Lifting type scaffold

Abstract

The utility model discloses a lifting type scaffold which comprises a frame, a lifting driving mechanism, an operation platform, a ladder and a moving wheel set, and the frame is a three-dimensional supporting frame formed by welding metal pipes. The lifting driving mechanisms are symmetrically arranged in stand columns on the two sides of the frame and comprise bevel gear lead screw lifters, linkage synchronizing shafts and power input mechanisms. The operating platform is slidably connected with the frame through a lifting driving mechanism, foldable guardrails are arranged on the periphery of the platform, a plurality of transverse reinforcing beams are arranged at the bottom of the platform, and hinged transparent baffles are arranged on the edges of the platform. Therefore, the linkage synchronous shaft is matched with the bevel gear lead screw elevator, synchronous movement of the lifting shafts on the two sides is achieved, the elevator has a self-locking function, the platform is prevented from sliding off during operation, the positioning universal wheels are combined with the extensible supporting legs, the supporting legs are folded during movement, four-point supporting is formed during operation, and stability is improved. The foldable guardrails, the rotary storage ladder and the hinged baffles greatly reduce the equipment transportation size, and the space utilization rate is increased.

Description

Technical Field

[0001] This utility model relates to the technical field of construction equipment, and in particular to a lifting scaffold. Background Technology

[0002] Scaffolding is a commonly used piece of equipment for working at heights in fields such as construction and decoration. Traditional scaffolding has the following technical drawbacks:

[0003] 1. Insufficient lifting synchronization: Most adopt a single-side drive or independent lifting structure, which can easily cause the operating platform to tilt, posing a safety hazard;

[0004] 2. Inconvenient switching between movement and support: Fixed support structures occupy a lot of space, requiring manual handling when moving, or the moving wheel set lacks a stable support design, making it prone to shaking during operation;

[0005] 3. Poor storage convenience: Ladders, guardrails and other components are mostly fixed, and need to be disassembled for storage, which is cumbersome and takes up transportation space;

[0006] Therefore, there is an urgent need for a scaffolding structure that combines synchronous lifting, modular storage, multi-mode drive, and excellent stability. Utility Model Content

[0007] This utility model aims to at least partially solve one of the technical problems in the related art.

[0008] Therefore, the purpose of this utility model is to propose a lifting scaffold, which uses a linkage synchronous shaft in conjunction with a bevel gear screw jack to achieve synchronous movement of the lifting shafts on both sides. The jack also has a self-locking function to prevent the platform from slipping during operation. The positioning casters are combined with the deployable support legs, which can be retracted when moving and unfolded during operation to form four-point support, improving stability. The foldable guardrails, rotating ladders, and hinged baffles significantly reduce the transport volume of the equipment and improve space utilization.

[0009] To achieve the above objectives, this utility model proposes a lifting scaffold comprising a frame, a lifting drive mechanism, an operating platform, a ladder, and a set of movable wheels. The frame is a three-dimensional support frame constructed from welded metal tubing. The lifting drive mechanism is symmetrically arranged within the columns on both sides of the frame and includes a bevel gear screw jack, a synchronous shaft, and a power input mechanism. The operating platform is slidably connected to the frame via the lifting drive mechanism, and is equipped with foldable guardrails around its perimeter, multiple transverse reinforcing beams at the bottom, and hinged transparent baffles at the edges. The ladder is hinged to the side of the frame, with a storage groove at the bottom and a rotating lifting slider mechanism at the top. The set of movable wheels includes four omnidirectional casters and extendable support legs. The four omnidirectional casters are fixedly located at the four corners of the bottom of the frame, and the extendable support legs are hinged to the lower end of the frame via independent pivots. When extended, they contact the ground; when retracted, they are offset from the omnidirectional casters.

[0010] This utility model is a lifting scaffold. The linkage synchronous shaft is combined with the bevel gear screw jack to realize the synchronous movement of the lifting shafts on both sides. The jack has a self-locking function to prevent the platform from slipping during operation. The positioning casters are combined with the deployable support legs. The support legs are retracted when moving and unfolded to form four-point support during operation, which improves stability. The foldable guardrails, rotating ladder and hinged baffles greatly reduce the transportation volume of the equipment and improve space utilization.

