Lattice type framework general ladder stand

Abstract

The invention provides a lattice type framework universal ladder stand which comprises a plurality of ladder stand assemblies installed in a lattice type tower, the ladder stand assemblies are installed in the lattice type tower in a staggered mode from high to low, and installation gaps are reserved at the opposite ends of every two adjacent ladder stand assemblies. A rest platform is mounted at the mounting gap; the rest platform comprises a framework horizontal cross rod which is connected to the lattice type tower and located at the end of the crawling ladder assembly, a platform frame is connected to the framework horizontal cross rod, a windproof fence is arranged on the side of the platform frame, and a steel grating is installed at the position, opposite to the crawling ladder assembly above the framework horizontal cross rod, of the framework horizontal cross rod. According to the universal crawling ladder, the multi-section type crawling ladder assembly and the lattice type tower are combined in a staggered mode, standardized production and rapid assembly are achieved, a space for installing a rest platform is formed through high-low staggered layout, and a rest area is provided for workers in the climbing process.

Description

Technical Field

[0001] This invention belongs to the technical field of auxiliary equipment for substations and converter stations, specifically to a universal ladder with a lattice structure. Background Technology

[0002] To enable power plants to transmit electricity to more distant locations, substations and converter stations are often built along the power transmission circuits. These substations and converter stations serve as relay points for transmission to users. The structural height of conventional substations and converter stations is between 10m and 50m. To facilitate later maintenance, ladders are often installed on the structure. Workers climb the ladders to reach the maintenance positions on the structure. For some lower structures, the climbing height is low, and workers do not need to rest. However, for structures with voltage levels of 750kV and above, workers need to climb heights exceeding 40m during maintenance. In existing structures, there is often only a vertical ladder without a platform for workers to rest. When workers need to rest, they can only cling to the ladder. Since this is high-altitude work, they are susceptible to the effects of strong winds during rest periods. Tools carried by them may fall due to the wind and cause injury to workers below, resulting in serious safety accidents. Summary of the Invention

[0003] To address the problem that in existing substations and converter stations, when workers need to climb to great heights, the ladders installed on the structure are inconvenient for resting and are susceptible to wind damage at heights, resulting in low safety during rest periods, this invention provides a universal ladder with a lattice structure.

[0004] To achieve the above objectives, the present invention provides the following technical solution: This invention proposes a universal ladder for a lattice frame, comprising multiple ladder components installed inside a lattice tower. The multiple ladder components are installed inside the lattice tower in a staggered manner from high to low, and an installation gap is reserved at the opposite ends of two adjacent ladder components. A resting platform is installed at the installation gap. The rest platform includes a horizontal crossbar connected to the lattice tower at the end of the climbing assembly. A platform frame is connected to the horizontal crossbar, and windproof barriers are provided on the sides of the platform frame. A steel grating is installed on the horizontal crossbar at a position opposite to the climbing assembly above it.

[0005] Preferably, the ladder assembly includes two vertically parallel ladder columns, and multiple anti-slip footrails are provided at equal intervals between the two ladder columns.

[0006] Preferably, a first protective component is connected to the two ladder columns; The first protective component includes a plurality of horizontally installed cage crossbars between the two ladder columns. The plurality of cage crossbars are equally spaced along the extension direction of the ladder columns, and cage uprights are vertically installed on the cage crossbars.

[0007] Preferably, the crossbar of the cage is an arc-shaped bar.

[0008] Preferably, a reinforcing bar is provided between the crossbar of the cage and the upright of the ladder.

[0009] Preferably, the reinforcing rod is provided with a second protective component; The second protective component includes a mounting post, which is vertically fixed to the reinforcing rod. The mounting post has a groove along its extension direction, which is used to limit the sliding of the buckle on the safety rope. Multiple limiting members are provided in the groove along its extension direction, which are used to restrict the buckle from sliding downward.

[0010] Preferably, the limiting member includes a limiting plate, an installation groove is provided on one inner wall of the slide, a limiting groove is provided on the other inner wall of the slide, the limiting plate is rotatably installed in the installation groove near one end, and a return spring is installed between the upper end face of the limiting plate and the top end face of the installation groove. The other end of the limiting plate extends into the limiting groove.

[0011] Preferably, the outer surface of the anti-slip step is provided with multiple protrusions, and the thickness of the windproof barrier is 4mm~6mm.

[0012] Preferably, a lifting assembly is provided at the center of the lattice tower; The hoisting assembly includes a pulley mounted on the lattice tower near its top, a hoisting rope wound on the pulley, a hook for hoisting objects connected to one end of the hoisting rope, and a drum connected to the other end of the hoisting rope. The drum is mounted at the bottom of the lattice tower and a drive motor is connected to the drum.

