Adjustable temporary stair

Abstract

The utility model discloses an adjustable temporary stair. The adjustable temporary stair comprises an adjustable stair frame, stepping units, stair railings and connecting rods. The adjustable stair frame comprises cross rods, high stand columns, low stand columns and longitudinal rods, the high stand columns, the low stand columns and the longitudinal rods are made of telescopic rod pieces, the pair of high stand columns and the cross rods are connected to form a high stand column frame of a U-shaped structure, the pair of low stand columns and the cross rods are connected to form a low stand column frame of a U-shaped structure, and the high stand column frame and the low stand column frame are connected into a telescopic frame structure through the pair of longitudinal rods. The pair of stair handrails are symmetrically arranged on two sides of the top of the adjustable stair frame, and two ends of each stair handrail are connected with the top of the high upright post and the top of the low upright post; the multiple sets of step units are sequentially connected to form the stair step, and the stair step is rotatably connected between the high stand column frame and the low stand column frame and connected to the lower portion of the pair of stair handrails through the multiple connecting rods. The utility model relates to the technical field of temporary stairs, and can solve the problem of poor universality of temporary stairs in the prior art.

Description

Technical Field

[0001] The utility model relates to the technical field of temporary stairs, in particular to an adjustable temporary staircase. Background Art

[0002] During the construction process, there is often a height difference between two building components, for example, there is a height difference between a floor slab and an intermediate platform. Before the stairs are constructed, construction workers cannot pass between the two building components, which will affect the construction convenience and progress to a certain extent.

[0003] Most of the temporary stairs in the prior art are fixed steel stairs or folding stairs, which cannot flexibly adjust the height, length and slope of the stairs. For the connection between two components with different height differences, their versatility is poor and they cannot meet different usage requirements. Therefore, it is necessary to provide an adjustable temporary staircase that can solve the problem of poor versatility of temporary stairs in the prior art. Summary of the invention

[0004] The utility model aims to provide an adjustable temporary staircase, which can solve the problem of poor versatility of temporary stairs in the prior art.

[0005] The utility model is achieved in this way:

[0006] An adjustable temporary staircase comprises an adjustable staircase frame, a step unit, a stair handrail and a connecting rod; the adjustable staircase frame comprises a cross bar and a high column, a low column and a longitudinal rod made of telescopic rods, a pair of high columns and a cross bar are connected to form a high column frame with a U-shaped structure, a pair of low columns and a cross bar are connected to form a low column frame with a U-shaped structure, and the high column frame is connected to the low column frame through a pair of longitudinal rods to form a telescopic frame structure; a pair of stair handrails are symmetrically arranged on both sides of the top of the adjustable staircase frame, and the two ends of each stair handrail are respectively connected to the top of the high column and the top of the low column; a plurality of groups of step units are connected in sequence to form stair steps, and the stair steps are rotatably connected between the high column frame and the low column frame, and are connected to the bottom of the pair of stair handrails through a plurality of connecting rods.

[0007] The telescopic rod comprises a first rod and a second rod which are coaxially plugged together. The first rod is provided with an adjusting knob, and the second rod is provided with an adjusting slot along the length direction. The adjusting knob slides through the adjusting slot and locks the first rod on the second rod.

[0008] The step unit comprises a step mounting plate and a step plate body; the step mounting plates of several groups of step units are connected in sequence to form mounting side plates, and a pair of mounting side plates are respectively connected obliquely between a pair of high columns and a pair of low columns; the two sides of one end of several step plate bodies are respectively connected to the pair of mounting side plates at intervals, and the two sides of the other ends of several step plate bodies are respectively connected to the bottom of a pair of stair handrails through connecting rods, so that the several step plate bodies are sequentially arranged between the low column frame and the high column frame.

[0009] The upper end of the connecting rod is fixedly connected to the stair handrail by means of bolts, and the lower end of the connecting rod is connected to the other end of the step plate body via a connecting shaft through a connecting hole.

[0010] The step mounting plate is formed with a mounting groove along the length direction, so that one end side portion of the step plate body can slide along the mounting groove and be locked on the step mounting plate.

[0011] Compared with the prior art, the utility model has the following beneficial effects:

[0012] 1. The utility model is provided with an adjustable staircase frame and a step unit. The size of the adjustable staircase frame can be flexibly adjusted by telescoping the telescopic rod. A corresponding number of step units are installed in the adjustable staircase frame at a certain inclination angle. The length, height and slope can be flexibly adjusted according to actual use requirements. A temporary staircase is formed between two building components with different height differences, which has better adaptability and versatility.

[0013] 2. The utility model is provided with stair handrails and connecting rods, and the stair handrails can be synchronously adjusted according to the extension and contraction of the adjustable stair frame. The connecting rod can horizontally hang the step plate body under the stair handrails, and the connection is reliable and easy to disassemble and assemble, thereby ensuring the safety of the temporary stairs.

