Anti-falling maintenance platform for tower

Abstract

The invention relates to the technical field of high-altitude operation safety facilities, in particular to an anti-falling maintenance platform for a tower, which comprises a first bearing assembly and a second bearing assembly which are symmetrically arranged, each of the first bearing assembly and the second bearing assembly comprises a main frame body extending along a first direction, and the first direction is orthogonal to the length direction of a cross beam; the hanging pieces are arranged at the two opposite ends of each main frame body and used for hanging the first bearing assembly and the second bearing assembly in the inner space, and a preset height difference is formed between the hanging pieces and the cross beam; the two telescopic ends of the rigid telescopic platform are connected with the side edges, facing each other, of the two main frame bodies respectively; when the first bearing assembly and the second bearing assembly are separated from each other in the length direction of the cross beams and are fixed in place, the rigid telescopic platform is unfolded to form a horizontal supporting platform located below the inner sides of the four cross beams, and the four cross beams are enclosed to form four anti-falling flanges, so that the dependence on additional building of enclosure components is reduced, and the construction cost is reduced. And the laying efficiency and the space adaptability are improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of high-altitude operation safety facilities, in particular to a tower anti-falling maintenance platform. BACKGROUND

[0002] With the large-scale maintenance and reconstruction of steel truss towers for power transmission and communication, the frequency of operations such as replacing fittings, fastening components, and laying cables by workers in the "barrel-shaped frame" (the inner space surrounded by four horizontal beams on the same layer) of the tower body has significantly increased. Such working conditions have put forward comprehensive requirements for temporary station platforms, including lightweight portability, on-site rapid deployment, reliable anti-falling, and low interference to tower components.

[0003] The current commonly used schemes mainly include: vehicle-mounted lifting platforms, suspended baskets, soft ladders / sitting board type rope access, and temporary scaffolding, temporary decking, etc. These schemes can be used when the terrain is open or the work is done outside the tower, but they have obvious limitations when used in the "barrel-shaped frame" inside the tower body.

[0004] Vehicle-mounted lifting platforms and hanging basket systems have large volumes and are obviously limited by terrain and wind conditions. In addition, the interior abdominal bars / supplementary beams of the tower body are staggered and dense, making it difficult to provide continuous layout and rotation space. Setting up scaffolding inside the tower requires a large number of components and anchor points, which is heavy to carry and dismantle.

[0005] Without a platform, maintenance personnel often directly step on the horizontal beams or abdominal bars to operate, which has a narrow operating surface and insufficient stability. The double-hook safety rope is usually hung at the same layer or slightly lower position, and the vertical drop is amplified when a slip occurs, limiting the braking space.

[0006] To carry tools, cables, anti-falling systems, and other accessories, temporary suspension of bags or binding of small steps is often required. If additional protective railings or edges are arranged, the number of components is large and they easily interfere with the tower body components, the construction steps are many and time-consuming. At the same time, the multi-piece components are scattered and not easy to carry as a whole, making high-altitude transportation and secondary assembly complex, which affects the efficiency of maintenance.

[0007] In summary, when steel truss tower workers operate in the "barrel-shaped frame" surrounded by four horizontal beams on the same layer, there is a lack of a stable operating platform attached to the tower. The existing platform cannot simultaneously meet the requirements of portable transportation, rapid deployment, reliable positioning on the tower body, and forming a stable operating surface. In addition, it has high dependence on surrounding components and insufficient flexibility in layout, making it difficult to adapt to the limited space of the barrel-shaped frame. SUMMARY

[0008] (I) The technical problem solved by the present application is that high-rise truss towers are often located in mountainous, tidal or cross-river terrain, and large lifting platforms and baskets are difficult to transport and arrange, lacking portability, and maintenance personnel can only directly step on narrow beams for work, lacking stable horizontal support surface. The double-hook safety rope increases the falling stroke due to the low hanging point, and the operation process lacks lateral protection, making it difficult to control the falling risk.

[0009] (II) Technical solution To solve the above technical problems, the present application provides a tower anti-falling maintenance platform installed between the tower beam and the tower support structure below the beam, comprising: Symmetrically arranged first and second bearing assemblies, each comprising a main frame body extending in a first direction orthogonal to the length direction of the beam; Hanging pieces arranged at opposite ends of each main frame body, which are used for detachable fixed connection with opposite two of the four beams, so as to suspend the first and second bearing assemblies in the inner space and have a predetermined height difference relative to the beam; A rigid telescopic platform, whose two telescopic ends are connected to the sides of the two main frame bodies facing each other; When the first and second bearing assemblies are separated from each other along the length direction of the beam and fixed in place, the rigid telescopic platform is unfolded to form a horizontal support platform below the inner side of the four beams, and the four beams form four edge anti-falling edges around the horizontal support platform; when the first and second bearing assemblies approach each other, the rigid telescopic platform is folded and fitted between the two main frame bodies.

[0010] According to one embodiment of the present application, the tower anti-falling maintenance platform further comprises an external platform, which comprises: Two external support rods arranged along the length direction of the main frame body of the first and second bearing assemblies and slidable relative to the main frame body, embedded in the guide slide of the main frame body, and the outer end of each rod is extended outwards along a direction perpendicular to the beam through the auxiliary beam gap between the adjacent beams of the same layer of the tower and locked in the extended position; A roll-out board carrier arranged in the accommodation cavity on one side of the first bearing assembly and arranged along the length direction of the main frame body, which is moved out of the accommodation cavity by a moving mechanism arranged in the accommodation cavity and rotated relative to the external support rod to a laying position above the two external support rods and parallel to the beam, and in the laying position, the roll-out board carried by the roll-out board carrier is unfolded along its length direction and arranged above the two external support rods, forming the support surface of the external platform.

[0011] Through the structure and unfolding sequence of the outreach platform, a reliable auxiliary work surface can be formed in the limited channel: the outreach support rods are extended outward along the guide slide of the main frame body and locked at the extended position, the movement path is linearly constrained, and positioning can be completed in the auxiliary beam gap between adjacent cross beams, reducing the sweeping and interference of the tower body members; the two ends of the locked force boundary is clear, providing stable support for subsequent laying. Subsequently, the roll-out board carrier is moved out of the accommodating cavity and transferred to the laying position parallel to the cross beam, the roll-out board is unfolded along the length direction and placed on the two outreach support rods to form a support surface, the load is transmitted through the outreach support rods and the main frame body, the stress path is clear, the bearing state is stable, and the work personnel can stand on it to implement close-range maintenance on the outside of the tower. At the same time, the support surface is also used to place tools and materials, and the inner and outer platforms realize functional partitioning, reducing the mutual interference of personnel and objects on the same work surface and reducing the risk of tripping. After the work is completed, the carrier and the roll-out board are recovered to the accommodating cavity in the reverse order, the outreach support rods are retracted along the guide slide and unlocked, and the outer contour returns to the contour of the main frame body, facilitating interlayer transfer and rapid unfolding again, and improving the deployment and recovery efficiency of high-altitude work.

[0012] According to an embodiment of the present application, the protruding end of the outreach support rod is provided with a locking portion; The roll-out board carrier is a long strip block, and the bottom thereof is provided in parallel with a sliding groove corresponding to the two outreach support rods, the sliding groove can be sleeved on the two outreach support rods and slide along the length direction of the outreach support rods, and when the roll-out board carrier slides to the position of the locking portion, the roll-out board carrier is detachably locked with the locking portion.

