Rust removal device for bridge construction steel bars

Abstract

The invention relates to the technical field of steel bar rust removal, and discloses a bridge construction steel bar rust removal device which comprises a rack, first mounting plates are fixedly mounted at the tops of the left end and the right end of the rack correspondingly, a feeding assembly is arranged on each first mounting plate, and a second mounting plate is welded to the middle of the rack; and a portal frame is fixedly mounted at the top of the second mounting plate, a U-shaped plate is slidably connected into the portal frame, a supporting assembly is arranged on the side face of the U-shaped plate, and the surface of the supporting assembly is sleeved with a polishing abrasive belt. The two-way threaded rod is rotated to drive the two sets of sliding pieces to move oppositely, a tension spring is pulled, and the pulling force of a connecting plate on a rotating arm is increased, so that when a reinforcing steel bar is extruded on the surface of the grinding abrasive belt, larger force is needed when the grinding abrasive belt is driven to deform, and the extrusion force of the grinding abrasive belt on the reinforcing steel bar is increased; in addition, the extrusion force between the grinding abrasive belt and the reinforcing steel bar can be adjusted through the telescopic length of the output end of the air cylinder, and therefore the purpose that the friction force on the reinforcing steel bar is stable and adjustable is achieved.

Description

Technical Field

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

[0002] During the construction of bridges and buildings, it is necessary to cast concrete structural columns and preset steel cages inside the structural columns to enhance the tensile strength of the structural columns. Since the steel bars are difficult to use in time after purchase, they need to be stored in warehouses or piled in open fields for a period of time, and a layer of rust will form on the surface of the steel bars. Therefore, before using the steel bars, it is necessary to remove the rust from the steel bars. This prevents the rusted steel bars from continuing to rust inside the structural columns and affecting the strength of the structural columns.

[0003] The Chinese patent with application date: 2022.08.06 and announcement number: CN115464527B discloses a steel bar rust removal machine, which relates to the field of steel bar processing equipment, including a rust removal component and a feeding component. The rust removal component includes a first support frame, a rust removal cylinder, a cleaning member and a driving member. The rust removal cylinder is coaxially fixedly connected with a circular tube at both ends along the axial direction, and the end of the rust removal cylinder is rotatably connected to the first support frame through the circular tube. The cleaning member is located in the rust removal cylinder, and the driving member is used to drive the rust removal cylinder to rotate. The feeding component is located at one end of the rust removal cylinder along the axial direction, and the feeding component is used to drive the steel bar to be rusted to feed into the rust removal cylinder. The present application can realize the operation of automatic rust removal of steel bars, greatly reducing the steps of manual operation, which not only reduces the labor intensity of workers, but also can improve the work efficiency during rust removal operation.

[0004] In this technical solution, a wire brush is fixed inside the rust removal spring. When the steel bar moves along the central axis of the rust removal spring, the wire brush rubs against the steel bar to remove rust from the steel bar. However, after long-term use, the wire brush will bend, deform, break, etc., so that the wire brush no longer fits tightly to the surface of the steel bar and it is difficult to provide strong friction. Since the surface of the rust removal spring is an arc-shaped surface, it is troublesome to replace and install the wire brush, which takes a lot of time during the maintenance process. Further improvements can be made. Summary of the invention

[0005] 1. Technical issues to be resolved

[0006] In view of the shortcomings of the prior art, the present invention provides a rust removal device for steel bars in bridge construction, which has the advantages of stable and adjustable friction force on the steel bars and easy maintenance, and solves the problem that the deformation of the wire brush makes it difficult to ensure the friction force on the steel bars and is inconvenient for maintenance.

[0007] (II) Technical solution

[0008] In order to achieve the above-mentioned purpose of making the friction force on the steel bars stable and adjustable and easy to maintain, the present invention provides the following technical solutions: a rust removal device for steel bars in bridge construction, comprising a frame, a mounting plate 1 is fixedly installed on the top of the left and right ends of the frame, a feeding assembly is provided on each of the mounting plates 1, a mounting plate 2 is welded to the middle of the frame, a gantry is fixedly installed on the top of the mounting plate 2, a U-shaped plate is slidably connected inside the gantry, a support assembly is provided on the side of the U-shaped plate, a grinding belt is provided on the surface of the support assembly, and a cleaning assembly is provided on the top of the mounting plate 2.

