Temporary protection device for prefabricated stair

Abstract

This invention belongs to the field of construction equipment technology, specifically a temporary protective device for prefabricated stairs. It includes multiple support frames installed along the stair treads, each connected to a fixing mechanism for securely attaching to the stairs. Support columns are rotatably connected to the support frames via a pivot A, allowing the columns to rotate around the pivot A from a position perpendicular to the stair treads towards the outside of the treads. This invention can adapt to prefabricated stairs with varying degrees of inclination. The clamps, in conjunction with the bottom of the support frames, effectively fix the stairs without drilling, providing effective support for the columns. This reduces interference from the support columns during the handling of large items, lowers the difficulty of moving large items on stairs, effectively reduces damage to the railings from external impacts, forms a secondary buffer, improves the cushioning effect, and extends the lifespan of the equipment.

Description

Technical Field

[0001] This invention belongs to the field of building construction equipment technology, specifically a temporary protective device for prefabricated stairs. Background Technology

[0002] After the prefabricated staircase is installed, the edges of the staircase need to be protected to ensure the safety of subsequent construction. Currently, most methods involve fixing the guardrail to the edges of the staircase by drilling holes and inserting bolts, which causes considerable damage to the prefabricated staircase.

[0003] A Chinese patent with publication number CN116220404A discloses a temporary safety protection device for building staircase construction, including a load-bearing column. A telescopic component is fixedly connected to the upper end of the load-bearing column, and a railing is hinged to the upper end of the telescopic component via a rotating component. An installation mechanism is installed at the lower part of the load-bearing column, including a claw rod. The claw rod is fixedly connected to the lower end of the transverse section of the claw rod, and a claw plate is fixedly connected to the lower end face. An adjusting ring is rotatably connected to the outside of the load-bearing column. Several positioning grooves are evenly formed circumferentially on the outer wall of the load-bearing column, which is fitted by the adjusting ring. Several positioning grooves are evenly fixed circumferentially on the inner wall of the adjusting ring via spring columns. The positioning block that mates with the positioning groove has a sliding cylinder fixedly connected to the outside of the adjusting ring. A pull rod is rotatably connected inside the sliding cylinder. Several slots are equidistantly opened in the inner cavity of the sliding cylinder. Several latches that mate with the slots are slidably connected to the outside of the pull rod through a top spring. A screw is threadedly connected to the end of the pull rod away from the sliding cylinder. A C-shaped claw is rotatably connected to the end of the screw away from the pull rod. The C-shaped claw is then driven by the threaded rod to abut against the wall, so that the device can be installed on one side of the staircase. This avoids damage to the staircase caused by drilling, ensures the integrity of the staircase, and makes installation and disassembly simple and quick.

[0004] However, in actual use, when it is necessary to move large items over stairs, such as scaffolding used by construction workers, if the width of the stairs is narrow, these temporary protective devices can easily obstruct the movement of large items when passing through the corners of the stairs. Workers need to lift the items or change their angle to avoid the items being stuck by the temporary protective devices and corners during the movement, making the process more difficult.

[0005] Therefore, the present invention provides a temporary protective device for prefabricated stairs. Summary of the Invention

[0006] In order to overcome the shortcomings of the prior art, at least one technical problem raised in the background art is solved.

[0007] The technical solution adopted by the present invention to solve its technical problem is: a temporary protective device for a prefabricated staircase, comprising a plurality of support frames arranged along the stair tread, the support frames being connected to a fixing mechanism for connecting and fixing them to the staircase.

[0008] The support column is capable of rotating around axis A from a position perpendicular to the stair tread to the outside of the stair tread. The support column is connected to an adjustment drive mechanism that drives it to rotate around axis A.

[0009] A railing, used to connect two adjacent support posts;

[0010] The connecting mechanism is used to fix the end of the railing. The connecting mechanism is connected to a moving drive mechanism. When the adjusting drive mechanism drives the support column to rotate around axis A, the moving drive mechanism drives the connecting mechanism to move along the length of the support column.

