CN215518747U - Opening pile tip for building piling - Google Patents

Abstract

The utility model relates to the technical field of building piling, in particular to an open pile tip for building piling, which comprises an open pile main body, wherein the upper end of the open pile main body is provided with an inserting pipe, the top of the inserting pipe is provided with an inner attached pipe, the upper end of the inserting pipe is inserted into a cavity in the middle of the inner attached pipe, the inner wall of the inner attached pipe and the outer wall of the inserting pipe are respectively provided with an annular first limiting tooth and an annular first buffering tooth, the first limiting tooth and the first buffering tooth are connected in an attaching way, the inner wall of the inner attached pipe and the outer wall of the inserting pipe are respectively provided with an annular second limiting tooth and an annular second buffering tooth, and a space is arranged between the second limiting tooth and the second buffering tooth, the open pile main body can be connected with the lower end of a tubular pile through the inserting pipe and the inner attached pipe, the impact force is counteracted by using friction force and tearing deformation acting force of a metal material, and double buffering effect is added, the problem of the rapid reduction of the buffering capacity after the opening pile main body is distorted is avoided.

Description

Opening pile tip for building piling

Technical Field

The utility model relates to the technical field of building piling, in particular to an open pile tip for building piling.

Background

The pile tip of the prestressed pipe pile is used for foundation construction of the prestressed concrete pipe pile and the foremost end of the pipe pile, and is arranged on the head of the pipe pile to play a role in guiding and plugging when the pipe pile is sunk for construction. When the engineering precast pile is constructed, the pile tip is welded at the position of the pile head, and the pile body enters the soil layer, so that the pile head is prevented from being damaged and the pile body is prevented from being inclined (verticality control), and the pile can well enter the bearing layer. The form of the pile tip is changed and derived into various different shape specifications along with different geology and different using modes; the pile tip has the following functions: 1. the end of the balance pile entering the soil bears stress, the pile is in the process of entering the soil, the end of entering the soil can bear very complicated stress action under the combined action of pile hammer impact energy, pile self-gravity and soil layer counter force, and the sizes of all parts are different, if a restraint is added at the end of entering the soil after the pile tip is added, the pipe pile is prevented from directly bearing the resultant force action, the damage of the pipe pile due to overlarge local stress is avoided, 2, part of kinetic energy is offset by the deformation of a pile tip steel plate, when a hard rock stratum is met, part of energy is absorbed by the deformation of the steel plate, and the pipe pile is prevented from being immediately damaged.

In the prior art, the following problems exist:

(1) part kinetic energy is offset through the deformation of stake point steel sheet, and the cost is the destruction of stake point structure, after the stake point too distorts, then is difficult to keep the effect of itself again, when receiving impact kinetic energy again, because the structure is inhomogeneous, then the power of transmitting to the tubular pile is also more inhomogeneous, is difficult to protect the tubular pile again.

(2) The existing open pile tip is only fixed by welding at the butt joint, and the installation firmness is to be improved.

SUMMERY OF THE UTILITY MODEL

The present invention is directed to an open pile tip for pile driving in a building to solve the above-mentioned problems of the background art.

The technical scheme of the utility model is as follows: the utility model provides an opening stake point that construction pile was used, includes opening stake main part, the upper end of opening stake main part is provided with the grafting pipe, and the top of grafting pipe is provided with interior accessory pipe, and the upper end of grafting pipe inserts in the middle cavity of interior accessory pipe, be provided with annular first spacing tooth and first buffering tooth on the inner wall of interior accessory pipe and on the outer wall of grafting pipe respectively, first spacing tooth and the laminating of first buffering tooth are connected, and are provided with annular second spacing tooth and second buffering tooth on the inner wall of interior accessory pipe and on the outer wall of grafting pipe respectively, are equipped with the interval between second spacing tooth and the second buffering tooth.

Preferably, the lower side of the first limiting tooth is an inclined surface, the upper side of the first buffer tooth is an inclined surface, and the inclined surface of the first buffer tooth is matched with the inclined surface of the first limiting tooth in structure.

Preferably, the lower side of the second limiting tooth is a horizontal plane, the upper side of the second buffering tooth is a horizontal plane, and the horizontal plane of the second buffering tooth is matched with the horizontal plane of the second limiting tooth in structure.