[0014] 3. The utility model has a simple structure, is easy to obtain materials and manufacture, can be folded when not in use, reduces the occupied space, is easy to store and transport, and has a low cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is the front view of the adjustable temporary staircase of the utility model (in use);

[0016] Figure 2 It is the front view of the adjustable temporary staircase of the utility model (in the stowed state);

[0017] Figure 3 It is a schematic diagram of the extension of the telescopic rod of the adjustable staircase frame in the adjustable temporary staircase of the utility model;

[0018] Figure 4 It is a schematic diagram of the contraction of the telescopic rod of the adjustable staircase frame in the adjustable temporary staircase of the utility model;

[0019] Figure 5 It is a front view of the utility model in which the step plate body of the adjustable temporary staircase is connected to the stair handrail through a connecting rod;

[0020] Figure 6 It is a structural schematic diagram of the step plate body in the adjustable temporary staircase of the utility model;

[0021] Figure 7 It is a front view of a connecting rod in the adjustable temporary staircase of the utility model.

[0022] In the figure, 101 is a high column, 102 is a low column, 103 is a longitudinal rod, 104 is a first rod, 105 is a second rod, 106 is an adjustment knob, 107 is an adjustment slide, 2 is a step unit, 201 is a step mounting plate, 202 is a step plate body, 203 is a mounting groove, 204 is a connecting shaft, 3 is a stair handrail, 4 is a connecting rod, 401 is a bolt, and 402 is a connecting hole. DETAILED DESCRIPTION

[0023] The utility model is further described below in conjunction with the accompanying drawings and specific embodiments.

[0024] Please see attached Figure 1 and attached Figure 2 , an adjustable temporary staircase, comprising an adjustable staircase frame, a step unit 2, a stair handrail 3 and a connecting rod 4; the adjustable staircase frame comprises a cross bar 108 and a high column 101, a low column 102 and a longitudinal rod 103 made of telescopic rods, a pair of high columns 101 and the cross bar 108 are connected to form a high column frame of a U-shaped structure, a pair of low columns 102 and the cross bar 108 are connected to form a low column frame of a U-shaped structure, and the high column frame is connected to the low column frame through a pair of longitudinal rods 103 to form a telescopic frame structure; a pair of stair handrails 3 are symmetrically arranged on both sides of the top of the adjustable staircase frame, and the two ends of each stair handrail 3 are respectively connected to the top of the high column 101 and the top of the low column 102; a plurality of groups of step units 2 are connected in sequence to form stair steps, and the stair steps are rotatably connected between the high column frame and the low column frame, and are connected to the bottom of the pair of stair handrails 3 through a plurality of connecting rods 4.

[0025] By using telescopic rods with flexible telescopic function to form high columns 101, low columns 102 and longitudinal rods 103, the height, length and slope of the adjustable staircase frame can be adjusted according to actual use conditions, so as to better adapt to the use requirements between building components with different height differences and have good versatility.

[0026] The telescopic frame structure serves as the main load-bearing component of the temporary staircase. According to the slope length of the adjustable staircase frame, a corresponding number of step units 2 are spliced ​​in sequence to form stair treads, and lateral protection is formed on both sides of the stair treads through stair handrails 3 and connecting rods 4 to ensure the safety of the temporary staircase.

[0027] Please see attached Figure 3 and attached Figure 4 The telescopic rod comprises a first rod 104 and a second rod 105 which are coaxially plugged in. The first rod 104 is provided with an adjusting knob 106, and the second rod 105 is provided with an adjusting groove 107 along the length direction. The adjusting knob 106 slides through the adjusting groove 107 and locks the first rod 104 on the second rod 105.

[0028] Preferably, the first rod 104 and the second rod 105 can be made of square steel pipes, and the square steel pipe specifications of the second rod 105 are one size larger than those of the first rod 104 to facilitate the insertion and relative sliding between the first rod 104 and the second rod 105.

[0029] The relative telescopic movement of the first rod 104 and the second rod 105 satisfies the flexible telescopic adjustment function of the telescopic rod, so that the high column 101, the low column 102 and the longitudinal rod 103 can be adjusted to the required length according to actual use requirements, thereby making the size of the telescopic frame structure highly universal and adaptable.

[0030] Please see attached Figure 5 and attached Figure 6 The step unit 2 includes a step mounting plate 201 and a step board body 202; a plurality of groups of step mounting plates 201 of the step units 2 are connected in sequence to form mounting side plates, and a pair of mounting side plates are respectively obliquely connected between a pair of high columns 101 and a pair of low columns 102; the two sides of one end of a plurality of step board bodies 202 are respectively connected to a pair of mounting side plates at intervals, and the two sides of the other ends of a plurality of step board bodies 202 are respectively connected to the bottom of a pair of stair handrails 3 through connecting rods 4, so that the plurality of step board bodies 202 are sequentially arranged between the low column frame and the high column frame.