[0011] Preferably, the fixing mechanism includes a limiting frame, a clamping plate is rotatably connected to the side of the limiting frame via a B-axis, and the limiting frame is connected to a clamping drive that drives it to move in a direction perpendicular to the stair tread.

[0012] Preferably, the clamping drive includes an outer sleeve fixedly connected to the bottom of the support frame, an inner sleeve slidably connected inside the outer sleeve, the bottom end of the inner sleeve being fixedly connected to the limit frame, and a B screw threadedly connected inside the inner sleeve, the top end of the B screw being rotatably connected to the support frame.

[0013] Preferably, the adjustment drive mechanism includes an A screw rotatably mounted on a support frame, an A slider externally threaded to the A screw, a second guide member restricting the A slider's movement along the axial direction of the A screw, a support rod hinged to the top of the A slider, a B slider hinged to the upper end of the support rod, a third guide member restricting the B slider's movement along the length of the column, and a damping spring fixedly connected to the top of the B slider, the top of the damping spring being fixedly connected to the support column.

[0014] Preferably, the railing consists of an inner tube and an outer tube, with part of the inner tube inserted into the outer tube, and the inner tube can move along its axial direction.

[0015] Preferably, the connecting mechanism includes a mounting base, with two connectors symmetrically mounted at both the upper and lower ends of the mounting base. The connectors are used to clamp and fix the ends of the railing. The mounting base can rotate around the axis of the support column. The mounting base is connected to a buffer mechanism for buffering the impact force in the rotation direction of the mounting base.

[0016] Preferably, the connector includes a support rotatably mounted on a mounting base, and a locking element for locking the inner tube end / outer tube end is rotatably mounted on the support.

[0017] Preferably, the locking element includes a sleeve with a locking screw threaded onto it, the axis of which is perpendicular to the axis of the sleeve.

[0018] Preferably, the buffer mechanism includes a connecting plate that is slidably connected to the inside of the mounting base, the bottom of the connecting plate being rotatably connected to the top of the support column, and a torsion spring being fixedly connected to the inner side of the connecting plate, with one end of the torsion spring being fixedly connected to the support column.

[0019] Preferably, the moving drive mechanism includes a face gear fixedly mounted on the support frame. The central axis of the face gear is collinear with the axis of the A rotating shaft. A transmission gear meshes with one side of the face gear. A C screw is fixedly connected inside the transmission gear. A sleeve is threadedly connected to the C screw. The top end of the sleeve is rotatably connected to the mounting base. The outside of the sleeve is slidably connected to the support column.

[0020] The beneficial effects of this invention are as follows:

[0021] 1. The temporary protective device for prefabricated stairs described in this invention is connected to the clamp plate and the limiting frame by a B-shaft, so that the upper surface of the clamp plate can be completely fitted with the bottom surface of the stairs, which can adapt to prefabricated stairs with different inclinations. The clamp plate is effectively fixed to the bottom of the support frame and the stairs without drilling, and can effectively support the support column.

[0022] 2. The temporary protective device for a prefabricated staircase of the present invention, when the angle of the support column is adjusted, the second guide member limits the A slider, rotates the A screw, the A screw drives the A slider to move along the A screw axis, the A slider drives the bottom end of the support rod to move, and then the support rod pulls the B slider, the B slider drives the support column to rotate around the A rotation axis, so that the top of the support column is biased to the outside of the staircase, so as to reduce the interference of the support column on the handling of large items during construction and reduce the difficulty of handling large items at the staircase;

[0023] 3. The temporary protective device for a prefabricated staircase described in this invention uses a transmission gear and a face gear to mesh, thereby rotating the transmission gear and driving the C-screw to rotate. The sleeve rod is slidably connected to the support column. The rotation of the C-screw drives the sleeve rod to move, and the sleeve rod drives the mounting base to move along the axial direction of the support column. Thus, when the angle of the support column is adjusted, the mounting frame moves, avoiding the reduction of the protective height on the side of the staircase and the reduction of the protective effect after the support column tilts.

