A frame building jacking device and a jacking method

Abstract

The present invention discloses a jacking device and a jacking method for a framed building, which relates to the technical field of auxiliary equipment for the disassembly and assembly of framed buildings and is used for jacking up the floor slabs of a framed structure. It includes a jack, the output end of the jack is provided with a jacking plate, the upper surface of the jacking plate is provided with a groove, the inside of the groove is provided with a telescopic plate that can be telescoped up and down, the outside of the telescopic plate is linked with a linkage assembly, the starting end of the linkage assembly is connected to the telescopic plate, and the end of the linkage assembly is provided with a clamping groove. When the upper surface of the jacking plate contacts the lower surface of the floor slab of the framed structure, the lower surface of the floor slab of the framed structure will exert a downward pressure on the top of the telescopic plate, causing the telescopic plate to displace downward in the groove and driving the linkage assembly to tilt towards the inner side of the telescopic plate. At least two groups of linkage assemblies are provided. The present invention realizes the function of improving the stability between the floor slab of the framed structure and the jacking device during the jacking process of the floor slab of the framed structure.

Description

Technical Field

[0001] The present invention relates to the technical field of auxiliary equipment for the disassembly and assembly of framed buildings, and particularly to a jacking device and a jacking method for framed buildings. Background Art

[0002] A framed building refers to a structure with a load-bearing system formed by rigid connections between beams and columns and a framed structure floor slab, that is, a framed structure composed of beams and columns jointly resists horizontal and vertical loads during use. The framed structure floor slab is a sheet-shaped prefabricated structure installed on the framed building.

[0003] During the installation or removal of the framed structure floor slab, a jacking device is needed to assist in the installation or removal of the framed structure floor slab. Especially during the removal process of the framed structure floor slab, the jacking device needs to be moved under the framed structure floor slab to be removed, the power supply of the jacking device is started, and an upward jacking force is applied to the bottom of the framed structure floor slab to assist in detaching the connection between the framed structure floor slab and the framed building.

[0004] However, when the existing jacking device for framed buildings uses a jack to assist in jacking up the framed structure floor slab, since the contact part between the framed structure floor slab and the jacking device is in a movable state when the framed structure floor slab detaches from the framed building, the framed structure floor slab will tilt and shake when being jacked up, so the overall stability of the framed structure floor slab is low and there are safety hazards. Summary of the Invention

[0005] The present application provides a jacking device and a jacking method for framed buildings, which realizes the function of improving the stability between the framed structure floor slab and the jacking device during the jacking process of the framed structure floor slab.

[0006] The jacking device and the jacking method for framed buildings provided by the present application adopt the following technical solutions:

[0007] A jacking device for framed buildings, used for jacking up a framed structure floor slab, includes a jack. The output end of the jack is provided with a jacking plate, the upper surface of the jacking plate is provided with a groove, and a telescopic plate that can be telescoped up and down is arranged inside the groove. A linkage assembly is connected to the outside of the telescopic plate. The starting end of the linkage assembly is connected to the telescopic plate, and a clamping groove is arranged at the end of the linkage assembly. When the upper surface of the jacking plate contacts the lower surface of the framed structure floor slab, the lower surface of the framed structure floor slab will apply a downward pressure to the top of the telescopic plate, causing the telescopic plate to generate a downward displacement in the groove and driving the linkage assembly to tilt towards the inner side of the telescopic plate. At least two groups of linkage assemblies are arranged, and the two groups of linkage assemblies are arranged oppositely. The two groups of linkage assemblies moving relatively are respectively towards one side of the framed structure floor slab and the other side opposite to it until the two clamping grooves are stuck at the edge of the framed structure floor slab.

[0008] By adopting the above technical solution, when the floor slab of the frame structure detaches from the frame column, the contact part between the floor slab of the frame structure and the jacking device is in an active state. When the floor slab of the frame structure is jacked up, the floor slab of the frame structure will tilt and shake. Therefore, in the present invention, a retractable plate that can move up and down is provided on the jacking plate. When the retractable plate touches the bottom surface of the floor slab of the frame structure, it will trigger the linkage assembly, causing the linkage assembly to move towards the edge of the floor slab of the frame structure until the card slot on the linkage assembly is stuck at the edge of the floor slab of the frame structure, playing a role in fixing the floor slab of the frame structure. By applying opposite clamping forces on one side and the opposite side of the floor slab of the frame structure respectively, the floor slab of the frame structure is stably locked on the jacking plate to ensure the stability during the upward jacking process of the floor slab of the frame structure.

