A roof bottom form dismantling assisting device

CN224799911UActive Publication Date: 2026-09-25CHINA STATE CONSTR HAILONG TECH CO LTD +1
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Patent Information

Application Number
CN202521698733.7
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-08-11
Publication Date
2026-09-25
Estimated Expiration
2035-08-11

AI Technical Summary

Technical Problem

[0002]在装配式建筑领域,MiC生产工艺为五面体+后浇顶板,即顶板为二次浇筑,顶板底模拆除需要在MiC内部狭小的空间,由一人扶住模板,一人拆除螺栓,劳动强度大,拆除过程两人协作存在安全隐患

Benefits of technology

[0046]本申请提供的一种顶板底模拆除助力装置,具有以下突出效果:

✦ Generated by Eureka AI based on patent content.

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  • Figure CN224799911U_ABST
    Figure CN224799911U_ABST
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Abstract

The utility model relates to a roof bottom mould dismantling booster device, include: base, telescopic electric cylinder subassembly, connecting assembly and electromagnet, telescopic electric cylinder subassembly fixed setting on the base, the top of telescopic electric cylinder subassembly set up connecting assembly, electromagnet with connecting assembly connects, and float setting in the top of telescopic electric cylinder subassembly by means of connecting assembly, electromagnet can be adsorbed in the lower surface of roof low mould when electrifying, telescopic electric cylinder subassembly can drive electromagnet jacking or descending when electrifying, to jacking assist roof bottom mould when dismantling roof bottom mould, the utility model provides a roof bottom mould dismantling booster device simple and easy to operate, can be manually moved, adapts to the scene of narrow space, can provide jacking assist in the bottom mould dismantling process, reduces the labor intensity, eliminates the hidden danger.
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Description

Technical Field

[0001] This utility model belongs to the field of prefabricated building technology, and in particular relates to an assistive device for removing the bottom formwork of a roof slab. Background Technology

[0002] In the field of prefabricated buildings, the MiC (Medium-in-place) production process involves a five-sided structure plus a post-cast roof slab, meaning the roof slab is cast in two stages. Removing the bottom formwork of the roof slab requires working in the confined space inside the MiC, with one person holding the formwork while another removes the bolts. This is labor-intensive, and the two-person collaboration during removal poses safety hazards. Therefore, there is an urgent need to design an assistive device for removing the bottom formwork of the roof slab to eliminate the need for manual support, reduce labor intensity, and eliminate safety hazards. Utility Model Content

[0003] (a) Technical problems to be solved

[0004] To address the existing technical problems, this utility model provides a top slab bottom formwork removal assistance device. The device has a simple and lightweight structure, can be manually moved, is suitable for narrow spaces, and can provide lifting assistance during the bottom formwork removal process, reducing labor intensity and eliminating safety hazards.

[0005] (II) Technical Solution

[0006] To achieve the above objectives, the main technical solutions adopted by this utility model include:

[0007] A top slab bottom formwork removal assist device includes: a base, a telescopic electric cylinder assembly, a connecting assembly, and an electromagnet;

[0008] The telescopic electric cylinder assembly is fixedly mounted on the base;

[0009] The connecting component is disposed on the top of the telescopic electric cylinder assembly;

[0010] The electromagnet is connected to the connecting assembly and is floatingly mounted on top of the telescopic electric cylinder assembly by means of the connecting assembly;

[0011] When energized, the electromagnet can be attracted to the lower surface of the top plate low mold;

[0012] When energized, the telescopic electric cylinder assembly can drive the electromagnet to lift or lower, thereby assisting in lifting the top plate bottom mold during the removal of the top plate bottom mold.

[0013] Preferably, the telescopic electric cylinder assembly includes: a three-stage telescopic electric cylinder, a control switch mechanism, and a power supply assembly;

[0014] The three-stage telescopic electric cylinder, the control switch mechanism, and the power supply assembly are all mounted on the base.

[0015] The control switch mechanism is connected to the three-stage telescopic electric cylinder and the power supply assembly respectively, and can control the three-stage telescopic electric cylinder to start or stop working;

[0016] The power supply component can provide electrical energy to the three-stage telescopic electric cylinder.

