CN211621582U - Device for improving pile head breaking efficiency - Google Patents

Abstract

The utility model discloses a device for improving pile head breaking efficiency, a reinforcement cage and a lattice column are arranged in a pile head, the bottom of the pile head is an effective part, the top of the pile head is an over-irrigation part, the interface of the effective part and the over-irrigation part is a cut surface, the device comprises a conveying pipe vertically penetrating the lattice column, a high-voltage source communicated with the conveying pipe and a communicating piece arranged on the conveying pipe, and the communicating piece is provided with communicating ports distributed along the radial direction of the conveying pipe and/or communicating ports distributed towards the input end of the conveying pipe in an inclined way; and limiting parts which are matched with the lattice columns to limit the radial displacement of the water pipe are distributed on the water pipe along the axis. The utility model discloses mainly utilize wind pressure or water pressure will surpass and irritate the part and be full of the cavity, reduce and surpass the intensity of irritating the part, reach the purpose that makes things convenient for the breakage to surpass to irritate the part, compare with the scheme of present forced pile cutting, efficiency promotes more obviously, does not receive other component influences of bored concrete pile moreover, makes things convenient for the on-the-spot operation of abolishing more.

Description

Device for improving pile head breaking efficiency

Technical Field

The utility model relates to a pile head abolishes technical field, in particular to improve device that pile head abolished efficiency.

Background

In the construction of engineering projects such as building engineering, bridge engineering, urban rail transit and the like, the cast-in-place pile technology is widely applied, and the pile top elevation of the cast-in-place pile is regulated to be at least 0.5m higher than the designed elevation in the acceptance standard of construction quality of foundation engineering of building foundations (GB 50208-2002); the technical specification of the building pile foundation) of JCJ94-2008, concrete over-grouting height of different types of cast-in-place piles is also specified.

The specification is that the large amount of concrete for one-time pouring of pile foundation is considered, or the foundation pile of concrete is poured underwater, bubbles or pores in the concrete rise to the part of the pile top in the vibrating process, the pile top is floating slurry, slurry or mortar mixture in underwater concrete pouring and the like in a certain range, and the concrete floating slurry is thicker and lower in strength under the general condition and cannot meet the design requirement. In order to ensure the concrete strength of the pile head part, the floating slurry part is removed, and meanwhile, the pile head is broken to require that the concrete on the top surface of the pile is complete, the surface is smooth, the center is slightly convex, a reinforcing steel bar protective layer is not damaged, and the like, so that the pile head is chiseled to meet the standard requirement.

In actual construction, the condition that the height of the cast-in-place pile concrete exceeds the standard requirement often occurs, so that the cut-off of the over-cast part has large workload.

The pile head breaks away common pneumatic picks, concrete splitting machine, manual digging, explosive blasting, micro-explosion technology and the like, during construction, noise, dust and vibration are large, the influence on the environment is large, meanwhile, the labor intensity of operators is high, the health of the operators is easily influenced after long-term operation, the construction efficiency is low, and the construction cost is high.

Patent document with the publication number of CN102425159B discloses a pile cutting construction method for a cast-in-place pile, which mainly comprises sleeving a pile casing with a groove on a hole top before concrete pouring of a pile body of the cast-in-place pile; after an isolation sleeve is arranged on a vertical main reinforcement of a reinforcement cage at the top of a cast-in-place pile, placing the reinforcement cage; pouring concrete into the pouring pile to form a pile, implanting a hanging ring at the top of the super-pouring pile, and removing the pile casing with the groove after the concrete curing requirement is met; after the pile body reaches 70% of the design strength standard value, drilling a hole at the position of the pile body corresponding to the pile casing groove to form a pouring hole above the design elevation of the pile top; and (3) filling a crushing agent into the hole, wherein the crushing agent plays an expansion role and cuts off the pile head of the over-poured part by combining with a thin synchronous jack placed in the groove.

