A positioning and hoisting device for building fabricated composite floor

Abstract

The application relates to the technical field of building construction, in particular to a building assembly type composite floor positioning and hoisting device. The building assembly type composite floor positioning and hoisting device provided by the application mainly comprises the following main components: a profile steel main frame; a plurality of lifting lugs arranged at the top of the profile steel main frame; and a slide arranged at the side of the profile steel main frame. Through an automatic leveling mechanism, dynamic height synchronization of each lifting point is formed during hoisting, and the inclination and swing of the composite floor caused by uneven stress are significantly reduced. With the gradual elimination of the height difference, the composite floor can quickly recover to a stable posture close to the horizontal under the action of the dead weight, and the posture control ability and positioning accuracy during hoisting are effectively improved.

Description

Technical Field

[0001] This application relates to the field of building construction technology, specifically to a positioning and hoisting device for prefabricated composite floor slabs. Background Technology

[0002] In prefabricated building construction, composite floor slabs, as one of the main structural components, require tower cranes for overall hoisting and positioning at multiple lifting points. Current construction methods generally employ manual arrangement of lifting points, manual adjustment of wire rope lengths, and manual correction of the floor slab's posture. Since the lateral position of the lifting points is usually determined manually by pushing or repeated measurements, relying on the experience and coordination of construction workers, it is difficult to achieve precise alignment between multiple lifting points. This can easily lead to problems such as skewing, uneven stress, or localized misalignment of the floor slab during the initial hoisting, affecting the accuracy of the overall positioning.

[0003] During hoisting, the floor slab's posture often needs to remain relatively stable. However, existing methods mostly rely on manual rope adjustments or using tools such as pry bars and wooden wedges for height correction in a semi-hoisted state. This is cumbersome and has limited adjustment accuracy. When the floor slab is large, there are many hoisting points, or the construction space is limited, manual adjustment is not only inefficient, but also prone to uncontrolled adjustments or repeated corrections due to asynchronous operations between different personnel, thus prolonging the hoisting time. In summary, existing methods for hoisting composite floor slabs generally suffer from technical problems such as difficulty in ensuring positioning accuracy, inconvenient operation methods, and high dependence on manual labor. Utility Model Content

[0004] To address the shortcomings of existing technologies, this application provides a positioning and hoisting device for prefabricated composite floor slabs in buildings, which solves the above problems.

[0005] This application provides a positioning and hoisting device for prefabricated composite floor slabs in buildings, including: Steel main frame; Multiple lifting lugs are provided at the top of the main steel frame; The slide rail is located on the side of the main steel frame; An infrared telescopic self-balancing component is installed on the slide rail and can move horizontally along the slide rail. The bottom of the infrared telescopic self-balancing component is provided with a hook for connecting a steel wire rope to hoist the stacked floor slab. The infrared telescopic self-balancing component is used to adjust the vertical position of the hook to automatically level the hoisting point.

[0006] In the prefabricated composite floor slab positioning and hoisting device provided in this application, multiple support legs are fixed at the bottom of the main steel frame.

[0007] In the prefabricated composite floor slab positioning and hoisting device provided in this application, multiple sliders are provided on the slide rail, and the infrared telescopic self-balancing component is provided on the slider.

[0008] In the prefabricated composite floor slab positioning and hoisting device provided in this application, the infrared telescopic self-balancing component includes a sleeve fixed to the slider, a telescopic rod connected to the slide rail on the sleeve, a hook fixed to the bottom of the telescopic rod, a motor a at the top of the sleeve, the output shaft of the motor a extending into the sleeve and fixed with a screw, the screw rotatingly engaging with the sleeve, and the screw extending downwards to engage with the telescopic rod threadedly.

[0009] In the prefabricated composite floor slab positioning and hoisting device provided in this application, the infrared telescopic self-balancing component also includes a controller located inside the main steel frame. An infrared distance sensor is provided on the side of the sleeve and is electrically connected to the controller. The controller is electrically connected to the motor a.

