A device for lifting a subsided concrete floor
By combining hydraulic jacks and reaction frame devices, the problems of long construction period, high cost and poor controllability in the repair of subsided concrete floors are solved, and efficient and environmentally friendly lifting and uniform repair of subsided concrete floors are achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HENAN DANNATEQI FOUNDATION ENG CO LTD
- Filing Date
- 2025-08-13
- Publication Date
- 2026-07-24
AI Technical Summary
Existing technologies for repairing subsided concrete floors suffer from problems such as long construction cycles, high costs, poor controllability, and insufficient environmental protection. In particular, traditional demolition and reconstruction methods result in construction waste and uneven repair.
Hydraulic jacks and reaction frame devices are used. The hydraulic jacks push the lifting column to raise the subsided concrete floor. A level and adjusting feet are used to ensure the uniformity and accuracy of the lifting process. The lifting height is monitored by a control unit, and the adjustable feet can adapt to differences in ground height.
It achieves efficient and environmentally friendly lifting of subsided concrete floors, ensuring accuracy and uniformity in the construction process, reducing construction waste, shortening the construction cycle, and lowering costs.
Smart Images
Figure CN224549219U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of building construction equipment technology, and in particular to a reaction frame device for lifting subsided concrete floors. Background Technology
[0002] In various construction projects, concrete floors often experience subsidence due to long-term exposure to various loads and uneven settlement of the foundation. Currently, there are numerous methods for repairing subsided concrete floors, but all have certain limitations. The traditional method of removing the original concrete floor and its underlying subbase, then repaving the subbase and pouring new concrete not only fails to fundamentally solve the problem of post-construction settlement control but also generates a large amount of construction waste, making it neither energy-efficient nor environmentally friendly. Removing the concrete floor and its underlying subbase, reinforcing the foundation using composite foundation methods such as mixing piles or jet grouting piles, and then rebuilding the floor presents problems such as high cost and long construction periods. Other repair techniques, such as injecting expansion materials or using grouting to create lifting force, can achieve non-disruptive and uninterrupted repair, but suffer from poor controllability; the repaired concrete floor is difficult to lift and may tilt during lifting. Utility Model Content
[0003] To improve the efficiency of repairing subsided concrete floors, this application provides a subsided concrete floor lifting reaction frame device.
[0004] This application provides a reaction frame device for lifting subsided concrete floors, employing the following technical solution: It includes a hydraulic jack, a hydraulic pump station connected to the hydraulic jack, and a control unit for controlling the hydraulic pump station. The hydraulic jack is fixed to one end of the reaction frame, and the end of the reaction frame away from the hydraulic jack is bolted to the concrete floor to be repaired. A lifting column is connected to the output end of the hydraulic jack. A through hole is provided on the concrete floor to be repaired for the lifting column to pass through. The output end of the hydraulic jack faces the through hole. When the hydraulic jack pushes the lifting column through the through hole and continues to move, the concrete floor to be repaired is lifted under the reverse thrust of the lifting column. A displacement sensor on the hydraulic jack is electrically connected to the control unit.
[0005] Optionally, the reaction frame includes two identical frames, which are rectangular ring structures, and the two frames are arranged perpendicularly, with the hydraulic jack located at the intersection of the two frames.
[0006] Optionally, the reaction frame is provided with a groove, a level is provided in the middle of the groove, a placement compartment is provided at one end of the groove and a storage compartment is provided at the other end, a rotating shaft is provided in the placement compartment and a placement plate is provided on the rotating shaft, a short shaft is provided in the storage compartment and a storage plate is provided on the short shaft, and a shielding strip is provided on the placement plate extending from the level to the storage plate.
[0007] Optionally, the placement compartment and the storage compartment are symmetrically arranged about a horizontal ruler. A torsion spring is provided at the end of the rotating shaft, and one end of the short shaft extends to the outside of the storage compartment and is provided with a rotating handle. A positioning rod is provided on the rotating handle, and a positioning hole is provided on the reaction frame to cooperate with the positioning rod.
[0008] Optionally, the reaction frame is provided with adjusting feet at all four corners. Each adjusting foot includes a fixed rod fixed to the reaction frame. A fixed end is slidably connected inside the fixed rod. A spring is provided between the fixed rod and the fixed end. A fixed ring is provided on the fixed rod, forming a structure in which a screw passes through the fixed ring and presses against the fixed end, thus fixing the length of the adjusting foot. A round hole is provided on the fixed end for an expansion bolt to pass through.
