A foldable construction scaffold

Abstract

This utility model belongs to the field of scaffolding technology, specifically relating to a foldable construction scaffold. It includes casters, retractable uprights, a lifting device, a ladder, and footboards. The lifting device is mounted on the retractable uprights, and includes a folding bracket, a drive cylinder, and a mounting plate. The mounting plate is fixed to the retractable uprights, and the folding bracket is mounted on the mounting plate. A drive cylinder and a limit rod are mounted at the bottom of the folding bracket. The telescopic end of the drive cylinder is connected to the limit rod, which is slidably mounted in a limit frame on the mounting plate. A footboard is connected to the top of the folding bracket, and a ladder is mounted on one side of the footboard. This utility model uses the drive cylinder to move the limit rod along the limit frame, causing the folding bracket to unfold or fold, thereby moving the retractable uprights and footboards along the direction of the retractable uprights, changing the height of the scaffold, and facilitating adjustment of the construction height as needed.

Description

Technical Field

[0001] This utility model belongs to the field of scaffolding technology, specifically relating to a foldable scaffolding for building construction. Background Technology

[0002] Scaffolding is a commonly used piece of equipment for working at heights in construction, equipment maintenance, and other fields. Its height adjustment flexibility directly affects construction efficiency and safety. Traditional scaffolding often uses fixed column structures or manually assembled sections, which has the following significant drawbacks:

[0003] First, the height change needs to be achieved by adding or removing standard sections or disassembling and reassembling, which is cumbersome and time-consuming, and difficult to adapt to the needs of frequent adjustments.

[0004] Secondly, adding structural components to enhance stability often leads to an increase in overall weight, insufficient folding and storage space, and high transportation and storage costs.

[0005] Third, most scaffolding only supports overall lifting and cannot take into account the independent height adjustment of local steps, and lacks a synchronous locking mechanism during the lifting and lowering process, which can easily lead to the risk of overturning.

[0006] Chinese Patent CN201605792U discloses a folding lifting scaffold, including left and right supports and a platform. Each support has at least two vertically adjustable straight rods. A locking mechanism is provided between adjacent vertical rods in each support. Connecting struts connect the pairs of vertical rods on the left and right sides. Each connecting strut includes a left strut pivotally connected to the left vertical rod, a right strut pivotally connected to the right vertical rod, and a folding joint connecting the left and right struts. The above-mentioned scaffold uses a hand-cranked winch to drive a cable system to control the lifting of the vertical rods. This requires manual repeated cranking of the winch and locking of the V-shaped locking plates layer by layer, which is cumbersome and time-consuming. Therefore, there is an urgent need for those skilled in the art to solve the above-mentioned technical problems. Utility Model Content

[0007] This invention addresses the problem in the prior art where a hand-cranked winch is used to drive a wire-operated system to control the lifting and lowering of the straight rod frame. This requires manual repeated cranking of the winch and locking of the V-shaped locking plates layer by layer, which is cumbersome and time-consuming.

[0008] The technical solution adopted by this utility model is:

[0009] A foldable scaffold for building construction includes casters, retractable columns, a lifting device, a ladder, and treads;

[0010] The retractable column is fixedly installed with the casters at its bottom and fixedly connected to the escalator at its top;

[0011] The lifting device includes a folding bracket, a drive cylinder, a mounting plate, a limit rod, and a limit frame;

[0012] The mounting plate is fixedly connected between the four retractable columns;

[0013] The bottom end of the folding bracket is hinged to the mounting plate, and the top end is hinged to the pedal.

[0014] The cylinder body of the driving hydraulic cylinder is fixed to the mounting plate, and the telescopic end of the driving hydraulic cylinder is connected to the limiting rod;

[0015] Two limiting frames are provided in total. The two ends of the limiting rod are slidably installed in the limiting frame. The folding bracket is fitted on the limiting rod. The limiting frames are respectively fixed to the top two sides of the mounting plate.

[0016] When the drive cylinder extends or retracts, it drives the limiting rod to slide along the limiting frame, and through the hinged engagement between the limiting rod and the folding bracket, it drives the folding bracket to unfold or fold, so that the pedal rises and falls along the axial direction of the retractable column.