[0009] Preferably, the feeding components include a clamping wheel 1 and a clamping wheel 2, and the clamping wheel 1 and the clamping wheel 2 are both rotatably connected to the mounting plate 1, and the clamping wheel 1 and the clamping wheel 2 are respectively clamped at the front and rear sides of the steel bar; a gear 1 is coaxially fixed to the bottom of the clamping wheel 1, and a gear 2 is coaxially fixed to the bottom of the clamping wheel 2, the gear 1 and the gear 2 are located below the mounting plate 1, and the two are meshed with each other, and a rotating driving member is arranged at the bottom of the gear 1 and the gear 2; guide tubes are fixedly installed on opposite sides of the two mounting plates, and the steel bar passes through the inside of the guide tubes.

[0010] Preferably, the rotating driving member includes two sprockets, and the two sprockets are respectively fixedly installed at the bottom center of the two gears 2, and the two sprockets are connected by a chain; a motor 1 is fixedly installed at the bottom center of the gear 1 on the right side.

[0011] Preferably, the cross-sections of the clamping wheel one and the clamping wheel two are both in the shape of an "I", the middle parts of the clamping wheel one and the middle parts of the clamping wheel two are clamped on the steel bar, the middle part circumferential surface of the clamping wheel one is arrayed with spiral ridges one, the middle part circumferential surface of the clamping wheel two is arrayed with spiral ridges two, the spiral directions of the spiral ridges one and the spiral ridges two are opposite, and the spiral ridges one and the spiral ridges two are in contact with the surface of the steel bar.

[0012] Preferably, two guide grooves are provided through the front and rear sides of the gantry, and the guide grooves are arranged along the vertical direction; sliding columns are fixedly installed on the front and rear sides of the U-shaped plate, and the sliding columns are slidably connected in the guide grooves, and a fixing plate is fixedly installed on the middle part of the upper surface of the U-shaped plate, and a cylinder is fixedly installed at the center of the top of the gantry, and the output end of the cylinder passes through the gantry, and the output end of the cylinder is fixedly installed on the top of the fixing plate.

[0013] Preferably, the supporting assembly includes two cranks rotatably connected to the left side of the U-shaped plate, the top ends of the two cranks are fixedly mounted with rotating arms, the front sides of the bottom ends of the cranks are rotatably connected with lower rotating rollers, a second motor is fixedly mounted in the middle of the left side of the U-shaped plate, the output end of the second motor passes through the U-shaped plate, an upper rotating roller is fixedly mounted on the output end of the second motor, the upper rotating roller and the two lower rotating rollers are distributed in an isosceles triangle, the grinding belt is sleeved on the outside of the upper rotating roller and the two lower rotating rollers; an elastic tension member is arranged between the top ends of the two rotating arms.

[0014] Preferably, the elastic tension member includes a two-way threaded rod rotatably connected to the left side of the fixed plate, the middle part of the two-way threaded rod is rotatably connected to the fixed plate, the thread directions of the front half and the rear half of the two-way threaded rod are opposite, and two guide rods are fixedly installed on the left side of the U-shaped plate, each of the guide rods is slidably connected with a sliding plate, a threaded hole is provided on the top of the sliding plate, and the two sliding plates are respectively threadedly connected to the front half and the rear half of the two-way threaded rod; a tension spring is fixedly installed on the opposite side of the bottom ends of the two sliding plates, and a connecting plate is fixedly installed on the other end of the tension spring, and the other end of the connecting plate is rotatably connected to the top of the rotating arm.

[0015] Preferably, the cleaning assembly includes a V-shaped plate arranged directly below the middle of the grinding sand belt, the V-shaped plate being arranged along the left and right directions, a dust exhaust pipe being connected to the center of the bottom of the V-shaped plate, and the dust exhaust pipe being penetrated and slidably connected to the second mounting plate; an L-shaped plate is fixedly installed in the middle of the front and rear sides of the V-shaped plate, the two L-shaped plates are respectively fitted on the inner side of the vertical part of the gantry, and bristles are fixedly installed on the top of the two L-shaped plates, and the bristles are fitted to the bottom of the grinding sand belt; two vertical rods are fixedly installed on the top of the second mounting plate, the two vertical rods respectively penetrate the two L-shaped plates, the L-shaped plate is slidably connected to the vertical rods, and a spring is sleeved on the outer side of the vertical rod, and the two ends of the spring are respectively fixedly installed on the bottom of the L-shaped plate and the top of the second mounting plate.

