A building protection frame stair tread

Abstract

The present invention discloses a stair tread of a building protection frame and a method for using the same. The rear portion of the tread is fixed with a horizontal rear slide, and the front portion is fixed with a horizontal front slide. The rear slide is rotatably connected to a horizontal bidirectional screw. The external threads of the left and right portions of the bidirectional screw are in opposite directions, and the left and right portions are each threadedly connected to a horizontal rear slider. The two rear sliders are respectively slidably connected and rotatably connected to the rear slide, and the bottom ends of the two rear sliders are respectively fixed with rear support rods. The present invention uses a steel pipe commonly used in steel pipe racks for support. Then, through the threaded connection of the main locking pipe and the rear support tube, the rear support tube can push the semi-locking plate to hold the outer wall of the steel pipe, thereby limiting the position of the main locking pipe and the rear support tube relative to the steel pipe. The restriction of the rear slider by the bidirectional screw can prevent the rear support tube from moving along the steel pipe set at an angle, thereby also limiting the position of the rear support tube relative to the steel pipe.

Description

Technical Field

[0001] The present invention relates to the technical field of building construction, in particular to a stair tread of a building protection frame and a use method thereof. Background Art

[0002] During the construction process, in order to facilitate construction and ensure construction safety, various steel pipe protection frames are often set up. These steel pipe protection frames mainly use various connectors and fasteners to connect and fasten steel pipes to meet certain load-bearing requirements. In order to facilitate construction workers to reach work surfaces at different heights, temporary stairs are often built using steel pipes and stair treads. When building traditional temporary stairs, in order to stably support the stair treads and maintain their balance, each stair tread often needs to be supported by two or more horizontal steel pipes. For example, the assembled steel pipe frame stair treads and stairs provided by the Chinese invention patent with application number 201510854134.4 require a tread frame composed of a pair of horizontal bars to support the treads when in use. This results in a large number of steel pipes used in the temporary staircase, which increases its own weight and increases the requirements for the supporting performance of the supporting components. In the prior art, In order to facilitate the construction of temporary stairs and to enable the temporary stairs to be reused multiple times and easy to disassemble and assemble, the main load-bearing components are often designed as special components. For example, in the above-mentioned Chinese invention patent, in order to support the treads to construct the stairs, a tread frame and a support column are used. Compared with the components of the widely used steel pipe guard frame, the combination of the tread frame and the support column has not been widely used and requires special manufacturing. It is difficult to adapt the stair treads (or stair treads of the same type) to the components of the widely used steel pipe guard frame. Therefore, this special load-bearing component hinders the widespread use of the stair treads, highlighting the shortcomings of the existing technology. Summary of the Invention

[0003] The object of the present invention is to provide a building protection frame stair tread to solve the above technical problems.

[0004] To achieve the above-mentioned purpose, the present invention adopts the following technical solutions:

[0005] A building protection frame stair tread, comprising a tread, a rear slide, a front slide, a bidirectional screw rod, and a rear slider. The rear portion of the tread is fixed with a horizontal rear slide, and the front portion is fixed with a horizontal front slide. The rear slide is rotatably connected to a horizontal bidirectional screw rod. The external threads of the left and right portions of the bidirectional screw rod rotate in opposite directions, and the left and right portions are each threadedly connected to a horizontal rear slider. The two rear sliders are respectively connected to the rear slide for left and right sliding and rotatable connection. The bottom ends of the two rear sliders are respectively fixed with rear support rods. The left and right portions of the front slide are each connected to the front slider for left and right sliding and rotatable connection. The bottom of the two front sliding blocks are respectively rotatably connected to the front support rods, and two rear support tubes and two front support tubes are installed under the pedal, and the outer walls of the two rear support tubes are respectively fixed with rear support seats, and the two rear support seats are respectively rotatably connected to the two rear support rods, and the outer walls of the two front support tubes are respectively fixed with front support seats, and the two front support rods are respectively hinged to the two front support seats, and the inner walls of the two front support tubes are respectively in contact with the outer walls of the two rear support tubes, and the inner walls of the rear support tubes are in contact with the outer wall of the steel pipe, and the rear support tube and the front support tube are jointly installed with a locking assembly.

