Magnetic type formwork based on high-precision concrete beam reverse construction method and using method

Abstract

The invention relates to the technical field of embedded part positioning, in particular to a magnetic type formwork based on a high-precision concrete beam reverse construction method and a using method. Comprising a bottom die and side dies, embedded part grooves are formed in the upper end face of the bottom die, a magnetic type embedded part positioning mechanism is arranged on the lower end face, under each embedded part groove, of the bottom die, and the magnetic type embedded part positioning mechanisms are used for positioning and demolding of embedded parts; the magnetic type embedded part positioning mechanism comprises an iron column fixed to the lower end face of the bottom die and a wire coil surrounding the peripheral side of the iron column. The device can achieve the dual effects of embedded part fixing and auxiliary demolding, the problems that the number of embedded parts of a high-precision concrete prefabricated part is large, positioning is difficult, and demolding adsorption force is large are effectively solved, and meanwhile formwork deformation or damage during demolding can be effectively avoided.

Description

Technical Field

[0001] The invention relates to the technical field of embedded part positioning, and in particular to a magnetic suction type template based on a high-precision concrete beam reverse construction method and a use method thereof. Background Art

[0002] Maglev trains have high speeds, large impact loads, high precision requirements for vehicle travel systems, and long design service life, which places more stringent requirements on the prefabrication and installation of track beams. In order to meet the precision requirements for track beam prefabrication, the inverted casting construction process is usually adopted, and the inverted construction method has high requirements for the positioning and demoulding convenience of embedded parts.

[0003] CN 114559527 A provides a reverse construction method for controlling the accuracy of track beams and embedded parts, which effectively improves the manufacturing accuracy of track beams. However, a large amount of manpower is required to fix the metal embedded parts during the positioning of the embedded parts, and there is a problem of jamming between the embedded parts and the reserved grooves of the template during the demoulding process. Summary of the invention

[0004] In view of the above situation, in order to overcome the defects of the prior art that high-precision track beams have high precision requirements, a large number of embedded parts, conventional construction methods are difficult to ensure the accuracy of concrete prefabrication and have large demoulding adsorption force, the present invention provides a magnetic formwork and a method of use based on the reverse construction method of high-precision concrete beams, which can effectively solve the problems of difficult positioning of embedded parts and large demoulding adsorption force in the reverse construction of high-precision track beams.

[0005] To achieve the above-mentioned object, the present invention provides the following technical solutions: a magnetic formwork based on a high-precision concrete beam reverse construction method, comprising a bottom formwork and a side formwork, wherein the upper end surface of the bottom formwork is provided with an embedded part groove, and a magnetic embedded part positioning mechanism is provided on the lower end surface of the bottom film directly below each embedded part groove, wherein the magnetic embedded part positioning mechanism is used for positioning and demolding the embedded parts;

[0006] The magnetic embedded part positioning mechanism comprises an iron column fixed to the lower end surface of the bottom mold and a wire coil surrounding the outer peripheral side of the iron column.

[0007] Furthermore, the cross section of the iron column is the same in size and shape as the bottom of the embedded part groove.

[0008] Furthermore, the magnetic embedded part positioning mechanism also includes a fixing ring arranged on the lower end surface of the bottom mold, and the wire coil is arranged in the fixing ring.

[0009] Furthermore, the wire coil is connected to a control switch, and the control switch is used to control the current direction of the wire coil.

[0010] Furthermore, the wire coils under each embedded part groove are connected in parallel.

[0011] Furthermore, an iron embedded part is provided in the embedded part groove.

[0012] Furthermore, the wire coil is also connected to a power source.

[0013] The use method of magnetic formwork based on the reverse construction method of high-precision concrete beams,

[0014] (1) The bottom mold is placed on a horizontal surface, and the embedded parts are placed in the embedded parts grooves. After all the parts are placed, the wire coil is energized. The micro-electromagnetic field generated after energization attracts the embedded parts tightly.

[0015] (2) Check and adjust the embedded parts to see whether they are in place accurately and whether they are firmly fixed;

[0016] (3) Tie the reinforcement cage of the precast concrete components and set up the side formwork. After the formwork is set up, pour the concrete.

[0017] (4) When demolding, first energize the wire coil in the forward direction to magnetize the embedded part to form a micro magnet. When lifting, reverse the current and use the mutual repulsion of the magnetic poles to push the embedded part out of the embedded part groove.