[0013] The cooperation of the sliding groove-outreach support rod-locking portion enables the roll-out board carrier to complete the guidance, centering and locking in place before laying: the two parallel sliding grooves at the bottom of the carrier are sleeved on the two outreach support rods, and when translating along the length direction of the support rods, the attitude of the carrier is constrained by two points to keep parallel with the axis of the support rods, reducing lateral shaking and improving torsional stability; when sliding to the position of the locking portion at the protruding end, the carrier is detachably locked with the locking portion, forming axial stop and end anti-disengagement, avoiding back-off and movement during loading, and being able to slide back along the original path after unlocking. By locking the carrier at the outer end, the carrier body does not occupy the butt joint of the inner and outer platforms, the butt joint is only penetrated by the laying surface of the roll-out board, and the transition under the feet of personnel moving between the inner and outer platforms is smoother, thereby reducing the risk of tripping; at the same time, the end locking of the carrier provides a repeated positioning reference, the load is transmitted to the main frame body through the carrier and the two support rods, the stress path is clear, and it is convenient to quickly reproduce a stable support state under the same working conditions and shorten the high-altitude deployment and recovery time.

[0014] According to an embodiment of the present application, the accommodating cavity is a through cavity with two open sides arranged along the length direction of the main frame body; The outreach support rods can selectively extend to either side of the main frame along the guide slide and be locked, and each of the extension ends of each of the outreach support rods is provided with a locking part; The roll-out board carrier can be selectively moved out of the accommodating cavity to either side by the moving-out mechanism, and be rotated to a laying position relative to the two outreach support rods on the side, so that the roll-out board is straddled on the two outreach support rods on the side.

[0015] The through accommodating cavity on both sides cooperates with the optional side-extending outreach support rods and the optional side-moving-out roll-out board carrier, so that the outreach platform can be established on either side as needed without configuring two independent outreach mechanisms. In operation, according to the position of the on-site obstacles and the work objects, the left side or the right side is selected: the outreach support rods on the corresponding side extend along the guide slide and are locked in place at the extension ends by the locking parts, the carrier is moved out of the accommodating cavity to the same side and rotated to the laying position, and the roll-out board is straddled on the two outreach support rods on the side to form a support surface. Since the locking parts are arranged at both ends, the stress boundary and support conditions on the left and right sides remain consistent, and there is no need to replace components or additional adjustment when switching sides. The rearrangement can be completed by changing the lateral position of the carrier and the support rods in the through cavity. This scheme covers both sides with one set, reduces the number of components and the occupied volume, and improves the convenience of carrying and transportation. At the same time, the outreach platform is only deployed on the selected side, and the other side maintains the profile of the main frame, without occupying the internal platform passage, which is beneficial for personnel and materials to pass through. By arranging the outreach platform close to the conductor cross arm and its attached fittings (such as insulator strings, wire clamps, and jumper support), interference points can be avoided in the limited bar area and the approach path can be shortened, thereby improving the adaptability and arrangement efficiency of lateral maintenance.

[0016] According to one embodiment of the present application, two rail receiving grooves are arranged on the top of the roll-out board carrier along the length direction thereof; A set of folding rails is foldably installed in each of the rail receiving grooves, and the folding rails comprise: a vertical rod body, which is hingedly connected to the top of the roll-out board carrier through a folding piece and is limited to a vertical standing position by a limiting piece; a first transverse rod body and a second transverse rod body, which are respectively rotatably connected to the upper end of the vertical rod body and can be extended and retracted along the respective length directions, and are perpendicular to each other in space; The first transverse rod body is unfolded in a direction parallel to the cross beam and is detachably connected to the end of the first transverse rod body of another set of folding rails, and the second transverse rod body is unfolded in a direction perpendicular to the cross beam and is detachably connected to the cross beam through a connecting piece arranged at the end of the second transverse rod body.

[0017] The folding guardrail in the guardrail storage groove is integrally arranged with the rolling and unfolding board carrier, and each component is flush with the top of the carrier when it is folded, without increasing the outer dimension, without occupying the working surface, and reducing the risk of hooking when passing through. When no one stays on the external expansion platform, the folding state can be maintained, the upper surface of the external expansion platform is continuous and flat, and the unmanned aerial vehicle can be delivered or landed on the platform. When a person needs to stand, the vertical rod body is turned up by the turning piece and directly positioned in the vertical standing position by the limiting piece. The angle and height of the repeated unfolding are consistent. The first transverse rod body extends along the direction parallel to the cross beam and is detachably connected with the end of the first transverse rod body of the other group of folding guardrails, forming a through lateral protection line, and the length extension can compensate for the distance change between the two groups. The second transverse rod body is unfolded along the direction perpendicular to the cross beam and is detachably connected with the cross beam through the end connector, so that the guardrail frame and the tower component are pulled and connected, the lateral stiffness is improved, and the swing under the action of personnel leaning or wind disturbance is reduced. The above folding and extension cooperation makes the guardrail "not occupy the volume when no protection is needed, and quickly form when protection is needed", which not only meets the requirements of the external expansion platform as a personnel standing surface for falling protection, but also considers the passing and arrangement efficiency under the scenes of unmanned aerial vehicle delivery and temporary placement of tools.

[0018] According to one embodiment of the present application, the rolling and unfolding board carrier is provided with auxiliary lifting members at both ends along the length direction; One end of each auxiliary lifting member is connected with the end of the corresponding rolling and unfolding board carrier, and the other end is detachably fixedly connected with the adjacent cross beam on the same layer of the tower.

[0019] The auxiliary lifting members arranged at both ends of the rolling and unfolding board carrier are connected with the end of the rolling and unfolding board carrier at one end and detachably fixedly connected with the adjacent cross beam on the same layer at the other end, so that the external expansion platform forms a support system jointly borne by two stress paths after being unfolded: one is that the load is transmitted to the main frame body through the external expansion support rod and the guide slide; the other is that the load is directly transmitted to the adjacent cross beam through the auxiliary lifting member. Thus, the bending moment and shear force on the external expansion support rod and the main frame body are shared, the deflection of the rolling and unfolding board carrier along the support rod and the torsion of the rolling and unfolding board carrier around the axis of the support rod are reduced, the overall stiffness and tread stability of the support surface are improved, and the personnel standing and short-time concentrated placement of tools and materials are suitable. The detachable fixed connection of the auxiliary lifting member and the cross beam facilitates quick hanging and removal. Under the pulsating load generated by side wind, starting and stopping steps or external work, the end of the rolling and unfolding board carrier is controlled, the platform edge swing converges, the coupling disturbance to the inner platform and the guide slide is reduced, and thus the unfolding reliability and use safety of the external expansion platform under different tower types and position conditions are improved.

[0020] According to one embodiment of the present application, the rigid telescopic platform is composed of a plurality of equal-width rigid plates connected in series at the head and tail, and a first rotation shaft and a second rotation shaft are arranged in parallel between each pair of adjacent plates, and the first rotation shaft and the second rotation shaft are respectively adjacent to the upper edge and the lower edge of each plate to guide the coplanar arrangement of each plate in the unfolded position and the stacked arrangement of each plate in the folded position. The main frame body of the second bearing assembly is provided with a containing groove extending along the length direction of the main frame body on one side of the first bearing assembly, and the containing groove is a two-layer structure adjacent to each other in the vertical direction, and the lower layer is used for accommodating the rigid telescopic platform; A covering board is arranged on the upper layer of the containing groove along the length direction; In the unfolded position, the covering board can be unfolded from the upper layer of the containing groove along the length direction of the main frame body and laid on the rigid telescopic platform; in the folded position, the rigid telescopic platform and the covering board are accommodated in the containing groove.