[0013] Preferably, the height of the platform frame is 1100mm~1300mm and the width is 800mm~900mm.

[0014] This invention also proposes a method for using a universal ladder for lattice structures, comprising the following steps: Multiple ladder components are staggered from high to low and installed in the lattice tower. Resting platforms are installed at the opposite ends of two adjacent ladder components. Workers connect safety ropes and climb up the ladder assembly at the bottom of the lattice tower. After climbing one section of the ladder assembly, the workers rest on the rest platform.

[0015] Compared with the prior art, the present invention has the following beneficial technical effects: This invention proposes a universal ladder with a lattice frame. This universal ladder combines multi-section segmented ladder components with staggered installation of a lattice tower to achieve standardized production and rapid assembly. The staggered layout also creates natural avoidance space, effectively dispersing the wind load surface and reducing structural displacement under strong winds. The installation gaps reserved between adjacent ladders are used to install rest platforms. The platform frame is welded to the frame crossbars through double ear plates to form a load-bearing structure, reducing crosswinds at high altitudes and providing rest platforms for workers during climbing.

[0016] Furthermore, this universal ladder is equipped with a second protective component. When a worker falls downwards due to other circumstances during the climb, the limiting plate will restrict the displacement distance of the buckles connected to the ropes installed in the slide groove, thereby preventing the worker from falling further and protecting the worker.

[0017] Furthermore, in this universal climbing ladder, a reinforcing rod is provided between the crossbar of the guard cage and the upright of the climbing ladder. The reinforcing rod strengthens the connection between the second connecting plate and the fourth connecting plate, thereby increasing the stability of the first protective structure assembly. Attached Figure Description

[0018] Figure 1 This is a structural schematic diagram of a universal ladder with a lattice frame proposed in this invention; Figure 2 This is a schematic diagram showing the connection between the ladder column and the rest platform in a universal ladder with a lattice structure proposed in this invention; Figure 3 This is a structural schematic diagram of a rest platform in a universal ladder with a lattice frame proposed in this invention; Figure 4 This is a schematic diagram of the connection of the first protective component in a universal ladder with a lattice structure proposed in this invention; Figure 5 This is a schematic diagram showing the connection between the platform frame and the windproof enclosure in a universal ladder with a lattice structure proposed in this invention; Figure 6 This is a schematic diagram of the structure of the second protective component in a universal ladder with a lattice frame proposed in this invention; In the attached diagram: 1. Lattice tower; 2. Ladder column; 20. Second connecting plate; 21. Third connecting plate; 3. Anti-slip step; 4. Cage upright; 5. Cage crossbar; 50. Fourth connecting plate; 6. Platform frame; 7. Steel grating; 8. Windproof enclosure; 9. Lifting assembly; 10. Frame horizontal crossbar; 11. Reinforcing bar; 12. Second protective assembly; 120. Mounting slot; 121. Limiting slot; 122. Slide groove; 123. Limiting plate; 124. Mounting square column; 125. Return spring; 13. First connecting plate. Detailed Implementation

[0019] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of the invention. Therefore, the drawings and description are considered to be exemplary in nature and not restrictive.

[0020] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0021] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0022] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0023] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0024] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0025] This invention proposes a universal ladder with a lattice frame, such as Figures 1-6 As shown, the system includes multiple ladder components installed within a lattice tower 1. These ladder components are vertically installed within the lattice tower 1, with staggered installations from high to low. A clearance is provided at the opposite ends of adjacent ladder components, and a resting platform is installed at these clearances. This universal ladder system features multiple ladder sections, meaning the ladders required on the lattice tower 1 are divided into multiple segments. This multi-segment layout facilitates installation, improves assembly efficiency, effectively avoids vertical structural interference, and the discontinuous layout disperses wind loads, reducing the overall wind-induced vibration of the ladder system.

[0026] The rest platform includes horizontal crossbars 10, which are horizontally fixed to the lattice tower 1. Of two adjacent ladder assemblies, one is located below the horizontal crossbar 10, with one end of the crossbar 10 connected to the top end of the ladder assembly below it. The other is located above the horizontal crossbar 10. Two horizontal crossbars 10 are horizontally and parallelly arranged, connected by a steel grating 7. The steel grating 7 corresponds to the ladder assembly connected above the horizontal crossbar 10. A platform frame 6 is connected above the horizontal crossbar 10. The platform frame 6 has a height of 1100mm~1300mm and a width of 800mm~900mm. Windproof barriers 8 are installed on the sides of the platform frame 6. The thickness is 4mm~6mm. A simple windproof platform is formed on the horizontal crossbar 10 of the frame by the windproof enclosure 8, which acts as a guardrail. A resting platform is constructed at the opposite ends between two adjacent climbing ladder components by the windproof enclosure 8, the platform frame 6 and the horizontal crossbar 10 of the frame. After climbing a section of the climbing ladder components, the staff can rest on the platform. During the rest, the windproof enclosure 8 blocks most of the wind force from affecting the resting staff on the platform. The platform can also provide a place for the staff to put their tool bags, reducing the burden on the staff when resting. In this embodiment, the platform frame 6 is constructed by steel pipes with a diameter of 38mm. The height of the construction is 1200mm, the width is 850mm and the length is 1650mm.

