Safety protection device for reinforcing steel bar straightening operation

Abstract

The utility model relates to a safety protection device for reinforcing steel bar straightening operation. The device comprises a protective box body, a raw material feeding port, an induction magnetic coil and an electrogenerated magnetic field restraining device, the raw material feeding port is formed in one side of the protective box body, and the induction magnetic coil and the electrogenerated magnetic field restraining device are arranged in the protective box body. According to the utility model, high-efficiency safety protection and energy-saving operation in the reinforcing steel bar straightening process are realized.

Description

Technical Field

[0001] This utility model relates to the field of construction safety technology, and in particular to a safety protection device for straightening steel bars. Background Technology

[0002] Rebar straightening is a common operation in construction. However, traditional rebar straightening protection devices have the following shortcomings: First, they lack an effective energy recovery mechanism, resulting in the waste of mechanical energy generated during straightening and failing to achieve efficient energy utilization. Second, they are ineffective at protecting against the swinging motion of rebars during straightening, posing significant safety hazards and easily causing injury to construction workers. Furthermore, traditional devices often have complex structures, and the assembly and disassembly processes are cumbersome, increasing the workload of construction workers, affecting construction efficiency, and extending the construction period. Utility Model Content

[0003] To address the aforementioned technical problems in the background art, this utility model provides a rebar straightening and protection device that achieves efficient and safe protection and energy-saving operation during the rebar straightening process.

[0004] The technical solution of this utility model is as follows: This utility model is a safety protection device for straightening steel bars, and its special feature is that: the safety protection device for straightening steel bars includes a protective box, a raw material inlet, an induction magnetic coil and an electromagnetic field restraint device. The raw material inlet is provided on one side of the protective box, and the induction magnetic coil and the electromagnetic field restraint device are arranged inside the protective box.

[0005] Furthermore, the induction magnetic coil and the electromagnetic field confinement device include an induction magnetic coil, an electromagnetic field confinement device, a feed guide cylinder, and a mounting bracket. The feed guide cylinder is installed inside the protective box via the mounting bracket, the induction magnetic coil is installed inside the feed guide cylinder, and the electromagnetic field confinement device is installed inside the protective box.

[0006] Furthermore, the electromagnetic field confinement device includes an electromagnet and an intelligent control unit. The electromagnet is installed on the inner wall of the protective box or the inner wall of the feed guide cylinder, symmetrically distributed on both sides of the straightening path. The intelligent control unit includes a microcontroller, a position sensor, and a power supply. The microcontroller is connected to the electromagnet, the position sensor, and the power supply respectively. The position sensor is symmetrically distributed on the inner wall of the protective box on both sides along the straightening path. The power supply is connected to the induction magnetic coil.

[0007] Furthermore, the feed guide cylinder is a conical frustum shape with an opening at both ends and a wider front than a narrower rear.

[0008] Furthermore, the material of the feed guide cylinder is high molecular weight polyethylene.

[0009] Furthermore, the electromagnet is made of silicon steel sheets.

[0010] Furthermore, the protective enclosure is composed of a steel pipe frame and composite panels.

[0011] Furthermore, the steel pipe frame is made of Q235B carbon structural steel, and the composite panel is made of polyurethane composite panel.

[0012] Furthermore, the protective enclosure is equipped with an inspection door.

[0013] This utility model provides a steel bar straightening and protection device, which mainly consists of a protective box, an induction magnetic coil, and an electro-generated magnetic field confinement device. It has the following advantages:

[0014] 1) Optimized protective enclosure structure: The structure combines a steel pipe frame with a composite panel enclosure, which effectively reduces noise transmission while ensuring structural strength, providing a relatively quiet and safe working environment for construction workers.

[0015] 2) Induction magnetic coil power generation function: An induction magnetic coil is cleverly set inside the protective box to convert the mechanical energy during the straightening process of the steel bars into electrical energy, thereby realizing energy recovery, improving energy utilization efficiency, and reducing construction costs.

[0016] 3) Electromagnetic field constraint mechanism: The electromagnetic field constraint device is used to constrain the steel bars during the straightening process, which effectively reduces the phenomenon of steel bar swinging, significantly reduces safety hazards, and protects the personal safety of construction personnel.

[0017] 4) Gradual reduction structure: guides the steel bars to enter smoothly. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the structure of the induction magnetic coil and the electro-generated magnetic field confinement device of this utility model.

