Mass concrete crack repairing device

Abstract

A mass concrete crack repairing device relates to the technical field of concrete and comprises a trolley, a storage barrel is arranged on the trolley and comprises an inner barrel, an annular outer barrel is formed on the outer side of the inner barrel, a sealing cover is mounted on the annular outer barrel and provided with a feeding port and a high-pressure spraying mechanism, and the high-pressure spraying mechanism is connected with the feeding port. A cover plate is arranged at the top of the inner barrel, a material pushing mechanism is installed on the cover plate, a blocking guide mechanism is arranged at the bottom of the trolley, and the blocking guide mechanism is matched with a discharging port in the bottom of the inner barrel. Dynamic plugging of the discharging port and accurate pushing of slurry can be achieved, meanwhile, the high-pressure spraying mechanism is adopted to be matched with the rotating bristles to achieve the self-cleaning function, the stability of the device in the inclined environment is ensured through the leveling assembly, and the device has the advantages that slurry leakage is effectively prevented, the device adapts to the complex working environment, and cleaning and maintenance are convenient.

Description

Technical Field

[0001] The present invention relates to the technical field of concrete, in particular to a device for repairing cracks in large-volume concrete. Background Art

[0002] During the construction and maintenance of concrete structures, crack repair is a common construction step. Traditional concrete crack repair devices have many technical defects: first, the concrete remaining after the device is used is difficult to clean thoroughly, and long-term accumulation will affect the normal operation of the equipment; second, existing devices such as the technical solution disclosed in CN218541657U have a serious risk of leakage, and their discharge ports lack an effective sealing mechanism, which makes the slurry easy to leak during the pouring process. More prominently, the cleaning and maintenance of existing equipment is extremely inconvenient, and core components such as hydraulic rods and thrust blocks need to be disassembled for manual cleaning, which is not only time-consuming and labor-intensive, but also difficult to ensure the cleaning effect.

[0003] Furthermore, when operating under unusual construction environments, such as bridge bottoms and tunnel sidewalls, traditional fixed storage structures are unable to adapt to inclined or narrow spaces, leading to uneven slurry distribution and poor pushing performance. Especially on inclined working surfaces, clean water struggles to evenly cover the equipment's inner walls, severely impacting cleaning effectiveness. The root cause of these issues lies in the fact that existing device designs overly focus on flat-surface operation and fail to fully consider the practical demands of complex terrain. Addressing these issues, existing technologies urgently need improvement. Summary of the Invention

[0004] The purpose of the present invention is to solve the problems raised in the above background technology, and then proposes a large-volume concrete crack repair device.

[0005] The technical solution adopted by the present invention to solve the technical problem is: A large-volume concrete crack repair device includes a trolley with a storage barrel on the trolley. The storage barrel includes an inner barrel, an annular outer barrel is formed on the outside of the inner barrel, a sealing cover is installed on the annular outer barrel, a feed port and a high-pressure spray mechanism are provided on the sealing cover, a cover plate is provided on the top of the inner barrel, a pushing mechanism is installed on the cover plate, and a blocking guide mechanism is provided at the bottom of the trolley, which cooperates with the discharge port at the bottom of the inner barrel.

[0006] Furthermore, the height of the inner barrel is higher than the height of the annular outer barrel.

[0007] Furthermore, the cover plate includes a sleeve ring that matches the outer wall of the inner barrel. A sealing ring is installed on the outer side of the sleeve ring, and a mounting ring that matches the outer wall of the outer barrel is formed on the sealing ring.

[0008] Furthermore, a buckle is provided between the cover plate and the annular outer barrel.

[0009] Furthermore, the inner barrel wall divides the storage barrel into an inner storage cavity and an outer storage cavity, and a connecting hole connecting the inner storage cavity and the outer storage cavity is formed at the bottom of the inner barrel wall.

[0010] Furthermore, the trolley includes a placement plate, four universal wheels are provided at the bottom of the placement plate, and a handle is provided on one side of the placement plate.

[0011] Furthermore, the pushing mechanism includes a vertical plate, which is fixedly connected to the cover plate, and a main electric cylinder is fixedly connected to the vertical plate. The telescopic rod of the main electric cylinder passes through the cover plate and is connected to a pushing plate, and the pushing plate can slide up and down along the inner wall of the inner barrel.

[0012] The solution is refined, and a central hole is formed on the cover plate to accommodate the telescopic rod of the master electric cylinder.

[0013] Furthermore, a conical guide hopper is formed at the bottom of the inner barrel, a discharge port is provided at the bottom of the conical guide hopper, and a conical pressing block matched with the conical guide hopper is formed at the bottom of the push plate.

[0014] Furthermore, a guide sleeve is provided on the vertical plate, a guide rod is slidably fitted in the guide sleeve, and the end of the guide rod is connected to the pusher plate.

