Construction joint filling device and joint filling method

Abstract

The invention provides a construction joint filling device and method, and relates to the technical field of constructional engineering.The construction joint filling device comprises a spiral conveyor, a conveying pipe is fixedly installed on an outlet pipe of the spiral conveyor, a joint filling gun is fixedly installed at one end of the conveying pipe, and a feeding hopper is installed on the outer surface of one end of the spiral conveyor in a penetrating mode; after gap filling slurry is injected into the feeding hopper, the motor can be started to drive the rotating frame to rotate on the support, then the multiple scraping plates are driven to rotate in the inner wall of the feeding hopper, the gap filling slurry attached to the inner wall of the feeding hopper is scraped away and cleaned away, and meanwhile the outer surface of the feeding hopper is knocked and vibrated in cooperation with the knocking mechanism; and the scraped joint filling slurry is vibrated to fall down, so that the joint filling slurry is prevented from being accumulated in the feeding hopper and occupying the internal space, the internal space of the feeding hopper can be ensured not to be blocked, the slurry can be smoothly conveyed to a construction area, the construction efficiency and the grouting quality are improved, and material waste is avoided.

Description

Technical Field

[0001] This invention relates to the field of building engineering technology, and in particular to a construction joint filling device and a joint filling method. Background Technology

[0002] Construction caulking devices are equipment or tools used in the construction of buildings, roads, bridges, etc., to automatically or manually apply caulking material evenly to joints, cracks, or holes. Their main purpose is to fill joints or cracks to improve the sealing, impermeability, waterproofing, and aesthetics of the structure, while preventing structural damage caused by environmental factors.

[0003] With the rapid development of construction engineering, joint filling has become an important part of construction. Grouting, as a commonly used joint filling technique, is widely used for filling structural joints and repairing cracks. However, in the process of using traditional grouting equipment, the joint filling grout tends to accumulate and adhere on the inner wall of the feed hopper. Over time, this will occupy the internal space of the feed hopper, causing blockage or grout waste, which will affect construction efficiency and quality. Summary of the Invention

[0004] The technical problem to be solved by this invention is: With the rapid development of construction engineering, joint filling construction has become an important part of construction. Grouting, as a commonly used joint filling process, is widely used for filling structural joints and repairing cracks. However, in the process of using traditional grouting equipment, the joint filling grout tends to accumulate and adhere on the inner wall of the feed hopper. Over time, this will occupy the internal space of the feed hopper, causing blockage or grout waste, which will affect construction efficiency and quality.

[0005] The technical solution adopted by this invention to solve its technical problem is: a construction joint filling device, characterized in that it includes a screw conveyor, a conveying pipe, a joint filling gun, a feeding hopper, and a cleaning device; the outlet pipe of the screw conveyor extends along its material conveying direction, one end of the conveying pipe is fixedly connected to the outlet pipe of the screw conveyor, and the conveying pipe is connected to the discharge channel of the screw conveyor; the joint filling gun is fixedly installed at the end of the conveying pipe away from the screw conveyor, and the inlet of the joint filling gun is connected to the cavity of the conveying pipe, for exporting the joint filling slurry in the conveying pipe to the construction joint; the feeding hopper is vertically installed through the outer surface of the screw conveyor near its feeding end, and the lower port of the feeding hopper is connected to the feeding channel of the screw conveyor, for injecting joint filling slurry into the screw conveyor; the cleaning device is disposed on one side of the screw conveyor, and the actuating component of the cleaning device is located on the inner wall of the feeding hopper; the cleaning device includes a bracket, a motor, a rotating frame, and several scrapers, and also includes a hammer for tapping and vibrating the outer surface of the feeding hopper. The system includes a striking mechanism; a bracket fixed to the side of the screw conveyor; a motor fixedly mounted on the bracket; one end of the rotating frame passing through the bracket and fixedly connected to the output end of the motor via a coupling; the motor driving the rotating frame to rotate around its own axis on the bracket; several scrapers fixed at intervals along the circumference of the rotating frame on its outer circumferential surface; the side of the scraper away from the rotating frame abutting against the inner wall of the feed hopper; when the rotating frame rotates, it can drive the scrapers to slide along the inner wall of the feed hopper to scrape off the grout adhering to the inner wall of the feed hopper; the striking mechanism is installed on the outer surface of the feed hopper and can be driven during the rotation of the rotating frame to periodically strike and vibrate the outer surface of the feed hopper, causing the grout scraped off by the scrapers to fall into the feed channel of the screw conveyor; the cleaning device can, after the grout is put into the feed hopper, start the motor to drive the rotating frame to rotate on the bracket, thereby driving several scrapers to scrape and clean the inner wall of the feed hopper, and then cooperate with the striking mechanism to vibrate and clean it down, avoiding accumulation and occupying the internal space of the feed hopper, achieving the effect of anti-clogging.