[0020] The annotations in the attached figures are explained as follows:

[0021] 1. Feed guide cylinder; 2. Steel pipe frame; 3. Protective box; 4. Rebar disc position; 5. Raw material feed port; 6. Intelligent control unit; 7. Inspection door; 8. Induction magnetic coil and electromagnetic field restraint device; 9. Straightening machine; 10. Mounting bracket; 11. Electromagnet; 12. Induction magnetic coil. Detailed Implementation

[0022] The overall scheme of this utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments:

[0023] See Figure 1, 2 The structure of this utility model includes a protective box 3, a raw material inlet 5, an induction magnetic coil and an electromagnetic field restraint device 8. The raw material inlet 5 is provided on one side of the protective box 3. The induction magnetic coil and electromagnetic field restraint device 8 are arranged inside the protective box 3. The induction magnetic coil and electromagnetic field restraint device 8 includes an induction magnetic coil 12, an electromagnetic field restraint device, a feeding guide cylinder 1 and a mounting bracket 10. The feeding guide cylinder 1 is arranged inside the protective box 3 through the mounting bracket 10. The induction magnetic coil 12 is arranged inside the feeding guide cylinder 1 and the electromagnetic field restraint device is arranged inside the protective box 3. The electromagnetic field confinement device includes an electromagnet 11 and an intelligent control unit 6. The electromagnet 11 is installed on the inner wall of the protective housing 3 or the inner wall of the feed guide cylinder 1, symmetrically distributed on both sides of the straightening path (the central axis of the feed guide cylinder 1). The intelligent control unit 6 includes a microcontroller, position sensors, and a power supply. The microcontroller is connected to the electromagnet 11, the position sensors, and the power supply respectively. The position sensors are symmetrically distributed on both sides of the inner wall of the protective housing 3 along the straightening path (the central axis of the feed guide cylinder 1). The power supply is connected to the induction magnetic coil 12. The feed guide cylinder 1 is a conical frustum shape with an open end, wider at the front and narrower at the back. The protective housing 3 is also equipped with an inspection door 7.

[0024] In the specific implementation process, the protective box 3 adopts a steel pipe frame 2 and a composite plate enclosed structure, with an internally arranged induction magnetic coil and electromagnetic field constraint device 8. The induction magnetic coil 12 efficiently converts the mechanical energy during the straightening process of the steel bar into electrical energy, providing part of the energy for the device itself, achieving energy self-sufficiency and reducing dependence on external power sources. The electromagnetic field constraint device effectively constrains the steel bar during the straightening process by precisely generating a magnetic field, significantly reducing steel bar swinging and lowering safety hazards. The feed guide cylinder 1 is made of friction-resistant material to ensure that the steel bar can smoothly enter the protective box 3, avoiding construction delays or equipment damage caused by poor feeding. Among them:

[0025] The protective housing (3-dimensional design) is modularly designed according to actual construction needs, ensuring precise matching of component dimensions during rapid assembly and disassembly. This guarantees the stability and safety of the overall structure and adapts to space constraints and different straightening machine specifications at various construction sites. The steel pipe frame (2-dimensional design) is made of Q235B carbon structural steel. Dimensions: Height 1.2m, Width 0.8m, Length adapted to straightening machine (9-dimensional design). Connection method: Welding and bolting. The composite panel is made of polyurethane composite board, cut to the frame dimensions, thickness: 20mm.

[0026] The induction magnetic coil 12 features optimized dimensions: its compact structure ensures efficient energy conversion within a limited space without compromising other functions of the protective device, thus improving space utilization and guaranteeing overall device performance. The induction magnetic coil 12 is made of high-strength enameled wire with a diameter of 0.5mm and 200 turns. The permanent magnet is made of neodymium iron boron with a diameter of 10mm and a thickness of 5mm. It is installed by embedding it into the inner wall of the outer protective enclosure 10 or onto the mounting bracket 10.

