A grouting repair device suitable for concrete cracks

Abstract

The present invention relates to a repair device, in particular to a grouting repair device suitable for concrete cracks, comprising a support frame, a grouting assembly and an auxiliary grouting assembly; it relates to the technical field of crack repair; the grouting assembly comprises a slurry storage tank, a pumping assembly, a first slurry outlet pipe and a first grouting pipe; the first slurry outlet pipe is positioned on the support frame and is connected to the pumping assembly; the first grouting pipe is a hose, and one or more rows of output ports are provided on its side wall; the auxiliary grouting assembly comprises an air pump, an air outlet pipe and an elastic hose; the air outlet pipe is fixed on the support frame and is connected to the air pump; the elastic hose is an elastic hose made of rubber, one end of the elastic hose is fixed on the elastic hose, and the other end is closed; the grouting repair device suitable for concrete cracks is achieved, which can perform high-quality repairs on wide and deep concrete cracks and causes little damage to the concrete during the repair process.

Description

Technical Field

[0001] The present invention relates to the technical field of crack repair, and in particular to a grouting repair device suitable for concrete cracks. Background Art

[0002] Concrete structures are the most widely used in civil engineering. my country currently accounts for approximately half of the world's annual concrete consumption in construction projects. However, due to various factors, such as improper construction pouring, insufficient reinforcement, concrete shrinkage and aging, and excessive loads, concrete structures often develop cracks. These cracks can allow substances such as moisture, acid, and alkali to penetrate the structure, causing destructive damage such as steel corrosion and concrete delamination. These damages can also affect the building's appearance, as well as the concrete structure's load-bearing capacity and service life. Consequently, these cracks require repair.

[0003] At present, the commonly used methods for repairing concrete cracks are surface repair method, surface grouting repair method and punching grouting method;

[0004] The surface repair method is to apply material on the surface of the crack to seal the crack, thereby isolating the inside from the outside world. This method can prevent the infiltration of water vapor to a certain extent in the early stage. However, as time goes by, the surface material gradually ages and the protective ability weakens, and it cannot fundamentally solve the crack problem.

[0005] The surface grouting repair method uses pressure-feeding equipment to press the repair slurry into the crack from the surface with a large pressure. However, it can only be pressed into a very shallow depth and cannot completely fill the crack, thus failing to fundamentally solve the crack problem. Sometimes, due to excessive pressure, secondary damage to the crack is caused, further compromising the structural safety.

[0006] The drilling and grouting method involves drilling oblique holes from both sides of the crack to the crack and then injecting grout. However, this method has significant drawbacks. On the one hand, it can cause significant damage to the structure. On the other hand, it is impossible to accurately determine whether the hole has been drilled into the crack, which often leads to over-drilling and causes secondary damage to the structure.

[0007] Surface grouting and punch grouting are relatively effective for repairing narrow and shallow cracks, but for wide and deep cracks (cracks), the repair effect is not ideal due to the limitations on the depth to which the repair slurry can actually be pressed and the difficulty in judging the actual direction of the cracks.

[0008] Accurate, dense and complete repair of cracks is crucial to the safety characteristics of concrete structures. Therefore, a grouting repair device is needed that can perform high-quality repairs on wide and deep concrete cracks and cause little damage to the concrete during the repair process. Summary of the Invention

[0009] The embodiment of the present application solves the technical problems in the prior art of the grouting repair device for concrete cracks, such as poor repair effect on wide and deep concrete cracks, shallow penetration depth of the repair slurry, and large damage to the original concrete structure during the grouting repair process, by providing a grouting repair device suitable for concrete cracks. The embodiment of the present application achieves the technical effect that the grouting repair device for concrete cracks can perform high-quality repairs on wide and deep concrete cracks with minimal damage to the concrete during the repair process.

[0010] The present application provides a grouting repair device suitable for concrete cracks, which is characterized by:

[0011] Including support frame, grouting components and auxiliary grouting components,

[0012] The grouting assembly includes a slurry storage tank, a pumping assembly for pumping the repair slurry in the slurry storage tank to the first grouting pipe, a first slurry outlet pipe and a first grouting pipe;

[0013] The first slurry outlet pipe is positioned on the support frame and is connected to the pumping assembly;

[0014] The first grouting pipe is a hose with one or more rows of output ports provided on its side wall;

[0015] The auxiliary grouting assembly is used to limit the flow direction of the slurry output from the first grouting pipe to facilitate the penetration of the slurry, and includes an air pump, an air outlet pipe and an elastic hose;

[0016] The air outlet pipe is fixed on the support frame, is a hard pipe body, and is connected to the air pump;

[0017] One end of the elastic hose is fixed on the air outlet pipe, and the other end is closed; when in use, the elastic hose is inserted into the crack, and then expands under the control of the control unit to limit the flow direction of the slurry in the crack.