[0006] Preferably, the support of the cleaning device is plate-shaped, with one side of the support fixedly connected to the side of the screw conveyor near the feed hopper; the side of the motor housing is fixedly connected to the side of the support away from the screw conveyor, and the output end of the motor faces the feed hopper horizontally; the rotating frame is rod-shaped or frame-shaped, with one end of the rotating frame penetrating the plate of the support horizontally, and this end is coaxially fixed to the output shaft of the motor via a coupling; one side of several scrapers is fixedly connected to the outer peripheral surface of the rotating frame, the scraper surface forms a preset angle with the axis of the rotating frame, and the edge of the scraper away from the rotating frame is in close contact with the inner wall of the feed hopper; the fixed part of the striking mechanism is fixedly connected to the outer wall of the feed hopper, and the movable part of the striking mechanism can rotate relative to the fixed part to realize the striking action on the outer surface of the feed hopper.

[0007] The aforementioned components achieve the following effects: During the construction process, when filling gaps in a building, the grout is poured into the feed hopper. The drive motor on the screw conveyor then moves the internal threaded conveyor rod to transport the grout from the feed hopper to the delivery pipe. The grout is then discharged by the grout gun and applied to the gaps in the building. After the grout is injected into the feed hopper, the motor can be activated to rotate the rotating frame on the support, causing several scrapers to rotate within the inner wall of the feed hopper. This scrapes off and cleans the grout adhering to the inner wall. Simultaneously, a striking mechanism vibrates the outer surface of the feed hopper, causing the scraped grout to fall off. This prevents the grout from accumulating in the feed hopper and occupying internal space, ensuring that the internal space of the feed hopper is not blocked. The grout can be smoothly delivered to the construction area, improving construction efficiency and grouting quality, and avoiding material waste.

[0008] Preferably, the striking mechanism includes an abutment frame, which is rod-shaped. One end of the abutment frame is fixedly connected to the outer peripheral surface of the end of the rotating frame away from the motor. The abutment frame extends outward along the radial direction of the rotating frame. When the rotating frame rotates, it can drive the abutment frame to make a circular motion around the axis of the rotating frame. The motion trajectory of the abutment frame can cover the moving parts of the striking mechanism.

[0009] The effect achieved by the above components is as follows: by setting up a striking mechanism, when the rotating frame rotates, it can drive the abutment frame to rotate as well. When it rotates to a certain angle, one end will abut against one side of the striking rod, pushing it outward, so that it rotates in the inner wall of the U-shaped block with the two ends of the torsion spring as the center, causing the torsion spring to deform. The other end strikes the outer surface of the feed hopper, causing it to vibrate and shake off the slurry scraped off by the scraper, avoiding slurry accumulation and assisting the scraper to clean more thoroughly. When the abutment frame is completely removed from the striking rod, the torsion spring will drive the striking end of the striking rod to reset and move away, thus facilitating the next striking process.

[0010] Preferably, the striking mechanism further includes two U-shaped blocks, which are arranged circumferentially around the feed hopper. The openings of the U-shaped blocks face away from the feed hopper, and the closed end sides of the U-shaped blocks are fixedly connected to the outer surface of the feed hopper.

