A bridge steel material rust removal and polishing device

Abstract

This invention relates to the field of steel grinding technology, and more particularly to a rust removal and grinding device for bridge steel, comprising an outer frame and an I-beam, and further comprising: a rotating clamping mechanism, wherein two sets of the rotating clamping mechanism are symmetrically arranged; an adjusting mechanism, wherein a plasma generator is fixedly mounted on the working end of the adjusting mechanism, and the output end of the plasma generator is connected to a thin conduit, wherein a spirally arranged energized coil is sleeved on the outside of the thin conduit, and the density of the energized coil gradually increases from right to left; a support rod, wherein the support rod is fixedly mounted on the plasma generator, and a laser emitter is fixedly mounted on the front end of the support rod; and a vision sensor, wherein the working end of the vision sensor faces the side of the I-beam. This application can achieve all-round grinding of the surface of the I-beam, with better grinding effect, and can further intensify grinding of areas with thicker rust, which is beneficial for removing stubborn rust from the surface of the I-beam.

Description

Technical Field

[0001] This invention relates to the field of steel grinding technology, and in particular to a rust removal and grinding device for bridge steel. Background Technology

[0002] Steel is an important building material in bridge construction, and its quality directly affects the quality of the bridge. A large number of I-beams are needed in the construction of bridges. During the production process, because I-beams are stored in warehouses for a long time, their surfaces will rust or produce a lot of oxide scale. When using them to make precast components, it is necessary to clean the rust off their surfaces. If the rust is not removed, it will seriously affect their use.

[0003] For rust removal of I-beams, current rust removal equipment has poor rust removal effect, and rust on all surfaces of the I-beams cannot be completely removed and takes a long time, which greatly reduces the efficiency of rust removal. Manual rust removal is even less efficient and requires a lot of manpower and resources, while chemical rust removal will bring a lot of pollution. Sandblasting and shot blasting consume a lot of energy, making the current rust removal of I-beams quite difficult. Summary of the Invention

[0004] The purpose of this invention is to address the aforementioned shortcomings in the prior art by providing a bridge steel rust removal and grinding device.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A bridge steel rust removal and grinding device includes an outer frame and an I-beam, and also includes:

[0007] The rotating clamping mechanism consists of two symmetrically arranged sets, which are respectively installed on the inner walls of the left and right sides of the outer frame, and are used to clamp the I-beam and make it rotate.

[0008] An adjustment mechanism is installed inside the outer frame. A plasma generator is fixedly installed at its working end. The plasma generator is supplied with a mixture of oxygen and argon by a gas supply unit installed on the outer frame. The output end of the plasma generator is connected to a thin conduit. A spirally arranged energized coil is sleeved on the outside of the thin conduit. The density of the energized coil gradually increases from right to left. A jet nozzle is provided at the front end of the thin conduit. The front end of the jet nozzle faces the I-beam side, and a reflective sleeve is connected between it and the thin conduit. A reflective layer with a 90° inclined angle is installed on the inner wall of the reflective sleeve.

[0009] A support rod is fixedly installed on a plasma generator. A laser emitter is fixedly installed at the front end of the support rod. The output end of the laser emitter faces vertically downward and is connected to the inside of the reflective sleeve.

[0010] A vision sensor is fixedly installed at the upper end of the injection nozzle, with its working end facing the I-beam side.

[0011] A pressure-reducing mechanism is provided on one side of the upper end of the outer frame and is used to reduce pressure inside the outer frame.

[0012] Preferably, the rotating clamping mechanism includes an electric push rod fixedly installed on the inner wall of the outer frame, an electric rotating shaft fixedly installed at the output end of the electric push rod, and a clamping fixing frame keyed to the output end of the electric rotating shaft.

[0013] Preferably, the clamping and fixing frame is arranged in an approximately "+" shape.

[0014] Preferably, rubber pads are glued to all four corners of the clamping and fixing frame near the I-beam.

[0015] Preferably, the adjustment mechanism includes an electric turntable fixedly installed on the top wall of the outer frame, the output end of the electric turntable facing downward and rotatably mounted with a mechanical arm, and the working end of the mechanical arm being fixedly connected to the plasma generator.