[0015] According to a refinement of the solution, a through hole is formed on the cover plate to accommodate the guide rod passing through.

[0016] Furthermore, the high-pressure spray mechanism includes a water pipe, the bottom of which is connected to a water distribution plate, and the water distribution plate is provided with multiple high-pressure nozzles. An external thread is formed on the outside of the water pipe, and a water pipe mounting hole is formed on the cover to accommodate the water pipe. The water pipe passes from the bottom of the cover to the top of the cover and is locked and fixed by a plastic knob.

[0017] Furthermore, a first rotating shaft is provided at the bottom of the water diversion tray, a rotating rod is rotatably connected to the first rotating shaft, a plurality of bristles are arranged in a circular array on the rotating rod, and the high-pressure nozzle sprays obliquely downward and the sprayed high-pressure water flow can drive the rotating rod to rotate.

[0018] Furthermore, the spraying direction is the tangential direction of the rotating rod, and four high-pressure nozzles are provided. The water flow is sprayed onto the bristles, and the bristles are subjected to the force to drive the rotating rod to rotate.

[0019] Furthermore, the blocking guide mechanism includes two support plates, the two support plates are fixedly connected to the bottom of the storage barrel, a second rotating shaft is provided between the two support plates, a guide groove is rotatably connected to the second rotating shaft, a rear plate is formed on the rear side of the guide groove, an auxiliary electric cylinder is rotatably connected to the bottom of the storage barrel, and the telescopic rod of the auxiliary electric cylinder is rotatably connected to the rear plate.

[0020] Furthermore, the auxiliary electric cylinder can drive the guide groove to rotate around the second rotation axis so that the bottom plate of the guide groove abuts against the discharge port, so as to block the discharge port.

[0021] Furthermore, a vertical frame is formed on the placement plate, a leveling assembly is mounted on the vertical frame, and a storage bucket is mounted on the leveling assembly. The adjustment assembly includes an outer ring, two outer connecting shafts are disposed within the outer ring, an inner ring is rotatably connected between the two outer connecting shafts, two inner connecting shafts are disposed within the inner ring, and the storage bucket is mounted between the two inner connecting shafts.

[0022] Compared with the existing technology, the beneficial effects of the present invention are: the present invention realizes dynamic sealing of the discharge port and precise pushing of slurry through the coordinated design of the trolley, storage barrel, pushing mechanism and sealing guide mechanism, and at the same time adopts a high-pressure spray mechanism in combination with rotating bristles to realize self-cleaning function, and the leveling component ensures the stability of the device in an inclined environment. It has the advantages of effectively preventing slurry leakage, adapting to complex working environments, and facilitating cleaning and maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural schematic diagram of the present invention; Figure 2 This is a structural diagram of the first embodiment of the storage barrel; Figure 3 This is a structural diagram of a second embodiment of a storage barrel; Figure 4 This is a structural diagram when a cleaning brush is installed in the storage barrel; Figure 5 This is a schematic diagram of the principle of the high-pressure nozzle driving the cleaning brush to rotate; Figure 6 for Figure 1 A partial enlarged view of point A in the middle; Figure 7 This is a structural diagram of a trolley with a leveling assembly installed; Figure 8 Schematic diagram of the structure of the leveling component. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention. The present invention is further described in conjunction with the drawings and embodiments: Existing concrete crack repair systems commonly suffer from slurry leakage, difficulty cleaning and maintenance, and insufficient terrain adaptability. Traditional equipment utilizes an open discharge port design that cannot be effectively sealed when not in operation, leading to accidental slurry leakage. Cleaning requires disassembly of hydraulic components, which is time-consuming and labor-intensive. Fixed storage structures struggle with narrow, inclined environments like bridge bottoms and tunnel sidewalls. Uneven slurry distribution compromises construction quality, and the cleaning water flow fails to reach blind spots on the inner wall. To address these issues, we first proposed a solution for dynamically blocking the discharge port to address the risk of leakage. Secondly, to reduce cleaning difficulty, we explored a collaborative cleaning method combining mechanical pushing and high-pressure flushing. Finally, to address terrain constraints, we designed a mobile carrier and adjustable storage structure. By splitting the storage function into internal and external chambers, we achieve physical isolation between slurry storage and pushing. Combined with a rotatable guide mechanism to control the discharge state, this creates a complete leak prevention system. like Figures 1-6 As shown, a large-volume concrete crack repair device includes a trolley 1, which is provided with a storage barrel 2. The storage barrel includes an inner barrel 22, an annular outer barrel 21 is formed on the outside of the inner barrel, and a cover 3 is installed on the annular outer barrel. The cover is provided with a feed port 31 and a high-pressure spray mechanism. The top of the inner barrel is provided with a cover plate 23, and a pushing mechanism is installed on the cover plate. The bottom of the trolley is provided with a blocking guide mechanism, and the blocking guide mechanism cooperates with the discharge port 222 at the bottom of the inner barrel.