Preferably, the bottom and the top of interior annex pipe are provided with flanging and interior turn-ups respectively, and the interval between the top of the pipe of pegging graft and the interior turn-ups of interior annex pipe is greater than the interval between spacing tooth of second and the second buffering tooth, the bottom of the pipe of pegging graft is provided with the flanging, and the interval between the flanging of the pipe of pegging graft and the exterior turn-ups of interior annex pipe is greater than the interval between spacing tooth of second and the second buffering tooth.

Preferably, an outer sleeve is arranged on the outer wall of the flanging of the insertion pipe, and a hoop is sleeved on the outer sleeve;

and a supporting sheet is arranged at the top of the inner flanging of the inner attached pipe.

Preferably, a screw is connected between the plug pipe and the outward flange of the inner attached pipe.

Preferably, the bilateral symmetry position of spliced pipe has seted up the bar breach respectively, and this bar breach will be pegged graft the pipe and cut apart into two semicircle plate structures, two be connected with between the semicircle plate structure and expand the piece, expand and support the piece including adjusting the screwed pipe, a plurality of batter brace, 2 a solid fixed cylinder and 2 telescopic screw, 2 telescopic screw inserts respectively and locates the both ends of adjusting the screwed pipe, and 2 telescopic screw keep away from the one end of adjusting the screwed pipe and insert respectively in 2 solid fixed cylinders, solid fixed cylinder and telescopic screw sliding fit, and 2 solid fixed cylinder symmetries set up in the inner wall of two semicircle plate structures of spliced pipe, the batter brace evenly encircles and sets up on the outer wall of solid fixed cylinder.

Preferably, the lower end of the open pile main body is provided with a reinforcing ring, and the middle of the reinforcing ring is provided with crossed tie bars.

The utility model provides an opening pile tip for piling in a building through improvement, compared with the prior art, the utility model has the following improvement and advantages:

one is as follows: in the utility model, the open pile main body can be connected with the lower end of the tubular pile through the inserting pipe and the inner attached pipe, wherein a first limit tooth, a first buffer tooth, a second limit tooth and a second buffer tooth which are matched with each other are arranged between the inserting pipe and the inner attached pipe, when the open pile main body is subjected to impact pressure, the first limit tooth and the first buffer tooth can be mutually extruded to form huge resistance force, until the impact force exceeds the resistance force of the first limit tooth and the second buffer tooth, the first limit tooth and the first buffer tooth can be mutually staggered, the friction force during staggering can offset the impact force, thereby playing a role of strengthening buffer, after the first limit tooth and the first buffer tooth are staggered, the inserting pipe moves upwards for a small distance, so that the original distance between the second limit tooth and the second buffer tooth is eliminated, the second limit tooth and the second buffer tooth can be mutually extruded and abutted until the impact force exceeds the mutual abutting capability of the first limit tooth and the second buffer tooth, the second limiting teeth and the second buffer teeth can be torn and torn off from the side walls of the inner auxiliary pipe and the inserting pipe respectively, and the tearing deformation acting force of the metal material is utilized to offset the impact force, so that the buffer effect can be further achieved, and the problem that the buffer capacity is rapidly reduced after the main body of the open pile is distorted is solved;

the second step is as follows: according to the utility model, the inserting pipe can continuously move upwards after the second limiting teeth and the second buffering teeth are torn and staggered, and abuts against the outer flanging and the inner flanging of the inner auxiliary pipe to form a third supporting buffer, so that the opening pile main body is prevented from losing effect after being twisted.

And thirdly: according to the utility model, the splicing pipe is sleeved at the lower end of the tubular pile through the outer sleeve, so that the connection tightness and firmness can be improved, and the splicing pipe and the inner auxiliary pipe can be welded, connected in a mechanical mode and in a double connection mode, so that the installation is firmer.

Drawings

The utility model is further explained below with reference to the figures and examples:

FIG. 1 is a front view of the internal structure of the present invention;

FIG. 2 is an enlarged schematic view of the utility model at A in FIG. 1;

FIG. 3 is an elevation view of the spreader of the present invention;

FIG. 4 is a top view of the bayonet tube of the present invention;

FIG. 5 is a bottom view of the tie bar and reinforcement ring of the present invention;

fig. 6 is a sectional view of the fixed cylinder and the telescopic screw of the present invention.

