CN210946790U - Rotary drilling rig for rotary-expanding steel pipe pile - Google Patents
Rotary drilling rig for rotary-expanding steel pipe pile Download PDFInfo
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- CN210946790U CN210946790U CN201921375563.3U CN201921375563U CN210946790U CN 210946790 U CN210946790 U CN 210946790U CN 201921375563 U CN201921375563 U CN 201921375563U CN 210946790 U CN210946790 U CN 210946790U
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Abstract
The utility model discloses a dig rig soon after expanding steel-pipe pile soon, dig the rig soon and include the chassis and install the mast on the chassis, expand the steel-pipe pile unit head soon and install on the guide rail of mast, expand steel-pipe pile unit head both sides soon and be equipped with and hang a hoist, send a pole to pass through locking mechanism to fix and expand the steel-pipe pile unit head soon in, the mast bottom is equipped with pile protector, send a pole bottom to connect and expand the steel-pipe pile soon. The utility model discloses make dig the rig soon and possess and expand steel-pipe pile construction function soon, have once to become the stake, no mud pollutes, low cost, advantages such as low noise.
Description
Technical Field
The utility model relates to an engineering machine tool and pile foundation construction field, in particular to expand steel-pipe pile soon and dig rig.
Background
The prior art rotary drilling rig is structurally shown in fig. 1, and comprises a chassis 1, a mast 5 mounted on the chassis 1, a power head 4 mounted on a guide rail of the mast 5, a winch arranged on the chassis 1 and connected with a telescopic drill rod 3 and a drilling bucket 2 through a steel wire rope, wherein the telescopic drill rod 3 is a mechanical lock type (or friction type) drill rod.
In the prior art, a rotary drilling rig carries a telescopic drill rod to realize the construction method of the concrete cast-in-place pile, drilling and soil unloading circular operation are generally required to realize pore forming, and a reinforcement cage and a guide pipe are placed to carry out concrete cast-in-place pile formation after the pore depth is measured. When the soft bottom layer is encountered, slurry is required to be prepared for wall protection in the hole, a protection cylinder is required to be embedded in the hole opening, and the hole bottom slag removal operation is required before pouring. The whole construction process is complex, the cost is high, and the quality of the finally formed cast-in-place pile can be ensured only by strict monitoring in each link.
The hammering pile driving in the prior art adopts a drop hammer, a diesel hammer, a hydraulic hammer and other hammering precast piles to enter the ground, and has the advantages of high construction efficiency, large vibration and large noise. The static pile press-in machine presses the precast pile by the gravity of the machine body, so that the press-in capacity is limited, the machine is huge, and the transportation cost is high.
SUMMERY OF THE UTILITY MODEL
The present application is directed to solving at least one of the problems in the prior art. Therefore, one of the purposes of the utility model is to provide a rotary drilling rig for rotary-expanding steel pipe piles. The drilling machine has the function of rotary-expanding the steel pipe pile, and has the advantages of one-step pile forming, low noise and the like.
A rotary drilling rig for rotary-expanding steel pipe piles comprises:
a chassis, on which a mast is arranged;
the rotary-expanding steel pipe pile power head is installed on the mast and can slide up and down along the mast under the driving of a pressurizing device;
and the upper end of the pile feeding rod is fixedly arranged on the power head and is driven by the power head to rotate, and the lower end of the pile feeding rod is a rotary-expansion steel pipe pile connecting end.
Further, the pile feeding rod is matched with an internal key bar of the power head through an external key bar to transmit rotation torque, and the pile feeding rod is axially fixed on a rotation body of the power head through a locking mechanism.
Furthermore, the peripheral wall on the pile feeding rod is provided with a slot, the extending direction of the slot is perpendicular to the axis of the pile feeding rod, and the locking mechanism comprises a key plate which can be inserted into the slot in a matching manner.
Further, the slots are arranged in rows along the axial direction of the pile feeding rod, and each row comprises a plurality of slots which are uniformly distributed along the circumferential direction of the pile feeding rod.
Further, the bottom of the mast is also provided with a pile protector coaxial with the pile feeding rod, and the pile protector is provided with a guide through hole matched with the rotary-expanding steel pipe pile.
Further, an inner key strip is arranged on the inner peripheral wall of the bottom end of the pile feeding rod, and an outer key strip matched with the inner key strip is arranged on the outer wall of the top end of the rotary-expanding steel pipe pile.
Further, the bottom of the rotary-expanding steel pipe pile is provided with a helical blade.