[0011] The effect achieved by the above-mentioned components is that by setting up protective blocks, the impact wear between one end of the striking rod and the feed hopper can be reduced, thereby increasing the service life of both.

[0012] Preferably, the striking mechanism further includes a striking rod and two torsion springs; the striking rod is long and rod-shaped, with both ends rotatably mounted between the opposing inner walls of two U-shaped blocks via pins, and the striking rod can rotate around the pins within the U-shaped blocks; one end of the striking rod can abut against the outer circumferential surface of the abutment frame, and the other end of the striking rod faces the outer surface of the feed hopper, forming a striking end; the two torsion springs are respectively sleeved on the pins at both ends of the striking rod, with one end of the torsion spring fixedly connected to the inner wall of the U-shaped block and the other end fixedly connected to the end of the striking rod; when the abutment frame rotates with the rotating frame to abut against one end of the striking rod, it can push the striking rod to rotate around the pin and cause the torsion spring to undergo elastic deformation; when the abutment frame disengages from the striking rod, the elastic restoring force of the torsion spring can drive the striking rod to reset, causing the striking end to strike the outer surface of the feed hopper.

[0013] The effect achieved by the above components is that by setting up the circular roller, the contact wear between the abutment frame and the striking rod can be reduced, making it easier to push it outward.

[0014] Preferably, a protective block is fixedly installed on the outer surface of the striking end of the striking rod. The protective block is made of rubber and its surface is positioned opposite to the outer surface of the feed hopper to buffer the impact force between the striking rod and the feed hopper.

[0015] The effect achieved by the above components is that by setting up reinforcing rods, the connection area between the scraper and the rotating frame can be increased, making the connection more secure, less prone to breakage and damage, and improving service life and stability.

[0016] Preferably, a plurality of circular rollers are rotatably mounted at intervals along the length of the outer surface of the abutment frame near the striking rod, and the axis of the circular rollers is parallel to the axis of the rotating frame; when the abutment frame abuts against the striking rod, the circular rollers can roll in contact with the side of the striking rod to reduce sliding wear between the abutment frame and the striking rod. Each scraper is fixedly connected to a reinforcing rod on the side away from the rotating frame, one end of the reinforcing rod is fixedly connected to the surface of the scraper, and the other end is fixedly connected to the outer peripheral surface of the rotating frame; the reinforcing rod, scraper, and rotating frame together form a triangular support structure to enhance the connection strength between the scraper and the rotating frame; a protective cover is fixedly installed on the side of the support away from the screw conveyor, the protective cover is a box-shaped structure with one open end, the open end of the protective cover faces the support and is sealed to the side of the support; the motor is placed entirely in the inner cavity of the protective cover, and the protective cover is used to protect the motor from impact and dust.

[0017] The effect achieved by the above-mentioned components is that by setting up a protective cover, the outer surface of the motor can be covered and protected, so that the motor is not easily damaged by external impacts during use or storage.

