Steel bar processing device and processing method for construction site

Abstract

The present invention discloses a steel bar processing device for construction sites and a processing method thereof, comprising a workbench, a placement groove is provided in the middle of the upper surface of the workbench, four mounting seats are provided on the upper surface of the workbench, a threaded rod is provided on the top of the mounting seat, a pressure plate is provided at the bottom of the threaded rod, sliders are symmetrically provided on both sides of the pressure plate, sliding grooves are provided on the inner walls on both sides of the inner cavity of the mounting seat, a spring is provided at the bottom of the slider, sealing plates are provided on both sides of the inner cavity of the placement groove, a plurality of water-permeable grooves are provided at the bottom of the inner cavity of the placement groove, a wastewater recovery box is provided at the bottom of the workbench, and a connecting frame is provided on the wastewater recovery box. The present invention utilizes a setting method in which the mounting seat, the threaded rod, the pressure plate, the slider, the spring, the sealing plate, the water-permeable groove and the wastewater recovery box are matched, so as to facilitate adjusting the overlapping area between the sealing plate and the water-permeable groove according to the distribution of rust spots of the steel bar, reduce the waste of rust removal liquid, and thus improve the overall processing efficiency and practicality.

Description

Technical Field

[0001] The invention relates to the field of steel bar processing, and in particular to a steel bar processing device for a construction site and a processing method thereof. Background Art

[0002] Rebar refers to steel used for reinforced concrete and prestressed reinforced concrete. Its cross-section is round, sometimes square with rounded corners, including plain round steel, ribbed steel, and twisted steel. Rebar is widely used in various building structures, especially large, heavy, light thin-walled and high-rise building structures. Rebar processing includes straightening, rust removal, cutting, lengthening, bending, etc., among which steel bar rust removal refers to the removal of oil stains, paint stains, and floating skin and rust that can be peeled off when struck with a hammer. Before welding, the water rust at the welding point should be cleaned. The rust removal of steel bars can generally be completed in the following ways: First, rust removal during the cold drawing of steel bars or the straightening of steel wires, which is more economical and labor-saving for the rust removal of a large number of steel bars; second, rust removal by mechanical methods, such as rust removal with an electric rust remover, which is more convenient for local rust removal of steel bars; third, rust removal of steel bars by steel bar rust remover, and phytic acid and organic acid can be used to spray various types of threaded steel stock liquid in different states evenly; fourth, rust removal of steel bars by environmentally friendly water sandblasting machine.

[0003] In the prior art, the rust removal method of rust remover is to manually carry a sprayer and use the nozzle to spray the surface of piles and bundles of steel bars. However, this cleaning method easily causes the heavy rust spots on the steel bars to not be completely cleaned, resulting in cleaning dead corners, which requires subsequent repair and cleaning, thereby increasing the overall cleaning time and reducing the overall practicality. Summary of the invention

[0004] The object of the present invention is to provide a steel bar processing device and a processing method for a construction site to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a steel bar processing device for construction sites and a processing method thereof, comprising a workbench, a placement groove is provided in the middle of the upper surface of the workbench, and the upper surface of the workbench is fixedly connected with four mounting seats in a rectangular array, the top of the mounting seat is threadedly inserted with a threaded rod, and the bottom of the threaded rod is provided with a pressure plate, and sliders are symmetrically fixedly connected on both sides of the pressure plate, and sliding grooves matching with the sliders are provided on the inner walls on both sides of the inner cavity of the mounting seat, and a spring is fixedly connected to the bottom of the slider, and sealing plates are movably inserted and connected on both sides of the inner cavity of the placement groove, and a plurality of water-permeable grooves are equidistantly spaced at the bottom of the inner cavity of the placement groove, and a wastewater recovery tank is provided at the bottom of the workbench, and a connecting frame is movably inserted and connected to the wastewater recovery tank.

[0006] Preferably, the top of the threaded rod is fixedly connected to an auxiliary turntable, the upper surface of the auxiliary turntable is symmetrically provided with arc grooves, a protective pad is fixedly connected to the inner wall of the inner cavity of the arc groove, and the bottom of the threaded rod is fixedly connected to a contact plate, and the lower surface of the contact plate is in contact with the upper surface of the pressure plate.

