Grouting device for repairing wall crack of ancient building

Abstract

The invention discloses a grouting device for repairing wall cracks of ancient buildings. The grouting device comprises a shell, and the shell is arranged to be of a structure with the two ends penetrating through; an extrusion mechanism can be arranged on the inner side of the shell, the extrusion mechanism comprises a center shaft, a spiral blade and an end disc, the spiral blade is installed on the center shaft and arranged in the shell, the end disc is arranged at the end of the center shaft in a sleeving mode through a bearing and detachably arranged at one end of the shell, and meanwhile a rotary disc is arranged at the end, protruding out of the end disc, of the center shaft; an injection head is detachably arranged at the other end of the shell; according to the crack repairing device, the shell is arranged, the extrusion mechanism is arranged on the inner side of the shell, meanwhile, the storage barrel is arranged on the side edge of the shell in a communicating mode, a worker can operate the extrusion mechanism to work, a repairing material is forced to flow into the shell from the storage barrel and then flow into a crack from the shell, and crack repairing is achieved; and the extrusion mechanism is manually operated, so that the output flow, pressure and the like of the repair material can be controlled according to repair requirements.

Description

Technical Field

[0001] The invention relates to the field of crack repairing equipment, in particular to a grouting device for repairing cracks on the wall of an ancient building. Background Art

[0002] After experiencing development throughout the dynasties, my country has preserved many ancient buildings of historical significance. They carry the architectural styles, craftsmanship and social and cultural characteristics of different historical periods, and are the crystallization of the wisdom and creativity of the ancients.

[0003] Because ancient buildings are exposed to the natural environment for a long time, they will experience the alternation of four seasons and changes in temperature between day and night, as well as rainfall, snowfall, changes in environmental humidity, earthquakes, weathering erosion and other effects, which can easily lead to cracks in walls, component joints and other parts.

[0004] Cracks may weaken the structural strength and stability of the wall, reduce the wall's ability to bear loads, and increase the risk of wall collapse, especially when natural disasters such as earthquakes and strong winds occur, which poses a safety hazard. Timely repair can effectively avoid safety accidents. Cracks also provide a channel for rainwater and moisture to penetrate into the wall, causing the wall to become damp, moldy, and rotten, further accelerating the damage to the wall. Repairing cracks can prevent moisture from invading and protect the internal structure and materials of the wall.

[0005] In order to restore ancient buildings and reduce the impact of cracks on them, the cracks need to be repaired.

[0006] The repair of cracks on the walls of ancient buildings mainly relies on manual operations, such as manual grouting and filling with plaster. These methods are not only labor-intensive, but also inefficient. It is difficult to complete large-scale crack repair work in a short period of time, increasing the risk of ancient buildings being exposed to the external environment. During the grouting or filling process, problems such as loose mortar filling and loose adhesion to the crack wall may occur, causing the cracks to reappear easily after repair, affecting the quality and effect of the repair. For cracks in some narrow, deep or hidden areas, it is difficult to accurately inject the repair material into the cracks through manual repair, and it is easy to leak or over-fill, making it impossible to effectively repair the cracks. Summary of the invention

[0007] The purpose of the present invention is to provide a grouting device for repairing cracks on the wall of an ancient building, aiming to improve the problem of poor efficiency and effect of artificial crack repair. The device is suitable for filling cracks in adobe brick walls of ancient buildings, and can also be used for filling cracks in blue brick walls. It is mainly used for cracks with a width between 0.1 mm and 50 mm. The material used for filling is mainly a special filling material for ancient building repair. This material has good compatibility and can be closely combined with ancient building wall materials such as adobe bricks and blue bricks. It also has the characteristics of anti-aging and good air permeability.

[0008] The present invention is implemented as follows: a grouting device for repairing cracks on the wall of an ancient building comprises a shell, which is configured as a structure with two ends connected; an extrusion mechanism can be arranged on the inner side of the shell, the extrusion mechanism comprises a central axis, spiral leaves and an end plate, the spiral leaves are installed on the central axis and are arranged in the shell, the end plate is arranged on the end of the central axis through a bearing connection sleeve, and is detachably arranged at one end of the shell, and a turntable is arranged at the end of the central axis protruding from the end plate; an injection head is detachably arranged at the other end of the shell, and the injection head is configured as a conical structure; a feeding pipe is arranged at the end of the shell away from the injection head, a storage barrel is detachably arranged at the feeding pipe, and a sub-pipe can be arranged at the bottom of the storage barrel, and the sub-pipe can be connected to a grouting machine.