[0027] In the electromagnetic field confinement device, the electromagnet 11 is made of silicon steel sheet, with dimensions of 20mm in diameter and 50mm in length. Its coil is wound with high-strength enameled wire and fixed to the inner wall of the protective housing 3 or the mounting bracket 10 by bolts. It is symmetrically distributed on both sides of the straightening path (the central axis of the feed guide cylinder 1) to generate a confinement magnetic field. The intelligent control unit 6 includes a microcontroller, a position sensor, and a power supply. The microcontroller, as the core processing module, is fixed to the control cabinet of the protective housing by bolts and is directly connected to the excitation coil of the electromagnet 11 through five hard-wired control lines to achieve graded control of the magnetic field strength. Its input terminal is connected to the position sensor arranged in the straightening operation area through a shielded twisted-pair cable. The rechargeable battery, as an independent power module, is directly connected to the power interface of the microcontroller through a reverse connection protection terminal and has a built-in overvoltage protection circuit to ensure power supply stability. The position sensor employs a non-contact magnetoresistive element, symmetrically distributed on both sides of the magnetic field constraint area along the straightening path (the central axis of the feed guide cylinder 1). It is fixed inside the protective housing 3 using epoxy resin encapsulation and communicates with the microcontroller via shielded twisted-pair cable. The sensing surface of the position sensor maintains a 5-8mm gap from the movement trajectory of the reinforcing bar. The feed guide cylinder 1 is made of high-molecular-weight polyethylene and is located inside the raw material inlet 5. It adopts a tapered structure, specifically a frustum-shaped cone with an open end and a wider front than a narrower rear. Its dimensions are: inner diameter slightly larger than the diameter of the reinforcing bar, outer diameter adapted to the raw material inlet 5, and thickness of 10mm. The feed guide cylinder 1 is fixed to the protective housing 3 by bolts and mounting brackets 11. These three components work together through physical connection: the feed guide cylinder 1 guides the reinforcing bar into the magnetic field constraint area, the electromagnet 11 generates a directional magnetic field, and the microcontroller dynamically adjusts the magnetic field strength based on feedback from the position sensor, achieving precise constraint on the reinforcing bar's movement. This structural design ensures anti-interference capability for signal transmission and improves the system's reliability in complex electromagnetic environments through physical isolation measures.

[0028] In operation, the reinforcing bar disc 4 is placed at the raw material inlet 5. The reinforcing bar is passed through the raw material inlet 5 and, through the electromagnetic field constraint device and the feeding guide cylinder 1, is connected to the straightening machine 9 on the other side of the protective housing 3. The straightening machine 9 and power supply are turned on. The induction magnetic coil 12 converts the mechanical energy of the reinforcing bar during the straightening process into electrical energy, which is then charged into the rechargeable battery. The feeding guide cylinder 1 guides the reinforcing bar into the magnetic field constraint area. The electromagnet 11 generates a directional magnetic field. The microcontroller dynamically adjusts the magnetic field strength based on the feedback from the position sensor, achieving precise constraint on the swinging of the reinforcing bar and reducing the swinging phenomenon. After straightening is completed, the straightening machine 9 and power supply are turned off.

[0029] The content of this utility model and the technical content not specifically described in the above embodiments are the same as the prior art.

[0030] The above are merely specific embodiments disclosed in this utility model, but the scope of protection disclosed in this utility model is not limited thereto. The scope of protection disclosed in this utility model shall be determined by the scope of protection of the claims.

Claims

1. A safety guard for use in the straightening of reinforcing steel, characterised in that: The safety protection device for steel straightening operation comprises a protection box, a raw material feeding port, an induced magnetic coil and an electrically generated magnetic field restraining device.

2. The safety guard for steel straightening operation according to claim 1, characterized in that: The induced magnetic coil and the electrically generated magnetic field restraining device comprise an induced magnetic coil, an electrically generated magnetic field restraining device, a feeding guide cylinder and a mounting bracket.

3. The safety shield for the steel bar straightening operation according to claim 2, characterized in that: The electrically generated magnetic field restraining device comprises electromagnets and an intelligent control unit.

4. The safety shield for steel straightening operations according to claim 3, characterized in that: The electromagnets are arranged on the inner walls of the protection box and the feeding guide cylinder and symmetrically distributed on both sides of the straightening path.

5. The safety shield for steel straightening operations according to claim 4, characterized in that: The feeding guide cylinder is a front-wide and rear-narrow conical circular truncated cone with both ends open.

6. The safety shield for steel straightening operations according to claim 5, characterized in that: The feeding guide cylinder is made of high molecular polyethylene material.

7. The safety shield for the straightening of reinforcing bars according to any one of claims 1 to 6, characterized in that: The electromagnets are made of silicon steel sheet.

8. The safety shield for steel straightening operations according to claim 7, characterized in that: The protection box is composed of a steel pipe frame and a composite board.

9. The safety shield for steel straightening operations according to claim 7, characterized in that: The steel pipe frame is made of Q235B carbon structural steel and the composite board is made of polyurethane composite board. The protection box is provided with an access door.

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