CN215053083U

CN215053083U - Be used for cobble geological formation to dig a stake hole soon and prevent support that collapses

Info

Publication number: CN215053083U
Application number: CN202121189935.0U
Authority: CN
Inventors: 夏葵; 黄尚珩; 何晓彤; 冉续; 凌书; 刘启超; 吴思聪; 李�杰
Original assignee: Chengdu Third Construction Engineering Co ltd Of Cdceg
Current assignee: Chengdu Third Construction Engineering Co ltd Of Cdceg
Priority date: 2021-05-28
Filing date: 2021-05-28
Publication date: 2021-12-07
Anticipated expiration: 2031-05-28

Abstract

The utility model relates to a civil engineering technical field, concretely relates to be used for cobble geological formation to dig a stake hole soon and prevent support that collapses. The specific technical scheme is as follows: the utility model provides a be used for pebble geological formation to dig a stake hole collapse prevention support soon, includes cylindricality fretwork support frame, the support frame is constituteed after each summit of tetragonal go-between is fixed each other by a plurality of. The utility model provides an among the prior art problem of hole stability difference of collapsing.

Description

Be used for cobble geological formation to dig a stake hole soon and prevent support that collapses

Technical Field

The utility model relates to a civil engineering technical field, concretely relates to be used for cobble geological formation to dig a stake hole soon and prevent support that collapses.

Background

A large amount of soft soil foundations exist in the southeast coastal region of China, the bearing capacity of the foundation is low, the deformation is large, the requirement of the development of upper buildings with diversified structural forms cannot be met frequently, and the problem of insufficient bearing capacity of the soft soil foundations is solved to a great extent by the occurrence and development of rotary excavating piles. The rotary digging pile has the advantages of high bearing capacity, no soil squeezing, no vibration during construction, low noise, suitability for use in dense urban buildings and the like, is widely applied to modern engineering construction, but still has a plurality of problems in the rotary digging pile construction process, wherein the problem of hole wall stability is particularly prominent. The occurrence of the problem of hole wall stability influences the construction progress to a great extent, increases the construction cost, reduces the bearing capacity of a pile foundation, and seriously restricts the application and development of the rotary excavating pile.

Aiming at the problem of serious hole collapse caused by pebbles, quicksand and gushing water when the hole collapse part is deep, the method not only directly influences the pile forming quality and the construction period, but also poses potential threats to the safety construction and life and property safety of the rotary excavation pile, and forms a bottleneck influencing the pile forming quality and the construction period of the rotary excavation pile of the foundation of the major engineering area and the safety construction.

Therefore, the problem of hole collapse stability is effectively solved, the construction quality is improved, the construction period requirement is met, and the construction cost is reduced, so that the method has important theoretical research significance and also has important practical engineering value.

Disclosure of Invention

Not enough to prior art, the utility model provides a be used for cobble geological formation to dig a stake hole soon and prevent support that collapses has solved the problem of collapsing hole poor stability among the prior art.

In order to achieve the above purpose, the utility model discloses a following technical scheme realizes:

the utility model discloses a be used for cobble geological formation to dig a stake hole soon and prevent support that collapses, support frame including the cylindricality, the support frame is constituteed after each summit reciprocal anchorage of tetragonal go-between by a plurality of.

Preferably, the shape of the support frame is the same as that of the pile hole, and the inner diameter of the support frame is smaller than the diameter of the pile hole.

Preferably, the bottom of support frame is fixed with the connecting strip, the bottom of connecting strip is provided with a plurality of conical heads.

Preferably, a fixing strip is arranged on the inner wall of the support frame along the circumferential direction of the support frame, and the fixing strip penetrates through a diagonal line of the connecting ring.

Preferably, a support frame positioning mechanism is detachably arranged in the support frame and on the fixing strip, and the support frame is detachably arranged on a drill rod of the drilling machine through the positioning mechanism.

Preferably, the positioning mechanism comprises a bearing and a hoop fixed in an inner ring of the bearing through a connecting piece, and a fixing piece matched with the fixing strip is arranged on an outer ring of the bearing.