[0009] Preferably, the bottom of the storage barrel is arranged as a frustum structure, and a discharge pipe is arranged below, and the discharge pipe is threadedly inserted into the feed pipe; the auxiliary pipe is arranged at the frustum section of the storage barrel.

[0010] Preferably, a pressing mechanism is provided on the storage barrel, and the pressing mechanism includes a pressure plate, a guide rod and a top cover. The guide rod is vertically arranged above the pressure plate and passes through the top cover. A first magnet and a second magnet are respectively arranged on the side where the top cover and the pressure plate are close to each other, and the first magnet and the second magnet are arranged to repel each other.

[0011] Preferably, a second thread structure is provided on the top of the storage barrel, a thread groove is provided on the lower side of the top cover, and the top thread of the storage barrel is inserted into the thread groove; the pressure plate is provided on the inner side of the storage barrel and is in sliding contact with the side wall of the storage barrel.

[0012] Preferably, a connecting mechanism is provided on the end plate and the end of the injection head adjacent to the shell, the connecting mechanism includes a first ring plate and a second ring plate, the second ring plate is configured as a convex structure, and the first ring plate is sleeved on the end of the second ring plate with a smaller diameter, and a first ring groove and a second ring groove are respectively provided on the side walls where the first ring plate and the second ring plate contact, and a plurality of rollers are provided in the space formed by the first ring groove and the second ring groove.

[0013] Preferably, an inlet and outlet groove is provided at one end with a larger diameter of the second ring plate, and the inlet and outlet groove is communicated with the second ring groove. A notch is provided at the edge of the first ring groove adjacent to the inlet and outlet groove, and the roller can pass through the space formed by the inlet and outlet groove and the notch to enter the ring groove; a blocking column is detachably provided at the inlet and outlet groove.

[0014] Preferably, a first thread structure is provided on one end of the end plate and the injection head adjacent to the housing, a third thread structure is provided on the inner side surface of the second ring plate, and the second ring plate is threadably sleeved on the end plate and the injection head.

[0015] Preferably, a second annular end plate is provided at one end of the end plate and the injection head adjacent to the shell, and a second notch is provided on the second annular end plate; a first annular end plate is provided at both ends of the shell, and a first notch is provided on the first annular end plate; a plurality of hooks are fixedly provided on one side of the first annular plate away from the second annular plate, and the hooks pass through the second notch, and the first notch is snapped onto the first annular end plate.

[0016] Preferably, grooves are provided on the sides of the two first annular end plates that are close to each other, the grooves are arranged to deviate from the first notch, and the hooks are fitted in the grooves.

[0017] Preferably, a polygonal groove is provided at the end of the central shaft, and the polygonal groove is provided at the end of the central shaft having the turntable.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. The present invention is provided with a shell, and an extrusion mechanism is provided on the inner side of the shell, and a storage barrel is provided on the side of the shell. The extrusion mechanism can be operated by a staff to force the repair material to flow from the storage barrel into the shell, and then flow from the shell into the crack to repair the crack; because the extrusion mechanism is manually operated, the flow rate and pressure of the repair material output can be controlled according to the repair requirements.

[0020] 2. The present invention is provided with a connecting mechanism, which can realize the stable connection between the end plate, the injection head and the shell under the action of the connecting mechanism, and provide convenience for quickly disassembling and assembling the end plate and the injection head according to needs, and provide support for changing the use state of the device according to needs.

[0021] 3. The present invention provides a secondary pipe at the bottom of the storage barrel, and the secondary pipe can be connected to a grouting machine so that repair materials can be injected into the storage barrel in time through the grouting machine to provide support for long-term repair operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a first structural schematic diagram of the present invention as a whole;

[0023] Figure 2 It is a second structural schematic diagram of the present invention as a whole;

[0024] Figure 3 It is a structural schematic diagram of the housing of the present invention;

[0025] Figure 4 It is a structural schematic diagram of the extrusion mechanism of the present invention;

[0026] Figure 5 It is a structural schematic diagram of the central axis of the present invention;

[0027] Figure 6 It is a schematic diagram of the structure of the injection head and the connecting mechanism of the present invention;

[0028] Figure 7 It is a schematic structural diagram of the injection head of the present invention;

[0029] Figure 8 It is a structural schematic diagram of the connection mechanism of the present invention;

[0030] Fig. 9 It is a structural schematic diagram of the material storage barrel and the pressing mechanism of the present invention;

[0031] Fig.10 It is a first structural schematic diagram of the material storage barrel of the present invention;

[0032] Fig.11 It is a second structural schematic diagram of the material storage barrel of the present invention;

[0033] Fig.12 It is a structural schematic diagram of the pressing mechanism of the present invention;

[0034] Fig.13 It is a third structural schematic diagram of the present invention as a whole;

[0035] Fig.14 It is a structural schematic diagram of the present invention and a grouting machine.