[0018] Furthermore, an inner core is provided inside the elastic hose, and the inner core is a strip-shaped soft rod. The elastic hose is wrapped around the inner core, and the elastic hose is tightly attached to the inner core before expansion.

[0019] Furthermore, an air pressure sensor is fixed to the closed end of the elastic hose, the air pressure sensor is connected to the control unit signal, and the air pressure sensor is used to detect the gas pressure inside the elastic hose.

[0020] Furthermore, the output ports are arranged in a row; one or more pulling ropes are tied to the first grouting pipe, and the pulling ropes are wires, one end of which is fixed to the first grouting pipe, and the other end is exposed outside the crack during grouting.

[0021] Furthermore, a second slurry outlet pipe is fixed on the support frame, and the pumping assembly also includes a valve body. After the pump body transports the slurry to the valve body, it transports it to the first slurry outlet pipe and the second slurry outlet pipe respectively under the control of the control unit; the end of the first grouting pipe away from the first slurry outlet pipe is fixed on the second slurry outlet pipe.

[0022] Furthermore, a cleaning assembly is fixed on the support frame for cleaning the first grouting pipe after use; the cleaning assembly includes a liquid pump and a liquid outlet pipe, the liquid outlet pipe is a hard pipe body, and is fixed on the support frame; the liquid outlet pipe is connected to the liquid pump, and the operation of the liquid pump is controlled by a control unit; when cleaning the first grouting pipe, the first grouting pipe is fixed on the liquid outlet pipe, and the control unit controls the liquid pump to pump water to flush the first grouting pipe.

[0023] Furthermore, a drilling assembly and a third slurry outlet pipe are fixed on the support frame. The third slurry outlet pipe is a hard pipe body, which is connected to the valve body on the pump body and is used to output repair slurry; the third slurry outlet pipe is fixed with a second grouting pipe, which is a hose and is used to extend into the hole drilled by the drilling assembly for grouting; the drilling assembly and the second grouting pipe are specifically used to deal with narrow and fine cracks.

[0024] Furthermore, the outer end of the pulling rope is connected to a tube pulling assembly;

[0025] The tube pulling assembly includes a lifting and reeling frame, which includes a first lifting column, a second lifting column, a carrying tube, a rotating rod, a sliding carrying ring, a rotating drive assembly and a positioning rod;

[0026] The first lifting column is a telescopic rod structure, the bottom of which is rotatably fixedly connected to the top of the support frame;

[0027] The second lifting column is also a telescopic rod structure with a vacuum suction cup at the bottom;

[0028] There are two supporting tubes, which are fixed on the top of the first lifting column and the second lifting column respectively;

[0029] The positioning rod can be rotatably positioned on one of the supporting tubes, and its axis coincides with the axis of the supporting tube;

[0030] The rotation drive assembly is positioned on the supporting tube of the positioning rod and is used to drive the positioning rod to rotate around its own axis;

[0031] The rotating rod is a long hard rod, one end of which is fixed to the positioning rod, is coaxial with the positioning rod and passes through a supporting tube away from the positioning rod, and rotates together with the positioning rod;

[0032] The sliding bearing ring is a ring body, and there are multiple ring bodies, all of which are sleeved and slidably positioned on the rotating rod;

[0033] The sliding bearing ring serves to fix the pulling rope. The number of pulling ropes is equal to the number of sliding bearing rings and the two correspond one to one. One end of the pulling rope is fixed on the sliding bearing ring, and the other end is fixed on the first grouting pipe.

[0034] Furthermore, the pull rope includes an elastic part and two non-elastic parts, the elastic part is a strip-shaped elastic bag with built-in powder, and the non-elastic part is a wire without elasticity. One end of one of the non-elastic parts is positioned on the sliding bearing ring, and the other end is fixed on the elastic part. One end of the other non-elastic part is positioned on the first grouting pipe, and the other end is fixed on the elastic part.

