A multifunctional combined foldable construction channel ladder
By designing a multi-functional combined foldable construction channel ladder, the problems of construction ladder dismantling, inconvenient transportation and waste of materials are solved, and the effects of strong applicability, cost saving and accelerated construction progress are achieved.
Patent Information
- Application Number
- CN202010249881.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2020-04-01
- Publication Date
- 2024-12-13
- Estimated Expiration
- 2040-04-01
AI Technical Summary
At the construction site, existing construction ladders are troublesome to dismantle, inconvenient transportation, easy to damage and rust in storage and storage, and frequent replacement of the shelf pipe length requirements for different construction sites, resulting in delays in construction costs and progress.
A multi-functional combined foldable construction channel ladder is designed, which is easy to disassemble and splice through folding structure and latch or bolt connection. The container body is fixed to the folding ladder, which is suitable for different height requirements of construction sites and reduces material waste and transportation damage.
It realizes the multiple use and wide applicability of construction ladders, reduces the cost of purchasing new materials, improves construction efficiency and progress, and avoids delays in construction periods.
Smart Images
Figure CN111322003B_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the field of construction engineering construction devices, in particular to a multifunctional combined foldable construction channel ladder. Background Art
[0002] In the current construction site, the construction ladder is divided into two types: construction ladder cage and construction channel ladder. The construction ladder cage is composed of multiple ladder cage units stacked together. The ladder cage unit has an upper platform frame and a lower platform frame that are offset along the x-axis and parallel to the xy plane. The two ends of the built-in channel of the ladder cage unit are respectively connected to the inner side of the upper platform frame and the inner side of the lower platform frame. In order to facilitate storage and transportation, this connection is a detachable connection. Each time a site is moved, the ladder cage channel must be disassembled and reinstalled after arriving at the new site. The lower end of the ladder cage channel is placed on the lower platform frame, and the upper end of the channel is against the inner side of the upper platform frame, and then fixed with bolts. Find the installation position during installation. The positioning of the ladder cage channel on the upper and lower platform frames along the x-axis direction is completely aligned by manual movement, which has high labor intensity and low efficiency, and is prone to safety accidents caused by stepping into the air between the ladder cage channel and the upper platform frame.
[0003] As another construction device, construction access ladders are basically all built with pipe racks, which not only requires a lot of manpower, material resources and time, but also wastes a lot of materials. In particular, different construction sites have different requirements for the length of the construction access racks, and it is often necessary to re-purchase the racks and fasteners. After multiple disassembly, there are very few fasteners that can be used. After the damage during transportation after disassembly and the corrosion during storage, some damage and waste will be caused. Therefore, the overall impact on construction costs and construction progress is very large. Therefore, there is a need for a construction access ladder that can be used repeatedly, has a wide range of applicability, is easy to transport, and is easy to store, so as to achieve the goal of improving the quality and efficiency of each project department. Summary of the invention
[0004] The technical problem to be solved by the present invention is that during the construction process at the construction site, the construction ladder is troublesome to disassemble when in use, inconvenient to transport, easy to be damaged and rusted during storage, and has poor versatility for construction sites with different requirements. In order to solve the above technical problems, the present invention provides a multifunctional combined foldable construction access ladder, including a container body and at least one group of foldable ladders; the foldable ladders include a first foldable ladder and a second foldable ladder, each of which includes two vertically set rectangular ladder frames, and vertical connecting rings are provided at the four corners of the rectangular ladder frames through connecting protrusions; the spacing between the inner surfaces of the rectangular ladder frames of the first foldable ladder is equal to the spacing between the outer surfaces of the rectangular ladder frames of the second foldable ladder; the first foldable ladder and the second foldable ladder each include a plurality of rotatable step ladders arranged between the rectangular ladder frames by a rotating shaft, and the rotating shaft is located on the lower surface of the rotatable step ladder; The left and right sides of the rotating shaft on the lower surface of the step ladder are also provided with limit shafts, and the limit shafts are rotatably connected to the rectangular ladder frame through a limit device arranged on the rectangular ladder frame; it also includes support rods connected to the two ends of the rotating shaft, wherein the support rods connected to the step ladders at the head and tail ends and the left and right ends of the rotating shaft at the center are longer and serve as guardrail rods, and the support rods and guardrail rods are perpendicular to the plane where the step ladder is located; connecting rods parallel to the upper surface of the rectangular ladder frame are hinged at the top of the support rods and the corresponding heights of the guardrail rods; a detachable guardrail cross bar connected by bolts is provided on the top of the guardrail rod; the container body includes a box-type frame composed of support rods; it also includes a liftable construction platform, the upper surface of the construction platform is provided with a fence, and the four corners of the lower surface are respectively connected to hydraulic rods; two positioning rings are also provided on the side of the construction platform, which are detachably connected to the connecting ring of the folding ladder by pins.
