Sleeve valve grouting equipment for enhancing foundation bearing capacity and its application in runway reinforcement

Abstract

The present invention relates to the technical field related to filling consolidation reinforcement, specifically sleeve valve grouting equipment for enhancing the bearing capacity of foundations, including a grouting device and a sleeve valve pipe structure connected to the grouting device via a grouting pump; the sleeve valve pipe structure includes a sleeve pipe placed in a hole position and a grouting pipe placed in the sleeve pipe after a casing material is filled between the sleeve pipe and the hole wall, the sleeve pipe is provided with a grouting hole, and its outer wall is also covered with a rubber sleeve that covers the grouting hole, the grouting pipe is provided with a grouting hole, and a sealing ring is also provided in the sleeve pipe; after the slurry enters the grouting pipe, it enters the sleeve pipe through the grouting hole, the rubber sleeve acts as a one-way valve, and when the pressure in the sleeve pipe increases, the slurry will rush through the grouting hole to open the rubber sleeve and squeeze the casing material, and the slurry will be injected into the soil gaps of the stratum to fill the gaps in the bottom layer, and the filling material will solidify the soil, thereby improving the bearing capacity of the foundation. The present invention also proposes the application of sleeve valve grouting equipment in runway reinforcement.

Description

Technical Field

[0001] The present invention relates to the technical field related to filling consolidation reinforcement, and in particular to sleeve valve grouting equipment for enhancing foundation bearing capacity and application thereof in runway reinforcement. Background Art

[0002] Runway grouting reinforcement is a common maintenance method used to enhance the bearing capacity of the pavement structure and eliminate slab bottom voids. Grout is injected into the soil to increase the strength of the stratum and reduce its permeability.

[0003] In the work of enhancing the bearing capacity of the foundation through grouting consolidation, slurrying is a vital task. Cement, water glass and other materials are usually mixed and stirred in a certain proportion. In the grouting operation, the consistency of the slurry needs to meet certain requirements. Especially when the consistency of the slurry is too high, the fluidity of the slurry in smaller cracks is poor. As the consistency of the slurry increases, the deposition point will be closer to the hole wall. The slurry is too thick, which may cause crack blockage. Therefore, it is difficult to ensure the sufficiency of the slurry filling the cracks, so that the bearing capacity of the foundation cannot reach the ideal effect. To this end, when preparing the slurry, a certain amount of admixture needs to be added to it to improve the fluidity of the slurry and avoid the above problems. However, in the existing slurrying device, when stirring the slurry, the stirring component only has a rotating action, and its movement route is fixed. There are many stirring dead angles, so that the slurry stirring is still to be improved when preparing the slurry. Summary of the Invention

[0004] The purpose of the present invention is to provide a sleeve valve grouting device for enhancing the bearing capacity of the foundation and its application in runway reinforcement, so as to solve the problems raised in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] Sleeve valve grouting equipment for enhancing foundation bearing capacity, comprising a grouting device and a sleeve valve pipe structure connected to the grouting device via a grouting pump;

[0007] The sleeve valve tube structure includes a sleeve tube placed in the hole position and a grouting tube placed in the sleeve tube after a shell material is filled between the sleeve tube and the hole wall. The sleeve tube is provided with a grouting hole, and its outer wall is also covered with a rubber sleeve covering the grouting hole. The grouting tube is provided with a grouting hole, and a sealing ring is also provided in the sleeve tube.

[0008] The pulping device includes a frame and an assembly ring fixed on the frame, and further includes:

[0009] a first cylinder and a second cylinder, wherein the first cylinder is rotatably mounted on the assembly ring and connected to a threaded drive mechanism mounted on the frame via a one-way transmission mechanism; the second cylinder is connected to a momentary trigger mechanism mounted on the frame, the momentary trigger mechanism being capable of driving the second cylinder to rise and fall within the first cylinder, and a stirring mechanism is provided within the second cylinder;

[0010] A circulation channel is formed between the first cylinder and the second cylinder. When the first cylinder rotates, the circulation channel is formed, which can promote the slurry at the bottom of the second cylinder to be circulated and transported upward through the circulation channel.

[0011] As a further embodiment of the present invention, a spiral blade is provided on the inner wall of the first cylinder, and an annular protrusion and a conical protrusion are provided on the upper end and the bottom wall of the first cylinder, respectively. The stirring mechanism includes a first drive motor mounted on the frame and a vertical shaft connected to the output end of the first drive motor.

