阅读说明：本技术 一种用于钻孔灌注桩的桩坑掘进装置及其使用方法 (Pile pit tunneling device for cast-in-situ bored pile and using method thereof ) 是由 林军 侯新宇 桑海涛 嵇晓雷 缪云 于 2021-01-05 设计创作，主要内容包括：本发明公开了一种用于钻孔灌注桩的桩坑掘进装置及其使用方法,属于桩基施工技术领域。装置包括底座,其包括位于底座一端的安装部及位于底座另一端开口的框型部；掘进单元,其设于安装部上,掘进单元穿过框型部开口处实现钻孔掘进动作；以及盖体,其盖合于框型部上方,闭合框型部上方空间,掘进单元穿过盖体。本发明的装置通过盖体结构盖合与框型部上,封闭了掘进工作区域,进而避免了泥浆飞溅的情况发生,优化了施工环境,降低了清理成本,提高工作效率,具有结构简单、设计合理、易于制造的优点。(The invention discloses a pile pit tunneling device for a cast-in-situ bored pile and a using method thereof, and belongs to the technical field of pile foundation construction. The device comprises a base, a connecting rod and a clamping device, wherein the base comprises an installation part positioned at one end of the base and a frame-shaped part positioned at an opening at the other end of the base; the tunneling unit is arranged on the mounting part and penetrates through the opening of the frame-shaped part to realize drilling and tunneling actions; and a cover body which covers the upper part of the frame-shaped part, closes the space above the frame-shaped part, and the tunneling unit passes through the cover body. The device disclosed by the invention covers the frame-shaped part through the cover body structure, so that a tunneling working area is sealed, the slurry splashing condition is further avoided, the construction environment is optimized, the cleaning cost is reduced, the working efficiency is improved, and the device has the advantages of simple structure, reasonable design and easiness in manufacturing.)

1. A pile pit driving apparatus for a cast-in-situ bored pile, comprising:

the base comprises an installation part positioned at one end of the base and a frame-shaped part positioned at an opening at the other end of the base;

the tunneling unit is arranged on the mounting part and penetrates through the opening of the frame-shaped part to realize drilling and tunneling actions; and the number of the first and second groups,

and the cover body covers the upper part of the frame-shaped part, closes the space above the frame-shaped part, and the tunneling unit penetrates through the cover body.

2. A pile pit driving apparatus for a bored pile according to claim 1, wherein: the heading unit includes:

the mounting frame is fixedly connected to the top surface of the mounting part;

the longitudinal driving mechanism is arranged at the top of the mounting rack and provides a driving force for lifting along the longitudinal direction;

the adjusting plate is horizontally arranged and is in transmission connection with the longitudinal driving mechanism, and the adjusting plate is positioned above the frame-shaped part;

the drilling mechanism comprises a driving motor and a drill bit end, the driving motor is arranged on the adjusting plate, the drill bit end penetrates through the adjusting plate and extends to the opening of the frame-shaped portion, and the drill bit end is in transmission connection with the driving motor to perform drilling action.

3. A pile pit driving apparatus for a cast-in-situ bored pile according to claim 2, wherein the mounting frame comprises:

a horizontal plate which is horizontally arranged above the mounting part;

two vertical plates are vertically arranged, one end of each vertical plate is fixedly connected with the top surface of the mounting part, and the other end of each vertical plate is fixedly connected with the end part of the transverse plate;

and one end of the reinforcing plate is fixedly connected with the top surface of the mounting part, and the other end of the reinforcing plate is fixedly connected with the middle part of one side surface of the transverse plate, which is far away from the frame-shaped part.

4. A pile pit driving apparatus for a bored pile according to claim 3, wherein: the adjusting plate is arranged between the two vertical plates and is in sliding connection with the two vertical plates.

5. A pile pit driving apparatus for a bored pile according to claim 4, wherein: one side of the frame-shaped part is provided with an opening, and the edge sealing connecting piece is movably connected to the opening side of the frame-shaped part.

