Elevator shaft external hydraulic jacking same-floor protection platform

Abstract

The utility model discloses an elevator shaft outer injection type hydraulic jacking same layer protection platform, its characterized in that, including 4 outer injection type hydraulic props, the hydraulic prop is connected with hydraulic pump, and the hydraulic prop top and bottom are fixedly provided with hydraulic rod crossbeam, and the crossbeam is connected by longitudinal beam between, and the hydraulic rod crossbeam includes outer beam and inner beam, the outer beam is square tube, and both ends are provided with small diameter section, and the small diameter section middle part is provided with driven hole, the inner beam is cylindrical telescopic steel beam, and the inner beam both sides are provided with positioning ring, and through the bolt passes through the driven hole and positioning ring of small diameter section outside, fixes small diameter section on the inner beam, sets up the protection platform frame on the upper portion of hydraulic rod crossbeam of hydraulic prop top, and the protection platform frame inboard is detachably provided with protection platform, sets up the bottom platform below the hydraulic rod crossbeam of hydraulic prop bottom, still is installed with prop fixing frame between the hydraulic prop.

Description

Technical Field

[0001] This utility model belongs to the field of elevator shaft safety protection platform tools during the construction of engineering projects, and specifically relates to an external injection hydraulic jacking same-floor protection platform for elevator shafts. Background Technology

[0002] Elevator shafts are among the high-risk areas in construction operations, and the innovation of their protective technology has always been a core issue in the industry's safety management. Traditional elevator shaft protective platforms mostly use fixed or simple lifting structures, which suffer from poor adaptability, cumbersome operation, and significant safety hazards. Especially in high-rise building construction, frequent adjustments to the height of the protective platform are time-consuming and labor-intensive, and it is difficult to accurately adapt to different floor height requirements, resulting in gaps between the working surface and the protective layer, greatly increasing the risk of falls from heights and being struck by objects. In recent years, hydraulic jacking protective platforms have gradually replaced traditional technologies due to their dynamic adjustment capabilities, but the following core defects still exist in practical applications: 1. Reliability of fall protection performance: Existing fall arrest devices (such as safety nets and barriers) perform well in static tests, but their dynamic performance is insufficient, and they may fail due to vibration or impact during actual construction. In addition, fall arrest devices need to be precisely aligned with the platform. If the installation deviation exceeds the allowable range, their interception effect will be greatly reduced, and existing technologies lack effective on-site testing methods.

[0003] 2. The contradiction between cost control and economic efficiency: The high manufacturing cost of hydraulic systems, high-strength materials, and precision machining processes limits their adoption in small and medium-sized projects. Furthermore, hydraulic components require regular replacement of filters and seals, and troubleshooting necessitates specialized technicians, resulting in high long-term operating costs and diminishing their technological and economic advantages.

[0004] This technology, through structural optimization and upgraded drive mechanisms, addresses the pain points of traditional protective platforms, such as insufficient versatility, low operational efficiency, and high safety risks. It enables simultaneous protection and construction, is reusable, adaptable to different elevator shaft specifications, and reduces the cost per project. This technology provides crucial support for the standardization of safety in high-rise building construction and has positive significance for reducing safety accidents and promoting the development of industrialized construction. Utility Model Content

[0005] The purpose of this utility model is to provide an external injection hydraulic jacking same-floor protection platform for elevator shafts, addressing the aforementioned problems. This utility model aims to solve the pain points of traditional protection platforms, such as insufficient versatility, low operating efficiency, and high safety risks, enabling simultaneous progress of protection and construction. It is also reusable, adaptable to the characteristics of elevator shafts of different specifications, and effectively reduces the cost of a single project.

[0006] The technical solution of this utility model is as follows: This utility model discloses an externally injected hydraulic lifting protective platform for elevator shafts, comprising four externally injected hydraulic supports. Each hydraulic support is externally connected to a hydraulic pump. Hydraulic rod beams are fixedly installed at the top and bottom of the hydraulic supports, and the beams are connected by longitudinal beams. A protective platform frame is installed on the upper part of the hydraulic rod beams at the top of the hydraulic supports, and a protective platform is detachably installed inside the protective platform frame. A bottom platform is installed below the hydraulic rod beams at the bottom of the hydraulic supports. Support fixing frames are also installed between the hydraulic supports.

[0007] The hydraulic props, serving as the main vertical support, are driven by a hydraulic pump to achieve the lifting function, adapting to changes in elevator shaft height. Horizontal and longitudinal beams form a horizontal frame, distributing loads and enhancing structural rigidity. The telescopic structure of the outer and inner beams adjusts the extension length of the inner beam to fit elevator shafts of different widths, improving equipment versatility. The combination of positioning rings, driven holes, and bolts ensures precise positioning and rigid connection between the inner and outer beams, preventing slippage after telescoping. The combination of square outer beams and cylindrical inner beams balances bending resistance and telescopic flexibility. A protective platform provides a working surface, and its detachable design facilitates installation and replacement. The bottom platform serves as a foundation support, preventing overall structural subsidence. The prop fixing frame connects laterally to the hydraulic props, preventing tilting or instability during lifting.

