Concrete crack repair material preparation device and method

Abstract

The invention relates to the technical field of concrete engineering, and specifically to a concrete crack repair material preparation device, comprising a shell, a cylinder and a mixing box are installed on the shell, a liquid inlet and a liquid outlet are provided at one end of each cylinder, each liquid outlet is connected to the mixing box, a first one-way valve is installed at each liquid outlet, a second one-way valve is installed at each liquid inlet, each cylinder is slidably connected to a piston rod, a driven wheel is rotatably connected to the shell, a mixing unit is installed in the mixing box, a rotating shaft is rotatably connected to the shell, a first driving wheel and a second driving wheel are installed on the rotating shaft, an adjusting unit is installed at each driven wheel, each driven wheel is connected to the first driving wheel through the adjusting unit, forming a structure in which each piston rod slides relative to the cylinder through the rotation of the rotating shaft, so that liquid enters each cylinder from the liquid inlet or liquid flows into the mixing box from the liquid outlet for mixing, an injection port is provided on the mixing box, and the invention is convenient for batching grouting materials and configuring grouting materials of different proportions.

Description

Technical Field

[0001] The invention relates to the technical field of concrete engineering, in particular to a device and method for preparing concrete crack repairing materials. Background Art

[0002] Concrete is one of the most important civil engineering materials in contemporary times. It has the advantages of low cost, high compressive strength and good durability, and is widely used in all walks of life. Generally, buildings constructed with concrete have a long continuous use time, and at least need to be guaranteed to be used for decades without problems. However, concrete is prone to cracks due to internal and external reasons during use, which will greatly affect the strength and stability of the building, seriously threatening people's lives and property safety. When repairing fine cracks, construction joints, cold joints and rock foundation cracks in concrete structures, grouting materials are generally used for grouting treatment to restore the integrity of the structure to achieve the purpose of anti-seepage, reinforcement and reinforcement. The grouting material is composed of AB type liquid material. When preparing the grouting material, the existing preparation device needs to weigh, mix and stir the components of the grouting material. After use, it needs to be reconfigured according to the above steps. The operation is more troublesome and it is not convenient to batch the repair material. Summary of the invention

[0003] In view of the shortcomings of the prior art and to overcome the defects of the prior art, the purpose of the present invention is to provide a concrete crack repair material preparation device and method to solve the problem that the existing device is not convenient for batching the repair material.

[0004] The technical scheme is that the concrete crack repair material preparation device comprises a shell, a cylinder and a mixing box are installed on the shell, a liquid inlet and a liquid outlet are provided at one end of each cylinder, each liquid outlet is communicated with the mixing box, a first one-way valve is installed at each liquid outlet, a second one-way valve is installed at each liquid inlet, each cylinder is slidably connected to a piston rod, a driven wheel for driving the piston rod to move relative to the cylinder is rotatably connected to the shell, a stirring unit for stirring the material in the mixing box is installed on the mixing box, a rotating shaft is rotatably connected to the shell, a first driving wheel for driving the driven wheel to rotate and a second driving wheel for driving the stirring unit to rotate are installed on the rotating shaft, an adjusting unit for adjusting the speed ratio of the first driving wheel to the driven wheel is installed at each driven wheel, each driven wheel is transmission-connected to the first driving wheel through the adjusting unit, forming a structure in which each piston rod slides relative to the cylinder through the rotation of the rotating shaft, so that liquid enters each cylinder from the liquid inlet or liquid flows into the mixing box from the liquid outlet for stirring, and an injection port is provided on the mixing box.

[0005] Preferably, each of the adjusting units includes a connecting shaft, the connecting shaft is fixedly connected to the driven wheel, the peripheral side of the connecting shaft is fixedly connected to a bracket, the bracket is slidably connected to a slider, the sliding direction of each slider and the bracket is perpendicular to the axial direction of the connecting shaft, the connecting shaft is slidably connected to a mounting frame along its axial direction, the mounting frame is slidably connected to the slider, the sliding directions of the mounting frame and the slider are inclined to the axial direction of the connecting shaft, an adjusting rod for adjusting the relative position of the mounting frame and the connecting shaft is installed between the connecting shaft and the mounting frame, each of the sliders forms an annular structure surrounding the axis of the connecting shaft, and the annular structure is transmission-connected to the first driving wheel.