6. A pile pit driving apparatus for a bored pile according to claim 5, wherein: the cover body is composed of a mud-blocking top plate and four mud-blocking side plates; clamping grooves are formed in the positions, corresponding to the mud baffle side plates, of the top surfaces of the frame-shaped parts and the edge sealing connecting pieces, and the shapes of the clamping grooves are matched with the shapes of the bottoms of the mud baffle side plates; the bottoms of the four mud blocking side plates are embedded into the clamping grooves.

7. A pile pit driving apparatus for a bored pile according to claim 6, wherein: the mud blocking side plate correspondingly embedded into the top of the edge sealing connecting piece is a mud blocking front side plate, and the mud blocking front side plate is detachably connected with the side face of the adjacent mud blocking top plate and the side faces of other mud blocking side plates through magnetic sheets.

8. A pile pit driving apparatus for a bored pile according to claim 7, wherein: the clamping block is arranged on one side of the top surface of the clamping groove and is detachably connected with the surface of the base through a bolt;

a limiting bulge is formed on the surface, close to the mud blocking front side plate, of the clamping block arranged at the top of the edge sealing connecting piece, and a limiting groove is formed in the corresponding position of the mud blocking front side plate.

9. A pile pit driving apparatus for a bored pile according to claim 8, wherein: the inside of fender mud roof and fender mud curb plate all is equipped with the puigging, and it has sound-proof material to fill in the puigging.

10. A method for using a pile pit driving device for a cast-in-situ bored pile, which is based on the pile pit driving device for a cast-in-situ bored pile of claim 9, and comprises the following steps:

firstly, positioning, namely taking down a cover body, and arranging an opening of a frame part of a base of a pile pit tunneling device for drilling a cast-in-place pile corresponding to a position to be drilled;

drilling preparation, namely installing a cover body, embedding each mud blocking side plate into a corresponding clamping groove, and connecting the clamping block to a corresponding position on the top surface of the base through a bolt;

thirdly, drilling, namely starting the tunneling unit to drill;

discharging slurry, namely taking down the clamping block positioned on the top surface of the edge sealing connecting piece, taking down the mud blocking front side plate, taking down the edge sealing connecting piece, discharging slurry in the cover body and the frame-shaped part, and then installing and resetting the edge sealing connecting piece, the mud blocking front side plate and the clamping block;

and fifthly, repeating the third step and the fourth step until the drilling and tunneling are finished.

Technical Field

The invention belongs to the technical field of pile foundation construction, and particularly relates to a pile pit tunneling device for a cast-in-situ bored pile and a using method thereof.

Background

In the construction process of the cast-in-situ bored pile in civil engineering, the pile pit is widely applied.

The pile pit needs to excavate the foundation ditch that is used for concrete placement before the construction, and the foundation ditch is at the in-process of tunnelling, and the most common problem is because the existence of mud in the foundation ditch, carries out the process of tunnelling at the drill bit, and mud can splash everywhere to unrestrained to ground or personnel's clothing surface, and because construction cycle is longer, cause very big environmental pollution easily, and also can lead to the construction site dirty and messy poor, influence constructor's operational environment and work efficiency.

Through retrieval, the Chinese patent publication number: CN 209761330U; the publication date is as follows: 12 months and 10 days in 2019; the pile pit tunneling device comprises a fixing rod with a hollow interior, wherein one end of the fixing rod is rotatably connected with a drill rod, the other end of the drill rod is horizontally fixed with a support table, tooth grooves are uniformly distributed on the outer side wall of the drill rod along the length direction of the drill rod, the drill rod is hollow, a through hole communicated with the drill rod is formed in the middle of the support table, a slurry pumping pipe is rotatably connected to the through hole in the drill rod, and the slurry pumping pipe penetrates through the drill rod and extends out of the fixing rod; the drilling rod overcoat is equipped with the drill bit, be equipped with a plurality of rings ring gear from last to down in the axial of drill bit, the bottom equipartition of drill bit has a plurality of to bore the tooth. Although the device of this application can alleviate the problem that mud splashes to a certain extent, the device structure is complicated, and manufacturing cost is high and application scope is limited.