[0016] (III) Beneficial effects

[0017] Compared with the prior art, the present invention provides a rust removal device for steel bars in bridge construction, which has the following beneficial effects:

[0018] 1. The rust removal device for the steel bars of the bridge construction drives two sets of sliding plates to move toward each other by rotating the bidirectional threaded rod, pulls the tension spring, and increases the tension of the connecting plate on the rotating arm. Therefore, when the steel bars are squeezed on the surface of the grinding belt, a greater force is required to drive the grinding belt to deform, thereby increasing the squeezing force of the grinding belt on the steel bars. In addition, the squeezing force of the grinding belt and the steel bars can also be adjusted by the telescopic length of the output end of the cylinder, thereby achieving the purpose of stable and adjustable friction force on the steel bars.

[0019] 2. When the rust removal device for the steel bars of the bridge construction is being repaired, the two sliding plates can be moved in opposite directions by rotating the bidirectional threaded rod, thereby reducing the pulling force of the connecting plate on the rotating arm; and then the bottom ends of the two cranks can be manually pushed closer to each other, so that the grinding belt can be removed from the upper roller and the lower roller, thereby achieving the purpose of facilitating maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A schematic diagram of the three-dimensional structure of a rust removal device for bridge construction steel bars proposed by the present invention;

[0021] Figure 2 This is a schematic structural diagram of a feeding assembly of a rust removal device for bridge construction steel bars proposed by the present invention;

[0022] Figure 3 A schematic diagram of the three-dimensional structure of a clamping wheel 1 and a clamping wheel 2 of a rust removal device for steel bars in bridge construction proposed by the present invention;

[0023] Figure 4 A schematic diagram of the three-dimensional structure of a gantry and a U-shaped plate of a rust removal device for steel bars in bridge construction proposed by the present invention;

[0024] Figure 5 A schematic diagram of the three-dimensional structure of a support assembly of a rust removal device for steel bars in bridge construction proposed by the present invention;

[0025] Figure 6 A schematic diagram of the three-dimensional structure of an elastic tension member of a rust removal device for steel bars in bridge construction proposed by the present invention;

[0026] Figure 7 This is a schematic diagram of the three-dimensional structure of a cleaning component of a rust removal device for steel bars in bridge construction proposed by the present invention.

[0027] In the figure: 100, frame; 200, mounting plate 1; 300, feeding assembly; 400, mounting plate 2; 500, gantry; 600, U-shaped plate; 700, support assembly; 800, grinding belt; 900, cleaning assembly; 301, clamping wheel 1; 302, clamping wheel 2; 303, gear 1; 304, gear 2; 305, guide tube; 306, motor 1; 307, sprocket; 308, chain; 309, spiral convex strip 1; 310, spiral convex strip 2; 50 1. Guide groove; 601. Sliding column; 602. Fixed plate; 603. Cylinder; 701. Crank; 702. Rotating arm; 703. Lower roller; 704. Motor 2; 705. Upper roller; 706. Elastic tension member; 7061. Bidirectional threaded rod; 7062. Guide rod; 7063. Sliding sheet; 7064. Tension spring; 7065. Connecting plate; 901. V-shaped plate; 902. Dust exhaust pipe; 903. L-shaped plate; 904. Brush; 905. Vertical rod; 906. Spring. DETAILED DESCRIPTION

[0028] In the description of the present application, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0029] 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.

[0030] See also Figure 1 A rust removal device for steel bars in bridge construction includes a frame 100, a mounting plate 200 is fixedly installed on the top of the left and right ends of the frame 100, a feeding assembly 300 is arranged on each mounting plate 200, a mounting plate 400 is welded to the middle of the frame 100, a gantry 500 is fixedly installed on the top of the mounting plate 400, a U-shaped plate 600 is slidably connected inside the gantry 500, a supporting assembly 700 is arranged on the side of the U-shaped plate 600, a grinding belt 800 is sleeved on the surface of the supporting assembly 700, and a cleaning assembly 900 is arranged on the top of the mounting plate 400.