[0027] like Figure 1 and Figure 2 As shown, the ladder assembly includes two ladder columns 2 vertically and parallelly installed on a lattice tower 1. A first connecting plate 13 is provided on the side of the ladder column 2 on the lattice tower 1. A second connecting plate 20 is provided on the outer wall of the ladder column 2 at the position corresponding to the first connecting plate 13. The second connecting plate 20 and the first connecting plate 13 are connected by bolts to fix the ladder column 2 on the lattice tower 1. Multiple anti-slip steps 3 are provided at equal intervals between the two ladder columns 2. Multiple protrusions are provided on the outer surface of the anti-slip steps 3 to increase the anti-slip properties of the anti-slip steps 3.

[0028] like Figure 2 and Figure 4As shown, a first protective assembly is connected to two ladder columns 2. The first protective assembly includes multiple horizontal cage crossbars 5 installed between the two ladder columns 2. The cage crossbars 5 are arc-shaped bars with a radius of 375mm. A fourth connecting plate 50 is provided on the cage crossbar 5 at the arc opening of the arc plate. A third connecting plate 21 is provided on the outer wall of the ladder column 2. The third connecting plate 21 and the fourth connecting plate 50 are fixedly connected by bolts to fix the cage crossbars 5 to the ladder columns 2. The multiple cage crossbars 5 are equally spaced along the extension direction of the ladder columns 2. A cage upright 4 is vertically installed on the cage crossbars 5. The cage upright 4 is connected to the cage crossbars 5 by screws. The cage upright 4 vertically connects the multiple cage crossbars 5 to increase the stability of the first protective assembly.

[0029] like Figure 4 As shown, a reinforcing rod 11 is provided between the cage crossbar 5 and the ladder column 2 to strengthen the connection between the third connecting plate 21 and the fourth connecting plate 50.

[0030] like Figure 4 and Figure 5 As shown, a second protective component 12 is provided on the reinforcing rod 11. The second protective component 12 includes a mounting column 124, which is vertically fixed to the reinforcing rod 11. A sliding groove 122 is provided on the mounting column 124 along its extension direction. The sliding groove 122 is used to fasten the buckle on the safety rope. Multiple limiting members are provided in the sliding groove 122 along its extension direction to limit the downward sliding of the buckle. The limiting members include a limiting plate 123. An installation groove 120 is provided on one inner wall of the sliding groove 122, and a limiting groove 121 is provided on the other inner wall of the sliding groove 122. The limiting plate 123 is rotatably installed in the installation groove 120 near one end, and the upper end face of the limiting plate 123 is flush with the top of the installation groove 120. A return spring 125 is installed between the end faces; the other end of the limiting plate 123 extends into the limiting groove 121. As the safety rope moves upward with the worker, the buckle moves along the slide groove 122. When the buckle passes the limiting plate 123, it pushes the end of the limiting plate 123 located in the limiting groove 121 to rotate upward, opening the channel at this point of the limiting plate 123, so that the buckle slides upward along the slide groove 122. When the worker falls downward due to other factors, such as stepping into a hole or losing strength, the buckle of the safety rope slides along the slide groove 122 to the position of the limiting plate 123. The limiting plate 123 restricts the buckle from sliding downward, thereby working with the safety rope to pull the worker and prevent him from falling further, thus protecting the worker.

[0031] like Figure 1As shown, a hoisting assembly 9 is provided at the center of the lattice tower 1. The hoisting assembly 9 includes a pulley installed on the lattice tower 1 near its top, with a hoisting rope wound on the pulley. One end of the hoisting rope is connected to a hook for hoisting objects, and the other end of the hoisting rope is connected to a drum. The drum is installed at the bottom of the lattice tower 1, and a drive motor is connected to the drum. The drive motor drives the drum to rotate, pulling the hoisting rope. With the cooperation of the pulley, the tools and other objects hanging on the hook at the other end of the rope are lifted to a specified height, reducing the amount of work that workers have to carry when climbing the ladder and reducing the burden on the workers.

[0032] This invention also proposes a method for using a universal ladder for lattice structures, comprising the following steps: Multiple ladder components are staggered from high to low and installed in the lattice tower. Resting platforms are installed at the opposite ends of two adjacent ladder components. Workers connect safety ropes and climb up the ladder assembly at the bottom of the lattice tower. After climbing one section of the ladder assembly, the workers rest on the rest platform.