[0005] In particular, the limit device includes two arc-shaped limit rod slide grooves arranged on a rectangular ladder frame and concentric with the rotating shaft, the slide grooves are symmetrically arranged and the corresponding central angles are all 45°; a limit block and a first arc-shaped depression arranged on the slide groove wall are provided at the end of the slide groove, the limit block includes an arc-shaped slide slope close to one side of the limit rod and a second arc-shaped depression corresponding to the first arc-shaped depression; when the guardrail rod is vertical, the limit rod falls into the circular depression formed by the first arc-shaped depression and the second arc-shaped depression; the limit block is fixed in the slide groove by a spring on the opposite side of the second arc-shaped depression, and the top of the limit block is slidably connected to the slide groove through a sliding protrusion and a groove arranged at the end of the slide groove.
[0006] Particularly, the diameter of the portion of the limiting rod extending into the slide slot is smaller than the diameter of the portion between the rectangular ladder frames.
[0007] Particularly, the extended lines of the length and width of the rectangular ladder frame are circumscribed to the connecting ring near one side of the rectangular ladder frame in the horizontal and vertical directions respectively.
[0008] Particularly, four fixed connection rings corresponding to the positions of the bottom connection rings on the first folding ladder are provided on the bottom surface of the box-shaped frame, and are used to fix the first folding ladder placed in a horizontal state during transportation.
[0009] The beneficial effects of the present invention are as follows: a folding structure is adopted to decompose the access ladder into a plurality of foldable structural units, and the structural units are connected by latches or bolts for easy disassembly; during transportation, the plurality of folded structural units are connected up and down, and then connected as a whole to the container body to prevent collision damage during transportation; through the mutual splicing of the plurality of structural units, it can be applied to a plurality of construction sites with different requirements, has strong applicability, and can meet the requirements of a plurality of construction sites for access ladders in a single production, thus saving a large amount of cost, avoiding construction delays caused by purchasing a completely new pipe rack, speeding up the construction progress, and having a significant effect on improving the quality and efficiency of construction projects. BRIEF DESCRIPTION OF THE DRAWINGS
[0010] Figure 1 It is a three-dimensional diagram of the transport state of the device of the present invention.
[0011] Figure 2 This is a three-dimensional diagram of the device of the present invention in use.
[0012] Figure 3 Use a status stereogram for a folding ladder.
[0013] Figure 4 for Figure 3 Schematic diagram of the structure at point A in the middle.
[0014] Figure 5 for Figure 4 Schematic diagram of the cross-sectional structure along the BB plane.
[0015] Among them, the first folding ladder-a; the second folding ladder-b; the rectangular ladder frame-1; the connecting protrusion-11; the connecting ring-12a; the positioning ring-12b; the fixed connecting ring-12c; the rotating shaft-2; the supporting rod-21; the guardrail rod-22; the connecting rod-23; the guardrail crossbar-24; the limiting shaft slide groove-25; the limiting block-26; the first arc-shaped recess-27a; the second arc-shaped recess-27b; the sliding protrusion-28a; the sliding groove-28b; the step ladder-3; the limiting shaft-4; the box frame-5; the construction platform-6; the fence-61; the hydraulic rod-62. DETAILED DESCRIPTION
[0016] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.