[0017] Preferably, the electromagnet is connected to the control switch mechanism via a power supply line;

[0018] The power supply component is capable of providing electrical energy to the electromagnet;

[0019] The control switch mechanism can control the electromagnet to be energized or de-energized.

[0020] Preferably, the three-stage telescopic electric cylinder includes: a drive motor, a three-stage telescopic sleeve mechanism, and a transmission mechanism;

[0021] The three-stage telescopic sleeve mechanism, the drive motor, and the transmission mechanism are all mounted on the base.

[0022] The drive motor is connected to the transmission mechanism in a driving manner;

[0023] The transmission mechanism is disposed within the three-stage telescopic sleeve mechanism and is connected to the three-stage telescopic sleeve mechanism in a transmission manner;

[0024] The drive motor is also connected to the control switch mechanism.

[0025] Preferably, the connecting assembly includes: a connecting seat, a linear bearing, a guide shaft, and a spring;

[0026] The connecting seat is fixedly installed at the end of the piston rod of the three-stage telescopic electric cylinder;

[0027] The linear bearing is fixedly mounted on the connecting seat;

[0028] The guide shaft is mounted on the connecting seat by means of the linear bearing;

[0029] The electromagnet is connected to the guide shaft and is connected to the connecting seat by means of the guide shaft;

[0030] The spring is disposed on the guide shaft between the electromagnet and the connecting seat;

[0031] The electromagnet is floatingly mounted on the connecting seat by means of the guide shaft and the spring.

[0032] Preferably, the electromagnet has a rectangular structure;

[0033] The top of the connecting seat and the bottom of the electromagnet have a rectangular top surface structure.

[0034] The rectangular top surface structure is provided with mounting holes at all four corners;

[0035] Each of the aforementioned mounting holes contains a corresponding linear bearing;

[0036] Each of the linear bearings is equipped with a corresponding guide shaft;

[0037] Each of the aforementioned guide shafts is connected to a corresponding position at the bottom of the electromagnet;

[0038] Each of the aforementioned guide shafts is provided with the aforementioned spring.

[0039] Preferably, the base includes: a main structure and at least four support leg structures;

[0040] The platform is composed of the main structure's metal frame;

[0041] The outrigger structure is arranged at the four corners of the platform and is integrally formed with the platform.

[0042] The telescopic electric cylinder assembly is detachably fixed to the platform.

[0043] Preferably, each of the leg structures has a fixing hole at its bottom;

[0044] The base can be fixed to the indoor floor by means of the fixing holes and limiting bolts.

[0045] (III) Beneficial Effects

[0046] The top slab bottom formwork removal assist device provided in this application has the following outstanding effects:

[0047] Simple and lightweight structure: The device has a reasonable overall structural design and is lightweight, allowing it to be moved manually. It can easily adapt to construction scenarios with narrow spaces, solving the problem that traditional equipment cannot be used in confined spaces.

[0048] Reduced labor intensity: This device eliminates the need for manual formwork support. Workers only need to operate the switch mechanism, which greatly reduces labor intensity and physical exertion.

[0049] Improved safety: During the dismantling of the bottom formwork, the lifting device can support the bottom formwork, and when it is retracted, the electromagnet's attraction force can lower the bottom formwork to a preset height, thus avoiding safety accidents such as the bottom formwork falling due to improper manual operation during the dismantling process and eliminating safety hazards.

[0050] Simple and convenient to operate: Workers can control the electromagnet to turn on and off and the extension and retraction of the three-stage telescopic electric cylinder by controlling the switch mechanism. The operation process is simple, saves time and effort, and improves construction efficiency.

[0051] High adaptability: The three-stage telescopic electric cylinder design can meet the dismantling needs of the bottom mold of the top plate at different heights. The floating function of the electromagnet in the connecting component allows it to better adhere to the bottom mold with different surface conditions, thus improving the adaptability of the device. Attached Figure Description

[0052] Figure 1 A schematic diagram of the structure of a top plate bottom formwork removal assist device provided by this utility model;

[0053] Figure 2 A schematic diagram of the lifting state of a top plate bottom formwork removal assist device provided by this utility model;

[0054] Figure 3 This is a schematic diagram of the retracted state of a top plate bottom formwork removal assist device provided by this utility model.