[0006] Preferably, the stirring unit includes a stirring shaft, which is rotatably connected to a stirring box, the portion of the stirring shaft located inside the stirring box is fixedly connected to a stirring blade, the portion of the stirring shaft extending out of the stirring box is fixedly connected to a rotating wheel, and the rotating wheel is transmission-connected to a second driving wheel.

[0007] Preferably, each of the cylinders is slidably connected to the shell, and a limiting member for fixing the cylinder and the shell is installed at the connection between each of the cylinders and the shell.

[0008] Preferably, a liquid inlet tube is installed at the liquid inlet, an injection needle is installed at the injection port, and a rotating handle is installed on the rotating shaft.

[0009] Preferably, the sliders are evenly distributed in a ring shape around the axis of the connecting shaft, and the distances between the sliders and the axis of the connecting shaft are the same.

[0010] Preferably, the adjusting rod is rotatably connected to the connecting shaft, and the adjusting rod is threadedly connected to the mounting bracket.

[0011] The method for preparing the concrete crack repair material comprises the following steps:

[0012] a. Adjust the speed ratio of each driven wheel to the first driving wheel through each adjustment unit, and adjust the relative position of each cylinder and the shell so that the piston rod contacts the liquid inlet;

[0013] b. Rotate the rotating shaft to allow the liquid to enter the cylinder in proportion. With the injection port facing upward, rotate the rotating shaft in the opposite direction to allow the liquid to enter the mixing box from the cylinder in proportion. At the same time, the stirring unit stirs the liquid. When the air in the mixing box is discharged, stop rotating the rotating shaft.

[0014] Preferably, in the process of adjusting the speed ratio between each driven wheel and the first driving wheel, when the speed ratio between a part of each driven wheel and the first driving wheel becomes larger, the speed ratio between the remaining part of each driven wheel and the first driving wheel becomes smaller.

[0015] The present invention provides a concrete crack repair material preparation device and method, which have the following beneficial effects compared with the prior art:

[0016] 1. When in use, one material in the AB formulation liquid is extracted through one cylinder, and another material in the AB formulation liquid is extracted through another cylinder. When the rotating shaft rotates, each piston rod slides relative to the cylinder, thereby extracting the grouting material of the AB formulation liquid. When the rotating shaft rotates in the opposite direction, the AB formulation liquid enters the mixing box and is stirred by the stirring unit. During the grouting process, the grouting material can be injected into the crack for repair by moving the piston rod. When the rotating shaft rotates a certain angle, due to the different speed ratios of each driven wheel and the driven wheel, the sliding distance of each piston rod relative to the cylinder is different, so that each cylinder extracts or stirs and mixes the AB formulation liquid in proportion. The speed ratio of each driven wheel and the driven wheel is adjusted by the adjusting unit, which is convenient for configuring grouting materials of different proportions. After the liquid in the cylinder is injected, the same grouting material as the previous time can be configured again by rotating the rotating shaft. The operation is simple and convenient for batching the grouting material. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a front cross-sectional schematic diagram of the present invention.

[0018] Figure 2 It is a rear cross-sectional schematic diagram of the present invention.

[0019] Figure 3 It is an enlarged schematic diagram of the right side view of the adjustment unit of the present invention.

[0020] Figure 4 It is an enlarged schematic diagram of the right side view of the slider of the present invention.

[0021] Figure 5 It is an enlarged schematic diagram of the AA-direction bracket of the present invention.

[0022] Figure 6 It is an enlarged schematic diagram of the front view of the mounting frame of the present invention.

[0023] Figure 7 It is an enlarged schematic diagram of the front view of the mounting frame and the sliding block of the present invention.

[0024] Figure 8 It is a partial enlarged schematic diagram of the adjusting unit of the present invention.