[0017] A multifunctional combined foldable construction channel ladder, comprising a container body and a folding ladder; the folding ladder comprises a first folding ladder a and a second folding ladder b which are alternately arranged, each comprising two vertically erected rectangular ladder frames 1, and vertical connecting rings 12a are provided at the four corners of the rectangular ladder frames 1 through connecting protrusions 11; the spacing between the inner surfaces of the rectangular ladder frames 1 of the first folding ladder a is equal to the spacing between the outer surfaces of the rectangular ladder frames 1 of the second folding ladder b; the first folding ladder a and the second folding ladder b each comprise a plurality of rotatable step ladders 3 which are arranged between the rectangular ladder frames 1 through a rotating shaft 2, and the rotating shaft 2 is located on the lower surface of the rotatable step ladder 3; a limiting shaft 4 is further provided on the left and right sides of the rotating shaft 2 located on the lower surface of the rotatable step ladder 3, and the limiting shaft 4 is rotatably connected to the rectangular ladder frame 1 through a limiting device arranged on the rectangular ladder frame 1; and a connecting member is also provided. Support rods 21 are connected to both ends of the rotating shaft 2, wherein the support rods 21 connected to the step ladders 3 at the head and tail ends and the left and right ends of the rotating shaft of the step ladder 3 at the center are longer than the other support rods 21 to serve as guardrails 22, and the support rods 21 and guardrails 22 are perpendicular to the plane where the step ladder 3 is located; a connecting rod 23 parallel to the upper surface of the rectangular ladder frame 1 is hinged at the top of the support rod 21 and the corresponding height of the guardrail 22; a detachable guardrail cross bar 24 connected by bolts is provided on the top of the guardrail 22; the container body includes a box-type frame 5 composed of support rods; it also includes a liftable construction platform 6, the upper surface of the construction platform 6 is provided with a fence 61, and the four corners of the lower surface are respectively connected to the hydraulic rod 62; two sets of positioning rings 12b are also provided at the left and right ends of one side of the construction platform, which are detachably connected to the connecting ring 12a of the folding ladder through a latch.
[0018] The entire combined construction channel ladder is divided into three parts, namely, a container body part, a folding ladder part and a construction platform part. The container body includes a box-shaped frame 5 composed of support rods. On the one hand, it plays a role in fixing the folding ladder during transportation to prevent the folding ladder from being damaged due to collision during transportation and storage. On the other hand, it can also serve as a fixing point at the bottom of the folding ladder during use; the folding ladder includes a first folding ladder a and a second folding ladder b that are alternately arranged, each including two vertically set rectangular ladder frames 1, and vertical connecting rings 12a are provided at the four corners of the rectangular ladder frames 1 through connecting protrusions 11; the spacing between the inner surfaces of the rectangular ladder frames 1 of the first folding ladder a is equal to the spacing between the outer surfaces of the rectangular ladder frames 1 of the second folding ladder b; according to the height to be constructed, the number of the first folding ladder a and the second folding ladder b can be flexibly determined, and it is only necessary to ensure that the first folding ladder a and the second folding ladder b are alternately arranged The folding ladder a and the second folding ladder b can be installed in the order of folding ladder - construction platform - folding ladder to alternately rise; the first folding ladder a and the second folding ladder b each include a plurality of rotatable step ladders 3 arranged between the rectangular ladder frame 1 through a rotating shaft 2, and the rotating shaft 2 is located on the lower surface of the rotatable step ladder 3; a limiting shaft 4 is also provided on the left and right sides of the rotating shaft 2 located on the lower surface of the rotatable step ladder 3, and the limiting shaft 4 is rotatably connected to the rectangular ladder frame 1 through a limiting device arranged on the rectangular ladder frame 1; that is, a limiting shaft 4, a rotating shaft 2, and a limiting shaft 4 are sequentially provided at the bottom of the rotatable step ladder 3, and the three shafts are used as load-bearing shafts, the rotating shaft 2 is fixedly connected to the bottom of the step ladder 3, and the limiting shaft 4 is not fixed between the step ladder 3; the position of the limiting shaft 4 can be adjusted by the limiting device to achieve the purpose of adjusting the angle of the step ladder 3.
