Construction waste electromagnetic iron removal device with protection function

Abstract

The utility model discloses a construction waste electromagnetic iron removal device with a protection function, and relates to the field of construction waste treatment.The construction waste electromagnetic iron removal device comprises a lifting appliance and an electromagnet fixed to the lifting appliance, a plurality of hinged plates are fixed to the top face of the electromagnet, the hinged plates are distributed in the circumferential direction of the electromagnet, and the hinged plates are hinged to protection rods; a protective net is arranged between every two adjacent protective rods, a brake motor is fixed to the lifting appliance, the output end of the brake motor is in transmission connection with a winch, pull ropes are connected to the protective rods, and the other ends of the pull ropes are fixed to the winches. By arranging the protective net, the outer side of an object attracted by the electromagnet can be shielded, the object is prevented from being pinched off and flying out, and the safety is improved; the position of the protective net can be adjusted up and down, so that the magnetic attraction process and the iron putting-down process are prevented from being blocked; in the process of putting down the iron, the protective net can be opened outwards and move upwards, and the iron is not prone to being clamped on the protective net.

Description

Technical Field

[0001] The present application relates to the field of construction waste treatment, and in particular to an electromagnetic iron removal device for construction waste with a protective function. Background Art

[0002] Construction waste contains a variety of materials, including concrete, metal, wood, plastic, rubber, etc. Most metal materials are iron or steel. Because steel can be attracted by magnets, magnetic separation is generally used to remove iron from construction waste.

[0003] The existing utility model patent with announcement number CN207827671U discloses a construction device for sorting construction waste based on electromagnets. The device uses an electromagnet suspended from the free end of the crane boom, a power switch, and a control switch for controlling the magnetic force of the electromagnet. The electromagnet, the power switch, and the control switch are connected in series and can be connected in series with the power supply to form a circuit. When in use, the electromagnet as a hook is placed above the construction waste, and the crane boom is moved after power is turned on to adsorb all the steel waste in the construction waste onto the electromagnet; hoisted to the target position, the power is turned off, and the adsorbed steel waste on the electromagnet falls to form a pile of steel waste, thereby realizing the separation of steel waste from construction waste.

[0004] With respect to the above-mentioned related technologies, the inventors believe that when the electromagnet attracts iron waste, due to the strong suction force, if there are other objects between the iron waste and the electromagnet, the object may be pinched off and ejected outward, posing a safety hazard. Utility Model Content

[0005] The present application provides an electromagnetic iron removal device for construction waste with a protective function, which can shield and protect the circumferential space below the electromagnet to prevent objects from being clamped off and flying outward, thereby improving safety.

[0006] The present application provides a construction waste electromagnetic iron removal device with a protective function, which adopts the following technical solution:

[0007] An electromagnetic iron removal device for construction waste with a protective function comprises a sling and an electromagnet fixed to the sling, a plurality of hinged plates fixed to the top surface of the electromagnet, the hinged plates are distributed along the circumference of the electromagnet, the hinged plates are hinged with protective rods, and a protective net is arranged between adjacent protective rods, a brake motor is fixed to the sling, the output end of the brake motor is transmission-connected to a winch, a pull rope is connected to the protective rod, and the other end of the pull rope is fixed to the winch.

[0008] Through the above technical solution, the brake motor drives the winch to rotate, and all the pull ropes pull the corresponding protective rods at the same time, turning the protective rods upward, and the protective net is also pulled upward, and the protective net cancels the shielding of the bottom of the electromagnet. Then the personnel operate the lifting equipment, put the electromagnet on the construction waste, and then start the magnetic suction, and the electromagnet absorbs the iron. In the process of the electromagnet moving upward, turn off the braking function of the brake motor, then under the action of the gravity of the protective rod itself, the protective rod rotates downward and resets, so that the protective net moves downward to the bottom of the electromagnet, and the protective net shields the object sucked by the electromagnet from the outside to prevent the object from being clamped off and flying out, thereby improving safety.

[0009] Preferably, the protection rod is hinged to the hinge plate through an end portion, and the pull rope is connected to the middle portion of the protection rod.

