Quickly dismountable tunnel reinforcing bar trolley stepped operation platform

Abstract

The utility model relates to tunnel construction technical field discloses a kind of ladder type operation platform of tunnel reinforcing bar trolley of quick dismounting, including square steel framework and the multiple patterned steel plates of laying in square steel framework upside surface, square steel framework inside fixedly connected with support plate and support inclined plate to enhance structural rigidity, left and right side is provided with quick connecting hole, upside is provided with framework connecting hole, patterned steel plate top and bottom edge are respectively equipped with the mutually buckling connection groove one and connection groove two of second, groove is equipped with steel plate connecting hole one, plate face is opened with the steel plate connecting hole two of corresponding framework connecting hole. The utility model realizes the high reliability of pedal connection by groove interlocking and double bolt fixation, and utilize installation handle and threaded connection to realize the quick dismounting of platform and trolley and the quick dismounting and maintenance of platform itself, significantly improve construction safety and efficiency.

Description

Technical Field

[0001] This utility model relates to the field of tunnel construction technology, and in particular to a stepped working platform for a tunnel rebar trolley that can be quickly assembled and disassembled. Background Technology

[0002] In modern tunnel construction, rebar trolleys are important auxiliary equipment for rebar tying and formwork installation. To ensure the work needs and safety of construction workers at different heights, rebar trolleys are equipped with working platforms, which are often in the form of steps.

[0003] However, existing stepped working platforms for tunnel rebar trolleys have some significant shortcomings in practical applications, especially in the connection and fixing of platform treads. Most designs use traditional bolts and simple clips for connection. When the platform is in the high humidity and high vibration environment inside the tunnel for a long time, this single and loose connection method will lead to a decrease in the reliability of the connection between the treads and the lower frame. Specifically, after a period of use, the bolts of the treads will loosen, and the edges of the treads will warp and shift relative to each other. This not only affects the overall rigidity and stability of the working platform, but more seriously, these loose and unstable treads will pose a great safety hazard to construction workers working at heights, increasing the risk of accidents. In addition, when the platform needs to be moved, its height adjusted, or repaired, these unstable treads without interlocking design also make on-site disassembly and reinstallation work inconvenient, affecting the progress of the project.

[0004] Therefore, this utility model proposes a stepped working platform for tunnel rebar trolley that can be quickly disassembled and assembled, in order to solve the problems of insufficient reliability of the pedal connection and inconvenience of disassembly and maintenance in the prior art. Utility Model Content

[0005] In view of the problems of insufficient reliability of the pedal connection, relative displacement and warping of the pedals, and inconvenience of disassembly and maintenance in the existing tunnel rebar trolley stepped working platform, this utility model aims to provide a tunnel rebar trolley stepped working platform with improved structure that can effectively solve the above problems and can be quickly disassembled and assembled.

[0006] This utility model provides a stepped working platform for a tunnel rebar trolley that can be quickly assembled and disassembled, comprising: a square steel frame, multiple patterned steel plates laid on the upper surface of the square steel frame, and fastening bolts.

[0007] The square steel frame is composed of multiple welded square steels and serves as the load-bearing base for the entire platform. Support plates are fixedly connected between the front and rear side walls of the square steel frame, and support inclined plates are fixedly connected between the left and right side walls. Quick connection holes are provided on both the left and right sides. The support plates and support inclined plates are set in the inner cavity of the square steel frame to enhance the overall structural rigidity. Multiple frame connection holes are provided on the upper surface of the square steel frame.

[0008] The patterned steel plate, used as a platform tread, has the following structural features that distinguish it from existing technologies: the top edge of the patterned steel plate has a connecting groove 1, the bottom edge has a connecting groove 2, the inner walls of both the connecting groove 1 and the connecting groove 2 have multiple steel plate connecting holes 1, and the upper surface of the patterned steel plate also has multiple steel plate connecting holes 2.

[0009] Furthermore, multiple patterned steel plates are connected sequentially along the stepped direction. The connecting groove 2 of the upper patterned steel plate engages with the connecting groove 1 of the lower patterned steel plate, forming a stepped interlocking structure. At the same time, the position of the connecting hole 2 of the steel plate corresponds to the position of the connecting hole of the frame. The fastening bolts pass through the connecting hole 2 of the steel plate and the connecting hole of the frame in sequence and are threaded to the square steel frame. The vertical locking force of the bolts detachably fixes the patterned steel plate to the square steel frame. This combination of groove interlocking and vertical bolt fixing achieves the platform's high stability and quick assembly / disassembly function.