[0009] Preferably, a connecting column is provided between the output end of the jack and the jacking plate. A limiting plate is provided at the bottom of the connecting column. At least two groups of vertical rods are provided inside the limiting plate. Both groups of vertical rods penetrate the limiting plate, and the two groups of vertical rods are arranged in parallel between them. The central axis of the vertical rod is perpendicular to the plate surface support of the limiting plate.

[0010] By adopting the above technical solution, during the jacking process of the jacking plate, the jacking plate is in a suspended state and is prone to shaking left and right, and the rising is not smooth enough. Therefore, by providing a limiting plate between the jacking plate and the jack, and by means of the vertical rods limited in the limiting plate, the limiting of the limiting plate is realized, so that the limiting plate moves straight up and down to ensure the stability of the jacking plate during the jacking process.

[0011] Preferably, a support seat is provided at the bottom of the vertical rod, and the support seat is used to place the jack.

[0012] By adopting the above technical solution, when the vertical rod is placed, the contact area between the vertical rod and the ground is reduced, which is likely to cause low overall stability of the jacking device and tipping over. Therefore, by providing a support seat at the bottom of the vertical rod, the contact area between the vertical rod and the ground is increased. In addition, the jack is placed on the support seat, increasing the overall weight of the support seat and enhancing the overall stability of the jacking device.

[0013] Preferably, a stop bar is provided at the top of the vertical rod, and the cross section of the stop bar is located within the longitudinal projection plane of the retractable plate.

[0014] By adopting the above technical solution, during the descending process of the jacking plate, the lower surface of the jacking plate will collide with the top of the vertical rod, causing damage to the jacking plate. Therefore, by providing a stop bar at the top of the vertical rod, the stop bar is in surface contact with the floor slab of the frame structure. Compared with the point contact between the vertical rod and the floor slab of the frame structure, it can effectively reduce the damage to the lower surface of the jacking plate.

[0015] Preferably, a positioning column is provided at the bottom of the telescopic plate. A spring is provided outside the positioning column. One end of the spring is connected to the bottom of the telescopic plate, and the other end of the spring is connected to the jacking plate. The positioning column penetrates through the bottom of the jacking plate. When the jacking plate moves downward, the jacking plate moves towards the top position of the stop bar until the bottom of the positioning column abuts against the upper surface of the stop bar, causing the telescopic plate to displace upward.

[0016] By adopting the above technical solution, when the jacking plate descends to the lowest position, it is necessary to remove the frame structure floor slab. Only by manual means, it is not only time-consuming and laborious, but also easy to cause breakage at the edge of the frame structure floor slab. Therefore, by arranging a positioning column at the bottom of the telescopic plate, and the positioning column penetrates through the bottom of the jacking plate, the downward-moving jacking plate will drive the positioning column to move downward. When the bottom of the positioning column abuts against the upper surface of the stop bar, the telescopic plate will displace upward and reverse-drive the linkage assembly, causing the card slot to disengage from the edge of the frame structure floor slab. The frame structure floor slab released from the restraint of the card slot is easier to disassemble.

[0017] Preferably, a limiting sleeve for the vertical rod to pass through is provided inside the limiting plate. There are balls between the inner wall of the limiting sleeve and the outer wall of the vertical rod.

[0018] By adopting the above technical solution, since the limiting plate is connected to the jacking plate, the vertically moving jacking plate will inevitably drive the limiting plate to move up and down along the axial direction of the vertical rod. There is a relative sliding movement trajectory between the limiting plate and the vertical rod, and the friction is large, which is easy to cause wear at the contact part between the limiting plate and the vertical rod. Therefore, by arranging a limiting sleeve at the connection between the limiting plate and the vertical rod, and arranging balls inside the limiting sleeve, the rolling of the balls is used to reduce the wear between the limiting plate and the vertical rod, thereby prolonging the service life of the limiting plate.

[0019] Preferably, it further includes a storage tank for storing lubricating oil. An oil delivery path is provided inside the storage tank. The oil delivery path is successively provided with a sliding piston, a sponge block for storing lubricating oil, and an oil delivery pipe connected to the storage tank. One end of the oil delivery pipe communicates with the storage tank, and the other end of the oil delivery pipe communicates with the inside of the limiting sleeve.

