Rust removal device for embedded exposed reinforcing steel bars in constructional engineering

Abstract

The invention belongs to the technical field of rust removal, and discloses a constructional engineering pre-buried exposed steel bar rust removal device which comprises a supporting frame and a steel bar body and further comprises a guide assembly arranged on the supporting frame. And the rust removal assembly is mounted on the guide assembly. A first supporting rod and a winding wheel are driven by a second driving motor to rotate forwards and backwards, a grinding belt is wound and loosened in the rotating process of the winding wheel, the other end of the grinding belt pulls a storage wheel and a second supporting rod to rotate and compress a coil spring, the winding wheel reversely loosens one end of the grinding belt, and at the moment, the storage wheel resets and winds the grinding belt under the action of the coil spring; and in the process, the grinding belt is spirally wound around the outer portion of the steel bar body for grinding treatment, the contact area of the grinding belt and the outer portion of the steel bar body is increased, the grinding efficiency is improved, the grinding uniformity is guaranteed, and labor force is reduced.

Description

Technical Field

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

[0002] In construction engineering, pre-embedded exposed steel bars refer to steel bars that are pre-embedded inside concrete components, with their ends or part of their length intentionally exposed outside the concrete surface. Their core design function is to provide a reliable connection interface and anchorage conditions for subsequent structural components (such as secondary poured concrete, steel structure joints, or mechanical connections). However, if pre-embedded exposed steel bars are not temporarily protected or remain exposed for extended periods, they are highly susceptible to corrosion due to environmental erosion, which weakens the connection strength between the steel bars and the subsequent structure, posing a significant threat to the overall durability of the structure.

[0003] In current engineering practice, pre-embedded exposed steel bars are mainly used for welded or mechanical connections (such as grouted sleeve connections, threaded sleeve connections, etc.). The presence of rust products can cause technical hazards: in welding processes, rust layers may lead to defects such as incomplete welds and porosity; in mechanical connections, it may cause a decrease in the friction coefficient of the contact surface, inducing slip failure (a typical case is the failure of grouted sleeve connections in prefabricated buildings). Currently, the industry generally uses manual angle grinders for rust removal. However, due to the cylindrical geometry of the steel bars, the contact area between the flat grinding disc of the angle grinder and the curved surface of the steel bars is limited, resulting in low grinding efficiency, uneven grinding, and high labor intensity. Therefore, a rust removal device for pre-embedded exposed steel bars in building engineering is proposed. Summary of the Invention

[0004] To address the problems mentioned in the background art, the present invention provides a rust removal device for pre-embedded exposed steel bars in building engineering. This device solves the problems of low grinding efficiency, uneven grinding, and high labor intensity caused by the limited contact area between the flat grinding disc of the angle grinder and the curved surface of the steel bar when using existing angle grinders for rust removal.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a rust removal device for pre-embedded exposed steel bars in building engineering, comprising a support frame and a steel bar body, and further comprising: A guide assembly, which is disposed on the support frame; A rust removal assembly, which is mounted on the guide assembly; A storage component is mounted on the guide component, and the rust removal component and the storage component move along the guide component to remove rust from the exterior of the reinforcing steel body; The rust removal component includes a second drive motor mounted on the guide component. The bottom of the second drive motor is fixed with a first receiving component via a docking frame. The output end of the second drive motor is equipped with a first support rod located inside the first receiving component. A winding wheel is sleeved on the outside of the first support rod, and a grinding belt is connected to the outside of the winding wheel. The storage component includes a second receiving member connected to the guide component via a receiving frame. A storage wheel is sleeved inside the second receiving member via a second support rod. The other end of the grinding belt is wound around the outside of the storage wheel. A coil spring is provided at the top of the second support rod.

[0006] Preferably, one end of the initial polishing belt is connected to the outside of the take-up wheel, and the other end is wound around the outside of the storage wheel, with the coil spring in a relaxed state.