[0010] In the prefabricated composite floor slab positioning and hoisting device provided in this application, a storage battery is also provided on the inner side of the main steel frame, which is electrically connected to the motor a, the infrared distance sensor and the controller.

[0011] In the prefabricated composite floor slab positioning and hoisting device provided in this application, the slide rail is provided with an adjustment component, which cooperates with each of the sliders to move the position of the sliders.

[0012] In the prefabricated composite floor slab positioning and hoisting device provided in this application, the adjustment component includes multiple motors b disposed on the slide rail, and the number of motors b is the same as the number of infrared telescopic self-balancing motors b.

[0013] This application has the following technical effects: This utility model provides a positioning and hoisting device for prefabricated composite floor slabs in buildings. By incorporating a sleeve, screw, telescopic rod, and motor 'a' into an infrared telescopic self-balancing assembly, the vertical position of the hook can be actively adjusted. An infrared distance sensor collects the height difference between the hoisting point and the composite floor slab in real time. The measured signal is processed by the controller and drives motor 'a' to make minute forward and reverse adjustments to the screw, thereby enabling continuous and precise telescopic compensation of the telescopic rod. Through this automatic leveling mechanism, each hoisting point achieves dynamic height synchronization during hoisting, significantly reducing the tilting and swaying phenomena of the composite floor slab caused by uneven force. As the height difference is gradually eliminated, the composite floor slab can quickly return to a near-horizontal stable posture under its own weight, effectively improving the attitude control capability and positioning accuracy during hoisting.

[0014] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and do not limit this application. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the overall structure of the prefabricated composite floor slab positioning and hoisting device provided in the embodiments of this application; Figure 2 This is another structural schematic diagram of the prefabricated composite floor slab positioning and hoisting device provided in the embodiments of this application; Figure 3 This is a schematic diagram of the sliding track structure of the prefabricated composite floor slab positioning and hoisting device provided in the embodiments of this application; Figure 4 This is a schematic diagram of the adjustment component structure of the prefabricated composite floor slab positioning and hoisting device provided in the embodiments of this application; Figure 5 This is a schematic diagram of the infrared telescopic adaptive component structure of the prefabricated composite floor slab positioning and hoisting device provided in the embodiments of this application.

[0017] Figure label: 100. Main steel frame; 101. Lifting lug; 102. Slide rail; 103. External telescopic self-balancing assembly; 104. Outrigger; 105. Sliding block; 106. Lifting hook; 200. Sleeve; 201. Telescopic rod; 202. Motor a; 203. Screw; 204. Controller; 205. Infrared distance sensor; 206. Battery; 300, Motor b; 301, Lead screw. Detailed Implementation

[0018] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0019] The following detailed description of some embodiments of this application is provided in conjunction with the accompanying drawings. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0020] It should be understood that the terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the scope of the application. As used in this specification and the appended claims, the singular forms “a,” “an,” and “the” are intended to include the plural forms unless the context clearly indicates otherwise.

[0021] It should be understood that, in order to clearly describe the technical solutions of the embodiments of this application, the terms "first" and "second" are used in the embodiments of this application to distinguish identical or similar items with essentially the same function and effect. For example, the first groove and the second groove are only used to distinguish different grooves and do not limit their order. Those skilled in the art will understand that the terms "first" and "second" do not limit the quantity or execution order, and the terms "first" and "second" are not necessarily different.

[0022] It should also be further understood that the term “and / or” as used in this application specification and the appended claims means any combination of one or more of the associated listed items and all possible combinations, and includes such combinations.

[0023] refer to Figures 1-5 In this embodiment, a prefabricated composite floor slab positioning and hoisting device includes a steel main frame 100, a plurality of lifting lugs 101 disposed on the top of the steel main frame 100, a slide rail 102 disposed on the side of the steel main frame 100, and an infrared telescopic self-balancing assembly 103 disposed on the slide rail 102. A hook 106 for connecting a steel wire rope is provided at the bottom of the infrared telescopic self-balancing assembly 103.

