted into the slot plate (11), and the lower end of the vertical rod (14) is limited by the limiting member (13).

2. The hoistway operating frame externally attached steel platform system according to claim 1 is characterized in that: The cross section of the main beam (1) is in an I-shape or a rectangle; a first end plate (15) is provided at one end of the main beam (1); the first end plate (15) is magnetically connected to the electromagnet (9); a second end plate (16) is provided at the other end of the main beam (1), and the bottom of the second end plate (16) protrudes beyond the bottom of the main beam (1); the height of the portion of the bottom of the second end plate (16) protruding from the bottom of the main beam (1) is less than the depth of the strip-shaped slot (10), and the protruding portion is inserted into the strip-shaped slot (10).

3. The hoistway operating frame externally attached steel platform system according to claim 1 is characterized in that: The outer end of the thread sleeve (6) is flush with the surface of the side wall of the shaft (2), and the thread sleeve (6) is connected and fixed to the horizontal steel bar (17) at a corresponding position in the side wall of the shaft (2).

4. The hoistway operating frame externally attached steel platform system according to claim 1 is characterized in that: A reinforcing bracket (18) is provided at the bottom of the steel cylinder (3); the reinforcing bracket (18) is welded to the bottom of the steel cylinder (3), and a side of the reinforcing bracket (18) close to the side wall of the shaft (2) is pressed against the side wall of the shaft (2).

5. The hoistway operating frame externally attached steel platform system according to claim 1 is characterized in that: The groove plate (11) is strip-shaped and is installed on the top of the main beam (1) throughout its length; the cross section of the groove plate (11) is U-shaped, and a thickening layer (19) is provided at the bottom of the groove plate (11); and the slide groove (12) is provided on the thickening layer (19).

6. The hoistway operating frame externally attached steel platform system according to claim 5 is characterized in that: The limiting member (13) comprises a wedge block (13.1), a connecting rod (13.2) and a limiting hoop (13.3); the thickness of the wedge block (13.1) gradually increases from bottom to top, and the thin end of the wedge block (13.1) is inserted into the slide groove (12), and the thickness of the thick end of the wedge block (13.1) is greater than the width of the slide groove (12); the connecting rod (13.2) is connected to the top of the thick end of the wedge block (13.1); the limiting hoop (13.3) is connected to the connecting rod (13.2), and the limiting hoop (13.3) is detachably arranged on the vertical rod (14).

7. A construction method for the shaft operating frame externally attached steel platform system according to any one of claims 1 to 6, characterized in that: The steps include: Step 1: When the side wall of the well (2) is embedded, a thread sleeve (6) is embedded in the side wall opposite to the well (2). Step 2: an electromagnet (9) is arranged in some of the steel cylinders (3) near the middle of the steel cylinders (3); and a strip-shaped slot (10) is arranged on the bottom plate of other steel cylinders (3) near the middle. Step 3, connecting the steel cylinder (3) in step 2 at the position corresponding to the main beam (1) on the opposite side of the inner well; the steel cylinder (3) provided with the electromagnet (9) and the steel cylinder (3) provided with the strip-shaped slot (10) are arranged in one-to-one correspondence; Step 4, installing the main beam (1): inserting one end of the main beam (1) into a steel cylinder (3) provided with a strip-shaped slot (10), so that the end of the main beam (1) bears against the side wall of the well on the corresponding side, and inserting the other end of the main beam (1) into a steel cylinder (3) provided with an electromagnet (9); Step 5, moving the main beam (1) horizontally so that one end of the main beam (1) is clamped in the strip-shaped clamping groove (10), and the other end of the main beam (1) is magnetically connected to the electromagnet (9); Step 6: Install the groove plate (11) on the top of the main beam (1); Step seven, construct the operating frame, insert the lower end of the vertical rod (14) into the groove plate (11), and limit the lower end of the vertical rod (14) by the limit member (13).

8. The construction method of the shaft operating frame externally attached steel platform system according to claim 7 is characterized by: Before installing the groove plate (11) in step six, a thickening layer (19) is attached to the bottom of step six, and a slide groove (12) is provided at the long axis of the top surface of the thickening layer (19); in step seven, the limiting member (13) used to limit the vertical rod (14) includes a wedge block (13.1), a connecting rod (13.2) and a limiting hoop (13.3); the wedge block (13.1) is wedged into the slide groove (12) on both sides of the vertical rod (14), so that the wedge block (13.1) is closely attached to the vertical rod (14) to prevent the vertical rod (14) from shaking left and right; then the limiting hoop (13.3) is clamped on the vertical rod (14) to prevent the vertical rod (14) from moving up and down.

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