Square column forming equipment

Abstract

The invention relates to the technical field of municipal civil engineering, and discloses square column forming equipment which comprises a square column mold with a U-shaped cross section and a mold cover for blocking the upper end of the square column mold, end covers for blocking the side ends of the square column mold are arranged at the two ends of the mold cover correspondingly, and a pouring cavity for pouring a square column is jointly defined by the square column mold, the mold cover and the end covers. The mold cover is provided with a filling port communicated with the pouring cavity, the two side walls of the square column mold, the bottom wall of the square column mold and the mold cover are each provided with a plurality of installation ports distributed at equal intervals in the length direction, the installation ports are provided with hollow shielding covers, and the ends, facing the pouring cavity, of the shielding covers are provided with blocking plates. An electromagnet used for attracting the reinforcement cage placed in the pouring cavity is arranged in the end, away from the pouring cavity, of the shielding cover and connected with a power source connected with a current adjusting device. By adjusting the currents of the electromagnets in different directions, the purpose of adjusting the magnetic attraction force of the corresponding electromagnets to the reinforcement cage can be achieved, and therefore the position of the reinforcement cage in the square column mold can be conveniently adjusted.

Description

Technical Field

[0001] The invention relates to the technical field of municipal civil engineering, and in particular to a square column forming device. Background Art

[0002] During the prefabrication process of the square column, a steel cage needs to be placed in the square column mold, and then concrete is added to the square column mold. When pouring concrete, the steel cage needs to be in the center of the square column mold, that is, there is a certain distance between the steel cage and the inner wall of the square column mold to avoid exposed reinforcement after pouring concrete. In order to make a gap between the steel cage and the inner wall of the square column mold, the general practice is to add a spacer between the steel cage and the inner wall of the square column. With the support of the spacer, there is a gap between the steel cage and the inner wall of the square column mold; however, this method has the following problems:

[0003] After the concrete solidifies, one side of the pad is flush with the side of the square column. In order to make the pad support the steel cage stably, the pad needs to be designed to be larger in size. At the same time, the particle shape of the gravel in the concrete has the requirement that "the shape standard of premixed concrete crushed stone is measured by the content of needle and flake particles (that is, the content of needle and flake particles in the crushed stone)"; however, because the surface of the pad is relatively smooth, on the one hand, the contact area between the pad and the concrete is small, and on the other hand, the shape of the pad does not meet the requirements of premixed concrete crushed stone, which leads to a loose bond between the pad and the concrete, affecting the strength of the overall structure of the square column. Summary of the invention

[0004] In view of the shortcomings of the prior art, the purpose of the present invention is to provide a square column forming device to solve the problems mentioned in the above background technology.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A square column forming device comprises a square column mold with a U-shaped cross-section and a mold cover for sealing the upper end of the square column mold, the two ends of the mold cover are respectively provided with end caps for sealing the side ends of the square column mold, the square column mold, the mold cover and the end caps together form a casting cavity for casting the square column, the mold cover is provided with a filling port connected to the casting cavity, the two side walls of the square column mold, the bottom wall of the square column mold and the mold cover are all provided with a plurality of equally distributed installation ports along the length direction, the installation port is provided with a hollow shielding cover, the shielding cover is provided with a blocking plate flush with the edge of the installation port at one end facing the casting cavity, the shielding cover is provided with an electromagnet for adsorbing a steel cage placed in the casting cavity at one end away from the casting cavity, and the electromagnet is connected to a power supply connected to a current regulating device.

[0007] Furthermore, the shielding cover is equipped with an indicating device for detecting the position of the steel cage in the casting cavity.

[0008] Furthermore, the indicating device includes a guide cylinder, an indicating disk, a connecting rod, an elastic member and a magnet block for adsorbing the steel cage, the guide cylinder includes a shielding section distributed close to the casting cavity and a transparent section distributed away from the casting cavity, at least a portion of the shielding section extends into the interior of the shielding cover, the transparent section is located outside the shielding cover, a cover plate is provided at one end of the shielding section close to the casting cavity, a cylinder cover is provided at one end of the transparent section away from the casting cavity, scale lines are provided on the outer surface of the transparent section, the magnet block is slidably connected to the shielding section, the indicating disk is slidably connected to the transparent section, the two ends of the connecting rod are respectively connected to the magnet block and the indicating disk, and the two ends of the elastic member are respectively connected to the indicating disk and the cylinder cover.