[0024] 4. The temporary protective device for prefabricated stairs described in this invention can buffer the railings to a certain extent when impacted, thereby effectively reducing the damage to the railings when subjected to external impact. Furthermore, when the mounting base rotates to its limit position, if the external force is large, the pull rod pushes the support column through the mounting base and connector, the damping spring is compressed, the B slider moves along the axial direction of the support column, and the support column rotates around the A axis, forming a secondary buffer, which improves the buffering effect and extends the service life of the device. Attached Figure Description

[0025] The invention will now be further described with reference to the accompanying drawings.

[0026] Figure 1 This is a schematic diagram of the overall structure provided by an embodiment of the present invention;

[0027] Figure 2 This is a schematic diagram showing the combination of the support frame, fixing mechanism, support column, adjustment drive mechanism and connecting mechanism provided in the embodiments of the present invention;

[0028] Figure 3 This is a schematic diagram of the mounting base and connector assembly according to an embodiment of the present invention;

[0029] Figure 4 This is a partial cross-sectional structural schematic diagram provided in an embodiment of the present invention;

[0030] Figure 5 This is a schematic diagram of the mobile drive mechanism structure provided in an embodiment of the present invention;

[0031] Figure 6 This is provided by an embodiment of the present invention. Figure 4 Enlarged structural diagram at point A in the diagram;

[0032] Figure 7 This is provided by an embodiment of the present invention. Figure 4 A magnified structural diagram at point B in the diagram.

[0033] In the diagram: 1. Support frame; 2. Fixing mechanism; 21. Limiting frame; 22. Clamping plate; 23. Clamping drive component; 231. Outer sleeve; 232. Inner sleeve; 233. Screw B; 3. Support column; 4. Adjustment drive mechanism; 41. Screw A; 42. Slider A; 43. Support rod; 44. Slider B; 45. Damping spring; 5. Railing; 51. Inner tube; 52. Outer tube; 6. Connecting mechanism; 61. Mounting base; 62. Connector; 621. Support base; 622. Locking component; 6221. Sleeve; 6222. Locking screw; 63. Buffer mechanism; 631. Connecting plate; 632. Torsion spring; 7. Moving drive mechanism; 71. Sleeve rod; 72. Face gear; 73. Transmission gear; 74. Screw C. Detailed Implementation

[0034] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0035] like Figures 1 to 2 As shown in the embodiment of the present invention, a temporary protective device for a prefabricated staircase includes multiple support frames 1 arranged along both sides of the staircase tread, and the support frames 1 are connected to a fixing mechanism 2 for connecting and fixing them to the staircase.

[0036] Support column 3 is rotatably connected to support frame 1 via pivot A. Support column 3 can rotate around pivot A from a position perpendicular to the stair tread to the outside of the stair tread. Support column 3 is connected to an adjustment drive mechanism 4 that drives it to rotate around pivot A.

[0037] Railing 5, which is used to connect two adjacent support columns 3;

[0038] The connecting mechanism 6 is used to fix the end of the railing 5. The connecting mechanism 6 is connected to the moving drive mechanism 7. When the adjusting drive mechanism 4 drives the support column 3 to rotate around axis A, the moving drive mechanism 7 drives the connecting mechanism 6 to move along the length direction of the support column 3.

[0039] like Figure 2 and Figure 4 As shown, in one embodiment of the present invention, the fixing mechanism 2 includes a limiting frame 21, and a clamping plate 22 is rotatably connected to the side of the limiting frame 21 via a B-axis. The limiting frame 21 is connected to a clamping drive member 23 that drives it to move in a direction perpendicular to the stair tread.

[0040] In one embodiment of the present invention, the clamping drive member 23 includes an outer sleeve 231 fixedly connected to the bottom of the support frame 1, an inner sleeve 232 slidably connected inside the outer sleeve 231, the bottom end of the inner sleeve 232 being fixedly connected to the limiting frame 21, and a B screw 233 threadedly connected inside the inner sleeve 232, the top end of the B screw 233 being rotatably connected to the support frame 1.

