Static force cutting device for high-altitude concrete structure
By using the auxiliary hoisting mechanism of the static cutting device and the wire saw, non-destructive static cutting and safe hoisting of high-altitude concrete structures were achieved, solving the safety hazards of high-altitude cutting of high-rise buildings and preventing concrete beams or columns from falling.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZHEJIANG BAOYE CONSTR GROUP CO LTD
- Filing Date
- 2025-09-02
- Publication Date
- 2026-07-24
AI Technical Summary
Cutting high-rise concrete structures poses safety hazards, especially since concrete beams or columns are prone to falling after being cut. Existing technologies are difficult to effectively prevent falls without interfering with the cutting process.
Design a static cutting device, including an auxiliary hoisting mechanism and a wire saw. Use wire rope, electric hoist and wire saw to hoist and position concrete beams or beam-columns and perform non-destructive static cutting. After cutting, use electric hoist to hoist the concrete beams or beam-columns onto the floor slab.
It enables non-destructive static cutting of high-altitude concrete structures, preventing concrete beams or columns from falling and ensuring the safety and stability of the cutting process.
Smart Images
Figure CN224549727U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of building beam and column cutting structures, and more specifically to a static cutting device for high-altitude concrete structures. Background Technology
[0002] Currently, some high-rise buildings require cutting of their concrete structures (including beams and columns) after the overall concrete pouring is completed, due to considerations such as structural safety, construction needs, and seismic performance. While ground-level concrete structures can be cut using cutting machines or wire saws, high-altitude cutting operations on high-rise buildings are different from ground-level operations. They require an effective, safe, and feasible high-altitude cutting device. For example, there is a risk of concrete beams or columns falling during high-altitude cutting, so appropriate structures need to be designed to prevent falls while ensuring that the cutting of concrete components or beams and columns is not interfered with. Utility Model Content
[0003] The purpose of this utility model is to address the shortcomings of existing technologies by providing a static cutting device for high-altitude concrete structures. This static cutting device can hoist and position the concrete beams or columns to be cut. Based on a wire saw, it can easily achieve non-destructive static cutting of concrete beams or columns. After the cutting is completed, the concrete beams or columns can be hoisted and placed on the floor slab, which can effectively prevent the beams or columns from falling.
[0004] A static cutting device for high-altitude concrete structures includes an auxiliary hoisting mechanism for concrete components and a wire saw. The auxiliary hoisting mechanism and the wire saw are respectively installed on the upper floor slab and the lower floor slab of the high-rise building. The auxiliary hoisting mechanism includes a steel wire rope, the lower end of which is fixedly connected to a hook. The hook is tied and fixed to the concrete component between the upper floor slab and the lower floor slab by a wide cloth strap. The upper end of the steel wire rope is located on the upper side of the upper floor slab and is fixedly connected to an electric hoist. The electric hoist is inserted into a U-shaped steel trestle and fixedly connected to the top of the steel trestle. The steel trestle is fixed to the upper floor slab.
[0005] The wire saw machine includes a base, a power station, a drive wheel, a guide wheel, and a diamond wire saw. The diamond wire saw of the wire saw machine is mounted on a concrete component between the upper floor slab and the lower floor slab.
[0006] Preferably, the steel trestle includes a horizontal load-bearing beam, with horizontal and perpendicular support beams welded to the lower end faces of both ends of the load-bearing beam, and vertical columns welded to both ends of the support beam, with steel pads welded to the lower ends of the columns, and the steel pads are fixed to the upper floor slab by expansion bolts.
[0007] Preferably, the electric hoist is provided with a lifting device at the top, and a welded lifting ring is fixedly connected to the lifting device, and the welded lifting ring is sleeved and fixed on the load-bearing beam.
[0008] Preferably, the concrete component between the upper floor slab and the lower floor slab is a horizontal beam; two sets of auxiliary hoisting mechanisms are provided on the beam.
[0009] The upper floor slab has perforations formed opposite to the steel wire rope, and the steel wire rope is inserted into the perforations of the upper floor slab.