Disclosure of Invention

In order to solve at least one of the above technical problems, according to an aspect of the present invention, there is provided a pile pit driving apparatus for bored piles, the apparatus including:

the base comprises an installation part positioned at one end of the base and a frame-shaped part positioned at an opening at the other end of the base;

the tunneling unit is arranged on the mounting part and penetrates through the opening of the frame-shaped part to realize drilling and tunneling actions; and the number of the first and second groups,

and the cover body covers the upper part of the frame-shaped part, closes the space above the frame-shaped part, and the tunneling unit penetrates through the cover body.

According to the pile pit excavation device for cast-in-situ bored piles according to the embodiment of the present invention, optionally, the excavation unit includes:

the mounting frame is fixedly connected to the top surface of the mounting part;

the longitudinal driving mechanism is arranged at the top of the mounting rack and provides a driving force for lifting along the longitudinal direction;

the adjusting plate is horizontally arranged and is in transmission connection with the longitudinal driving mechanism, and the adjusting plate is positioned above the frame-shaped part;

the drilling mechanism comprises a driving motor and a drill bit end, the driving motor is arranged on the adjusting plate, the drill bit end penetrates through the adjusting plate and extends to the opening of the frame-shaped portion, and the drill bit end is in transmission connection with the driving motor to perform drilling action.

According to the pile pit excavation device for the cast-in-situ bored pile of the embodiment of the present invention, optionally, the mounting frame includes:

a horizontal plate which is horizontally arranged above the mounting part;

two vertical plates are vertically arranged, one end of each vertical plate is fixedly connected with the top surface of the mounting part, and the other end of each vertical plate is fixedly connected with the end part of the transverse plate;

and one end of the reinforcing plate is fixedly connected with the top surface of the mounting part, and the other end of the reinforcing plate is fixedly connected with the middle part of one side surface of the transverse plate, which is far away from the frame-shaped part.

According to the pile pit excavation device for the cast-in-situ bored pile, the adjusting plate is optionally placed between the two vertical plates and is in sliding connection with the two vertical plates.

According to the pile pit tunneling device for the cast-in-situ bored pile, optionally, one side of the frame-shaped part is open, and the pile pit tunneling device further comprises a sealing edge connecting piece movably connected to the opening side of the frame-shaped part.

According to the pile pit tunneling device for the cast-in-situ bored pile, disclosed by the embodiment of the invention, optionally, the cover body is composed of a mud-blocking top plate and four mud-blocking side plates; clamping grooves are formed in the positions, corresponding to the mud baffle side plates, of the top surfaces of the frame-shaped parts and the edge sealing connecting pieces, and the shapes of the clamping grooves are matched with the shapes of the bottoms of the mud baffle side plates; the bottoms of the four mud blocking side plates are embedded into the clamping grooves.

According to the pile pit tunneling device for the cast-in-situ bored pile, provided by the embodiment of the invention, optionally, the mud-blocking side plate correspondingly embedded into the top of the edge-sealing connecting piece is a mud-blocking front side plate, and the mud-blocking front side plate is detachably connected with the side surface of the adjacent mud-blocking top plate and the side surfaces of other mud-blocking side plates through magnetic sheets.

According to the pile pit tunneling device for the cast-in-situ bored pile, disclosed by the embodiment of the invention, optionally, the pile pit tunneling device further comprises a fixture block, wherein the fixture block is arranged on one side of the top surface of the clamping groove and is detachably connected with the surface of the base through a bolt;

a limiting bulge is formed on the surface, close to the mud blocking front side plate, of the clamping block arranged at the top of the edge sealing connecting piece, and a limiting groove is formed in the corresponding position of the mud blocking front side plate.

According to the pile pit tunneling device for the cast-in-situ bored pile, optionally, sound insulation layers are arranged inside the mud guard top plate and the mud guard side plates, and sound insulation materials are filled in the sound insulation layers.

