Novel combined safety cage ladder

Abstract

The utility model relates to a novel combined safety cage ladder. Existing upper and lower ladder cages are complex in fixing structure and lack of handrails. Therefore, the novel combined safety cage ladder comprises a plurality of ladder cages which are sequentially stacked from bottom to top, each ladder cage comprises a box type frame, a top plate, a bottom plate and a stairway, an adjustable handrail is arranged on an inner side inclined column of the stairway of each ladder cage, a long groove through hole is formed in each of the upper four corners and the lower four corners of each box type frame, and each box type frame is provided with a T-shaped bolt. Each T-shaped bolt comprises a T-shaped screw and a nut, one end of each T-shaped screw is provided with a straight head, the other end of each T-shaped screw is provided with an external thread, the straight heads can extend into the long groove through holes, the T-shaped screws are arranged in the long groove through holes in a one-to-one correspondence mode, and the nuts and the straight heads on the T-shaped screws are clamped on the box type frames of the corresponding vertically adjacent ladder cages respectively. According to the novel combined safety cage ladder, the fixing structure between the upper ladder and the lower ladder is simple, the adjustable handrails can be lifted as required, hoisting is not affected, and the novel combined safety cage ladder is suitable for construction sites.

Description

Technical Field

[0001] The utility model relates to a novel combined safety cage ladder. Background Art

[0002] The Chinese invention patent with the authorization announcement dated June 10, 2022 and the authorization publication number CN 114607176 A discloses an assembled integrated construction protection safety ladder cage, including a safety ladder frame, a ladder frame mechanism is installed on the inner side of the safety ladder frame, the bottom foot plate is fixedly installed on the upper end of the bottom frame through the anti-slip groove, and then the top plate is installed on the inner side of the through-hole through the corresponding inner extension plate of the top plate, and then the bottom foot plate is bolted to the bottom frame and the top plate is bolted to the top frame through the positioning nails, thereby realizing the stable assembly of the steps on the inner side of the safety ladder frame. Through the above operations, the flexible disassembly and assembly of the steps and the safety ladder frame can be realized. The assembled integrated construction protection safety ladder cage also has the following problems:

[0003] 1. Lack of handrails;

[0004] 2. The four corners of the upper and lower ladder cages are fixed by angle plate assemblies and the bolts thereon, and are surrounded by main surface guard nets and side guard nets, which makes it inconvenient to disassemble and assemble the angle plate assemblies and their bolts from inside the ladder cage.

[0005] The Chinese utility model patent with the authorization announcement on May 12, 2023 and the authorization publication number CN 219012075 U discloses a conveniently assembled construction safety ladder cage, including a ladder cage body, the ladder cage body is assembled and connected by a plurality of unit ladder cages, a staircase is arranged inside the unit ladder cage, the unit ladder cage is a rectangular frame, the top and bottom of the unit ladder cage are detachably connected by a connecting device, the connecting device includes a first fastener arranged at the top of the unit ladder cage, and a second fastener cooperating with the first fastener is arranged at the bottom of the unit ladder cage, the first fastener and the second fastener are connected by a clamping device, and the number of connecting parts used is small, which is convenient for disassembly and assembly, but the structure is complex and inconvenient to process. Although the background technology part of the patent specification records the words: "Each frame is equipped with a complete pedestrian ladder and handrails", there is no other content about handrails. The handrails on the stairs marked 101 in the attached drawings of the specification only exist in the middle of the ladder cage, and there are no handrails near the top and bottom of the unit ladder cage. Summary of the invention

[0006] The technical problem to be solved by the utility model is how to overcome the above-mentioned defects of the prior art and provide a new type of combined safety cage ladder with a simple upper and lower ladder cage fixing structure, which does not affect the lifting and the handrail of the lower ladder cage can be extended to the upper ladder cage when in use.

[0007] The ladder system of claim 1, wherein the plurality of ladders are arranged on a plurality of platforms, each of which is connected to a plurality of ladders at a time. On the rod, the top ends of all vertical rods of the inner oblique columns of the same staircase are connected to an oblique rod to form an adjustable handrail. Each box-type frame has a long slot through hole at the upper and lower corners, and the long slot through holes at the upper and lower corners of the box-type frames of the upper and lower adjacent ladder cages correspond to each other one by one, and are respectively equipped with a T-shaped bolt. Each T-shaped bolt includes a T-shaped screw and a nut. Each T-shaped screw is provided with a flat head at one end and an external thread at the other end. The flat head can be inserted into the long slot through hole. The T-shaped screw is inserted into the corresponding long slot through holes, and the nut and the flat head thereon are respectively clamped on the corresponding box-type frames of the upper and lower adjacent ladder cages.