[0011] In addition, the above-mentioned lifting scaffolding proposed in the application may also have the following additional technical features:

[0012] Specifically, the bevel gear screw jack is vertically installed inside the columns on both sides of the frame, and a lifting shaft is fixedly connected inside. When the bevel gear screw jack rotates, it drives the lifting shaft to slide up and down. The linkage synchronous shaft runs horizontally through the middle of the frame, and its two ends are respectively engaged with the transmission gear of the bevel gear screw jack. The power input mechanism is symmetrically arranged on the outer output ends of the two bevel gear screw jacks, including a manual crank and a power tool interface.

[0013] Specifically, the transverse reinforcing beams of the operating platform are welded and fixed with a cross-grid structure, the foldable guardrail is composed of multiple hinged rods, which can be folded down to be flush with the platform, and the transparent baffle is hinged to the edge of the platform and can be rotated upward to open, opening upward at a 45° angle.

[0014] Specifically, the storage groove is located in the slot of the bottom crossbeam of the frame; the rotating lifting slider mechanism includes a guide rail and a slider, the guide rail being vertically fixed to the side of the frame; one end of the slider is slidably mounted on the guide rail, and the other end is hinged to the top end of the ladder, so that the ladder can be rotated to be stored in the storage groove.

[0015] Specifically, the deployable support leg includes four sets of rotating support frames and anti-slip support pads. The four sets of rotating support frames are hinged to the four corners of the lower end of the frame via pivots. The anti-slip support pads are connected to the ends of the four sets of rotating support frames via a foot-operated pressing mechanism.

[0016] The advantages of this invention compared to existing technologies are as follows:

[0017] (1) The linkage synchronous shaft is used in conjunction with the bevel gear screw jack to realize the synchronous movement of the lifting shafts on both sides. The jack also has a self-locking function to prevent the platform from slipping during operation.

[0018] (2) The positioning casters are combined with the deployable support legs. The support legs are retracted when moving and deployed to form four-point support when working, which improves stability.

[0019] (3) Foldable guardrails, rotating storage ladders and hinged baffles greatly reduce the transportation volume of equipment and improve space utilization.

[0020] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0021] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the following description of the embodiments taken in conjunction with the accompanying drawings, in which:

[0022] Figure 1 This is a perspective view of a lifting scaffold according to one embodiment of the present utility model;

[0023] Figure 2 This is a perspective view of a lifting scaffold according to another embodiment of the present invention;

[0024] Figure 3 This is a partial structural schematic diagram of a lifting scaffold according to an embodiment of the present invention;

[0025] Figure 4 This is a perspective view of a lifting scaffold according to one embodiment of the present invention.

[0026] As shown in the figure: 1. Frame; 2. Lifting drive mechanism; 3. Operating platform; 4. Ladder; 5. Casters.

[0027] 21. Bevel gear screw jack; 22. Synchronous shaft; 23. Power input mechanism; 24. Lifting shaft;

[0028] 31. Foldable guardrail; 32. Horizontal reinforcing beam; 33. Transparent baffle;

[0029] 41. Storage groove; 42. Rotary lifting slider mechanism; 421. Guide rail; 422. Slider;

[0030] 51. Positioning casters; 52. Deployable support legs; 521. Rotating support frame; 522. Anti-slip support pad. Detailed Implementation

[0031] The embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention. Rather, the embodiments of the present invention include all variations, modifications, and equivalents falling within the spirit and scope of the appended claims.

[0032] The following description, in conjunction with the accompanying drawings, describes a lifting scaffold according to an embodiment of the present invention.

[0033] like Figures 1 - 4 As shown in the figure, a lifting scaffold according to an embodiment of the present invention includes a frame 1, a lifting drive mechanism 2, an operating platform 3, a ladder 4, and a set of moving wheels 5.

