A rust removal device and method for pre-buried exposed reinforcement in construction engineering

Abstract

The application discloses a kind of pre-embedded external leakage reinforcing steel bar derusting device and method for construction engineering, belong to the technical field of construction engineering, including fixed plate, the fixed plate upper end one side is fixedly connected with support, the support one side is clamped with main sleeve, the main sleeve side wall is fixed with handle, the main sleeve middle is inserted with flexible shaft, the support middle position is fixedly connected with motor, the motor spindle end is connected with flexible shaft by coupling, the main sleeve side wall is fixedly connected with first switch, the first switch is electrically connected with motor by wire, by installing the main sleeve of flexible shaft insertion on the support upper end, flexible shaft is connected with the output shaft of motor, then motor is fixed on fixed plate, the other end of flexible shaft is installed polishing derusting component for polishing and derusting treatment to reinforcing steel, can reduce the force required to be exerted by handheld polishing component, reduce work consumption, facilitate derusting treatment to reinforcing steel.

Description

Technical Field

[0001] This invention discloses a rust removal device and method for pre-embedded exposed steel bars in building engineering, belonging to the field of building engineering technology. Background Technology

[0002] Construction engineering refers to the physical engineering entity formed by the construction of various buildings and their ancillary facilities, as well as the installation of supporting lines, pipelines, and equipment. The quality of construction engineering can be divided into two meanings: narrow and broad. The narrow definition of construction engineering quality mainly refers to the functional requirements of the building project. This concept emphasizes the physical quality of the building project, such as whether the foundation is solid, whether the main structure is safe, and whether the ventilation and lighting are reasonable. During the construction process, in order to facilitate subsequent construction, some steel bars need to be embedded and exposed. These embedded and exposed steel bars will inevitably rust, affecting their use. Currently, most of the rust removal methods used involve manual processing of rusted steel bars using tools such as scrapers, steel wool, and gauze. This is not only labor-intensive, but also produces poor rust removal quality and is inefficient.

[0003] A search revealed Chinese patent application publication number CN209793404U, which discloses a rust removal device for exposed steel bars embedded in building construction. Belonging to the technical field of rust removal devices, the device includes a support base with an electric telescopic rod mounted on one end of its upper surface. A battery corresponding to the electric telescopic rod is installed inside the support base and electrically connected to it. A rust removal mechanism is located at the top of the electric telescopic rod, comprising a fixed base with rust removal plates on both sides. A limit spring is installed at the connection between the rust removal plates and the fixed base. The rust removal mechanism allows users to remove rust from the steel bars using the rust removal plates. Additionally, a nozzle is provided on the device, allowing users to spray pickling agent onto the steel bars for rust removal, thus improving the rust removal effect.

[0004] However, the device proposed in this patent is integrated into the whole device during the grinding process. It includes heavy components such as motor, electric telescopic rod, storage box, and material pump. The overall weight is large, which makes the operation labor-intensive for workers. It is inconvenient for workers to handle the steel bars at different positions and heights by hand to remove rust. If miniature components are used, the weight is reduced, but the relevant materials are consumed in a very short interval and need to be replenished, which increases the feeding time. Therefore, it needs to be improved. Summary of the Invention

[0005] The purpose of this invention is to solve the problems of existing devices being too heavy, requiring high labor intensity for workers, and being inconvenient for workers to handle rust removal of steel bars at different positions and heights. This invention proposes a rust removal device and method for pre-embedded exposed steel bars in construction engineering.

[0006] The problem to be solved by this invention is achieved by the following technical solution:

[0007] A rust removal device for pre-embedded exposed steel bars in construction engineering is characterized by comprising a fixing plate, wherein: a bracket is fixedly connected to one side of the upper end of the fixing plate, a main sleeve is snapped onto one side of the bracket, a handle is fixedly fixed to the side wall of the main sleeve, a flexible shaft is inserted into the middle of the main sleeve, a motor is fixedly connected to the middle position of the bracket, the main shaft end of the motor is connected to the flexible shaft through a coupling, and a first switch is fixedly connected to the side wall of the main sleeve, the first switch being electrically connected to the motor through a wire;

[0008] The main sleeve is fitted with a secondary sleeve. A first clamping plate is fixedly connected to one side of the secondary sleeve end, and a second clamping plate is connected to the other side of the secondary sleeve end via a rotating shaft. Grinding discs of the same specifications are fixedly connected to the inner walls of the first and second clamping plates. A fixing block is inserted inside the secondary sleeve and is fixedly connected to the end of the flexible shaft.

