A repair apparatus and process for concrete pock, pop-out and rust repair

Abstract

The application discloses a repairing device and process for repairing concrete bulges, burst points and corrosion, and belongs to the technical field of repairing concrete members. The process comprises the following steps: removing the putty layer on the surface of the concrete member to be repaired; checking the bulge points of the concrete base layer, removing the loose concrete by chiseling, and cleaning the loose concrete; chiseling the surface of the concrete base layer, washing the surface of the concrete base layer by using a high-pressure water jet, spraying or smearing polymer modified cement mortar, repairing the chiseled pits, pressing alkali-resistant glass fiber mesh cloth, and smearing the surface flat. The repairing process can completely remove the hidden troubles of the bulges and burst points, clean the loose concrete by chiseling, and make the polymer modified cement mortar better adhere to the surface. The alkali-resistant glass fiber mesh cloth further enhances the surface crack resistance, and greatly enhances the surface structure stability of the repaired concrete member.

Description

Technical Field

[0001] This invention relates to the field of concrete component repair technology, specifically to a repair equipment and process for repairing concrete bulges, bursts, and corrosion. Background Technology

[0002] In concrete construction, defects such as bulges and bursts occasionally appear on the surface of concrete components. This is generally due to the presence of unstable components within the concrete, such as steel slag and sulfide aggregates. These unstable components undergo chemical reactions in humid environments, increasing in volume and generating enormous expansion forces. When these expansion forces exceed the tensile strength of the concrete surface layer, they push outwards, forming localized bulges (bulges) or causing surface cracking and spalling (bursts). If bulges and bursts are not repaired promptly, external carbon dioxide and moisture will rapidly penetrate through the cracks, accelerating the expansion of the unstable components and leading to large-scale corrosion of the reinforcing steel in the concrete structure. The appearance of bursts often indicates that many potential bursts have not yet occurred, thus requiring timely and comprehensive repairs. Summary of the Invention

[0003] To address the aforementioned technical deficiencies, the purpose of this invention is to provide a repair device and process for repairing concrete bulges, bursts, and corrosion. Through a series of repair steps, the potential hazards of bulges and bursts are eliminated, and the surface of concrete components is restored.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: The present invention provides a repair process for repairing concrete bulges, bursts, and corrosion, comprising the following steps: Step 1: Remove the putty layer from the surface of the concrete component to be repaired until the concrete base layer is exposed; Step 2: Inspect the concrete base for bulges, and remove loose concrete by chiseling away the bulges. Step 3: Roughen the surface of the concrete base layer, wash the concrete base layer surface with a high-pressure water jet until the structural surface is exposed and remove any burst points; Step 4: Spray or apply polymer-modified cement mortar to the bulging areas after chiseling to repair the chiseled pits; Step 5: Spray polymer-modified cement mortar onto the repaired concrete base surface, press in alkali-resistant fiberglass mesh and smooth it out; Step 6: Perform maintenance for no less than 7 days.

[0005] Preferably, in step three, when using a chiseling device to perform chiseling, high-pressure water jets are applied to the chiseling area during the chiseling process to accelerate the peeling of loose concrete, and the chiseling depth is 1mm-5mm.

[0006] Preferably, between steps four and five, stainless steel wire mesh is fully hung on the surface of the concrete base layer, and the stainless steel wire mesh is fixed in a stud pattern using nails to form an isolation and restraint layer.

[0007] A repair device for repairing concrete bulges, bursts and rust includes a mobile chassis and a chisel assembly, wherein the mobile chassis is provided with a lifting mechanism for driving the chisel assembly to rise and fall. The chiseling assembly includes a chisel head and an adjustment structure for adjusting the orientation of the chisel head. The chisel head is equipped with multiple spray nozzles and multiple movable pins. The movable pins are slidably mounted on the chisel head and are driven by a power mechanism to reciprocate. The spray nozzles are at a certain angle to the movable pins. The spray nozzles are connected to an external water supply device to spray high-pressure water. The high-pressure water impacts the concrete surface chiseled by the movable pins at a certain angle.

[0008] Preferably, the chisel head includes a housing, a mounting plate is fixed to the front end of the housing, a plurality of mounting holes are provided on the mounting plate, a linear bearing is provided in the mounting holes, the movable chisel is inserted in the linear bearing, a counterweight plate is fixed to the front end of the movable chisel, and a plurality of chisel tips are fixed on the counterweight plate.

