A biomineralization repair device and method for multi-width concrete cracks

Abstract

The present invention relates to the field of construction technology, and specifically to a multi-width concrete crack biomineralization repair device and method, comprising a vehicle body and a pressure assembly arranged on the vehicle body. The vehicle body is further provided with: a batching box, a mixing barrel, a batching pipe, and a power assembly. The bottom of the batching box is connected to the mixing barrel through the batching pipe. A stirring member is rotatably arranged in the mixing barrel, and the stirring member is connected to the output end of the motor in the power assembly. The bottom of the mixing barrel is connected to a grouting pipe head through a pipe. The grouting pipe head can be adjusted to adapt to different crack widths. The pipe is also connected to the output end of the pressure assembly through a valve. The diameter of the pipe head has multiple adjustment states. For cracks with a width greater than the grouting pipe head, it is adjusted to an outward expansion state, and for cracks with a width less than the grouting pipe head, it is adjusted to a retracted state.

Description

Technical Field

[0001] The present invention relates to the technical field of building construction, and in particular to a device and method for biomineralization repair of multi-width concrete cracks. Background Art

[0002] Concrete components are widely used in civil engineering due to their high strength, readily available materials, strong moldability, and excellent integrity. However, concrete is a typically porous and brittle material. Subject to adverse factors such as temperature fluctuations, corrosion, and aging, long-term loads inevitably lead to the development of cracks of varying widths due to accumulated damage within the components, reducing their mechanical properties and threatening their durability. Traditional methods for repairing cracks in concrete structures, such as surface sealing, grooving, and grouting, suffer from a number of issues, including high energy consumption, high costs, environmental concerns, and even secondary damage to the building structure. Consequently, grouting is the most commonly used method for repairing concrete cracks.

[0003] Microbial-induced calcium carbonate deposition technology has become a widely-advocated method for concrete crack grouting repair due to its advantages such as being non-toxic, environmentally friendly, and durable. However, due to the different structural forms of the locations, the cracks in concrete components vary, and the crack morphology varies. In addition, due to the different external conditions such as temperature and humidity in the environment where the cracks are located, the development and evolution of the cracks are also different. In addition, due to the large uncertainty in the width of cracks caused by internally damaged components, traditional grouting pipes cannot be flexibly applied to cracks of various widths. For example, if the diameter of the grouting pipe head is too small, the grouting time and grouting pressure will be affected, which in turn affects the grouting effect. For example, if the grouting pipe head is too large compared to the crack, the grouting liquid may not be able to fully enter the bottom of the crack, which will have an adverse effect on the repair process. In addition, the crack surface needs to be cleaned before the crack is repaired. Faced with complex concrete cracks, how to design a grouting device with simple equipment to meet the needs of efficient repair of concrete cracks of various widths remains an urgent problem to be solved. Summary of the Invention

[0004] The present invention aims to provide a device and method for biomineralization repair of multi-width concrete cracks, which are used to adapt to crack widths of different sizes during the grouting repair process.

[0005] The present invention is achieved through the following technical solutions:

[0006] A multi-width concrete crack biomineralization repair device includes a vehicle body and a pressure assembly disposed on the vehicle body. The vehicle body is further provided with: a batching box, a mixing barrel, a batching pipe, and a power assembly. The bottom of the batching box is connected to the mixing barrel via the batching pipe. A stirring member is rotatably disposed in the mixing barrel, and the stirring member is connected to the output end of the motor in the power assembly. The bottom of the mixing barrel is connected to a grouting pipe head via a pipe. The grouting pipe head can be adjusted to adapt to different crack widths. The pipe is also connected to the output end of the pressure assembly via a valve. It should be noted that in the prior art, due to the large uncertainty in the width of cracks caused by internal damage to the components, traditional grouting pipes cannot be flexibly applied to cracks of various widths. For example, if the diameter of the grouting pipe head is too small, the grouting time and grouting pressure will be affected, thereby affecting the grouting effect. For example, if the grouting pipe head is too large compared to the crack, the grouting liquid may not be able to fully enter the bottom of the crack, which will have an adverse effect on the repair process.

