CN221255464U - Pile feeding device for PHC pipe pile - Google Patents

Abstract

The utility model relates to a pile-feeding device for PHC pipe piles, which comprises an upper rod body, a lower rod body and a pile head, wherein the upper rod body and the lower rod body are hollow and are connected in a welded mode, the pile head is connected through a flaring head, the flaring head comprises a body with a large upper part and a small lower part, a spiral flaring plate is arranged on the body, the pile head is arranged on the flaring head through a screw, an annular sealing plate is arranged at the top of the upper rod body, and ventilation holes are uniformly distributed on the sealing plate. The utility model adopts the combination of the upper rod body and the lower rod body, increases the length of the pile driver to meet the requirement of overlength pile driving, and simultaneously, the sealing plate is provided with the air holes to form an air circulation channel, thereby eliminating the vacuum effect in the process of pulling out the pile driver; meanwhile, by adopting the structural design of the pile head and the flaring head, the accurate positioning of the pile head and the flaring plate on the flaring head can be guaranteed, the soil action of the upper rod body, the lower rod body and the hole can be effectively reduced, and the problem of pile feeding blockage caused by scattering of soil in the hole in the pile feeding process is solved.

Description

Pile feeding device for PHC pipe pile

Technical Field

The utility model relates to the technical field of constructional engineering, in particular to a pile delivery device for PHC pipe piles.

Background

PHC pipe pile is one of pile types commonly used in pile foundation construction, and the construction method mainly comprises hammering and static pressure, wherein the construction technology of pile sinking by adopting a hammering method is dominant in China. The hammering pile sinking method mainly uses the instantaneous impact mechanical energy when the pile hammer falls down to overcome the side wall friction resistance of pile body and the resistance of pile end soil layer, so that its static equilibrium state is destroyed, and the pile body is sunk, so that it can attain the new static equilibrium state, and the pile body can be sunk to the designed elevation by repeatedly hammering the jumping impact force produced by pile head and self-weight of pile body. The construction method has the advantages of high construction speed, high degree of mechanization, wide application range, short construction period, low cost, highest bearing capacity of single pile under the same soil layer geological condition and the like.

However, when the PHC precast tubular pile is constructed by adopting the hammering method, as the excavation depth of the foundation pit is larger and larger, the embedded elevation of the designed PHC pile top is deepened, and the requirements on PHC pile delivery devices are higher and higher.

When PHC pipe piles are adopted as pile foundations for crossing the water taking clear canal section drainage box culvert, pile tops of two bearing platforms in the middle are at the elevation of-8 m, and the elevation of the original ground is 3-4 m, so that the pile conveying depth reaches 11-12 m. According to the rule of DBJ61T 101-2015 'technical regulations of prestressed concrete pipe pile foundation', the pile-driving depth should be comprehensively determined according to factors such as the soil-entering length of the pile, the soil quality of the pile end soil and the soil around the pile, and the like, and the pile-driving depth should not exceed 6 m.

Thus, the PHC pipe pile construction has the problem of ultra-deep pile feeding.

Disclosure of utility model

The utility model provides a pile driver for PHC pipe piles, which aims to solve the problem that the pile driver cannot meet the design requirement due to insufficient pile driving depth of a common pile driver.

According to one aspect of the utility model, a pile driver for PHC pipe piles is provided, which comprises an upper rod body, a lower rod body and a pile head, wherein the upper rod body is hollow and connected with the lower rod body in a welding manner, the pile head is connected with the lower rod body through a flaring head, the flaring head comprises a body with a large upper part and a small lower part, a spiral flaring plate is arranged on the body, the pile head is arranged on the flaring head through a screw, an annular sealing plate is arranged at the top of the upper rod body, and ventilation holes are uniformly distributed on the sealing plate.

On the basis of the scheme, preferably, a reinforcing plate is arranged at the joint of the upper rod body and the lower rod body.

On the basis of the scheme, preferably, a lower rib plate is arranged between the body and the lower rod body.

On the basis of the scheme, preferably, an upper rib plate is arranged between the sealing plate and the upper rod body.