[0019] As a preferred embodiment, the limiting device includes two arc-shaped limiting shaft slide grooves 25 arranged on the rectangular ladder frame 1 and concentric with the rotating shaft 2, and the limiting shaft slide grooves 25 are symmetrically arranged with respect to the rotating shaft 2 and the corresponding central angles are all 45°; at the end of the limiting shaft slide groove 25, a limiting block 26 and a first arc-shaped recess 27a arranged on the slide groove wall are provided, and the limiting block 26 includes an arc-shaped slide slope 26a close to one side of the limiting shaft 4 and the first arc-shaped recess 27a. a corresponds to the second arc-shaped recess 27b; when the guardrail rod 22 is vertical, the limit shaft 4 falls into the circular recess formed by the first arc-shaped recess 27a and the second arc-shaped recess 27b; the limit block 26 is fixed to the limit shaft slide groove 25 by a spring on the opposite side of the second arc-shaped recess 27b, and the top of the limit block 26 is slidably connected to the limit shaft slide groove 25 by a sliding protrusion 28a and a sliding groove 28b arranged on the end groove wall of the limit shaft slide groove 25.
[0020] The working principle of the limit device is that when the channel ladder is in use, since the guardrail 22 is in a vertical state, the part of the limit shaft 4 extending into the limit shaft slide groove 25, driven by the rotating shaft 2, passes through the arc-shaped slide 26a, and falls into the circular depression formed by the first arc-shaped depression 27a and the second arc-shaped depression 27b, and is pressed against the first arc-shaped depression 27a under the action of the spring, so as to achieve the purpose of fixing the limit shaft 4 and prevent the step ladder 3 from turning over due to being stepped on by construction workers during use; when it needs to be disassembled and transported, the limit shaft 4 is pressed down to drive the limit block 26 down The limiting shaft 4 slides out of the circular depression, the guardrail bar 22 tilts, and the limiting shaft 4 slides to the other end of the limiting shaft slide groove 25, so as to achieve the purpose of folding and reducing the site occupation; at the same time, the first folding ladder a and the second folding ladder b are alternately stacked and placed, and the connecting rings 12a at the same position of the first folding ladder a and the second folding ladder b are connected by bolts, and the lower end connecting ring 12a of the first folding ladder a located at the lowest end is connected to the fixed connecting ring 12c on the bottom surface of the box-type frame 5, so as to fix the entire folding ladder unit inside the container body for easy transportation.
[0021] As a preferred embodiment, the diameter of the portion of the limit shaft 4 extending into the limit shaft slot 25 is smaller than the diameter of the portion between the rectangular ladder frames 1; that is, the limit shaft 4 is a rod that is wide in the middle and narrow at both ends, which prevents the limit shaft 4 from sliding between the rectangular ladder frames 1 during use and affecting the fixity of the device.
[0022] As a preferred embodiment, the extended lines of the length and width of the rectangular ladder frame 1 are circumscribed to the connecting ring 12a in the horizontal and vertical directions close to one side of the rectangular ladder frame 1, respectively; so that during use, the connection point of adjacent folding ladders is outside the folding ladder, which can better stabilize the entire folding ladder system.
[0023] As a preferred embodiment, four fixed connecting rings 12c corresponding to the positions of the bottom connecting rings 12a on the first folding ladder a are provided on the bottom surface of the box-shaped frame 5 for fixing the first folding ladder a placed in a horizontal state during transportation.