Preferably, the connecting piece includes the connecting rod and fixes the connecting plate at the connecting rod terminal surface, the connecting plate passes through the bolt fastening in the inner circle of bearing, the other end of connecting rod is fixed on the lateral wall of clamp.

Preferably, the fixing piece comprises a connecting fork obliquely arranged on the bearing outer ring, a limiting rod is rotatably connected to a fork head of the connecting fork through a fixing shaft, and a baffle is fixed to the top end of the fork head of the connecting fork.

Preferably, a torsion spring is arranged between the bottom of the connecting fork head and the bottom of the limiting rod.

Preferably, in use, the fixing strip is clamped between the limiting rod and the connecting fork.

The utility model discloses possess following beneficial effect:

the utility model discloses a fixed clamp on the drilling rod of rig, at the outer fixing bearing of clamp, at the outer fixed connection fork of bearing to and rotate the gag lever post of being connected with the connecting fork, form a contained angle region between gag lever post and the connecting fork, in order to avoid the contained angle grow, can't make the fixed strip card between the contained angle, at the jaw tip fixed stop of connecting fork, avoid the rotation of gag lever post wide-angle. When the supporting frame needs to be installed, the limiting rod and the connecting fork only need to be hung on the fixing strip, and the fixing strip is located in an included angle area between the limiting rod and the connecting fork. Simultaneously, the support frame stretches into the downthehole degree of depth of stake along with the drilling rod to nimble fix the support frame in the position of the downthehole different degree of depth of stake, and then make fixing at cobble, quicksand position that the support frame can be accurate, effectually prevented the stake hole and collapsed.

Drawings

FIG. 1 is a schematic structural view of the support frame after being unfolded;

FIG. 2 is a schematic structural view of a connecting strip arranged at the bottom of the support frame;

FIG. 3 is a schematic view of the positioning mechanism;

FIG. 4 is a view taken along line A-A of FIG. 3;

FIG. 5 is an enlarged view of a portion A of FIG. 4;

FIG. 6 is a schematic view of the structure of the fastening strip after being engaged with the fastening member;

FIG. 7 is a schematic structural view of the support frame after being engaged with the positioning mechanism;

in the figure: the connecting device comprises a connecting ring 1, a connecting strip 2, a conical head 3, a fixing strip 4, a bearing 5, a clamp 6, a connecting rod 7, a connecting plate 8, a connecting fork 9, a limiting rod 10, a baffle plate 11, a torsion spring 12 and a supporting frame 13.

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.

Unless otherwise indicated, the technical means used in the examples are conventional means well known to those skilled in the art.

Referring to fig. 1-6, the utility model discloses a be used for cobble geological formation to dig a stake hole soon and prevent support that collapses, including the support frame 13 of cylindricality, the length of support frame 13 is selected or is tailor according to actual need. The support frame 13 is formed by fixing each vertex of a plurality of quadrilateral connecting rings 1, namely the support frame 13 is formed by fixing a plurality of connecting rings 1 together, the connecting rings 1 are fixed with the connecting rings 1 through four vertexes thereof, the shape of the connecting rings 1 is preferably rhombic, the shape of the support frame 13 is generally cylindrical and is the same as that of a pile hole, and the inner diameter of the support frame is smaller than that of the pile hole, so that the support frame 13 can be inserted into the pile hole. The shape of the support frame 13 is changed according to the shape of the pile hole, and the support frame can be manufactured according to actual needs.

Further, in order to increase the stability of the bottom of the support frame 13 in the pile hole, the bottom of the support frame 13 is fixed with the connecting strip 2, the bottom of the connecting strip 2 is provided with a plurality of conical heads 3, the conical heads 3 can be conical or triangular plates, and the tip parts of the conical heads face downwards.

Because the support frame 13 may not be inserted into the position of the pile hole where the pile hole is easy to collapse due to pebbles, quicksand and gushing water, and the support frame may not be inserted into the pile hole due to the fact that the support frame is likely to collapse in the pile hole after the drilling machine extends out of the pile hole. Therefore, the support frame is fed into the pile hole in the process of re-drilling the pile hole by the drilling machine.