According to another aspect of the invention, there is provided a method of using a pile pit driving apparatus for a cast-in-situ bored pile, comprising the steps of:

firstly, positioning, namely taking down a cover body, and arranging an opening of a frame part of a base of a pile pit tunneling device for drilling a cast-in-place pile corresponding to a position to be drilled;

drilling preparation, namely installing a cover body, embedding each mud blocking side plate into a corresponding clamping groove, and connecting the clamping block to a corresponding position on the top surface of the base through a bolt;

thirdly, drilling, namely starting the tunneling unit to drill;

discharging slurry, namely taking down the clamping block positioned on the top surface of the edge sealing connecting piece, taking down the mud blocking front side plate, taking down the edge sealing connecting piece, discharging slurry in the cover body and the frame-shaped part, and then installing and resetting the edge sealing connecting piece, the mud blocking front side plate and the clamping block;

and fifthly, repeating the third step and the fourth step until the drilling and tunneling are finished.

Advantageous effects

Compared with the prior art, the invention has at least the following beneficial effects:

(1) according to the pile pit tunneling device for the cast-in-situ bored pile, disclosed by the invention, the tunneling working area is sealed by covering the frame-shaped part with the cover body structure, so that the condition of slurry splashing is avoided, the construction environment is optimized, the cleaning cost is reduced, and the working efficiency is improved;

(2) according to the pile pit tunneling device for the cast-in-situ bored pile, the tunneling unit controls the lifting of the adjusting plate through the longitudinal driving mechanism on the mounting frame, so that the drilling and tunneling depth is controlled, the drilling mechanism drives the drill bit end to rotate and drill, and therefore the drilling and tunneling action is completed, and the structure is simple and effective;

(3) according to the pile pit tunneling device for the cast-in-situ bored pile, the reinforcing plate is arranged on the mounting frame to reinforce the longitudinal structural strength of the mounting frame, so that the stability of the structure of the mounting frame is ensured when the longitudinal driving mechanism drives tunneling;

(4) according to the pile pit tunneling device for the cast-in-situ bored pile, the vertical plate structure of the mounting frame is matched with the adjusting plate in a sliding connection mode, so that the stable track of the lifting motion of the adjusting plate is limited, and the drilling mechanism can stably perform tunneling action during working;

(5) according to the pile pit tunneling device for the cast-in-situ bored pile, the opening is formed in one side of the frame-shaped part and the edge sealing connecting piece in movable connection is matched, so that slurry, gravel and the like accumulated in the tunneling process can leave the opening through the movable edge sealing connecting piece, the slurry, gravel and the like are periodically discharged, and the slurry can be prevented from splashing by installing the edge sealing connecting piece during tunneling;

(6) according to the pile pit tunneling device for the cast-in-situ bored pile, the mud blocking side plates are embedded in the clamping grooves in a matched mode, so that the cover body is more stable after being covered above the frame-shaped part, and the situation that mud splashes out due to the fact that the cover body is separated from the cover body in the tunneling process is avoided;

(7) according to the pile pit tunneling device for the cast-in-situ bored pile, the mud-blocking front side plate, the mud-blocking top plate and other mud-blocking side plates can be flexibly detached and installed, and when mud accumulated in the cover body and the frame-shaped part needs to be removed, the mud-blocking front side plate and the edge sealing connecting piece can be conveniently taken down and then operated;

(8) according to the pile pit tunneling device for the cast-in-situ bored pile, the fixture block is arranged, so that the stability of the embedded connection between the mud blocking side plate of the cover body and the base can be further enhanced, and the cover body is further prevented from being separated from the cover in the tunneling process;

(9) according to the pile pit tunneling device for the cast-in-situ bored pile, the sound insulation layers are arranged inside the mud guard top plate and the mud guard side plates, so that noise generated by a drill bit can be greatly reduced in the tunneling process, and the comfort of constructors is improved;

(10) according to the use method of the pile pit tunneling device for the cast-in-situ bored pile, slurry is shielded by the cover body and cannot splash out in the tunneling process, slurry sand stones accumulated in the cover body and the frame-shaped part in the tunneling process can be timely discharged through the fourth step, the tunneling process is simple and orderly, the problem of slurry splashing is solved, the construction environment is optimized, and the tunneling efficiency is high.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings of the embodiments will be briefly described below, and it is apparent that the drawings in the following description only relate to some embodiments of the present invention and are not limiting on the present invention.

