A grouting device for road and bridge construction

Abstract

The application discloses a grouting device for road and bridge construction and relates to the technical field of mixed material stirring and grouting.The grouting device comprises a grouting barrel, a support frame is fixedly connected to the outer wall of the grouting barrel, a vehicle frame is fixedly connected to the bottom of the support frame, an anti-solidification mechanism is arranged on the inner wall of the grouting barrel, reciprocating screw grooves are formed in the inner wall of the grouting barrel in correspondence with the anti-solidification mechanism, and a motor is fixedly installed at the top of the grouting barrel.In the grouting process, the motor drives the scraping ring to reciprocally scrape the inner wall of the grouting barrel, so that the wall-hanging solidification of part of the mud in the barrel is avoided, the mud is coagulated into blocks, the scraping operation on the inclined surface of the conical hopper is simultaneously performed, the scraped mud can be stirred and dispersed by the scraper, the mixing quality of the device is ensured, the grouting quality in the grouting process is ensured, and the cleaning difficulty in the subsequent cleaning is reduced.

Description

Technical Field

[0001] This invention relates to the field of grouting technology, specifically a grouting device for road and bridge construction. Background Technology

[0002] Roads and bridges generally refer to structures built over rivers, lakes, and seas to enable vehicles and pedestrians to pass smoothly. They are generally composed of several major parts, including roadbed, pavement, bridges, tunnels, and traffic engineering facilities. Grouting devices are often used during the construction of roads and bridges.

[0003] Before grouting, several grouting holes need to be pre-drilled on the road surface. Then, grouting is carried out on multiple holes using a grouting device. Grouting is a common method used in highway bridge construction to reinforce and treat foundation problems. It involves injecting specific grout materials into the stratum to change the physical properties and engineering performance of the stratum, thereby achieving the purposes of reinforcement, densification, waterproofing, seepage prevention, and drainage.

[0004] During the long-term grouting process, the mixture of cement and concrete inside the cylinder inevitably solidifies. Therefore, in existing technologies, mixing equipment is generally used to stir the mixture inside the cylinder during the grouting process to prevent solidification and ensure the mixing quality. However, the mixing effect is relatively simple, and some slurry is prone to solidifying on the cylinder wall, causing it to clump together. This can easily lead to blockages during mixing and transportation, affecting the mixing quality. Furthermore, it is not convenient for subsequent cleaning, resulting in excessive solidified slurry and other residues inside, increasing the burden of use. Summary of the Invention

[0005] The purpose of this invention is to provide a grouting device for road and bridge construction 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 road and bridge construction, comprising a grouting cylinder, a support frame fixedly connected to the outer wall of the grouting cylinder, and a vehicle frame fixedly connected to the bottom of the support frame, an anti-solidification mechanism provided on the inner wall of the grouting cylinder, and a reciprocating threaded groove provided on the inner wall of the grouting cylinder corresponding to the anti-solidification mechanism, and a motor fixedly installed on the top of the grouting cylinder.

[0007] The anti-solidification mechanism includes a driving component and a scraping component. The driving component is driven by the motor so that the motor drives the scraping component to perform a cyclic scraping operation on the inner wall of the grouting cylinder.

[0008] The bottom of the grouting cylinder is fixedly connected to a cone bucket, and the bottom of the cone bucket is fixedly connected to a conveying pipe. An auxiliary component is provided on the inner wall of the conveying pipe. The auxiliary component is driven by the scraping component to control the flow of slurry by raising and lowering the auxiliary component.

[0009] Preferably, the driving component includes a driving rod, and the top of the driving rod extends through to the outside of the grouting cylinder, and one end of the motor's output shaft is fixedly connected to the extended end of the driving rod.