[0007] Preferably, the storage wheel is higher than the winding wheel, the grinding belt is spirally wound around the outside of the steel bar body, and the grinding surface of the grinding belt is in contact with the steel bar body; The second drive motor is a stepper motor, used to drive the first support rod and the winding wheel to wind and unwind the grinding belt.

[0008] Preferably, the take-up reel is sleeved on the outside of the support rod one, and the cover plate one is bolted to the bottom of the support rod one to fix the take-up reel to the support rod one; The storage wheel is sleeved on the outside of the second support rod, and the second cover plate is bolted to the bottom of the second support rod to fix the storage wheel to the outside of the second support rod; Both the second support rod and the first support rod are hexagonal in shape.

[0009] Preferably, a vertical groove is provided on the side of the receiving member two, a clamping member is fixedly installed on the outside of the receiving member two and located at the vertical groove, and an abutment member opened in the vertical groove is fixedly installed on the cover plate two.

[0010] Preferably, the length of the clamping member is adapted to the width of the grinding belt; The storage wheel is located inside the receiving part two. The grinding belt passes through the vertical groove and the clamping part. The cover plate two is installed at the bottom of the receiving part two, so that the abutment is engaged in the vertical groove, and the top of the cover plate contacts the side of the clamping part and the grinding belt.

[0011] Preferably, the guide assembly includes a guide rod and a threaded rod fixed on the support frame. The threaded rod is threaded with a sleeve transmission component, and the sleeve transmission component is sleeved with a connecting frame. The connecting frame consists of two sleeves, which are respectively sleeved on the sleeve transmission component and the guide rod. The connecting frame is externally fixed with a support connecting ring sleeved on the outside of the receiving component.

[0012] Preferably, a first transmission gear is fixedly mounted on the top of the sleeve transmission component, and a second transmission gear that meshes with the first transmission gear is fixedly mounted on the top of the docking frame. The teeth of the first transmission gear are in the shape of arc-shaped plates.

[0013] Preferably, the sleeve transmission component is provided with a protective cover that is sleeved on the outside of the transmission gear two and the transmission gear one; The external of the sleeve transmission component is fixedly equipped with a second transmission wheel, and a first drive motor is provided on the protective cover. The output end of the first drive motor is equipped with a first transmission wheel, and the first transmission wheel and the second transmission wheel are driven by a belt.

[0014] Preferably, one end of the receiving frame is connected to the supporting connecting ring, and the other end is connected to the receiving component two; The drive motor drives the sleeve transmission component and the transmission gear to move upward along the threaded rod, and through the connecting frame, the support connecting ring and the receiving frame, respectively drive the receiving component 2 and the receiving component 1 to move upward synchronously.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: This invention uses a second drive motor to drive a first support rod and a take-up wheel to rotate in both directions. During the rotation of the take-up wheel, the grinding belt is wound up and unwound. When the take-up wheel winds up the grinding belt, the other end of the grinding belt pulls the storage wheel and the second support rod to rotate and compress the coil spring. The take-up wheel then loosens one end of the grinding belt in the opposite direction. At this time, the storage wheel resets and winds up the grinding belt under the action of the coil spring. In this way, the reciprocating motion of the grinding belt removes the rust on the outside of the steel bar through the grinding surface. During this process, the grinding belt is spirally wound around the outside of the steel bar for grinding treatment, which increases the contact area between the grinding belt and the outside of the steel bar, improves grinding efficiency, ensures the uniformity of grinding, and reduces labor. This invention removes external rust from the main body of the steel bar by driving a second drive motor to reciprocate the grinding belt. At the same time, the first drive motor starts synchronously and drives the transmission wheel and belt to rotate the sleeve transmission component and the transmission gear. Under the action of the external thread of the threaded rod, the gear moves upward along the threaded rod. Thus, through the connecting frame, the support connecting ring and the receiving frame, the receiving component one and the receiving component two move upward synchronously, so that the grinding belt moves upward along the main body of the steel bar, realizing the rust removal work of the entire main body of the steel bar. This invention utilizes the rotation of transmission gear one to drive transmission gear two, docking frame, and receiving component one to rotate synchronously. During the rotation of receiving component one, the grinding belt is wound up. As the rust removal component and storage component continue to move upward along the threaded rod, receiving component one and winding wheel continue to rotate, gradually winding the grinding belt wound on the storage wheel onto the winding wheel. During this process, the unused grinding surface of the grinding belt continuously contacts the outside of the steel bar body, while the used grinding belt is wound onto the winding wheel, thereby ensuring the effectiveness of the grinding belt in removing rust from the steel bar body. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the planar structure of the present invention; Figure 2 This is a schematic diagram of the external structure of the present invention; Figure 3 This is a schematic diagram of the cooperation structure between the guide component and the rust removal component of the present invention; Figure 4 This is a schematic diagram showing the disassembled structure of the guide component and the rust removal component of the present invention; Figure 5 This is a schematic diagram of the disassembled structure of the guide component of the present invention; Figure 6 This is a schematic diagram showing the disassembled structure of the guide component and the rust removal component of the present invention; Figure 7 This is a schematic diagram of the rust removal component and storage component working together in this invention; Figure 8 This is a schematic diagram of the disassembled structure of the rust removal component of the present invention; Figure 9 This is a schematic diagram of the disassembled structure of the storage component of the present invention.

