CN2813871Y - Semi-screw drilling rod structure - Google Patents
Semi-screw drilling rod structure Download PDFInfo
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- CN2813871Y CN2813871Y CN 200520060015 CN200520060015U CN2813871Y CN 2813871 Y CN2813871 Y CN 2813871Y CN 200520060015 CN200520060015 CN 200520060015 CN 200520060015 U CN200520060015 U CN 200520060015U CN 2813871 Y CN2813871 Y CN 2813871Y
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- drilling rod
- half screw
- novel half
- bearing
- jackrod
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Abstract
The utility model relates to a novel screw drilling rod structure, which comprises a drilling rod and a drilling bit, wherein at least one part of the drilling rod forms a screw structure; the top part of the drilling rod is provided with a fixing supporting bearing; the drilling rod is fixedly connected with a power device by the bearing; the drilling rod structure can be stably hung under the power device by the structure, and in the process of downward piling, the opposite acting force of a soil layer can be transferred on a tower frame of the whole pile driver by the power device due to the function the bearing which is connected between the drilling rod and the power device. Thus, the drilling rod does not bear the acting force, so that the drilling rod which drilled is protected. The utility model lightens the work load of the drilling rod, enhances driving efficiency and prolongs the service life of the drilling rod.
Description
Technical field
The utility model relates to drilling rod for building, and a kind of half novel screw-type drilling rod of saying so exactly, this drilling rod can rely on the synchronous effect of torsion+pressure to reach to creep into holds power soil layer order ground, and live load is little, the efficient height.
Background technology
In the process of foundation basic construction, stake is building load-bearing and firm key.No matter be prefabricated both at home and abroad or Cast-in-place concrete friction+end bearing pile, the stake end group originally is placed on to have better holds the power soil layer, and under utmost point root bearing capacity state, the primary load of stake is still born by pile side friction.Although the concrete compressive strength deposit is very big, be difficult to performance, often with the bearing capacity limit index of soil body friction destruction as stake.
Along with the birth of the prefabricated full thread stake of Japanese steel fibre, changed this stress characteristic afterwards, but it can not get the popularization of extensive use owing to high cost.ZL200320190095.6 is described as the patent No., and this equipment has been realized once pouring into into the screw rod stake with ordinary concrete with method.Promptly earlier drilling rod is pierced underground, get into projected depth after, drilling rod is extracted in reverse rotation out, concrete perfusion simultaneously, drilling rod is extracted out and is finished, concrete also pours into and finishes.Greatly reduce construction cost, improve efficiency of construction.This has very high bearing capacity, and application prospect is very good.
But also there is following defective in present design:
One, the drilling rod opposition that in the process of boring soil, will bear soil layer, this huge axial counter-force often reaches 20～30 tons; This counter-force causes great injury by drilling rod to power-driven system, weakens its power output simultaneously.Long-term use must influence the life-span of power-driven system.
Two, when concrete perfusion, concrete tends to the outlet of bulk deposition at drilling rod, stops up outlet easily, causes plugging.
Three, drilling rod will get into underground more than 20 meters even darker and keep tube wall not leak (once leak will produce concrete stop up), requires sealing, and the difficulty of installation drilling rod is very big.
Summary of the invention
The purpose of this utility model provides a kind of novel half-thread jackrod structure, this structure can stop this axial counter-force reach power drive system, greatly alleviate its live load, improve transmission efficiency and working life.
Another purpose of the present utility model is to provide a kind of novel half-thread jackrod structure, and this structure is concrete perfusion fast, avoids the plugging of concrete when perfusion.
Another purpose of the present utility model is to provide a kind of novel half-thread jackrod structure, and this structure makes the drilling rod sectional of equivalent length assemble, and is convenient to installation and removal, can adjust the length of drilling rod according to concrete actual conditions in real time.
Another purpose of the present utility model is to provide a kind of novel half-thread jackrod structure, and this structure can make drilling rod to bore easy construction, and the intensity height of drilling rod, long service life fast down.The pile body that uses this drilling rod to be shaped is more obeyed the force mechanism of closing pile body.
