Stable support assembled steel structure stair

Abstract

The utility model relates to steel structure stair technical field, concretely is a kind of assembled steel structure stair of stable support, including steel structure platform, the side of steel structure platform is provided with steel structure ladder stand, the surface of steel structure ladder stand is fixedly connected with the pedal of multiple groups equidistant arrangement, the both sides of steel structure ladder stand are provided with guardrail, the surface of steel structure ladder stand is provided with connecting device;Connecting device includes the connecting block of sliding connection with steel structure ladder inner wall, the surface of steel structure platform is fixedly connected with fixed sleeve, the utility model, by setting connecting device, by inserting connecting block into fixed sleeve, and by adjusting part control the movement of two clamping plates in connecting block, make clamping plate insert into the positioning hole in fixed sleeve, reduce the phenomenon of time-consuming and laborious of traditional adoption multiple bolts locking, improve overall ease of use, can reduce loosening simultaneously, clamping plate inserts into the positioning hole of fixed sleeve after forming rigid connection, can improve the stability effect in the process of steel structure ladder stand support.

Description

Technical Field

[0001] This utility model relates to the field of steel structure staircase technology, and in particular to a stable and supported prefabricated steel structure staircase. Background Technology

[0002] Steel structure staircases are a type of staircase with steel as the core load-bearing component. Thanks to the high strength and high toughness of steel, they can adapt to the needs of various architectural scenarios. They are mainly composed of stair beams, stair slabs, platform beams, handrails and other components. Some components can be prefabricated in the factory and then transported to the site for assembly by welding or bolting.

[0003] In our daily work, we have found that when assembling existing prefabricated steel structure staircases with steel structure platforms, the screw holes on the surface of the steel structure staircase are usually aligned with the screw holes on the surface of the steel structure platform, and then multiple bolts are connected to achieve a tight connection. The overall assembly operation is relatively complicated, which affects construction efficiency. At the same time, the bolts are prone to loosening after long-term use. Loose bolts will directly cause the steel structure staircase to shake significantly, making it unable to stably bear the support function and easily causing safety accidents. Utility Model Content

[0004] The purpose of this utility model is to solve the problems in the existing technology, such as the cumbersome overall assembly operation, which affects construction efficiency, and the fact that bolts are prone to loosening after long-term use. Loose bolts will directly cause the steel structure staircase to shake significantly, making it unable to stably bear the support function and easily causing safety accidents. Therefore, this utility model proposes a prefabricated steel structure staircase with stable support.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a stable and supported prefabricated steel structure staircase, including a steel structure platform, a steel structure ladder frame provided on one side of the steel structure platform, multiple sets of equally spaced treads fixedly connected to the surface of the steel structure ladder frame, guardrails provided on both sides of the steel structure ladder frame, and a connecting device provided on the surface of the steel structure ladder frame. The connecting device includes a connecting block that is slidably connected to the inner wall of the steel structure ladder frame. A fixing sleeve is fixedly connected to the surface of the steel structure platform. The connecting block is inserted into the inner wall of the fixing sleeve. Two locking plates are slidably connected to the inner wall of the fixing sleeve. Multiple positioning holes are provided on the inner wall of the fixing sleeve for the locking plates to be inserted. An adjustment part is provided on the surface of the connecting block for controlling the movement of the two locking plates. A through hole is provided on the surface of the steel structure ladder frame for the user to operate the adjustment part. A positioning part is provided on the surface of the steel structure ladder frame for positioning the connecting block. Through the above components, during use, the connecting block can be inserted into the fixing sleeve. Then, the adjustment part can be contacted through the through hole. The adjustment part controls the movement of the two locking plates in the inner wall of the connecting block, so that the locking plates are inserted into the multiple positioning holes in the inner wall of the fixing sleeve, realizing positioning assembly, reducing the easy loosening of bolt assembly, and making the overall support more stable.

[0006] Preferably, the adjustment part includes a bidirectional screw that is rotatably connected to the inner wall of the connecting block. One end of the bidirectional screw is fixedly connected to a knob, which is located inside the through hole. Through the above-mentioned components, the bidirectional screw can be rotated by the knob, and the bidirectional screw can drive the clamping plate to move in the connecting block to realize the adjustment operation.