[0010] Preferably, the concrete component between the upper and lower floor slabs is a vertical beam, on which an auxiliary hoisting mechanism is installed. Wide straps on the auxiliary hoisting mechanism are tied to the upper part of the vertical beam. One side of the upper part of the vertical beam exposes the main reinforcing bars, and the wide straps are inserted between the main reinforcing bars.
[0011] Preferably, the base of the wire saw is fixedly connected to the lower floor slab by expansion bolts.
[0012] Preferably, the outer side of the concrete component is provided with an auxiliary support, which includes an auxiliary beam parallel to the concrete component. The two ends of the auxiliary beam are located at the two ends of the wide cloth strip and are respectively welded and fixed with I-beams perpendicular to the auxiliary beam. The I-beams abut against the side wall of the outer side of the concrete component. The two ends of the I-beams extend out of the concrete component and are respectively inserted and fixed with several screws. The inner side wall of the concrete component abuts against an inner clamping plate, and the screws pass through the inner clamping plate and are screwed and fixed with locking nuts.
[0013] The beneficial effects of this utility model are as follows:
[0014] This static cutting device can hoist and position the concrete beams or columns to be cut. Based on the wire saw, it can easily achieve non-destructive static cutting of concrete beams or columns. After the cutting is completed, the concrete beams or columns can be hoisted and placed on the floor slab, which can effectively prevent the beams or columns from falling. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of the horizontal concrete component cutting structure in this utility model;
[0016] Figure 2 This is a schematic diagram of the hoisting structure for cutting vertical concrete components in this utility model;
[0017] Figure 3 This is a front view of the inner steel trestle part of this utility model;
[0018] Figure 4 This is a side view of the inner steel trestle portion of this utility model;
[0019] Figure 5This is a schematic diagram of the internal auxiliary support structure of this utility model.
[0020] In the diagram: 1. Upper floor slab; 11. Perforation; 2. Lower floor slab; 3. Concrete component; 4. Steel wire rope; 5. Wide cloth strip; 6. Steel trestle; 61. Steel pad; 62. Column; 63. Support beam; 64. Load-bearing beam; 7. Electric hoist; 8. Wire saw; 9. Auxiliary support; 91. Auxiliary beam; 92. I-beam; 93. Screw rod; 94. Inner clamp plate; 10. Main reinforcing bar; 20. Welded lifting ring. Detailed Implementation
[0021] Example: See Figure 1 , 2 As shown, a static cutting device for high-altitude concrete structures includes an auxiliary hoisting mechanism for concrete components and a wire saw 8. The auxiliary hoisting mechanism and the wire saw 8 are respectively installed on the upper floor slab 1 and the lower floor slab 2 of the high-rise building. The auxiliary hoisting mechanism includes a steel wire rope 4, the lower end of which is fixedly connected to a hook. The hook is tied and fixed to the concrete component 3 between the upper floor slab 1 and the lower floor slab 2 by a wide cloth strap 5. The upper end of the steel wire rope 4 is located on the upper side of the upper floor slab 1 and is fixedly connected to an electric hoist 7. The electric hoist 7 is inserted into a U-shaped steel trestle 6 and fixedly connected to the top of the steel trestle 6. The steel trestle 6 is fixed to the upper floor slab 1.
[0022] The wire saw machine 8 includes a base, a power station, a drive wheel, a guide wheel, and a diamond wire saw. The diamond wire saw of the wire saw machine is mounted on the concrete component 3 between the upper floor slab 1 and the lower floor slab 2.
[0023] Figure 3 , 4 As shown, the steel trestle 6 includes a horizontal load-bearing beam 64. Horizontal support beams 63 perpendicular to the load-bearing beam 64 are welded and fixed to the lower end faces of both ends of the load-bearing beam 64. Vertical columns 62 are welded and fixed to both ends of the support beams 63. Steel pads 61 are welded and fixed to the lower ends of the columns 62. The steel pads 61 are fixed to the upper floor slab 1 by expansion bolts. The steel trestle 6 can be stably fixed to the upper floor slab 1 and provide sufficient support force for the hoisting of the concrete component 3.