[0007] Preferably, the outer wall of the slider is slidably and interspersedly connected to the inner cavity of the slide groove, the bottom of the spring is fixedly connected to the bottom of the inner cavity of the slide groove, a protective pad is fixedly connected to the lower surface of the pressure plate, a first groove is opened on the inner walls on both sides of the placement groove inner cavity, the inner cavity of the first groove is slidably and interspersedly connected to the outer wall of the sealing plate, sealing rings are fixedly connected to the inner walls on both sides of the placement groove inner cavity, and the inner wall of the sealing ring inner cavity is slidably and interspersedly connected to the outer wall of the sealing plate.

[0008] Preferably, limit plates are symmetrically arranged on the upper surfaces of the two sealing plates, and positioning pins are symmetrically threaded and inserted on the limit plates. Mounting holes matching the positioning pins are symmetrically opened on the upper surfaces of the two sealing plates. A second groove is opened on the upper surface of the wastewater recovery box and the lower surface of the workbench. The inner cavity of the second groove is movably connected to the outer wall of the connecting frame, and bolts are symmetrically threaded and inserted on both sides of the connecting frame.

[0009] Preferably, limiting grooves are symmetrically provided on the outer walls on both sides of the wastewater recovery box, rectangular grooves are provided on both sides of the wastewater recovery box, grip rods are threadedly inserted and connected on both sides of the connecting frame, a first sponge pad is fixedly sleeved on the outer wall of the grip rod, first handles are fixedly connected on both sides of the wastewater recovery box, and a second sponge pad is fixedly sleeved on the outer wall of the first handle.

[0010] Preferably, the upper surface of the workbench is fixedly connected to a bracket, the upper surface of the bracket is fixedly connected to a storage box, the bottom of the inner cavity of the storage box is fixedly connected to a partition, the bottom of the inner cavity of the storage box is fixedly connected to a water pump, the water inlet of the water pump is fixedly connected to a water inlet pipe, and the water outlet of the water pump is fixedly connected to a water outlet pipe.

[0011] Preferably, the outer wall of the water inlet pipe is fixedly connected with the partition, the lower surface of the bracket is fixedly connected with a connecting rod, the inner cavity of the connecting rod is fixedly connected with the outer wall of the water outlet pipe, the bottom of the connecting rod is fixedly connected with a cleaning plate, and a plurality of sprayers are fixedly connected with equal intervals on the cleaning plate.

[0012] Preferably, an injection tube is fixedly inserted and connected to the top of the storage box, a sealing cover is threadedly sleeved on the outer wall of the top of the injection tube, and a plurality of semicircular grooves are equidistantly spaced on both sides of the workbench.

[0013] Preferably, an installation groove is provided on the bracket, the inner cavity of the installation groove is fixedly connected with the outer wall of the water outlet pipe, a second handle is fixedly connected to one side of the sealing plate, a third sponge pad is fixedly sleeved on the outer wall of the second handle, and the lower surface of the wastewater recovery tank is fixedly connected with four foot supports in a rectangular array, the bottom of the foot support is fixedly connected with a universal wheel, and the universal wheel is provided with a wheel brake.

[0014] The present invention also provides a method for processing steel bars for construction sites, comprising the following specific steps:

[0015] Step 1: Place the outer walls of the two ends of the multiple steel bars at the bottom of the inner cavity of the semicircular groove on both sides of the workbench, and then rotate the auxiliary turntable so that the bottom of the contact plate drives the pressure plate to move downward, so that the slider performs limited sliding in the inner cavity of the slide groove, so that the spring is compressed, and after the lower surface of the protective pad fits with the top of the outer walls of the two ends of the steel bar, stop rotating the auxiliary turntable to fix the height position of the pressure plate and prevent the steel bar from deflecting or jumping on the surface of the workbench;

[0016] Step 2: Push the first handle to place the wastewater recovery tank on the lower surface of the workbench, then screw the grip rods into both sides of the wastewater recovery tank. After the grip rods are fixed, lift the grip rods upward to fit the upper surface of the connecting frame with the top of the inner cavity of the second groove on the lower surface of the workbench, and then rotate the bolts to fix the external connection frame to prevent the water source from overflowing from the inner cavity of the wastewater recovery tank when it falls.