[0010] Preferably, a connecting ring is fitted to the outer wall of the drive rod, and connecting strips are symmetrically fixed to the outer wall of the drive rod. A connecting groove is opened inside the connecting ring corresponding to the connecting strip, and the outer wall of the connecting strip slides in contact with the inner wall of the connecting groove. The top of the connecting strip is flush with the top inner wall of the grouting cylinder, and the bottom of the connecting strip is flush with the bottom of the grouting cylinder.

[0011] The scraping component includes connecting rods. The two connecting rods are fixedly connected to the outer wall of the connecting ring at their close ends and to the scraping ring at their far ends. The outer wall of the scraping ring is in contact with the inner wall of the grouting cylinder, and the outer wall of the scraping ring is threadedly connected to the inner wall of the reciprocating threaded groove.

[0012] Preferably, scraper blades are fixedly connected to the bottom of the scraper ring at equal intervals, and the bottom inclined surface of the scraper blades slides in contact with the inclined surface of the cone.

[0013] The auxiliary component includes a fixing ring, and one end of several scrapers that are close to each other is fixedly connected to the outer wall of the fixing ring.

[0014] Preferably, the bottom of the fixing ring is fixedly connected with sliding rods at equal intervals, and the outer wall of the sliding rod is provided with a sleeve rod, and the bottom of the sleeve rod is fixedly connected with a sealing block.

[0015] Preferably, the outer wall of the slide rod is symmetrically provided with limiting grooves, and the inner wall of the sleeve rod is fixedly connected to the limiting grooves with limiting blocks, and the outer wall of the limiting block slides in contact with the inner wall of the limiting groove.

[0016] Preferably, a spring is fixedly connected to the bottom of the slide rod, and the other end of the spring is fixedly connected to the bottom inner wall of the sleeve rod. A sealing groove is opened through the center of the sealing block, and the inner wall of the sealing groove slides in contact with the outer wall of the drive rod.

[0017] Preferably, the outer wall of the slide rod slides in contact with the inner wall of the sleeve rod, and the outer wall of the sealing block slides in contact with the inner wall of the conveying pipe.

[0018] Preferably, a connecting pipe is fitted to the bottom outer wall of the conveying pipe, and a clamp is provided on the outer wall of the connecting pipe. A mud pump is provided at the other end of the connecting pipe, and the other end of the connecting pipe is connected to the inlet of the mud pump. A corrugated pipe is fixedly connected to the outlet of the mud pump, and a slurry nozzle is fixedly connected to the other end of the corrugated pipe.

[0019] Preferably, a fixing bracket is fixedly installed on the top of the vehicle frame corresponding to the grouting nozzle, and a feeding port is fixedly installed on the top of the grouting cylinder.

[0020] Compared with the prior art, the beneficial effects of the present invention are:

[0021] 1. During the grouting process, the motor drives the scraper ring to reciprocate scraping the inner wall of the grouting cylinder, preventing some slurry from sticking to the wall and solidifying into lumps. It can also scrape the inclined surface of the cone bucket. At the same time, it can work with the scraper to stir and disperse the scraped slurry, ensuring the mixing quality of the device and thus ensuring the grouting quality during the grouting process, while reducing the difficulty of subsequent cleaning.

[0022] 2. During the grouting process, the scraper can drive the sealing block to rise and fall within the conveying pipe to scrape it away, thus avoiding blockage. At the same time, the cooperation between the sealing groove and the drive rod achieves the effect of intermittent material discharge, which makes it easy to switch to another hole after the current hole is grouted, thus avoiding the waste of mud. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0024] Figure 2 This is a side view of the overall structure of the present invention;

[0025] Figure 3 This is a top view of the internal structure of the grouting cylinder of the present invention;

[0026] Figure 4 This is a partial structural diagram of the grouting cylinder of the present invention;

[0027] Figure 5 This is a schematic diagram of the anti-coagulation mechanism of the present invention;

[0028] Figure 6 This is a schematic diagram of the structure of the auxiliary component of the present invention;

[0029] Figure 7 For the present invention Figure 6 Enlarged structural diagram at point A in the middle.