[0009] Preferably, a material bucket is inserted into the other side of the upper end of the fixing plate, and a liquid pump is fixedly connected to the lower side wall of the bracket. The liquid pump inlet pipe is connected to the material bucket through a pipe.

[0010] Preferably, a second switch is fixedly connected to the side wall of the main sleeve, the second switch is electrically connected to the liquid pump through a wire, a locking block is inserted into the side wall of the end of the main sleeve, a nozzle is locked in the middle of the locking block, a valve is threadedly connected to the liquid inlet of the nozzle, and the other end of the valve is connected to the liquid pump outlet through a pipe.

[0011] Preferably, a first handle bolt is inserted into the side wall of the locking block, the end of the first handle bolt passes through the side wall of the locking block and is threadedly connected to the side wall of the main sleeve, and a second handle bolt is threadedly connected to one side of the locking end of the locking block, and the end of the second handle bolt is threadedly connected to the middle of the locking end on the other side of the locking end of the locking block.

[0012] Preferably, a tension spring is fixedly connected to the side wall of the first clamping plate end, the other end of the tension spring is fixedly connected to the side wall of the second clamping plate end, a pull rope is fixedly connected to the outer side of the second clamping plate end, and a handle is fixedly connected to the other end of the pull rope.

[0013] Preferably, a limiting plate is fixedly connected to the side wall of the secondary sleeve, the end of the handle is slidably engaged in the middle of the limiting plate, the side wall of the limiting plate is provided with a groove matching the handle, the end of the handle is engaged in the middle of the groove, and the lower side wall of the groove is provided with a positioning notch matching the handle.

[0014] Preferably, a third handle bolt is threaded to the upper side wall of the limiting plate, a pressure plate is engaged at the lower end of the third handle bolt, the upper end of the pressure plate is engaged on the outside of the limiting plate, the pressure plate is located at the positioning notch, a stop block is engaged on the inner side of the groove in the middle of the pressure plate, and the stop block is threaded to the end with the third handle bolt.

[0015] Preferably, a positioning plate is snapped onto the side wall of the main sleeve, a support rod is inserted into the side wall of the positioning plate, a pad is fixedly connected to the end of the support rod, a positioning hole is opened in the middle of the pad, the positioning hole corresponds to the center position of the first clamping plate and the second clamping plate, a spring is sleeved in the middle of the support rod, a bushing is sleeved at the end of the support rod, the upper end of the bushing is fixedly connected to the pad, and the lower end of the bushing is fixedly connected to the upper end of the spring.

[0016] Preferably, the top nut of the support rod is connected to a first limiting block located above the pad, and the middle position of the lower end of the support rod is threaded to a second limiting block. The second limiting block is in elastic contact with the lower end of the spring, and the side wall of the second limiting block is threaded to a set screw, which penetrates the side wall of the second limiting block and contacts the support rod.

[0017] A method for removing rust from pre-embedded exposed reinforcing bars used in construction engineering, applied to the aforementioned rust removal device for pre-embedded exposed reinforcing bars used in construction engineering, comprising:

[0018] Step S1: Preparation for rust removal work. Add rust-preventive liquid to the material bucket in advance. Alternatively, quick-setting cement slurry with a certain dilution ratio can be used. Install universal wheel components at the bottom of the fixed plate. Move the fixed plate and move the rust removal device to the exposed steel bar area that needs to be rusted. Then remove the main sleeve assembly from the bracket.

[0019] Step S2: Preparation of the rust removal device. Move the handle along the limiting plate so that the handle moves along the slot. When the end of the handle is engaged in the positioning notch, release the handle. At this time, under the pulling force of the handle, the handle drives the pull rope to rotate the second clamping plate outward, so that the end of the second clamping plate and the port of the first clamping plate open, making it easy to engage with the outside of the steel bar. At this time, the tension spring will be stretched and deformed as the second clamping plate moves.

[0020] Step S3: Rust removal. Holding the main sleeve, align the first and second clamps installed at the end of the main sleeve with the steel reinforcement component that needs rust removal. Remove the handle from inside the positioning notch, so that the second clamp returns to its original position under the tension of the spring. The spring releases its force and contracts accordingly, so that the second clamp and the first clamp are engaged with the end of the steel reinforcement that needs rust removal. Then, turn on the power of the motor through the first switch installed on the side wall of the main sleeve. The motor drives the flexible shaft to rotate. The other end of the flexible shaft will be limited by the fixed block, causing the auxiliary sleeve to rotate synchronously with the flexible shaft. The auxiliary sleeve slides and engages with the end of the main sleeve, and can rotate stably at the end of the main sleeve. The first and second clamps installed at the end of the main sleeve will rotate with the auxiliary sleeve. With the cooperation of the grinding discs installed on the inner side walls of the first and second clamps, the end of the steel reinforcement is continuously ground and rust removed.