[0016] Preferably, the gas supply unit includes a gas storage tank fixedly installed in the top wall of the outer frame, the gas storage tank storing a mixture of oxygen and argon, the output end of the gas storage tank being connected to a gas delivery hose, and the lower end of the gas delivery hose being connected to the input end of the plasma generator.

[0017] Preferably, the inner diameter of the reflective sleeve gradually increases from the thin guide tube towards the spray nozzle side.

[0018] Preferably, the pressure reduction mechanism includes an air evacuator fixedly installed on the upper end of the outer frame, the input end of the air evacuator is connected to an exhaust pipe, and the end of the exhaust pipe away from the air evacuator is connected to the interior of the outer frame.

[0019] Preferably, a dust collection frame located directly below the I-beam is fixedly installed on the bottom wall of the inner frame, and a dust collection device is fixedly installed on the upper end of the dust collection frame.

[0020] Preferably, a removable drawer is slidably installed inside the dust collection frame.

[0021] Compared with the prior art, the advantages of the present invention are as follows:

[0022] 1. In this application, by setting up a plasma generator, a thin conduit and an energized coil, argon and oxygen can be ionized to generate plasma. Then, the plasma is accelerated by the Lorentz force present in the magnetic field generated by the energized coil, so that the plasma obtains a sufficiently high speed and energy, effectively enhancing the rust removal effect of the device.

[0023] 2. In this application, the high-speed particles of argon plasma can impact the rust layer with strong kinetic energy, peeling the rust particles off the surface of the I-beam. Meanwhile, the oxygen plasma can react with the oxides on the surface of the I-beam, reducing them to metal. Physical and chemical rust removal are carried out simultaneously, greatly improving the rust removal effect. At the same time, the plasma has a high temperature, which can heat up the rust layer and change its physical properties, such as hardness and adhesion, making it easier to remove.

[0024] 3. In this application, by setting up a laser transmitter and a reflective sleeve, on the one hand, the high-intensity short-pulse laser can concentrate high energy on the rust layer on the surface of the I-beam in a very short time, removing the thicker rust layer. On the other hand, the high-intensity laser pulse has a large momentum. When the laser irradiates the plasma, the radiation pressure of the light can drive the charged particles in the plasma, thereby accelerating them. The accelerated plasma can improve the rust removal effect. The two work together to easily remove the thicker rust layer.

[0025] 4. The vacuum pump and exhaust pipe in this application can reduce the pressure inside the outer frame, thereby enabling plasma grinding and rust removal of the I-beam in a low-pressure environment. On the one hand, this helps to generate and maintain plasma, reduces collisions between gas molecules, and allows the plasma to act more effectively on the workpiece surface. On the other hand, it can more concentratedly transfer energy to the surface of the I-beam, enhancing the grinding and rust removal effect. At the same time, it can also reduce the interference of impurities in the air on the plasma and rust removal process.

[0026] In summary, this application enables comprehensive grinding of the surface of I-beams with better results, and can further enhance the grinding of areas with thicker rust, which is beneficial for removing stubborn rust from the surface of I-beams. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the overall isometric structure of a bridge steel rust removal and grinding device proposed in this invention.

[0028] Figure 2 This is a schematic diagram of the internal structure of the outer frame of a bridge steel rust removal and grinding device proposed in this invention.

[0029] Figure 3 This is a schematic diagram of the electric push rod and electric rotating shaft structure of a bridge steel rust removal and grinding device proposed in this invention.

[0030] Figure 4 This is a schematic diagram of the I-beam and dust collection device of a bridge steel rust removal and grinding device proposed in this invention.

[0031] Figure 5This is a schematic diagram of the electric turntable and robotic arm structure of a bridge steel rust removal and grinding device proposed in this invention.

[0032] Figure 6 This is a schematic diagram of the support rod and laser emitter structure of a bridge steel rust removal and grinding device proposed in this invention.

[0033] Figure 7 This is a schematic diagram of the half-section structure of the fine conduit of a bridge steel rust removal and grinding device proposed in this invention.