[0018] Preferably, a construction joint filling method using the aforementioned construction joint filling device includes the following steps: S1, placing the screw conveyor on a flat surface in the construction area, ensuring that its feed end faces upward and its discharge end faces the position to be filled; fixing one end of the conveying pipe to the outlet pipe of the screw conveyor to ensure that the conveying pipe is connected to the discharge channel of the screw conveyor; then fixing the filling gun to the end of the conveying pipe away from the screw conveyor, so that the feed port of the filling gun is precisely connected to the cavity of the conveying pipe; installing the feed hopper vertically through the outer surface of the screw conveyor near the feed end, ensuring that the lower port of the feed hopper is connected to the feed channel of the screw conveyor; checking each component of the cleaning device, confirming that the bracket is fixed to the side of the screw conveyor, the motor is placed inside the protective cover and is securely connected to the bracket, the rotating frame is fixed to the output end of the motor through a coupling, the scraper is tightly abutted against the inner wall of the feed hopper on the side away from the rotating frame, the U-shaped block of the striking mechanism is fixed to the outer wall of the feed hopper, the striking rod is rotatably connected to the U-shaped block through a pin and the torsion spring is in a natural state; S2. Slowly inject the prepared grout into the feed hopper, avoiding splashing during the injection process. At the same time, start the motor of the cleaning device. The motor output shaft drives the rotating frame to rotate around its own axis on the support through the coupling. The rotating frame synchronously drives several scrapers that are spaced apart along its circumference to rotate. The scrapers slide along the inner wall of the feed hopper from the edge away from the rotating frame, scraping the inner wall of the feed hopper in advance to reduce the adhesion of the grout during injection. S3. After sufficient grout is injected into the feed hopper, start the screw conveyor. The screw conveyor's internal threaded conveying rod rotates, conveying the grout in the feed hopper along the feed channel to the outlet pipe, and then through the connected conveying pipe to the grout gun. The construction worker holds the grout gun, aligns the outlet of the grout gun with the building joint to be filled, and controls the grout gun to move slowly along the length of the joint, so that the grout is evenly filled into the joint until the joint is filled with grout and the surface is smooth. S4. During the process of conveying slurry by the screw conveyor, the motor of the cleaning device continuously drives the rotating frame to rotate. The scraper always slides along the inner wall of the feed hopper, scraping off the slurry adhering to the inner wall of the feed hopper. At the same time, the rotating frame drives the abutment frame fixedly connected to it to make a circular motion around the axis of the rotating frame. When the abutment frame rotates to contact one end of the striking rod, the abutment frame rolls with the striking rod through the outer circumferential roller, pushing the striking rod to rotate around the pin shaft inside the U-shaped block. At this time, the torsion spring sleeved on the pin shaft undergoes elastic deformation. When the abutment frame continues to rotate and disengages from the striking rod, the torsion spring drives the striking rod to reset under the action of elastic restoring force, so that the striking end of the striking rod strikes the outer surface of the feed hopper, shaking the slurry scraped off by the scraper into the feed channel of the screw conveyor, avoiding the accumulation and blockage of slurry in the feed hopper. S5. During the grouting process, adjust the conveying speed of the screw conveyor according to the width and depth of the gap to ensure that the amount of grout delivered matches the gap filling requirements. Construction personnel should observe the discharge of the grouting gun in real time. If uneven grout discharge is found, adjust the moving speed of the grouting gun or the distance from the gap in time. At the same time, observe the remaining amount of grout in the feed hopper. When the amount of grout is insufficient, stop grouting and add grout to the feed hopper. Keep the cleaning device working continuously during the replenishment process. S6. After all the building gaps have been filled, first turn off the screw conveyor to stop the grout delivery, then turn off the motor of the cleaning device, remove the grout gun from the delivery pipe, rinse the inlet, outlet and internal channels of the grout gun with clean water or special cleaning agent to remove residual grout, disassemble the delivery pipe, clean the residual grout in the pipe cavity, and finally clean the inner wall of the feed hopper to ensure that there is no grout residue. After that, disassemble and store all parts properly in a dry and ventilated place for the next use.

[0019] The beneficial effects of this invention are: During construction, when filling gaps in a building, grout is poured into a hopper. A drive motor on a screw conveyor then moves an internal threaded conveyor rod to transport the grout from the hopper to a delivery pipe. The grout is then discharged by a grout gun and applied to the gaps in the building. After the grout is injected into the hopper, a motor is activated to rotate a frame on a support, causing several scrapers to rotate within the hopper's inner wall. This scrapes away and cleans the grout adhering to the inner wall. Simultaneously, a tapping mechanism vibrates the outer surface of the hopper, causing the scraped grout to fall off. This prevents grout from accumulating in the hopper and occupying internal space, ensuring the grout is not blocked and can be smoothly delivered to the construction area. This improves construction efficiency and grouting quality, and avoids material waste. Attached Figure Description

[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0021] Figure 1 This is a structural schematic diagram of a construction joint filling device and joint filling method proposed in this invention.