[0025] A trolley is a wheeled platform, typically constructed with a steel frame and rubber tires, designed for flexible mobility in complex terrain. A storage barrel is a dual-chamber container: an inner barrel temporarily stores the slurry to be pushed, and an annular outer barrel stores spare slurry. A connecting hole between the two forms a material replenishment channel. A cap is a sealing assembly covering the top of the annular outer barrel, secured with a snap-on connection. The feed inlet is located at the edge of the cap for injecting slurry. A high-pressure spray mechanism is a cleaning system consisting of a water distribution tray and multi-directional nozzles, connected to an external water source via a removable water pipe to flush the inner wall of the storage barrel. The pusher mechanism is a vertical motion assembly driven by an electric cylinder. The pusher plate maintains sliding contact with the inner wall of the inner barrel, pushing the slurry out of the discharge port. The blocking and guide mechanism is a rotatable mechanical baffle, controlled by an electric cylinder to open and close the discharge channel. Specifically, the storage barrel features a double-layer structure with inner and outer barrels nested inside and outside, forming an independent chamber between the inner and outer barrels. During operation, the slurry is injected into the outer barrel through the feed port and then enters the inner barrel through the connecting hole for temporary storage. When the push mechanism is activated, the push plate presses down along the inner wall of the inner barrel, forcing the slurry through the conical guide hopper and out the discharge port. The sealing guide mechanism remains closed when not in operation to prevent accidental slurry leakage. During the cleaning phase, a high-pressure spray mechanism sprays water into the storage barrel, and the push plate reciprocates to scrape away residue, and wastewater is discharged through the bottom of the outer barrel.

[0026] Compared to existing technologies, traditional devices lack dynamic sealing mechanisms, leading to the risk of leakage. This solution utilizes a rotatable guide groove to precisely open and close the discharge port. Existing equipment requires disassembly of hydraulic components for cleaning, while this solution utilizes the synergy of high-pressure water flow and mechanical pushing to achieve disassembly-free cleaning.

[0027] Through the above technical solution, this application effectively prevents slurry leakage during repair operations, reduces equipment maintenance complexity, and improves construction stability in complex terrain. The push mechanism and high-pressure spray combine to achieve rapid cleaning, the blocking and guiding mechanism ensures sealing when not in operation, the internal and external dual-barrel structure extends continuous operation time, and the mobile design expands the device's application scenarios.

[0028] The solution is refined, and the height of the inner barrel is higher than the height of the annular outer barrel.

[0029] Furthermore, the cover plate includes a collar 33, with a sealing ring 32 mounted on the outside of the collar. The sealing ring is formed with a mounting ring 34 that cooperates with the outer wall of the outer barrel. People can push the cover plate to rotate around the inner barrel. The collar cooperates with the outer wall of the inner barrel.

[0030] The inner barrel's height being higher than the annular outer barrel means that the inner barrel's top extends above the annular outer barrel's top. This can be achieved by having the inner barrel's height be 100-150 mm higher than the annular outer barrel. The collar refers to an annular structure surrounding the outer wall of the inner barrel, typically a combination of a metal ring and a rubber sealing ring, used to form a sliding seal between the cover and the outer wall of the inner barrel. The blocking ring is a ring secured to the outside of the collar, preventing slurry leakage from the outer barrel when the device is tilted. The mounting ring is a ring formed outside the blocking ring, typically machined to mate with the outer wall of the outer barrel. Compared to existing technologies, Chinese patent CN218541657U lacks a height difference between the inner and outer barrels and a cover plate sealing structure, resulting in slurry leakage from the gap between the push barrel and the storage barrel. Furthermore, the storage chamber cannot be sealed in tilted environments. This solution, through a composite sealing structure of a collar and a blocking ring, solves the slurry leakage problem in complex terrain and utilizes the pressure differential effect to improve discharge efficiency.

[0031] Through the above technical solution, this application achieves dynamic sealing of the storage chamber in tilted working environments, preventing slurry from remaining in the gap between the inner and outer barrels, which makes cleaning difficult. The pressure difference created by the height design of the inner barrel effectively shortens the slurry emptying time and reduces the amount of residual material after operation.

[0032] Furthermore, a buckle 4 is provided between the cover plate and the annular outer barrel. The buckle is a prior art and will not be explained in detail.

[0033] Furthermore, the inner barrel wall divides the storage barrel into an inner storage cavity S1 and an outer storage cavity S2, and a connecting hole 221 connecting the inner storage cavity S1 and the outer storage cavity S2 is formed at the bottom of the inner barrel wall.

