A self-balancing oil cylinder cage system for repairing a quake-damaged building

Abstract

This invention relates to the field of building repair technology and discloses a self-balancing hydraulic cylinder cage system for repairing earthquake-damaged buildings. The system includes: a top plate with a through hole for a piston rod; a bottom plate parallel to the top plate, with symmetrically distributed inclined grooves on its back; an adjusting support assembly including four screws and matching nuts, the screws and nuts connecting the top and bottom plates and adjusting the distance between them; a rope loop fixed to the center of the bottom plate for connecting a steel wire rope; and an anchoring connection assembly including a steel wire rope and multiple expansion bolts. The steel wire rope passes through the inclined grooves and rope loop of the bottom plate, and its two ends are anchored to the structural base surface by the expansion bolts, forming a self-balancing reaction force path. This invention provides a lightweight, adjustable, safe hydraulic cylinder cage system with independent self-balancing capabilities, effectively solving problems such as difficulty in providing reaction force, poor equipment compatibility, and high construction risks in earthquake-damaged building repair.

Description

Technical Field

[0001] This invention relates to the field of building repair technology, and in particular to a self-balancing hydraulic cylinder cage system for repairing earthquake-damaged buildings. Background Technology

[0002] Earthquakes often cause the collapse of columns, wall damage, and floor subsidence or displacement of the ground floor of multi-story buildings facing the street in urban areas, while the upper floors remain structurally intact. To avoid the huge economic losses caused by the demolition of the entire building, it is necessary to repair the damaged ground floor by installing temporary vertical supports to prevent collapse; precisely shifting the supporting components to their designed positions; and using jacks to lift the floor slabs to their original elevation to achieve repair. Traditional methods rely on on-site casting of concrete reaction piers or welding of steel reaction frames to provide horizontal thrust, which suffers from problems such as long construction cycles, limited space, difficulty in reuse, and low construction efficiency. Especially in confined or damaged ground-floor spaces, the lack of reliable reaction support points becomes a technical bottleneck. Therefore, a self-balancing hydraulic cylinder cage system is urgently needed to achieve earthquake-damaged building repair. Summary of the Invention

[0003] The purpose of this invention is to provide a self-balancing hydraulic cylinder cage system for the repair of earthquake-damaged buildings, which solves the problems of traditional methods that rely on on-site pouring of concrete reaction piers or welding of steel reaction frames to provide horizontal thrust, resulting in long construction cycles, limited space, difficulty in reuse, and low construction efficiency.

[0004] This invention provides a self-balancing hydraulic cylinder cage system for the repair of earthquake-damaged buildings, comprising: The top plate is used to limit the piston rod of the jack. The top plate has a through hole in the center for the piston rod to pass through, and mounting holes are provided at the four corners of the top plate. The base plate, which is parallel to the top plate, is used to support the jack base. The base plate has mounting holes at its four corners and symmetrically distributed inclined grooves on its back. The adjustment support assembly includes four screws and matching nuts. The screws pass through the mounting holes of the top plate and the bottom plate to connect the top plate and the bottom plate and adjust the distance between the top plate and the bottom plate. A rope loop, fixed to the center of the base plate, is used to connect a steel wire rope; The anchoring connection assembly includes a steel wire rope and multiple expansion bolts. The steel wire rope passes through the inclined groove and rope loop of the base plate, and its two ends are anchored to the structural base surface by the expansion bolts to form a self-balancing reaction force path.

[0005] Preferably, the diameter of the through hole matches the specifications of the jack piston rod.

[0006] Preferably, the inclined groove is inclined at 45°, and the inclined groove cooperates with the rope ring to guide and prevent slippage of the wire rope.

[0007] Preferably, the rope loop is a metal semi-circular ring welded to the center of the base plate, and the rope loop has a diameter of 10mm and a height of 30mm.

[0008] Preferably, the screw has a diameter of 10mm and a length of 300mm, and the distance between the top and the bottom plate is adjusted by the nut to accommodate different models of jacks.

[0009] Preferably, the wire rope has a diameter of 5mm and a length of 4m, and the surface of the wire rope is coated with an anti-rust layer.

