CN113513303A - Prestressed lossless interface Newton force monitoring anchor pulling device - Google Patents
Prestressed lossless interface Newton force monitoring anchor pulling device Download PDFInfo
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- CN113513303A CN113513303A CN202110777932.7A CN202110777932A CN113513303A CN 113513303 A CN113513303 A CN 113513303A CN 202110777932 A CN202110777932 A CN 202110777932A CN 113513303 A CN113513303 A CN 113513303A
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- 229910000831 Steel Inorganic materials 0.000 claims abstract description 79
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- 238000004873 anchoring Methods 0.000 description 9
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- 229910001294 Reinforcing steel Inorganic materials 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B23/00—Apparatus for displacing, setting, locking, releasing, or removing tools, packers or the like in the boreholes or wells
- E21B23/01—Apparatus for displacing, setting, locking, releasing, or removing tools, packers or the like in the boreholes or wells for anchoring the tools or the like
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B49/00—Testing the nature of borehole walls; Formation testing; Methods or apparatus for obtaining samples of soil or well fluids, specially adapted to earth drilling or wells
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D20/00—Setting anchoring-bolts
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
- G08B21/02—Alarms for ensuring the safety of persons
- G08B21/10—Alarms for ensuring the safety of persons responsive to calamitous events, e.g. tornados or earthquakes
Abstract
The application provides a prestressed nondestructive interface Newton force monitoring anchor pulling device, wherein the upper end of an inverse disconnecting hand and a drill rod are connected through a screw thread along a first direction, and the inverse disconnecting hand is of a cylindrical structure; the upper end of the upper mandrel is connected with the inner side wall of the cylindrical structure of the reverse release connector through a screw thread along a second direction, and the lower end of the upper mandrel extends out of the lower end of the reverse release connector; the locking anchor assembly is positioned below the reverse releasing assembly and sleeved on the upper mandrel, the limiting assembly is positioned below the locking anchor assembly, the upper end of the limiting assembly is connected with the lower end of the locking anchor assembly through a screw thread along a second direction, and a plurality of spherical clamping grooves are formed in the lower end of the limiting assembly along the circumferential direction; the card anchor subassembly is located spacing subassembly below, includes: the device comprises steel balls, a plurality of limiting plates and a conical mandrel, wherein the plurality of limiting plates are arranged on the outer side surface of the conical mandrel along a bus of the conical mandrel; the steel balls are multiple and are correspondingly positioned in the spherical clamping grooves and are opposite to the rolling track formed by the limiting plates and the outer side surface of the conical core shaft.
Description
Technical Field
The application relates to the technical field of geological disaster stress-strain monitoring and early warning, in particular to a prestress nondestructive interface Newton force monitoring anchor pulling device which is mainly applied to a deep-hole steel strand prefabricated prestress anchor pulling device.
Background
The stress reduction of the two-plate rock mass in the fracture zone is caused by the Newton force reduction on the earthquake fracture zone (rock mass boundary interface), and the essence of the monitoring, early warning and control of the deep geological disaster is the change process of the Newton force on the measurement structure surface (zone). How to timely and sensitively measure and capture Newton force variation is the key of the field;
the deep geological disaster monitoring system transmits the stress and displacement of a deep bottom layer fracture (surface) zone to the ground surface by utilizing a steel strand below a drill hole. Therefore, the capability of the steel strand for capturing and transmitting stress and displacement is the key of monitoring and early warning of deep geological disasters.
When earthquake catastrophe takes place, fracture (face) area two dish massifs can produce the displacement (Wenchuan earthquake gantry fracture area produces relative displacement 5-6m) along the deep emergence fracture face, and the earthquake of the less earthquake of magnitude of earthquake, this displacement volume often can be littleer. The deep geological disaster monitoring drilling is deep, the depth depends on the buried depth of a fractured structural zone drilled through a stratum into a complete bedrock (the hole depth of a Chenghai fracture Bohr NPR Newton force water monitoring hole is 310 meters), after a steel strand is placed at the bottom of the hole, the steel strand cannot keep a plumb state due to the flexibility and dead weight of the steel strand, the integral structure of the steel strand is loaded, compressed, deformed, accumulated and overlapped (the field measured accumulated and overlapped length of the fractured zone water sounding monitoring hole in the Chenghai is up to 2.8m), and knotting accidents among a plurality of steel strands in the well are preferably caused. Namely, to realize the monitoring mechanism target, when the strain displacement caused by the ground stress with different magnitude occurs, firstly, the interface loss stress strain value is overcome and then is transmitted to the ground surface monitoring early warning system, if the short-time small strain occurs, the concrete data can not be monitored in time, the stress loss of the steel strand in the free state in the well is enabled to reach the minimum state, and a prestressed anchoring device is applied before the grouting consolidation of the steel strand anchoring section, so that the method is an important technical link for realizing the monitoring of the deep geological disaster; .