[0009] Preferably, the power mechanism includes: Multiple cylinders, with a limit plate fixed inside the housing, the cylinders fixed on the limit plate, and pistons fixed at the ends of multiple movable needles, the pistons corresponding one-to-one with the multiple cylinders and slidably and sealed in the corresponding cylinders; The pneumatic pipeline is connected to the inner cavity of multiple cylinders and is connected to an external air supply device to intermittently deliver high-pressure air into the cylinders to drive piston displacement.

[0010] Preferably, the power mechanism further includes a return spring, a limit ring is fixed on the movable pin between the limit plate and the mounting plate, and the return spring is sleeved on the movable pin between the limit ring and the mounting plate.

[0011] Preferably, multiple pipes are rotatably mounted on the mounting plate. One end of each pipe is connected to a rotary joint inside the housing, and the other end extends out of the housing and is connected to a spray nozzle. The rotary joint is connected to an external water supply device. When the pipe rotates, it drives the spray nozzle to rotate, causing the high-pressure water jet from the spray nozzle to impact the concrete that has been chiseled by multiple movable picks.

[0012] Preferably, sprockets are fixed on multiple tubes inside the housing, chains are wound around the multiple sprockets, a geared motor is fixed inside the housing, a first gear is fixed on the output shaft of the geared motor, and a second gear that meshes with the first gear is fixed on one of the tubes.

[0013] Preferably, the adjustment structure includes a mounting base and a connecting plate. A pin is fixed on the housing. The pin is rotatably mounted on the mounting base and passes through the connecting plate. The connecting plate is fixedly connected to the housing and has a limiting hole. The mounting base has three positioning holes. When the limiting hole is aligned with one of the positioning holes, the positioning pin passes through the limiting hole and the positioning hole to fix the chisel head.

[0014] The beneficial effects of this invention are as follows: In the repair process of this invention, the concrete component is cleaned layer by layer. First, the surface putty layer is removed to expose the bulging concrete part. Then, the bulging part is removed to remove the bursting material and prevent the bursting point from recurring. This completely eliminates the hidden dangers of bulging and bursting points. Then, the surface roughness of the concrete component is improved by chiseling and cleaning the loose concrete to improve the surface roughness of the concrete component and allow the polymer modified cement mortar to adhere better. The alkali-resistant fiberglass mesh further enhances the surface crack resistance and greatly enhances the surface structural stability of the repaired concrete component.

[0015] In the repair equipment designed in this invention, a movable pick and a spray nozzle work together. When the movable pick moves back and forth and chisels the concrete surface, cracks and loose blocks will be generated on the concrete surface. High-pressure water jets are sprayed from the spray nozzle and impact the chisel point at a certain angle. The water flow enters the cracks and creates a water wedge effect, which quickly peels off the loose blocks and significantly improves the chiseling efficiency. The spray nozzle is connected to a rotary joint through a pipe. When the pipe rotates, the spray nozzle generates a dynamically changing impact trajectory. Compared with a fixed jet, this rotating jet has a wider coverage area and can be used with multiple movable picks to more effectively clean irregular concrete surfaces.

[0016] By setting an adjustment structure, the present invention allows the repair equipment to flexibly adjust the orientation of the chisel head according to the location of the surface to be repaired (such as the top surface, side wall, or ground). Combined with the moving chassis and lifting mechanism, it greatly expands the working space of the chisel assembly and reduces the labor intensity of manual labor. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of a concrete component structure for repairing concrete bulges, bursts, and corrosion, provided as an embodiment of the present invention.

[0019] Figure 2This is a schematic diagram of the overall structure of a repair equipment for repairing concrete bulges, bursts, and corrosion, provided as an embodiment of the present invention.

[0020] Figure 3 This is a perspective view of the chisel head and mounting base in this invention.

[0021] Figure 4 This is a schematic diagram of the structure of the chisel head and the connecting plate in this invention.

[0022] Figure 5 This is a schematic diagram of the internal structure of the chisel head in this invention.

[0023] Figure 6 This is a schematic diagram of the power mechanism of the movable needle pick in this invention.

[0024] Figure 7 for Figure 6 A magnified view of a portion of point A in the middle.

[0025] Figure 8 This is a diagram showing the positional distribution of the chisel tip and nozzle of the movable needle pick in this invention.