[0021] The rigid telescopic platform is composed of equal-width plates connected in series at the head and tail, and a first rotating shaft and a second rotating shaft are arranged near the upper and lower edges, respectively, each plate is naturally leveled and laid in a coplanar manner under the synchronous guidance of the two rotating shafts when unfolded, the tread surface does not appear steps and misalignments, and personnel walking and carrying are more stable; when folded, each plate is sequentially flipped up and stacked and pressed along the opposite track, the stroke is short, the resistance is small, and it is convenient to quickly switch from the working position to the folded position at a high place. The main frame body of the second bearing assembly is provided with two-layer containing grooves extending along the length direction, the lower layer accommodates the rigid telescopic platform, and the upper layer accommodates the covering board, so that the two types of laying members are arranged on the same side: when unfolded, the covering board slides out along the length direction of the main frame body and covers the rigid telescopic platform, bridges the gap between the plate pieces, and forms a continuous and flat working tread surface; when folded, the two are jointly lowered to the corresponding layer position, and are shielded by the side wall of the groove body, the outer contour is maintained within the thickness range of the main frame body, which reduces the bumping and jamming of exposed parts during carrying, reduces the folded volume and the resistance of tower climbing transportation, and makes the re-unfolding alignment path clear and consistent, shortens the on-site deployment and withdrawal time.

[0022] According to one embodiment of the application, the bottom of each main frame body is provided with a bottom receiving cavity extending along the length direction of the main frame body; Four support rods are rotatably connected to the bottoms of the two main frame bodies through folding members, and each main frame body is correspondingly provided with two support rods, the two support rods are arranged in the bottom receiving cavity and can be folded and moved between the bottom receiving cavity and an outward swinging position, and the folding directions of the two support rods located on the same main frame body are opposite; In the outward swinging position, the free ends of the support rods are directed to the opposite sides of the main frame body and are fixedly connected to the tower cross beam or inclined beam below the horizontal support platform through detachable connecting members.

[0023] The bottom storage cavity centrally and hiddenly arranges the four support rods, each rod body is flush with the bottom surface of the main frame body when being folded, and does not increase the outer contour of the device; when being unfolded, the support rods are folded by the folding pieces and unfolded from the storage cavity to the outer swing position. The folding directions of the two support rods on each main frame body are opposite, so that the free ends thereof respectively point to the opposite sides of the main frame body, and are convenient for being quickly fixed by the detachable connecting pieces with the cross beams or inclined beams located below the horizontal support platform. Thus, the pair of arranged multi-point support channels are formed below the device: on the one hand, the suspended platform obtains the downward support constraint from the two sides of the tower body, the swing range is limited, the lateral and torsional stiffness is improved, and the attitude change caused by wind disturbance and personnel stepping is inhibited; on the other hand, the support effect is directly transmitted to the lower rod, and the predetermined height relationship of the platform relative to the cross beam of the same layer is more easily maintained. The reverse folding structure relationship also makes the two rods not interfere with each other in the folding path, the resetting action is simplified, the switching between the working position and the folding position is convenient at a high place, and the repetitive operation of the locking in position and unlocking is realized through the detachable connecting pieces, so that the deployment efficiency under different tower types and different downward support position conditions is improved.

[0024] According to one embodiment of the application, the hanging piece is a telescopic hanging piece, provided with a length adjustment locking piece, which can be locked at any position in the telescopic stroke; The support rod is a telescopic support rod, provided with a length adjustment locking piece, which can be locked at any position in the telescopic stroke; In the unfolded position, the effective lengths of each telescopic hanging piece and each telescopic support rod can be independently or jointly adjusted, so that the relative distance between the rigid telescopic platform and the outer platform is adjustable, and a working gap is left between the rigid telescopic platform and the tower.

[0025] The telescopic hanging piece and the telescopic support rod are both provided with a length adjustment locking piece, which can be reliably locked at any position in the telescopic stroke, thereby obtaining a refined geometric setting capability in a limited space. In the unfolded position, the operator adjusts the effective lengths of each hanging piece and each support rod independently or jointly, so that the height relationship of the platform relative to the cross beam of the same layer is quickly reproduced and kept stable; when it is necessary to transfer objects or perform lateral operations close to the outer platform, the distance between the two platforms can be appropriately reduced, which is convenient for cross-face operation and personnel movement; at the same time, a continuous working gap is left between the rigid telescopic platform and the tower on the other side, which is used for tool swinging, cable and anti-falling rope passing, and avoids abrasion and dust accumulation caused by direct contact between the platform and the rod. The characteristic of locking at any position ensures that each rod body forms a bearing state after the length is determined, without relying on pre-set hole positions or fixed positions to adapt to different tower types, different cross beam distances and on-site tolerances, reduces the number of repeated hanging and secondary positioning, and improves the efficiency of high-altitude arrangement and the stability of the operation process.

[0026] According to one embodiment of the present application, the main frame body of the first bearing assembly is provided with a secondary groove body opposite to the accommodating groove, and the depth of the secondary groove body is smaller than that of the accommodating groove; in the folding state of the first bearing assembly and the second bearing assembly, the accommodating groove and the secondary groove body are mutually butted and jointly enclose an accommodating space for accommodating the rigid telescopic platform and the unfolding board; at the mutually butted end, the opposite groove side walls of the accommodating groove and the secondary groove body are provided with plug-in locking members, which are used for detachably locking the butted two main frame bodies when the rigid telescopic platform is in the folding state.

[0027] The accommodating groove and the secondary groove body adopt the arrangement of "deep and shallow cooperation and butting enclosure", and in the folding state of the first bearing assembly and the second bearing assembly, the two groove bodies jointly enclose a closed accommodating space for accommodating the rigid telescopic platform and the unfolding board: thus, the board and the unfolding member are in a hidden state shielded by the side walls during transportation and tower climbing, the exposed edges and the hinge are free from bumping, dust accumulation and rain influence, and the unfolding is smooth and the risk of jamming is reduced; meanwhile, the outer contour of the device is controlled by the thickness of the two main frame bodies, and no local bulging and hanging points are generated, which facilitates the transfer in narrow passages. The depth of the secondary groove body is smaller than that of the accommodating groove, so that the first bearing assembly can consider the cavity arrangement thereon without thickening, and the left and right dimensions of the whole machine after folding are close to each other, the gravity distribution is more balanced, and the carrying and high-position transposition are more stable. The opposite side walls of the two grooves play a natural guiding and limiting role on the board group when butted, which facilitates the quick finding of the closed position. The plug-in locking members arranged on the opposite groove side walls detachably lock the two main frame bodies as a whole in the folding state, avoid relative sliding or accidental opening caused by bumping, reduce abnormal sound and looseness, and can be released through single unlocking when unfolding is needed, thereby shortening the deployment time and improving the consistency of repeated deployment.

[0028] (Three) The beneficial effects of the present application: through the first bearing assembly and the second bearing assembly arranged opposite to each other, cooperating with the hanging members arranged at opposite two ends of each main frame body, taking the same layer opposite beam as the detachable connection reference, suspending the platform in the barrel-shaped frame, and establishing a preset height difference relative to the beam in the vertical direction, the quick positioning in the limited space and the stable reproduction of the elevation reference are realized.

[0029] When the two bearing assemblies are separated along the beam direction and fixed in position, the two telescopic ends of the rigid telescopic platform are unfolded with the two main frame bodies and flattened therebetween, forming a horizontal working surface located below the inner side of the four beams, and the four beams form four edge anti-falling barriers, reducing the dependence on the separately erected enclosure members, and improving the deployment efficiency and space adaptability.