After the steel strand wires are put down in the monitoring of deep geological disasters, prestress force is exerted to the steel strand wires, the shaft bottom needs to have firm stiff end to bear the prestress force, through to the stiff end perfusion cement in the well, forms the stiff end after solidifying. However, due to the limitation of the length of the fixed end and the influence of factors such as the incompleteness of the well wall in the hole, the anchoring force formed by cement solidification cannot meet the requirement of pre-warning monitoring on prestress application. Therefore, the anchoring force of the fixed end in the well is an important link for monitoring deep geological disasters.
Therefore, the prestress nondestructive interface Newton force monitoring anchor pulling device sends the steel strand into the bottom of the hole, ensures that an anchor clamping mechanism is formed after work, prestretches the steel strand to be in a vertical state before grouting, reduces the stress and displacement loss of the steel strand, enhances the sensitivity of the steel strand for capturing the change of Newton force of a fracture surface (zone), and is an important guarantee for completing monitoring and early warning of deep geological disasters.
Therefore, there is a need to provide an improved solution to the above-mentioned deficiencies of the prior art.
Disclosure of Invention
The application aims to provide a prestressed nondestructive interface Newton force monitoring anchor pulling device to solve or alleviate the problems in the prior art.
In order to achieve the above purpose, the present application provides the following technical solutions:
the application provides a harmless interface Newton's force monitoring of prestressing force draws anchor device includes: anti-subassembly, lock anchor subassembly, spacing subassembly and the anchor of card subassembly of taking off, anti-subassembly of taking off includes: the upper end of the reverse disconnecting handle is connected with the drill rod through a screw thread along a first direction, wherein the reverse disconnecting handle is of a cylindrical structure; the upper end of the upper mandrel is connected with the inner side wall of the cylindrical structure of the reverse release connector through a screw thread along a second direction, and the lower end of the upper mandrel extends out of the lower end of the reverse release connector; wherein the first direction and the second direction are opposite directions; the locking anchor assembly is positioned below the reverse releasing assembly and sleeved on the upper mandrel, wherein a tapered clamping groove with a small upper part and a large lower part is formed in the locking anchor assembly, and a prestressed nondestructive interface Newton force monitoring steel strand is arranged in the tapered clamping groove; the limiting assembly is positioned below the lock anchor assembly, the upper end of the limiting assembly is connected with the lower end of the lock anchor assembly through screw threads along the second direction, and a plurality of spherical clamping grooves are formed in the lower end of the limiting assembly along the circumferential direction; the card anchor subassembly is located spacing subassembly's below includes: the device comprises steel balls, a plurality of limiting plates and a conical mandrel, wherein the plurality of limiting plates are arranged on the outer side surface of the conical mandrel along a bus of the conical mandrel; the number of the steel balls is multiple, the steel balls are correspondingly positioned in the spherical clamping grooves and correspond to a rolling track formed by the limiting plates and the outer side surfaces of the conical mandrels; the lower end of the upper mandrel sequentially penetrates through the anchor locking assembly and the limiting assembly and then is connected with the upper end of the conical mandrel.
Preferably, the reverse stripping assembly further comprises: the upper end of the rope connecting hand is connected with the lower end of the reverse release connecting hand through a rectangular clamping tooth, a first through hole is formed in the middle of the rope connecting hand, and the lower end of the upper mandrel penetrates through the first through hole.
Preferably, the lock anchor assembly comprises: the cable ground tackle is equipped with the second through-hole on the cable ground tackle to the cover is established the top core axle, be equipped with a plurality ofly on the cable ground tackle the toper draw-in groove, wherein, it is a plurality of the toper draw-in groove is followed the circumference equipartition of second through-hole, and is located the outside of second through-hole, every all lock one through the clamping piece in the toper draw-in groove steel strand wires, wherein, the lateral wall of clamping piece with the inside wall looks adaptation of toper draw-in groove, the inside wall of clamping piece with steel strand wires looks adaptation.
Preferably, the lock anchor assembly further comprises: the limiting pad is positioned at the lower end of the conical clamping groove, and the upper end surface of the limiting pad is abutted with the lower end surface of the clamping piece; the limiting ring is positioned below the limiting pad, and the upper end surface of the limiting ring is abutted with the lower end surface of the limiting pad; the limiting pads are multiple and are respectively matched with the conical clamping grooves.