[0021] Step S4: Rust removal and protection. After the rust removal work is completed, disconnect the power supply of the motor through the first switch. After the auxiliary sleeve assembly has completely stopped rotating, pull the main sleeve outward to separate the ends of the first and second clamping plates from the ends of the reinforcing bars. Then, remove the nozzle from the middle of the clamping block installed on the side wall of the main sleeve, open the valve, and then connect the power supply of the liquid pump through the second switch. When the liquid pump is working, it will draw out the rust removal liquid from the inside of the material tank, transport it through the pipeline to the nozzle and spray it onto the outer wall of the reinforcing bars, forming a protective layer on the outer wall of the reinforcing bars to reduce the impact of external factors such as rainwater on the reinforcing bars.

[0022] The advantages of this invention compared to existing technologies are as follows:

[0023] 1. The rust removal process and device for pre-embedded exposed steel bars used in this construction project involves installing a main sleeve with a flexible shaft inserted into the upper end of a support. The flexible shaft is connected to the output shaft of a motor, and the motor is then fixed on a fixed plate. A grinding and rust removal component is installed at the other end of the flexible shaft to grind and remove rust from the steel bars. This reduces the force required for hand-held grinding components, reduces work consumption, and facilitates rust removal from the steel bars.

[0024] 2. The rust removal process and device for pre-embedded exposed steel bars used in this construction project involves installing a material tank assembly with a liquid pump connected to the upper end of a fixed plate. After the grinding and rust removal work is completed, the valve is opened, and then the power supply to the liquid pump is connected through the second switch. When the liquid pump is working, it draws out the rust removal liquid from inside the material tank, transports it through the pipeline to the nozzle, and sprays it onto the outer wall of the steel bar, forming a protective layer on the outer wall of the steel bar to reduce the impact of external factors such as rainwater on the steel bar.

[0025] 3. The rust removal process and device for pre-embedded exposed steel bars used in this construction project involves installing a tension spring at the end of the first clamping plate and connecting it to the second clamping plate. Holding the main sleeve, the first and second clamping plates installed at the end of the main sleeve are aligned with the steel bar components that need rust removal. The handle is then removed from inside the positioning notch, causing the second clamping plate to return to its original position under the tension of the tension spring. The tension spring then releases its force and contracts accordingly, allowing the second clamping plate to engage with the first clamping plate at the end of the steel bar that needs rust removal, facilitating the grinding operation.

[0026] 4. The pre-embedded exposed rebar rust removal process and device used in this construction project involves adding a positioning plate assembly to the side wall of the main sleeve. A pad with a support rod structure is installed on the side wall of the positioning plate. The pad with positioning holes is placed on the outside of the rebar. Guided by the support rod, the first and second clamping plates are guided and limited, maintaining the stability of the grinding position. A first and second limiting block installed in the middle of the support rod are used to limit the positioning plate, ensuring the grinding range and preventing contact between the grinding components and the building foundation surface, thus preventing impact damage to the grinding components. A spring is used to connect with the bushing and the positioning plate, providing a reverse elastic force to the positioning plate based on the positioning of the second limiting block, thus buffering the movement of the grinding components installed at the upper end of the positioning plate. A set screw is installed on the side wall of the second limiting block, facilitating the fixing of the second limiting block at different positions on the side wall of the support rod, adapting to different rebar grinding positioning work conditions. The overall mechanism is simpler and more scientific, meeting current design requirements. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the rust removal device for pre-embedded exposed steel bars in building engineering proposed in this invention.

[0028] Figure 2 This is a side view of the rust removal device of the present invention;

[0029] Figure 3 This is a side view of the main sleeve assembly of the rust removal device proposed in this invention;

[0030] Figure 4 This is a schematic diagram of the main sleeve assembly structure of the rust removal device proposed in this invention;

[0031] Figure 5 This is a schematic diagram of the front structure of the main sleeve assembly of the rust removal device proposed in this invention;

[0032] Figure 6 This is a schematic diagram of the internal component structure of the main sleeve assembly of the rust removal device proposed in this invention;

[0033] Figure 7 This is a schematic diagram of the combined structure of the main sleeve assembly and the main sleeve positioning assembly proposed in this invention;

[0034] Figure 8This is a schematic diagram of the front structure of the pad proposed in this invention;

[0035] Figure 9 A process flow diagram is provided for this invention.

