Heavy construction steel jump plate equipped with self-locking anti-skid mechanism

Abstract

The present application relates to steel jump plate technical field, specifically to a kind of heavy construction steel jump plate equipped with self-locking anti-skid mechanism, including main body pedal, main hook and auxiliary hook;The main hook inside is equipped with driving mechanism, locking mechanism, and the driving mechanism rotating around vertical direction drives locking mechanism to lock or unlock main hook;The main hook and auxiliary hook of main body pedal both sides are about the center of main body pedal Center-symmetric arrangement;When lapping, the main hook and auxiliary hook on the adjacent main body pedal abut each other, and the outline of main hook and auxiliary hook is complementary;The surface of the auxiliary hook abutting main hook has the space containing locking mechanism.The cam transmission and spring return mechanism are hiddenly arranged in the hook, the operator operates from the top surface of jump plate, converts vertical rotation action into horizontal locking displacement, realizes the vertical independent extraction of single jump plate, and the overall bearing capacity and anti-fouling ability of platform are improved by end interlocking.

Description

Technical Field

[0001] This invention relates to the field of steel scaffolding technology, specifically to a heavy-duty construction steel scaffolding equipped with a self-locking anti-slip mechanism. Background Technology

[0002] In construction scenarios such as heavy building projects and dry dock construction, steel scaffolding planks equipped with self-locking mechanisms serve as core temporary support components in scaffolding space truss systems, primarily used to construct work passages for construction workers and static support platforms. In existing technologies, these building support panels typically utilize cold-formed thin-walled steel plates to provide structural rigidity, and achieve rigid fixation to the horizontal steel pipe crossbars of the scaffolding through end-integrated self-locking mechanisms. These scaffolding nodes employ spring pins or eccentric buckles to create a geometrically closed locking around the outer perimeter of the pipe bundle the moment the plank is erected onto the scaffolding grid, thereby constraining the plank's sliding freedom in both the horizontal and vertical directions and ensuring the overall stability of the scaffolding structure.

[0003] However, in actual construction, to improve the overall rigidity of the construction platform and meet the safety standards for scaffolding installation, construction sites typically require steel planks to be assembled in a closely spaced grid array on a flat surface, with adjacent plank edges almost seamlessly joined. Existing technologies often employ lateral sliding block interlocking scaffolding connectors, whose assembly and disassembly are highly dependent on ample external clearance. In the erection of scaffolding with standard spans, workers can still reach in through pre-reserved gaps on the side to unlock the planks; however, when such node structures are applied to modular scaffolding systems requiring close-packed assembly with zero gaps, their unlocking path, which relies on lateral horizontal displacement, interferes with the tight arrangement of the scaffolding.

[0004] In particular, when this scaffolding support component is used in circular or matrix-style scaffolding spaces that require "zero clearance" close-packing, such as deep compartments of ships or inside giant storage tanks, the lateral operating space is blocked, and there is a lack of top-level unlocking design, causing individual planks to be unable to be removed independently due to node jamming. Specifically, construction workers cannot reach and disconnect the connection node without lateral clearance, and are forced to adopt a reverse dismantling method, that is, they must start from the outermost edge of the scaffolding system and remove dozens of intact scaffolding panels on the same floor in sequence before they can replace the damaged individual component in the center. This forces local single-point maintenance of the scaffolding to evolve into systemic large-scale dismantling and modification, which seriously reduces the assembly and dismantling efficiency of the modular close-packed scaffolding system.

[0005] To address this, a heavy-duty construction steel scaffolding equipped with a self-locking anti-slip mechanism is proposed. Summary of the Invention

[0006] The purpose of this invention is to provide a heavy-duty construction steel scaffolding equipped with a self-locking anti-slip mechanism, which solves the problem that in densely packed scaffolding, the centrally damaged steel scaffolding cannot be independently disassembled due to limited lateral space. By hiding a cam transmission and spring reset mechanism inside the hook, the operator operates from the top surface of the scaffolding, converting the vertical rotation action into a horizontal locking displacement. This enables the vertical independent removal of a single scaffolding, and the end interlocking improves the overall load-bearing capacity and anti-fouling ability of the platform.