[0024] The main steel frame 100 serves as the load-bearing skeleton of the hoisting device. It has an overall rectangular frame structure, consisting of a rectangular outer frame and internal reinforcing components. The rectangular outer frame is constructed from welded No. 14 I-beams, forming the main load-bearing structure of the device and exhibiting excellent bending and torsional resistance. No. 14 channel steel is further welded into the internal area of ​​the rectangular outer frame as reinforcing components to improve the overall rigidity of the main frame, ensuring uniform load distribution and structural stability during the hoisting of composite floor slabs. Due to its large overall load-bearing surface and complete closed structure, the main steel frame 100 can effectively distribute concentrated loads from multiple hoisting points, making it suitable for repeated use in multi-point synchronous hoisting scenarios for prefabricated building floor slabs.

[0025] Multiple lifting lugs 101 are spaced apart on the top of the main steel frame 100 along its length, for use with the tower crane hook 106 to achieve overall suspension and lifting of the entire lifting device. A slide rail 102 is fixed to the side of the main steel frame 100, extending along its length, to provide guidance for the infrared telescopic self-balancing assembly 103 along its length, allowing the assembly to translate on the slide rail 102 to adjust its lateral position on the main steel frame 100.

[0026] The infrared telescopic self-balancing component 103 is installed on the slide rail 102 through its cooperation with the slide rail 102. Before construction, the construction personnel can move multiple infrared telescopic self-balancing components 103 along the slide rail 102 to a position roughly aligned with the corresponding lifting point according to the actual arrangement position of each lifting point (or pre-embedded lifting ring) on ​​the composite floor slab, and temporarily fix their current position on the slide rail 102. Each infrared telescopic self-balancing component 103 has a hook 106 at its bottom. One end of the steel wire rope is connected to the lifting point on the composite floor slab, and the other end of the steel wire rope is hooked to the hook 106 at the bottom of the corresponding infrared telescopic self-balancing component 103, so that the composite floor slab is correspondingly associated with multiple infrared telescopic self-balancing components 103 through multiple steel wire ropes.

[0027] The infrared telescopic self-balancing component 103 has the ability to adjust the vertical position of the hook 106 during the lifting process of the composite floor slab. Specifically, in operation, the infrared telescopic self-balancing component 103 can detect the change in distance between its corresponding lifting point and the composite floor slab, and accordingly drive its own length to extend or shorten, thereby changing the vertical position of the hook 106 relative to the main steel frame 100. When the composite floor slab is initially lifted off the ground as a whole, due to the influence of factors such as the position of each lifting point and construction errors, the force on the wire rope and the corresponding vertical height at each lifting point may differ, resulting in the composite floor slab being too high on one side or drooping at a certain corner. At this time, each infrared telescopic self-balancing component 103 automatically makes a slight adjustment to the vertical position of the hook 106 based on the distance it detects, so that the height of the lifting points gradually tends to be consistent, thereby allowing the overall posture of the composite floor slab to gradually transition from tilt to basic horizontal under the action of its own weight, achieving automatic leveling of each lifting point.

[0028] In this embodiment, a plurality of support legs 104, preferably four, are fixedly installed at the bottom of the main steel frame 100, and are respectively arranged at the four corners of the main steel frame 100. Each support leg 104 is welded to the I-beam frame of the main steel frame 100 to provide stable support for the main frame when the hoisting device is on the ground, being transported, or in standby mode, so as to prevent the main frame from tilting due to the shift of the center of gravity or the influence of external forces.

[0029] In this embodiment, the outrigger 104 is arranged vertically, and its length is set to be greater than the length of the infrared telescopic self-balancing component 103 plus the length of the hook 106. This ensures that when the device is not in a lifting condition, especially when the hook 106 and the telescopic component are in a fully extended or drooping state, the hook 106 is still located on the outrigger 104 and will not touch the ground or construction platform, effectively reducing the risk of the hook 106 being bumped, bent or accidentally snagged on foreign objects.

[0030] In this embodiment, a plurality of sliders 105 are provided on the slide 102, and each slider 105 is arranged along the length direction of the slide 102 and can be translated on the slide 102.