[0035] Furthermore, a marking tape is attached to the pull rope, which is attached to all the pull ropes and is perpendicular to the length direction of the pull rope.

[0036] One or more technical solutions provided in the embodiments of this application have at least the following technical effects or advantages:

[0037] By providing a grouting repair device for concrete cracks, which includes a grouting pipe with multiple output ports on the side wall and an auxiliary grouting component with an elastic tube as the main body, grouting repair is performed by burying the grouting pipe in the gap to be repaired during grouting, and after burying the grouting pipe, the auxiliary grouting component is buried and its expansion is controlled to limit the flow direction of the slurry output from the grouting pipe; the technical problems in the prior art that the grouting repair device suitable for concrete cracks has poor repair effect on wide and deep concrete cracks, the repair slurry can be pressed to a shallow depth, and the original concrete structure is greatly damaged during the grouting repair process are effectively solved, thereby achieving the technical effect that the grouting repair device suitable for concrete cracks can perform high-quality repair on wide and deep concrete cracks and cause little damage to the concrete during the repair process. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 The figure is a schematic diagram of the overall structure of a grouting repair device suitable for concrete cracks;

[0039] Figure 2 This is a schematic diagram of the state after the first grouting pipe is extended into the crack;

[0040] Figure 3 Schematic diagram of the positional relationship between the elastic hose and the inner core;

[0041] Figure 4 It is a structural diagram of the tube pulling assembly;

[0042] Figure 5 It is a structural diagram of the rotating rod;

[0043] Figure 6 Schematic diagram of the positional relationship between the sliding bearing ring and the rotating rod;

[0044] Figure 7 The following is a simplified diagram of the structure of the pull rope;

[0045] Figure 8 Schematic diagram of the positional relationship between the marking tape and the pull rope;

[0046] Figure 9 This is a schematic diagram of the positional relationship between the elastic hose and the first grouting pipe in the cleaning state.

[0047] Explanation of reference numerals: concrete 001, crack 002, support frame 100, rod storage container 110, probe rod 120, drilling assembly 200, grouting assembly 300, slurry storage tank 310, pumping assembly 320, slurry delivery pipe 321, first slurry outlet pipe 330, second slurry outlet pipe 340, third slurry outlet pipe 350, first grouting pipe 360, output port 361, second grouting pipe 370, auxiliary grouting assembly 400, air pump 410, air outlet pipe 420, elastic Hose 430, inner core 431, air pressure sensor 440, cleaning assembly 500, liquid pump 510, liquid outlet pipe 520, tube pulling assembly 600, pulling rope 610, elastic part 611, non-elastic part 612, marking tape 620, lifting and reeling frame 630, first lifting column 631, second lifting column 632, supporting tube 633, rotating rod 634, splicing rod 635, sliding supporting ring 636, rotating drive assembly 637, positioning rod 638. DETAILED DESCRIPTION

[0048] To facilitate understanding of the present invention, the present application will be described more comprehensively below with reference to the relevant drawings; the drawings show preferred embodiments of the present invention, but the present invention can be implemented in many different forms and is not limited to the embodiments described herein; on the contrary, the purpose of providing these embodiments is to enable a more thorough and comprehensive understanding of the disclosed content of the present invention.

[0049] It should be noted that the terms “vertical”, “horizontal”, “up”, “down”, “left”, “right” and similar expressions used in this document are for illustrative purposes only and do not represent the only implementation method.

[0050] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this invention pertains; the terms used herein in the specification of the present invention are for the purpose of describing specific embodiments only and are not intended to limit the present invention; the term "and / or" used herein includes any and all combinations of one or more of the associated listed items.

[0051] like Figure 1As shown, a grouting repair device suitable for concrete cracks includes a support frame 100, a grouting assembly 300, an auxiliary grouting assembly 400, a power assembly and a control unit.

[0052] The support frame 100 is a frame structure or a box structure, and is used to carry the grouting assembly 300 and the auxiliary grouting assembly 400. The bottom of the support frame 100 is provided with support wheels, which are preferably universal wheels.