[0010] Preferably, the support plates are distributed vertically, with the upper surface of the support plates welded and fixed to the inner top wall of the square steel frame, and the lower surface of the support plates welded and fixed to the inner bottom wall of the square steel frame. Multiple support plates are arranged at intervals along the length of the square steel frame, providing solid vertical support for the platform.

[0011] Preferably, the supporting inclined plates are distributed in an inclined state, with the upper end of the supporting inclined plate fixedly connected to the inner side wall of the square steel frame and the lower end fixedly connected to the opposite inner side wall. The supporting inclined plates and the supporting plates are arranged alternately to form a triangular support structure that prevents the square steel frame from undergoing lateral and torsional deformation.

[0012] Preferably, multiple patterned steel plates laid on the square steel frame are connected end to end along the step direction. The connecting groove 2 of the patterned steel plate located at the upper position is fitted into the outside of the connecting groove 1 of the patterned steel plate located at the lower position in a snap-fit ​​manner, effectively defining the vertical relative position of adjacent steps.

[0013] Preferably, when the second connecting groove is engaged with the first connecting groove, the first connecting hole of the steel plate located in the second connecting groove coincides with the first connecting hole of the steel plate located in the first connecting groove. The two adjacent patterned steel plates can be horizontally fixed and connected by external bolts passing through the coincident first connecting hole, which further enhances the connection rigidity between the plates and eliminates the relative displacement in the horizontal direction.

[0014] Preferably, a washer is provided between the fastening bolt and the upper surface of the patterned steel plate. The bolt thread passes through the washer, the head of the fastening bolt is pressed against the upper surface of the washer, and the lower surface of the washer is in close contact with the patterned steel plate. This is used to increase the contact area, disperse stress, and protect the surface of the patterned steel plate, while improving the reliability of the bolt connection.

[0015] Preferably, the left and right facades of the patterned steel plate are fixedly connected with installation handles, which are U-shaped, greatly facilitating the handling, alignment and disassembly of the patterned steel plate by construction personnel.

[0016] Preferably, the upper surface of the patterned steel plate is fixedly connected with multiple anti-slip protrusions, which are evenly distributed in a rectangular array in the stepping area to increase friction in wet or oily environments and ensure the safety of workers.

[0017] Preferably, the first connecting groove is a downwardly recessed L-shaped step structure, and the second connecting groove is an upwardly recessed L-shaped step structure. The depths of the two are matched to ensure that the surface of the work platform is flat and continuous after multiple patterned steel plates are connected.

[0018] This utility model has the following beneficial effects:

[0019] 1. This utility model solves the problems of loose connection between step treads, relative displacement and warping after being subjected to force, and poor overall stability in the prior art by setting mutually matching connecting grooves at the beginning and end of the patterned steel plate, and fixing them by using the interlocking of the grooves and the horizontal bolts in the internal steel plate connecting holes. It achieves the effect of adjacent treads forming a solid whole, uniform force distribution and flat and continuous working surface.

[0020] 2. This utility model constructs a stable triangular support structure by interlacing vertically distributed support plates and inclined support plates in the inner cavity of the square steel frame. This solves the problem that traditional hollow square steel frames will twist and deform and have insufficient load-bearing capacity after bearing heavy loads and long-term use, and achieves the effect of significantly improving the overall rigidity, compressive strength and service life of the platform base.

[0021] 3. This utility model solves the problems of heavy steel plates being difficult to manually move and position, having low installation and disassembly efficiency, and being unable to be quickly installed with a trolley in narrow and harsh construction sites such as tunnels by setting U-shaped installation handles on both sides of the patterned steel plate and using threaded connections between fastening bolts, frame connection holes, and quick connection holes. It achieves the effect of facilitating quick modular assembly and maintenance by construction personnel and truly realizing the rapid assembly and disassembly of the device. Attached Figure Description

[0022] Figure 1 This is a three-dimensional schematic diagram of a stepped working platform for a tunnel rebar trolley that can be quickly disassembled and assembled, as proposed in this utility model.

[0023] Figure 2 This is a schematic diagram of the supporting inclined plate of a stepped working platform for a tunnel rebar trolley that can be quickly disassembled and assembled according to this utility model.