[0010] Through the above technical solution, the protective rod can be rotated to a vertical upward state so that the protective rod does not block the side wall of the electromagnet. When the electromagnet attracts iron near the wall, the protective rod will not reduce the magnetic attraction range of the electromagnet.

[0011] Preferably, an embedding groove is provided on the protection rod, a pressing block is fixed in the embedding groove by means of bolts, and the pressing block presses and fixes the end of the pull rope in the embedding groove.

[0012] Through the above technical solution, the end of the pull rope is fixed to the protective rod by the pressing block, which has high strength and is easy to disassemble and assemble.

[0013] Preferably, a torsion spring is provided on the hinge shaft outer sleeve of the protection rod and the hinge plate, and two ends of the torsion spring are respectively fixed to the protection rod and the electromagnet, and the elastic force of the torsion spring drives the protection rod to rotate downward.

[0014] Through the above technical solution, the elastic force of the torsion spring drives the protection rod to rotate downward, thereby improving the reliability of the protection rod's downward rotation and reset.

[0015] Preferably, a wire clip is fixed on the top surface of the electromagnet, and the pull rope is slidably inserted into the wire clip.

[0016] Through the above technical solution, the line clamp limits the pull rope to prevent the pull rope from moving around.

[0017] Preferably, a guide groove is provided at the top corner of the end of the protection rod close to the hinged plate, and the pull rope is located in the guide groove.

[0018] Through the above technical solution, the position of the guide groove is used to contact the draw rope, and the arc-shaped guide groove can prevent the draw rope from being broken due to excessive wear.

[0019] Preferably, a reducer is fixed to the sling, the input end of the reducer is fixed to the output end of the brake motor, and the output end of the reducer is fixed to the winch.

[0020] Through the above technical solution, the working condition of the winch requires slow rotation, and the speed of the brake motor output to the winch is reduced by the reducer.

[0021] Preferably, elastic bands are fixed on both sides of the protective net, the elastic bands connect adjacent protective nets, and the protective rod is provided with through holes for the elastic bands to pass through.

[0022] Through the above technical solution, when all the protection bars are rotated upward, the distance between adjacent protection bars first increases and then decreases. This process is caused by the adaptive stretching and shortening of the elastic band, which prevents the protection net from being broken and prevents the protection net from being too loose.

[0023] In summary, the present application includes at least one of the following beneficial technical effects:

[0024] 1. By setting up a protective net, the object attracted by the electromagnet can be shielded from the outside to prevent the object from being broken off and flying out, thus improving safety;

[0025] 2. The position of the protective net can be adjusted up and down to avoid obstruction to the magnetic suction process and the process of putting down the iron;

[0026] 3. In the process of lowering the iron, the protective net can open outward and move upward, and the iron is not easily stuck on the protective net. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 3. It is a three-dimensional diagram of a construction waste electromagnetic iron removal device with a protective function according to an embodiment;

[0028] Figure 2 is a bottom view of the embodiment;

[0029] Figure 3 yes Figure 1 A magnified image of point A;

[0030] Figure 4 yes Figure 1 Enlarged view of point B.

[0031] Explanation of the reference numerals in the accompanying drawings: 1. sling; 2. electromagnet; 3. hinged plate; 4. protection rod; 5. protection net; 11. brake motor; 12. reducer; 13. winch; 14. pull rope; 21. wire clamp; 41. torsion spring; 42. embedded groove; 43. pressure block; 44. guide groove; 51. elastic band; 45. perforation. DETAILED DESCRIPTION

[0032] The present application is further described in detail below in conjunction with the accompanying drawings.

[0033] Reference Figure 1 and Figure 2A construction waste electromagnetic iron removal device with a protective function includes a hanger 1 and an electromagnet 2 fixed to the hanger 1. The hanger 1 is located on the top surface of the electromagnet 2. The hanger 1 is fixed with a plurality of lifting rings for connecting a lifting device. The electromagnet 2 is a device that generates magnetic force at the bottom when powered on and loses the magnetic force when powered off. The electromagnet 2 is a prior art.