[0025] Fig. 9 It is a rear cross-sectional schematic diagram of the second driving wheel of the present invention.

[0026] Fig.10 It is a rear view schematic diagram of the present invention.

[0027] Fig.11 It is a front view schematic diagram of the present invention.

[0028] In the figure: 1 shell, 1.1 limit block, 2 cylinder, 2.1 liquid inlet, 2.2 liquid outlet, 3 mixing box, 3.1 injection port, 4 piston rod, 4.1 piston block, 4.2 push rod, 5 first one-way valve, 6 second one-way valve, 7 driven wheel, 8 rack, 9 stirring unit, 9.1 stirring shaft, 9.2 stirring blade, 9.3 rotating wheel, 10 rotating shaft, 11 first driving wheel, 12 second driving wheel, 13 adjusting unit, 13.1 connecting shaft, 13.2 bracket, 13.2A fan-shaped plate, 13.2B gap, 13.3 slider, 13.4 mounting frame, 13.4A horizontal plate, 13.4B support plate, 13.5 adjusting rod, 14 belt, 15 limiter, 16 liquid inlet pipe, 17 injection needle, 18 rotating handle, 19 toothed synchronous belt. DETAILED DESCRIPTION

[0029] The technical solutions of various embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work belong to the scope of protection of the present invention. In the description of the present invention, it should be noted that the orientation or position relationship indicated by the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0030] In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance. In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0031] The present invention is further described in detail below through specific implementation examples in conjunction with the accompanying drawings.

[0032] See also Figure 1-11The present invention provides a technical solution: a concrete crack repair material preparation device, including a shell 1, a cylinder 2 and a mixing box 3 are installed on the shell 1, the mixing box 3 is bonded and fixed to the shell 1, or the mixing box 3 and the shell 1 are an integrated structure, the number of cylinders 2 is two, one end of each cylinder 2 is provided with a liquid inlet 2.1 and a liquid outlet 2.2, each liquid outlet 2.2 is connected to the mixing box 3 through a hose, a first one-way valve 5 is installed at each liquid outlet 2.2, the liquid outlet 2.2 is connected to the hose through the first one-way valve 5, a second one-way valve 6 is installed at each liquid inlet 2.1, each cylinder 2 is slidably connected to a piston rod 4, wherein the piston rod 4 includes a piston block 4.1 made of rubber material, and a push rod 4.2, the piston block 4.1 is fixedly connected with the push rod 4.2 by snapping, or can be fixed by bonding, the piston block 4.1 is slidably connected with the cylinder 2, and the shell 1 is rotatably connected with a driven wheel 7 for driving the piston rod 4 to move relative to the cylinder 2, wherein the push rod 4.2 is slidably connected with the limit block 1.1 on the shell 1, and a rack 8 is arranged on the push rod 4.2. The number of driven wheels 7 is the same as the number of the cylinder 2 and the piston rod 4. The driven wheel 7 is a gear. Through the cooperation of the driven wheel 7 and the rack 8, when the driven wheel 7 rotates, the piston rod 4 slides relative to the cylinder 2, and the mixing box 3 is installed with a mixing unit 9 for stirring the material in the mixing box 3. The shell 1 is rotatably connected with a rotating shaft 10, and the rotating shaft 10 is installed with a first main shaft for driving the driven wheel 7 to rotate The first driving wheel 11 and the second driving wheel 12 for driving the stirring unit 9 to rotate are fixed to the rotating shaft 10 by bonding, or can be fixed by key connection. An adjusting unit 13 for adjusting the speed ratio of the first driving wheel 11 and the driven wheel 7 is installed at each driven wheel 7. Each driven wheel 7 is connected to the first driving wheel 11 by transmission through the adjusting unit 13, so that each piston rod 4 slides relative to the cylinder 2 through the rotation of the rotating shaft 10, so that the liquid enters each cylinder 2 from the liquid inlet 2.1 or the liquid flows into the stirring box 3 from the liquid outlet 2.2 for stirring. The stirring box 3 is provided with an injection port 3.1. When the rotating shaft 10 rotates, the driven wheel 7 and the second driving wheel 1 2 rotate synchronously, the rotation of the first driving wheel 11 causes the driven wheels 7 to rotate, thereby driving the piston rod 4 to move relative to the cylinder 2. When the piston rod 4 is away from the liquid inlet 2.1, the first one-way valve 5 is closed, and the second one-way valve 6 is opened, so that the liquid is drawn into the cylinder 2. When the piston rod 4 is close to the liquid inlet 2.1, the first one-way valve 5 is opened, and the second one-way valve 6 is closed, so that the liquid flows from the cylinder 2 into the mixing box 3. The rotation of the second driving wheel 12 drives the mixing unit 9 to rotate, thereby stirring the liquid in the mixing box 3, thereby forming a rotation of the rotating shaft 10 to make the piston rods 4 slide relative to the cylinder 2, so that the liquid enters the cylinder 2 from the liquid inlet 2.1 or the liquid flows from the liquid outlet 2.2 flows into the stirring box 3 for stirring. When in use, taking the AB type HK-G-4 environmentally friendly low-viscosity epoxy grouting material as an example, one material in the AB type liquid is extracted through one cylinder 2, and another material in the AB type liquid is extracted through another cylinder 2. When the rotating shaft 10 rotates, each piston rod 4 slides relative to the cylinder 2, thereby extracting the grouting material of the AB type liquid. When the rotating shaft 10 rotates in the opposite direction, the AB type liquid enters the stirring box 3 and is stirred by the stirring unit 9. During the grouting process, the movement of the piston rod 4 can make The grouting material is injected into the crack for repair. When the rotating shaft 10 rotates a certain angle, the sliding distance of each piston rod 4 relative to the cylinder 2 is different due to the different speed ratios of each driven wheel 7 and the driven wheel 7, so that each cylinder 2 extracts or stirs and mixes the AB dosage liquid in proportion. The speed ratio of each driven wheel 7 and the driven wheel 7 is adjusted by the adjustment unit 13, which is convenient for configuring grouting materials of different proportions. After the liquid in the cylinder 2 is injected, the same grouting material as the previous time can be configured again by rotating the rotating shaft 10. The operation is simple and convenient for batching the grouting material.