[0012] The vertical shaft passes through the first cylinder and extends into the second cylinder. The vertical shaft is sealed and rotatably connected to the first cylinder. The vertical shaft is provided with a stirring blade and is connected to a plurality of arc-shaped scrapers through a plurality of sets of elastic telescopic rods. The arc-shaped scrapers are slidably fitted with the inner wall of the second cylinder, and a spiral inclined surface is formed on the bottom of the arc-shaped scraper.

[0013] As a further solution of the present invention: the threaded drive mechanism includes two screws rotatably mounted on the frame and two second drive motors mounted on the frame, the output end of the second drive motor is connected to the screw, one of the screws is connected to the one-way transmission mechanism, a cross plate is provided between the two screws, the cross plate is threadedly connected to the two screws, and the instantaneous trigger mechanism is installed on the cross plate.

[0014] As a further solution of the present invention: a guide groove is provided on the upper longitudinal direction of the transverse plate, and the instantaneous trigger mechanism includes an elastic sliding component installed in the guide groove and a follower structure connecting the elastic sliding component and the second cylinder. The elastic sliding component can move along the longitudinal direction of the transverse plate and prompt the follower structure to drive the bottom end of the second cylinder to abut against the bottom wall of the first cylinder to form the circulation channel.

[0015] As a further solution of the present invention: the elastic sliding assembly includes a slider slidingly arranged in the guide groove, a horizontal column passing through the slider is also fixed in the guide groove, a second cylindrical spring is sleeved on the outer periphery of the horizontal column, the two ends of the second cylindrical spring are respectively connected to the inner wall of the guide groove and the slider, and the slider is connected to a limiting structure on the side facing the first cylinder.

[0016] As a further solution of the present invention: the limiting structure includes a limiting plate fixedly mounted on the frame, the slider is fixedly provided with a protrusion on one side facing the limiting plate, the protrusion extends into a limiting groove provided on the limiting plate and is slidably connected to the limiting plate;

[0017] The limiting groove includes a first slide groove, a second slide groove, a third slide groove, a fourth slide groove and a fifth slide groove which are connected to each other. The fifth slide groove is inclined, and its end away from the fourth slide groove is connected to the first slide groove and the second slide groove. A deflection member is also hinged on the limiting plate. The deflection member is located at an end of the fifth slide groove away from the fourth slide groove, and a torsion spring is connected to the rotating shaft.

[0018] As a further solution of the present invention: a crossbeam is fixed on the frame, and a connecting block is slidably provided on the crossbeam, and the follower structure includes a transverse plate fixed to the connecting block and a follower plate fixed to the side of the slider away from the boss, and the follower plate is slidably fitted with the transverse plate;

[0019] Wherein, a driven plate fixedly connected to the second cylinder is slidably provided on the frame, a driving column is fixed on the transverse plate, and the driving column extends into the inclined groove provided on the driven plate and is slidably connected to the driven plate.

[0020] As a further solution of the present invention: a gear ring is fixed to the outer wall of the first cylinder, the gear ring is engaged with a gear rotatably mounted on the frame, the rotating shaft of the gear is connected to a guide cylinder rotatably mounted on the frame through a transmission belt, and the guide cylinder is connected to the screw rod through a one-way matching structure.

[0021] As a further solution of the present invention: a plurality of drive teeth are equidistantly provided along the circumference of one end of the screw rod facing the guide cylinder, the one-way matching structure includes a transmission shaft slidably sleeved with the guide cylinder, a plurality of grooves are provided along the circumference of one end of the transmission shaft facing the screw rod that are adapted to the drive teeth, a first abutting surface and a second abutting surface are formed in the grooves, the first abutting surface intersects with the central axis of the transmission shaft, and the central axis of the transmission shaft is located on the second abutting surface;

[0022] In which, a first cylindrical spring is also provided in the guide cylinder, one end of the first cylindrical spring is connected to the inner wall of the guide cylinder, and the other end is connected to the end of the transmission shaft away from the screw rod, and the outer wall of the transmission shaft is formed with two strip-shaped protrusions, and the inner wall of the guide cylinder is provided with two strip-shaped grooves adapted to the strip-shaped protrusions.

[0023] The sleeve valve grouting equipment for enhancing foundation bearing capacity is used in runway reinforcement.

[0024] Compared with the prior art, the present invention has the following beneficial effects:

[0025] By arranging the second cylinder inside the first cylinder with a gap reserved between the two, when the screw drive mechanism is working in the forward direction, the second cylinder is in an upward state, and when the screw drive mechanism is working in the reverse direction, the instantaneous trigger mechanism causes the bottom end of the second cylinder to abut against the bottom wall of the first cylinder, thereby forming a circulation channel between the inner wall of the first cylinder and the outer wall of the second cylinder;

[0026] Secondly, the one-way transmission mechanism can drive the first cylinder to rotate after the circulation channel is formed. The spiral blades on the inner wall of the first cylinder can enable the slurry at the bottom to be transported upward through the circulation channel and finally circulate to the upper part of the second cylinder.