[0055] [Explanation of Labels in the Attached Image]

[0056] 1: Base; 2: Three-stage telescopic electric cylinder; 3: Connecting seat; 4: Electromagnet; 5: Guide shaft; 6: Linear bearing; 7: Spring; 8: Bottom mold. Detailed Implementation

[0057] To better explain and facilitate understanding of this utility model, the present utility model will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0058] Example 1

[0059] like Figures 1-3 As shown: This embodiment discloses a top plate bottom formwork removal assistance device, including: base 1, telescopic electric cylinder assembly, connecting assembly and electromagnet 4.

[0060] Specifically, the telescopic electric cylinder assembly is fixedly mounted on the base 1; the connecting component is disposed on the top of the telescopic electric cylinder assembly. The electromagnet 4 is connected to the connecting component and is floatingly disposed on the top of the telescopic electric cylinder assembly by means of the connecting component. When energized, the electromagnet 4 can adhere to the lower surface of the top plate bottom mold; when energized, the telescopic electric cylinder assembly can drive the electromagnet 4 to rise or fall, thereby assisting in lifting the top plate bottom mold 8 when removing it.

[0061] The top and bottom formwork 8 removal assist device provided in this embodiment has a simple and lightweight structure, can be manually moved, and is suitable for scenarios with narrow spaces. During the removal of the bottom formwork 8, the lifting state can support the bottom formwork 8, and the retracting state has an adsorption force to lower the bottom formwork 8 to a preset height, making it easy for workers to move it away.

[0062] The telescopic electric cylinder assembly described in this embodiment includes: a three-stage telescopic electric cylinder 2, a control switch mechanism, and a power supply assembly.

[0063] In detail, the three-stage telescopic electric cylinder 2, the control switch mechanism, and the power supply assembly are all mounted on the base 1. The control switch mechanism is connected to both the three-stage telescopic electric cylinder 2 and the power supply assembly, and can control the three-stage telescopic electric cylinder 2 to start or stop working; the power supply assembly can provide electrical energy to the three-stage telescopic electric cylinder 2.

[0064] In this embodiment, the electromagnet 4 is connected to the control switch mechanism via a power supply line; the power supply component can provide electrical energy to the electromagnet 1; and the control switch mechanism can control the electromagnet 4 to be energized or de-energized.

[0065] In practical applications, while the worker controls the switch mechanism to energize the electromagnet 4, he can also activate the three-stage telescopic electric cylinder 2 to extend and lift the bottom mold 8 that is attracted by the electromagnet 4. This is not only safe and reliable, but also simple to operate and saves time and effort.

[0066] Specifically, the three-stage telescopic electric cylinder 2 includes a drive motor, a three-stage telescopic sleeve mechanism, and a transmission mechanism. The three-stage telescopic sleeve mechanism, the drive motor, and the transmission mechanism are all mounted on the base 1.

[0067] The drive motor is driven and connected to the transmission mechanism; the transmission mechanism is located inside the three-stage telescopic sleeve mechanism and is driven and connected to the three-stage telescopic sleeve mechanism; the drive motor is also connected to the control switch mechanism.

[0068] In practical applications, the motor is activated by a control switch mechanism to extend the three-stage telescopic electric cylinder 2, and the electromagnet 4 is activated, causing it to adhere to the lower surface of the bottom mold 8. Figure 2 As shown: The worker removes the bolts, and then controls the drive motor to reverse so that the three-stage telescopic electric cylinder 2 retracts. Under the attraction of the electromagnet 4, the top plate bottom mold 8 descends with the three-stage telescopic electric cylinder 2 and falls to the preset height. The electromagnet 4 is then turned off, and the worker can remove the top plate bottom mold 8.

[0069] The connecting assembly in this embodiment includes: a connecting seat 3, a linear bearing 6, a guide shaft 5, and a spring 7. The connecting seat 3 is fixedly mounted on the piston rod end of the three-stage telescopic electric cylinder 2; the linear bearing 6 is fixedly mounted on the connecting seat 3. The guide shaft 5 is mounted on the connecting seat 3 via the linear bearing 6; the electromagnet 4 is connected to the guide shaft 5 and, via the guide shaft 5, to the connecting seat 3. The spring 7 is disposed on the guide shaft 5 between the electromagnet 4 and the connecting seat 3; the electromagnet 4 is floatingly mounted on the connecting seat 3 via the guide shaft 5 and the spring 7.