[0034] It can be understood that frame 1 is a three-dimensional support frame constructed from welded metal tubing, employing a rectangular three-dimensional structure, with horizontal and vertical bars welded together to form a stable support system. Installation space is reserved inside the two side columns for fixing the lifting drive mechanism 2; mounting seats for the universal casters 51 are welded at the four corners of the bottom, and hinged axle seats for the deployable support legs 52 are provided at the lower edge to ensure the mechanical connection strength between the moving wheel assembly 5 and frame 1.

[0035] Workflow of Moving Wheel Set 5

[0036] 1. Movement Status:

[0037] Four omnidirectional casters 51 are fixed to the four corners of the bottom of the frame 1 and can be locked or unlocked by a brake device built into the casters. When it is necessary to move the equipment, ensure that the deployable support legs 52 are in the retracted state (i.e., rotate upwards around the independent pivot and fit against the side of the frame 1). At this time, the support legs 52 and the omnidirectional casters 51 are vertically offset to avoid interference. Pushing the frame 1 allows the omnidirectional casters 51 to rotate 360° for flexible movement.

[0038] 2. Stable support status:

[0039] After reaching the work position, lock the caster wheel 51 and rotate the deployable support leg 52 downwards by 90° around the independent pivot, so that the support pad at the end of the support leg is in full contact with the ground.

[0040] Operation process of lifting drive mechanism 2

[0041] The lifting drive mechanism 2 is symmetrically arranged inside the columns on both sides of the frame 1, and its core function is to drive the operating platform 3 to lift vertically.

[0042] 1. Power input:

[0043] The operator drives the lifting system via power input mechanism 23. There are two power input methods:

[0044] Manual mode: Insert the manual crank into the interface of the power input mechanism 23 and crank it clockwise or counterclockwise to drive the bevel gear screw jack 21 to rotate through gear transmission;

[0045] Electric mode: Use a power tool (pistol drill) to connect to the electric interface of the power input mechanism 23, and drive the bevel gear screw jack 21 through the motor.

[0046] 2. Synchronous lifting and lowering is achieved:

[0047] When the bevel gear screw jack 21 rotates, the internal screw and nut pair converts the rotational motion into the linear motion of the lifting shaft. The bevel gear screw jacks 21 in the two side columns achieve mechanical linkage through the linkage synchronous shaft 22. The linkage synchronous shaft 22 runs horizontally through the middle of the frame 1, and its two ends mesh with the transmission gears of the two side jacks respectively, ensuring that the left and right side jacks rotate synchronously and preventing the operating platform 3 from tilting when it is raised or lowered.

[0048] 3. Lifting stop and locking:

[0049] When the operating platform 3 is raised to or lowered to the target height, power input is stopped, and the mechanical self-locking function (worm gear self-locking) of the bevel gear screw jack 21 is automatically locked to prevent the platform from sliding due to gravity or external force, thus ensuring operational safety.

[0050] Use and adjustment of operating platform 3

[0051] The operating platform 3 is connected to the column of the frame 1 via a slider-guide rail structure, and moves up and down with the lifting drive mechanism 2.

[0052] 1. Safety protection components:

[0053] Foldable guardrail 31: The foldable guardrail 31 around the platform is composed of multiple hinged rods. Before operation, the guardrail is unfolded upwards and locked (secured by pins) to form a protective fence with a height of not less than 1.2 meters; after operation, the guardrail is folded downwards to be flush with the platform for easy storage and transportation.

[0054] Transparent baffle 33: Connected to the platform frame via a hinge shaft, it has the ability to rotate upwards and open by 45°. In actual working scenarios, the baffle is normally kept open, increasing the platform area and preventing tools from falling from above during operations. Its core function is to build a safety barrier—the baffle body, made of acrylic material, can effectively prevent construction tools and other items from accidentally falling from the edge of the platform, providing reliable anti-fall protection for the workshop working environment.

[0055] 2. Structural reinforcement:

[0056] The multiple transverse reinforcing beams 32 at the bottom of the platform are welded with a cross-grid structure to form a rigid whole with the bottom surface of the platform, effectively dispersing the working load and improving the platform's resistance to deformation.

[0057] Ladder 4's unfolding and storage process

[0058] Ladder 4 is hinged to the side of frame 1, supporting multi-angle use and compact storage.