[0008] When hoisting, loosen the fastening screws to lower the adjustable handrail and retract it into the box frame. Figure 6 After the hoisting is completed, take the T-shaped bolts corresponding to the long slot through holes at the four corners of the bottom of the box-type frame of the upper ladder cage, insert the T-shaped bolts from the corresponding long slot through holes, and then turn them 90 degrees, and use the nuts and T-shaped bolts on them to clamp them on the corresponding box-type frames of the upper and lower adjacent ladder cages, and tighten them, as shown in the figure. Figure 4 As shown. Until the four corners of the upper and lower adjacent ladder cages are firmly fixed together by the corresponding T-shaped screws. Then, raise the adjustable handrail to a suitable height, and finally tighten each fastening screw to fix the adjustable handrail. Figure 7 As shown.

[0009] With this design, the fixing structure of the upper and lower ladder cages is simple, and the adjustable handrail retracts during hoisting without affecting the hoisting. After the hoisting is completed, the adjustable handrail is raised and fixed in the appropriate position before use, so that the handrail of the lower ladder cage can be extended to the upper ladder cage, making it convenient for users to climb up and down the stairs.

[0010] As an optimization, the box-type frame above the outer inclined column of the stairs of each cage is fixedly connected with a fixed handrail, which is confined within the box-type frame. With this design, there is also a handrail on the outside of the stairs, which is not confined to the box-type frame and does not affect the hoisting of the cage.

[0011] The new combined safety cage ladder has a simple fixing structure between the upper and lower cages, and the adjustable handrails can be raised and lowered as needed without affecting the lifting, and is suitable for use on construction sites. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The following is a further description of the new combined safety cage ladder in conjunction with the accompanying drawings:

[0013] Figure 1 This is a three-dimensional structural diagram of the new combined safety cage ladder (the adjustable handrails and various T-shaped bolts are omitted);

[0014] Figure 2 It is a three-dimensional schematic diagram of the T-bolt (short) of the new combined safety cage ladder (used to fix the corners of the box-type frame of the upper and lower ladder cages away from the lower end of the stairs);

[0015] Figure 3 It is a three-dimensional schematic diagram of the T-shaped bolt (long) of the new combined safety cage ladder (used to fix the corners of the box-type frame near the lower end of the stairs of the upper and lower ladder cages);

[0016] Figure 4 It is used Figure 2 , 3 The diagram shows a partial enlarged structure of the upper and lower ladder cages fixed with T-bolts and the installation of T-bolts;

[0017] Figure 5 It is a structural schematic diagram of the diagonal rod and each vertical rod constituting the adjustable handrail of the new combined safety cage ladder;

[0018] Figure 6 This is a structural diagram of the hoisting state of the ladder cage of the new combined safety cage ladder (the adjustable handrail is located at a low position and does not affect the hoisting);

[0019] Figure 7 It is a structural schematic diagram of the use state of the ladder cage of the novel combined safety cage ladder (the adjustable handrail is located at a high position for easy gripping).

[0020] In the figure: 1 is a ladder cage, 2 is a top plate, 3 is a bottom plate, 4 is an inclined column, 5 is a horizontal pedal, 6 is a connecting plate, 7 is an L-shaped plate, 8 is a vertical pipe, 9 is a fastening screw, 10 is a vertical rod, 11 is a box frame, 12 is an inclined rod, 13 is a long slot through hole, 14 is a T-shaped bolt, 141 is a T-shaped screw, 142 is a nut, 143 is a flat head, and 15 is a fixed handrail. DETAILED DESCRIPTION

[0021] Implementation method 1: Figure 1-7As shown, the novel combined safety cage ladder comprises a plurality of cages 1, which are stacked in sequence from bottom to top, each cage 1 comprises a box frame 11, a top plate 2, a bottom plate 3 and stairs, the stairs of each cage 1 are located on the same side, the upper and lower ends of the stairs of each cage 1 are respectively connected to the top plate 2 and the bottom plate 3, each staircase comprises two parallel inclined columns 4, a plurality of horizontal pedals 5 are evenly arranged between the two inclined columns 4 from bottom to top, a connecting plate 6 is connected to the top plate 2 of all cages 1, one end of the connecting plate 6 is connected to the top plate 2, and the other end is connected to the box frame 11 on the opposite side, and the connecting plate 6 forms an L-shaped plate 7 with the connected top plate 2.