[0007] To achieve the above objectives, the present invention provides the following technical solution:

[0008] A heavy-duty construction steel scaffold plank equipped with a self-locking anti-slip mechanism is installed on a scaffold crossbar. It includes a main board, a main hook and a secondary hook at both ends of the main board. The main hook has a drive mechanism and a locking mechanism that is pulsatorically connected to the drive mechanism. The drive mechanism receives an orthogonal driving force in the vertical direction and rotates around the vertical direction. The locking mechanism is driven by the drive mechanism to move horizontally to lock or unlock the main hook at the lower end of the scaffold crossbar.

[0009] Based on the transmission connection between the drive mechanism and the locking mechanism, when the operator applies a vertical driving force downward from the top of the pedal, the built-in drive mechanism can convert this force into a horizontal unlocking displacement of the locking mechanism, thereby changing the limitation of the traditional solution that relies on lateral operating space. In a construction array with multiple steel scaffolding panels seamlessly spliced ​​together, if a damaged component in the central area needs to be replaced, maintenance personnel do not need to remove the intact scaffolding panels one by one from the outside. They can directly complete the unlocking action through the top window, thereby achieving the independent vertical removal of a single steel scaffolding panel. This structure protects the internal transmission components from the intrusion of external mud and debris while improving the maintenance efficiency and operational safety of the construction platform.

[0010] The main hooks and auxiliary hooks on both sides of the main body pedal are arranged symmetrically about the center of the main body pedal. The positions of the main hooks and auxiliary hooks on the main body pedal are uniform, and the main body pedal is in the same position when it is attached to the scaffold crossbar. When it is attached, the main hooks and auxiliary hooks on adjacent main body pedals abut against each other, and the outlines of the main hooks and auxiliary hooks are complementary and fit together when they are attached. The surface of the auxiliary hook that abuts against the main hook has space to accommodate the locking mechanism. When it is attached, the main hooks and auxiliary hooks are connected by the locking mechanism.

[0011] The complementary design allows for seamless splicing of adjacent steel planks, enhancing stability after overlapping; the centrally symmetrical design allows for overlapping of steel planks with the same specifications; this reduces the cost of mold making and warehousing of parts, and eliminates the need to distinguish the beginning and end directions during on-site close-packed blind assembly construction, improving the flexibility of on-site material scheduling and the efficiency of the entire assembly process.

[0012] Preferably, the main hook has a guide slide cavity and an installation cavity that are interconnected inside. The guide slide cavity extends along the horizontal axis, and the installation cavity extends along the vertical direction. The top surface of the main hook has a countersunk operation window that communicates with the installation cavity. The drive mechanism is installed inside the installation cavity, and the locking mechanism is installed inside the guide slide cavity.

[0013] The aforementioned design incorporates a horizontal first guide cavity and a vertical second mounting cavity that are interconnected within the end hook. Both the drive mechanism and the locking mechanism are housed within these cavities. This conceals the locking connection components, preventing lateral physical interference when adjacent steel planks are joined. Furthermore, the top surface of the main hook features a through-hole operating window through which the top of the drive mechanism is exposed to receive operating commands.

[0014] Preferably, the drive mechanism includes a rotating shaft and a cam. The rotating shaft is installed inside the mounting cavity, and the cam is eccentrically fixed below the rotating shaft. The cam is also connected to the locking mechanism to precisely convert the vertical rotational motion into horizontal linear displacement, thereby achieving the locking and unlocking of the locking mechanism. Furthermore, the eccentric installation of the cam amplifies the torque, providing an initial unlocking force sufficient to break through the sticky, dried sludge. In addition, compared to gear and rack, worm gear, and similar transmissions, cam transmissions have lower precision requirements and are more suitable for the muddy environment where the steel scaffolding is located.

[0015] Preferably, the guide cavity is provided with a reset elastic member, one end of which abuts against the inner wall of the guide cavity, and the other end of which is connected to the locking mechanism; so as to maintain the initial position of the locking mechanism, and the locking mechanism automatically resets under the action of the reset elastic member during the cam return stroke.

[0016] Preferably, the bottom of the guide slide cavity is provided with an outwardly downward inclined drainage hole, which penetrates the guide slide cavity to actively discharge drilling mud or condensate that has entered the cavity by gravity flow principle, preventing debris from solidifying and jamming the internal moving parts; and eliminating the air damping effect generated at the blind end of the cavity when the locking mechanism moves rapidly, thereby improving the action response speed.

