Rust removal device for construction steel bars

Abstract

The invention relates to the technical field of steel bar rust removal, and particularly discloses a building steel bar rust removal device which comprises a rack and a mounting disc rotationally mounted on the rack, a through hole allowing a steel bar to penetrate is formed in the center of the mounting disc in a penetrating mode, and two sets of grinding belts used for grinding the steel bar are arranged on the mounting disc; the two sets of grinding belts are symmetrically arranged around the center of the through hole and are arranged at intervals in the conveying direction of the reinforcing steel bars, two sets of spraying pipes are arranged on the mounting disc, the two sets of spraying pipes correspond to the two sets of grinding belts one to one, and the sides, close to the reinforcing steel bars, of the spraying pipes and the sides, close to the reinforcing steel bars, of the grinding belts are arranged at intervals; the spraying pipe is provided with a spraying opening used for spraying and dedusting, the rack is provided with a water supply assembly, and the water supply assembly is communicated with the spraying pipe and used for supplying water to the spraying pipe. The rust removal device for the construction steel bars has the effect of reducing flying of dust during grinding.

Description

Technical Field

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

[0002] Rebar is a commonly used metal material in the construction field. The surface of the rebar will rust if it is exposed to the natural environment for a long time. Before the construction of the rebar, in order to ensure the wear resistance and corrosion resistance of the rebar, increase the service life of the rebar, and restore the bonding effect between the rebar and the concrete during pouring, the surface of the rebar needs to be rust-proofed before construction, and the rust is generally removed by grinding.

[0003] The patent application document with the publication number CN118559583A discloses a steel bar rust removal device for construction, including a base plate, a grinding assembly, a first drive assembly, a traction assembly and a second drive assembly, wherein the first drive assembly, the traction assembly and the second drive assembly are mounted on the upper portion of the base plate, the traction assembly is used to drive the steel bar to move horizontally, the grinding assembly is arranged on one side of the traction assembly and is attached to the side wall of the steel bar, the first drive assembly is used to drive the grinding assembly to revolve around the steel bar, and when the grinding assembly revolves, the second drive assembly is used to drive the grinding assembly to rotate. The traction assembly drives the steel bar to move through the grinding assembly, and the grinding assembly rotates around the steel bar to grind the steel bar.

[0004] However, this solution still has the following problems: dust will be generated during the grinding and rust removal of steel bars, and dust will fly during the grinding process. Moreover, since the steel bars are made of metal, the generated dust contains a large amount of metal particles. If there are no proper protective measures, it will seriously endanger the health of the operators. Summary of the invention

[0005] The invention provides a rust removal device for building steel bars, aiming to solve the problem of dust flying during grinding in the related art.

[0006] The rust removal device for construction steel bars of the present invention comprises a frame and a mounting plate rotatably mounted on the frame, a through hole for the steel bars to pass through is penetrated at the center of the mounting plate, two groups of grinding belts for grinding the steel bars are arranged on the mounting plate, the two groups of grinding belts are symmetrically arranged around the center of the through hole, the two groups of grinding belts are arranged at intervals around the conveying direction of the steel bars, two groups of spray pipes are arranged on the mounting plate, the two groups of spray pipes are arranged in a one-to-one correspondence with the two groups of grinding belts, the spray pipes and the grinding belts are arranged at intervals on a side close to the steel bars, a spray port for spraying dust is opened on the spray pipe, and a water supply component is arranged on the frame, and the water supply component is connected to the spray pipe for supplying water to the spray pipe.

[0007] The effect is that the installation disk drives the grinding belt to rotate to grind the steel bars. The two sets of grinding belts are staggered along the direction of the steel bars. During grinding, the water supply component supplies water to the spray pipe, and finally sprays water to the grinding location through the spray port. At the same time, the spray pipe rotates with the installation disk, so that the spray port can always correspond to the grinding location, so as to spray the grinding location at all times and reduce the phenomenon of dust flying during grinding.

[0008] Preferably, every two of the spray pipes are arranged as a group, the two groups of spray pipes are arranged in parallel and spaced apart, the two spray pipes in each group are arranged spaced apart, and the spray ports are arranged toward the abutment between the steel bar and the grinding belt.

[0009] The effect is that each group of two spray pipes is arranged as a group, and the spray port is arranged in the direction of the grinding belt, so that the angle and area of ​​the spray can fully cover the grinding area, thereby improving the spray effect on the grinding area.