[0026] Explanation of reference numerals in the attached figures: 1. Concrete base layer; 2. Isolation and restraint layer; 3. Putty layer; 4. Mobile chassis; 5. Lifting mechanism; 6. Chisel head; 7. Spray nozzle; 8. Movable needle pick; 9. Housing; 10. Mounting plate; 11. Counterweight plate; 12. Chisel tip; 13. Cylinder; 14. Limiting plate; 15. Pneumatic pipeline; 16. Return spring; 17. Limiting ring; 18. Pipe body; 19. Rotary joint; 20. Sprocket; 21. Chain; 22. Gear motor; 23. First gear; 24. Second gear; 25. Mounting base; 26. Connecting plate; 27. Pin shaft; 28. Limiting hole; 29. ​​Positioning hole; 30. Splash guard. Detailed Implementation

[0027] 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.

[0028] Example 1: like Figures 1 to 8 As shown, this invention provides a repair process for concrete bulges, bursts, and corrosion. It is mainly used to repair bulges, bursts, and corrosion on concrete walls, ceilings, beams, and columns caused by steel slag mixed in with the concrete. The specific steps include: Step 1: Perform preliminary cleaning of the concrete component surface. Use a shovel to remove the putty layer 3 from the surface of the concrete component to be repaired until the underlying concrete base layer 1 is completely exposed. At this point, the concrete area with bulges can be preliminarily observed, facilitating subsequent targeted chiseling and repair.

[0029] Step 2: Conduct a comprehensive manual inspection of the exposed concrete base layer 1 for any bulges. This primarily involves manually observing the concrete base layer 1 to determine the location of any bulges. Once the location is confirmed, use an electric hammer to chisel away the concrete at the bulge location, removing loose concrete from the surrounding area. This removes slag and other explosive materials from the concrete base layer 1, preventing future explosions and completely eliminating the potential for bulges and explosions.

[0030] Step 3: Roughen the exposed concrete base surface 1. After roughening, wash the concrete base surface 1 with a high-pressure water jet until a hard, dense, and rough structural surface is exposed. At the same time, remove any newly discovered bursts during the roughening process. Roughening effectively improves the surface roughness of the concrete component, allowing subsequent materials to adhere better.

[0031] Existing chiseling equipment or the repair equipment designed in this invention can be used for roughening. When using the repair equipment of this invention for roughening, high-pressure water jets are simultaneously applied to the chiseling area during the chiseling process. This allows the concrete cracks created by the movable pick 8 to be immediately washed away by the high-pressure water jets. The high-pressure water jets create a water wedge effect, and the synchronous action of the water wedges and mechanical chiseling further accelerates the removal of loose concrete, thereby effectively speeding up the roughening process. The roughening depth is 1mm to 5mm. Within this depth range, it is possible to remove loose concrete from the surface without excessively damaging the normal structural layers.

[0032] Step 4: Spray or apply polymer-modified cement mortar to the bulging areas after chiseling to repair the pits and restore the smoothness of the concrete base layer 1. The strength of the polymer-modified cement mortar should not be less than 30 MPa. After repairing the pits, fully cover the exposed surface of the concrete base layer 1 with stainless steel wire mesh. The diameter of the stainless steel wire is 0.9 mm, and the mesh size is 50 mm by 50 mm. Subsequently, use nails to firmly fix the stainless steel wire mesh in a staggered pattern, with a nail spacing of 400 mm.

[0033] Step 5: Spray polymer-modified cement mortar again onto the repaired concrete base layer 1. A stainless steel wire mesh forms an isolation and restraint layer 2 on the concrete base layer 1 surface. The polymer-modified cement mortar is sprayed onto both the stainless steel wire mesh and the concrete base layer 1 surface. The stainless steel wire mesh acts as a supporting skeleton, effectively increasing the connection strength between the polymer-modified cement mortar and the concrete base layer 1, while resisting tensile forces generated by internal stress or structural micro-deformation, preventing secondary cracking or detachment of the repaired surface. While the mortar is still wet, press alkali-resistant fiberglass mesh into the mortar layer and manually smooth it. Use a notched trowel to create small stripes. The alkali-resistant fiberglass mesh further enhances the crack resistance of the repaired surface, significantly increasing the surface structural stability of the repaired concrete components. The thickness of the polymer-modified cement mortar sprayed when repairing interior ceilings and beams is 6 to 8 mm, while the thickness is 10 to 12 mm when repairing interior walls and columns.

