CN101476321A - Piston type pile cap - Google Patents
Piston type pile cap Download PDFInfo
- Publication number
- CN101476321A CN101476321A CNA2009100772561A CN200910077256A CN101476321A CN 101476321 A CN101476321 A CN 101476321A CN A2009100772561 A CNA2009100772561 A CN A2009100772561A CN 200910077256 A CN200910077256 A CN 200910077256A CN 101476321 A CN101476321 A CN 101476321A
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- force
- cylindrical shell
- block
- transmitting block
- rib
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- Placing Or Removing Of Piles Or Sheet Piles, Or Accessories Thereof (AREA)
Abstract
The invention relates to a piston type pile cap which comprises a cylinder body, a force transfer block, an impact block and a rubber damping ring, wherein the force transfer block is positioned on the upper part inside the cylinder body, and has clearances with the inner wall of the cylinder body in the radial direction and upper ribs and lower ribs of the cylinder body in the axial direction; the rubber damping ring is arranged between the force transfer block and the upper ribs of the cylinder body; the upper part of the force transfer block is cylindrical; and the impact block is positioned in a cylinder on the upper part of the force transfer block.
Description
Technical field
The invention belongs to hydraulic engineering steel pipe pile pile sinking technical field, relate to the pile cover that a kind of steel pipe pile sinking uses.
Background technology
The piling bar pile sinking will use pile cover usually, and pile cover is placed the stake top, by impacting pile cover, finishes the piling bar pile sinking.Figure 1 shows that the structure chart of pile cover commonly used at present, mainly comprise cylindrical shell 1 ', impact block 2 ', skirt body 6 ' three parts.Wherein impact block 2 ' is a round iron plate, is placed in the cylinder on the cylindrical shell 1 ', directly is subjected to hammer force; Cylindrical shell is welded by each structural member, transmits hammer force; The skirt body plays guiding and positioning action to stake, and the skirt body is welded to connect with cylindrical shell.During use, the diesel hammer hammer impacts is fast, and hammer force F is kept to power F ' through the cylindrical shell transmission, and F ' acts on the stake top 5 ', makes the stressed sinking of stake.
There is following defective in this kind pile cover:
Cylindrical shell and skirt body form for the annealing of structural member welding integral, and the weld seam solder joint is many, and welding quality and heat treatment requirements are very strict, and total quality is difficult to guarantee;
Pile cover is through repeatedly hammering, and stress is concentrated easily, and weld seam or weak sheet material cracking are easily scrapped, and the life-span is low, and the life-span is generally in 100 piles;
The pile cover height overall is generally at 2M-3M, and weight is big, and cost is higher;
Power is passed to cylindrical shell from impact block, and cylindrical shell is passed to stake top again, the transmission distance of power, and cylindrical shell is elastic body, absorbed portion of energy, causes effective hammer force to descend.
Summary of the invention
The objective of the invention is to defective, a kind of new pile cover is provided, prolong the application life of pile cover, reduce cost, and improve pile sinking efficient at pile cover commonly used at present.
Technical scheme of the present invention is as follows:
Piston type pile cap comprises cylindrical shell, impact block, it is characterized in that: described pile cover also comprises force-transmitting block, and force-transmitting block is positioned at the cylindrical shell internal upper part; Last rib is arranged at described cylindrical shell top, in following rib is arranged, described force-transmitting block radially and cylinder inboard wall, axially and all gapped between the upper and lower rib of cylindrical shell; Described impact block is positioned at force-transmitting block top.
Further, a rubber shock-absorbing circle is arranged on described force-transmitting block and the cylindrical shell between the rib.
Further, force-transmitting block top is cylindric, and described impact block is placed in this cylinder.
Described impact block and force-transmitting block are forging.
Pile cover of the present invention is owing to adopted piston cylinder operator, the non-main stressed member of cylindrical shell, thereby the life-span of having improved pile cover greatly; Cylindrical shell mainly play the guiding role, and pile cover length can shorten, thereby the overall weight of pile cover reduces the cost reduction; Force-transmitting block directly acts on the stake top, has reduced the loss of impact force, improves pile sinking efficient.
Description of drawings
Fig. 1 is the structural representation of common pile cover
Fig. 2 is a structural representation of the present invention
The specific embodiment
Below in conjunction with the drawings and the specific embodiments, the present invention is described in further detail.
Structural representation shown in Figure 2 is a longitudinal sectional view of the present invention, mainly comprises cylindrical shell 1, impact block 2, force-transmitting block 3, rubber shock-absorbing circle 4.
Following rib 11 is arranged in the cylindrical shell 1, and last rib 12 is arranged at top.Force-transmitting block 3 is positioned at cylindrical shell 1 internal upper part, and force-transmitting block 3 is radially and gapped between the cylinder inboard wall, and is also gapped between rib 12 axially and on the cylindrical shell and following rib 11.Impact block 2 is positioned at force-transmitting block 3 tops.A cylinder 31 is welded on force-transmitting block top, and impact block 2 is round iron plates, is positioned in the cylinder 31 on force-transmitting block 3 tops; Force-transmitting block, impact block are forging.Rubber shock-absorbing circle 4 is on force-transmitting block 3 and the cylindrical shell between the rib 12.