[0017] Step three: Pull the second handle according to the rust condition of the steel bar surface, so that the second handle drives the sealing plate to slide in the inner cavity of the first groove, and use the distance between the opposite sides of the two sealing plates to control the connection area between the water-permeable groove and the placement groove, and then pour the external cleaning liquid into the inner cavity of the injection tube, and then rotate the sealing cover to seal the storage box, and then start the water pump to make the cleaning liquid enter the inner cavity of the water outlet pipe from the water inlet pipe, and then enter the inner cavity of the cleaning plate through the connecting rod, and finally spray out from the sprayer to spray the surface of the steel bar, and then manually rotate the steel bar at a fixed time, or pull the steel bar until all the rusted surfaces of the steel bar are sprayed.

[0018] Technical effects and advantages of the present invention:

[0019] (1) The present invention utilizes a placement groove, a mounting seat, a threaded rod, a pressure plate, a slider, a slide groove, a spring, a sealing plate, a water-permeable groove, and a wastewater recovery box to coordinately arrange the overlapping area between the sealing plate and the water-permeable groove according to the distribution of rust spots on the steel bars, thereby reducing the waste of rust removal liquid, thereby improving the overall processing efficiency and practicality;

[0020] (2) The present invention utilizes the coordinated arrangement of the auxiliary rotating disk, the arc groove, the protective pad, the contact plate, the protective pad, the first groove, the placement groove, the sealing ring, the limit plate, the positioning pin and the mounting hole to improve the flexibility of the threaded rod rotation, improve the sealing of the placement groove, improve the flexibility and stability of the sealing plate position adjustment, and thus improve the overall practicality;

[0021] (3) The present invention utilizes the coordinated arrangement of the second groove, the connecting frame, the rectangular groove, the limit groove, the grip rod and the first handle to improve the flexibility and stability of the height adjustment of the connecting frame, and utilizes the coordinated arrangement of the bracket, the storage box, the water pump, the water inlet pipe, the water outlet pipe, the connecting rod, the cleaning plate, the sprayer and the injection tube to improve the continuity and smoothness of the rust removal liquid spraying, thereby improving the overall practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0023] Figure 2 It is a schematic diagram of the overall structure of the present invention.

[0024] Figure 3 It is a schematic diagram of the internal structure of the front side of the present invention.

[0025] Figure 4 It is a schematic diagram of the front internal structure of the mounting seat of the present invention.

[0026] Figure 5 It is a schematic diagram of the internal structure of the side of the present invention.

[0027] Figure 6 It is a schematic diagram of the internal structure of the storage box on the side of the present invention.

[0028] Figure 7 It is a schematic diagram of the side internal structure of the wastewater recovery tank of the present invention.

[0029] Figure 8 It is a schematic diagram of the internal structure of the slider of the present invention from a top view.