[0027] Therefore, during the slurry preparation and stirring process, the slurry can be circulated from bottom to top, avoiding dead corners in stirring, significantly improving the adequacy of stirring, and ensuring that the fluidity of the slurry is effectively improved. Ultimately, it is ensured that the slurry can smoothly and fully fill the cracks in the bottom layer and enhance the bearing capacity of the foundation;

[0028] In addition, when the stirring mechanism moves, it can drive multiple arc-shaped scrapers to slide along the inner wall of the second cylinder. The arc-shaped scrapers can scrape off the slurry adhering to the inner wall of the second cylinder, and the spiral inclined grooves arranged on the arc-shaped scrapers can enable the scraped slurry to be discharged downward, ensuring sufficient circulation of the slurry. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 A schematic structural diagram of an embodiment of sleeve valve grouting equipment for enhancing foundation bearing capacity.

[0030] Figure 2 A schematic structural diagram of a sleeve valve pipe structure in one embodiment of a sleeve valve grouting device for enhancing foundation bearing capacity.

[0031] Figure 3 A schematic structural diagram of a grouting device in one embodiment of a sleeve valve grouting device for enhancing foundation bearing capacity.

[0032] Figure 4 A schematic structural diagram of a grouting device from another angle in one embodiment of a sleeve valve grouting equipment for enhancing foundation bearing capacity.

[0033] Figure 5 A schematic structural diagram of a grouting device from another angle in an embodiment of sleeve valve grouting equipment for enhancing foundation bearing capacity.

[0034] Figure 6 A schematic structural diagram of a frame in one embodiment of sleeve valve grouting equipment for enhancing foundation bearing capacity.

[0035] Figure 7 Schematic diagram of the internal structure of the first cylinder and the second cylinder in an embodiment of the sleeve valve grouting equipment for enhancing the bearing capacity of the foundation.

[0036] Figure 8 A schematic diagram of the stirring mechanism structure in one embodiment of sleeve valve grouting equipment for enhancing foundation bearing capacity.

[0037] Figure 9 Exploded view of the structure of the instantaneous trigger mechanism in one embodiment of the sleeve valve grouting equipment for enhancing the bearing capacity of the foundation.

[0038] Figure 10 An exploded diagram of the structure of a one-way transmission mechanism in one embodiment of a sleeve valve grouting device for enhancing foundation bearing capacity.

[0039] Figure 11 A schematic diagram of the construction process of an embodiment of sleeve valve grouting equipment for enhancing the bearing capacity of the foundation.

[0040] In the figure: 1, sleeve tube; 101, grouting hole; 2, grouting pipe; 201, grouting hole; 3, sealing ring; 4, rubber sleeve; 5, frame; 6, first cylinder; 601, spiral blade; 602, annular protrusion; 603, conical protrusion; 604, control valve; 7, second cylinder; 8, assembly ring; 9, first drive motor; 10, vertical shaft; 11, guide cylinder; 1101, strip groove; 12, transmission shaft; 1201, first abutment surface; 1202, second abutment surface; 1203, strip protrusion; 13, arc scraper; 1301, spiral inclined surface; 14, first cylindrical spring; 1 5. Gear ring; 16. Gear; 17. Second drive motor; 18. Screw; 1801. Drive tooth; 19. Cross plate; 1901. Guide groove; 20. Cross column; 21. Slider; 2101. Boss; 22. Second cylindrical spring; 23. Limiting plate; 2301. First slide groove; 2302. Second slide groove; 2303. Third slide groove; 2304. Fourth slide groove; 2305. Fifth slide groove; 24. Deflection member; 25. Follower plate; 26. Transverse plate; 2601. Drive column; 27. Cross beam; 28. Connecting block; 29. ​​Follower plate; 2901. Inclined groove; 30. Transmission belt. DETAILED DESCRIPTION

[0041] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0042] In addition, when an element in the present invention is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be an intermediate element. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only implementation method.