[0022] (Or a connecting plate 6 is connected to the bottom plate 3 of all elevator cages 1, one end of the connecting plate 6 is connected to the bottom plate 3, and the other end is connected to the box frame 11 on the opposite side, and the connecting plate 6 and the connected bottom plate 3 form an L-shaped plate, which is omitted in the figure).

[0023] The invention is characterized in that: the inner oblique column 4 of the stairs of each ladder cage 1 is provided with a plurality of vertical tubes 8 at intervals from bottom to top, a radial threaded through hole is opened on the upper side wall of each vertical tube 8, a fastening screw 9 is screwed into each radial threaded through hole, and each vertical tube 8 is penetrated by a vertical rod 10, the inner end of the fastening screw 9 is against the corresponding vertical rod 10, the top ends of all the vertical rods 10 of the inner oblique column 4 of the same staircase are connected to an oblique rod 12 to form an adjustable handrail, and each box-type frame 11 has a long slot through hole 13 at the upper and lower four corners, and the upper and lower adjacent ladder cages are connected to each other. The long slot through holes 13 at the upper and lower four corners of the box-type frame 11 of 1 correspond to each other, and are respectively equipped with a T-shaped bolt 14, each T-shaped bolt 14 includes a T-shaped screw 141 and a nut 142, one end of each T-shaped screw 141 is provided with a straight head 143, and the other end is provided with an external thread, the straight head 143 can extend into the long slot through hole 13, the T-shaped screw 141 is penetrated in the long slot through holes 13 corresponding to each other, and the nut 142 and the straight head 143 thereon are respectively clamped on the corresponding box-type frame 11 of the upper and lower adjacent ladder cage 1, as shown in FIG. Figure 4 shown.

[0024] A fixed handrail 15 is fixedly connected to the box-type frame 11 above the outer inclined column 4 of the staircase of each cage 1 , and the fixed handrail 15 is confined within the box-type frame 11 .

Claims

1. A novel combined safety cage ladder, comprising a plurality of cages, which are stacked in sequence from bottom to top, each cage comprising a box frame, a top plate, a bottom plate and stairs, the stairs of each cage are located on the same side, the upper and lower ends of the stairs of each cage are connected to the top plate and the bottom plate respectively, each staircase comprises two parallel inclined columns, a plurality of horizontal pedals are evenly arranged between the two inclined columns from bottom to top, a connecting plate is connected to the top plate or the bottom plate of all cages, one end of the connecting plate is connected to the top plate or the bottom plate, and the other end is connected to the box frame on the opposite side, and the connecting plate and the connected top plate or the bottom plate form an L-shaped plate, characterized in that: The inner oblique column of the stairs of each ladder cage is provided with a plurality of vertical tubes at intervals from bottom to top, and each vertical tube has a radial threaded through hole on the upper side wall, and a fastening screw is screwed into each radial threaded through hole, and each vertical tube is penetrated by a vertical rod, and the inner end of the fastening screw is against the corresponding vertical rod, and the top ends of all the vertical rods of the inner oblique column of the same staircase are connected to an oblique rod to form an adjustable handrail, and each box-type frame has a long slot through hole at the upper and lower corners respectively, and the long slot through holes at the upper and lower corners of the box-type frames of the upper and lower adjacent ladder cages correspond one to one, and are respectively equipped with a T-shaped bolt, each T-shaped bolt comprises a T-shaped screw and a nut, and each T-shaped screw has a straight head at one end and an external thread at the other end, and the straight head can be inserted into the long slot through hole, and the T-shaped screw is penetrated in the one-to-one corresponding long slot through holes, and the nut and the straight head thereon are respectively stuck on the corresponding box-type frames of the upper and lower adjacent ladder cages.

2. The novel combined safety cage ladder according to claim 1 is characterized in that: A fixed handrail is fixedly connected to the box-type frame above the outer inclined column of the stairs of each ladder cage, and the fixed handrail is confined within the box-type frame.

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