[0053] The grouting assembly 300 includes a slurry storage tank 310, a pumping assembly 320, a first slurry outlet pipe 330 and a first grouting pipe 360;

[0054] The slurry storage tank 310 is fixed on the support frame 100 and is used as a slurry container;

[0055] The pumping assembly 320 is used to pump the repair slurry in the slurry storage tank 310 to the first grouting pipe 360;

[0056] The pumping assembly 320 includes a pump body and a slurry delivery pipe 321. The pump body is preferably a peristaltic pump or a mud pump, which is fixed on the support frame 100. The slurry delivery pipe 321 is connected to the pump body.

[0057] The first slurry outlet pipe 330 is a hard pipe with a length less than 30 cm, positioned on the support frame 100 and connected to the pump body. The first slurry outlet pipe 330 is used to support and fix the first grouting pipe 360;

[0058] The first grouting pipe 360 is a hose with a length greater than 1.5 meters and an inner diameter less than 0.28 centimeters. One or more rows of output ports 361 are provided on its side wall (during grouting, the part of the first grouting pipe 360 with the output port 361 is plugged into the crack 002). The repair slurry in the first grouting pipe 360 is output from the output port 361 and transported into the crack 002 of the concrete 001; during actual use, the first grouting pipe 360 is plugged into the crack 002 and then grouting is performed.

[0059] The auxiliary grouting assembly 400 is used to limit the flow direction of the slurry output from the first grouting pipe 360 to facilitate the slurry penetration, and includes an air pump 410, an air outlet pipe 420 and an elastic hose 430;

[0060] The air pump 410 is fixed on the support frame 100;

[0061] The air outlet pipe 420 is fixed to the support frame 100 and is a hard tube with a length less than 30 cm, and is connected to the air pump 410;

[0062] The elastic hose 430 is an elastic tube made of rubber, with a length greater than 1.5 meters and an inner diameter less than 0.3 centimeters before expansion. When in use, the elastic hose 430 is inserted into the crack 002, and then expands under the control of the control unit to limit the flow direction of the slurry in the crack 002. One end of the elastic hose 430 (detachable) is fixed on the elastic hose 430, and the other end is closed.

[0063] The process of inserting the first grouting pipe 360 and the elastic hose 430 into the crack 002 is completed by an operator holding a probe rod 120, which is a soft rod.

[0064] The power assembly is used to provide power for the operation of various components of the grouting repair device for concrete cracks in this application, and the control unit plays a role in controlling the coordinated operation of various components of the grouting repair device for concrete cracks. Both are existing technologies and will not be described in detail here.

[0065] Preferably, the control unit is a combination of a programmable logic controller and control buttons.

[0066] The grouting repair device for concrete cracks of the present application can be applied to both horizontal cracks 002 and vertical cracks 002.

[0067] Preferably, the elastic hose 430 is disposable.

[0068] Preferably, Figure 3 As shown, the elastic hose 430 is provided with an inner core 431, which is a strip-shaped soft rod made of metal, rubber or plastic. The elastic hose 430 is wrapped around the inner core 431, and the elastic hose 430 is tightly attached to the inner core 431 before expansion. The presence of the inner core 431 is conducive to protecting the elastic hose 430 from being easily scratched.

[0069] Preferably, an air pressure sensor 440 is fixed to the closed end of the elastic hose 430, and the air pressure sensor 440 is connected to the control unit signal. The air pressure sensor 440 is used to detect the gas pressure inside the elastic hose 430 and is preferably detachable; the air pump 410 operates under the control of the control unit and expands the elastic hose 430 by pumping air. After that, the air pump 410 stops running, and the air pressure sensor 440 monitors whether the air pressure inside the elastic hose 430 gradually decreases. If it decreases, it means that the elastic hose 430 may be leaking, and the air pump 410 is controlled to replenish it in time.

[0070] In actual use, such as Figure 2 As shown, the steps are:

[0071] 1. Use the existing crack detector to detect the width and depth of crack 002 as a reference;

[0072] 2. Insert the first grouting pipe 360 into the crack 002 and use the probe 120 to push the first grouting pipe 360 as deep into the crack 002 as possible (the length direction of the first grouting pipe 360 is approximately the same as the length direction of the crack 002);

[0073] 3. Insert the elastic hose 430 into the crack 002 and use the probe 120 to push the elastic hose 430 as deep into the crack 002 as possible (the elastic hose 430 is now close to the first grouting pipe 360);

[0074] 4. Control the air pump 410 to operate (preferably for 10 to 30 seconds) so that the elastic hose 430 expands, preventing most of the repair slurry from flowing upward (the presence of the elastic hose 430 facilitates the repair slurry to penetrate deeper into the crack 002);