[0020] By adopting the above technical solution, in order to make the up and down sliding between the limiting plate and the vertical rod smoother, a storage tank is provided. The sliding piston is used to squeeze the sponge block filled with lubricating oil, so that the lubricating oil in the sponge block enters the oil delivery pipe and is introduced into the limiting sleeve, realizing the lubrication of the inner wall of the limiting sleeve, making the balls roll more smoothly, and reducing the wear between the limiting plate and the vertical rod.

[0021] Preferably, the upper surface of the piston is connected to the lower surface of the limit plate. When the limit plate moves the piston downward, the piston passes through the opening at the top of the oil storage tank and is squeezed with the sponge block, so that the lubricating oil enters the limit sleeve through the oil pipe.

[0022] By adopting the above technical solution, by connecting the piston to the lower surface of the limit plate, the downward movement of the limit plate is utilized to drive the piston to squeeze the sponge block, thereby saving energy and reducing emissions.

[0023] Preferably, a refueling port is provided on the storage box.

[0024] By adopting the above technical solution, lubricating oil can be continuously added to the interior of the storage tank to ensure a sustainable supply of lubricating oil.

[0025] Preferably, the jacking method of the frame building jacking device comprises the following steps:

[0026] S1: Move the frame building jacking device to the bottom of the frame structure floor to be removed, and reasonably adjust the position of the frame building jacking device;

[0027] S2: Use the jack to drive the limit plate, so that the limit plate moves upward steadily on the vertical pole, and moves the lifting plate toward the lower surface of the frame structure floor until the top of the telescopic plate contacts the lower surface of the frame structure floor, and use the downward movement of the telescopic plate to trigger the linkage component, so that the card slot is stuck at the edge of the frame structure floor;

[0028] S3: Use the jack to drive the limit plate, so that the limit plate moves downward steadily under the vertical pole, and the lifting plate moves toward the top position of the stop bar until the bottom of the positioning column abuts against the upper surface of the stop bar, so that the telescopic plate moves upward, and the linkage assembly is reset, so that the edge of the frame structure floor is out of the slot;

[0029] S4: The limit plate moves downward, and the piston and the sponge block are squeezed, so that the lubricating oil enters the limit sleeve through the oil pipe to lubricate the limit sleeve.

[0030] By adopting the above technical solution, the jacking method of the frame building jacking device is provided by setting a telescopic plate on the upper surface of the jacking plate and triggering the linkage assembly so that the linkage assembly is self-locked on the frame structure floor, so as to ensure the overall stability of the jacking device during the jacking process.

[0031] In summary, this application has the following beneficial effects:

[0032] 1. The jacking device for frame buildings is provided with a telescopic plate on the jacking plate that can be telescoped up and down. When the telescopic plate touches the bottom surface of the floor slab of the frame structure, it will trigger the linkage component, causing the linkage component to move towards the edge of the floor slab of the frame structure until the card slot on the linkage component is stuck at the edge of the floor slab of the frame structure, playing a role in fixing the floor slab of the frame structure. By applying opposite clamping forces on one side and the opposite side of the floor slab of the frame structure respectively, the floor slab of the frame structure is stably locked on the jacking plate, which is used to ensure the stability during the upward jacking process of the floor slab of the frame structure;

[0033] 2. The jacking method of the jacking device for frame buildings is to set a telescopic plate on the upper surface of the jacking plate and trigger the linkage component, so that the linkage component is self-locked on the floor slab of the frame structure, which is used to ensure the overall stability of the jacking device during the jacking process. Description of the Drawings

[0034] Figure 1 is the overall structural schematic diagram of the jacking device for frame buildings in this embodiment;

[0035] Figure 2 is the sectional view of the jacking plate in this embodiment;

[0036] Figure 3 is the overall structural schematic diagram of the telescopic plate in the downward movement state in this embodiment;

[0037] Figure 4 is the connection structural schematic diagram of the limit plate and the vertical rod in this embodiment;

[0038] Figure 5 is the exploded view between the limit plate and the vertical rod in this embodiment;

[0039] Figure 6 is the sectional structural schematic diagram of the storage box in this embodiment;