[0017] Preferably, the cam has a self-locking tangent at its maximum rotation radius. When the cam rotates to its maximum stroke, the self-locking tangent forms a surface contact limit with the locking mechanism. When the cam rotates to the extreme point of the push stroke in a certain direction, it prevents the cam from continuing to rotate in that direction, that is, it maintains the extreme point of the push stroke state so that the locking mechanism remains locked.

[0018] Preferably, the top of the rotating shaft is provided with an enlarged disc flange, and a sealing groove is provided on the side circumferential surface of the disc flange. The sealing groove forms a clearance fit with the inner wall of the countersunk operating window to cut off the penetration path of salt spray and small mortar particles and protect the cam surface. In addition, the sealing groove also has an oil storage function, which can provide long-term effective self-lubrication for the rotating shaft and reduce the maintenance frequency.

[0019] Preferably, a drive hole is provided at the center of the top surface of the disc flange, and the drive hole is configured with an irregular shape; with the help of special tools, tamper-proof management is achieved to prevent unauthorized personnel from arbitrarily unlocking the key locking points in the dense array.

[0020] Preferably, the surface of the secondary hook that abuts against the main hook has a stabilizing groove. When adjacent steel planks are locked, the locking mechanism inserts into the stabilizing groove along the guide cavity. The locking mechanisms on adjacent steel planks insert into each other's stabilizing grooves, so that the overlapping steel planks are connected to each other. The rigid insertion of the locking mechanism and the stabilizing groove, together with the overlapping of the main hook, creates a connecting band between adjacent planks, effectively dispersing the concentrated load of a single plank. This makes the entire densely packed plank array approach a continuous, rigid load-bearing platform in terms of stress characteristics, thereby enhancing the stability of the overall structure.

[0021] Preferably, the guide cavity extends downwards from the main pedal; this increases the volume of the guide cavity, thereby increasing the stroke of the cam and thus increasing the depth of the locking mechanism's insertion into the stabilizing groove, thereby improving the stability of the overlap; it also increases the bearing area of ​​the main hook on the main pedal, thereby improving the load-bearing capacity of the steel scaffold.

[0022] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0023] 1. This invention conceals the locking and driving mechanisms internally by creating a horizontal guide cavity and a vertical mounting cavity inside the main hook. Simultaneously, a countersunk operating window is created on the top surface of the main hook, exposing the top of the driving mechanism. When multiple steel planks are tightly spliced ​​together, the operator can directly apply force downwards through the countersunk operating window on the top surface of the main hook. The driving mechanism then converts the vertical force into a horizontal unlocking displacement of the locking mechanism. This changes the existing unlocking method that relies on side operating space, allowing a single damaged plank in the central area of ​​the splicing array to be vertically removed directly through top-side operation. This avoids the need to remove intact planks one by one from the outside, improving the maintenance and replacement efficiency of the scaffolding platform.

[0024] 2. The drive mechanism of this invention adopts an eccentric cam design, which has lower precision requirements compared to gear transmissions. It can adapt to the muddy environment where the steel scaffold is located, and amplifies the torque through eccentric installation, providing the initial unlocking force to break through the sticky mud and sand. At the same time, the side of the disc flange at the top of the rotating shaft is provided with a sealing groove, which forms a clearance fit with the inner wall of the countersunk hole operating window to prevent external particles from entering. The bottom of the guide slide cavity is also provided with an outwardly downward inclined discharge hole. During the operation of the mechanism, drilling mud or condensate that has entered the cavity can flow out naturally through the discharge inclined hole under the action of gravity, preventing debris from solidifying inside and jamming the moving parts, and ensuring the smooth execution of locking and unlocking actions.