[0030] In the figure: 1. workbench; 2. placement groove; 3. mounting seat; 4. threaded rod; 5. auxiliary turntable; 6. contact plate; 7. pressure plate; 8. slider; 9. slide groove; 10. spring; 11. protection pad; 12. first groove; 13. sealing plate; 14. limit plate; 15. positioning pin; 16. mounting hole; 17. wastewater recovery tank; 18. second groove; 19. connecting frame; 20. bolt; 21. rectangular groove; 22. grip; 23. first handle; 24. bracket; 25. storage box; 26. partition; 27. water pump; 28. water inlet pipe; 29. ​​water outlet pipe; 30. connecting rod; 31. cleaning plate; 32. injection tube; 33. water permeable groove; 34. second handle. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] The present invention provides Figure 1-8 The steel bar processing device and processing method for construction sites shown in the figure include a workbench 1, the cross-sectional shapes of the workbench 1 and the placement groove 2 are both rectangular, the placement groove 2 is opened in the middle of the upper surface of the workbench 1, the upper surface of the workbench 1 is in a rectangular array and fixedly connected with four mounting seats 3, the front cross-sectional shape of the mounting seat 3 is U-shaped, which is convenient for the installation of the threaded rod 4, the top of the mounting seat 3 is threadedly connected with the threaded rod 4, and the bottom of the threaded rod 4 is provided with a pressing plate 7, the cross-sectional shape of the pressing plate 7 is rectangular, and sliders 8 are symmetrically fixedly connected on both sides of the pressing plate 7, and the inner walls on both sides of the inner cavity of the mounting seat 3 are opened with sliding grooves 9 that match the sliders 8, and the top view of the sliders 8 and the sliding grooves 9 The cross-sectional shapes are all convex, which is convenient for the slider 8 to slide in the inner cavity of the slide groove 9. The bottom of the slider 8 is fixedly connected with a spring 10, and the spring 10 is a compression spring, which improves the limiting property of the top of the steel bar. The two sides of the inner cavity of the placement groove 2 are movably connected with sealing plates 13, and the cross-sectional shape of the sealing plate 13 is rectangular. A plurality of permeable grooves 33 are equidistantly spaced at the bottom of the inner cavity of the placement groove 2, which is convenient for the rust removal liquid to fall into the inner cavity of the wastewater recovery box 17. A wastewater recovery box 17 is provided at the bottom of the workbench 1, and a connecting frame 19 is movably connected to the wastewater recovery box 17, which improves the sealing between the lower surface of the workbench 1 and the wastewater recovery box 17 to prevent the rust removal liquid from spilling.

[0033] An auxiliary turntable 5 is fixedly connected to the top of the threaded rod 4, and arc grooves are symmetrically opened on the upper surface of the auxiliary turntable 5. A protective pad is fixedly connected to the inner wall of the inner cavity of the arc groove, which is convenient for the user to rotate the auxiliary turntable 5. A contact plate 6 is fixedly connected to the bottom of the threaded rod 4. The top-view cross-sectional shape of the contact plate 6 is circular, and the lower surface of the contact plate 6 is in contact with the upper surface of the pressure plate 7 to avoid damaging the surface of the pressure plate 7.

[0034] The outer wall of the slider 8 is slidably connected to the inner cavity of the slide groove 9, and the bottom of the spring 10 is fixedly connected to the bottom of the inner cavity of the slide groove 9 to avoid bending of the spring 10. A protective pad 11 is fixedly connected to the lower surface of the pressure plate 7 to avoid scratching the surface of the steel bar. A first groove 12 is provided on the inner walls on both sides of the inner cavity of the placement groove 2. The cross-sectional shape of the first groove 12 is rectangular. The inner cavity of the first groove 12 is slidably connected to the outer wall of the sealing plate 13. Sealing rings are fixedly connected to the inner walls on both sides of the inner cavity of the placement groove 2. The inner wall of the inner cavity of the sealing ring is slidably connected to the outer wall of the sealing plate 13, which improves the sealing of the inner cavity of the placement groove 2 and avoids the movement of the sealing plate 13 causing the rust removal liquid to overflow.

[0035] The upper surfaces of the two sealing plates 13 are symmetrically provided with limit plates 14, and the cross-sectional shape of the limit plates 14 is rectangular, which is convenient for dust-proof sealing when the water-permeable groove 33 is not in use. The limit plates 14 are symmetrically threaded and interspersed with positioning pins 15, which improves the flexibility of position limitation of the sealing plates 13. The upper surfaces of the two sealing plates 13 are symmetrically provided with mounting holes 16 that match the positioning pins 15. The upper surface of the wastewater recovery box 17 and the lower surface of the workbench 1 are both provided with a second groove 18. The top-view cross-sectional shape of the second groove 18 and the connecting frame 19 are both in the shape of a U-shaped character, which is convenient for the connecting frame 19 to slide in a limited position in the inner cavity of the second groove 18. The inner cavity of the second groove 18 is movably interspersed with the outer wall of the connecting frame 19, and the two sides of the connecting frame 19 are symmetrically threaded and interspersed with bolts 20, which improves the flexibility and stability of the position fixing of the connecting frame 19.

