Bridge steel derusting and polishing device

Abstract

The invention relates to the technical field of steel polishing, in particular to a bridge steel derusting and polishing device which comprises an outer frame and I-shaped steel and further comprises two sets of rotary clamping mechanisms symmetrically arranged; the working end of the adjusting mechanism is fixedly provided with a plasma generator, the output end of the plasma generator is communicated with a thin guide pipe, the outer side of the thin guide pipe is sleeved with a spirally-arranged electrified coil, and the density of the electrified coil is gradually increased from right to left; the supporting rod is fixedly installed on the plasma generator, and a laser transmitter is fixedly installed at the front end of the supporting rod; and the working end of the visual sensor faces one side of the I-shaped steel. The surface of the I-shaped steel can be polished in all directions, the polishing effect is better, the part with thick rust can be further polished in a reinforced mode, and stubborn rust on the surface of the I-shaped steel can be removed advantageously.

Description

Technical Field

[0001] The invention relates to the technical field of steel grinding, and in particular to a rust removal and grinding device for bridge steel. Background Art

[0002] Steel is an important building material in bridge construction. The quality of steel directly affects the quality of bridges. A large number of I-beams are needed in the construction of bridges. During the production process, since I-beams are stored in warehouses for a long time, their surfaces will rust or produce a large amount of oxide scale. When using them to prepare prefabricated components, the rust on their surfaces needs to be cleaned. If the rust on their surfaces is not removed, it will seriously affect their use.

[0003] As for the rust removal of I-beams, the current rust removal devices have poor rust removal effects, and the rust on the surfaces of the I-beams cannot be completely removed and takes a long time, which greatly reduces the rust removal efficiency. Manual rust removal is even less efficient and requires a lot of manpower and material resources. Chemical rust removal will bring a lot of pollution. Sand blasting and shot blasting consume a lot of energy, which makes the current rust removal of I-beams more difficult. Summary of the invention

[0004] The purpose of the present invention is to solve the above-mentioned shortcomings existing in the prior art and to propose a bridge steel rust removal and grinding device.

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

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

[0007] A rotating clamping mechanism, wherein the rotating clamping mechanism is symmetrically arranged in two groups, respectively installed on the inner walls of the left and right sides of the outer frame, and is used to clamp the I-beam and rotate it;

[0008] An adjusting mechanism, the adjusting mechanism is installed inside the outer frame, a plasma generator is fixedly installed on the working end of the adjusting mechanism, the plasma generator is supplied with a mixed gas of oxygen and argon by a gas supply part installed on the outer frame, the output end of the plasma generator is connected with a thin tube, the outer side of the thin tube is sheathed with a spirally arranged energized coil, the density of the energized coil gradually increases from right to left, the front end of the thin tube is provided with an injection port, the front end of the injection port faces one side of the I-beam, and a reflection sleeve is connected between the injection port and the thin tube, and the inner wall of the reflection sleeve is provided with a reflection layer arranged at an angle of °;

[0009] A support rod, the support rod is fixedly mounted on the plasma generator, a laser transmitter is fixedly mounted on the front end of the support rod, and an output end of the laser transmitter is vertically downward and communicated with the interior of the reflective sleeve;

[0010] A visual sensor, wherein the visual sensor is fixedly mounted on the upper end of the injection port, and the working end of the visual sensor faces one side of the I-beam;

[0011] The decompression mechanism is arranged at one side of the upper end of the outer frame and is used to reduce the pressure inside the outer frame.

[0012] Preferably, the rotating clamping mechanism comprises an electric push rod fixedly mounted on the inner wall of the outer frame, an electric rotating shaft is fixedly mounted on the output end of the electric push rod, and a clamping fixing frame is key-connected to the output end of the electric rotating shaft.

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

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

[0015] Preferably, the adjustment mechanism comprises an electric turntable fixedly mounted on the inner top wall of the outer frame, the output end of the electric turntable faces downward and a mechanical arm is rotatably mounted thereon, and the working end of the mechanical arm is fixedly connected to the plasma generator.

[0016] Preferably, the gas supply unit includes a gas tank fixedly installed in the inner top wall of the outer frame, the gas tank stores a mixed gas of oxygen and argon, the output end of the gas tank is connected to a gas hose, and the lower end of the gas hose is connected to the input end of the plasma generator.