[0059] 1. Unfold and use:

[0060] Starting from the stowed position, the operator grasps the middle of ladder 4 and lifts it upwards so that its bottom disengages from the stowage groove 41 on the bottom crossbeam of frame 1. Simultaneously, the operator pushes the rotating lifting slider mechanism 42 at the top of the ladder. The slider 422 slides upwards along the guide rail 421, which is vertically fixed to the side of frame 1. At the same time, ladder 4 rotates outwards around the bottom hinge, forming an inclined passage at a 30°-60° angle to the side of frame 1, allowing the operator to climb to the operating platform 3. Once the target height is reached, the ladder position is secured by the locking device (bolt fixing) between slider 422 and guide rail 421.

[0061] 2. Storage and repositioning:

[0062] After the work is completed, unlock slider 422, slide the slider down to lower the top of ladder 4, and at the same time rotate the ladder towards the side of frame 1 until the bottom of the ladder aligns with and is embedded in the storage groove 41 of the bottom crossbeam of frame 1. At this time, ladder 4 fits against the side of frame 1, the overall structure is compact, and it is easy to transport or store.

[0063] It should be further explained that the bevel gear screw jack 21 is a mature mechanical component in the existing technology and adopts the DFL series bevel gear jack model. It is mainly composed of bevel gear pairs, screw, nut, housing and transmission gear, etc., and converts the rotary motion into the linear motion of the screw through bevel gear transmission. In this case, the component has the following functional characteristics: (1) It can realize the synchronous lifting motion of the two lifting shafts, and ensure the smooth lifting of the operating platform 3 through the mechanical linkage of the linkage synchronous shaft 22; (2) It has a built-in mechanical self-locking function (worm gear self-locking structure), which automatically locks when the lifting stops to prevent the platform from sliding and improve the safety of operation; (3) It supports multiple power input methods such as manual or electric, and adapts to the diversified drive requirements of the power input mechanism 23; (4) It has the advantages of high efficiency, compact structure, low noise and long service life, and meets the working conditions of frequent lifting of scaffolding.

[0064] Since the internal structure and working principle of the bevel gear screw jack 21 are known prior art to those skilled in the art, and as an independent standardized component, it mainly reflects its cooperation with the linkage synchronous shaft 22 and the power input mechanism 23 in the patented technical solution, the specification does not provide additional labels or detailed descriptions of its internal sub-structures, but only summarizes its functional positioning in the lifting drive mechanism 2 with the overall component label 21.

[0065] In one embodiment of this utility model, such as Figures 1 - 4 As shown, the lifting drive mechanism 2, as the core component, enables the stable lifting function of the operating platform 3. The following will elaborate on the working process and synergistic effect of the bevel gear screw jack 21, the linkage synchronous shaft 22, and the power input mechanism 23:

[0066] As can be understood, the bevel gear screw jack 21 is vertically installed inside the columns on both sides of the frame 1. Its core components are the screw and nut pair and the bevel gear transmission system. The screw is fixedly connected to the lifting shaft 24. When power is input, the motor or manual crank drives the bevel gear to rotate, which in turn drives the screw to rotate. According to the mechanical principle of the screw and nut, the rotational motion of the screw is converted into the linear up-and-down sliding of the lifting shaft 24, thereby realizing the vertical lifting action of the operating platform 3 connected to the lifting shaft. The bevel gear screw jack 21 has a self-locking function. When the power input stops, the screw and nut pair can automatically lock to prevent the lifting shaft 24 from accidentally sliding due to gravity or external forces, ensuring that the operating platform 3 remains stable at any height.

[0067] The linkage synchronization shaft 22 extends laterally through the middle of the frame 1, with its two ends tightly meshing with the transmission gears of the bevel gear screw jacks 21 on both sides. This structural design ensures that the bevel gear screw jacks 21 on both sides can operate synchronously. When one bevel gear screw jack 21 starts to rotate under power, the other bevel gear screw jack 21 will rotate at the same speed and direction through the transmission of the linkage synchronization shaft 22. This synchronization mechanism effectively avoids tilting or imbalance of the operating platform 3 during lifting, ensuring the safety of the operator and the stability of the equipment.