[0036] Limiting grooves are symmetrically provided on the outer walls on both sides of the wastewater recovery box 17 to facilitate the position limitation of the bolts 20, and the range of the limiting grooves is smaller than the thickness of the wastewater recovery box 17 to avoid leakage of the wastewater recovery box 17. Rectangular grooves 21 are provided on both sides of the wastewater recovery box 17, and grip rods 22 are threadedly inserted and connected on both sides of the connecting frame 19 to facilitate the lifting of the connecting frame 19. A first sponge pad is fixedly sleeved on the outer wall of the grip rod 22 to prevent the user from wearing out his hands. A first handle 23 is fixedly connected on both sides of the wastewater recovery box 17, and a second sponge pad is fixedly sleeved on the outer wall of the first handle 23 to facilitate the movement of the wastewater recovery box 17.

[0037] A bracket 24 is fixedly connected to the upper surface of the workbench 1. The cross-sectional shape of the bracket 24 is C-shaped, which is convenient for the fixed installation of the storage box 25. The upper surface of the bracket 24 is fixedly connected to the storage box 25. The bottom of the inner cavity of the storage box 25 is fixedly connected to a partition 26, which is convenient for separating the water pump 27 from the rust removal liquid. The bottom of the inner cavity of the storage box 25 is fixedly connected to the water pump 27. The water pump 27 is electrically connected to an external power supply through an external switch. The water inlet of the water pump 27 is fixedly connected with a water inlet pipe 28, and the water outlet of the water pump 27 is fixedly connected with a water outlet pipe 29.

[0038] The outer wall of the water inlet pipe 28 is fixedly connected with the partition 26, the lower surface of the bracket 24 is fixedly connected with a connecting rod 30, the inner cavity of the connecting rod 30 is fixedly connected with the outer wall of the water outlet pipe 29, and the bottom of the connecting rod 30 is fixedly connected with a cleaning plate 31. A plurality of sprayers are fixedly connected with equal intervals on the cleaning plate 31 to facilitate the uniform spraying of the rust removal liquid on the surface of the steel bars.

[0039] An injection tube 32 is fixedly inserted and connected to the top of the storage box 25 to facilitate the injection of rust removal liquid. After the rust removal liquid is sprayed on the surfaces of all steel bars, water can be poured into the inner cavity of the storage box 25 to facilitate the cleaning of the rust removal liquid, thereby improving the practicality of the steel bars. A sealing cover is threadedly sleeved on the outer wall of the top of the injection tube 32, and a plurality of semicircular grooves are equidistantly spaced on both sides of the workbench 1 to improve the positioning of the steel bars.

[0040] The bracket 24 is provided with a mounting groove, and the cross-sectional shape of the mounting groove is as follows: Figure 6 As shown, it is convenient to define the position of the water outlet pipe 29, the inner cavity of the installation groove is fixedly connected with the outer wall of the water outlet pipe 29, a second handle 34 is fixedly connected to one side of the sealing plate 13, and a third sponge pad is fixedly sleeved on the outer wall of the second handle 34, which is convenient for the movement of the sealing plate 13, and the lower surface of the wastewater recovery tank 17 is fixedly connected with four foot supports in a rectangular array, and the bottom of the foot supports is fixedly connected with a universal wheel, and the universal wheel is provided with a wheel brake, which improves the mobility of the wastewater recovery tank 17.

[0041] The present invention provides a method of use:

[0042] Place the outer walls of the two ends of the multiple steel bars at the bottom of the inner cavity of the semicircular groove on both sides of the workbench 1, and then rotate the auxiliary turntable 5 so that the bottom of the contact plate 6 drives the pressure plate 7 to move downward, so that the slider 8 performs limited sliding in the inner cavity of the slide groove 9, so that the spring 10 is compressed. After the lower surface of the protection pad 11 is in contact with the top of the outer walls of the two ends of the steel bars, stop rotating the auxiliary turntable 5, so that the height position of the pressure plate 7 is fixed, and at the same time, the steel bars are prevented from deflecting or jumping on the surface of the workbench 1;

[0043] Push the first handle 23 to place the wastewater recovery tank 17 on the lower surface of the workbench 1, then screw the grip 22 into both sides of the wastewater recovery tank 17. After the grip 22 is fixed, lift the grip 22 upward to fit the upper surface of the connecting frame 19 with the top of the inner cavity of the second groove 18 on the lower surface of the workbench 1. Then, rotate the bolt 20 to fix the external connection frame 19 to prevent the water source from overflowing the inner cavity of the wastewater recovery tank 17 when it falls.