[0031] The slider 105 and the slide rail 102 are fitted together, so that the slider 105 can only move along the direction of the slide rail 102 under the guidance of the slide rail 102, thereby ensuring that the movement trajectory of the infrared telescopic self-balancing component 103 is stable and controlled during the adjustment process. Each infrared telescopic self-balancing component 103 is installed on the side of the corresponding slider 105 and is connected to the slider 105 by bolts or welding, so that the infrared telescopic self-balancing component 103 can move synchronously with the slider 105 on the slide rail 102.

[0032] In this embodiment, the infrared telescopic self-balancing assembly 103 includes a sleeve 200 fixed to the slider 105. The sleeve 200 serves as the main structure of the telescopic mechanism and is arranged vertically to accommodate the vertical adjustment stroke required for hoisting the composite floor slab. The connection between the sleeve 200 and the slider 105 allows the entire infrared telescopic self-balancing assembly 103 to move along the slide rail 102 with the slider 105, thereby flexibly adjusting its lateral position according to the actual distribution of the pre-embedded hoisting points of the composite floor slab.

[0033] A telescopic rod 201 is installed inside the sleeve 200. The telescopic rod 201 slides vertically inside the sleeve 200, and a hook 106 is fixedly connected to its bottom for connection with a wire rope. By changing the extension and retraction stroke of the telescopic rod 201, the vertical position of the hook 106 can be changed, thereby adjusting the force height of the connected lifting point. A motor a202 is fixed at the top of the sleeve 200. The output shaft of the motor a202 extends vertically downward into the sleeve 200 and is fixedly connected to a screw 203 inside the sleeve 200, forming an integral rotating structure. The output shaft is driven to rotate by the motor a202, and the screw 203 rotates accordingly.

[0034] The screw 203 is rotatably engaged within the sleeve 200 and extends downwards to thread into the telescopic rod 201. Since the telescopic rod 201 and the screw 203 form a threaded transmission pair, when the screw 203 rotates under the drive of the motor a202, the telescopic rod 201, constrained by the threaded engagement, will undergo relative linear displacement along the thread direction, thus producing an elongation or shortening action. By adjusting the forward and reverse rotation and the duration of rotation of the motor a202, precise adjustment of the small or large stroke of the telescopic rod 201 can be achieved to adapt to the height difference requirements between different lifting points.

[0035] In this embodiment, the infrared telescopic self-balancing assembly 103 also includes a controller 204 located inside the main steel frame 100. The controller 204 is installed in the structural cavity inside the main steel frame 100 by bolt fixing or bracket connection, remaining fixed to the overall lifting device, and is electrically connected to each telescopic assembly via cables. As the core component of the entire leveling system, the controller 204 is used to centrally receive sensor signals and execute drive commands to each motor.

[0036] To achieve real-time detection of the lifting point height, an infrared distance sensor 205 is installed on the side of the sleeve 200. The infrared distance sensor 205 is installed near the bottom of the outer wall of the sleeve 200, with its transmitting end facing the composite floor slab. It can measure the change in vertical distance between the sleeve 200 and the surface of the suspended floor slab in real time during the extension and retraction of the telescopic rod 201. The infrared distance sensor 205 is electrically connected to the controller 204 via a cable, so that each infrared telescopic self-balancing component 103 can transmit the real-time height information of its corresponding lifting point to the controller 204.

[0037] In addition, the controller 204 is electrically connected to the motor a202. After receiving ranging signals from each infrared distance sensor 205, the controller 204 determines whether the current lifting point needs height compensation through internal calculation logic, and outputs a forward or reverse drive command to the corresponding motor a202, causing the motor a202 to drive the screw 203 to rotate, thereby causing the telescopic rod 201 to extend or retract along the sleeve 200, realizing automatic adjustment of the position of the hook 106. Through the above structural arrangement, each infrared telescopic self-balancing component 103 can be vertically adjusted under the unified coordination of the controller 204, enabling the entire lifting system to have automatic leveling capability.