[0068] The power input mechanism 23 is symmetrically arranged at the outer output ends of the bevel gear screw jacks 21 on both sides, providing the power source for the entire lifting system. This mechanism offers two power input methods to meet different working scenarios and user needs:

[0069] 1. Manual crank operation: In situations where power supply is inconvenient or the lifting speed requirement is not high, operators can use a manual crank.

[0070] 2. Power tool interface operation: To improve work efficiency, the power input mechanism 23 is also equipped with a power tool interface. Operators can use common power tools, such as pistol drills, and connect them to the interface.

[0071] Workflow:

[0072] In actual operation, these three components work closely together. When it is necessary to raise or lower the operating platform 3, the operator first selects the appropriate power input method based on the actual situation. If manual operation is selected, the manual crank is inserted into the power input mechanism 23, and then the crank is rotated evenly to make the bevel gear screw jacks 21 on both sides rotate synchronously, driving the lifting shaft 24 to slide up or down, and the operating platform 3 is raised or lowered smoothly. During this process, the linkage synchronous shaft 22 ensures the synchronization of the two lifting machines and prevents the platform from tilting. If electric operation is selected, the power tool is connected to the interface of the power input mechanism 23. After starting the power tool, the bevel gear screw jacks 21 on both sides are driven synchronously to drive the lifting shaft 24 through the action of the linkage synchronous shaft 22, realizing the rapid and smooth raising and lowering of the operating platform 3. Regardless of which power input method is used, the self-locking function of the bevel gear screw jack 21 ensures that the operating platform 3 remains in a fixed position after the raising and lowering stops, ensuring operational safety.

[0073] In one embodiment of this utility model, such as Figures 1 - 4 As shown, this section will elaborate on the structural features and workflow of each component of the operating platform 3, namely the transverse reinforcing beam 32, the foldable guardrail 31, and the transparent baffle 33.

[0074] It is understood that the transverse reinforcing beams 32 are welded and fixed using a cross-grid structure, forming a robust grid-like frame. This structure can effectively distribute the load on the platform, enhancing the overall strength and stability of the platform.

[0075] In practical use, when operators perform various tasks on the platform, the resulting weight and external forces are transferred to the transverse reinforcing beams 32 through the platform surface. These loads are evenly distributed across the entire beam structure, avoiding the problem of localized stress concentration. This not only improves the platform's load-bearing capacity but also extends its service life.

[0076] Furthermore, the transverse reinforcing beam 32 is firmly connected to the platform bottom surface by welding, forming a single integral structure. This welding method ensures a rigid connection between the reinforcing beam and the platform, further enhancing the platform's stability. When subjected to large loads or external impacts, the platform and reinforcing beam can work together to resist deformation and damage.

[0077] The foldable guardrail 31 is composed of multiple hinged rods, a design that gives the guardrail a high degree of flexibility and convenience. Each rod is connected by hinge points, allowing the rods to rotate freely within a certain range.

[0078] When using the operating platform 3, operators can activate the guardrail protection function by unfolding it upwards. The specific operation procedure is as follows: rotate each hinged member upwards around the hinge point until the guardrail is vertically perpendicular to the platform. The unfolded guardrail 31 forms a continuous protective barrier around the platform, effectively preventing workers from accidentally falling from the edge and providing core safety assurance for high-altitude or edge-prone operations. When work is completed or the platform needs to be transported, the reverse operation is performed—rotate each member downwards around the hinge point and fold it, so that the guardrail completely fits the platform surface. This design significantly reduces the space occupied when the equipment is idle, and significantly improves transportation convenience and storage efficiency.

[0079] 33 Functional Designs of Transparent Acrylic Baffle:

[0080] The baffle 33 is mounted on the platform edge via a hinge shaft and is specifically designed for high-cleanliness environments such as semiconductor cleanrooms. During operation, the operator can rotate the baffle upwards to a fixed 45° angle around the hinge shaft. This angle provides sufficient space for hand operation while creating a sloping protective surface, effectively preventing screwdrivers, washers, and other tools and small parts from sliding off the platform edge onto the workshop floor, strictly adhering to the stringent standards for foreign object control in cleanroom environments. When not in operation, the baffle can be rotated downwards to a closed position flush with the platform edge, preventing exposed collision damage and maintaining a flat platform appearance, thus balancing protective performance and equipment integrity. This design, through a combination of angle control and material properties, achieves a dual optimization of operational convenience and cleanroom protection.