[0006] The toggle rod in the same main locking tube is gap-plugged with any isolation fracture, and the rear outer wall of the main locking tube is coaxially threadedly connected to the secondary locking tube.

[0007] The outer wall of the main locking tube is coaxially fixed with a main hexagonal ring, and the outer wall of the secondary locking tube is coaxially fixed with the secondary hexagonal ring.

[0008] Compared with the prior art, the present invention has the following advantages: the present invention uses the steel pipe commonly used in the steel pipe frame for support, and then the threaded connection between the main locking pipe and the rear support tube can make the rear support tube push the semi-locking plate to hug the outer wall of the steel pipe, thereby limiting the position of the main locking pipe and the rear support tube relative to the steel pipe, and the restriction of the rear slider by the two-way screw rod can prevent the rear support tube from moving along the steel pipe set at an angle, thereby also limiting the position of the rear support tube relative to the steel pipe, and then ensuring the stability of the position of the pedal, and by rotating the secondary locking pipe, the position of the front support tube relative to the rear support tube can be changed, thereby changing the spatial angle of the pedal, and then meeting the use needs of the pedal. Since the present device only needs to use a pair of steel pipes for support to build stairs, the number of steel pipes used and their own weight are reduced, the requirements for the performance of the steel pipe are reduced, and the use of special bearing components is avoided to build stairs, thereby improving the adaptability of the present device and facilitating its promotion. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 It is a structural schematic diagram of the present invention.

[0010] Figure 2 Schematic diagram of the bottom structure of the pedal of the present invention.

[0011] Figure 3 This is a schematic diagram of the main locking tube of the present invention, which is cut away from the right side, cooperating with the half locking plate and the auxiliary locking tube.

[0012] Figure 4 Schematic diagram of the angle a of the present invention.

[0013] Figure 5 It is a schematic diagram of the cooperation between the present invention and the steel pipe.

[0014] In the figure: 1. pedal, 2. rear slide, 3. front slide, 4. bidirectional screw, 5. rear slider, 6. rear support rod, 7. front slider, 8. front support rod, 9. rear support cylinder, 10. front support cylinder, 11. rear support seat, 12. front support seat, 13. locking assembly, 14. main locking tube, 15. support sleeve, 16. toggle rod, 17. tapered cavity, 18. semi-locking plate, 19. isolation fracture, 20. secondary locking tube, 21. hexagonal column, 22. main hexagonal ring, 23. secondary hexagonal ring. DETAILED DESCRIPTION

[0015] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0016] like Figure 1-Figure 5 As shown, a building protection frame stair tread comprises a tread 1, a rear slide 2, a front slide 3, a bidirectional screw rod 4, and a rear slider 5. The rear part of the tread 1 is fixed with a horizontal rear slide 2, and the front part is fixed with a horizontal front slide 3. The rear slide 2 is rotatably connected with a horizontal bidirectional screw rod 4. The external threads of the left and right parts of the bidirectional screw rod 4 are rotated in opposite directions, and the left and right parts are each threadedly connected with a horizontal rear slider 5. The two rear sliders 5 are respectively connected to the rear slide 2 for left and right sliding and rotatable connection. The bottom ends of the two rear sliders 5 are respectively fixed with a rear support rod 6. The left and right parts of the front slide 3 are each connected for left and right sliding and rotatable connection with a front slider 7. The bottom of the front slider 7 is rotatably connected to the front support rod 8, and two rear support tubes 9 and two front support tubes 10 are installed under the pedal 1. The outer walls of the two rear support tubes 9 are respectively fixed with rear support seats 11, and the two rear support seats 11 are rotatably connected to the two rear support rods 6. The outer walls of the two front support tubes 10 are respectively fixed with front support seats 12, and the two front support rods 8 are hinged to the two front support seats 12. The inner walls of the two front support tubes 10 are respectively in contact with the outer walls of the two rear support tubes 9, and the inner walls of the rear support tubes 9 are in contact with the outer wall of the steel pipe. The rear support tube 9 and the front support tube 10 are jointly installed with a locking assembly 13.