[0017] In the diagram: 1. Support frame; 2. Main steel reinforcement; 3. Guide assembly; 31. Guide rod; 32. Threaded rod; 33. Connecting frame; 34. Protective cover; 35. Sleeve transmission component; 36. Transmission gear one; 37. Drive motor one; 38. Transmission wheel one; 39. Transmission wheel two; 30. Support connecting ring; 4. Rust removal assembly; 41. Drive motor two; 42. Connecting frame; 43. Transmission gear two; 44. Receiving component one; 45. Support rod one; 46. Winding wheel; 47. Cover plate one; 48. Grinding belt; 5. Storage assembly; 51. Receiving component two; 52. Receiving frame; 53. Coil spring; 54. Storage wheel; 55. Cover plate two; 56. Support rod two; 57. Clamping component; 58. Vertical groove; 59. Abutment component. Detailed Implementation

[0018] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] like Figures 1 to 9 As shown, the present invention provides a rust removal device for exposed steel bars embedded in building construction, comprising a support frame 1 and a steel bar body 2, and further comprising: Guide component 3 is mounted on support frame 1; Rust removal component 4 is installed on guide component 3; Storage component 5 is mounted on guide component 3. Rust removal component 4 and storage component 5 move along guide component 3 to remove rust from the exterior of steel reinforcement body 2. The rust removal component 4 includes a second drive motor 41 mounted on the guide component 3. The bottom of the second drive motor 41 is fixedly mounted with a first support component 44 via a docking frame 42. The output end of the second drive motor 41 is equipped with a first support rod 45 located inside the first support component 44. A winding wheel 46 is sleeved on the outside of the first support rod 45. A grinding belt 48 is connected to the outside of the winding wheel 46. The storage component 5 includes a second support member 51 connected to the guide component 3 via a support frame 52. The storage wheel 54 is sleeved inside the second support member 51 via a second support rod 56. The other end of the grinding belt 48 is wound around the outside of the storage wheel 54. A coil spring 53 is provided at the top of the second support rod 56. One end of the initial polishing belt 48 is connected to the outside of the take-up wheel 46, and the other end is wound around the outside of the storage wheel 54, with the coil spring 53 in a relaxed state. The storage wheel 54 is higher than the winding wheel 46, and the grinding belt 48 is spirally wound around the outside of the steel bar body 2, with the grinding surface of the grinding belt 48 in contact with the steel bar body 2. The second drive motor 41 is a stepper motor, used to drive the first support rod 45 and the winding wheel 46 to wind and unwind the grinding belt 48.