[0036] In the diagram: 1. Fixing plate; 2. Bracket; 3. Main sleeve; 4. Handle; 5. Flexible shaft; 6. Motor; 7. First switch; 8. Secondary sleeve; 9. First clamping plate; 10. Second clamping plate; 11. Grinding disc; 12. Fixing block; 13. Material bucket; 14. Liquid pump; 15. Second switch; 16. Clamping block; 17. Nozzle; 18. Valve; 19. First handle bolt; 20. Second handle bolt; 21. Tension spring; 22. Pull rope; 23. Handle; 24. Limiting plate; 25. Slot; 26. Positioning notch; 27. Third handle bolt; 28. Positioning plate; 29. ​​Support rod; 30. Pad; 31. Positioning hole; 32. Spring; 33. Bushing; 34. First limiting block; 35. Second limiting block; 36. Set screw; 37. Stop block; 38. Pressure plate. Detailed Implementation

[0037] The following is based on the appendix Figures 1-8 Further explanation of the present invention:

[0038] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0039] In the description of this invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0040] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0041] like Figures 1-8As shown, the first embodiment of the present invention provides a rust removal device for pre-embedded exposed steel bars in construction engineering based on the prior art. It includes a fixing plate 1, a bracket 2 connected to one side of the upper end of the fixing plate 1 by bolts, a main sleeve 3 clamped to one side of the bracket 2, a handle 4 welded to the side wall of the main sleeve 3, a flexible shaft 5 inserted in the middle of the main sleeve 3, a motor 6 connected to the middle position of the bracket 2 by bolts, the main shaft end of the motor 6 connected to the flexible shaft 5 by a coupling, a first switch 7 connected to the side wall of the main sleeve 3 by bolts, the first switch 7 electrically connected to the motor 6 by a wire, the main sleeve 3 with the flexible shaft 5 inserted is installed on the upper end of the bracket 2, the flexible shaft 5 is connected to the output shaft of the motor 6, and then the motor 6 is fixed on the fixing plate 1. A grinding and rust removal component is installed on the other end of the flexible shaft 5 for grinding and rust removal of the steel bars. This can reduce the force required to apply the hand-held grinding component, reduce work consumption, and facilitate rust removal of the steel bars.

[0042] A secondary sleeve 8 is sleeved at one end of the main sleeve 3. A first clamping plate 9 is bolted to one side of the end of the secondary sleeve 8, and a second clamping plate 10 is bolted to the other side of the end of the secondary sleeve 8. Grinding discs 11 of the same specifications are bolted to the inner walls of the first clamping plate 9 and the second clamping plate 10. A fixing block 12 is inserted inside the secondary sleeve 8 and bolted to the end of the flexible shaft 5. Holding the main sleeve 3, align the first clamping plate 9 and the second clamping plate 10 installed at the end of the main sleeve 3 with the steel reinforcement component that needs rust removal, and then clamp the second clamping plate 10 with the first clamping plate 9 onto the component that needs rust removal. The rust-removed ends of the reinforcing bars are then connected to the power supply of the motor 6 via the first switch 7 installed on the side wall of the main sleeve 3. The motor 6 drives the flexible shaft 5 to rotate. The other end of the flexible shaft 5 will be limited by the fixed block 12, causing the auxiliary sleeve 8 to rotate synchronously with the flexible shaft 5. The auxiliary sleeve 8 is slidably engaged at the end of the main sleeve 3, and can rotate stably at the end of the main sleeve 3. The first clamping plate 9 and the second clamping plate 10 installed at the end of the main sleeve 3 will rotate with the auxiliary sleeve 8. With the cooperation of the grinding discs 11 installed on the inner side walls of the first clamping plate 9 and the second clamping plate 10, the ends of the reinforcing bars are continuously ground and rust-removed.