[0024] Figure 3 A schematic diagram of the installation handle of a quick-assembly and disassembly tunnel rebar trolley stepped working platform proposed in this utility model.

[0025] Figure 4 for Figure 3 A magnified view of point A.

[0026] Legend:

[0027] 1. Square steel frame; 2. Support plate; 3. Supporting inclined plate; 4. Frame connection hole; 5. Patterned steel plate; 6. Connection groove one; 7. Connection groove two; 8. Steel plate connection hole one; 9. Steel plate connection hole two; 10. Mounting handle; 11. Gasket; 12. Fastening bolt; 13. Anti-slip protrusions; 14. Quick connection hole. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions in the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the protection scope of this utility model.

[0029] Example:

[0030] Please refer to Figures 1 to 4 This utility model provides a quick-assembly and disassembly tunnel rebar trolley stepped working platform, which aims to solve the structural defects in the prior art, such as insufficient reliability of the connection between the pedals and the frame and inconvenient disassembly and assembly. Figure 1 and Figure 2 As shown, a quick-assembly and disassembly tunnel rebar trolley stepped working platform includes a square steel frame 1 and multiple patterned steel plates 5 laid on the upper surface of the square steel frame 1. The square steel frame 1 serves as the installation base and core carrier of the entire device, while the patterned steel plates 5 are used to form the stepping area of ​​the working surface to realize the stepped working function.

[0031] The square steel frame 1 is composed of multiple welded square steel bars, forming a stepped structure that provides sufficient strength and rigidity. Support plates 2 are fixedly connected between the front and rear internal side walls of the square steel frame 1, and support inclined plates 3 are fixedly connected between the left and right internal side walls. Quick-connect holes 14 are provided on both the left and right sides of the square steel frame 1. Both the support plates 2 and the support inclined plates 3 are located within the inner cavity of the square steel frame 1. By constructing a triangular support structure similar to a truss, the overall load-bearing rigidity and torsional resistance of the square steel frame 1 are significantly enhanced. The support plates 2 are distributed vertically. The upper surface of the support plate 2 is welded and fixed to the inner top wall of the square steel frame 1, and the lower surface of the support plate 2 is welded and fixed to the inner bottom wall of the square steel frame 1. Multiple support plates 2 are arranged at intervals along the length of the square steel frame 1. The support inclined plates 3 are distributed in an inclined state. The upper end of the support inclined plate 3 is fixedly connected to the inner side wall of the square steel frame 1, and the lower end of the support inclined plate 3 is fixedly connected to the opposite inner side wall of the square steel frame 1. The support inclined plates 3 and the support plates 2 are staggered to form a sturdy support structure. Multiple frame connection holes 4 are evenly opened on the upper surface of the square steel frame 1.

[0032] The patterned steel plate 5 serves as a detachable work platform step. A connecting groove 6 is formed on the top edge of the plate, and a connecting groove 7 is formed on the bottom edge. Connecting groove 6 is a downward-recessed L-shaped step, and connecting groove 7 is an upward-recessed L-shaped step. The depths of connecting groove 6 and connecting groove 7 are matched to ensure a smooth surface after multiple patterned steel plates 5 are connected. Multiple steel plate connecting holes 8 are formed on the inner walls of both connecting groove 6 and connecting groove 7. Multiple steel plate connecting holes are also formed through the upper surface of the patterned steel plate 5. 29. The position of the steel plate connecting hole 29 corresponds to the position of the frame connecting hole 4. Multiple patterned steel plates 5 are connected end to end along the step direction. The connecting groove 27 of the patterned steel plate 5 located at the upper position is engaged with the outside of the connecting groove 16 of the patterned steel plate 5 located at the lower position, forming a stepped interlocking structure to realize the connection between the plates. The fastening bolts 12 pass through the steel plate connecting hole 29 and the frame connecting hole 4 in sequence and are threadedly connected to the square steel frame 1, thereby detachably fixing the patterned steel plate 5 to the square steel frame 1, realizing the rapid construction and disassembly of the platform structure.

