A construction engineering structure joint grouting device

By automatically adjusting the gap baffle through a lifting and steering structure, combined with the gap baffle sealing and two-way pipe recovery system, the problems of manual operation and grout spillage in existing devices have been solved, realizing automated grouting and grout recovery, and improving gap filling efficiency and grout uniformity.

CN122383151APending Publication Date: 2026-07-14CHONGQING QIANYIN HONGFENG CONSTRUCTION CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
CHONGQING QIANYIN HONGFENG CONSTRUCTION CO LTD
Filing Date
2026-05-25
Publication Date
2026-07-14

AI Technical Summary

Technical Problem

Existing building joint grouting devices require manual operation, which is tiring, and the grout is prone to spillage, making it difficult to effectively fill the gaps between the wall top and the ground.

Method used

A grouting device for structural gaps in building engineering has been designed, comprising a lifting structure, a steering structure, and a buffer structure. It can automatically adjust the height and direction of the gap baffle and threaded joint. Combined with the gap baffle sealing and two-way pipe recovery system, it can achieve automatic grouting and recover excess grout. It is equipped with a stirring structure and an anti-clogging structure to ensure uniform mixing of grout and cleaning of the filter screen.

Benefits of technology

It reduces the labor intensity of workers, prevents grout spillage, improves the filling effect of gaps, reduces cement grout waste, and ensures uniform mixing of grout, thereby enhancing the practicality of the equipment and the grouting effect.

✦ Generated by Eureka AI based on patent content.

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Abstract

The application discloses a kind of construction engineering structural gap grouting equipment, it is related to construction engineering equipment technical field.The construction engineering structural gap grouting equipment, including hollow base, the top outer wall of hollow base is fixedly installed with mixing box, the top of mixing box is provided with inlet, the top outer wall of hollow base is fixedly installed with pumping pump, the front side of pumping pump is provided with discharge hose, and the both ends of discharge hose are fixedly installed with threaded joint.The construction engineering structural gap grouting equipment, by hollow base, lifting structure, steering structure, buffer structure, can support gap baffle, threaded joint, without staff holding grouting equipment to gap grouting, reduce the labor intensity of staff, and lifting structure and steering structure, the use height and direction of gap baffle, threaded joint can also be adjusted, so that the grouting equipment can be grouted to side wall, wall top, ground and filled gap, increase the practicality of the grouting equipment.
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Description

Technical Field

[0001] This invention relates to the field of building engineering equipment technology, and in particular to a grouting device for structural gaps in building engineering. Background Technology

[0002] Cracks are a common problem in industrial, civil, and bridge structures. These cracks are not caused by a single factor, but by a combination of factors. While some cracks are indeed directly related to insufficient reinforcing steel, improper use, or overloading, in many cases, cracks are not directly caused by external loads. In some cases, cracks even appear before the building is put into use. These cracks not only damage the integrity and durability of the building, but also adversely affect its impermeability and seismic performance, thus bringing unpleasant sensory and psychological feelings to users. Therefore, it is necessary to use grouting equipment to repair the cracks in the building.

[0003] For example, Chinese document CN117513808A discloses a grouting device for structural gaps in building engineering, comprising an electrically controlled handheld unit, the handheld unit including a motor gun body, a grout delivery pipe fixedly mounted on the motor gun body, an output nozzle threadedly mounted at the end of the grout delivery pipe, a grouting optimization mechanism fixedly mounted at the port of the output nozzle, the grouting optimization mechanism including a functional mounting mechanism, the functional mounting mechanism including a mounting functional rod, and spray hole grooves arrayed on the upper side of the mounting functional rod; the grouting device for structural gaps in building engineering of the present invention, through the setting of the grouting optimization mechanism, can realize the squeezing operation of the output grout during the grouting gap filling process, thereby achieving a better gap filling effect and improving efficiency. During the gap filling process, the grouting optimization mechanism has an output air pump, a pushing airbag assembly, and an air transmission functional structure connected to it.