[0009] In summary, this application includes the following beneficial technical effects: 1. A reaction frame is installed to lift the concrete floor to be repaired. A hydraulic jack is installed inside the reaction frame. The output end of the hydraulic jack is equipped with a lifting column that can pass through the concrete floor to be repaired and extend to the foundation. Under the action of the hydraulic pump station and control unit, the concrete floor to be repaired is lifted. A displacement sensor electrically connected to the control unit is installed on the hydraulic jack to monitor the height to which the concrete floor to be repaired is lifted. 2. The reaction frame features a groove for a spirit level and a replaceable shielding strip. The spirit level ensures the reaction frame is level, guaranteeing the concrete floor to be repaired remains on the same horizontal plane and experiences uniform force during lifting, preventing localized excessively high or low lifting. The shielding strip protects the spirit level from external light, dust, and other factors, ensuring accurate readings. A torsion spring is installed at the end of the shaft connecting the placement tray in the placement compartment, and a rotating handle is installed at the end of the short shaft connecting the storage tray in the storage compartment. The shielding strip is easily retracted and extended with the cooperation of the positioning rod and positioning hole. 3. The adjustable feet set at the four corners of the reaction frame include a fixed rod, a fixed end, a spring, and a fixed ring. When facing ground with different flatness, the position of the fixed end inside the fixed rod can be adjusted to adapt to the difference in ground height by utilizing the elasticity of the spring. Then, the length of the adjustable foot is fixed by pressing the fixed end through the fixed ring with a screw. Attached Figure Description
[0010] Figure 1 This is a structural diagram of a reaction frame device for lifting subsided concrete floors according to this application; Figure 2 This is an enlarged view of section A of the structural diagram of the reaction frame device for lifting a subsided concrete floor, as described in this application. Figure 3 This is a structural diagram of the groove of a reaction frame device for lifting a subsided concrete floor, as described in this application. Figure 4 This is a structural diagram of the adjusting foot of a reaction frame device for lifting subsided concrete floors, as described in this application. Figure 5 This is a top view of a reaction frame device for lifting subsided concrete floors according to this application.
[0011] Attached reference numerals: 1 Hydraulic jack, 2 Reaction frame, 3 Concrete floor to be repaired, 4 Lifting column, 5 Frame, 7 Level, 8 Placement compartment, 9 Storage compartment, 10 Rotating shaft, 11 Placement tray, 12 Short shaft, 13 Storage tray, 14 Covering strip, 15 Rotating handle, 17 Positioning hole, 18 Fixing rod, 19 Fixing end, 20 Spring, 21 Fixing ring, 22 Round hole. Detailed Implementation
[0012] The following is in conjunction with the appendix Figure 1-5 This application will be described in further detail.
[0013] This application discloses a device for a reaction frame 2 to lift a subsided concrete floor. For example... Figure 1 and 5 As shown, the system includes a hydraulic jack 1, a hydraulic pump station connected to the hydraulic jack 1, and a control unit for controlling the hydraulic pump station. The hydraulic jack 1 is fixed to one end of a reaction frame 2. The reaction frame 2 includes two identical frames 5, which are rectangular ring structures and are vertically arranged. The hydraulic jack 1 is located at the intersection of the two frames 5 and is fixed by bolts. The end of the reaction frame 2 away from the hydraulic jack 1 is bolted to the concrete floor 3 to be repaired. The output end of the hydraulic jack 1 is connected to a lifting column 4 via a flange. The end of the reaction frame 2 away from the hydraulic jack 1 has a central hole for the lifting column 4 to pass through. A through hole for the lifting column 4 to pass through is provided on the concrete floor 3 to be repaired. The output end of the hydraulic jack 1 faces the through hole. When the hydraulic jack 1 pushes the lifting column 4 through the through hole and continues to move, the concrete floor 3 to be repaired is lifted under the reverse thrust of the lifting column 4. A displacement sensor on the hydraulic jack 1 is electrically connected to the control unit.
[0014] In one embodiment, according to the appendix Figure 2 and 3As shown, the reaction frame 2 has a groove, and a level 7 is screwed into the middle of the groove. The level 7 is prior art. A placement compartment 8 is screwed into one end of the groove, and a storage compartment is screwed into the other end. A rotating shaft 10 is rotatably connected inside the placement compartment 8, and a placement tray 11 is keyed to the rotating shaft 10. The placement tray 11 is prior art. A short shaft 12 is rotatably connected inside the storage compartment, and a storage tray 13 is keyed to the short shaft 12. The storage tray 13 is prior art. A shielding strip 14 extends from the surface of the level 7 to the storage tray 13 on the placement tray 11. The placement compartment 8 and the storage compartment are symmetrically arranged about the level 7. A torsion spring is provided at the end of the rotating shaft 10. The torsion spring is prior art. One end of the short shaft 12 extends to the outside of the storage compartment and is hinged to a rotating handle 15. A positioning rod is screwed onto the rotating handle 15. The reaction frame 2 has a positioning hole 17 that cooperates with the positioning rod.