[0010] Preferably, the water supply assembly includes a water pump, a water pipe, a matching sleeve 1 and a matching sleeve 2, the matching sleeve 1 and the matching sleeve 2 are rotatably sealed to form an annular channel between the matching sleeve 1 and the matching sleeve 2, the matching sleeve 1 is connected to the mounting disk, the matching sleeve 1 is coaxially arranged with the through hole, the end of the spray pipe passes through the mounting disk and the matching sleeve 1 in sequence to communicate with the annular channel, one end of the water pipe is connected to the matching sleeve 2, and the other end is connected to a water source, the water pump is arranged on the water pipe, and the water pump is used to transport water to the spray pipe for spraying.

[0011] The effect is that the water pump transports water to the annular channel through the water pipe, and then the water enters the spray pipe through the annular channel, and finally sprays out through the spray port to spray the polished area.

[0012] Preferably, a plurality of nozzles are arranged on the frame, the nozzles are connected to a water pipe, the nozzles and the grinding belt are arranged at intervals, and a plurality of nozzles are arranged around the grinding belt.

[0013] The effect is that multiple nozzles are provided to assist in spraying the grinding belt during grinding. While the grinding belt is being grinded, a water curtain can be formed around the grinding belt to prevent the diffusion of dust, thereby further improving the dust removal effect.

[0014] Preferably, a support rod is provided on the mounting plate, and two support rods are provided corresponding to the two groups of grinding belts. The support rod is provided on a side of the grinding belt close to the steel bar, and the support rod abuts against the steel bar to support the steel bar.

[0015] The effect is that the support rod and the steel bar are in contact, and when the grinding belt rotates around the steel bar to grind the steel bar, the shaking of the steel bar is reduced, so that the spray port can accurately spray the grinding area. At the same time, the steel bar is stable during grinding, thereby improving the grinding effect of the steel bar.

[0016] Preferably, the two groups of support rods have the same length, and the support rods abut against a side of the other group of grinding belts that is away from the steel bars.

[0017] The effect is that the two support rods are set to have the same length, so that the support rods can abut against the inner side of another grinding belt while supporting the steel bars, so that the grinding belt can stably fit the steel bars when grinding the steel bars, further improving the grinding effect on the steel bars.

[0018] Preferably, the two groups of support rods and steel bars are arranged in the same plane, and the support rods correspond to the middle positions of two adjacent spray pipes in each group.

[0019] The effect is that when the steel bar is being ground, the grinding area is clamped and supported between two support rods, reducing the shaking of the grinding area and making the grinding area on the same straight line, which is convenient for spraying and improves the grinding effect.

[0020] Preferably, an installation groove is provided in the installation disk, a slide groove is provided on the installation disk, a control component is arranged in the installation groove, the support rod and the driving roller are connected to the control component through the slide groove, and the control component is used to drive the grinding belt and the support rod to cooperate with the steel bar.

[0021] The effect is that before grinding, the steel bar is placed in a specified position, and then the position of the driving roller and the support rod is adjusted by the control component so that the grinding belt and the support rod cooperate with the steel bar respectively, so as to carry out subsequent grinding or replace the grinding belt.

[0022] Preferably, the control assembly includes a control frame, a control gear and a driving member, the control frame is slidably arranged in the mounting groove along the direction toward the axis of the mounting disk, the support rod and the driving roller are both connected to the control frame, a control rack is arranged on the control frame, the driving member is arranged in the mounting groove, the control gear is arranged at the output end of the driving member, and the control gear is meshed with the control rack.

[0023] The effect is that the driving member drives the control gear to rotate, the control gear rotation drives the control frame to move through the control rack, the control frame movement drives the support rod and the driving roller to move, and then the position of the grinding belt is adjusted.

[0024] Preferably, a slider is provided at one end of the support rod close to the control frame, and the slider is slidably arranged on the control frame in a direction toward the through hole. An elastic member is provided on the side of the slider away from the steel bar, and the elastic member is connected to the control frame to drive the slider to slide in a direction toward the steel bar. A push rod is provided on the side of the slider close to the steel bar, and the slider stops moving when the push rod abuts against the inner wall of the mounting groove.

[0025] The effect is that after the support rod moves to abut against the steel bar, the push rod abuts against the inner wall of the installation groove, and at the same time the grinding belt abuts against the steel bar, the control frame continues to move, the slider stops moving and compresses the elastic part, and then the driving roller drives the grinding belt to continue moving, increasing the pressure between the grinding belt and the steel bar. At the same time, the grinding belt undergoes a certain deformation around the steel bar, thereby increasing the contact area with the steel bar and improving the grinding effect on the steel bar.