[0010] Preferably, the expansion bolt has a diameter of 10mm, a length of 80mm, and an effective anchoring depth greater than 55mm. The expansion bolt is anchored in a drilled hole in the structural base surface and is used to fix both ends of the wire rope.

[0011] Preferably, the spacing between the expansion bolts is greater than 1m and the normal between the expansion bolts coincides with the moving direction of the jack piston rod.

[0012] Compared with existing technologies, the advantages of this invention lie in its use of a cage-like structure comprised of a top plate, a bottom plate, and adjustable support components, along with anchoring connections (steel wire rope and expansion bolts), to convert the reaction force generated by the jack into the system's internal force. When the jack piston rod extends to push the upper component, the reaction force is transmitted through the bottom plate to the steel wire rope, and ultimately borne by the expansion bolts anchored to the ground in front. This design forms a complete self-balancing reaction force path of "top plate - jack - bottom plate - steel wire rope - ground anchor point." This means that there is no need to find intact surrounding walls or pour large concrete reaction piers; work can be carried out simply by drilling holes in the ground in front for anchoring, greatly improving the adaptability and flexibility of construction in severely damaged, unreliable surrounding structures, or open areas.

[0013] By incorporating an adjustable support assembly (four screws and nuts), operators can easily rotate the nuts to change the distance between the top and bottom plates. This feature allows the cage system to accommodate hydraulic jacks of different heights and models without requiring custom-made reaction frames for each jack size, significantly reducing equipment costs and improving equipment turnover and on-site commissioning efficiency. Simultaneously, the through-hole in the center of the top plate matches the piston rod specifications, ensuring precise positioning.

[0014] To address the issue of flexible wire ropes being prone to displacement under stress, this invention incorporates symmetrically distributed inclined grooves on the back of the base plate, along with metal rope loops welded to the center of the base plate. The wire rope passes through the inclined grooves and is caught in the rope loops. The inclined grooves serve a crucial guiding and anti-slip constraint function, forcing the wire rope to bear force at a predetermined angle, preventing lateral slippage or jump-out under high loads. This structure not only ensures the stability of reaction force transmission, avoiding cage twisting or jack overturning due to eccentric loading, but also effectively disperses the localized stress of the wire rope on the base plate, extending the equipment's service life and significantly improving the safety of the construction process.

[0015] The entire system comprises standardized components such as a top plate, bottom plate, bolts, and wire ropes, featuring a lightweight structure that is easy to disassemble and assemble. Combined with the rapid anchoring characteristics of expansion bolts, construction personnel can complete the system's setup and fixation in a short time. This rapid deployment capability is particularly valuable during the critical post-earthquake rescue period for promptly correcting building tilt and restoring structural stability. Furthermore, the rust-proof coating on the wire rope surface and specific dimensional optimizations (such as a 10mm rope loop diameter and 30mm height) further ensure the system's durability and reliability in complex and harsh environments. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0017] Figure 1 This is one of the structural schematic diagrams of a self-balancing hydraulic cylinder cage system for repairing earthquake-damaged buildings according to the present invention; Figure 2 This is the second structural schematic diagram of a self-balancing hydraulic cylinder cage system for repairing earthquake-damaged buildings according to the present invention; Figure 3 This is a schematic diagram of the connection between the top plate and the bottom plate in an embodiment of the present invention; Figure 4 This is a schematic diagram of the bottom of the base plate in an embodiment of the present invention; Figure 5 This is a side view of the base plate in an embodiment of the present invention; Figure 6 This is a cross-sectional view of the inclined groove in the bottom plate in an embodiment of the present invention.