[0034] In the diagram: 1 Outer frame, 2 Vacuum pump, 3 Exhaust duct, 4 Air tank, 5 Air guide hose, 6 Dust collection frame, 7 Dust collection device, 8 Electric push rod, 9 I-beam, 10 Electric rotating shaft, 11 Rubber pad, 12 Electric turntable, 13 Robotic arm, 14 Plasma generator, 15 Fine guide tube, 16 Support rod, 17 Laser emitter, 18 Powered coil, 19 Reflective sleeve, 20 Spray nozzle, 21 Visual sensor. Detailed Implementation

[0035] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0036] Reference Figures 1 to 7 A bridge steel rust removal and grinding device includes an outer frame 1, a dust collection frame 6 fixedly installed on the inner bottom wall of the outer frame 1, and a detachable drawer slidably installed inside the dust collection frame 6. Dust and other impurities entering the dust collection frame 6 will be further collected in the drawer. Subsequently, the dust can be cleaned by simply pulling the drawer out of the dust collection frame 6. A dust suction device 7 is fixedly installed at the upper end of the dust collection frame 6. The dust suction device 7 is existing technology, and its specific structural design will not be described in detail here.

[0037] Both sides of the vacuum cleaner 7 are equipped with electric push rods 8 fixedly installed on the inner wall of the outer frame 1. The two electric push rods 8 are symmetrically arranged and located on the same horizontal plane. The output ends of the two electric push rods 8 are fixedly installed with electric rotating shafts 10. The output ends of the electric rotating shafts 10 are keyed to clamping and fixing frames, which are arranged in an approximately "+" shape (as shown in the instruction manual). Figure 3 As shown, rubber pads 11 are glued to the four corners of the clamping frame near the I-beam 9. By setting the rubber pads 11, the friction between the clamping frame and the surface of the I-beam 9 can be increased, thereby achieving a more stable clamping of the I-beam 9. At the same time, by setting the electric rotating shaft 10, the electric rotating shaft 10 can drive the I-beam 9 to rotate during the rotation process, which facilitates the all-round grinding of the I-beam 9.

[0038] An electric turntable 12 is fixedly installed on the inner top wall of the outer frame 1. The output end of the electric turntable 12 faces downward and is rotatably mounted on a robotic arm 13. The electric turntable 12 can make the robotic arm 13 rotate 360°, and the robotic arm 13 itself can also rotate. A plasma generator 14 is fixedly installed at the front end of the robotic arm 13. The plasma generator 14 is existing technology, and its specific structural design will not be described in detail here. The input end of the plasma generator 14 is connected to a gas guide hose 5. The upper end of the gas guide hose 5 is connected to a gas storage tank 4 fixedly installed in the inner top wall of the outer frame 1. The gas storage tank 4 stores a mixture of oxygen and argon. When the plasma generator 14 is running, it can ionize the mixed gas that enters it, thereby generating plasma for subsequent grinding and rust removal.

[0039] The output end of the plasma generator 14 is connected to a thin conduit 15. A nozzle 20 is located at the front end of the thin conduit 15, with the front end of the nozzle 20 facing the I-beam 9. The nozzle 20 and the thin conduit 15 are connected by a reflective sleeve 19. The inner diameter of the reflective sleeve 19 gradually increases from the thin conduit 15 towards the nozzle 20. A reflective layer is installed on the inner wall of the reflective sleeve 19, and this reflective layer is inclined at 45° (as per the instruction manual). Figure 7 (As shown). A support rod 16 is installed on the plasma generator 14. A laser emitter 17 is fixedly installed at the front end of the support rod 16. The laser emitter 17 is also existing technology, and its specific structural design will not be described in detail here. The output end of the laser emitter 17 is vertically downward and connected to the inside of the reflective sleeve 19. When the laser emitter 17 is working, the beam it generates will irradiate the surface of the reflective layer. Under the reflection of the reflective layer, the beam is emitted in a state parallel to the jet nozzle 20 and acts on the surface of the I-beam 9.

[0040] A spirally arranged energized coil 18 is sleeved on the outer side of the thin conduit 15. The density of the energized coil 18 gradually increases from right to left, which continuously increases the Lorentz force on the plasma during its forward movement, thereby accelerating it before it is ejected from the wider inner diameter nozzle 20. A vision sensor 21 is fixedly installed at the upper end of the nozzle 20, with the working end of the vision sensor 21 facing the side of the I-beam 9.

