Reverse jacking adjusting device for floor load overrun
By designing a counter-jacking adjustment device for the support components, base, and jack, the problem of controlling the counter-jacking force in traditional counter-jacking supports was solved, achieving precise adjustment of the counter-jacking force and safe and reliable construction results, while reducing construction costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- NO 1 CONSTR ENG CO LTD OF CHINA CONSTR THIRD ENG BUREAU CO LTD
- Filing Date
- 2025-04-09
- Publication Date
- 2026-04-17
AI Technical Summary
Traditional anti-top support is difficult to install and remove, the support is difficult to tighten with the structure, the anti-top force cannot be controlled, which makes the concrete prone to cracking and poses a safety risk.
Design a counter-jacking adjustment device that includes a support component, a base, and a jack. The support component can be precisely adjusted and fixed through the limiting channel of the base and the jack, ensuring that the counter-jacking force is controllable.
It achieves controllable and adjustable anti-jacking force, avoids deviation during jacking, reduces construction risks, saves manpower and material resources, and reduces project costs.
Smart Images
Figure CN224134249U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of building construction technology, specifically relating to a top-mounted adjustment device for floor slabs with excessive load. Background Technology
[0002] With the development of the construction industry, construction processes often employ temporary supports and mobile machinery to access floor slabs. During construction, the floor slab load often far exceeds the design load. To ensure structural safety and prevent concrete cracking, full-span scaffolding and reverse-top supports are commonly used to reinforce the structure. However, traditional reverse-top supports are difficult to install and remove, and it is difficult to ensure that the supports are firmly anchored to the structure. The reverse-top force is uncontrollable, which can easily lead to concrete cracking and pose safety risks. Utility Model Content
[0003] To address the shortcomings of existing technologies, this utility model provides a counter-jacking adjustment device for floor slabs with excessive loads, solving the problem that the counter-jacking force cannot be controlled by traditional counter-jacking measures.
[0004] To achieve the above objectives, this utility model provides the following technical solution: a counter-jacking adjustment device for floor slab overload, comprising: a support member, a base, and a jack; the lower end of the support member extends into the base, and ear plates are fixed to at least two opposite sides of the support member; the base surrounds the lower end of the support member, and the side wall of the base is provided with a limiting channel for the vertical movement of the ear plates; the lower end of the ear plates extends into the limiting channel; and a jack is provided at the lower end of each ear plate.
[0005] Furthermore, the base includes a base plate and a plurality of arc-shaped limiting plates fixed at intervals on the upper part of the base plate; the axes of the plurality of arc-shaped limiting plates coincide and are perpendicular to the base plate; adjacent arc-shaped limiting plates maintain a distance to form the limiting channel; the plurality of arc-shaped limiting plates surround the support member.
[0006] Furthermore, the plurality of the arc-shaped limiting plates enclose a cylindrical space, and the lower end of the support member is inserted into the cylindrical space.
[0007] Furthermore, the lower end of the arc-shaped limiting plate is welded and fixed to the base plate.
[0008] Furthermore, the ear plate is welded and fixed to the support member.
[0009] Furthermore, the support member is a vertically installed steel pipe.
[0010] Furthermore, the side wall of the support member or the ear plate is provided with scale lines.
[0011] The beneficial effects of this utility model are as follows: the base provides support and limits the support component, and the jack allows for height adjustment of the support component. Thus, when the support component and the base are supported between the floor slab, the counter-jacking force is controllable and adjustable. The limiting channel guides the lifting of the support component, preventing deviation during the lifting process, resulting in good counter-jacking support. The support component is inserted into the base, making installation convenient and reusable, reducing the waste of manpower and material resources and saving project costs. Attached Figure Description
[0012] Figure 1 This is a schematic diagram of the structure of the anti-top adjustment device for floor slab overload according to this utility model;
[0013] Figure 2 for Figure 1 A schematic diagram of the side view structure;
[0014] Figure 3 for Figure 1 A schematic diagram of the cross-sectional structure of the support components and the base.
[0015] In the diagram: 1-Support component; 2-Arc-shaped limiting plate; 3-Jack; 4-Ear plate; 5-Base plate. Detailed Implementation
[0016] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.
