CN114635731B - Coal mine underground glass fiber reinforced plastic large-deformation support anchor rod - Google Patents
Coal mine underground glass fiber reinforced plastic large-deformation support anchor rod Download PDFInfo
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- CN114635731B CN114635731B CN202210276573.1A CN202210276573A CN114635731B CN 114635731 B CN114635731 B CN 114635731B CN 202210276573 A CN202210276573 A CN 202210276573A CN 114635731 B CN114635731 B CN 114635731B
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- 239000011152 fibreglass Substances 0.000 title claims abstract description 65
- 239000003245 coal Substances 0.000 title claims abstract description 36
- 230000008093 supporting effect Effects 0.000 claims abstract description 34
- 230000000087 stabilizing effect Effects 0.000 claims abstract description 21
- 239000011435 rock Substances 0.000 claims abstract description 14
- 238000004873 anchoring Methods 0.000 claims abstract description 5
- 230000000149 penetrating effect Effects 0.000 claims abstract description 4
- 229910000831 Steel Inorganic materials 0.000 claims description 56
- 239000010959 steel Substances 0.000 claims description 56
- 239000011521 glass Substances 0.000 claims description 19
- 238000006073 displacement reaction Methods 0.000 claims description 11
- 239000000463 material Substances 0.000 claims description 9
- 229920003023 plastic Polymers 0.000 claims description 8
- 239000004033 plastic Substances 0.000 claims description 8
- 230000000694 effects Effects 0.000 claims description 6
- 230000007704 transition Effects 0.000 claims description 6
- 238000005452 bending Methods 0.000 claims description 2
- 230000006641 stabilisation Effects 0.000 claims 2
- 238000011105 stabilization Methods 0.000 claims 2
- 238000005065 mining Methods 0.000 description 6
- 238000001125 extrusion Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 239000011324 bead Substances 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000004880 explosion Methods 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 230000036346 tooth eruption Effects 0.000 description 2
- 241001391944 Commicarpus scandens Species 0.000 description 1
- 230000031016 anaphase Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000011218 segmentation Effects 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D21/00—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection
- E21D21/008—Anchoring or tensioning means
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D21/00—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection
- E21D21/0086—Bearing plates
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D21/00—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection
- E21D21/0093—Accessories
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- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Piles And Underground Anchors (AREA)
Abstract
The invention discloses a coal mine underground glass fiber reinforced plastic large-deformation support anchor rod, which comprises: a glass fiber reinforced plastic rod body; the outer supporting disc is sleeved at one end of the glass fiber reinforced plastic rod body and is used for supporting the coal mine surrounding rock around the glass fiber reinforced plastic rod body in an inserted mode; the outer sleeve is arranged in the outer supporting disc in a penetrating mode, and the glass fiber reinforced plastic rod body is arranged in the outer sleeve in a sliding mode; the calibration offset adjustment assembly is coaxially connected to the outer tray supporting disc, a fixed tray is coaxially fixed outside the outer sleeve, and the fixed tray is coaxially embedded and fixed on the calibration offset adjustment assembly; the resistance stabilizing assembly is coaxially arranged at one end, close to the outer sleeve, of the glass fiber reinforced plastic rod body; the tensile guide component is arranged in the outer sleeve and can perform secondary stretching and resistance stabilizing on the glass fiber reinforced plastic rod body after the resistance stabilizing component fails so as to achieve the high-strength extensible supporting effect; and the anchoring section is arranged at one end of the glass fiber reinforced plastic rod body far away from the outer supporting disc.
Description
Technical Field
The invention belongs to the technical field of anchor rods in roadway support, and particularly relates to a glass fiber reinforced plastic large-deformation support anchor rod in a coal mine.