The scheme has the disadvantages that holes still need to be punched in the pile cutting process, a thin synchronous jack needs to be combined to cut off the pile head of the over-irrigation part, the investment is more, and the operation is inconvenient; especially, when the pile head of the cast-in-place pile poured with the lattice column is cut off, the problem of difficulty in cleaning concrete inside the lattice column by using the scheme or the traditional crushing method is solved because holes on four sides of the lattice column are narrow.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an improve device of pile head abolishing efficiency utilizes inside high-pressure fluid pours into super-filled concrete, makes the part of surpassing and irritates full of the cavity, causes the pile head easily broken, makes things convenient for people's on-the-spot clearance.

The above object of the present invention can be achieved by the following technical solutions:

a device for improving the pile head breaking efficiency is characterized in that a reinforcement cage and a lattice column are arranged in a pile head, the bottom of the pile head is an effective part, the top of the pile head is an over-irrigation part, and the interface between the effective part and the over-irrigation part is a section surface; and limiting parts which are matched with the lattice columns to limit the radial displacement of the conveying pipe are distributed on the conveying pipe along the axis.

By adopting the technical scheme, the normal construction of the cast-in-place pile comprises positioning and drilling, hoisting the reinforcement cage and pouring underwater concrete, before the concrete is finally set, mechanically lowering the conveying pipe to vertically insert the conveying pipe into the super-pouring part of the pile hole until the communicating piece is positioned 10-20cm above the elevation of the pile top, and stopping; the high-pressure source is connected with the conveying pipe, high-pressure fluid is introduced into the conveying pipe, the high-pressure fluid enters the super-irrigation part through the conveying pipe and the communicating piece, and the conveying pipe is slowly lifted while the high-pressure fluid is introduced until the high-pressure fluid is separated from the super-irrigation part and is lifted out of the pile hole; after the cast-in-place pile is finally formed, the super-cast part is broken manually or mechanically. So, utilize high-pressure fluid to surpass and irritate the part and pressurize, make its inside be full of the cavity, effectively reduced and surpassed partial concrete strength of irritating, during the broken super partial of irritating in later stage, it is little to the bored concrete pile top, vibration, noise, dust etc. also can effectively be improved, and is less to the environmental impact, and it is faster to abolish efficiency. The limiting part is matched with the lattice column to limit the conveying pipe in the radial direction, so that the conveying pipe is inserted into the center of the super irrigation part as far as possible, the hollow holes are distributed in the super irrigation part from inside to outside, and the strength of the super irrigation part is reduced.

The utility model discloses further set up to: the locating part includes holder and backup pad, the holder comprises two arcs, respectively the backup pad of rigid coupling on the two arcs outer wall of holder.

By adopting the technical scheme, the two arc-shaped plates are butted to form an annular structure for protecting the conveying pipe, and the two radial ends of the arc-shaped plates are fixed together through bolts, so that the limiting part can determine the installation position according to the situation; the length of locating part and the inside diagonal angle length looks adaptation of lattice column for locating part and lattice column rigid fit are spacing, improve the location effect to the conveyer pipe.

The utility model discloses further set up to: and one end of the supporting plate, which is far away from the clamping piece, is provided with a guide roller.

Through adopting above-mentioned technical scheme, the locating part passes through guide roller and lattice column sliding fit, improves the smoothness degree that the conveyer pipe transferred.

The utility model discloses further set up to: the communicating piece is fixedly or rotatably arranged on the conveying pipe.

By adopting the technical scheme, the communicating piece is fixedly arranged on the conveying pipe, the pressurizing angle of the super-irrigation part by the high-pressure fluid through the communicating port is fixed, and the pressurizing process is stable; the communicating piece is rotatably installed on the conveying pipe, and the high-pressure fluid applies pressure to the communicating ports which are distributed obliquely, so that the communicating ports can rotate along the axis, and the high-pressure fluid can more uniformly and comprehensively pressurize the super-irrigation part.