[0007] Preferably, the card plate is composed of a rectangular plate and a plurality of cylindrical rods fixed on the surface of the rectangular plate.

[0008] Preferably, the inner wall of the steel structure ladder is fixedly connected to two stabilizing rods, which are slidably connected to the inner wall of the connecting block. Through the above-mentioned components, the stabilizing rods can improve the stability of the connecting block when it moves.

[0009] Preferably, the positioning part includes a positioning screw that is threaded to the inner wall of both sides of the steel structure ladder frame. Two limiting holes are opened on both sides of the connecting block. The positioning screw is inserted into the inner wall of the limiting hole. Through the above components, when the connecting block is pushed to move and insert into the fixing sleeve or when the connecting block is pushed to move and retract, the positioning screw can be rotated so that the positioning screw is inserted into the limiting hole in the corresponding position, and positioning can be achieved respectively.

[0010] Preferably, the surfaces of the multiple sets of pedals are provided with auxiliary devices, the auxiliary devices including auxiliary plates, the auxiliary plates being fixedly connected to the surfaces of the multiple sets of pedals, and the surfaces of the auxiliary plates being fixedly connected to multiple sets of support legs. Through the above components, the multiple sets of support legs, in conjunction with the auxiliary plates, can support the multiple sets of pedals, thereby improving the overall strength of the pedals.

[0011] Preferably, the support leg includes multiple threaded sleeves fixed to the surface of the auxiliary plate. The inner wall of the threaded sleeve is threaded with a support screw, and the lower end of the support screw is fixedly connected to a support ring. Through the above components, the support screw can be rotated in the threaded sleeve, and the support screw drives the support ring to contact the ground, thereby realizing the support operation.

[0012] Compared with the prior art, the advantages and positive effects of this utility model are as follows: In this utility model, by setting a connecting device, the connecting block is inserted into the fixed sleeve, and the two clamping plates inside the connecting block are moved by the adjusting part, so that the clamping plates are inserted into the positioning holes inside the fixed sleeve. This reduces the time-consuming and labor-intensive phenomenon of traditional locking with multiple bolts, improves the overall ease of use, and reduces loosening. After the clamping plates are inserted into the positioning holes of the fixed sleeve, a rigid connection is formed, which can improve the stability of the steel structure ladder support process.

[0013] In this invention, by setting a positioning part, the connecting block can be fixed in two states, namely the extended assembly state and the retracted storage state, by the positioning screw cooperating with the limiting holes at different positions during the movement of the connecting block, thereby further ensuring the stability of the connection process and the idle state.

[0014] In this invention, by setting an auxiliary device, the auxiliary plate on the surface of the pedal cooperates with multiple sets of support legs. By rotating the adjusting support screw in the threaded sleeve, the support ring is brought into contact with the ground, and the pedal is reinforced in conjunction with the auxiliary plate, thereby improving the overall strength. Attached Figure Description

[0015] Figure 1 A three-dimensional structural diagram of a stable and supported prefabricated steel structure staircase is provided for this utility model. Figure 2 This utility model proposes a stable and supported prefabricated steel structure staircase. Figure 1 Schematic diagram of the structure at point A in the middle; Figure 3 This utility model presents a partial structural diagram of a prefabricated steel structure staircase with stable support. Figure 4 This utility model provides a partial sectional view of a prefabricated steel structure staircase with stable support. Figure 5 This utility model presents a schematic diagram of an auxiliary device for a stable support prefabricated steel structure staircase.

[0016] Legend: 1. Steel structure platform; 2. Steel structure ladder frame; 3. Steps; 4. Connecting device; 41. Fixing sleeve; 42. Through hole; 43. Knob; 44. Two-way screw; 45. Clamping plate; 46. Positioning screw; 47. Positioning hole; 48. Stabilizing bar; 49. Connecting block; 410. Limiting hole; 5. Auxiliary device; 51. Auxiliary plate; 52. Support leg; 521. Threaded sleeve; 522. Support screw; 523. Support ring; 6. Guardrail. Detailed Implementation

[0017] Please see Figure 1 - Figure 5 This utility model provides a technical solution: a stable and supported prefabricated steel structure staircase, including a steel structure platform 1, a steel structure ladder frame 2 is provided on one side of the steel structure platform 1, a plurality of equally spaced treads 3 are fixedly connected to the surface of the steel structure ladder frame 2, guardrails 6 are provided on both sides of the steel structure ladder frame 2, and a connecting device 4 is provided on the surface of the steel structure ladder frame 2.