[0036] In the figure: 1, housing; 11, handle; 12, feed pipe; 13, annular groove; 14, first annular end plate; 15, first notch; 16, groove; 2, injection head; 21, first thread structure; 22, annular convex plate; 23, second annular end plate; 24, second notch; 3, storage barrel; 31, second thread structure; 32, discharge pipe; 33, auxiliary pipe; 34, valve body; 4, extrusion mechanism; 41, central axis; 42, screw Rotating blade; 43, end plate; 44, rotating plate; 45, polygonal groove; 5, connecting mechanism; 51, first ring plate; 52, hook; 53, first ring groove; 54, roller; 55, second ring groove; 56, second ring plate; 57, inlet and outlet groove; 58, blocking column; 6, pressing mechanism; 61, pressure plate; 62, first magnet; 63, guide rod; 64, second magnet; 65, top cover; 66, threaded groove; 7, joint; 8, grouting machine. DETAILED DESCRIPTION

[0037] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like 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 an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between 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.

[0038] The following is a further description with reference to the accompanying drawings and specific embodiments:

[0039] Example 1

[0040] In order to change the manual method of grouting and filling plaster, improve the efficiency of repairing cracks on the wall of ancient buildings, and achieve the full filling of repair materials, this embodiment provides a device for repairing cracks on a wall (such as the wall of an ancient building). The device can be held by a construction worker, and when the end of the device is aimed at the crack, the repair material is controlled to be continuously output and injected into the crack.

[0041] like Figure 1 , Figure 2 As shown, specifically, the device includes a housing 1, an injection head 2, a storage barrel 3, an extrusion mechanism 4, etc. The housing 1 is set as a structure with two ends through, and the extrusion mechanism 4 is set on the inner side of the housing 1 and can rotate under the action of external force. The injection head 2 is set as a conical structure and is detachably set at one end of the housing 1. The storage barrel 3 is set at the end of the housing 1 away from the injection head 2, and the repair material is stored in the storage barrel 3. When the staff uses the device to repair the cracks on the wall, the conical end of the injection head 2 is facing the crack, or even inserted into the crack. Then, the staff controls the extrusion mechanism 4 to rotate, forcing the repair material to flow from the storage barrel 3 into the housing 1 and move along the housing 1 to the injection head 2. Because the repair material accumulates at the injection head 2 and continues to be fed, the repair material is forced to be output from the injection head 2 and injected into the crack under the action of pressure, thereby repairing the crack. In order to facilitate the staff to hold the device, a handle 11 is provided on the side of the housing 1.

[0042] like Figure 4 As shown, in order to be able to control the movement of the repair material through the extrusion mechanism 4, it includes a central shaft 41, a spiral blade 42 and an end plate 43. The spiral blade 42 is installed on the central shaft 41 and is arranged in the shell 1. The end plate 43 is sleeved on the end of the central shaft 41 through a bearing connection and is detachably arranged at one end of the shell 1. Therefore, under the action of the end plate 43, the central shaft 41 is stably arranged on the inner side of the shell 1, and cooperates with the spiral blade 42 to form a device for pushing the material to move.

[0043] In order to control the rotation of the spiral blade 42, a turntable 44 is provided at one end of the protruding end plate 43 of the central shaft 41. The staff can rotate the turntable 44 to force the central shaft 41 to rotate, thereby driving the spiral blade 42 to move, forcing the material to move along the length direction of the shell 1, effectively controlling the injection rate and pressure of the repair material, and providing support for better crack repair.

[0044] like Figure 5 As shown, in order to reduce the labor intensity of the staff, a polygonal groove 45 can be provided at one end of the central shaft 41 where a turntable 44 is provided, so that the end of the polygonal wrench can be inserted into the polygonal groove 45, and the other end of the polygonal wrench is connected to the electric wrench, so that the rotation of the central shaft 41 can be controlled when the electric wrench is working.

