CN215053013U

CN215053013U - Drilling guide frame fixed on inner wall of outer steel casing

Info

Publication number: CN215053013U
Application number: CN202121550501.9U
Authority: CN
Inventors: 王慧荣; 吕忠达; 陈保才; 徐新战; 付连红; 梁亦邱; 王佩
Original assignee: Zhejiang Yitong Special Foundation Engineering Co ltd
Current assignee: Zhejiang Yitong Special Foundation Engineering Co ltd
Priority date: 2021-07-08
Filing date: 2021-07-08
Publication date: 2021-12-07
Anticipated expiration: 2031-07-08

Abstract

The utility model discloses a drilling guide frame fixed on the inner wall of an outer steel casing, which comprises an outer ring and an inner ring, wherein the outer ring and the inner ring form an annular through hole formed by a plurality of guide holes, and a plurality of detachable fixing structures are arranged between the outer ring and the inner ring; the center of the welded drilling guide frame is positioned at the center of a preset pile position of the bored pile, the upper plane is horizontal, namely the wall of each guide hole is vertical, and a support is fixed on the inner ring; the support is used for supporting the support and the seabed bare rock surface; one end of a connecting plate of the detachable fixing structure is hinged with a hole of the inner ring, and the other end of the connecting plate passes through a hole of the outer ring through a bolt of a bolt and a nut to be screwed. The guide frame is adopted for drilling, so that the perpendicularity of the drilled guide hole, namely the perpendicularity of the drilled annular groove, can be guaranteed, and the annular groove with high perpendicularity is provided for the subsequent permanent steel casing embedding.

Description

Drilling guide frame fixed on inner wall of outer steel casing

Technical Field

The utility model relates to a bridge stake foundation construction technical field specifically says to a fix drilling leading truck on outer steel protects a section of thick bamboo inner wall.

Background

Before the construction of the cast-in-situ bored pile, a steel casing is generally required to be sunk in advance, so that the drilling of a drill rod is supported and guided.

With the continuous innovation of bridge pile foundation science and technology, the construction of the water pile foundation can gradually adopt respective construction methods according to respective geological conditions, hydrological conditions and the diameter of the steel casing, if a construction method of a pile foundation pile casing, namely a permanent steel casing, suitable for bare rock is available, a drilling platform is firstly set up, an outer steel casing is sunk by using large-scale hoisting equipment on water and vibrated to a preset depth by using a vibration hammer to block water flow, an annular groove is drilled and cut by using a cylinder of a drill rod of a rotary drilling rig with a cone, the pile foundation steel casing, or an inner steel casing, or a permanent steel casing, is sunk into the annular groove, or vibrated to a preset elevation by using the vibration hammer, or underwater concrete is used to firmly combine the permanent steel casing with rocks on the wall of the annular groove, and then the permanent steel casing is guided to drill a hole, and putting down a reinforcement cage, pouring concrete, and after the pore-forming cast-in-place pile is constructed, pulling out the outer steel casing by using large-scale hoisting equipment.

However, the construction method of the permanent steel casing cannot adapt to the following geological conditions, hydrological conditions and construction environments of the diameter of the steel casing. In particular, the outer diameter of the permanent steel casing is 6.8 meters, so that a casing drill with the large diameter is difficult to find in the prior art, and even if the casing drill with the large diameter is specially produced, the casing drill with the large diameter is difficult to drill in a rock stratum due to overlarge torque and resistance; and the seabed geological condition is special, the rock stratum is bare, the rock face is fluctuated and inclined seriously, and the rock joint phenomenon exists, the surface layer of the rock stratum is lack of a transitional soil layer to centralize the steel casing and the cylinder drill, so the verticality is difficult to guarantee when the cylinder drill enters the rock, moreover, when the cylinder drill drills in the rock stratum, the cylinder drill is easy to drill askew under stress and vibration, the height from a drilling machine on a construction platform to the seabed bare rock is about 50 meters, and the probability of askew drilling is increased by an overlong drill rod about 50 meters. The perpendicularity of the hole, i.e. the perpendicularity of the annular groove, i.e. the perpendicularity of the subsequently embedded permanent steel casing, is difficult to guarantee.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to provide a can guarantee that the straightness that hangs down of the leading hole that bores guarantees promptly that the annular groove that drills out hangs down, and then protects a section of thick bamboo for follow-up permanent steel and buries underground the fixing of providing the annular groove that hangs down straightness high and protect a drilling leading truck on a section of thick bamboo inner wall for outer steel.