[0024] The electric hoist 7 is equipped with a lifting device on its top, and a welded lifting ring 20 is fixedly connected to the lifting device. The welded lifting ring 20 is sleeved and fixed on the load-bearing beam 64.
[0025] See Figure 1 , 3 As shown in Figures 1 and 4, the concrete component 3 between the upper floor slab 1 and the lower floor slab 2 is a horizontal beam 31; two sets of auxiliary hoisting mechanisms are provided on the beam 31; when the concrete component 3 is horizontal, two hoisting positions need to be set near the cutting point.
[0026] The upper floor slab 1 has through holes 11 formed on it, which are opposite to the steel wire rope 4. The steel wire rope 4 is inserted into the through holes 11 of the upper floor slab 1. When cutting the horizontal concrete component 3, it is necessary to drill holes in the upper floor slab 1 to install the steel wire rope 4.
[0027] See Figure 2 As shown, the concrete component 3 between the upper floor slab 1 and the lower floor slab 2 is a vertical beam 32. A set of auxiliary hoisting mechanisms is provided on the vertical beam 32. When cutting the vertical concrete component 3, it is more appropriate to make it a beam or column. In order to facilitate cutting, it is only allowed to be hoisted and fixed on the upper part of the beam or column to be cut.
[0028] The wide cloth strap 5 on the auxiliary hoisting mechanism is tied to the upper part of the vertical beam 32. One side of the upper part of the vertical beam 32 has a main steel bar 10 exposed. The wide cloth strap 5 is inserted between the main steel bars 10 of the vertical beam 32. In order to prevent the hoisting structure from detaching from the vertical beam 32 and to improve the connection strength, the wide cloth strap 5 can be placed inside the main steel bar 10 and the main steel bar 10 can be used to limit the position.
[0029] The base of the wire saw 8 is fixedly connected to the lower floor slab 2 by expansion bolts. During cutting, the wire saw 8 needs to be stably fixed.
[0030] See Figure 5 As shown, an auxiliary support 9 is provided on the outer side of the concrete component 3. The auxiliary support 9 includes an auxiliary beam 91 parallel to the concrete component 3. The two ends of the auxiliary beam 91 are located at the two ends of the wide cloth strip 5 and are respectively welded and fixed with I-beams 92 perpendicular to the auxiliary beam 91. The I-beams 92 abut against the side wall of the outer side of the concrete component 3. The two ends of the I-beams 92 extend out of the concrete component 3 and are respectively inserted and fixed with several screws 93. An inner clamping plate 94 abuts against the side wall of the inner side of the concrete component 3. The screws 93 pass through the inner clamping plate 94 and are screwed and fixed with locking nuts. In order to improve the stability of cutting, the above-mentioned auxiliary support 9 can be installed. When the concrete component 3 is horizontal, its auxiliary support 9 is horizontal, and its I-beams 92 are located on the left and right sides of the cutting point. When the concrete component 3 is vertical, the auxiliary support 9 can be set to be vertical, and the I-beams 92 are located on the upper and lower sides of the cutting point.
[0031] Working principle: This structure is a static cutting device for high-altitude concrete structures. The static cutting device mainly consists of two parts. One part is a wire saw 8 set on the lower floor slab 2 for cutting. The other part is an auxiliary hoisting mechanism set on the upper floor slab 1. The auxiliary hoisting mechanism consists of a steel trestle 6, an electric hoist 7, a steel wire rope 4, and a wide cloth belt 5. Its structure can be used to position and support the concrete component 3 to be cut, which facilitates the cutting of the wire saw 8. After the cutting is completed, the electric hoist 7 can hoist the concrete component 3 to the lower floor slab 2, which can effectively avoid the problem of the concrete component 3 falling during the demolition process.
[0032] The embodiments described above are illustrative of the present invention and are not intended to limit the present invention. Any person skilled in the art can modify the embodiments without departing from the spirit and scope of the present invention; therefore, the scope of protection of the present invention should be as set forth in the claims.