[0007] Based on the above problems, the applicant proposed a multi-width concrete crack biomineralization repair device, which can adapt to cracks of different widths through a flexibly adjustable grouting pipe head, and can effectively mix grouting liquids that require multi-component mixing. Specifically, before grouting, the pressure component is started, and the pressure component is connected to the grouting pipe head through a valve. At this time, the grouting pipe head acts as a cleaning component, which cleans the debris in the crack surface through high-pressure spraying, which helps the contact between the grouting liquid and the crack surface, thereby promoting the crack repair process. More importantly, the caliber of the grouting pipe head has multiple adjustment states. For cracks with a width greater than the grouting pipe head, it is adjusted to an outward expansion state, and for cracks with a width less than the grouting pipe head, it is adjusted to an inward contraction state. For the outward expansion state, its structure is trumpet-shaped, and the grouting liquid sprayed through the grouting pipe head is scattered, which is easier to fit the inner wall of the crack; for the inward contraction state, its structure is duckbill-shaped, and the grouting liquid sprayed through the grouting pipe head is flat, which can perform grouting repair in environments with smaller crack widths.

[0008] Furthermore, the grouting pipe head includes: a movable portion, an adjustment portion, and a connecting portion. The movable portion includes a plurality of movable segments and a plurality of movable parts distributed in a circumferential array. The adjustment portion includes an adjustment outer sleeve and an adjustment inner cylinder. One end of the movable part is hingedly mounted on the movable segment and the other end is connected to the adjustment inner cylinder. The adjustment outer sleeve and the adjustment inner cylinder are slidably arranged. When the adjustment outer sleeve slides, it can drive the adjustment inner cylinder to slide. The plurality of movable segments can be movably spliced ​​together to form a cylinder. It should be noted that the movable portion is the end of the grouting pipe head, the adjustment portion is the middle portion of the grouting pipe head, and the connecting portion is the tail portion of the grouting pipe head. The connecting portion is preferably fixed to the grouting pipe by means of threads or other means. The ends of the movable segments are hingedly connected to the inner wall of the adjustment inner cylinder. The movable segments are spliced ​​together to form a tubular shape. Adjacent movable segments are also limited by stoppers to prevent damage to the movable segments after reaching maximum displacement. Based on the above structure, when the adjustment outer sleeve slides, the adjustment inner cylinder can slide accordingly, driving the movable segments in the corresponding positions to move.

[0009] Furthermore, the adjustable inner cylinder comprises two fixed cylinders and two sliding cylinders, the two fixed cylinders and sliding cylinders being arranged to slide with each other at intervals. The distal ends of the fixed cylinders are fixedly connected to the connecting portion, and the adjustable outer sleeve enables the sliding cylinders to slide forward or backward on the fixed cylinders. It should be noted that the fixed cylinders and sliding cylinders are preferably each a quarter of a tube segment and can be spliced ​​together at intervals to form the adjustable inner cylinder. The fixed cylinders are relatively fixed to the connecting portion, but the sliding cylinders can slide relative to the fixed cylinders. Consequently, when the two sliding cylinders slide, the movable tube segment can be expanded or contracted by the movable member.

[0010] Furthermore, the movable member includes a base plate and a three-link structure. One free end of the three-link structure is slidably mounted on the base plate, and another free end of the three-link structure is hingedly mounted on the movable segment. The other free end of the three-link structure is hingedly mounted on the sliding cylinder or the fixed cylinder. The base plate is fixedly mounted on the movable segment. When the adjustment sleeve is pushed forward, the movable segment hingedly mounted on the sliding cylinder will retract. When the adjustment sleeve is pushed backward, the movable segment hingedly mounted on the sliding cylinder will expand. It should be noted that the three-link structure, as the transmission structure between the movable segment and the adjustment inner cylinder, not only needs to be able to control the power transmission of the adjustment inner cylinder, but also needs to limit the displacement of the movable segment. The central connection structure of the three-link structure is also hinged.