[0030] When the two bearing assemblies move towards each other, the rigid telescopic platform is folded and fitted between the two main frame bodies, so that the device is compact in size and components are concentrated in the folded state, facilitating carrying and transportation to the tower, and meeting the rapid deployment and withdrawal requirements of high-altitude operation. BRIEF DESCRIPTION OF DRAWINGS

[0031] In order to more clearly illustrate the specific embodiments of the present application or the technical solutions in the prior art, the drawings needed in the specific embodiments or prior art description will be briefly introduced below. Obviously, the drawings in the following description are some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0032] Figure 1 The unfolded state three-dimensional structure schematic diagram of the tower anti-falling maintenance platform provided by an embodiment of the present application is erected on the tower; Figure 2 The unfolded state structure schematic diagram of the tower anti-falling maintenance platform provided by an embodiment of the present application is erected on the tower; Figure 3 The unfolded state three-dimensional structure schematic diagram of the tower anti-falling maintenance platform provided by an embodiment of the present application is erected on the tower; Figure 3 The unfolded state three-dimensional structure schematic diagram of the tower anti-falling maintenance platform provided by an embodiment of the present application is erected on the tower; Figure 4 The first perspective three-dimensional structure schematic diagram of the unfolded state of the tower anti-falling maintenance platform provided by an embodiment of the present application; Figure 5 The second perspective three-dimensional structure schematic diagram of the unfolded state of the tower anti-falling maintenance platform provided by an embodiment of the present application; Figure 6 The three-dimensional structure schematic diagram of the tower anti-falling maintenance platform provided by an embodiment of the present application is erected on the tower; Figure 7 The three-dimensional structure schematic diagram of the tower anti-falling maintenance platform provided by an embodiment of the present application is erected on the tower; Figure 8 The three-dimensional structure schematic diagram of the tower anti-falling maintenance platform provided by an embodiment of the present application is erected on the tower; Figure 9 The three-dimensional structure schematic diagram of the tower anti-falling maintenance platform provided by an embodiment of the present application is erected on the tower; Figure 10 The three-dimensional structure schematic diagram of the tower anti-falling maintenance platform provided by an embodiment of the present application is erected on the tower;

[0033] Icons: 101, First load-bearing component; 102, Second load-bearing component; 1, Lifting member; 2, Rigid telescopic platform; 21, Receiving groove; 211, Auxiliary groove body; 22, Covering plate; 3, Outward support rod; 31, Locking part; 4, Roll-up plate carrier; 41, Receiving cavity; 42, Removal mechanism; 421, Guide rail; 422, Clamping sliding member; 43, Roll-up plate; 44, Slide groove; 45, Railing storage groove; 46, Folding railing; 461, Vertical rod; 462, First transverse rod; 463, Second transverse rod; 47, Auxiliary lifting member; 5, Support rod; 51, Bottom storage cavity; 6, Insertion locking member; 20, Tower; 201, Crossbeam; 202, Conductor crossarm. Detailed Implementation

[0034] To better understand the above-mentioned objectives, features, and advantages of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. Unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. 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. Specific implementation examples: like Figures 1 to 10 As shown, this embodiment is applicable to maintenance work carried out on steel truss towers used for power transmission and communication within a "barrel-shaped frame" formed by four horizontal beams 201 on the same floor. Work sites often involve mountainous and tidal flat tower locations, cross-river and valley passages, and island and farmland boundaries, where access is restricted. Personnel typically need to walk or climb to the target floor and complete platform deployment, operations, and dismantling within narrow passages inside the tower. Fluctuating wind speeds, densely packed towers, obstructed access paths, long material transport distances, and insufficient temporary storage space for equipment are typical constraints for on-site operations.

[0036] In this scenario, the platform is used to quickly establish a stable working area inside the "barrel frame", forming an inner platform for personnel to stand and tools to be placed, and to establish an outward platform on one side of the tower body as needed to meet the requirements for close approach and lateral operation of the conductor crossarm 202 and its auxiliary hardware.

[0037] The tower 20 of the anti-falling maintenance platform of the embodiment comprises an inner platform mainly installed in the inner space surrounded by the four beams 201 of the same layer of the tower 20 and an outer platform attached to the inner platform. The inner platform, as the main body, comprises a first bearing assembly 101 and a second bearing assembly 102 symmetrically arranged. The first bearing assembly 101 and the second bearing assembly 102 each comprise a main frame body extending in a first direction. In this embodiment, the first bearing assembly 101 and the second bearing assembly 102 are both long strip-shaped plate-shaped main frame bodies, and the first direction is orthogonal to the length direction of the beam 201. As shown in Figures 3 to 8 The main frame body of the inner platform is a plate-shaped long strip, and a straight connecting edge is formed in the first direction to continuously articulate or guide the telescopic end of the rigid telescopic platform 2. The other side is the outer boundary close to the tower 20, and the edge can be chamfered or rounded to transition to conform to the passageway in the barrel-shaped frame and reduce the risk of interference with the ropes and cables. The two main frame bodies are arranged in an opposite manner, and the length direction is orthogonal to the length direction of the beam 201. Thus, clear stress end points are formed in the connecting areas at the opposite ends, and the unfolded platform can form a flat standing surface together with the rigid telescopic platform 2. When folded, the opposite sides of the main frame body define the envelope gap of the rigid telescopic platform 2, so that the folded plates are shielded by the side plates, facilitating high-altitude transportation.

[0038] The hanging piece 1 is arranged at the opposite ends of each main frame body and establishes a detachable connection with the opposite beam 201 of the same layer. The telescopic section composed of an inner sleeve and an outer sleeve is preferably arranged integrally with the fitting section close to the beam 201. The clamping surface or the surrounding surface of the fitting section matches the shape of the beam 201 to form a stable abutting and anti-sliding interface. The telescopic section is used to adjust and lock the vertical elevation. The length adjustment and locking member can adopt eccentric quick clamping, threaded clamping or tapered sleeve wedge tightening and other effective solutions. The common principle is to establish reliable constraint through radial compression and axial friction fit at the selected length position, thereby realizing self-locking at any position within the stroke. During installation, the beam 201 is first positioned as a reference, and then the synchronous or differential adjustment of the two end hanging pieces 1 is performed to establish a predetermined height difference between the inner platform and the beam 201. The height difference can be set in the range of about 0.8 meters to 1.4 meters according to the tower type and the working posture to ensure the required headroom for standing and tool passing and to avoid mutual interference with the beam 201. After locking, the hanging piece 1 limits the relative displacement in the first direction and the vertical direction, and cooperates with the plate-shaped inertia of the main frame body to improve the out-of-plane torsional resistance and form a stable suspended reference.

[0039] As shown in Figures 3 to 7As shown, the bottom storage cavity 51 is arranged along the bottom surface of the main frame body in the same direction as the first direction, and is used to accommodate the retractable stroke of the guide support rod 5. The support rod 5 is rotatably connected to the bottom surface of the main frame body through a folding piece, and when in the storage position, the rod body is flush with the bottom surface, and when in the outward swinging position, it is flipped outward beyond the outer contour of the main frame body around the folding axis. Each main frame body is provided with two support rods 5, and the folding directions of the two are opposite, and the free ends thereof are respectively directed to the opposite sides of the main frame body in the outward swinging position, so as to be quickly fixed with the cross beam 201 or the inclined beam below the horizontal support platform through the detachable connecting piece. Thus, a bilateral symmetrical under-supporting path is formed below the device, which is suspended by the hanging piece 1 above and supported by the support rod 5 below, the stress path is clear, the lateral swinging and out-of-plane torsion can be inhibited, and the aforementioned preset height difference can be maintained during the bearing process.