[0017] The locking assembly 13 includes a main locking tube 14, a support sleeve 15, a toggle rod 16, a tapered cavity 17, a semi-locking plate 18, an isolation fracture 19, and an auxiliary locking tube 20. The rear support tube 9 and the front support tube 10 are both semicircular cylindrical structures. The rear support tube 9 of the semicircular cylindrical structure can be in contact with the outer wall of the steel pipe in the radial direction at any time, thereby facilitating the matching of the rear support tube 9 with the steel pipe. Similarly, the front support tube 10 of the semicircular cylindrical structure can be in contact with the outer wall of the rear support tube 9 in the radial direction at any time, thereby facilitating the matching of the rear support tube 9 with the steel pipe. The front support tube 9 is matched with the rear support tube 9. The front part of the outer wall of the rear support tube 9 is provided with an external thread. The front part of the rear support tube 9 is coaxially threadedly connected with the main locking tube 14. The rear part of the inner cavity of the main locking tube 14 is rotatably connected with a support sleeve 15. The support sleeve 15 is a semicircular cylindrical structure, and a toggle rod 16 is fixed to the middle part of the front end. The support sleeve 15 of the semicircular cylindrical structure can cooperate with the rear support tube 9 when the rear support tube 9 is threadedly connected to the main locking tube 14, so that the rear support tube 9 can push the support tube 9 when the main locking tube 14 is rotated. The sleeve 15 rotates, thereby utilizing the gap between the toggle rod 16 and the isolation fracture 19 to continuously toggle the two half locking plates 18 so that they rotate in the tapered cavity 17. Since the toggle rod 16 is in the middle of the front end of the support sleeve 15, it can ensure that the front end of the rear support cylinder 9 always faces the rear ends of the two half locking plates 18, thereby ensuring that the rear support cylinder 9 can push the two half locking plates 18 when pushing the half locking plates 18, thereby ensuring the half locking plates 18 have a tight hold on the steel pipe. The middle of the main locking tube 14 is in the The cavity is provided with a conical cavity 17, which is in the shape of an inverted cone with a small front part and a large rear part. The conical cavity 17 has two semi-locking plates 18 built in. The semi-locking plates 18 are incomplete conical cylindrical structures, and the outer walls can fit in contact with the inner walls of the conical cavity 17. Two isolation fractures 19 are provided between the two semi-locking plates 18 in the same conical cavity 17. The toggle rod 16 in the same main locking tube 14 is gap-connected with any isolation fracture 19, and the rear outer wall of the main locking tube 14 is coaxially threadedly connected with a secondary locking tube 20.

[0018] The upper part of the rear slide groove 2 and the upper part of the front slide groove 3 both protrude from the top of the pedal 1. The protruding rear slide groove 2 and front slide groove 3 can help enhance the anti-slip effect of the pedal 1. The left and right ends of the bidirectional screw rod 4 are coaxially fixed with a hexagonal column 21, and the hexagonal column 21 can facilitate the rotation of the bidirectional screw rod 4. The main locking tube 14 and the secondary locking tube 20 are gap-plugged with the steel pipe. The front support tube 10 can be plugged into the secondary locking tube 20, and the front end of the front support seat 12 can conflict with the rear end of the secondary locking tube 20. When the rear support tube 9 is threadedly connected to the main locking tube 14, its front end can conflict with the rear ends of the two half locking plates 18. After the front end of the rear support tube 9 conflicts with the rear end of the semi-locking plate 18, it can further push the semi-locking plate 18 to move forward along the conical cavity 17 and make the two half locking plates 18 approach each other so that the semi-locking plate 18 contacts and fits with the outer circumferential wall of the steel pipe. When the semi-locking plate 18 is at the rear of the conical cavity 17, the gap between the two can allow the steel pipe to pass freely through the conical cavity 17. A main hexagonal ring 22 is coaxially fixed to the outer wall of the main locking tube 14, and a secondary hexagonal ring 23 is coaxially fixed to the outer wall of the secondary locking tube 20. The main hexagonal ring 22 and the secondary hexagonal ring 23 can easily rotate the main locking tube 14 and the secondary hexagonal ring 23.

