Adjustable external overhanging type stair for people to go up for building construction

Abstract

The utility model discloses an adjustable external overhanging type climbing stair for building construction. The adjustable external overhanging type climbing stair comprises a main beam supporting frame (3), a cuboid-shaped main frame body (2) and an adjustable stair (1), wherein the main beam supporting frame (3) is fixed on a rear anchor embedded part (30) and a front anchor embedded part (31) of a current-layer stair; the cuboid-shaped main frame body (2) is fixed on the main beam supporting frame; the main beam supporting frame is composed of a set of supporting beams (29) arranged in parallel, the other end of a lower supporting rod (25) arranged on the main beam supporting frame is fixed to the lower stair, and the other end of a cable-stayed steel wire rope (32) arranged on the main beam supporting frame is fixed to an embedded part clamping ring of the upper stair. The device can be quickly built among floors, moved to a corresponding construction position according to construction requirements, guarantees safety of constructors, is convenient to mount and dismount, and is particularly suitable for solving the problem that the constructors cannot go up and down the channel due to the fact that the upper-layer construction is not completed during high-rise construction during floor construction of building engineering.

Description

Technical Field

[0001] This utility model belongs to the field of building construction technology, specifically relating to an adjustable cantilevered staircase for building construction. Background Technology

[0002] Currently, in building construction, staircases in the main structure are generally used for access between floors. This presents safety hazards during formwork erection (requiring climbing scaffolding for passage) and formwork removal (as the lower staircase formwork obstructs passage and needs to be removed). The standardized, modular access ramps currently available on the market have a fixed height of 3 meters per floor, which cannot be adjusted according to the structure and floor height, causing inconvenience during construction. Summary of the Invention

[0003] The purpose of this utility model is to solve the problems existing in the prior art and provide an adjustable external cantilever staircase for building construction that can be quickly erected, has an adjustable height according to construction needs, ensures the safety of construction personnel, is easy to install and disassemble, and is reusable.

[0004] The technical solution adopted by this utility model is as follows:

[0005] An adjustable cantilevered access staircase for building construction includes a main beam support frame fixed to the rear anchor and front anchor embedded parts of the staircase on this floor, a rectangular main frame fixed to the main beam support frame, and an adjustable staircase fixed to the main frame.

[0006] The main beam support frame consists of a set of parallel support beams. The other end of the lower support rod on the main beam support frame is fixed to the lower staircase, and the other end of the inclined steel wire rope on the main beam support frame is fixed to the pre-embedded clip on the upper staircase.

[0007] The main frame is a frame consisting of several uprights and horizontal bars fixed together by fasteners. A protective canopy is installed on the top of the frame, and handrails parallel to the adjustable stairs are fixed on the frame.

[0008] The adjustable staircase consists of a rectangular frame with four stair section support beams connected to each other via connectors on both sides. A set of parallel adjustable steps is fixed on the frame. End steel plates and hooks are fixed to the two ends of each stair section support beam and fixed to the crossbar.

[0009] Furthermore, the adjustable step consists of parallel step main ribs, a set of step support bars that are fixed at both ends to the step main ribs, and edge angle steels that are fixed at both ends of the step main ribs. The step main ribs have an adjustment slot at the top and stud holes at the bottom for fixing the step fixing device.

[0010] Furthermore, the step fixing device consists of an inverted U-shaped support beam slot, an adjustable section fixing nut and a first fixing bolt on one side of the inverted U-shaped support beam slot for fastening the main rib of the step, and a second fixing bolt and a fixing nut on the other side for fastening the stair section support beam.

[0011] Furthermore, the main beam support frame is fixed with a lower support rod connecting device for inserting the lower support rod, and a connecting rod at the front end for tightening the inclined steel wire rope.

[0012] Furthermore, the lower support rod is fixed to the lower staircase by a support rod fixing member. The support rod fixing member includes a support rod fixing plate connected to the lower staircase, a support rod rotation shaft fixing plate fixed on the support rod fixing plate and arranged in parallel, a support rod rotation shaft arranged between the support rod rotation shaft fixing plates, and a support rod connector head connected to the support rod rotation shaft for inserting the lower support rod.

[0013] Furthermore, the main beam support frame is fixed to the main frame body via a pole connector; the pole connector includes a base plate and a fixing plate arranged parallel to each other, a pole fixing nut and an adjustable bolt, and a pole connector head vertically fixed on the fixing plate, with the pole inserted into the pole connector head.