[0026] Beneficial effects: When the mounting plate rotates to drive the grinding belt to rotate and grind the steel bar, the spray pipe rotates with the mounting plate, so that during grinding, the spray port on the spray pipe always corresponds to the grinding position of the grinding belt and the steel bar, and sprays the grinding position. At the same time, with the assistance of the spray head, the area around the grinding belt is sprayed, thereby reducing the flying phenomenon of dust generated during grinding. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is an overall structural view of the present invention.

[0028] Figure 2 It is a structural view of the mounting plate in the present invention.

[0029] Figure 3 It is a structural view showing the positional relationship of two groups of grinding belts in the present invention.

[0030] Figure 4 It is a structural view of the grinding belt in the present invention.

[0031] Figure 5 It is a partial exploded schematic diagram of the matching sleeve 2 and the matching sleeve 1 in the present invention.

[0032] Figure 6 It is a structural view of the spray pipe in the present invention.

[0033] Figure 7 It is a structural view of the control component in the present invention.

[0034] Figure 8 yes Figure 7 Magnified view at A in the middle.

[0035] Reference numerals: 01. Steel bar; 1. Frame; 2. Mounting plate; 21. Through hole; 22. Driving roller; 23. Mounting groove; 24. Slide groove; 3. Grinding belt; 4. Spray pipe; 41. Spray port; 5. Water supply assembly; 51. Water pump; 52. Water pipe; 53. Matching sleeve one; 54. Matching sleeve two; 541. Annular channel; 6. Spray head; 7. Support rod; 8. Control assembly; 81. Control frame; 811. Control rack; 82. Control gear; 83. Driving member; 9. Sliding block; 91. Elastic member; 92. Push rod. DETAILED DESCRIPTION

[0036] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0037] like Figures 1 to 8 As shown, the rust removal device for construction steel bars of the present invention comprises a frame 1 and a mounting plate 2 rotatably mounted on the frame 1. A through hole 21 for the steel bar 01 to pass through is provided at the center of the mounting plate 2. Two groups of grinding belts 3 are provided on the mounting plate 2. The two groups of grinding belts 3 are symmetrically arranged around the center of the through hole 21. In this embodiment, the grinding belts 3 are sand belts. A driving roller 22 is rotatably arranged on the mounting plate 2. The grinding belt 3 is sleeved on the outside of the driving roller 22, that is, the driving roller 22 can drive the grinding belt 3 to rotate. When grinding the steel bar 01, the steel bar 01 is transported in the through hole 21, and the mounting plate 2 and the driving roller 22 rotate at the same time, so that the grinding belt 3 revolves around the steel bar 01 while rotating, and the steel bar 01 is ground in all directions.

[0038] Reference Figure 2 and Figure 3 There are two groups of driving rollers 22, and the two groups of driving rollers 22 are arranged in one-to-one correspondence with the two groups of grinding belts 3. Every multiple driving rollers 22 are arranged as a group. In this embodiment, every three driving rollers 22 are arranged as a group. The grinding belt 3 is sleeved on the outside of the driving roller 22, and the side of the grinding belt 3 facing away from the driving roller 22 is in contact with the steel bar 01, that is, the side of the grinding belt 3 in contact with the steel bar 01 is the grinding surface.

[0039] Reference Figures 1 to 5 , two groups of grinding belts 3 are arranged at intervals along the conveying direction of the steel bar 01, that is, the two groups of grinding belts 3 are arranged in a staggered manner along the axis of the mounting plate 2. Two groups of spray pipes 4 are arranged on the mounting plate 2 corresponding to the two groups of grinding belts 3, respectively. The spray pipe 4 is arranged on the side of the grinding belt 3 close to the driving roller 22, and the steel bar 01 is conveyed between the spray pipe 4 and the grinding belt 3. A spray port 41 is provided on the side of the spray pipe 4, and a water supply component 5 is provided on the frame 1. The water supply component 5 is connected to the spray pipe 4 to supply water to the spray pipe 4. When grinding, the mounting plate 2 rotates and drives the spray pipe 4 to rotate at the same time, that is, when grinding, the spray port 41 of the spray pipe 4 always keeps corresponding to the grinding position. At this time, the water supply component 5 supplies water to the spray pipe 4, and then sprays it to the steel bar 01 through the spray port 41, and sprays water to cover the grinding position, thereby reducing the phenomenon of dust flying during the polishing process. At the same time, spraying during grinding can prevent the grinding surface of the sanding belt from being too hot and improve the grinding effect.