[0033] In one embodiment, the number of the adjustment units 13 and the driven wheel 7 is the same, and each adjustment unit 13 includes a connecting shaft 13.1, and the connecting shaft 13.1 is fixed to the driven wheel 7 by bonding, or can be fixed by key connection, and the driven wheel 7 is rotatably connected to the housing 1 through the connecting shaft 13.1, and the peripheral side of the connecting shaft 13.1 is fixedly connected to the bracket 13.2, and the bracket 13.2 includes four sector plates 13.2A, and the four sector plates 13.2A are evenly distributed on the peripheral side of the connecting shaft 13.1 in an annular shape, and each sector plate 13.2A is fixed to the connecting shaft 13.1 by bonding, or can be fixed by welding, and there is a gap 13.2B between each sector plate 13.2A, and the sector plates in the bracket 13.2 The plate 13.2A is slidably connected to the slider 13.3, and the sliding direction of each slider 13.3 and the bracket 13.2 is perpendicular to the axial direction of the connecting shaft 13.1. There are four sliders 13.3. Each sector plate 13.2A is provided with a slide rail at the gap 13.2B. Each sector plate 13.2A is slidably connected to the slider 13.3 through the slide rail. The connecting shaft 13.1 is slidably connected to the mounting frame 13.4 along its axial direction. The radial cross section of the part of the connecting shaft 13.1 where the mounting frame 13.4 is slidably connected is square, and the rest of the radial cross section is circular. The mounting frame 13.4 is slidably connected to the slider 13.3, and the sliding of the mounting frame 13.4 and the slider 13.3 The mounting frame 13.4 includes a horizontal plate 13.4A and a support plate 13.4B. One side of the horizontal plate 13.4A is fixedly connected to the support plate 13.4B. The horizontal plate 13.4A and the support plate 13.4B are an integrated structure. There are four support plates 13.4B. The plane where each support plate 13.4B is located is perpendicular to the plane where the horizontal plate 13.4A is located. Each support plate 13.4B is slidably connected to the connecting shaft 13.1. Each support plate 13.4B can pass through the gap 13.2B between each fan-shaped plate 13.2A and is slidably connected to each fan-shaped plate 13.2A. A slide groove is provided on each support plate 13.4B. Each support plate 13.4B passes The slide groove is slidably connected to the slider 13.3, and an adjusting rod 13.5 for adjusting the relative position of the mounting frame 13.4 and the connecting shaft 13.1 is installed between the connecting shaft 13.1 and the mounting frame 13.4. Each slider 13.3 forms an annular structure surrounding the axis of the connecting shaft 13.1, and the annular structure is connected to the first driving wheel 11 with a belt transmission. Through the sliding of the mounting frame 13.4 relative to the connecting shaft 13.1, the slider 13.3 located between the mounting frame 13.4 and the bracket 13.2 moves away from the connecting shaft 13.1 or close to the connecting shaft 13.1, thereby adjusting the annular circumference of the annular structure, thereby adjusting the speed ratio of each driven wheel 7 and the first driving wheel 11.