The utility model discloses further set up to: one side that the communicating piece deviates from the conveyer pipe is provided with the drill bit of back taper.

Through adopting above-mentioned technical scheme, at the in-process that the conveyer pipe was transferred, the drill bit can conveniently break the concrete of the part of irritating excessively, makes the conveyer pipe insert smoothly in the part of irritating excessively.

The utility model discloses further set up to: the conveying pipe is formed by splicing a plurality of sections of pipes.

The utility model discloses further set up to: the communication port of the communication member is temporarily sealed.

Through adopting above-mentioned technical scheme, the in-process of conveyer pipe is transferred to machinery, seals the intercommunication mouth of intercommunication piece temporarily, avoids the intercommunication mouth to be blockked up by the concrete, influences follow-up pressurizing process.

The utility model discloses further set up to: the pipe cover is detachably connected to a communication opening of the communication piece and comprises a cover plate, an outer annular surface of the cover plate axially extends to form a connecting flange perpendicular to the outer annular surface, the cover plate is provided with at least two clamping plates with elasticity, the clamping plates comprise a main plate which is integrally bent towards the center of the cover plate, and one end, away from the cover plate, of the main plate extends to form an elastic plate parallel to the cover plate in the direction towards the center of the cover plate.

Through adopting above-mentioned technical scheme, aim at the intercommunication mouth with the tube cap bottom, manual pressing apron makes splint stretch into in the intercommunication mouth, the inner wall of intercommunication mouth will receive the extrusion of mainboard, because the interact of power, the mainboard will be by the inside extrusion of intercommunication mouth inner wall, the diving board is also crowded thereupon and is drawn together, install the tube cap on the intercommunication mouth under the effect of mainboard elasticity, continue to press the apron, make its lower surface and the terminal surface contact of intercommunication mouth, connecting flange and intercommunication mouth outer wall gomphosis mutually, accomplish and seal temporarily.

The utility model discloses further set up to: the end of the elastic plate is further bent towards the cover plate to form an abutting plate.

Through adopting above-mentioned technical scheme, the mainboard receives can inwards extrude to draw in after great pressure, and the butt board that is located the springboard tip touches the butt each other, can make like this the mainboard can't continue inwards to crowd for the stable installation of apron is on the intercommunication mouth.

The utility model discloses further set up to: one side of the main board, which is far away from the center of the cover plate, is provided with anti-skid grains.

Through adopting above-mentioned technical scheme, the frictional force between mainboard and the intercommunication mouth inner wall has been improved to the antiskid line to improve the stability of tube cap on the intercommunication mouth.

To sum up, the utility model discloses following beneficial effect has:

1. the invention mainly utilizes the wind pressure or the water pressure to fill the cavity with the super-irrigation part, reduces the strength of the super-irrigation part and achieves the purpose of conveniently crushing the super-irrigation part;

2. through set up the locating part on the conveyer pipe, the locating part carries out radial spacing with the spacing cooperation of lattice column rigidity to the conveyer pipe, makes the conveyer pipe insert as far as possible and surpasses partial central point department of irritating, and the positioning effect is better, and then improves high-pressure fluid's the effect of pressurizing, reduces and surpasses partial intensity of irritating.

Drawings

FIG. 1 is a schematic structural view of an embodiment;

FIG. 2 is a schematic structural diagram of an embodiment of a position-limiting member;

FIG. 3 is a schematic structural view of a tube cover in the embodiment.