[0040] Figure 7 is the exploded view between the limit plate and the piston in this embodiment;

[0041] Description of the Reference Numerals: 1, jack; 2, jacking plate; 3, groove; 4, telescopic plate; 5, linkage component; 501, first connecting plate; 502, second connecting plate; 503, third connecting plate; 504, recessed part; 6, card slot; 7, connecting column; 8, limit plate; 9, vertical rod; 10, support seat; 11, positioning column; 12, stop bar; 13, limit sleeve; 14, storage box; 15, piston; 16, sponge block; 17, oil delivery pipe. Detailed Embodiment

[0042] The present application will be further described in detail below in conjunction with the accompanying drawings. It is necessary to point out here that the following specific embodiments are only used to further illustrate the present application and should not be construed as limiting the protection scope of the present application. Those skilled in the art can make some non-essential improvements and adjustments to the present application based on the above application content.

[0043] Embodiment: The present invention discloses a frame building jacking device and a jacking method. As Figure 1 - Figure 2 shown, the frame building jacking device is used to jack the floor slab of the frame structure and includes a jack 1. A jacking plate 2 is provided at the output end of the jack 1. A groove 3 is provided on the upper surface of the jacking plate 2. The groove 3 is a strip-shaped structure. A telescopic plate 4 that can stretch up and down is provided inside the groove 3. A linkage assembly 5 is linked to the outside of the telescopic plate 4. The starting end of the linkage assembly 5 is connected to the telescopic plate 4, and a clamping groove 6 is provided at the end of the linkage assembly 5. Specifically, the linkage assembly 5 includes a first connecting plate 501, a second connecting plate 502, a third connecting plate 503, and a recessed portion 504 provided on the telescopic plate 4. The inner end of the first connecting plate 501 faces the recessed portion 504. The center position of the first connecting plate 501 is rotatably provided inside the jacking plate 2. The outer end of the first connecting plate 501 is hinged to one end of a second connecting rod. The other end of the second connecting rod is connected to one end of the third connecting plate 503. The middle of the third connecting plate 503 is rotatably provided inside the jacking plate 2. The clamping groove 6 is provided at the other end of the third connecting plate 503 and close to the inner side position of the third connecting plate 503. When the upper surface of the jacking plate 2 contacts the lower surface of the frame structure floor slab, the lower surface of the frame structure floor slab will apply a downward pressure to the top of the telescopic plate 4, causing the telescopic plate 4 to displace downward in the groove 3 and causing the linkage assembly 5 to generate linkage. And there are two sets of linkage assemblies 5, and the two sets of linkage assemblies 5 are symmetrically arranged about the center line of the jacking plate 2. At this time, the frame structure floor slab is located between the two sets of linkage assemblies 5, and the two sets of linkage assemblies 5 are arranged oppositely. The two sets of linkage assemblies 5 moving relatively respectively face one side of the frame structure floor slab and the other side opposite to it. As Figure 4 shown, for the linkage assembly 5 located on the left side of the jacking plate 2, the downward moving telescopic plate 4 drives the recessed portion 504 to displace downward. At this time, the first connecting plate 501 rotates clockwise around the center point of the first connecting plate 501. At this time, the second connecting plate 502 moves upward in linkage and drives the third connecting plate 503 to rotate clockwise around its center point, causing the clamping groove 6 to be stuck at the edge of the frame structure floor slab.

[0044] By providing a retractable plate 4 on the jacking plate 2 that can be retracted and extended vertically, when the retractable plate 4 contacts the bottom surface of the framed floor slab, it will trigger the linkage assembly 5 to move towards the edge of the framed floor slab until the card slot 6 on the linkage assembly 5 is stuck at the edge of the framed floor slab, playing a role in fixing the framed floor slab. By applying opposite clamping forces on one side and the opposite side of the framed floor slab respectively, the framed floor slab is stably locked on the jacking plate 2 to ensure the stability during the upward jacking process of the framed floor slab.

