Stirring rod for cement mixing pile construction

Abstract

The utility model discloses a stirring rod for cement mixing pile construction, which comprises a stirring part used for stirring a soil layer and a screw-in drilling part used for penetrating the stirring part into the soil layer for stirring, the screw-in drilling part and the stirring part are coaxially and integrally formed, a stirring blade is arranged on the stirring part, a first through hole is formed in the stirring part, and a second through hole is formed in the stirring part. A first through hole is formed in the middle of the stirring blade, a second through hole is formed in the middle of the stirring blade, the first through hole is communicated with the second through hole after the stirring blade is connected with the stirring part, the stirring blade is provided with at least one liquid outlet communicated with the second through hole, and a connecting part used for being connected with an external liquid pipe is arranged at an opening of the first through hole. The liquid outlet is provided with a protection piece used for preventing the liquid outlet from being blocked by soil. The stirring part has a liquid outlet function, can cool the equipment during drilling, can spray liquid, is suitable for hard soil, and is simple in structure.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of mixing pile manufacturing, in particular to a mixing rod for cement-soil mixing pile construction. BACKGROUND

[0002] The cement-soil mixing pile needs to drill a pile hole in the soil through a pile machine drill rod during construction, at the same time, the parts on the drill rod also scatter and mix the surrounding soil and spray cement slurry, after the drill bit reaches the designed depth, continuously spray and mix the soil in situ, and finally wait for the pile body to be formed, the existing mixing rod for construction of the cement-soil mixing pile has a rod body, a drill bit and a mixing blade are arranged on the rod body, the mixing blade rotates with the drill bit and stirs the surrounding soil, but the hardness of the soil in different geological environments is different, the existing mixing rod is easy to be damaged when stirring the hard soil, the friction generated by stirring easily causes the surface temperature of the mixing rod to rise and damages the mixing equipment, and the hard soil is easy to be stirred unevenly, which affects the structural strength. SUMMARY

[0003] In view of the deficiencies in the prior art, the utility model aims at providing a mixing rod for cement-soil mixing pile construction to solve the problems of uneven stirring, surface friction, easy damage to the rod body and unsuitability for hard soil in the mixing rod for cement-soil mixing pile construction in the background art.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a mixing rod for cement-soil mixing pile construction, comprising a mixing part for stirring the soil layer and a rotary drilling part for deepening the mixing part into the soil layer, the rotary drilling part is coaxially and integrally formed with the mixing part, the mixing part is provided with a mixing blade, the mixing part is provided with a first through hole, the mixing blade is provided with a second through hole, the first through hole and the second through hole are communicated after the mixing blade is connected with the mixing part, the mixing blade is provided with at least one liquid outlet communicated with the second through hole, the first through hole is provided with a connecting part connected with an external liquid pipe, and the liquid outlet is provided with a protective piece preventing the liquid outlet from being blocked by the soil.

[0005] As a further improvement of the utility model, the protective piece comprises a hemispherical mesh cover, the hemispherical mesh cover is clamped with the inner circumferential wall of the liquid outlet, and the hemispherical mesh cover is protruded from the liquid outlet to the direction of the second through hole.

[0006] As a further improvement of the utility model, the mixing part is vertically arranged with the ground, the mixing blade is obliquely arranged with the ground, and the lower end surface of the mixing blade is provided with a plurality of mixing guide blades for cutting the soil layer into a blade path.

[0007] As a further improvement of the present application, the stirring guide blade is inclinedly arranged with a guide surface at one end in the rotating direction of the stirring part.

[0008] As a further improvement of the present application, the connecting part comprises a sealing rubber gasket arranged along the inner wall in the circumferential direction at the opening of the first through hole for forming a seal after interference fit with the external liquid pipe.

[0009] As a further improvement of the present application, the spiral drilling part is provided with a third through hole, one end of which is in communication with one end of the drill bit of the spiral drilling part, and the other end is in communication with the first through hole.

[0010] As a further improvement of the present application, the spiral drilling part is provided with a spiral screw blade, which has a blade part for cutting and slicing the soil layer.

[0011] Compared with the prior art, the present application provides a stirring rod for cement-soil mixing pile construction, which has the following beneficial effects: the structure of the present application can make the stirring rod spray slurry during stirring, realize the integration of stirring and spraying, improve the height of mixing of slurry in soil, save construction time, increase the strength of the pile body, and the anti-blocking structure of the liquid outlet can make the liquid outlet normally discharge liquid without affecting the work efficiency, the connecting part provided with the first through hole can make the connection of the external liquid pipe and the first through hole more convenient, the sprayed slurry can soften the soil with hard texture to make it fluffy, and the stirring rod can be applied to different texture of soil and is easy to operate. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 It is a perspective view of the present application;

[0013] Figure 2 It is a partial sectional view of the present application;

[0014] Figure 3 It is a drawing of the present application Figure 1 It is an enlarged view of part A;

[0015] Figure 4 It is a partial sectional view of the stirring blade of the present application.