[0040] The support rod 5 is of a telescopic structure and is provided with a length adjusting and locking piece, which can be reliably locked at any extended length. The locking mechanism can adopt the same principle as the hanging piece 1, such as eccentric quick clamping, threaded clamping or tapered sleeve wedging, to meet the requirement of keeping the length from retracting under stress. When unfolded, temporary positioning can be established at the target rod piece through the detachable connecting piece, and then the stable geometric relationship between the supporting point and the upper hanging point is formed through the fine adjustment of the length of the support rod 5; when folded, the connection is released in reverse order and the support rod 5 is folded back into the bottom storage cavity 51, and the relative position of the folding piece and the storage cavity defines the retraction limit angle and path, avoiding the mutual interference between the rod body and the edge of the main frame body, and improving the consistency of repeated deployment.

[0041] As the two ends of the rigid telescopic platform 2 are respectively connected to the straight boundary of the two main frame bodies facing each other, preferably a linear rotary pair or an equivalent guide pair arranged along the first direction is adopted, so that each plate is unfolded along the parallel axis in sequence and automatically leveled when unfolded, and the standing surface is substantially coplanar with the upper surface of the main frame body; when folded, each plate is sequentially stacked along the opposite path, and finally fits between the two main frame bodies. In order to reduce the looseness and noise in high-altitude operation, the connecting edge can be provided with a stop or a buffer block matched with the plate stroke, to limit the limit angle and absorb the slight impact at the end of unfolding. Through the above connection and envelope relationship, the rigid telescopic platform 2 is constrained by the side edge of the main frame body in both unfolded and folded states, which not only ensures the surface continuity of the working position, but also ensures the compactness of the folded position, thereby providing a stable reference for the relative position adjustment between the inner platform and the outer platform.

[0042] As Figure 7As shown, further, in this embodiment, the rigid and flexible platform 2 is preferably composed of equal-width plates connected end to end, the first and second rotating shafts are arranged adjacent to the upper and lower edges of each plate, respectively, the shaft axes are parallel to the first direction, the plates are alternately rotated by a small angle around the two parallel axes during the unfolding process, the rotation centers are distributed up and down along the plate thickness, the upper surfaces of adjacent plates are automatically leveled and form a continuous tread at the end of the unfolding process; during the folding process, the plates are sequentially rotated in the opposite direction and stacked in a predetermined stacking order, the stacking thickness is defined by the axial spacing of the rotating shafts and the overlapping relationship of the plate ends, the stack boundaries are neat and match the envelope gap between the two main frame bodies. To ensure the consistency of the surface shape during repeated unfolding, a limiting shoulder surface or a stop chamfer extending along the first direction can be provided near the rotating shafts of each plate near the upper and lower edges, so that the plates form a self-limiting fit in linear or surface contact at the end of the unfolding, thereby suppressing the slight rotation angle overtravel; the overlapping edges of adjacent plates can be chamfered or rounded to reduce edge interference during folding and unfolding and reduce noise.

[0043] The main frame body of the second bearing assembly 102 is provided with a receiving groove 21 extending in the length direction thereof, the receiving groove 21 has a two-layer structure adjacent in the up-down direction, the lower layer is used for accommodating the rigid and flexible platform 2, and the upper layer is used for accommodating the covering and unfolding plate 22. The lower layer of the receiving groove 21 forms three-face support for the stack at the groove bottom and the side wall, the stack is constrained by the side wall gap in the folded position to limit the lateral movement, and is partially supported by the groove bottom to distribute the weight; the upper layer is used for the folding and unfolding of the covering and unfolding plate 22, the covering and unfolding plate 22 is laid above the rigid and flexible platform 2 in the length direction of the main frame body in the unfolded position to bridge the natural gaps between the plates, forming a continuous tread. The upper and lower layers of the receiving groove 21 are provided with gradually transitioned guide inclined surfaces at the opening end, so that the covering and unfolding plate 22 and the stack are guided into and out of the groove along a fixed path, avoiding edge bumping; to adapt to the manufacturing and assembly tolerances, the inner surface of the groove side wall can adopt a small-angle inwardly converging cross-sectional shape, so that the stack and the covering and unfolding plate 22 form a slight pre-pressing contact after being accommodated, reducing the shaking during transportation and tower climbing.

[0044] The main frame body of the first bearing assembly 101 is provided with a secondary groove body 211 opposite the accommodating groove 21, and the depth of the secondary groove body 211 is smaller than that of the accommodating groove 21, so as to ensure that, in the folding state in which the two bearing assemblies approach each other, the accommodating groove 21 and the mouth of the secondary groove body 211 are mutually connected and jointly form a closed accommodating space for the rigid telescopic platform 2 and the covering plate 22. When connected, the opposite side walls of the two grooves form a guiding channel in the length direction, the stack and the covering plate 22 are enveloped by the two side walls, and the step or chamfer between the mouths plays the role of automatic alignment and limiting, avoiding misalignment and damage. The opposite groove side walls are provided with a plug-in locking piece 6, which can detachably lock the two main frame bodies as a whole in the folding position. After locking, the groove mouth is tight, preventing the stack and the covering plate 22 from being axially or radially displaced due to vibration during transportation and handling; when unfolding is needed, the plug-in locking piece 6 is released, and the two groove bodies are smoothly separated under the guidance, and the stack is guided to sequentially flatten along the two end connecting edges.

[0045] In the working condition in which the bearing assemblies are separated along the length direction of the cross beam 201 and fixed in place, the rigid telescopic platform 2 is continuously and coplanarly laid by the above-mentioned double-axis guidance, and the upper surfaces of the two main frame bodies and the upper surface of the rigid telescopic platform 2 form a substantially consistent tread elevation in the thickness direction, facilitating personnel standing and passing; in the working condition in which the bearing assemblies approach each other, the rigid telescopic platform 2 is stacked and attached between the two main frame bodies in reverse sequence, the covering plate 22 is recovered to the upper layer of the accommodating groove 21, and the two are jointly entered into the accommodating space surrounded by the accommodating groove 21 and the secondary groove body 211, and the plug-in locking piece 6 completes the detachable locking of the two main frame bodies, so that the outer contour of the folding state is controlled within the thickness range of the two main frame bodies, meeting the repeated positioning requirements of transportation in narrow passages and further unfolding at high places.

[0046] The outer platform is arranged in dependence on the main frame body of the inner platform, the outer expansion support rod 3 is embedded in the guide slide in the length direction of the main frame body, the cross section of the outer expansion support rod 3 matches the cavity shape of the slide, and the outer expansion support rod 3 is laterally and vertically limited by the slide during sliding, so as to maintain a straight outward trajectory and reduce the sweeping of surrounding rod members when approaching the auxiliary beam gap between adjacent cross beams 201. The locking part 31 provided at the outer end of the outer expansion support rod 3 is used to form axial stop and end part anti-dropping after being extended to the outer extension position, cooperate with the constraint of the guide slide on the inner end, determine the two end support boundaries, and make the support surface established subsequently on the outer side have a clear stress starting point. In order to be compatible with different rod member gaps and outer extension strokes, the cooperation of the outer expansion support rod 3 and the slide can adopt equivalent ways of gap guidance or elastic fitting, as long as the functional requirements of straight line guidance and position locking are met, and the specific extension length is not greater than two-thirds of the length of the outer expansion support rod 3, so as to ensure the support strength.

