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CN-224200287-U - Steel mesh frame jacking anti-overturning limiting structure

CN224200287UCN 224200287 UCN224200287 UCN 224200287UCN-224200287-U

Abstract

The utility model relates to the technical field of steel mesh frame jacking, in particular to a steel mesh frame jacking anti-overturning limiting structure which comprises a bearing base unit, a jacking execution unit, a composite supporting unit and a dynamic locking mechanism, wherein the bearing base unit comprises a concrete base and an embedded screw vertically embedded in the bearing base unit, the top end of the embedded screw protrudes out of the surface of the concrete base, and the jacking execution unit comprises a hydraulic jack and a top disc arranged at the output end of the hydraulic jack. According to the utility model, when the pre-tightening nut is screwed on the pre-buried screw rod, the prismatic surface opposite to the pre-tightening nut is parallel to the inner side wall of the limiting groove, the limiting groove is used for limiting the pre-tightening nut by turning the connecting seat, so that dynamic load and vibration in the jacking process can be handled, the stable connection between the supporting seat and the pre-buried screw rod is promoted, the defect that the traditional nut fastening mode is easy to loosen when being subjected to complex stress is overcome, and meanwhile, the risk of overturning the steel net frame is reduced.

Inventors

  • WANG GUOXIN
  • Ding Wanqun
  • Mu Lishuang

Assignees

  • 安徽新邦钢结构工程有限公司

Dates

Publication Date
20260505
Application Date
20250603

Claims (8)

  1. 1. The utility model provides a limit structure is prevented toppling in steel mesh frame jacking which characterized in that includes: The bearing matrix unit comprises a concrete base (1) and an embedded screw (2) vertically embedded in the concrete base, and the top end of the embedded screw (2) protrudes out of the surface of the concrete base (1); the jacking execution unit comprises a hydraulic jack (14) and a top disc (15) arranged at the output end of the hydraulic jack; The composite supporting unit comprises a supporting seat (4) sleeved on the periphery of a hydraulic jack (14), and a plurality of reinforcing plates (7) circumferentially and uniformly distributed between the supporting seat (4) and the hydraulic jack (14), wherein the bottoms of the reinforcing plates (7) are fixedly connected with the supporting seat (4), connecting holes (5) corresponding to the positions of the embedded screws (2) are formed in the tops of the supporting seat (4), and mounting holes (8) are formed in each reinforcing plate (7); The dynamic locking mechanism comprises a pre-tightening nut (6) in threaded connection with the pre-buried screw (2), a rotating shaft (10) in the mounting hole (8) and a connecting seat (9) fixed on the outer wall of the rotating shaft (10), wherein a limit groove (11) matched with the outer contour of the pre-tightening nut (6) is formed in the tail end of the connecting seat (9), and the limit groove (11) is clamped on the prismatic surface of the pre-tightening nut (6) through the rotating connecting seat (9).
  2. 2. The steel mesh frame jacking anti-overturning limiting structure of claim 1 is characterized in that an embedded steel plate (3) is welded at the bottom of the embedded screw (2), and the embedded steel plate (3) is embedded into the concrete base (1) and provided with anti-pulling protrusions on the surface.
  3. 3. The steel mesh frame jacking anti-overturning limiting structure according to claim 2, wherein an arc-shaped fixing groove (12) is formed in one side, facing the hydraulic jack (14), of the reinforcing plate (7), a fixing ring (13) is welded at a corresponding position of a shell of the hydraulic jack (14), and the fixing ring (13) is welded in the corresponding fixing groove (12).
  4. 4. The steel mesh frame jacking anti-overturning limiting structure according to claim 3, further comprising a guiding linkage assembly, wherein the guiding linkage assembly comprises a plurality of sliding sleeves (16) vertically fixed at the top of the supporting seat (4), sliding rods (17) in sliding fit with the sliding sleeves (16), and annular connecting plates (18) fixed on the outer walls of the sliding rods (17).
  5. 5. The steel mesh frame jacking anti-overturning limiting structure of claim 4, wherein the sliding sleeves (16) are distributed on the top of the supporting seat (4) in an annular equidistant structure, and the sliding sleeves (16) are positioned between two adjacent connecting seats (9).
  6. 6. The steel mesh frame jacking anti-overturning limiting structure of claim 5, wherein a connecting ring (19) is fixed at the output end of the hydraulic jack (14), and the connecting ring (19) is fixedly connected with the end part of the connecting plate (18).
  7. 7. The steel mesh frame jacking anti-overturning limiting structure according to claim 6, wherein a low friction coefficient coating is coated on the surface of the sliding rod (17), and laser etched stroke graduation lines are arranged at equal intervals along the axial direction.
  8. 8. The steel mesh frame jacking anti-overturning limiting structure according to claim 7 is characterized in that two adjacent reinforcing plates (7) are arranged vertically.