The utility model is achieved in that
A kind of novel half-thread jackrod structure, it includes drilling rod, drill bit, drilling rod has at least a part to be helical structure, the top that it is characterized in that drilling rod has the fixed support bearing, this bearing is fixedlyed connected between drilling rod and the power set, make drilling rod when boring down, the opposite direction active force that soil layer produces is unloaded on whole pylon by commentaries on classics.Power set are not subjected to axial counter-force.
Described bearing is an axial thrust bearing, be fixed on the framework of power set, axial counter-force is unloaded on the pylon along the power drive system outside framework, stop this axial counter-force reach power drive system, greatly alleviate its live load, improve transmission efficiency and working life.
Described drilling rod, it has outer tube and interior pipe, and outer tube is to establish for transmitting torsion and pressure, and external diameter can be made according to the demand of reality; Interior pipe is to cooperate pumping of concrete and establish, and is that concrete perfusion is convenient, and its internal diameter is generally Ф 100～150mm.
Described drilling rod, it is that segmentation is provided with, drilling rod is divided into more than one section part at least, adopts spline or tooth scarf that, sheath is connected between each of drilling rod section part.
And above-mentioned drilling rod, connection sheath between its each section part adopts sleeve+screw thread or sleeve+pin, with the sealing ring sealing, make the installation and removal operating efficiency heighten, and can when not increasing the pylon height, extend total long.
Described jackrod structure, its helicitic texture is positioned at the bottom of drilling rod body, and the inside of this drilling rod is hollow structure, and the bottom of drilling rod is provided with surge chamber, the surge chamber effect is to guarantee that the mixed soil of doubting is smooth in interior pipe in the pump pressure process, and the while is difficult for broken pile in the time of making the perfusion pile; And the rear portion of drill rod thread structure division, its bar footpath is greater than the bar footpath at other position of drill rod thread structure, and the helical structure of this overstriking makes drilling rod can pierce harder soil layer, forms the screw rod stake of multistage screw thread.The pile body that pour into simultaneously shaping is more obeyed a force mechanism of closing in the soil body.The screw rod stake of this multistage screw thread is particularly useful for end and holds+rub the sassafras stake.
Above-mentioned surge chamber is in the drilling rod bottom, the long cavity of about 500～1000mm that forms between apex point and the interior pipe, this surge chamber can have the chamber that enlarges than interior pipe, can hold an amount of concrete, be convenient to prevent the breaking phenomenon of concrete when perfusion, guarantee concrete continous pouring.
Described jackrod structure keeps the proper proportion relation between the blade pitch of its helical structure and the nominal diameter of drilling rod, be convenient to blade and can stablize quick underground drilling, and this proportionate relationship generally is 1: 1～1: 1.1.
Above-mentioned blade, its cross section are 60 °～70 ° isosceles trapezoids, and concrete size is decided on drill pipe diameter and drilling tool nominal diameter.
The utility model adopts above-mentioned structure, in the process of piling, because the effect of connection bearing between drilling rod and the power set can directly be transferred to the soil layer opposition on the pylon of a machine, makes power set not bear this reaction force.Alleviate live load greatly, improve transmission efficiency, increase the service life.
The segmentation setting of drilling rod: by the connection of spline (tooth embedding), sheath, drilling rod can be made as each section different in size, according to the construction needs, arbitrarily connects into the drilling rod of all lengths.It is long to extend total stake when not increasing the pylon height.
The effect of surge chamber: guarantee to mix doubtful soil and in the pump pressure process, go out interior pipe smoothly, prevent plugging.During concrete perfusion, the concrete in the surge chamber can play the continuous uninterrupted effect.
The setting of helicitic texture and drill bit makes drilling rod to creep into quickly and efficiently, improves the efficient of piling.Improve the bearing capacity of stake, save concrete.
Description of drawings
Fig. 1 is a structural representation of the present utility model,
Fig. 2 is the partial enlarged drawing of A part shown in Figure 1,
Fig. 3 is the sectional view of the utility model half-thread drilling rod part.
The specific embodiment
Shown in accompanying drawing, describe enforcement of the present utility model in detail.
