Pre-grouting construction structure for highway construction

Abstract

The utility model discloses a road construction pre-grouting construction structure, and relates to the technical field of pre-grouting construction, the road construction pre-grouting construction structure comprises a grouting pipe, the outer side of the grouting pipe is provided with a plurality of first holes used for discharging grout in a penetrating mode, the bottom end of the grouting pipe is provided with a connecting cylinder so that the grout can be discharged along the first holes, and the top of the connecting cylinder is provided with a shielding mechanism. The blocking mechanism comprises a blocking cylinder, the blocking cylinder is located on the inner side of the grouting pipe, a plurality of second open holes used for discharging grout are formed in the outer side of the blocking cylinder in a penetrating mode, the first open holes and the second open holes are formed in a staggered mode, flow guide blocks used for rapidly guiding the grout to the second open holes are arranged in the blocking cylinder, and the blocking cylinder is elastically connected with the connecting cylinder. When grouting is conducted, grout can quickly flow to the second open hole along the flow guide block, the grout is prevented from remaining on the inner side of the blocking barrel, then grout waste is reduced conveniently, and the construction cost is saved.

Description

Technical Field

[0001] The present application relates to the technical field of pre-grouting construction, and more specifically, to a pre-grouting construction structure for highway construction. Background Art

[0002] To put it simply, a highway is a public road or a road for public transportation. Objectively speaking, a highway refers to a public road between cities, between urban and rural areas, and between villages that has been approved by the competent authorities and can be used for driving. During the construction of a highway, grouting is required on the ground to support the highway.

[0003] The existing grouting structure has the following problems: after the slurry is injected into the inside of the plugging pipe, due to the flat bottom of the plugging pipe, a large amount of slurry remains in the plugging pipe and cannot be discharged, which easily leads to a waste of slurry and easily increases the construction cost. In view of this, we propose an improved highway construction pre-grouting construction structure. Utility Model Content

[0004] The utility model provides a pre-grouting construction structure for highway construction, which solves the technical problem in the prior art that after slurry is injected into the inner side of a plugging pipe, a large amount of slurry remains in the plugging pipe and cannot be discharged due to the flat bottom of the plugging pipe, thereby causing waste of slurry and increasing construction costs. The utility model can enable the slurry to quickly flow along the guide block to the second opening during grouting, preventing the slurry from remaining on the inner side of the retaining tube, thereby facilitating reduction of slurry waste and saving construction costs.

[0005] The utility model is realized by the following technical scheme: a highway construction pre-grouting construction structure, comprising a grouting pipe, a plurality of first openings for discharging slurry are formed through the outer surface of the grouting pipe, a connecting tube is provided at the bottom end of the grouting pipe so that the slurry can be discharged along the first openings, and a shielding mechanism is provided at the top of the connecting tube to prevent external foreign matter from entering the grouting pipe;

[0006] The shielding mechanism includes a baffle cylinder located in the grouting pipe, and a plurality of second openings for discharging slurry are penetrated through the outer surface of the baffle cylinder, and the first openings and the second openings are staggered. A guide block for quickly draining the slurry to the second openings is provided inside the baffle cylinder, and the baffle cylinder is elastically connected to the connecting cylinder, so as to prevent a large amount of slurry from remaining in the baffle cylinder and causing waste.

[0007] By adopting the above technical solution, when grouting is performed, the slurry can quickly flow along the guide block to the second opening, preventing the slurry from remaining inside the retaining tube, thereby reducing slurry waste and saving construction costs.

[0008] Optionally, a fixed cylinder is fixedly connected to the bottom of the retaining cylinder, a top cover is fixedly connected to the top of the fixed cylinder, the top cover is connected to a sliding rod that can move vertically, one end of the sliding rod is fixedly connected to a slide plate, the other end of the sliding rod is connected to the retaining cylinder, a spring is fixedly connected to the bottom of the slide plate for preventing the retaining cylinder from moving downward at will, and the bottom end of the spring is fixedly connected to the top of the inner wall of the fixed cylinder, so as to facilitate the use of the retaining cylinder to cover the first opening.