[0034] In one embodiment, the sliders 13.3 are evenly distributed in a ring shape around the axis of the connecting shaft 13.1, and the distances between the sliders 13.3 and the axis of the connecting shaft 13.1 are the same.

[0035] In one embodiment, the annular structure is connected to the first driving wheel 11 through a toothed synchronous belt 19, and a portion of each slider 13.3 located at the transmission connection with the first driving wheel 11 is provided with teeth that match the toothed synchronous belt 19, wherein in one adjustment unit 13, two sliders 13.3 located in opposite positions are provided with teeth, and the teeth are located at the position of the slider 13.3 that contacts the toothed synchronous belt 19, and the first driving wheel 11 is a gear that matches the toothed synchronous belt 19, thereby preventing large-scale slippage of each driven wheel 7 when transmitting with the first driving wheel 11.

[0036] In one embodiment, the adjusting rod 13.5 is rotatably connected to the connecting shaft 13.1, and the adjusting rod 13.5 is threadedly connected to the transverse plate 13.4A in the mounting frame 13.4. By rotating the adjusting rod 13.5, the mounting frame 13.4 slides relative to the connecting shaft 13.1, and the relative position of the mounting frame 13.4 and the connecting shaft 13.1 is adjusted.

[0037] In one embodiment, the stirring unit 9 includes a stirring shaft 9.1, which is rotatably connected to the stirring box 3 through a shaft sleeve. A sealing ring is installed at the rotational connection between the stirring shaft 9.1 and the stirring box 3. The part of the stirring shaft 9.1 located in the stirring box 3 is bonded and fixed with stirring blades 9.2. The number of stirring blades 9.2 is a suitable number such as four. The part of the stirring shaft 9.1 extending out of the stirring box 3 is bonded and fixed with a rotating wheel 9.3, which can also be fixed by a key connection. The rotating wheel 9.3 is connected to the second driving wheel 12 through a belt 14. Through the rotation of the second driving wheel 12, the stirring unit 9 stirs the liquid in the stirring box 3.

[0038] In one embodiment, each cylinder 2 is slidably connected to the shell 1, and a limit member 15 for fixing the cylinder 2 and the shell 1 is installed at the connection between each cylinder 2 and the shell 1. There are two limit members 15, wherein a through hole is provided on the shell 1, and the shell 1 is slidably connected to the cylinder 2 through the through hole. The limit member 15 is a bolt, and the limit member 15 is threadedly connected to the shell 1. A rubber pad is clamped between the limit member 15 and the cylinder 2 to prevent the limit member 15 from damaging the side wall of the cylinder 2. By tightening the limit member 15, the cylinder 2 and the shell 1 are fixed, and by loosening the limit member 15, the cylinder 2 and the shell 1 are facilitated to slide, thereby facilitating the contact of the piston rod 4 with the liquid inlet 2.1 before extracting the liquid.