[0025] 3. This invention features a self-locking tangent at the maximum radius of rotation of the cam. When the cam reaches its maximum stroke, the self-locking tangent forms a surface contact with the locking mechanism, preventing the cam from continuing to rotate and maintaining a stable locking state. Furthermore, the main hook and the auxiliary hook adopt a complementary structure and are arranged symmetrically about the center. When adjacent steel planks are spliced ​​and locked, the locking mechanism extends horizontally along the guide cavity and inserts into the stabilizing groove opened on the auxiliary hook of the adjacent steel plank. Through the interlocking of the hooks, the adjacent steel planks are connected to each other, dispersing the concentrated load on a single plank and thus improving the load-bearing capacity and stability of the overall scaffolding structure. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the overall isometric structure of the present invention;

[0027] Figure 2 For the present invention Figure 1 Enlarged diagram of part A in the middle;

[0028] Figure 3 For the present invention Figure 2 Schematic diagram of the structure of each chamber;

[0029] Figure 4 For the present invention Figure 2 A schematic diagram of the internal cross-section;

[0030] Figure 5 This is a schematic diagram of the drive mechanism structure of the present invention;

[0031] Figure 6 This is a schematic diagram of the combined overlapping structure of the present invention;

[0032] Figure 7 For the present invention Figure 6 Enlarged diagram of section B;

[0033] Figure 8 This is a schematic diagram of the unlocking state of the present invention.

[0034] In the diagram: 1. Main pedal; 2. Main hook; 3. Secondary hook; 31. Stabilizing groove; 4. Scaffold crossbar; 5. Guide slide cavity; 51. Locking mechanism; 52. Reset elastic component; 53. Drainage inclined hole; 6. Mounting cavity; 7. Drive mechanism; 71. Rotating shaft; 711. Disc flange; 712. Sealing groove; 713. Drive hole; 72. Cam; 721. Self-locking facet; 8. Countersunk operating window. Detailed Implementation

[0035] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0036] Please see Figures 1 to 8 This invention provides a heavy-duty construction steel scaffolding equipped with a self-locking anti-slip mechanism, the technical solution of which is as follows:

[0037] A heavy-duty construction steel scaffold plank equipped with a self-locking anti-slip mechanism is installed on a scaffold crossbar 4. It includes a main board 1, main hooks 2 and auxiliary hooks 3 located at both ends of the main board 1, which overlap on the scaffold crossbar 4. The main hook 2 has interconnected guide cavities 5 and mounting cavities 6. The guide cavities 5 extend horizontally, and the mounting cavities 6 extend vertically. The top surface of the main hook 2 has a countersunk operating window 8, which communicates with the mounting cavities 6. The inner wall of the countersunk operating window 8 has an annular stepped bearing surface. The top of the drive mechanism 7 transmits the received axial impact force to the main hook 2 through the annular stepped bearing surface, thus protecting the internal drive shaft from axial bending deformation due to heavy impacts from falling objects and optimizing the force path. The vertical clamping force during operation is evenly distributed to the main hook 2, enhancing connection stability. A drive mechanism 7 is provided in the mounting cavity 6. The top of the drive mechanism 7 is exposed through the countersunk operating window 8, and the bottom of the drive mechanism 7 extends into the guide slide cavity 5. A locking mechanism 51 is slidably provided in the guide slide cavity 5. The upper surface of the locking mechanism 51 is provided with a guide rib, and the inner top surface of the guide slide cavity 5 is provided with a limiting groove that matches the guide rib, so as to strictly constrain the horizontal displacement trajectory of the locking mechanism 51 and prevent it from circumferentially flipping or unevenly wearing during sliding. The locking mechanism 51 is connected to the bottom of the drive mechanism 7. The extended end of the locking mechanism 51 has a chamfered structure with an arc-shaped guide surface. The drive mechanism 7 receives the orthogonal driving force along the vertical direction and converts it into the displacement of the locking mechanism 51 along the horizontal axis.

[0038] The main hook 2 and the auxiliary hook 3 are preferably made of high-strength low-alloy structural steel (such as Q345B or higher grade) through precision casting or hot forging, and the surface is hot-dip galvanized to resist corrosion in harsh construction environments. It should be further explained that "receiving orthogonal driving force along the vertical direction" in the specific transmission means: the rotational torque input after the operating tool is inserted vertically into the top of the drive mechanism 7; while the aforementioned "annular step bearing surface" is specifically responsible for bearing the vertical downward pressure generated when the operating tool is inserted or the vertical impact load of an unexpected external object, thereby isolating the driving torque from the destructive axial impact force and ensuring the precision of the internal moving parts.