[0004] However, the above-mentioned grouting device requires manual operation to grout the gaps in the side walls, which can lead to fatigue for workers during long periods of operation. Furthermore, when facing the gaps between the top of the wall and the ground, the grout inlet cylinder of the grouting device is in a horizontal position, which can cause the cement grout inside the inlet cylinder to spill out, affecting the effectiveness of the device. Summary of the Invention

[0005] The purpose of this invention is to provide a grouting device for structural gaps in building engineering to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a grouting device for structural gaps in building engineering, comprising a hollow base, a mixing tank fixedly installed on the top outer wall of the hollow base, a feed inlet provided on the top of the mixing tank, a pump fixedly installed on the top outer wall of the hollow base, a discharge hose provided on the front side of the pump, threaded connectors fixedly installed at both ends of the discharge hose, one threaded connector being threaded onto the output end of the pump, and a gap baffle being threaded onto the other threaded connector, the input end of the pump penetrating one side of the mixing tank and communicating with the interior of the mixing tank, a sealing sleeve being fitted on the outer wall of the gap baffle to seal the gap surface, preventing cement grout from flowing out of the gap during grouting, and a filter screen being fixedly installed on the inner wall of the mixing tank. The hollow base has casters with brakes movably installed on its bottom outer wall. A discharge pipe with a valve is fixedly installed on one side of the hollow base. The system also includes a lifting structure on the hollow base, a steering structure on the lifting structure, and a mechanism for adjusting the height of the sealing sleeve and the direction of the gap baffle. The combined use of the lifting and steering structures allows the equipment to be used for grouting the top, side walls, and ground. A buffer structure is located between the gap baffle and the steering structure to cushion the gap baffle. A mixing structure and an anti-clogging structure are also installed on the mixing tank. The mixing structure agitates the cement slurry inside the mixing tank, and the combined use of the mixing structure and the anti-clogging structure cleans impurities from one side of the filter screen.

[0007] Preferably, the lifting structure includes a fixed column, a second servo motor, a threaded rod, and a housing. The fixed column is fixedly installed on the top outer wall of the hollow base, the second servo motor is fixedly installed on the top of the fixed column, the fixed column has a sliding groove, the threaded rod is rotatably installed on the top of the sliding groove and the top of the hollow base, the output shaft of the second servo motor is fixedly installed on the top end of the threaded rod, the housing is slidably installed in the sliding groove, and the housing is threadedly installed on the threaded rod, allowing adjustment of the height of the gap baffle and the threaded joint.

[0008] Preferably, the steering structure includes a fixed shaft, a worm gear, a worm, and knobs. The fixed shaft is fixedly installed on the inner walls of the front and rear sides of the housing. The worm gear is rotatably installed on the outer wall of the fixed shaft. The worm is rotatably installed on the top and bottom of the housing. Two knobs are fixedly installed on both ends of the worm. The worm gear meshes with the worm and can adjust the direction of use of the gap baffle and threaded joint, enabling the grouting equipment to perform grouting and filling of gaps in side walls, wall tops, and the ground, thus increasing the practicality of the grouting equipment.

[0009] Preferably, the buffer structure includes a sleeve, a movable rod, and spring A. One end of the movable rod is slidably installed on the inner side of the sleeve, and the other end of the movable rod is fixedly installed with the gap baffle. There are two springs A, both of which are disposed on the inner side of the sleeve. Springs A are in contact with the movable rod. A movable groove is provided on one side of the housing. The sleeve passes through the movable groove and is fixedly installed on the outer wall of the worm gear.

[0010] Preferably, the stirring structure includes a first servo motor and a stirring frame. The first servo motor is fixedly installed on the top outer wall of the mixing tank, and the stirring frame is rotatably installed on the top and bottom of the mixing tank. The output shaft of the first servo motor is fixedly installed on the top of the stirring frame, which can stir the cement slurry inside the mixing tank, keep the cement slurry components uniformly mixed, and avoid segregation.