[0022] Figure 2 This invention provides a three-dimensional structural diagram of the screw conveyor in a construction joint filling device and method. Figure 3 This invention proposes a construction joint filling device and a joint filling method. Figure 2 Partial structural diagram; Figure 4 To propose a construction joint filling device and joint filling method Figure 3An enlarged 3D structural diagram at point A; Figure 5 To propose a construction joint filling device and joint filling method Figure 2 An enlarged 3D structural diagram at point B; Figure 6 This invention provides a three-dimensional structural diagram of the support structure in a construction joint filling device and method.

[0023] Legend: 1. Screw conveyor; 2. Cleaning device; 3. Conveying pipe; 4. Sealant gun; 5. Feed hopper; 21. Support frame; 22. Motor; 23. Rotating frame; 24. Scraper; 25. Reinforcing rod; 26. Protective cover; 27. Striking mechanism; 271. Abutment frame; 272. U-shaped block; 273. Striking rod; 274. Torsion spring; 275. Protective block; 276. Circular roller. Detailed Implementation

[0024] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the invention, and therefore only show the components relevant to the invention.

[0025] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0026] Figure 1-6 The illustrated construction joint filling device and method include a screw conveyor 1, with a conveying pipe 3 fixedly installed at the outlet pipe of the screw conveyor 1. A joint filling gun 4 is fixedly installed at one end of the conveying pipe 3. A feed hopper 5 is installed through the outer surface of one end of the screw conveyor 1. A cleaning device 2 is installed on the inner wall of the feed hopper 5 on one side of the screw conveyor 1. After the joint filling slurry is put into the feed hopper 5, the cleaning device 2 starts the motor 22 to drive the rotating frame 23 to rotate on the support 21, thereby driving several scrapers 24 to scrape and clean the inner wall of the feed hopper 5. Then, in conjunction with the knocking mechanism 27, the slurry is vibrated and cleaned away, preventing accumulation and occupying the internal space of the feed hopper 5, thus achieving the effect of preventing blockage. It should be noted that the screw conveyor 1 and the joint filling gun 4 are mature technologies and equipment in the prior art, and their internal structure, connection method and principle will not be described further.

[0027] Figure 1-5The cleaning device 2 shown includes a bracket 21, one side of which is fixedly mounted on one side of the screw conveyor 1; a motor 22, one side of which is fixedly mounted on one side of the bracket 21; a rotating frame 23, one end of which is mounted through one side of the bracket 21 and the other end is fixedly mounted on the output end of the motor 22 by means of a coupling; a plurality of scrapers 24, one side of which is fixedly mounted on one side of the rotating frame 23 and the other side abuts against the inner wall of the feed hopper 5; and a striking mechanism 27, which is disposed on the outer surface of the feed hopper 5 and is used to perform striking and vibration treatment on the outer surface of the feed hopper 5. During the construction process, when filling gaps in a building, the grout is poured into the feed hopper 5. Then, the drive motor 22 on the screw conveyor 1 is started to drive the internal threaded conveying rod to transport the grout from the feed hopper 5 to the conveying pipe 3. The grout is then discharged by the grout gun 4 and filled into the gaps in the building for grouting. After the grout is injected into the feed hopper 5, the motor 22 can be started to drive the rotating frame 23 to rotate on the support 21. This drives several scrapers 24 to rotate in the inner wall of the feed hopper 5, scraping off and cleaning the grout adhering to the inner wall of the feed hopper 5. At the same time, the striking mechanism 27 is used to strike and vibrate the outer surface of the feed hopper 5, causing the scraped grout to fall off. This prevents the grout from accumulating in the feed hopper 5 and occupying internal space, ensuring that the internal space of the feed hopper 5 is not blocked. The grout can be smoothly transported to the construction area, improving construction efficiency and grouting quality, and avoiding material waste.