[0009] The above technical solution, by arranging a spring, can make the retaining cylinder squeeze the spring when the slide plate is driven to move downward through the slide bar, so that the spring deforms to increase the movement resistance of the retaining cylinder, thereby preventing the retaining cylinder from moving downward at will.

[0010] Optionally, the cross-section of the guide block is conical, and the size of the top of the guide block is smaller than the size of the bottom, and the size of the bottom of the guide block is equal to the size of the inner diameter of the retaining cylinder, so that the slurry can flow quickly along the guide block to the second opening.

[0011] The above technical solution limits the guide block so that after the slurry enters the inner side of the retaining tube, it can quickly flow along the outer wall of the guide block, so that the slurry can quickly reach the second opening for discharge, preventing the slurry from remaining inside the retaining tube.

[0012] Optionally, the connecting tube is threadedly connected to the grouting pipe, the annular groove opened at the bottom end of the grouting pipe is connected to the second sealing gasket at the bottom of the inner wall of the connecting tube, and the first sealing gasket at the top of the connecting tube is in contact with a retaining ring provided on the outer side of the grouting pipe for blocking the connecting tube, making disassembly and assembly of the connecting tube convenient and labor-saving.

[0013] By adopting the above technical solution, the first sealing gasket and the second sealing gasket are arranged, and the first sealing gasket and the second sealing gasket are squeezed in the connecting tube, so that both are squeezed and deformed, thereby facilitating the sealing of the gap between the connecting tube and the grouting pipe.

[0014] Optionally, a support rod is fixedly connected to the top of the guide block, and a connecting plate is fixedly sleeved on the other end of the support rod. The other end of the connecting plate is fixedly connected to the inner wall of the mounting ring. The mounting ring is arranged on the top of the retaining cylinder and connected by a screw and nut fixing. The mounting ring is fixedly connected with a screw and nut, which is convenient for the staff to disassemble and assemble the guide block.

[0015] This application has at least the following beneficial technical effects or advantages:

[0016] 1. By setting up a shielding mechanism, during grouting, the slurry can quickly flow along the guide block to the second opening to prevent the slurry from remaining inside the retaining tube, thereby reducing slurry waste and saving construction costs.

[0017] 2. By arranging the first sealing gasket and the second sealing gasket, the gap between the connecting tube and the grouting pipe is deformed due to the compression of the first sealing gasket and the second sealing gasket, thereby sealing the connecting tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the overall structure appearance of this application;

[0019] Figure 2 This is a schematic diagram of the decomposition structure of the shielding mechanism of the present application;

[0020] Figure 3 This is a schematic diagram of the connection structure of the connection plate, support rod and guide block of the present application;

[0021] Figure 4 This is a schematic diagram of the connecting tube structure of the present application;

[0022] Explanation of the numbers in the figure: 1. Grouting pipe; 2. Connecting tube; 3. Shielding mechanism; 31. Blocking tube; 32. Fixed tube; 33. Top cover; 34. Sliding rod; 35. Slide plate; 36. Spring; 37. Guide block; 4. First sealing gasket; 5. Second sealing gasket; 6. Support rod; 7. Mounting ring; 8. Connecting plate; 9. Screw; 10. Nut. DETAILED DESCRIPTION

[0023] The present application is further described in detail below in conjunction with the accompanying drawings.

[0024] Reference Figure 1-Figure 4 The embodiment of the present application discloses a pre-grouting construction structure for highway construction, wherein a plurality of first openings for discharging slurry are provided through the outer side of a grouting pipe 1, a connecting tube 2 is provided at the bottom end of the grouting pipe 1, so that the slurry can be discharged along the first openings, and a shielding mechanism 3 is provided at the top of the connecting tube 2 to prevent external foreign matter from entering the inner side of the grouting pipe 1.