[0070] Here is as Figure 1As shown: The three-stage telescopic electric cylinder 2 is installed on the base 1. The piston rod end of the three-stage telescopic electric cylinder 2 is fixed to the connecting seat 3. The connecting seat 3 is equipped with a linear bearing 6. The electromagnet 4 is connected to the connecting seat 3 through the guide shaft 5. A spring 7 is provided in the middle, so that the electromagnet 4 has a floating function and can better adsorb the top plate bottom mold 8.

[0071] In this embodiment, the electromagnet 4 has a rectangular structure; the top of the connecting seat 3 corresponds to the bottom of the electromagnet 4 and has a rectangular top surface structure; the four corners of the rectangular top surface structure are provided with mounting holes.

[0072] Specifically, each of the mounting holes is provided with a linear bearing 6; each of the linear bearings 6 is provided with a guide shaft 5; each of the guide shafts 5 is connected to the bottom of the electromagnet 4 at a corresponding position; and each of the guide shafts 5 is provided with a spring 7.

[0073] In this embodiment, the base 1 includes: a main structure and at least four support leg structures; the main structure is a platform formed by a metal frame; the support leg structures are arranged at the four corners of the platform and are integrally formed with the platform; the telescopic electric cylinder assembly is detachably fixed on the platform.

[0074] It should be noted that each of the aforementioned support leg structures has a fixing hole at its bottom; the base can be fixed to the indoor floor by means of the fixing hole and the limiting bolt.

[0075] Therefore, the top slab bottom formwork removal assist device provided in this embodiment can eliminate the need for manual support of the formwork, reduce labor intensity, and eliminate safety hazards.

[0076] Example 2

[0077] The top slab bottom formwork removal assist device disclosed in this embodiment, such as Figures 1-3 As shown, the assembly mainly includes a base 1, a telescopic electric cylinder assembly, a connecting assembly, and an electromagnet 4. The telescopic electric cylinder assembly is fixedly mounted on the base 1, with a connecting assembly 3 installed on its top. The electromagnet 4 is connected to the connecting assembly 3 and floats on top of the telescopic electric cylinder assembly with the help of the connecting assembly 3. When energized, the electromagnet 4 can adhere to the lower surface of the top plate bottom mold 8, and when energized, the telescopic electric cylinder assembly 2 can drive the electromagnet 4 to rise or fall, thus providing lifting assistance when removing the top plate bottom mold 8.

[0078] The base 1 comprises a main structure and at least four support legs. The main structure is a platform constructed of a metal frame, ensuring sufficient strength and stability to support the weight of the entire device and the loads it bears during operation. The support legs are located at the four corners of the platform and are integrally formed with it, further enhancing the overall integrity and reliability of the base. The telescopic electric cylinder assembly is detachably fixed to the platform, facilitating the installation, maintenance, and disassembly of the device.

[0079] It should be noted that each of the aforementioned support legs has fixing holes at its bottom. In practical applications, the base can be fixed to the indoor floor using these fixing holes and limiting bolts, making the device more stable during operation, preventing displacement, and ensuring construction safety.

[0080] Structure and function of telescopic electric cylinder assembly

[0081] In this embodiment, the telescopic electric cylinder assembly includes a three-stage telescopic electric cylinder 2, a control switch mechanism, and a power supply component. The three-stage telescopic electric cylinder 2, the control switch mechanism, and the power supply component are all mounted on the platform of the base 1. The control switch mechanism is connected to both the three-stage telescopic electric cylinder 2 and the power supply component, allowing the three-stage telescopic electric cylinder 2 to start or stop operating. The power supply component provides electrical energy to the three-stage telescopic electric cylinder 2, ensuring its normal operation.

[0082] Furthermore, the three-stage telescopic electric cylinder 2 includes a drive motor, a three-stage telescopic sleeve mechanism, and a transmission mechanism. The three-stage telescopic sleeve mechanism, drive motor, and transmission mechanism are all mounted on the base 1. The drive motor is connected to the transmission mechanism, which is located within and connected to the three-stage telescopic sleeve mechanism. The drive motor is also connected to a control switch mechanism.