[0031] Preferably, the step mounting plate 201 can be made of a steel plate, which can be spliced ​​into a mounting side plate by bolts or the like according to the slope length of the temporary staircase and connected between the high column 101 and the low column 102 for mounting the step plate body 202 .

[0032] Preferably, the tread plate body 202 can be made of a patterned steel plate, which has good load-bearing, anti-skid and wear-resistant properties and is not easy to deform or damage. One end of the tread plate body 202 is connected to the mounting side plate by bolts, and the other end of the tread plate body 202 is hoisted under the stair handrail 3 by a connecting rod 4, so that all the tread plate bodies 202 are arranged horizontally and in a stepped shape between the low column frame and the high column frame to form a temporary staircase structure.

[0033] Please see attached Figure 5 To Attachment Figure 7 The upper end of the connecting rod 4 is fixedly connected to the stair handrail 3 by a bolt 401, and the lower end of the connecting rod 4 is connected to the other end of the step plate body 202 through a connecting hole 402 via a connecting shaft 204.

[0034] The length of the connecting rod 4 can be adaptively selected according to the slope of the stairs and the horizontal installation requirements of the tread body 202. The connecting rods 4 are arranged in pairs on both sides of the other end of the tread body 202. The bottom of the pair of connecting rods 4 is respectively integrally formed with connecting holes 402, and the other end of the tread body 202 is integrally formed with connecting shafts 204. The connecting shafts 204 are matched and plugged with the connecting holes 402, which facilitates the reliable connection between the tread body 202 and the connecting rods 4, and the plugging and disassembly are convenient and quick.

[0035] Please see attached Figure 2 and attached Figure 5 The step mounting plate 201 is provided with a mounting groove 203 along the length direction, so that one end side portion of the step plate body 202 can slide along the mounting groove 203 and be locked on the step mounting plate 201 by bolts and nuts.

[0036] The installation groove 203 can provide the tread plate body 202 with high adjustment flexibility during installation, and the installation position and spacing of the tread plate body 202 can be adjusted according to the height, length and slope of the stairs to ensure the use function of the temporary stairs. After the adjustment is in place, the tread plate body 202 can be locked on the tread installation plate 201 by bolts and nuts.

[0037] Please see attached Figure 1 To Attachment Figure 7 The manufacturing and installation adjustment method of the utility model is:

[0038] The second rod 105 and the crossbar 108 are made of a Q235 square steel tube with a size of 100*100mm and a wall thickness of 6mm, the first rod 104 is made of a Q235 square steel tube with a size of 80*80mm and a wall thickness of 6mm, and a high-strength bolt and nut are used as the adjustment knob 106. The first rod 104 and the second rod 105 are relatively slid along the adjustment slide 107, and the first rod 104 and the second rod 105 are locked by bolts and nuts after being adjusted to the right position. A pair of high columns 101 and the crossbar 108 can be prefabricated into a U-shaped high column frame with an integrated structure, and a pair of low columns 102 and the crossbar 108 can be prefabricated into a U-shaped low column frame with an integrated structure.

[0039] According to the height, length and slope of the temporary staircase, the length of each telescopic rod is adjusted, and the length of a pair of high columns 101, a pair of low columns 102 and a pair of longitudinal rods 103 are adjusted in sequence, and the high column frame and the low column frame are connected to the two ends of the pair of longitudinal rods 103 through special fasteners to obtain an adjustable staircase frame that meets the height, length and slope requirements. The greater the height difference between the two building components, the greater the length difference between the high column 101 and the low column 102, the greater the length required for the temporary staircase, the gentler the slope, and the greater the length of the pair of longitudinal rods 103. Conversely, the smaller the height difference between the two building components, the smaller the length difference between the high column 101 and the low column 102, the smaller the length required for the temporary staircase, the steeper the slope, and the smaller the length of the pair of longitudinal rods 103.

[0040] The stair handrail 3 is made of the same telescopic rod as the adjustable stair frame. The length of the telescopic rod of the stair handrail 3 is adjusted according to the slope length of the adjustable stair frame, so that the stair handrail 3 can be installed between the top of the high column 101 and the top of the low column 102. The inclination angle of the stair handrail 3 is consistent with the slope of the temporary stairs, and it is used as a stair handrail.

[0041] The step mounting plates 201 are spliced ​​in sequence by bolts and nuts to form mounting side plates that meet the stair slope length requirements, and a pair of mounting side plates are installed between a pair of high columns 101 and a pair of low columns 102, and are located between two building components with a height difference. According to the spacing requirements of the stair treads and the slope length requirements, a suitable number of step plate bodies 202 are selected, and both sides of one end of the step plate body 202 are respectively installed on a pair of mounting side plates by bolts and nuts. The position and spacing of the step plate body 202 can be flexibly adjusted through the mounting groove 203, thereby ensuring that the spacing of the stair treads meets the use requirements.

