CN215518753U - Disposable drilling prestressed anchor cable structure - Google Patents

Abstract

The utility model belongs to the technical field of civil engineering construction, and particularly relates to a one-time drilling prestressed anchor cable structure. The outer ring of the connecting base is provided with a plurality of anchor part clamping grooves, and the inner parts of the anchor part clamping grooves are movably clamped with clamping anchor parts through connecting shafts; an inner push rod at the lower end of the clamping anchor is inserted into the anchor external expansion operation groove in the connecting base; an inverted T-shaped operating rod is arranged in the anchor external expansion operating groove, and an extension rod at the upper end of the inverted T-shaped operating rod is inserted and screwed in the drill pipe screwing seat; the top end of the extension rod at the upper end of the inverted T-shaped operating rod is connected with a steel wire zipper; the upper end of the drill pipe screwing seat is screwed with a drill hole sleeve. The drilling operation is realized by the rotary propelling of the rotary pipeline, and the integrated anchor and the rope are conveyed to the underground; meanwhile, the reverse drill rod is matched with the transmission component to realize the outward expansion of the anchor, and the operation is simple.

Description

Disposable drilling prestressed anchor cable structure

Technical Field

The utility model belongs to the technical field of civil engineering construction, and particularly relates to a one-time drilling prestressed anchor cable structure.

Background

Along with the process of urbanization, cities develop towards the sky and the underground, and a plurality of underground projects need foundation pit supporting. The prestressed anchor cable has the advantages of high tensile resistance, high cost performance, high construction speed, reliable construction quality and small foundation pit deformation, can be provided in deep foundation pit support, is widely applied to deep foundation pit support in recent years, and has wide application space.

The prestressed anchor cable process is widely adopted in deep foundation pit support, and is characterized by large tensile resistance, high cost performance, high construction speed, reliable construction quality and small foundation pit deformation, but the prestressed anchor cable pore-forming construction is applied to round gravel, medium coarse sand, fine sand, silt and soft soil, pore forming is difficult, hole collapse is easy, the anchor cable cannot be lowered in place, the anchor cable cannot stretch out by itself, the labor intensity is high, and the construction progress is slow.

SUMMERY OF THE UTILITY MODEL

Aiming at solving the problems of the defects and the shortcomings of the prior art; the utility model aims to provide a one-time drilling prestressed anchor cable structure which is simple in structure, reasonable in design and convenient to use, and realizes drilling operation by rotating and propelling a rotary pipeline, so that an integrated anchor and a rope are conveyed to the underground; meanwhile, the reverse drill rod is matched with the transmission component to realize the outward expansion of the anchor, and the operation is simple.

In order to achieve the purpose, the utility model adopts the technical scheme that: the drilling anchor comprises a drilling propelling drill bit, a connecting base, an anchor clamping groove, a connecting shaft, a clamping anchor, an inner push rod, an anchor external expansion operating groove, an inverted T-shaped operating rod, a drill pipe rotary connecting seat, a drilling sleeve, a steel wire zipper and a rotary clamping component; the upper end of the drilling propelling drill bit is connected with a connecting base, and the upper end of the middle of the connecting base is connected with a drill pipe rotary connecting seat; the outer ring of the connecting base is provided with a plurality of anchor part clamping grooves, and the inner parts of the anchor part clamping grooves are movably clamped with clamping anchor parts through connecting shafts; an inner push rod at the lower end of the clamping anchor is inserted into the anchor external expansion operation groove in the connecting base; an inverted T-shaped operating rod is arranged in the anchor external expansion operating groove, and an extension rod at the upper end of the inverted T-shaped operating rod is inserted and screwed in the drill pipe screwing seat; the top end of the extension rod at the upper end of the inverted T-shaped operating rod is connected with a steel wire zipper; the drill pipe connect the seat upper end soon and connect the drilling sleeve pipe, and be provided with rotatory joint subassembly between drilling sleeve pipe and the shape of falling T action bars upper end extension rod, the drilling sleeve pipe drives the shape of falling T action bars through the cooperation of rotatory joint subassembly and carries out reverse rotation.

Preferably, the drilling propelling drill bit, the connecting base and the drill pipe screwing seat are connected into an integral structure.

Preferably, the outer side of the drill pipe screwing seat is provided with a positive screwing thread; the middle through hole of the drill pipe screwing seat is internally provided with reverse screwing threads.

Preferably, the rotary clamping assembly consists of a reverse clamping seat and a reverse reed; the reverse clamping seat is fixed on the outer side of an extension rod at the upper end of the inverted T-shaped operating rod, the reverse reed is fixed on the inner side of the drilling sleeve, and when the drilling sleeve rotates reversely, the reverse reed props against the reverse clamping seat to enable the inverted T-shaped operating rod to rotate synchronously and reversely.

Preferably, the reverse T-shaped operating rod is matched with the reverse screwing thread when rotating reversely, so that the whole reverse T-shaped operating rod moves upwards; so that the inner push rod is pushed upwards to expand the clamping anchor outwards to form a barb.