[0030] In the diagram: 1. Grouting cylinder; 2. Support frame; 3. Chassis; 5. Reciprocating threaded groove; 6. Motor; 7. Conical bucket; 8. Conveying pipe; 10. Connecting pipe; 11. Clamp; 12. Mud pump; 13. Corrugated pipe; 14. Grouting nozzle; 15. Fixed bracket; 16. Feed port; 4. Anti-solidification mechanism; 401. Drive rod; 402. Connecting ring; 403. Connecting strip; 404. Connecting groove; 405. Connecting rod; 406. Scraper ring; 407. Scraper; 9. Auxiliary components; 901. Fixed ring; 902. Sliding rod; 903. Sleeve rod; 904. Sealing block; 905. Limiting groove; 906. Limiting block; 907. Spring; 908. Sealing groove. Detailed Implementation

[0031] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0032] Example 1, please refer to Figure 1-7 This invention provides a technical solution: a grouting device for road and bridge construction, comprising a grouting cylinder 1, a support frame 2 fixedly connected to the outer wall of the grouting cylinder 1, and a vehicle frame 3 fixedly connected to the bottom of the support frame 2; an anti-solidification mechanism 4 is provided on the inner wall of the grouting cylinder 1, and a reciprocating threaded groove 5 is opened on the inner wall of the grouting cylinder 1 corresponding to the anti-solidification mechanism 4; a motor 6 is fixedly installed on the top of the grouting cylinder 1; and a conical hopper 7 is fixedly connected to the bottom of the grouting cylinder 1, with a conveying pipe 8 fixedly connected to the bottom of the conical hopper 7. A connecting pipe 10 is fitted to the bottom outer wall of the grouting cylinder 1, and a clamp 11 is provided on the outer wall of the connecting pipe 10. Then, a mud pump 12 is provided at the other end of the connecting pipe 10, and the other end of the connecting pipe 10 is connected to the inlet of the mud pump 12. A corrugated pipe 13 is fixedly connected to the outlet of the mud pump 12, and a slurry nozzle 14 is fixedly connected to the other end of the corrugated pipe 13. A fixing bracket 15 is fixedly installed on the top of the frame 3 corresponding to the slurry nozzle 14, and a feeding port 16 is fixedly installed on the top of the grouting cylinder 1.

[0033] The anti-solidification mechanism 4 includes a driving component and a scraping component. The driving component is driven by the motor 6 so that the motor 6 drives the scraping component to perform a cyclic scraping operation on the inner wall of the grouting cylinder 1.

[0034] Furthermore, the driving component includes a driving rod 401, the top of which extends through to the outside of the grouting cylinder 1, the top of the connecting strip 403 is flush with the top inner wall of the grouting cylinder 1, and the bottom of the connecting strip 403 is flush with the bottom of the grouting cylinder 1.

[0035] Furthermore, the scraping component includes a connecting rod 405, and the bottom inclined surface of the scraper 407 slides in contact with the inclined surface of the cone 7;

[0036] More specifically, in this embodiment, when the device is used, the mixture of cement and concrete is first put into the feed port 16 at the top of the grouting cylinder 1. Then, the device is moved to the vicinity of the hole. Then, the grouting nozzle 14 is taken out from the fixed bracket 15. Then, the mud pump 12 is started. The mud pump 12 is used to extract the mud in the grouting cylinder 1 and inject it into the hole through the grouting nozzle 14.

[0037] Next, during the grouting process, the motor 6 is started. One end of the output shaft of the motor 6 is fixedly connected to the extension end of the drive rod 401, so that the drive rod 401 can be rotated by the motor 6. Then, a connecting ring 402 is attached to the outer wall of the drive rod 401, and a connecting strip 403 is symmetrically fixed to the outer wall of the drive rod 401. The connecting ring 402 has a connecting groove 404 corresponding to the connecting strip 403. At the same time, the outer wall of the connecting strip 403 slides against the inner wall of the connecting groove 404. Thus, the drive rod 401 can synchronously drive the connecting ring 402 to rotate through the engagement between the connecting strip 403 and the connecting groove 404.