The technical solution of the utility model is to provide a drilling guide frame fixed on the inner wall of an outer steel casing, which comprises an outer ring and an inner ring, wherein the outer ring and the inner ring form an annular through hole formed by a plurality of guide holes, and a plurality of detachable fixing structures are arranged between the outer ring and the inner ring; the utility model discloses fix the drilling leading truck on outer steel protects a section of thick bamboo inner wall, still include the polylith and be used for diving constructor underwater welding with the connecting block of connecting outer lane and steel and protecting a section of thick bamboo's inner wall, the center of drilling leading truck after the welding is located the wall of every guiding hole is perpendicular promptly to the center and the upper plane level of the predetermined pile position of pore-forming bored concrete pile, and the inner circle is fixed with the support.

After the structure above adopting, the utility model discloses fix the drilling leading truck on outer steel protects a section of thick bamboo inner wall and has following advantage: in the actual work progress, before drilling, utilize to lift by crane equipment and hang this drilling leading truck to outer steel and protect a section of thick bamboo installation department, the dive constructor with polylith connecting block with the drilling leading truck welding on the inner wall of outer steel protects a section of thick bamboo promptly welded connection piece and outer lane and welded connection piece and outer steel protect the inner wall of a section of thick bamboo, dive the personnel electricity after the drilling cut all connecting blocks and by lifting by crane equipment with this drilling leading truck transfer from outer steel protect a section of thick bamboo. The utility model discloses the guiding hole that relies on a plurality of vertically guiding hole of drilling leading truck to adopt the constitution annular through hole that the section of thick bamboo bored out, the in-process of drilling out the guiding hole, the drilling rod upper end is retrained by the rig on the platform, and the lower extreme is then welded in the drilling leading truck restraint of outer steel casing inner wall, dual restraint and drilling rod are from top to bottom with one heart ensure the vertical drilling of section of thick bamboo brill in the stratum, the problem that does not have major diameter section of thick bamboo brill has been solved, especially a plurality of vertically guiding holes of drilling leading truck, avoided drilling in-process section of thick bamboo brill atress and the askew defect of vibration easy brill, the straightness that hangs down of leading hole is the straightness that hangs down of the ring channel that a plurality of guiding holes constitute has been guaranteed effectively, and then protect a section of thick bamboo for follow-up permanent steel to bury underground and provide the slot that hangs down straightness is high, certainly, the concentricity is also good, and bore guiding hole speed and efficiency and increase substantially.

Further, the utility model discloses fix the guide frame that draws hole drilling on outer steel protects a section of thick bamboo inner wall, still support tight polylith voussoir with support and the naked rock face of seabed including being used for. After the structure is adopted, the firmness, the stability and the guidance quality of the drilling guide frame are better, and the verticality of the guide holes, namely the verticality of the annular groove formed by the guide holes, is further ensured.

Further, the support is a cross-shaped frame welded on the inner ring. After the structure more than adopting, the mechanical properties of support is better, can further improve drilling leading truck's fastness, stability and guidance quality, also is more convenient for find the center.

Furthermore, the detachable fixing structures are uniformly arranged along the circumference of the drilling guide frame. After the structure is adopted, the mechanical property of the drilling guide frame is better, and the firmness, the stability and the guidance quality of the drilling guide frame can be further improved.

Furthermore, one end of a connecting plate of the detachable fixing structure is hinged with a hole of the inner ring, and the other end of the connecting plate is screwed through a bolt of a bolt nut penetrating through a hole of the outer ring; or one end of a connecting plate of the detachable fixing structure is hinged with a hole of the outer ring, and the other end of the connecting plate passes through a hole of the inner ring through a bolt of a bolt nut and is in threaded connection. When utilizing this drilling leading truck drilling construction, when boring to certain removable fixed knot structure department, dive constructor demolishs this removable fixed knot structure, treats this guiding hole and accomplishes the back, is fixed with this removable fixed knot structure spiro union again by dive constructor, bores to predetermined elevation and form complete annular slot until all guiding holes are whole. After the structure more than adopting, provide two kinds of removable structures of difference, according to actual need the connecting plate can inwards rotate or outwards rotate, be convenient for dive constructor according to the construction methods that topography and landform selection is fit for, more be favorable to quick smooth safe construction.