[0017] By adopting the above technical solutions, the mechanical linkage between the hydraulic cylinder and the limit rod replaces the traditional manual winch and cable system, realizing one-button lifting and lowering of the platform height, significantly simplifying the operation process and avoiding the tedious steps of manual locking. The sliding cooperation design of the folding bracket and the limit frame allows the scaffolding to fold or unfold simultaneously during lifting, greatly reducing the storage volume and solving the problem of scattered parts and large space occupation after disassembly of traditional scaffolding. The coordinated adjustment mechanism of the telescopic column and the folding bracket improves the height adjustment accuracy while enhancing structural stability through multi-node hinges and rigid guidance of the limit frame, effectively preventing swaying or overturning caused by load shift during operation. In addition, the modular design of the platform and ladder takes into account both construction safety and scene adaptability, meeting the needs of diverse construction scenarios for efficiency, portability and safety.

[0018] Furthermore, the folding bracket is hinged together by at least two connecting plates, each connecting plate including a connecting section and a lifting section. The connecting section is hinged to the mounting plate, and the other end of the connecting section is connected to the lifting section via a fixing rod. The lifting section is hinged to the bottom of the pedal.

[0019] By adopting the above technical solution, the folding bracket is designed as a split hinged connecting plate structure. The connecting section and the lifting section are rigidly connected by a fixed rod, forming an optimized force transmission path. This ensures that the thrust of the drive cylinder is evenly transmitted to the bottom of the pedal, avoiding the deformation risk caused by the concentrated force of traditional integral brackets. At the same time, the split connecting plate can be independently folded, further reducing the space occupied by the bracket and improving folding efficiency. The direct hinged design between the lifting section and the pedal ensures that the pedal always moves synchronously with the folding bracket during the lifting process, preventing tilting or jamming caused by multi-point transmission errors. In addition, the modular connecting plate structure facilitates local maintenance or replacement, reduces maintenance costs, extends the overall service life, and is suitable for stability requirements in environments with frequent height adjustments or complex construction conditions.

[0020] Furthermore, two sets of connecting plates are provided, and the middle areas of the two sets of connecting plates are hinged together by a connecting rod to form the folding bracket.

[0021] By adopting the above technical solution, a symmetrically distributed X-shaped folding bracket structure is formed through the hinged design of the central connecting rods of the two sets of connecting plates. During the lifting process, the driving force is transmitted evenly in both directions, which significantly improves the load-bearing stability of the pedal and avoids the risk of overturning due to unilateral force. The introduction of the connecting rod hinge point allows the two sets of connecting plates to retract inward synchronously when folding, reducing the lateral space occupied by the bracket in the unfolded state and further optimizing the compactness of storage. At the same time, this design enhances the overall deformation resistance of the bracket through mechanical redundancy, which is especially suitable for long-term use under large span or high load conditions. Moreover, when a local connecting plate is damaged, it can be replaced individually without the need for overall disassembly, which greatly reduces maintenance costs and improves construction continuity.

[0022] Furthermore, the retractable column includes a positioning section and a telescopic section, the mounting plate is fixed on the positioning section, and the telescopic section is connected to the pedal.

[0023] By adopting the above technical solution, the retractable column is divided into a positioning section and a telescopic section. The mounting plate and the positioning section are rigidly connected to form a stable foundation, ensuring the reliability of the force transmission path of the lifting device and avoiding the risk of loosening of connection nodes caused by frequent extension and retraction of traditional integral columns. The telescopic section is independently connected to the pedal, so that only the displacement of this section needs to be controlled when adjusting the height, reducing the impact of the overall deformation of the column on the lifting accuracy and improving the efficiency of fine adjustment.

[0024] Furthermore, a handrail is provided on the top of the pedal, the handrail is welded to three side plates on the top of the pedal, and the escalator is welded to the other side plate of the pedal.

[0025] By adopting the above technical solution, the handrails are welded to the three side plates at the top of the treads, forming a stable three-sided protective structure that effectively prevents workers from falling accidentally. This solves the problem of redundant components and complicated installation caused by the need to add guardrails to traditional scaffolding. The escalator is directly welded to the other side plate of the treads, realizing the integrated design of the upper and lower passages and the working platform. This avoids the disadvantages of traditional split escalators being easily lost or misaligned during transportation, while also simplifying the assembly process. The overall structure enhances the reliability of the connection through rigid welding, eliminating the potential loosening hazards that may occur from bolt tightening. It is especially suitable for long-term safe use under high-frequency vibration or moving conditions, balancing construction efficiency and personnel safety.