[0018] Furthermore, the specific methods include

[0019] (1) The bottom form is placed on a horizontal surface, cleaned and coated with concrete release agent; after the release agent is coated, the embedded parts are placed in the embedded part grooves according to the design requirements of the prefabricated components. After all the parts are placed, the wire coil is energized, and the micro-electromagnetic field generated after the energization attracts the embedded parts tightly;

[0020] (2) Check whether each embedded part is accurately positioned and securely fixed. For embedded parts that are misplaced or not securely attracted by magnets, adjust them individually through the control switch;

[0021] (3) After the embedded parts are installed in place, the steel cage of the precast concrete component is tied and the side formwork is set up. After the formwork is set, the concrete is poured. After the concrete reaches the initial setting, the power supply of the wire coil can be cut off and the maintenance of the precast concrete component can continue;

[0022] (4) When demolding, first energize the wire coil in the forward direction to magnetize the embedded part to form a micro magnet. When lifting, reverse the current and use the mutual repulsion of the magnetic poles to push the embedded part out of the embedded part groove.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] The magnetic formwork based on the reverse construction method of the present invention can play the role of positioning and fixing the iron embedded parts during the construction process through current control; the local micro-electromagnetic formwork can magnetize the embedded parts by changing the direction of the current, and push the embedded parts out of the formwork groove during the demoulding and lifting of the prefabricated components, thereby reducing the adsorption force between the prefabricated components and the formwork. It can play the dual role of fixing the embedded parts and assisting demoulding, effectively solving the problems of a large number of embedded parts, difficult positioning, and large demoulding adsorption force of high-precision concrete prefabricated components, and can effectively avoid deformation or damage to the formwork during demoulding. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the three-dimensional structure of the bottom mold according to an embodiment of the present invention;

[0026] Figure 2 It is a schematic side view of the bottom mold according to an embodiment of the present invention;

[0027] Figure 3 It is a schematic diagram of the structure of a wire coil according to an embodiment of the present invention;

[0028] Figure 4 It is a schematic diagram of the three-dimensional structure of the magnetic embedded part positioning mechanism, the bottom mold and the embedded part according to an embodiment of the present invention;

[0029] Figure 5 The side view structural diagram of the magnetic embedded part positioning mechanism, bottom mold and embedded part of the embodiment of the present invention is shown in FIG.

[0030] In the figure:

[0031] Embedded part 100, bottom mold 200, magnetic embedded part positioning mechanism 300, embedded part groove 2, fixing ring 4, wire coil 5, iron column 6. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0033] Embodiment 1:

[0034] Depend on Figure 1-5 As shown, a magnetic formwork based on a high-precision concrete beam reverse construction method includes a bottom form 200 and a side form, wherein the upper end surface of the bottom form 200 is provided with an embedded part groove 2, and a magnetic embedded part positioning mechanism 300 is provided on the lower end surface of the bottom form directly below each embedded part groove 2, and the magnetic embedded part positioning mechanism 300 is used for positioning and demolding the embedded part 100;

[0035] The magnetic embedded part positioning mechanism 300 includes an iron column 6 fixed to the lower end surface of the bottom mold 200, and a wire coil 5 surrounding the outer peripheral side of the iron column 6. The cross-section of the iron column 6 is the same size and shape as the bottom of the embedded part groove 2. The magnetic embedded part positioning mechanism 300 also includes a fixing ring 4 arranged on the lower end surface of the bottom mold 200, and the wire coil 5 is arranged in the fixing ring 4. The wire coil 5 is connected to a control switch, and the control switch is used to control the current direction of the wire coil 5. The wire coils 5 under each embedded part groove 2 are connected in parallel. The wire coil 5 is also connected to a power supply. An iron embedded part 100 is arranged in the embedded part groove 2.

