CN212358292U - Compaction pile for eliminating upper pulling friction resistance - Google Patents

Abstract

The utility model discloses an eliminate crowded close stake of pull-up frictional resistance belongs to ground processing technology field. This compaction stake includes: the device comprises a fixed block, a pile pipe, a conical head and an expanding ring; the fixed block is arranged at the top of the pile tube; the conical head is arranged at the bottom of the pile pipe, and a wing protrusion is arranged on the conical head; the expanding ring is placed on the conical head and positioned between the bottom of the pile pipe and the wing protrusion. The utility model discloses in set up ring expansion and wing suddenly, when the pile is driven, in will ring expansion and stake pipe together beat into soil, the ring expansion has increased the diameter of drilling, when pulling out compaction stake, the ring expansion can hang on the wing is suddenly for whole compaction stake all not with the pore wall contact, thereby eliminated frictional force, feasible pulling out compaction stake lighter, and strengthened tube drawing speed, practiced thrift the time.

Description

Compaction pile for eliminating upper pulling friction resistance

Technical Field

The utility model relates to a ground treatment technical field, in particular to crowded close stake of resistance that pulls out on eliminating.

Background

The compaction pile is formed by pressing or driving a steel pipe with a pipe plug, a valve or a conical head into an underground compaction soil layer to form a hole, and then throwing fillers such as lime soil, gravel and the like into the hole. The compaction pile composite foundation can effectively eliminate the collapsibility of the large-thickness loess in the collapsibility loess foundation treatment.

After the compaction pile in the prior art is drilled, the formed aperture is the same as the diameter of the compaction pile, the pile wall can be in complete contact with the hole wall, the viscosity of soil is high, and when the compaction pile is pulled out, the soil is too much, the friction force is too large, so that the pile tube is difficult to take out.

SUMMERY OF THE UTILITY MODEL

In order to make the pile more easily pulled out, the utility model provides a pile capable of eliminating the pull-up friction resistance. The compaction pile comprises: the device comprises a fixed block, a pile pipe, a conical head and an expanding ring; the fixing block is arranged at the top of the pile tube; the conical head is arranged at the bottom of the pile pipe, and a wing protrusion is arranged on the conical head; the expanding ring is placed on the conical head and positioned between the bottom of the pile pipe and the wing protrusion.

Furthermore, the upper part of the expanding ring is large and the lower part of the expanding ring is small, and the expanding ring has a gradient of 30-60 degrees.

Further, the lower end of the wing protrusion has a gradient of 45-60 degrees.

Further, the conical head is in threaded connection with the bottom of the pile pipe.

The utility model provides a technical scheme's beneficial effect is: the utility model discloses in set up ring expansion and wing suddenly, when the pile is driven, in will ring expansion and stake pipe together beat into soil, the ring expansion has increased the diameter of drilling, when pulling out compaction stake, the ring expansion can hang on the wing is suddenly for whole compaction stake all not with the pore wall contact, thereby eliminated frictional force, feasible pulling out compaction stake lighter, and strengthened tube drawing speed, practiced thrift the time. Additionally, the utility model discloses simple structure, it is easy and simple to handle, the security performance is high.

Drawings

FIG. 1 is a schematic structural view of a compaction pile for eliminating upper pulling friction resistance provided by the present invention;

fig. 2 is a schematic structural view of an expanding ring provided by the present invention;

fig. 3 is a schematic diagram of the piling and pile pulling states of the compaction pile for eliminating the upper pulling friction resistance provided by the utility model.

Reference numerals: 1-fixing block; 2-pile pipe; 3-conical head; 4-ring expansion; 5-pteroid process.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.

It will be understood that when an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. When a component is referred to as being "disposed on" another component, it can be directly on the other component or intervening components may also be present.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

FIG. 1 is a schematic structural view of a compaction pile for eliminating upper pulling friction resistance provided by the present invention; fig. 2 is a schematic structural view of an expanding ring provided by the present invention; fig. 3 is a schematic diagram of the piling and pile pulling states of the compaction pile for eliminating the upper pulling friction resistance provided by the utility model. Referring to fig. 1-3, the compaction pile includes: the device comprises a fixed block 1, a pile pipe 2, a conical head 3 and an expanding ring 4; the fixed block 1 is arranged at the top of the pile tube 2; the conical head 3 is arranged at the bottom of the pile pipe 2, and a wing protrusion 5 is arranged on the conical head 3; the expanding ring 4 is placed on the conical head 3 and is positioned between the bottom of the pile pipe 2 and the wing protrusion 5.

The fixed block 1 is used for bearing the pressure applied by the pile driver; the top end of the conical head 3 is pointed, and under the condition of certain pressure, the conical head is drilled into soil so as to drive the pile pipe 2 into the soil; the expanding ring 4 is used for expanding the diameter of the required drilling hole, and the wing protrusions 5 are used for blocking the expanding ring 4 and preventing the expanding ring 4 from falling off the conical head 3.