Further, the pressurizing device is a hoisting pressurizing device.
Furthermore, hanging pile winches for hoisting the rotary-expanding steel pipe pile are further arranged on two sides of the shell of the power head.
A construction method of a rotary-expanding steel pipe pile rotary drilling rig is characterized in that a steel wire rope on a hoisting winch of the rotary-expanding steel pipe pile rotary drilling rig is used for hoisting a rotary-expanding steel pipe pile from the ground and installing the rotary-expanding steel pipe pile on the rotary-expanding steel pipe pile rotary drilling rig, and a power head of the rotary-expanding steel pipe pile conveys torque and pressure to the rotary-expanding steel pipe pile through a pile conveying rod, so that the rotary-expanding steel pipe pile is implanted. And conversely, the rotary drilling rig for the rotary-expansion steel pipe pile can also pull out the rotary-expansion steel pipe pile from the ground and unload the rotary-expansion steel pipe pile to the ground.
Compared with the prior art, the utility model discloses the beneficial effect who has as follows:
1. the method of pressing the rotary-expanding steel pipe pile by rotating the power head and applying downward pressure to the rotary-expanding steel pipe pile through the pressurizing device has the advantages that the stress of the pile is uniform during drilling, the drilling resistance is reduced, and meanwhile, the perpendicularity of the pile is guaranteed through the pile protector.
2. Adopt this device to carry out the construction, compare hammering steel-pipe pile such as drop hammer, hydraulic hammer and diesel hammer and get into the underground, the noise is little.
3. Compared with cast-in-place pile construction, the device has high pile forming efficiency when being used for construction.
4. The hoisting piles on the two sides of the rotary-expanding steel pipe pile power head can quickly and accurately hoist and dismount the rotary-expanding steel pipe pile, other hoisting equipment is omitted, and the working efficiency is improved.
5. The spiral blade plays a guiding role when the bottom of the rotary-expansion steel pipe pile is drilled, the speed of a drilling machine can be improved, the spiral blade has a large bearing surface after being pressed into a stratum, and the bearing and pulling resistance of the pile can be greatly improved.
The rotary-expanding steel pipe pile rotary drilling rig adopts the chassis and the mast of the traditional rotary drilling rig, and after components such as a power head and the like are refitted, the rotary-expanding steel pipe pile can be pressed into the ground in a rotating way, the construction process is relatively simple, the efficiency is very high, excessive slag soil is not generated, concrete does not need to be poured, and larger noise is not generated; the rotary-expansion steel pipe pile is high in strength, small in disturbance to a bottom layer during construction, capable of greatly improving bearing and uplift resistance of the pile due to the fact that the helical blades are arranged on the head of the rotary-expansion steel pipe pile after the steel pipe pile is pressed in, particularly suitable for building pile and foundation reinforcement, and efficient, environment-friendly and energy-saving construction method.
Drawings
FIG. 1 is a structural diagram of a rotary drilling rig in the prior art;
FIG. 2 is a schematic diagram of the rotary-expanding steel pipe pile rotary drilling rig structure and the construction method of the utility model;
FIG. 3 is a schematic view I of the rotary-expanding steel pipe pile rotary drilling rig of the utility model for hoisting the rotary-expanding steel pipe pile;
FIG. 4 is a schematic diagram II of the rotary-expanding steel pipe pile rotary drilling rig of the utility model for hoisting the rotary-expanding steel pipe pile;
FIG. 5 is a front view of the rotary-expanding steel pipe pile power head of the present invention;
in the figure: 1. a chassis; 2. drilling a bucket; 3. a telescopic drill rod; 4. a power head; 5. a mast; 6. rotatably expanding a power head of the steel pipe pile; 7. pile feeding rod; 8. rotationally expanding the steel pipe pile; 9. pile protectors; 10. a helical blade; 11. hoisting the hanging pile; 12. hoisting a steel wire rope; 13. a locking mechanism; 14. a hoisting and pressurizing device; 15. a slot; 16. an outer spline.
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 efforts belong to the protection scope of the present invention.
The prior art rotary drilling rig is structurally shown in fig. 1, and comprises a chassis 1, a mast 5 mounted on the chassis 1, a power head 4 mounted on a guide rail of the mast 5, a winch arranged on the chassis 1 and connected with a telescopic drill rod 3 and a drilling bucket 2 through a steel wire rope, wherein the telescopic drill rod 3 is a mechanical lock type (or friction type) drill rod.