[0081] In one embodiment of this utility model, such as Figures 1 - 4 As shown, the following details the structural cooperation and working process of the storage groove 41 and the rotating lifting slider mechanism 42 for the storage and unfolding functions of ladder 4:

[0082] It is understood that the storage groove 41 is a rectangular slot opened on the bottom crossbeam of the frame 1, the size of which matches the cross-sectional shape of the bottom of the ladder 4. A rubber buffer pad is installed on the inner wall of the slot to secure the ladder 4 and reduce vibration. When the ladder 4 is in the stored state, its bottom is embedded in the slot, and is stably fixed by mechanical limiting, preventing shaking during transportation.

[0083] The rotary lifting slider mechanism 42 consists of a guide rail 421 vertically fixed to the side of the frame 1 and a sliding slider 422.

[0084] Guide rail 421: Vertically fixed to the side column of frame 1, the length of the guide rail covers the maximum height range of ladder 4 when it is unfolded;

[0085] Slider 422: One end is connected to the guide rail 421 via a sliding groove, and the other end is fixedly connected to the top crossbar of the ladder 4 via a hinge shaft, allowing the ladder 4 to rotate ±90° around the hinge point.

[0086] Ladder 4 unfolding process

[0087] 1. Unlock initial state:

[0088] In its stowed state, the bottom of the ladder 4 is embedded in the storage groove 41, the top slider 422 is located at the bottom of the guide rail 421, and the ladder 4 is flush with the side of the frame 1. The operator holds the middle handle of the ladder 4 and pulls it upward to disengage the bottom of the ladder from the slot in the storage groove 41.

[0089] 2. Height adjustment and angle unfolding:

[0090] With one hand, push the slider 422 to slide upward along the guide rail 421, and with the other hand, rotate the ladder 4 outward simultaneously to make the ladder and the side of the frame 1 form an inclination angle of 30°-60° (the specific angle is adjusted according to the working height requirements);

[0091] After the ladder 4 is rotated to a position perpendicular to or tilted to the ground via the hinge axis, the bottom support feet contact the ground, forming a stable climbing path.

[0092] Ladder 4 storage process

[0093] 1. Rotating folding and embedded storage:

[0094] Hold the top of ladder 4 and rotate the ladder toward the side of frame 1, so that it gradually comes into contact with the side of the frame from the tilted position;

[0095] When the bottom of ladder 4 is aligned with the storage groove 41 of the bottom crossbeam of frame 1, gently press the top of ladder so that the bottom is fully embedded in the groove.

[0096] After storage, the ladder 4 is flush with the side of the frame 1, and the slider 422 is fixed by the locking structure at the bottom of the guide rail to ensure that there is no shaking during transportation.

[0097] In one embodiment of this utility model, such as Figures 1 - 4 As shown, the following details the structure, function, and workflow of the rotating support frame 521 and the anti-slip support pad 522 for the deployable support leg 52 of the movable wheel assembly 5:

[0098] It is understood that the four sets of rotating support frames 521 are respectively hinged to the preset bearings at the four corners of the lower end of the frame 1 via rotating shafts. The rotating shafts adopt a metal pin structure to ensure that the support frame can rotate flexibly around the shaft from 0° to 90° (0° is the folded state, and 90° is the unfolded state).

[0099] The rotating support frame 521 rotates and fits against the side of the frame 1, offset vertically from the positioning caster 51 (close to the inside of the frame column) to avoid interference with the movement path of the caster. At this time, the scaffolding only contacts the ground through the positioning caster 51, making it easy to push and move.