[0045] To enhance the stability during the up and down movement of the framed floor slab, further optimized, as Figure 4 shown, this solution also has a connecting column 7 between the output end of the jack 1 and the jacking plate 2. A limiting plate 8 is provided at the bottom of the connecting column 7. Four vertical rods 9 are provided inside the limiting plate 8. The four vertical rods 9 all penetrate the limiting plate 8, and the four vertical rods 9 are arranged in parallel. The central axis of the vertical rod 9 is perpendicular to the plane of the limiting plate 8; a support seat 10 is provided at the bottom of the vertical rod 9, and the support seat 10 is used to place the jack 1; by providing a limiting plate 8 between the jacking plate 2 and the jack 1 and relying on the vertical rods 9 limited in the limiting plate 8, the limiting of the limiting plate 8 is realized, enabling the limiting plate 8 to move straight up and down, which is used to ensure the stability of the jacking plate 2 during the jacking process.

[0046] As Figure 4 - Figure 5 shown, to solve the technical problem of "when the jacking plate 2 descends, the lower surface of the jacking plate 2 will collide with the top of the vertical rod 9, causing damage to the jacking plate 2", further optimized, this solution has a stop bar 12 at the top of the vertical rod 9. The cross-section of the stop bar 12 is within the longitudinal projection plane of the retractable plate 4. The stop bar 12 is in surface contact with the framed floor slab. Compared with the point contact between the vertical rod 9 and the framed floor slab, it can effectively reduce the damage to the lower surface of the jacking plate 2; in addition, a positioning column 11 is provided at the bottom of the retractable plate 4. A spring is provided outside the positioning column 11. One end of the spring is connected to the bottom of the retractable plate 4, and the other end of the spring is connected to the jacking plate 2. The positioning column 11 penetrates the bottom of the jacking plate 2. When the jacking plate 2 moves downward, the jacking plate 2 moves towards the top position of the stop bar 12 until the bottom of the positioning column 11 abuts against the upper surface of the stop bar 12, causing the retractable plate 4 to displace upward; specifically, as Figure 3As shown in the figure, for the linkage assembly 5 located on the left side of the jacking plate 2, when the telescopic plate 4 moving upward drives the concave portion 504 to generate an upward displacement, at this time, the first connecting plate 501 rotates counterclockwise around the center point of the first connecting plate 501. At this time, the second connecting plate 502 moves downward in a linked manner and drives the third connecting plate 503 to rotate counterclockwise around its center point, causing the card slot 6 to disengage from the edge of the frame structure floor slab. Generally speaking, by providing the positioning column 11 at the bottom of the telescopic plate 4, and the positioning column 11 passing through the bottom of the jacking plate 2, the downward moving jacking plate 2 will drive the positioning column 11 to move downward. When the bottom of the positioning column 11 abuts against the upper surface of the stop bar 12, it causes the telescopic plate 4 to generate an upward displacement and reversely drives the linkage assembly 5, causing the card slot 6 to disengage from the edge of the frame structure floor slab. The frame structure floor slab released from the restraint of the card slot 6 is easier to disassemble.

[0047] As Figure 5 - Figure 6 shown, in order to prevent relative sliding between the limit plate 8 and the vertical rod 9 in this solution, thereby causing wear at the contact part between the limit plate 8 and the vertical rod 9, further optimized, in this solution, a limit sleeve 13 through which the vertical rod 9 passes is provided inside the limit plate 8. There are balls between the inner wall of the limit sleeve 13 and the outer wall of the vertical rod 9. By the rolling of the balls, the wear between the limit plate 8 and the vertical rod 9 is reduced, thereby extending the service life of the limit plate 8. In addition, the frame building jacking device further includes a storage tank 14 for storing lubricating oil. The storage tank 14 is fixed on the four groups of vertical rods 9, and an oil delivery path is provided inside the storage tank 14. The oil delivery path is sequentially provided with a sliding piston 15, a sponge block 16 for storing lubricating oil, and an oil delivery pipe 17 connected to the storage tank 14. One end of the oil delivery pipe 17 communicates with the storage tank 14, and the other end of the oil delivery pipe 17 communicates with the inside of the limit sleeve 13. As Figure 7 shown, by providing the storage tank 14 and using the sliding piston 15 to squeeze the sponge block 16 filled with lubricating oil, the lubricating oil in the sponge block 16 enters the oil delivery pipe 17 and is introduced into the limit sleeve 13, realizing the lubrication of the inner wall of the limit sleeve 13, making the balls roll more smoothly and reducing the wear between the limit plate 8 and the vertical rod 9. And the upper surface of the piston 15 is connected to the lower surface of the limit plate 8, and the output end of the jack 1 passes through the storage tank 14 and is connected to the lower surface of the piston 15. When the limit plate 8 drives the piston 15 to move downward, the piston 15 penetrates the opening provided at the top of the storage tank and generates extrusion with the sponge block 16, causing the lubricating oil to enter the limit sleeve 13 through the oil delivery pipe 17, realizing the lubrication of the inner wall of the limit sleeve 13, making the balls roll more smoothly and reducing the wear between the limit plate 8 and the vertical rod 9. It should be noted that a fuel filling port is provided on the storage tank 14, and its purpose is to continuously add lubricating oil to the inside of the storage tank 14 to ensure the sustainable supply of lubricating oil.