[0045] like Figure 3 , Fig.10 As shown, in order to install the storage barrel 3 on the shell 1, a feed pipe 12 is provided at the end of the shell 1 away from the injection head 2, and a discharge pipe 32 is provided below the storage barrel 3. The discharge pipe 32 is threadedly inserted in the feed pipe 12. Therefore, while the storage barrel 3 is stably installed, the material in the storage barrel 3 can easily enter the shell 1.

[0046] like Fig. 9 As shown, in order to avoid the influence of the inclination of the storage barrel 3 on the transportation of the repair material, a pressing mechanism 6 is provided on the storage barrel 3. The pressing mechanism 6 and the storage barrel 3 form a repair material storage space with a variable volume. Therefore, the volume size can be changed during the output of the repair material, thereby limiting the repair material to always be set in the space adjacent to the discharge pipe 32.

[0047] like Fig.12 As shown, specifically, the pressing mechanism 6 includes a pressure plate 61, a guide rod 63 and a top cover 65. The guide rod 63 is vertically arranged above the pressure plate 61 and passes through the top cover 65. A first magnet 62 and a second magnet 64 are respectively arranged on the side where the top cover 65 and the pressure plate 61 are close to each other. The first magnet 62 and the second magnet 64 are arranged to repel each other. Therefore, with the cooperation of the first magnet 62 and the second magnet 64, the pressure plate 61 always tends to move away from the top cover 65, so that the pressure plate 61 and the storage barrel 3 form a repair material storage cavity with a variable volume.

[0048] like Fig.10 , Fig.12 As shown, in order to stably install the pressing mechanism 6, a second thread structure 31 is provided on the top of the storage barrel 3, and a thread groove 66 is provided on the lower side of the top cover 65, and the top thread of the storage barrel 3 is inserted into the thread groove 66. The pressing plate 61 is provided on the inner side of the storage barrel 3 and is in sliding contact with the side wall of the storage barrel 3.

[0049] Example 2

[0050] like Figure 4 , Figure 6 As shown, on the basis of Example 1, in order to stably and detachably arrange the injection head 2 and the end plate 43 at the two ends of the shell 1, a connecting mechanism 5 is sleeved on the end of the end plate 43 and the injection head 2 adjacent to the shell 1. Under the action of the connecting mechanism 5, the injection head 2 and the end plate 43 are stably installed relative to the shell 1, and convenience is provided for removing the injection head 2 and the end plate 43.

[0051] like Figure 8 As shown, specifically, the connection mechanism 5 includes a first ring plate 51 and a second ring plate 56. The second ring plate 56 is set as a convex structure, and the second ring plate 56 is sleeved on the end plate 43 and the injection head 2. At the same time, the first ring plate 51 can be adjusted to be sleeved on the end with a smaller diameter of the second ring plate 56. A plurality of hooks 52 are fixedly arranged on the side of the first ring plate 51 away from the second ring plate 56, and a first annular end plate 14 is arranged at both ends of the housing 1. The hooks 52 are snap-fitted on the first annular end plate 14. Therefore, with the cooperation of the first ring plate 51, the second ring plate 56, and the hooks 52, a stable connection between the end plate 43 and the injection head 2 is achieved.

[0052] like Figure 8 As shown, in order to achieve the articulated connection between the first ring plate 51 and the second ring plate 56, a first ring groove 53 and a second ring groove 55 are respectively provided on the side walls where the first ring plate 51 and the second ring plate 56 contact each other, and a plurality of rollers 54 are provided in the space formed by the first ring groove 53 and the second ring groove 55. When the rollers 54 roll, a low-friction movable connection between the first ring plate 51 and the second ring plate 56 is achieved, and a stable connection between the first ring plate 51 and the second ring plate 56 is achieved.

[0053] like Figure 7 , Figure 8 As shown, in order to ensure that the second ring plate 56 is stably connected to the end plate 43 and the injection head 2, a first threaded structure 21 is provided at one end of the end plate 43 and the injection head 2 adjacent to the housing 1, and a third threaded structure is provided on the inner side of the second ring plate 56. The second ring plate 56 is threadedly sleeved on the end plate 43 and the injection head 2. Therefore, the position of the hook 52 relative to the first annular end plate 14 can be changed by rotating the second ring plate 56, thereby providing support for controlling the stable connection between the end plate 43, the injection head 2 and the housing 1.

[0054] like Figure 3 , Figure 7As shown, in order to allow the hook 52 to pass through the first annular end plate 14 and be snap-connected with the first annular end plate 14, a second annular end plate 23 is provided on the end plate 43 and the end of the injection head 2 adjacent to the housing 1, and a second notch 24 is provided on the second annular end plate 23. A first notch 15 is provided on both ends of the housing 1. The hook 52 passes through the second notch 24 and the first notch 15 is snap-connected to the first annular end plate 14.