[0034] Step Six: After completing the above repair steps, begin curing for at least 7 days to ensure the polymer-modified cement mortar reaches its design strength, thus concluding the entire repair process. Afterwards, simply reapply the putty layer 3 as usual.

[0035] Example 2: To meet the roughening requirements in the above-mentioned process, this embodiment provides a repair device for repairing concrete bulges, bursts, and rust. Its main function is roughening, and it includes a movable chassis 4 and a roughening assembly. The movable chassis 4 has rollers at its bottom and a handle fixed at the rear for easy manual movement and control of the entire repair device. A lifting mechanism 5 is provided on the movable chassis 4 to drive the roughening assembly up and down, changing the working height of the roughening assembly to adapt to repair operations at different heights. The lifting mechanism 5 can be implemented using existing structures; this invention does not have special requirements for the lifting mechanism 5. For example, it can be a vertical track fixed to the front of the movable chassis 4, with the roughening assembly slidably mounted on the track. Then, sprockets are rotated at the upper and lower ends of the track and chains are wound around them, fixing the roughening assembly to the chain. A motor drives the sprockets to rotate, thus driving the roughening assembly to rise and fall on the track. The motor can be a self-locking motor, which locks itself after the height of the roughening assembly is adjusted to prevent height changes during roughening.

[0036] like Figures 2 to 8As shown, the chiseling assembly of this invention includes a chiseling head 6 and an adjustment structure for adjusting the orientation of the chiseling head 6. By setting the adjustment structure, the repair equipment can flexibly adjust the orientation of the chiseling head 6 according to the specific location of the surface to be repaired (such as the top surface, side wall, or ground). Combined with the movable chassis 4 and lifting mechanism 5, this facilitates manual operation of the repair equipment for chiseling, expands the working space of the chiseling assembly, and effectively reduces the labor intensity of manual labor. The adjustment structure includes a mounting base 25 and a connecting plate 26 slidably mounted on a track. Two pins 27 are symmetrically fixed on both sides of the housing 9 of the chiseling head 6. The pins 27 are rotatably mounted on the mounting base 25 and pass through the connecting plate 26. The connecting plate 26 is fixedly connected to the housing 9 by bolts or rivets. A limiting hole 28 is provided on the connecting plate 26. Three positioning holes 29 are provided on both sides of the mounting base 25 at different positions. The three positioning holes 29 correspond to the upward, downward, and horizontal chiseling states. When the limiting hole 28 is aligned with any of the positioning holes 29, the operator can use the positioning pin to pass through the limiting hole 28 and the positioning hole 29 to secure the chisel head 6 in the desired orientation.

[0037] The chisel head 6 is the core of this equipment, comprising a housing 9. A mounting plate 10 is fixed to the front end of the housing 9, and the mounting plate 10 has five mounting holes arranged similarly to the five-bamboo tiles in mahjong. Each mounting hole contains a linear bearing. Five movable chisels 8 are slidably mounted in the five linear bearings. The chisel head 6 also has multiple spray nozzles 7. These nozzles 7 are connected to a high-pressure water supply system and can spray high-pressure water. The movable chisels 8 are driven by a power mechanism to reciprocate and chisel the concrete base layer 1. The linear bearings ensure the smoothness of the reciprocating motion of the movable chisels 8. A counterweight plate 11 is fixed to the front end of the movable chisels 8, and multiple chisel tips 12 are fixed on the counterweight plate 11. The chisel tips 12 are used to directly impact the concrete surface.

[0038] like Figures 5 to 7As shown, the power mechanism provides intermittent impact force to the movable hammer 8, specifically including a pneumatic pipeline 15, five cylinders 13, and five return springs 16. A limiting plate 14 parallel to the mounting plate 10 is fixed inside the housing 9. The cylinders 13 are fixedly mounted on the limiting plate 14 and correspond to the positions of the five mounting holes. A piston is fixed to the end of each of the five movable hammers 8, and the five pistons are slidably and sealingly installed in the five cylinders 13. The pneumatic pipeline 15 includes a main air inlet pipe and five branch air pipes. The five branch air pipes are connected to the inner cavities of the five cylinders 13, and the main air inlet pipe is connected to an external high-pressure air supply device. During operation, the external high-pressure air supply device intermittently supplies high-pressure air to the five branch air pipes through the main air supply pipe. After the high-pressure air enters the cylinder 13, it drives the pistons, causing the movable hammers 8 to move forward and impact the concrete base layer 1. Simultaneously, a limiting ring 17 is fixed on the movable hammer 8 between the limiting plate 14 and the mounting plate 10. A return spring 16 is sleeved on the movable hammer 8 between the limiting ring 17 and the mounting plate 10. When the high-pressure air supply stops, the air pressure in the cylinder 13 drops instantaneously, and the return spring 16 pushes the movable hammer 8 to return to its original position quickly, achieving reciprocating chiseling. A two-position three-way solenoid valve can be connected between the main air inlet pipe and the high-pressure air supply equipment to intermittently pressurize the branch air pipes.