[0034] The inner barrel wall refers to a vertical partition structure located inside the storage barrel and coaxially arranged with the annular outer barrel. It can be welded together using stainless steel or engineering plastics, and serves to separate the storage barrel into two independent inner and outer chambers. The communication holes refer to through-holes provided in the bottom area of ​​the inner barrel wall. They can be circular, elliptical, or rectangular in shape, and can range from 2 to 6 in number, with a diameter ranging from 5 to 20 mm, for example. These holes facilitate the flow of slurry between the inner and outer storage chambers. Specifically, when the device is located on an inclined or complex terrain, the inner and outer storage chambers achieve slurry pressure balance through a connecting hole at the bottom. During the pushing process, the slurry in the inner chamber is pushed out first, while the slurry in the outer chamber is continuously replenished to the inner chamber through the connecting hole, preventing slurry from accumulating in the outer chamber due to gravity and causing uneven pushing. During cleaning, water flows into the inner and outer chambers separately, forming a circulating flushing path through the connecting hole to cover all inner wall areas. Compared with the existing technology, the existing device does not have an inner and outer cavity separation structure, and the slurry is easy to gather on one side when tilted. However, this solution maintains dynamic uniformity in the slurry distribution through the pressure balance of the inner and outer cavities and the connecting hole feeding mechanism. At the same time, the dual-cavity structure provides a directional flushing channel for clean water flow. Through the above technical solution, the present application solves the problem of decreased pushing efficiency caused by uneven slurry distribution under inclined terrain, while enabling the clean water flow to synchronously cover the inner and outer cavity walls, reducing manual cleaning dead corners.

[0035] Furthermore, the trolley includes a placement plate 11, four universal wheels 12 are provided at the bottom of the placement plate, and a handle 13 is provided on one side of the placement plate.

[0036] In at least one embodiment, the pushing mechanism includes a vertical plate 51, which is fixedly connected to the cover plate, and a main electric cylinder 52 is fixedly connected to the vertical plate. The telescopic rod of the main electric cylinder passes through the cover plate and is connected to a pushing plate 55, and the pushing plate can slide up and down along the inner wall of the inner barrel.

[0037] In a more detailed solution, a central hole 231 is formed on the cover plate to accommodate the telescopic rod of the master electric cylinder.

[0038] Among them, the vertical plate refers to a supporting structure arranged perpendicular to the cover plate, which can be specifically welded to the cover plate with a metal plate or bolted to provide a rigid mounting base for the main electric cylinder. The main electric cylinder refers to a linear actuator driven by electricity, which can be specifically a servo electric cylinder with a stroke range matching the height of the inner barrel, used to drive the push plate to move vertically in the inner barrel. The push plate refers to a scraper structure that slides with the inner wall of the inner barrel, which can be specifically a circular metal plate with a rubber sealing strip on the edge, which is used to scrape off residues attached to the inner barrel wall during the up and down movement. The center hole refers to a through hole opened in the center of the cover plate, which can be specifically a circular hole with a diameter slightly larger than the outer diameter of the telescopic rod, which is used to ensure that the motion trajectory of the telescopic rod is stable when it passes vertically through the cover plate. Specifically, the main electric cylinder is fixed to the top of the cover plate via a vertical plate. Its telescopic rod passes through the center hole of the cover plate and is rigidly connected to the pusher plate. When the inner barrel needs to be cleaned, the main electric cylinder drives the telescopic rod, which moves the pusher plate downward along the inner wall of the inner barrel. The edge of the pusher plate contacts the inner wall and scrapes away any residue. Once the pusher plate reaches the bottom of the inner barrel, the main electric cylinder reverses its motion, driving the pusher plate upward and back to its original position, completing the cleaning cycle. The center hole in the cover plate guides the telescopic rod, preventing the pusher plate from drifting during movement. Compared with the existing technology, existing devices such as CN218541657U require manual disassembly of the hydraulic rod and the propulsion block to clean the push barrel. However, the present application fixes the main electric cylinder to the outside of the cover plate and directly connects the push plate to the telescopic rod, so that the inner wall scraping operation can be completed by electric drive without removing any components during the cleaning process.

[0039] Through the above technical solution, the present application realizes the automatic up and down movement of the push plate in the inner barrel, directly scraping off the residue, avoiding the tedious steps of manual disassembly of hydraulic drive components and cleaning tools, significantly shortening the equipment maintenance time, and ensuring the integrity of the equipment structure during the cleaning process.

[0040] Further, such as Figure 3 As shown, a conical guide hopper 57 is formed at the bottom of the inner barrel, and a discharge port 222 is provided at the bottom of the conical guide hopper. In coordination therewith, a conical pressing block 56 is formed at the bottom of the push plate to cooperate with the conical guide hopper.