After adopting the structure, the utility model has the beneficial effects that: the drilling operation is realized by the rotary propelling of the rotary pipeline, and the integrated anchor and the rope are conveyed to the underground; meanwhile, the reverse drill rod is matched with the transmission assembly to realize the outward expansion of the anchor part, and the one-time drilling prestressed anchor cable construction is adopted, so that the construction period is shortened, the labor intensity is reduced, the construction cost is reduced, and the product percent of pass is improved.

Drawings

To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the present invention is described in detail by the following specific embodiments and the accompanying drawings.

FIG. 1 is a schematic structural view of the present invention;

fig. 2 is a schematic view of the overall structure of the drill bit 1 of the present invention;

FIG. 3 is a schematic view of the rotatable clamping assembly 12 of the present invention;

FIG. 4 is a view of the clip anchor 5 of the present invention expanded;

description of reference numerals: the drilling machine comprises a drilling propelling drill bit 1, a connecting base 2, an anchor clamping groove 3, a connecting shaft 4, a clamping anchor 5, an inner push rod 6, an anchor external expanding operating groove 7, an inverted T-shaped operating rod 8, a drill pipe screwing seat 9, a drilling sleeve 10, a steel wire zipper 11, a rotary clamping component 12, a reverse clamping seat 121, a reverse reed 122, a forward screwing thread 13 and a reverse screwing thread 14.

Detailed Description

In order that the objects, aspects and advantages of the utility model will become more apparent, the utility model will be described by way of example only, and in connection with the accompanying drawings. It is to be understood that such description is merely illustrative and not intended to limit the scope of the present invention. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.

It should be noted that, in order to avoid obscuring the present invention with unnecessary details, only the structures and/or processing steps closely related to the scheme according to the present invention are shown in the drawings, and other details not so relevant to the present invention are omitted.

Referring to fig. 1 to 4, the following technical solutions are adopted in the present embodiment: the drilling anchor clamping device comprises a drilling propelling drill bit 1, a connecting base 2, an anchor clamping groove 3, a connecting shaft 4, a clamping anchor 5, an inner push rod 6, an anchor external expanding operating groove 7, an inverted T-shaped operating rod 8, a drill pipe rotary connecting seat 9, a drilling sleeve 10, a steel wire zipper 11 and a rotary clamping component 12; the upper end of the drilling propulsion drill bit 1 is connected with a connecting base 2, and the upper end of the middle of the connecting base 2 is connected with a drill pipe rotary connecting seat 9; a plurality of anchor part clamping grooves 3 are formed in the outer ring of the connecting base 2, and clamping anchor parts 5 are movably clamped in the anchor part clamping grooves 3 through connecting shafts 4; an inner push rod 6 at the lower end of the clamping anchor 5 is inserted into an anchor external expansion operation groove 7 in the connecting base 2; an inverted T-shaped operating rod 8 is arranged in the anchor external expansion operating groove 7, and an extension rod at the upper end of the inverted T-shaped operating rod 8 is inserted and screwed in the drill pipe screwing seat 9; the top end of the extension rod at the upper end of the inverted T-shaped operating rod 8 is connected with a steel wire zipper 11; the drill pipe connect soon 9 upper ends of seat connect soon drilling sleeve pipe 10, and be provided with rotatory joint subassembly 12 between drilling sleeve pipe 10 and the 8 upper end extension rod of shape of falling T, drilling sleeve pipe 10 drives the shape of falling T action bars 8 through the cooperation of rotatory joint subassembly 12 and carries out the counter rotation.

Wherein, the drilling propelling drill bit 1, the connecting base 2 and the drill pipe screwing seat 9 are connected into an integral structure; the outer side of the drill pipe screwing seat 9 is provided with a positive screwing thread 13; a reverse screwing thread 14 is arranged in the middle inserting hole of the drill pipe screwing seat 9; the rotary clamping component 12 consists of a reverse clamping seat 121 and a reverse reed 122; the reverse clamping seat 121 is fixed on the outer side of an extension rod at the upper end of the reverse T-shaped operating rod 8, the reverse reed 122 is fixed on the inner side of the drilling sleeve 10, and when the drilling sleeve 10 rotates reversely, the reverse reed 122 props against the reverse clamping seat 121 to enable the reverse T-shaped operating rod 8 to synchronously rotate reversely; when the inverted T-shaped operating rod 8 rotates reversely, the inverted T-shaped operating rod 8 moves upwards integrally under the matching of the reverse screwing thread 14; so that it pushes the inner push rod 6 upwards to expand the snap-in anchor 5 outwards into a barb.

In addition, the drilling propelling drill bit 1 adopts a three-blade drill bit, and a rotatable traction steel plate is additionally arranged on the drill bit.