[0015] In one embodiment, according to the appendix Figure 1 and 4 As shown, the reaction frame 2 has adjustable feet at all four corners. Each adjustable foot includes a fixed rod 18 fixed to the reaction frame 2 by screws. The fixed rod 18 has a hollow structure. A fixed end 19 is slidably connected inside the fixed rod 18. The fixed end 19 has an "L" shape and a vertical groove inside. A spring 20 with its other end extending to the fixed rod 18 is provided at the bottom of the vertical groove. Multiple fixed rings 21 are provided on the fixed rod 18 and are evenly spaced along the length of the fixed rod 18. This forms a structure in which the screw passes through the fixed ring 21 and presses against the fixed end 19, thus fixing the length of the adjustable foot. The fixed end 19 has a round hole 22 for the expansion bolt to pass through.
[0016] The implementation principle of the reaction frame 2 device for lifting subsided concrete floor in this embodiment is as follows: The adjusting feet of the reaction frame 2 are fixed to appropriate positions around the concrete floor 3 to be repaired using expansion bolts. The length of the adjusting feet is adjusted according to the ground conditions to ensure that the reaction frame 2 is in a horizontal state, and the level is checked using a level gauge 7 on the reaction frame 2. The hydraulic jack 1 is fixedly installed at the designated end position of the reaction frame 2; the lifting column 4 is connected to the output end of the hydraulic jack 1; the hydraulic pump station is connected to the hydraulic jack 1 through an oil pipe; and the control unit is electrically connected to the hydraulic pump station and the displacement sensor on the hydraulic jack 1. The control unit is activated, sending a command to start the hydraulic pump station. The hydraulic pump station begins operation, supplying hydraulic oil to hydraulic jack 1. Under the action of the hydraulic oil, hydraulic jack 1 pushes the lifting column 4 upward. The lifting column 4 passes through the through hole in the concrete floor 3 to be repaired. As the lifting column 4 rises, it generates an upward thrust on the concrete floor 3, gradually lifting the subsided concrete floor. During the lifting process, a displacement sensor monitors the lifting displacement of hydraulic jack 1 in real time and feeds the data back to the control unit.
[0017] The contaminated shielding strip 14 can be moved into the storage compartment by rotating the rotating handle 15 as needed to avoid external factors interfering with the reading of the level ruler 7. The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.
Claims
1. A reaction frame device for lifting subsided concrete floors, comprising a hydraulic jack (1), a hydraulic pump station connected to the hydraulic jack (1), and a control unit for controlling the hydraulic pump station, characterized in that: A hydraulic jack (1) is fixed to one end of a reaction frame (2). The end of the reaction frame (2) away from the hydraulic jack (1) is bolted to the concrete floor (3) to be repaired. A lifting column (4) is connected to the output end of the hydraulic jack (1). A through hole for the lifting column (4) to pass through is provided on the concrete floor (3) to be repaired. The output end of the hydraulic jack (1) is set towards the through hole. When the hydraulic jack (1) pushes the lifting column (4) through the through hole and continues to move, the concrete floor (3) to be repaired is lifted under the reverse thrust of the lifting column (4). The displacement sensor on the hydraulic jack (1) is electrically connected to the control unit.
2. The reaction frame device for lifting subsided concrete floor as described in claim 1, characterized in that: The reaction frame (2) includes two identical frames (5), which are rectangular ring structures. The two frames (5) are arranged vertically, and the hydraulic jack (1) is located at the intersection of the two frames (5).
3. The reaction frame device for lifting subsided concrete floor as described in claim 1, characterized in that: The reaction frame (2) is provided with a groove, and a level (7) is provided in the middle of the groove. A placement compartment (8) is provided at one end of the groove and a storage compartment is provided at the other end. A rotating shaft (10) is provided in the placement compartment (8), and a placement plate (11) is provided on the rotating shaft (10). A short shaft (12) is provided in the storage compartment, and a storage plate (13) is provided on the short shaft (12). A shielding strip (14) is provided on the placement plate (11) extending from the level (7) to the storage plate (13).
4. The reaction frame device for lifting subsided concrete floors according to claim 3, characterized in that: The placement compartment (8) and the storage compartment are symmetrically arranged about the horizontal ruler (7). A torsion spring is provided at the end of the rotating shaft (10). One end of the short shaft (12) extends to the outside of the storage compartment and is provided with a rotating handle (15). A positioning rod is provided on the rotating handle (15). A positioning hole (17) is provided on the reaction frame (2) to cooperate with the positioning rod.
5. The reaction frame device for lifting subsided concrete floor as described in claim 1, characterized in that: The reaction frame (2) is provided with adjustable feet at all four corners. Each adjustable foot includes a fixed rod (18) fixed on the reaction frame (2). A fixed end (19) is slidably connected inside the fixed rod (18). A spring (20) is provided between the fixed rod (18) and the fixed end (19). A fixed ring (21) is provided on the fixed rod (18), forming a structure in which a screw passes through the fixed ring (21) and presses the fixed end (19), thus fixing the length of the adjustable foot. A round hole (22) for the expansion bolt to pass through is provided on the fixed end (19).