[0044] According to the rust condition of the steel bar surface, the second handle 34 is pulled so that the second handle 34 drives the sealing plate 13 to slide in the inner cavity of the first groove 12. The distance between the opposite sides of the two sealing plates 13 is used to control the connection area between the water-permeable groove 33 and the placement groove 2. Then, the external cleaning liquid is poured into the inner cavity of the injection tube 32, and then the sealing cover is rotated to seal the storage box 25. Then, the water pump 27 is started to allow the cleaning liquid to enter the inner cavity of the water outlet pipe 29 from the water inlet pipe 28, and then enter the inner cavity of the cleaning plate 31 through the connecting rod 30, and finally sprayed out from the sprayer to spray the steel bar surface. Then, the steel bar is manually rotated at a fixed time, or the steel bar is pulled until all the rusted surfaces of the steel bar are sprayed, so that the rust spots on the surface of the steel bar are completely removed, thereby improving the overall practicality and cleaning efficiency.

[0045] Finally, it should be noted that the above are only preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A steel bar processing device for a construction site, comprising a workbench (1), characterized in that: A placement groove (2) is provided in the middle of the upper surface of the workbench (1), and four mounting seats (3) are fixedly connected to the upper surface of the workbench (1) in a rectangular array. A threaded rod (4) is inserted and connected to the top of the mounting seat (3), and a pressure plate (7) is provided at the bottom of the threaded rod (4). Slide blocks (8) are symmetrically fixedly connected to both sides of the pressure plate (7). Slide grooves (9) matching with the slide blocks (8) are provided on the inner walls of both sides of the inner cavity of the mounting seat (3), and a spring (10) is fixedly connected to the bottom of the slide block (8). Sealing plates (13) are movably inserted and connected to both sides of the inner cavity of the placement groove (2), and a plurality of water-permeable grooves (3) are equidistantly provided at the bottom of the inner cavity of the placement groove (2). 3), a wastewater recovery box (17) is arranged at the bottom of the workbench (1), and a connecting frame (19) is movably connected to the wastewater recovery box (17); an auxiliary turntable (5) is fixedly connected to the top of the threaded rod (4), and an arc groove is symmetrically opened on the upper surface of the auxiliary turntable (5), and a protective pad is fixedly connected to the inner wall of the inner cavity of the arc groove; a contact plate (6) is fixedly connected to the bottom of the threaded rod (4), and the lower surface of the contact plate (6) is in contact with the upper surface of the pressure plate (7); the outer wall of the slider (8) is slidably connected to the inner cavity of the slide groove (9), the bottom of the spring (10) is fixedly connected to the bottom of the inner cavity of the slide groove (9), and the lower surface of the pressure plate (7) is fixedly connected to the protective pad. The protective pad (11) comprises a first groove (12) on the inner walls of both sides of the inner cavity of the placement groove (2), the inner cavity of the first groove (12) is connected with the outer wall of the sealing plate (13) by sliding and inserting, and a sealing ring is fixedly connected with the inner walls of both sides of the inner cavity of the placement groove (2), and the inner wall of the inner cavity of the sealing ring is connected with the outer wall of the sealing plate (13) by sliding and inserting; the upper surfaces of the two sealing plates (13) are symmetrically provided with a limit plate (14), and the limit plate (14) is symmetrically threaded and inserted with a positioning pin (15), and the upper surfaces of the two sealing plates (13) are symmetrically provided with a mounting hole (16) matched with the positioning pin (15), and the upper surface of the wastewater recovery tank (17) and the workbench (1 ) are provided with a second groove (18) on the lower surface, the inner cavity of the second groove (18) is movably connected with the outer wall of the connecting frame (19), and the two sides of the connecting frame (19) are symmetrically threaded and connected with bolts (20); the outer walls of the two sides of the wastewater recovery box (17) are symmetrically provided with limit grooves, and the two sides of the wastewater recovery box (17) are provided with rectangular grooves (21), and the two sides of the connecting frame (19) are threaded and connected with a grip rod (22), and the outer wall of the