Claims
1. A static cutting device for high-altitude concrete structures, comprising an auxiliary hoisting mechanism for the concrete structure and a wire saw (8), wherein the auxiliary hoisting mechanism and the wire saw (8) are respectively installed on the upper floor slab (1) and the lower floor slab (2) of a high-rise building, characterized in that: The described auxiliary hoisting mechanism includes a steel wire rope (4). A hook is fixedly connected to the lower end of the steel wire rope (4). The hook is fixed to the concrete member (3) between the upper floor slab (1) and the lower floor slab (2) by a wide cloth belt (5). The upper end of the steel wire rope (4) is located on the upper side of the upper floor slab (1) and is fixedly connected to an electric hoist (7). The electric hoist (7) is inserted into a "冂"-shaped steel stool (6) and is fixedly connected to the top of the steel stool (6). The steel stool (6) is fixed on the upper floor slab (1). The described wire saw machine (8) includes a machine base, a power station, a driving wheel, a guiding wheel and a diamond wire saw. The diamond wire saw of the wire saw machine is sleeved on the concrete member (3) between the upper floor slab (1) and the lower floor slab (2).
2. The static cutting device for high-altitude concrete structures according to claim 1, characterized in that: The described steel stool (6) includes a horizontal bearing beam (64). Horizontally welded and fixed to the lower end surfaces at both ends of the bearing beam (64) are supporting beams (63) that are horizontal and perpendicular to the bearing beam (64). Vertically welded and fixed to both ends of the supporting beam (63) are columns (62). Welded and fixed to the lower end of the column (62) is a steel backing plate (61). The steel backing plate (61) is fixedly connected to the upper floor slab (1) by expansion bolts.
3. The static cutting device for high-altitude concrete structures according to claim 2, characterized in that: A lifting tool is provided at the top of the described electric hoist (7). A welded lifting ring (20) is fixedly connected to the lifting tool. The welded lifting ring (20) is sleeved and fixed on the bearing beam (64).
4. The static cutting device for high-altitude concrete structures according to claim 2, characterized in that: The concrete member (3) between the upper floor slab (1) and the lower floor slab (2) is a horizontal cross beam (31); Two groups of auxiliary hoisting mechanisms are provided on the cross beam (31). A through hole (11) opposite to the steel wire rope (4) is formed on the upper floor slab (1). The steel wire rope (4) is inserted into the through hole (11) of the upper floor slab (1).
5. The static cutting device for high-altitude concrete structures according to claim 2, characterized in that: The concrete member (3) between the upper floor slab (1) and the lower floor slab (2) is a vertical column (32). One group of auxiliary hoisting mechanisms is provided on the column (32). The wide cloth belt (5) on the auxiliary hoisting mechanism is tied to the upper part of the column (32). Main reinforcement bars (10) are exposed by chiseling on one side of the upper part of the column (32). The wide cloth belt (5) is inserted between the main reinforcement bars (10) of the column (32).
6. The static cutting device for high-altitude concrete structures according to claim 1, characterized in that: The machine base of the described wire saw machine (8) is fixedly connected to the lower floor slab (2) by expansion bolts.
7. The static cutting device for high-altitude concrete structures according to claim 1, characterized in that: An auxiliary support (9) is provided on the outer side of the concrete member (3). The auxiliary support (9) includes an auxiliary beam (91) parallel to the concrete member (3). At both ends of the auxiliary beam (91) are located at both ends of the wide cloth belt (5), and respectively welded and fixed to the auxiliary beam (91) are steel I-beams (92) perpendicular to the auxiliary beam (91). The steel I-beams (92) abut against the side wall on the outer side of the concrete member (3). At both ends of the steel I-beams (92), several screw rods (93) are respectively inserted and fixed. An inner clamping plate (94) abuts against the side wall on the inner side of the concrete member (3). The screw rods (93) pass through the inner clamping plate (94) and are screwed and fixed with locking nuts.