[0048] The jacking method of the frame building jacking device comprises the following steps:

[0049] S1: Move the frame building jacking device to directly below the floor slab of the frame structure to be demolished, and reasonably adjust the position of the frame building jacking device;

[0050] S2: Use the jack 1 to drive the limit plate 8, so that the limit plate 8 moves smoothly upward on the vertical rod 9, and drive the jacking plate 2 to move towards the lower surface of the frame structure floor slab. Until the top end of the telescopic plate 4 contacts the lower surface of the frame structure floor slab, use the downward movement of the telescopic plate 4 to touch the linkage assembly 5, so that the clamping groove 6 is stuck at the edge of the frame structure floor slab;

[0051] S3: Use the jack 1 to drive the limit plate 8, so that the limit plate 8 moves smoothly downward under the vertical rod 9, and drive the jacking plate 2 to move towards the top position of the retaining strip 12. Until the bottom of the positioning column 11 abuts against the upper surface of the retaining strip 12, causing the telescopic plate 4 to displace upward, and driving the linkage assembly 5 to reset, so that the edge of the frame structure floor slab disengages from the clamping groove 6;

[0052] S4: The downward moving limit plate 8 drives the piston 15 to squeeze the sponge block 16, so that the lubricating oil enters the limit sleeve 13 through the oil delivery pipe 17 for lubricating the limit sleeve 13.

[0053] Working principle: When the user needs to use the frame building jacking device to demolish the frame structure floor slab, first move the frame building jacking device to directly below the frame structure floor slab to be demolished, and reasonably adjust the position of the frame building jacking device; Then use the jack 1 to drive the limit plate 8, so that the limit plate 8 moves smoothly upward on the vertical rod 9, and drive the jacking plate 2 to move towards the lower surface of the frame structure floor slab. Until the top end of the telescopic plate 4 contacts the lower surface of the frame structure floor slab, use the downward movement of the telescopic plate 4 to touch the linkage assembly 5, so that the clamping groove 6 is stuck at the edge of the frame structure floor slab, for quickly locking the frame structure floor slab, so that the frame structure floor slab is stably locked on the jacking device, for ensuring the stability during the process of the frame structure floor slab breaking away;

[0054] For the disassembled frame structure floor slab, the user can use the jack 1 to drive the limit plate 8 in the reverse direction, so that the limit plate 8 moves smoothly downward under the vertical rod 9, and drive the jacking plate 2 to move towards the top position of the retaining strip 12. Until the bottom of the positioning column 11 abuts against the upper surface of the retaining strip 12, causing the telescopic plate 4 to displace upward, and driving the linkage assembly 5 to reset, so that the edge of the frame structure floor slab disengages from the clamping groove 6. At this time, the frame structure floor slab is movably connected to the jacking plate 2, and the disassembled frame structure floor slab is removed by manual handling.

[0055] The above are all preferred embodiments of this application, and the protection scope of this application is not limited thereby. Therefore, all equivalent changes made according to the structure, shape, and principle of this application shall be covered within the protection scope of this application.

