Magnetic fixing device for prefabricated part mold

Abstract

The invention discloses a magnetic fixing device for a prefabricated part mold. The magnetic fixing device comprises an outer shell, wherein a mounting cavity is formed in the bottom of the outer shell; a magnetic base component is arranged in the mounting cavity in an up-down movable mode; a magnetic control mechanism which is connected with the magnetic base component and can control the magnetic base component to move up and down is arranged at the top of the outer shell; and a mold fixing mechanism for fixing the prefabricated part mold is further arranged on the outer shell. The magnetic fixing device is characterized in that the magnetic base component comprises at least three magnetic conductive fixing blocks, permanent magnets arranged between the adjacent magnetic conductive fixing blocks, and a fastening mechanism for connecting all the magnetic conductive fixing blocks and the permanent magnets into a whole, and grooves are formed in the side surfaces, connected to the permanent magnets, on the magnetic conductive fixing blocks. The magnetic fixing device has the advantages that the permanent magnets can be protected through the structures of the magnetic conductive fixing blocks, the structure and the performance are kept stable in the using process, and the service life is prolonged.

Description

technical field [0001] The invention relates to the field of concrete prefabricated component production, in particular to a magnetic fixing device capable of fixing a prefabricated component mold. Background technique [0002] When making concrete prefabricated components in the field of building construction, it is usually necessary to fix the four sides of the prefabricated component mold on the steel platform. In the original technology, bolts are generally used to connect and fix, but this method has the following defects: (1) It is necessary to drill holes on the steel platform, which will damage the steel platform and surface smoothness, and affect the prefabricated component products after long-term use (2) Due to the different specifications and sizes of the molds, the drilling positions on the platform are different, and frequent drilling operations are required. On the one hand, it is time-consuming and laborious, and on the other hand, it will further damage the ...

AI Technical Summary

Problems solved by technology

In the original technology, bolts are generally used to connect and fix, but this method has the following defects: (1) It is necessary to drill holes on the steel platform, which will damage the steel platform and surface smoothness, and affect the prefabricated component products after long-term use (2) Due to the different specifications and sizes of the molds, the drilling positions on the platform are different, and frequent drilling operations are required. On the one hand, it is time-consuming and laborious, and on the other hand, it will further damage the platform; It is time-consuming and labor-intensive to tighten and disassemble, and the operation is inconvenient, which affects production efficiency

[0004] However, the above-mentioned magnetic fixing box still has the following deficiencies in actual application: (1) Cutting and welding processes are required to make steel rings, and it is difficult to ensure that the size and flatness of each steel ring are accurate during strip cutting and welding , there will be tolerances, so when it is wrapped in the magnet, there will be a gap. Over time, impurities such as prefabricated concrete will penetrate into the gap between the steel ring and the surface of the magnet, which will cause the steel ring to bulge. Under the friction of strong suction It is easy to break; (2) On the other hand, in order not to affect the magnetic attraction, the thickness of the steel ring itself is made thinner, so it is also easy to break and wear under long-term friction. After the steel ring is broken or damaged, the magnet assembly The surface is uneven, so the magnetic fixing box cannot work normally. Therefore, there is a hidden danger in the prior art to use a steel ring to wrap the magnet, which affects the service life of the magnetic fixing box, and the structural reliability is not strong; (3) the horizontal direction is usually in the magnet A half-thread thread hole is set in the component, and then the bolt is locked through the bolt. Due to the different pitch height of the structure, the bolts in the part without teeth in the hole will be in a suspended state, the flatness will be reduced, and the bonding force will be reduced when adsorbed to the platform. , after repeated use, it is easy to cause problems such as loosening and misalignment. In addition, mud is easy to pour in from the gap, which will cause bulges on the surface of the steel ring after hardening, which will further affect the service life of the steel ring and easily cause the steel ring to break. There are hidden dangers in the use effect; there are also some products that use full-thread threaded holes, and then use long bolts to pass through them for fixation. This kind of bolts penetrate the threaded holes in one direction, which will cause uneven force on the magnet assembly module from one side to the other. (4) After opening a through hole vertically and passing through the screw, in order not to affect the magnetic force, the surface of the screw is lower than the surface of the surrounding magnet components, and it is easy to pour impurities such as concrete during use. It is more difficult to maintain the device after curing, which shortens the product life cycle; (5) The steel ring wrapping structure is adopted. Since the steel ring must have a certain width, the size adjustment of the permanent magnet is not flexible enough to reduce the cost

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