[0043] See also Figures 1-11 In an embodiment of the present invention, a sleeve valve grouting device for enhancing the bearing capacity of a foundation includes a grouting device and a sleeve valve pipe structure connected to the grouting device via a grouting pump; the sleeve valve pipe structure includes a sleeve pipe 1 placed in a hole position and a grouting pipe 2 placed in the sleeve pipe 1 after a shell material is filled between the sleeve pipe 1 and the hole wall; the sleeve pipe 1 is provided with a grouting hole 101, and its outer wall is further provided with a rubber sleeve 4 covering the grouting hole 101; the grouting pipe 2 is provided with a grouting hole 201, and a sealing ring 3 is further provided in the sleeve pipe 1;

[0044] The pulping device includes a frame 5 and an assembly ring 8 fixed to the frame 5, and further includes:

[0045] The first cylinder 6 and the second cylinder 7, the first cylinder 6 is rotatably mounted on the assembly ring 8, and is connected to the threaded drive mechanism mounted on the frame 5 through a one-way transmission mechanism, the second cylinder 7 is connected to an instantaneous trigger mechanism provided on the frame 5, the instantaneous trigger mechanism can drive the second cylinder 7 to rise and fall in the first cylinder 6, and a stirring mechanism is provided in the second cylinder 7; a circulation channel is formed between the first cylinder 6 and the second cylinder 7, and when the first cylinder 6 rotates, the circulation channel is formed, which can prompt the slurry at the bottom of the second cylinder 7 to be circulated upward through the circulation channel.

[0046] Furthermore, a control valve 604 is further provided at the bottom of the first cylinder 6. During actual construction, the control valve 604 is connected to the inlet of the grouting pump through a delivery pipe, and the outlet of the grouting pump is connected to the grouting pipe 2.

[0047] Before grouting begins, a hole is first drilled on the ground using a drill rig, and then the sleeve tube 1 is placed in the hole. Then, a casing material is injected between the hole wall and the outer wall of the sleeve tube 1 to close the gap between the sleeve tube 1 and the hole wall until the sleeve tube 1 is stable. Then, a grouting pipe 2 is placed into the sleeve tube 1. After the slurry making device completes slurrying, grouting can begin.

[0048] Specifically, after the slurry enters the grouting pipe 2, it enters the sleeve tube 1 through the slurry discharge hole 201. The rubber sleeve 4 acts as a one-way valve. After the pressure in the sleeve tube 1 increases, the slurry will rush through the grouting hole 101 to open the rubber sleeve 4 and squeeze the shell material. The slurry is injected into the gaps in the formation, filling the gaps in the bottom layer. After consolidation, it plays a role in enhancing the bearing capacity of the foundation.

[0049] Please refer again Figure 7 and Figure 8 , a spiral blade 601 is provided on the inner wall of the first cylinder 6, and an annular protrusion 602 and a conical protrusion 603 are respectively provided on the upper end and the bottom wall of the first cylinder 6. The stirring mechanism includes a first drive motor 9 mounted on the frame 5 and a vertical shaft 10 connected to the output end of the first drive motor 9; the vertical shaft 10 passes through the first cylinder 6 and extends into the second cylinder 7. The vertical shaft 10 is sealed and rotatably connected to the first cylinder 6, and a stirring blade is provided on the vertical shaft 10. A plurality of arc scrapers 13 are also connected to the arc scraper 13 through multiple groups of elastic telescopic rods. The arc scraper 13 slides in contact with the inner wall of the second cylinder 7, and a spiral inclined surface 1301 is formed on the bottom of the arc scraper 13.

[0050] In detail, the elastic telescopic rod is an application of the existing structure, that is, it includes an assembly tube fixed on the vertical shaft 10 and a telescopic rod sealed and slidably fitted with the assembly tube, the telescopic rod is fixed to the arc scraper 13, and the end away from the arc scraper 13 is connected to a compression spring arranged inside the assembly tube, under the elastic support of the compression spring, the arc scraper 13 can be ensured to fit tightly with the interior of the second cylinder 7. It should be noted that the telescopic rod needs to be guided so that it can only move along the axial direction of the assembly tube to avoid the arc scraper 13 from deflecting during the scraping process. When the first drive motor 9 drives the vertical shaft 10 to rotate, the arc scraper 13 will perform a circular motion along the inner wall of the second cylinder 7. The direction of the vertical shaft 10 is fixed to ensure that the slurry scraped from the inner wall of the second cylinder 7 can be scraped downward under the action of the spiral inclined surface 1301.