[0016] Reference signs: 1, stirring part; 2, spiral drilling part; 3, sealing rubber gasket; 4, half-sphere mesh cover; 12, stirring blade; 13, first through hole; 121, second through hole; 122, liquid outlet; 123, guide surface; 21, third through hole; 22, spiral screw blade; 23, blade part; DETAILED DESCRIPTION

[0017] As shown in the figure, to achieve the above-mentioned objective, this utility model provides a mixing rod for cement-soil mixing pile construction, including a mixing part 1 for mixing soil layers and a rotary drilling part 2 for inserting the mixing part 1 into the soil layer for mixing. The rotary drilling part 2 is coaxially and integrally formed with the mixing part 1. The mixing part 1 is provided with a mixing blade 12. The mixing part 1 has a first through hole 13. The mixing blade 12 has a second through hole 121 in the middle. After the mixing blade 12 is connected to the mixing part 1, the first through hole 13 communicates with the second through hole 121. The mixing blade 12 is provided with at least one liquid outlet 122 communicating with the second through hole 121. The opening of the first through hole 13 is provided with a connecting part for connecting with an external liquid pipe. The liquid outlet 122 is provided with a protective component to prevent the liquid outlet 122 from being blocked by soil.

[0018] In implementing this solution, those skilled in the art first place the rotary drilling part 2 at the location where the mixing pile needs to be constructed, and start the equipment so that the rotary drilling part 2 can open a channel for the mixing part 1 to penetrate deep into the soil, so that the mixing part 1 can penetrate deep into the soil for mixing. This solution uses a mixing blade 12 in the mixing part 1. Compared with the prior art, the mixing blade 12 can easily cut hard soil through its blade 23. At the same time, this solution also uses a liquid outlet 122 on the mixing blade 12. When the mixing blade 12 mixes the surrounding soil, the liquid outlet 122 can spray liquid. This liquid can be water or a slurry that facilitates pile formation. This solution prefers to spray water so that the surrounding soil softens when it comes into contact with water, making it looser and easier to cut by the mixing blade 12, which facilitates mixing. Those skilled in the art can first connect the first through hole 13 of the mixing part 1 with the second through hole 121 in the middle of the mixing blade 12. There is also an outlet 122 connected to the second through hole 121; the external liquid pipe is connected to the mixing rod through the connection part at the opening of the first through hole 13 to transport cement slurry and other slurries in; during construction, the mixing blade 12 mixes the soil layer, and the slurry is sprayed out from the outlet 122 simultaneously, realizing the integration of mixing and spraying; the slurry spraying in this scheme requires pressure to spray out, so the external liquid pipe preferred in this scheme is a liquid pipe with high-pressure spraying properties, which not only saves construction time and avoids waiting and adjustment in step-by-step operation, but also makes the slurry highly mixed with the soil, enhances the strength of the pile body, and can also avoid the overheating reaction caused by friction of the mixing blade 12 during mixing; the connection part adopts a common connection structure to ensure a firm connection and good sealing, which makes it convenient for operators to quickly connect the external liquid pipe and prevent slurry leakage and waste; the protective part of the outlet 122 can prevent it from being blocked by the soil, ensure smooth liquid discharge, maintain the continuity of mixing and spraying work, and also reduce the maintenance cost of the equipment.

[0019] The protection piece includes a hemispherical mesh cover 4, the outer peripheral wall of the hemispherical mesh cover 4 is clamped with the inner peripheral wall of the liquid outlet 122, and the hemispherical mesh cover 4 is protruded from the liquid outlet 122 to the direction of the second through hole 121.

[0020] The hemispherical mesh cover 4 is arranged, so that the material is less, the manufacturing cost is lower, in use, the person skilled in the art clamps the hemispherical mesh cover 4 corresponding to each liquid outlet 122, the preferred embodiment of the present application is that one liquid outlet 122 corresponds to clamp one hemispherical mesh cover 4, the clamping mode is more convenient to disassemble and assemble, and it is convenient to replace, even if the mesh cover is blocked by a large amount of soil, the person skilled in the art only needs to replace the hemispherical mesh cover 4 without replacing the whole stirring rod, so that the cost is saved, and the protruding direction of the hemispherical mesh cover 4 can prevent the external soil from being easily attached to the arc wall of the outer convex arc, thereby reducing the probability of blockage.

[0021] The stirring part 1 is vertically arranged with the ground, the stirring blade 12 is obliquely arranged with the ground, and the lower end surface of the stirring blade 12 is provided with a plurality of stirring guide blades for cutting blade tracks in the soil layer.