[0008] Furthermore, the hydraulic support is equipped with a hydraulic system, which includes a synchronous control valve group and a controller. The synchronous control valve group includes a proportional valve and a pressure sensor. The proportional valve is installed on the oil supply line of each hydraulic support, and the pressure sensor monitors the lifting pressure of each support in real time and feeds it back to the controller. The controller adjusts the opening of the proportional valve to ensure that the lifting speed difference of the four hydraulic supports is less than 5%, thereby achieving synchronous lifting. This solves the problem of platform tilting caused by pressure differences when lifting multiple supports, improves the stability of the lifting process, and avoids structural jamming or safety accidents caused by asynchrony.

[0009] Furthermore, a haunch angle reinforcing plate is provided on the inner side of the connection between the hydraulic rod crossbeam and the longitudinal beam. The reinforcing plate strengthens the node connection between the crossbeam and the longitudinal beam, resists shear force and bending moment, and prevents cracking or deformation at the connection after long-term use; it also improves the torsional stiffness of the overall frame, making it particularly suitable for the complex stress environment inside the elevator shaft.

[0010] Furthermore, the support frame is divided into horizontal bars and diagonal bars, which are installed on the hydraulic support in a Z-shape. The Z-shaped structure forms a triangular support, which effectively constrains the lateral displacement of the hydraulic support by utilizing the principle of triangular stability. The combination of horizontal bars and diagonal bars can disperse the lateral force during jacking and prevent the support from bending due to uneven force.

[0011] Furthermore, the connection between the horizontal bar and the diagonal bar of the support frame is provided with an adjustable length mechanical slide groove structure. The mechanical slide groove includes a strip hole at the end of the horizontal bar and a locking bolt fixed at the end of the diagonal bar. By sliding the end of the diagonal bar (72) along the strip hole of the horizontal bar, the overall width of the Z-shaped support frame is adjusted. After adjustment, the locking bolt is tightened to realize the lateral constraint of the support frame on the hydraulic support.

[0012] Furthermore, the hydraulic support is a three-section telescopic rod. The three-section design allows the support to retract to its shortest length when not in operation, facilitating transportation and passage through narrow elevator shaft openings. When in operation, it extends section by section to adapt to the construction needs of elevator shafts with different floor heights, thus improving versatility.

[0013] Furthermore, the protective platform frame and the protective platform are connected by a butterfly hinge. The butterfly hinge allows the platform to rotate freely within a certain angle and is detachable, making it easy to adjust the angle and fit against the elevator shaft wall during installation. The hinge structure can absorb construction vibrations or accidental impacts, avoiding stress concentration caused by the rigid connection of the platform.

[0014] Furthermore, the hydraulic rod crossbeam includes an outer beam and an inner beam. The outer beam is a square tube with small-diameter sections at both ends and a driven hole in the middle of each small-diameter section. The inner beam is a cylindrical telescopic steel beam with positioning rings on both sides. By using bolts to pass through the driven holes and positioning rings of the outer small-diameter sections, the small-diameter sections are fixed to the inner beam. By adjusting the extension length of the inner beam, it can adapt to elevator shafts of different widths, improving the equipment's versatility. It achieves precise positioning and rigid connection between the inner beam and the small-diameter sections, preventing slippage after telescopic extension. The combination of the square outer beam and the cylindrical inner beam balances the bending resistance of the outer beam and the telescopic flexibility of the inner beam.

[0015] Furthermore, the hydraulic support and the crossbeam are connected by bolts using a connecting plate. The connecting plate evenly distributes the concentrated load between the hydraulic support and the crossbeam, preventing local crushing. The bolt connection method facilitates disassembly and maintenance while ensuring connection strength, adapting to the repeated disassembly and assembly needs on the construction site.

[0016] In addition, the surface of the protective platform is made of printed steel plate. The high surface roughness of the printed steel plate increases the friction between personnel / equipment and the platform, preventing slipping due to rain or oil.

[0017] Additionally, a fall arrestor is installed on the outside of the protective platform. The fall arrestor includes a double-layered interception net and a buffer spring. The fall arrestor can intercept falling objects or people to prevent falls from heights. In conjunction with the detachable platform design, the fall arrestor can be raised and lowered synchronously with the platform to achieve full protection.

