A drilling and grouting device for concrete crack repair

Abstract

The utility model belongs to building repair and reinforcing equipment field discloses a kind of drilling grouting device for concrete crack repair, including fuselage main body;Hollow rotating shaft is rotatably arranged in the inside of fuselage main body, and the center of hollow rotating shaft is provided with grouting passage;The first end of hollow rotating shaft extends to the front end of fuselage main body, and the second end of hollow rotating shaft extends to the terminal of fuselage main body;Drilling grouting fixed assembly is installed in the front end of fuselage main body, and the center of drilling grouting fixed assembly is provided with drilling grouting working port;Drilling nail and grouting nail are selectively installed at drilling grouting working port, and drilling top or grouting nail is coaxially fixedly connected with the first end of hollow rotating shaft;The grouting inlet of grouting nail is communicated with grouting passage, and the second end of hollow rotating shaft can be communicated with preset grouting pipeline;The utility model integrates drilling and grouting function in single device, greatly reduces the operation difficulty and equipment cost of construction personnel, and then effectively improves construction efficiency.

Description

Technical Field

[0001] This utility model belongs to the field of building repair and reinforcement technology, and relates to concrete structure repair technology, and in particular to a drilling and grouting device for repairing concrete cracks. Background Technology

[0002] Concrete often develops cracks due to the passage of time, external environmental factors (such as changes in temperature and humidity, chemical corrosion, etc.), and load effects. The traditional process for repairing concrete cracks usually involves drilling and grouting. Specifically, the concrete to be repaired is first drilled, and then grout is injected through the drilled grouting holes. Currently, specialized drilling and grouting equipment is required for drilling and grouting operations, which greatly increases the cost of construction equipment and personnel, often resulting in the efficiency and quality of crack repair work failing to meet expectations. Utility Model Content

[0003] In view of the technical problems existing in the prior art, this utility model provides a drilling and grouting device for concrete crack repair, which solves the technical problem that the need to use special drilling and grouting equipment in drilling construction and grouting operations greatly increases the cost of construction equipment and personnel input, and often leads to the failure of crack repair construction efficiency and quality to meet the expected goals.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows: This utility model provides a drilling and grouting device for repairing concrete cracks, including a main body, a hollow rotating shaft, a drilling and grouting fixing component, drilling nails and grouting nails; The hollow rotating shaft is rotatably disposed inside the main body of the machine body, and a grouting channel is provided at the center of the hollow rotating shaft; wherein, the first end of the hollow rotating shaft extends to the front end of the main body of the machine body, and the second end of the hollow rotating shaft extends to the end of the main body of the machine body; The drilling and grouting fixing assembly is installed at the front end of the main body of the machine body, and the drilling and grouting fixing assembly has a drilling and grouting working port at its center; The drilling nail and the grouting nail are selectively installed at the drilling and grouting working port, and the top of the drilling or the grouting nail is coaxially and fixedly connected to the first end of the hollow rotating shaft; wherein, the grouting inlet of the grouting nail is connected to the grouting channel, and the second end of the hollow rotating shaft can be connected to a preset grouting pipeline.

[0005] Furthermore, the drilling and grouting fixing assembly includes a fixing base, a drilling nail mounting interface, and a grouting nail mounting interface; The fixing seat is installed at the front end of the main body of the machine body, and a drilling and grouting working port is provided at the center of the fixing seat; a fixing seat slide is provided on the front end face of the fixing seat, and the fixing seat slide is symmetrically arranged on both sides of the drilling and grouting working port. Both the drilling nail mounting interface and the grouting nail mounting interface can be slidably disposed within the mounting base slide; wherein, the drilling nail mounting interface is used to cooperate and connect with the fixed end of the drilling nail; and the grouting nail mounting interface is used to cooperate and connect with the fixed end of the grouting nail.

[0006] Furthermore, the side wall of the fixed seat slide is also provided with an interface buckle, which is used to fix the drilling nail installation interface or the grouting nail installation interface at a preset position of the fixed seat slide.