The method specifically comprises the following steps: the inner wall of the support frame 13 is provided with a fixing strip 4 along the circumference of the support frame 13, and the fixing strip 4 passes through the diagonal line of the connecting ring 1. It should be noted that: the fixed strip 4 can be fixed on the inner wall of support frame 13, also can divide into a plurality of sections with fixed strip 4, and every section fixed strip snap-on is on the diagonal in go-between 1, and a plurality of sections fixed strip are located same water flat line, specifically set up according to actual conditions.

Furthermore, a support frame 13 positioning mechanism is detachably arranged in the support frame 13 and on the fixing strip 4, the number of the positioning mechanisms is set according to actual conditions, and the support frame 13 is detachably arranged on a drill rod of the drilling machine through the positioning mechanism. The positioning mechanism comprises a bearing 5 and a hoop 6 fixed in the inner ring of the bearing 5 through a plurality of connecting pieces, and a plurality of fixing pieces matched with the fixing strips 4 are arranged on the outer ring of the bearing 5. Wherein, the connecting piece includes connecting rod 7 and fixes the connecting plate 8 at connecting rod 7 terminal surface, and connecting plate 8 passes through the bolt fastening in the inner circle of bearing 5, and the other end of connecting rod 7 is fixed on the lateral wall of clamp 6. The fixing piece comprises a connecting fork 9 obliquely arranged on the outer ring of the bearing 5, a limiting rod 10 is rotatably connected to the fork head of the connecting fork 9 through a fixing shaft, and a baffle 11 is fixed to the top end of the fork head of the connecting fork 9. It should be noted that: the clamp 6 is fixed on a drill rod of a drilling machine through a bolt, the connecting plate 8 mainly increases the contact area between the connecting rod 7 and the inner ring of the bearing 5, and is convenient to fix the connecting rod in the inner ring of the bearing 5 through the bolt, preferably, the connecting rod 7 can be a telescopic rod, so that the distance between the clamp and the bearing is adjusted, namely, the bearings with different diameters are fixed outside the clamp 5, and then the support frames with different diameters are fixed. The bearing 5 is preferably a sealed bearing to prevent dirt and debris from entering the bearing and damaging it, rendering it unusable. The connecting fork 9 is obliquely and upwards fixed on the side wall of the outer ring of the bearing 5, and the shape formed between the connecting fork 9 and the limiting rod 10 is in a reverse V shape. Meanwhile, in order to prevent the stopper rod 10 from rotating around the fixed shaft and to prevent the space between the yoke 9 and the stopper rod 10 from maintaining the shape of the reverse V, a stopper 11 is fixed to the end of the yoke 9 to limit the rotation angle of the stopper rod 10.

Further, a torsion spring 12 is arranged between the bottom of the fork head of the connecting fork 9 and the bottom of the limiting rod 10, and after the limiting rod 10 is pressed downwards, the limiting rod 10 is reset under the action of the torsion spring 12. Of course, the torsion spring 12 may be disposed between the baffle 11 and the limiting rod 10, and the specific position may be set according to actual conditions.

Use the utility model discloses the time, fix clamp 5 on the drilling rod according to the order, then it is fixed with connecting plate 8 rather than the inner circle to sheathe in bearing 5 and with the bolt, sheathe in support frame 13 at last, make 4 cards of fixed strip between gag lever post 10 and yoke 9, perhaps catch on fixed strip 4 with the contained angle that gag lever post 10 and yoke 9 formed to make support frame 13 along with the rig carry out the in-process of boring again to stake hole bottom, support frame 13 also inserts to the stake hole thereupon. During the rotation of the drilling machine, the support frame 13 is not rotated under the action of the bearing 5. Meanwhile, the position of the support frame 13 in the pile hole can be adjusted by adjusting the depth of the drilling machine extending into the pile hole. When the drilling machine extends out of the pile hole, the fixing strip 4 is directly clamped between the limiting rod 10 and the connecting fork 9, so that when the drilling machine extends out of the pile hole, the fixing strip 4 naturally breaks away from an included angle area formed between the limiting rod 10 and the connecting fork 9. If the connecting ring 1 above or on one side of the fixing strip 4 blocks the limiting rod 10, under the condition that the limiting rod 10 and the fixing shaft can rotate within a certain range, the limiting rod 10 rotates towards the connecting fork 9 until the fixing strip 4 is separated from the position between the limiting rod 10 and the connecting fork 9, and the limiting rod 10 resets under the action of the torsion spring 12.