[0039] In one embodiment, a liquid inlet pipe 16 is installed at the liquid inlet 2.1, and the liquid inlet pipe 16 is also a hose. The liquid inlet 2.1 is connected to the liquid inlet pipe 16 through the second one-way valve 6. The liquid is easily extracted through the liquid inlet pipe 16. An injection needle 17 is installed at the injection port 3.1. The grouting material is easily injected into the crack through the injection needle 17. A rotating handle 18 is bonded and fixed on the rotating shaft 10. The rotating handle 18 facilitates the rotation of the rotating shaft 10. A partition is arranged on the shell 1, and each cylinder 2, the mixing box 3, and the driven wheel 7 are located on the front side of the partition. The adjustment unit 13, the first driving wheel 11, and the second driving wheel 12 are located on the rear side of the partition.

[0040] The method for preparing concrete crack repair material comprises the following steps:

[0041] (a) adjusting the speed ratio between each driven wheel 7 and the first driving wheel 11 through each adjusting unit 13, and adjusting the relative position between each cylinder 2 and the housing 1, so that the piston rod 4 contacts the liquid inlet 2.1;

[0042] (b) Rotate the rotating shaft 10 to allow the liquid to enter the cylinder 2 in proportion, point the injection port 3.1 upward, and rotate the rotating shaft 10 in the opposite direction to allow the liquid to enter the mixing box 3 from the cylinder 2 in proportion. At the same time, the mixing unit 9 stirs the liquid. When the air in the mixing box 3 is discharged, stop rotating the rotating shaft 10. During grouting, the grouting material can be injected into the crack for repair by moving the piston rod 4, and the grouting material can be stirred and mixed while being injected.

[0043] In one embodiment, during the process of adjusting the speed ratio between each driven wheel 7 and the first driving wheel 11, when the speed ratio between a portion of each driven wheel 7 and the first driving wheel 11 becomes larger, the speed ratio between the remaining portion of each driven wheel 7 and the first driving wheel 11 becomes smaller. Since each driven wheel 7 is connected to the first driving wheel 11 by a toothed synchronous belt 19, the toothed synchronous belt 19 can be in a tensioned state when in use.

[0044] The present invention has been described in detail above through specific implementation modes and embodiments, but these do not constitute limitations of the present invention. Without departing from the principles of the present invention, those skilled in the art may also make many variations and improvements, which should also be regarded as the protection scope of the present invention.

