Soft foundation reinforcing equipment for highway construction

Abstract

The invention discloses soft foundation reinforcing equipment for road construction, and relates to the technical field of road construction, the soft foundation reinforcing equipment comprises a rack and a lifting frame arranged on the rack in a sliding mode in the vertical direction, the rack is provided with a lifting assembly used for driving the lifting frame to slide, the lifting frame is fixedly provided with a grouting barrel, and the grouting barrel is provided with a grouting hole; the bottom of the grouting cylinder is rotationally provided with a cutter head, the cutter head is provided with a plurality of cutting blades in the circumferential direction of the cutter head, the lifting frame is provided with a power unit used for driving the cutter head to rotate, the rack is provided with a grouting mechanism used for pouring concrete into the grouting cylinder, and the side wall of the grouting cylinder is provided with a plurality of grout outlet holes. The method has the advantages that disturbance to the surrounding environment in the construction process is reduced, the construction cost and time are reduced, and the soft foundation reinforcing efficiency and quality are improved.

Description

Technical Field

[0001] The present application relates to the technical field of road construction, and in particular to a soft foundation reinforcement device for highway construction. Background Art

[0002] With the rapid development of my country's transportation industry, a large number of highway construction projects are facing complex geological conditions, especially in coastal areas and along rivers. The foundations in these areas are usually soft. The existence of such foundations has brought many challenges to highway construction, because soft foundations may lead to insufficient bearing capacity and stability of the highway.

[0003] At present, there are two main methods for strengthening soft foundations: replacement method and preloading method. The replacement method is to excavate part of the soft foundation and replace it with higher-strength materials. The preloading method is to preload the soft foundation to cause consolidation and settlement, thereby improving the bearing capacity of the foundation. Although these soft foundation reinforcement methods can improve the bearing capacity of the foundation to a certain extent, they are usually time-consuming and costly during construction and cause great disturbance to the surrounding environment. Summary of the invention

[0004] In view of the problems existing in the prior art, the present application provides a soft foundation reinforcement equipment for highway construction.

[0005] The present application provides a soft foundation reinforcement device for highway construction, which adopts the following technical solution: A soft foundation reinforcement device for highway construction comprises a frame and a lifting frame slidably arranged on the frame in a vertical direction, the frame is provided with a lifting assembly for driving the lifting frame to slide, a grouting barrel is fixedly arranged on the lifting frame, a cutter disc is rotatably arranged at the bottom of the grouting barrel, a plurality of cutting blades are arranged on the cutter disc along the circumference of the cutter disc, a power unit for driving the cutter disc to rotate is arranged on the lifting frame, a grouting mechanism for pouring concrete into the grouting barrel is arranged on the frame, and a plurality of grouting holes are arranged on the side wall of the grouting barrel.

[0006] Optionally, the lifting assembly includes a lead screw and a first driving source, the lead screw is rotatably disposed on the frame and cooperates with the lifting frame thread, and the first driving source is used to drive the lead screw to rotate.

[0007] Optionally, a mounting sleeve is provided on the cutter disc for axial sliding along the cutter disc, and the center axis of the cutter disc and the mounting sleeve coincide, the mounting sleeve is rotatably sleeved on the grouting barrel, a first elastic member is provided on the cutter disc for driving the mounting sleeve to slide away from the cutter disc, and the power unit is used to drive the mounting sleeve to rotate.

[0008] Optionally, the power unit includes a transmission shaft and a second driving source, the transmission shaft is rotatably disposed in the grouting barrel, and the transmission shaft is coaxially fixedly connected to the mounting sleeve, and the second driving source is used to drive the transmission shaft to rotate.

[0009] Optionally, the grouting mechanism includes a concrete storage tank, a concrete delivery pump, a nozzle and a feeding pipe, the concrete storage tank and the concrete delivery pump are both fixedly mounted on a frame, and the concrete delivery pump is connected to the concrete storage tank, the nozzle is fixedly mounted on a lifting frame and is connected to the interior of a grouting barrel, and both ends of the feeding pipe are respectively connected to the concrete delivery pump and the nozzle.

[0010] Optionally, a grouting plate is slidably arranged in the grouting barrel along the length direction of the grouting barrel, the grouting plate is sleeved on the transmission shaft, the lifting frame is provided with a driving component for driving the grouting plate to slide, a grouting port is opened on the grouting plate, the grouting port is used for docking with the nozzle, and a sealing component for closing the grouting port is provided on the grouting plate.