Furthermore, a limiting block for limiting the rotation of the polygonal big end of the bolt is fixed on the outer ring or the inner ring. After the structure is adopted, one bolt and nut is provided with a pair of limiting blocks to limit the polygonal big end of the bolt to rotate, but the bolt can be axially drawn out, so that the disassembly is convenient. When the diving constructor is disassembled and fastened again, the bolt can be unscrewed or screwed by only one hand, so that the fixed structure is simple, labor-saving and quick to disassemble and re-assemble.

Furthermore, the connecting plate is a connecting plate fixed on the upper surface or the lower surface of the drilling guide frame. After the structure above the adoption, a structure of removable fixed knot structure is provided, and the installation is dismantled relatively simply, saves material cost relatively.

Furthermore, the connecting plates are two connecting plates fixed on the upper surface and the lower surface of the drilling guide frame. After the structure more than adopting, another kind of structure of removable fixed knot structure is provided, a connecting plate relatively, and drilling leading truck's fastness, stability and guidance quality are better.

Drawings

Fig. 1 is a schematic diagram of the structure of the drilling guide frame and a plurality of guide holes drilled by a rotary drilling rig on a construction platform.

Fig. 2 is a schematic structural view of the drill guide of the present invention fixed in an outer steel casing and engaged with a barrel drill (the outer steel casing is longitudinally split).

Fig. 3 is a schematic view of a three-dimensional structure of the drill guide frame of the present invention.

Fig. 4 is an enlarged schematic view of a in fig. 3.

Fig. 5 is a schematic perspective view of the drill guide of the present invention.

Fig. 6 is an enlarged structural view of B in fig. 5.

Fig. 7 is a schematic structural diagram of the annular groove formed by a plurality of guiding holes, which is drilled by the rotary drilling rig on the construction platform and is adopted by the drilling guide frame of the utility model.

The structure comprises a cylinder drill 1, a cylinder drill 2, a wedge block 3, a drilling guide frame 4, a drill rod 5, a construction platform 6, a rotary drilling rig 7, a sea surface 8, a construction platform support upright post 9, an outer steel protective cylinder 10, a seabed bare rock surface 11, a connecting block 12, an inner wall 13, an outer ring 14, a guide hole 15, an inner ring 16, a support 17, an annular through hole 18, a detachable fixing structure 19, a bolt and nut 20, a connecting plate 21, a hinge pin 22, a limiting block 23, a polygonal big head of the bolt, 24, a guide hole 25 and an annular groove.

Detailed Description

The following describes the present invention with reference to the accompanying drawings. It should be noted that the description of the embodiments is provided to help understanding the present invention, but the present invention is not limited thereto. Furthermore, the technical features mentioned in the embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

As shown in fig. 1, 2, 3, 4, 5, 6 and 7.

The utility model discloses fix the drilling leading truck on outer steel protects a section of thick bamboo inner wall, including outer lane 13 and inner circle 15, outer lane 13 and inner circle 15 constitute the annular through-hole 17 that is formed by a plurality of guiding holes 14, have a plurality of removable fixed knot to construct 18 between outer lane 13 and the inner circle 15. The utility model discloses fix the drilling leading truck on outer steel protects a section of thick bamboo inner wall, still include the polylith and be used for diving constructor underwater welding in order to connect outer lane 13 and the connecting block 11 of inner wall 12 of outer steel protecting a section of thick bamboo 9, the center of drilling leading truck 3 after the welding is located the center of the predetermined pile position of pore-forming bored concrete pile and goes up the plane level and be the wall of every guiding hole 14 perpendicularly, and inner circle 15 is fixed with support 16. Here, the welding is fixed. It is understood that the cast-in-situ bored pile is a subsequent construction process after the permanent steel casing is sunk and positioned.