Figure 1 shows a schematic view of a pile pit driving arrangement for a cast-in-situ bored pile according to the present invention;

fig. 2 is a schematic view of the pile pit excavation apparatus for cast-in-situ bored piles according to the present invention with the cover omitted;

FIG. 3 shows a schematic view of the base of the present invention;

figure 4 shows a front view of the pile pit ripper apparatus for a cast-in-situ bored pile of the present invention;

figure 5 shows a side view of the pile pit ripper apparatus for a cast-in-situ bored pile of the present invention;

FIG. 6 shows an enlarged view at A in FIG. 5;

reference numerals:

1. a base; 10. an installation part; 11. a frame-shaped portion; 12. a card slot;

2. a tunneling unit;

20. a mounting frame; 200. a transverse plate; 201. a vertical plate; 202. a reinforcing plate;

21. a longitudinal drive mechanism; 210. a hydraulic cylinder; 211. a telescopic rod;

22. an adjusting plate;

23. a drilling mechanism; 230. a drive motor; 231. drilling a head end;

3. a cover body; 30. a mud guard top plate; 300. a sleeve; 31. a mud guard side plate; 310. a mud-blocking front side plate; 3100. a limiting groove; 311. a magnetic sheet;

4. a sealing edge connector; 40. a rotating rod; 41. a connecting rod; 42. a snap ring;

5. a clamping block; 50. and a limiting bulge.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the drawings of the embodiments of the present invention. It is to be understood that the embodiments described are only a few embodiments of the present invention, and not all embodiments.

Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this invention belongs. The use of "a side," "an end," "the other end," and similar terms in the description and claims of the present application do not denote any order or importance, but rather the terms are used to distinguish one element from another.

Example 1

The pile pit tunneling device for the cast-in-situ bored pile of the embodiment includes:

a base 1 including a mounting portion 10 at one end of the base 1 and a frame portion 11 at the other end of the base 1 having an opening;

the tunneling unit 2 is arranged on the mounting part 10, and the tunneling unit 2 penetrates through the opening of the frame-shaped part 11 to realize drilling and tunneling actions; and the number of the first and second groups,

and a cover body 3 which covers the upper side of the frame-shaped part 11, closes the space above the frame-shaped part 11, and the tunneling unit 2 passes through the cover body 3.

In view of the problem that slurry can splash everywhere when the existing tunneling device conducts drilling and tunneling, the pile pit tunneling device for the cast-in-situ bored pile is designed in the embodiment.

The structure of the base 1 of the embodiment is as shown in fig. 3, the base 1 is a flat plate structure, one end of the flat plate structure is an installation part 10 for connecting a tunneling unit 2 for installing the device, the other end of the flat plate structure is opened, so that a frame part 11 is formed at the periphery of the opening, the tunneling action is carried out at the bottom surface corresponding to the opening part of the frame part 11, a cover body 3 is further arranged in the embodiment, the frame part 11 defines the working range of the drilling tunneling action, and the cover body 3 seals the upper space above the frame part 11, as shown in fig. 1, therefore, when drilling and tunneling are carried out, splashed mud is blocked by the cover body 3, and the phenomenon that the mud splashes is avoided.

Example 2

The pile pit excavation device for the cast-in-situ bored pile of the present embodiment is further improved on the basis of embodiment 1, and the excavation unit 2 includes:

a mounting bracket 20 fixedly coupled to the top surface of the mounting part 10;

a longitudinal driving mechanism 21, which is provided on the top of the mounting frame 20 and provides a driving force for lifting along the longitudinal direction;

an adjusting plate 22, which is horizontally arranged and is in transmission connection with the longitudinal driving mechanism 21, wherein the adjusting plate 22 is positioned above the frame part 11;

the drilling mechanism 23 comprises a driving motor 230 and a drilling end 231, the driving motor 230 is disposed on the adjusting plate 22, the drilling end 231 penetrates through the adjusting plate 22 and extends to the opening of the frame-shaped portion 11, and the drilling end 231 is in transmission connection with the driving motor 230 to perform a drilling action.