[0011] Preferably, the anti-clogging structure includes a rotating shaft, a cleaning plate, bevel gear A, and bevel gear B. The rotating shaft is rotatably mounted on the filter screen, the cleaning plate is fixedly mounted on the rotating shaft, bevel gear A is fixedly mounted on one end of the rotating shaft, and bevel gear B is fixedly mounted on the outer wall of the mixing frame. Bevel gear B meshes with bevel gear A, which can clean one side of the filter screen, prevent impurities from accumulating on one side of the filter screen, and ensure the grouting effect of the equipment.

[0012] Preferably, a sealing cover is fixedly installed on the inner bottom of the mixing tank, and the sealing cover is fitted onto the outer wall of the mixing frame and the outer wall of the rotating shaft.

[0013] Preferably, an annular baffle is fixedly installed on the inner wall of the mixing tank, and a nozzle is fixedly installed on the annular baffle. A threaded hole is opened on one side of the mixing tank, and the threaded hole is adapted to a threaded joint.

[0014] Preferably, the gap baffle is fixedly installed with a two-way pipe, a spring B is fixedly installed on the inner wall of the two-way pipe, a sealing plug is slidably installed on the inner wall of the two-way pipe, the sealing plug is fixedly installed with one end of the spring B, and a recovery hose is fixedly installed at one end of the two-way pipe. One end of the recovery hose passes through the top of the mixing tank and communicates with the inside of the mixing tank, which can discharge the air in the gap, improve the gap filling effect, and recover excess cement slurry, reducing the waste of cement slurry.

[0015] Preferably, a battery is fixedly installed on the inner wall of the hollow base, and a charging port is provided on the front side of the battery. The charging port passes through the front side of the hollow base and extends to the outer side of the hollow base.

[0016] Compared with the prior art, the beneficial effects of the present invention are: This structural joint grouting equipment for building engineering uses a hollow base, lifting structure, steering structure, and buffer structure to support the joint baffle and threaded joint, eliminating the need for workers to manually grout the joints and reducing their labor intensity. Furthermore, the lifting and steering structures can adjust the height and direction of the joint baffle and threaded joint, enabling the equipment to grout and fill joints on side walls, wall tops, and floors, thus increasing its practicality. This structural joint grouting equipment for building engineering can seal the surface of the joint through a joint baffle, preventing cement grout from flowing out of the joint during grouting. In addition, through the cooperation of a two-way pipe, a recovery hose, spring B, and a sealing plug, air in the joint can be discharged, improving the joint filling effect and recovering excess cement grout, reducing cement grout waste. This structural joint grouting equipment for building engineering uses a mixing structure and an anti-clogging structure to mix the cement slurry inside the mixing tank, keeping the cement slurry components uniformly mixed and preventing segregation. It can also clean one side of the filter screen to prevent impurities from accumulating on the side of the filter screen, thus ensuring the grouting effect of the equipment. Attached Figure Description

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments: Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 for Figure 1 A schematic diagram of the structure on the other side; Figure 3 This is a cross-sectional view of the hollow base and fixing column of the present invention; Figure 4 This is a cross-sectional view of the mixing tank of the present invention; Figure 5 This is a cross-sectional view of the sealing cover of the present invention; Figure 6 This is a cross-sectional view of the housing and sleeve of the present invention; Figure 7 This is a cleaning diagram of the present invention.

[0018] Reference numerals: 1. Hollow base; 2. Mixing tank; 3. Feed inlet; 4. First servo motor; 5. Mixing frame; 6. Filter screen; 7. Sealing cover; 8. Rotating shaft; 9. Cleaning plate; 10. Bevel gear A; 11. Bevel gear B; 12. Pump; 13. Discharge hose; 14. Threaded connector; 15. Gap baffle; 16. Sealing sleeve; 17. Fixed column; 18. Second servo motor; 19. Threaded rod; 20. Machine box; 21. Sleeve; 22. Movable rod; 23. Spring A; 24. Fixed shaft; 25. Worm gear; 26. Worm; 27. Knob; 28. Two-way pipe; 29. ​​Recycling hose; 30. Annular baffle; 31. Nozzle; 32. Charging port; 33. Battery; 34. Discharge pipe; 35. Spring B; 36. Sealing plug; 37. Caster with brake. Detailed Implementation

[0019] This section will describe in detail specific embodiments of the present invention. Preferred embodiments of the present invention are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and overall technical solution of the present invention, but they should not be construed as limiting the scope of protection of the present invention.