[0009] Furthermore, the elastic member is an elastic rope, and a first blind hole is formed in a depression at one end of the indicator disk close to the tube cover, and a second blind hole is formed in a depression at one end of the tube cover close to the indicator disk, and the first blind hole and the second blind hole are both coaxially arranged with the tube cover, and the two ends of the elastic member are respectively connected to the first blind hole and the second blind hole.

[0010] Furthermore, the connecting rod is fixedly connected to a carrier plate at one end away from the indicator plate, and the magnet block is bonded to the carrier plate by glue.

[0011] Furthermore, the two side walls of the square column mold are provided with a plurality of guide sleeves connected to the casting cavity, the guide sleeves are plugged with limit rods for limiting the position of the steel cage, and fasteners are installed between the guide sleeves and the limit rods.

[0012] Furthermore, the shielding cover located at the bottom of the square column mold is provided with a steel cage top-pushing adjustment device, and the steel cage top-pushing adjustment device includes two electric push rods vertically arranged at the bottom of the shielding cover, and the end of the shielding cover away from the casting cavity is provided with a through hole for the movable end of the electric push rod to pass through, and the movable end of the electric push rod is connected to a push rod for lifting the steel cage, and the blocking plate located at the bottom of the square column mold is provided with a guide hole matching the push rod, and the end of the push rod away from the electric push rod is plugged and connected to the guide hole.

[0013] Furthermore, the push rod is wrapped with a sealing sleeve, and the outer diameter of the sealing sleeve is equal to the inner diameter of the guide hole.

[0014] Furthermore, the cylinder body of the electric push rod is connected with a Z-shaped plate, a protrusion is fixedly provided on the bottom of the shielding cover, and one end of the Z-shaped plate away from the electric push rod is connected to the protrusion through a screw.

[0015] Furthermore, a first support is connected and fixed at one side edge of the bottom of the square column mold, and a second support is connected and fixed at the other side edge of the bottom of the square column mold. The first support and the second support are symmetrically distributed L-shaped structures.

[0016] Furthermore, the shielding cover is provided with a threading tube at one end away from the casting cavity, and the threading tube is provided with a threading hole communicated with the inner cavity of the shielding cover.

[0017] Compared with the prior art, the present invention provides a square column forming device, which has the following beneficial effects:

[0018] 1. Electromagnets are installed on the four sides of the mold formed by the square column mold and the mold cover. By installing the electromagnet in the space formed by the shielding cover and the blocking plate, the electromagnet can only adsorb the steel cage after being energized. The electromagnets in four directions adsorb the steel cage, so that the steel cage is suspended in the casting cavity formed by the square column mold and the mold cover. There is no need to use a pad. The purpose of adjusting the magnetic attraction of the corresponding electromagnet to the steel cage can be achieved by adjusting the current of the electromagnet in different directions, thereby facilitating the adjustment of the position of the steel cage in the square column mold.

[0019] 2. Install a guide cylinder at the shielding cover, and slide a magnet block for adsorbing the steel cage inside the guide cylinder. When the steel cage is offset, the distance between the steel cage and the magnet block deviated to one side is reduced. At this time, the magnetic attraction between the magnet block and the steel cage increases, and then the magnet block drives the indicator disk to slide in the transparent section through the connecting rod; the offset state of the steel cage can be judged by observing the positions of the two indicator disks on the opposite side in the corresponding transparent section, and the position of the steel cage can be adjusted by adjusting the current of the electromagnet on the opposite side, and the adjustment state of the steel cage can be judged by the positions of the two indicator disks on the opposite side, so that the position of the steel cage can be easily fine-tuned.

[0020] 3. After placing the steel cage in the square column mold, control the electric push rod to extend, and then the electric push rod drives the push rod to move, and the push rod pushes the steel cage upward, so that the steel cage is in the center area of ​​the square column mold, and then the electromagnet is energized to absorb and pull the steel cage, so as to shorten the displacement of the steel cage adjustment.