[0041] An air extraction machine 2 is fixedly installed on one side of the upper end of the outer frame 1. The input end of the air extraction machine 2 is connected to an exhaust pipe 3. The end of the exhaust pipe 3 away from the air extraction machine 2 is connected to the inside of the outer frame 1. Under the action of the air extraction machine 2, the pressure inside the outer frame 1 can be reduced through the exhaust pipe 3, thereby enabling plasma grinding and rust removal of the I-beam 9 in a low-pressure environment.

[0042] The specific working principle of this invention is as follows: Since steel structure bridges extensively use I-beams (9), and due to the special structure of the I-beams (9), ordinary grinding devices have poor grinding effects and low efficiency. This device changes the grinding method and is highly flexible, allowing for intensive grinding of areas with thicker rust at any time, making it highly functional.

[0043] Open the outer frame 1 and place the I-beam 9 in the middle of the two electric push rods 8. Simultaneously start the two electric push rods 8 and use the rubber pads 11 to fix the four corners of the I-beam 9. The four-point distributed rubber pads 11 fit the shape of the I-beam 9 and achieve a stable fixing effect.

[0044] After securing the device, open the gas storage tank 4, which is filled with a mixture of oxygen and argon. This mixture is then introduced into the plasma generator 14 through the gas delivery hose 5. The argon and oxygen are ionized to generate plasma. The plasma first enters a thin conduit 15 with a narrow inner diameter. An energized coil 18 is wound around the outside of the thin conduit 15, and the magnetic field strength gradually increases along the direction of plasma movement. The number of turns in the energized coil 18 gradually increases from right to left, further increasing the magnetic field strength. This causes the Lorentz force on the plasma to continuously increase as it moves forward, thus accelerating it before it is ejected from the wider nozzle 20.

[0045] Acceleration within the thin conduit 15 allows the plasma to achieve higher speeds and energy. When it enters the larger diameter nozzle 20, it can be ejected with greater momentum and energy, enhancing the rust removal effect. The transition from the thin conduit 15 to the larger nozzle 20 allows the plasma to be distributed more evenly during ejection, covering a larger area or acting more uniformly on the target surface. Maintaining a high pressure through the thin conduit during the acceleration phase and releasing the pressure upon entering the larger nozzle 20 reduces pressure loss throughout the system and improves energy utilization efficiency.

[0046] At the same time, the vacuum pump 2 reduces the pressure inside the outer frame 1 through the exhaust pipe 3; plasma polishing and rust removal in a low-pressure environment has the following advantages:

[0047] 1. Reduce gas collisions: It helps in the generation and maintenance of plasma, reduces collisions between gas molecules, and allows the plasma to act more effectively on the workpiece surface;

[0048] 2. Improved energy transfer: It can transfer energy to the surface of the I-beam more concentratedly, enhancing the effect of polishing and rust removal;

[0049] 3. Reduce interference from impurities: Reduce the interference of impurities in the air on the plasma and rust removal process.

[0050] The high-speed particles of argon plasma impact the rust layer with powerful kinetic energy, peeling the rust particles off the surface of the I-beam 9. The oxygen plasma reacts with the oxides on the surface of the I-beam 9, reducing them to metal; physical and chemical rust removal occur simultaneously, greatly improving the rust removal effect; at the same time, the plasma has a high temperature, which can heat up the rust layer, changing its physical properties, such as hardness and adhesion, making it easier to remove.

[0051] During the grinding process, the electric rotating shaft 10 is activated to rotate the I-beam 9, and the electric turntable 12 and the robotic arm 13 are used to grind the I-beam 9 thoroughly.

[0052] When the vision sensor 21 detects stubborn rust, it transmits an electrical signal to the processor inside the device. The processor processes the signal and then sends it to the controller inside the device. Upon receiving the signal, the controller activates the laser transmitter 17, emitting a high-intensity, short-pulse laser. The emitted laser is reflected by the reflective sleeve 19 and emitted from the nozzle 20 along with the plasma. This has the following advantages: First, the high-intensity, short-pulse laser can concentrate high energy on the rust layer on the surface of the I-beam 9 in a very short time, effectively removing thicker rust layers. Second, the high-intensity laser pulse has significant momentum; when the laser irradiates the plasma, the radiation pressure of the light can accelerate the charged particles in the plasma, thus improving the rust removal effect. The combined effect of these two factors allows for the easy removal of thicker rust layers.