Preferably, the limiting assembly comprises: the cable anchorage device comprises a positioning upper section, a positioning middle section and a positioning lower section, wherein the upper end of the positioning upper section is connected with the lower end of the cable anchorage device through screw threads along the first direction, the upper end of the positioning middle section is connected with the lower end of the positioning upper section in a telescopic manner, the lower end of the positioning middle section is connected with the upper end of the positioning lower section in a telescopic manner, a compression spring is sleeved on the outer side wall of the positioning middle section, and two ends of the compression spring are respectively abutted against the lower end of the positioning upper section and the upper end of the positioning lower section; the position-adjusting lower section is circumferentially provided with a plurality of spherical clamping grooves.
Preferably, the upper adjusting section, the middle adjusting section and the lower adjusting section are all cylindrical, and the outer diameter of the middle adjusting section is smaller than the inner diameters of the upper adjusting section and the lower adjusting section; the inner side wall of the cylinder of the upper section of the position adjusting section and the inner side wall of the cylinder of the lower section of the position adjusting section are both provided with annular limiting parts, and the annular limiting parts are used for limiting the movement of the middle section of the position adjusting section in the cylinder of the upper section of the position adjusting section and the movement of the middle section of the position adjusting section in the cylinder of the lower section of the position adjusting section.
Preferably, be equipped with ring groove on the drum inside wall of accent festival, it is corresponding, annular locating part is the clamp, clamp demountable installation in the ring groove.
Preferably, the conical mandrel is in a circular truncated cone shape with a small upper part and a large lower part, the small end of the conical mandrel extends into the cylinder of the lower section of the position adjustment, and the large end of the conical mandrel is positioned on the outer side of the lower section of the position adjustment.
Preferably, the roll-off track extends from the upper end of the conical mandrel to the lower end of the conical mandrel.
Preferably, the reverse release connector and the drill rod are in positive thread connection, and the upper mandrel and the reverse release connector are in reverse thread connection.
Has the advantages that:
according to the technical scheme provided by the embodiment of the application, the reverse release connecting hand of the reverse release assembly is connected with a drill rod screw thread, an upper mandrel on the reverse release assembly is connected with the reverse release connecting hand through the screw thread, the upper mandrel sequentially penetrates through the lock anchor assembly and the limiting assembly and then is connected with a conical mandrel in the anchor clamping assembly, and the screw thread connection direction between the reverse release connecting hand and the drill rod and the screw thread connection direction between the reverse release connecting hand and the upper mandrel are opposite, so that the conical mandrel is pushed to descend through the drill rod and is sent to the bottom of a drilling hole; the drill rod rotates to drive the reverse disconnecting handle to be disconnected from the upper mandrel; because the steel strand for prestress nondestructive interface Newton force monitoring is arranged in the conical clamping groove of the lock anchor assembly, the lock anchor assembly is in threaded connection with the limiting assembly, the steel strand is pulled upwards on the ground surface, the lock anchor assembly is driven to be lifted upwards, and the limiting assembly is driven to be lifted upwards; because the steel ball is arranged in the spherical clamping groove at the lower end of the limiting component, when the lock anchor component is lifted to the height limited by the steel ball, the steel ball is separated from the spherical clamping groove, rolls into the bottom of the hole along a roll-off track formed between the limiting plate and the conical mandrel in the lock anchor component, and forms an anchoring mechanism together with the conical mandrel and the wall of the drilling well;
after the anchoring mechanism is formed, pretensioning operation is applied to the steel strand on the ground surface, the steel strand drives the anchor locking component to lift, and when the anchor locking component lifts and abuts against the lower end of the cable catcher of the anti-releasing component, the anchor locking component is clamped by the cable catcher, so that the steel strand is clamped and anchored at the bottom of the drilling hole to form an anchor clamping mechanism;
after the anchor clamping mechanism is formed, the steel strand is continuously lifted on the ground surface, so that the steel strand is pulled in and straightened, the stress and displacement loss formed by the flexibility and the self-weight of the steel strand after the steel strand is placed at the bottom of the hole is reduced, the sensitivity of the steel strand for capturing the Newton force change of the fracture surface (zone) is enhanced, and the monitoring and early warning effect of deep geological disasters is achieved.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the application and, together with the description, serve to explain the application and are not intended to limit the application. Wherein:
FIG. 1 is a schematic structural diagram of a prestressed non-destructive interface Newtonian force monitoring anchor pulling device provided in accordance with some embodiments of the present application;
FIG. 2 is a schematic illustration of the clamping of a steel strand in a cable anchor provided in accordance with some embodiments of the present application;
FIG. 3 is a schematic diagram of a positioning upper section provided in accordance with some embodiments of the present application;
FIG. 4 is a schematic diagram of a structure of a positioning middle section provided in accordance with some embodiments of the present application;
fig. 5 is a schematic structural diagram of a positioning lower section provided according to some embodiments of the present application.
