CN112942335B

CN112942335B - Synchronous waterproof anti-collapse hole device and method

Info

Publication number: CN112942335B
Application number: CN202110139839.3A
Authority: CN
Inventors: 林良常; 林良瑜; 陈玉明; 何如画; 陈星潘
Original assignee: Yangjiang Yuanfeng Construction Engineering Co ltd
Current assignee: Yangjiang Yuanfeng Construction Engineering Co ltd
Priority date: 2021-02-02
Filing date: 2021-02-02
Publication date: 2022-04-12
Anticipated expiration: 2041-02-02
Also published as: CN112942335A

Abstract

The application relates to a synchronous waterproof hole device and a method of preventing collapsing, and the synchronous waterproof hole device comprises a protective cylinder main body, wherein the protective cylinder main body comprises a plurality of cylinder protecting plates which are spliced with each other, the protective cylinder main body is connected with an opening assembly which is used for opening and contracting the protective cylinder main body, the opening assembly is detachably connected with the protective cylinder main body, and the opening assembly is adjacent to the protective cylinder main body, and a locking assembly is arranged between the protective cylinder plates. This application has the outer wall that makes the staff prevent collapsing the hole device through control and will protect a main part and contradict on the inner wall in stake hole, reduces the emergence probability of the hole phenomenon of collapsing in stake hole, reduces construction cost's effect.

Description

Synchronous waterproof anti-collapse hole device and method

Technical Field

The application relates to the field of building construction, in particular to a synchronous waterproof hole collapse prevention device and method.

Background

Cast-in-place bored concrete pile bearing capacity is higher, in the building work progress, often adopts bored concrete pile as the basis, because bored concrete pile is mostly below the groundwater level, is difficult for reconnaissance in the construction, and the control is difficult, when having subsurface flow or flowing sand to pass through, the phenomenon of hole collapsing often appears, directly influences the construction progress and the construction safety of whole engineering.

Aiming at the problems, a steel pile casing retaining wall is usually added on the basis of the traditional hole forming process, and the steel pile casing is hammered into the soil through a pile driver, so that the hole collapse phenomenon is reduced.

In view of the above-mentioned related technologies, the inventor believes that the defects that the steel casing is difficult to press in and the construction cost is high occur when the pile hole is deep.

Disclosure of Invention

In order to reduce the construction cost, the application provides a synchronous waterproof hole collapse prevention device and method.

In a first aspect, the application provides a synchronous waterproof hole collapse prevention device, which adopts the following technical scheme:

the utility model provides a synchronous waterproof hole device that prevents collapsing, includes a section of thick bamboo main part that protects, protect a main part and include a plurality of mutual concatenations protect the section of thick bamboo board, it is connected with the subassembly that opens that is used for strutting and contracts and protect a main part to protect a main part, open the subassembly and protect and to dismantle between the section of thick bamboo main part and be connected, adjacent protect and be provided with locking Assembly between the section of thick bamboo board.

Through adopting above-mentioned technical scheme, make the staff place the hole device that prevents collapsing of this application in to the stake hole, at first shrink through opening the subassembly and protecting a section of thick bamboo board that will splice each other, the external diameter that makes and protect a main part is less than the internal diameter in stake hole, make and prevent collapsing the hole device and be convenient for place in the stake hole, then reach the assigned position after, the staff opens subassembly control through control and protects a main part and open, the outer wall that makes and protects a main part is contradicted on the inner wall in stake hole, locking Assembly makes and protects a main part and continuously keep the state with stake hole inner wall butt, then open subassembly and protect a main part separation, realize the support to the stake hole.

Preferably, the opening assembly comprises a driving assembly and a scissor mechanism, one end of the scissor mechanism is connected with the driving assembly, and the other end of the scissor mechanism is connected with the casing main body.

Through adopting above-mentioned technical scheme, make the staff realize the control to cutting the fork mechanism through the motion of control drive assembly, and then make and cut fork mechanism and drive and protect a main part and produce the displacement, make each of protecting a main part protect a barrel interval between each other and enlarge or reduce for the external diameter of protecting a main part is convenient for adjust convenient to use.

Preferably, the driving assembly comprises a fixed end and a movable end, and the movable end makes reciprocating linear motion towards the fixed end.