[0028] Figure 1-5 The striking mechanism 27 shown includes an abutment frame 271, one end of which is fixedly mounted on the outer surface of one end of the rotating frame 23; two U-shaped blocks 272, one side of which is fixedly mounted on the outer surface of the feed hopper 5; a striking rod 273, the two ends of which are rotatably mounted on the inner walls of the U-shaped blocks 272 respectively, and one end abuts against one side of the abutment frame 271; and two torsion springs 274, the two ends of which are fixedly mounted on one side of the inner wall of the U-shaped blocks 272 and one side of the inner wall of one end of the striking rod 273 respectively. By setting the striking mechanism 27, when the rotating frame 23 rotates, it can drive the abutment frame 271 to rotate as well. When it rotates to a certain angle, one end will abut against one side of the striking rod 273, pushing it outward, so that it rotates in the inner wall of the U-shaped block 272 with the two ends of the torsion spring 274 as the center, causing the torsion spring 274 to deform. The other end strikes the outer surface of the feed hopper 5, causing it to vibrate and shake off the slurry scraped off by the scraper 24, avoiding slurry accumulation and helping the scraper 24 to clean more thoroughly. When the abutment frame 271 is completely removed from the striking rod 273, the torsion spring 274 will drive the striking end of the striking rod 273 to reset and move away, so as to facilitate the next striking process.

[0029] Figure 1-5 A protective block 275, made of rubber, is fixedly installed on the outer surface of one end of the striking rod 273. By installing the protective block 275, the impact wear between the striking rod 273 and the feed hopper 5 can be reduced, thus improving their service life. Several circular rollers 276 are rotatably mounted on the outer surface of one end of the abutment frame 271, with the rollers 276 positioned on the side of the abutment frame 271 closest to the striking rod 273. The circular rollers 276 reduce the contact wear between the abutment frame 271 and the striking rod 273, facilitating its outward pushing.

[0030] Figure 1-5 A reinforcing rod 25 is fixedly installed on one side of the scraper 24, and the reinforcing rod 25 is fixedly installed on one side of the rotating frame 23. By setting the reinforcing rod 25, the connection area between the scraper 24 and the rotating frame 23 can be increased, making the connection more secure, less prone to breakage and damage, and improving service life and stability. A protective cover 26 is fixedly installed on one side of the bracket 21, and the motor 22 is set in the inner wall of the protective cover 26. By setting the protective cover 26, the outer surface of the motor 22 can be covered and protected, so that the motor 22 is not easily damaged by external impacts during use or storage.

[0031] Working Principle: During the construction process, when filling gaps in a building, the grout is poured into the feed hopper 5. Then, the drive motor 22 on the screw conveyor 1 is activated, driving the internal threaded conveyor rod to transport the grout from the feed hopper 5 to the conveying pipe 3. The grout is then discharged by the grout gun 4 and applied to the gaps in the building for grouting. After the grout is injected into the feed hopper 5, the motor 22 can be activated to drive the rotating frame 23 to rotate on the support 21. This causes several scrapers 24 to rotate within the inner wall of the feed hopper 5, scraping away and cleaning the grout adhering to the inner wall. Simultaneously, the rotation of the rotating frame 23 also drives the scrapers... As the connecting frame 271 rotates, when it reaches a certain angle, one end abuts against one side of the striking rod 273, pushing it outward. This causes the rod to rotate within the inner wall of the U-shaped block 272, centered on the two ends of the torsion spring 274. This causes the torsion spring 274 to deform, while the other end strikes the outer surface of the feed hopper 5, causing it to vibrate and dislodge the grout scraped off by the scraper 24. This prevents the grout from accumulating and helps the scraper 24 clean more thoroughly, thus preventing the grout from accumulating in the feed hopper 5 and occupying internal space. This ensures that the internal space of the feed hopper 5 is not blocked, allowing the grout to be smoothly delivered to the construction area, improving construction efficiency and grouting quality, and avoiding material waste.