[0020] Storage wheel 54 and take-up wheel 46 are respectively fitted onto support rod 2 56 and support rod 1 45, and are located inside receiving part 2 51 and receiving part 1 44 respectively. One end of the initial grinding belt 48 is connected to the outside of the take-up wheel 46, and the other end is wound around the outside of the storage wheel 54, so that the grinding surface of the grinding belt 48 is spirally wound around the outside of the steel bar body 2. The support rod 1 45 and the take-up wheel 46 are driven to rotate in both directions by drive motor 2 41. During the rotation of the take-up wheel 46, the grinding belt 48 is wound up and unwound, and when the take-up wheel 46 winds up the grinding belt 48... The other end of the grinding belt 48 pulls the storage wheel 54 and the support rod 56 to rotate and compress the coil spring 53. The winding wheel 46 loosens one end of the grinding belt 48 in the opposite direction. At this time, the storage wheel 54 resets and winds up the grinding belt 48 under the action of the coil spring 53. Thus, the grinding belt 48 reciprocates through the grinding surface to remove the rust on the outside of the steel bar body 2. In this process, the grinding belt 48 is spirally wound around the outside of the steel bar body 2 for grinding treatment, which increases the contact area between the grinding belt 48 and the outside of the steel bar body 2, improves the grinding efficiency, ensures the uniformity of grinding, and reduces labor.

[0021] like Figures 7-9 As shown, the take-up reel 46 is sleeved on the outside of the support rod 45, and the cover plate 47 is bolted to the bottom of the support rod 45 to fix the take-up reel 46 to the support rod 45. Storage wheel 54 is sleeved on the outside of support rod 2 56, and cover plate 2 55 is bolted to the bottom of support rod 2 56 to fix storage wheel 54 to the outside of support rod 2 56; Both support rod 256 and support rod 145 are hexagonal.

[0022] The storage wheel 54 and the take-up wheel 46 are fitted onto the outside of the second support rod 56 and the first support rod 45. The second cover plate 55 and the first cover plate 47 are then installed on the bottom of the second support piece 51 and the first support piece 44. The storage wheel 54 and the take-up wheel 46 are placed on the second support piece 51 and the first support piece 44. Since the first support rod 45 and the second support rod 56 are hexagonal, the second drive motor 41 drives the first support rod 45 to rotate, thereby synchronously driving the take-up wheel 46 to rotate and rewind the grinding belt 48. The other end pulls the second support rod 56 to rotate and compress the coil spring 53. The grinding belt 48 reciprocates to grind the outside of the steel bar body 2. After the grinding belt 48 is used, it is easier to remove and replace the grinding belt 48 than to replace the grinding parts of the existing angle grinder, thereby improving the efficiency of removing rust from the outside of the steel bar body 2.

[0023] like Figure 7 and Figure 9 As shown, a vertical groove 58 is provided on the side of the receiving part 2 51, and a clamping part 57 is fixedly installed on the outside of the receiving part 2 51 and located in the vertical groove 58. An abutting part 59 opened in the vertical groove 58 is fixedly installed on the cover plate 2 55. The length of the clamping member 57 is adapted to the width of the polishing belt 48; The storage wheel 54 is located inside the receiving part 51. The grinding belt 48 passes through the vertical groove 58 and the clamping part 57. The cover plate 55 is installed at the bottom of the receiving part 51, so that the abutment 59 is engaged in the vertical groove 58, and its top contacts the side of the clamping part 57 and the grinding belt 48.

[0024] The storage wheel 54 is placed inside the support rod 56 and the receiving part 51. The grinding belt 48 passes through the vertical groove 58 and the clamping part 57. The cover plate 55 is then installed on the support rod 56 with bolts, so that the storage wheel 54 is fixed inside the receiving part 51. The abutment 59 is engaged in the vertical groove 58 and its top abuts against the bottom of the clamping part 57. The edge of the grinding belt 48 contacts the top of the abutment 59. At the same time, since the storage wheel 54 is higher than the winding wheel 46, the driving motor 41 drives the winding wheel 46 to rotate and pull the grinding belt 48 to move. The grinding belt 48 is always in a spiral posture and wrapped around the outside of the steel bar body 2, ensuring the effect of removing rust from the steel bar body 2.