[0011] Furthermore, the batching box includes several chambers for containing grouting liquid, and the bottoms of several of the chambers are connected to the upper end of the batching pipe. The upper end of the batching pipe is provided with a spacer plug, and the spacer plug is provided with several through holes. The end face of the spacer plug is rotatably provided with a batching disk, and the batching disk is provided with batching holes, and the batching holes are staggered with the through holes, and the outer peripheral surface of the batching disk is also provided with bevel teeth. It should be noted that, in the prior art, the mixing process of the grouting liquid is carried out in the form of direct stirring. In this process, due to the physical and chemical properties of the grouting liquid itself, it needs to be stirred multiple times. Different from this form in the prior art, in the present application, before the stirring operation, the grouting liquid of each component is proportioned and poured into the batching box, and enters the mixing barrel through the spacer plug. In this process, since the batching hole and the through hole are staggered, and the rotation of the batching plate will make the batching hole and the through hole intermittently connected, the grouting liquid in the batching box will also intermittently enter the mixing barrel, which is conducive to the full mixing and stirring process of the grouting liquid, and greatly avoids the problem of uneven mixing caused by grouting liquid accumulation.

[0012] Furthermore, the power assembly includes a planetary gear set, the output end of the motor is driven by the planetary gear set, and the shaft of the planetary gear set is also provided with a bevel gear, which meshes with the helical gear. It should be noted that the rotation process of the batching plate and the rotation process of the planetary gear set are a linked process, and the direct manifestation of this linked process is that the batching pipe and the mixing barrel are simultaneously discharged.

[0013] Preferably, the stirring element includes: a twisted paddle, a folding paddle, and a mixing paddle. The shaft on which the sun gear of the planetary gear set is located is keyed to a driving gear. The shafts on which the two planetary gears of the planetary gear set are located are respectively connected to the twisted paddle and the folding paddle. The driving gear is also meshed with a driven gear, and the shaft on which the driven gear is located is connected to the mixing paddle. Based on the above structure, the combined action of the power assembly and the stirring element can continuously stir the grouting liquid in the mixing barrel.

[0014] A biomineralization repair method for multi-width concrete cracks includes the following steps: Step 1: Cleaning the crack surface, adjusting the valve to connect the pressure component with the grouting pipe head, and using air pressure to clean the internal space of the crack surface; Step 2: Grouting liquid preparation, after Step 1 cleaning is completed, adding grouting liquid to each chamber of the batching box in proportion, and starting the motor to intermittently enter the mixing barrel through the batching pipe for stirring; Step 3: Grouting the crack surface, after the stirring in Step 2 is completed, adjusting the valve to allow the grouting liquid to be poured into the crack through the grouting pipe head, adjusting the crack width greater than the grouting pipe head to expand outward, and adjusting the crack width less than the grouting pipe head to contract inward. Based on the above steps, concrete cracks can be repaired.

[0015] Compared with the prior art, the present invention has the following advantages and beneficial effects:

[0016] 1. The caliber of the grouting pipe head of the present invention has multiple adjustment states. For cracks with a width greater than the grouting pipe head, it is adjusted to an outward expansion state, and for cracks with a width smaller than the grouting pipe head, it is adjusted to an inward contraction state. In the outward expansion state, its structure is trumpet-shaped, and the grouting liquid ejected through the grouting pipe head is scattered, which is easier to adhere to the inner wall of the crack; in the inward contraction state, its structure is duckbill-shaped, and the grouting liquid ejected through the grouting pipe head is flat, which can perform grouting repair in an environment with a smaller crack width;

[0017] 2. In the present invention, the dosing holes and the through holes are staggered, and the rotation of the dosing plate will cause the dosing holes and the through holes to be intermittently connected. The grouting liquid in the dosing box will also intermittently enter the mixing barrel, which promotes the full mixing and stirring process of the grouting liquid and greatly avoids the problem of uneven mixing caused by grouting liquid accumulation;

[0018] 3. The planetary gear set in the present invention does not act independently on the corresponding stirring shaft, but the sun gear and the planetary gear of the planetary gear set are distinguished by another gear set. The gear set can act as a decelerator or an accelerator, which can effectively promote the stirring process. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The drawings described herein are used to provide a further understanding of the embodiments of the present invention, constitute a part of this application, and do not constitute a limitation of the embodiments of the present invention. In the drawings:

[0020] Figure 1 It is a structural schematic diagram of the device of the present invention;

[0021] Figure 2 It is a structural schematic diagram of the grouting pipe head of the present invention;

[0022] Figure 3 It is a cross-sectional view of the grouting pipe head of the present invention;

[0023] Figure 4 This is an axial diagram of the internal structure of the grouting pipe head of the present invention;

[0024] Figure 5 for Figure 4 Schematic diagram of the enlarged structure of A;

[0025] Figure 6 Schematic diagram of the structure of the batching box;

[0026] Figure 7 Schematic diagram of the cross-section structure of the batching box;

[0027] Figure 8 It is a structural diagram of the ingredient tray;

[0028] Figure 9 Schematic diagram of the internal structure of the stirring element;

[0029] Figure 10 Flow chart of the method of the present invention.

[0030] Markings and corresponding parts names in the accompanying drawings:

[0031] 1-car body, 2-pressure assembly, 3-dosing box, 4-mixing barrel, 5-dosing pipe, 6-power assembly, 7-mixing element, 8-grouting pipe head,

[0032] 31- chamber, 32- spacer plug, 33- through hole, 34- ingredient plate, 35- ingredient hole, 36- oblique teeth,

[0033] 61-motor, 62-planetary gear set,

[0034] 621-sun gear, 622-planetary gear, 623-driving gear, 624-driven gear,

[0035] 71-twisted paddle, 72-folding paddle, 73-mixed paddle,

[0036] 81-movable part, 82-adjusting part, 83-connecting part,

[0037] 811- movable pipe segment, 812- movable part, 813- limiter, 814- sealing piece,

[0038] 821-adjust the outer sleeve, 822-adjust the inner sleeve,

[0039] 8121-base plate, 8122-three-link,

[0040] 8221-fixed cylinder, 8222-sliding cylinder. DETAILED DESCRIPTION

[0041] To make the objectives, technical solutions, and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the examples and accompanying drawings. The exemplary embodiments of the present invention and their descriptions are only used to explain the present invention and are not intended to limit the present invention. It should be noted that the present invention is already in the actual development and use stage.

[0042] Example 1:

[0043] Please refer to the attached Figures 1 to 9A multi-width concrete crack biomineralization repair device comprises a vehicle body 1 and a pressure assembly 2 disposed on the vehicle body 1. The vehicle body 1 is further provided with: a batching box 3, a mixing barrel 4, a batching pipe 5, and a power assembly 6. The bottom of the batching box 3 is connected to the mixing barrel 4 via the batching pipe 5. A stirring member 7 is rotatably disposed in the mixing barrel 4. The stirring member 7 is connected to the output end of the motor 61 in the power assembly 6. The bottom of the mixing barrel 4 is connected to a grouting pipe head 8 via a pipe. The grouting pipe head 8 can be adjusted to adapt to different crack widths. The pipe is also connected to the output end of the pressure assembly 2 via a valve. It should be noted that in the prior art, due to the large uncertainty in the width of cracks caused by internal damage to the components, traditional grouting pipes cannot be flexibly applied to cracks of various widths. For example, if the diameter of the grouting pipe head 8 is too small, the grouting time and grouting pressure will be affected, thereby affecting the grouting effect. For example, if the grouting pipe head 8 is too large compared to the crack, the grouting liquid may not be able to fully enter the bottom of the crack, which will have an adverse effect on the repair process.