[0020] Please see Figure 1-7This invention provides a technical solution: a grouting device for structural gaps in building engineering, comprising a hollow base 1, a mixing tank 2 fixedly installed on the top outer wall of the hollow base 1, a feed inlet 3 provided on the top of the mixing tank 2, a material pump 12 fixedly installed on the top outer wall of the hollow base 1, a discharge hose 13 provided on the front side of the material pump 12, threaded connectors 14 fixedly installed at both ends of the discharge hose 13, one threaded connector 14 threadedly installed at the output end of the material pump 12, and a gap baffle 15 threadedly installed at the other threaded connector 14, the input end of the material pump 12 penetrating through one side of the mixing tank 2 and communicating with the interior of the mixing tank 2, a sealing sleeve 16 fitted on the outer wall of the gap baffle 15, which can seal the surface of the gap and prevent cement grout from flowing out of the gap during grouting, and a sealing sleeve 16 fixedly installed on the inner wall of the mixing tank 2. The filter screen 6 and the hollow base 1 are movably mounted on the bottom outer wall with casters 37 equipped with brakes. A discharge pipe 34 is fixedly installed on one side of the hollow base 1. The discharge pipe 34 is equipped with a valve. The device also includes a lifting structure on the hollow base 1 and a steering structure on the lifting structure. The lifting structure is used to adjust the height of the sealing sleeve 16, and the steering structure is used to adjust the direction of the gap baffle 15. The combined use of the lifting structure and the steering structure enables the device to be used for grouting the top of the wall, side walls, and the ground. A buffer structure is set between the gap baffle 15 and the steering structure to buffer the gap baffle 15. A stirring structure and an anti-clogging structure are set on the mixing tank 2. The stirring structure is used to stir the cement slurry inside the mixing tank 2. The combined use of the stirring structure and the anti-clogging structure is used to clean impurities on one side of the filter screen 6.

[0021] Furthermore, the lifting structure includes a fixed column 17, a second servo motor 18, a threaded rod 19, and a housing 20. The fixed column 17 is fixedly installed on the top outer wall of the hollow base 1. The second servo motor 18 is fixedly installed on the top of the fixed column 17. The fixed column 17 has a sliding groove. The threaded rod 19 is rotatably installed on the top of the sliding groove and the top of the hollow base 1. The output shaft of the second servo motor 18 is fixedly installed on the top of the threaded rod 19. The housing 20 is slidably installed in the sliding groove and threaded onto the threaded rod 19. When the second servo motor 18 is started, the output shaft of the second servo motor 18 drives the threaded rod 19 to rotate. The rotation of the threaded rod 19 drives the housing 20, sleeve 21, movable rod 22, gap baffle 15, and sealing sleeve 16 to rise or fall. The working height of the gap baffle 15 and threaded joint 14 can be adjusted.

[0022] Furthermore, the steering structure includes a fixed shaft 24, a worm gear 25, a worm 26, and a knob 27. The fixed shaft 24 is fixedly installed on the inner walls of the front and rear sides of the housing 20. The worm gear 25 is rotatably installed on the outer wall of the fixed shaft 24. The worm 26 is rotatably installed on the top and bottom of the housing 20. There are two knobs 27, which are fixedly installed at both ends of the worm 26. The worm gear 25 meshes with the worm 26. When the knob 27 is manually turned, it drives the worm 26 to rotate. The rotation of the worm 26 drives the worm gear 25, sleeve 21, movable rod 22, gap baffle 15, and sealing sleeve 16 to rotate. This allows adjustment of the direction of use of the gap baffle 15 and threaded joint 14, enabling the grouting equipment to perform grouting and filling of side walls, wall tops, and ground surfaces, thus increasing the practicality of the grouting equipment.