[0007] Furthermore, a first telescopic spring is provided between the drilling nail installation interface and the end of the fixed seat slide, and a second telescopic spring is provided between the grouting nail installation interface and the end of the fixed seat slide.

[0008] Furthermore, the drill nail includes a drill nail connecting sleeve and a drill rod body that are coaxially connected; The inner side of the first end of the drill nail connecting sleeve is fixedly engaged with the outer side of the first end of the hollow rotating shaft, the outer side of the first end of the drill nail connecting sleeve is rotatably engaged with the drill nail mounting interface, and the second end of the drill nail connecting sleeve is fixedly connected to the drill rod body.

[0009] Furthermore, the drill rod body adopts a helical drill rod.

[0010] Furthermore, the grouting nail includes a grouting nail connecting sleeve and a grouting nail body that are coaxially connected; The inner side of the first end of the grouting nail connecting sleeve is fixedly engaged with the outer side of the first end of the hollow rotating shaft, the outer side of the first end of the grouting nail connecting sleeve is fixedly engaged with the grouting nail installation interface, and the second end of the grouting nail connecting sleeve is fixedly connected to the grouting nail body.

[0011] Furthermore, the grouting nail body has a hexagonal cross-section, and a waterproof needle is provided at the end of the grouting nail body.

[0012] Furthermore, it also includes a drive motor, a drive gear, and a driven gear; the drive gear is fixed on the output shaft of the drive motor, the driven gear is fixed on the outside of the hollow rotating shaft, and the drive gear and the driven gear mesh with each other.

[0013] Furthermore, a shock-absorbing base is provided at the bottom of the end of the main body, and a handle is provided at the bottom of the front end of the main body.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows: This utility model provides a drilling and grouting device for repairing concrete cracks. It integrates drilling and grouting functions into a single device, eliminating the need for repeated tool changes in traditional multi-stage construction. This significantly reduces the operational difficulty and equipment cost for construction workers, thereby effectively improving construction efficiency. Furthermore, by using the drilling and grouting port as a guide, it effectively ensures a perfect match between the drill hole diameter and the grouting nail diameter, completely solving problems such as grout material leakage and uneven filling caused by dimensional deviations in traditional processes, thus improving the quality of concrete crack repair. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 A schematic diagram of the overall structure of the drilling and grouting device for repairing concrete cracks provided in the embodiment; Figure 2 This is a schematic diagram of the drilling and grouting fixing assembly in the embodiment; Figure 3 This is a schematic diagram of the drill nail structure in the embodiment; Figure 4 This is a schematic diagram of the grouting nail structure in the embodiment.

[0017] The components include: 1. Main body, 2. Drive motor, 3. Drive gear, 4. Driven gear, 5. Hollow rotating shaft, 6. Drilling and grouting fixing assembly, 7. Drilling nail, 8. Grouting nail, 9. Power module, 10. Shock-absorbing base, 11. Handle, 12. Motor switch; 601. Fixing seat, 602. Fixing seat slide, 603. Drilling and grouting working port, 604. Drilling nail installation interface, 605. Grouting nail installation interface, 606. Interface buckle, 607. First telescopic spring, 608. Second telescopic spring; 701. Drilling nail connecting sleeve, 702. Drill rod body; 801. Grouting nail connecting sleeve, 802. Grouting nail body, 803. Waterproof needle. Detailed Implementation

[0018] To make the technical problems, technical solutions, and beneficial effects solved by this application clearer, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0019] This utility model provides a drilling and grouting device for repairing concrete cracks, including a main body 1, a hollow rotating shaft 5, a drilling and grouting fixing component 6, drilling nails 7, and grouting nails 8; the hollow rotating shaft 5 is rotatably disposed inside the main body 1, and a grouting channel is provided at the center of the hollow rotating shaft 5; wherein, the first end of the hollow rotating shaft 5 extends to the front end of the main body 1, and the second end of the hollow rotating shaft 5 extends to the end of the main body 1.