Shown in Figure 1, the utility model is a kind of novel half-thread jackrod structure, it includes drilling rod 6, drill bit 9, wherein drilling rod 6 has at least a part to be helical structure, in the present embodiment, the bottom of drilling rod is a helical structure 7, the top of drilling rod 6 has fixed support bearing 3, and (bottom of this bearing 3 is fixed covers 4, so that bearing 3 is fixed on the framework of power set 1), this bearing 3 has two, fixedly connected between drilling rod 6 and the power set 2 (top of power set is two motors 1), make drilling rod 6 when boring down, the directive effect that soil layer produces was tried hard to avoid power set 2 changes and unloads on whole pylon.
Above-mentioned bearing 3 is an axial thrust bearing, and axial counter-force is unloaded on the pylon along the outside framework of power set, stop this axial counter-force reach power drive system, greatly alleviate power set 2 live load, improve transmission efficiency and working life.
In conjunction with Fig. 2, for drilling rod 6, it has outer tube 61 and interior pipe 62, and outer tube 61 is to establish for transmitting torsion and pressure, and diameter can be made according to the demand of reality, and the external diameter of outer tube 61 is generally Ф 180～325mm, wall thickness 16～22mm; In pipe 62 be to cooperate pumping of concrete and establish, be that concrete perfusion is convenient, its internal diameter is generally Ф 100～150mm.
The helical structure 7 of drilling rod 6 is positioned at the bottom of drilling rod body, and except the inside of this helical structure is the hollow structure, the bottom of the helical structure 7 of drilling rod also is provided with surge chamber 71, the effect of surge chamber 71 is to guarantee that the mixed soil of doubting is smooth in interior pipe 62 in the pump pressure process, and the while is difficult for broken pile in the time of making the perfusion pile.
Above-mentioned surge chamber 71 is arranged on the drilling rod bottom, concrete situation is that (size of cavity determines the long cavity of about 500～1000mm that forms between apex point 9 and the interior pipe 62 according to the actual needs, when for example drill pipe diameter is Ф 300mm, cavity can be made as Ф 180-240mm, length is the cavity of 500～1000mm size), this surge chamber 71 can have the chamber that enlarges than interior pipe 62, can hold an amount of concrete, be convenient to prevent the breaking phenomenon of concrete when perfusion, guarantee concrete continous pouring.
For drilling rod, its helicitic texture 7 is positioned at the bottom of drilling rod body 6, and the inside of this drilling rod 6 is hollow structures, and the bottom of drilling rod is provided with surge chamber 71; And the rear portion of drill rod thread structure 7 parts, its bar footpath is greater than the bar footpath at other position of drill rod thread structure, and the helical structure of this overstriking makes drilling rod can pierce harder soil layer, forms the screw rod stake of multistage screw thread.The pile body that pour into simultaneously shaping is more obeyed a force mechanism of closing in the soil body.The screw rod stake of this multistage screw thread is particularly useful for end and holds+rub the sassafras stake.
The helical structure 7 of drilling rod keeps the proper proportion relation between the nominal diameter of its blade pitch and drilling rod 6, be convenient to blade 8 and can stablize quick underground drilling, and this proportionate relationship generally is 1: 1～1: 1.1.
And this blade 8, its cross section are 60 °～70 ° isosceles trapezoids, and concrete size is decided on drill pipe diameter and drilling tool nominal diameter.The outermost end of its cross section is straight cut surface 81 (this cut surface also can be other form of structure), is convenient to blade 8 helical cut soil layers, can accelerate screw rod and partly pierce soil layer, helps drilling rod and pierces downwards.
During piling, direction along the blade 8 of drilling rod 6 helical structures 7, pierce soil layer downwards, after being drilled into the desired degree of depth, reverse rotation drilling rod 6 is extracted drilling rod out, passes through the interior pipe 62 of drilling rod simultaneously to the pile foundation pumping of concrete, when the drilling rod reverse rotation is promoted to about 1/3～2/3 degree of depth, drilling rod is rotated in the forward and the simultaneous pumping concrete to design elevation, can finish the work of piling.
After drilling rod bores down and finishes, in the process of concrete perfusion, can calculate the amount of concrete perfusion in advance or by watch-dog, as pressure sensor etc., pressure, the groundwater increment of control drilling rod inner concrete are to guarantee the intensity of perfusion smoothly and pile body.