[0023] Furthermore, the buffer structure includes a sleeve 21, a movable rod 22, and a spring A23. One end of the movable rod 22 is slidably installed on the inner side of the sleeve 21, and the other end of the movable rod 22 is fixedly installed with the gap baffle 15. There are two springs A23, both of which are located on the inner side of the sleeve 21. The springs A23 are in contact with the movable rod 22. A movable groove is provided on one side of the housing 20. The sleeve 21 passes through the movable groove and is fixedly installed on the outer wall of the worm gear 25.

[0024] Furthermore, the mixing structure includes a first servo motor 4 and a mixing frame 5. The first servo motor 4 is fixedly installed on the top outer wall of the mixing tank 2, and the mixing frame 5 is rotatably installed on the top and bottom of the mixing tank 2. The output shaft of the first servo motor 4 is fixedly installed on the top of the mixing frame 5. When the first servo motor 4 is started, the output shaft of the first servo motor 4 drives the mixing frame 5 and the bevel gear B11 to rotate. The rotation of the mixing frame 5 can mix the cement slurry raw materials to make cement slurry and keep the cement slurry components uniformly mixed to avoid segregation.

[0025] Furthermore, the anti-clogging structure includes a rotating shaft 8, a cleaning plate 9, a bevel gear A10, and a bevel gear B11. The rotating shaft 8 is rotatably mounted on the filter screen 6, the cleaning plate 9 is fixedly mounted on the rotating shaft 8, the bevel gear A10 is fixedly mounted on one end of the rotating shaft 8, and the bevel gear B11 is fixedly mounted on the outer wall of the mixing frame 5. The bevel gear B11 meshes with the bevel gear A10. When the first servo motor 4 is started, the output shaft of the first servo motor 4 drives the mixing frame 5 and the bevel gear B11 to rotate. The rotation of the bevel gear B11 drives the bevel gear A10, the rotating shaft 8, and the cleaning plate 9 to rotate. The rotation of the cleaning plate 9 can clean one side of the filter screen 6, preventing larger substances in the cement slurry from accumulating on one side of the filter screen 6 and ensuring the grouting effect of the equipment.

[0026] Furthermore, a sealing cover 7 is fixedly installed on the inner bottom of the mixing tank 2, and the sealing cover 7 is fitted onto the outer wall of the mixing frame 5 and the outer wall of the rotating shaft 8.

[0027] Furthermore, an annular baffle 30 is fixedly installed on the inner wall of the mixing tank 2, and a nozzle 31 is fixedly installed on the annular baffle 30. A threaded hole is opened on one side of the mixing tank 2, and the threaded hole is compatible with the threaded connector 14.

[0028] Furthermore, a two-way pipe 28 is fixedly installed on the gap baffle 15. A spring B35 is fixedly installed on the inner wall of the two-way pipe 28. A sealing plug 36 is slidably installed on the inner wall of the two-way pipe 28. The sealing plug 36 is fixedly installed at one end of the spring B35. A recovery hose 29 is fixedly installed at one end of the two-way pipe 28. One end of the recovery hose 29 passes through the top of the mixing tank 2 and communicates with the interior of the mixing tank 2. It can discharge air in the gap, improve the gap filling effect, and recover excess cement slurry, reducing cement slurry waste.

[0029] Furthermore, a battery 33 is fixedly installed on the inner wall of the hollow base 1, and a charging port 32 is provided on the front side of the battery 33. The charging port 32 passes through the front side of the hollow base 1 and extends to the outer side of the hollow base 1.