In the prior art, a rotary drilling rig carries a telescopic drill rod to realize the construction method of the concrete cast-in-place pile, drilling and soil unloading circular operation are generally required to realize pore forming, and a reinforcement cage and a guide pipe are placed to carry out concrete cast-in-place pile formation after the pore depth is measured. When the soft bottom layer is encountered, slurry is required to be prepared for wall protection in the hole, a protection cylinder is required to be embedded in the hole opening, and the hole bottom slag removal operation is required before pouring. The whole construction process is complex, the cost is high, and the quality of the finally formed cast-in-place pile can be ensured only by strict monitoring in each link. The rotary-expanding steel pipe pile rotary drilling rig is properly improved on the basis of the conventional rotary drilling rig, so that the rotary-expanding steel pipe pile rotary drilling rig to be protected by the application is obtained.
Referring to fig. 2, 3 and 4, the rotary-expanding steel pipe pile rotary drilling rig comprises a rotary drilling rig chassis 1, a mast 5, a rotary-expanding steel pipe pile power head 6, a pile feeding rod 7 and a rotary-expanding steel pipe pile 8, wherein the rotary-expanding steel pipe pile power head 6 is mounted on the mast 5 and can slide up and down along a guide rail on the mast 5 under the driving of a hoisting and pressurizing device 14, a locking mechanism 13 is arranged at the lower part of the rotary-expanding steel pipe pile power head 6, and the pile feeding rod 7 is matched with a key bar (not shown) in the rotary-expanding steel pipe pile power head 6 through an external key bar (not shown in the figure) to transmit rotary torque; the locking mechanism 13 axially fixes the pile feeding rod 7 on the rotary body of the rotary-expansion steel pipe pile power head 6 to transmit pressurization and lifting force, and the lower part of the pile feeding rod 7 is connected with the rotary-expansion steel pipe pile 8 to transmit torque, pressurization and lifting force.
The rotary drilling rig for the rotary-expanded steel pipe pile is formed by modifying the traditional rotary drilling rig, wherein the chassis, the mast and the pressurizing device are not improved, the chassis, the mast and the pressurizing device of the traditional rotary drilling rig are directly adopted, and the detailed description is omitted. Only need in this application to the tradition to dig parts such as rig's power head soon and reequip, and increase with the pile follower pole 7 of power head adaptation, through will expand the steel-pipe pile soon from ground hoist and install on pile follower pole 7, expand the steel-pipe pile unit head soon and carry the gyration moment of torsion and add pressure and expand the steel-pipe pile 8 soon through pile follower pole 7, realize expanding the impressing of steel-pipe pile 8 soon, otherwise, expand the steel-pipe pile soon and dig the rig and do and draw out the steel-pipe pile 8 soon from the underground, and unload ground.
Compared with the prior art, the construction process is relatively simple, the efficiency is very high, excessive muck is not generated, concrete does not need to be poured, and larger noise is not generated; the rotary-expansion steel pipe pile is high in strength, small in disturbance to the bottom layer during construction, capable of greatly improving bearing and uplift resistance of the pile due to the fact that the helical blades are arranged on the head of the rotary-expansion steel pipe pile after the steel pipe pile is pressed in, and particularly suitable for building pile and foundation reinforcement.
It should be noted that, in the present embodiment, the pressurizing device employs a hoisting pressurizing device 14, the pressurizing hoisting machine is mounted on the mast 5, two ends of a pressurizing steel wire rope wound on the pressurizing hoisting machine are respectively and fixedly connected with the bottom end and the top end of the power head, the mast 5 is further provided with a slide for tensioning and guiding two ends of the pressurizing steel wire rope, the pressurizing steel wire rope on the pressurizing hoisting machine drives the power head to move up on the mast 5 when the pressurizing hoisting machine rotates forwards, and the pressurizing steel wire rope on the pressurizing hoisting machine drives the power head to move down on the mast 5 when the pressurizing hoisting machine rotates backwards. Of course, the pressurizing device can also adopt a cylinder pressurizing device, but the range of the cylinder pressurizing device is shorter than that of a hoisting pressurizing device.
Referring to fig. 5, it can be understood that, in practical applications, in order to facilitate installation of the rotary-expanding steel pipe pile, hoisting piles 11 may be further disposed on two sides of the rotary-expanding steel pipe pile power head 6. When the rotary-expanding steel pipe pile is installed, the rotary-expanding steel pipe pile 8 is hoisted from the ground and installed on a rotary drilling rig of the rotary-expanding steel pipe pile by utilizing a pile hoisting wire rope 12 on a pile hoisting winch 11, and the hoisting piles are arranged on two sides of a power head of the rotary-expanding steel pipe pile, so that the rotary-expanding steel pipe pile can be hoisted and disassembled quickly and accurately, other hoisting equipment is omitted, and the working efficiency is improved.