[0038] Next, the two connecting rods 405 are fixedly connected to the outer wall of the connecting ring 402 at their close ends, and a scraper ring 406 is fixedly connected to the two connecting rods 405 at their far ends. This allows the scraper ring 406 to rotate through the two connecting rods 405. Then, the outer wall of the scraper ring 406 is in contact with the inner wall of the grouting cylinder 1, and the outer wall of the scraper ring 406 is threadedly connected to the inner wall of the reciprocating threaded groove 5. This allows the rotating scraper ring 406 to move up and down in a cycle under the restriction of the reciprocating threaded groove 5, thereby enabling the reciprocating scraping operation on the inner wall of the grouting cylinder 1 and preventing some mud from sticking to the wall and solidifying into lumps inside the cylinder.

[0039] Next, scraper blades 407 are fixedly connected at equal intervals to the bottom of scraper ring 406, so that scraper ring 406 can synchronously drive scraper blades 407 to rise and fall, and continuously stir and disperse the mud inside grouting cylinder 1. At the same time, the top of connecting strip 403 is flush with the top inner wall of grouting cylinder 1, and the bottom of connecting strip 403 is flush with the bottom of grouting cylinder 1. The bottom inclined surface of scraper blade 407 slides in contact with the inclined surface of cone 7. So when scraper ring 406 descends to the lowest point of grouting cylinder 1, scraper blade 407 can scrape the inclined surface of cone 7, ensuring the mixing quality of this device.

[0040] As described above, during the grouting process, the motor 6 drives the scraper ring 406 to reciprocate scraping the inner wall of the grouting cylinder 1, preventing some slurry from clumping and solidifying inside the cylinder. It can also scrape the inclined surface of the cone hopper 7, and simultaneously work with the scraper 407 to stir and disperse the scraped slurry, ensuring the mixing quality of the device and thus ensuring the grouting quality during the grouting process.

[0041] In Example 2, based on the above examples, an auxiliary component 9 is provided on the inner wall of the conveying pipe 8, and the auxiliary component 9 is driven by the scraping component, so as to use the scraping component to drive the auxiliary component 9 to control the flow of mud by lifting and lowering.

[0042] Furthermore, the auxiliary component 9 includes a fixing ring 901, and a sealing block 904 is fixedly connected to the bottom of the sleeve rod 903. The outer wall of the slide rod 902 is symmetrically provided with limiting grooves 905. Then, the inner wall of the sleeve rod 903 is fixedly connected to the limiting groove 905 with a limiting block 906. The outer wall of the limiting block 906 slides against the inner wall of the limiting groove 905. Subsequently, the other end of the spring 907 is fixedly connected to the bottom inner wall of the sleeve rod 903. A sealing groove 908 is provided through the center of the sealing block 904. The inner wall of the sealing groove 908 slides against the outer wall of the drive rod 401. At the same time, the outer wall of the slide rod 902 slides against the inner wall of the sleeve rod 903, and the outer wall of the sealing block 904 slides against the inner wall of the delivery pipe 8.

[0043] More specifically, in this embodiment, during the grouting process, when the grouting of the current hole is completed, the grout nozzle 14 is generally moved directly to another nearby hole to continue the grouting operation, so as to avoid the frequent start and stop of the mud pump 12 causing overheating damage. This means that the grout nozzle 14 is still grouting during the process of moving to another hole, which causes a large loss in the entire grouting process.