[0025] like Figures 2-6As shown, the guide assembly 3 includes a guide rod 31 and a threaded rod 32 fixed on the support frame 1. The threaded rod 32 is threaded with a connecting transmission component 35. The connecting transmission component 35 is connected with a connecting frame 33. The connecting frame 33 is composed of two sleeves, which are respectively fitted onto the connecting transmission component 35 and the guide rod 31. A support connecting ring 30 is fixedly mounted on the outside of the connecting frame 33 and sleeved on the outside of the receiving part 44; A transmission gear 36 is fixedly mounted on the top of the sleeve transmission component 35, and a transmission gear 43 that meshes with the transmission gear 36 is fixedly mounted on the top of the docking frame 42. The teeth of the transmission gear 36 are in the shape of arc-shaped plates; A protective cover 34 is provided on the outside of the sleeve transmission component 35, which is sleeved on the outside of the transmission gear 2 43 and the transmission gear 1 36. A transmission wheel 39 is fixedly mounted on the outside of the sleeve transmission component 35. A drive motor 37 is installed on the protective cover 34. A transmission wheel 38 is assembled at the output end of the drive motor 37. The transmission wheel 38 and the transmission wheel 39 are driven by a belt. One end of the receiving frame 52 is connected to the support connecting ring 30, and the other end is connected to the receiving part 51; The drive motor 37 drives the sleeve transmission component 35 and the transmission gear 36 to move upward along the threaded rod 32, and through the connecting frame 33, the support connecting ring 30 and the receiving frame 52 respectively drive the receiving component 51 and the receiving component 44 to move upward synchronously.

[0026] The grinding belt 48 is reciprocated by the second drive motor 41 to remove the external rust of the steel bar body 2. At the same time, the first drive motor 37 starts synchronously and drives the transmission wheel 38 and belt to rotate the sleeve transmission component 35 and the transmission gear 36. Under the action of the external thread of the threaded rod 32, the gear moves upward along the threaded rod 32. Thus, the first support component 44 and the second support component 51 move upward synchronously through the connecting frame 33, the support connecting ring 30 and the receiving frame 52, so that the grinding belt 48 moves upward along the steel bar body 2, realizing the rust removal work of the entire steel bar body 2.

[0027] During the rotation of transmission gear 36, transmission gear 43, docking frame 42 and receiving component 44 rotate synchronously. During the rotation of receiving component 44, the grinding belt 48 is wound up. As the rust removal component 4 and storage component 5 continue to move up along the threaded rod 32, receiving component 44 and winding wheel 46 continue to rotate, gradually winding the grinding belt 48 wound on storage wheel 54 onto winding wheel 46. During this process, the unused grinding surface of grinding belt 48 continuously contacts the outside of the steel bar body 2, and the used grinding belt 48 is wound onto winding wheel 46, thereby ensuring the rust removal effect of grinding belt 48 on steel bar body 2.

[0028] This explains that as the rust removal component 4 and the storage component 5 move upward along the external thread of the threaded rod 32, and drive the receiving part 44 to rotate and rewind the grinding belt 48, a single 0.5m sanding belt grinds 20 to 50m of steel bars.

[0029] Conversely, after the main body 2 of a single steel bar is ground, the drive motor 37 drives the transmission gear 36 and the sleeve transmission component 35 to rotate in opposite directions. Since the external teeth of the transmission gear 36 are arc-shaped, when rotating in the opposite direction, the transmission gear 36 and the transmission gear 43 are pulled by the grinding belt 48 and cannot rotate. This avoids the phenomenon of the grinding belt 48 moving, so that it can be separated from the steel bar main body 2 after the rust removal is completed, and the unremoved steel bar main body 2 can be replaced for continued use.