[0043] A material bucket 13 is inserted into the other side of the upper end of the aforementioned fixed plate 1. A liquid pump 14 is bolted to the lower side wall of the bracket 2. The inlet pipe of the liquid pump 14 is connected to the material bucket 13 through a pipe. A second switch 15 is bolted to the side wall of the main sleeve 3. The second switch 15 is electrically connected to the liquid pump 14 through a wire. A locking block 16 is inserted into the side wall of the end of the main sleeve 3. A nozzle 17 is locked in the middle of the locking block 16. A valve 18 is threaded to the inlet of the nozzle 17. The other end of the valve 18 is connected to the outlet of the liquid pump 14 through a pipe. A first handle bolt 19 is inserted into the side wall of the locking block 16. The end of the first handle bolt 19 passes through the side wall of the locking block 16 and is threaded to the side wall of the main sleeve 3. A second handle bolt 20 is threaded to one side of the locking slot at the end of the locking block 16. The end of the second handle bolt 20 is threaded to the middle of the locking slot on the other side of the end of the locking block 16. The material bucket 13 assembly with the liquid pump 14 is installed on the upper end of the fixed plate 1. After the grinding and rust removal work is completed, the opening is... Valve 18 is used, and then the power supply of liquid pump 14 is turned on through the second switch 15. When liquid pump 14 is working, it will draw out the rust removal liquid from the inside of material tank 13, transport it through the pipeline to the nozzle 17 and spray it onto the outer wall of the steel bar, forming a protective layer on the outer wall of the steel bar, reducing the impact of external factors such as rainwater on the steel bar. The clamp 16 installed at the end of the main sleeve 3 is used to fix the nozzle 17. At the same time, the first handle bolt 19 is installed on the side wall of the clamp 16. Loosening the first handle bolt 19 allows the clamp 16 to be rotated on the side wall of the main sleeve 3, adjusting the angle of the clamp 16, and thus adjusting the angle of the nozzle 17. The nozzle 17 can be fixed on the side wall of the main sleeve 3 to spray the outer side of the steel bar at a fixed angle for protection. The clamp 16 can also be removed as needed for easy disassembly and assembly. The second handle bolt 20 installed at the end of the clamp 16, when tightened, can fix the nozzle 17 in the middle of the clamp 16, further maintaining the stability of the nozzle 17 position.

[0044] A tension spring 21 is bolted to the end sidewall of the first clamping plate 9. The other end of the tension spring 21 is bolted to the end sidewall of the second clamping plate 10. A pull rope 22 is bolted to the outer side of the end of the second clamping plate 10. A handle 23 is bolted to the other end of the pull rope 22. A limiting plate 24 is welded to the sidewall of the auxiliary sleeve 8. The end of the handle 23 is slidably engaged in the middle of the limiting plate 24. A groove 25 matching the handle 23 is provided on the sidewall of the limiting plate 24. In the middle of the slot 25, and with a positioning notch 26 on the lower side wall of the slot 25 that matches the handle 23, a third handle bolt 27 is threadedly connected to the upper side wall of the limiting plate 24. A pressure plate 38 is engaged at the lower end of the third handle bolt 27, and the upper end of the pressure plate 38 is engaged on the outside of the limiting plate 24. The pressure plate 38 is located in the positioning notch 26, and a stop block 37 is engaged inside the groove in the middle of the pressure plate 38. The stop block 37 is threadedly connected to the end with the third handle bolt 27. The first clamping plate 9 is installed at the end. The tension spring 21 is connected to the second clamping plate 10. The handle 23 moves along the limiting plate 24 installed on the side wall of the auxiliary sleeve 8. The end of the handle 23 moves along the slot 25 on the side wall of the limiting plate 24. When the end of the handle 23 is engaged in the positioning notch 26, the handle 23 is released. At this time, under the pulling force of the handle 23, the handle 23 drives the pull rope 22 to rotate the second clamping plate 10 outward, so that the end of the second clamping plate 10 and the port of the first clamping plate 9 are opened, which facilitates the engagement with the outside of the reinforcing bar. At this time, the tension spring 21 will be stretched and deformed as the second clamping plate 10 moves. Holding the main sleeve 3, align the first clamping plate 9 and the second clamping plate 10 installed at the end of the main sleeve 3 with the steel bar component that needs to be derusted. Take the handle 23 out from inside the positioning notch 26, so that the second clamping plate 10 returns to its original position under the tension of the tension spring 21. The tension spring 21 releases its force and contracts accordingly, so that the second clamping plate 10 and the first clamping plate 9 are engaged with the end of the steel bar that needs to be derusted.