[0075] 5. Control the pumping assembly 320 to operate, causing the first grouting pipe 360 to output the repair slurry and flow it into the depth of the crack 002; continue pumping until the elastic hose 430 is squeezed and moves upward (the probe rod 120 can be used to press against the elastic hose 430 to determine whether the elastic hose 430 has moved upward by observing whether the probe rod 120 is pushed up);

[0076] 6. At this time, the air pump 410 is controlled to pump air, thereby causing the elastic hose 430 to shrink and return to its original shape;

[0077] 7. Wait for the repair slurry to overflow from the crack 002 (at this time, the elastic hose 430 is pushed out of the crack 002), and stop running the pumping assembly 320;

[0078] 8. Pull out the first grouting pipe 360 from the crack 002 and repair the surface of the crack 002 by screeding or other methods.

[0079] Preferably, the output ports 361 are in a row; one or more pulling ropes 610 are tied to the first grouting pipe 360 (the presence of the pulling rope 610 is more conducive to the output port 361 facing downward), the pulling rope 610 is a wire, one end of which is fixed on the first grouting pipe 360 (the fixed position of the pulling rope 610 is away from the output port 361), and the other end is exposed outside the crack 002 during grouting; during the grouting process, the operator can gradually pull up the first grouting pipe 360 by pulling the pulling rope 610 to assist the first grouting pipe in the grouting process. 360 is lifted; when performing the above step 3, the first grouting pipe 360 is inserted so that the first grouting pipe 360 is twisted as little as possible so that the output port 361 is as downward as possible; step 4 also includes: pulling the pull rope 610 in sequence so that the output port 361 of the first grouting pipe 360 is downward; the step 7 is: the elastic hose 430 and the first grouting pipe 360 are gradually pushed out of the crack 002 (during the ejection process, the elastic hose 430 and the first grouting pipe 360 can be assisted to move upward by pulling a single or all of the pull ropes 610).

[0080] Preferably, in order to adapt to different lengths of the crack 002, the elastic hose 430 and the first grouting pipe 360 are both available in a variety of specifications, and different specifications have different lengths.

[0081] Preferably, in order to adapt to different lengths of the crack 002, the elastic hose 430 and the first grouting pipe 360 are both multiple pipes that can be detachably spliced together.

[0082] Preferably, in actual use, in order to ensure that the output ports 361 on the first grouting pipe 360 are all facing deep into the crack 002, the output ports 361 are in a row, and the first grouting pipe 360 is first glued together with the elastic hose 430 by glue or colloid before being inserted into the crack 002.

[0083] Preferably, a second slurry outlet pipe 340 is also fixed on the support frame 100, and the pumping assembly 320 also includes a valve body. After the pump body transports the slurry to the valve body, it is transported to the first slurry outlet pipe 330 and the second slurry outlet pipe 340 respectively under the control of the control unit; the end of the first grouting pipe 360 away from the first slurry outlet pipe 330 is fixed on the second slurry outlet pipe 340; when in use, grouting can be performed at both ends of the first grouting pipe 360 at the same time, so as to ensure more uniform grouting.

[0084] Preferably, a cleaning assembly 500 is also fixed on the support frame 100, which is used to clean the first grouting pipe 360 after use; the cleaning assembly 500 includes a liquid pump 510 and a liquid outlet pipe 520, and the liquid outlet pipe 520 is a hard tube body fixed on the support frame 100; the liquid outlet pipe 520 is connected to the liquid pump 510, and the operation of the liquid pump 510 is controlled by the control unit; when cleaning the first grouting pipe 360, the first grouting pipe 360 is fixed on the liquid outlet pipe 520, and the control unit controls the liquid pump 510 to pump water to flush the first grouting pipe 360.

[0085] Preferably, Figure 9 As shown, before cleaning the first grouting pipe 360, the elastic hose 430 is first put on the first grouting pipe 360, and then the first grouting pipe 360 is fixed on the liquid outlet pipe 520; the liquid pump 510 operates intermittently, and only part of the output port 361 is exposed during the flushing process (the impact force of water at the exposed output port 361 is greater and the unexposed part of the output port 361 is circulated with water in and out due to the intermittent operation of the liquid pump 510), thereby obtaining a better cleaning effect.