[0014] The beneficial effects of this utility model are:

[0015] The rods of this utility model are connected by fasteners, and their height is adjustable according to the floor height, making installation and use convenient. The length of the stair support beam can be selected according to the actual site conditions. The adjustable steps are fixed to the step fixing device by the upper adjustment slot and the lower stair support beam fixing section stud hole, which allows for adjustable span and convenient installation and disassembly. The main beam support frame is fixed with a lower support rod connecting device for inserting the lower support rod, and the front end is equipped with a connecting rod for tightening the inclined steel wire rope. The lower support rod is fixed to the lower staircase by the support rod fixing component. The main beam support frame and the main frame are fixed by the upright connector, making installation and disassembly simple and quick. The other end of the lower support rod on the main beam support frame is fixed to the lower staircase, and the other end of the inclined steel wire rope on the main beam support frame is fixed to the pre-embedded clip on the upper staircase. The installation and fixing of the cantilevered access staircase is convenient and the construction is safe and reliable. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 This is a structural schematic diagram of the adjustable staircase of this utility model;

[0018] Figure 3 This is a schematic diagram of the adjustable steps of this utility model;

[0019] Figure 4This is a schematic diagram of the step fixing device of this utility model;

[0020] Figure 5 This is a schematic diagram of the main step beam of this utility model;

[0021] Figure 6 This is a diagram showing the connection between the support beam and the main frame of this utility model via a pole connector;

[0022] Figure 7 This is a structural schematic diagram of the support rod fixing component of this utility model;

[0023] Figure 8 This is a schematic diagram of the structure of the pole connector of this utility model. Detailed Implementation

[0024] The content of this utility model will be further described below with reference to the accompanying drawings and embodiments.

[0025] like Figure 1 As shown, an adjustable cantilevered staircase for building construction includes a main beam support frame 3 fixed on the rear anchor embedded part 30 and the front anchor embedded part 31 of the staircase on this floor, a rectangular main frame 2 fixed on the main beam support frame, and an adjustable staircase 1 fixed in the main frame.

[0026] The main beam support frame consists of a set of parallel support beams 29. The other end of the lower support rod 25 on the main beam support frame is fixed to the lower staircase, and the other end of the inclined steel wire rope 32 on the main beam support frame is fixed to the pre-embedded clip of the upper staircase so that the cantilever device can be assisted in bearing the force to ensure construction safety. Each member can be connected by steel pipes and fasteners, and the height can be adjusted according to the floor height.

[0027] The main frame consists of several uprights 8 and horizontal bars 7 fixed together with fasteners. A protective canopy 4 is installed on the top of the frame. The top protective canopy is constructed by binding wooden beams and floorboards with wire on the horizontal members. Handrails 5 parallel to the adjustable stairs are fixed on the frame. The members can be connected by steel pipes and fasteners, and the height can be adjusted according to the floor height.

[0028] like Figure 2 As shown, the adjustable staircase is a rectangular frame with four stair section support beams 12 connected to both sides by connectors 11. A set of parallel adjustable steps 13 are fixed on the frame. End steel plates 9 and hooks 10 are fixed to the two ends of the stair section support beams and fixed to the crossbars. The end steel plates are made of ordinary steel plates. The stair section hooks are made of cold-bent steel plates. The two sides of the stair section support beam connectors are square steel and the middle part is steel plate, which are connected by welding. Fastening bolt holes are left on the square steel on both sides and fastening bolts are welded. The stair section support beams are made of ordinary square steel and the length can be selected according to the actual site conditions.

[0029] like Figure 3 As shown, to facilitate construction by adjusting the height between adjustable steps, the adjustable steps consist of parallel main step ribs 14, a set of parallel step support strips 15 fixed at both ends to the main step ribs, and edge angle steel 17 fixed at both ends of the main step ribs. The main step ribs have adjustment slots 23 at the top and stud holes 24 at the bottom for fixing the step support beams to the step fixing device 16. Figure 4 and Figure 5 As shown, the step fixing device consists of an inverted U-shaped support beam slot 18, an adjustable section fixing nut 19 and a first fixing bolt 22 set on one side of the inverted U-shaped support beam slot for fastening the main rib of the step, and a second fixing bolt 20 and a fixing nut 21 on the other side for fastening the stair section support beam.

[0030] like Figure 6 and Figure 7 As shown, for convenient and quick installation and disassembly, a lower support rod connecting device 26 for inserting the lower support rod is fixed on the main beam support frame, and a connecting rod 27 for tightening the inclined steel wire rope is provided at the front end; the lower support rod is fixed to the lower staircase by a support rod fixing component, which includes a support rod fixing plate 36 connected to the lower staircase, a support rod rotating shaft fixing plate 35 fixed parallel to the support rod fixing plate, a support rod rotating shaft 34 disposed between the support rod rotating shaft fixing plates, and a support rod connecting head 33 connected to the support rod rotating shaft for inserting the lower support rod; as shown Figure 8 As shown, the main beam support frame is fixed to the main frame body via a pole connector 28. The pole connector includes a base plate 39 and a fixing plate 40 arranged parallel to each other, a pole fixing nut 37 and an adjustable bolt 38, and a pole connecting head 41 vertically fixed to the fixing plate. The pole is inserted into the pole connecting head. It can be disassembled and reused after construction.

[0031] The installation method of this utility model is as follows:

[0032] Step 1: Pre-embed the rear anchor device and the front anchor device of the support beam;

[0033] Step 2: After the concrete pouring and curing of this floor is completed, place the support beam, install the rear anchor device and the front anchor device pressure plate of the support beam to fix the support beam.