[0038] During the hoisting of the composite floor slab, each infrared distance sensor 205 continuously emits infrared beams downwards and receives reflected signals from the floor slab surface. Based on the light reflection information, it measures the vertical distance from the sleeve 200 to the floor slab surface in real time. When the floor slab tilts due to uneven force on each hoisting point after its initial lifting from the ground, the distance measurement results of each sensor will differ. After receiving these differences, the controller 204 can immediately identify which hoisting points are too high and which are too low.

[0039] When the distance to a certain suspension point is greater than that to other suspension points, indicating that the floor slab at that point is sagging or relatively low, the controller 204 will output a command to the corresponding motor a202 to rotate the screw 203 in the forward direction. The screw 203 rotates within the sleeve 200, causing the telescopic rod 201 to extend downwards to compensate for the height difference at that suspension point, gradually raising it to an elevation close to that of the other suspension points. Conversely, when the distance to a certain suspension point is significantly less than that to other suspension points, the controller 204 outputs a reverse drive command to the motor a202, causing the screw 203 to rotate in the reverse direction and the telescopic rod 201 to shorten upwards, thereby reducing the height of that suspension point and decreasing the height difference between the suspension points.

[0040] During this process, due to the high sensitivity and rapid response of the infrared distance sensor 205, each infrared telescopic self-balancing component 103 can simultaneously make minute adjustments during the tower crane lifting process, continuously reducing the height difference between the lifting points. Under the self-weight of the composite floor slab, the floor slab naturally tends to balance towards the lower position. When the controller 204 detects that the height deviation of all lifting points is within the set threshold range, the posture of the entire slab gradually changes from tilted to nearly horizontal, achieving automatic leveling. Compared with the traditional method that relies on manual judgment and manual rope adjustment, this embodiment requires no manual intervention during the adjustment process, which can significantly improve the hoisting positioning accuracy, reduce the number of manual interventions, avoid repeated corrections caused by human error, and improve construction efficiency and safety.

[0041] In this embodiment, a battery 206 is also provided inside the main steel frame 100 to provide an independent power supply for the infrared telescopic self-balancing assembly 103. The battery 206 is installed on the crossbeam or internal cavity structure inside the main steel frame 100 and fixed by brackets or pressure plates to maintain a stable installation state under vibration during hoisting. The battery 206 is electrically connected to the motor a202 and infrared distance sensor 205 in each infrared telescopic self-balancing assembly 103 via cables, providing continuous power for the drive output of the motor a202 and the ranging function of the infrared distance sensor 205.

[0042] By adopting a centralized power supply method using batteries 206, the hoisting device can operate independently without relying on external temporary power supply or ground wiring, avoiding the impact of complex power wiring and unstable power supply on the hoisting operation. At the same time, the batteries 206 are located inside the main steel frame 100, which can reduce the risk of impact and damage to the batteries 206 from the external environment and improve the reliability of the entire device under high-frequency operation conditions on site.

[0043] In this embodiment, an adjustment component is provided on the slide 102. The adjustment component is arranged along the length direction of the slide 102 and is used in conjunction with a plurality of sliders 105.

[0044] By adjusting the component settings, the movement of slider 105 no longer relies on manual pushing, but can achieve precise linear displacement through the rotation of lead screw 301. During the installation preparation stage, construction personnel can control the drive mechanism of the adjustment component to make slider 105 move smoothly along slide rail 102 to the target position, so that infrared telescopic self-balancing component 103 is finally aligned with the pre-embedded lifting point of the composite floor slab. Since slider 105 and lead screw 301 have a transmission cooperation relationship, its movement process has good positioning accuracy, which can avoid the problems of offset, swing or inaccurate positioning that may occur during manual pushing.

[0045] In this embodiment, the adjustment assembly includes multiple motors b300 disposed on the slide rail 102. The motors b300 are arranged at intervals along the length direction of the slide rail 102, and the number of motors b300 is the same as the number of infrared telescopic self-balancing components 103. Each motor b300 corresponds to one slider 105, forming a set of independent lateral drive units.