[0086] Preferably, a drilling assembly 200 and a third slurry outlet pipe 350 are also fixed on the support frame 100, and the drilling assembly 200 is a concrete drill bit in the prior art; the third slurry outlet pipe 350 is a hard pipe body, which is connected to the valve body on the pump body and is used to output repair slurry; the third slurry outlet pipe 350 is fixed with a second grouting pipe 370, and the second grouting pipe 370 is a hose, which is used to extend into the hole drilled by the drilling assembly 200 for grouting; the drilling assembly 200 and the second grouting pipe 370 are specifically used to process narrow and fine cracks 002, and both are prior art and will not be described here.

[0087] The technical solutions in the above embodiments of the present application have at least the following technical effects or advantages:

[0088] The present invention solves the technical problems in the prior art of the grouting repair device for concrete cracks, such as poor repair effect for wide and deep concrete cracks, shallow penetration depth of the repair slurry, and large damage to the original concrete structure during the grouting repair process. The present invention achieves the technical effect that the grouting repair device for concrete cracks can perform high-quality repairs on wide and deep concrete cracks with little damage to the concrete during the repair process.

[0089] In order to further facilitate the completion of the repair work, reduce the labor intensity during the use of the equipment and improve the practicality of the present application, the embodiment of the present application is additionally provided with a pipe pulling assembly 600 on the basis of the above embodiment, and the pipe pulling assembly 600 is used to assist in completing the pulling of the first grouting pipe 360, specifically:

[0090] like Figure 4As shown, the tube pulling assembly 600 includes a lifting and reeling frame 630 , and the lifting and reeling frame 630 includes a first lifting column 631 , a second lifting column 632 , a supporting tube 633 , a rotating rod 634 , a sliding supporting ring 636 , a rotating driving assembly 637 and a positioning rod 638 ;

[0091] The first lifting column 631 is a telescopic rod structure, the bottom of which is rotatably fixedly connected to the top of the support frame 100; a drive motor is positioned at the connection position between the first lifting column 631 and the support frame 100, and the drive motor is controlled by a control unit and is used to control the angle between the first lifting column 631 and the support frame 100;

[0092] The second lifting column 632 is also a telescopic rod structure, and a vacuum suction cup (controlled by the control unit) is provided at the bottom. The vacuum suction cup is used to ensure that the second lifting column 632 can stand stably on the ground and temporarily adhere to the surface of the longitudinally arranged concrete component;

[0093] There are two supporting tubes 633 , which are fixed to the top of the first lifting column 631 and the top of the second lifting column 632 respectively, and are used to support the rotating rod 634 and the positioning rod 638 ;

[0094] The positioning rod 638 is rotatably positioned on one of the support tubes 633, with its own axis coinciding with the axis of the support tube 633. It is less than 30 cm long and serves to support and fix the sliding support ring 636. The rotation drive assembly 637 is positioned on the support tube 633 where the positioning rod 638 is positioned, and is used to drive the positioning rod 638 to rotate about its own axis.

[0095] The rotating rod 634 is a long, rigid rod, one end of which is fixed to the positioning rod 638. The rotating rod 634 is coaxial with the positioning rod 638 and extends through the supporting tube 633 away from the positioning rod 638. The rotating rod 634 is provided with a long, rectangular protrusion or a long, rectangular groove having a length that is the same as the axial direction of the rotating rod 634.

[0096] like Figure 6 As shown, the sliding bearing ring 636 is a ring body, and there are multiple of them, all of which are sleeved and slidably positioned on the rotating rod 634. The inner wall of the sliding bearing ring 636 is provided with a protrusion or groove that cooperates with the rotating rod 634. When the rotating rod 634 rotates, the sliding bearing ring 636 rotates accordingly; the sliding bearing ring 636 plays the role of fixing the pulling rope 610; the number of pulling ropes 610 is equal to the number of sliding bearing rings 636 and the two correspond one to one. One end of the pulling rope 610 is fixed to the sliding bearing ring 636, and the other end is fixed to the first grouting pipe 360; all pulling ropes 610 are of equal length;

[0097] During actual use: First, the tube body pulling component 600 can be arranged to be in a U - shaped as a whole; then the pulling rope 610 is fixed, and the distance between the sliding bearing rings 636 is adjusted as needed so that the pulling rope 610 is as perpendicular as possible to the plane where the crack 002 is located; the rotating rod 634 is controlled to rotate to release the pulling rope 610 or the first lifting column 631 and the second lifting column 632 are contracted so that the pulling rope 610 is in a slack state; the first grouting pipe 360 and the elastic hose 430 are successively inserted into the crack 002; during the grouting process, the rotating rod 634 is controlled to rotate or the first lifting column 631 and the second lifting column 632 are controlled to extend, so that the sliding bearing rings 636 reel in the pulling rope 610, and the first grouting pipe 360 is gradually pulled out.