[0011] Optionally, the driving assembly includes a transmission screw and a third driving source. The transmission screw is rotatably inserted into the grouting barrel and is threadedly engaged with the grouting plate. The axial direction of the transmission screw is parallel to the length direction of the grouting barrel. The third driving source is used to drive the transmission screw to rotate.

[0012] Optionally, the sealing assembly includes a sealing plug and a second elastic member, the sealing plug is slidably disposed on the grouting plate and is located at the bottom of the grouting plate, the sealing plug is adapted to the grouting port, the second elastic member is used to drive the sealing plug to slide toward the grouting plate, and the nozzle is used to abut the sealing plug and push the sealing plug to slide away from the grouting plate.

[0013] Optionally, a side wall of the slurry pressing plate is provided with an annular groove along the circumference of the slurry pressing plate, and a rubber sealing ring is arranged in the annular groove.

[0014] Optionally, a plurality of stirring rods are fixedly arranged on the top of the blade disc.

[0015] In summary, the present application includes at least one of the following beneficial technical effects: 1. When reinforcing the soft foundation, move the equipment to the construction site, drive the lifting frame to slide up and down along the vertical direction of the frame, and the cutter head at the bottom of the grouting barrel rotates under the drive of the power unit. The cutting blade on the cutter head cuts the soft foundation soil, so that the grouting barrel penetrates into the soft foundation. After that, concrete is poured into the grouting barrel through the grouting mechanism. The concrete flows out through the slurry outlet holes on the side wall of the grouting barrel and diffuses into the surrounding soft foundation to achieve the reinforcement of the soft foundation. This solution reduces the disturbance to the surrounding environment during the construction process, reduces the construction cost and time, and improves the efficiency and quality of soft foundation reinforcement.

[0016] 2. The present application sets a grouting plate by sliding it in the grouting barrel. When the grouting barrel penetrates into the soft foundation, the grouting plate is first moved up to make the nozzle dock with the grouting port. At this time, the nozzle abuts against the sealing plug and pushes the sealing plug to slide away from the grouting plate to open the grouting port. Thereafter, concrete is delivered to the nozzle by a concrete delivery pump, and the concrete flows into the bottom of the grouting plate through the grouting port. When the space below the grouting plate is filled with concrete, the grouting plate is driven to slide downward by the driving assembly. At this time, the sealing plug closes the grouting port under the elastic force of the second elastic member, and as the grouting plate slides, the concrete below the grouting plate is evenly sprayed out from the slurry outlet of the grouting barrel under pressure, which facilitates the concrete to better enter the soft foundation and mix with the soil layer in the soft foundation.

[0017] 3. In the present application, a stirring rod is arranged at the top of the cutter disc. After the concrete enters the soft foundation, the stirring rod usually stirs the concrete and the soil layer in the soft foundation, thereby improving the mixing effect of the concrete and the soil layer in the soft foundation. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present application; Figure 2 It is a schematic diagram of the structure of the knife disc used to express the embodiment of the present application; Figure 3 This is a cross-sectional view of the structure of the grouting barrel used to express the embodiment of the present application; Figure 4 yes Figure 3 Magnified view of section A.

[0019] Explanation of the reference numerals: 1. frame; 11. screw; 12. first driving source; 13. concrete storage tank; 14. concrete delivery pump; 15. feeding pipe; 2. lifting frame; 21. transmission shaft; 22. second driving source; 23. nozzle; 24. transmission screw; 25. third driving source; 3. grouting cylinder; 31. slurry outlet; 4. cutter head; 41. cutting blade; 42. fixed shaft; 421. guide block; 43. mounting sleeve; 431. guide groove; 44. first elastic member; 45. stirring rod; 5. grouting plate; 51. grouting port; 52. sealing plug; 521. guide rod; 522. anti-slip block; 53. second elastic member; 54. annular groove; 55. rubber sealing ring. DETAILED DESCRIPTION

[0020] The following will be combined with the attached Figure 1 -Attached Figure 4, the technical solutions in the embodiments of the present invention are clearly and completely described. The described embodiments are only possible technical implementations of the present invention, not all possible implementations. Those skilled in the art can completely combine the embodiments of the present invention to obtain other embodiments without creative work, and these embodiments are also within the scope of protection of the present invention.