[0031] See also Figure 2-Figure 3 The feeding assembly 300 includes a clamping wheel 1 301 and a clamping wheel 2 302. The clamping wheel 1 301 and the clamping wheel 2 302 are both rotatably connected to the mounting plate 1 200. The clamping wheel 1 301 and the clamping wheel 2 302 are clamped at the front and rear sides of the steel bar respectively. A gear 1 303 is coaxially fixed to the bottom of the clamping wheel 1 301, and a gear 2 304 is coaxially fixed to the bottom of the clamping wheel 2 302. The gear 1 303 and the gear 2 304 are located below the mounting plate 1 200, and the two are meshed with each other, so that the rotation directions of the gear 1 303 and the gear 2 304 are opposite, and the clamping wheel 1 301 and the clamping wheel 2 302 are opposite, and the steel bar is pushed from right to left. A rotating driving member is arranged at the bottom of the gear 1 303 and the gear 2 304. A guide tube 305 is fixedly installed on the opposite side of the two mounting plates 1 200, and the steel bar passes through the inside of the guide tube 305. The reinforcing bar is supported and guided by the guide pipe 305. In addition, the right end of the guide pipe 305 is provided with a bell mouth, which is convenient for the reinforcing bar to be inserted into the inside of the guide pipe 305.

[0032] See also Figure 2 The rotating driving member includes two sprockets 307, which are respectively fixedly mounted at the bottom center of the two gears 2 304, and the two sprockets 307 are connected by a chain 308; a motor 1 306 is fixedly mounted at the bottom center of the right gear 1 303. Thus, when the right gear 1 303 is driven to rotate by the motor 1 306, the right gear 2 304 is driven to rotate; and through the transmission effect of the sprocket 307 and the chain 308, the left gear 2 304 is driven to rotate, and then the left gear 1 303 is driven to rotate.

[0033] See also Figure 3 The cross-sections of the clamping wheel 1 301 and the clamping wheel 2 302 are both in the shape of an "I". The middle part of the clamping wheel 1 301 and the middle part of the clamping wheel 2 302 clamp on the steel bar, and the upper and lower parts of the clamping wheel 1 301 and the clamping wheel 2 302 block the steel bar to prevent the steel bar from being displaced in the vertical direction. The spiral ridge 1 309 is arranged in an array on the circumferential surface of the middle part of the clamping wheel 1 301, and the spiral ridge 2 310 is arranged in an array on the circumferential surface of the middle part of the clamping wheel 2 302. The spiral directions of the spiral ridge 1 309 and the spiral ridge 2 310 are opposite, and the spiral ridge 1 309 and the spiral ridge 2 310 are attached to the surface of the steel bar. Therefore, when the clamping wheel 1 301 and the clamping wheel 2 302 rotate, the spiral ridge 1 309 and the spiral ridge 2 310 exert an oblique thrust on the steel bar, so that the steel bar moves from right to left while rotating. Ensure that the steel bar can be in contact with the grinding belt 800 on all sides to ensure the rust removal effect.

[0034] See also Figure 4 , the front and rear sides of the gantry 500 are penetrated with two guide grooves 501, and the guide grooves 501 are arranged along the vertical direction; the front and rear sides of the U-shaped plate 600 are fixedly installed with sliding columns 601, and the sliding columns 601 are slidably connected in the guide grooves 501. A fixed plate 602 is fixedly installed in the middle of the upper surface of the U-shaped plate 600, and a cylinder 603 is fixedly installed at the center of the top of the gantry 500. The output end of the cylinder 603 penetrates the gantry 500, and the output end of the cylinder 603 is fixedly installed on the top of the fixed plate 602. The fixed plate 602 and the U-shaped plate 600 are driven to move up and down by the extension and contraction of the output end of the cylinder 603, and the sliding column 601 cooperates with the guide groove 501 to guide the moving path of the U-shaped plate 600.