[0098] Preferably, the rotating rod 634 and the positioning rod 638 are integrally formed.

[0099] Preferably, as Figure 5 shown, for the convenience of transporting the whole device and to enable the device to be applicable to cracks 002 of more lengths, the rotating rod 634 is composed of multiple splicing rods 635 with lengths less than 40 cm, which are spliced one by one (by magnetic force or snap).

[0100] Preferably, a rod storage container 110 for storing the splicing rods 635 is fixed on the support frame 100; in the transportation state, the sliding bearing rings 636 are all sleeved on the positioning rods 638.

[0101] Preferably, as Figure 7 shown, in order to be able to visually observe in real - time the different depths of different segments of the first grouting pipe 360 in the crack 002, and thus facilitate the operator to adjust the depth of the first grouting pipe 360 in the crack 002 in a timely manner by pulling a local part of the first grouting pipe 360 to facilitate the grouting process (a local part of the first grouting pipe 360 may not be easily pulled up due to the shape of the crack 002, and continuous and unidirectional pulling may cause the fracture of the pulling rope 610 or serious wear of the first grouting pipe 360); preferably, the pulling rope 610 includes an elastic part 611 and two non - elastic parts 612. The elastic part 611 is a strip - shaped elastic capsule with internal powder (which is easy to stretch and slow to contract), and the non - elastic parts 612 are wires without elasticity; one end of one non - elastic part 612 is positioned on the sliding bearing ring 636, and the other end is fixed on the non - elastic part 612, and the length of this non - elastic part 612 is less than 20 cm; one end of the other non - elastic part 612 is positioned on the first grouting pipe 360, and the other end is fixed on the non - elastic part 612; the length of the elastic part 611 when not stretched is greater than 20 cm and less than 30 cm;

[0102] During actual use, the pulling rope 610 can be first released by controlling the rotating rod 634 to rotate and contract the first lifting column 631 and the second lifting column 632 to make the pulling rope 610 in a relaxed state, and then the first grouting pipe 360 is inserted into the crack 002. After the first grouting pipe 360 is inserted, all the pulling ropes 610 are in a taut state; thereafter, grouting is performed, and then the first grouting pipe 360 is pulled out by controlling the extension of the first lifting column 631 and the second lifting column 632; the difficulty of pulling the first grouting pipe 360 at different positions will be fed back to the elastic part 611, and the pulling rope 610 with a longer elastic part 611 is manually pulled and adjusted, thereby reducing the risk of breakage of the pulling rope 610 and severe wear of the first grouting pipe 360.

[0103] Preferably, Figure 8 As shown, in order to make the depth of different sections of the first grouting pipe 360 in the crack 002 more intuitive when observed with the naked eye, a marking tape 620 can be pasted on the pull rope 610 before pulling the first grouting pipe 360. The marking tape 620 is a tape with a width of less than 3 cm and is preferably red in color; it is stuck on all pull ropes 610 and is perpendicular to the length direction of the pull rope 610.