[0041] The conical hopper is a funnel-shaped structure formed by the gradual contraction of the bottom of the inner barrel. This structure can be achieved by welding or stamping steel plates, and the angle of inclination of the cone can be adjusted according to the fluidity of the material. The geometric shape of the conical hopper guides the slurry to the discharge port, reducing the accumulation of residual material at the bottom of the barrel. The discharge port refers to the circular or rectangular opening at the bottom of the conical hopper, which forms a directional discharge channel to ensure the slurry is discharged in a targeted manner under the action of gravity or external force. The conical pressure block is an inverted cone-shaped structure fixed to the bottom of the push plate, and can be made of rubber or metal. The outer contour of the conical pressure block matches the inner wall shape of the conical hopper. When the push plate descends, it fits tightly against the conical surface of the hopper, achieving the dual functions of forced extrusion of material and scraping off residual material. Specifically, as the push plate moves downward along the inner wall of the inner barrel, the conical pressure block gradually contacts the inner wall of the conical hopper, forming a seal. As the push plate continues to press downward, the conical pressure block squeezes the material from the bottom of the hopper while scraping away any residual slurry adhering to the inner wall of the conical hopper. When the push plate returns and rises, the conical pressure block separates from the conical surface of the hopper. Residual material then slides down the conical surface due to gravity to the discharge port, avoiding any blind spots in cleaning. In inclined or narrow construction environments, the directional flow-guiding properties of the conical hopper reduce uneven slurry distribution and ensure uniform material extrusion by the push plate. Furthermore, a guide sleeve 53 is provided on the vertical plate, and a guide rod 54 is slidably fitted in the guide sleeve, and the end of the guide rod is connected to the pusher plate.

[0042] According to a refinement of the solution, a through hole is formed on the cover plate to accommodate the guide rod passing through.

[0043] The guide sleeve is a cylindrical metal component fixed to the vertical plate, specifically a copper sleeve with a smooth inner wall, used to limit the motion trajectory of the guide rod. The guide rod is a rigid rod that forms a sliding fit with the guide sleeve, specifically a chrome-plated steel round rod, its end secured to the pusher plate via a threaded connection. The cover plate through-hole is a circular through-hole cut into the center of the cover plate, specifically a hole structure that matches the diameter of the guide rod, providing a vertical motion channel for the guide rod. Specifically, the sliding fit between the guide sleeve and the guide rod forms a rigid constraint. When the master electric cylinder drives the pusher plate in vertical motion, the guide rod moves along a fixed trajectory within the guide sleeve. The pusher plate is constrained by the biaxial linkage, limiting its radial excursion. The through-holes in the cover plate allow the guide rod to pass through, preventing interference with the guide rod's movement. Through a two-point positioning mechanism, the pusher plate's trajectory is forcibly confined to the vertical. The driving torque of the master electric cylinder is evenly transmitted to the pusher plate, eliminating torque imbalances caused by single-point drive. In at least one embodiment, the high-pressure spray mechanism includes a water pipe 61, the bottom of the water pipe is connected to a water distribution plate 63, the water distribution plate is provided with a plurality of high-pressure nozzles 64, an external thread is formed on the outside of the water pipe, and a water pipe mounting hole for accommodating the water pipe is formed on the cover. The water pipe passes from the bottom of the cover to the top of the cover and is locked and fixed by a plastic knob 62.

[0044] Among them, the water distribution plate refers to the disc-shaped diversion structure connected to the end of the water pipe. Specifically, it can be realized by a metal plate with an annular guide groove, which is used to evenly distribute the single-channel water flow to multiple injection points. A high-pressure nozzle refers to a nozzle with a specific injection aperture, such as a conical outlet structure made of brass material, which is used to form a high-pressure directional water flow. The external thread refers to the threaded structure processed on the outside of the water pipe. Specifically, metric threads or pipe threads can be used, which are used to cooperate with the threads in the cover mounting hole to form an adjustable connection. A plastic knob refers to a tightening component with an internal thread, such as injection molding of nylon material, which achieves axial fixation and sealing of the water pipe by applying pressure through rotation. Specifically, after the water pipe passes through the mounting hole of the cover, it forms a rotatable connection with the cover through an external thread. The water distribution plate is located below the cover and maintains vertical communication with the water pipe. Multiple high-pressure nozzles are distributed circumferentially along the water distribution plate. When the high-pressure water flow enters the water pipe, it is diverted to each nozzle through the water distribution plate to form a multi-directional spray. The plastic knob is tightened at the upper position where the water pipe passes through the cover, and the water pipe and the cover are kept fixed by the thread engagement pressure. This structure allows the operator to rotate the water pipe to adjust the orientation of the water distribution plate so that the spray direction of the nozzle covers different areas of the inner wall of the storage barrel.