[0017] Preferably, the inner diameter of the reflective sleeve gradually increases from the thin conduit toward the injection port.

[0018] Preferably, the decompression mechanism comprises an air evacuator fixedly mounted on the upper end of the outer frame, the input end of the air evacuator is connected to an exhaust pipe, and one end of the exhaust pipe away from the air evacuator is connected to the inside of the outer frame.

[0019] Preferably, a dust collecting frame located just below the I-beam is fixedly mounted on the inner bottom wall of the outer frame, and a dust collecting device is fixedly mounted on the upper end of the dust collecting frame.

[0020] Preferably, a detachable drawer is slidably mounted inside the dust collecting frame.

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

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

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

[0024] 3. In the present application, by setting up a laser transmitter and a reflective sleeve, on the one hand, a 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 to remove 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 push the charged particles in the plasma, thereby achieving acceleration. The accelerated plasma can improve the rust removal effect. The two work together to easily remove the thicker rust layer.

[0025] 4. In the present application, the vacuum machine and the exhaust duct are provided to reduce the pressure inside the outer frame, so that the I-beam can be plasma polished and rust removed in a low-pressure environment. On the one hand, it helps to generate and maintain plasma, reduce collisions between gas molecules, and enable plasma to act more effectively on the workpiece surface. On the other hand, it can transfer energy to the I-beam surface in a more concentrated manner, enhance the polishing and rust removal effects, and at the same time reduce the interference of impurities in the air on the plasma and rust removal process.

[0026] In summary, the present application can achieve all-round grinding of the surface of the I-beam with better grinding effect, and can further strengthen the grinding for the parts with thicker rust, which is conducive to removing the stubborn rust on the surface of the I-beam. BRIEF DESCRIPTION OF THE DRAWINGS

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

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

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

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

[0033] Figure 7 This is a schematic diagram of the half-section structure of a fine guide tube of a bridge steel rust removal and grinding device proposed by the present invention.

[0034] In the figure: 1 outer frame, 2 vacuum machine, 3 exhaust pipe, 4 gas storage tank, 5 air guide hose, 6 dust collection frame, 7 dust suction device, 8 electric push rod, 9 I-beam, 10 electric shaft, 11 rubber pad, 12 electric turntable, 13 mechanical arm, 14 plasma generator, 15 fine tube, 16 support rod, 17 laser transmitter, 18 energized coil, 19 reflective sleeve, 20 injection nozzle, 21 visual sensor. DETAILED DESCRIPTION

[0035] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0036] Reference Figures 1 to 7 A bridge steel rust removal and polishing device includes an outer frame 1, a dust collecting frame 6 is fixedly installed on the inner bottom wall of the outer frame 1, and a detachable drawer is slidably installed inside the dust collecting frame 6. Dust and other impurities entering the dust collecting frame 6 will further enter the drawer for concentration. Subsequently, the dust can be cleaned by simply pulling the drawer out of the dust collecting frame 6. A dust suction device 7 is fixedly installed on the upper end of the dust collecting frame 6. The dust suction device 7 is a prior art, and its specific structural design will not be repeated here.

[0037] The left and right sides of the dust collecting device 7 are both provided with electric push rods 8 fixedly mounted 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 both fixedly mounted with electric shafts 10. The output ends of the electric shafts 10 are keyed to clamping and fixing frames. The clamping and fixing frames are arranged in an approximately "cross" shape (as shown in the attached manual). Figure 3 As shown), and rubber pads 11 are glued to the four corners of one end of the clamping frame close to the I-beam 9. The rubber pads 11 can increase the friction between the clamping frame and the surface of the I-beam 9, so that the I-beam 9 can be clamped more stably. At the same time, the electric rotating shaft 10 is provided, and the electric rotating shaft 10 can drive the I-beam 9 to rotate during the rotation process, so as to facilitate 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, and the output end of the electric turntable 12 faces downward and a mechanical arm 13 is rotatably installed. The mechanical arm 13 can be rotated 360° through the electric turntable 12, and the mechanical arm 13 itself can also be rotated. A plasma generator 14 is fixedly installed at the front end of the mechanical arm 13. The plasma generator 14 is a prior art, and its specific structural design is not repeated here. The input end of the plasma generator 14 is connected to a gas guide hose 5, and 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 mixed gas of oxygen and argon. When the plasma generator 14 is in operation, the mixed gas entering the interior thereof can be ionized, so that the mixed gas generates plasma for subsequent polishing and rust removal.