[0021] 4. When pouring concrete, first insert the limit rod into the guide sleeve, and use the fastener to lock and limit the position of the limit rod, so that the limit rod can provide auxiliary support for the steel cage in the square column mold to prevent the steel cage from being impacted and deviating too much when pouring concrete. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0023] Figure 1It is a schematic diagram of the three-dimensional structure of the present invention;

[0024] Figure 2 for Figure 1 The enlarged schematic diagram at A in the middle;

[0025] Figure 3 It is a schematic diagram of the assembly of the electromagnet, the guide tube, the shielding cover and the square column mold;

[0026] Figure 4 The figure is a schematic diagram of the assembly of the magnet block, the connecting rod and the indicator plate;

[0027] Figure 5 This is a three-dimensional diagram of the square column mold;

[0028] Figure 6 This is a three-dimensional image of the square column mold from another perspective;

[0029] Figure 7 It is a schematic diagram of the assembly of the end cover and the mold cover;

[0030] Figure 8 is a three-dimensional diagram of the shielding cover;

[0031] Fig. 9 This is a three-dimensional image of the shield from another perspective;

[0032] Fig.10 A three-dimensional diagram of the blocking plate;

[0033] Fig.11 This is a schematic diagram of the assembly of the electric push rod, shielding cover, blocking plate and square column mold.

[0034] 1. Square column mold; 2. Mold cover; 3. Filling port; 4. End cover; 5. First support; 6. Shielding cover; 7. Second support; 8. Shielding section; 9. Transparent section; 10. Cylinder cover; 11. Threading tube; 12. Electromagnet; 13. Connecting rod; 14. Indicator plate; 15. Elastic rope; 16. Carrying plate; 17. Magnet block; 18. Blocking plate; 19. Cover plate; 20. Mounting port; 21. Positioning hole; 22. Mounting hole; 23. Push rod; 24. Z-shaped plate; 25. Electric push rod; 26. Screw; 27. Bump; 28. Limit rod; 29. ​​Guide sleeve. DETAILED DESCRIPTION

[0035] The technical solution of the present invention will be described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0036] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0037] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0038] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0039] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first feature is in direct contact with the second feature, or the first feature and the second feature are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0040] The present invention is further described in detail below through detailed embodiments in conjunction with the accompanying drawings.

[0041] Example 1

[0042] In order to solve the defects of insufficient overall structural strength of the square column and weak bonding between the pads and concrete caused by setting pads in the square column mold to support the steel cage by conventional technical means, the present embodiment provides a square column forming device that can retain a distance between the steel cage and the square column mold without setting pads.

[0043] Please refer to the figure, the square column forming equipment provided in this embodiment includes a square column mold 1 with a U-shaped cross-section and a mold cover 2 for blocking the upper end of the square column mold 1, and the two ends of the mold cover 2 are respectively provided with end caps 4 for blocking the side ends of the square column mold 1. The square column mold 1, the mold cover 2 and the end caps 4 together form a casting cavity for casting square columns, and the mold cover 2 is provided with a filling port 3 connected to the casting cavity. The square column mold, the mold cover and the two end caps are enclosed as a mold for prefabricating square columns. The square column is prepared by first placing a steel cage in the casting cavity and then adding concrete to the casting cavity through the filling port.

[0044] In this embodiment, specifically, the two side walls of the square column mold 1, the bottom wall of the square column mold 1 and the mold cover 2 are all provided with a plurality of equally spaced rectangular installation openings 20 along the length direction, the installation opening 20 is provided with a hollow shielding cover 6, the shielding cover 6 is provided with a plugging plate 18 flush with the edge of the installation opening 20 at one end facing the casting cavity, and the shielding cover 6 is provided with an electromagnet 12 for adsorbing the steel cage placed in the casting cavity at one end away from the casting cavity, and the electromagnet 12 is connected to a power supply connected to a current regulating device. Electromagnets are installed on the four sides of the mold formed by the square column mold and the mold cover, and by installing the electromagnet in the space formed by the shielding cover and the plugging plate, the electromagnet can only adsorb the steel cage after being energized, and the electromagnets in four directions all adsorb the steel cage, so that the steel cage is suspended in the casting cavity formed by the square column mold and the mold cover, without using a pad, and only by adjusting the current of the electromagnet in different directions, the purpose of adjusting the magnetic attraction of the corresponding electromagnet to the steel cage can be achieved, thereby facilitating the adjustment of the position of the steel cage in the square column mold.

[0045] In some specific implementations, specifically, the power supply can specifically adopt a conventional DC power supply module product, and the current regulating device includes an ammeter and a current regulating knob. By observing the reading on the ammeter, the output current is directly adjusted by twisting the current regulating knob to obtain the required current, so as to control the magnetic attraction force generated by the electromagnet, thereby facilitating the adjustment of the position of the steel cage in the square column mold.

[0046] In this embodiment, a first support 5 is connected and fixed to one side edge of the bottom of the square column mold 1, and a second support 7 is connected and fixed to the other side edge of the bottom of the square column mold 1. The square column mold is supported by the first support and the second support. Specifically, as an example, the first support 5 and the second support 7 are symmetrically distributed L-shaped structures.