[0044] Therefore, several scrapers 407 are fixedly connected to the outer wall of the fixed ring 901 at their near ends, so that when the scrapers 407 descend, they can synchronously drive the fixed ring 901 to descend. Then, slide rods 902 are fixedly connected at equal intervals to the bottom of the fixed ring 901, and the outer wall of the slide rods 902 is provided with sleeve rods 903. A spring 907 is fixedly connected to the bottom of the slide rods 902, so that the fixed ring 901 can drive the slide rods 902 to compress the spring 907, thereby driving the sleeve rods 903 to descend. The rod 903 descends, and at this time, a sealing block 904 is fixedly connected to the bottom of the rod 903, which can drive the sealing block 904 to descend. A sealing groove 908 is opened through the center of the sealing block 904, and the inner wall of the sealing groove 908 slides against the outer wall of the drive rod 401. So when the sealing block 904 descends to a certain distance, the sealing groove 908 does not contact the bottom outer wall of the drive rod 401, so that the mud can flow normally through the conveying pipe 8.

[0045] When the scraper 407 rises, the sealing block 904 is at the lowest point of the conveying pipe 8 under the pressure of the spring 907, meaning it is still not in contact with the bottom outer wall of the drive rod 401. When the scraper 407 approaches the highest point, the spring 907 releases all its force. A limiting groove 905 is symmetrically opened on the outer wall of the slide rod 902, and a limiting block 906 is fixedly connected to the inner wall of the sleeve rod 903 corresponding to the limiting groove 905. The outer wall of the limiting block 906 slides against the inner wall of the limiting groove 905. Thus, when the scraper 407 approaches the highest point, the limiting block 906 will drive the sealing block 904 to rise, causing the inner wall of the sealing groove 908 to slide against the outer wall of the drive rod 401. The outer wall of the sealing block 904 slides against the inner wall of the conveying pipe 8, thereby sealing the conveying pipe 8 and preventing the slurry from flowing, achieving the effect of intermittent discharge.

[0046] Furthermore, in one lifting and lowering cycle of scraper 407, the sealing time is much shorter than the flow time. Based on the depth of the pre-drilled grouting hole and the pressure of the outlet valve of mud pump 12, it can be ensured that one hole is grouted in one lifting and lowering cycle during the flow cycle, and then moved to another nearby hole during the sealing cycle.

[0047] Furthermore, when cleaning is carried out after all the holes have been grouted, the mud pump 12 can be turned off and water can be poured into the feed port 16. By the rotation of the drive rod 401, the lifting and lowering of the scraper ring 406 and the lifting and lowering of the sealing block 904, the inside of the grouting cylinder 1, the cone hopper 7 and the conveying pipe 8 can be thoroughly cleaned without manual cleaning, making cleaning convenient and easy for subsequent use.

[0048] As described above, during the grouting process, the scraper 407 can drive the sealing block 904 to move up and down within the conveying pipe 8 to scrape away blockages. At the same time, the cooperation between the sealing groove 908 and the drive rod 401 achieves intermittent material discharge, making it easy to switch to another hole after the current hole is grouted, thus avoiding slurry waste.

[0049] Working principle: First, the mixture of cement and concrete is put into the grouting cylinder 1 through the feeding port 16 at the top. Then, the device is moved to the vicinity of the hole. Then, the grouting nozzle 14 is taken out from the fixed bracket 15. Then, the mud pump 12 is started. The mud pump 12 is used to extract the mud in the grouting cylinder 1 and inject it into the hole through the grouting nozzle 14.

[0050] Next, during the grouting process, the motor 6 is started, which drives the drive rod 401 to rotate. Through the engagement between the connecting strip 403 and the connecting groove 404, the drive rod 401 can synchronously drive the connecting ring 402 to rotate. Then, the two connecting rods 405 are fixedly connected to the outer wall of the connecting ring 402 at their close ends and to the scraper ring 406 at their far ends. Thus, the two connecting rods 405 can drive the scraper ring 406 to rotate. Then, the outer wall of the scraper ring 406 is threadedly connected to the reciprocating threaded groove 5 on the inner wall of the grouting cylinder 1. Thus, the rotating scraper ring 406 can perform a lifting and lowering cycle under the restriction of the reciprocating threaded groove 5, thereby performing a reciprocating scraping operation on the inner wall of the grouting cylinder 1.