[0045] A positioning plate 28 is snapped onto the side wall of the main sleeve 3. A support rod 29 is inserted into the side wall of the positioning plate 28. A pad 30 is bolted to the end of the support rod 29. A positioning hole 31 is opened in the middle of the pad 30, which corresponds to the center position of the first clamping plate 9 and the second clamping plate 10. A spring 32 is sleeved in the middle of the support rod 29. A bushing 33 is sleeved at the end of the support rod 29. The upper end of the bushing 33 is bolted to the pad 30, and the lower end of the bushing 33 is bolted to the upper end of the spring 32. A nut is connected to the top of the support rod 29 to a first limiting block located above the pad 30. 34. A second limiting block 35 is threadedly connected to the middle position of the lower end of the support rod 29. The second limiting block 35 is in elastic contact with the lower end of the spring 32, and a set screw 36 is threadedly connected to the side wall of the second limiting block 35. The set screw 36 passes through the side wall of the second limiting block 35 and contacts the support rod 29. A positioning plate 28 assembly is added to the side wall of the main sleeve 3. A pad 30 with the support rod 29 structure is installed on the side wall of the positioning plate 28. The pad 30 with the positioning hole 31 is placed on the outside of the reinforcing bar. Then the main sleeve 3 is fixed in the middle of the positioning plate 28, so that the first auxiliary sleeve 8 at the end of the main sleeve 3 is installed. Clamping plate 9 and second clamping plate 10 are aligned with the reinforcing steel components that need rust removal. When the rust removal work begins, the first clamping plate 9 and second clamping plate 10 rotate under the drive of the auxiliary sleeve 8, continuously grinding the ends of the reinforcing steel. Then, the main sleeve 3 component is pressed down, and the positioning plate 28 is subjected to force, moving along the support rod 29, causing the first clamping plate 9 and second clamping plate 10 to move downwards, grinding other parts of the reinforcing steel. Under the guidance of the support rod 29, the first clamping plate 9 and second clamping plate 10 can be guided and limited to maintain the stability of the grinding position. The first limiting block 34 and the second limiting block are installed in the middle of the support rod 29. 35 is used to limit the positioning plate 28, ensuring the grinding range, preventing the grinding parts from contacting the building foundation surface, and preventing the grinding parts from being damaged by impact. Spring 32 is used to connect with bushing 33 and positioning plate 28. Based on the positioning of the second limiting block 35, it provides a reverse elastic force to positioning plate 28, which plays a certain buffering role in the movement of the grinding parts installed on the upper end of positioning plate 28. Set screw 36 is installed on the side wall of the second limiting block 35 to facilitate fixing the second limiting block 35 at different positions on the side wall of support rod 29, adapting to different steel bar grinding and rust removal.

[0046] like Figure 9 As shown, the second embodiment of the present invention provides a method for removing rust from pre-embedded exposed steel bars used in construction engineering, based on the first embodiment. The specific steps include:

[0047] Step S1: Preparation for rust removal work. Add rust-preventive liquid to the material bucket 13 in advance. Alternatively, quick-setting cement slurry with a certain dilution ratio can be used. Install universal wheel components at the bottom of the fixing plate 1. Move the fixing plate 1 to move the rust removal device to the exposed steel bar area that needs rust removal. Then remove the main sleeve 3 assembly from the bracket 2.

[0048] Step S2: Preparation of the rust removal device. Move the handle 23 along the limiting plate 24 so that the handle 23 moves along the slot 25. When the end of the handle 23 is engaged in the positioning notch 26, release the handle 23. At this time, under the pulling force of the handle 23, the handle 23 drives the pull rope 22 to rotate the second clamping plate 10 outward, so that the end of the second clamping plate 10 and the port of the first clamping plate 9 are opened, making it easy to engage with the outside of the steel bar. At this time, the tension spring 21 will be stretched and deformed as the second clamping plate 10 moves.

[0049] Step S3: Rust removal. Holding the main sleeve 3, align the first clamp 9 and the second clamp 10 installed at the end of the main sleeve 3 with the steel bar component that needs rust removal. Remove the handle 23 from inside the positioning notch 26, so that the second clamp 10 returns to its original position under the tension of the tension spring 21. The tension spring 21 releases its force and contracts accordingly, so that the second clamp 10 and the first clamp 9 are engaged with the end of the steel bar that needs rust removal. Then, the power supply of the motor 6 is turned on by the first switch 7 installed on the side wall of the main sleeve 3. The motor 6 drives the flexible shaft 5 to rotate. The other end of the flexible shaft 5 will be limited by the fixing block 12, which will drive the auxiliary sleeve 8 to rotate synchronously with the flexible shaft 5. The auxiliary sleeve 8 is slidably engaged with the end of the main sleeve 3 and can rotate stably at the end of the main sleeve 3. The first clamp 9 and the second clamp 10 installed at the end of the main sleeve 3 will rotate with the auxiliary sleeve 8. With the cooperation of the grinding disc 11 installed on the inner side wall of the first clamp 9 and the second clamp 10, the end of the steel bar is continuously ground and rust removed.