[0018] Specifically, the connecting device 4 includes a connecting block 49 that is slidably connected to the inner wall of the steel structure ladder 2. A fixing sleeve 41 is fixedly connected to the surface of the steel structure platform 1. The connecting block 49 is inserted into the inner wall of the fixing sleeve 41. Two clamping plates 45 are slidably connected to the inner wall of the fixing sleeve 41. The clamping plates 45 are composed of a rectangular plate and multiple cylindrical rods fixed to the surface of the rectangular plate. Multiple positioning holes 47 are provided on the inner wall of the fixing sleeve 41 for the clamping plates 45 to be inserted. An adjustment part is provided on the surface of the connecting block 49 for controlling the movement of the two clamping plates 45. A through hole 42 is provided on the surface of the steel structure ladder 2 to facilitate the user's operation of the adjustment part. A positioning part is provided on the surface of the steel structure ladder 2 for positioning the connecting block 49. Two stabilizing rods 48 are fixedly connected to the inner wall of the steel structure ladder 2 and are slidably connected to the inner wall of the connecting block 49.

[0019] In this implementation scheme: During use, the connecting block 49 can be inserted into the fixing sleeve 41. Then, the adjusting part can be contacted through the through hole 42. The adjusting part controls the movement of the two clamping plates 45 in the inner wall of the connecting block 49, so that the clamping plates 45 are inserted into the multiple positioning holes 47 in the inner wall of the fixing sleeve 41 to achieve positioning and assembly, reduce the easy loosening of bolt assembly, and make the overall support more stable.

[0020] Specifically, the adjustment part includes a bidirectional screw 44 that is rotatably connected to the inner wall of the connecting block 49. One end of the bidirectional screw 44 is fixedly connected to a knob 43, which is located inside the through hole 42.

[0021] In this embodiment, the double-ended screw 44 can be rotated by the knob 43, and the double-ended screw 44 can drive the clamping plate 45 to move in the connecting block 49 to achieve the adjustment operation.

[0022] Specifically, the positioning part includes positioning screws 46 that are threaded to the inner walls of both sides of the steel structure ladder frame 2, and two limiting holes 410 are opened on both sides of the connecting block 49, with the positioning screws 46 inserted into the inner walls of the limiting holes 410.

[0023] In this implementation scheme: when pushing the connecting block 49 to move and insert it into the fixing sleeve 41 or when pushing the connecting block 49 to move and retract it, the positioning screw 46 can be rotated so that the positioning screw 46 is inserted into the limiting hole 410 in the corresponding position, and positioning can be achieved respectively.

[0024] Specifically, the surfaces of multiple sets of pedals 3 are provided with auxiliary devices 5. The auxiliary devices 5 include auxiliary plates 51, which are fixedly connected to the surfaces of multiple sets of pedals 3. Multiple sets of support legs 52 are fixedly connected to the surfaces of the auxiliary plates 51. Each support leg 52 includes multiple threaded sleeves 521 fixed to the surface of the auxiliary plates 51. The inner wall of the threaded sleeves 521 is threaded with a support screw 522, and the lower end of the support screw 522 is fixedly connected with a support ring 523.

[0025] In this implementation scheme: multiple sets of support legs 52, together with auxiliary plates 51, can support multiple sets of pedals 3. When the support legs 52 are supporting, the support screw 522 can be rotated in the threaded sleeve 521. The support screw 522 drives the support ring 523 to contact the ground, thereby realizing the support operation and improving the overall strength of the pedal 3.