[0033] Please refer to Figure 3 and Figure 4The upper surface of the patterned steel plate 5 is fixedly connected with multiple anti-slip protrusions 13. The multiple anti-slip protrusions 13 are evenly distributed in a rectangular array in the stepping area of ​​the patterned steel plate 5. They are used to increase surface friction in wet environments, effectively prevent construction workers from slipping, and improve work safety. The left and right sides of the patterned steel plate 5 are fixedly connected with mounting handles 10. The mounting handles 10 are welded to the side of the patterned steel plate 5 in a U-shaped structure. Their function is to provide workers with a firm and ergonomic hand grip point when handling, positioning and disassembling the patterned steel plate 5, which greatly facilitates the quick assembly and disassembly operations on site.

[0034] When the patterned steel plate 5 is vertically fixed to the square steel frame 1 by fastening bolts 12, a washer 11 is also provided between the fastening bolts 12 and the upper surface of the patterned steel plate 5. The threaded part of the fastening bolt 12 passes through the central hole of the washer 11, the head of the fastening bolt 12 is pressed against the upper surface of the washer 11, and the lower surface of the washer 11 is in close contact with the patterned steel plate 5. The function of the washer 11 is to increase the contact area between the head of the fastening bolt 12 and the patterned steel plate 5, thereby dispersing stress, protecting the plate surface of the patterned steel plate 5, preventing the fastening bolts 12 from directly damaging the patterned steel plate 5 under long-term vibration or heavy load, further improving the reliability and tightness of the connection, and reducing the risk of the fastening bolts 12 loosening.

[0035] When adjacent patterned steel plates 5 are connected, the connecting groove 2 7 of the upper patterned steel plate 5 and the connecting groove 1 6 of the lower patterned steel plate 5 are fastened together. The steel plate connecting hole 1 8 in the connecting groove 2 7 and the steel plate connecting hole 1 8 in the connecting groove 1 6 are aligned. The two adjacent patterned steel plates 5 are horizontally fixed and connected by external bolts passing through the aligned steel plate connecting holes 1 8. This connection method not only realizes the vertical detachable connection between the patterned steel plate 5 and the square steel frame 1 through the fastening bolts 12, but also realizes the interlocking and fixing between the plates through the fastening of the grooves and the horizontal connection of the external bolts. This makes the entire working platform bear the force as a whole, with higher overall stability and resistance to lateral displacement.

[0036] As a preferred embodiment, in order to enhance the internal support of the square steel frame 1, the support plates 2 are distributed in a vertical state. The upper surface of the support plates 2 is welded and fixed to the inner top wall of the square steel frame 1, and the lower surface of the support plates 2 is welded and fixed to the inner bottom wall of the square steel frame 1. Multiple support plates 2 are arranged at intervals along the length direction of the square steel frame 1, providing the main load-bearing support in the vertical direction.

[0037] As another preferred embodiment, in order to further ensure the structural stability of the frame, the supporting inclined plates 3 are distributed in an inclined state. The upper end of the supporting inclined plates 3 is fixedly connected to the inner side wall of the square steel frame 1, and the lower end of the supporting inclined plates 3 is fixedly connected to the opposite inner side wall of the square steel frame 1. The supporting inclined plates 3 and the supporting plates 2 are staggered to form a solid triangular support structure, which effectively disperses the shear force and torsion force on the square steel frame 1.

[0038] In another preferred embodiment, in order to achieve rapid installation and disassembly of the patterned steel plate 5, multiple patterned steel plates 5 laid on the square steel frame 1 are connected end to end along the step direction. The connecting groove 7 of the patterned steel plate 5 located at the upper position is fitted into the connecting groove 6 of the patterned steel plate 5 located at the lower position in a snap-fit ​​manner, forming a step-shaped interlocking structure. The interlocking structure limits the vertical positional relationship of the patterned steel plates 5.

[0039] As another preferred embodiment, in order to ensure the integrity of the adjacent patterned steel plates 5 after connection, when the second connecting groove 7 is engaged with the first connecting groove 6, the axis of the first steel plate connecting hole 8 located in the second connecting groove 7 coincides with the axis of the first steel plate connecting hole 8 located in the first connecting groove 6. The two adjacent patterned steel plates 5 are horizontally fixedly connected by external bolts passing through the coincident steel plate connecting holes 8. The horizontal connection eliminates the relative displacement between the plates, making the entire working platform more stable.