Referring to fig. 3 and 4, as a preferred embodiment of the present invention, a pile guard 9 may be further disposed at the bottom of the mast 5, and a guiding through hole coaxial with the pile feeding rod 7 is disposed at the center of the pile guard 9. When the drilling machine works, the rotary-expansion steel pipe pile is matched with and penetrates through the guide through hole, so that the excessive swinging of the rotary-expansion steel pipe pile 8 is limited through the guide of the guide through hole, and the verticality of pile installation is ensured.
It can be understood that the helical blade 10 may be further disposed at the bottom of the rotary-expansion steel pipe pile 8, and the helical blade 10 at the bottom of the rotary-expansion steel pipe pile 8 plays a role in guiding when drilling, so as to increase the speed of the drilling machine. After the pile is pressed into the stratum, the spiral blade has a larger bearing surface, so that the bearing and uplift resistance of the pile can be greatly improved.
It should be noted that, in this embodiment, a specific structure of the locking mechanism is given: the outer peripheral wall of the pile feeding rod is provided with a concave transverse slot 15, the extension direction of the slot 15 is vertical to the axial direction of the pile feeding rod and does not intersect, the locking mechanism 13 comprises a key plate which can be inserted into the slot 15 in a matching way, the bottom of the revolving body of the power head 6 is provided with a channel for the key plate to slide, when the pile feeding rod needs to be locked in position relative to the axial direction of the power head, the key plate is transversely inserted into the slot 15 of the pile feeding rod, and the position of the key plate in the chute is locked through a locking bolt, so that the axial direction of the pile feeding rod can be locked, because the key plate is fixed on the revolving body of the power head, an internal key strip is arranged on the inner wall of the revolving body, when a driving mechanism in the power head drives the revolving body to move, the revolving body transmits power to the pile feeding rod through the internal key strip, the pile feeding rod can only do revolving, but not axial movement, when the pile driving rod 7 needs to be taken down, the pile driving rod 7 can be drawn out from the power head only by pulling out the key plate.
Preferably, slot 15 can set up a plurality ofly to along 7 axial equipartitions in rows of pile sending pole, every row includes a plurality of slots along the pile sending pole circumferencial direction equipartition, thereby can carry out nimble regulation to 7 distances on the ground of pile sending pole, can adapt to the installation of different length rotary expanding steel-pipe pile 8, also can reduce pressure device's operation range requirement simultaneously.
Referring to fig. 3 and 4, an inner key strip (not shown in the figure) is arranged on the inner peripheral wall of the bottom end of the pile feeding rod 7, and an outer key strip 16 matched with the inner key strip is arranged on the outer wall of the top end of the rotary-expanding steel pipe pile 8. When the pile is screwed or pulled out, the rotary-expansion steel pipe pile 8 is inserted into the mounting hole at the bottom of the pile feeding rod 7, and the outer key strips 16 are inserted into the inner key strips, so that the torque transmission can be realized. Of course, the connection between the rotary-expansion steel pipe pile 8 and the bottom end of the pile feeding rod 7 may also adopt other fixing structures such as a chuck, and will not be described herein again.
Referring to fig. 3, 4 and 5, the concrete process of performing pile-screwing operation by using the rotary-expanding steel pipe pile rotary drilling rig according to the embodiment is as follows:
s1: the drilling machine is started to move the rotary-expansion steel pipe pile power head 6 to the top of the mast 5, the mast 5 is axially locked through the locking mechanism, then a pile hanging steel wire rope 12 of a two-side pile hanging winch 11 is lowered, the rotary-expansion steel pipe pile 8 and the pile hanging steel wire rope 12 are connected through a lifting tool, the rotary-expansion steel pipe pile 8 is slowly lifted and placed into the pile protecting device 9, the lifting and lowering of the two-side pile hanging steel wire rope 12 are adjusted to enable the rotary-expansion steel pipe pile 8 to be perpendicular, then the two-side pile hanging steel wire ropes are lifted simultaneously, and the outer key strips of the rotary-expansion steel pipe pile 8 are inserted into the inner key.
S2: and moving the drilling machine to the pile position, driving the rotary-expansion steel pipe pile power head 6 to rotate, driving the rotary-expansion steel pipe pile 8 to rotate through the pile feeding rod 7, applying downward pressure through the pressurizing device, and enabling the rotary-expansion steel pipe pile 8 to enter the ground until the pile depth design requirement is met.