[0051] Then, the slurry inside the grouting cylinder 1 is continuously stirred and dispersed by the scraper 407 at the bottom of the scraper ring 406, and when the scraper ring 406 descends to the lowest point of the grouting cylinder 1, the inclined surface of the cone bucket 7 can be scraped by the scraper 407.

[0052] Next, during the grouting process, when the scraper 407 descends, it can simultaneously drive the fixing ring 901 to descend and compress the spring 907, thereby driving the sleeve rod 903 to descend. At this time, the sealing block 904 is fixedly connected to the bottom of the sleeve rod 903, which can drive the sealing block 904 to descend. The sealing block 904 has a sealing groove 908 through its internal center, and the inner wall of the sealing groove 908 slides against the outer wall of the drive rod 401. So when the sealing block 904 descends to a certain distance, the sealing groove 908 does not contact the bottom outer wall of the drive rod 401, so that the slurry can flow normally through the conveying pipe 8.

[0053] When the scraper 407 rises, the sealing block 904 is at the lowest point of the conveying pipe 8 under the pressure of the spring 907, meaning it is still not in contact with the bottom outer wall of the drive rod 401. When the scraper 407 approaches the highest point, the spring 907 releases all its force. A limiting groove 905 is symmetrically opened on the outer wall of the slide rod 902, and a limiting block 906 is fixedly connected to the inner wall of the sleeve rod 903 corresponding to the limiting groove 905. The outer wall of the limiting block 906 slides against the inner wall of the limiting groove 905. Thus, when the scraper 407 approaches the highest point, the limiting block 906 will drive the sealing block 904 to rise, causing the inner wall of the sealing groove 908 to slide against the outer wall of the drive rod 401. The outer wall of the sealing block 904 slides against the inner wall of the conveying pipe 8, thereby sealing the conveying pipe 8 and preventing the slurry from flowing, achieving the effect of intermittent discharge.

[0054] Furthermore, in one lifting and lowering cycle of scraper 407, the sealing time is much shorter than the flow time. Based on the pre-drilled grouting hole depth and the outlet valve pressure of mud pump 12, it can be ensured that one hole is grouted in one lifting and lowering cycle during the flow cycle, and then moved to another nearby hole during the sealing cycle. When the surrounding holes are grouted, mud pump 12 can be stopped, and the device can be moved to the vicinity of a new ungrouted hole to start again.

[0055] Furthermore, when cleaning is carried out after all the holes have been grouted, the mud pump 12 can be turned off and water can be poured into the feed port 16. By the rotation of the drive rod 401, the lifting and lowering of the scraper ring 406 and the lifting and lowering of the sealing block 904, the inside of the grouting cylinder 1, the cone hopper 7 and the conveying pipe 8 can be thoroughly cleaned without manual cleaning, making cleaning convenient and easy for subsequent use.