[0051] When preparing the slurry, the raw materials are input into the second cylinder 7. The setting of the conical protrusion 603 can make the slurry in the second cylinder 7 diffuse around the bottom of the first cylinder 6, so that after the second cylinder 7 is lowered, the circulation channel is formed. The first cylinder 6 rotates and the spiral blade 601 is used to transport the slurry upward. After the slurry is transported to the top, the bottom of the annular protrusion 602 is set in a conical shape. Therefore, the slurry can re-enter the upper part of the second cylinder 7, realizing the circulation function of the slurry, ensuring the sufficient mixing of the slurry, and avoiding the admixture in the slurry from being too viscous and having poor fluidity due to insufficient mixing, which makes it difficult to fully fill the formation gaps. Therefore, the present application uses the circulation channel between the first cylinder 6 and the second cylinder 7 so that when the slurry is mixed, the slurry can circulate from bottom to top, greatly improving the sufficient mixing.

[0052] To elaborate, there are many kinds of admixtures mentioned above, and their purpose is to improve the fluidity of the slurry, delay the setting time of the slurry, etc. Therefore, when the admixtures in the slurry are not fully mixed, the performance of the slurry is difficult to achieve the ideal performance.

[0053] Please refer again Figure 4 and Figure 6 The thread drive mechanism includes two screw rods 18 rotatably mounted on the frame 5 and two second drive motors 17 mounted on the frame 5. The output end of the second drive motor 17 is connected to the screw rods 18, one of which is connected to the one-way transmission mechanism. A cross plate 19 is provided between the two screw rods 18. The cross plate 19 is threadedly connected to the two screw rods 18. The instantaneous trigger mechanism is mounted on the cross plate 19. A guide groove 1901 is provided on the cross plate 19 along the length direction. The instantaneous trigger mechanism includes an elastic sliding component mounted in the guide groove 1901 and a follower structure connecting the elastic sliding component and the second cylinder 7. The elastic sliding component is movable along the length direction of the cross plate 19 and prompts the follower structure to drive the bottom end of the second cylinder 7 to abut against the bottom wall of the first cylinder 6, so that the circulation channel is formed.

[0054] Please refer again Figure 5 and Figure 9The elastic sliding assembly includes a slider 21 slidingly arranged in the guide groove 1901, and a horizontal column 20 passing through the slider 21 is also fixed in the guide groove 1901. The outer periphery of the horizontal column 20 is provided with a second cylindrical spring 22, and the two ends of the second cylindrical spring 22 are respectively connected to the inner wall of the guide groove 1901 and the slider 21, and the slider 21 is connected to a limiting structure on the side facing the first cylinder 6. The limiting structure includes a limiting plate 23 fixedly mounted on the frame 5, and the slider 21 is fixedly provided with a boss 2101 on one side of the limiting plate 23, and the boss 2101 extends into the limiting groove provided on the limiting plate 23 and is slidably connected to the limiting plate 23; the limiting groove includes a first slide groove 2301, a second slide groove 2302, a third slide groove 2303, a fourth slide groove 2304 and a fifth slide groove 2305 that are connected, and the fifth slide groove 2305 is inclined, and its end away from the fourth slide groove 2304 is connected to the first slide groove 2301 and the second slide groove 2302, and a deflection member 24 is hinged on the limiting plate 23, and the deflection member 24 is located at the end of the fifth slide groove 2305 away from the fourth slide groove 2304, and the rotating shaft is connected to a torsion spring.

[0055] Furthermore, the purpose of setting the deflection member 24 is to limit the movement of the boss 2101 in one direction. The second drive motor 17 drives the screw rod 18 to rotate in the forward direction. During the descending process of the cross plate 19, the boss 2101 can slide along the first slide groove 2301 and the second slide groove 2302 in sequence, and then the second drive motor 17 drives the screw rod 18 to rotate in the opposite direction. When the boss 2101 slides along the fifth slide groove 2305, the boss 2101 can push the deflection member 24 to deflect toward the second slide groove 2302, so that the boss 2101 can be reset to the first slide groove 2301. After the boss 2101 is separated from the deflection member 24, the torsion spring rebounds, which can enable the deflection member 24 to be deflected and reset.

[0056] A crossbeam 27 is fixed to the frame 5, and a connecting block 28 is slidably mounted on the crossbeam 27. The follower structure includes a transverse plate 26 fixed to the connecting block 28, and a follower plate 25 fixed to the side of the slider 21 away from the boss 2101. The follower plate 25 slidably fits within the transverse plate 26. A follower plate 29 is also slidably mounted on the frame 5 and fixedly connected to the second cylinder 7. A driving post 2601 is fixed to the transverse plate 26. The driving post 2601 extends into an inclined slot 2901 provided on the follower plate 29 and is slidably coupled thereto.