When pile pulling operation is carried out, the rotary-expansion steel pipe pile power head 6 is moved downwards, the inner key groove of the pile feeding rod 7 is connected with the outer key strip of the rotary-expansion steel pipe pile 8, the rotary-expansion steel pipe pile power head 6 is rotated reversely and upward pulling force is exerted until the rotary-expansion steel pipe pile 8 is completely pulled out of the ground, and finally the rotary-expansion steel pipe pile 8 is placed to the ground by the pile hoisting winch 11.
In the work, pile guard 9 that is located under mast 5 restricts the excessive swing of rotary-expanding steel-pipe pile 8, has guaranteed the straightness that hangs down of stake, plays the guide effect when drilling in the helical blade 10 that expands the steel-pipe pile 8 bottom soon, can improve rig speed, and the helical blade has great bearing surface after the stratum of impressing, can improve the bearing and the resistance to plucking ability of stake greatly.
The above examples are merely illustrative of the present invention clearly and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. Nor is it intended to be exhaustive of all embodiments. And obvious changes and modifications may be made without departing from the scope of the present invention.
Claims (9)
1. The utility model provides a rotary drilling rig for rotary-expanding steel pipe piles, which is characterized by comprising:
a chassis, on which a mast is arranged;
the rotary-expanding steel pipe pile power head is installed on the mast and can slide up and down along the mast under the driving of a pressurizing device;
the upper end of the pile feeding rod is fixedly arranged on the power head and is driven by the power head to do rotary motion; the lower end is a rotary-expanding steel pipe pile connecting end.
2. The rotary drilling rig according to claim 1, wherein: the pile feeding rod is matched with an internal key bar of the power head through an external key bar to transmit rotation torque, and the pile feeding rod is axially fixed on a rotation body of the power head through a locking mechanism.
3. The rotary drilling rig according to claim 2, wherein: the peripheral wall of pile feeding rod is provided with a slot, the extending direction of the slot is perpendicular to the axis of the pile feeding rod, and the locking mechanism comprises a key plate which can be inserted into the slot in a matching mode.
4. The rotary drilling rig according to claim 3, wherein: the slots are arranged in rows along the axial direction of the pile feeding rod, and each row comprises a plurality of slots which are uniformly distributed along the circumferential direction of the pile feeding rod.
5. The rotary drilling rig according to claim 1, wherein: and the bottom of the mast is also provided with a pile protector coaxial with the pile feeding rod, and the pile protector is provided with a guide through hole matched with the rotary-expanding steel pipe pile.
6. The rotary drilling rig according to claim 1, wherein: the inner circumferential wall of the bottom end of the pile feeding rod is provided with an inner key strip, and the outer wall of the top end of the rotary-expanding steel pipe pile is provided with an outer key strip matched with the inner key strip.
7. The rotary drilling rig for the rotary-expanding steel pipe pile according to claim 1, characterized in that: and the bottom of the rotary-expanding steel pipe pile is provided with a helical blade.
8. The rotary drilling rig for the rotary-expanding steel pipe pile according to claim 1, characterized in that: the pressurizing device is a hoisting pressurizing device.
9. The rotary drilling rig according to any one of claims 1 to 8, wherein: and a pile hoisting winch for hoisting the rotary-expanding steel pipe pile is further arranged on two sides of the shell of the power head.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921375563.3U CN210946790U (en) | 2019-08-22 | 2019-08-22 | Rotary drilling rig for rotary-expanding steel pipe pile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921375563.3U CN210946790U (en) | 2019-08-22 | 2019-08-22 | Rotary drilling rig for rotary-expanding steel pipe pile |
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| Publication Number | Publication Date |
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| CN210946790U true CN210946790U (en) | 2020-07-07 |
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| CN201921375563.3U Active CN210946790U (en) | 2019-08-22 | 2019-08-22 | Rotary drilling rig for rotary-expanding steel pipe pile |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110359446A (en) * | 2019-08-22 | 2019-10-22 | 山河智能装备股份有限公司 | Revolve expanding steel tube pile rotary drilling rig and its construction method |
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2019
- 2019-08-22 CN CN201921375563.3U patent/CN210946790U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110359446A (en) * | 2019-08-22 | 2019-10-22 | 山河智能装备股份有限公司 | Revolve expanding steel tube pile rotary drilling rig and its construction method |
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