[0026] Furthermore, the escalator includes escalator one and escalator two, the top of escalator one is welded to the tread, and escalator two is hinged to the bottom of escalator one.

[0027] By adopting the above technical solution, and designing the escalator as a hinged, split structure, the stability of the upper and lower passages is ensured while the second escalator is foldable. When the scaffolding is stored, the second escalator can be folded inward, reducing the space occupied by the extended parts and improving the overall compactness. The rigid welding between the first escalator and the treads ensures the reliability of support for workers climbing, while the hinged design between the second escalator and the first escalator can automatically adjust the tilt angle according to the difference in ground height, enhancing adaptability to complex terrain. In addition, the split escalator facilitates partial replacement or maintenance, avoiding the scrapping of the entire escalator due to partial damage, reducing usage costs, and meeting the dual requirements of rapid deployment and safe storage.

[0028] The beneficial effects of this utility model are as follows:

[0029] 1. This utility model replaces the traditional manual winch and cable system by mechanically linking the drive cylinder and the limit rod, realizing one-button raising and lowering of the pedal height, significantly simplifying the operation process and avoiding the tedious steps of manual locking.

[0030] 2. This utility model uses a sliding cooperation design between the folding bracket and the limiting frame to enable the scaffolding to fold or unfold synchronously during the lifting process, which greatly reduces the storage volume and solves the problem of traditional scaffolding having scattered parts and occupying a lot of space after disassembly.

[0031] 3. This utility model improves the height adjustment accuracy and enhances structural stability by using a segmented structure (positioning section and telescopic section) of the telescopic column and a symmetrical hinged design of the folding bracket, effectively preventing shaking or overturning caused by load shift during operation.

[0032] 4. This utility model integrates a three-sided handrail, a split escalator, and a modular tread design, taking into account both construction safety and scene adaptability, simplifying the assembly process and enhancing terrain adaptability, thus meeting the needs of diverse construction scenarios for efficiency, portability, and safety. Attached Figure Description

[0033] 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:

[0034] Figure 1 This is a schematic diagram of the structure of this utility model;

[0035] Figure 2 This is a schematic diagram of the assembly of the folding bracket and mounting plate of this utility model. Figure 1 ;

[0036] Figure 3 This is a left view of the fully unfolded present invention.

[0037] Figure 4 This is a schematic diagram of the assembly of the mounting plate and the folding bracket of this utility model. Figure 2 ;

[0038] Figure 5 This is a schematic diagram of the structure of the escalator of this utility model;

[0039] Figure 6 This utility model Figure 5 Enlarged schematic diagram of part A in the middle.

[0040] Among them, 10 - universal wheels;

[0041] 20 - Telescopic column; 21 - Positioning section; 22 - Telescopic section;

[0042] 30-Lifting device; 31-Folding bracket; 311-Connecting plate; 3111-Connecting section; 3112-Lifting section; 312-Fixing rod; 313-Connecting rod; 32-Drive cylinder; 33-Mounting plate; 34-Limit rod; 35-Limit frame;

[0043] 40 - Escalator; 41 - Escalator 1; 42 - Escalator 2;

[0044] 50-Pedal. Detailed Implementation

[0045] The embodiments of this utility model are described in detail below. Examples of these embodiments 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 this utility model, and should not be construed as limiting this utility model.

[0046] The following description, in conjunction with the accompanying drawings, describes a foldable construction scaffold according to an embodiment of the present invention.