[0047] The locking part 31 can adopt various equivalent structures with axial stop and radial anti-disengagement functions. For example, a pin-type stop is set at the end of the outward support rod 3, which uses a telescopic pin to interlock with the side wall insertion hole of the roll-up plate carrier 4 to achieve quick positioning and self-locking; another example is the use of a wedge-type clamping part or a rotating sleeve-ball positioning part, which provides radial clamping and axial limitation after being in place by means of inclined plane or elastic positioning element, all of which can meet the requirements that the carrier does not back out or move under force. Figure 9 As shown, in this embodiment, the locking part 31 is composed of a carrier groove provided at the extended end of the outward support rod 3 and a pin structure on the inner wall of the groove: the opening of the carrier groove faces the sliding direction of the roll-up plate carrier 4, the groove opening matches the cross section of the slide 44, and a guide chamfer is provided at the entrance to guide the port of the slide 44 to automatically align with the carrier groove; when the roll-up plate carrier 4 slides along the two outward support rods 3 to the extended end, the insertion hole on the side wall and the pin structure in the carrier groove are aligned under the cooperation of the guide chamfer and the transition surface of the side wall, and the pin extends out and inserts into the insertion hole under the action of the elastic force or the reset member, forming an axial stop and end anti-disengagement, and the contact surface between the side wall of the carrier and the carrier groove bears radial support and anti-torsional constraint. Upon release, the operator retracts the pin using a lever, pull ring, or push rod, allowing the roll-up plate carrier 4 to slide away in the opposite direction along the outward support rod 3. To improve the consistency and durability of repeated positioning, the inner wall of the carrier slot and the periphery of the insertion hole can be coated with a wear-resistant layer or locally hardened. The pin end is provided with a rounded corner or a tapered guide surface to improve the smoothness of insertion in polluted environments, and a stop shoulder surface with a small stroke is reserved at the bottom of the carrier slot to absorb the inertial impact at the end of the slide. The above-mentioned pin-type scheme and the wedge / rotation positioning scheme are compatible in terms of geometric boundaries and assembly / disassembly paths. Both can achieve symmetrical arrangement without changing the cooperation relationship between the outward support rod 3 and the roll-up plate carrier 4, thereby ensuring consistent locking feel and load-bearing rigidity when the left and right sides are unfolded.

[0048] The roll-out board carrier 4 is arranged in the accommodating cavity 41 on one side of the first bearing assembly 101 and is retracted and released along the length direction of the main frame parallel to the outer extension struts 3; the carrier is guided by the moving-out mechanism 42 and the accommodating cavity 41, preferably a combination of guide rails 421 and clamping sliding members 422, so that the carrier obtains stable linear guidance and anti-torsion support on the moving-out path. After the carrier is moved out to the area where the outer extension struts 3 are located, the spatial displacement is completed through the rotating pair between the carrier and the outer extension struts 3, so that the carrier is rotated to the laying position above the outer extension struts 3 and parallel to the cross beam 201. At this time, the roll-out board 43 is unfolded along the length direction thereof and is arranged above the two outer extension struts 3, and the two ends of the roll-out board 43 are supported by the outer extension struts 3. The in-plane load and the stepping force are transmitted to the main frame through the carrier, the outer extension struts 3 and the guide slide, the force transmission path is clear, and the support surface stiffness and stability meet the requirements of personnel standing and tool and material placing. After the work is completed, the carrier is retracted to the accommodating cavity 41 in the opposite order under the guidance of the moving-out mechanism 42, the roll-out board 43 is retracted and reset, the outer extension struts 3 are unlocked and are retracted along the guide slide, and are restored to the range of the outer contour of the main frame, so as to facilitate the transfer and re-unfolding in the interlayer and narrow channel.

[0049] The moving-out mechanism 42 is specifically composed of guide rails 421 extending outwardly in the accommodating cavity 41 and clamping sliding members 422 matched with the guide rails 421. The guide rails 421 are linear segments in the accommodating cavity 41, used for guiding the linear movement of the roll-out board carrier 4 along the length direction of the main frame; the moving-out end close to the tower 20 is provided with an arc segment smoothly connected with the linear segment, the curvature of the arc segment is continuous, and the arc length corresponds to about one-fourth of the circumference, so that the roll-out board carrier 4 can complete the ninety-degree turning from the “length direction of the main frame” to the “parallel direction of the cross beam 201” under the geometric constraint of the guide rails 421 after being pushed out of the accommodating cavity 41. The transition surface of the linear segment and the arc segment is connected smoothly, so as to avoid the generation of a jamming point and lateral shaking when the carrier passes through the transition area, and to ensure the posture stability and the relative height relationship with the outer extension struts 3 during the turning process.

[0050] As Figure 10As shown, the clamping slider 422 is slidably assembled on the guide rail 421, and includes two oppositely arranged clamping jaws, the opening and closing direction of which corresponds to the width direction of the rolling and spreading board carrier 4. The front end of the clamping jaw is provided with a retractable drive pulley, which forms rolling contact with the side or bottom surface of the rolling and spreading board carrier 4 when extended, and is separated from the carrier to separate the carrier from the clamping slider 422 when the rolling and spreading board carrier 4 is laid out. In operation, the clamping slider 422 is first moved to one end of the rolling and spreading board carrier 4 along the guide rail 421, the carrier is clamped by the closing of the two clamping jaws, and the drive pulley is extended to enable the driving force to be transmitted to the carrier in a rolling manner, thereby driving the carrier to move out along the straight section; when sliding into the arc section, the carrier is pushed along the guide rail 421 to rotate along the arc, and the posture is gradually rotated to be parallel to the cross beam 201. When the carrier is located in the laying area above the two outer stretching struts 3, the drive pulley is retracted, the clamping jaw is loosened, and the rolling and spreading board carrier 4 falls and is laid on the two outer stretching struts 3 under the action of its own weight and the support of the outer stretching struts 3, thereby completing the continuous action from "linear movement out" to "turning and laying". The structure realizes the unified constraint of the path and the angle through the geometric shape of the guide rail 421, and the clamping slider 422 provides clamping and pushing functions at selectable end positions, which not only reduces the frictional resistance and the wear on the surface of the carrier, but also facilitates rapid separation at the final laying position, thereby facilitating the subsequent unfolding of the rolling and spreading board 43 and the forming of the support surface.

[0051] Further, after the rolling and spreading board carrier 4 is guided by the moving-out mechanism 42 to the laying position, the two parallel sliding grooves 44 on the bottom of the carrier are respectively sleeved on the two outer stretching struts 3, the opening of the sliding groove 44 is downward or laterally arranged, the groove wall is in surface contact or line contact with the outer contour of the outer stretching struts 3, and the sliding groove 44 allows low-resistance sliding along the length direction of the outer stretching struts 3 and forms lifting limiting in the radial direction to prevent the carrier from falling off. A guide chamfer is arranged at the entrance of the sliding groove 44, and when the carrier is transferred from the guide rail 421 to above the outer stretching struts 3, the chamfer is aligned and guides the sliding groove 44 to be coaxially sleeved on the struts; then the carrier slides along the two outer stretching struts 3 to the extension end of each outer stretching strut 3 under the action of its own weight and the pushing force, and the locking portion 31 at the extension end forms a detachable locking connection with the end portion of the carrier, thereby providing axial stopping and radial end anti-falling after locking, so that the carrier does not back off or move under stress. In order to improve the consistency of repeated positioning, the abutting surface of the locking portion 31 can be tapered or rounded, and the end port of the sliding groove 44 is provided with a matching transition surface, so that the carrier is guided to the position and locked without tools when sliding to the end portion. When unlocking, the transition surface is removed in the opposite direction and the carrier slides back along the outer stretching struts 3.