As shown in fig. 1, fig. 2 and fig. 3, the longitudinal driving mechanism 21 of the present embodiment includes a hydraulic cylinder 210 and an expansion link 211, the hydraulic cylinder 210 is disposed at the top of the mounting frame 20, the expansion link 211 vertically passes through the top of the mounting frame 20 and is in transmission connection with the adjusting plate 22, the expansion link 211 is driven by the hydraulic cylinder 210 to control the lifting of the adjusting plate 22, and further control the tunneling depth of the drilling mechanism 23, the drill bit end 231 of the drilling mechanism 23 includes a rotating shaft and a drill bit fixed at the end of the rotating shaft, a through hole is disposed at a position corresponding to the drill bit end 231 at the top of the cover body 3, the rotating shaft passes through the.

In the excavation unit 2 of the embodiment, the longitudinal driving mechanism 21 on the mounting frame 20 controls the lifting of the adjusting plate 22, so as to control the drilling and excavation depth, and the drilling mechanism 23 drives the drill bit end 231 to rotate for drilling, so that the drilling and excavation action is completed, and the structure is simple and effective.

Example 3

The pile pit excavation device for bored pile of this embodiment is further improved on the basis of embodiment 2, and the mounting frame 20 includes:

a horizontal plate 200 horizontally disposed above the mounting portion 10;

two vertical plates 201 are vertically arranged, one end of each vertical plate 201 is fixedly connected with the top surface of the mounting part 10, and the other end of each vertical plate 201 is fixedly connected with the end part of the transverse plate 200;

one end of the reinforcing plate 202 is fixedly connected to the top surface of the mounting portion 10, and the other end is fixedly connected to a middle portion of a side surface of the horizontal plate 200 away from the frame portion 11.

As shown in fig. 1, 2 and 3, the mounting frame 20 of the present embodiment is formed by a horizontal plate 200 and two vertical plates 201 to form a frame to support the longitudinal driving mechanism 21 above the base 1 and leave a space for the telescopic rod 211 to telescopically adjust, the reinforcing plate 202 of the present embodiment is fixed to the middle portion of the horizontal plate 200, more specifically, to a side surface of the horizontal plate 200 away from the frame-shaped portion 11, to avoid the interference of the lifting action of the adjusting plate 22 or the drilling mechanism 23, and the reinforcing plate 202 reinforces the longitudinal structural strength of the mounting frame 20, so as to ensure the structural stability of the mounting frame 20 when the longitudinal driving mechanism 21 drives the tunneling.

Example 4

The pile pit excavation device for a cast-in-situ bored pile of the present embodiment is further improved from embodiment 3 in that the adjustment plate 22 is disposed between the two vertical plates 201 and slidably connected to the two vertical plates 201.

As shown in fig. 4, in the embodiment, the two vertical plates 201 are vertically provided with sliding grooves, and two sides of the adjusting plate 22 protrude to form sliding blocks corresponding to the sliding grooves, so that the adjusting plate 22 can stably slide between the two vertical plates 201, and further provide stable guiding for the drilling mechanism 23.

Example 5

The pile pit tunneling device for the cast-in-situ bored pile of the present embodiment is further improved on the basis of embodiment 4, and further includes an edge sealing connector 4, which is movably connected to an opening edge of the frame portion 11, and one edge of the frame portion 11 is opened.