[0019] The method for using the stair treads of the building protection frame of the present invention is as follows: when using, a pair of steel pipes of appropriate length are selected according to the size of the stairs to be used, and then the two ends of the steel pipes are respectively installed on the two working surfaces of the upper and lower floors, and fastened by fasteners so that they are arranged in an "eight"-shaped acute angle. Before fastening the steel pipes, the number of treads 1 to be used is calculated, and then the corresponding number of locking assemblies 13 are first inserted into the two steel pipes with a gap, and then the treads 1 are installed one by one from bottom to top. Since the front support tube 10 and the rear support tube 9 are both semicircular cylindrical structures, the rear support tube 9 can be placed on the outer wall of the steel pipe (here Previously, the hexagonal column 21 can be rotated by a tool to rotate the bidirectional screw rod 4, thereby driving the two rear sliders 5 to move left and right, thereby adjusting the position of the rear support tube 9, which is convenient for the placement of the rear support tube 9). Then, the main hexagonal ring 22 at the bottom is rotated by a tool to rotate the main locking tube 14 at the bottom and threadedly connected to the rear support tube 9. As the main locking tube 14 is threadedly connected to the rear support tube 9, the rear support tube 9 will push the two half locking plates 18 in the tapered cavity 17 forward, and finally the tapered cavity 17 is used to squeeze the half locking plates 18 so that the half locking plates 18 are tightly attached to the outer wall of the steel pipe, and then the half locking can be made. The plate 18, the main locking tube 14 and the rear support tube 9 remain stationary compared to the steel tube, and then the front slider 7 is manually pushed to adjust the left and right positions of the front support tube 10, and then the front support tube 10 is inserted into the secondary locking tube 20 along the rear support tube 9, and the angle a between the front support rod 8 and the steel tube is made greater than ninety degrees, so that the front support seat 12 can automatically move forward under the action of gravity and make its front end contact with the rear end of the secondary locking tube 20, and then the secondary hexagonal ring 23 is rotated by using a tool (while keeping the angle a greater than ninety degrees), so that the secondary hexagonal ring 23 can be used to drive the secondary locking tube 20 to rotate and move axially compared to the steel tube. , and then the position of the front support seat 12 relative to the steel pipe can be changed, thereby changing the spatial angle of the pedal 1, and then meeting the use needs of the pedal 1 (such as keeping it horizontal). Similarly, the remaining pedals 1 can be installed in this way to obtain a temporary staircase. Since the steel pipe is placed at an angle and the rear slider 5 is threadedly connected by the bidirectional screw rod 4, the bidirectional screw rod 4 can restrain the rear slider 5. The spacing of the rear slider 5 is limited, thereby limiting the spacing of the rear support tube 9, and then preventing the rear support tube 9 from moving down along the steel pipe, thereby ensuring the stability of the position of the pedal 1.

[0020] The above is a preferred embodiment of the present invention. For ordinary technicians in this field, based on the teachings of the present invention, without departing from the principles and spirit of the present invention, changes, modifications, substitutions and variations made to the implementation methods are still within the scope of protection of the present invention.