[0039] As one embodiment of the present invention, refer to Figures 1-4 The drive mechanism 7 includes a rotating shaft 71 and a cam 72. The rotating shaft 71 is installed inside the mounting cavity 6, and the cam 72 is eccentrically fixed below the rotating shaft 71 and is connected to the locking mechanism 51 in a transmission manner. The outer contour of the cam 72 adopts an eccentric arc, and the size of its eccentricity determines the maximum horizontal displacement stroke of the locking mechanism 51. The thrust surface of the cam 72 and the force-bearing tail end of the locking mechanism 51 preferably adopt a line contact fit. In order to cope with the abnormal wear caused by mud and sand that may be mixed in at the construction site, the outer edge surface of the cam 72 and the force-bearing tail end of the locking mechanism 51 are both subjected to high-frequency quenching treatment to make their surface hardness reach HRC45-50 or higher, so as to maintain the stability of the transmission dimensions in the long-term muddy environment and high-frequency locking action.

[0040] As one embodiment of the present invention, refer to Figure 4 , Figure 7 and Figure 8 The guide cavity 5 is equipped with a reset elastic member 52. One end of the reset elastic member 52 abuts against the inner wall of the guide cavity 5, and the other end of the reset elastic member 52 is connected to the locking mechanism 51. The reset elastic member 52 is preferably a tension spring. When the cam 72 makes a pushing motion (i.e., the main hook 2 is locked on the scaffold crossbar 4), the tension spring is continuously stretched within its elastic deformation range, such as... Figure 7 As shown; when cam 72 performs its return motion (i.e., the main hook 2 unlocks on the scaffold crossbar 4), the tension spring returns to its natural length and pulls the locking mechanism 51 during the reset process to unlock the main hook 2, as shown. Figure 8 As shown, the tension spring is made of corrosion-resistant spring steel wire (such as stainless steel 304 or spring steel with Dacromet coating). Mounting pins are pre-embedded or integrally formed on the inner wall of the blind end of the guide slide cavity 5 and the side wall of the locking mechanism 51, respectively, and the hooks at both ends of the tension spring are anchored to the pins on both sides.

[0041] As one embodiment of the present invention, refer to Figure 4The bottom of the guide slide cavity 5 is provided with an outwardly downward inclined discharge hole 53, which extends through the guide slide cavity 5. The downward inclination angle of the discharge hole 53 is between 10° and 20° to meet the gravity self-cleaning flow velocity requirements in fluid mechanics. When high-viscosity drilling mud or rainwater seeps into the guide slide cavity 5 from the countersunk hole operating window 8 or the gap at the front end of the locking mechanism 51, it will smoothly slide down and be discharged along this optimal inclination angle. At the same time, when the locking mechanism 51 makes a rapid piston-like reciprocating motion in the cavity, the inclined hole also serves as an air pressure balance channel, eliminating the air spring damping effect at the bottom of the cavity.

[0042] As one embodiment of the present invention, refer to Figure 5 The cam 72 has a self-locking surface 721 at its maximum rotation radius. When the cam 72 rotates to its maximum stroke, the self-locking surface 721 forms a surface contact limit with the locking mechanism 51. The self-locking surface 721 is a straight transition section parallel to the pressure surface at the tail end of the locking mechanism 51. When the tool drives the cam 72 to rotate past the maximum stroke extreme point and the self-locking surface 721 is fully engaged with the tail end of the locking mechanism 51, the horizontal reverse thrust from the outside (such as the adjacent steel scaffold hook 3) will act vertically on the surface. The direction of this force passes exactly through the rotation center of the shaft 71, and its lever arm is zero. Therefore, no matter how large the external horizontal reverse thrust is, it cannot cause the cam 72 to continue rotating, thus achieving dead-point self-locking and preventing accidental loosening during use.

[0043] As one embodiment of the present invention, refer to Figure 5 The top of the rotating shaft 71 is provided with an enlarged disc flange 711. A sealing groove 712 is opened on the side circumferential surface of the disc flange 711. The sealing groove 712 forms a clearance fit with the inner wall of the countersunk operating window 8. A drive hole 713 is opened at the center of the top surface of the disc flange 711. The drive hole 713 is set with an irregular structure. In this method, the drive hole 713 is set with a regular hexagonal structure. In actual production, the drive hole 713 can be customized to achieve one-to-one disassembly and assembly with the corresponding tools. An O-ring made of weather-resistant rubber (such as nitrile rubber or fluororubber) is embedded in the sealing groove 712. This O-ring not only builds the first waterproof and dustproof barrier between the dynamic and static mating surfaces, but the sealed cavity it forms is also pre-filled with extreme pressure lithium-based grease to provide self-lubrication throughout the entire life cycle.