[0030] Working principle and usage process of this invention: Storage wheel 54 and take-up wheel 46 are respectively fitted onto support rod 2 56 and support rod 1 45, and are located inside receiving part 2 51 and receiving part 1 44 respectively. One end of the initial grinding belt 48 is connected to the outside of the take-up wheel 46, and the other end is wound around the outside of the storage wheel 54, so that the grinding surface of the grinding belt 48 is spirally wound around the outside of the steel bar body 2. The support rod 1 45 and the take-up wheel 46 are driven to rotate in both directions by drive motor 2 41. During the rotation of the take-up wheel 46, the grinding belt 48 is subjected to pressure. When the winding wheel 46 winds up the grinding belt 48, the other end of the grinding belt 48 pulls the storage wheel 54 and the support rod 56 to rotate and compress the coil spring 53. The winding wheel 46 loosens one end of the grinding belt 48 in the opposite direction. At this time, the storage wheel 54 resets and winds up the grinding belt 48 under the action of the coil spring 53. In this way, the grinding belt 48 reciprocates through the grinding surface to remove the rust on the outside of the steel bar body 2. During this process, the grinding belt 48 is spirally wound around the outside of the steel bar body 2 for grinding treatment. The grinding belt 48 is driven by the second drive motor 41 to reciprocate to remove the external rust of the steel bar body 2. At the same time, the first drive motor 37 starts synchronously and drives the sleeve transmission component 35 and the transmission gear 36 to rotate through the transmission wheel 38 and belt. Under the action of the external thread of the threaded rod 32, the gear moves upward along the threaded rod 32. Thus, the first support component 44 and the second support component 51 move upward synchronously through the connecting frame 33, the support connecting ring 30 and the receiving frame 52, so that the grinding belt 48 moves upward along the steel bar body 2, realizing the rust removal work of the entire steel bar body 2. During the rotation of transmission gear 36, transmission gear 43, docking frame 42 and receiving component 44 rotate synchronously. During the rotation of receiving component 44, the grinding belt 48 is wound up. As the rust removal component 4 and storage component 5 continue to move up along the threaded rod 32, receiving component 44 and winding wheel 46 continue to rotate, gradually winding the grinding belt 48 wound on storage wheel 54 onto winding wheel 46. During this process, the unused grinding surface of grinding belt 48 continuously contacts the outside of the steel bar body 2, and the used grinding belt 48 is wound onto winding wheel 46, thereby ensuring the rust removal effect of grinding belt 48 on steel bar body 2. Conversely, after the main body 2 of a single steel bar is ground, the drive motor 37 drives the transmission gear 36 and the sleeve transmission component 35 to rotate in opposite directions. Since the external teeth of the transmission gear 36 are arc-shaped, when rotating in the opposite direction, the transmission gear 36 and the transmission gear 43 are pulled by the grinding belt 48 and cannot rotate. This avoids the phenomenon of the grinding belt 48 moving, so that it can be separated from the steel bar main body 2 after the rust removal is completed, and the unremoved steel bar main body 2 can be replaced for continued use.

[0031] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0032] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A rust removal device for pre-embedded exposed steel bars in building construction, comprising a support frame (1) and a steel bar body (2), characterized in that, Also includes: A guide component (3) is disposed on the support frame (1); Rust removal component (4), which is mounted on the guide component (3); Storage component (5), the storage component (5) is mounted on the guide component (3), the rust removal component (4) and the storage component (5) move along the guide component (3) to remove rust from the outside of the steel reinforcement body (2); The rust removal component (4) includes a second drive motor (41) mounted on the guide component (3). The bottom of the second drive motor (41) is fixed with a first receiving component (44) via a docking frame (42). The output end of the second drive motor (41) is equipped with a first support rod (45) located inside the first receiving component (44). A winding wheel (46) is sleeved on the outside of the first support rod (45). A grinding belt (48) is connected to the outside of the winding wheel (46). The storage component (5) includes a second support member (51) connected to the guide component (3) via a support frame (52). The storage wheel (54) is sleeved inside the second support member (51) via a second support rod (56). The other end of the grinding belt (48) is wound around the outside of the storage wheel (54). A coil spring (53) is provided at the top of the second support rod (56).