The working principle of the specific implementation mode is as follows: the anchor cable drilling machine generally adopts an XY-300 geological drilling machine or an MGL-135D anchor drilling machine to perform rotary drilling, rough drilling is performed through a tunneling drill bit to form a retaining wall, and then secondary drilling is performed by utilizing a disposable anchor cable drill bit; before secondary drilling, firstly, a drilling sleeve 10 is screwed at the upper end of a drilling pipe screwing seat 9, and the drilling sleeve 10 and a drilling propelling drill bit 1 are connected into a whole; the drilling sleeve 10 is driven to rotate by the driving device to realize the drilling operation of the drilling propelling drill bit 1; because the drilling sleeve 10 is connected with the drill pipe rotary connection seat 9 through the forward rotary connection thread 13, when the drilling sleeve 10 rotates forward, the drilling sleeve 10 and the drilling propelling drill bit 1 are always in a screwing state, and the drilling propelling drill bit 1 is prevented from falling off in the drilling process; after the drilling propelling drill bit 1 is propelled to a specified depth; the drilling sleeve 10 is reversely rotated at a maintained depth, so that the drilling sleeve 10 and the drill pipe screwing seat 9 are kept loose until the drilling propulsion drill bit 1 is separated from the drilling sleeve 10, and then a steel wire zipper 11 at the upper end of the inverted T-shaped operating rod 8 is tightened; in the process, the reverse reed 122 reversely clamps the reverse clamping seat 121 to drive the reverse T-shaped operating rod 8 to synchronously and reversely rotate; the inverted T-shaped operating rod 8 slowly moves upwards under the action of the reverse screwing thread 14 in the process of inverting the inverted T-shaped operating rod 8, and the tray of the inverted T-shaped operating rod 8 lifts the inner push rod 6 upwards to enable the clamping anchor 5 to expand outwards to form a barb; and continuously filling the grout to cast and fix the steel wire zipper 11 in the process of reversely returning the drill sleeve 10.

The slurry is P.O42.5# cement, the water cement ratio is controlled to be 0.5-0.55, and tap water is used for stirring. Before the slurry is prepared, a ruler is arranged in a mortar tank, and the water quantity is accurately measured according to the calculated water quantity. The ash amount is measured according to the designed ash amount. The prepared slurry cannot be isolated, the retention time is too long, and the slurry is used in time.

After adopting above-mentioned structure, this embodiment beneficial effect does: the drilling operation is realized by the rotary propelling of the rotary pipeline, and the integrated anchor and the rope are conveyed to the underground; meanwhile, the anchor is expanded outwards by utilizing the reverse pipe-releasing operation and matching with the transmission component, and the operation is simple.

It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims (5)

1. The prestressed anchor cable structure of once only driling, its characterized in that: the drilling machine comprises a drilling propelling drill bit (1), a connecting base (2), an anchor clamping groove (3), a connecting shaft (4), a clamping anchor (5), an inner push rod (6), an anchor outer expanding operating groove (7), an inverted T-shaped operating rod (8), a drill pipe rotary connecting seat (9), a drilling sleeve (10), a steel wire zipper (11) and a rotary clamping component (12); the upper end of the drilling propulsion drill bit (1) is connected with a connecting base (2), and the upper end of the middle of the connecting base (2) is connected with a drill pipe rotary connecting seat (9); a plurality of anchor part clamping grooves (3) are formed in the outer ring of the connecting base (2), and clamping anchor parts (5) are movably clamped in the anchor part clamping grooves (3) through connecting shafts (4); an inner push rod (6) at the lower end of the clamping anchor (5) is inserted into an anchor external expansion operation groove (7) in the connecting base (2); an inverted T-shaped operating rod (8) is arranged in the anchor external expansion operating groove (7), and an extension rod at the upper end of the inverted T-shaped operating rod (8) is inserted and screwed in the drill pipe screwing seat (9); the top end of an extension rod at the upper end of the inverted T-shaped operating rod (8) is connected with a steel wire zipper (11); drill pipe connect seat (9) upper end soon and connect drill sleeve pipe (10), and be provided with between drill sleeve pipe (10) and the shape of falling T action bars (8) upper end extension rod rotatory joint subassembly (12), drill sleeve pipe (10) carry out the counter rotation through the cooperation drive of rotatory joint subassembly (12) shape of falling T action bars (8).

2. The one-time drilling prestressed anchor cable structure of claim 1, wherein: the drilling propelling drill bit (1), the connecting base (2) and the drill pipe screwing seat (9) are connected into a whole.

3. The one-time drilling prestressed anchor cable structure of claim 1, wherein: the outer side of the drill pipe screwing seat (9) is provided with a positive screwing thread (13); a reverse screwing thread (14) is arranged in the middle inserting hole of the drill pipe screwing seat (9).

4. The one-time drilling prestressed anchor cable structure of claim 1, wherein: the rotary clamping assembly (12) consists of a reverse clamping seat (121) and a reverse reed (122); the reverse clamping seat (121) is fixed on the outer side of an extension rod at the upper end of the inverted T-shaped operating rod (8), the reverse reed (122) is fixed on the inner side of the drilling sleeve (10), and when the drilling sleeve (10) rotates reversely, the reverse reed (122) props against the reverse clamping seat (121) to enable the inverted T-shaped operating rod (8) to rotate reversely synchronously.

5. The one-time drilling prestressed anchor cable structure of claim 1, wherein: when the inverted T-shaped operating rod (8) rotates reversely, the inverted T-shaped operating rod (8) moves upwards integrally under the matching of the reverse screwing thread (14); so that the inner push rod (6) is pushed upwards to expand the clamping anchor (5) outwards to form a barb.

Images