[0040] Reference Figures 1 to 5The water supply assembly 5 includes a water pump 51, a water pipe 52, a matching sleeve 1 53 and a matching sleeve 2 54. The matching sleeve 1 53 and the matching sleeve 2 54 are arranged on the side of the mounting plate 2 away from the grinding belt 3. The matching sleeve 1 53 and the matching sleeve 2 54 are both annular. The matching sleeve 1 53 and the matching sleeve 2 54 are coaxially arranged with the mounting plate 2, that is, the matching sleeve 1 53 and the matching sleeve 2 54 are sleeved on the outside of the through hole 21. The matching sleeve 1 53 is connected to the mounting plate 2. The matching sleeve 2 54 and the matching sleeve 1 53 are rotatably sealed and matched. An annular channel 541 is formed between the matching sleeve 1 53 and the matching sleeve 2 54. One end of the spray pipe 4 close to the mounting plate 2 passes through the matching sleeve 1 53 and the annular channel 541. The water pipe 52 is connected to the matching sleeve 2 54. One end of the water pipe 52 away from the matching sleeve 2 54 is connected to the water source. The water pump 51 is arranged on the water pipe 52. When spraying, the matching sleeve 1 53 rotates with the mounting disk 2, the matching sleeve 2 54 and the water pipe 52 are stationary relative to the mounting disk 2, and the water pump 51 drives the water in the water pipe 52 to be transported into the annular channel 541, and then enters the spray pipe 4 through the annular channel 541, and finally sprayed out through the spray port 41 to perform the dust removal operation.

[0041] Reference Figure 1 and Figure 2 A nozzle 6 is arranged on the frame 1, and the nozzle 6 is connected to the water pipe 52, and a plurality of nozzles 6 are arranged around the grinding belt 3, and the nozzle of the nozzle 6 is arranged toward the grinding belt 3. When grinding the steel bar 01, the water supply component 5 supplies water to the nozzle 6 through the water pipe 52 while supplying water to the spray pipe 4, and then sprays water through the nozzle 6. At the same time, by setting a plurality of nozzles 6, auxiliary spraying is performed at the grinding position at multiple angles, further improving the dust prevention effect.

[0042] Reference Figure 3 and Figure 4 Every two spray pipes 4 are arranged as a group, and the two groups of spray pipes 4 are arranged in parallel and spaced apart, and the two spray pipes 4 in each group are arranged spaced apart, and the spray port 41 is arranged toward the abutment between the steel bar 01 and the grinding belt 3, that is, water can be sprayed to the grinding part of the steel bar 01 during spraying, further improving the dust prevention effect.

[0043] Reference Figures 3 to 6In order to improve the grinding effect, the grinding belt 3 and the steel bar 01 are in contact, and the contact point between the grinding belt 3 and the steel bar 01 will be deformed to ensure the contact force between the grinding belt 3 and the steel bar 01, and at the same time increase the contact area between the grinding belt 3 and the steel bar 01, which is convenient for subsequent grinding. However, the pressure applied to the steel bar 01 will also increase, and the steel bar 01 will be driven to shake when the mounting plate 2 rotates, affecting the spraying and grinding effects. In order to improve the spraying and grinding effects, a support rod 7 is provided on the mounting plate 2, and two support rods 7 and two groups of grinding belts 3 are correspondingly provided. The support rod 7 is provided on the side of the grinding belt 3 close to the steel bar 01, and the support rod 7 is in contact with the steel bar 01 to support the steel bar 01, thereby reducing the shaking of the steel bar 01 during the contact between the grinding belt 3 and the steel bar 01 and during the grinding process. At the same time, the two groups of support rods 7 are set to the same length, and the support rods 7 abut against the side of the other group of grinding belts 3 away from the steel bars 01, thereby ensuring stable cooperation between the contact points of the grinding belts 3 and the steel bars 01 and improving the grinding effect.