[0044] Based on the above problems, the applicant proposed a multi-width concrete crack biomineralization repair device, which can adapt to cracks of different widths through a flexibly adjustable grouting pipe head 8, and can effectively mix grouting liquids that require multi-component mixing. Specifically, before grouting, the pressure component 2 is started, and the pressure component 2 is connected to the grouting pipe head 8 through a valve. At this time, the grouting pipe head 8 acts as a cleaning component, which cleans the debris in the crack surface through high-pressure spraying, which helps the contact between the grouting liquid and the crack surface, thereby promoting the crack repair process. More importantly, the caliber of the grouting pipe head 8 has multiple adjustment states. For cracks with a width greater than the grouting pipe head 8, it is adjusted to an outward expansion state, and for cracks with a width less than the grouting pipe head 8, it is adjusted to an inward contraction state. For the outward expansion state, its structure is trumpet-shaped, and the grouting liquid ejected through the grouting pipe head 8 is scattered, which is easier to fit the inner wall of the crack; for the inward contraction state, its structure is duckbill-shaped, and the grouting liquid ejected through the grouting pipe head 8 is flat, which can perform grouting repair in environments with smaller crack widths. In addition, in this embodiment, the upper end surface of the vehicle body 1 is preferably tilted, and similarly, the mixing barrel 4 is also tilted, and the motor 61 is fixed to the upper end of the vehicle body 1; the pressure assembly 2 is preferably a pressure pump, and the lower end is provided inside the frame structure of the vehicle body 1. The lower end of the vehicle body 1 can also be provided with universal wheels to facilitate movement to the locations of the cracks. In order to prevent the grouting liquid from leaking from the gaps between the movable pipe segments 811, a sealing sheet 814 is also provided at the joints of the movable pipe segments 811, which can achieve a better sealing effect. The grouting liquid in this embodiment is a mixture of bacterial liquid, solidifying liquid, and water. For the two-phase solution of bacterial liquid and solidifying liquid, the combined action of the proportioning box and the stirring element 7 can promote the mixing process of the two-phase solution. Regarding the adjustment size of the grouting pipe head 8, it can be understood that due to the uncertainty of the crack size, the crack size that can be repaired by the crack grouting process is generally greater than 0.2mm. The grouting pipe head 8 in this application can act alone on the grouting pipe, and is suitable for grouting cracks greater than 2mm. When acting alone, the size is adjusted by manually adjusting the sliding distance of the adjustment sleeve 821; it can also be used in conjunction with a spray gun, and is suitable for grouting cracks from 0.2mm to 2mm. The size of the grouting pipe head 8 is adjusted by cooperating with the screw port set at the upper end of the spray gun and the adjustment sleeve 821.

[0045] It should be noted that the grouting pipe head 8 includes: a movable part 81, an adjusting part 82 and a connecting part 83. The movable part 81 includes a plurality of movable pipe segments 811 and a plurality of movable parts 812 distributed in a circular array. The adjusting part 82 includes an adjusting outer sleeve 821 and an adjusting inner cylinder 822. One end of the movable part 812 is hingedly set on the movable pipe segment 811, and the other end is connected to the adjusting inner cylinder 822. The adjusting outer sleeve 821 and the adjusting inner cylinder 822 are slidingly arranged. When the adjusting outer sleeve 821 slides, it can drive the adjusting inner cylinder 822 to slide. Several of the movable pipe segments 811 can be movably spliced ​​into a cylinder. It should also be noted that the movable part 81 is the end of the grouting pipe head 8, the adjusting part 82 is the middle part of the grouting pipe head 8, and the connecting part 83 is the tail part of the grouting pipe head 8. The connecting part 83 is preferably fixed to the grouting pipe by means of threads or the like. The end of the movable pipe segment 811 is hinged to the inner wall of the adjusting inner tube 822, and the movable pipe segments 811 are spliced ​​together in a tubular shape. The adjacent two movable pipe segments 811 are also limited by a limiting member 813 to avoid damage to the movable pipe segment 811 after reaching the maximum displacement. Based on the above structure, when the adjusting outer sleeve 821 is slid, the adjusting inner tube 822 can slide accordingly and drive the movable pipe segment 811 at the corresponding position to move. As for the sliding structure of the adjusting outer sleeve 821 and the adjusting inner cylinder 822, in this embodiment, a dovetail groove or the like is preferably used, that is, a slot is provided on the inner wall of the adjusting outer sleeve 821, and a protrusion is provided on the outer wall of the adjusting inner cylinder 822. The protrusion matches the slot, and the length of the slot is significantly greater than the length of the protrusion. When the adjusting outer sleeve 821 moves to a certain position, the adjusting inner cylinder 822 will be driven to move together under the action of the protrusion and the slot.