[0020] The drilling and grouting fixing assembly 6 is installed at the front end of the main body 1, and a drilling and grouting working port 603 is provided at the center of the drilling and grouting fixing assembly 6; the drilling nail 7 and the grouting nail 8 are selectively installed at the drilling and grouting working port 603, and the drilling top 7 or the grouting nail 8 is coaxially and fixedly connected to the first end of the hollow rotating shaft 5; wherein, the grout inlet of the grouting nail 8 is in communication with the grouting channel, and the second end of the hollow rotating shaft 5 can be connected to a preset grouting pipeline.

[0021] In the above embodiments, by rotatably mounting the hollow rotating shaft 5 inside the main body 1 and providing a grouting channel, and cooperating with the drilling and grouting fixing component 6 and the optional drilling nails 7 and grouting nails 8, the same device can flexibly switch between drilling and grouting functions; there is no need to use separate dedicated drilling and grouting equipment for concrete crack repair construction, which effectively reduces construction equipment costs and personnel input, while avoiding the connection problems caused by equipment switching and personnel operating different equipment, thereby improving the efficiency of crack repair construction. Moreover, due to the overall design and functional integration of the device, it is more conducive to ensuring the stability and reliability of construction quality and achieving the expected repair goals.

[0022] The following detailed description of the drilling and grouting device for repairing concrete cracks provided by this utility model uses specific embodiments.

[0023] Example As attached Figure 1-4 As shown, this embodiment provides a drilling and grouting device for repairing concrete cracks, including a main body 1, a drive motor 2, a drive gear 3, a driven gear 4, a hollow rotating shaft 5, a drilling and grouting fixing assembly 6, drilling nails 7, grouting nails 8, a power module 9, a shock-absorbing base 10, and a handle 11.

[0024] The main body 1 includes a horizontal section and a vertical section. The vertical section is fixed below the end of the horizontal section, making the main body 1 have an overall L-shaped structure. The drive motor 2, the driving gear 3, the driven gear 4, and the hollow rotating shaft 5 are all installed inside the horizontal section. The drive motor 2 provides power for the rotation of the hollow rotating shaft 5. The driving gear 3 and the driven gear 4 serve as transmission mechanisms between the drive motor 2 and the hollow rotating shaft 5, so as to transmit the power output by the drive motor 2 to the hollow rotating shaft 5.

[0025] The hollow rotating shaft 5 is rotatably disposed inside the horizontal section; wherein, the first end of the hollow rotating shaft 5 extends to the front end of the main body 1, and the second end of the hollow rotating shaft 5 extends to the end of the main body 1; the first end of the hollow rotating shaft 5 is used to connect with the drilling nail 7 or the grouting nail 8, and the second end of the hollow rotating shaft 5 is used to connect with a preset grouting pipeline; a grouting channel is provided at the center of the hollow rotating shaft 5, and the grouting channel is arranged along the center of the hollow rotating shaft 5; that is, one end of the grouting channel is connected to the first end of the hollow rotating shaft 5, and the other end of the grouting channel is connected to the second end of the hollow rotating shaft 5.

[0026] The drive motor 2 is disposed inside the horizontal section and located below the hollow rotating shaft 5; wherein, the output shaft of the drive motor 2 is parallel to the axis of the hollow rotating shaft 5; the driving gear 3 is fixed on the output shaft of the drive motor 2, the driven gear 4 is fixed on the outside of the hollow rotating shaft 5, and the driving gear 3 and the driven gear 4 mesh with each other.

[0027] The drilling and grouting fixing assembly 6 is installed at the front end of the main body 1. The drilling and grouting fixing assembly 6 is used to fix and connect the drilling nail 7 or the grouting nail 8 to the hollow rotating shaft 5. The drilling and grouting fixing assembly 6 has a drilling and grouting working port 603 at its center. The drilling nail 7 and the grouting nail 8 are selectively installed at the drilling and grouting working port 603. When the drilling nail 7 is installed at the drilling and grouting working port 603, the drilling nail 7 is coaxially and fixedly connected to the first end of the hollow rotating shaft 5. When the grouting nail 8 is installed at the drilling and grouting working port 603, the grouting nail 8 is coaxially and fixedly connected to the first end of the hollow rotating shaft 5, and the grout inlet of the grouting nail 8 is connected to the grouting channel. At this time, the second end of the hollow rotating shaft 5 is connected to the preset grouting pipeline.