[0100] The unfolding, locking, and storage process of support leg 52

[0101] 1. Deployment and stabilization support:

[0102] The operator sequentially rotates the four sets of rotating support frames 521 downwards until they are perpendicular to the ground, forming a "T-shaped" support structure with the lower end of the frame 1. At this point, by stepping on the pressing plate next to the anti-slip support pad 522, the built-in linkage mechanism is triggered, causing the anti-slip support pad 522 to extend downwards by a preset stroke, with its bottom surface contacting the ground and its height exceeding the lowest point of the positioning caster wheel 51, thus stabilizing the entire device on the ground. At this point, the scaffolding forms eight points of contact through "four positioning caster wheels 51 + four deployable support legs 52", significantly improving its anti-overturning ability.

[0103] Storage and repositioning:

[0104] After the operation is completed, step on the pressing plate next to the anti-slip support pad 522 again. The linkage mechanism drives the anti-slip support pad 522 to retract to the initial position, so that the positioning caster 51 contacts the ground again. Then rotate the rotating support frame 521 upwards until it fits against the side of the frame 1.

[0105] It should be further explained that the foot-operated pressing plate and linkage mechanism are mature mechanical structures in existing technology (the foot-operated lifting mechanism, model JL-003). It mainly consists of a pressing plate, a transmission linkage, a return spring, and a guide rail. When the operator steps on the pressing plate, the force is transmitted to the lifting component of the anti-slip support pad 522 through the linkage, driving the support pad to extend downwards. After releasing the pressing plate, the return spring automatically resets the linkage mechanism, and the support pad retracts. This structure features convenient operation and rapid response, allowing for quick switching between support and movement states with one hand or one foot.

[0106] Since the internal structure of the foot-operated linkage mechanism is known to those skilled in the art, and it is only used in this patent as a driving method for the anti-slip support pad 522 to cooperate with the rotating support frame 521, the specification does not provide additional labels or detailed descriptions of its internal sub-structures, but only describes its linkage relationship with the support leg 52 in a functional summary manner.

[0107] Specifically, taking exterior wall painting as an example, operators should use this lifting scaffolding according to the following procedures:

[0108] 1. Move the equipment to the work position:

[0109] Once it is confirmed that the deployable support leg 52 is in the retracted state (rotating support frame 521 is in contact with the side of frame 1), the brake device of the positioning caster 51 is unlocked, and the frame 1 is pushed to move to the target position through the 360° turning function of the caster 51.

[0110] 2. Deploy the support leg 52 fixing device:

[0111] The four sets of rotating support frames 521 are rotated downwards by 90° until they are perpendicular to the ground, forming a "T-shaped" support structure. By stepping on the pressing plate next to the anti-slip support pad 522, the linkage mechanism is triggered to extend the anti-slip support pad 522 downwards until its bottom surface contacts the ground and its height is higher than the caster wheel 51, thus stably supporting the equipment on the ground.

[0112] 3. Lift the operating platform to the working height:

[0113] Manual mode: Insert the manual crank into the power input mechanism 23 and crank it clockwise to drive the bevel gear screw jack 21 to rotate. This drives the lifting shafts on both sides to rise synchronously through the linkage synchronous shaft 22, and the operating platform 3 slides with the lifting shaft 24.

[0114] Electric mode: Use the electric interface of the power input mechanism 23 connected to the pistol drill to quickly raise the platform to the target height after starting.

[0115] Once the height is reached, the bevel gear screw jack 21 automatically locks itself, fixing the operating platform 3.

[0116] 4. Deploy the ladder and install safety measures:

[0117] Hold the middle of the ladder 4 and pull it upwards so that its bottom is disengaged from the storage groove 41 of the bottom crossbeam of the frame 1. At the same time, push the slider 422 to slide upwards along the guide rail 421 and rotate the ladder 4 outwards to form a 45° angle with the side of the frame 1. Fix the position of the ladder by the locking device of the slider 422 and the guide rail 421 to form a climbing passage.

[0118] The foldable guardrail 31 can be unfolded and locked with a pin to form a 1.2-meter-high protective fence; the transparent baffle 33 to 45° can be rotated upward to effectively prevent construction tools and other items from accidentally falling from the edge of the platform, providing reliable fall protection for the workshop working environment.