Description of reference numerals:
1-reverse disconnecting and connecting the hands; 2-upper mandrel; 3-cable catcher; 4-a cable anchorage; 5-a limiting pad; 6-a limiting ring; 7-positioning and upper section; 8-positioning middle section; 9-compression spring; 10-positioning lower section; 11-a conical mandrel; 12-steel balls; 13-limiting plate.
Detailed Description
The present application will be described in detail below with reference to the embodiments with reference to the attached drawings. The various examples are provided by way of explanation of the application and are not limiting of the application. In fact, it will be apparent to those skilled in the art that modifications and variations can be made in the present application without departing from the scope or spirit of the application. For instance, features illustrated or described as part of one embodiment, can be used with another embodiment to yield a still further embodiment. It is therefore intended that the present application cover the modifications and variations of this invention provided they come within the scope of the appended claims and their equivalents.
In the description of the present application, the terms "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description of the present application but do not require that the present application must be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present application. The terms "connected," "connected," and "disposed" as used herein are intended to be broadly construed, and may include, for example, fixed and removable connections; can be directly connected or indirectly connected through intermediate components; the specific meaning of the above terms can be understood by those of ordinary skill in the art as appropriate.
As shown in fig. 1-5, the prestressed nondestructive interface newton force monitoring anchor pulling device comprises: the locking device comprises an anti-disengaging assembly, an anchor locking assembly, a limiting assembly and an anchor clamping assembly; the anti-stripping component comprises: the drill rod anti-tripping device comprises an anti-tripping connector 1 and an upper mandrel 2, wherein the upper end of the anti-tripping connector 1 is connected with a drill rod through a screw thread along a first direction, and the anti-tripping connector 1 is of a cylindrical structure; the upper end of the upper mandrel 2 is connected with the inner side wall of the cylindrical structure of the reverse release connector 1 through screw threads along a second direction, and the lower end of the upper mandrel 2 extends out of the lower end of the reverse release connector 1; wherein the first direction and the second direction are opposite directions; the locking anchor assembly is positioned below the reverse releasing assembly and sleeved on the upper mandrel 2, wherein a tapered clamping groove which is small in upper part and large in lower part is formed in the locking anchor assembly, and a prestressed nondestructive interface Newton force monitoring steel strand is installed in the tapered clamping groove; the limiting assembly is positioned below the lock anchor assembly, the upper end of the limiting assembly is connected with the lower end of the lock anchor assembly through screw threads along the second direction, and a plurality of spherical clamping grooves are formed in the lower end of the limiting assembly along the circumferential direction; the card anchor subassembly is located spacing subassembly below, includes: the steel ball 12, the limiting plates 13 and the conical core shaft 11, wherein the limiting plates 13 are multiple, and the multiple limiting plates 13 are arranged on the outer side surface of the conical core shaft 11 along a bus of the conical core shaft 11; a plurality of steel balls 12 are arranged, and the plurality of steel balls 12 are correspondingly positioned in the plurality of spherical clamping grooves and correspond to a plurality of limiting plates 13 and a rolling track formed on the outer side surface of the conical core shaft 11; wherein, the lower end of the upper mandrel 2 passes through the anchor locking component and the limiting component in sequence and then is connected with the upper end of the conical mandrel 11.
In the embodiment of the present application, the reverse releasing handle 1 has a cylindrical structure, and the upper spindle 2 has a cylindrical structure. The upper end of the outer side wall of the reverse release catcher 1 is provided with a screw thread, the inner side wall is provided with a screw thread, and the screw thread of the inner side wall is opposite to the screw thread of the outer side wall in rotation direction. The outer side wall of the reverse release connector 1 is in threaded connection with the drill rod; the outer side wall of the upper mandrel 2 is provided with a screw thread connected with the screw thread on the inner side wall of the reverse disconnecting handle 1. Therefore, the thread connection direction between the reverse disconnecting handle 1 and the drill rod is opposite to the thread connection direction between the reverse disconnecting handle 1 and the upper mandrel 2. When the drill rod drives the reverse disconnecting-connecting hand 1 to rotate, the reverse disconnecting-connecting hand 1 and the upper mandrel 2 are gradually disconnected. Therefore, when the drill rod pushes the cone core shaft 11 to descend and the cone core shaft 11 is sent to the bottom of the drilling hole, the reverse disconnecting handle 1 can be driven to be disconnected from the upper core shaft 2 by utilizing the rotation of the drill rod.