[0041] The bottom surface of the support frame 1 is in contact with the stair tread. Since the inner sleeve 232 and the outer sleeve 231 are slidably connected, the inner sleeve 232 can only move along its axial direction. Rotating the B screw 233 causes the inner sleeve 232 to move upward along its axial direction, that is, to move in a direction perpendicular to the stair tread. The inner sleeve 232 causes the limiting frame 21 to move upward. When the limiting frame 21 moves, it causes the clamping plate 22 to move. Since the clamping plate 22 and the limiting frame 21 are rotatably connected through the B shaft, the upper surface of the clamping plate 22 can be completely in contact with the bottom surface of the stair, which can adapt to prefabricated stairs with different inclinations. The clamping plate 22 is effectively fixed to the bottom of the support frame 1 and the stairs without drilling. It can effectively support the support column 3. Then, the adjacent support column 3 is connected through the connecting mechanism 6 and the railing 5, which can effectively protect the side of the stairs and prevent people from falling from the side of the stairs when carrying out construction or moving objects.

[0042] like Figure 2 and Figure 4As shown, in one embodiment of the present invention, the adjustment drive mechanism 4 includes an A screw 41 rotatably mounted on a support frame 1, an A slider 42 externally threaded to the A screw 41, a second guide member restricting its axial movement along the A screw 41, a support rod 43 hinged to the top of the A slider 42, a B slider 44 hinged to the upper end of the support rod 43, a third guide member restricting its movement along the length of the column, and a damping spring 45 fixedly connected to the top of the B slider 44, the top of the damping spring 45 being fixedly connected to the support column 3.

[0043] In one embodiment of the present invention, the second guide member is a guide rail disposed on the support frame 1, and the bottom of slider A 42 is slidably connected to the guide rail;

[0044] In one embodiment of the present invention, the third guide member is a groove formed on the support column 3, and the inner wall of the groove is slidably connected to B.

[0045] When the angle of the support column 3 needs to be adjusted, the second guide member limits the A slider 42, and rotates the A screw 41, so that the A slider 42 moves away from the support column 3 along the second guide member. The A slider 42 drives the bottom end of the support rod 43 to move, and then the support rod 43 pulls the B slider 44. The B slider 44 drives the support column 3 to rotate around the A axis, so that the top of the support column 3 is biased towards the outside of the stairs, so as to reduce the interference of the support column 3 on the handling of large items during construction and reduce the difficulty of handling large items at the stairs.

[0046] like Figure 1 As shown, in one embodiment of the present invention, the railing 5 is composed of an inner tube 51 and an outer tube 52, a portion of the inner tube 51 is inserted into the outer tube 52, and the inner tube 51 can move along its axial direction.

[0047] like Figures 2 to 4 and Figure 7 As shown, in one embodiment of the present invention, the connecting mechanism 6 includes a mounting base 61, and two connectors 62 are symmetrically mounted at both the upper and lower ends of the mounting base 61. The connectors 62 are used to clamp and fix the ends of the railing 5. The mounting base 61 can rotate around the axis of the support column 3. The mounting base 61 is connected to a buffering mechanism 63 for buffering the impact force in the rotation direction of the mounting base 61.

[0048] In one embodiment of the present invention, the connector 62 includes a support 621 rotatably mounted on the mounting base 61, and a locking member 622 for locking the end of the inner tube 51 or the end of the outer tube 52 is rotatably mounted on the support 621.

[0049] In one embodiment of the present invention, the locking member 622 includes a sleeve 6221, on which a locking screw 6222 is threadedly connected, and the axis of the locking screw 6222 is perpendicular to the axis of the sleeve 6221.

[0050] When installing the railing 5, simply insert the end of the inner tube 51 or the outer tube 52 of the railing 5 into the sleeve 6221 and rotate the locking screw 6222. The end of the locking screw 6222 will press against the end of the inner tube 51 or the outer tube 52, thereby fixing the end of the inner tube 51 or the outer tube 52.