[0047] In some specific embodiments, the shielding cover 6 is provided with a threading tube 11 at one end away from the casting cavity, and the threading tube 11 is provided with a threading hole connected to the inner cavity of the shielding cover 6. Through the threading hole on the threading tube, a channel can be formed for inserting the wire connected to the electromagnet.

[0048] In some specific embodiments, the two side walls of the square column mold 1 are provided with a plurality of guide sleeves 29 connected to the pouring cavity, the guide sleeves 29 are plugged with limit rods 28 for limiting the position of the steel cage, and fasteners are installed between the guide sleeves 29 and the limit rods 28. When pouring concrete, the limit rods 28 are first inserted into the guide sleeves 29, and the position of the limit rods 28 is locked and limited by the fasteners, so that the limit rods 28 provide auxiliary support for the steel cage in the square column mold 1, preventing the steel cage from being impacted and deviating too much when pouring concrete.

[0049] Specifically, the fastener may be a fastening nut, the outer surface of the guide sleeve has a thread connected to the fastening nut, and the relative position of the guide sleeve and the limit rod can be limited by the fastening nut. In addition, the fastener may also be a fastening nut, the end of the limit rod has a thread connected to the fastening nut, so that the relative position of the guide sleeve and the limit rod is limited by the installation of the fastening nut.

[0050] Preferably, the guide sleeve 29 and the shielding cover 6 are staggered and reasonably arranged, so that the force can be balanced, thereby assisting in supporting the steel cage more stably.

[0051] Example 2

[0052] When pouring concrete into the pouring cavity, the force balance of the steel cage is easily broken by the impact of the concrete, and it is difficult to observe the position of the steel cage after it is covered by the concrete. In order to solve this problem, this embodiment further improves the square column forming equipment in embodiment 1.

[0053] Please refer to the figure. This embodiment provides an improved square column forming equipment, and its structure is optimized and improved on the basis of embodiment 1.

[0054] Specifically, in this embodiment, an indicating device for detecting the position of the steel cage in the casting cavity is installed on the shielding cover 6. The indicating device includes a guide cylinder, an indicating disk 14, a connecting rod 13, an elastic member, and a magnet block 17 for adsorbing the steel cage. The guide cylinder includes a shielding section 8 distributed near the casting cavity and a transparent section 9 distributed away from the casting cavity. At least a part of the shielding section 8 extends into the interior of the shielding cover 6. The transparent section 9 is located outside the shielding cover 6. A cover plate 19 is provided at one end of the shielding section 8 near the casting cavity, and a cylinder cover 10 is provided at one end of the transparent section 9 away from the casting cavity. The outer surface of the transparent section 9 is provided with scale lines. The magnet block 17 is slidably connected to the shielding section 8, and the indicating disk 14 is slidably connected to the transparent section 9. The two ends of the connecting rod 13 are respectively connected to the magnet block 17 and the indicating disk 14, and the two ends of the elastic member are respectively connected to the indicating disk 14 and the cylinder cover 10. A guide cylinder is installed at the shielding cover, and a magnet block for adsorbing the steel cage is slidably installed in the guide cylinder. When the steel cage is offset, the distance between the steel cage and the magnet block deviated to one side is reduced. At this time, the magnetic attraction between the magnet block and the steel cage increases, and then the magnet block drives the indicator disk to slide in the transparent section through the connecting rod; the offset state of the steel cage can be judged by observing the positions of the two indicator disks on the opposite side in the corresponding transparent section, and the position of the steel cage can be adjusted by adjusting the current of the electromagnet on the opposite side, and the adjustment state of the steel cage can be judged by the positions of the two indicator disks on the opposite side, so that the position of the steel cage can be conveniently fine-tuned.

[0055] As a preferred embodiment, the guide cylinder is centrally installed in the middle of the shielding cover 6. Specifically, the shielding cover 6 is provided with a positioning hole 21 for fixing the guide cylinder in the middle of the end away from the casting cavity, the electromagnet 12 is recessed to form a through hole distributed therethrough, and the middle of the blocking plate 18 is provided with a mounting hole 22, the positioning hole 21, the through hole and the mounting hole 22 are coaxially distributed, the end of the guide cylinder close to the casting cavity is fixedly connected to the mounting hole 22, the end of the guide cylinder away from the casting cavity is fixedly connected to the positioning hole 21, and the cover plate 19 on the guide cylinder is flush with the blocking plate 18. In this way, the positioning hole on the shielding cover, the through hole on the electromagnet, and the mounting hole on the blocking plate together provide space for the installation of the guide cylinder.