In this application embodiment, the lock anchor subassembly is located the below of anti-subassembly that takes off, and the cover is established on last dabber 2, and the steel strand wires that the monitoring of the harmless interface newton force of prestressing force was used are installed in the toper draw-in groove of lock anchor subassembly, and when the drilling rod pushed awl dabber 11 and descend, the lock anchor subassembly descends to the hole bottom thereupon, drives the steel strand wires and descends together. Wherein, the lock anchor subassembly is cylindric, and upper spindle 2 passes the middle part of lock anchor subassembly, and the toper draw-in groove sets up on the lateral wall of lock anchor subassembly along circumference. In order to more accurately monitor the Newton force of the prestress nondestructive interface, a plurality of conical clamping grooves are uniformly distributed, and a steel strand is fixedly installed in each conical clamping groove, namely the steel strand is positioned on the outer sides of the anti-stripping component and the drill rod; the plurality of conical clamping grooves are uniformly distributed, and unbalance loading generated when the device is lowered or prestress is applied can be avoided.
In the embodiment of the application, the limiting component is cylindrical, the upper end of the outer side wall is provided with an outer screw thread, the limiting component and the inner screw thread at the lower end of the inner side wall of the lock anchor component form screw thread connection, and the connecting direction of the limiting component and the inner screw thread is the same as that of the upper mandrel 2 and the reverse disconnecting handle 1, so that the limiting component and the lock anchor component can be simultaneously lowered or lifted. Meanwhile, because the lower end of the upper mandrel 2 sequentially passes through the locking anchor assembly and the limiting assembly to be connected with the conical mandrel 11, when the steel strand is pulled upwards from the ground surface, the conical mandrel 11 is kept fixed, the locking anchor assembly is lifted upwards to drive the limiting assembly to lift upwards, and because the lower end of the limiting assembly is provided with the spherical clamping groove, when the limiting assembly is lifted, the gap between the inner side wall of the limiting assembly and the conical mandrel 11 is larger and larger, until the steel ball 12 can leave from the spherical clamping groove; when the steel strand is continuously lifted upwards, the limiting assembly continuously rises, the steel ball 12 rolls down to the bottom of the hole along a rolling track formed by the limiting plate 13 and the outer side surface of the conical mandrel 11, and forms an anchoring mechanism together with the conical mandrel 11 and the wall of the drilled well.
In some optional embodiments, the anti-drop assembly further comprises: the upper end of the rope connecting hand 3 is connected with the lower end of the reverse release connecting hand 1 through a rectangular clamping tooth, a first through hole is formed in the middle of the rope connecting hand 3, and the lower end of the upper core shaft 2 penetrates through the first through hole.
In the embodiment of the application, the cable connector 3 is cylindrical, the inner side wall of the cable connector is provided with an inner screw thread, and the inner screw thread is in screw thread connection with an outer screw thread at the upper end of the outer side wall of the upper mandrel 2; the upper end of the rope connecting hand 3 is provided with a rectangular latch which forms latch connection with the rectangular latch arranged at the lower end of the reverse disconnecting connecting hand 1. Because the screw thread connecting direction of the cable connecting hand 3 and the upper mandrel 2 is opposite to the screw thread connecting direction of the upper mandrel 2 and the reverse disconnecting hand 1, when the drill rod rotates forwards to drive the reverse disconnecting hand 1 to be disconnected with the upper mandrel 2, the upper mandrel 2 and the cable connecting hand 3 are fastened more and more. After the anchoring mechanism is formed, the steel strand is subjected to pretension operation on the earth surface, the steel strand drives the anchor locking component to lift, and when the anchor locking component lifts and abuts against the lower end of the cable connector 3, the cable connector 3 clamps the steel strand, so that the steel strand is clamped and anchored at the bottom of the drilling hole, and the anchor clamping mechanism is formed.
After the anchor clamping mechanism is formed, the steel strand is continuously lifted on the ground surface, so that the steel strand is pulled in and straightened, the stress and displacement loss caused by the flexibility and self-weight of the steel strand after the steel strand is placed at the bottom of the hole is reduced, the sensitivity of the steel strand in capturing Newton force change of a fracture surface (zone) is enhanced, and the monitoring and early warning effect of deep geological disasters is achieved.
In some alternative embodiments, the lock anchor assembly comprises: the cable anchorage device 4 is provided with a second through hole on the cable anchorage device 4, the upper core shaft 2 is arranged in a sleeved mode, a plurality of conical clamping grooves are formed in the cable anchorage device 4, the conical clamping grooves are evenly distributed along the circumferential direction of the second through hole and located on the outer side of the second through hole, a steel strand is locked in each conical clamping groove through a clamping piece, the outer side wall of each clamping piece is matched with the inner side wall of each conical clamping groove, and the inner side wall of each clamping piece is matched with the steel strand. Further, the lock anchor assembly further comprises: the limiting device comprises a limiting pad 5 and a limiting ring 6, wherein the limiting pad 5 is positioned at the lower end of the conical clamping groove, and the upper end surface of the limiting pad 5 is abutted with the lower end surface of the clamping piece; the limiting ring 6 is positioned below the limiting pad 5, and the upper end surface of the limiting ring 6 is abutted with the lower end surface of the limiting pad 5; wherein, spacing pad 5 has a plurality ofly, and a plurality of spacing pads 5 are with a plurality of toper draw-in grooves looks adaptation respectively.