By adopting the technical scheme, in the process that the movable end makes reciprocating motion towards the fixed end, the movable end drives the scissor mechanism to make reciprocating motion, and the outer diameter of the pile casing main body is adjusted.

Preferably, the driving assembly further comprises a supporting rod, the fixed end is located at one end of the supporting rod, the movable end is located at one end of the supporting rod, which is far away from the fixed end, the movable end comprises a hinged portion and a driving portion, the hinged portion is rotatably connected with the driving portion, a gap is reserved between the hinged portion and the supporting rod, and the driving portion is in threaded connection with the supporting rod.

Through adopting above-mentioned technical scheme, make the staff through fixed support rod, then drive the drive division and rotate and can realize that the expansion end carries out reciprocating linear motion's action towards the stiff end, the drive division is around bracing piece pivoted in-process, articulated portion because of with the drive division rotate be connected and with the bracing piece between leave the clearance, articulated portion is difficult to rotate along with the rotation of drive division, stably drives the expansion link motion.

Preferably, cut fork mechanism and include articulated movable rod and dead lever each other, protect a section of thick bamboo board and can dismantle towards one side of cutting fork mechanism and be connected with the connecting plate, the one end and the stiff end of dead lever are articulated and the other end and connecting plate sliding connection, the one end and the articulated and other end and the connecting plate of movable end of movable rod are articulated.

Through adopting above-mentioned technical scheme, make the expansion end drive the movable rod motion, because the movable rod is articulated with the dead lever for cut fork mechanism drive and protect a section of thick bamboo board and produce the displacement, change the clearance between protecting a section of thick bamboo board, increase or reduce the external diameter of protecting a section of thick bamboo main part, the setting of connecting plate makes things convenient for drive assembly to drive and cuts fork mechanism motion, simultaneously, makes things convenient for cut fork mechanism to reach utmost point position back, and the connecting plate is detached and is protected a section of thick bamboo board, makes the subassembly that opens conveniently break away from and protects a section of thick bamboo main part.

Preferably, the connecting plate is embedded into the cylinder protecting plate, and a clamping mechanism is arranged between the connecting plate and the cylinder protecting plate.

Through adopting above-mentioned technical scheme, make through block mechanism can dismantle between connecting plate and the pile casing board and be connected, it is convenient to dismantle, and after the scissors mechanism of being convenient for reachd extreme position, the connecting plate was detached and is protected the pile casing board, and it is comparatively convenient that the subassembly breaks away from pile casing main part to open.

Preferably, the connecting plate comprises a sliding groove, one end of the fixing rod, which is far away from the fixing end, is a sliding end, and the sliding end extends into the sliding groove and slides along the sliding groove; the clamping mechanism comprises a clamping portion located in the sliding groove, a clamping groove communicated with each other is formed between the connecting plate and the cylinder protecting plate, the clamping groove comprises a first clamping groove located in the connecting plate and a second clamping groove located in the cylinder protecting plate, the clamping portion is hinged to the connecting plate, the clamping portion comprises an embedding protrusion embedded into the second clamping groove, and the sliding end drives the clamping portion to rotate in the sliding process and enables the embedding protrusion to be far away from or extend into the second clamping groove.

Through adopting above-mentioned technical scheme, make the staff can realize the block action of block mechanism through the motion of control slip end, under the normality, the gomphosis arch embedding second block inslot of block portion makes and is connected between connecting plate and the protective barrel board, after opening the subassembly and strut the protective barrel board, the slip end removes to extreme position, and at the in-process that is close to extreme position, the slip end contradicts with block portion, drive block portion and rotate, block portion pivoted in-process makes the gomphosis arch keep away from second block groove, and then makes connecting plate and protective barrel board separation.

Preferably, a flexible baffle is connected between two adjacent cylinder protecting plates.

By adopting the technical scheme, after the pile casing plates are opened, the flexible blocking pieces between the two adjacent pile casing plates are used for blocking underground water in the pile hole, so that the underground water is not easy to penetrate through the gap between the two adjacent pile casing plates and enter the pile casing main body.

Preferably, the locking assembly comprises two mutually-hinged locking rods and one end of each locking rod, which is far away from each other, is hinged to the cylindrical protection plate, a limiting protrusion and a limiting elastic part are arranged at the hinged position of the cylindrical protection plate and the locking rods, one end of the limiting elastic part is embedded into the cylindrical protection plate, the hinged position of the locking rods and the cylindrical protection plate is located between the limiting protrusion and the limiting elastic part, and the distance between the limiting protrusion and the limiting elastic part is equal to the width of the locking rods.