2. The rust removal device for pre-embedded exposed steel bars in building engineering according to claim 1, characterized in that: Initially, one end of the polishing belt (48) is connected to the outside of the take-up wheel (46), and the other end is wound around the outside of the storage wheel (54), with the coil spring (53) in a relaxed state.

3. The rust removal device for exposed steel bars embedded in building construction as described in claim 1, characterized in that: The storage wheel (54) is higher than the winding wheel (46), the grinding belt (48) is spirally wound around the outside of the steel bar body (2), and the grinding surface of the grinding belt (48) is in contact with the steel bar body (2); The second drive motor (41) is a stepper motor, used to drive the first support rod (45) and the winding wheel (46) to wind and unwind the grinding belt (48).

4. The rust removal device for exposed steel bars embedded in building construction as described in claim 1, characterized in that: The take-up reel (46) is sleeved on the outside of the support rod (45), and the cover plate (47) is bolted to the bottom of the support rod (45) to fix the take-up reel (46) to the support rod (45); The storage wheel (54) is sleeved on the outside of the support rod two (56), and the cover plate two (55) is bolted to the bottom of the support rod two (56) to fix the storage wheel (54) to the outside of the support rod two (56); Both the second support rod (56) and the first support rod (45) are hexagonal.

5. The rust removal device for exposed reinforcing bars embedded in building construction projects according to claim 4, characterized in that: The second receiving member (51) has a vertical groove (58) on its side. A clamping member (57) is fixedly installed on the outside of the second receiving member (51) and at the vertical groove (58). An abutting member (59) opened in the vertical groove (58) is fixedly installed on the second cover plate (55).

6. The rust removal device for pre-embedded exposed steel bars in building construction according to claim 5, characterized in that: The length of the clamping member (57) is adapted to the width of the grinding belt (48); The storage wheel (54) is located inside the receiving part two (51), the polishing belt (48) passes through the vertical groove (58) and the clamping part (57), and the cover plate two (55) is installed at the bottom of the receiving part two (51), so that the abutment (59) is engaged in the vertical groove (58), and the top of the abutment (59) contacts the side of the clamping part (57) and the polishing belt (48).

7. The rust removal device for exposed reinforcing bars embedded in building construction according to claim 1, characterized in that: The guide assembly (3) includes a guide rod (31) and a threaded rod (32) fixed on the support frame (1). The threaded rod (32) is threaded with a sleeve transmission component (35). The sleeve transmission component (35) is sleeved with a connecting frame (33). The connecting frame (33) is composed of two sleeves, which are respectively sleeved on the sleeve transmission component (35) and the guide rod (31). The connecting frame (33) is externally fixed with a support connecting ring (30) sleeved on the outside of the receiving part (44).

8. The rust removal device for pre-embedded exposed steel bars in building construction according to claim 7, characterized in that: The top of the sleeve transmission component (35) is fixedly equipped with a transmission gear one (36), and the top of the docking frame (42) is fixedly equipped with a transmission gear two (43) that meshes with the transmission gear one (36). The teeth of the transmission gear (36) are in the shape of arc plates.

9. The rust removal device for exposed reinforcing bars embedded in building construction according to claim 8, characterized in that: The sleeve transmission component (35) is provided with a protective cover (34) sleeved on the outside of the transmission gear two (43) and the transmission gear one (36). The external of the sleeve transmission component (35) is fixed with a transmission wheel two (39), and a drive motor one (37) is provided on the protective cover (34). The output end of the drive motor one (37) is equipped with a transmission wheel one (38), and the transmission wheel one (38) and the transmission wheel two (39) are driven by a belt.

10. The rust removal device for pre-embedded exposed steel bars in building construction according to claim 9, characterized in that: One end of the receiving frame (52) is connected to the supporting connecting ring (30), and the other end is connected to the receiving part two (51); The drive motor (37) drives the sleeve transmission component (35) and the transmission gear (36) to move upward along the threaded rod (32), and through the connecting frame (33), the support connecting ring (30) and the receiving frame (52), respectively drive the receiving component (51) and the receiving component (44) to move upward synchronously.

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