[0039] The output end of the plasma generator 14 is connected to a thin conduit 15, and a jet port 20 is arranged at the front end of the thin conduit 15. The front end of the jet port 20 faces the side of the I-beam 9. The jet port 20 and the thin conduit 15 are connected through a reflection sleeve 19. The inner diameter of the reflection sleeve 19 gradually increases from the thin conduit 15 to the side of the jet port 20. A reflection layer is installed on the inner wall of the reflection sleeve 19, and the reflection layer is inclined at 45° (as shown in the attached manual). Figure 7 The plasma generator 14 is provided with a support rod 16, and a laser transmitter 17 is fixedly installed at the front end of the support rod 16. The laser transmitter 17 is also a prior art, and its specific structural design is not repeated here. The output end of the laser transmitter 17 is vertically downward and connected to the inside of the reflective sleeve 19. When the laser transmitter 17 is working, the light beam generated by it will irradiate the surface of the reflective layer. Under the reflection effect of the reflective layer, the light beam is emitted in a state parallel to the injection port 20 and acts on the surface of the I-beam 9.

[0040] The outer side of the thin tube 15 is sheathed with a spirally arranged energized coil 18, and the density of the energized coil 18 gradually increases from right to left, so that the Lorentz force on the plasma during the forward movement is continuously increased, thereby achieving acceleration, and then ejected from the injection port 20 with a wider inner diameter. A visual sensor 21 is fixedly installed at the upper end of the injection port 20, and the working end of the visual sensor 21 faces the side of the I-beam 9.

[0041] An air evacuator 2 is fixedly installed on one side of the upper end of the outer frame 1, and 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. Under the action of the air evacuator 2, the interior of the outer frame 1 can be depressurized through the exhaust pipe 3, so that the I-beam 9 can be plasma polished and rust-removed in a low-pressure environment.

[0042] The specific working principle of the present invention is as follows: Since a large number of I-beams 9 are used in steel structure bridges, due to the special structure of the I-beams 9, the ordinary grinding device has poor grinding effect and low efficiency. The present device changes the grinding method and has high flexibility and can perform enhanced grinding at any time for areas with thick rust, and has strong functionality.

[0043] Open the outer frame 1 and place the I-beam 9 in the middle of the two electric push rods 8. Start the two electric push rods 8 at the same time, 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 to achieve a stable fixing effect.

[0044] After fixing, open the gas tank 4, which is filled with a mixed gas of oxygen and argon. The mixed gas is introduced into the plasma generator 14 through the gas hose 5, and the argon and oxygen are ionized to generate plasma. The generated plasma first enters the thin conduit 15 with a thinner inner diameter. The outer side of the thin conduit 15 is wrapped with a power coil 18, and the magnetic field strength gradually increases along the direction of plasma movement. The number of turns of the power coil 18 gradually increases from right to left, and the magnetic field strength gradually increases. In this way, the Lorentz force on the plasma during its forward movement continues to increase, thereby achieving acceleration, and then ejected from the injection port 20 with a wider inner diameter.

[0045] Acceleration in the thin conduit 15 can make the plasma obtain higher speed and energy. When it enters the injection port 20 with a larger diameter, it can be ejected with greater momentum and energy, enhancing the rust removal effect; the transition from the thin conduit 15 to the larger injection port 20 can make the plasma more evenly distributed when ejected, covering a larger area or acting more evenly on the target surface; in the acceleration stage, a higher pressure is maintained through the thin conduit, and the pressure is released when entering the larger injection port 20, reducing the pressure loss in the entire system and improving the energy utilization efficiency.

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

[0047] 1. Reduce gas collisions: It helps to generate and maintain plasma, reduces collisions between gas molecules, and enables plasma to act more effectively on the workpiece surface;

[0048] 2. Improve energy transfer: It can transfer energy to the surface of I-beam 9 more concentratedly, enhancing the effect of grinding 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 the argon plasma hit the rust layer with strong kinetic energy, peeling off the particles of the rust layer from the surface of the I-beam 9. The oxygen plasma reacts with the oxide on the surface of the I-beam 9 to reduce it 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.