[0035] See also Figure 5The support assembly 700 includes two cranks 701 rotatably connected to the left side of the U-shaped plate 600. Two pins are fixed on the left side of the U-shaped plate 600. The tops of the two cranks 701 are rotatably connected to the two pins. The tops of the two cranks 701 are fixedly installed with rotating arms 702. The front sides of the bottom ends of the cranks 701 are rotatably connected with lower rotating rollers 703. A second motor 704 is fixedly installed in the middle of the left side of the U-shaped plate 600. The output end of the second motor 704 passes through the U-shaped plate 600. The output end of the second motor 704 is fixedly installed with an upper rotating roller 705. The diameter of the upper rotating roller 705 is larger than the diameter of the lower rotating roller 703. The upper rotating roller 705 and the two lower rotating rollers 703 are distributed in an isosceles triangle. The grinding belt 800 is sleeved on the outer sides of the upper rotating roller 705 and the two lower rotating rollers 703. An elastic tension member 706 is arranged between the tops of the two rotating arms 702. The tension of the elastic tension piece 706 causes the top ends of the two rotating arms 702 to move closer to each other, thereby causing the bottom ends of the two cranks 701 to move away from each other. The tension of the elastic tension piece 706 causes the two lower rotating rollers 703 to move away from each other, while the position of the upper rotating roller 705 remains unchanged, thereby keeping the sanding belt 800 taut.

[0036] See also Figure 5-Figure 6 The elastic tension member 706 includes a bidirectional threaded rod 7061 rotatably connected to the left side of the fixed plate 602, the middle part of the bidirectional threaded rod 7061 is rotatably connected to the fixed plate 602, the thread directions of the front half and the rear half of the bidirectional threaded rod 7061 are opposite, and two guide rods 7062 are fixedly installed on the left side of the U-shaped plate 600, each guide rod 7062 is slidably connected to a sliding sheet 7063, a threaded hole is provided on the top of the sliding sheet 7063, and the two sliding sheets 7063 are respectively threadedly connected to the front half and the rear half of the bidirectional threaded rod 7061. Therefore, when the bidirectional threaded rod 7061 is rotated, the two sliding sheets 7063 are driven to move closer to or away from each other.

[0037] Tension springs 7064 are fixedly installed on the opposite sides of the bottom ends of the two sliding sheets 7063, and a connecting plate 7065 is fixedly installed on the other end of the tension spring 7064. The other end of the connecting plate 7065 is rotatably connected to the top of the rotating arm 702. When the two sliding sheets 7063 move away from each other, the tension spring 7064 will be stretched, so that the tension of the tension spring 7064 on the rotating arm 702 will also increase.

[0038] See also Figure 7 The cleaning assembly 900 includes a V-shaped plate 901 disposed just below the middle of the grinding belt 800. The V-shaped plate 901 is disposed in the left-right direction. A dust exhaust pipe 902 is connected to the center of the bottom of the V-shaped plate 901. The dust exhaust pipe 902 penetrates and is slidably connected to the mounting plate 400. A suction pump is connected to the other end of the dust exhaust pipe 902. Rust powder from grinding the steel bar is contained in the V-shaped plate 901, and then the rust powder inside the V-shaped plate 901 is extracted through the dust exhaust pipe 902.

[0039] L-shaped plates 903 are fixedly installed in the middle of the front and rear sides of the V-shaped plate 901, and the two L-shaped plates 903 are respectively attached to the inner sides of the vertical parts of the gantry 500. Brushes 904 are fixedly installed on the tops of the two L-shaped plates 903, and the brushes 904 are attached to the bottom of the grinding belt 800. During the grinding process of the steel bars, some rust powder will adhere to the surface of the grinding belt 800, so the rust powder on the surface of the grinding belt 800 is scraped off by the friction of the brushes 904 on the surface of the grinding belt 800.

[0040] Two vertical rods 905 are fixedly installed on the top of the second mounting plate 400. The two vertical rods 905 penetrate the two L-shaped plates 903 respectively. The L-shaped plates 903 are slidably connected to the vertical rods 905. Springs 906 are sleeved on the outer sides of the vertical rods 905. The two ends of the springs 906 are fixedly installed on the bottom of the L-shaped plates 903 and the top of the second mounting plate 400. The elasticity of the springs 906 makes the bristles 904 cling to the surface of the sanding belt 800.