[0018] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are: 1. This utility model provides an external injection hydraulic jacking protection platform for elevator shafts, which improves upon traditional elevator shaft protection technology and solves the technical problem of self-climbing and descending during the lifting and lowering process of elevator shaft protection platforms. This achieves the versatility, applicability, convenience, and economy of elevator shaft jacking protection platform technology.

[0019] 2. This utility model effectively reduces the possibility of accidents during work by setting up anti-fall devices and using non-slip printed steel plates for the platform. Attached Figure Description

[0020] Figure 1 This is an overall schematic diagram of an external injection hydraulic jacking same-floor protection platform for elevator shafts according to this utility model; Figure 2 This is a schematic diagram of the inner beam of this utility model; Figure 3 This is a schematic diagram of the outer beam of this utility model; Figure 4 This is a schematic diagram of the connecting plate of this utility model; Figure 5 This is a schematic diagram of the axillary angle reinforcing plate of this utility model.

[0021] Reference numerals: 1-Hydraulic support, 2-Crossbeam, 21-Outer beam, 22-Inner beam, 23-Driven hole, 24-Positioning ring, 3-Longitudinal beam, 4-Protective platform frame, 5-Protective platform, 6-Bottom platform, 7-Support fixing bracket, 71-Crossbar, 72-Diagonal bar, 8-Half-angle reinforcing plate, 9-Connecting plate. Detailed Implementation

[0022] It should be noted that relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0023] The features and performance of this utility model will be further described in detail below with reference to the embodiments.

[0024] like Figures 1-5 As shown, the following are the installation steps of this utility model: Step 1: Assemble the frame and flat platform of the externally injected hydraulic in-floor protective platform in the basement or on the first floor.

[0025] Frame assembly: Four 150mm×125mm×1800mm horizontal beams (2) are welded to the longitudinal beams (3) to form a horizontal frame, with a beam butt tolerance of ≤2mm.

[0026] The bottom platform (6) is made of 3mm thick galvanized patterned plate (1800mm×1800mm), which is fixed to the crossbeam (2) by U-shaped clips with a spacing of 500mm between clips.

[0027] The bottom of the hydraulic support (1) is bolted to the crossbeam (2) through a 250mm×250mm column connecting plate (9), using M16×50 high-strength bolts with a torque value of 180N·m.

[0028] Key points: Before welding the crossbeams and longitudinal beams, the verticality must be calibrated, with an error of ≤5mm; when paving the bottom platform, sealant must be applied to the joints of the patterned plates to prevent rust.

[0029] Step 2: Assemble the top frame and platform board, and conduct debugging and acceptance.

[0030] Top frame installation: The top beam (2) is connected to the top of the hydraulic support (1) by a connecting plate (9), and the structure is the same as the first step.

[0031] The protective platform frame (4) is welded with 100mm×80mm square steel and connected to the top beam (2) by a 51mm×38mm butterfly hinge. The hinge axis is 50mm from the edge of the frame.

[0032] The protective platform (5) is laid with 3mm thick galvanized checkered plate (1800mm×1800mm) and self-tapping screws spaced 200mm apart.

[0033] Debugging and acceptance: After the hydraulic pump is started, check the synchronization of the four hydraulic supports (1). The difference in lifting speed is ≤5% (adjust the proportional valve through the PLC controller).

[0034] The platform elevation must be flush with the surface of the same layer of structure or 300mm lower than the bottom of the upper layer of formwork. It should be checked with a level during acceptance.

[0035] Step 3: Lifting operation during the construction of the second-floor structure.

[0036] Preparations before lifting: Fold the cantilevered folding plates around the protective platform (5) inward (folding angle 90°) to avoid scratching the surrounding templates.

[0037] Check whether the extension length of the inner beam (22) is 1700mm and whether the bolts of the driven hole (23) and the positioning ring (24) of the small diameter section (133mm×106mm×800mm) of the outer beam (21) are tightened.

[0038] Lifting process: Start the hydraulic pump, and the four hydraulic supports (1) will be lifted synchronously to the target elevation (error ≤ 10mm).

[0039] During the jacking process, pressure sensor data is monitored in real time, and the deviation of single column pressure value is ≤5%.

[0040] Step 4: Retraction and elevation of the hydraulic column.

[0041] Contraction operation: After the lifting is completed, the top beam of the platform is extended into the reserved opening (the opening size is ≥200mm×200mm) to form a hanging beam.

[0042] Before retracting the hydraulic support (1), adjust the 70mm×50mm×1350mm support fixing frame crossbar (71) and 70mm×50mm×1600mm diagonal bar (72) to the appropriate width through the strip hole, and tighten the bolt.

[0043] The hydraulic pump is started to retract the support column. After the horizontal steel beam of the base plate retracts, the bottom beam of the support column rises into the reserved hole to form a support beam.