By adopting the technical scheme, when a worker puts the anti-collapse hole device down along the inner wall of the pile hole, the outer diameter of the pile casing main body is smaller than the inner wall of the pile hole, the expansion assembly is not expanded to the maximum value, the included angle between the two mutually hinged locking rods is smaller than 180 degrees, so that the anti-collapse hole device can smoothly move in the pile hole, when the anti-collapse hole device reaches the designated position of the pile hole, the expansion assembly starts to work, the gap between the two adjacent pile casing plates is increased, the included angle between the two hinged locking rods gradually moves towards an angle of 180 degrees, finally the two locking rods are in a horizontal state, and after the locking rods are in a horizontal state, the locking rods are far away from the limiting elastic part, the limiting elastic part pops out to limit the locking rods between the limiting bulges and the limiting elastic part, the locking rods are limited and cannot rotate, so that the pile casing main body keeps the maximum outer diameter, and the pile casing main body is not easy to be reduced by external force, always against the inner wall of the pile hole, and the protection effect is better.

On the other hand, the application provides a synchronous waterproof hole collapse prevention method, adopts following technical scheme:

the utility model provides a synchronous waterproof hole method of preventing collapsing, at first carries out the drilling process to the preset position, forms the stake hole, then, adopts the gallows will prevent collapsing the hole device and transfer to the minimum preset position in the stake hole to the messenger opens the subassembly and will protect a main part and strut to the maximum diameter, protects a main part outer wall and the laminating of stake downthehole wall and shifts out in step and open the subassembly, repeats above-mentioned process, upwards executes in proper order along stake hole bottom, makes and protects a main part and the whole laminating in preset position of stake downthehole wall.

Through adopting above-mentioned technical scheme, make the staff prevent collapsing the hole device through control and will protect the outer wall of a main part and contradict on the inner wall in stake hole, reduce the emergence probability of stake hole collapse phenomenon, reduce construction cost.

In summary, the present application includes at least one of the following beneficial technical effects:

1. when a worker places the anti-collapse hole device into a pile hole, the worker controls the pile casing main body to open by controlling the opening assembly, so that the outer wall of the pile casing main body is abutted against the inner wall of the pile hole, the locking assembly enables the pile casing main body to be continuously kept in a state of being abutted against the inner wall of the pile hole, and then the opening assembly is separated from the pile casing main body to support the pile hole;

2. the connecting plate and the cylinder protecting plate are detachably connected through the clamping mechanism, the dismounting is convenient, the connecting plate is detached from the cylinder protecting plate after the scissor fork mechanism reaches the extreme position, and the opening assembly is conveniently separated from the cylinder protecting main body;

3. the outer wall that makes the staff prevent collapsing the hole device through control will protect a section of thick bamboo main part is contradicted on the inner wall in stake hole, reduces the emergence probability of stake hole collapse phenomenon, reduces construction cost.

Drawings

Fig. 1 is a schematic overall structure diagram of a first embodiment of the present application.

Fig. 2 is a schematic view of a connection relationship between a scissor mechanism and a cylinder guard plate according to an embodiment of the present application.

Fig. 3 is a partially enlarged schematic view at a in fig. 1.

Description of reference numerals: 1. a casing main body; 2. a cylinder protecting plate; 21. a fitting groove; 3. an opening assembly; 4. a locking assembly; 5. a drive assembly; 6. a scissor mechanism; 51. a fixed end; 52. a movable end; 53. a support bar; 521. a hinge portion; 522. a drive section; 61. a movable rod; 62. fixing the rod; 621. a sliding end; 7. a connecting plate; 8. a clamping mechanism; 71. a sliding groove; 72. a hinge slot; 81. a fitting projection; 82. a clamping groove; 821. a first engaging groove; 822. a second engaging groove; 9. a flexible baffle sheet; 41. a locking lever; 42. a limiting bulge; 43. spacing elastic component.

Detailed Description

The present application is described in further detail below with reference to figures 1-3.

The embodiment of the application discloses synchronous waterproof hole device that prevents collapsing. Referring to fig. 1, the anti-collapse hole device comprises a casing main body 1 and an opening assembly 3 positioned in the center of the casing main body 1, wherein the opening assembly 3 is detachably connected with the casing main body 1.