[0050] Step S4: Rust removal and protection. After the rust removal work is completed, disconnect the power supply of motor 6 through the first switch 7. After the auxiliary sleeve 8 assembly has completely stopped rotating, pull the main sleeve 3 outward so that the ends of the first clamping plate 9 and the second clamping plate 10 are separated from the ends of the steel bars. Then, remove the nozzle 17 from the middle of the clamping block 16 installed on the side wall of the main sleeve 3, open the valve 18, and then connect the power supply of liquid pump 14 through the second switch 15. When the liquid pump 14 is working, it will draw out the rust removal liquid from the inside of the material tank 13, transport it through the pipeline to the nozzle 17 and spray it onto the outer wall of the steel bars, forming a protective layer on the outer wall of the steel bars to reduce the impact of external factors such as rainwater on the steel bars.

[0051] Although embodiments of the present invention have been disclosed above, they are not limited to the applications listed in the specification and embodiments. It can be applied to various fields suitable for the present invention. Other modifications can be readily made by those skilled in the art. Therefore, without departing from the general concept defined by the claims and their equivalents, the present invention is not limited to the specific details and examples shown and described herein.

Claims

1. A method for removing rust from pre-embedded exposed steel bars used in construction engineering, applied to a device for removing rust from pre-embedded exposed steel bars used in construction engineering, the device for removing rust from pre-embedded exposed steel bars used in construction engineering includes a fixing plate (1), a bracket (2) is fixedly connected to one side of the upper end of the fixing plate (1), a main sleeve (3) is snapped onto one side of the bracket (2), a handle (4) is fixedly fixed to the side wall of the main sleeve (3), a flexible shaft (5) is inserted into the middle of the main sleeve (3), a motor (6) is fixedly connected to the middle position of the bracket (2), the main shaft end of the motor (6) is connected to the flexible shaft (5) through a coupling, a first switch (7) is fixedly connected to the side wall of the main sleeve (3), and the first switch (7) is electrically connected to the motor (6) through a wire; The main sleeve (3) is fitted with a secondary sleeve (8) at one end. A first clamping plate (9) is fixedly connected to one side of the secondary sleeve (8), and a second clamping plate (10) is connected to the other side of the secondary sleeve (8) via a rotating shaft. Grinding discs (11) of the same specifications are fixedly connected to the inner walls of the first clamping plate (9) and the second clamping plate (10). A fixing block (12) is inserted inside the secondary sleeve (8), and the fixing block (12) is fixedly connected to the end of the flexible shaft (5). A material bucket (13) is inserted into the other side of the upper end of the fixed plate (1), and a liquid pump (14) is fixedly connected to the lower side wall of the bracket (2). The liquid pump (14) inlet pipe is connected to the material bucket (13) through a pipe. A second switch (15) is fixedly connected to the side wall of the main sleeve (3). The second switch (15) is electrically connected to the liquid pump (14) through a wire. A locking block (16) is inserted into the side wall of the end of the main sleeve (3). A nozzle (17) is locked in the middle of the locking block (16). A valve (18) is threadedly connected to the inlet of the nozzle (17). The other end of the valve (18) is connected to the outlet of the liquid pump (14) through a pipe. The side wall of the locking block (16) is fitted with a first handle bolt (19), the end of the first handle bolt (19) passes through the side wall of the locking block (16) and is threaded to the side wall of the main sleeve (3). The end of the locking block (16) is threaded to one side of the locking slot, and the end of the second handle bolt (20) is threaded to the middle of the locking slot on the other side of the end of the locking block (16). A tension spring (21) is fixedly connected to the end side wall of the first clamping plate (9), and the other end of the tension spring (21) is fixedly connected to the end side wall of the second clamping plate (10). A pull rope (22) is fixedly connected to the outer side of the end of the second clamping plate (10), and a handle (23) is fixedly connected to the other end of the pull rope (22). The side wall of the secondary sleeve (8) is fixedly connected to a limiting plate (24), and the end of the handle (23) is slidably engaged in the middle of the limiting plate (24). The side wall of the limiting plate (24) is provided with a slot (25) that matches the handle (23). The end of the handle (23) is engaged in the middle of the slot (25), and the lower side wall of the slot (25) is provided with a positioning notch (26) that matches the handle (23). The upper side wall of the limiting plate (24) is threaded with a third handle bolt (27), and the lower end of the third handle bolt (27) is engaged with a pressure plate (38). The upper