In the prior art, the compacted pile is driven into the soil by the pile driver, and when the compacted pile is pulled out, the surface of the pile tube is tightly attached to the hole wall because the hole diameter is the same as the diameter of the pile tube, so that the compaction of the pile is difficult. Therefore, the utility model discloses in, set up ring expansion 4 and wing suddenly 5, place ring expansion 4 in conical head 3 department, exert pressure for fixed block 1 through the pile driver, with conical head 3 in boring into soil to in driving ring expansion 4 and entering into soil, increased the diameter of drilling, avoided the contact of 2 surfaces of stake pipe and pore wall, ring expansion 4 can hang on wing suddenly 5 when pile pulling pipe 2, whole crowded close stake all not with the pore wall contact, frictional force has been eliminated, thereby it is more light when pulling crowded close stake.

It should be further noted that the maximum diameter of the conical head 3 is smaller than the diameter of the pile tube 2, the inner diameter of the ring expander 4 is smaller than the diameter of the pile tube 2 and larger than the maximum diameter of the conical head 3, and the width of the wing protrusion 5 plus the diameter of the conical head 3 at the connection with the wing protrusion 5 is larger than the inner diameter of the ring expander 4, limited by the pile tube 2 and the wing protrusion 5, the ring expander 4 can move between the bottom of the pile tube 2 and the wing protrusion 5, so that the ring expander 4 can be supported at the bottom of the pile tube 2 to expand the diameter of the drilled hole when driving the pile, and the ring expander 4 inclines and hangs on the wing protrusion 5 when pulling the pile tube 2, so that the wing protrusion 5 and the pile tube 2 are not in contact with the hole wall, friction force is eliminated, and the pile tube 2 is pulled out more easily.

Furthermore, the expanding ring 4 has a large upper part and a small lower part and has a gradient of 30-60 degrees. It should be noted that, the expanding ring 4 is set to be large in top and small in bottom, and a slope with a certain angle exists, so that the expanding ring 4 can more easily enter the soil when piling is performed, and the compaction pile is more labor-saving to use.

Further, the lower end of the wing protrusion 5 has a gradient of 45 to 60 degrees. It should be noted that, the wing-shaped protrusion 5 is also set to be large in top and small in bottom, so that the pressure can be increased during pile driving, the wing-shaped protrusion 5 can enter the soil more easily, the upper end of the wing-shaped protrusion 5 can hang the ring-shaped extension 4, and the ring-shaped extension 4 is prevented from falling.

Further, the conical head 3 is in threaded connection with the bottom of the pile tube 2. It should be noted that, in actual work, different places or environments can use different conical heads 3, and set up conical head 3 and pile pipe 2 bottom as threaded connection, can be according to the operating condition of difference, select the kind of conical head 3 to can be suitable for different operating environment. And the conical head 3 can be detached from the bottom of the pile pipe 2, so that the ring expander 4 can be taken and placed more conveniently.

The utility model discloses a complete work flow can be: cleaning and leveling the site, measuring the specific pile position by using a measuring tool such as a GPS or a total station, and driving a positioning pile, positioning a pile driver in place and starting to squeeze and form a hole on the premise of checking the pile position error. Utilize hydraulic pile driver hammering fixed block 1, low hammer is earlier flicked or low is carried heavily and is beaten, conical head 3 begins to go into the soil, slowly wing suddenly 5 also goes into the soil, expand ring 4 top in the bottom of stake pipe 2, also go into the soil through the hammering of pile driver, after 1 ~ 2m and all aspects are normal in stake pipe 2 sinks into the soil, reuse predetermined speed, fall apart from, hammer fixed block 1 to design depth and simultaneously hammer the crowded pile around the soil body, crowded pile sinks behind the design depth, need in time extract crowded stake, when extracting crowded stake, expand ring 4 hangs on wing suddenly 5, stake pipe 2 and expand ring 4 can not hug closely the pore wall, thereby eliminate the frictional force when extracting crowded stake. Filling the required materials into the holes after tube drawing.

It is worth explaining, the utility model discloses in set up ring expansion and wing suddenly, when the pile is driven, will expand in ring and stake pipe together are beaten into soil, the ring expansion has increased the diameter of drilling, when pulling out the compaction stake, the ring expansion can hang on the wing is suddenly for whole compaction stake all not with the pore wall contact, thereby eliminated frictional force, feasible pulling out the compaction stake lighter, and strengthened tube drawing speed, practiced thrift the time. Additionally, the utility model discloses simple structure, it is easy and simple to handle, the security performance is high.

The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.

Claims (4)

1. An compaction pile for eliminating upper pulling frictional resistance, comprising: the device comprises a fixed block (1), a pile pipe (2), a conical head (3) and an expanding ring (4); the fixed block (1) is arranged at the top of the pile tube (2); the conical head (3) is arranged at the bottom of the pile tube (2), and a wing protrusion (5) is arranged on the conical head (3); the expanding ring (4) is placed on the conical head (3) and is positioned between the bottom of the pile pipe (2) and the wing protrusion (5).

2. The compaction pile for eliminating the upper pulling frictional resistance according to claim 1, wherein the expanding ring (4) is large at the upper part and small at the lower part and has a gradient of 30-60 degrees.

3. The compaction pile for eliminating the upper pulling frictional resistance according to claim 1, wherein the lower end of the wing protrusion (5) has a slope of 45-60 °.

4. The compaction pile for eliminating the upper pulling frictional resistance according to claim 1, wherein the conical head (3) is in threaded connection with the bottom of the pile tube (2).

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