[0055] like Figure 3 As shown, in addition, a groove 16 is provided on the side where the two first annular end plates 14 are close to each other, and the groove 16 is set away from the first notch 15, and the hook 52 is set in the groove 16. Therefore, the hook 52 passing through the notch needs to be rotated to the groove 16, and then the second ring plate 56 is rotated to make the hook 52 extend into the groove 16, thereby limiting the position of the hook 52 and the first annular end plate 14.

[0056] like Figure 3 , Figure 7 As shown, in order to make the end plate 43, the injection head 2 and the housing 1 in sealing contact, an annular groove 13 is provided on the first annular end plate 14, and an annular convex plate 22 is fixedly provided on the second annular end plate 23. The annular convex plate 22 extends into the annular groove 13 and presses against the sealing ring located in the annular groove 13.

[0057] like Figure 8 As shown, in order to realize the assembly and disassembly of the roller 54, an inlet and outlet groove 57 is provided at one end of the second ring plate 56 with a larger diameter, and the inlet and outlet groove 57 is arranged in communication with the second ring groove 55. A notch is provided at the edge of the first ring groove 53 near the inlet and outlet groove 57, and the roller 54 can pass through the space formed by the inlet and outlet groove 57 and the notch to enter the ring groove. In order to prevent the roller 54 from easily escaping from the ring groove, a blocking column 58 is provided at the inlet and outlet groove 57, which can be disassembled by bolt connection, snap connection, etc., to cut off the passage for the roller 54 to move.

[0058] Example 3

[0059] like Fig.11 , Fig.13 , Fig.14 As shown, on the basis of Example 1 or 2, in order to realize long-term continuous repair material injection operation, the bottom of the storage barrel 3 is set as a frustum structure, and a secondary pipe 33 is arranged at the frustum structure of the storage barrel 3, and a valve body 34 is arranged on the secondary pipe 33, and the valve body 34 can be connected to the grouting machine 8. Therefore, the repair material can be transported to the storage barrel 3 in time under the action of the grouting machine 8.

[0060] The grouting machine 8 has been disclosed, and a brief introduction is given here. It includes a power system, a pump body, a pipeline system, a control system, a storage container, etc. The power system can be set as an electric motor to provide power for the grouting machine, drive the grouting pump and other components to work, and convert electrical energy into mechanical energy. The pump body is the core component of the grouting machine, which is responsible for extracting the slurry from the storage container and delivering it to the designated location at high pressure. Common ones include piston pumps, plunger pumps, gear pumps, etc. The pipeline system includes a feed pipeline, a discharge pipeline, and a pipeline interface. The feed pipeline connects the storage container and the grouting pump to deliver the slurry into the pump body. The discharge pipeline is connected to the auxiliary pipe 33 from the grouting pump outlet. The control system includes an electric control box and a hydraulic reversing valve block. The electric control box contains various electrical components and control circuits for controlling the start and stop of the grouting machine, the grouting speed, the pressure and other parameters, and realizing automatic operation and precise control. The hydraulic reversing valve block controls the flow direction of the hydraulic oil, realizes the reciprocating motion of the actuators such as the oil cylinder, and thus controls the working state of the grouting pump.

[0061] When the grouting machine 8 is connected, the material can be promptly transported to the storage barrel 3 by the grouting machine 8. In addition, the extrusion mechanism 4 can be disassembled when the grouting machine 8 is connected to the auxiliary pipe 33, and the repair material can be injected into the crack by the grouting machine 8. When the repair material is injected by the grouting machine 8, the storage barrel 3 can also be replaced with the joint 7, and the grouting machine 8 can be directly connected by the joint 7.

[0062] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A grouting device for repairing cracks on the wall of an ancient building, characterized in that: The invention comprises a shell (1), wherein the shell (1) is configured as a structure with two ends being through-connected; an extrusion mechanism (4) may be arranged inside the shell (1), wherein the extrusion mechanism (4) comprises a central shaft (41), spiral blades (42) and an end plate (43); the spiral blades (42) are mounted on the central shaft (41) and are arranged inside the shell (1); the end plate (43) is sleeved at the end of the central shaft (41) through a bearing connection sleeve and is detachably arranged at one end of the shell (1); and the end plate (43) is arranged at the central shaft (41) and is sleeved at the end of the central shaft (41) through a bearing connection sleeve. A rotating disk (44) is arranged at one end of the shaft (41) protruding from the end disk (43); an injection head (2) is detachably arranged at the other end of the shell (1), and the injection head (2) is arranged in a conical structure; a feed pipe (12) is arranged at the end of the shell (1) away from the injection head (2), and a storage barrel (3) is detachably arranged at the feed pipe (12), and a sub-tube (33) is arranged at the bottom of the storage barrel (3), and the sub-tube (33) can be connected to a grouting machine (8).