[0046] It should be noted that the adjustment inner cylinder 822 includes two fixed cylinders 8221 and two sliding cylinders 8222. The two fixed cylinders 8221 and sliding cylinders 8222 are arranged to slide at intervals. The ends of the fixed cylinders 8221 are fixedly connected to the connecting portion 83. The adjustment outer sleeve 821 can enable the sliding cylinder 8222 to slide forward or backward on the fixed cylinder 8221. It should also be noted that the fixed cylinders 8221 and the sliding cylinders 8222 are preferably composed of a quarter of a tube segment and can be spliced ​​together at intervals to form the adjustment inner cylinder 822. The fixed cylinders 8221 and the connecting portion 83 are relatively fixed, but the sliding cylinders 8222 can slide relative to the fixed cylinder 8221. Therefore, when the two sliding cylinders 8222 slide, the movable tube segment 811 can be expanded or contracted through the movable member 812.

[0047] It should be noted that the movable part 812 includes a base plate 8121 and a three-link rod 8122, one free end of the three-link rod 8122 is slidably set on the base plate 8121, and another free end of the three-link rod 8122 is hingedly set on the movable pipe piece 811, and the other free end of the three-link rod 8122 is hingedly set to the sliding cylinder 8222 or the fixed cylinder 8221. The base plate 8121 is fixedly set on the movable pipe piece 811. When the adjusting sleeve 821 is pushed forward, the movable pipe piece 811 hinged by the sliding cylinder 8222 will retract. When the adjusting sleeve 821 is pushed backward, the movable pipe piece 811 hinged by the sliding cylinder 8222 will expand outward. It should also be noted that the three-link structure 8122, serving as the transmission mechanism between the movable segment 811 and the adjustable inner cylinder 822, not only needs to control the power transmission of the adjustable inner cylinder 822 but also needs to limit the displacement of the movable segment 811. The central connection structure of the three-link structure 8122 is also hinged. Regarding the limiter 813, in this embodiment, it is preferred that its main body is a clamping member with two limit holes, one corresponding to each of the two movable segments 811. A pin can be detachably connected to each of the limit holes, and the maximum displacement of the movable segment 811 can be adjusted by adjusting the position of the pin.

[0048] It should be noted that the batching box 3 includes several chambers 31 for containing grouting liquid, and the bottoms of several of the chambers 31 are connected to the upper end of the batching pipe 5. The upper end of the batching pipe 5 is provided with a spacer plug 32, and the spacer plug 32 is provided with several through holes 33. The end face of the spacer plug 32 is rotatably provided with a batching disk 34, and the batching disk 34 is provided with a batching hole 35, and the batching hole 35 is staggered with the through hole 33. The outer peripheral surface of the batching disk 34 is also provided with bevel teeth 36. It should also be noted that in the prior art, the mixing process of the grouting liquid is carried out in the form of direct stirring. In this process, due to the physical and chemical properties of the grouting liquid itself, it needs to be stirred multiple times. Different from this form in the prior art, in the present application, before the stirring operation, the grouting liquid of each component is proportioned and poured into the batching box 3, and enters the mixing barrel 4 through the spacer plug 32. In this process, since the batching hole 35 and the through hole 33 are staggered, and the rotation of the batching disk 34 will make the batching hole 35 and the through hole 33 intermittently connected, the grouting liquid in the batching box 3 will also intermittently enter the mixing barrel 4, which is conducive to the full mixing and stirring process of the grouting liquid, and greatly avoids the problem of uneven mixing caused by grouting liquid accumulation.

[0049] It should be noted that the power assembly 6 also includes a planetary gear set 62. The output end of the motor 61 is driven by the planetary gear set 62. The shaft of the planetary gear set 62 is also provided with a bevel gear, which meshes with the helical gear 36. It should also be noted that the rotation process of the batching plate 34 and the rotation process of the planetary gear set 62 are a linked process. The direct manifestation of the linked process is that the unloading process of the batching pipe 5 and the stirring process of the mixing barrel 4 are carried out simultaneously.