[0028] Specifically, the drilling and grouting fixing assembly 6 includes a fixing base 601, a drilling nail installation interface 604, a grouting nail installation interface 605, an interface buckle 606, a first telescopic spring 607, and a second telescopic spring 608.

[0029] The fixing base 601 is installed at the front end of the main body 1 and is coaxially fixedly connected to the horizontal section of the main body 1. A drilling and grouting working port 603 is provided at the center of the fixing base 601. One end of the drilling and grouting working port 603 is connected to the front end face of the fixing base 601, and the other end of the drilling and grouting working port 603 is connected to the rear end face of the fixing base 691. The drilling and grouting working port 603 is coaxially arranged with the hollow rotating shaft 5 and is used as the installation port for the drilling nail 7 or the grouting nail 8.

[0030] The front end face of the fixing seat 601 is provided with a fixing seat slide 602, which is symmetrically arranged on both sides of the drilling grouting working port 603 and radially arranged along the front end face of the fixing seat 601. The drilling nail installation interface 604 and the grouting nail installation interface 605 can be slidably arranged in the fixing seat slide 602. The drilling nail installation interface 604 is used to cooperate with the fixed end of the drilling nail 7. The grouting nail installation interface is used to cooperate with the fixed end of the grouting nail 8. The drilling nail installation interface 604 and the grouting nail installation interface 605 are respectively arranged on both sides of the drilling grouting working port 603.

[0031] The interface buckle 606 is disposed on the side wall of the fixed base slide 602. One end of the interface buckle 606 is connected to the fixed base slide 602, and the other end of the interface buckle 606 extends toward the center of the fixed base slide 602. The interface buckle 606 is used to fix the drill nail installation interface 604 or the grouting nail installation interface 605 to a predetermined position on the fixed base slide 602. Preferably, the interface buckle 606 is a telescopic buckle structure or a fixed buckle structure that is detachable from the fixed base slide 602.

[0032] Specifically, the interface clip 606 includes a first interface clip, a second interface clip, a third interface clip, and a fourth interface clip; the first interface clip and the second interface clip are symmetrically arranged on both sides of the drilling and grouting working port 603, and are used to fix and restrict the drilling nail installation interface 604 or the grouting nail installation interface 605 at the position of the drilling and grouting working port 603; the third interface clip is arranged near the first end of the fixing seat slide 602, and is used to fix and restrict the drilling nail installation interface 604 in a non-working state at a preset position near the first end of the fixing seat slide 602; the fourth interface clip is arranged near the second end of the fixing seat slide 602, and is used to fix and restrict the grouting nail installation interface 605 in a non-working state at a preset position near the second end of the fixing seat 602.

[0033] It should be noted that when drilling is required, the drill nail installation interface 604 is moved to the position of the drilling grouting port 603. At this time, the drill nail installation interface 604 is in working state, so as to install the drill nail 7 at the drilling grouting port 603 using the drill nail installation interface 604. When grouting is required, the grouting nail installation interface 605 is moved to the position of the drilling grouting port 603. At this time, the grouting nail installation interface 605 is in working state, so as to install the grouting nail 8 at the drilling grouting port 603 using the grouting nail installation interface 605.

[0034] The first telescopic spring 607 is disposed between the drill pin mounting interface 604 and the first end of the fixed seat slide 602. One end of the first telescopic spring 607 is connected to the drill pin mounting interface 604, and the other end of the first telescopic spring 607 is connected to the first end of the fixed seat slide 602. The first telescopic spring 607 is used to apply a spring force to the drill pin mounting interface 604, thereby forming an auxiliary limit on the drill pin mounting interface 604 and preventing the drill pin mounting interface 604 from sliding within the fixed seat slide 602 when it is not in operation.

[0035] The second telescopic spring 608 is disposed between the grouting nail mounting interface 605 and the second end of the fixed seat slide 602. One end of the second telescopic spring 608 is connected to the grouting nail mounting interface 605, and the other end of the second telescopic spring 608 is connected to the second end of the fixed seat slide 602. The second telescopic spring 608 is used to apply a spring force to the grouting nail mounting interface 605, thereby forming an auxiliary limit on the grouting nail mounting interface 605 and preventing the grouting nail mounting interface 605 from sliding within the fixed seat slide 602 when it is not in operation.