The pile casing main body 1 is cylindrical, the pile casing main body 1 comprises a plurality of pile casing plates 2 which are spliced with one another, the flexible blocking pieces 9 connected between the adjacent pile casing plates 2 and the locking assemblies 4 arranged between the adjacent pile casing plates 2 are arranged, and workers can increase the number of the locking assemblies 4 according to the size of a pile hole and the requirement of pile forming quality. In order to facilitate the understanding of the scheme, the gap between the adjacent cylinder protecting plates 2 is larger in the figure, and the gap between the two adjacent cylinder protecting plates 2 is smaller in actual production.

As shown in fig. 1, the opening assembly 3 includes a driving assembly 5, a scissors mechanism 6 and a connecting plate 7, the connecting plate 7 is embedded into one side of the cylinder protecting plate 2 facing the scissors mechanism 6, and two ends of the scissors mechanism 6 are respectively connected with the connecting plate 7 and the driving assembly 5.

As can be seen from fig. 1 and 2, the driving assembly 5 includes a supporting rod 53, a fixed end 51 and a movable end 52, the fixed end 51 is fixed at the bottom of the supporting rod 53, the movable end 52 is sleeved on the supporting rod 53, and the movable end 52 reciprocates toward the fixed end 51. The movable end 52 includes a driving portion 522 and a hinge portion 521 from top to bottom, the hinge portion 521 is rotatably connected to the driving portion 522, a gap is left between the hinge portion 521 and the supporting rod 53, and the driving portion 522 is in threaded connection with the supporting rod 53. In the work progress, the staff at first erects the drive arrangement who prevents hole device that collapses, and the gallows is selected to this embodiment, and the gallows is provided with down puts the pole and receives motor drive's sleeve pipe, and the sleeve pipe cover is established under on putting the pole, puts down pole and bracing piece 53 fixed connection, sleeve pipe and expansion end 52 fixed connection, and the sleeve pipe drives expansion end 52 and continuously rotates and follow expansion end 52 reciprocating drive. The hanger, lowering rod and casing are not shown in the figure.

As can be seen from fig. 1 and 2, the scissors mechanism 6 includes a movable rod 61 and a fixed rod 62 hinged to each other, one end of the fixed rod 62 is hinged to the fixed end 51, and the other end is slidably connected to the connecting plate 7, one end of the movable rod 61 is hinged to the movable end 52, and the other end is hinged to the connecting plate 7.

As shown in fig. 2, a side of the casing plate 2 facing the opening member 3 is provided with a fitting groove 21, the connecting plate 7 is fitted into the fitting groove 21, the connecting plate 7 is provided with a sliding groove 71 and a hinge groove 72, an end of the fixed rod 62 away from the fixed end 51 is a sliding end 621, the sliding end 621 extends into the sliding groove 71 and slides along the sliding groove 71, and the movable rod 61 is inserted into the hinge groove 72. The connecting plate 7 is connected with the tube protecting plate 2 through the clamping mechanism 8, the clamping grooves 82 communicated with each other are arranged between the connecting plate 7 and the tube protecting plate, each clamping groove 82 comprises a first clamping groove 82182 positioned in the connecting plate 7 and a second clamping groove 82282 positioned in the tube protecting plate 2, each clamping mechanism 8 comprises a clamping portion positioned in the sliding groove 71, each clamping portion is hinged to the connecting plate 7 and comprises a chimeric protrusion 81 embedded in the second clamping groove 82282, the sliding end 621 drives the clamping portions to rotate in the sliding process and enables the chimeric protrusions 81 to be far away from or extend into the second clamping grooves 82282, when the connecting plate 7 is connected with the tube protecting plate 2, the chimeric protrusions 81 of the clamping portions penetrate through the first clamping grooves 82182 and are embedded in the second clamping grooves 82282, and when the connecting plate 7 is separated from the tube protecting plate 2, the chimeric protrusions 81 are far away from the second clamping grooves 82282 and are positioned in the first clamping grooves 82182.