In the figure, 1, a delivery pipe; 2. dredging the pipe; 21. dredging the opening; 3. a limiting member; 31. a clamping member; 32. a support plate; 33. a guide roller; 4. a drill bit; 5. a tube cover; 51. a cover plate; 511. a connecting flange; 52. a splint; 521. a main board; 522. a spring plate; 523. a butt joint plate; 524. anti-skid lines; 6. a lattice column.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Example (b): a device for improving pile head breaking efficiency is shown in figure 1, a reinforcement cage and lattice columns 6 are arranged in a pile head, the bottom of the pile head is an effective part, the top of the pile head is a super-irrigation part, and the interface of the effective part and the super-irrigation part is a cut-off surface. The pile head breaking device comprises a conveying pipe 1 formed by connecting a plurality of sections of pipes through threads, wherein the conveying pipe 1 is a steel pipe, one end of the conveying pipe 1 is arranged in an open mode and is set as an input end, and the conveying pipe is connected with a high-pressure source through a rubber hose; the other end of the conveying pipe 1 is set as an output end and is provided with a communicating piece, a communicating port is formed in the communicating piece, and the conveying pipe 1 is communicated with the inside and the outside through the communicating piece.

The high pressure source can be a high pressure fan or a high pressure water pump, etc., the high pressure source is connected to the input end of the conveying pipe 1 through a rubber hose, one or more mixed high pressure fluids such as water, air, foaming agent, etc. are injected into the conveying pipe 1, and the high pressure fluids can flow to the outside of the conveying pipe 1 through the communicating piece.

The communicating piece can be a spray head, spray holes on the spray head are distributed along the radial direction of the conveying pipe 1 and/or are distributed towards the input end of the conveying pipe 1 in an inclined mode, the spray head can be fixedly installed on the conveying pipe 1, a rotary spray head can be selected for use, and the rotary spray head can rotate relative to the conveying pipe 1.

Or, a dredging pipe 2 may be configured for the conveying pipe 1, an axis of the dredging pipe 2 is perpendicular to an axis of the conveying pipe 1, and the dredging pipe 2 is welded and fixed on the output end of the conveying pipe 1, or rotatably mounted on the output end of the conveying pipe 1 through a structure such as a bearing. The dredging pipe 2 is provided with dredging holes 21 distributed along the radial direction of the conveying pipe 1 and/or dredging holes 21 distributed towards the input end of the conveying pipe 1 in an inclined mode.

Normally constructing a cast-in-place pile, which comprises positioning and drilling, hoisting a reinforcement cage and pouring underwater concrete, mechanically lowering a conveying pipe 1 to be vertically inserted into a lattice column 6 of a pile hole before the concrete is finally set (within 5-8 hours) until a communicating piece is positioned 10-20cm above a cut surface, and stopping; the high-pressure source is connected with the delivery pipe 1, high-pressure fluid is introduced into the delivery pipe 1, the high-pressure fluid enters the super-irrigation part through the delivery pipe 1 and the communicating piece, and the delivery pipe 1 is slowly lifted while being introduced with the high-pressure fluid until being separated from the super-irrigation part and lifted out of a pile hole; taking 0.5m as an example of the super irrigation part, the lifting time of the conveying pipe 1 is 2-3min, the lifting speed of the conveying pipe 1 is related to the pile diameter, the larger the pile diameter is, the slower the lifting speed is, in short, the lifting speed of the conveying pipe 1 is not higher than 0.5cm/s, and meanwhile, the pressure of high-pressure fluid is kept at 10-15 MPa; after the cast-in-place pile is finally formed, the super-cast part is broken manually or mechanically.

Therefore, the high-pressure fluid is used for pressurizing the super-irrigation part, so that the super-irrigation part is filled with the cavity, the concrete strength of the super-irrigation part is effectively reduced, the influence on the pile top of the cast-in-place pile is small when the super-irrigation part is crushed in the later period, the vibration, the noise, the dust and the like are effectively improved, the influence on the environment is small, and the breaking efficiency is higher; even if the super-irrigation part of concrete in the lattice column 6 is broken, the concrete can be easily broken; if the pressure of the high-pressure fluid is enough, the high-pressure fluid is enough to cut the super irrigation part, even the super irrigation part is scattered, and the post pile cutting process is simpler, more convenient and faster.