[0040] As another preferred embodiment, in order to avoid the head of the fastening bolt 12 directly damaging the surface of the patterned steel plate 5 and to improve the fastening effect, a washer 11 is also provided between the fastening bolt 12 and the upper surface of the patterned steel plate 5. The threaded part of the fastening bolt 12 passes through the central hole of the washer 11, the head of the fastening bolt 12 is pressed against the upper surface of the washer 11, and the lower surface of the washer 11 is in close contact with the patterned steel plate 5, thereby achieving uniform stress distribution.

[0041] As another preferred embodiment, in order to facilitate the handling and operation of construction personnel, the left and right facades of the patterned steel plate 5 are fixedly connected with mounting handles 10. The mounting handles 10 greatly improve the modular installation efficiency of the patterned steel plate 5.

[0042] In another preferred embodiment, to increase the anti-slip performance of the pedal, a plurality of anti-slip protrusions 13 are fixedly connected to the upper surface of the patterned steel plate 5, and the plurality of anti-slip protrusions 13 are evenly distributed in a rectangular array in the stepping area of ​​the patterned steel plate 5.

[0043] As another preferred embodiment, in order to ensure the flatness of the surface after the step treads are connected, the first connecting groove 6 is a downwardly recessed L-shaped step structure, and the second connecting groove 7 is an upwardly recessed L-shaped step structure. The depth of the first connecting groove 6 and the depth of the second connecting groove 7 are matched to ensure that a continuous and stable step working surface is formed after the patterned steel plates 5 are connected.

[0044] Working principle: When assembling the square steel frame 1, multiple square steels are first welded into shape. Multiple support plates 2 and support inclined plates 3 are welded inside the square steel frame 1. The support plates 2 provide vertical reinforcement support, and the support inclined plates 3 provide stable support for the triangular structure. Then, the quick connection holes 14 on both sides of the square steel frame 1 are used to connect the bolts through the connection holes and connect them with nuts on the inside of the square steel frame 1 before installing it on the trolley, thereby constructing an installation base with high load-bearing capacity and deformation resistance.

[0045] During the installation of the plates, the construction workers hold the installation handle 10 to move the patterned steel plate 5 to the top of the square steel frame 1 and lay them in sequence from bottom to top. When installing a single patterned steel plate 5, align the steel plate connection hole 2 9 on the surface of the patterned steel plate 5 with the frame connection hole 4 on the upper side of the square steel frame 1, and then pass the fastening bolt 12 through the washer 11 and screw it into the frame connection hole 4. The patterned steel plate 5 is vertically pressed and fixed to the square steel frame 1 by the threaded connection.

[0046] When connecting adjacent patterned steel plates 5, the connecting groove 2 7 at the bottom of the upper patterned steel plate 5 is aligned with the connecting groove 1 6 at the top of the lower patterned steel plate 5 and engaged, so that the two form a stepped interlocking structure. At this time, the axis of the steel plate connecting hole 1 8 inside the connecting groove 1 6 and the connecting groove 2 7 is coincident. External bolts are passed through the coincident steel plate connecting hole 1 8 and tightened, thereby realizing the horizontal fixed connection between adjacent patterned steel plates 5.

[0047] When construction workers walk or work on the work platform, the anti-slip protrusions 13 on the surface of the patterned steel plate 5 can effectively increase the friction of the contact surface and prevent people from slipping. The square steel frame 1 and the internal support plate 2 and support inclined plate 3 jointly bear and evenly distribute the working load from above. Since the fastening bolt 12 provides vertical locking force, and with the mechanical interlocking of the connecting groove 1 6 and the connecting groove 2 7, as well as the horizontal bolt fixing at the steel plate connecting hole 1 8, the patterned steel plate 5 is firmly fixed in the preset position, effectively resisting the vibration, shear force and lateral force generated during the movement, preventing the pedal from loosening, tilting or shifting, and ensuring the overall stability of the work platform. When maintenance or disassembly and transfer are required, the bolts only need to be loosened in the reverse direction, and the patterned steel plate 5 can be quickly removed by installing the handle 10, realizing the quick disassembly and assembly of the device.