[0044] Safety precautions: A standardized steel plate (thickness ≥ 2mm) or safety net with a mesh density ≤ 30mm is installed below the protective platform in the elevator shaft of each floor.

[0045] Step 5: Standard floor cyclic climbing operation.

[0046] Repeat steps three and four.

[0047] Before each floor is lifted, check whether the connecting bolts of the inner beam (22) and the outer beam (21) are loose, and whether the center of the driven hole (23) is aligned with the edge of the beam at 373mm / 68mm.

[0048] During cyclic operation, the hydraulic system requires the filter element to be replaced every 3 layers and the seals to be inspected every 6 months.

[0049] Key points: During the lifting and retraction process, personnel are strictly prohibited from standing on the edge of the platform (safe distance ≥ 500mm).

[0050] After each ascent, the bolt torque value (≥120N·m) of the armpit angle reinforcement plate (300mm×300mm) must be checked.

[0051] The embodiments described above merely illustrate specific implementation methods of this application, and while the descriptions are detailed and specific, they should not be construed as limiting the scope of protection of this application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the technical solution of this application, and these modifications and improvements all fall within the scope of protection of this application.

Claims

1. A hydraulic jacking protection platform for elevator shafts with external injection, characterized in that, It includes four externally injected hydraulic supports (1), each hydraulic support (1) is connected to a hydraulic pump. Hydraulic rod crossbeams (2) are fixedly installed at the top and bottom of the hydraulic supports (1). The crossbeams (2) are connected by longitudinal beams (3). Each hydraulic rod crossbeam (2) includes an outer beam (21) and an inner beam (22). The outer beam (21) is a square tube with small-diameter sections at both ends and a driven hole (23) in the middle of the small-diameter section. The inner beam (22) is a cylindrical telescopic steel beam. The inner beam (22) has... The positioning ring (24) fixes the small diameter section to the inner beam (22) by passing a bolt through the driven hole (23) of the outer small diameter section and the positioning ring (24); a protective platform frame (4) is provided on the upper part of the hydraulic rod crossbeam (2) at the top of the hydraulic support (1), and a protective platform (5) is detachably provided on the inner side of the protective platform frame (4); a bottom platform (6) is provided below the hydraulic rod crossbeam (2) at the bottom of the hydraulic support (1); and a support fixing frame (7) is also installed between the hydraulic supports (1).

2. The elevator shaft external injection hydraulic jacking same-floor protection platform according to claim 1, characterized in that: The hydraulic support (1) is equipped with a hydraulic system, which includes a synchronous control valve group and a controller. The synchronous control valve group includes a proportional valve and a pressure sensor. The proportional valve is installed on the oil supply line of each hydraulic support. The pressure sensor monitors the lifting pressure of each support in real time and feeds it back to the controller. The controller adjusts the opening of the proportional valve to ensure that the lifting speed difference of the four hydraulic supports is less than 5%, thereby achieving synchronous lifting.

3. The elevator shaft external injection hydraulic jacking same-floor protection platform according to claim 1, characterized in that, An axle angle reinforcing plate (8) is provided on the inner side of the connection between the hydraulic rod crossbeam (2) and the longitudinal beam.

4. The elevator shaft external injection hydraulic jacking same-floor protection platform according to claim 1, characterized in that, The support frame (7) is divided into a horizontal bar (71) and a diagonal bar (72), which are installed on the hydraulic support (1) in a Z-shape.

5. The elevator shaft external injection hydraulic jacking same-floor protection platform according to claim 3, characterized in that: The crossbar (71) and diagonal bar (72) of the support frame (7) are provided with an adjustable length mechanical slide groove structure. The mechanical slide groove includes a strip hole at the end of the crossbar (71) and a locking bolt fixed at the end of the diagonal bar (72).

6. The elevator shaft external injection hydraulic jacking same-floor protection platform according to claim 1, characterized in that, The hydraulic support (1) is a three-section telescopic rod.

7. The elevator shaft external injection hydraulic jacking same-floor protection platform according to claim 1, characterized in that, The protective platform frame (4) and the protective platform (5) are connected by a butterfly hinge.

8. The elevator shaft external injection hydraulic jacking same-floor protection platform according to claim 1, characterized in that, The hydraulic support (1) and the crossbeam (2) are connected by bolts via a connecting plate (9).

9. The elevator shaft external injection hydraulic jacking same-floor protection platform according to any one of claims 1-8, characterized in that, The protective platform frame (4) and the protective platform (5) are made of printed steel plate.

10. The elevator shaft external injection hydraulic jacking same-floor protection platform according to claim 9, characterized in that, A fall protection device is provided on the outside of the protective platform (5), which includes a double-layer interception net and a buffer spring.

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