Since the device of the present embodiment closes the working area, prevents slurry from splashing and accumulates slurry in the closed space, the internal space of the cover body 3 and the frame-shaped part 11 needs to be cleaned regularly during the drilling and tunneling process, and thus, as shown in fig. 3 and 4, one side of the frame-shaped part 11 is opened, the opening state or the frame-shaped state of the frame-shaped part 11 is formed by the movably connected edge sealing connecting piece 4, the frame-shaped state is matched with the cover body 3 to place slurry to splash during the tunneling process, and the opening state is convenient for discharging the accumulated slurry when the tunneling is suspended or stopped.

Further, the banding connecting piece 4 of this embodiment includes the bull stick 40, connecting rod 41 and snap ring 42, two blind holes are seted up to the horizontal symmetry in base 1 both ends department that 11 open sides of frame type portion correspond, two bull sticks 40 insert two blind holes department and keep somewhere one section outside the blind hole, connecting rod 41 is the shaft-like structure of both ends trompil, the trompil size matches with the bull stick 40 terminal surface size, therefore, connecting rod 41 can overlap and establish on the bull stick 40, also can take off, the effect of snap ring 42 is that the connecting rod 41 overlaps and establishes after establishing on the bull stick 40 and establish on the bull stick 40 and carry out spacing to connecting rod 41, prevent it from droing.

During drilling and tunneling, the connecting rod 41 is sleeved on the rotating rod 40 and limited through the clamping ring 42, the opening edge of the frame part 11 is sealed, then the cover body 3 is covered to prevent slurry from splashing, tunneling is suspended after a period of time, the clamping ring 42 and the connecting rod 41 are taken down, and accumulated slurry is discharged from the opening edge.

Further, the connecting rod 41 may be provided in a sectional structure with a broken middle portion, and the connecting rod 41 may be unscrewed to expose the open edge by two segments for discharge operation without removing the connecting rod 41 when discharging the slurry.

Example 6

The pile pit tunneling device for the cast-in-situ bored pile of the present embodiment is further improved on the basis of embodiment 5, and the cover body 3 is composed of a mud-blocking top plate 30 and four mud-blocking side plates 31; the top surfaces of the frame-shaped part 11 and the edge sealing connecting piece 4 are provided with clamping grooves 12 at positions corresponding to the mud-stopping side plates 31, and the shapes of the clamping grooves 12 are matched with the shapes of the bottoms of the mud-stopping side plates 31; the bottoms of the four mud guard side plates 31 are embedded into the clamping grooves 12.

As shown in fig. 1, the fender top panel 30 and the fender side panel 31 of the lid body 3 of the present embodiment are fixedly connected by bolts.

As shown in fig. 2 and 3, the corresponding positions of the top surface of the base 1 and the top surface of the edge sealing connecting piece 4 are provided with clamping grooves 12, and the bottom of the mud blocking side plate 31 of the cover body 3 is embedded into the clamping grooves 12, so that the stability of the cover body 3 after being covered is improved, and the situation that the cover body 3 is separated from the cover and closed to cause mud to spill in the tunneling process is prevented.

Furthermore, a through hole is formed in the position, corresponding to the drill bit end 231, of the mud guard top plate 30, a sleeve 300 is arranged at the through hole, the inner wall of the sleeve 300 is rotatably connected with the rotating shaft part of the drill bit end 231, auxiliary guiding is provided for the rotating shaft of the drill bit end 231, and stability of a tunneling track is further ensured.

Example 7

The pile pit tunneling device for the cast-in-situ bored pile of the present embodiment is further improved on the basis of embodiment 6, the mud-blocking side plate 31 correspondingly embedded into the top of the edge-sealing connecting member 4 is a mud-blocking front side plate 310, and the mud-blocking front side plate 310 is detachably connected to the side of the adjacent mud-blocking top plate 30 and the side of the other mud-blocking side plates 31 through magnetic sheets 311.

As shown in fig. 5, in this embodiment, the mud guard top plate 30 and the mud guard front plate 310 are not connected by bolts, the mud guard front plate 310 is a detachable flexible body, the magnetic sheet 311 is disposed at a portion of the mud guard front plate 310 corresponding to the mud guard top plate 30 and the other mud guard side plates 31, and correspondingly, the magnetic sheet 311 is also disposed at a portion of the mud guard top plate 30 and the mud guard side plates 31 corresponding to the mud guard front plate 310.