[0034] A plurality of hinged plates 3 are fixed on the top surface of the electromagnet 2, and the hinged plates 3 are distributed along the circumference of the electromagnet 2. The hinged plates 3 are hinged with protective rods 4. The number of protective rods 4 in this embodiment is specifically six, and the six protective rods 4 are evenly distributed along the circumference of the electromagnet 2. A protective net 5 is provided between adjacent protective rods 4. The protective rod 4 has a relatively long length, and the end of the protective rod 4 away from the hinged plate 3 hangs down below the bottom surface of the electromagnet 2. The protective net 5 surrounds the bottom space outside the electromagnet 2, as well as the space below the electromagnet 2 close to the electromagnet 2.

[0035] Reference Figure 1 The sling 1 is fixed with a brake motor 11 and a reducer 12. The output end of the brake motor 11 is connected to the winch 13. Specifically, the input end of the reducer 12 is fixed to the output end of the brake motor 11, and the output end of the reducer 12 is fixed to the winch 13. The top of the winch 13 is rotatably connected to the sling 1, and the bottom of the winch 13 is rotatably connected to the electromagnet 2. A pull rope 14 is connected to the protective rod 4. The other end of the pull rope 14 is fixed to the winch 13. The winch 13 is rotated so that the pull rope 14 is wound around the winch 13. The torque output by the brake motor 11 is decelerated by the reducer 12 and transmitted to the winch 13, so that the winch 13 rotates slowly, and the winch 13 gradually rolls up the pull rope 14, thereby pulling the protective rod 4 to rotate upward.

[0036] A wire clip 21 is fixed on the top surface of the electromagnet 2, and the pull rope 14 is slidably inserted into the wire clip 21. The wire clip 21 is made of plastic and is a C-shaped structure with an opening facing upward. The inner diameter of the wire clip 21 is larger than the diameter of the pull rope 14. The pull rope 14 can enter the C-shaped opening of the wire clip 21 through elastic deformation, so that the wire clip 21 limits the pull rope 14 to prevent the pull rope 14 from moving around, and it is also relatively easy to remove the pull rope 14 from the wire clip 21.

[0037] Reference Figure 1 and Figure 3 The hinge shaft of the protection rod 4 and the hinge plate 3 is provided with a torsion spring 41, and the two ends of the torsion spring 41 are respectively fixed to the protection rod 4 and the electromagnet 2, and the elastic force of the torsion spring 41 drives the protection rod 4 to rotate downward. After the protection rod 4 loses the pulling force of the pull rope 14, although the protection rod 4 can rotate downward and reset under the action of its own gravity, the added torsion spring 41 improves the reliability of the reset of the protection rod 4.

[0038] Reference Figure 1 and Figure 4The protective rod 4 is hinged to the hinge plate 3 through the end, and the pull rope 14 is connected to the middle of the protective rod 4. In this way, the protective rod 4 can be rotated to a vertically upward state, so that the protective rod 4 does not block the side wall of the electromagnet 2. When the electromagnet 2 attracts iron near the wall, the protective rod 4 will not reduce the magnetic attraction range of the electromagnet 2.

[0039] The protective rod 4 is provided with an embedding groove 42, in which a pressing block 43 is fixed by bolts, and the pressing block 43 presses and fixes the end of the pull rope 14 in the embedding groove 42. The end of the pull rope 14 is fixed to the protective rod 4 by the pressing block 43, which has high strength and is easy to disassemble and assemble.

[0040] A guide groove 44 is provided at the top corner of the end of the protection rod 4 near the hinge plate 3, and the pull rope 14 is located in the guide groove 44. The guide groove 44 makes the end edge of the protection rod 4 in an arc shape, and this position is used to contact the pull rope 14. Through the arc-shaped guide groove 44, the pull rope 14 is prevented from being broken due to excessive wear.

[0041] Reference Figure 4 Elastic bands 51 are fixed on both sides of the protection net 5, and the elastic bands 51 connect adjacent protection nets 5. The protection rods 4 are provided with perforations 45 for the elastic bands 51 to pass through. There are multiple elastic bands 51 on both sides of each protection net 5 to improve the pulling effect on the protection net 5. The number of perforations 45 corresponds to the number of elastic bands 51. When all the protection rods 4 rotate upward, the spacing between adjacent protection rods 4 increases first and then decreases. This process is caused by the adaptive stretching and shortening of the elastic bands 51, which prevents the protection net 5 from being broken and prevents the protection net 5 from being too loose. The protection net 5 itself can also be deformed, so it will not break.

