CN212078064U

CN212078064U - Pile hammer for construction of cast-in-place pile in gravel backfilling site

Info

Publication number: CN212078064U
Application number: CN202020421263.0U
Authority: CN
Inventors: 廉兆成
Original assignee: Jiangsu Changjiang Mechanization Foundation Engineering Co ltd
Current assignee: Jiangsu Changjiang Mechanization Foundation Engineering Co ltd
Priority date: 2020-03-28
Filing date: 2020-03-28
Publication date: 2020-12-04
Anticipated expiration: 2030-03-28

Abstract

The utility model discloses a rubble is backfilled place pile construction and is used pile hammer, including the pile hammer and install the lug at the pile hammer top, pile hammer outer wall annular all is equipped with four piece at least garrulous slates, and the pile head has been installed to the bottom of pile hammer, and the inner wall annular of pile head all is equipped with four piece at least interior garrulous bars. Under impulsive force effect, the cutting part slant of the interior garrulous strip of slant setting supports presses the metalling, the rubble slant fragmentation in will squeezing into the pile head, thereby the resistance that receives the rubble when the rubble is dredged to the pile hammer centre bore, the flagging face strikes the contact rubble in-process, the broken cone of even setting can strike the fragmentation to the rubble that blocks the flagging face and subside, reduce the rubble and hinder the ability, the setting of outer cutting edge, can strengthen rubble board border and cut off the ability to the rubble, the pile hammer is beaten out the stake hole in-process to the rubble backfill place, through further strikeing the breakage to the rubble, can effectively reduce the restriction of metalling to the flagging ground of pile.

Description

Pile hammer for construction of cast-in-place pile in gravel backfilling site

Technical Field

The utility model belongs to the technical field of bored concrete pile hammer, concretely relates to pile hammer is used in place bored concrete pile construction is backfilled to rubble.

Background

Pile hammer, it rises to drive through stake machine lifting arm, then falls rapidly, and it is many times to come and go, can go out the stake hole with ground for lower stake, current pile hammer mainly has pile hammer and pile head to constitute, and the outer wall annular of pile hammer all is equipped with the sideboard, and the effect of sideboard lies in stake awl hammer to ground in-process, and the sideboard can be extruded the peripheral earth in stake hole to the outside to do benefit to next promotion stake awl.

In the process of piling holes in a gravel backfilling field, the defects are as follows: because the broken stones cover the soil surface, in the process of the falling of the pile hammer, as the broken stones are not as soft as the soil, most broken stones in the falling area cannot be directly crushed but are supported on the ground, and the ground feedback impact force is greatly restricted by the sinking amount.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a rubble is backfilled place pile hammer for bored concrete pile construction to solve among the prior art because the rubble covers on the earth face, flagging regional most rubble can not directly be garrulous, but supports subaerial, ground repayment impact force receives the problem that the amount of sinking received obvious restriction.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a rubble is backfilled place pile construction and is used pile hammer, includes the pile hammer and installs the lug at the pile hammer top, pile hammer outer wall annular all is equipped with four piece at least garrulous slates, the pile head has been installed to the bottom of pile hammer, the inner wall annular of pile head all is equipped with four piece at least interior garrulous strips, the lateral part of garrulous slate is equipped with outer cutting edge.

Preferably, the transverse section of the inner broken strip is an isosceles triangle, and the lower end of the inner broken strip is provided with a chamfer plane.

Preferably, the outer cutting edge has a double-edge structure.

Preferably, the lower end of the stone chipper plate is provided with a drooping surface, and crushing cones are uniformly arranged on the drooping surface and along the arrangement direction of the drooping surface.

Compared with the prior art, the beneficial effects of the utility model are that:

firstly, under the action of the downward impact force, the blade parts of the obliquely arranged inner broken strips obliquely abut against the broken stone layer to obliquely break the broken stones squeezed into the pile head, so that the resistance of the broken stones is reduced when the center hole of the pile hammer dredges the broken stones.

Second, flagging face strikes the contact rubble in-process, and the broken awl of even setting can reduce the rubble and hinder the ability to the rubble impact fragmentation that blocks flagging face subsides, and the relative horizontal plane of flagging face contacts the rubble layer, has the effect of dredging the rubble outward to one side, effectively reduces the flagstone flagging resistance of rubble, and the setting of outer cutting edge can strengthen the rubble board border and cut off the ability to the rubble.

Thirdly, this kind of pile hammer is beaten out stake hole in-process to rubble backfill place, through further strikeing the breakage to the rubble, can effectively reduce the restriction of rubble layer to the flagging ground of pile hammer.

Drawings

Fig. 1 is a schematic front view of the present invention;

FIG. 2 is a partially cut-away front view of the present invention;

fig. 3 is a schematic top view of the present invention;

fig. 4 is a top view partially cut-away schematic view of the present invention;

fig. 5 is a schematic bottom view of the present invention.