[0018] In the diagram, 100 is the top plate; 110 is the through hole; 120 is the mounting hole; 200 is the bottom plate; 210 is the inclined groove; 300 is the adjusting support assembly; 310 is the screw rod; 320 is the nut; 400 is the rope ring; 500 is the anchoring connection assembly; 510 is the wire rope; 520 is the expansion bolt; 600 is the jack; and 700 is the component to be repaired. Detailed Implementation

[0019] 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, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0020] In the description of this application, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0021] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0022] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0023] like Figure 1-6 As shown, this invention provides a self-balancing hydraulic cylinder cage system for the repair of earthquake-damaged buildings, mainly used for the horizontal translation and repositioning or lifting repair of building components such as walls, beams, and columns after an earthquake. It includes: The top plate 100 is used to limit the piston rod of the jack 600. The top plate 100 has a through hole 110 in the center for the piston rod to pass through, and mounting holes 120 are provided at the four corners of the top plate 100. The base plate 200 is set parallel to the top plate 100 and is used to support the base of the jack 600. The base plate 200 has mounting holes 120 at its four corners and symmetrically distributed inclined grooves 210 on its back. The adjustment support assembly 300 includes four screws 310 and matching nuts 320. The screws 310 pass through the mounting holes 120 of the top plate 100 and the bottom plate 200 to connect the top plate 100 and the bottom plate 200 and adjust the distance between the top plate 100 and the bottom plate 200. Rope loop 400 is fixed to the center of the base plate 200 and is used to connect steel wire rope 510; The anchoring connection assembly 500 includes a steel wire rope 510 and multiple expansion bolts 520. The steel wire rope 510 passes through the inclined groove 210 and rope loop 400 of the base plate 200, and its two ends are anchored to the structural base surface by the expansion bolts 520 to form a self-balancing reaction force path.

[0024] This application utilizes a rigid frame structure of top plate 100 and bottom plate 200, along with four adjustable screws 310, to achieve flexible adaptation of the installation space for jack 600. This allows for precise adjustment of the support height based on the actual repair needs of the earthquake-damaged building. The coordinated design of rope loop 400 and inclined groove 210 results in a symmetrical angular distribution of wire rope 510. Combined with the anchoring effect of expansion bolts 520, a stable triangular force system is formed when thrust is applied. This effectively transfers the reaction force of jack 600 to the structural base, preventing secondary stress damage to the damaged building and significantly improving the safety and stability of the repair operation.

[0025] In some embodiments of this application, the diameter of the through hole 110 matches the specifications of the piston rod of the jack 600.

[0026] In some embodiments of this application, the inclined groove 210 is inclined at 45°, and the inclined groove 210 cooperates with the rope ring 400 to guide and prevent slippage of the wire rope 510.

[0027] In this embodiment, the top plate 100 is a rectangular steel plate with a circular through hole 110 in its center. The diameter of the through hole 110 is designed to match the outer diameter of the piston rod of the selected hydraulic jack 600 (for example, if the piston rod diameter is 68mm, the diameter of the through hole 110 is set to 70mm to leave an appropriate gap), which is used to limit and guide the piston rod to pass vertically. Mounting holes 120 are respectively provided at the four corners of the top plate 100 for connecting the adjusting support assembly 300. The main function of the top plate 100 is to serve as the top support surface for the jack piston rod, transmitting the thrust of the extended piston rod to the component 700 to be repaired above (such as a square steel support beam).

[0028] The base plate 200 is parallel to the top plate 100 and is also a rectangular steel plate with dimensions compatible with the top plate 100. The upper surface of the base plate 200 is used to support the base of the hydraulic jack 600, ensuring that the jack is stable and does not slip under pressure. The four corners of the base plate 200 also have mounting holes 120 corresponding to the mounting holes 120 in the top plate 100.

[0029] Two inclined grooves 210 are symmetrically arranged on the back side of the base plate 200 (i.e., the side facing away from the jack base). In this embodiment, the inclined grooves 210 are opened at a 45° angle and extend from the edge of the base plate 200 towards the center. The function of the inclined grooves 210 is to guide the steel wire rope 510 passing through it, limit its lateral displacement, and provide anti-slip restraint.

[0030] In some embodiments of this application, the screw 310 has a diameter of 10 mm and a length of 300 mm, and the distance between the top and the base plate 200 is adjusted by the nut 320 to accommodate different models of jacks.

[0031] In this embodiment, the adjusting support assembly 300 includes four high-strength screws 310 and matching double nuts 320. The four screws 310 pass through the mounting holes 120 at the four corners of the top plate 100 and the bottom plate 200, respectively. By rotating the nuts 320, the vertical distance between the top plate 100 and the bottom plate 200 can be precisely adjusted.