Claims

1. A quick-assembly and disassembly tunnel rebar trolley stepped working platform, comprising a square steel frame (1) and a plurality of patterned steel plates (5) laid on the upper surface of the square steel frame (1); Its features are, The square steel frame (1) is composed of multiple welded square steels. Support plates (2) are fixedly connected between the front and rear side walls of the square steel frame (1). Supporting inclined plates (3) are fixedly connected between the left and right side walls of the square steel frame (1). Quick connection holes (14) are provided on both the left and right sides of the square steel frame (1). The support plates (2) and the supporting inclined plates (3) are both located within the inner cavity of the square steel frame (1) to enhance structural rigidity. Multiple frame connection holes (4) are uniformly provided on the upper surface of the square steel frame (1). A connecting groove (6) is provided on the top edge of the patterned steel plate (5). A connecting groove 2 (7) is provided on the bottom edge of the steel plate (5). Multiple steel plate connecting holes 1 (8) are provided on the inner wall of the connecting groove 1 (6) and the inner wall of the connecting groove 2 (7). Multiple steel plate connecting holes 2 (9) are also provided through the upper surface of the patterned steel plate (5). The position of the steel plate connecting holes 2 (9) corresponds to the position of the skeleton connecting holes (4). The fastening bolts (12) pass through the steel plate connecting holes 2 (9) and the skeleton connecting holes (4) in sequence and are threaded to the square steel skeleton (1), thereby detachably fixing the patterned steel plate (5) to the square steel skeleton (1).

2. The quick-assembly and disassembly tunnel rebar trolley stepped working platform according to claim 1, characterized in that, The support plates (2) are distributed vertically. The upper surface of the support plates (2) is welded and fixed to the inner top wall of the square steel frame (1), and the lower surface of the support plates (2) is welded and fixed to the inner bottom wall of the square steel frame (1). Multiple support plates (2) are arranged at intervals along the length direction of the square steel frame (1).

3. The quick-assembly and disassembly tunnel rebar trolley stepped working platform according to claim 1, characterized in that, The supporting inclined plate (3) is distributed in an inclined state. The upper end of the supporting inclined plate (3) is fixedly connected to the inner wall of the square steel frame (1), and the lower end of the supporting inclined plate (3) is fixedly connected to the opposite inner wall of the square steel frame (1). The supporting inclined plate (3) and the supporting plate (2) are arranged to form a triangular support structure.

4. The quick-assembly and disassembly tunnel rebar trolley stepped working platform according to claim 1, characterized in that, Multiple patterned steel plates (5) laid on the square steel frame (1) are connected end to end along the step direction, wherein the connecting groove 2 (7) of the patterned steel plate (5) located at the upper position is engaged with the outside of the connecting groove 1 (6) of the patterned steel plate (5) located at the lower position, forming a step-shaped interlocking structure.

5. A quick-assembly and disassembly tunnel rebar trolley stepped working platform according to claim 4, characterized in that, When the second connecting groove (7) is engaged with the first connecting groove (6), the first steel plate connecting hole (8) located in the second connecting groove (7) coincides with the axis of the first steel plate connecting hole (8) located in the first connecting groove (6), and the two adjacent patterned steel plates (5) are horizontally fixedly connected by external bolts passing through the coincident first steel plate connecting hole (8).

6. The quick-assembly and disassembly tunnel rebar trolley stepped working platform according to claim 1, characterized in that, A washer (11) is also provided between the fastening bolt (12) and the upper surface of the patterned steel plate (5). The screw part of the fastening bolt (12) passes through the center hole of the washer (11), the head of the fastening bolt (12) is pressed against the upper surface of the washer (11), and the lower surface of the washer (11) is in close contact with the patterned steel plate (5).

7. The quick-assembly and disassembly tunnel rebar trolley stepped working platform according to claim 1, characterized in that, The left and right sides of the patterned steel plate (5) are fixedly connected with mounting handles (10). The mounting handles (10) are U-shaped and are used to provide a hand gripping force point during disassembly and assembly.

8. A quick-assembly and disassembly tunnel rebar trolley stepped working platform according to claim 1, characterized in that, The upper surface of the patterned steel plate (5) is fixedly connected with multiple anti-slip protrusions (13), which are evenly distributed in a rectangular array in the stepping area of ​​the patterned steel plate (5) to increase surface friction.

9. A quick-assembly and disassembly tunnel rebar trolley stepped working platform according to claim 1, characterized in that, The first connecting groove (6) is a downwardly recessed L-shaped step structure, and the second connecting groove (7) is an upwardly recessed L-shaped step structure. The depth of the first connecting groove (6) and the depth of the second connecting groove (7) are matched to ensure that the surface of the multiple patterned steel plates (5) is flat after they are connected.

Images