[0057] When the cross plate 19 is lowered, the boss 2101 slides along the first slide groove 2301 and the second slide groove 2302 in sequence, and the follower plate 25 slides toward the outer direction of the transverse plate 26. After the cross plate 19 is lowered to the end of its stroke, the boss 2101 reaches the connection between the second slide groove 2302 and the third slide groove 2303. At this time, the second cylindrical spring 22 in the compressed state rebounds, and the slider 21 slides in the guide groove 1901. Accordingly, the boss 2101 is transferred to the connection between the third slide groove 2303 and the fourth slide groove 2304. The slider 21 drives the transverse plate 26 to move horizontally through the follower plate 25, and the driving column 2601 slides with the driven plate 29 through the inclined groove 2901, so that the driven plate 29 slides down on the frame 5, and the second cylinder 7 is in the first cylinder 6. When the second cylinder 7 is lowered, the bottom end of the second cylinder 7 abuts against the bottom wall of the first cylinder 6, and the circulation channel is formed. Subsequently, the second driving motor 17 drives the screw rod 18 to rotate in the opposite direction, so that during the rising process of the cross plate 19, the boss 2101 slides along the fourth slide groove 2304 toward the fifth slide groove 2305. After the boss 2101 enters the fifth slide groove 2305, since the fifth slide groove 2305 is inclined, the slider 21 will give way, and the second column spring 22 is compressed again until the boss 2101 is reset to the end of the first slide groove 2301 away from the second slide groove 2302. Correspondingly, the slider 21 drives the transverse plate 26 to reset through the follower plate 25, and the driving column 2601 passes through the inclined groove 2901 again to prompt the driven plate 29 to rise on the frame 5, and the second cylinder 7 rises in the first cylinder 6.

[0058] It should be emphasized that, since the descent of the second cylinder 7 is driven by the rebound of the second cylindrical spring 22 , the elastic potential energy of the second cylindrical spring 22 must be large enough to ensure that it has sufficient driving force.

[0059] Please refer again Figure 4 、 Figure 5 as well as Figure 10A gear ring 15 is fixed to the outer wall of the first cylinder 6, and the gear ring 15 is meshed with a gear 16 rotatably mounted on the frame 5. The rotating shaft of the gear 16 is connected to a guide cylinder 11 rotatably mounted on the frame 5 through a transmission belt 30. The guide cylinder 11 is connected to the screw rod 18 through a one-way matching structure. The screw rod 18 is provided with a plurality of driving teeth 1801 equidistantly along the circumference at one end facing the guide cylinder 11. The one-way matching structure includes a transmission shaft 12 that is slidably fitted with the guide cylinder 11. The transmission shaft 12 is provided with a plurality of grooves that are adapted to the driving teeth 1801 along the circumference at one end facing the screw rod 18. A first abutting surface 1201 and a second abutting surface 1202 are formed in the groove. The first abutting surface 1201 intersects with the central axis of the transmission shaft 12, and the central axis of the transmission shaft 12 is located on the second abutting surface 1202.

[0060] In which, a first cylindrical spring 14 is also provided in the guide cylinder 11, one end of the first cylindrical spring 14 is connected to the inner wall of the guide cylinder 11, and the other end is connected to the end of the transmission shaft 12 away from the screw rod 18, and the outer wall of the transmission shaft 12 is formed with two strip protrusions 1203, and the inner wall of the guide cylinder 11 is provided with two strip grooves 1101 adapted to the strip protrusions 1203.

[0061] When the screw rod 18 rotates in the forward direction, that is, when the cross plate 19 descends, the driving tooth 1801 acts on the first abutting surface 1201 during the rotation process. Since the first abutting surface 1201 intersects with the central axis of the transmission shaft 12, the transmission shaft 12 gives way and slides in the guide cylinder 11. In conjunction with the first cylindrical spring 14, during the forward rotation of the screw rod 18, the transmission shaft 12 reciprocates along the axial direction of the guide cylinder 11, and the guide cylinder 11 cannot rotate.

[0062] On the contrary, the screw rod 18 rotates in the opposite direction, and the horizontal plate 19 rises and resets during the rotation process. The driving tooth 1801 acts on the second abutment surface 1202 during the rotation process. Since the central axis of the transmission shaft 12 is located on the second abutment surface 1202, the screw rod 18 can drive the transmission shaft 12 to rotate together. The transmission shaft 12 drives the guide cylinder 11 to rotate through the strip protrusion 1203 and the strip groove 1101. The guide cylinder 11 drives the gear 16 to rotate through the transmission belt 30. The gear 16 drives the first cylinder 6 to rotate through the gear ring 15, so that the slurry located at the lower part of the second cylinder 7 can circulate through the circulation channel, ensuring the sufficiency of the slurry mixing treatment by the stirring mechanism.