[0044] Reference Figures 3 to 6 In addition, two groups of support rods 7 and steel bars 01 are arranged in the same plane, so that the support rods 7 support the grinding part of the corresponding grinding belt 3 while also supporting the other group of grinding belts 3, that is, the area between the two support rods 7 is the grinding area, which can achieve comprehensive support for the grinding area, reduce the shaking of the steel bars 01, and further improve the spraying and grinding effects. In addition, the support rod 7 is arranged between the two spray pipes 4 in each group, that is, the support rod 7 corresponds to the middle part of the two spray pipes 4, which reduces the phenomenon that the support rod 7 interferes with the spray pipe 4 spraying the grinding part.

[0045] Reference Figures 5 to 8, a mounting groove 23 is provided in the mounting plate 2, a control assembly 8 is provided in the mounting groove 23, two groups of control assembly 8 and two groups of grinding belts 3 are provided correspondingly, a plurality of slide grooves 24 connected with the mounting grooves 23 are provided on the mounting plate 2, and the driving roller 22 slides in the slide grooves 24. The control assembly 8 includes a control frame 81, a control gear 82 and a driving member 83, the control frame 81 is slidably arranged in the mounting groove 23 along the direction toward the axis of the mounting plate 2, the support rod 7 and the driving roller 22 are both connected to the control frame 81, a control rack 811 is provided on the control frame 81, and the control rack 811 is arranged along the sliding direction of the control frame 81, the driving member 83 can be set as a motor, the control gear 82 is arranged at the output end of the driving member 83, and the control gear 82 is meshed with the control rack 811. The driving member 83 drives the control gear 82 to rotate, and the rotation of the control gear 82 drives the control frame 81 to move through the control rack 811, drives the support rod 7 and the driving roller 22 to move, and then drives the support rod 7 and the grinding belt 3 to move to the specified position. Before grinding, the steel bar 01 is placed at the specified position through the through hole 21, and the positions of the support rod 7 and the driving roller 22 are adjusted so that the steel bar 01 can be placed between the support rod 7 and the grinding belt 3 before grinding, thereby improving the installation efficiency.

[0046] Reference Figures 5 to 8 A slider 9 is provided at one end of the support rod 7 close to the control frame 81. The slider 9 is slidably provided on the control frame 81 in the direction toward the center of the through hole 21, that is, the slider 9 slides in the direction toward the steel bar 01. An elastic member 91 is provided on the side of the slider 9 away from the steel bar 01. The elastic member 91 can be provided as a spring. One end of the spring is connected to the slider 9 and the other end is connected to the control frame 81. The spring is used to drive the slider 9 to slide in the direction toward the steel bar 01. A push rod 92 is provided at one end of the slider 9 close to the steel bar 01. The push rod 92 is provided in the direction toward the steel bar 01. When the control frame 81 moves to drive the support rod 7 and the driving roller 22 to move, the two groups of control frames 81 move synchronously. When the support rod 7 moves to contact the steel bar 01, the push rod 92 abuts against the side wall of the mounting groove 23. At this time, the grinding belt 3 contacts the steel bar 01. Then the control frame 81 continues to move, the slider 9 moves and compresses the elastic member 91, the support rod 7 stops moving, and the driving roller 22 moves to drive the grinding belt 3 to continue moving, thereby increasing the abutting pressure between the grinding belt 3 and the steel bar 01. At the same time, the grinding belt 3 deforms around the steel bar 01, thereby increasing the contact area between the grinding belt 3 and the steel bar 01, so as to ensure the grinding effect of the steel bar 01 in the later stage.

[0047] The implementation principle of the present invention is: the installation plate 2 rotates to drive the two sets of offset grinding belts 3 to rotate around the steel bar 01, and at the same time the driving roller 22 drives the grinding belt 3 to rotate, so as to grind the steel bar 01. During grinding, the spray pipe 4 sprays the position where the grinding belt 3 grinds the steel bar 01 through the spray port 41, and at the same time, auxiliary spraying is performed through the nozzle 6 to reduce the flying phenomenon of dust generated during grinding, thereby reducing the impact on the operator.

[0048] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. A rust removal device for building steel bars, comprising a frame (1) and a mounting plate (2) rotatably mounted on the frame (1), wherein a through hole (21) is provided at the center of the mounting plate (2) for the steel bar (01) to pass through, and characterized in that: The mounting plate (2) is provided with two groups of grinding belts (3) for grinding the steel bars (01). The two groups of grinding belts (3) are symmetrically arranged around the center of the through hole (21). The two groups of grinding belts (3) are arranged at intervals around the conveying direction of the steel bars (01). The mounting plate (2) is provided with two groups of spray pipes (4). The two groups of spray pipes (4) are arranged in a one-to-one correspondence with the two groups of grinding belts (3). The spray pipes (4) and the grinding belts (3) are arranged at intervals on a side close to the steel bars (01). The spray pipes (4) are provided with spray ports (41) for spraying and removing dust. The frame (1) is provided with a water supply assembly (5). The water supply assembly (5) is connected to the spray pipe (4) for supplying water to the spray pipe (4).