[0041] When in use, the motor 1 306 drives the gear 1 303 to rotate, and the meshing action of the gear 1 303 and the gear 2 304 drives the clamping wheel 1 301 and the clamping wheel 2 302 to rotate in opposite directions, so that the steel bar is inserted from the middle between the clamping wheel 1 301 and the clamping wheel 2 302, so that the clamping wheel 1 301 and the clamping wheel 2 302 push the steel bar to move from right to left;

[0042] When the steel bar moves to the bottom of the grinding belt 800, the output end of the cylinder 603 is extended, driving the fixed plate 602 and the U-shaped plate 600 to move downward, so that the grinding belt 800 is closely attached to the surface of the steel bar; the steel bar squeezes the grinding belt 800, driving the two cranks 701 to deflect toward each other, thereby ensuring the contact area between the steel bar and the grinding belt 800;

[0043] Then, the upper rotating roller 705 is driven to rotate by the second motor 704, driving the grinding belt 800 to move and grind the rust on the surface of the steel bar; at the same time, the grinding belt 800 rubs against the bristles 904, and the bristles 904 scrape off the rust powder attached to the surface of the grinding belt 800; at the same time, the air pump sucks the rust powder inside the V-shaped plate 901 through the dust exhaust pipe 902 to transfer the rust powder.

[0044] By rotating the bidirectional threaded rod 7061, the two sets of sliding plates 7063 are driven to move toward each other, pulling the tension spring 7064, thereby increasing the pulling force of the connecting plate 7065 on the rotating arm 702. Therefore, when the steel bar is squeezed on the surface of the grinding belt 800, a greater force is required to drive the grinding belt 800 to deform, thereby increasing the squeezing force of the grinding belt 800 on the steel bar.

[0045] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A rust removal device for steel bars in bridge construction, comprising a frame (100), characterized in that: The left and right ends of the frame (100) are both fixedly mounted with mounting plates (200), each mounting plate (200) is provided with a feeding assembly (300), a mounting plate (400) is welded to the middle of the frame (100), a gantry (500) is fixedly mounted on the top of the mounting plate (400), a U-shaped plate (600) is slidably connected inside the gantry (500), a supporting assembly (700) is provided on the side of the U-shaped plate (600), a grinding belt (800) is sleeved on the surface of the supporting assembly (700), and a cleaning assembly (900) is provided on the top of the mounting plate (400).

2. The rust removal device for bridge construction steel bars according to claim 1 is characterized in that: Each of the feeding assemblies (300) comprises a clamping wheel 1 (301) and a clamping wheel 2 (302), wherein the clamping wheel 1 (301) and the clamping wheel 2 (302) are both rotatably connected to the mounting plate 1 (200), and the clamping wheel 1 (301) and the clamping wheel 2 (302) are clamped at the front and rear sides of the steel bar respectively; A gear 1 (303) is coaxially fixed to the bottom of the clamping wheel 1 (301), and a gear 2 (304) is coaxially fixed to the bottom of the clamping wheel 2 (302). The gear 1 (303) and the gear 2 (304) are located below the mounting plate 1 (200) and are meshed with each other. A rotating driving member is provided at the bottom of the gear 1 (303) and the gear 2 (304); A guide tube (305) is fixedly mounted on one opposite side of the two mounting plates (200), and a steel bar passes through the inside of the guide tube (305).

3. The rust removal device for bridge construction steel bars according to claim 2 is characterized in that: The rotating driving member comprises two sprocket wheels (307), the two sprocket wheels (307) are respectively fixedly mounted at the bottom center of the two gear wheels (304), and the two sprocket wheels (307) are connected by a chain (308); A motor 1 (306) is fixedly mounted at the bottom center of the gear 1 (303) on the right side.

