Lower opening structure of grouting hole sleeve

Abstract

The utility model discloses a grouting hole casing pipe lower opening structure which comprises a grouting hole, a base plate is attached to the upper surface of the grouting hole, a square pipe is fixedly connected to the center of the upper surface of the base plate, supporting blocks are symmetrically and fixedly connected to the lower surface of the base plate, a round pipe is fixedly connected to the other ends of the supporting blocks, and the round pipe is located in the center of the lower surface of the base plate. The outer wall of the circular pipe is attached to the inner wall of the grouting hole. Limiting structures are further arranged on the two sides of the square pipe, a sleeve can be clamped, a plurality of rubber strips are connected into a circular groove block in a glued mode to increase friction force, clamping of the sleeve can be more stable, meanwhile, stretching and retracting of a hydraulic cylinder can be controlled, the sleeve continues to slide downwards, and the situation that the grouting effect and quality are affected due to displacement in the grouting process is avoided; accurate control and clamping are conducted, it can be guaranteed that the casing pipe is firm and stable in the grouting process, and the problem of displacement is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to grouting hole casing lower mouth technical field, and the specific field is a grouting hole casing lower mouth structure. BACKGROUND

[0002] Ground pre-grouting is a common underground engineering foundation reinforcement technology, by drilling in the ground, grouting material is injected into the stratum, to achieve the purpose of reinforcing foundation, improving foundation bearing capacity, preventing foundation settlement, etc. Grouting hole is a very important construction element in ground pre-grouting, its design and construction need to be combined with the specific requirements of the project. Reasonable grouting hole arrangement and depth can ensure that the grouting material can effectively penetrate into the stratum, and achieve the best reinforcement effect. When the casing needs to be lowered into the grouting hole, displacement during grouting should be avoided, which affects the effect and quality of grouting. It is also necessary to ensure the firmness and stability of the casing to avoid affecting the construction progress and safety, increasing the construction difficulty and risk. Therefore, we propose a grouting hole casing lower mouth structure to ensure that the position of the casing meets the grouting requirements. SUMMARY

[0003] The utility model discloses a grouting hole casing lower mouth structure, which solves the problems in the background art.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a grouting hole casing lower mouth structure, comprising a grouting hole, the upper surface of the grouting hole is attached with a base plate, the upper surface center of the base plate is fixedly connected with a square tube, the lower surface of the base plate is fixedly connected with a support block, the other end of the support block is fixedly connected with a circular tube, and the circular tube is located at the lower surface center of the base plate, and the outer wall of the circular tube is attached with the inner wall of the grouting hole.

[0005] Preferably, it further comprises a limiting structure, which is fixedly connected to the upper surface of the base plate on both sides, and the inner side of the limiting structure is sleeved with the two sides of the square tube.

[0006] Preferably, the limiting structure comprises a side plate, the number of the side plate is two, and it is horizontally symmetrically arranged, the lower surface of the side plate is fixedly connected with the upper surface of the base plate, the side wall of the side plate is fixedly connected with a hydraulic cylinder, the other end of the hydraulic cylinder is fixedly connected with a push plate, the other side of the push plate is fixedly connected with an inner rod, the outer wall of the inner rod is sleeved with the side wall of the square tube, and it is gap fit, the other end of the inner rod is fixedly connected with a circular groove block, and the inner side of the circular groove block is provided with a semicircular groove.

[0007] Preferably, the outer wall of the circular groove block is fixedly connected with a support, the inner side of the support is rotatably connected with a rotating roller, and the side wall of the rotating roller is attached with the inner wall of the square tube.

[0008] Preferably, the inner wall of the round groove block is glued with rubber strips.

[0009] Compared with the prior art, the utility model has the advantages that when the lower opening of the grouting hole is worked, the base plate is arranged at the lower opening of the grouting hole, meanwhile the bottom round pipe is inserted into the grouting hole to keep stable, the limiting structure is arranged on the both sides of the square pipe, can clamp the casing pipe, the inside of the round groove block is glued with multiple rubber strips to increase the friction, can make the clamping of the casing pipe more stable, meanwhile can control the extension and contraction of the hydraulic cylinder, make the casing pipe continue to slide down, avoid the displacement in the grouting process, influence the effect and quality of grouting, carry out accurate control and clamping, can ensure the firm and stable of the casing pipe in the grouting process, avoid the problem of displacement. BRIEF DESCRIPTION OF DRAWINGS

[0010] Figure 1 It is the structural schematic diagram of the utility model;

[0011] Figure 2 It is Figure 1 The side detail view of the square pipe;

[0012] In the drawing: 1, grouting hole; 2, base plate; 3, square pipe; 4, support block; 5, round pipe; 6, limiting structure; 61, side plate; 62, hydraulic cylinder; 63, push plate; 64, inner rod; 65, round groove block; 7, support; 8, rotating roller; 9, rubber strip. DETAILED DESCRIPTION

[0013] The technical scheme in the embodiments of the utility model will be apparently and completely described in combination with the drawings in the embodiments of the utility model, and obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without making creative labor belong to the range of protection of the utility model.