[0104] The foregoing description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Various modifications and variations are readily apparent to those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A grouting repair device suitable for concrete cracks, characterized by: Including support frame, grouting components and auxiliary grouting components, The grouting assembly includes a slurry storage tank, a pumping assembly for pumping the repair slurry in the slurry storage tank to the first grouting pipe, a first slurry outlet pipe and a first grouting pipe; The first slurry outlet pipe is positioned on the support frame and is connected to the pumping assembly; The first grouting pipe is a hose with one or more rows of output ports provided on its side wall; The auxiliary grouting assembly is used to limit the flow direction of the slurry output from the first grouting pipe to facilitate the penetration of the slurry, and includes an air pump, an air outlet pipe and an elastic hose; The air outlet pipe is fixed on the support frame, is a hard pipe body, and is connected to the air pump; One end of the elastic hose is fixed to the outlet pipe, and the other end is closed; when in use, the elastic hose is inserted into the crack and then expands under the control of the control unit to restrict the flow direction of the slurry in the crack; The output port is in a row; the first grouting pipe is tied with one or more pull ropes, the pull rope is a wire, one end of which is fixed to the first grouting pipe and the other end is exposed outside the crack during grouting; The outer end of the pulling rope is connected to a tube pulling assembly; The tube pulling assembly includes a lifting and reeling frame, which includes a first lifting column, a second lifting column, a carrying tube, a rotating rod, a sliding carrying ring, a rotating drive assembly and a positioning rod; The first lifting column is a telescopic rod structure, the bottom of which is rotatably fixedly connected to the top of the support frame; The second lifting column is also a telescopic rod structure with a vacuum suction cup at the bottom; There are two supporting tubes, which are fixed on the top of the first lifting column and the second lifting column respectively; The positioning rod can be rotatably positioned on one of the supporting tubes, and its axis coincides with the axis of the supporting tube; The rotation drive assembly is positioned on the supporting tube of the positioning rod and is used to drive the positioning rod to rotate around its own axis; The rotating rod is a long hard rod, one end of which is fixed to the positioning rod, is coaxial with the positioning rod and passes through a supporting tube away from the positioning rod, and rotates together with the positioning rod; The sliding bearing ring is a ring body, and there are multiple ring bodies, all of which are sleeved and slidably positioned on the rotating rod; The sliding bearing ring serves to fix the pulling rope. The number of pulling ropes is equal to the number of sliding bearing rings and the two correspond one to one. One end of the pulling rope is fixed on the sliding bearing ring, and the other end is fixed on the first grouting pipe.

2. A grouting repair device for concrete cracks according to claim 1, characterized in that: An inner core is provided inside the elastic hose, and the inner core is a strip-shaped soft rod. The elastic hose is wrapped around the inner core, and the elastic hose is tightly attached to the inner core before expansion.

3. A grouting repair device for concrete cracks according to claim 1, characterized in that: An air pressure sensor is fixed to the closed end of the elastic hose. The air pressure sensor is connected to the control unit for signal transmission. The air pressure sensor is used to detect the gas pressure inside the elastic hose.

4. A grouting repair device for concrete cracks according to claim 1, characterized in that: A second slurry outlet pipe is also fixed on the support frame, and the pumping assembly also includes a valve body. After the pump body transports the slurry to the valve body, it is transported to the first slurry outlet pipe and the second slurry outlet pipe respectively under the control of the control unit; the end of the first grouting pipe away from the first slurry outlet pipe is fixed on the second slurry outlet pipe.

5. The grouting repair device for concrete cracks according to claim 1, characterized in that: A cleaning assembly is also fixed on the support frame for cleaning the first grouting pipe after use; the cleaning assembly includes a liquid pump and a liquid outlet pipe, the liquid outlet pipe is a hard pipe body, and is fixed on the support frame; the liquid outlet pipe is connected to the liquid pump, and the operation of the liquid pump is controlled by a control unit; when cleaning the first grouting pipe, the first grouting pipe is fixed on the liquid outlet pipe, and the control unit controls the liquid pump to pump water to flush the first grouting pipe.

6. A grouting repair device for concrete cracks according to claim 4, characterized in that: A drilling assembly and a third slurry outlet pipe are also fixed on the support frame. The third slurry outlet pipe is a hard pipe body, which is connected to the valve body on the pump body and is used to output repair slurry; the third slurry outlet pipe is fixed with a second grouting pipe, which is a soft pipe and is used to extend into the hole drilled by the drilling assembly for grouting; the drilling assembly and the second grouting pipe are specifically used to handle narrow and fine cracks.

7. A grouting repair device for concrete cracks according to claim 1, characterized in that: The pull rope includes an elastic part and two non-elastic parts. The elastic part is a strip-shaped elastic bag with built-in powder, and the non-elastic part is a wire without elasticity. One end of one of the non-elastic parts is positioned on the sliding bearing ring, and the other end is fixed on the elastic part. One end of the other non-elastic part is positioned on the first grouting pipe, and the other end is fixed on the elastic part.

8. The grouting repair device for concrete cracks according to claim 7, characterized in that: The pulling ropes are pasted with marking tapes, which are pasted on all the pulling ropes and are perpendicular to the length direction of the pulling ropes.

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