In this application embodiment, all install a spacing pad 5 at the lower extreme of every toper draw-in groove to, spacing pad 5 supports the lower extreme of tight clamping piece, prevents that the steel strand wires from transferring the in-process and anti-taking off. The limiting ring 6 is arranged at the lower end of the cable anchor 4 and is extruded by the cable anchor 4 and the seasoning upper section 7, so that the limiting pad 5 abuts against the lower end of the clamping piece, the clamping piece is prevented from being displaced relative to the conical clamping groove, and the steel strand is prevented from falling off.
In a specific example, the position limiting assembly comprises: a positioning upper section 7, a positioning middle section 8 and a positioning lower section 10. The upper end of the upper positioning section 7 is connected with the lower end of the cable anchorage device 4 through screw threads along a first direction, the upper end of the middle positioning section 8 is telescopically connected with the lower end of the upper positioning section 7, the lower end of the middle positioning section 8 is telescopically connected with the upper end of the lower positioning section 10, and a compression spring 9 is sleeved on the outer side wall of the middle positioning section 8, wherein two ends of the compression spring 9 are respectively abutted to the lower end of the upper positioning section 7 and the upper end of the lower positioning section 10; a plurality of spherical clamping grooves are axially arranged on the position-adjusting lower section 10. Specifically, the upper positioning section 7, the middle positioning section 8 and the lower positioning section 10 are all cylindrical, and the outer diameter of the middle positioning section 8 is smaller than the inner diameters of the upper positioning section 7 and the lower positioning section 10; the upper end of the position adjusting middle section 8 is in telescopic connection with the lower portion of the cylinder of the position adjusting upper section 7, the lower end of the seasoning middle section 8 is in telescopic connection with the upper portion of the cylinder of the position adjusting lower section 10, the inner side wall of the cylinder of the position adjusting upper section 7 and the inner side wall of the cylinder of the position adjusting lower section 10 are both provided with annular limiting parts, and the annular limiting parts are used for limiting the movement of the position adjusting middle section 8 in the cylinder of the position adjusting upper section 7 and the movement of the position adjusting middle section 8 in the cylinder of the position adjusting lower section 10. Preferably, all be equipped with ring groove on the drum inside wall of section 8 in the accent, on the drum inside wall of section 10 under the accent, correspond, the annular locating part is the clamp, and clamp demountable installation is in ring groove.
In the embodiment of the application, the outer side wall of the positioning upper section 7 is provided with an outer screw thread, the inner side wall of the cable anchorage device 4 is provided with an inner screw thread, and the outer screw thread of the positioning upper section 7 and the inner screw thread of the locking anchorage device form screw thread connection along a first direction; when the drill rod rotates forwards to drive the reverse release connecting hand 1 to be separated from the upper mandrel 2, the upper mandrel 2 and the cable anchorage device 4 are relatively screwed down along a second direction; the positioning upper section 7 and the cable anchorage device 4 are screwed up around the first direction along with the relative rotation of the cable anchorage device 4 towards the second direction. Therefore, the positioning upper section 7 and the cable anchorage device 4 can be firmly connected in the process of disengaging the reverse disengaging handle 1.
In the embodiment of the application, the upper end of the positioning middle section 8 extends into the lower end of the cylinder of the positioning upper section 7, and the lower end of the positioning middle section 8 extends into the upper end of the cylinder of the positioning lower section 10. When the steel strand is pulled upwards on the ground, the cable anchorage device 4 moves upwards to drive the position-adjusting upper joint 7 to move upwards, and in order to avoid the separation of the lower end of the position-adjusting upper joint 7 and the position-adjusting middle joint 8, a hoop is arranged in a cylinder of the position-adjusting upper joint 7, and the relative telescopic stroke between the position-adjusting upper joint 7 and the position-adjusting middle joint 8 is limited.
In the embodiment of the application, the downward acting force is applied to the positioning lower section 10 by arranging the pressing spring, so that the positioning lower section 10 has a downward movement trend and is matched with the conical core shaft 11, and the steel ball 12 is clamped in the spherical clamping groove. And continuously pulling the steel strand upwards, driving the position-adjusting middle section 8 and the position-adjusting lower section 10 to move upwards together by the position-adjusting upper section 7, gradually increasing the gap between the steel ball 12 and the conical mandrel 11 until the steel ball 12 is separated from the spherical clamping groove, rolling into the bottom of the hole along a rolling track formed by the limiting plate 13 and the conical mandrel 11, and forming an anchoring mechanism together with the conical mandrel 11 and the wall of the drilling well.