[0045] Further, such as Figure 4 As shown, a first rotating shaft 65 is provided at the bottom of the water diversion tray, and a rotating rod 66 is rotatably connected to the first rotating shaft. A plurality of bristles are arranged in a circular array on the rotating rod. In conjunction with the rotating rod, the high-pressure nozzle sprays obliquely downward and the sprayed high-pressure water flow can drive the rotating rod to rotate, thereby driving the cleaning of the bristles and the inner wall of the outer barrel and the outer wall of the inner barrel.

[0046] The spraying direction is the tangential direction of the rotating rod. Four high-pressure nozzles are provided. The water flow is sprayed onto the bristles, and the bristles are subjected to force to drive the rotating rod to rotate.

[0047] Among them, the rotating shaft refers to the cylindrical metal component that supports the rotating rod to achieve rotational motion. Specifically, it can be implemented by a stainless steel bearing and a sleeve, which is used to transmit the rotational torque generated by the high-pressure water flow. The rotating rod refers to the rod-shaped structure on which the bristles are installed. Specifically, it can be implemented by a hollow aluminum alloy tube body, and the bristle coverage area is expanded by a circular array. The bristles refer to the nylon fiber bundles that clean the inner wall of the storage barrel. Specifically, they can be fixed to the surface of the rotating rod in a spiral arrangement, and a dynamic friction cleaning surface is formed through rotational motion. The high-pressure nozzle refers to the nozzle structure that produces a directional water flow. Specifically, it can be implemented by a tapered water outlet with a 30° inclination angle design. By adjusting the spray angle, the impact direction of the water flow is consistent with the tangent direction of the rotating rod. Specifically, when high-pressure water jets downward obliquely from four symmetrically distributed nozzles, the water impacts the bristles along the tangent direction of the rotating rod, creating a continuous rotational driving force. Supported by the rotating shaft, the rotating rod rotates around its axis, driving the annular array of bristles to sweep across the inner surface of the storage barrel. During rotation, the bristles come into contact and rub against the residual slurry on the inner wall, while the high-pressure water jet directly flushes away the attachments, creating a synergistic cleaning effect of mechanical friction and hydraulic scouring. This rotational motion requires no external power input and achieves self-driven cleaning entirely through the conversion of fluid kinetic energy into mechanical energy. It is particularly suitable for cleaning the inner walls of storage barrels in inclined or narrow environments. Compared with existing technologies, traditional cleaning methods rely on manual disassembly of components and scrubbing, which cannot be effectively implemented in complex construction environments. This solution uses a hydraulically driven rotating brush structure to achieve full coverage cleaning of the inner wall of the storage tank without disassembling the device, while simultaneously utilizing the energy of the high-pressure water flow to achieve dual functions of driving and flushing. Through the above technical solution, this application solves the problem of incomplete cleaning caused by the inability of high-pressure water flow to effectively cover the inner wall of the storage barrel. It can still maintain a stable rotary cleaning effect in inclined or narrow environments, significantly reducing slurry residue. The combination of rotating bristles and directional water flow creates a dynamic cleaning path, avoiding the cleaning blind spots of traditional fixed nozzles and improving the adaptability of the device in different terrain conditions.

[0048] In at least one embodiment, the blocking guide mechanism includes two support plates 71, which are fixedly connected to the bottom of the storage barrel. A second rotating shaft 72 is provided between the two support plates. A guide groove 73 is rotatably connected to the second rotating shaft, and a rear plate 74 is formed on the rear side of the guide groove. An auxiliary electric cylinder 75 is rotatably connected to the bottom of the storage barrel, and the telescopic rod of the auxiliary electric cylinder is rotatably connected to the rear plate.

[0049] The solution is refined, and the auxiliary electric cylinder can drive the guide groove to rotate around the second rotation axis so that the bottom plate 731 of the guide groove abuts against the discharge port, so as to block the discharge port.