On the basis of the scheme, preferably, a plurality of lifting lugs which are distributed at intervals are arranged in the length direction of the upper rod body and the lower rod body.

On the basis of the scheme, preferably, the pile head comprises pile plates with trapezoid structures, and four pile plates are welded to form a conical crisscross body.

According to the pile-feeding device for the PHC pipe pile, the upper rod body is combined with the lower rod body, so that the length of the pile-feeding device is increased to meet the requirement of overlength pile-feeding, and meanwhile, the sealing plate is provided with the ventilation holes to form an air circulation channel, so that the vacuum effect in the process of pulling out the pile-feeding device is eliminated; the upper part of the pile body is provided with about 1/3 of the welded part with the reinforcing blocks, so that the strength of the sleeve of the pile feeder and the sealing plate is enhanced; meanwhile, by adopting the structural design of the pile head and the flaring head, the accurate positioning of the pile head and the flaring plate on the flaring head can be guaranteed, the soil action of the upper rod body, the lower rod body and the hole can be effectively reduced, and the problem of pile feeding blockage caused by scattering of soil in the hole in the pile feeding process is solved.

According to the pile conveying device for PHC pipe piles, the upper rod body and the lower rod body form the pile conveying channel, so that the pipe piles are conveyed, the eccentricity ratio can meet the standard requirement, the pipe piles can be directly conveyed to the designed elevation, pile cutting is not needed after excavation, and the material cost of the pipe piles is saved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed for the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art. In the drawings:

Fig. 1 is a schematic structural view of a pile driver for PHC piles according to the present utility model;

FIG. 2 is a side view of a pile driver for PHC piles of the present utility model;

FIG. 3 is a perspective view of the enlarged head of the present utility model;

FIG. 4 is a side view of the pile head and expanding head of the present utility model;

reference numerals illustrate:

the pile comprises an upper rod body 1, a sealing plate 11, an air vent 12, a lower rod body 2, a flaring head 3, a body 31, a flaring plate 32, a pile head 4, a pile plate 41, a reinforcing plate 5, a lower rib plate 51, an upper rib plate 52 and a lifting lug 6.

Detailed Description

The following describes in further detail the embodiments of the present utility model with reference to the drawings and examples. The following examples are illustrative of the utility model and are not intended to limit the scope of the utility model.

It should be understood that the terms "comprises" and/or "comprising," when used in this specification and the appended claims, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.

For the sake of simplicity of the drawing, the parts relevant to the present utility model are shown only schematically in the figures, which do not represent the actual structure thereof as a product. Additionally, in order to simplify the drawing for ease of understanding, components having the same structure or function in some of the drawings are shown schematically with only one of them, or only one of them is labeled. Herein, "a" means not only "only this one" but also "more than one" case.

It should be further understood that the term "and/or" as used in the present specification and the appended claims refers to any and all possible combinations of one or more of the associated listed items, and includes such combinations.

In the embodiment shown in the drawings, indications of orientation (such as up, down, left, right, front and rear) are used to explain the structure and movement of the various components of the utility model are not absolute but relative. These descriptions are appropriate when the components are in the positions shown in the drawings. If the description of the location of these components changes, then the indication of these directions changes accordingly.

In addition, in the description of the present application, the terms "first," "second," and the like are used merely to distinguish between descriptions and are not to be construed as indicating or implying relative importance.

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the following description will explain the specific embodiments of the present utility model with reference to the accompanying drawings. It is evident that the drawings in the following description are only examples of the utility model, from which other drawings and other embodiments can be obtained by a person skilled in the art without inventive effort.

Referring to fig. 1, and referring to fig. 2 and 3 in combination, the pile driving device for PHC piles of the present utility model includes an upper rod 1, a lower rod 2 and a pile head 4, wherein the upper rod 1 and the lower rod 2 are hollow and are welded to each other to extend the length thereof, thereby meeting the requirement of ultra-long depth pile driving.