[0036] The drill pin 7 includes a drill pin connecting sleeve 701 and a drill rod body 702. The drill pin connecting sleeve 701 is coaxially connected to the drill rod body 702. The inner side of the first end of the drill pin connecting sleeve 701 is fixedly engaged with the outer side of the first end of the hollow rotating shaft 5. The outer side of the first end of the drill pin connecting sleeve 701 is rotatably engaged with the drill pin mounting interface 604. The second end of the drill pin connecting sleeve 701 is fixedly connected to the drill rod body 702. Preferably, the drill rod body 702 is a spiral drill rod to facilitate the drilling and shaping of the grouting hole.

[0037] The grouting nail 8 includes a grouting nail connecting sleeve 801, a grouting nail body 802, and a waterproof needle 803. The grouting nail connecting sleeve 801 is coaxially arranged with the grouting nail body 802. The inner side of the first end of the grouting nail connecting sleeve 801 is fixedly engaged with the outer side of the first end of the hollow rotating shaft 5. The outer side of the first end of the grouting nail connecting sleeve 801 is fixedly engaged with the grouting nail installation interface 605. The second end of the grouting nail connecting sleeve 801 is fixedly connected to the grouting nail body 802, and the grout inlet of the grouting nail 8 is in communication with the grouting channel. Preferably, the grouting nail body 802 has a hexagonal cross-section. The waterproof needle 803 is installed at the front end of the grouting nail body 802 to prevent grout backflow during grouting.

[0038] The power module 9 is located within the vertical section of the main body 1 and is used to provide power to the drive motor 2. The output terminal of the power module 9 is connected to the power supply terminal of the drive motor 2. The motor switch 12 is located on the side of the vertical section of the main body 1 and is electrically connected to the drive motor 2 to control the start and stop of the drive motor 2. A shock-absorbing base 10 is provided at the bottom end of the main body 1, that is, the shock-absorbing base is located at the bottom end of the vertical section of the main body 1. The handle 11 is located below the front end of the main body 1, that is, the handle 11 is fixed below the front end of the horizontal section of the main body 1.

[0039] Working principle: The working process of the drilling and grouting device for repairing concrete cracks according to this utility model includes a drilling working mode and a grouting working mode. In the drilling working mode, the drilling nail 7 is installed at the drilling and grouting working port 603 using the drilling nail installation interface 604. In the grouting working mode, the grouting nail 8 is installed at the drilling and grouting working port 603 using the grouting nail installation interface 605.

[0040] Specifically, the working process of the drilling mode is as follows: First, open or remove the first and third interface clips, and move the drill nail installation interface 604 along the fixed seat slide 602 to the drilling grouting working port 603; then, reinstall or close the first interface clip to fix the drill nail installation interface 604 at the drilling grouting working port 603 using the first and second interface clips; next, select a drill nail 7 of a preset size according to the size of the concrete crack; install the drill nail 7 in the drill nail installation interface 604, and ensure that the drill nail 7... The connecting sleeve 701 is fixedly engaged with the first end of the hollow rotating shaft 5; then, the drive motor 2 is turned on, and the drive motor 2 drives the hollow rotating shaft 5 to rotate, which in turn drives the drill nail 7 to rotate to start drilling the grouting hole; after the grouting hole construction is completed, the drive motor is turned off; the drill nail 7 is removed from the drill nail installation interface 604; the first interface buckle is opened or removed again, and the drill nail installation interface 604 is pushed to move along the fixed seat slide 602 to the starting position; finally, the first interface buckle and the third interface buckle are reinstalled or closed.