2. A grouting device for repairing cracks on the wall of an ancient building according to claim 1, characterized in that: The bottom of the material storage barrel (3) is arranged in a frustum structure, and a discharge pipe (32) is arranged below the material storage barrel, and the discharge pipe (32) is threadedly inserted into the feed pipe (12); the auxiliary pipe (33) is arranged at the frustum section of the material storage barrel (3).

3. A grouting device for repairing cracks on the wall of an ancient building according to claim 2, characterized in that: A pressing mechanism (6) is provided on the material storage barrel (3), and the pressing mechanism (6) comprises a pressure plate (61), a guide rod (63) and a top cover (65). The guide rod (63) is vertically arranged above the pressure plate (61) and penetrates the top cover (65). A first magnet (62) and a second magnet (64) are respectively arranged on a side where the top cover (65) and the pressure plate (61) are close to each other. The first magnet (62) and the second magnet (64) are arranged to repel each other.

4. A grouting device for repairing cracks on the wall of an ancient building according to claim 3, characterized in that: A second thread structure (31) is provided at the top of the storage barrel (3), a thread groove (66) is provided on the lower side of the top cover (65), and the top thread of the storage barrel (3) is inserted into the thread groove (66); the pressure plate (61) is provided on the inner side of the storage barrel (3) and is in sliding contact with the side wall of the storage barrel (3).

5. A grouting device for repairing cracks on ancient building walls according to claim 1, characterized in that: A connecting mechanism (5) is sleeved on the end of the end plate (43) and the injection head (2) adjacent to the housing (1), the connecting mechanism (5) comprising a first ring plate (51) and a second ring plate (56), the second ring plate (56) being configured as a convex structure, and the first ring plate (51) being sleeved on the end of the second ring plate (56) with a smaller diameter, a first ring groove (53) and a second ring groove (55) being respectively provided on the side walls where the first ring plate (51) and the second ring plate (56) are in contact, and a plurality of rollers (54) are provided in the space formed by the first ring groove (53) and the second ring groove (55).

6. A grouting device for repairing cracks on the wall of an ancient building according to claim 5, characterized in that: An inlet and outlet groove (57) is arranged at one end of the second ring plate (56) with a larger diameter. The inlet and outlet groove (57) is communicated with the second ring groove (55). A notch is arranged at the edge of the first ring groove (53) adjacent to the inlet and outlet groove (57). The roller (54) can pass through the space formed by the inlet and outlet groove (57) and the notch to enter the ring groove. A blocking column (58) is detachably arranged at the inlet and outlet groove (57).

7. A grouting device for repairing cracks on the wall of an ancient building according to claim 5, characterized in that: A first thread structure (21) is provided on one end of the end plate (43) and the injection head (2) adjacent to the housing (1), a third thread structure is provided on the inner side surface of the second ring plate (56), and the second ring plate (56) is threadedly sleeved on the end plate (43) and the injection head (2).

8. A grouting device for repairing cracks on the wall of an ancient building according to claim 5, characterized in that: A second annular end plate (23) is provided at one end of the end plate (43) and the injection head (2) adjacent to the shell (1), and a second notch (24) is provided on the second annular end plate (23); a first annular end plate (14) is provided at both ends of the shell (1), and a first notch (15) is provided on the first annular end plate (14); and a plurality of hooks (52) are fixedly provided on a side of the first ring plate (51) away from the second ring plate (56), and the hooks (52) pass through the second notch (24) and the first notch (15) and are snapped onto the first annular end plate (14).

9. A grouting device for repairing cracks on the wall of an ancient building according to claim 8, characterized in that: A groove (16) is provided on one side of the two first annular end plates (14) close to each other. The groove (16) is arranged to deviate from the first notch (15), and the hook (52) is arranged to fit in the groove (16).

10. A grouting device for repairing cracks on the wall of an ancient building according to claim 1, characterized in that: A polygonal groove (45) is provided at the end of the central shaft (41), and the polygonal groove (45) is provided at one end of the central shaft (41) having a rotating disk (44).

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