[0021] The inventor of this application has found that although traditional soft foundation reinforcement methods, such as replacement filling method and preloading method, can improve the bearing capacity of the foundation to a certain extent, these methods are usually time-consuming, costly and cause great disturbance to the surrounding environment. Therefore, this application discloses a soft foundation reinforcement device for highway construction, which mainly adopts the following scheme: The present application embodiment discloses a soft foundation reinforcement device for highway construction. Figure 1 , including a frame 1, a lifting frame 2 slidably arranged on the frame 1 in a vertical direction, and a grouting cylinder 3 fixedly arranged on the lifting frame 2, the length direction of the grouting cylinder 3 is vertical, a cutter disc 4 is coaxially rotated at the bottom of the grouting cylinder 3, the lifting frame 2 is provided with a power unit for driving the cutter disc 4 to rotate, a grouting mechanism for pouring concrete into the grouting cylinder 3 is provided on the frame 1, and a plurality of grouting holes 31 are provided on the side wall of the grouting cylinder 3.

[0022] Reference Figure 1 A lifting assembly for driving the lifting frame 2 to slide is provided on the frame 1, and the lifting assembly includes a lead screw 11 and a first driving source 12. The lead screw 11 is rotatably provided on the frame 1, and the axial direction of the lead screw 11 is vertical. The lead screw 11 is threadedly matched with the lifting frame 2. The first driving source 12 includes a motor, which is fixedly provided on the frame 1, and the output shaft of the motor is coaxially fixedly connected with the lead screw 11.

[0023] Reference Figure 1 A plurality of cutting blades 41 are fixedly arranged on the cutter disc 4. The cutting blades 41 are evenly spaced along the circumference of the cutter disc 4. The cutting blades 41 may be made of high-speed tool steel to ensure that the blades are sharp and wear-resistant.

[0024] Reference Figure 2 A fixed shaft 42 is fixedly provided at the top of the cutter disc 4, and a mounting sleeve 43 is slidably sleeved on the fixed shaft 42 along the length direction of the fixed shaft 42. The central axis of the cutter disc 4 and the mounting sleeve 43 coincide with each other. A guide block 421 is fixedly provided on the side wall of the fixed shaft 42, and a guide groove 431 is opened on the inner side wall of the mounting sleeve 43 along the length direction of the mounting sleeve 43. The guide block 421 is slidably set in the guide groove 431, and the mounting sleeve 43 is coaxially rotatably sleeved on the grouting tube 3.

[0025] Reference Figure 2A first elastic member 44 is provided on the cutter disc 4 for driving the mounting sleeve 43 to slide away from the cutter disc 4. The first elastic member 44 includes a first compression spring. A fixing plate is fixedly provided inside the mounting sleeve 43. The first compression spring is arranged in the mounting sleeve 43. One end of the first compression spring abuts against the top end of the fixing shaft 42, and the other end of the first compression spring abuts against the fixing plate. The mounting sleeve 43 and the first elastic member 44 are used to provide the cutter disc 4 with space to slide along the length direction of the grouting tube 3. When the cutter disc 4 encounters a hard object in a soft foundation, such as a large stone, the cutter disc 4 has a certain buffer space to avoid direct rigid contact between the cutter disc 4 and the hard object in the soft foundation, thereby causing damage to the cutter disc 4.

[0026] Reference Figure 2 A plurality of stirring rods 45 are fixedly arranged on the top of the cutter disc 4. After the concrete enters the soft foundation, the stirring rods 45 usually stir the concrete and the soil layer in the soft foundation to improve the mixing effect of the concrete and the soil layer in the soft foundation.

[0027] Reference Figure 2 , 3 The power unit includes a transmission shaft 21 and a second driving source 22. The transmission shaft 21 is rotatably arranged in the grouting tube 3, and the transmission shaft 21 is coaxially fixedly connected with the mounting sleeve 43. The second driving source 22 includes a driving motor, which is fixedly arranged on the lifting frame 2, and the output shaft of the driving motor is coaxially fixedly connected with the transmission shaft 21.

[0028] Reference Figure 1 , 3 The grouting mechanism includes a concrete storage tank 13, a concrete delivery pump 14, a nozzle 23 and a feeding pipe 15. The concrete storage tank 13 and the concrete delivery pump 14 are both fixedly arranged on the frame 1, and the inlet end of the concrete delivery pump 14 is connected to the concrete storage tank 13. The nozzle 23 is fixedly arranged on the lifting frame 2 and is connected to the interior of the grouting tube 3. One end of the feeding pipe 15 is connected to the outlet end of the concrete delivery pump 14, and the other end of the feeding pipe 15 is connected to the nozzle 23, thereby achieving the purpose of pouring concrete into the grouting tube 3.