Claims

1. A concrete crack repair material preparation device, comprising a housing (1), characterized in that: The shell (1) is provided with a cylinder (2) and a mixing box (3). A liquid inlet (2.1) and a liquid outlet (2.2) are provided at one end of each cylinder (2). Each liquid outlet (2.2) is connected to the mixing box (3). A first one-way valve (5) is installed at each liquid outlet (2.2). A second one-way valve (6) is installed at each liquid inlet (2.1). Each cylinder (2) is slidably connected to a piston rod (4). A driven wheel (7) for driving the piston rod (4) to move relative to the cylinder (2) is rotatably connected to the shell (1). A stirring unit (9) for stirring the material in the mixing box (3) is installed in the mixing box. A rotating shaft (10) is rotatably connected to the shell (1). The rotating shaft (10) is connected to the rotating shaft (11). 0) is mounted on a first driving wheel (11) for driving a driven wheel (7) to rotate, and a second driving wheel (12) for driving a stirring unit (9) to rotate; an adjusting unit (13) for adjusting the speed ratio of the first driving wheel (11) to the driven wheel (7) is mounted on each of the driven wheels (7); each of the driven wheels (7) is connected to the first driving wheel (11) through the adjusting unit (13), so that each piston rod (4) slides relative to the cylinder (2) through the rotation of the rotating shaft (10), thereby allowing liquid to enter each cylinder (2) from the liquid inlet (2.1) or liquid to flow into the stirring box (3) from the liquid outlet (2.2) for stirring; an injection port (3.1) is provided on the stirring box (3); each of the driven wheels (7) is connected to the first driving wheel (11) through the adjusting unit (13), and the piston rods (4) slide relative to the cylinder (2) through the rotation of the rotating shaft (10), so that liquid enters each cylinder (2) from the liquid inlet (2.1) or flows into the stirring box (3) from the liquid outlet (2.2) for stirring; an injection port (3.1) is provided on the stirring box (3); The adjustment unit (13) comprises a connecting shaft (13.1), the connecting shaft (13.1) is fixedly connected to the driven wheel (7), the peripheral side surface of the connecting shaft (13.1) is fixedly connected to the bracket (13.2), the bracket (13.2) is slidably connected to the slider (13.3), the sliding direction of each slider (13.3) and the bracket (13.2) is perpendicular to the axial direction of the connecting shaft (13.1), the connecting shaft (13.1) is slidably connected to the mounting frame (13.4) along its axial direction, the mounting frame (13.4) is slidably connected to the slider (13.3), the sliding direction of the mounting frame (13.4) and the slider (13.3) is inclined to the axial direction of the connecting shaft (13.1), and the connecting shaft (13.1) is slidably connected to the mounting frame (13.4) along its axial direction. An adjusting rod (13.5) for adjusting the relative position of the mounting frame (13.4) and the connecting shaft (13.1) is installed between the sliders (13.3) and the mounting frame (13.4), the sliders (13.3) form an annular structure surrounding the axis of the connecting shaft (13.1), the annular structure is transmission-connected to the first driving wheel (11), the stirring unit (9) comprises a stirring shaft (9.1), the stirring shaft (9.1) is rotationally connected to the stirring box (3), the portion of the stirring shaft (9.1) located in the stirring box (3) is fixedly connected to the stirring blade (9.2), the portion of the stirring shaft (9.1) extending out of the stirring box (3) is fixedly connected to the rotating wheel (9.3), and the rotating wheel (9.3) is transmission-connected to the second driving wheel (12).

2. The concrete crack repair material preparation device according to claim 1, characterized in that: Each of the cylinders (2) is slidably connected to the shell (1), and a stopper (15) for fixing the cylinder (2) and the shell (1) is installed at the connection between each of the cylinders (2) and the shell (1).

3. The concrete crack repair material preparation device according to claim 1, characterized in that: A liquid inlet pipe (16) is installed at the liquid inlet (2.1), an injection needle (17) is installed at the injection port (3.1), and a rotating handle (18) is installed on the rotating shaft (10).

4. The concrete crack repair material preparation device according to claim 1, characterized in that: The sliders (13.3) are evenly distributed in a ring shape around the axis of the connecting shaft (13.1), and the distances between the sliders (13.3) and the axis of the connecting shaft (13.1) are the same.

5. The concrete crack repair material preparation device according to claim 1, characterized in that: The adjusting rod (13.5) is rotatably connected to the connecting shaft (13.1), and the adjusting rod (13.5) is threadedly connected to the mounting frame (13.4).

6. A method for preparing concrete crack repair materials according to any one of claims 1 to 5, characterized in that: The following steps are involved: (a) adjusting the speed ratio of each driven wheel (7) and the first driving wheel (11) through each adjustment unit (13), and adjusting the relative position of each cylinder (2) and the housing (1) so that the piston rod (4) contacts the liquid inlet (2.1); (b) rotating the rotating shaft (10) so that the liquid enters the cylinder (2) in proportion, with the injection port (3.1) facing upward, and rotating the rotating shaft (10) in the opposite direction so that the liquid enters the mixing box (3) from the cylinder (2) in proportion, while the mixing unit (9) mixes the liquid. When the air in the mixing box (3) is exhausted, the rotating shaft (10) is stopped.

7. The method for preparing a concrete crack repair material according to claim 6, characterized in that: In the process of adjusting the speed ratio between each driven wheel (7) and the first driving wheel (11), when the speed ratio between a portion of each driven wheel (7) and the first driving wheel (11) increases, the speed ratio between the remaining portion of each driven wheel (7) and the first driving wheel (11) decreases.

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