Because the diving constructor needs to adjust the centrality of the drill guide frame 3 and the levelness of the upper plane underwater, the length and other dimensions of each connecting block 11 may be different, and generally, the connecting blocks 11 need to be welded on the outer ring 13 of the drill guide frame 3 and the inner wall 12 of the outer steel casing 3 underwater.

The utility model discloses fix the drilling leading truck on outer steel protects a section of thick bamboo inner wall, still support tight polylith voussoir 2 with support 16 and seabed bare rock face 10 including being used for.

The support 16 is preferably a cross-shaped frame welded to the inner ring 15.

The removable fastening structures 18 are preferably arranged evenly along the circumference of the drill guide. One end of the connecting plate 20 of the detachable fixing structure 18 is hinged with a hole of the inner ring 15, and the other end of the connecting plate 20 is screwed through a hole of the outer ring 13 by a bolt of a bolt and nut 19. Alternatively, one end of the connecting plate of the detachable fixing structure is hinged with a hole of the outer ring, and the other end of the connecting plate is screwed through a hole of the inner ring by a bolt of a bolt nut (not shown in the structural diagram).

And a limiting block 22 for limiting the rotation of the polygonal big end 23 of the bolt is fixed on the outer ring 13 or the inner ring. Namely, a pair of limiting blocks 22 are welded on the outer ring 13 or the inner ring at each polygonal big end 23.

The connecting plate 20 is a connecting plate 20 fastened or fixed, i.e. screwed, to the upper or lower surface of the drill guide 3.

The connecting plates are two connecting plates (not shown in the structural diagram) which are fastened or fixed, namely screwed on the upper surface and the lower surface of the drilling guide frame.

The following further develops: each removable fastening structure 18 may be embodied as follows: one end of the connecting plate 20 of the detachable fixing structure 18 is hinged to one hole of the inner ring 15, the hinge pin 21 can be replaced by a bolt, the big end of the bolt is arranged below, the big end can be a ball head and can also be a hexagon, an axial through hole is formed in the inner ring 15, the bolt penetrates through the axial through hole from bottom to top, the through hole at the end of the connecting plate 20 is sleeved on the bolt, a nut is screwed on the external thread at the top of the bolt, the ball head can be gripped by hands because the hinge pin 21 is used, the top nut is screwed as far as possible by a wrench, the fixing effect can be achieved, when the connecting plate 20 needs to avoid the long barrel drill 1, the connecting plate can rotate around the axis of the hinge pin 21. The bolt and the nut 19 can also be fastened by an upper spanner and a lower spanner by utilizing a hexagonal big head, the spanner is used for loosening when the bolt and the nut need to rotate, and the connecting plate 20 also rotates around the axis of the hinge pin 21 when the connecting plate needs to avoid the lengthened barrel drill 1. The outer ring 13 has an axial through hole through which a bolt passes from bottom to top, the through hole at the end of the connecting plate 20 is sleeved on the bolt, and a nut is screwed on the external thread at the top of the bolt, so that the bolt and the nut 19 can be fastened by an upper wrench and a lower wrench. The outer ring 13 is fixed with a limiting block 22 welded with a polygonal big head 23 of a limiting bolt, such as a hexagonal big head, rotating like the bottom of the outer ring 13, and the polygonal big head 23 of each bolt is provided with a pair of limiting blocks 22. The above-mentioned structures at the two ends of the detachable fixing structure 18 can be interchanged: one end of the connecting plate 20 of the detachable fixing structure 18 is hinged with a hole of the inner ring 15, and the other end of the connecting plate 20 is screwed through a hole of the outer ring 13 by a bolt of a bolt and nut 19. Each detachable fixing structure 18 can also be an upper connecting plate and a lower connecting plate which are the same, so that the fixing structure of the inner ring 15 and the outer ring 13 is firmer.