[0052] The accommodating cavity 41 is a through cavity with two open sides arranged along the length direction of the main frame body. The moving-out mechanism 42 is linearly guided by the carrier in the through cavity. The two ends of the guide rail 421 extend towards the two open sides respectively and are each provided with an outwardly extending arc segment which is smoothly connected with the straight segment. The clamping sliding member 422 can advance the carrier in the through cavity with either end as the working end. Thus, the operator can select the left side or the right side to implement the deployment according to the on-site obstacles and the position of the working surface: the outwardly extending support rod 3 on the corresponding side extends along the guide slide and is locked, and the extending end thereof serves as the position to be received by the locking portion 31; the carrier moves out through the outwardly extending arc segment of the guide rail 421 on the selected side and is transferred to the laying position. The sliding groove 44 is directly sleeved on the two outwardly extending support rods 3 on the side, then slides along the two rods to the extending end and completes the detachable locking connection with the locking portion 31. The arc segment of the guide rail 421 on the non-selected side remains idle with the opening, and the main frame body does not thicken, which does not affect the passage of the inner platform and the delivery of materials. Through the cooperation of the double-side opening of the through cavity and the outwardly extending support rod 3 with the locking portion 31 at both ends, the selective deployment and repeated locking of a single set of carrier on either side are realized, the number of components is reduced, and the arrangement efficiency and consistency when switching between the left and right working positions are improved.

[0053] Further, as shown in Figures 3 to 5 The railing accommodating groove 45 is arranged in a strip shape in the length direction of the roll-out plate carrier 4, the groove opening is flush with the upper surface of the roll-out plate carrier 4, and is used to accommodate all components of a set of folding railings 46 in the folded state. When unfolded, the vertical rod body 461 is flipped up around the folding piece between it and the top of the roll-out plate carrier 4, the flipping axis is arranged along the length direction of the roll-out plate carrier 4, and after crossing the center, it is limited to the vertical standing position by the limiting piece, thereby providing an upper end hinged base for the two transverse members. The first transverse rod body 462 and the second transverse rod body 463 are respectively rotatably connected at the upper end of the vertical rod body 461, and are perpendicular to the vertical rod body 461 in space, each being composed of an outer tube and an inner rod. When extended, the telescopic segments compensate for the butt joint distance, and when retracted, they are retracted to reduce the envelope. In the folding sequence, first, the telescopic segments of the two transverse support rods 5 are retracted, then they are folded towards the length direction of the roll-out plate carrier 4 with the rotating connection between them and the vertical rod body 461 as the center, so that the two transverse support rods 5 are arranged in parallel to the groove direction of the railing accommodating groove 45 and attached to the two sides of the vertical rod body 461, and then the vertical rod body 461 is flipped down into the groove, and is constrained by the positioning surface and the limiting surface of the groove wall, so that the three rod bodies are stacked and attached in the groove and flush with the groove opening. The reverse sequence is performed for resetting, first, the vertical rod body 461 is flipped up to the vertical standing position and is positioned by the limiting piece, then the two transverse support rods 5 are swung out one by one and extended to the position along their respective length directions.

[0054] In the working position, the first transverse rod body 462 is unfolded in a direction parallel to the cross beam 201, and the end thereof is detachably connected to the end of the first transverse rod body 462 of the other set of folding railings 46 after the length thereof is fine-adjusted through the telescopic section, so that the end connection forms a through lateral enclosure line and automatically absorbs the assembly tolerance between the two sets when the length changes. The second transverse rod body 463 is unfolded in a direction perpendicular to the cross beam 201, and the connector arranged at the end thereof is detachably connected to the cross beam 201, so that the three-sided enclosure formed by the vertical rod body 461, the first transverse rod body 462 and the second transverse rod body 463 forms a tension connection relationship with the tower 20 component, and the spatial geometry of the enclosure frame is determined by the vertical limiting and the end connection, so that the lateral swing of the personnel under the action of leaning or wind disturbance is controlled; when the enclosure is not needed, the two transverse support rods 5 are retracted and folded in the aforementioned order, the vertical rod body 461 falls into the railing storage slot 45, and the top of the roll-out board carrier 4 remains as a continuous plane, facilitating passing, placing of instruments or fixed-point delivery of unmanned aerial vehicles.

[0055] The auxiliary hoisting members 47 are arranged at both ends of the roll-out board carrier 4 in the length direction thereof, and are used for detachable fixed connection with the adjacent cross beam 201 of the same layer when the platform is unfolded. The auxiliary hoisting members 47 share the stepping force and tool concentrated load of the edges of the roll-out board carrier 4 in parallel with the roll-out support rod 3, and inhibit the deflection of the carrier in the direction of the roll-out support rod 3 and the torsion of the carrier around the axis of the roll-out support rod 3 through the direct tension connection with the adjacent cross beam 201; the arrangement at both ends makes the force on the left and right of the carrier more symmetrical, and the outer edge swing converges, while not occupying the upper envelope of the railing storage slot 45, so as to ensure that the folding rail 46 and the roll-out board carrier 4 do not interfere with each other in the unfolding and retracting paths, and facilitate quick unfolding and retraction.

[0056] The operation process of the embodiment can be summarized as "carrying to position - suspending in position - supporting and forming - platform unfolding - optional unfolding - enclosure layout - operation - reversing the sequence of retraction". Specifically, after carrying to the target layer position, the first carrier assembly 101 and the second carrier assembly 102 are positioned in the "barrel-shaped frame" according to the position of the cross beam 201 of the site, and the hoisting members 1 and the opposite cross beam 201 of the same layer are respectively established in detachable connection, and the length adjustment and locking form a preset height difference of the suspension reference; then the support rod 5 at the bottom of each main frame body is unfolded from the bottom storage cavity 51 to the outer swing position, and the lower cross beam 201 or inclined beam is established through detachable connecting members, so that the suspension and the support form a stable stress channel.

[0057] In the inner platform unfolding stage, the two bearing assemblies are pulled apart along the length of the cross beam 201, and the rigid telescopic platform 2 is sequentially flattened under the constraint of the two side guide edges. If necessary, the cover unfolding plate 22 is pushed out from the containing groove 21 and laid on the rigid telescopic platform 2 to obtain a continuous tread. If it is necessary to work close to the tower body side member, the outer platform is selectively unfolded: the outer extension strut 3 on the corresponding side is first extended and locked along the guide slide, and then the rolling plate carrier 4 is pushed out along the linear segment of the guide rail 421 and is transferred by the arc segment, the bottom sliding groove 44 of the carrier is sleeved into the two outer extension struts 3 and slides to the extended end, and is detachably locked with the locking part 31; the hanging connection of the auxiliary hanging part 47 with the cross beam 201 is established as needed. When lateral enclosure is needed, the folding railing 46 on the top of the rolling plate carrier 4 is turned up from the railing storage groove 45: the vertical rod body 461 is vertically set, the first transverse rod body 462 is butted against the opposite side, and the second transverse rod body 463 is connected with the cross beam 201 at the end, forming a three-sided enclosure and defining a safety boundary together with the surrounding cross beams 201. In the meantime, the relative distance between the inner platform and the outer platform can be refined by the length linkage or independent adjustment of the telescopic hanging part 1 and the telescopic support rod 5, and a necessary working gap is left between the inner platform and the tower 20 for the passage and swinging of tools, cables and fall arrest ropes.