[0051] When adjusting the angle of a support column 3, the angles of its adjacent support columns 3 are fixed. When the support column 3 rotates around the axis of rotation A, the support column 3 drives the mounting base 61 to rotate around the axis of rotation A. One end of the railing 5 between two adjacent support columns 3 will move with the mounting base 61 on the rotating support column 3. The mounting base 61 will rotate a certain angle under the pull of the pull rod 5. Since the sleeve 6221 is rotatably connected to the support base 621, and the support base 621 is rotatably connected to the mounting base 61, the sleeve 6221 can rotate in two directions to adapt to the change of the angle of the railing 5 when the mounting base 61 rotates. The railing 5 is composed of the telescopic structure of the inner tube 51 and the outer tube 52. When the angle of the railing 5 changes, its length also changes accordingly. Thus, the angle of a single support column 3 can be adjusted individually to adapt to the space required when handling large items, and the adjustment efficiency is higher.

[0052] like Figure 4 and Figure 7 As shown, in one embodiment of the present invention, the buffer mechanism 63 includes a connecting plate 631 that is slidably connected to the inside of the mounting base 61. The bottom of the connecting plate 631 is rotatably connected to the top of the support column 3. A torsion spring 632 is fixedly connected to the inner side of the connecting plate 631. One end of the torsion spring 632 is fixedly connected to the support column 3.

[0053] When the support column 3 is reset after the angle is adjusted, the torsion spring 632 drives the mounting base 61 to rotate and reset. When the railing 5 is impacted by an external force, the railing 5 pushes the sleeve 6221 and the support base 621 to drive the mounting base 61 to rotate. The mounting base 61 drives the connecting plate 631 to rotate. The connecting plate 631 compresses the torsion spring 632. During this process, the railing 5 can be buffered to a certain extent when it is impacted, thereby effectively reducing the damage to the railing 5 when it is impacted by an external force.

[0054] Furthermore, when the mounting base 61 rotates to its limit position, if the external force is large, the railing 5 pushes the support column 3 through the mounting base 61 and the connector 62, the damping spring 45 is compressed, the B slider 44 moves along the axis of the support column 3, and the support column 3 rotates around the axis of the A rotating shaft, forming a secondary buffer, which makes the buffering effect better and extends the service life of the equipment.

[0055] like Figures 4 to 6 As shown, in one embodiment of the present invention, the moving drive mechanism 7 includes a face gear 72 fixedly mounted on the support frame 1. The central axis of the face gear 72 is collinear with the axis of the rotating shaft A. A transmission gear 73 meshes with one side of the face gear 72. A C screw 74 is fixedly connected inside the transmission gear 73. A sleeve rod 71 is threadedly connected to the outside of the C screw 74. The top end of the sleeve rod 71 is rotatably connected to the mounting base 61. The outside of the sleeve rod 71 is slidably connected to the support column 3.

[0056] When the support column 3 is adjusted at an angle, the transmission gear 73 rotates around the axis of rotation A with the support column 3, while the face gear 72 is fixed. The transmission gear 73 meshes with the face gear 72, thereby rotating the transmission gear 73 and driving the C screw 74 to rotate. The sleeve rod 71 is slidably connected to the support column 3. The rotation of the C screw 74 drives the sleeve rod 71 to move. The sleeve rod 71 drives the mounting seat 61 to move along the axial direction of the support column 3, thereby causing the mounting seat 61 to rise when the support column 3 is adjusted at an angle. This prevents the height of the side protection of the stairs from decreasing after the support column 3 tilts, thus reducing the protection effect.

[0057] When the support column 3 is impacted by an external force, the damping spring 45 is compressed, the slider B 44 moves along the axial direction of the support column 3, and the support column 3 rotates around the axis of rotation A. This reduces the damage to the support column 3 and the mounting base 61 when they are impacted by an external force. Similarly, when the support column 3 rotates to buffer the impact of the external force, the mounting base 61 rises to prevent the support column 3 from tilting and reducing the height of the side protection of the stairs.