[0056] In some specific implementations, the barrel cover 10 is connected and installed with the transparent section 9 by means of threaded connection, so as to facilitate the assembly of the indicating device.

[0057] In some specific embodiments, the elastic member is an elastic rope 15, one end of the indicator plate 14 close to the cylinder cover 10 is recessed to form a first blind hole, and one end of the cylinder cover 10 close to the indicator plate 14 is recessed to form a second blind hole, the first blind hole and the second blind hole are both coaxially arranged with the cylinder cover 10, and the two ends of the elastic member are respectively connected to the first blind hole and the second blind hole. The elastic member adopts the elastic rope 15, which is convenient for restoring the indicator plate 14 to its original position, and the connection stability of the elastic rope with the cylinder cover and the indicator plate is improved by respectively adhering the two ends of the elastic rope 15 to the first blind hole and the second blind hole.

[0058] In some specific embodiments, the connecting rod 13 is fixedly connected to a carrier plate 16 at one end away from the indicator plate 14, and the magnet block 17 is glued to the carrier plate 16. By providing the carrier plate, a stable connection between the magnet block and the connecting rod can be achieved.

[0059] In some specific implementations, the guide tube is a hollow cylindrical tube structure, and the outer diameter of the carrier plate 16 is less than or equal to the outer diameter of the magnet block 17 .

[0060] Example 3

[0061] Since the steel cage is directly placed in the square column mold 1, and then the steel cage is centered by adjusting the current of the electromagnet 12, the displacement of the steel cage during this process is large, which increases the time spent on adjusting the position of the steel cage. In order to solve this problem, this embodiment further improves the square column forming equipment in embodiment 1.

[0062] Please refer to the figure, this embodiment provides an improved square column forming device, and its structure is optimized and improved on the basis of embodiment 1. In this embodiment, the shielding cover 6 located at the bottom of the square column mold 1 is provided with a steel cage push adjustment device, which can push the steel cage upward.

[0063] Specifically, the steel cage push adjustment device includes two electric push rods 25 symmetrically arranged vertically at the bottom of the shielding cover 6. The end of the shielding cover 6 away from the casting cavity is provided with a through hole through which the movable end of the electric push rod 25 passes. The movable end of the electric push rod 25 is connected to a push rod 23 for lifting the steel cage. The blocking plate 18 located at the bottom of the square column mold 1 is provided with a guide hole that matches the push rod 23. The end of the push rod 23 away from the electric push rod 25 is plugged and connected to the guide hole. During the initial installation, the upper end of the push rod is flush with the upper surface of the blocking plate. When the steel cage is placed in the square column mold, the electric push rod is controlled to extend, and then the electric push rod drives the push rod to move, and the push rod pushes the steel cage upward, so that the steel cage is in the center area of ​​the square column mold, and then the electromagnet is energized to adsorb and pull the steel cage, so as to shorten the displacement of the steel cage adjustment.

[0064] In some specific implementations, the push rod 23 is wrapped with a sealing sleeve, and the outer diameter of the sealing sleeve is equal to the inner diameter of the guide hole, which can achieve a good sealing effect and does not affect the up and down movement of the push rod.

[0065] In some specific embodiments, the cylinder body of the electric push rod 25 is connected with a Z-shaped plate 24, and a protrusion 27 is fixedly provided at the bottom of the shielding cover 6, and one end of the Z-shaped plate 24 away from the electric push rod 25 is connected to the protrusion 27 through a screw 26. More specifically, one end of the Z-shaped plate 24 away from the electric push rod 25 is fitted with the protrusion 27, and a vertical hole is provided at the position where the Z-shaped plate 24 and the protrusion 27 are fitted, and a threaded hole is correspondingly provided on the protrusion 27, and one end of the screw 26 passes through the vertical hole and is connected with the threaded hole, so that the electric push rod 25 is locked and fixed to the bottom of the shielding cover 6. On the one hand, the electric push rod and the shielding cover can be quickly assembled, and on the other hand, the thickness of the shielding cover mounting screw part is partially increased, the connection strength is improved, and it is not easy to be damaged.

[0066] In addition, the reinforcement cage top-pushing adjustment device provided in this embodiment can also be applied to the square column forming equipment in Example 2.