In this application embodiment, the position-adjusting middle section 8 and the position-adjusting lower section 10 can be connected through a screw thread, specifically, an outer screw thread is arranged on the outer side wall of the cylinder of the position-adjusting middle section 8, an inner screw thread is arranged on the inner side wall of the cylinder of the position-adjusting lower section 10, and the outer screw thread of the position-adjusting middle section 8 and the inner screw thread of the position-adjusting lower section 10 form a screw thread connection. Here, the direction of the screw connection between the middle-position adjustment link 8 and the lower-position adjustment link 10 is not limited, and may be along the first direction or the second direction. The positioning middle section 8 and the positioning lower section 10 can be fixedly connected through clamping, splicing and the like.
In the embodiment of the present application, the tapered mandrel 11 is in a circular truncated cone shape with a small top and a large bottom, the small end of the tapered mandrel 11 extends into the cylinder of the positioning lower section 10, and the large end of the tapered mandrel 11 is located outside the positioning lower section 10. Further, the roll-off rail extends from the upper end of the cone core shaft 11 to the lower end of the cone core shaft 11. Therefore, with the upward movement of the lower section 10, the gap between the steel ball 12 and the conical core shaft 11 is increased until the steel ball 12 is separated and slides down to the bottom of the hole along the rolling track.
In the embodiment of the application, the screw thread connection between the reverse release handle 1 and the drill rod, between the upper mandrel 2 and the reverse release handle 1, between the upper mandrel 2 and the cable connector 3, and between the cable anchor 4 and the positioning upper section 7 are all limited by the rotation direction of the screw thread on the drill rod. Specifically, when the drill rod is in positive thread connection with the reverse trip joint 1, the upper mandrel 2 is in reverse thread connection with the cable joint 3, and the cable anchor 4 is in positive thread connection with the positioning upper section 7. When the drill rod is connected with the reverse trip joint 1 through reverse threads, the upper mandrel 2 is connected with the reverse trip joint 1 through positive threads, the upper mandrel 2 is connected with the cable joint 3 through positive threads, and the cable anchorage device 4 is connected with the position-adjusting upper section 7 through reverse threads.
Through the lossless interface Newton's force monitoring of prestressing force anchor device that draws that this application embodiment provided, can realize that the deep hole steel strand wires are transferred, the anchor prestretches, subducts and transfers steel strand wires stress and displacement loss, and sensitivity is caught in reinforcing steel strand wires stress displacement, improves the monitoring effect of deep hole Newton's force, and is high-efficient, quick, maneuverability is strong.
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims (10)
1. The utility model provides a non-destructive interface Newton's force of prestressing force monitoring draws anchor device which characterized in that includes: a reverse releasing component, an anchor locking component, a limiting component and an anchor clamping component,
the anti-stripping assembly comprises: the upper end of the reverse disconnecting handle is connected with the drill rod through a screw thread along a first direction, wherein the reverse disconnecting handle is of a cylindrical structure; the upper end of the upper mandrel is connected with the inner side wall of the cylindrical structure of the reverse release connector through a screw thread along a second direction, and the lower end of the upper mandrel extends out of the lower end of the reverse release connector; wherein the first direction and the second direction are opposite directions;
the locking anchor assembly is positioned below the reverse releasing assembly and sleeved on the upper mandrel, wherein a tapered clamping groove with a small upper part and a large lower part is formed in the locking anchor assembly, and a prestressed nondestructive interface Newton force monitoring steel strand is arranged in the tapered clamping groove;
the limiting assembly is positioned below the lock anchor assembly, the upper end of the limiting assembly is connected with the lower end of the lock anchor assembly through screw threads along the second direction, and a plurality of spherical clamping grooves are formed in the lower end of the limiting assembly along the circumferential direction;
the card anchor subassembly is located spacing subassembly's below includes: the device comprises steel balls, a plurality of limiting plates and a conical mandrel, wherein the plurality of limiting plates are arranged on the outer side surface of the conical mandrel along a bus of the conical mandrel; the number of the steel balls is multiple, the steel balls are correspondingly positioned in the spherical clamping grooves and correspond to a rolling track formed by the limiting plates and the outer side surfaces of the conical mandrels;
the lower end of the upper mandrel sequentially penetrates through the anchor locking assembly and the limiting assembly and then is connected with the upper end of the conical mandrel.
2. The prestressed lossless interface Newton force monitoring anchor pulling apparatus according to claim 1, wherein the anti-drop assembly further comprises: the upper end of the rope connecting hand is connected with the lower end of the reverse release connecting hand through a rectangular clamping tooth, a first through hole is formed in the middle of the rope connecting hand, and the lower end of the upper mandrel penetrates through the first through hole.