[0025] The shielding mechanism 3 includes a blocking cylinder 31, which is located on the inner side of the grouting pipe 1. A plurality of second openings for the circulation of slurry are penetrated through the outer surface of the blocking cylinder 31. A guide block 37 for quickly draining the slurry to the second openings is provided inside the blocking cylinder 31. The blocking cylinder 31 is elastically connected to the connecting cylinder 2 to prevent a large amount of slurry from remaining in the blocking cylinder 31 and causing waste.

[0026] A fixed cylinder 32 is fixedly connected to the bottom of the retaining cylinder 31, a top cover 33 is fixedly connected to the top of the fixed cylinder 32, a vertically movable sliding rod 34 is connected to the top cover 33, a slide plate 35 is fixedly connected to the bottom of the sliding rod 34, the top of the sliding rod 34 is fixedly connected to the bottom of the retaining cylinder 31, a spring 36 for preventing the retaining cylinder 31 from moving downward at will is fixedly connected to the bottom of the slide plate 35, the bottom end of the spring 36 is fixedly connected to the top of the inner wall of the fixed cylinder 32, and the retaining cylinder 31 is used to block the first opening.

[0027] The first opening and the second opening are arranged alternately. When the slurry is not injected into the retaining cylinder 31, the first opening is blocked. When the slurry is injected into the retaining cylinder 31, the retaining cylinder 31 moves downward, so that the first opening is no longer blocked, and the slurry is discharged through the second opening and the first opening.

[0028] The tops of the retaining tube 31 and the connecting tube 2 are both open, and the bottoms of the retaining tube 31 and the connecting tube 2 are both closed, so that the bottom end of the grouting pipe 1 is sealed.

[0029] Figure 3 As shown, the cross-section of the guide block 37 is conical, and the size of the top of the guide block 37 is smaller than the size of its bottom. The size of the bottom of the guide block 37 is equal to the size of the inner diameter of the retaining cylinder 31. The slurry can flow quickly along the guide block 37 to the second opening, thereby preventing the slurry from remaining in the retaining cylinder 31.

[0030] A support rod 6 is fixedly connected to the top of the guide block 37, and a connecting plate 8 is fixedly sleeved on the outer side of the support rod 6. A mounting ring 7 is provided on the top of the retaining cylinder 31, and one side of the connecting plate 8 is fixedly connected to the inner wall of the mounting ring 7. Screws 9 are fixedly connected to both sides of the top of the retaining cylinder 31. The mounting ring 7 is slidably sleeved on the screw 9, and a nut 10 is threadedly sleeved on the outer side of the screw 9 to facilitate the staff to disassemble and assemble the guide block 37.

[0031] A retaining ring for blocking the connecting tube 2 is fixedly provided at the bottom of the outer side of the grouting pipe 1. The connecting tube 2 is threadedly connected to the grouting pipe 1. After the connecting tube 2 is screwed to a certain extent, the second opening opened on the outer side of the retaining tube 31 is just in a staggered state with the first opening.

[0032] A first sealing gasket 4 is fixedly connected to the top of the connecting tube 2, a second sealing gasket 5 is fixedly connected to the bottom of the connecting tube 2, an annular groove is opened at the bottom end of the grouting pipe 1, and the second sealing gasket 5 is located in the annular groove to increase the sealing between the connecting tube 2 and the grouting pipe 1.