[0047] like Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, the foldable construction scaffold of this utility model includes four vertically arranged telescopic columns 20, with casters 10 fixed to the bottom by bolts and a ladder 40 connected to the top by welding or bolts. A mounting plate 33 is horizontally fixed to the middle area of ​​the four columns 20, and the mounting plate 33 is rigidly connected to the outer wall of the columns 20, serving as the mounting base for the lifting device 30. The lifting device 30 includes a folding bracket 31, a drive cylinder 32, a limiting rod 34, and a limiting frame 35. The cylinder body of the drive cylinder 32 is fixed to the mounting plate 33, and its telescopic end is connected to one end of the limiting rod 34 by a hinge. The two ends of the limiting rod 34 are slidably embedded in two limiting frames 35, which are vertically welded to the left and right sides of the top of the mounting plate 33, respectively. The limiting rod 34 passes through the middle of the folding bracket 31 and is connected to the bracket through a hinge point. The folding bracket 31 consists of two sets of symmetrically distributed connecting plates 311. Each set of connecting plates 311 includes a connecting section 3111 hinged at the bottom to the mounting plate 33 and a lifting section 3112 hinged at the top to the bottom of the pedal 50. The connecting section 3111 and the lifting section 3112 are rigidly connected by a fixing rod 312. The middle area of ​​the two sets of connecting plates 311 is cross-hinged by a transverse connecting rod 313 to form an X-shaped folding structure. The telescopic column 20 is divided into a positioning section 21 and a telescopic section 22. The positioning section 21 is fixedly connected to the mounting plate 33, and the telescopic section 22 is nested inside the positioning section 21 and its top is connected to the pedal 50. Handrails 51 are welded to the top three sides of the pedal 50, and escalator 41 is welded to the fourth side. The bottom of escalator 41 is connected to foldable escalator 42 via a hinge shaft. The extension end of the drive cylinder 32 pushes the limit rod 34 to slide horizontally along the limit frame 35, causing the folding bracket 31 to unfold or fold around the hinge point of the mounting plate 33. The lifting section 3112 synchronously drives the pedal 50 to rise and fall vertically along the axis of the telescopic column 20. The extension section 22 extends and locks accordingly. When folding, the drive cylinder 32 retracts to close the folding bracket 31, and the pedal 50 is lowered to the low position. At the same time, escalator 42 flips upward around the hinge point and attaches to the side of escalator 41, achieving compact storage.

[0048] In one embodiment, the telescopic end of the drive cylinder 32 pushes the limiting rod 34 through a hinge, causing the limiting rod 34 to slide horizontally along the limiting frames 35 on both sides of the top of the mounting plate 33. The horizontal displacement of the limiting rod 34 drives the folding bracket 31 to move through the hinge point. When the limiting rod 34 slides away from the cylinder, the two sets of X-shaped intersecting folding brackets 31 unfold around the hinge point of the mounting plate 33, and the lifting section 3112 simultaneously pushes the pedal 50 to rise vertically. Conversely, when the limiting rod 34 is pulled back, the folding bracket 31 retracts, causing the pedal 50 to fall. When the pedal 50 rises or falls, the telescopic section 22 of the telescopic column 20 extends or retracts synchronously along the axis of the positioning section 21, and is locked through the pin hole to achieve height fixation, forming double support. The limiting frame 35 constrains the sliding trajectory of the limiting rod 34, ensuring that there is no lateral deviation during the unfolding or folding of the folding bracket 31, and improving the straightness accuracy of the lifting path.

[0049] In one embodiment, escalator 1 41 is vertically fixed to the side of tread 50. The worker manually pulls down escalator 2 42, causing it to rotate around the bottom hinge point until it contacts the ground, forming a continuous staircase from the ground to tread 50. After the bottom of escalator 2 42 contacts the ground, it can adaptively adjust its tilt angle due to differences in terrain to ensure that the tread surface remains horizontal and avoid slipping. The worker goes up and down along the steps of escalator 1 41 and escalator 2 42. The welded structure of escalator 1 41 and tread 50 and the hinge rigidity of escalator 2 42 provide stable support. The handrail 51 surrounds tread 50 on three sides to prevent lateral falls during climbing. After construction is completed, escalator 2 42 is manually lifted and rotated upward around the hinge axis to fit against the side of escalator 1 41. The folded escalator 2 42 is parallel to escalator 1 41, reducing the outward extension size and facilitating the overall movement or storage of the scaffolding.