[0058] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A temporary protective device for a prefabricated staircase, characterized in that, Includes multiple support frames (1) installed along the stair treads, and the support frames (1) are connected to a fixing mechanism (2) for connecting and fixing them to the staircase. Support column (3) is rotatably connected to support frame (1) via A pivot. Support column (3) can rotate around A pivot axis from a position perpendicular to the stair tread to the outside of the stair tread. Support column (3) is connected to adjustment drive mechanism (4) that drives it to rotate around A pivot axis. The railing (5) is used to connect two adjacent support columns (3); The connecting mechanism (6) is used to fix the end of the railing (5). The connecting mechanism (6) is connected to the moving drive mechanism (7). When the adjusting drive mechanism (4) drives the support column (3) to rotate around the A axis, the moving drive mechanism (7) drives the connecting mechanism (6) to move along the length direction of the support column (3). The adjustment drive mechanism (4) includes an A screw (41) rotatably mounted on a support frame (1), an A slider (42) threadedly connected to the outside of the A screw (41), a second guide member connecting the A slider (42) to restrict its axial movement along the A screw (41), a support rod (43) hinged to the top of the A slider (42), a B slider (44) hinged to the upper end of the support rod (43), a third guide member connecting the B slider (44) to restrict its movement along the length of the column, a damping spring (45) fixedly connected to the top of the B slider (44), and the top of the damping spring (45) fixedly connected to the support column (3). The moving drive mechanism (7) includes a face gear (72) fixedly mounted on the support frame (1). The central axis of the face gear (72) is collinear with the axis of the A rotating shaft. A transmission gear (73) meshes with one side of the face gear (72). A C screw (74) is fixedly connected inside the transmission gear (73). A sleeve rod (71) is threadedly connected to the outside of the C screw rod (74). The top of the sleeve rod (71) is rotatably connected to the mounting base (61). The outside of the sleeve rod (71) is slidably connected to the support column (3).

2. The temporary protective device for a prefabricated staircase according to claim 1, characterized in that: The fixing mechanism (2) includes a limiting frame (21), a clamping plate (22) is rotatably connected to the side of the limiting frame (21) via a B-axis, and the limiting frame (21) is connected to a clamping drive (23) that drives it to move in a direction perpendicular to the stair tread.

3. The temporary protective device for a prefabricated staircase according to claim 2, characterized in that: The clamping drive component (23) includes an outer sleeve (231) fixedly connected to the bottom of the support frame (1), an inner sleeve (232) slidably connected inside the outer sleeve (231), the bottom end of the inner sleeve (232) fixedly connected to the limit frame (21), and a B screw (233) threadedly connected inside the inner sleeve (232), the top end of the B screw (233) rotatably connected to the support frame (1).

4. A temporary protective device for a prefabricated staircase according to claim 3, characterized in that: The railing (5) is composed of an inner tube (51) and an outer tube (52). Part of the inner tube (51) is inserted into the outer tube (52), and the inner tube (51) can move along its axial direction.

5. A temporary protective device for a prefabricated staircase according to claim 4, characterized in that: The connecting mechanism (6) includes a mounting base (61). Two connectors (62) are symmetrically installed at both the upper and lower ends of the mounting base (61). The connectors (62) are used to clamp and fix the end of the railing (5). The mounting base (61) can rotate around the axis of the support column (3). The mounting base (61) is connected to a buffer mechanism (63) for buffering the impact force in the rotation direction of the mounting base (61).

6. A temporary protective device for a prefabricated staircase according to claim 5, characterized in that: The connector (62) includes a support (621) rotatably mounted on a mounting base (61), and a locking element (622) for locking the end of the inner tube (51) / the end of the outer tube (52) is rotatably mounted on the support (621).

7. A temporary protective device for a prefabricated staircase according to claim 6, characterized in that: The locking component (622) includes a sleeve (6221) with a locking screw (6222) threaded onto the sleeve (6221) and the axis of the locking screw (6222) being perpendicular to the axis of the sleeve (6221).

8. A temporary protective device for a prefabricated staircase according to claim 4, characterized in that: The buffer mechanism (63) includes a connecting plate (631) that is slidably connected to the inside of the mounting base (61). The bottom of the connecting plate (631) is rotatably connected to the top of the support column (3). A torsion spring (632) is fixedly connected to the inside of the connecting plate (631). One end of the torsion spring (632) is fixedly connected to the support column (3).

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