Claims

1. A stair tread of a building protection frame, comprising a tread (1), a rear slide (2), a front slide (3), a bidirectional screw (4), and a rear slider (5), wherein the rear portion of the tread (1) is fixed with a horizontal rear slide (2), and the front portion is fixed with a horizontal front slide (3), the rear slide (2) is rotatably connected to a horizontal bidirectional screw (4), the external threads of the left and right portions of the bidirectional screw (4) are screwed in opposite directions, and the left and right portions are each threadedly connected to a horizontal rear slider (5), characterized in that: The two rear sliders (5) are respectively connected to the rear slide groove (2) in a sliding manner and in a rotational manner. The bottom ends of the two rear sliders (5) are respectively fixed with rear support rods (6). The left and right parts of the front slide groove (3) are respectively connected to the front sliders (7) in a sliding manner and in a rotational manner. The bottoms of the two front sliders (7) are respectively connected to the front support rods (8). Two rear support cylinders (9) and two front support cylinders (10) are installed under the pedal (1). The outer walls of the two rear support cylinders (9) are respectively fixed with rear support seats (1 1), the two rear support seats (11) are rotatably connected to the two rear support rods (6), the outer walls of the two front support cylinders (10) are fixed with front support seats (12), the two front support rods (8) are hinged to the two front support seats (12), the inner walls of the two front support cylinders (10) are in contact with the outer walls of the two rear support cylinders (9), the inner wall of the rear support cylinder (9) is in contact with the outer wall of the steel pipe, and the rear support cylinder (9) and the front support cylinder (10) are jointly installed with a locking assembly (13).

2. The stair tread of a building protection frame according to claim 1, characterized in that: The locking assembly (13) includes a main locking tube (14), a support sleeve (15), a toggle rod (16), a tapered cavity (17), a semi-locking plate (18), an isolation fracture (19), and an auxiliary locking tube (20). The rear support tube (9) and the front support tube (10) are both semicircular cylindrical structures. The front portion of the outer wall of the rear support tube (9) is provided with an external thread. The front portion of the rear support tube (9) is coaxially threadedly connected to the main locking tube (14). The rear portion of the inner cavity of the main locking tube (14) is rotatably connected to the support sleeve (15). The support sleeve (15) is a semicircular cylindrical structure, and a toggle rod (16) is fixed to the middle portion of the front end. The main locking tube (14) is provided with an external thread. A conical cavity (17) is provided in the middle inner cavity of the tube (14), and the conical cavity (17) is in the shape of an inverted cone with a small front portion and a large rear portion. Two semi-locking plates (18) are built into the conical cavity (17), and the semi-locking plates (18) are incomplete conical cylindrical structures, and the outer walls can fit in contact with the inner wall of the conical cavity (17). Two isolation fractures (19) are provided between the two semi-locking plates (18) in the same conical cavity (17). The toggle rod (16) in the same main locking tube (14) is spaced and plugged into any isolation fracture (19). The outer wall of the rear portion of the main locking tube (14) is coaxially threadedly connected to a secondary locking tube (20).

3. The stair tread of a building protection frame according to claim 2, characterized in that: The upper part of the rear slide groove (2) and the upper part of the front slide groove (3) both protrude from the top of the pedal (1). The left and right ends of the bidirectional screw rod (4) are coaxially fixed with a hexagonal column (21). The main locking tube (14) and the auxiliary locking tube (20) are spaced and plugged into the steel pipe. The front support tube (10) can be plugged into the auxiliary locking tube (20). The front end of the front support seat (12) can conflict with the rear end of the auxiliary locking tube (20). When the rear support tube (9) is threadedly connected to the main locking tube (14), its front end can conflict with the rear ends of the two half locking plates (18). After the front end of the support tube (9) contacts the rear end of the semi-locking plate (18), the semi-locking plate (18) can be further pushed forward along the conical cavity (17) and the two half locking plates (18) are close to each other so that the semi-locking plate (18) is in contact with the outer circumferential wall of the steel pipe. When the semi-locking plate (18) is at the rear of the conical cavity (17), the gap between the two allows the steel pipe to pass freely through the conical cavity (17). A main hexagonal ring (22) is coaxially fixed to the outer wall of the main locking tube (14), and a secondary hexagonal ring (23) is coaxially fixed to the outer wall of the secondary locking tube (20).

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