The pile head 4 is connected with the lower rod body 2 through the flaring head 3, specifically, the flaring head 3 comprises a body 31 with a big top and a small bottom, a spiral flaring plate 32 is arranged on the body 31, the pile head 4 is arranged on the flaring head 3 through screws, an annular sealing plate 11 is arranged at the top of the upper rod body 1, and ventilation holes 1212 are uniformly distributed in the sealing plate 11, as shown in fig. 3 and 4.

When pile driving is carried out, the pile head 4 at the top can realize positioning to provide a stress reference, and in the penetrating process, the flaring plates 32 on the flaring heads 3 act on pile holes at two sides to apply acting force to soil at two sides so as to avoid acting with the upper rod body 1 or the lower rod body 2, and the pile driving is blocked. When the pile driver is withdrawn, the upper sealing plate 11 has a deeper depth, so that vacuum is easily formed in the rod body, the withdrawal of the pile driver is blocked, and the compressed air withdrawn from the pile driver can be permeated out through the air holes 1212 due to the action of the air holes 1212, so that an air circulation channel is formed, the vacuum effect is eliminated, and the quick and accurate withdrawal of the pile is ensured.

The connection part of the upper rod body 1 and the lower rod body 2 is provided with a reinforcing plate 5 to strengthen the connection effect, preferably, a lower rib plate 51 is arranged between the body 31 and the lower rod body 2, an upper rib plate 52 is arranged between the sealing plate 11 and the upper rod body 1, and a plurality of lifting lugs 6 are arranged at intervals in the length direction of the upper rod body 1 and the lower rod body 2.

As shown in fig. 4, the pile head 4 of the present utility model includes pile plates 41 having a trapezoidal structure, and four pile plates 41 are welded to form a conical crisscross body.

According to the pile driver for PHC pipe piles, the upper rod body 1 is combined with the lower rod body 2, so that the length of the pile driver is increased to meet the requirement of overlength pile driving, and meanwhile, the air holes 1212 are formed in the sealing plate 11 to form an air circulation channel, so that the vacuum effect in the pile driver pulling-out process is eliminated; the upper part of the pile body is provided with about 1/3 of the welded part with the reinforcing blocks, so that the strength of the sleeve of the pile feeder and the sealing plate is enhanced; meanwhile, by adopting the structural design of the pile head 4 and the flaring head 3, the accurate positioning of the pile head can be ensured, and the flaring plate 32 on the flaring head 3 can effectively reduce the soil action of the upper rod body 1 and the lower rod body 2 and the hole, so that the problem of pile delivery blockage caused by scattering of soil in the hole in the pile delivery process is solved.

According to the pile conveying appliance for PHC pipe piles, the upper rod body 1 and the lower rod body 2 form the pile conveying channel, so that the pipe piles are conveyed, the eccentricity ratio can meet the standard requirement, the pipe piles can be directly conveyed to the designed elevation, pile cutting is not required after excavation, and the material cost of the pipe piles is saved.

Finally, the method of the present utility model is only a preferred embodiment and is not intended to limit the scope of the present utility model. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims (6)

1. A pile driving device for PHC tubular piles is characterized by comprising an upper rod body, a lower rod body and a pile head, wherein the upper rod body is connected with the lower rod body in a hollow and welded mode, the pile head is connected with the lower rod body through a flaring head, the flaring head comprises a body with a large upper part and a small lower part, a spiral flaring plate is arranged on the body, the pile head is arranged on the flaring head through a screw, an annular sealing plate is arranged at the top of the upper rod body, and ventilation holes are uniformly distributed in the sealing plate.

2. The pile driver for PHC pile according to claim 1, wherein a reinforcing plate is provided at the junction of the upper and lower bars.

3. A pile driver for PHC piles as claimed in claim 1, wherein a lower rib is provided between the body and the lower shaft.

4. A pile driver for PHC piles as claimed in claim 1, wherein an upper rib is provided between the sealing plate and the upper rod.

5. The pile driver for PHC pile according to claim 1, wherein a plurality of lifting lugs are provided in the length direction of the upper and lower bars at intervals.

6. A pile driver for PHC piles as claimed in claim 1, wherein the pile head comprises pile plates of trapezoidal configuration, four of the pile plates being welded to form a conical crisscross body.