[0044] As one embodiment of the present invention, refer to Figure 6 and Figure 7The main hook 2 and the auxiliary hook 3 are designed as a complementary structure. The main hook 2 and the auxiliary hook 3 on both sides of the main board 1 are arranged symmetrically about the center of the main board 1, and the main hook 2 is located at the corner of the main board 1 to enhance the overall stability after overlapping. The auxiliary hook 3 has a stabilizing groove 31 on its surface that abuts against the main hook 2. When adjacent steel planks are locked, the locking mechanism 51 is inserted into the stabilizing groove 31 along the guide cavity 5. The guide cavity 5 extends downwards from the main board 1. The outer contours of the main hook 2 and the auxiliary hook 3 at the joint adopt a stepped interlocking or tongue-and-groove type convex-concave fit. When adjacent steel planks are closely assembled, the lateral joints of the two are... The gap is controlled within 1 mm, forming a seamless transition in terms of both appearance and structure. The inner cavity size of the stabilizing groove 31 is slightly larger than the cross-sectional size of the protruding end of the locking mechanism 51 (using clearance fit H7 / g6 level), which ensures smooth insertion under harsh working conditions and maintains consistent rigidity after locking. The design of the guide slide cavity 5 extending downwards to the main pedal 1 increases the bending section modulus of the main hook 2 in the Z-axis (vertical) direction. This not only accommodates the longer stroke cam 72 mechanism to ensure that the locking end penetrates deep into the interior of the stabilizing groove 31, but also effectively resists the risk of node tearing caused by concentrated dynamic loads during heavy construction.

[0045] Working principle: To achieve the overlapping and independent removal of steel planks in a closely spaced scaffolding array, a concealed self-locking system combining top drive and internal transmission is employed. (Refer to...) Figure 1 , Figure 6 and Figure 8 During the initial erection phase, construction workers attach the main hooks 2 and auxiliary hooks 3 at both ends of the main platform 1 to the scaffold crossbars 4. Because the main hooks 2 and auxiliary hooks 3 are centrally symmetrical and complementary, adjacent steel planks can be fitted together. At this time, the locking mechanism 51, under the tension of the reset elastic member 52, retracts and hides inside the guide cavity 5, avoiding lateral interference during assembly.

[0046] To connect the assembled individual steel planks to form a unified load-bearing platform, the specific method is to achieve lateral insertion of adjacent planks through top-level operation. (Refer to...) Figure 2 , Figure 4 , Figure 5 and Figure 7During the locking action, the operator inserts the countersunk operating window 8 on the top surface of the tool's self-hook 2 downwards, engaging with the drive hole 713 at the top of the rotating shaft 71. When the rotating shaft 71 is rotated, the cam 72, eccentrically fixed below, rotates accordingly. Its outer edge overcomes the tension of the reset elastic member 52, pushing the locking mechanism 51 horizontally outwards along the guide slide cavity 5 and inserting it into the stabilizing groove 31 on the adjacent steel scaffold sub-hook 3. During this extension process, the reset elastic member 52 is stretched and deformed. When the cam 72 rotates to its maximum stroke, its self-locking tangent 721 at its maximum radius of rotation forms a surface contact limit with the locking mechanism 51, achieving structural self-locking and preventing unlocking during subsequent use.

[0047] To ensure the normal operation of internal transmission components in the construction environment, the specific method is to incorporate physical protection and drainage channels into the structure. (Refer to...) Figure 4 and Figure 5 The disc flange 711 at the top of the rotating shaft 71 has a sealing groove 712 on its side circumference, which forms a clearance fit with the inner wall of the countersunk operating window 8 to prevent mud and water from seeping in from the top. At the same time, the bottom of the guide slide cavity 5 has an outwardly downward inclined drain hole 53, which can use gravity to allow mud or water entering the cavity to flow out, preventing debris from accumulating and jamming the internal moving parts, and reducing air resistance when the locking mechanism 51 moves.