[0022] The stirring blade 12 is obliquely arranged with the ground, and the lower end surface of the stirring blade 12 is provided with a plurality of stirring guide blades; when the stirring rod starts to work, the rotating drilling part 2 drives the stirring part 1 to rotate, and the obliquely arranged stirring blade 12 fully contacts the soil layer in the rotating process. At this time, the stirring guide blades play a role, they cut blade tracks in the soil layer along with the rotation of the stirring blade 12, the stirring part 1 is vertically arranged with the ground, which ensures that the stirring rod can accurately penetrate into the soil layer in the vertical direction during construction, so that the cement-soil mixing pile can be vertically formed according to the design requirements, and the building structure can be stably supported during subsequent construction of the building, so that the overall stability is better and the strength is higher.

[0023] The end of the stirring guide blade in the rotating direction of the stirring part 1 is obliquely provided with a guide surface 123.

[0024] The guide surface 123 is arranged on the stirring blade 12, and when the stirring blade 12 rotates to stir the soil, the guide surface 123 can contact the soil and guide the stirring blade 12, so as to avoid the stirring blade 12 from colliding with the soil with hard texture and deviating.

[0025] The connecting part includes a sealing rubber pad 3 arranged along the inner wall in the circumferential direction corresponding to the opening of the first through hole 13, and used for forming a seal after interference fit with an external liquid pipe.

[0026] In the implementation of the scheme, the sealing rubber 3 is arranged at the opening of the first through hole 13 by the person skilled in the art, and when the external liquid pipe is inserted into the opening of the first through hole 13, the sealing rubber 3 is pressed, and a seal is formed between the sealing rubber 3 and the external liquid pipe, so that liquid leakage from the opening of the first through hole 13 is avoided, and the water output pressure is not affected.

[0027] The screwing drilling part 2 is provided with a third through hole 21, one end of the third through hole 21 communicates with one end of the drill bit of the screwing drilling part 2, and the other end communicates with the first through hole 13.

[0028] In the implementation of the scheme, the third through hole 21 is arranged, and when grouting or water injection is performed, the third through hole 21 can guide the slurry or water to flow out from one end of the drill bit of the screwing drilling part 2, so that the drill bit is prevented from being damaged due to overheating, and the pile body has higher integrity and higher overall strength.

[0029] The screwing drilling part 2 is provided with a screwing spiral blade 22, and the screwing spiral blade 22 has a blade part 23 for cutting the soil layer.

[0030] In the implementation of the scheme, the screwing spiral blade 22 is arranged on the screwing drilling part 2, the screwing spiral blade 22 is in rotating contact with the soil and cuts the soil, and the blade part 23 can more easily cut the soil with hard texture, and the structure is simple and the cutting effect is good.

[0031] The above only describes preferred embodiments of the present application, and the protection scope of the present application is not limited to the above embodiments. Any technical solution falling within the concept of the present application belongs to the protection scope of the present application. It should be noted that for ordinary skilled persons in the technical field, some improvements and decorations without departing from the principles of the present application are also considered as the protection scope of the present application.

Claims

1. A mixing rod for cement-soil mixing pile construction, characterized by, The utility model provides a soil layer stirring device, including the stirring part for stirring soil layer and the screwing drill part for the stirring of soil layer stirring part, the screwing drill part is integrally formed with stirring part coaxial arrangement, the stirring part is equipped with stirring blade, the stirring part is equipped with first through -hole, the stirring blade middle part is equipped with second through -hole, the first through -hole is communicated with second through -hole after the stirring blade is connected with stirring part, the stirring blade is equipped with at least one liquid outlet with second through -hole communication, the first through -hole opening is equipped with the connecting portion for connecting with outside liquid pipe, the liquid outlet is equipped with the protection member for avoiding the liquid outlet being blocked by soil.

2. The mixing rod for cement-soil mixing pile construction according to claim 1, characterized in that, The protection member includes a hemispherical mesh cover, and the hemispherical mesh cover is clamped to the inner circumferential wall of the liquid outlet.

3. The mixing rod for cement-soil mixing pile construction according to claim 1, characterized in that, The stirring part is vertically arranged with the ground, the stirring blade is obliquely arranged with the ground, and the lower end surface of the stirring blade is provided with a plurality of stirring guide blades for cutting a blade path in the soil layer.

4. The mixing rod for cement-soil mixing pile construction according to claim 3, characterized in that, The end of the stirring guide blade towards the rotating direction of the stirring part is obliquely provided with a guide surface.

5. The mixing rod for soil-cement mixing pile construction according to claim 1 or 2 or 3 or 4, characterized in that, The connecting portion includes a sealing rubber gasket arranged along the inner wall of the first through-hole in the circumferential direction for forming a seal after interference fit with the external liquid pipe.

6. The mixing rod for soil-cement mixing pile construction according to claim 1 or 2 or 3 or 4, characterized in that, The screwing drill part is provided with a third through-hole, one end of the third through-hole is communicated with one end of the drill bit of the screwing drill part, and the other end is communicated with the first through-hole.

7. The mixing rod for soil-cement mixing pile construction according to claim 1 or 2 or 3 or 4, characterized in that, The screwing drill part is provided with a screwing blade, and the screwing blade has a blade portion for cutting the soil layer.

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