The above; be the specific embodiment of the present utility model, do not represent all implementations of the utility model, every structurally similar with the utility model; the concrete application of identical or similar solution is arranged, all within protection domain of the present utility model.
Claims (9)
1, a kind of novel half screw jackrod structure, it includes drilling rod, drill bit, and drilling rod has a part at least for helical structure, it is characterized in that the top of drilling rod has the fixed support bearing, and this bearing is fixedlyed connected between drilling rod and the power set.
2, novel half screw jackrod structure as claimed in claim 1 is characterized in that bearing is an axial thrust bearing, is fixed on the framework of power set.
3, novel half screw auger stem structure as claimed in claim 1 is characterized in that described drilling rod, its have outer tube and in pipe, outer tube is to establish for transmitting torsion and pressure, interior pipe is to cooperate pumping of concrete and establish, its diameter is generally Ф 100～150mm.
4, novel half screw jackrod structure as claimed in claim 1 is characterized in that described drilling rod, and it is that segmentation is provided with, and drilling rod is divided into more than one section part at least, adopts spline or tooth scarf that, sheath is connected between each of drilling rod section part.
5, novel half screw jackrod structure as claimed in claim 4 is characterized in that above-mentioned drilling rod, and the junction between its each section part guarantees sealing.
6, novel half screw jackrod structure as claimed in claim 1 is characterized in that described jackrod structure, and its helicitic texture is positioned at the bottom of drilling rod body, and the rear portion of drill rod thread structure division, and its diameter is greater than the diameter at other position of helicitic texture.
7, novel half screw jackrod structure as claimed in claim 6 is characterized in that above-mentioned surge chamber is in drilling rod bottom, and is hollow structure in the inside of this drilling rod, forms the long cavity of about 500～1000mm between the interior pipe of drilling rod and the drill bit, i.e. surge chamber.
8, novel half screw jackrod structure as claimed in claim 6 is characterized in that described jackrod structure, 1: 1～1: 1.1 proportionate relationship between the blade pitch of its auger stem and the nominal diameter of drilling rod.
9, novel half screw jackrod structure as claimed in claim 8 is characterized in that above-mentioned blade, and its cross section is 60 °～70 ° an isosceles ladder type.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520060015 CN2813871Y (en) | 2005-06-13 | 2005-06-13 | Semi-screw drilling rod structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520060015 CN2813871Y (en) | 2005-06-13 | 2005-06-13 | Semi-screw drilling rod structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2813871Y true CN2813871Y (en) | 2006-09-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520060015 Expired - Fee Related CN2813871Y (en) | 2005-06-13 | 2005-06-13 | Semi-screw drilling rod structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2813871Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102561338A (en) * | 2011-12-21 | 2012-07-11 | 孔超 | Pile making device and pile making method for soil-displacement reinforced concrete screw piles |
| CN105696941A (en) * | 2016-03-31 | 2016-06-22 | 国家电网公司 | Complete-function drilling machine for electric power construction |
| CN108318659A (en) * | 2018-02-05 | 2018-07-24 | 魏长同 | A kind of soil humidity detector |
-
2005
- 2005-06-13 CN CN 200520060015 patent/CN2813871Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102561338A (en) * | 2011-12-21 | 2012-07-11 | 孔超 | Pile making device and pile making method for soil-displacement reinforced concrete screw piles |
| CN105696941A (en) * | 2016-03-31 | 2016-06-22 | 国家电网公司 | Complete-function drilling machine for electric power construction |
| CN108318659A (en) * | 2018-02-05 | 2018-07-24 | 魏长同 | A kind of soil humidity detector |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Free format text: FORMER OWNER: ZHANG CHAO Owner name: ZHANG CHAO Free format text: FORMER OWNER: ZHANG NING Effective date: 20110512 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20110512 Address after: 518110, Guangdong, Shenzhen province Longgang Town, Longhua Vanke Four Seasons flower city Patentee after: Zhang Chao Address before: 518110, Guangdong, Shenzhen province Longgang Town, Longhua Vanke Four Seasons flower city Co-patentee before: Zhang Chao Patentee before: Zhang Ning |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20060906 Termination date: 20140613 |
|
| EXPY | Termination of patent right or utility model |