Claims
1. A multifunctional combined foldable construction access ladder, characterized in that: The container comprises a container body and a folding ladder; the folding ladder comprises a first folding ladder (a) and a second folding ladder (b) which are arranged alternately, each of which comprises two vertically erected rectangular ladder frames (1), and vertical connecting rings (12a) are arranged at four corners of the rectangular ladder frames (1) via connecting protrusions (11); the spacing between the inner surfaces of the rectangular ladder frames (1) of the first folding ladder (a) is equal to the spacing between the outer surfaces of the rectangular ladder frames (1) of the second folding ladder (b); the first folding ladder (a) and the second folding ladder (b) each comprise a plurality of rotatable step ladders (3) arranged between the rectangular ladder frames (1) via a rotating shaft (2), and the rotating shaft (2) is located on the lower surface of the rotatable step ladder (3); a limiting shaft (4) is further arranged on the left and right sides of the rotating shaft (2) located on the lower surface of the rotatable step ladder (3), and the limiting shaft (4) is rotatably connected to the rectangular ladder frames (1) via a limiting device arranged on the rectangular ladder frames (1); and the container further comprises a plurality of rotatable step ladders (3) connected to the two sides of the rotating shaft (2) The container body comprises a support rod (21) at the end, wherein the support rods (21) connected to the step ladders (3) at the front and rear ends and the left and right ends of the rotation axis of the step ladder (3) at the center are longer than the other support rods (21) to serve as guardrails (22), and the support rods (21) and the guardrails (22) are perpendicular to the plane where the step ladder (3) is located; a connecting rod (23) parallel to the upper surface of the rectangular ladder frame (1) is hinged at the top of the support rod (21) and at the corresponding height of the guardrail (22); a detachable guardrail cross bar (24) connected by bolts is provided at the top of the guardrail (22); the container body comprises a box-shaped frame (5) composed of support rods; and also comprises a liftable construction platform (6), the upper surface of the construction platform (6) is provided with a fence (61), and the four corners of the lower surface are respectively connected to hydraulic rods (62); two sets of positioning rings (12b) are also provided at the left and right ends of one side of the construction platform, and are detachably connected to the connecting ring (12a) of the folding ladder by a latch; The limiting device comprises two arc-shaped limiting shaft slide grooves (25) arranged on the rectangular ladder frame (1) and concentric with the rotating shaft (2), wherein the limiting shaft slide grooves (25) are symmetrically arranged with respect to the rotating shaft (2) and the corresponding central angles are both 45°; a limiting block (26) and a first arc-shaped depression (27a) arranged on the slide groove wall are arranged at the ends of the limiting shaft slide grooves (25), wherein the limiting block (26) comprises an arc-shaped sliding slope (26a) close to one side of the limiting shaft (4) and a second arc-shaped depression (27a) corresponding to the first arc-shaped depression (27a). The first arc-shaped depression (27b) is provided with a first arc-shaped depression (27a) and a second arc-shaped depression (27b). When the guardrail rod (22) is vertical, the limit shaft (4) falls into a circular depression formed by the first arc-shaped depression (27a) and the second arc-shaped depression (27b). The limit block (26) is fixed in the limit shaft slide groove (25) on the opposite side of the second arc-shaped depression (27b) by a spring, and the top of the limit block (26) is slidably connected to the limit shaft slide groove (25) by a sliding protrusion (28a) and a sliding groove (28b) provided on the end groove wall of the limit shaft slide groove (25).
2. A multifunctional combined foldable construction access ladder as claimed in claim 1, characterized in that: The diameter of the portion of the limiting shaft (4) extending into the limiting shaft sliding groove (25) is smaller than the diameter of the portion between the rectangular ladder frames (1).
3. A multifunctional combined foldable construction access ladder as claimed in claim 1, characterized in that: The extended lines of the length and width of the rectangular ladder frame (1) are circumscribed to the connecting ring (12a) in the horizontal and vertical directions respectively, close to one side of the rectangular ladder frame (1).
4. A multifunctional combined foldable construction access ladder as claimed in claim 1, characterized in that: Four fixed connection rings (12c) corresponding to the positions of the bottom connection rings (12a) of the first folding ladder (a) are provided on the bottom surface of the box-shaped frame (5) and are used to fix the first folding ladder (a) placed in a horizontal state during transportation.