[0041] Specifically, the working process of the grouting operation is as follows: First, open or remove the fourth interface clip and the second interface clip, and move the grouting nail installation interface 605 along the fixed seat slide 602 to the drilling grouting working port 603; then, reinstall or close the second interface clip to fix the grouting nail installation interface 605 at the drilling grouting working port 603 using the first interface clip and the second interface clip; select a grouting nail 8 that matches the grouting hole, install the grouting nail 8 in the grouting nail installation interface 605, and make the grout inlet of the grouting nail 8 connected with the grouting channel; then, start the grouting operation; after grouting is completed, remove the grouting nail 8 from the grouting nail installation interface 605; open or remove the second interface clip again, and push the grouting nail installation interface 605 along the fixed seat slide 602 to the starting position; finally, reinstall or close the second interface clip and the fourth interface clip.

[0042] In this embodiment, the shock-absorbing base 10 is installed at the bottom end of the main body 1 to support and lift the machine. The drive motor 2 provides rotational power to the hollow shaft 5. During drilling, the power module 9 generates electrical energy and transmits it to the drive motor 2 through the hollow shaft 5, causing the drive gear 3 to rotate, which in turn drives the driven gear 4, thus enabling the hollow shaft 5 to operate normally. Both ends of the hollow shaft 5 are threaded to facilitate the connection of the drilling nails 7 and the grouting nails 8. The drilling and grouting fixing assembly 6 is fixed to the front end of the main body 1. A drilling and grouting working port 603 is provided on the front end face of the drilling and grouting fixing assembly 6. Fixing seat slides 602 are provided on both sides of the drilling and grouting working port 603. A drilling nail installation interface 604 and a grouting nail installation interface 605 are provided in the fixing seat slides 602. In the non-working state, the drilling nails are installed... The mounting interface 604 and the grouting nail mounting interface 605 are respectively fixed to both ends of the fixed seat slide 602 by interface buckles and are set away from the drilling and grouting working port 603; the drilling nail mounting interface 604 and the grouting nail mounting interface 605 are respectively connected to the end of the fixed seat slide 602 by telescopic springs; the grouting nail body 802 adopts a hexagonal grouting nail with good fixation, and the drill rod body adopts a spiral drill rod that is easy to drill; by setting connecting sleeves on the drilling nail 7 and the grouting nail 8, it is easy to connect with the first end of the hollow rotating shaft 5; by setting a waterproof needle 803 at the end of the grouting nail body 802, it can be ensured that the grout does not flow back during the grouting process; the end of the spiral drill rod is equipped with a drill bit with high hardness, so that it can easily drill holes with less kinetic energy and will not damage other areas of the concrete.

[0043] The drilling and grouting device described in this utility model integrates drilling and grouting functions into a single device. It employs a quick-switching mechanism using a retractable spring and connecting clips to achieve automatic alignment and fixation of the drilling nails and grouting nails, eliminating the tedious steps of repeatedly disassembling tools and repositioning in traditional step-by-step operations. Simultaneously, the integrated operation driven by a motor reduces manual intervention and shortens the repair cycle. By setting a connecting sleeve to standardize the dimensions of the drilling nails and grouting nails, and utilizing the precise guiding function of the drilling and grouting working port, it ensures a perfect match between the drilling hole diameter and the grouting nail diameter, completely solving problems such as grout material leakage and uneven filling caused by dimensional deviations in traditional processes. This utility model achieves precise drilling and grouting operations on cracks in concrete structures through mechanized equipment, thereby improving repair efficiency, ensuring uniform material filling of cracks, and enhancing the overall strength and durability of the structure.

[0044] The above embodiments are merely one of the implementation methods to achieve the technical solution of this utility model. The scope of protection claimed by this utility model is not limited to this embodiment, but also includes any variations, substitutions and other implementation methods that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this utility model.