[0063] Among them, it should be supplemented that, in the present application, the second cylinder 7 is arranged to be liftable. If the second cylinder 7 is fixed, the spiral blade 601 on the inner wall of the first cylinder 6 rotates, and the slurry can also be circulated from bottom to top. However, in this circulation mode, after the slurry enters the second cylinder 7, it will directly pass through the stirring blade on the vertical shaft 10. During a single circulation process, the effective mixing time of the slurry is relatively short, so the circulation time needs to be extended to ensure that the slurry is fully mixed. To this end, the present case makes the second cylinder 7 movably arranged in the first cylinder 6, and sets a threaded drive mechanism, which is divided into forward and reverse motion processes. The lifting and lowering of the second cylinder 7 and the rotation of the first cylinder 6 establish a logical sequence, that is, whenever the second cylinder 7 descends and abuts against the bottom wall of the first cylinder 6, the slurry in the circulation channel (that is, the slurry between the inner wall of the first cylinder 6 and the outer wall of the second cylinder 7) can be separated from the slurry inside the second cylinder 7. This cycle repeats itself. During the entire slurry stirring process, the slurry in the second cylinder 7 is intermittently transported upward through the circulation channel starting from the bottom. When the circulation channel is formed, the slurry at the bottom of the second cylinder 7 no longer flows between the inner wall of the first cylinder 6 and the outer wall of the second cylinder 7, thereby ensuring that the slurry can be fully and effectively mixed in the second cylinder 7.

[0064] As another embodiment of the present invention, the application of the sleeve valve grouting equipment for enhancing the bearing capacity of the foundation in runway reinforcement is also proposed.

[0065] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the invention can be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be included therein. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

[0066] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. Sleeve valve grouting equipment for enhancing foundation bearing capacity, comprising a grouting device and a sleeve valve pipe structure connected to the grouting device via a grouting pump; It is characterized by: The sleeve valve tube structure comprises a sleeve tube (1) placed in the hole position and a grouting tube (2) placed in the sleeve tube (1) after a shell material is filled between the sleeve tube (1) and the hole wall. The sleeve tube (1) is provided with a grouting hole (101), and its outer wall is also provided with a rubber sleeve (4) covering the grouting hole (101). The grouting tube (2) is provided with a grouting hole (201), and a sealing ring (3) is also provided in the sleeve tube (1). The pulping device comprises a frame (5) and an assembly ring (8) fixed on the frame (5), and further comprises: A first cylinder (6) and a second cylinder (7), wherein the first cylinder (6) is rotatably mounted on the assembly ring (8) and is connected to a threaded drive mechanism mounted on the frame (5) via a one-way transmission mechanism, and the second cylinder (7) is connected to a momentary trigger mechanism mounted on the frame (5), and the momentary trigger mechanism can drive the second cylinder (7) to rise and fall in the first cylinder (6), and a stirring mechanism is provided in the second cylinder (7); A circulation channel is formed between the first cylinder (6) and the second cylinder (7). When the first cylinder (6) rotates, the circulation channel is formed, which can promote the slurry at the bottom of the second cylinder (7) to be circulated and transported upward through the circulation channel. The thread drive mechanism comprises two screw rods (18) rotatably mounted on the frame (5), a transverse plate (19) is provided between the two screw rods (18), the transverse plate (19) is threadedly connected to the two screw rods (18), and the instantaneous trigger mechanism is mounted on the transverse plate (19); A guide groove (1901) is provided on the transverse plate (19) along the length direction, and the instantaneous trigger mechanism includes an elastic sliding component installed in the guide groove (1901) and a follower structure connecting the elastic sliding component and the second cylinder (7), the elastic sliding component can move along the length direction of the transverse plate (19), and prompts the follower structure to drive the bottom end of the second cylinder (7) to abut against the bottom wall of the first cylinder (6), so that the circulation channel is formed; The elastic sliding assembly includes a slider (21) slidingly arranged in the guide groove (1901), a transverse column (20) penetrating the slider (21) is fixed in the guide groove (1901), a second cylindrical spring (22) is sleeved on the outer periphery of the transverse column (20), two ends of the second cylindrical spring (22) are respectively connected to the inner wall of the guide groove (1901) and the slider (21), and the slider (21) is connected to a limiting structure on one side facing the first cylinder (6); The limiting structure comprises a limiting plate (23) fixedly mounted on the frame (5); a convex column (2101) is fixedly provided on one side of the slider (21) facing the limiting plate (23); the convex column (2101) extends into a limiting groove provided on the limiting plate (23) and is slidably connected to the limiting plate (23); The limiting groove includes a first slide groove (2301), a second slide groove (2302), a third slide groove (2303), a fourth slide groove (2304) and a fifth slide groove (2305) which are connected to each other. The fifth slide groove (2305) is inclined, and its end away from the fourth slide groove (2304) is connected to the first slide groove (2301) and the second slide groove (2302). A deflection member (24) is also hinged on the limiting plate (23). The deflection member (24) is located at the end of the fifth slide groove (2305) away from the fourth slide groove (2304), and the rotating shaft is connected to a torsion spring.