Utilize the utility model discloses fix the general process of drilling leading truck on outer steel protects a section of thick bamboo inner wall does, utilize to lift by crane equipment with outer steel protect a section of thick bamboo 9 sink and shake to the predetermined degree of depth of bare rock with the vibration hammer in order to hinder water like ocean current. And hoisting the prefabricated drilling guide frame 3 to the mounting position in the outer steel casing 9 by adopting hoisting equipment. The diving constructor welds a plurality of connecting blocks 11 on the outer ring 13 of the drilling guide frame 3 and the inner wall 12 of the outer steel casing 9, and makes the center of the drilling guide frame 3 be positioned at the center of the preset pile position of the bored pile, and the upper plane of the drilling guide frame 3 be horizontal, i.e. the wall of each guide hole 14 is vertical. The drilling guide frame 3 is close to the seabed bare rock surface 10, namely the bare rock top surface, and the support 16 is tightly propped against the seabed bare rock surface 10 through the wedge blocks 2. A rotary drilling rig 6 arranged on a construction platform 5 is adopted to align and drill the guide hole 14 through a cylindrical drill 1 on a drill rod 4, and the cylindrical drill 1 and the guide hole 14 can be in clearance fit. The construction platform 5 is above the sea surface 7. When drilling to a certain detachable fixing structure 18, the diving constructor removes the detachable fixing structure 18, and after the lead holes 24 are finished, the diving constructor fixes the detachable fixing structure 18 until all the lead holes 24 are drilled to a preset elevation to form a complete annular groove 25. And (3) electrically cutting all the connecting blocks 11 by divers, and sinking the permanent steel casing into the annular groove 25 to a preset elevation by using lifting equipment after the platform constructor removes the rotary drilling rig 6 and lifts the permanent steel casing away from the drilling guide frame 3. A plurality of construction platform support columns 7 supporting the construction platform 5 are typically embedded in the rock below the bare rock face 10 of the seabed and secured with underwater concrete. Of course, with the development of science and technology, it is common practice for submersible builders to construct underwater.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a fix drilling leading truck on outer steel protects a section of thick bamboo inner wall which characterized in that: the device comprises an outer ring and an inner ring, wherein the outer ring and the inner ring form an annular through hole formed by a plurality of guide holes, and a plurality of detachable fixing structures are arranged between the outer ring and the inner ring; the underwater drilling guide frame is characterized by further comprising a plurality of connecting blocks which are used for underwater welding of diving constructors to connect the outer ring and the inner wall of the steel casing, the center of the welded drilling guide frame is located at the center of a preset pile position of the bored pile, the upper plane of the welded drilling guide frame is horizontal, namely the wall of each guide hole is vertical, and the inner ring is fixed with a support.

2. The drill guide frame fixed to the inner wall of the outer steel casing according to claim 1, wherein: the support is characterized by also comprising a plurality of wedges for tightly supporting the support with the bare rock surface of the seabed.

3. The drill guide fixed to the inner wall of the outer steel casing according to claim 1 or 2, wherein: the support is a cross-shaped frame welded on the inner ring.

4. The drill guide frame fixed to the inner wall of the outer steel casing according to claim 1, wherein: the detachable fixing structures are uniformly arranged along the circumference of the drilling guide frame.

5. The drill guide fixed to the inner wall of the outer steel casing according to claim 1 or 4, wherein: one end of a connecting plate of the detachable fixing structure is hinged with a hole of the inner ring, and the other end of the connecting plate passes through a hole of the outer ring through a bolt of a bolt and a nut to be screwed; or one end of a connecting plate of the detachable fixing structure is hinged with a hole of the outer ring, and the other end of the connecting plate passes through a hole of the inner ring through a bolt of a bolt nut and is in threaded connection.

6. The drill guide frame fixed on the inner wall of the outer steel casing according to claim 5, wherein: and a limiting block for limiting the rotation of the polygonal big end of the bolt is fixed on the outer ring or the inner ring.

7. The drill guide frame fixed on the inner wall of the outer steel casing according to claim 5, wherein: the connecting plate is a connecting plate which is fastened on the upper surface or the lower surface of the drilling guide frame.

8. The drill guide frame fixed on the inner wall of the outer steel casing according to claim 5, wherein: the connecting plates are two connecting plates which are fastened on the upper surface and the lower surface of the drilling guide frame.