[0032] In this embodiment, the screw 310 has a diameter of 10mm and a length of 300mm. This length design allows the cage system to accommodate different models of hydraulic jacks with heights ranging from 150mm to 280mm. When changing to a different specification of jack 600 or adjusting the stroke precompression, simply loosen the nut 320, move the top plate 100 or bottom plate 200 up or down to the appropriate position, and then tighten it again. There is no need to replace the entire cage, greatly improving the equipment's versatility.

[0033] In some embodiments of this application, the rope loop 400 is a metal semi-circular ring welded to the center of the base plate 200, and the rope loop 400 has a diameter of 10 mm and a height of 30 mm.

[0034] In this embodiment, a rope loop 400 is welded and fixed at the center of the base plate 200. The rope loop 400 is made of Q235 steel, is a semi-circular metal ring with a diameter of 10mm and a height of 30mm. The rope loop 400 is firmly welded to the center of the back of the base plate 200, serving as the stress attachment point for the wire rope 510.

[0035] In some embodiments of this application, the wire rope 510 has a diameter of 5 mm and a length of 4 m, and the surface of the wire rope 510 is coated with an anti-rust layer.

[0036] In some embodiments of this application, the expansion bolt 520 has a diameter of 10mm, a length of 80mm, and an effective anchoring depth greater than 55mm. The expansion bolt 520 is anchored in the drilled hole in the structural base surface and is used to fix both ends of the wire rope 510.

[0037] In some embodiments of this application, the spacing between the expansion bolts 520 is greater than 1m and the normal between the expansion bolts 520 coincides with the moving direction of the piston rod of the jack 600.

[0038] In this embodiment, the anchoring connection assembly 500 includes a steel wire rope 510 and two expansion bolts 520. The steel wire rope 510 has a diameter of 5mm and a total length of 4m. To adapt to the humid and dusty environment of construction sites, the surface of the steel wire rope 510 is coated with a galvanized anti-rust layer. In use, the middle section of the steel wire rope 510 is wrapped around the rope loop 400 on the back of the base plate 200, and both ends are led out through two symmetrical inclined grooves 210 on the back of the base plate 200. The 45° inclination angle of the inclined grooves 210 allows the steel wire rope 510 to naturally open to both sides when under force, forming a stable triangular force-bearing structure. At the same time, the walls of the inclined grooves 210 provide frictional restraint to the steel wire rope 510, preventing it from slipping during severe vibration. The expansion bolts 520 have a diameter of 10mm and a length of 80mm, with an effective anchoring depth greater than 55mm. The two ends of the steel wire rope 510 are fixed to the heads of the two expansion bolts 520 by rope loops or wedge joints.

[0039] The specific steps for using this application are as follows: Step 1: Site Survey and Anchor Point Construction Based on the thrust direction and magnitude determined in the repair plan, select two anchor points on the ground (structural base) in front of the component 700 to be repaired. The distance between the two anchor points should be greater than 1m, and the normal direction of the line connecting the two points should coincide with the expected movement direction of the piston rod of the jack 600 to ensure a straight reaction path and avoid generating lateral forces. Drill holes in the ground using an electric drill, insert two expansion bolts 520, and tighten them for fixation.

[0040] Step 2: Cage frame assembly and jack insertion Place the hydraulic jack at the center of the upper surface of the base plate 200. Cover the jack 600 with the top plate 100, so that the piston rod of the jack 600 passes through the through hole 110 in the center of the top plate 100. Pass the four screws 310 through the mounting holes 120 of the top plate 100 and the base plate 200, and screw on the nuts 320. Adjust the nuts 320 according to the height of the jack 600 so that the top plate 100 and the base plate 2002 clamp the jack 600, forming a stable cage structure. At this time, the top of the piston rod should be slightly higher than the upper surface of the top plate 1001 so as to contact the upper support component.

[0041] Step 3: Connecting the 510 steel wire rope Hang the middle of the wire rope 510 on the rope loop 400 on the back of the base plate 200. Pass both ends of the wire rope 510 through the inclined groove 210 on the back of the base plate 200, straighten it, and fix it to the two expansion bolts 520 on the ground in front. Check if the wire rope 510 is taut and confirm that the inclined groove 210 has effectively enveloped and guided the wire rope 510.