In the description of the present invention, it is to be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are merely for convenience of description of the present invention, and do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

The above-mentioned embodiments are only intended to describe the preferred embodiments of the present invention, but not to limit the scope of the present invention, and those skilled in the art should also be able to make various modifications and improvements to the technical solution of the present invention without departing from the spirit of the present invention, and all such modifications and improvements are intended to fall within the scope of the present invention as defined in the appended claims.

Claims

1. The utility model provides a be used for cobble geological formation to dig a stake hole collapse prevention support soon which characterized in that: the device comprises a cylindrical support frame (13), wherein the support frame (13) is formed by mutually fixing vertexes of a plurality of quadrilateral connecting rings (1).

2. The collapse prevention support for the pile hole of the rotary excavating pile for the pebble geological formation as claimed in claim 1 is characterized in that: the shape of the support frame (13) is the same as that of the pile hole, and the inner diameter of the support frame is smaller than the aperture of the pile hole.

3. The collapse prevention support for the pile hole of the rotary excavating pile for the pebble geological formation as claimed in claim 1 is characterized in that: the bottom of support frame (13) is fixed with connecting strip (2), the bottom of connecting strip (2) is provided with a plurality of conical head (3).

4. The collapse prevention support for the pile hole of the rotary excavating pile for the pebble geological formation as claimed in claim 1 is characterized in that: the inner wall of the support frame (13) is provided with a fixing strip (4) along the circumferential direction of the support frame (13), and the fixing strip (4) penetrates through the diagonal line of the connecting ring (1).

5. The anti-collapse support for the pile hole of the rotary excavating pile for the pebble geological formation is characterized in that: the positioning mechanism of the support frame (13) is detachably arranged in the support frame (13) on the fixing strip (4), and the support frame (13) is detachably arranged on a drill rod of the drilling machine through the positioning mechanism.

6. The collapse prevention support for the pile hole of the rotary excavating pile for the pebble geological formation as claimed in claim 5 is characterized in that: the positioning mechanism comprises a bearing (5) and a clamp (6) fixed in an inner ring of the bearing (5) through a connecting piece, and a fixing piece matched with the fixing strip (4) is arranged on an outer ring of the bearing (5).

7. The collapse prevention support for the pile hole of the rotary excavating pile for the pebble geological formation as claimed in claim 6, is characterized in that: the connecting piece includes connecting rod (7) and fixes connecting plate (8) at connecting rod (7) terminal surface, connecting plate (8) are fixed in the inner circle of bearing (5) through the bolt, the other end of connecting rod (7) is fixed on the lateral wall of clamp (6).

8. The collapse prevention support for the pile hole of the rotary excavating pile for the pebble geological formation as claimed in claim 6, is characterized in that: the fixing piece comprises a connecting fork (9) which is obliquely arranged on an outer ring of the bearing (5), a limiting rod (10) is rotatably connected to a fork head of the connecting fork (9) through a fixing shaft, and a baffle plate (11) is fixed to the top end of the fork head of the connecting fork (9).

9. The anti-collapse support for the pile hole of the rotary excavating pile for the pebble geological formation as claimed in claim 8, is characterized in that: and a torsion spring (12) is arranged between the bottom of the fork head of the connecting fork (9) and the bottom of the limiting rod (10).

10. The collapse prevention support for the pile hole of the rotary excavating pile for the pebble geological formation is characterized in that: when the connecting fork is used, the fixing strip (4) is clamped between the limiting rod (10) and the connecting fork (9).