[0067] The above embodiments are merely illustrative of the concept and technical solution of the present invention, and are not intended to limit the present invention. Anyone familiar with the technology may modify, change, and combine the above embodiments without violating the spirit and scope of the present invention. Therefore, all equivalent modifications or changes made by a person with ordinary knowledge in the technical field without departing from the spirit and technical ideas disclosed by the present invention should still be covered by the claims of the present invention.

[0068] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each implementation mode may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A square column forming device, comprising a square column mold with a U-shaped cross section and a mold cover for blocking the upper end of the square column mold, the two ends of the mold cover are respectively provided with end caps for blocking the side ends of the square column mold, the square column mold, the mold cover and the end caps together form a casting cavity for casting the square column, the mold cover is provided with a filling port connected to the casting cavity, characterized in that: The two side walls of the square column mold, the bottom wall of the square column mold and the mold cover are all provided with a plurality of equally spaced installation openings along the length direction, the installation openings are provided with a hollow shielding cover, the shielding cover is provided with a blocking plate flush with the edge of the installation opening at one end facing the casting cavity, the shielding cover is provided with an electromagnet at the end away from the casting cavity for adsorbing a steel cage placed in the casting cavity, and the electromagnet is connected to a power supply connected to a current regulating device.

2. The square column forming equipment according to claim 1, characterized in that: The shielding cover is equipped with an indicating device for detecting the position of the steel cage in the casting cavity.

3. The square column forming equipment according to claim 2, characterized in that: The indicating device comprises a guide cylinder, an indicating disk, a connecting rod, an elastic member and a magnet block for adsorbing the steel cage. The guide cylinder comprises a shielding section distributed close to the casting cavity and a transparent section distributed away from the casting cavity. At least a portion of the shielding section extends into the interior of the shielding cover, and the transparent section is located outside the shielding cover. A cover plate is provided at one end of the shielding section close to the casting cavity, and a cylinder cover is provided at one end of the transparent section away from the casting cavity. Scale lines are provided on the outer surface of the transparent section. The magnet block is slidably connected to the shielding section, and the indicating disk is slidably connected to the transparent section. Both ends of the connecting rod are respectively connected to the magnet block and the indicating disk, and both ends of the elastic member are respectively connected to the indicating disk and the cylinder cover.

4. The square column forming equipment according to claim 3, characterized in that: The elastic member is an elastic rope, one end of the indicator disk close to the cylinder cover is recessed to form a first blind hole, and one end of the cylinder cover close to the indicator disk is recessed to form a second blind hole, the first blind hole and the second blind hole are both coaxially arranged with the cylinder cover, and the two ends of the elastic member are respectively connected to the first blind hole and the second blind hole.

5. The square column forming equipment according to claim 3, characterized in that: The connecting rod is fixedly connected with a carrier plate at one end away from the indicating plate, and the magnet block is bonded to the carrier plate by glue.

6. The square column forming equipment according to claim 1, characterized in that: The two side walls of the square column mold are provided with a plurality of guide sleeves connected with the casting cavity, the guide sleeves are plugged with limit rods for limiting the position of the steel cage, and fasteners are installed between the guide sleeves and the limit rods.

7. The square column forming equipment according to claim 1, characterized in that: The shielding cover located at the bottom of the square column mold is provided with a steel cage top-pushing adjustment device, which includes two electric push rods vertically arranged at the bottom of the shielding cover. The end of the shielding cover away from the casting cavity is provided with a through hole through which the movable end of the electric push rod passes. The movable end of the electric push rod is connected to a push rod for lifting the steel cage. The blocking plate located at the bottom of the square column mold is provided with a guide hole matching the push rod, and the end of the push rod away from the electric push rod is plugged and connected to the guide hole.

8. The square column forming equipment according to claim 7, characterized in that: The push rod is wrapped with a sealing sleeve, and the outer diameter of the sealing sleeve is equal to the inner diameter of the guide hole.

9. The square column forming equipment according to claim 7, characterized in that: The cylinder body of the electric push rod is connected with a Z-shaped plate, a protrusion is fixedly provided at the bottom of the shielding cover, and one end of the Z-shaped plate away from the electric push rod is connected with the protrusion through a screw.

10. The square column forming equipment according to any one of claims 1 to 9, characterized in that: A first support is connected and fixed to one side edge of the bottom of the square column mold, and a second support is connected and fixed to the other side edge of the bottom of the square column mold. The first support and the second support are symmetrically distributed L-shaped structures.

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