[0017] like Figures 1-3 The anti-jacking adjustment device shown includes: support 1, base and jack 3.
[0018] The lower end of the support member 1 extends into the base, and ear plates 4 are fixed on opposite sides of the support member 1 respectively; the base surrounds the lower end of the support member 1, and the side wall of the base is provided with a limiting channel for the vertical movement of the ear plates 4; the lower end of the ear plates 4 extends into the limiting channel; and a jack 3 is provided at the lower end of each ear plate 4.
[0019] The base includes a horizontal base plate 5 and two arc-shaped limiting plates 2 welded to the upper end of the base plate 5. The two arc-shaped limiting plates 2 enclose a cylindrical space. Both the arc-shaped limiting plates 2 and the base are made of steel plate structure. The support member 1 is made of steel pipe, with the lower end of the steel pipe inserted into the cylindrical space. The axis of the cylindrical space coincides with the axis of the steel pipe. Ear plates 4 are welded and fixed to the side wall of the steel pipe. A gap is maintained between the two arc-shaped limiting plates 2, which is the limiting channel. Thus, the ear plates 4 on the side wall of the steel pipe are exactly within the limiting channel, that is, the ear plates 4 are located between the two arc-shaped limiting plates 2. The arc-shaped limiting plates 2 provide lateral support and limitation for the ear plates 4, guiding the ear plates 4 to move vertically. In some embodiments, scale lines are provided on the surface of the ear plates 4. An indicator is provided on the arc-shaped limiting plate 2. The indicator can be located on the upper end surface of the arc-shaped limiting plate 2. The lifting height of the ear plate 4 can be determined based on the change in the scale line before and after the upper end surface of the arc-shaped limiting plate 2 and the ear plate 4 before and after lifting, so as to achieve precise control of the counter-lifting force.
[0020] During construction, first weld the ear plate 4 to the steel pipe, place the jack 3 below the ear plate 4, and adjust the jack 3 to tighten the steel pipe against the upper floor slab. After adjusting the anti-jacking height and anti-jacking force to the target value using the jack 3, bring the two arc-shaped limiting plates 2 of the base together on both sides of the steel pipe. The lower ends of the two arc-shaped limiting plates 2 are then pressed against the base plate 5 and welded. Finally, weld the two arc-shaped limiting plates 2 of the base to the steel pipe to fix them in place, thus securing the anti-jacking mechanism. When dismantling is required, cut the welded joint between the limiting arc-shaped plates and the base plate 5 to disassemble the base into the arc-shaped limiting plates 2 and the base plate 5 for future use.
[0021] The above are merely preferred embodiments of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are within its protection scope. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within its protection scope.
Claims
1. A counter-jacking device for floor load overruns, characterised in that, include: The support includes a support member, a base, and a jack. The lower end of the support member extends into the base, and ear plates are fixed to at least two opposite sides of the support member. The base surrounds the lower end of the support member, and the side wall of the base is provided with a limiting channel for the vertical movement of the ear plates. The lower end of each ear plate extends into the limiting channel. Each ear plate has a jack at its lower end.
2. The counter-jacking device for floor load overrunning according to claim 1, characterized in that, The base includes a base plate and a plurality of arc-shaped limiting plates fixed at intervals to the upper end of the base plate; The axes of the plurality of arc-shaped limiting plates coincide and are perpendicular to the base plate; adjacent arc-shaped limiting plates maintain a distance to form the limiting channel; the plurality of arc-shaped limiting plates surround the support member.
3. The counter-jacking device for floor load overrunning according to claim 2, characterized in that, Multiple arc-shaped limiting plates are arranged to form a cylindrical space, and the lower end of the support member is inserted into the cylindrical space.
4. The counter-jacking device for floor load overrunning according to claim 2, characterized in that, The lower end of the arc-shaped limiting plate is welded and fixed to the base plate.
5. The counter-jacking device for floor load overrunning according to claim 1, characterized in that, The ear plate is welded and fixed to the support member.
6. The counter-jacking device for floor load overrunning according to claim 1, characterized in that, The support component is a vertically installed steel pipe.
7. The counter-jacking device for floor load overrunning according to claim 1, characterized in that, The side wall of the support member or the ear plate is provided with scale lines.