[0048] To allow the damaged steel plank in the center of the array to be vertically removed for replacement, a spring-loaded release mechanism is used. (See reference...) Figure 4 and Figure 8 When the scaffold needs to be disassembled, the operator inserts a tool through the countersunk operating window 8 on the top surface and rotates the shaft 71 in the opposite direction, causing the thrust surface and self-locking cut surface 721 of the cam 72 to rotate out of the limit state. At this time, the return elastic member 52, which is in a stretched state, springs back and retracts, pulling the locking mechanism 51 horizontally back from the adjacent stabilizing groove 31 into the guide slide cavity 5. After the unlocking is completed, the scaffold is released from the lateral connection, and the operator can then pull it vertically upward, simplifying the disassembly and replacement steps of the intermediate scaffold.

[0049] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A heavy-duty construction steel scaffold plank equipped with a self-locking anti-slip mechanism, installed on a scaffold crossbar, comprising a main board, a main hook and a secondary hook disposed at both ends of the main board, characterized in that: The main hook is equipped with a drive mechanism and a locking mechanism that is connected to the drive mechanism. The drive mechanism receives an orthogonal driving force in the vertical direction and rotates around the vertical direction. The locking mechanism is driven by the drive mechanism to move horizontally so as to lock or unlock the main hook at the lower end of the scaffold crossbar. The main hooks and auxiliary hooks on both sides of the main board are arranged symmetrically about the center of the main board. The positions of the main hooks and auxiliary hooks on the main board are uniform, and the main board is connected to the scaffold crossbar in the same position. When the main hooks and auxiliary hooks on adjacent main pedals are overlapped, the main hooks and auxiliary hooks have complementary outlines and fit together when overlapped; The surface of the secondary hook that abuts against the main hook has space to accommodate the locking mechanism, and the main hook and the secondary hook are connected by the locking mechanism when they overlap. The main hook has an interconnected guide cavity and a mounting cavity inside. The guide cavity extends along the horizontal axis, and the mounting cavity extends along the vertical direction. The top surface of the main hook has a countersunk operating window that communicates with the mounting cavity. The drive mechanism is installed inside the mounting cavity, and the locking mechanism is installed inside the guide cavity. The drive mechanism includes a rotating shaft and a cam. The rotating shaft is installed inside the mounting cavity, and the cam is eccentrically fixed below the rotating shaft and is connected to the locking mechanism in a transmission connection. The cam has a self-locking surface at its maximum rotation radius. When the cam rotates to its maximum stroke, the self-locking surface forms a surface contact limit with the locking mechanism.

2. A heavy-duty construction steel scaffolding equipped with a self-locking anti-slip mechanism according to claim 1, characterized in that: The guide slide cavity is provided with a reset elastic member. One end of the reset elastic member abuts against the inner wall of the guide slide cavity, and the other end of the reset elastic member is connected to the locking mechanism.

3. A heavy-duty construction steel scaffolding equipped with a self-locking anti-slip mechanism according to claim 1, characterized in that: The bottom of the guide cavity is provided with an outwardly downward inclined drainage hole, which extends through the guide cavity.

4. A heavy-duty construction steel scaffolding equipped with a self-locking anti-slip mechanism according to claim 1, characterized in that: The top of the rotating shaft is provided with an enlarged disc flange, and a sealing groove is provided on the side circumferential surface of the disc flange. The sealing groove forms a clearance fit with the inner wall of the countersunk operating window.

5. A heavy-duty construction steel scaffolding equipped with a self-locking anti-slip mechanism according to claim 4, characterized in that: The disc flange has a drive hole at the center of its top surface, and the drive hole is configured with an irregular shape.

6. A heavy-duty construction steel scaffolding equipped with a self-locking anti-slip mechanism according to claim 1, characterized in that: The surface of the secondary hook that abuts against the main hook has a stabilizing groove. When adjacent steel scaffolds are locked, the locking mechanism is inserted into the stabilizing groove along the guide cavity.

7. A heavy-duty construction steel scaffolding equipped with a self-locking anti-slip mechanism according to claim 1, characterized in that: The guide cavity extends downwards towards the main pedal.

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