4. The rust removal device for bridge construction steel bars according to claim 2, characterized in that: The cross-sections of the clamping wheel 1 (301) and the clamping wheel 2 (302) are both in the shape of an "I" character. The middle parts of the clamping wheel 1 (301) and the middle parts of the clamping wheel 2 (302) are clamped on the steel bar. The middle circumferential surface of the clamping wheel 1 (301) is arrayed with spiral ridges 1 (309), and the middle circumferential surface of the clamping wheel 2 (302) is arrayed with spiral ridges 2 (310). The spiral directions of the spiral ridges 1 (309) and the spiral ridges 2 (310) are opposite. The spiral ridges 1 (309) and the spiral ridges 2 (310) are attached to the surface of the steel bar.

5. The rust removal device for bridge construction steel bars according to claim 1, characterized in that: Two guide grooves (501) are provided through the front and rear sides of the gantry (500), and the guide grooves (501) are arranged along the vertical direction; The front and rear sides of the U-shaped plate (600) are both fixedly mounted with sliding columns (601), the sliding columns (601) are slidably connected in the guide groove (501), a fixing plate (602) is fixedly mounted in the middle of the upper surface of the U-shaped plate (600), a cylinder (603) is fixedly mounted at the center of the top of the gantry (500), an output end of the cylinder (603) passes through the gantry (500), and the output end of the cylinder (603) is fixedly mounted on the top of the fixing plate (602).

6. The rust removal device for steel bars in bridge construction according to claim 1, characterized in that: The support assembly (700) comprises two cranks (701) rotatably connected to the left side of the U-shaped plate (600), the top ends of the two cranks (701) are fixedly mounted with a rotating arm (702), the front sides of the bottom ends of the cranks (701) are rotatably connected with a lower rotating roller (703), a second motor (704) is fixedly mounted in the middle of the left side of the U-shaped plate (600), the output end of the second motor (704) passes through the U-shaped plate (600), an upper rotating roller (705) is fixedly mounted at the output end of the second motor (704), the upper rotating roller (705) and the two lower rotating rollers (703) are distributed in the form of an isosceles triangle, and the grinding belt (800) is sleeved on the outer sides of the upper rotating roller (705) and the two lower rotating rollers (703); An elastic tension member (706) is arranged between the top ends of the two rotating arms (702).

7. The rust removal device for bridge construction steel bars according to claim 6, characterized in that: The elastic tension member (706) comprises a bidirectional threaded rod (7061) rotatably connected to the left side of the fixed plate (602); the middle part of the bidirectional threaded rod (7061) is rotatably connected to the fixed plate (602); the threads of the front half and the rear half of the bidirectional threaded rod (7061) are in opposite directions; two guide rods (7062) are fixedly installed on the left side of the U-shaped plate (600); each of the guide rods (7062) is slidably connected to a sliding sheet (7063); a threaded hole is provided on the top of the sliding sheet (7063); and the two sliding sheets (7063) are respectively threadedly connected to the front half and the rear half of the bidirectional threaded rod (7061); A tension spring (7064) is fixedly installed on the opposite side of the bottom ends of the two sliding sheets (7063), and a connecting plate (7065) is fixedly installed on the other end of the tension spring (7064), and the other end of the connecting plate (7065) is rotatably connected to the top end of the rotating arm (702).

8. The rust removal device for bridge construction steel bars according to claim 1, characterized in that: The cleaning assembly (900) comprises a V-shaped plate (901) arranged directly below the middle of the sanding belt (800), the V-shaped plate (901) being arranged along the left-right direction, a dust exhaust pipe (902) being connected to the center of the bottom of the V-shaped plate (901), and the dust exhaust pipe (902) being slidably connected to the second mounting plate (400); An L-shaped plate (903) is fixedly installed in the middle of the front and rear sides of the V-shaped plate (901), and the two L-shaped plates (903) are respectively attached to the inner sides of the vertical parts of the gantry (500), and bristles (904) are fixedly installed on the tops of the two L-shaped plates (903), and the bristles (904) are attached to the bottom of the grinding belt (800); Two vertical rods (905) are fixedly installed on the top of the second mounting plate (400), and the two vertical rods (905) respectively penetrate the two L-shaped plates (903). The L-shaped plates (903) are slidably connected to the vertical rods (905). A spring (906) is sleeved on the outer side of the vertical rod (905), and the two ends of the spring (906) are respectively fixedly installed on the bottom of the L-shaped plate (903) and the top of the second mounting plate (400).

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