2. The sleeve valve grouting equipment for enhancing foundation bearing capacity according to claim 1 is characterized in that: The inner wall of the first cylinder (6) is provided with a spiral blade (601), and the upper end and the bottom wall of the first cylinder (6) are respectively provided with an annular protrusion (602) and a conical protrusion (603), and the stirring mechanism includes a first drive motor (9) mounted on the frame (5) and a vertical shaft (10) connected to the output end of the first drive motor (9); The vertical shaft (10) passes through the first cylinder (6) and extends into the second cylinder (7). The vertical shaft (10) is connected to the first cylinder (6) in a sealed and rotatable manner. The vertical shaft (10) is provided with a stirring blade and is connected to a plurality of arc-shaped scrapers (13) via a plurality of sets of elastic telescopic rods. The arc-shaped scrapers (13) are slidably fitted with the inner wall of the second cylinder (7), and a spiral inclined surface (1301) is formed at the bottom of the arc-shaped scraper (13).

3. The sleeve valve grouting equipment for enhancing foundation bearing capacity according to claim 1 is characterized in that: Two second drive motors (17) are installed on the frame (5), and the output end of the second drive motor (17) is connected to the screw rod (18), wherein one of the screw rods (18) is connected to the one-way transmission mechanism.

4. The sleeve valve grouting equipment for enhancing foundation bearing capacity according to claim 1 is characterized in that: A crossbeam (27) is fixed on the frame (5), and a connecting block (28) is slidably provided on the crossbeam (27), and the follower structure comprises a transverse plate (26) fixed to the connecting block (28) and a follower plate (25) fixed to a side of the slider (21) away from the boss (2101), and the follower plate (25) is slidably fitted with the transverse plate (26); A driven plate (29) fixedly connected to the second cylinder (7) is slidably provided on the frame (5), and a driving column (2601) is fixed on the transverse plate (26). The driving column (2601) extends into an inclined groove (2901) provided on the driven plate (29) and is slidably connected to the driven plate (29).

5. The sleeve valve grouting equipment for enhancing foundation bearing capacity according to claim 3 is characterized in that: A gear ring (15) is fixed to the outer wall of the first cylinder (6), and the gear ring (15) is engaged with a gear (16) rotatably mounted on the frame (5). The rotating shaft of the gear (16) is connected to a guide cylinder (11) rotatably mounted on the frame (5) through a transmission belt (30), and the guide cylinder (11) is connected to the screw rod (18) through a one-way matching structure.

6. The sleeve valve grouting equipment for enhancing foundation bearing capacity according to claim 5 is characterized in that: The end of the screw rod (18) facing the guide cylinder (11) is provided with a plurality of driving teeth (1801) equidistantly along the circumference, the one-way matching structure includes a transmission shaft (12) slidably fitted with the guide cylinder (11), the end of the transmission shaft (12) facing the screw rod (18) is provided with a plurality of grooves adapted to the driving teeth (1801) along the circumference, a first abutting surface (1201) and a second abutting surface (1202) are formed in the grooves, the first abutting surface (1201) intersects with the central axis of the transmission shaft (12), and the central axis of the transmission shaft (12) is located on the second abutting surface (1202); A first cylindrical spring (14) is further provided in the guide cylinder (11), one end of the first cylindrical spring (14) is connected to the inner wall of the guide cylinder (11), and the other end is connected to the end of the transmission shaft (12) away from the screw rod (18), and two strip-shaped protrusions (1203) are formed on the outer wall of the transmission shaft (12), and two strip-shaped grooves (1101) adapted to the strip-shaped protrusions (1203) are provided on the inner wall of the guide cylinder (11).

7. Application of the sleeve valve grouting equipment for enhancing foundation bearing capacity as described in any one of claims 1 to 6 in runway reinforcement.

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