[0042] One end of the connecting rod 4 is bolted to the stair handrail 3, and a plurality of equidistant mounting holes or axial mounting grooves can be reserved on the telescopic rod of the stair handrail 3, so as to facilitate the corresponding mounting of the connecting rod 4 above the other end of the tread plate 202. Connecting shafts 204 are arranged on both sides of the other end of the tread plate 202, and a connecting hole 402 is arranged at the lower end of the connecting rod 4, and the connecting shaft 204 is inserted into the connecting hole 402, so that the tread plate 202 is horizontally fixed below the stair handrail 3.

[0043] The connecting rod 4 of a suitable length may be selected or a plurality of connecting holes 402 may be arranged at intervals at the lower part of the connecting rod 4, so as to ensure that the tread plate body 202 is in a horizontal state after being installed between the connecting rod 4 and the mounting side plate, and is more stable and safe when stepped on. All tread plate bodies 202 are installed at intervals along the stair slope to form a stair structure. The installation method of all tread plate bodies 202 is the same, and will not be described one by one here.

[0044] All components are connected and locked with bolts, which are reliable, easy to disassemble and assemble, and can meet the adjustment requirements. The bolts can be ordinary bolts with a grade of 4.8 and a diameter of 10mm, which are low in cost. All components are made of steel materials and painted with 2 layers of anti-rust paint on the surface. The structure has high strength, is not easy to rust and corrode, and has good durability.

[0045] Please see attached Figure 2 When not in use, the first and second rods of the telescopic rod of the adjustable stair frame can be retracted to the shortest, so that the volume of the adjustable stair frame is minimized, and the telescopic rod of the stair handrail is synchronously shortened to between the high column 101 and the low column 102. The step unit 2 can be detached from the connecting rod 4, so that all the step units 2 and the connecting rod 4 can be placed in the adjustable stair frame, reducing the occupied space and facilitating storage and transportation.

[0046] The above are only preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An adjustable temporary staircase, characterized by: The invention comprises an adjustable staircase frame, a step unit (2), a stair handrail (3) and a connecting rod (4); the adjustable staircase frame comprises a cross bar (108) and a high column (101), a low column (102) and a longitudinal rod (103) made of telescopic rods; a pair of high columns (101) are connected with the cross bar (108) to form a high column frame with a U-shaped structure; a pair of low columns (102) are connected with the cross bar (108) to form a low column frame with a U-shaped structure; the high column frame is connected with the pair of longitudinal rods (103) to form a high column frame with a U-shaped structure; 3) is connected to the low column frame to form a telescopic frame structure; a pair of stair handrails (3) are symmetrically arranged on both sides of the top of the adjustable stair frame, and the two ends of each stair handrail (3) are respectively connected to the top of the high column (101) and the top of the low column (102); a plurality of groups of step units (2) are connected in sequence to form stair steps, and the stair steps are rotatably connected between the high column frame and the low column frame, and are connected to the bottom of the pair of stair handrails (3) through a plurality of connecting rods (4).

2. The adjustable temporary staircase according to claim 1 is characterized in that: The telescopic rod comprises a first rod (104) and a second rod (105) which are coaxially plugged in. The first rod (104) is provided with an adjusting knob (106), and the second rod (105) is provided with an adjusting slot (107) along the length direction. The adjusting knob (106) slides through the adjusting slot (107) and locks the first rod (104) on the second rod (105).

3. The adjustable temporary staircase according to claim 1 is characterized in that: The step unit (2) comprises a step mounting plate (201) and a step plate body (202); the step mounting plates (201) of a plurality of groups of step units (2) are connected in sequence to form mounting side plates, and a pair of mounting side plates are respectively connected obliquely between a pair of high columns (101) and a pair of low columns (102); the two sides of one end of a plurality of step plate bodies (202) are respectively connected to the pair of mounting side plates at intervals, and the two sides of the other ends of a plurality of step plate bodies (202) are respectively connected to the bottom of a pair of stair handrails (3) through connecting rods (4), so that the plurality of step plate bodies (202) are sequentially arranged between the low column frame and the high column frame.

4. The adjustable temporary staircase according to claim 3 is characterized in that: The upper end of the connecting rod (4) is fixedly connected to the stair handrail (3) by means of a bolt (401), and the lower end of the connecting rod (4) is connected to the other end of the tread plate body (202) via a connecting shaft (204) through a connecting hole (402).

5. The adjustable temporary staircase according to claim 3 is characterized in that: The step mounting plate (201) is provided with a mounting groove (203) along the length direction, so that one end side portion of the step plate body (202) can slide along the mounting groove (203) and be locked on the step mounting plate (201).

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