[0083] In actual operation, workers activate the drive motor via a control switch mechanism. The drive motor then drives the transmission mechanism, causing the three-stage telescopic sleeve mechanism to extend, thus extending the three-stage telescopic electric cylinder 2. When retraction is required, the drive motor is reversed, and the three-stage telescopic sleeve mechanism retracts. This three-stage telescopic structure provides a large stroke to meet the dismantling needs of the top plate bottom mold 8 at different heights.

[0084] Connection and control of electromagnets

[0085] Electromagnet 4 is connected to the control switch mechanism via a power supply line. The power supply component provides electrical energy to electromagnet 4, and the control switch mechanism can also control the energization or de-energization of electromagnet 4. When the worker needs electromagnet 4 to attract the bottom mold 8 of the top plate, the control switch mechanism is used to energize it, and electromagnet 4 generates magnetism and attracts to the lower surface of the bottom mold 8. When the bottom mold 8 falls to the preset height, the power supply to electromagnet 4 is turned off, causing it to lose its magnetism, and the worker can then remove the bottom mold 8.

[0086] Detailed structure of the connecting components

[0087] The connecting assembly includes a connecting seat 3, a linear bearing 6, a guide shaft 5, and a spring 7. The connecting seat 3 is fixedly mounted on the end of the piston rod of the three-stage telescopic electric cylinder 2, and the linear bearing 6 is fixedly mounted on the connecting seat 3. The guide shaft 5 is mounted on the connecting seat 3 by means of the linear bearing 6, and the electromagnet 4 is connected to the guide shaft 5 and connected to the connecting seat 6 by means of the guide shaft 5. The spring 7 is disposed on the guide shaft 5 between the electromagnet 4 and the connecting seat 3, so that the electromagnet 4 is floatingly mounted on the connecting seat 3 by means of the guide shaft 5 and the spring 7.

[0088] like Figure 1 As shown, the three-stage telescopic electric cylinder 2 is mounted on the base 1, and its piston rod end is fixed to the connecting seat 3. A linear bearing 6 is installed on the connecting seat 3. The electromagnet 4 is connected to the connecting seat 3 through the guide shaft 5, and a spring 7 is provided in the middle. This structural design enables the electromagnet 4 to have a floating function, which can better adapt to the surface conditions of the top plate bottom mold 8, ensure that the electromagnet 4 is in close contact with the lower surface of the bottom mold, and improve the adsorption effect.

[0089] Specifically, the electromagnet 4 has a rectangular structure, and the top of the connecting base 3 corresponds to the bottom of the electromagnet 4, forming a rectangular top surface. Each of the four corners of the rectangular top surface has mounting holes. Each mounting hole houses a linear bearing 6, and each linear bearing 6 has a corresponding guide shaft 5 mounted on it. Each guide shaft 5 is connected to a corresponding position on the bottom of the electromagnet 4, and each guide shaft 5 has a spring 7 mounted on it. This symmetrical structural design ensures the balance and stability of the electromagnet 4 during its floating process.

[0090] Workflow

[0091] In practical applications, the working process of the top slab bottom formwork removal assist device is as follows:

[0092] First, move the device under the bottom formwork 8 of the top plate to be removed, and fix the base to the floor through the fixing holes and limit bolts at the bottom of the base support leg structure to ensure the stability of the device.

[0093] Then, the worker activates the three-stage telescopic electric cylinder 2 via a control switch mechanism, causing it to extend. Simultaneously, this energizes the electromagnet 4, which then adheres to the lower surface of the top plate mold 8. Figure 2 As shown.

[0094] Next, the workers removed the bolts that secured the bottom formwork 8 of the top slab.

[0095] Then, the drive motor is reversed, causing the three-stage telescopic electric cylinder 2 to retract. Under the attraction of the electromagnet 4, the top plate bottom mold 8 descends with the three-stage telescopic electric cylinder 2 and falls to the preset height.

[0096] Finally, turn off the power to electromagnet 4. Electromagnet 4 will lose its magnetism, and the worker can then remove the top plate bottom mold 8.