[0046] Specifically, the output shaft of each motor b300 is arranged along the length of the slide rail 102. A lead screw 301 is connected to the output shaft of each motor b300. The lead screw 301 is coaxially fixed with the output shaft of the motor b300, allowing the motor b300 to directly drive the lead screw 301 to rotate. Each lead screw 301 is threadedly engaged with a corresponding slider 105. The slider 105, through its internal thread, engages with the lead screw 301, forming a threaded transmission relationship. This allows the slider 105 to move linearly along the slide rail 102 when the lead screw 301 rotates.

[0047] Since each motor b300 corresponds to only one lead screw 301 and one slider 105, the infrared telescopic self-balancing component 103 forms a one-to-one correspondence with the adjustment component through the slider 105. Therefore, when adjusting the position of each suspension point of the composite floor slab, the lateral position of each infrared telescopic self-balancing component 103 can be independently controlled. By controlling the start, stop, and rotation direction of different motors b300, each slider 105 on the slide rail 102 can move towards both ends of the slide rail 102 or towards the center, so that the infrared telescopic self-balancing component 103 is accurately aligned with the pre-embedded suspension point position of the composite floor slab, achieving fine adjustment of the lateral arrangement.

[0048] In addition, each motor b300 is electrically connected to the battery 206 and controller 204 located inside the main steel frame 100 via cables. The battery 206 provides drive power to each motor b300, ensuring that the slider 105 obtains stable output power during lateral adjustment. The controller 204 is used to distribute start / stop commands and rotation direction control signals to each motor b300, enabling each motor b300 to operate independently or synchronously under the coordinated scheduling of the controller 204, thereby achieving precise adjustment of the position of multiple sliders 105.

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

Claims

1. A positioning and hoisting device for prefabricated composite floor slabs in buildings, characterized in that, include: Steel main frame; Multiple lifting lugs are provided at the top of the main steel frame; The slide rail is located on the side of the main steel frame; An infrared telescopic self-balancing component is installed on the slide rail and can move horizontally along the slide rail. The bottom of the infrared telescopic self-balancing component is provided with a hook for connecting a steel wire rope to hoist the stacked floor slab. The infrared telescopic self-balancing component is used to adjust the vertical position of the hook to automatically level the hoisting point.

2. The prefabricated composite floor slab positioning and hoisting device according to claim 1, characterized in that, The bottom of the main steel frame is fixed with multiple support legs.

3. The prefabricated composite floor slab positioning and hoisting device according to claim 1, characterized in that, The slide rail is provided with multiple sliders, and the infrared telescopic self-balancing component is located on the sliders.

4. The prefabricated composite floor slab positioning and hoisting device according to claim 3, characterized in that, The infrared telescopic self-balancing assembly includes a sleeve fixed to the slider, a telescopic rod connected to the sleeve via a slide rail, a hook fixed to the bottom of the telescopic rod, a motor a at the top of the sleeve, the output shaft of the motor a extending into the sleeve and fixed with a screw, the screw rotating within the sleeve, and the screw extending downwards to thread into the telescopic rod.

5. The prefabricated composite floor slab positioning and hoisting device according to claim 4, characterized in that, The infrared telescopic self-balancing assembly also includes a controller located inside the main steel frame. An infrared distance sensor is provided on the side of the sleeve and is electrically connected to the controller. The controller is electrically connected to the motor a.

6. The prefabricated composite floor slab positioning and hoisting device according to claim 5, characterized in that, The inner side of the main steel frame is also equipped with a battery, which is electrically connected to the motor a, the infrared distance sensor and the controller.

7. The prefabricated composite floor slab positioning and hoisting device according to claim 3, characterized in that, The slide is equipped with an adjustment component that works in conjunction with each of the sliders to move the position of the sliders.

8. The prefabricated composite floor slab positioning and hoisting device according to claim 7, characterized in that, The adjustment assembly includes multiple motors b disposed on the slide rail. The number of motors b is the same as that of the infrared telescopic self-balancing mechanism. A lead screw is connected to the output shaft of each motor b, and the lead screw is threadedly engaged with the slider.

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