[0050] Working principle: The drive cylinder 32 serves as the core power source, with its cylinder body fixed to the mounting plate 33. Its telescopic end is connected to the limiting rod 34 via a hinge. When the cylinder is energized or manually pressurized, the telescopic end reciprocates along the axis, pushing or pulling the limiting rod 34 horizontally. The two ends of the limiting rod 34 are embedded in the limiting frames 35 on both sides of the top of the mounting plate 33. The limiting frames 35 precisely constrain the sliding trajectory of the limiting rod 34, ensuring it can only move horizontally and preventing skewing or jamming. The limiting rod 34 passes through the middle of the folding bracket 31 and is fixed at the hinge point. Its horizontal displacement directly drives the folding bracket 31 to unfold or retract around the bottom hinge point of the mounting plate 33. When the drive cylinder 32 extends, the limiting rod 34 slides away from the cylinder, causing the two sets of X-shaped intersecting folding brackets 31 to unfold outwards around the bottom hinge point. At this time, the lifting section 3112 of the connecting plate 311 pushes the pedal 50 upward, causing it to rise vertically along the axis of the telescopic column 20. When the drive cylinder 32 retracts, the limit rod 34 pulls back, the folding bracket 31 retracts inward, and the lifting section 3112 pulls down the pedal 50, causing it to descend smoothly. The positioning section 21 is fixed on the caster wheel 10 as a static support base. The telescopic section 22 is nested inside the positioning section 21, and its top end is connected to the pedal 50. When the pedal 50 is raised or lowered, the telescopic section 22 extends or retracts synchronously, and the height is finely adjusted by locking through the pin hole, forming a double rigid support. It is welded to the top three sides of the pedal 50 to form a closed guardrail to prevent workers from falling sideways. The first ladder 41 is vertically fixed to the side of the pedal 50, and the second ladder 42 unfolds to the ground around the bottom hinge point to form a continuous staircase. The second ladder 42 flips upward and attaches to the side of the first ladder 41 to reduce the outward extension size and facilitate transportation and storage. It is installed at the bottom of the telescopic column 20 and has a braking function, which allows the scaffolding to be moved to the target position and then locked to ensure that there is no risk of displacement during operation. The drive cylinder 32 is activated, and the limit rod 34 slides horizontally to the folding bracket 31 to unfold or retract. The lifting section 3112 pushes the pedal 50 to rise or fall, so that the telescopic section 22 extends and retracts synchronously and locks. The second ladder 42 is unfolded to the ground to form a safe passage. After the operation is completed, it is folded and stored, moved to the construction position by the casters 10, and the operation can begin after the brake is locked.

[0051] 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 foldable construction scaffold characterized by comprising: Includes casters (10), retractable columns (20), lifting devices (30), escalators (40), and steps (50); The retractable column (20) is fixedly installed with the caster wheel (10) at its bottom and fixedly connected to the escalator (40) at its top. The lifting device (30) includes a folding bracket (31), a drive cylinder (32), a mounting plate (33), a limiting rod (34), and a limiting frame (35); The mounting plate (33) is fixedly connected between the four retractable columns (20); The bottom end of the folding bracket (31) is hinged to the mounting plate (33), and the top end is hinged to the pedal (50); The cylinder body of the driving hydraulic cylinder (32) is fixed on the mounting plate (33), and the telescopic end of the driving hydraulic cylinder (32) is connected to the limiting rod (34); Two limiting frames (35) are provided. The two ends of the limiting rod (34) are slidably installed in the limiting frame (35). The folding bracket (31) is fitted on the limiting rod (34). The limiting frames (35) are respectively fixed to the top two sides of the mounting plate (33). When the drive cylinder (32) extends or retracts, it drives the limiting rod (34) to slide along the limiting frame (35), and through the hinged cooperation between the limiting rod (34) and the folding bracket (31), it drives the folding bracket (31) to unfold or fold, so that the pedal (50) rises and falls along the axis of the retractable column (20).

2. The foldable construction scaffold according to claim 1, wherein: The folding bracket (31) is hinged together by at least two connecting plates (311), the connecting plate (311) including a connecting section (3111) and a lifting section (3112), the connecting section (3111) being hinged to the mounting plate (33), the other end of the connecting section (3111) being connected to the lifting section (3112) by a fixing rod (312), the lifting section (3112) being hinged to the bottom of the pedal (50).

3. The foldable construction scaffolding according to claim 2, characterized in that: Two sets of connecting plates (311) are provided. The middle areas of the two sets of connecting plates (311) are hinged together by connecting rods (313) to form the folding bracket (31).

4. The foldable construction scaffolding according to claim 1, characterized in that: The retractable column (20) includes a positioning section (21) and a telescopic section (22). The mounting plate (33) is fixed on the positioning section (21), and the telescopic section (22) is connected to the pedal (50).

5. The foldable construction scaffolding according to claim 1, characterized in that: The top of the pedal (50) is also provided with a handrail (51), which is welded to three side plates on the top of the pedal (50), and the escalator (40) is welded to the other side plate of the pedal (50).

6. The foldable construction scaffolding according to claim 5, characterized in that: The escalator (40) includes escalator one (41) and escalator two (42). The top of escalator one (41) is welded to the footboard (50), and the bottom of escalator one (41) is hinged to escalator two (42).

Images