[0033] The implementation principle of the embodiment of the present application is as follows: before grouting, the staff twists the connecting tube 2 so that the connecting tube 2 is tightly sleeved on the outer side of the grouting pipe 1 until the first sealing gasket 4 contacts with the retaining ring, and the connecting tube 2 cannot rise and move. At this time, the second opening opened on the outer side of the retaining tube 31 is in a closed state with the first opening opened on the outer side of the grouting pipe 1, ensuring that the grouting pipe 1 will not be affected by impurities in the pile hole during the process of sinking the steel cage, and the first opening is always effectively closed, effectively preventing impurities from entering the interior of the grouting pipe 1 and causing blockage; when the pile is in place After that, the external slurry is injected into the grouting pipe 1, and the slurry flows into the retaining cylinder 31 along the grouting pipe. At this time, the retaining cylinder 31 is subjected to the pressure from the slurry, so that the slide bar 34 and the slide plate 35 move downward to squeeze the spring 36, so that the second opening coincides with the first opening, and the slurry can be discharged along the second opening and the first opening. Since the size of the top of the guide block 37 is smaller than the size of its bottom, the slurry can quickly flow along the guide block 37 to the second opening, which is beneficial to prevent the residual slurry in the retaining cylinder 31, thereby reducing the waste of slurry and saving construction costs.

[0034] The above contents are only used to illustrate the technical solution of the utility model, rather than to limit the protection scope of the utility model. Simple modifications or equivalent substitutions of the technical solution of the utility model by ordinary technicians in this field do not deviate from the essence and scope of the technical solution of the utility model.

Claims

1. A highway construction pre-grouting construction structure, comprising a grouting pipe (1), characterized in that: The outer surface of the grouting pipe (1) is provided with a plurality of first openings for discharging grouting liquid, the bottom end of the grouting pipe (1) is provided with a connecting tube (2) for enabling the grouting liquid to be discharged through the first openings, and the top of the connecting tube (2) is provided with a shielding mechanism (3) for preventing external foreign matter from entering the grouting pipe (1); The shielding mechanism (3) comprises a blocking cylinder (31) located in the grouting pipe (1); a plurality of second openings for discharging slurry are provided through the outer surface of the blocking cylinder (31); the first openings and the second openings are arranged in a staggered manner; a guide block (37) for quickly draining slurry to the second openings is provided inside the blocking cylinder (31); and the blocking cylinder (31) is elastically connected to the connecting cylinder (2).

2. The highway construction pre-grouting construction structure according to claim 1, characterized in that: The bottom of the retaining cylinder (31) is fixedly connected to a fixed cylinder (32), the top of the fixed cylinder (32) is fixedly connected to a top cover (33), the top cover (33) is connected to a vertically movable slide rod (34), one end of the slide rod (34) is fixedly connected to a slide plate (35), the other end of the slide rod (34) is connected to the retaining cylinder (31), the bottom of the slide plate (35) is fixedly connected to a spring (36) for preventing the retaining cylinder (31) from moving downward at will, and the bottom end of the spring (36) is fixedly connected to the top of the inner wall of the fixed cylinder (32).

3. The highway construction pre-grouting construction structure according to claim 1, characterized in that: The cross section of the guide block (37) is in a conical shape, and the size of the top of the guide block (37) is smaller than the size of the bottom thereof, and the size of the bottom of the guide block (37) is equal to the size of the inner diameter of the retaining cylinder (31).

4. The highway construction pre-grouting construction structure according to claim 1, characterized in that: The connecting tube (2) is threadedly connected to the grouting pipe (1); the annular groove provided at the bottom end of the grouting pipe (1) is connected to the second sealing gasket (5) at the bottom of the inner wall of the connecting tube (2); the first sealing gasket (4) at the top of the connecting tube (2) is in contact with a retaining ring provided on the outer side of the grouting pipe (1) for blocking the connecting tube (2).

5. The highway construction pre-grouting construction structure according to claim 1, characterized in that: The top of the guide block (37) is fixedly connected to a support rod (6), the other end of the support rod (6) is fixedly sleeved with a connecting plate (8), the other end of the connecting plate (8) is fixedly connected to the inner wall of a mounting ring (7), and the mounting ring (7) is arranged on the top of the retaining cylinder (31) and connected via a screw rod (9) and a nut (10) fixing member.

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