During use, the diesel hammer hammer impacts is fast 2, and hammer force is F, and F transmits through force-transmitting block 3 and is that power F ', F ' act directly on the stake top 5, make the stressed sinking of stake.This structure is because no longer by the cylindrical shell power transmission, the transmission of power is apart from shortening, and the loss of power reduces, thereby has improved pile sinking efficient.
Because force-transmitting block 3 and cylindrical shell 1 are gapped in radial and axial direction, axially can relative motion, be similar to piston structure each other.Force-transmitting block 3, impact block 2 are forging, application life speciality; Cylindrical shell 1 mainly plays guiding and location to stake when pile sinking, non-main stressed member, thereby the bulk life time of pile cover is improved.
During pile sinking, force-transmitting block 3 and cylindrical shell 1 are in axial relative motion, impact may take place with force-transmitting block 3 in rib 12 on the cylindrical shell, for reducing the shock effect between force-transmitting block and the cylindrical shell, 12 of ribs add a ring-shaped rubber shock absorbing ring 4 on force-transmitting block 3 and cylindrical shell, absorb between force-transmitting block and the cylindrical shell and impact the energy that produces, the application life of further having improved pile cover.
The present invention compares with common pile cover because cylindrical shell play the guiding role, and the pile cover height overall is shortened, pile cover weight saving, and cost reduces.
Specific embodiment:
Pile cover mainly comprises cylindrical shell, force-transmitting block, impact block, rubber shock-absorbing circle, force-transmitting block is positioned at the cylindrical shell internal upper part, radially and certain interval arranged between the cylinder inboard wall, axially with about the cylindrical shell certain interval is also being arranged between rib, end play is 10CM, but force-transmitting block and cylindrical shell are in axial relative motion; Force-transmitting block is a forging, and top is cylindric, and impact block is a round iron plate, is positioned at the cylinder on force-transmitting block top; The rubber shock-absorbing circle is that section is circular, and diameter is 5CM, is made by good toughness, rubber that shock-absorbing effect is good.The pile cover height overall is 1.5M-2M.
The foregoing description is compared with common pile cover, and it is about 20% that pile cover weight descends, and each cost reduces about 20%; During actual the use, the straight stake life-span of injection can be brought up to more than 400 piles, and the injection taper pile life-span is brought up to more than 200 piles.Because no longer by the cylindrical shell power transmission, the transmission of power is apart from shortening, the loss of power reduces, thereby has improved pile sinking efficient, and more common pile cover is saved pile sinking cost 30-40% during use.
The foregoing description only is a kind of better embodiment, is used for explaining and non-limiting the present invention any foundation spirit of the present invention and equivalents of making all should belong to protection scope of the present invention.
Claims (3)
1. piston type pile cap comprises cylindrical shell, impact block, it is characterized in that: described pile cover also comprises force-transmitting block, and force-transmitting block is positioned at the cylindrical shell internal upper part; Last rib is arranged at described cylindrical shell top, in following rib is arranged, described force-transmitting block radially and cylinder inboard wall, axially and all gapped between the upper and lower rib of cylindrical shell; Described impact block is positioned at force-transmitting block top.
2. piston type pile cap according to claim 1 is characterized in that: a rubber shock-absorbing circle is arranged between the rib on described force-transmitting block and the cylindrical shell.
3. piston type pile cap according to claim 1 is characterized in that: described force-transmitting block top is cylindric, and described impact block is placed in this cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2009100772561A CN101476321A (en) | 2009-01-21 | 2009-01-21 | Piston type pile cap |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2009100772561A CN101476321A (en) | 2009-01-21 | 2009-01-21 | Piston type pile cap |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101476321A true CN101476321A (en) | 2009-07-08 |
Family
ID=40837096
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2009100772561A Pending CN101476321A (en) | 2009-01-21 | 2009-01-21 | Piston type pile cap |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101476321A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102444125A (en) * | 2011-10-21 | 2012-05-09 | 中铁十七局集团第六工程有限公司 | Construction method for improving penetrating speed and bearing capacity of prestressed pipe pile |
| CN106436694A (en) * | 2016-11-03 | 2017-02-22 | 山东省建筑科学研究院 | Precast pile cap applicable to jet grouting soil-cement-pile strengthened pile composite foundation |
| CN114072558A (en) * | 2019-06-28 | 2022-02-18 | Ihc荷兰知识产权有限公司 | Pile driver and method |
-
2009
- 2009-01-21 CN CNA2009100772561A patent/CN101476321A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102444125A (en) * | 2011-10-21 | 2012-05-09 | 中铁十七局集团第六工程有限公司 | Construction method for improving penetrating speed and bearing capacity of prestressed pipe pile |
| CN106436694A (en) * | 2016-11-03 | 2017-02-22 | 山东省建筑科学研究院 | Precast pile cap applicable to jet grouting soil-cement-pile strengthened pile composite foundation |
| CN114072558A (en) * | 2019-06-28 | 2022-02-18 | Ihc荷兰知识产权有限公司 | Pile driver and method |
| CN114072558B (en) * | 2019-06-28 | 2024-05-28 | Iqip控股公司 | Pile driver and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20090708 |