Through the magnetic sheet 311 structure, the mud-blocking front side plate 310, the mud-blocking top plate 30 and other mud-blocking side plates 31 can be flexibly detached and installed, and when mud accumulated in the cover body 3 and the frame-shaped portion 11 needs to be removed, the mud-blocking front side plate 310 and the edge sealing connecting piece 4 can be conveniently taken down and then operated.

Example 8

The pile pit tunneling device for the cast-in-situ bored pile of the embodiment is further improved on the basis of the embodiment 7, and further comprises a fixture block 5, wherein the fixture block 5 is arranged on one side of the top surface of the clamping groove 12, and the fixture block 5 is detachably connected with the surface of the base 1 through a bolt;

a limiting bulge 50 is formed on the surface of the clamping block 5 arranged at the top of the edge sealing connecting piece 4, which is close to the mud blocking front side plate 310, and a limiting groove 3100 is formed at the corresponding position of the mud blocking front side plate 310.

As shown in fig. 1 and 4, by arranging the fixture block 5, the stability of the embedded connection between the mud-blocking side plate 31 of the cover body 3 and the base 1 can be further enhanced, and the cover body is further prevented from being separated from the cover in the tunneling process; meanwhile, the fixture block 5 and the clamping groove 12 are matched to form more stable limit on the cover body 3, so that the sleeve 300 on the mud guard top plate 30 can guide the rotating shaft part of the drill bit end 231 more reliably and stably.

Example 9

The pile pit tunneling device for the cast-in-situ bored pile of the embodiment is further improved on the basis of the embodiment 8, sound insulation layers are arranged inside the mud guard top plate 30 and the mud guard side plates 31, and sound insulation materials are filled in the sound insulation layers.

The fender mud roof 30 of this embodiment is hollow structure with fender mud curb plate 31, fills in hollow structure and forms the puigging like sound insulation material such as soundproof cotton, and the tunnelling in-process, 3 covers the noise that can reduce the drill bit production greatly after closing of lid, improves constructor's comfort.

Further, the whole device of this application realizes control to it through total control button, because the equipment that control button matches is common equipment, belongs to prior knowledge technique, no longer gives unnecessary details its electric connection relation and specific circuit structure here.

Example 10

The use method of the pile pit tunneling device for the cast-in-situ bored pile comprises the following steps:

firstly, positioning, namely taking down a cover body 3, and arranging an opening of a frame part 11 of a base 1 of a pile pit tunneling device for drilling a cast-in-place pile corresponding to a position to be drilled;

secondly, drilling preparation, namely installing a cover body 3, embedding each mud guard side plate 31 into the corresponding clamping groove 12, and connecting the clamping block 5 to the corresponding position on the top surface of the base 1 through a bolt;

thirdly, drilling, namely starting the tunneling unit 2 to drill;

discharging slurry, namely taking down the fixture block 5 positioned on the top surface of the edge sealing connecting piece 4, taking down the mud blocking front side plate 310, taking down the edge sealing connecting piece 4, discharging slurry in the cover body 3 and the frame-shaped part 11, and then installing and resetting the edge sealing connecting piece 4, the mud blocking front side plate 310 and the fixture block 5;

and fifthly, repeating the third step and the fourth step until the drilling and tunneling are finished.

By the method, in the tunneling process, slurry can be shielded by the cover body 3 and can not splash, slurry sand and stone accumulated in the cover body 3 and the frame part 11 in the tunneling process can be timely discharged through the fourth step, the tunneling process is simple and orderly, the problem of slurry splashing is solved, the construction environment is optimized, and the tunneling efficiency is high.

The examples described herein are merely illustrative of the preferred embodiments of the present invention and do not limit the spirit and scope of the present invention, and various modifications and improvements made to the technical solutions of the present invention by those skilled in the art without departing from the design concept of the present invention shall fall within the protection scope of the present invention.