In the figure: 1 pile hammer, 2 lifting lugs, 3 broken stone plates, 4 pile heads, 5 inner broken strips, 6 inclined cutting surfaces, 7 outer cutting edges, 8 vertical surfaces and 9 broken cones.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1, fig. 2, fig. 3, fig. 4 and fig. 5, the present invention provides a technical solution: a pile hammer for the construction of a cast-in-place pile in a gravel backfill site comprises a pile hammer 1 and a lifting lug 2 arranged at the top of the pile hammer 1, wherein the pile hammer 1 is of a hollow pipe column structure, the lifting lug 2 is of a semicircular structure, the lifting lug 2 is used for hanging a fishing hook of a pile machine, the lifting lug 2 and a pile cone 1 are integrated by fusion casting, four broken stone plates 3 are arranged on the outer wall of the pile hammer 1 in an annular mode, the broken stone plates 3 and the pile hammer 1 are integrated by fusion casting, a pile head 4 is arranged at the bottom of the pile hammer 1, the pile hammer 1 and the pile head 4 are integrated by fusion casting, the pile head 4 is of a conical cylinder structure, a large opening is downward, the pile hammer is favorable for impacting soil in the dropping process and is discharged through an upper end opening of the pile hammer 1 to reduce the resistance force of impacting the soil, four broken bars 5 are arranged on the inner wall of the pile head 4 in an annular mode, the inner broken bars 5 and the pile head 4 are integrated by fusion casting, the transverse cross section of the inner broken bars 5 is of a triangle, some rubbles can be rushed into the pile head 4, under the action of the downward impulsive force, the cutting part of the inner broken bar 5 obliquely arranged obliquely supports against the rubble layer, the rubbles extruded into the pile head 4 are obliquely crushed, the lower end of the inner broken bar 5 is provided with the inclined cut surface 6, and under the action of the downward impulsive force, the arrangement of the inclined cut surface 6 is favorable for obliquely dredging the rubbles to the cutting part of the inner broken bar 5.

Referring to fig. 1, fig. 2, fig. 3, fig. 4 and fig. 5, the lateral part of the gravel plate 3 is provided with an external cutting edge 7, the external cutting edge 7 is of a double-edge structure, in the dropping process of the pile hammer, the cutting capability of the edge of the gravel plate 3 to the gravel can be enhanced through the external cutting edge 7, the lower end of the gravel plate 3 is provided with a downward surface 8, the downward surface 8 is in contact with the gravel layer relative to the transverse plane, the effect of outward oblique dredging the gravel is achieved, the dropping resistance of the gravel plate 3 is effectively reduced, crushing cones 9 are uniformly arranged on the downward surface 8 and along the setting direction of the downward surface 8, the crushing cones 9 and the gravel plate 3 are integrated by fusion casting, the crushing cones 9 are of a cone structure, and in the process of impacting and contacting the gravel by the downward surface 8, the uniformly arranged crushing cones 9 can impact and crush the gravel blocking the downward surface 8 from.

When the pile cone droops to the gravel layer, a part of gravel is flushed into the pile head 4, under the action of the downward impact force, the blade part of the obliquely arranged inner broken bar 5 obliquely supports against the gravel layer to obliquely crush the gravel squeezed into the pile head 4, so that the resistance of the broken stone is reduced when the central hole of the pile hammer 1 dredges the broken stone, and in the process that the downward vertical surface 8 impacts and contacts the broken stone, the uniformly arranged crushing cones 9 can impact and crush the crushed stones which are prevented from settling on the vertical surface 8, reduce the blocking capability of the crushed stones, the downward hanging surface 8 contacts the gravel layer relative to the transverse plane, has the effect of outward inclined dredging the gravel, effectively reduces the downward hanging resistance of the gravel plate 3, can enhance the capability of cutting the gravel by the edge of the gravel plate 3 due to the arrangement of the external cutting edge 7, this kind of pile hammer is beaten out stake hole in-process to rubble backfill place, through further strikeing the breakage to the rubble, can effectively reduce the restriction of rubble layer to the flagging ground of pile hammer.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a rubble is backfilled place pile for bored concrete pile construction, includes pile hammer (1) and installs lug (2) at pile hammer (1) top, its characterized in that: pile hammer (1) outer wall annular all is equipped with four piece at least garrulous slates (3), pile head (4) have been installed to the bottom of pile hammer (1), the inner wall annular of pile head (4) all is equipped with four piece at least garrulous strips (5), the lateral part of garrulous slate (3) is equipped with outer cutting edge (7).

2. The pile hammer for construction of the bored pile in the gravel backfill site according to claim 1, characterized in that: the transverse section of the inner broken strip (5) is an isosceles triangle, and the lower end of the inner broken strip (5) is provided with a chamfer plane (6).

3. The pile hammer for construction of the bored pile in the gravel backfill site according to claim 1, characterized in that: the outer cutting edge (7) is of a double-edge structure.

4. The pile hammer for construction of the bored pile in the gravel backfill site according to claim 1, characterized in that: the lower end of the stone crusher plate (3) is provided with a vertical surface (8), and crushing cones (9) are uniformly arranged on the vertical surface (8) along the arrangement direction of the vertical surface (8).