[0029] Reference Figure 3 A grouting plate 5 is slidably arranged in the grouting cylinder 3 along the length direction of the grouting cylinder 3. The grouting plate 5 is adapted to the inside of the grouting cylinder 3, and the grouting plate 5 is sleeved on the transmission shaft 21. A driving component for driving the grouting plate 5 to slide is arranged on the lifting frame 2. The driving component includes a driving screw 24 and a third driving source 25. The driving screw 24 is rotatably penetrated in the grouting cylinder 3 and is threadedly matched with the grouting plate 5. The axial direction of the driving screw 24 is parallel to the length direction of the transmission shaft 21. The third driving source 25 includes a servo motor, which is fixedly arranged on the lifting frame 2, and the output shaft of the servo motor is coaxially fixedly connected with the driving screw 24.

[0030] Reference Figure 3 , 4 A grouting port 51 is opened on the grouting plate 5, and a sealing assembly for closing the grouting port 51 is arranged on the grouting plate 5. The sealing assembly includes a sealing plug 52 and a second elastic member 53. The sealing plug 52 is slidably arranged on the grouting plate 5 along a direction perpendicular to the grouting plate 5 and is located at the bottom of the grouting plate 5. The sealing plug 52 is adapted to the grouting port 51. Two guide rods 521 are fixedly arranged on the sealing plug 52. The length directions of the two guide rods 521 are parallel and both are slidably arranged on the grouting plate 5. Anti-slip blocks 522 are fixedly arranged on the tops of the two guide rods 521.

[0031] Reference Figure 4 The second elastic member 53 includes a second compression spring, and the two guide rods 521 are both sleeved with a second compression spring, one end of the second compression spring abuts against the grouting plate 5, and the other end of the second compression spring abuts against the anti-dropping block 522; when the grouting tube 3 penetrates into the soft foundation, the grouting plate 5 is first moved up to make the nozzle 23 dock with the grouting port 51, and at this time, the nozzle 23 abuts against the sealing plug 52 and pushes the sealing plug 52 to slide away from the grouting plate 5, so that the grouting port 51 is opened, and then the concrete is pumped to the spray nozzle 23 through the concrete delivery pump 14. The nozzle 23 delivers concrete, and the concrete flows into the bottom of the grouting plate 5 through the grouting port 51. When the space below the grouting plate 5 is filled with concrete, the grouting plate 5 is driven to slide downward. At this time, the sealing plug 52 closes the grouting port 51 under the elastic force of the second elastic member 53, and as the grouting plate 5 slides, the concrete below the grouting plate 5 is evenly ejected from the slurry outlet of the grouting tube 3 under the action of pressure, which facilitates the concrete to better enter the soft foundation and mix with the soil layer in the soft foundation.

[0032] Reference Figure 4 The side wall of the grouting plate 5 is provided with an annular groove 54 along the circumference of the grouting plate 5 , and a rubber sealing ring 55 is arranged in the annular groove 54 . The rubber sealing ring 55 is made of corrosion-resistant rubber and abuts against the inner wall of the grouting cylinder 3 to ensure that the grouting plate 5 has good sealing when moving in the grouting cylinder 3 .

[0033] The implementation principle of a soft foundation reinforcement device for highway construction in the embodiment of the present application is as follows: when reinforcing the soft foundation, the device is moved to the construction position, the lifting frame 2 is driven to slide up and down along the vertical direction of the frame 1, and the cutter head 4 at the bottom of the grouting cylinder 3 rotates under the drive of the power unit, and the cutting blade 41 on the cutter head 4 cuts the soft foundation soil, so that the grouting cylinder 3 penetrates into the soft foundation; when the grouting cylinder 3 penetrates into the soft foundation, the grouting plate 5 is first moved up to make the nozzle 23 dock with the grouting port 51, and at this time, the nozzle 23 abuts against the sealing plug 52 and pushes the sealing plug 52 to slide away from the grouting plate 5, so that the grouting port 51 is opened, and then, the grouting port 51 is opened by mixing The concrete delivery pump 14 delivers concrete to the nozzle 23, and the concrete flows into the bottom of the grouting plate 5 through the grouting port 51. When the space below the grouting plate 5 is filled with concrete, the grouting plate 5 is driven to slide downward. At this time, the sealing plug 52 closes the grouting port 51 under the elastic force of the second elastic member 53, and as the grouting plate 5 slides, the concrete under the grouting plate 5 is evenly ejected from the slurry outlet of the grouting tube 3 under pressure and diffuses into the surrounding soft foundation to reinforce the soft foundation. This solution reduces the disturbance to the surrounding environment during construction, reduces construction costs and time, and improves the efficiency and quality of soft foundation reinforcement.