[0030] Working principle: Cement slurry raw materials are fed into the mixing tank 2 through the feed inlet 3. The control system starts the first servo motor 4. The output shaft of the first servo motor 4 drives the mixing frame 5 and the bevel gear B11 to rotate. The rotation of the mixing frame 5 can stir the cement slurry raw materials to make cement slurry. The rotation of the bevel gear B11 drives the bevel gear A10, the rotating shaft 8, and the cleaning plate 9 to rotate. The rotation of the cleaning plate 9 can clean one side of the filter screen 6 to prevent larger substances in the cement slurry from accumulating on one side of the filter screen 6. After the cement slurry is made, the device is moved to the construction area and the rotation is achieved by manually turning the knob 27. Button 27 drives the worm gear 26 to rotate. The rotation of the worm gear 26 drives the worm wheel 25, sleeve 21, movable rod 22, gap baffle 15, and sealing sleeve 16 to rotate. The operating direction of the gap baffle 15 and sealing sleeve 16 can be adjusted according to the gap direction. The second servo motor 18 is started. The output shaft of the second servo motor 18 drives the threaded rod 19 to rotate. The rotation of the threaded rod 19 drives the housing 20, sleeve 21, movable rod 22, gap baffle 15, and sealing sleeve 16 to rise or fall. The operating position of the gap baffle 15 and sealing sleeve 16 can be adjusted according to the gap position. Then, the device is pushed to drive the gap. Baffle 15 and sealing sleeve 16 are placed over the gap surface. Pump 12 is started, drawing cement slurry from inside mixing tank 2. The cement slurry is injected into the gap through discharge hose 13 and threaded connector 14, grouting the gap. As the cement slurry is injected, the pressure in the gap gradually increases. This pressure pushes the sealing plug 36 and spring B35 in the two-way pipe 28, causing the two-way pipe 28 to connect with the recovery hose 29. Air in the gap and the removed cement slurry enter the interior of mixing tank 2 through the two-way pipe 28 and recovery hose 29, effectively filling the gap with cement slurry. Afterwards, open the valve on the discharge pipe 34, and the cement slurry inside the mixing tank 2 will be discharged through the discharge pipe 34. Then, pour clean water into the mixing tank 2 through the feed inlet 3. Thread the threaded connector 14 at one end of the discharge hose 13 onto the threaded hole on one side of the mixing tank 2. Start the pump 12, which will draw clean water from inside the mixing tank 2. The clean water will pass through the pump 12, discharge hose 13, threaded connector 14, and nozzle 31 in sequence and be sprayed into the interior of the mixing tank 2 to flush the cement slurry in the equipment. The three flushes through the mixing tank 2 and the feed inlet can effectively prevent the residual cement slurry from hardening and clogging.

[0031] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.

Claims

1. A grouting device for structural gaps in building engineering, comprising a hollow base (1), a mixing tank (2) fixedly installed on the top outer wall of the hollow base (1), a feed inlet (3) provided on the top of the mixing tank (2), a pump (12) fixedly installed on the top outer wall of the hollow base (1), a discharge hose (13) provided on the front side of the pump (12), and threaded connectors (14) fixedly installed at both ends of the discharge hose (13), one of the threaded connectors (14) being threadedly installed at the output end of the pump (12). Another threaded connector (14) is threaded with a slit baffle (15). The input end of the pump (12) passes through one side of the mixing tank (2) and communicates with the interior of the mixing tank (2). A sealing sleeve (16) is fitted on the outer wall of the slit baffle (15). A filter screen (6) is fixedly installed on the inner wall of the mixing tank (2). A caster with a brake (37) is movably installed on the bottom outer wall of the hollow base (1). A discharge pipe (34) is fixedly installed on one side of the hollow base (1). The discharge pipe (34) is equipped with a valve. The feature is that... Also includes: The lifting structure is set on the hollow base (1), and the steering structure is set on the lifting structure. The lifting structure is used to adjust the height of the sealing sleeve (16), and the steering structure is used to adjust the direction of the gap baffle (15). The combined use of the lifting structure and the steering structure enables the equipment to be used for grouting the top of the wall, the side wall, and the ground. A buffer structure is provided between the gap baffle (15) and the steering structure, and the buffer structure is used to buffer the gap baffle (15); The mixing structure and anti-clogging structure are installed on the mixing tank (2). The mixing structure is used to mix the cement slurry inside the mixing tank (2). The mixing structure and the anti-clogging structure are used together to clean the impurities on one side of the filter screen (6).