Description of reference numerals: 1. the opening pile comprises an opening pile body, 2, an internal auxiliary pipe, 21, a first limiting tooth, 22, a second limiting tooth, 3, an insertion pipe, 31, a first buffer tooth, 32, a second buffer tooth, 33, an outer sleeve, 4, a supporting sheet, 5, a hoop, 6, a lacing wire, 7, a reinforcing ring, 8, a spreading piece, 81, an inclined supporting strip, 82, a fixed cylinder, 83, a telescopic screw, 84 and an adjusting solenoid.

Detailed Description

The present invention is described in detail below, and technical solutions in the embodiments of the present invention are clearly and completely described, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The utility model provides an open pile tip for piling in a building through improvement, and the technical scheme of the utility model is as follows:

as shown in fig. 1-6, an open pile tip for pile driving in a building comprises an open pile body 1, an insertion pipe 3 is arranged at the upper end of the open pile body 1, an inner auxiliary pipe 2 is arranged at the top of the insertion pipe 3, the upper end of the insertion pipe 3 is inserted into a cavity in the middle of the inner auxiliary pipe 2, annular first limiting teeth 21 and first buffer teeth 31 are respectively arranged on the inner wall of the inner auxiliary pipe 2 and the outer wall of the insertion pipe 3, the first limiting teeth 21 and the first buffer teeth 31 are attached and connected, annular second limiting teeth 22 and second buffer teeth 32 are respectively arranged on the inner wall of the inner auxiliary pipe 2 and the outer wall of the insertion pipe 3, and a space is arranged between the second limiting teeth 22 and the second buffer teeth 32.

The open pile main body 1 can be connected with the lower end of a tubular pile through the inserting pipe 3 and the inner attached pipe 2, wherein a first limiting tooth 21, a first buffer tooth 31, a second limiting tooth 22 and a second buffer tooth 32 which are matched with each other are arranged between the inserting pipe 3 and the inner attached pipe 2, when the open pile main body 1 is subjected to impact pressure, the first limiting tooth 21 and the first buffer tooth 31 can be mutually extruded to form huge resistance force, the first limiting tooth 21 and the first buffer tooth 31 can be mutually staggered until the impact force exceeds the resistance force of the first limiting tooth 21 and the first buffer tooth 31, the friction force during staggering can offset the impact force, thereby playing a role of strengthening and buffering, after the first limiting tooth 21 and the first buffer tooth 31 are staggered, the inserting pipe 3 moves upwards for a small distance, so that the original distance between the second limiting tooth 22 and the second buffer tooth 32 is eliminated, and the second limiting tooth 22 and the second buffer tooth 32 can be mutually extruded, until the impact force exceeds the mutual abutting capacity of the inner auxiliary pipe 2 and the insertion pipe 3, the second limiting teeth 22 and the second buffer teeth 32 can be torn and torn off from the side walls of the inner auxiliary pipe 2 and the insertion pipe 3 respectively, and the impact force is offset by the tearing deformation acting force of the metal material, so that the buffer effect can be further achieved, and the problem that the buffer capacity is rapidly reduced after the split pile main body 1 is distorted is solved.

The lower side of the first limiting tooth 21 is an inclined surface, the upper side of the first buffer tooth 31 is an inclined surface, and the inclined surface of the first buffer tooth 31 is matched with the inclined surface of the first limiting tooth 21 in structure; this structure makes the frictional force increase gradually when first buffering tooth 31 and first spacing tooth 21 extrude each other, improves the shock-absorbing capacity.

The lower side of the second limiting tooth 22 is a horizontal plane, the upper side of the second buffer tooth 32 is a horizontal plane, and the horizontal plane of the second buffer tooth 32 is matched with the horizontal plane of the second limiting tooth 22 in structure; this structure makes can stable contact between second spacing tooth 22 and the second spacing tooth 22, improves the ability that both supported each other.

The bottom and the top of the inner auxiliary pipe 2 are respectively provided with an outward flange and an inward flange, the distance between the top of the insertion pipe 3 and the inward flange of the inner auxiliary pipe 2 is larger than the distance between the second limiting tooth 22 and the second buffering tooth 32, the bottom of the insertion pipe 3 is provided with the outward flange, and the distance between the outward flange of the insertion pipe 3 and the outward flange of the inner auxiliary pipe 2 is larger than the distance between the second limiting tooth 22 and the second buffering tooth 32; this structure can let grafting pipe 3 tear the back of staggering at second spacing tooth 22 and second buffering tooth 32, continues the rebound, supports on the flanging and the enstrophe of interior accessory pipe 2, forms the third and supports the buffering, prevents to lose effect after the distortion of opening stake main part 1.