[0039] The nozzle 7 and the movable pick 8 are at a certain angle (between 30° and 60°). When the nozzle 7 sprays high-pressure water, the high-pressure water impacts the concrete surface that has been chiseled by the tip 12 of the movable pick 8 at a certain angle. This produces a significant synergistic effect. As the movable pick 8 reciprocates and chisels the concrete surface, cracks and loose blocks will form on the concrete surface. At this time, the high-pressure water jet from the nozzle 7 enters the cracks and creates a water wedge effect, which can quickly peel off the loose blocks, thereby significantly improving the roughening and cleaning efficiency.

[0040] Example 3: This embodiment further improves the working method of the spray nozzle 7 based on embodiment 2.

[0041] To ensure that the high-pressure water jet from the nozzles 7 can more comprehensively cover the chiseled surface, this embodiment features four pipes 18 rotatably mounted on the mounting plate 10 via bearings. One end of each pipe 18, located inside the housing 9, is connected to a rotary joint 19, while the other end extends out of the housing 9 and is fitted with two nozzles 7. The rotary joint 19 is connected to an external water supply system via a water pipe, ensuring continued transmission of the high-pressure water jet as the pipes 18 rotate. When the pipes 18 rotate, they cause the nozzles 7 to rotate as well, allowing the high-pressure water jet from the nozzles 7 to rotate and impact the concrete chiseled by the multiple movable picks 8. Compared to a fixed jet, this rotating jet has a dynamically changing impact trajectory, a wider coverage area, and can better coordinate with the multiple movable picks 8 to more effectively clean irregular concrete surfaces.

[0042] To achieve the rotation of the aforementioned tubes 18, this invention incorporates a drive mechanism within the housing 9. First, sprockets 20 are fixed to each of the four tubes 18 within the housing 9. A chain 21 is wound around each of these four sprockets 20, allowing the four tubes 18 to rotate synchronously under the action of the chain 21 and sprockets 20. A reduction motor 22 is also fixed within the housing 9. A smaller diameter first gear 23 is fixed to the output shaft of the reduction motor 22, while a larger diameter second gear 24, meshing with the first gear 23, is fixed to one of the tubes 18. During operation, the reduction motor 22 drives the first gear 23 to rotate, which in turn drives the second gear 24 and the corresponding tube 18 to rotate. Through the transmission between the chain 21 and sprockets 20, all tubes 18 are driven to rotate synchronously, enabling all nozzles 7 to rotate at a certain speed and spray high-pressure water, thus expanding the flushing range.

[0043] Finally, considering the extremely harsh environment of the chiseling operation, to protect the precision linear bearings and power mechanism inside the equipment from dust corrosion, this embodiment features a dustproof ring on the side of the chisel head near the mounting hole of the movable chisel 8. The dustproof ring is densely packed with dust-blocking bristles and rubber nozzles. During the reciprocating motion of the movable chisel 8, the dust-blocking bristles and rubber nozzles remain attached to the surface of the movable chisel 8, scraping away and preventing concrete dust from entering the housing 9, significantly extending the maintenance-free cycle and overall service life of the equipment. To prevent high-pressure water from splashing everywhere, a splash guard 30 is also fixed to the housing 9.

[0044] Obviously, those skilled in the art can make various modifications and variations to this invention without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this invention and their equivalents, this invention also intends to include these modifications and variations.