[0026] Working principle: During the connection process, the connecting block 49 can first be pushed out. After pushing it out, the positioning screw 46 can be rotated, and the positioning screw 46 can be inserted into the limiting hole 410 at the corresponding position on the surface of the connecting block 49. Then, the connecting block 49 can be inserted into the fixing sleeve 41. After it is fully inserted, the knob 43 and the double-acting screw 44 can be rotated. The double-acting screw 44 can drive the two clamping plates 45 to move. The clamping plates 45 can be inserted into the positioning hole 47 in the inner wall of the fixing sleeve 41, thus realizing the connection and assembly. During disassembly, simply rotate the knob 43 and the double-acting screw 44 to control the clamping plates. Plate 45 is reset and removed from positioning hole 47. After removal, sliding connecting block 49 is moved out of fixing sleeve 41. Then, positioning screw 46 is rotated. Positioning screw 46 can be inserted into limiting hole 410 at corresponding position on surface of connecting block 49 to position connecting block 49 in the retracted state, thus achieving disassembly. During use, multiple support legs 52 in auxiliary plate 51 can also be controlled to rotate support screw 522 in threaded sleeve 521. Support screw 522 drives support ring 523 to contact the ground to achieve support operation, which can improve the overall strength of pedal 3.

Claims

1. A stable, prefabricated steel structure staircase, comprising a steel structure platform (1), characterized in that: A steel structure ladder (2) is provided on one side of the steel structure platform (1). Multiple sets of equally spaced treads (3) are fixedly connected to the surface of the steel structure ladder (2). Guardrails (6) are provided on both sides of the steel structure ladder (2). A connecting device (4) is provided on the surface of the steel structure ladder (2). The connecting device (4) includes a connecting block (49) that is slidably connected to the inner wall of the steel structure ladder (2). A fixing sleeve (41) is fixedly connected to the surface of the steel structure platform (1). The connecting block (49) is inserted into the inner wall of the fixing sleeve (41). Two clamping plates (45) are slidably connected to the inner wall of the fixing sleeve (41). Multiple positioning holes (47) are provided on the inner wall of the fixing sleeve (41). The positioning holes (47) are for the clamping plates (45) to be inserted. An adjustment part is provided on the surface of the connecting block (49) to control the movement of the two clamping plates (45). A through hole (42) is provided on the surface of the steel structure ladder (2) to facilitate the user to operate the adjustment part. A positioning part is provided on the surface of the steel structure ladder (2) to position the connecting block (49).

2. The prefabricated steel structure staircase with stable support according to claim 1, characterized in that: The adjustment part includes a bidirectional screw (44) rotatably connected to the inner wall of the connecting block (49), and a knob (43) is fixedly connected to one end of the bidirectional screw (44), the knob (43) being located inside the through hole (42).

3. The prefabricated steel structure staircase with stable support according to claim 1, characterized in that: The card plate (45) is composed of a rectangular plate and multiple cylindrical rods fixed on the surface of the rectangular plate.

4. The prefabricated steel structure staircase with stable support according to claim 1, characterized in that: The inner wall of the steel structure ladder (2) is fixedly connected to two stabilizing rods (48), and the stabilizing rods (48) are slidably connected to the inner wall of the connecting block (49).

5. A prefabricated steel structure staircase with stable support according to claim 1, characterized in that: The positioning part includes a positioning screw (46) that is threaded to the inner wall of both sides of the steel structure ladder (2). Two limiting holes (410) are opened on both sides of the connecting block (49). The positioning screw (46) is inserted into the inner wall of the limiting hole (410).

6. A prefabricated steel structure staircase with stable support according to claim 1, characterized in that: The surfaces of the multiple sets of pedals (3) are provided with auxiliary devices (5), the auxiliary devices (5) include auxiliary plates (51), the auxiliary plates (51) are fixedly connected to the surfaces of the multiple sets of pedals (3), and the surfaces of the auxiliary plates (51) are fixedly connected with multiple sets of support legs (52).

7. A prefabricated steel structure staircase with stable support according to claim 6, characterized in that: The support leg (52) includes a plurality of threaded sleeves (521) fixed on the surface of the auxiliary plate (51). The inner wall of the threaded sleeve (521) is threaded with a support screw (522), and the lower end of the support screw (522) is fixedly connected with a support ring (523).

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