The utility model discloses mainly utilize wind pressure or water pressure will surpass and irritate the part and be full of the cavity, reduce and surpass the intensity of irritating the part, reach the purpose that makes things convenient for the breakage to surpass to irritate the part, compare with the scheme of present forced pile cutting, efficiency promotes more obviously, does not receive other component influences of bored concrete pile moreover, makes things convenient for the on-the-spot operation of abolishing more.

The pressurizing effect of the high-pressure fluid on the super-irrigation part is directly related to the position of the conveying pipe 1 in the super-irrigation part, and the closer the conveying pipe 1 is to the center of the super-irrigation part, the better the pressurizing effect is; for this purpose, a plurality of limiting parts 3 are uniformly distributed on the conveying pipe 1 along the axis, as shown in fig. 1 and 2, the limiting parts 3 comprise a clamping part 31 and a supporting plate 32, the clamping part 31 is composed of two arc-shaped plates, the two arc-shaped plates are butted to form an annular structure for protecting the conveying pipe 1, and the two radial ends of the arc-shaped plates are fixed together through bolts; the outer walls of the two arc-shaped plates of the clamping piece 31 are fixedly connected with a supporting plate 32 respectively, and one end of the supporting plate 32 far away from the clamping piece 31 is rotatably provided with a guide roller 33.

The length of locating part 3 and the inside diagonal length looks adaptation of lattice column 6, locating part 3 and the cooperation of lattice column 6 carry out radial spacing to conveyer pipe 1 to make conveyer pipe 1 insert as far as possible and surpass irritate partial central point department, make surpass irritate the part and distribute the cavity from inside to outside, reduce the intensity of surpassing irritateing the part.

One side that deviates from conveyer pipe 1 at the communicating piece is provided with the drill bit 4 of back taper, and at the in-process that conveyer pipe 1 transferred, drill bit 4 can conveniently break the concrete that surpasses irritates the part, makes conveyer pipe 1 insert smoothly and surpasses irritate the part.

The in-process of conveyer pipe 1 is transferred to machinery, seals the intercommunication mouth of intercommunication piece temporarily, avoids the intercommunication mouth to be blockked up by the concrete, influences follow-up pressurizing process. The temporary sealing mode of the communicating piece can be that a plastic film is combined with a rubber band, and the plastic film is coated and fixed on the communicating opening through the rubber band; special tube caps 5 may also be provided for plugging.

As shown in fig. 3, the tube cover 5 includes a cover plate 51, a connecting flange 511 extending from an outer circumferential surface of the cover plate 51 in an axial direction and perpendicular thereto, three clamping plates 52 fixed to a surface of the cover plate 51 where the connecting flange 511 is provided, the clamping plates 52 being thin plates made of a metal or non-metal material with good elasticity, wherein the metal material may be an aluminum alloy, and the non-metal material may be a plastic. The clamp plate 52 is integrally formed with the cover plate 51 or is fixed to the cover plate 51 by bolts.

The clamping plate 52 comprises a main plate 521 which is integrally bent towards the center of the cover plate 51, one side of the main plate 521, which is far away from the center of the cover plate 51, is provided with an anti-slip pattern 524 for increasing friction force, one end of the main plate 521, which is far away from the cover plate 51, extends to form an elastic plate 522 which is parallel to the cover plate 51 towards the center of the cover plate 51, and the end part of the elastic plate 522 is further bent towards the position of the cover plate 51 to form a butt plate 523; the outer diameter of the outer side of the three clamping plates 52 is larger than the inner diameter of the communication opening.