2. The rust removal device for construction steel bars according to claim 1, characterized in that: Every two of the spray pipes (4) are arranged as a group, the two groups of spray pipes (4) are arranged in parallel and spaced apart, the two spray pipes (4) in each group are arranged spaced apart, and the spray port (41) is arranged toward the abutment between the steel bar (01) and the grinding belt (3).

3. The rust removal device for construction steel bars according to claim 1, characterized in that: The water supply assembly (5) comprises a water pump (51), a water pipe (52), a matching sleeve 1 (53) and a matching sleeve 2 (54); the matching sleeve 1 (53) and the matching sleeve 2 (54) are rotatably sealed, and an annular channel (541) is formed between the matching sleeve 1 (53) and the matching sleeve 2 (54); the matching sleeve 1 (53) is connected to the mounting plate (2); the matching sleeve 1 (53) is coaxially arranged with the through hole (21); the end of the spray pipe (4) passes through the mounting plate (2) and the matching sleeve 1 (53) in sequence and is connected to the annular channel (541); one end of the water pipe (52) is connected to the matching sleeve 2 (54), and the other end is connected to a water source; the water pump (51) is arranged on the water pipe (52); and the water pump (51) is used to transport water to the spray pipe (4) for spraying.

4. The rust removal device for construction steel bars according to claim 3, characterized in that: A plurality of nozzles (6) are arranged on the frame (1); the nozzles (6) are connected to a water pipe (52); the nozzles (6) and the grinding belt (3) are arranged at intervals; and a plurality of nozzles (6) are arranged around the grinding belt (3).

5. The rust removal device for construction steel bars according to claim 2, characterized in that: A support rod (7) is provided on the mounting plate (2), and two support rods (7) are provided corresponding to the two groups of grinding belts (3). The support rod (7) is provided on a side of the grinding belt (3) close to the steel bar (01), and the support rod (7) abuts against the steel bar (01) to support the steel bar (01).

6. The rust removal device for construction steel bars according to claim 5, characterized in that: The two groups of support rods (7) have the same length, and the support rods (7) abut against a side of the other group of grinding belts (3) that is away from the steel bars (01).

7. The rust removal device for construction steel bars according to claim 6, characterized in that: The two groups of support rods (7) and steel bars (01) are arranged in the same plane, and the support rods (7) correspond to the middle position of two adjacent spray pipes (4) in each group.

8. The rust removal device for construction steel bars according to claim 5, characterized in that: The mounting plate (2) is provided with a mounting groove (23), the mounting plate (2) is provided with a slide groove (24), a control component (8) is arranged in the mounting groove (23), the support rod (7) and the driving roller (22) are connected to the control component (8) through the slide groove (24), and the control component (8) is used to drive the grinding belt (3) and the support rod (7) to cooperate with the steel bar (01).

9. The rust removal device for construction steel bars according to claim 8, characterized in that: The control assembly (8) comprises a control frame (81), a control gear (82) and a driving member (83); the control frame (81) is slidably arranged in the mounting groove (23) along a direction toward the axis of the mounting plate (2); the support rod (7) and the driving roller (22) are both connected to the control frame (81); a control rack (811) is arranged on the control frame (81); the driving member (83) is arranged in the mounting groove (23); the control gear (82) is arranged at the output end of the driving member (83); and the control gear (82) is meshed with the control rack (811).

10. The rust removal device for construction steel bars according to claim 9, characterized in that: A slider (9) is provided at one end of the support rod (7) close to the control frame (81); the slider (9) is slidably arranged on the control frame (81) in a direction toward the through hole (21); an elastic member (91) is provided on a side of the slider (9) away from the steel bar (01); the elastic member (91) and the control frame (81) are connected to drive the slider (9) to slide in a direction toward the steel bar (01); a push rod (92) is provided on a side of the slider (9) close to the steel bar (01); the slider (9) stops moving when the push rod (92) abuts against an inner wall of the mounting groove (23).

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