[0051] During the grinding process, the electric rotating shaft 10 is started to rotate the I-beam 9 , and the electric rotating table 12 and the mechanical arm 13 are used to grind the I-beam 9 comprehensively.

[0052] When the visual sensor 21 identifies the rust that is difficult to remove, it will transmit the generated electrical signal to the processor inside the device. After processing the electrical signal, the processor will send it to the controller inside the device. After receiving the electrical signal, the controller will start the laser transmitter 17 to emit a high-intensity, short-pulse laser. The emitted laser will be reflected by the reflective sleeve 19 and emitted from the injection port 20 together with the plasma. There are 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, and remove the thicker rust layer. Second, the high-intensity laser pulse has a large momentum. When the laser irradiates the plasma, the radiation pressure of the light can push the charged particles in the plasma, thereby achieving acceleration. The accelerated plasma can improve the rust removal effect. The two work together to easily remove thicker rust layers.

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

[0054] After grinding is completed, the I-beam 9 can be taken out.

[0055] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A bridge steel rust removal and grinding device, comprising an outer frame (1) and an I-beam (9), characterized in that: Also included are: A rotating clamping mechanism, wherein the rotating clamping mechanism comprises two groups symmetrically arranged and respectively mounted on the inner walls of the left and right sides of the outer frame (1), and used for clamping the I-beam (9) and causing it to rotate; an adjusting mechanism, the adjusting mechanism being installed inside the outer frame (1), and having a plasma generator (14) fixedly installed at its working end, the plasma generator (14) being supplied with a mixed gas of oxygen and argon by a gas supply unit installed on the outer frame (1), the output end of the plasma generator (14) being connected with a thin conduit (15), the outer side of the thin conduit (15) being sleeved with a spirally arranged energized coil (18), the density of the energized coil (18) gradually increasing from right to left, the front end of the thin conduit (15) being provided with an injection port (20), the front end of the injection port (20) being directed toward one side of the I-beam (9), and a reflection sleeve (19) being connected between the injection port (20) and the thin conduit (15), the inner wall of the reflection sleeve (19) being provided with a reflection layer arranged at an angle of 45°; A support rod (16), the support rod (16) being fixedly mounted on the plasma generator (14), a laser transmitter (17) being fixedly mounted on the front end of the support rod (16), an output end of the laser transmitter (17) being vertically downward and in communication with the interior of the reflective sleeve (19); A visual sensor (21), wherein the visual sensor (21) is fixedly mounted on the upper end of the injection port (20), and its working end faces one side of the I-beam (9); A decompression mechanism is arranged on one side of the upper end of the outer frame (1) and is used to decompress the interior of the outer frame (1).

2. The bridge steel rust removal and polishing device according to claim 1 is characterized in that: The rotating clamping mechanism comprises an electric push rod (8) fixedly mounted on the inner wall of the outer frame (1), an electric rotating shaft (10) fixedly mounted on the output end of the electric push rod (8), and a clamping fixing frame is key-connected to the output end of the electric rotating shaft (10).

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

4. The bridge steel rust removal and polishing device according to claim 3 is characterized in that: The four corners of one end of the clamping and fixing frame close to the I-beam (9) are all glued with rubber pads (11).

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

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

7. The bridge steel rust removal and grinding device according to claim 1, characterized in that: The inner diameter of the reflection sleeve (19) gradually increases from the thin conduit (15) to the injection port (20).

8. The bridge steel rust removal and polishing device according to claim 1, characterized in that: The decompression mechanism comprises an air evacuator (2) fixedly mounted on the upper end of the outer frame (1); the input end of the air evacuator (2) is connected to an exhaust pipe (3); and 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 polishing device according to claim 1, characterized in that: A dust collecting frame (6) is fixedly mounted on the inner bottom wall of the outer frame (1) and is located directly below the I-beam (9). A dust collecting device (7) is fixedly mounted on the upper end of the dust collecting frame (6).

10. The bridge steel rust removal and grinding device according to claim 9, characterized in that: A detachable drawer is slidably mounted inside the dust collecting frame (6).

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