[0053] The dust collection device 7 will also work continuously during the rust removal process to collect the debris generated during grinding into the dust collection frame 6.

[0054] After grinding, the I-beam 9 can be removed.

[0055] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A rust removal and grinding device for bridge steel, comprising an outer frame (1) and an I-beam (9), characterized in that, It also includes: The rotating clamping mechanism is arranged in two symmetrical sets, which are respectively installed on the inner walls of the left and right sides of the outer frame (1) to clamp the I-beam (9) and make it rotate. An adjustment mechanism is installed inside the outer frame (1). A plasma generator (14) is fixedly installed at its working end. The plasma generator (14) is supplied with a mixture of oxygen and argon by a gas supply unit installed on the outer frame (1). The output end of the plasma generator (14) is connected to a thin conduit (15). A spirally arranged energized coil (18) is sleeved on the outside of the thin conduit (15). The density of the energized coil (18) gradually increases from right to left. A jet nozzle (20) is provided at the front end of the thin conduit (15). The front end of the jet nozzle (20) faces the side of the I-beam (9). A reflective sleeve (19) is connected between the jet nozzle (20) and the thin conduit (15). A reflective layer with a 45° inclined arrangement is installed on the inner wall of the reflective sleeve (19). A support rod (16) is fixedly installed on a plasma generator (14). A laser emitter (17) is fixedly installed at the front end of the support rod (16). The output end of the laser emitter (17) is vertically downward and communicates with the inside of the reflective sleeve (19). A vision sensor (21) is fixedly installed on the upper end of the injection nozzle (20), with its working end facing the side of the I-beam (9); The pressure relief mechanism is located on one side of the upper end of the outer frame (1) and is used to reduce the pressure inside the outer frame (1).

2. The bridge steel rust removal and grinding device according to claim 1, characterized in that, The rotating clamping mechanism includes an electric push rod (8) fixedly installed on the inner wall of the outer frame (1). An electric rotating shaft (10) is fixedly installed at the output end of the electric push rod (8). A clamping fixing frame is keyed to the output end of the electric rotating shaft (10).

3. The bridge steel rust removal and grinding device according to claim 2, characterized in that, The clamping and fixing frame is arranged in an approximately "+" shape.

4. The bridge steel rust removal and grinding device according to claim 3, characterized in that, The clamping and fixing frame has rubber pads (11) glued to the four corners of the end near the I-beam (9).

5. The bridge steel rust removal and grinding device according to claim 1, characterized in that, The adjustment mechanism includes an electric turntable (12) fixedly installed on the inner top wall of the outer frame (1). The output end of the electric turntable (12) faces downward and is rotatably mounted with a mechanical arm (13). The working end of the mechanical arm (13) is fixedly connected to the plasma generator (14).

6. The bridge steel rust removal and grinding device according to claim 1, characterized in that, The gas supply unit includes a gas storage tank (4) fixedly installed in the inner top wall of the outer frame (1). The gas storage tank (4) stores a mixture of oxygen and argon. The output end of the gas storage tank (4) is connected to a gas guide hose (5). The lower end of the gas guide hose (5) is connected to the input end of the plasma generator (14).

7. The bridge steel rust removal and grinding device according to claim 1, characterized in that, The inner diameter of the reflective sleeve (19) gradually increases from the thin guide tube (15) toward the spray port (20).

8. The bridge steel rust removal and grinding device according to claim 1, characterized in that, The pressure relief mechanism includes an air evacuator (2) fixedly installed on the upper end of the outer frame (1). The input end of the air evacuator (2) is connected to an exhaust pipe (3). The end of the exhaust pipe (3) away from the air evacuator (2) is connected to the interior of the outer frame (1).

9. The bridge steel rust removal and grinding device according to claim 1, characterized in that, A dust collection frame (6) located directly below the I-beam (9) is fixedly installed on the inner bottom wall of the outer frame (1), and a dust collection device (7) is fixedly installed on the upper end of the dust collection frame (6).

10. The bridge steel rust removal and grinding device according to claim 9, characterized in that, The dust collection frame (6) has a removable drawer that is slidably installed inside.

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