[0050] The support plate refers to a plate-like structure used to fix the second rotating shaft and provide rotational support. Specifically, it can be fixed to the bottom of the storage barrel by welding or bolting. Its function is to provide a stable mounting base for the second rotating shaft and ensure the structural rigidity of the guide groove during rotation. The second rotating shaft refers to the shaft connecting the two support plates and serving as the rotation center of the guide groove. Specifically, it can be made of stainless steel and installed with rolling bearings. Its function is to limit the rotational movement of the guide groove to a fixed track to avoid seal failure caused by offset. The guide groove refers to a groove-shaped structure with a bottom plate and side walls. Specifically, it can be an arc-shaped bottom plate and side walls integrally formed. Its function is to form a surface contact seal between the bottom plate and the discharge port through rotation, while guiding the flow direction of the slurry. The auxiliary electric cylinder refers to the power device that drives the rotation of the guide groove. Its function is to convert the linear motion of the telescopic rod into the rotation angle of the guide groove to achieve precise opening and closing control of the discharge port. Specifically, when the auxiliary electric cylinder's telescopic rod retracts, it pushes the rear plate to rotate clockwise about the axis, causing the bottom plate of the guide trough to swing downward and away from the discharge port, allowing the slurry to flow out along the guide trough. When the telescopic rod extends, it pulls the rear plate to rotate counterclockwise, pressing the bottom plate of the guide trough upward against the discharge port to form a seal. During this movement, the coordination of the axis and the support plate ensures that the guide trough rotates only within the set plane, preventing jamming caused by tilting the storage tank. Compared to existing technologies, traditional repair devices use manual valves or fixed sealing plates, which can easily lead to poor sealing due to gravity in inclined environments. This solution, however, utilizes a rotating guide groove driven by an electric cylinder to maintain uniform pressure between the base plate and the discharge port at any angle, and its opening and closing motion is not restricted by the construction environment and space. Existing technologies do not disclose structures that achieve surface sealing through rotational motion, nor do they have automatic sealing control mechanisms for complex terrain. Through the above technical solution, this application can achieve rapid sealing of the discharge port through electric control in inclined environments such as bridge bottoms or tunnel sidewalls, preventing slurry leakage. Compared with traditional vertical lifting valves, the rotary sealing method of the guide groove is more suitable for installation conditions with limited space at the bottom of the storage tank. The closed-loop control characteristics of the auxiliary electric cylinder ensure the repeatability of the sealing action, avoiding the risk of leakage caused by manual operation errors.

[0051] When the device needs to operate in narrow or inclined construction environments, such as crack repair work on bridge bottoms or tunnel sidewalls, existing fixed storage structures and cleaning mechanisms struggle to adapt to these complex terrains. Especially on inclined surfaces, the slurry in the storage tank is unevenly distributed, resulting in poor pushing efficiency. Furthermore, the cleaning water fails to effectively cover the entire interior surface, compromising cleaning effectiveness. The root cause of this problem lies in the fact that the device was designed primarily for flat surface operation and did not fully consider the adaptability requirements of complex terrain.

[0052] In order to solve the operation problem in an inclined environment, a vertical frame 12 is formed on the placement plate, a leveling component 13 is installed on the vertical frame, and a storage bucket is installed on the leveling component.

[0053] The adjustment assembly includes an outer ring 131, two outer connecting shafts 132 are provided in the outer ring, an inner ring 133 is rotatably connected between the two outer connecting shafts, two inner connecting shafts 134 are provided in the inner ring, and a storage barrel is installed between the two inner connecting shafts.

[0054] Among them, the vertical frame refers to a support frame fixed vertically on the placement plate, which can be achieved by welding or bolting, and is used to provide a stable installation base for the leveling assembly. The leveling assembly refers to a mechanical adjustment device composed of an outer ring and an inner ring, which can be made of aluminum alloy castings, and the spatial posture adjustment of the storage barrel is achieved through a multi-axis rotation structure. The outer connecting shaft refers to the rotating shaft arranged on both sides of the outer ring, which can be achieved by a pin structure with ball bearings, allowing the inner ring to rotate around the horizontal axis inside the outer ring. The inner connecting shaft refers to the rotating shaft arranged on both sides of the inner ring, which can be achieved by a pin structure of the same specification as the outer connecting shaft, so that the storage barrel can rotate around an axis perpendicular to the direction of the outer connecting shaft.

[0055] Specifically, when the device is on an inclined working surface, the storage barrel rotates the inner ring around the outer connecting shaft due to its own weight, while adjusting its own longitudinal angle through the inner connecting shaft. The outer ring and the outer connecting shaft constitute the lateral rotational freedom, while the inner ring and the inner connecting shaft constitute the longitudinal rotational freedom. The combination of the two-stage rotating pairs allows the storage barrel to automatically adjust to a horizontal state on any inclined surface. The nested structure of the outer and inner rings limits unnecessary displacement through the connecting shaft, ensuring the overall stability of the device during the leveling process. This mechanical leveling mechanism does not require electrical drive and relies on gravity to adaptively adjust its posture, so that the slurry remains evenly distributed in the storage barrel. At the same time, it ensures the matching accuracy of the push plate and the conical guide hopper to avoid problems with poor discharge caused by tilt.

[0056] Compared to existing technologies, traditional repair devices use fixed storage structures. During tilted operations, slurry accumulation increases pushing resistance, and the cleaning water flow cannot reach the inclined inner wall. This solution uses a dual-axis leveling mechanism to maintain a constant horizontal storage tank, fundamentally eliminating the impact of terrain tilt on slurry distribution and cleaning results. The existing technology requires repeated manual adjustments to the equipment's position, but this solution automatically completes this operation through a mechanical adaptive structure, significantly improving construction efficiency.