[0042] The implementation principle of the electromagnetic iron removal device for construction waste with protection function of the present application is: the winch 13 is driven to rotate by the brake motor 11, and all the pull ropes 14 pull the corresponding protection rod 4 at the same time, and the protection rod 4 is rotated upward, then the protection net 5 is also pulled upward, and the protection net 5 cancels the shielding of the bottom of the electromagnet 2. Then the personnel operate the lifting equipment, put the electromagnet 2 on the construction waste, and then start the magnetic attraction, and the electromagnet 2 attracts the iron. In the process of the electromagnet 2 moving up, turn off the braking function of the brake motor 11, then under the action of the gravity of the protection rod 4 itself and the elastic force of the torsion spring 41, the protection rod 4 rotates downward to reset, so that the protection net 5 moves downward to the lower part of the electromagnet 2, and the protection net 5 blocks the object attracted by the electromagnet 2 from the outside to prevent the object from being clamped off and flying outward, thereby improving safety.

[0043] When the sucked iron needs to be put down, first control the brake motor 11 to rotate, so that the pull rope 14 pulls the protective rod 4 to rotate upward, and the protective net 5 gradually opens outward and moves upward, thereby eliminating the obstruction to the iron, and then turn off the power supply of the electromagnet 2, so that all the iron can be put down, and the iron is not easily stuck on the protective net 5.

[0044] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. An electromagnetic iron removal device for construction waste with a protective function, comprising a hanger (1) and an electromagnet (2) fixed to the hanger (1), wherein: A plurality of hinged plates (3) are fixed on the top surface of the electromagnet (2), the hinged plates (3) are distributed along the circumference of the electromagnet (2), the hinged plates (3) are hinged with protective rods (4), and a protective net (5) is arranged between adjacent protective rods (4). The sling (1) is fixed with a brake motor (11), the output end of the brake motor (11) is transmission-connected to a winch (13), a pull rope (14) is connected to the protective rod (4), and the other end of the pull rope (14) is fixed to the winch (13).

2. The electromagnetic iron removal device for construction waste with a protective function according to claim 1 is characterized in that: The protection rod (4) is hinged to the hinge plate (3) through the end portion, and the pull rope (14) is connected to the middle portion of the protection rod (4).

3. The electromagnetic iron removal device for construction waste with a protective function according to claim 2 is characterized in that: The protection rod (4) is provided with an embedding groove (42), a pressing block (43) is fixed in the embedding groove (42) by means of bolts, and the pressing block (43) presses and fixes the end of the pull rope (14) in the embedding groove (42).

4. The electromagnetic iron removal device for construction waste with a protective function according to claim 2 is characterized in that: A torsion spring (41) is provided on the hinge shaft outer sleeve of the protection rod (4) and the hinge plate (3), and the two ends of the torsion spring (41) are respectively fixed to the protection rod (4) and the electromagnet (2), and the elastic force of the torsion spring (41) drives the protection rod (4) to rotate downward.

5. The electromagnetic iron removal device for construction waste with protective function according to claim 1 is characterized in that: A wire clamp (21) is fixed on the top surface of the electromagnet (2), and the pull rope (14) is slidably inserted into the wire clamp (21).

6. The electromagnetic iron removal device for construction waste with a protective function according to claim 2 is characterized in that: A guide groove (44) is provided at the top corner of the end of the protection rod (4) close to the hinge plate (3), and the pull rope (14) is located in the guide groove (44).

7. The electromagnetic iron removal device for construction waste with a protective function according to claim 1 is characterized in that: The sling (1) is fixed with a reducer (12), the input end of the reducer (12) is fixed to the output end of the brake motor (11), and the output end of the reducer (12) is fixed to the winch (13).

8. The electromagnetic iron removal device for construction waste with protective function according to claim 1 is characterized in that: Elastic bands (51) are fixed on both sides of the protection net (5), and the elastic bands (51) connect adjacent protection nets (5). The protection rod (4) is provided with a through hole (45) for the elastic bands (51) to pass through.

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