[0042] Step 4: Applying Thrust and Self-Balancing Operation Start the hydraulic pump station to drive the piston rod of jack 600 to extend. The top of the piston rod presses against the component 700 to be repaired (such as an inclined square steel beam) above, pushing it to move horizontally in the predetermined direction.

[0043] During this process, the jack 600 base generates a backward reaction force on the base plate 200. This reaction force is transmitted through the base plate 200 to the rope loop 400, and then to the wire rope 510. The wire rope 510 transmits the tension to the expansion bolt 520 on the ground in front. Because the expansion bolt 520 is firmly anchored in the ground structure, the ground provides a huge reaction force. Thus, a complete self-balancing mechanical system is formed. The entire system does not require a rear or side wall as a reaction force support; it can achieve heavy-tonnage horizontal moving operations simply by anchoring to the ground in front.

[0044] Step 5: Reset Completed and Disassembly Once the component is in place, stop the oil supply and slowly release the pressure from jack 600. After the system is completely unloaded, loosen the expansion bolt 520, remove the wire rope 510, loosen the nut 320 of the adjusting support assembly 300, disassemble the cage frame, and remove jack 600 to complete one work cycle.

[0045] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that modifications or equivalent substitutions can still be made to the specific implementation of the present invention. Any modifications or equivalent substitutions that do not depart from the spirit and scope of the present invention should be covered within the scope of protection of the claims of the present invention.

Claims

1. A self-balancing hydraulic cylinder cage system for the repair of earthquake-damaged buildings, characterized in that, include: The top plate is used to limit the piston rod of the jack. The top plate has a through hole in the center for the piston rod to pass through, and mounting holes are provided at the four corners of the top plate. The base plate, which is parallel to the top plate, is used to support the jack base. The base plate has mounting holes at its four corners and symmetrically distributed inclined grooves on its back. The adjustment support assembly includes four screws and matching nuts. The screws pass through the mounting holes of the top plate and the bottom plate to connect the top plate and the bottom plate and adjust the distance between the top plate and the bottom plate. A rope loop, fixed to the center of the base plate, is used to connect a steel wire rope; The anchoring connection assembly includes a steel wire rope and multiple expansion bolts. The steel wire rope passes through the inclined groove and rope loop of the base plate, and its two ends are anchored to the structural base surface by the expansion bolts to form a self-balancing reaction force path.

2. The self-balancing hydraulic cylinder cage system for earthquake-damaged building repair according to claim 1, characterized in that, The diameter of the through hole matches the specifications of the jack piston rod.

3. The self-balancing hydraulic cylinder cage system for repairing earthquake-damaged buildings according to claim 1, characterized in that, The inclined groove is inclined at 45°, and the inclined groove cooperates with the rope ring to guide and prevent slippage of the wire rope.

4. The self-balancing hydraulic cylinder cage system for repairing earthquake-damaged buildings according to claim 1, characterized in that, The rope loop is a metal semi-circular ring welded to the center of the base plate, with a diameter of 10mm and a height of 30mm.

5. The self-balancing hydraulic cylinder cage system for repairing earthquake-damaged buildings according to claim 1, characterized in that, The screw has a diameter of 10mm and a length of 300mm. The distance between the top and the base plate can be adjusted by the nut to accommodate different models of jacks.

6. The self-balancing hydraulic cylinder cage system for earthquake-damaged building repair according to claim 1, characterized in that, The wire rope has a diameter of 5mm and a length of 4m, and its surface is coated with an anti-rust layer.

7. The self-balancing hydraulic cylinder cage system for repairing earthquake-damaged buildings according to claim 1, characterized in that, The expansion bolt has a diameter of 10mm, a length of 80mm, and an effective anchoring depth of more than 55mm. The expansion bolt is anchored in a drilled hole in the structural base surface and is used to fix both ends of the wire rope.

8. The self-balancing hydraulic cylinder cage system for repairing earthquake-damaged buildings according to claim 1, characterized in that, The expansion bolts are spaced more than 1m apart, and the normal between the expansion bolts coincides with the direction of movement of the jack piston rod.

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