A beam plate negative bending moment anchorage box demolition tool

Abstract

The utility model provides a kind of beam plate negative bending moment anchorage box dismantling tool, it is related to beam plate manufacturing auxiliary equipment technical field, solve the existing anchorage box when dismantling, by rough and brutal way dismantling, the easy deformation damage of formwork, greatly reduce the turnover times of formwork Problem.The utility model includes support plate, support plate fixed component for being adsorbed on the beam plate surface for being set in the length direction both ends of support plate, a group of screw rod for force transmission dismantling anchorage box for being rotatably connected in the length direction both ends of support plate, screw rod nut for being used for cooperation with screw rod for being installed in the skirt of anchorage box, the screw hole of screw rod nut is aligned with screw rod through hole, screw rod is rotatably threaded through support plate and screw rod nut screw connection and passes through screw rod through hole and is resisted to beam plate.The utility model has the beneficial effects of: reducing worker's labor amount, increasing work efficiency, reducing anchorage box damage probability, increasing anchorage box turnover times, reducing construction cost.

Description

Technical Field

[0001] This utility model relates to the technical field of auxiliary equipment for beam and slab manufacturing, and specifically to a tool for removing negative bending moment anchor boxes for beams and slabs. Background Technology

[0002] In precast beam and slab formwork, negative moment anchor boxes are a type of irregularly shaped, small-scale formwork that is difficult to remove. Traditional construction methods involve workers forcibly removing them by hammering, prying, or pulling. This approach is not only labor-intensive and time-consuming, but also extremely inefficient and prone to damaging the precast product. Since the concrete strength is not yet sufficient at the time of demolding, excessive hammering may disturb the concrete at the negative moment point, which can easily cause cracking during tensioning, affecting the overall quality. Furthermore, this rough removal method can easily deform and damage the formwork, significantly reducing the number of times the formwork can be reused. Utility Model Content

[0003] The purpose of this utility model is to solve the problem that when existing anchor boxes are removed in a rough manner, the template is easily deformed and damaged, thus greatly reducing the number of times the template can be reused.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A tool for removing a negative bending moment anchor box for beams and slabs is characterized by comprising: a support plate; support plate fixing assemblies disposed at both ends of the support plate along its length for adhering to the beam and slab surface; a set of screws rotatably connected to both ends of the support plate along its length for transmitting force to remove the anchor box; and screw nuts installed on the skirt of the anchor box for cooperating with the screws. A screw through hole is provided on the skirt of the anchor box at the corresponding position of the screw nut for the screw to pass through. The screw hole of the screw nut is aligned with the screw through hole. The screw rotates through the support plate and is threadedly connected to the screw nut, passing through the screw through hole and abutting against the beam and slab.

[0006] A further improvement is that the support plate has a through hole for the screw to pass through, and a linear bearing is welded to the through hole of the support plate. The screw hole of the linear bearing is aligned with the through hole, and the screw is rotatably connected inside the linear bearing.

[0007] A further improvement is that the support plate fixing assembly includes a support column fixedly connected to the side of the support plate facing the anchor box, a suction cup is provided at the end of the support column facing the anchor box, the support column has a cavity that extends through the support plate, and a piston is slidably disposed in the cavity.

[0008] A further improvement is that a piston handle is fixedly connected to the outer end of the piston.

[0009] A further improvement is that the top of the screw is a hexagonal connector.

[0010] A further improvement is that the screw nut is welded to the anchor box at the screw through hole position.

[0011] A further improvement is that the screw through hole and the screw nut are located between two fixing bolts on the same side of the anchor box.

[0012] Compared with existing technologies, the above technical solution has the following advantages:

[0013] The support plate is fixed to the beam surface and the linear bearing guides and supports the force transmission of the screw. The fixing components make the dismantling more stable and reliable.

[0014] When the screw is pressed against the beam surface and rotates, the strength of the concrete on the beam surface can be tested simultaneously.

[0015] The suction cups ensure that the support plate remains fixed and stable during removal, and this fixing method is simple, quick, and leaves no marks on the beam or slab surface.

[0016] This method of demolding not only checks whether the concrete strength meets the demolding strength requirements, but also avoids workers using sharp objects to knock or pry the concrete or anchor boxes, thus preventing disturbance and damage to the beam and ensuring the integrity of the beam.

[0017] This will reduce the workload of workers, increase work efficiency, reduce the probability of anchor box damage, increase the number of times anchor boxes can be reused, and reduce construction costs. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model 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 some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the structure on the right side of this utility model;

[0021] Figure 3 This is a schematic diagram of the structure of the anchor box before it is removed in this utility model;

[0022] Figure 4 This is the utility model Figure 1 Enlarged view of part A in the image;

[0023] Figure 5This is a structural schematic diagram of the support plate fixing assembly in this utility model.