[0119] 5. Work completion and equipment storage:

[0120] Close the transparent baffle 33 and fold the foldable guardrail 31 down until it is flush with the platform.

[0121] Unlock the slider 422 of ladder 4, slide it down and rotate the ladder to the side of frame 1 so that its bottom is embedded in the storage groove 41 and fits the side of the frame;

[0122] Step on the anti-slip support pad 522 to press the plate, retract the support pad and unlock the rotating support frame 521, then rotate it upwards to the storage state;

[0123] Lock and position the caster wheel 51 to move the device to the storage area.

[0124] In summary, this utility model embodiment of a lifting scaffold uses a linkage synchronous shaft in conjunction with a bevel gear screw lifting mechanism to achieve synchronous movement of the lifting shafts on both sides. The lifting mechanism also has a self-locking function to prevent the platform from slipping during operation. The positioning casters are combined with deployable support legs, which can be retracted when moving and unfolded during operation to form four-point support, improving stability. The foldable guardrails, rotating ladder, and hinged baffles significantly reduce the transport volume of the equipment and improve space utilization.

[0125] In the description of this specification, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0126] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0127] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A lifting scaffold, characterized in that, It includes a frame (1), a lifting drive mechanism (2), an operating platform (3), a ladder (4), and a set of wheels (5), wherein, The frame (1) is a three-dimensional support frame made of welded metal pipes; The lifting drive mechanism (2) is symmetrically arranged in the columns on both sides of the frame (1), and includes a bevel gear screw jack (21), a linkage synchronous shaft (22) and a power input mechanism (23); The operating platform (3) is slidably connected to the frame (1) through the lifting drive mechanism (2). The platform is surrounded by foldable guardrails (31), and has multiple horizontal reinforcing beams (32) at the bottom. The edges are equipped with hinged transparent baffles (33). The ladder (4) is hinged to the side of the frame (1) by a hinge. The bottom of the ladder is provided with a storage groove (41) and the top is provided with a rotating lifting slider mechanism (42). The movable wheel set (5) includes four positioning casters (51) and an expandable support leg (52). The four positioning casters (51) are fixedly installed at the four corners of the bottom of the frame (1). The expandable support leg (52) is hinged to the lower end of the frame (1) through an independent pivot. When expanded, it contacts the ground and when stored, it is offset from the position of the casters (51).

2. The lifting scaffolding according to claim 1, characterized in that, The bevel gear screw jack (21) is vertically installed inside the columns on both sides of the frame (1), and a lifting shaft (24) is fixedly connected inside. When the bevel gear screw jack (21) rotates, it drives the lifting shaft (24) to slide up and down. The linkage synchronous shaft (22) runs horizontally through the middle of the frame (1), and its two ends mesh with the transmission gears of the bevel gear screw jack (21); The power input mechanism (23) is symmetrically arranged on the outer output end of the bevel gear screw jack (21) on both sides, including a manual crank and an electric tool interface.

3. The lifting scaffolding according to claim 1, characterized in that, The transverse reinforcing beam (32) of the operating platform (3) is welded and fixed with a cross grid structure. The foldable guardrail (31) is composed of multiple hinged rods and can be folded down to be flush with the platform. The transparent baffle (33) is hinged to the edge of the platform and can be rotated upward to open. It can be opened upward at a 45° angle.

4. A lifting scaffolding according to claim 1, characterized in that, The storage groove (41) is located in the slot of the bottom crossbeam of the frame (1); The rotary lifting slider mechanism (42) includes a guide rail (421) and a slider (422), wherein the guide rail (421) is vertically fixed to the side of the frame (1); One end of the slider (422) is slidably mounted on the guide rail (421), and the other end is hinged to the top end of the ladder (4). By rotating the ladder (4), it can be stored in the storage groove (41).

5. A lifting scaffolding according to claim 1, characterized in that, The deployable support leg (52) includes four sets of rotating support frames (521) and anti-slip support pads (522), wherein, The four sets of rotating support frames (521) are hinged to the four corners of the lower end of the frame (1) via rotating shafts; The anti-slip support pad (522) is connected to the ends of the four sets of rotating support frames (521) via a foot-operated pressing mechanism.

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