Claims

1. A repair process for concrete bulges, bursts, and corrosion, characterized in that, Includes the following steps: Step 1: Remove the putty layer from the surface of the concrete component to be repaired until the concrete base layer is exposed; Step 2: Inspect the concrete base for bulges, and remove loose concrete by chiseling away the bulges. Step 3: Roughen the surface of the concrete base layer, wash the concrete base layer surface with a high-pressure water jet until the structural surface is exposed and remove any burst points; Step 4: Spray or apply polymer-modified cement mortar to the bulging areas after chiseling to repair the chiseled pits; Step 5: Spray polymer-modified cement mortar onto the repaired concrete base surface, press in alkali-resistant fiberglass mesh and smooth it out; Step 6: Perform maintenance for no less than 7 days.

2. The repair process for concrete bulges, bursts, and corrosion as described in claim 1, characterized in that, In step three, when using a chiseling device to roughen the concrete, high-pressure water jets are applied to the chiseling area during the chiseling process to accelerate the peeling of loose concrete. The chiseling depth is 1mm-5mm.

3. The repair process for concrete bulges, bursts, and corrosion as described in claim 1, characterized in that, Between steps four and five, stainless steel wire mesh is fully hung on the surface of the concrete base layer, and the stainless steel wire mesh is fixed in a staggered pattern using nails to form an isolation and restraint layer.

4. A repair device for repairing concrete bulges, bursts, and rust, characterized in that, It includes a mobile chassis and a chiseling assembly, wherein the mobile chassis is provided with a lifting mechanism for driving the chiseling assembly to rise and fall. The chiseling assembly includes a chisel head and an adjustment structure for adjusting the orientation of the chisel head. The chisel head is equipped with multiple spray nozzles and multiple movable pins. The movable pins are slidably mounted on the chisel head and driven by a power mechanism to achieve reciprocating movement. The spray nozzles and the movable pins are at a certain angle. The spray nozzles are connected to an external water supply device for spraying high-pressure water jets. The high-pressure water jets impact the concrete surface chiseled by the movable pins at a certain angle.

5. The repair equipment for repairing concrete bulges, bursts, and corrosion as described in claim 4, characterized in that, The chisel head includes a housing, a mounting plate is fixed to the front end of the housing, a plurality of mounting holes are provided on the mounting plate, a linear bearing is provided in the mounting holes, the movable chisel is inserted in the linear bearing, a counterweight plate is fixed to the front end of the movable chisel, and a plurality of chisel tips are fixed on the counterweight plate.

6. The repair equipment for repairing concrete bulges, bursts, and corrosion as described in claim 5, characterized in that, The power mechanism includes: Multiple cylinders, with a limit plate fixed inside the housing, the cylinders fixed on the limit plate, and pistons fixed at the ends of multiple movable needles, the pistons corresponding one-to-one with the multiple cylinders and slidably and sealed in the corresponding cylinders; The pneumatic pipeline is connected to the inner cavity of multiple cylinders and is connected to an external air supply device to intermittently deliver high-pressure air into the cylinders to drive piston displacement.

7. The repair equipment for repairing concrete bulges, bursts, and corrosion as described in claim 6, characterized in that, The power mechanism also includes a return spring. A limit ring is fixed on the movable pin between the limit plate and the mounting plate. The return spring is sleeved on the movable pin between the limit ring and the mounting plate.

8. The repair equipment for repairing concrete bulges, bursts, and corrosion as described in claim 5, characterized in that, Multiple pipes are rotatably mounted on the mounting plate. One end of each pipe is connected to a rotary joint inside the housing, and the other end extends out of the housing and is connected to a spray nozzle. The rotary joint is connected to an external water supply device. When the pipe rotates, it drives the spray nozzle to rotate, causing the high-pressure water jet from the spray nozzle to impact the concrete that has been chiseled by multiple movable picks.

9. The repair equipment for repairing concrete bulges, bursts, and corrosion as described in claim 8, characterized in that, Each of the multiple tubes inside the housing is fixed with a sprocket, and a chain is wound around the multiple sprockets. A geared motor is fixed inside the housing, and a first gear is fixed on the output shaft of the geared motor. A second gear that meshes with the first gear is fixed on one of the tubes.

10. The repair equipment for repairing concrete bulges, bursts, and corrosion as described in claim 4, characterized in that, The adjustment structure includes a mounting base and a connecting plate. A pin is fixed on the housing. The pin is rotatably mounted on the mounting base and passes through the connecting plate. The connecting plate is fixedly connected to the housing and has a limiting hole. The mounting base has three positioning holes. When the limiting hole is aligned with one of the positioning holes, the positioning pin passes through the limiting hole and the positioning hole to fix the chisel head.

Images