[0034] Step 3: Install and secure the lower support rod connecting device using expansion bolts;

[0035] Step 4: Install and place the lower support rod, inserting it into the support rod connector in the support rod connecting device;

[0036] Step 5: After determining the position of the scaffold according to construction needs, adjust and install the upright connectors (after adjusting the position, use the upright fixing nuts and adjustable bolts to clamp the support beam with the fixed base plate and the fixed plate to ensure proper positioning).

[0037] Step 6: Insert the pole connector into the pole connector and erect the main frame using fasteners (the main frame is erected from bottom to top, and the top protective canopy and handrail are erected last).

[0038] Step 7: Select the appropriate stair section support beam according to the required length, assemble the stair section support beam using the stair section support beam connector, and place the relevant assembled components on the main frame through the stair section hooks;

[0039] Step 8: Use the step fixing device to install and fix each step to the 2-staircase support beam according to the required height, and complete the assembly of the adjustable staircase.

[0040] Step 9: Pour the upper layer of concrete and embed the pre-embedded clips required for the upper inclined steel wire rope;

[0041] Step 10: Insert the connecting rod at the front end of the support beam into the support beam, and then use rope clamps to tie the upper inclined steel wire rope to the connecting rod at the front end of the support beam. Hang the upper end of the upper inclined steel wire rope on the pre-embedded hanging ring of the main structure on the upper floor 0.

[0042] Dismantling method: When it is necessary to move to the lower level for construction, the main frame in steps 1 and 2 is gradually dismantled or lifted off as a whole after reinforcement measures are used; Step 2: Remove the upper inclined steel wire rope; Step 3: Remove the lower support rod and the lower components of the support rod connecting device; Step 4: Use hoisting equipment to loosen the rear anchor device and the front anchor device of the support beam, and dismantle the support beam; Step 5: Repeat the above installation steps, move the device to its location for continued use, and repeat the above installation steps to carry out the next step of the project.

[0043] The embodiments described above are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Various modifications and improvements made to the technical solutions of the present utility model by those skilled in the art without departing from the spirit of the present utility model should fall within the protection scope defined by the claims of the present utility model.

Claims

1. An adjustable cantilevered staircase for building construction, characterized in that, Includes a main beam support frame (3) fixed on the rear anchor embedded part (30) and front anchor embedded part (31) of the staircase on this floor, a rectangular main frame body (2) fixed on the main beam support frame, and an adjustable staircase (1) fixed in the main frame body. The main beam support frame consists of a set of parallel support beams (29). The other end of the lower support rod (25) on the main beam support frame is fixed to the lower staircase, and the other end of the inclined steel wire rope (32) on the main beam support frame is fixed to the pre-embedded clip of the upper staircase. The main frame is a frame consisting of several uprights (8) and horizontal bars (7) fixed by fasteners. A protective canopy (4) is installed on the top of the frame, and a handrail (5) parallel to the adjustable staircase is fixed on the frame. The adjustable staircase is a rectangular frame with four stair support beams (12) connected to each other by connectors (11) on both sides. A set of parallel adjustable steps (13) are fixed on the frame. End steel plates (9) and hooks (10) are fixed to the ends of the stair support beams and fixed to the crossbars.

2. The adjustable cantilevered staircase for building construction according to claim 1, characterized in that, The adjustable step consists of a main step rib (14) arranged in parallel, a set of step support bars (15) fixed at both ends on the main step rib, and edge angle steel (17) fixed at both ends of the main step rib. The main step rib has an adjustment slot (23) on the upper part and a stud hole (24) for fixing the step support beam section at the lower part, which is fixed to the step fixing device (16).

3. The adjustable cantilevered staircase for building construction according to claim 2, characterized in that, The step fixing device consists of an inverted U-shaped support beam slot (18), an adjustable section fixing nut (19) and a first fixing bolt (22) on one side of the inverted U-shaped support beam slot for fastening the main rib of the step, and a second fixing bolt (20) and a fixing nut (21) on the other side for fastening the ladder section support beam.

4. The adjustable cantilevered access staircase for building construction according to claim 1, characterized in that, The main beam support frame is fixed with a lower support rod connecting device (26) for inserting the lower support rod, and a connecting rod (27) for fastening the inclined steel wire rope is provided at the front end.

5. The adjustable cantilevered access staircase for building construction according to claim 1, characterized in that, The lower support rod is fixed to the lower staircase by a support rod fixing member. The support rod fixing member includes a support rod fixing plate (36) connected to the lower staircase, a support rod rotating shaft fixing plate (35) fixed on the support rod fixing plate and arranged in parallel, a support rod rotating shaft (34) arranged between the support rod rotating shaft fixing plates, and a support rod connector (33) connected to the support rod rotating shaft for inserting the lower support rod.

6. The adjustable cantilevered access staircase for building construction according to claim 1, characterized in that, The main beam support frame is fixed to the main frame body by a pole connector (28); the pole connector includes a bottom plate (39) and a fixing plate (40) arranged in parallel, a pole fixing nut (37) and an adjustable bolt (38), and a pole connector (41) vertically fixed on the fixing plate, and the pole is inserted into the pole connector.

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