As shown in fig. 3, the locking assembly 4 includes two locking rods 41 hinged to each other, and one end of each locking rod 41, which is far away from each other, is hinged to the casing guard 2, a limiting protrusion 42 and a limiting elastic member 43 are disposed at the hinged position of the casing guard 2 and the locking rod 41, and one end of the limiting elastic member 43 is embedded in the casing guard 2; the hinged part of the locking rod 41 and the pile casing plate 2 is positioned between the limiting bulge 42 and the limiting elastic piece 43, and the distance between the limiting bulge 42 and the limiting elastic piece 43 is equal to the width of the locking rod 41; when the included angle between the two locking rods 41 is smaller than 180 degrees, the locking rods 41 are pressed on the limiting elastic piece 43; when the two locking rods 41 are in a horizontal state, the expansion assembly 3 is expanded to the maximum, the outer diameter of the casing main body 1 is the maximum, the locking rods 41 are located between the limiting protrusions 42 and the limiting elastic pieces 43, and the limiting protrusions 42 and the limiting elastic pieces 43 are located on two sides of the locking rods 41 in the vertical direction respectively.

The embodiment of the application discloses a synchronous waterproof hole method of preventing collapsing, at first carry out the drilling process to the preset position, form the stake hole, then, adopt the gallows will prevent collapsing the hole device and transfer to the downthehole minimum preset position of stake, and make and open subassembly 3 and prop a main part 1 and open to the maximum diameter, protect a main part 1 outer wall and the laminating of stake downthehole wall and shift out in step and open subassembly 3, repeat above-mentioned process, upwards do in proper order along stake hole bottom, make and protect a main part 1 and the whole laminating of preset position of stake downthehole wall.

The implementation principle of the synchronous waterproof hole collapse prevention device and method provided by the embodiment of the application is as follows:

firstly, before drilling, an operator surveys the groundwater flow position and the quicksand position in a pile hole, after the position is determined, a hanger is erected in a conventional hanger mode, the hanger is provided with a lower rod which reciprocates along the vertical direction and a sleeve which is sleeved on the lower rod and driven by a motor, then a support rod 53 is fixed with the lower rod, a movable end 52 is fixedly connected with the sleeve, at the moment, the hole collapse prevention device of the embodiment is connected with the hanger, when the hole collapse prevention device is lowered, firstly, the sleeve drives the movable end 52 to move upwards along the vertical direction, an opening assembly 3 drives a pile casing main body 1 to contract, the outer diameter of the pile casing main body 1 is smaller than the inner diameter of the pile hole, at the moment, a connecting plate 7 is embedded into an embedding groove 21, an embedding bulge 81 of a clamping part is embedded into a second clamping groove 82282, and the connecting plate 7 is connected with a pile casing plate 2; then, the anti-collapse hole device is lowered, when the anti-collapse hole device reaches a preset position at the bottommost part of the pile hole, the opening assembly 3 starts to open, the motor drives the driving part 522 to rotate, the movable end 52 moves towards the fixed end 51, at the moment, the sliding end 621 moves towards the clamping part, and the pile casing main body 1 is opened; when the sliding end 621 moves to the limit position, and in the process of approaching to the limit position, the sliding end 621 abuts against the clamping portion to drive the clamping portion to rotate, in the process of rotating the clamping portion, the embedding protrusion 81 is far away from the second clamping groove 82282, at this time, an included angle between the two locking rods 41 hinged to each other is in a 180-degree horizontal state, the locking rod 41 is far away from the limiting elastic piece 43, the limiting elastic piece 43 pops up to limit the locking rod 41 between the limiting protrusion 42 and the limiting elastic piece 43, and the locking rod 41 is limited and cannot rotate, so that the maximum outer diameter of the pile casing main body 1 is kept; then, the movable end 52 moves towards the direction far away from the fixed end 51 to drive the opening assembly 3 to contract, as the embedded protrusion 81 between the connecting plate 7 and the pile casing plate 2 is positioned in the first clamping groove 82182, the shear fork mechanism 6 drives the connecting plate 7 to be separated from the pile casing plate 2, the outer wall of the pile casing main body 1 is abutted against the inner wall of the pile hole to realize the support of the preset position, and the flexible blocking piece 9 between two adjacent pile casing plates 2 is combined with the pile casing plates 2 to realize the water prevention of the preset position of the pile hole, so that water or quicksand is not easy to pass through the pile casing main body 1; then drive by drive arrangement and open subassembly 3 and shift out the stake hole and will protect a main part 1 and open subassembly 3 installation and repeated transfer action, other preset positions in the stake hole are blocked and are supported.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides a synchronous waterproof hole device that prevents collapsing which characterized in that: the protective cylinder comprises a protective cylinder main body (1), wherein the protective cylinder main body (1) comprises a plurality of protective cylinder plates (2) which are spliced with each other, the protective cylinder main body (1) is connected with an opening component (3) which is used for opening and contracting the protective cylinder main body (1), the opening component (3) is detachably connected with the protective cylinder main body (1), and a locking component (4) is arranged between every two adjacent protective cylinder plates (2);