[0014] Please refer to Figures 1-2 The utility model provides a kind of grouting hole casing pipe lower opening structure, including grouting hole 1, the upper surface of grouting hole 1 is attached with base plate 2, the upper surface center of base plate 2 is fixedly connected with square pipe 3, the lower surface of base plate 2 is fixedly connected with support block 4 symmetrically, another end of support block 4 is fixedly connected with round pipe 5, and round pipe 5 is located at the lower surface center of base plate 2, the outer wall of round pipe 5 is attached with the inner wall of grouting hole 1.

[0015] It further includes limiting structure 6, limiting structure 6 is fixedly connected on the both sides of the upper surface of base plate 2, and the inner side of limiting structure 6 is sleeved with the both sides of square pipe 3.

[0016] The limiting structure 6 comprises side plates 61, the number of the side plates 61 is two, and the side plates 61 are horizontally symmetrically arranged, the lower surface of the side plate 61 is fixedly connected with the upper surface of the base plate 2, the side wall of the side plate 61 is fixedly connected with a hydraulic cylinder 62, the other end of the hydraulic cylinder 62 is fixedly connected with a push plate 63, the other side of the push plate 63 is fixedly connected with an inner rod 64, the outer wall of the inner rod 64 is sleeved with the side wall of the square tube 3 in a clearance fit, the other end of the inner rod 64 is fixedly connected with a circular groove block 65, and the inner side of the circular groove block 65 is provided with a semicircular groove.

[0017] The outer side wall of the circular groove block 65 is fixedly connected with a support 7, the inner side of the support 7 is rotatably connected with a rotating roller 8, and the side wall of the rotating roller 8 is attached to the inner wall of the square tube 3.

[0018] The inner wall of the circular groove block 65 is glued with a rubber strip 9.

[0019] Working principle: when the lower opening of the grouting hole 1 is worked, the lower opening is previously formed outside the grouting hole 1, the lower opening can be processed into a hole with a larger outer diameter, so as to facilitate the drilling of the lower part and the passing of the casing, then the base plate 2 is placed directly above the lower opening of the grouting hole 3, at the same time, the circular tube 5 is inserted into the grouting hole 1, the circular tube 5 is fixed at the bottom of the base plate 2 through the support block 4, and the square tube 3 is arranged at the top, then the casing is lowered to the center of the square tube 3, and the casing penetrates the circular tube 5 and is placed in the grouting hole 1, during the process of lowering the pipe, the limiting structure 6 can be used for limiting and clamping, the limiting structure 6 is symmetrically arranged in the inner part of the square tube 3, the limiting structure 6 is fixed on both sides of the base plate 2 through the side plate 61, and the inner side of the two side plates 61 is further provided with the hydraulic cylinder 62, the hydraulic cylinder 62 pushes the push plate 63 inward, the inner rod 64 is symmetrically arranged on the surface of the push plate 63 and slides on the side plate of the square tube 3, the symmetrically arranged inner rod 64 makes the sliding of the whole more stable, the casing is clamped through the circular groove block 65, a plurality of rubber strips 9 are glued in the inner part of the circular groove block 65 to increase the friction, the clamping of the casing is more stable, and the extension of the hydraulic cylinder 62 can be controlled to make the casing continue to slide downward, the rotating roller 8 is further arranged outside the circular groove block 65 when the circular groove block 65 slides, the rotating roller 8 can rotate in the support 7, and the support 7 is fixed on both sides of the circular groove block 65, so that the circular groove block 65 moves more stably.

[0020] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A structure of a lower opening of a grouting hole casing, characterized by: The utility model provides a grouting hole (1), the upper surface of grouting hole (1) is pasted with base plate (2), the upper surface center of base plate (2) is fixedly connected with square tube (3), the lower surface of base plate (2) is fixedly connected with support block (4) symmetrically, the other end of support block (4) is fixedly connected with round pipe (5), and round pipe (5) is located the lower surface center of base plate (2), and the outer wall of round pipe (5) is pasted with the inner wall of grouting hole (1).

2. The lower port structure of the grouting hole casing pipe according to claim 1, characterized in that: Still include limiting structure (6), limiting structure (6) fixedly connected on the both sides of the upper surface of base plate (2), and the inner side of limiting structure (6) is connected with the both sides of square tube (3) with sleeve.

3. The lower port structure of the grouting hole casing pipe according to claim 2, characterized in that: The limiting structure (6) includes a side plate (61), the number of side plate (61) is two, and is horizontally symmetrical, the lower surface of side plate (61) is fixedly connected with the upper surface of base plate (2), the side wall of side plate (61) is fixedly connected with hydraulic cylinder (62), the other end of hydraulic cylinder (62) is fixedly connected with push plate (63), the other side of push plate (63) is fixedly connected with inner rod (64) symmetrically, the outer wall of inner rod (64) is connected with the side wall of square tube (3) with sleeve, and is clearance fit, the other end of inner rod (64) is fixedly connected with round groove block (65), the inner side of round groove block (65) is provided with semicircular groove.

4. The lower port structure of the grouting hole casing pipe according to claim 3, characterized in that: The outer side wall of the round groove block (65) is fixedly connected with the bracket (7), the inner side of the bracket (7) is rotatably connected with the rotating roller (8), and the side wall of the rotating roller (8) is fitted with the inner wall of the square tube (3).

5. The structure of the lower port of the grouting hole casing pipe according to claim 3, characterized in that: The inner wall of the round groove block (65) is glued with the rubber strip (9).

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