grip rod (22) is fixedly sleeved with a first sponge pad, and the two sides of the wastewater recovery box (17) are fixedly connected with a first handle (23), and the outer wall of the first handle (23) is fixedly sleeved with a second sponge pad;The upper surface of the workbench (1) is fixedly connected to a bracket (24), the upper surface of the bracket (24) is fixedly connected to a storage box (25), the bottom of the inner cavity of the storage box (25) is fixedly connected to a partition (26), the bottom of the inner cavity of the storage box (25) is fixedly connected to a water pump (27), the water inlet of the water pump (27) is fixedly connected to a water inlet pipe (28), and the water outlet of the water pump (27) is fixedly connected to a water outlet pipe (29); the outer wall of the water inlet pipe (28) is fixedly connected to the partition (26), the lower surface of the bracket (24) is fixedly connected to a connecting rod (30), the inner cavity of the connecting rod (30) is fixedly connected to the outer wall of the water outlet pipe (29), and the bottom of the connecting rod (30) is fixedly connected to a cleaning plate (31), a plurality of sprayers are fixedly connected and inserted at equal intervals on the cleaning plate (31); an injection tube (32) is fixedly connected and inserted at the top of the storage box (25), a sealing cover is threadedly sleeved on the outer wall of the top of the injection tube (32), and a plurality of semicircular grooves are equidistantly provided on both sides of the workbench (1); a mounting groove is provided on the bracket (24), the inner cavity of the mounting groove is fixedly connected and inserted with the outer wall of the water outlet pipe (29), a second handle (34) is fixedly connected to one side of the sealing plate (13), a third sponge pad is fixedly sleeved on the outer wall of the second handle (34), and four foot supports are fixedly connected to the lower surface of the wastewater recovery box (17) in a rectangular array, a universal wheel is fixedly connected to the bottom of the foot support, and a wheel brake is arranged on the universal wheel. ; 2. A method for processing steel bars for construction sites, characterized in that: The specific usage steps are as follows: Step 1: Place the outer walls of the two ends of the plurality of steel bars at the bottom of the inner cavity of the semicircular groove on both sides of the workbench (1), and then rotate the auxiliary turntable (5) so that the bottom of the contact plate (6) drives the pressure plate (7) to move downward, so that the slider (8) performs limited sliding in the inner cavity of the slide groove (9), so that the spring (10) is compressed, and after the lower surface of the protection pad (11) is in contact with the top of the outer walls of the two ends of the steel bars, stop rotating the auxiliary turntable (5) so that the height position of the pressure plate (7) is fixed, and at the same time, the steel bars are prevented from deflecting or jumping on the surface of the workbench (1); Step 2: Push the first handle (23) so that the wastewater recovery box (17) is located on the lower surface of the workbench (1), and then screw the grip rod (22) into both sides of the wastewater recovery box (17). After the grip rod (22) is fixed in position, lift the grip rod (22) upward so that the upper surface of the connecting frame (19) fits with the top of the inner cavity of the second groove (18) on the lower surface of the workbench (1), and then rotate the bolt (20) to fix the external connection frame (19) to prevent the water source from overflowing from the inner cavity of the wastewater recovery box (17) when falling; Step 3: Pull the second handle (34) according to the rust condition of the steel bar surface, so that the second handle (34) drives the sealing plate (13) to slide in the inner cavity of the first groove (12) within a limited position, and use the distance between the opposite sides of the two sealing plates (13) to control the communication area between the water-permeable groove (33) and the placement groove (2), then pour the external cleaning liquid into the inner cavity of the injection tube (32), and then rotate the sealing cover to seal the storage box (25), and then start the water pump (27) to allow the cleaning liquid to enter the inner cavity of the water outlet pipe (29) from the water inlet pipe (28), and then enter the inner cavity of the cleaning plate (31) through the connecting rod (30), and finally spray out from the sprayer, thereby spraying the steel bar surface, and then manually rotate the steel bar at a fixed time, or pull the steel bar until all the rusted surfaces of the steel bar are sprayed.

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