[0097] The technical principles of this utility model have been described above with reference to specific embodiments. These descriptions are merely for explaining the principles of this utility model and should not be construed as limiting the scope of protection of this utility model in any way. Based on this explanation, those skilled in the art can conceive of other specific embodiments of this utility model without creative effort, and these embodiments will all fall within the scope of protection of this utility model.

Claims

1. A device for assisting in the removal of top slab bottom formwork, characterized in that, include: Base, telescopic electric cylinder assembly, connecting assembly, and electromagnet; The telescopic electric cylinder assembly is fixedly mounted on the base; The connecting component is disposed on the top of the telescopic electric cylinder assembly; The electromagnet is connected to the connecting assembly and is floatingly mounted on top of the telescopic electric cylinder assembly by means of the connecting assembly; When energized, the electromagnet can be attracted to the lower surface of the top plate low mold; When energized, the telescopic electric cylinder assembly can drive the electromagnet to lift or lower, thereby assisting in lifting the top plate bottom mold during the removal of the top plate bottom mold.

2. The top slab bottom formwork removal assist device according to claim 1, characterized in that, The telescopic electric cylinder assembly includes: a three-stage telescopic electric cylinder, a control switch mechanism, and a power supply assembly; The three-stage telescopic electric cylinder, the control switch mechanism, and the power supply assembly are all mounted on the base. The control switch mechanism is connected to the three-stage telescopic electric cylinder and the power supply assembly respectively, and can control the three-stage telescopic electric cylinder to start or stop working; The power supply component can provide electrical energy to the three-stage telescopic electric cylinder.

3. The top slab bottom formwork removal assist device according to claim 2, characterized in that, The electromagnet is connected to the control switch mechanism via a power supply line; The power supply component can provide electrical energy to the electromagnet; The control switch mechanism can control the electromagnet to be energized or de-energized.

4. The top slab bottom formwork removal assist device according to claim 2, characterized in that, The three-stage telescopic electric cylinder includes: a drive motor, a three-stage telescopic sleeve mechanism, and a transmission mechanism; The three-stage telescopic sleeve mechanism, the drive motor, and the transmission mechanism are all mounted on the base. The drive motor is connected to the transmission mechanism in a driving manner; The transmission mechanism is disposed within the three-stage telescopic sleeve mechanism and is connected to the three-stage telescopic sleeve mechanism in a transmission manner; The drive motor is also connected to the control switch mechanism.

5. The top slab bottom formwork removal assist device according to claim 2, characterized in that, The connecting assembly includes: a connecting seat, a linear bearing, a guide shaft, and a spring; The connecting seat is fixedly installed at the end of the piston rod of the three-stage telescopic electric cylinder; The linear bearing is fixedly mounted on the connecting seat; The guide shaft is mounted on the connecting seat by means of the linear bearing; The electromagnet is connected to the guide shaft and is connected to the connecting seat by means of the guide shaft; The spring is disposed on the guide shaft between the electromagnet and the connecting seat; The electromagnet is floatingly mounted on the connecting seat by means of the guide shaft and the spring.

6. The top slab bottom formwork removal assist device according to claim 5, characterized in that, The electromagnet has a rectangular structure; The top of the connecting seat and the bottom of the electromagnet have a rectangular top surface structure. The rectangular top surface structure is provided with mounting holes at all four corners; Each of the aforementioned mounting holes contains a corresponding linear bearing; Each of the linear bearings is equipped with a corresponding guide shaft; Each of the aforementioned guide shafts is connected to a corresponding position at the bottom of the electromagnet; Each of the aforementioned guide shafts is provided with the aforementioned spring.

7. The top slab bottom formwork removal assist device according to claim 1, characterized in that, The base includes: a main structure and at least four support leg structures; The platform is composed of the main structure's metal frame; The outrigger structure is arranged at the four corners of the platform and is integrally formed with the platform. The telescopic electric cylinder assembly is detachably fixed to the platform.

8. The top slab bottom formwork removal assist device according to claim 7, characterized in that, Each of the aforementioned support leg structures has a fixing hole at its bottom; The base can be fixed to the indoor floor by means of the fixing holes and limiting bolts.