[0034] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A soft foundation reinforcement device for highway construction, characterized in that: The invention comprises a frame (1) and a lifting frame (2) slidably arranged on the frame (1) in a vertical direction, wherein a lifting assembly for driving the lifting frame (2) to slide is arranged on the frame (1), a grouting cylinder (3) is fixedly arranged on the lifting frame (2), a cutter disc (4) is rotatably arranged at the bottom of the grouting cylinder (3), a plurality of cutting blades (41) are arranged on the cutter disc (4) along the circumference of the cutter disc (4), a power unit for driving the cutter disc (4) to rotate is arranged on the lifting frame (2), a grouting mechanism for pouring concrete into the grouting cylinder (3) is arranged on the frame (1), and a plurality of grouting holes (31) are arranged on the side wall of the grouting cylinder (3).

2. The soft foundation reinforcement equipment for highway construction according to claim 1 is characterized in that: The lifting assembly comprises a lead screw (11) and a first driving source (12); the lead screw (11) is rotatably arranged on the frame (1) and is threadably engaged with the lifting frame (2); and the first driving source (12) is used to drive the lead screw (11) to rotate.

3. The soft foundation reinforcement equipment for highway construction according to claim 1 is characterized in that: A mounting sleeve (43) is provided on the cutter disc (4) so ​​as to slide along the axial direction of the cutter disc (4), and the center axis of the cutter disc (4) and the mounting sleeve (43) coincide with each other. The mounting sleeve (43) is rotatably sleeved on the grouting cylinder (3). A first elastic member (44) is provided on the cutter disc (4) for driving the mounting sleeve (43) to slide in a direction away from the cutter disc (4), and the power unit is used to drive the mounting sleeve (43) to rotate.

4. The soft foundation reinforcement equipment for highway construction according to claim 3 is characterized in that: The power unit comprises a transmission shaft (21) and a second driving source (22); the transmission shaft (21) is rotatably inserted into the grouting cylinder (3), and the transmission shaft (21) is coaxially fixedly connected to the mounting sleeve (43); and the second driving source (22) is used to drive the transmission shaft (21) to rotate.

5. The soft foundation reinforcement equipment for highway construction according to claim 4 is characterized in that: The grouting mechanism comprises a concrete storage tank (13), a concrete delivery pump (14), a nozzle (23) and a feeding pipe (15); the concrete storage tank (13) and the concrete delivery pump (14) are both fixedly arranged on a frame (1), and the concrete delivery pump (14) is in communication with the concrete storage tank (13); the nozzle (23) is fixedly arranged on a lifting frame (2) and in communication with the interior of a grouting cylinder (3); and the two ends of the feeding pipe (15) are respectively in communication with the concrete delivery pump (14) and the nozzle (23).

6. The soft foundation reinforcement equipment for highway construction according to claim 5, characterized in that: A grouting plate (5) is slidably arranged in the grouting cylinder (3) along the length direction of the grouting cylinder (3); the grouting plate (5) is sleeved on the transmission shaft (21); a driving component for driving the grouting plate (5) to slide is arranged on the lifting frame (2); a grouting port (51) is opened on the grouting plate (5); the grouting port (51) is used to connect with the nozzle (23); and a sealing component for closing the grouting port (51) is arranged on the grouting plate (5).

7. The soft foundation reinforcement equipment for highway construction according to claim 6, characterized in that: The driving assembly comprises a transmission screw (24) and a third driving source (25); the transmission screw (24) is rotatably inserted into the grouting cylinder (3) and threadably engaged with the grouting plate (5); the axial direction of the transmission screw (24) is parallel to the length direction of the grouting cylinder (3); and the third driving source (25) is used to drive the transmission screw (24) to rotate.

8. The soft foundation reinforcement equipment for highway construction according to claim 6, characterized in that: The sealing assembly comprises a sealing plug (52) and a second elastic member (53); the sealing plug (52) is slidably disposed on the grouting plate (5) and is located at the bottom of the grouting plate (5); the sealing plug (52) is adapted to the grouting port (51); the second elastic member (53) is used to drive the sealing plug (52) to slide in a direction close to the grouting plate (5); and the nozzle (23) is used to abut against the sealing plug (52) and push the sealing plug (52) to slide in a direction away from the grouting plate (5).

9. The soft foundation reinforcement equipment for highway construction according to claim 6, characterized in that: The side wall of the squeezing plate (5) is provided with an annular groove (54) along the circumference of the squeezing plate (5), and a rubber sealing ring (55) is arranged in the annular groove (54).

10. The soft foundation reinforcement equipment for highway construction according to claim 1, characterized in that: A plurality of stirring rods (45) are fixedly arranged on the top end of the knife disc (4).

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