[0057] Through the above-mentioned technical solution, this application effectively solves the problem of uneven slurry distribution caused by the tilt of the storage barrel in complex terrain, ensuring that the pusher mechanism can stably output slurry at any operating angle. The dual-axis rotation structure of the leveling component enables the clean water flow to evenly cover the inner wall of the storage barrel, preventing residue from accumulating on one side when tilted. When operating in narrow spaces such as the bottom of a bridge, this mechanical leveling mechanism automatically adapts to the working surface angle without additional operation, significantly improving the quality of crack repair and equipment maintenance efficiency.

[0058] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the above-described embodiments. The above-described embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A large volume concrete crack repair device, characterized in that: It includes a trolley with a storage barrel on it, the storage barrel including an inner barrel, an annular outer barrel formed on the outside of the inner barrel, a sealing cover installed on the annular outer barrel, a feed port and a high-pressure spray mechanism on the sealing cover, a cover plate provided on the top of the inner barrel, a pushing mechanism installed on the cover plate, a blocking guide mechanism provided at the bottom of the trolley, and the blocking guide mechanism cooperates with the discharge port at the bottom of the inner barrel.

2. The large volume concrete crack repairing device according to claim 1, characterized in that: The height of the inner barrel is higher than that of the annular outer barrel.

3. The large volume concrete crack repairing device according to claim 1 or 2, characterized in that: The cover plate includes a sleeve ring that matches the outer wall of the inner barrel. A sealing ring is installed on the outer side of the sleeve ring, and a mounting ring that matches the outer wall of the outer barrel is formed on the sealing ring.

4. The large volume concrete crack repairing device according to claim 3, characterized in that: The inner barrel wall divides the storage barrel into an inner storage cavity and an outer storage cavity, and a connecting hole connecting the inner storage cavity and the outer storage cavity is formed at the bottom of the inner barrel wall.

5. The large volume concrete crack repairing device according to claim 4, characterized in that: The pushing mechanism includes a vertical plate, which is fixedly connected to the cover plate, and a main electric cylinder is fixedly connected to the vertical plate. The telescopic rod of the main electric cylinder passes through the cover plate and is connected to a pushing plate. The pushing plate can slide up and down along the inner wall of the inner barrel. A guide sleeve is also provided on the vertical plate, and a guide rod is slidably fitted in the guide sleeve. The end of the guide rod is connected to the pushing plate.

6. The device for repairing cracks in large-volume concrete according to claim 5, characterized in that: A conical guide hopper is formed at the bottom of the inner barrel, a discharge port is provided at the bottom of the conical guide hopper, and a conical pressing block matched with the conical guide hopper is formed at the bottom of the push plate.

7. The device for repairing cracks in large-volume concrete according to claim 5, characterized in that: The high-pressure spray mechanism includes a water pipe, the bottom of which is connected to a water distribution plate, and a plurality of high-pressure nozzles are provided on the water distribution plate. An external thread is formed on the outer side of the water pipe, and a water pipe mounting hole is formed on the cover to accommodate the water pipe passing through. The water pipe passes from the bottom of the cover to the top of the cover and is locked and fixed by a plastic knob.

8. The device for repairing cracks in large-volume concrete according to claim 7, characterized in that: A first rotating shaft is provided at the bottom of the water diversion tray, a rotating rod is rotatably connected to the first rotating shaft, a plurality of bristles are arranged in a circular array on the rotating rod, and the high-pressure nozzle sprays obliquely downward and the sprayed high-pressure water flow can drive the rotating rod to rotate.

9. The device for repairing cracks in large-volume concrete according to claim 8, characterized in that: The blocking guide mechanism includes two support plates, which are fixedly connected to the bottom of the storage barrel. A second rotating shaft is provided between the two support plates. A guide groove is rotatably connected to the second rotating shaft. A rear plate is formed on the rear side of the guide groove. An auxiliary electric cylinder is rotatably connected to the bottom of the storage barrel, and the telescopic rod of the auxiliary electric cylinder is rotatably connected to the rear plate.

10. The device for repairing cracks in large-volume concrete according to claim 9, characterized in that: The placement plate is formed with a vertical frame, a leveling assembly is mounted on the vertical frame, and a storage bucket is mounted on the leveling assembly. The adjustment assembly includes an outer ring, two outer connecting shafts are disposed within the outer ring, an inner ring is rotatably connected between the two outer connecting shafts, two inner connecting shafts are disposed within the inner ring, and the storage bucket is mounted between the two inner connecting shafts.

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