[0036] The use method of magnetic formwork based on the reverse construction method of high-precision concrete beams,

[0037] (1) The bottom form 200 is placed on a horizontal surface, cleaned and coated with a concrete release agent; after the release agent is coated, the embedded parts 100 are placed in the embedded part grooves 2 according to the design requirements of the prefabricated components. After all the parts are placed, the wire coil 5 is energized, and the micro-electromagnetic field generated after the energization tightly attracts the embedded parts 100;

[0038] (2) Check whether each embedded part 100 is accurately positioned and securely fixed, and adjust the embedded parts that are misaligned or not securely attracted by magnets individually through the control switch;

[0039] (3) After the embedded parts 100 are installed in place, the steel cage of the precast concrete component is tied and the side formwork is set. After the formwork is set, the concrete is poured. After the concrete reaches the initial setting, the power supply of the wire coil can be cut off and the maintenance of the precast concrete component can continue;

[0040] (4) When demoulding, the wire coil 5 is first energized in the forward direction to magnetize the embedded part 100 to form a micro magnet. When lifting, the current is reversed to push the embedded part 100 out of the embedded part groove 2 by utilizing the mutual repulsion of the magnetic poles.

[0041] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A magnetic formwork based on a high-precision concrete beam reverse construction method, comprising a bottom formwork and a side formwork, characterized in that: The upper end surface of the bottom mold is provided with an embedded part groove, and a magnetic embedded part positioning mechanism is provided on the lower end surface of the bottom mold directly below each embedded part groove, and the magnetic embedded part positioning mechanism is used for positioning and demoulding the embedded part; The magnetic embedded part positioning mechanism comprises an iron column fixed to the lower end surface of the bottom mold and a wire coil surrounding the outer peripheral side of the iron column.

2. The magnetic formwork based on the reverse construction method of high-precision concrete beams according to claim 1 is characterized in that: The cross section of the iron column is the same in size and shape as the bottom of the embedded part groove.

3. The magnetic formwork based on the reverse construction method of high-precision concrete beams according to claim 1 is characterized in that: The magnetic embedded part positioning mechanism also includes a fixing ring arranged on the lower end surface of the bottom mold, and the wire coil is arranged in the fixing ring.

4. The magnetic formwork based on the reverse construction method of high-precision concrete beams according to claim 1 is characterized in that: The wire coil is connected to a control switch, and the control switch is used to control the current direction of the wire coil.

5. The magnetic formwork based on the reverse construction method of high-precision concrete beams according to claim 1 is characterized in that: The wire coils under each embedded part groove are connected in parallel.

6. The magnetic formwork based on the reverse construction method of high-precision concrete beams according to claim 1 is characterized in that: An iron embedded part is arranged in the embedded part groove.

7. The magnetic formwork based on the reverse construction method of high-precision concrete beams according to claim 1 is characterized in that: The wire coil is also connected to a power source.

8. The method for using the magnetic formwork based on the reverse construction method of high-precision concrete beams according to any one of claims 1 to 7, characterized in that: (1) The bottom mold is placed on a horizontal surface, and the embedded parts are placed in the embedded parts grooves. After all the parts are placed, the wire coil is energized. The micro-electromagnetic field generated after energization attracts the embedded parts tightly. (2) Check and adjust the embedded parts to see whether they are in place accurately and whether they are firmly fixed; (3) Tie the reinforcement cage of the precast concrete components and set up the side formwork. After the formwork is set up, pour the concrete. (4) When demolding, first energize the wire coil in the forward direction to magnetize the embedded part to form a micro magnet. When lifting, reverse the current and use the mutual repulsion of the magnetic poles to push the embedded part out of the embedded part groove.

9. The method for using the magnetic formwork based on the reverse construction method of high-precision concrete beams according to claim 1 is characterized in that: (1) The bottom form is placed on a horizontal surface, cleaned and coated with concrete release agent; after the release agent is coated, the embedded parts are placed in the embedded part grooves according to the design requirements of the prefabricated components. After all the parts are placed, the wire coil is energized, and the micro-electromagnetic field generated after the energization attracts the embedded parts tightly; (2) Check whether each embedded part is accurately positioned and securely fixed. For embedded parts that are misplaced or not securely attracted by magnets, adjust them individually through the control switch; (3) After the embedded parts are installed in place, the steel cage of the precast concrete component is tied and the side formwork is set up. After the formwork is set, the concrete is poured. After the concrete reaches the initial setting, the power supply of the wire coil can be cut off and the maintenance of the precast concrete component can continue; (4) When demolding, first energize the wire coil in the forward direction to magnetize the embedded part to form a micro magnet. When lifting, reverse the current and use the mutual repulsion of the magnetic poles to push the embedded part out of the embedded part groove.

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