end of the pressure plate (38) is engaged with the outside of the limiting plate (24). The pressure plate (38) is located in the positioning notch (26). A stop block (37) is engaged with the inner side of the groove in the middle of the pressure plate (38). The stop block (37) is threadedly connected to the end with the third handle bolt (27). The method includes: Step S1: Preparation for rust removal work. Add rust-preventive liquid to the material bucket (13) in advance, or use quick-setting cement slurry with a certain dilution ratio. Install universal wheel components at the bottom of the fixing plate (1). Move the fixing plate (1) to move the rust removal device to the exposed steel bar area that needs to be rusted. Then remove the main sleeve (3) assembly from the bracket (2). Step S2: Preparation of the rust removal device. Move the handle (23) along the limiting plate (24) so ​​that the handle (23) moves along the slot (25). When the end of the handle (23) is engaged in the positioning notch (26), release the handle (23). At this time, under the pulling force of the handle (23), the handle (23) drives the pull rope (22) to rotate the second clamp (10) outward, so that the end of the second clamp (10) and the port of the first clamp (9) open, making it easy to engage with the outside of the steel bar. At this time, the tension spring (21) will be stretched and deformed as the second clamp (10) moves. Step S3: Rust removal. Holding the main sleeve (3), align the first clamp (9) and the second clamp (10) installed at the end of the main sleeve (3) with the steel bar component that needs rust removal. Remove the handle (23) from inside the positioning notch (26), so that the second clamp (10) returns to its original position under the tension of the tension spring (21). The tension spring (21) releases its force and contracts accordingly, so that the second clamp (10) and the first clamp (9) are engaged with the end of the steel bar that needs rust removal. Then, turn on the motor (6) through the first switch (7) installed on the side wall of the main sleeve (3). The power supply of the motor (6) drives the flexible shaft (5) to rotate. The other end of the flexible shaft (5) will be limited by the fixed block (12) and drive the auxiliary sleeve (8) to rotate synchronously with the flexible shaft (5). The auxiliary sleeve (8) is slidably clamped at the end of the main sleeve (3) and can rotate stably at the end of the main sleeve (3). The first clamping plate (9) and the second clamping plate (10) installed at the end of the main sleeve (3) will rotate with the auxiliary sleeve (8). With the cooperation of the grinding disc (11) installed on the inner side wall of the first clamping plate (9) and the second clamping plate (10), the end of the steel bar is continuously ground and rusted. Step S4: Rust removal and protection. After the rust removal work is completed, disconnect the power supply of the motor (6) through the first switch (7). After the auxiliary sleeve (8) assembly stops completely, pull the main sleeve (3) outward so that the ends of the first clamp (9) and the second clamp (10) are separated from the ends of the steel bars. Then, take the nozzle (17) out from the middle of the clamp (16) installed on the side wall of the main sleeve (3), open the valve (18), and then connect the power supply of the liquid pump (14) through the second switch (15). When the liquid pump (14) is working, it will draw out the rust removal liquid from the inside of the material tank (13), transport it through the pipeline to the nozzle (17) and spray it onto the outer wall of the steel bars, forming a protective layer on the outer wall of the steel bars to reduce the impact of external factors such as rainwater on the steel bars.

2. The method for rust removal of pre-embedded exposed steel bars in building engineering according to claim 1, characterized in that, The main sleeve (3) has a positioning plate (28) snapped onto its side wall. A support rod (29) is inserted into the side wall of the positioning plate (28). A pad (30) is fixedly connected to the end of the support rod (29). A positioning hole (31) is opened in the middle of the pad (30). The positioning hole (31) corresponds to the center position of the first clamping plate (9) and the second clamping plate (10). A spring (32) is sleeved in the middle of the support rod (29). A bushing (33) is sleeved at the end of the support rod (29). The upper end of the bushing (33) is fixedly connected to the pad (30), and the lower end of the bushing (33) is fixedly connected to the upper end of the spring (32).

3. The method for rust removal of pre-embedded exposed steel bars in building engineering according to claim 2, characterized in that, The top nut of the support rod (29) is connected to a first limiting block (34) located above the pad (30). The middle position of the lower end of the support rod (29) is threaded with a second limiting block (35). The second limiting block (35) is in elastic contact with the lower end of the spring (32). The side wall of the second limiting block (35) is threaded with a set screw (36). The set screw (36) passes through the side wall of the second limiting block (35) and contacts the support rod (29).

Images