Claims

1. A frame building jacking device for jacking up the floor slab of a frame structure, comprising a jack (1), characterized in that: The output end of the jack (1) is provided with a jacking plate (2). The upper surface of the jacking plate (2) is provided with a groove (3). Inside the groove (3), there is a telescopic plate (4) that can telescopically move up and down. The outside of the telescopic plate (4) is linked with a linkage assembly (5). The starting end of the linkage assembly (5) is connected to the telescopic plate (4), and the end of the linkage assembly (5) is provided with a clamping groove (6). When the upper surface of the jacking plate (2) contacts the lower surface of the frame-structured floor slab, the lower surface of the frame-structured floor slab will exert a downward pressure on the top of the telescopic plate (4), causing the telescopic plate (4) to displace downward within the groove (3) and driving the linkage assembly (5) to tilt towards the inner side of the telescopic plate (4). At least two sets of the linkage assemblies (5) are provided, and the two sets of linkage assemblies (5) are arranged oppositely. The two sets of linkage assemblies (5) moving relatively move towards one side of the frame-structured floor slab and the other side opposite to it respectively until the two clamping grooves (6) are clamped at the edge of the frame-structured floor slab; A connecting column (7) is provided between the output end of the jack (1) and the jacking plate (2). The bottom of the connecting column (7) is provided with a limiting plate (8). Inside the limiting plate (8), at least two sets of vertical rods (9) are provided. The two vertical rods (9) both penetrate through the limiting plate (8), and the two vertical rods (9) are arranged in parallel. The central axis of the vertical rod (9) is perpendicularly arranged with respect to the plate surface support of the limiting plate (8); The bottom of the vertical rod (9) is provided with a support seat (10), and the support seat (10) is used to place the jack (1); The top of the vertical rod (9) is provided with a stop bar (12), and the cross-section of the stop bar (12) is located within the longitudinal projection plane of the telescopic plate (4); The bottom of the telescopic plate (4) is provided with a positioning column (11). A spring is provided outside the positioning column (11). One end of the spring is connected to the bottom of the telescopic plate (4), and the other end of the spring is connected to the jacking plate (2). The positioning column (11) penetrates through the bottom of the jacking plate (2). When the jacking plate (2) moves downward, the jacking plate (2) moves towards the top position of the stop bar (12) until the bottom of the positioning column (11) abuts against the upper surface of the stop bar (12), causing the telescopic plate (4) to displace upward.

2. The frame building jacking device according to claim 1, characterized in that: Inside the limiting plate (8), there is a limiting sleeve (13) through which the vertical rod (9) passes. There are balls between the inner wall of the limiting sleeve (13) and the outer wall of the vertical rod (9).

3. The frame building jacking device according to claim 1, wherein: It further includes a storage tank (14) for storing lubricating oil. Inside the storage tank (14), there is an oil delivery path. The oil delivery path is successively provided with a sliding piston (15), a sponge block (16) for storing lubricating oil, and an oil delivery pipe (17) connected to the storage tank (14). One end of the oil delivery pipe (17) communicates with the storage tank (14), and the other end of the oil delivery pipe (17) communicates with the inside of the limiting sleeve (13).

4. The frame building jacking device according to claim 3, characterized in that: The upper surface of the piston (15) is connected to the lower surface of the limit plate (8). When the limit plate (8) drives the piston (15) to move downward, the piston (15) penetrates through the opening at the top of the oil storage tank and squeezes the sponge block (16), causing the lubricating oil to enter the limit sleeve (13) through the oil delivery pipe (17).

5. The frame building jacking device according to claim 3, wherein: A fuel filling port is provided on the storage tank (14).

6. A jacking method for a frame building jacking device according to any one of claims 3-5, characterized in that: The steps include: S1: Move the frame building jacking device to directly below the floor slab of the frame structure to be demolished, and reasonably adjust the position of the frame building jacking device; S2: Use the jack (1) to drive the limit plate (8), so that the limit plate (8) moves smoothly upward on the vertical rod (9), and drive the jacking plate (2) to move towards the lower surface of the frame structure floor slab until the top end of the telescopic plate (4) contacts the lower surface of the frame structure floor slab. Use the downward movement of the telescopic plate (4) to trigger the linkage assembly (5), so that the clamping groove (6) is stuck at the edge of the frame structure floor slab; S3: Use the jack (1) to drive the limit plate (8), so that the limit plate (8) moves smoothly downward on the vertical rod (9), and drive the jacking plate (2) to move towards the top position of the retaining strip (12) until the bottom of the positioning column (11) abuts against the upper surface of the retaining strip (12), causing the telescopic plate (4) to displace upward, and drive the linkage assembly (5) to reset, so that the edge of the frame structure floor slab disengages from the clamping groove (6); S4: The downward moving limit plate (8) drives the piston (15) to squeeze the sponge block (16), causing the lubricating oil to enter the limit sleeve (13) through the oil delivery pipe (17) for lubricating the limit sleeve (13).

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