[0058] The withdrawal is performed in reverse order: the connection between the folding railing 46 and the cross beam 201 is released and they are sequentially recovered into the railing storage groove 45; the auxiliary hanging part 47 is released, the rolling plate 43 is retracted and the carrier is unlocked, the carrier is slid back along the outer extension strut 3 and is guided back into the containing cavity 41 by the moving-out mechanism 42, the outer extension strut 3 is unlocked and is retracted along the guide slide; the cover unfolding plate 22 is stored in the upper layer of the containing groove 21, the two bearing assemblies are folded along the length of the cross beam 201, the rigid telescopic platform 2 is sequentially folded and fitted between the two main frame bodies; each support rod 5 is retracted into the bottom storage cavity 51, and the connection between the hanging part 1 and the cross beam 201 is released. Finally, the two main frame bodies are moved towards each other and are locked by the plug-in locking part 6 to form a folded state convenient for transportation, and are transferred to the next work point or complete the next tower. The above process steps are clear in action boundary, can be quickly reproduced in the "barrel-shaped frame" limited space, and are convenient for those skilled in the art to understand and implement according to the drawings.

[0059] The above are preferred embodiments of the present application, which do not limit the protection scope of the present application, therefore: any equivalent changes made on the structure, shape and principle of the present application shall be covered within the protection scope of the present application.

Claims

1. A tower fall-prevention maintenance platform, installed within the inner space enclosed by four crossbeams on the same level of the tower, characterized in that, include:   A first load-bearing component and a second load-bearing component are symmetrically arranged. The first load-bearing component and the second load-bearing component each include a main frame extending along a first direction, which is orthogonal to the length direction of the crossbeam.   The lifting members are disposed at opposite ends of each of the main frames. The lifting members are used to detachably and fixedly connect with two opposite crossbeams of the four crossbeams to suspend the first bearing component and the second bearing component in the inner space, and have a preset height difference relative to the crossbeams.   A rigid telescopic platform, wherein the two telescopic ends of the rigid telescopic platform are respectively connected to the sides of the two main frames facing each other; When the first load-bearing component and the second load-bearing component are separated and fixed in place along the length of the crossbeam, the rigid telescopic platform unfolds to form a horizontal support platform located below the inner side of the four crossbeams, and the four crossbeams form four-sided anti-fall guards around the horizontal support platform; when the first load-bearing component and the second load-bearing component approach each other, the rigid telescopic platform folds and closes between the two main frames.

2. The tower-mounted anti-fall maintenance platform according to claim 1, characterized in that, It also includes an outreach platform, which includes: Two outward support rods are arranged along the length of the main frame of the first bearing component and the second bearing component respectively and can slide relative to the main frame. They are embedded in the guide slide of the main frame, and their outer ends protrude through the gap between the auxiliary beams between adjacent crossbeams on the same layer of the tower in a direction perpendicular to the crossbeam and are locked in the outward position. A roll-up plate carrier is disposed in a receiving cavity on one side of the first bearing component and arranged along the length direction of the main frame. It is moved out of the receiving cavity by a removal mechanism disposed in the receiving cavity and rotated relative to the outward support rods to a laying position located above the two outward support rods and parallel to the crossbeam. At the laying position, the roll-up plate carried by the roll-up plate carrier is unfolded along its length direction and spans over the two outward support rods to form the support surface of the outward platform.

3. The tower fall-prevention maintenance platform according to claim 2, characterized in that,   The protruding end of the outward-extending support rod is provided with a locking part; The roll-up plate carrier is a long strip block with a sliding groove at its bottom corresponding to the two outward support rods. The sliding groove can be fitted onto the two outward support rods and slide along the length of the outward support rods. When the roll-up plate carrier slides to the locking part position, it is detachably locked to the locking part.

4. The tower anti-fall maintenance platform according to claim 3, characterized in that, The accommodating cavity is a through cavity with openings on both sides along the length of the main frame. The outward support rod can selectively extend along the guide slide to either side of the main frame and be locked, and each extended end of the outward support rod is provided with a locking part; The roll-up plate carrier can be selectively moved out of the receiving cavity to either side via the removal mechanism, and rotated relative to the two outward support rods on that side to the laying position, so that the roll-up plate straddles the two outward support rods on that side.

5. The tower fall-prevention maintenance platform according to claim 3, characterized in that, The top of the roll-up plate carrier is provided with two railing storage slots along its length. Each of the railing storage slots is fitted with a set of folding railings, the folding railings comprising: a vertical bar, the lower end of which is hinged to the top of the roll-up plate carrier via a folding member and limited to a vertical position by a limiting member; a first transverse bar and a second transverse bar, which are rotatably connected to the upper end of the vertical bar and can extend and retract along their respective length directions, and are perpendicular to the vertical bar in space; The first transverse bar extends in a direction parallel to the crossbeam and is detachably connected to the end of the first transverse bar of another set of folding railings. The second transverse bar extends in a direction perpendicular to the crossbeam and is detachably connected to the crossbeam through a connector provided at the end of the second transverse bar.

6. The tower fall-prevention maintenance platform according to claim 3, characterized in that, The roll-up plate carrier is equipped with auxiliary lifting components at both ends along its length. One end of each of the auxiliary lifting components is connected to the end of the corresponding roll-up plate carrier, and the other end is detachably and fixedly connected to the adjacent crossbeam on the same floor of the tower.

7. The tower-mounted anti-fall maintenance platform according to any one of claims 1 to 6, characterized in that, The rigid telescopic platform is composed of several rigid plates of equal width connected end to end. A first rotating shaft and a second rotating shaft are arranged in parallel between each pair of adjacent plates. The first rotating shaft and the second rotating shaft are respectively close to the upper edge and the lower edge of each plate to guide each plate to be arranged coplanarly in the unfolded position and stacked in the retracted position. The main frame of the second load-bearing component has a receiving groove extending along its length on the side facing the first load-bearing component. The receiving groove has two adjacent layers, with the lower layer used to accommodate the rigid telescopic platform. A cover plate is disposed on the upper layer of the receiving groove along the length direction; In the unfolded position, the cover plate can be unfolded from the upper layer of the receiving groove along the length of the main frame and laid on the rigid telescopic platform; in the retracted position, both the rigid telescopic platform and the cover plate are housed in the receiving groove.

8. The tower-mounted anti-fall maintenance platform according to any one of claims 2 to 6, characterized in that, Each of the main frames has a bottom storage cavity along its length. There are four support rods, which are rotatably connected to the bottom of the two main frames through folding parts. Each main frame has two support rods. The two support rods are set in the bottom storage cavity and can be folded and moved between the bottom storage cavity and the outward swing position. The folding directions of the two support rods on the same main frame are opposite. In the outward swing position, the free ends of each of the support rods face the opposite sides of the main frame and are fixedly connected to the tower beams or inclined beams located below the horizontal support platform via detachable connectors.

9. The tower-mounted anti-fall maintenance platform according to claim 8, characterized in that, The lifting member is a telescopic lifting member, equipped with a length adjustment locking member, which can be locked at any position within its telescopic stroke; The support rod is a telescopic support rod, equipped with a length adjustment locking device, which can be locked at any position within its telescopic stroke; In the deployed position, the effective length of each of the telescopic lifting components and each of the telescopic support rods can be adjusted independently or in conjunction, so that the relative distance between the rigid telescopic platform and the outward platform is adjustable, and an operating gap is left between the rigid telescopic platform and the tower.

10. The tower fall-prevention maintenance platform according to claim 7, characterized in that, The main frame of the first bearing component is provided with an auxiliary groove body opposite to the receiving groove, the depth of the auxiliary groove body being less than that of the receiving groove; in the retracted state where the first bearing component and the second bearing component are close together, the receiving groove and the auxiliary groove body are connected to each other and together form a receiving space for accommodating the rigid telescopic platform and the cover plate; at the connected ends, the opposite groove sidewalls of the receiving groove and the auxiliary groove body are provided with plug-in locking members, the plug-in locking members being used to detachably lock the two connected main frames bodies when the rigid telescopic platform is in the retracted state.

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