3. The prestressed lossless interface Newtonian force monitoring anchor pulling device of claim 1, wherein the lock-anchor assembly comprises: a cable anchor device is arranged on the cable anchor device,
the cable anchorage device is provided with a second through hole, the upper core shaft is arranged in a sleeved mode, the cable anchorage device is provided with a plurality of conical clamping grooves, the conical clamping grooves are formed in a plurality of positions, the conical clamping grooves are evenly distributed in the circumferential direction of the second through hole and located in the outer side of the second through hole, each conical clamping groove is locked by a clamping piece, the steel strand is locked by the clamping piece, the outer side wall of the clamping piece is matched with the inner side wall of the conical clamping groove, and the inner side wall of the clamping piece is matched with the steel strand.
4. The prestressed lossless interface Newtonian force monitoring anchor pulling device of claim 3, wherein the lock-anchor assembly further comprises: the limiting pad is positioned at the lower end of the conical clamping groove, and the upper end surface of the limiting pad is abutted with the lower end surface of the clamping piece; the limiting ring is positioned below the limiting pad, and the upper end surface of the limiting ring is abutted with the lower end surface of the limiting pad;
the limiting pads are multiple and are respectively matched with the conical clamping grooves.
5. The prestressed lossless interface Newton force monitoring anchor pulling device as claimed in claim 3, wherein the limiting component comprises: a position-adjusting upper section, a position-adjusting middle section and a position-adjusting lower section,
the upper end of the upper positioning section is connected with the lower end of the cable anchorage device through a screw thread along the first direction, the upper end of the middle positioning section is telescopically connected with the lower end of the upper positioning section, the lower end of the middle positioning section is telescopically connected with the upper end of the lower positioning section, and a compression spring is sleeved on the outer side wall of the middle positioning section, wherein two ends of the compression spring are respectively abutted against the lower end of the upper positioning section and the upper end of the lower positioning section;
the position-adjusting lower section is circumferentially provided with a plurality of spherical clamping grooves.
6. The prestressed nondestructive interface Newton force monitoring anchor pulling device of claim 5, wherein the upper adjusting section, the middle adjusting section and the lower adjusting section are all cylindrical, and the outer diameter of the middle adjusting section is smaller than the inner diameter of the upper adjusting section and the lower adjusting section;
the inner side wall of the cylinder of the upper section of the position adjusting section and the inner side wall of the cylinder of the lower section of the position adjusting section are both provided with annular limiting parts, and the annular limiting parts are used for limiting the movement of the middle section of the position adjusting section in the cylinder of the upper section of the position adjusting section and the movement of the middle section of the position adjusting section in the cylinder of the lower section of the position adjusting section.
7. The Newtonian force monitoring anchor pulling device for the prestressed lossless interface as recited in claim 6, wherein an annular groove is provided on the inner side wall of the cylinder of the positioning middle section,
in a corresponding manner, the first and second optical fibers are,
the annular locating part is a hoop, and the hoop is detachably mounted in the annular clamping groove.
8. The prestressed lossless interface Newton force monitoring anchor pulling device as claimed in claim 6, wherein the conical core shaft is in a shape of a truncated cone with a small upper part and a large lower part, the small end of the conical core shaft extends into the cylinder of the lower section, and the large end of the conical core shaft is located at the outer side of the lower section.
9. The prestressed lossless interface Newtonian force monitoring anchor pulling apparatus according to any one of claims 1 to 8, wherein the roll-off rail extends from an upper end of the conical mandrel to a lower end of the conical mandrel.
10. The prestressed lossless interface Newtonian force monitoring anchor pulling apparatus according to any one of claims 1 to 8, wherein the reverse release hand and the drill pipe are in a positive thread connection, and the upper mandrel and the reverse release hand are in a reverse thread connection.
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| CN202110777932.7A CN113513303B (en) | 2021-07-09 | 2021-07-09 | Newton force monitoring anchor pulling device for prestress nondestructive interface |
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| CN202110777932.7A CN113513303B (en) | 2021-07-09 | 2021-07-09 | Newton force monitoring anchor pulling device for prestress nondestructive interface |
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| CN113513303B (en) | 2023-08-22 |
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Effective date of registration: 20240102 Address after: 110000 No.7 Qingnian North Street, Shenhe District, Shenyang City, Liaoning Province Patentee after: Liaoning Nonferrous Exploration Research Institute Co.,Ltd. Address before: 110013 room 2806, No. 7, Qingnian North Street, Shenhe District, Shenyang City, Liaoning Province Patentee before: Xiao Mingru Patentee before: Zhou Hongbo Patentee before: Xiao Shengbo |