Description

Steel mesh frame jacking anti-overturning limiting structure Technical Field The utility model relates to the technical field of steel mesh frame jacking, in particular to a steel mesh frame jacking anti-overturning limiting structure. Background The steel mesh frame jacking is an important technology for installing a large-span steel mesh frame structure in building construction. During construction, the steel net frame is assembled on the ground in a slicing way, then the assembled steel net frame is lifted to the designed height step by step through special equipment such as a hydraulic jack, a jacking bracket and the like according to preset steps, and finally high-altitude butt joint and fixation are carried out. The jack is fixed on concrete foundation in traditional steel mesh frame jacking limit structure by means of nut fastening mostly, and this mounting means is facing dynamic load, vibrations in the jacking process and long-time when lasting atress, appears not hard up, displacement phenomenon easily, can't form stable spacing constraint, and then leads to the steel mesh frame to take place the risk of overturning. Disclosure of utility model The utility model provides a steel mesh frame jacking anti-overturning limiting structure, which solves the technical problems that the traditional mode of fastening by nuts is prone to loosening and displacement phenomena when facing dynamic load and vibration in the jacking process and continuously stressed for a long time, and cannot form stable limiting constraint, so that the steel mesh frame is in overturning risk. In order to solve the technical problems, the utility model provides a steel mesh frame jacking anti-overturning limiting structure, which comprises a bearing base unit, a jacking execution unit, a composite supporting unit and a dynamic locking mechanism; The bearing matrix unit comprises a concrete base and an embedded screw vertically embedded in the bearing matrix unit, and the top end of the embedded screw protrudes out of the surface of the concrete base; The jacking execution unit comprises a hydraulic jack and a top disc arranged at the output end of the hydraulic jack; The composite supporting unit comprises a supporting seat sleeved on the periphery of the hydraulic jack and a plurality of reinforcing plates uniformly distributed between the supporting seat and the hydraulic jack along the circumferential direction, the top of the supporting seat is provided with connecting holes corresponding to the positions of the embedded screws, and each reinforcing plate is provided with a mounting hole; The dynamic locking mechanism comprises a pre-tightening nut in threaded connection with the pre-buried screw rod, a rotating shaft in the mounting hole and a connecting seat fixed on the outer wall of the rotating shaft, wherein a limit groove matched with the outer contour of the pre-tightening nut is formed at the tail end of the connecting seat, and the limit groove is clamped on the prismatic surface of the pre-tightening nut through the rotating connecting seat. Preferably, the bottom of the embedded screw is welded with an embedded steel plate, and the embedded steel plate is embedded into the concrete base and provided with a pulling-resistant protrusion on the surface. Preferably, one side of the reinforcing plate, which faces the hydraulic jack, is provided with an arc-shaped fixing groove, a fixing ring is welded at a corresponding position of the hydraulic jack shell, and the fixing ring is welded in the corresponding fixing groove. Preferably, the hydraulic jack further comprises a guide linkage assembly, wherein the guide linkage assembly comprises a plurality of sliding sleeves vertically fixed at the top of the supporting seat, sliding rods in sliding fit with the sliding sleeves, and annular connecting plates fixed on the outer walls of the sliding rods, and a connecting ring is fixed at the output end of the hydraulic jack and fixedly connected with the end parts of the connecting plates. Preferably, the surface of the sliding rod is coated with a low friction coefficient coating, and laser etched travel graduation lines are arranged at equal intervals along the axial direction. Preferably, the connection part of the embedded steel plate and the embedded screw is provided with fan-shaped reinforcing ribs which are distributed radially. Preferably, the bottom surface of the top disc is provided with a pressure sensor array, and the pressure sensor array is connected to a PLC control system of the hydraulic jack in a signal mode. By means of the technical scheme, the beneficial effects of the utility model are as follows: 1. when the pre-tightening nut is screwed on the pre-buried screw rod, the prismatic surface opposite to the pre-tightening nut is parallel to the inner side wall of the limiting groove, the limiting groove is used for limiting the pre-tightening nut through the overturning connecting seat, dynamic load and