[0033] Specifically, two climbing columns 2 in the climbing ladder assembly are installed at intervals inside the lattice tower 1, anti-slip steps 3 are installed at equal intervals between the two climbing columns 2, and a protective cage crossbar 5 is set on the outside of the climbing column 2; a rest platform is set in two vertically adjacent climbing ladder assemblies; a reinforcing bar 11 is set between the protective cage crossbar 5 and the climbing column 2, and a second protective assembly 12 is set on the reinforcing bar 11; Workers climb from the bottom ladder assembly of the lattice tower. While climbing, one of the safety rope buckles is engaged with the groove 122 of the square column 124 on the second protective assembly 12. During the climb, the safety rope buckle slides along the groove 122. After climbing one section of the ladder assembly, workers can rest on the rest platform built on the horizontal crossbar 10, steel grating 7 and platform frame 6 of the structure.

[0034] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the scope of the invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0035] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can be appropriately combined to form other embodiments that can be understood by those skilled in the art. The above content is only for illustrating the technical concept of the present invention and should not be construed as limiting the scope of protection of the present invention. Any modifications made based on the technical concept proposed in this invention shall fall within the scope of protection of the claims of this invention.

Claims

1. A universal ladder with a lattice frame, characterized in that, The system includes multiple ladder components installed in a lattice tower (1). The multiple ladder components are installed in the lattice tower (1) in a staggered manner from high to low, and an installation gap is reserved at the opposite ends of two adjacent ladder components. A resting platform is installed at the installation gap. The rest platform includes a horizontal crossbar (10) of the frame connected to the lattice tower (1) at the end of the climbing assembly. A platform frame (6) is connected to the horizontal crossbar (10). A windproof enclosure (8) is provided on the side of the platform frame (6). A steel grating (7) is installed on the horizontal crossbar (10) at a position relative to the climbing assembly above it.

2. The universal ladder with a lattice frame according to claim 1, characterized in that, The ladder assembly includes two vertically parallel ladder columns (2), and multiple anti-slip steps (3) are provided at equal intervals between the two ladder columns (2).

3. A universal ladder with a lattice frame according to claim 2, characterized in that, A first protective component is connected to the two ladder columns (2); The first protective component includes a plurality of cage crossbars (5) horizontally installed between the two climbing columns (2), the plurality of cage crossbars (5) being equally spaced along the extension direction of the climbing columns (2), and cage uprights (4) being vertically installed on the cage crossbars (5).

4. A universal ladder with a lattice frame according to claim 3, characterized in that, The crossbar (5) of the cage is an arc-shaped bar.

5. A universal ladder with a lattice frame according to claim 4, characterized in that, A reinforcing bar (11) is provided between the crossbar (5) of the cage and the vertical column (2) of the ladder.

6. A universal ladder with a lattice frame according to claim 5, characterized in that, The reinforcing rod (11) is provided with a second protective component (12); The second protective component (12) includes a mounting post (124), which is vertically fixed to the reinforcing rod (11). A groove (122) is provided on the mounting post (124) along its extension direction. The groove (122) is used for the sliding limit of the buckle on the safety rope. Multiple limiting members are provided in the groove (122) along its extension direction. The limiting members are used to limit the buckle from sliding downward.

7. A universal ladder with a lattice frame according to claim 2, characterized in that, The limiting component includes a limiting plate (123), an installation groove (120) is provided on one side inner wall of the slide groove (122), a limiting groove (121) is provided on the other side inner wall of the slide groove (122), the limiting plate (123) is rotatably installed in the installation groove (120) near one end, and a return spring (125) is installed between the upper end face of the limiting plate (123) and the top end face of the installation groove (120). The other end of the limiting plate (123) extends into the limiting groove (121).

8. A universal ladder with a lattice frame according to claim 1, characterized in that, The anti-slip step (3) has multiple protrusions on its outer surface, and the windproof barrier (8) has a thickness of 4mm to 6mm.

9. A universal ladder with a lattice frame according to claim 1, characterized in that, A hoisting assembly (9) is provided at the center of the lattice tower (1); The hoisting assembly (9) includes a pulley mounted on the lattice tower (1) near its top, a hoisting rope wound on the pulley, a hook for hoisting objects connected to one end of the hoisting rope, and a drum connected to the other end of the hoisting rope. The drum is mounted at the bottom of the lattice tower (1) and a drive motor is connected to the drum.

10. A universal ladder with a lattice frame according to claim 1, characterized in that, The height of the platform frame (6) is 1100mm~1300mm and the width is 800mm~900mm.

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