[0024] Explanation of reference numerals in the attached drawings: 1. Beam plate; 2. Anchor box; 21. Screw through hole; 3. Support plate; 4. Support plate fixing assembly; 41. Support column; 42. Suction cup; 43. Cavity; 44. Piston; 45. Piston handle; 5. Screw; 6. Linear bearing; 7. Screw nut; 8. Fixing bolt; 9. Fixing nut. Detailed Implementation

[0025] See Figures 1-5 As shown, the technical solution adopted in this specific embodiment is: a tool for removing a beam-slab negative bending moment anchor box, including a support plate 3, a support plate fixing assembly 4 set at both ends of the support plate 3 in the length direction for adsorbing onto the surface of the beam-slab 1, a set of screws 5 rotatably connected to both ends of the support plate 3 in the length direction for transmitting force to remove the anchor box 2, and a screw nut 7 installed on the skirt of the anchor box 2 for cooperating with the screws 5. The skirt of the anchor box 2 at the corresponding position of the screw nut 7 is provided with a screw through hole 21 for the screw 5 to pass through. The screw hole of the screw nut 7 is aligned with the screw through hole 21. The screw 5 rotates through the support plate 3 and is threadedly connected to the screw nut 7 and passes through the screw through hole 21 to abut against the beam-slab 1.

[0026] The support plate 3 has a through hole for the screw 5 to pass through. A linear bearing 6 is welded to the through hole of the support plate 3. The screw hole of the linear bearing 6 is aligned with the through hole, and the screw 5 is rotatably connected in the linear bearing 6.

[0027] The support plate fixing assembly 4 includes a support column 41 fixedly connected to the side of the support plate 3 facing the anchor box 2. A suction cup 42 is provided at the end of the support column 41 facing the anchor box 2. The support column 41 has a cavity 42 that extends through the support plate 3. A piston 44 is slidably disposed in the cavity 42.

[0028] The piston 44 is fixedly connected to a piston handle 45 at its outer end.

[0029] The top of the screw 5 is a hexagonal connector.

[0030] The screw nut 7 is welded to the anchor box 2 at the position of the screw through hole 21.

[0031] The screw through hole 21 and the screw nut 7 are located between two fixing bolts 8 on the same side of the anchor box 2.

[0032] The working principle of this utility model is as follows: During the demolding process, first loosen the fixing nut to release the original fixing bolts of the anchor box. Then, place the support plate on one side of the anchor box surface, align the suction cup with the beam surface, and pull the piston through the piston handle to extract the air from the support column, creating a negative pressure between the suction cup and the beam surface to adhere to the beam surface and complete the fixation. This ensures that the support plate remains fixed and stable during removal, and this fixing method is simple, quick, and leaves no marks on the beam surface. Next, thread the screw through the linear bearing thread of the support plate to the screw nut and through the screw through hole to abut against the beam surface. Then, continue to tighten the bolt to apply force to the beam surface. Through the cooperation of the screw and screw nut, the anchor box and beam are moved together. The slab surface separates, and then the anchor box is disassembled. A support plate, fixed to the beam slab surface, along with a linear bearing, guides and supports the force transmission of the screw. Combined with fixing components, this makes dismantling more stable and reliable. Simultaneously, the screw rotates while pressing against the beam slab surface, allowing for simultaneous testing of the concrete strength. This dismantling method not only tests whether the concrete strength meets the dismantling strength requirements but also avoids workers using sharp objects to forcefully knock or pry the concrete or anchor box 2, preventing disturbance and damage to the beam slab and ensuring its integrity. This reduces worker workload, increases work efficiency, decreases the probability of anchor box damage, increases the number of anchor box turnovers, and reduces construction costs.

[0033] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions provided are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of protection of this utility model as defined by the appended claims and their equivalents. Any aspects of this utility model not detailed herein are well-known to those skilled in the art.

Claims

1. A tool for removing negative bending moment anchorage boxes for beams and slabs, characterized in that: The device includes a support plate, support plate fixing assemblies at both ends of the support plate along its length for adhering to the beam surface, a set of screws rotatably connected to both ends of the support plate along its length for transmitting force to remove the anchor box, and screw nuts installed on the skirt of the anchor box for cooperating with the screws. The skirt of the anchor box at the corresponding position of the screw nut has a screw through hole for the screw to pass through. The screw hole of the screw nut is aligned with the screw through hole. The screw rotates through the support plate and is threadedly connected to the screw nut, and passes through the screw through hole to abut against the beam plate.

2. The beam and slab negative bending moment anchorage box removal tool according to claim 1, characterized in that: The support plate has a through hole for the screw to pass through, and a linear bearing is welded to the through hole of the support plate. The screw hole of the linear bearing is aligned with the through hole, and the screw is rotatably connected in the linear bearing.

3. The beam and slab negative bending moment anchorage box removal tool according to claim 1, characterized in that: The support plate fixing assembly includes a support column fixedly connected to the side of the support plate facing the anchor box. A suction cup is provided at the end of the support column facing the anchor box. The support column has a cavity that extends through the support plate. A piston is slidably disposed in the cavity.

4. The beam and slab negative bending moment anchorage box removal tool according to claim 3, characterized in that: A piston handle is fixedly connected to the outer end of the piston.

5. The beam and slab negative bending moment anchorage box removal tool according to claim 1, characterized in that: The top of the screw is a hexagonal connector.

6. The beam and slab negative bending moment anchorage box removal tool according to claim 1, characterized in that: The screw nut is welded to the anchor box at the screw through hole position.

Images