In practical use, the bottom of the pipe cover 5 is aligned to the communication port, the cover plate 51 is manually pressed to enable the clamping plate 52 to extend into the communication port, the inner wall of the communication port is squeezed by the main plate 521, the main plate 521 is squeezed inwards by the inner wall of the communication port due to the interaction of force, the elastic plate 522 is squeezed together with the main plate, when the pressure on the main plate 521 is large, the main plate 521 is squeezed and collected inwards, the abutting plates 523 positioned at the end parts of the elastic plates 522 are touched and abutted with each other, so that the main plate 521 cannot be squeezed inwards continuously, and the main plate 521 is stably installed on the communication port; the cover plate 51 is continuously pressed to bring the lower surface thereof into contact with the end surface of the communication port, and the connection flange 511 is fitted to the outer wall of the communication port, thereby completing the temporary sealing.

The pipe cover 5 enters the super-irrigation part along with the communicating piece, and after the high-pressure fluid is introduced into the conveying pipe 1, the pipe cover 5 is separated from the communicating port under the pressure of the high-pressure fluid, so that the temporary sealing effect is completed.

The pipe 1 can be lowered or lifted by a small auger or other mechanical equipment.

The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications to the present embodiment without inventive contribution as required after reading the present specification, but all of them are protected by patent laws within the scope of the claims of the present invention.

Claims (10)

1. The utility model provides an improve device of pile head demolishs efficiency establishes steel reinforcement cage and lattice column (6) in the pile head, and the pile head bottom is effective part, top for surpassing irritates the part, and the interface of effective part and surpassing irritate the part is section, its characterized in that: the device comprises a conveying pipe (1) vertically penetrating through a lattice column (6), a high-pressure source communicated with the conveying pipe (1) and a communicating piece arranged on the conveying pipe (1), wherein the communicating piece is provided with communicating ports distributed along the radial direction of the conveying pipe (1) and/or communicating ports distributed towards the input end of the conveying pipe (1) in an inclined manner; and limiting parts (3) which are matched with the lattice columns (6) to limit the radial displacement of the conveying pipe (1) are distributed on the conveying pipe along the axis.

2. The device for improving pile head demolition efficiency according to claim 1, wherein: the locating part (3) comprises a clamping part (31) and a supporting plate (32), the clamping part (31) is composed of two arc-shaped plates, and the supporting plate (32) is fixedly connected to the outer walls of the two arc-shaped plates of the clamping part (31).

3. The device for improving pile head demolition efficiency according to claim 2, wherein: and one end of the support plate (32) far away from the clamping piece (31) is provided with a guide roller (33).

4. The device for improving pile head demolition efficiency according to claim 1, wherein: the communicating piece is fixedly or rotatably arranged on the conveying pipe (1).

5. The device for improving pile head demolition efficiency according to claim 4, wherein: one side that the communicating piece deviates from conveyer pipe (1) is provided with drill bit (4) of back taper.

6. The device for improving pile head demolition efficiency according to claim 1, wherein: the conveying pipe (1) is formed by splicing a plurality of sections of pipes.

7. The device for improving pile head demolition efficiency according to claim 1, wherein: the communication port of the communication member is temporarily sealed.

8. The device for improving pile head demolition efficiency according to claim 7, wherein: the pipe cover (5) is detachably connected to a communication opening of the communication piece, the pipe cover (5) comprises a cover plate (51), a connecting flange (511) perpendicular to the cover plate (51) extends out of the outer annular surface of the cover plate (51) in the axial direction, at least two elastic clamping plates (52) are fixedly connected to the surface of the cover plate (51) provided with the connecting flange (511), each clamping plate (52) comprises a main plate (521) which is integrally bent towards the center of the cover plate (51), and an elastic plate (522) parallel to the cover plate (51) extends out of one end, away from the cover plate (51), of the main plate (521) towards the center of the cover plate (51).

9. The apparatus of claim 8 for improving pile head demolition efficiency, wherein: the end of the spring plate (522) is further bent towards the cover plate (51) to form an abutting plate (523).

10. The apparatus of claim 8 for improving pile head demolition efficiency, wherein: and anti-skid grains (524) are arranged on one side of the main board (521) departing from the center of the cover plate (51).

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