the opening assembly (3) comprises a driving assembly (5) and a shearing fork mechanism (6), one end of the shearing fork mechanism (6) is connected with the driving assembly (5), and the other end of the shearing fork mechanism (6) is connected with the casing main body (1);

the driving assembly (5) comprises a fixed end (51) and a movable end (52), and the movable end (52) moves towards the fixed end (51) in a reciprocating linear mode;

the driving assembly (5) further comprises a supporting rod (53), the fixed end (51) is located at one end of the supporting rod (53), the movable end (52) is located at one end, far away from the fixed end (51), of the supporting rod (53), the movable end (52) comprises a hinged portion (521) and a driving portion (522), the hinged portion (521) is rotatably connected with the driving portion (522), a gap is reserved between the hinged portion (521) and the supporting rod (53), and the driving portion (522) is in threaded connection with the supporting rod (53);

the scissor mechanism (6) comprises a movable rod (61) and a fixed rod (62) which are hinged with each other, one side, facing the scissor mechanism (6), of the cylinder protecting plate (2) is detachably connected with a connecting plate (7), one end of the fixed rod (62) is hinged with the fixed end (51), the other end of the fixed rod is connected with the connecting plate (7) in a sliding mode, one end of the movable rod (61) is hinged with the movable end (52), and the other end of the movable rod is hinged with the connecting plate (7);

the connecting plate (7) is embedded into the cylinder protecting plate (2), and a clamping mechanism (8) is arranged between the connecting plate (7) and the cylinder protecting plate (2);

the connecting plate (7) comprises a sliding groove (71), one end of the fixing rod (62) far away from the fixing end (51) is a sliding end (621), and the sliding end (621) extends into the sliding groove (71) and slides along the sliding groove (71); the clamping mechanism (8) comprises a clamping portion located in the sliding groove (71), clamping grooves (82) which are communicated with each other are formed between the connecting plate (7) and the cylinder protecting plate (2), each clamping groove (82) comprises a first clamping groove (821) (82) located in the connecting plate (7) and a second clamping groove (822) (82) located in the cylinder protecting plate (2), the clamping portion is hinged to the connecting plate (7), each clamping portion comprises a chimeric protrusion (81) used for being embedded into the corresponding second clamping groove (822) (82), and the sliding end (621) drives the clamping portion to rotate and enables the chimeric protrusion (81) to be far away from or extend into the corresponding second clamping groove (822) (82) in the sliding process.

2. The synchronous waterproof hole collapse prevention device of claim 1, wherein: a flexible baffle (9) is connected between two adjacent cylinder protecting plates (2).

3. The synchronous waterproof hole collapse prevention device of claim 1, wherein: locking Assembly (4) include two each other articulated check lock lever (41) and two check lock lever (41) keep away from each other one end with protect barrel panel (2) articulated, protect barrel panel (2) and check lock lever (41) articulated department and be provided with spacing arch (42) and spacing elastic component (43), the one end embedding of spacing elastic component (43) protects in barrel panel (2), check lock lever (41) and protect the articulated department of barrel panel (2) to be located between spacing arch (42) and spacing elastic component (43) and spacing arch (42) and spacing elastic component (43) between the distance equals the width of check lock lever (41).

4. A simultaneous waterproof hole collapse prevention method using the simultaneous waterproof hole collapse prevention device according to any one of claims 1 to 3, characterized by: at first to predetermineeing the position and carry out the drilling process, form the stake hole, then, adopt the gallows to prevent that the hole device that collapses transfers to the downthehole minimum of stake preset the position to the messenger opens a subassembly (3) and struts to the maximum diameter with protecting a main part (1), protects a main part (1) outer wall and the laminating of stake downthehole wall and shifts out in step and open subassembly (3), repeats above-mentioned process, upwards executes in proper order along stake hole bottom, makes and protects a main part (1) and the whole laminating of preset position of stake downthehole wall.