[0050] In this embodiment, it is more preferred that the stirring member 7 includes: a twisted paddle 71, a folding paddle 72 and a mixing paddle 73, the shaft where the sun gear 621 in the planetary gear set 62 is located is keyed to a driving gear 623, the shafts where the two planetary gears 622 in the planetary gear set 62 are located are respectively connected to the twisted paddle 71 and the folding paddle 72, the driving gear 623 is also engaged with a driven gear 624, and the shaft where the driven gear 624 is located is connected to the mixing paddle 73. Based on the above structure, the grouting liquid in the mixing barrel 4 can be continuously stirred by the combined action of the power assembly 6 and the stirring member 7. Different from the stirring process in the prior art, the planetary gear set 62 in the present application does not act alone with the corresponding stirring shaft, but uses another gear set to distinguish the sun gear 621 and the planetary gear 622 of the planetary gear set 62. The gear set can act as a deceleration or acceleration, which can effectively promote the stirring process.

[0051] Example 2:

[0052] This embodiment only describes the parts that differ from the first embodiment, specifically:

[0053] As attached Figure 10 As shown, a biomineralization repair method for multi-width concrete cracks includes the following steps: Step 1, crack surface cleaning, adjusting the valve to connect the pressure component 2 with the grouting pipe head 8, and using air pressure to clean the internal space of the crack surface; Step 2, grouting liquid preparation, after step 1 cleaning is completed, grouting liquid is added to each chamber 31 of the batching box 3 in proportion, and the motor 61 is started to allow the grouting liquid to intermittently enter the mixing barrel 4 through the batching pipe 5 for stirring; Step 3, crack surface grouting, after the stirring in step 2 is completed, adjusting the valve to allow the grouting liquid to be poured into the crack through the grouting pipe head 8, for cracks with a width greater than the grouting pipe head 8, adjust the state to expand outward, and for cracks with a width less than the grouting pipe head 8, adjust the state to shrink inward. Based on the above steps, concrete cracks can be repaired.

[0054] For the cleaning process, the corresponding debris in the cracks can be manually cleaned by sanding or high-pressure spraying, so as to promote the contact between the grouting liquid and the crack surface; for the mixing process, due to the vibration during the operation of the motor 61, the transmission mode of the motor 61 and the planetary gear set 62 is adjusted to belt drive. During the operation of the motor 61, the continuous vibration will promote the falling process of the grouting liquid in the proportioning box. In addition, the rotation process of the proportioning plate 34 will generate negative pressure at the through hole 33 and the proportioning hole 35, which also helps the flow of the grouting liquid, and the staggered setting of the through hole 33 and the proportioning hole 35 will make the grouting liquid passing through the proportioning hole 35 each time a different type of grouting liquid is used, which is completely different from the traditional one-time continuous stirring process; for the grouting process, the grouting pipe head 8 of different calibers will be manually adjusted for cracks of different widths. Specifically, the forward or backward adjustment of the outer sleeve 821 is determined by manual observation, and the outward expansion and inward contraction states have different guiding effects on the grouting liquid, which is completely lacking in the grouting pipe in the prior art.