[0056] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A grouting device for road and bridge construction, comprising a grouting cylinder (1), characterized in that: The outer wall of the grouting cylinder (1) is fixedly connected to a support frame (2), and the bottom of the support frame (2) is fixedly connected to a vehicle frame (3). The inner wall of the grouting cylinder (1) is provided with an anti-solidification mechanism (4) for the mixture, and the inner wall of the grouting cylinder (1) is provided with a reciprocating thread groove (5) corresponding to the anti-solidification mechanism (4). The top of the grouting cylinder (1) is fixedly installed with a motor (6). The anti-solidification mechanism (4) includes a driving component and a scraping component. The driving component is driven by the motor (6) so that the motor (6) drives the scraping component to perform a cyclic scraping operation on the inner wall of the grouting cylinder (1). The bottom of the grouting cylinder (1) is fixedly connected to a cone bucket (7), and the bottom of the cone bucket (7) is fixedly connected to a conveying pipe (8). An auxiliary component (9) is provided on the inner wall of the conveying pipe (8). The auxiliary component (9) is driven by the scraping component, so as to use the scraping component to drive the auxiliary component (9) to control the flow of mud by lifting and lowering. The driving component includes a driving rod (401), and the top of the driving rod (401) extends through to the outside of the grouting cylinder (1). One end of the output shaft of the motor (6) is fixedly connected to the extended end of the driving rod (401). A connecting ring (402) is fitted to the outer wall of the drive rod (401), and a connecting strip (403) is symmetrically fixed to the outer wall of the drive rod (401). A connecting groove (404) is opened inside the connecting ring (402) corresponding to the connecting strip (403). The outer wall of the connecting strip (403) slides in contact with the inner wall of the connecting groove (404). The top of the connecting strip (403) is flush with the top inner wall of the grouting cylinder (1), and the bottom of the connecting strip (403) is flush with the bottom of the grouting cylinder (1). The scraping component includes connecting rods (405), with the two connecting rods (405) having their close ends fixedly connected to the outer wall of the connecting ring (402), and the two connecting rods (405) having their far ends fixedly connected to a scraping ring (406). The outer wall of the scraping ring (406) is in contact with the inner wall of the grouting cylinder (1), and the outer wall of the scraping ring (406) is threadedly connected to the inner wall of the reciprocating threaded groove (5). The scraper ring (406) is fixedly connected to the bottom of the scraper (407) at equal intervals, and the bottom inclined surface of the scraper (407) slides in contact with the inclined surface of the cone (7). The auxiliary component (9) includes a retaining ring (901), and one end of several scrapers (407) that are close to each other is fixedly connected to the outer wall of the retaining ring (901); The bottom of the fixed ring (901) is fixedly connected with a sliding rod (902) at equal intervals, and the outer wall of the sliding rod (902) is provided with a sleeve rod (903), and the bottom of the sleeve rod (903) is fixedly connected with a sealing block (904). The outer wall of the slide rod (902) is symmetrically provided with limiting grooves (905), and the inner wall of the sleeve rod (903) is fixedly connected to the limiting groove (905) with a limiting block (906). The outer wall of the limiting block (906) slides in contact with the inner wall of the limiting groove (905).

2. The grouting device for road and bridge construction according to claim 1, characterized in that, A spring (907) is fixedly connected to the bottom of the slide rod (902), and the other end of the spring (907) is fixedly connected to the bottom inner wall of the sleeve rod (903).

3. A grouting device for road and bridge construction according to claim 2, characterized in that, The sealing block (904) has a sealing groove (908) through its center, and the inner wall of the sealing groove (908) slides in contact with the outer wall of the drive rod (401).

4. A grouting device for road and bridge construction according to claim 3, characterized in that, The outer wall of the slide rod (902) slides against the inner wall of the sleeve rod (903), and the outer wall of the sealing block (904) slides against the inner wall of the conveying pipe (8).

5. A grouting device for road and bridge construction according to claim 4, characterized in that, A connecting pipe (10) is attached to the bottom outer wall of the conveying pipe (8), and a clamp (11) is provided on the outer wall of the connecting pipe (10). A mud pump (12) is provided at the other end of the connecting pipe (10), and the other end of the connecting pipe (10) is connected to the feed port of the mud pump (12).

6. A grouting device for road and bridge construction according to claim 5, characterized in that, The outlet of the mud pump (12) is fixedly connected to a corrugated pipe (13), and the other end of the corrugated pipe (13) is fixedly connected to a slurry nozzle (14); a fixed bracket (15) is fixedly installed on the top of the frame (3) corresponding to the slurry nozzle (14), and a feeding port (16) is fixedly installed on the top of the grouting cylinder (1).

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