[0032] Based on the above-described preferred embodiments of the present invention, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the inventive concept. The technical scope of this invention is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A construction joint filling device, comprising a screw conveyor (1), characterized in that: The outlet pipe of the screw conveyor (1) is fixedly installed with a conveying pipe (3), and a caulking gun (4) is fixedly installed at one end of the conveying pipe (3). A feed hopper (5) is installed through the outer surface of one end of the screw conveyor (1). A cleaning device (2) is provided on the inner wall of the feed hopper (5) on one side of the screw conveyor (1). The cleaning device (2) can put the caulking slurry into the feed hopper (5), start the motor (22) to drive the rotating frame (23) to rotate on the support (21), thereby driving several scrapers (24) to scrape and clean the inner wall of the feed hopper (5). Then, in conjunction with the knocking mechanism (27), it is vibrated and dropped to avoid accumulation and occupying the internal space of the feed hopper (5), thus achieving the effect of anti-blocking.

2. The construction joint filling device according to claim 1, characterized in that: The cleaning device (2) includes a bracket (21), wherein one side of the bracket (21) is fixedly mounted on one side of the screw conveyor (1); Motor (22), wherein one side of motor (22) is fixedly mounted on one side of bracket (21); Rotating frame (23), one end of which is installed through the bracket (21) on one side, and the other end is fixedly installed on the output end of the motor (22) by means of a coupling; Several scrapers (24), one side of which is fixedly installed on one side of the rotating frame (23), and the other side abuts against the inner wall of the feed hopper (5); A striking mechanism (27) is provided on the outer surface of the feed hopper (5) for striking and vibrating the outer surface of the feed hopper (5).

3. A construction joint filling device according to claim 2, characterized in that: The striking mechanism (27) includes an abutment frame (271), one end of which is fixedly mounted on the outer surface of one end of the rotating frame (23).

4. A construction joint filling device according to claim 3, characterized in that: Two U-shaped blocks (272), one side of which is fixedly mounted on the outer surface of the feed hopper (5).

5. A construction joint caulking device according to claim 4, characterized in that: The striking rod (273) has two ends that are rotatably mounted on the inner walls of the U-shaped block (272), and one end of the striking rod (273) abuts against one side of the abutment frame (271). Two torsion springs (274) are fixedly mounted on one side of the inner wall of the U-shaped block (272) and one side of the inner wall of the striking rod (273), respectively.

6. A construction joint caulking device according to claim 5, characterized in that: A protective block (275) is fixedly installed on the outer surface of one end of the striking rod (273), and the protective block (275) is made of rubber.

7. A construction joint caulking device according to claim 6, characterized in that: A plurality of rollers (276) are rotatably mounted on the outer surface of one end of the abutment frame (271), wherein the rollers (276) are arranged on the side of the abutment frame (271) near the striking rod (273).

8. A construction joint caulking device according to claim 7, characterized in that: A reinforcing rod (25) is fixedly installed on one side of the scraper (24), and one side of the reinforcing rod (25) is fixedly installed on one side of the rotating frame (23).

9. A construction joint caulking device according to claim 8, characterized in that: A protective cover (26) is fixedly installed on one side of the bracket (21), and the motor (22) is located in the inner wall of the protective cover (26).