Claims

1. A drilling and grouting device for repairing concrete cracks, characterized in that, It includes the main body of the fuselage (1), the hollow rotating shaft (5), the drilling and grouting fixing assembly (6), the drilling nail (7) and the grouting nail (8). The hollow shaft (5) is rotatably disposed inside the main body (1) of the machine body, and a grouting channel is provided in the center of the hollow shaft (5); wherein, the first end of the hollow shaft (5) extends to the front end of the main body (1) of the machine body, and the second end of the hollow shaft (5) extends to the end of the main body (1); The drilling and grouting fixing assembly (6) is installed at the front end of the main body (1), and a drilling and grouting working port (603) is provided at the center of the drilling and grouting fixing assembly (6). The drilling nail (7) and the grouting nail (8) are selected to be installed at the drilling grouting working port (603), and the drilling nail (7) or the grouting nail (8) is coaxially fixedly connected to the first end of the hollow rotating shaft (5); wherein, the grout inlet of the grouting nail (8) is connected to the grouting channel, and the second end of the hollow rotating shaft (5) can be connected to the preset grouting pipeline.

2. The drilling and grouting device for repairing concrete cracks according to claim 1, characterized in that, The drilling and grouting fixing assembly (6) includes a fixing base (601), a drilling nail mounting interface (604), and a grouting nail mounting interface (605). The fixing seat (601) is installed at the front end of the main body (1), and a drilling grouting working port (603) is provided at the center of the fixing seat (601); a fixing seat slide (602) is provided on the front end face of the fixing seat (601), and the fixing seat slide (602) is symmetrically arranged on both sides of the drilling grouting working port (603). Both the drilling nail mounting interface (604) and the grouting nail mounting interface (605) can be slidably disposed within the fixed seat slide (602); wherein, the drilling nail mounting interface (604) is used to cooperate and connect with the fixed end of the drilling nail (7); the grouting nail mounting interface is used to cooperate and connect with the fixed end of the grouting nail (8).

3. The drilling and grouting device for repairing concrete cracks according to claim 2, characterized in that, An interface buckle (606) is also provided on the side wall of the fixed seat slide (602). The interface buckle (606) is used to fix the drill nail installation interface (604) or the grouting nail installation interface (605) at a preset position on the fixed seat slide (602).

4. A drilling and grouting device for repairing concrete cracks according to claim 2, characterized in that, A first telescopic spring (607) is provided between the drill nail mounting interface (604) and the end of the fixed seat slide (602), and a second telescopic spring (608) is provided between the grouting nail mounting interface (605) and the end of the fixed seat slide (602).

5. A drilling and grouting device for repairing concrete cracks according to claim 2, characterized in that, The drill nail (7) includes a drill nail connecting sleeve (701) and a drill rod body (702) that are coaxially connected. The inner side of the first end of the drill nail connecting sleeve (701) is fixedly engaged with the outer side of the first end of the hollow rotating shaft (5), the outer side of the first end of the drill nail connecting sleeve (701) is rotatably engaged with the drill nail mounting interface (604), and the second end of the drill nail connecting sleeve (701) is fixedly connected to the drill rod body (702).

6. A drilling and grouting device for repairing concrete cracks according to claim 5, characterized in that, The drill pipe body (702) adopts a spiral drill pipe.

7. A drilling and grouting device for repairing concrete cracks according to claim 2, characterized in that, The grouting nail (8) includes a grouting nail connecting sleeve (801) and a grouting nail body (802) that are coaxially connected. The inner side of the first end of the grouting nail connecting sleeve (801) is fixedly engaged with the outer side of the first end of the hollow rotating shaft (5), the outer side of the first end of the grouting nail connecting sleeve (801) is fixedly engaged with the grouting nail installation interface (605), and the second end of the grouting nail connecting sleeve (801) is fixedly connected with the grouting nail body (802).

8. A drilling and grouting device for repairing concrete cracks according to claim 7, characterized in that, The grouting nail body (802) has a hexagonal cross-section, and a waterproof needle (803) is provided at the end of the grouting nail body (802).

9. A drilling and grouting device for repairing concrete cracks according to claim 1, characterized in that, It also includes a drive motor (2), a drive gear (3) and a driven gear (4); the drive gear (3) is fixed on the output shaft of the drive motor (2), and the driven gear (4) is fixed on the outside of the hollow rotating shaft (5). The drive gear (3) and the driven gear (4) mesh with each other.

10. A drilling and grouting device for repairing concrete cracks according to claim 1, characterized in that, A shock-absorbing base (10) is provided at the bottom end of the main body (1), and a handle (11) is provided at the bottom front end of the main body (1).

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