An outer sleeve 33 is arranged on the outer wall of the outward flange of the insertion pipe 3, and a hoop 5 is sleeved on the outer sleeve 33; the hoop 5 consists of two semicircular rings connected through screws, the outer sleeve 33 can be fixed in a reinforcing mode, and the outer sleeve 33 can be sleeved at the lower end of the tubular pile, so that the connection tightness and firmness are improved;

the supporting sheet 4 is arranged at the top of the inner flanging of the inner attached pipe 2; the support sheet 4 can strengthen and fix the inner flanging of the inner attached pipe 2, and the support capability of the inner flanging of the inner attached pipe 2 is improved.

A screw is connected between the plug-in pipe 3 and the outward flange of the inner attached pipe 2; this structure makes not only can weld between grafting pipe 3 and the interior annex pipe 2, and can connect through mechanical system, and dual connected mode lets the installation more firm.

The two symmetrical positions of the two sides of the inserting pipe 3 are respectively provided with a bar-shaped gap, the inserting pipe 3 is divided into two semicircular plate structures by the bar-shaped gap, an expanding piece 8 is connected between the two semicircular plate structures, the expanding piece 8 comprises an adjusting solenoid 84, a plurality of inclined supporting bars 81, 2 fixed cylinders 82 and 2 telescopic screws 83, the 2 telescopic screws 83 are respectively inserted into two ends of the adjusting solenoid 84, one ends of the 2 telescopic screws 83 far away from the adjusting solenoid 84 are respectively inserted into the 2 fixed cylinders 82, the fixed cylinders 82 are in sliding fit with the telescopic screws 83, the 2 fixed cylinders 82 are symmetrically arranged on the inner walls of the two semicircular plate structures of the inserting pipe 3, and the inclined supporting bars 81 are uniformly arranged on the outer wall of the fixed cylinders 82 in a surrounding manner; two semicircular plate structures of grafting pipe 3 make the diameter of grafting pipe 3 finely tune, the operator can stretch out or retract through 2 telescopic screw 83 of 2 ends of rotatory solid fixed cylinder 82 push-and-pull simultaneously, when 2 telescopic screw 83 stretches out simultaneously, can push away two semicircular plate structures of grafting pipe 3 to both sides simultaneously, let the diameter of grafting pipe 3 enlarge, thereby let grafting pipe 3 can with interior accessory pipe 2 stable connection, it is more convenient to let the installation of grafting pipe 3 through this structure.

The lower end of the open pile main body 1 is provided with a reinforcing ring 7, and the middle of the reinforcing ring 7 is provided with a cross tie bar 6; the reinforcing ring 7 and the tie bars 6 fasten the lower end of the open pile main body 1, so that the strength of the lower end opening of the open pile main body 1 is improved.

The working principle is as follows: the open pile main body 1 can be connected with the lower end of a tubular pile through the inserting pipe 3 and the inner attached pipe 2, wherein a first limiting tooth 21, a first buffer tooth 31, a second limiting tooth 22 and a second buffer tooth 32 which are matched with each other are arranged between the inserting pipe 3 and the inner attached pipe 2, when the open pile main body 1 is subjected to impact pressure, the first limiting tooth 21 and the first buffer tooth 31 can be mutually extruded to form huge resistance force, the first limiting tooth 21 and the first buffer tooth 31 can be mutually staggered until the impact force exceeds the resistance force of the first limiting tooth 21 and the first buffer tooth 31, the friction force during staggering can offset the impact force, thereby playing a role of strengthening and buffering, after the first limiting tooth 21 and the first buffer tooth 31 are staggered, the inserting pipe 3 moves upwards for a small distance, so that the original distance between the second limiting tooth 22 and the second buffer tooth 32 is eliminated, and the second limiting tooth 22 and the second buffer tooth 32 can be mutually extruded, until the impact force exceeds the mutual abutting capacity of the inner auxiliary pipe 2 and the insertion pipe 3, the second limiting teeth 22 and the second buffer teeth 32 are torn and torn off from the side walls of the inner auxiliary pipe 2 and the insertion pipe 3 respectively, and the impact force is offset by using the tearing deformation acting force of the metal material, so that the buffer effect can be further achieved, and the problem that the buffer capacity is rapidly reduced after the split pile main body 1 is distorted is solved;

and after second spacing tooth 22 and second buffering tooth 32 tear the stagger, the grafting pipe 3 is continuing upward movement, and the bottom flanging and the top of grafting pipe 3 can push up respectively on the flanging and the enstrophe of interior accessory pipe 2, form the third and support the buffering, prevent to lose effect after the distortion of opening stake main part 1.