[0055] The specific implementation methods described above further illustrate the objectives, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above description is only a specific implementation method of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A multi-width concrete crack biomineralization repair device, comprising a vehicle body (1) and a pressure assembly (2) arranged on the vehicle body (1), characterized in that: The vehicle body (1) is further provided with: a batching box (3), a mixing barrel (4), a batching pipe (5) and a power assembly (6); the bottom of the batching box (3) is connected to the mixing barrel (4) through the batching pipe (5); a stirring member (7) is rotatably provided in the mixing barrel (4); the stirring member (7) is connected to the output end of the motor (61) in the power assembly (6); the bottom of the mixing barrel (4) is connected to a grouting pipe head (8) through a pipeline; the grouting pipe head (8) can be adjusted to adapt to different crack widths; the pipeline is also connected to the output end of the pressure assembly (2) through a valve; The grouting pipe head (8) includes: a movable portion (81), an adjusting portion (82) and a connecting portion (83); the movable portion (81) includes a plurality of movable pipe segments (811) and a plurality of movable parts (812) distributed in a circumferential array; the adjusting portion (82) includes an adjusting outer sleeve (821) and an adjusting inner cylinder (822); one end of the movable part (812) is hingedly arranged on the movable pipe segment (811), and the other end is connected to the adjusting inner cylinder (822); the adjusting outer sleeve (821) and the adjusting inner cylinder (822) are slidably arranged; when the adjusting outer sleeve (821) slides, it can drive the adjusting inner cylinder (822) to slide; and a plurality of the movable pipe segments (811) can be movably spliced ​​into a cylinder; The adjusting inner cylinder (822) includes two fixed cylinders (8221) and two sliding cylinders (8222), the two fixed cylinders (8221) and the sliding cylinder (8222) are arranged to slide at intervals, the ends of the fixed cylinders (8221) are fixedly connected to the connecting portion (83), and the adjusting outer sleeve (821) can enable the sliding cylinder (8222) to slide forward or backward on the fixed cylinder (8221); the movable member (812) includes a base plate (8121) and a three-link rod (8122), one free end of the three-link rod (8122) is slidably arranged on the base plate (8121) ), another free end of the three-link (8122) is hingedly arranged on the movable pipe segment (811), the other free end of the three-link (8122) is hingedly arranged on the sliding cylinder (8222) or the fixed cylinder (8221), and the bottom plate (8121) is fixedly arranged on the movable pipe segment (811). When the adjusting sleeve (821) is pushed forward, the movable pipe segment (811) hingedly arranged on the sliding cylinder (8222) will be retracted, and when the adjusting sleeve (821) is pushed backward, the movable pipe segment (811) hingedly arranged on the sliding cylinder (8222) will be expanded.

2. The multi-width concrete crack biomineralization repair device according to claim 1, characterized in that: The batching box (3) includes a plurality of chambers (31) for accommodating grouting liquid. The bottoms of the plurality of chambers (31) are connected to the upper end of the batching pipe (5). The upper end of the batching pipe (5) is provided with a spacer plug (32). The spacer plug (32) is provided with a plurality of through holes (33). The end surface of the spacer plug (32) is rotatably provided with a batching disk (34). The batching disk (34) is provided with a batching hole (35). The batching hole (35) is staggered with the through hole (33). The outer peripheral surface of the batching disk (34) is also provided with bevel teeth (36).

3. The multi-width concrete crack biomineralization repair device according to claim 2, characterized in that: The power assembly (6) further includes a planetary gear set (62), the output end of the motor (61) is driven by the planetary gear set (62), and a bevel gear is further provided on the shaft of the planetary gear set (62), and the bevel gear is meshed with the helical gear (36).

4. The multi-width concrete crack biomineralization repair device according to claim 3, characterized in that: The stirring member (7) comprises: a twist paddle (71), a folding paddle (72) and a mixing paddle (73); the shaft on which the sun gear (621) in the planetary gear set (62) is located is keyed to a driving gear (623); the shafts on which the two planetary gears (622) in the planetary gear set (62) are located are respectively connected to the twist paddle (71) and the folding paddle (72); the driving gear (623) is also meshed with a driven gear (624); and the shaft on which the driven gear (624) is located is connected to the mixing paddle (73).

5. A biomineralization repair method for multi-width concrete cracks, characterized by: A multi-width concrete crack biomineralization repair device according to claim 1 or 4 comprises the following steps: Step 1: Cleaning the crack surface. Adjust the valve to connect the pressure assembly (2) with the grouting pipe head (8), and use air pressure to clean the internal space of the crack surface. Step 2, grouting liquid preparation: after the cleaning in step 1 is completed, grouting liquid is added to each chamber (31) of the batching box (3) in proportion, and the motor (61) is started to allow the grouting liquid to intermittently enter the mixing barrel (4) through the batching pipe (5) for stirring; Step 3, grouting the crack surface. After the stirring in step 2 is completed, the valve is adjusted to allow the grouting liquid to be poured into the crack through the grouting pipe head (8). For cracks with a width greater than the grouting pipe head (8), the state is adjusted to expand outward, and for cracks with a width less than the grouting pipe head (8), the state is adjusted to shrink inward.

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