2. The grouting equipment for structural gaps in building engineering according to claim 1, characterized in that: The lifting structure includes a fixed column (17), a second servo motor (18), a threaded rod (19), and a housing (20). The fixed column (17) is fixedly installed on the top outer wall of the hollow base (1). The second servo motor (18) is fixedly installed on the top of the fixed column (17). The fixed column (17) has a sliding groove. The threaded rod (19) is rotatably installed on the top of the sliding groove and the top of the hollow base (1). The output shaft of the second servo motor (18) is fixedly installed on the top of the threaded rod (19). The housing (20) is slidably installed in the sliding groove and threadedly installed on the threaded rod (19).

3. The grouting equipment for structural gaps in building engineering according to claim 2, characterized in that: The steering structure includes a fixed shaft (24), a worm gear (25), a worm (26), and a knob (27). The fixed shaft (24) is fixedly installed on the inner walls of the front and rear sides of the housing (20). The worm gear (25) is rotatably installed on the outer wall of the fixed shaft (24). The worm (26) is rotatably installed on the top and bottom of the housing (20). There are two knobs (27) that are fixedly installed on both ends of the worm (26). The worm gear (25) meshes with the worm (26).

4. The grouting equipment for structural gaps in building engineering according to claim 3, characterized in that: The buffer structure includes a sleeve (21), a movable rod (22), and a spring A (23). One end of the movable rod (22) is slidably installed on the inner side of the sleeve (21), and the other end of the movable rod (22) is fixedly installed on the gap baffle (15). There are two springs A (23), both of which are located on the inner side of the sleeve (21). The springs A (23) are in contact with the movable rod (22). A movable groove is provided on one side of the housing (20). The sleeve (21) passes through the movable groove and is fixedly installed on the outer wall of the worm gear (25).

5. A grouting device for structural gaps in building engineering according to claim 4, characterized in that: The stirring structure includes a first servo motor (4) and a stirring frame (5). The first servo motor (4) is fixedly installed on the top outer wall of the stirring tank (2). The stirring frame (5) is rotatably installed on the top and bottom of the stirring tank (2). The output shaft of the first servo motor (4) is fixedly installed on the top of the stirring frame (5).

6. The grouting equipment for structural gaps in building engineering according to claim 5, characterized in that: The anti-clogging structure includes a rotating shaft (8), a cleaning plate (9), a bevel gear A (10), and a bevel gear B (11). The rotating shaft (8) is rotatably mounted on the filter screen (6), the cleaning plate (9) is fixedly mounted on the rotating shaft (8), the bevel gear A (10) is fixedly mounted on one end of the rotating shaft (8), and the bevel gear B (11) is fixedly mounted on the outer wall of the stirring rack (5). The bevel gear B (11) meshes with the bevel gear A (10).

7. A grouting device for structural gaps in building engineering according to claim 6, characterized in that: A sealing cover (7) is fixedly installed on the inner bottom of the mixing tank (2). The sealing cover (7) is fitted onto the outer wall of the mixing frame (5) and the outer wall of the rotating shaft (8).

8. A grouting device for structural gaps in building engineering according to claim 7, characterized in that: The inner wall of the mixing tank (2) is fixedly equipped with an annular baffle (30), and the annular baffle (30) is fixedly equipped with a nozzle (31). A threaded hole is opened on one side of the mixing tank (2), and the threaded hole is compatible with the threaded connector (14).

9. A grouting device for structural gaps in building engineering according to claim 8, characterized in that: The gap baffle (15) is fixedly installed with a two-way pipe (28), and a spring B (35) is fixedly installed on the inner wall of the two-way pipe (28). A sealing plug (36) is slidably installed on the inner wall of the two-way pipe (28). The sealing plug (36) is fixedly installed at one end of the spring B (35). A recovery hose (29) is fixedly installed at one end of the two-way pipe (28). One end of the recovery hose (29) passes through the top of the mixing tank (2) and communicates with the interior of the mixing tank (2).

10. A grouting device for structural gaps in building engineering according to claim 9, characterized in that: A battery (33) is fixedly installed on the inner wall of the hollow base (1). A charging port (32) is provided on the front side of the battery (33). The charging port (32) passes through the front side of the hollow base (1) and extends to the outside of the hollow base (1).