The previous description is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (8)

1. The utility model provides an opening stake point of construction pile usefulness, includes opening stake main part (1), its characterized in that: the upper end of the open pile main body (1) is provided with an inserting pipe (3), the top of the inserting pipe (3) is provided with an inner auxiliary pipe (2), the upper end of the inserting pipe (3) is inserted into a cavity in the middle of the inner auxiliary pipe (2), the inner wall of the inner auxiliary pipe (2) and the outer wall of the inserting pipe (3) are respectively provided with a first annular limiting tooth (21) and a first buffer tooth (31), the first limiting tooth (21) and the first buffer tooth (31) are connected in an attaching mode, the inner wall of the inner auxiliary pipe (2) and the outer wall of the inserting pipe (3) are respectively provided with a second annular limiting tooth (22) and a second buffer tooth (32), and a space is formed between the second limiting tooth (22) and the second buffer tooth (32).

2. An open pile tip for use in pile driving in a building as claimed in claim 1, wherein: the lower side of the first limiting tooth (21) is an inclined surface, the upper side of the first buffer tooth (31) is an inclined surface, and the inclined surface of the first buffer tooth (31) is matched with the inclined surface of the first limiting tooth (21) in structure.

3. An open pile tip for use in pile driving in a building as claimed in claim 1, wherein: the lower side of the second limiting tooth (22) is a horizontal plane, the upper side of the second buffer tooth (32) is a horizontal plane, and the horizontal plane of the second buffer tooth (32) is matched with the horizontal plane of the second limiting tooth (22) in structure.

4. An open pile tip for use in pile driving in a building as claimed in claim 1, wherein: the bottom and the top of interior annex pipe (2) are provided with flanging and interior turn-ups respectively, and the interval between the top of grafting pipe (3) and the interior turn-ups of interior annex pipe (2) is greater than the interval between spacing tooth of second (22) and the second buffering tooth (32), the bottom of grafting pipe (3) is provided with the flanging, and the interval between the flanging of grafting pipe (3) and the flanging of interior annex pipe (2) is greater than the interval between spacing tooth of second (22) and the second buffering tooth (32).

5. The open pile tip for pile driving in construction of claim 4, wherein: an outer sleeve (33) is arranged on the outer wall of the outward flanging of the insertion pipe (3), and a hoop (5) is sleeved on the outer sleeve (33);

the top of the inner flanging of the inner attached pipe (2) is provided with a supporting sheet (4).

6. The open pile tip for pile driving in construction of claim 4, wherein: and a screw is connected between the plug pipe (3) and the outward flange of the inner attached pipe (2).

7. An open pile tip for use in pile driving in a building as claimed in claim 1, wherein: the bilateral symmetry position of spliced pipe (3) has seted up the bar breach respectively, and this bar breach will be pegged graft pipe (3) and cut apart into two semicircle plate structures, two be connected with between the semicircle plate structure and expand support piece (8), expand support piece (8) including adjusting screwed pipe (84), a plurality of oblique stay (81), 2 solid fixed cylinder (82) and 2 telescopic screw (83), 2 telescopic screw (83) are inserted respectively and are located the both ends of adjusting screwed pipe (84), and 2 telescopic screw (83) keep away from the one end of adjusting screwed pipe (84) and insert respectively in 2 solid fixed cylinder (82), gu fixed cylinder (82) and telescopic screw (83) sliding fit, and 2 solid fixed cylinder (82) symmetry set up in the inner wall of two semicircle plate structures of spliced pipe (3), oblique stay (81) evenly encircle to set up on the outer wall of solid fixed cylinder (82).

8. An open pile tip for use in pile driving in a building as claimed in claim 1, wherein: the lower end of the open pile main body (1) is provided with a reinforcing ring (7), and the middle of the reinforcing ring (7) is provided with a cross tie bar (6).

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