10. A method for caulking construction joints, characterized in that: The construction joint filling device according to any one of claims 1-9 includes the following steps: S1, placing the screw conveyor (1) on a flat ground in the construction area, ensuring that its feed end faces upward and its discharge end faces the position to be filled, fixing one end of the conveying pipe (3) to the outlet pipe of the screw conveyor (1) to ensure that the conveying pipe (3) is connected to the discharge channel of the screw conveyor (1), and then fixing the joint filling gun (4) at the end of the conveying pipe (3) away from the screw conveyor (1), so that the feed port of the joint filling gun (4) is precisely connected to the cavity of the conveying pipe (3), and installing the feed hopper (5) vertically through the screw conveyor (1) near the feed port. Check the outer surface of the material end to ensure that the lower port of the feed hopper (5) is connected to the feed channel of the screw conveyor (1). Check each component of the cleaning device (2) to confirm that the bracket (21) is fixed to the side of the screw conveyor (1), the motor (22) is placed inside the protective cover (26) and is firmly connected to the bracket (21), the rotating frame (23) is fixed to the output end of the motor (22) through the coupling, the scraper (24) is in close contact with the inner wall of the feed hopper (5) on the side away from the rotating frame (23), the U-shaped block of the striking mechanism (27) is fixed to the outer wall of the feed hopper (5), the striking rod 273 is rotatably connected to the U-shaped block through the pin and the torsion spring (274) is in the natural state; S2. Slowly inject the prepared grout into the feed hopper (5). Avoid splashing the grout during the injection process. At the same time, start the motor (22) of the cleaning device (2). The output shaft of the motor (22) drives the rotating frame (23) to rotate around its own axis on the support (21) through the coupling. The rotating frame (23) drives several scrapers (24) arranged at intervals along its circumference to rotate. The scrapers (24) slide along the inner wall of the feed hopper (5) away from the rotating frame (23) to scrape the inner wall of the feed hopper (5) in advance and reduce the adhesion of the grout during injection. S3. After sufficient grout is injected into the feed hopper (5), start the screw conveyor (1). The screw conveyor rod inside the screw conveyor (1) rotates and transports the grout in the feed hopper (5) to the outlet pipe along the feed channel. Then, it is transported to the grout gun (4) through the conveying pipe (3) connected to it. The construction personnel hold the grout gun (4) and align the outlet of the grout gun (4) with the building joint to be filled. Control the grout gun (4) to move slowly along the length of the joint so that the grout is evenly filled into the joint until the joint is filled with grout and the surface is flat. S4. During the process of conveying slurry by the screw conveyor (1), the motor (22) of the cleaning device (2) continuously drives the rotating frame (23) to rotate. The scraper (24) always slides along the inner wall of the feed hopper (5) to scrape off the slurry adhering to the inner wall of the feed hopper (5). At the same time, the rotating frame (23) drives the abutment frame (271) fixedly connected to it to make a circular motion around the axis of the rotating frame (23). When the abutment frame (271) rotates to contact one side of the striking rod (273), the abutment frame (271) makes contact with the striking rod (273) through the outer circumferential roller (276). The rod (273) rolls into contact, pushing the striking rod (273) to rotate around the pin in the U-shaped block. At this time, the torsion spring (274) sleeved on the pin undergoes elastic deformation. When the abutment frame (271) continues to rotate and disengages from the striking rod (273), the torsion spring (274) drives the striking rod (273) to reset under the action of elastic restoring force, so that the striking end of the striking rod (273) strikes the outer surface of the feed hopper (5), shaking the slurry scraped off by the scraper (24) into the feed channel of the screw conveyor (1), thus preventing the slurry from accumulating and clogging in the feed hopper (5). S5. During the grouting process, adjust the conveying speed of the screw conveyor (1) according to the width and depth of the gap to ensure that the grouting slurry delivery volume matches the gap filling requirements. Construction personnel should observe the discharge of the grouting gun (4) in real time. If the grout discharge is uneven, adjust the moving speed of the grouting gun (4) or the distance from the gap in time. At the same time, observe the remaining amount of grout in the feed hopper (5). When the amount of grout is insufficient, stop grouting and add grout to the feed hopper (5). Keep the cleaning device (2) working continuously during the replenishment process. S6. After all the building gaps are filled, first turn off the screw conveyor (1) to stop the slurry delivery, then turn off the motor (22) of the cleaning device (2), remove the caulking gun (4) from the delivery pipe (3), rinse the inlet, outlet and internal channel of the caulking gun (4) with clean water or special cleaning agent to remove residual slurry, disassemble the delivery pipe (3), clean the residual slurry in the pipe cavity, and finally clean the inner wall of the feed hopper (5) to ensure that there is no slurry residue. Then disassemble and store each part properly in a dry and ventilated place for the next use.

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