Background
The coal side of the coal mine tunnel needs anchor rod support to adapt to the quick propulsion of the fully mechanized coal mining face. In the process of extraction, if the coal side is supported by a steel anchor rod, the cutting teeth of the coal mining machine act with the coal side to cause the following accidents: (1) damaging the pick of the coal mining machine; (2) Easily generate sparks to cause gas explosion and coal bed ignition. Therefore, in order to avoid the action of the cutting teeth of the coal mining machine and the steel anchor rods, workers need to remove the coal slope steel anchor rods in advance, and the recovery efficiency is greatly influenced. The strength requirement of a conventional steel anchor rod can be met by adopting a common glass rod anchor rod, the defect of action of the steel anchor rod and a cutting pick of a coal mining machine is overcome, but the ductility (about 2%) of the glass fiber reinforced plastic material is very poor, and the glass fiber reinforced plastic material has no good plastic deformation capability (about 16%) unlike steel. However, the coal side has large mining deformation in the extraction stage, and the explosion side type impact accident often occurs, so the glass fiber reinforced plastic rod body is easy to break and lose efficacy due to poor ductility, and is difficult to effectively deal with the underground large deformation support of the coal mine.
Therefore, the technical personnel in the field provide a coal mine underground glass fiber reinforced plastic large-deformation support anchor rod to solve the problems in the background technology.
Disclosure of Invention
In order to achieve the purpose, the invention provides the following technical scheme: a colliery is glass steel large deformation in pit and is strutted stock, it includes:
a glass fiber reinforced plastic rod body;
the outer supporting disc is sleeved at one end of the glass fiber reinforced plastic rod body and is used for supporting the coal mine surrounding rock around the glass fiber reinforced plastic rod body in an inserted mode;
the outer sleeve is arranged in the outer tray in a penetrating mode, and the glass fiber reinforced plastic rod body is arranged in the outer sleeve in a sliding mode;
the calibration offset adjustment assembly is coaxially connected to the outer support disc, a fixed tray is coaxially fixed outside the outer sleeve, the fixed tray is coaxially embedded and fixed on the calibration offset adjustment assembly, and the calibration offset adjustment assembly can perform primary correction on the outer sleeve;
the resistance stabilizing assembly is coaxially arranged at one end, close to the outer sleeve, of the glass fiber reinforced plastic rod body;
the tensile guide component is arranged in the outer sleeve and can perform secondary stretching and resistance stabilizing on the glass fiber reinforced plastic rod body after the resistance stabilizing component fails so as to achieve the high-strength extensible supporting effect; and
and the anchoring section is arranged at one end of the glass fiber reinforced plastic rod body far away from the outer supporting disc.
Further, preferably, the resistance stabilizing assembly includes:
the inner sleeve is coaxially sleeved and fixed at one end of the glass fiber reinforced plastic rod body, and a thread groove is formed outside the inner sleeve;
the sliding stopping sleeve is sleeved and arranged on the inner sleeve in a relatively sliding manner through the thread meshing effect;
the steel ball sleeve is sleeved on the glass fiber reinforced plastic rod body in a sliding manner and is abutted and contacted with the anti-slip sleeve; and
the steel ball body, for a plurality of that the circumference array set up, each steel ball body all imbeds the setting and is in the steel ball is sheathe in, and the port inboard of outer tube is equipped with the transition inclined plane, the steel ball body closely supports with the transition inclined plane mutually.
Further, preferably, the calibration offset adjustment assembly includes:
the frame expanding plate is used for expanding the frame plate,
the drag reduction springs are vertically and symmetrically connected between the expanding frame plate and the outer supporting disc;
the inner shaft bracket is symmetrically and rotatably connected to the outer support disc, and the other end of the inner shaft bracket is respectively connected to the expanding frame plates in a staggered manner, so that the inner shaft bracket is in an X shape;
the fixed shaft sleeve is rotatably connected to the outer supporting disc and is positioned at each inner shaft frame;
the inner sliding sleeve can be relatively and rotationally and symmetrically arranged on the expanding frame plate, a connecting rod is arranged in the inner sliding sleeve in a limiting sliding mode, one end of the connecting rod extends into and is fixed in the fixed shaft sleeve, and the other end of the connecting rod penetrates through the expanding frame plate and then is sleeved with an outer nut in a threaded mode;
and the supporting spring is sleeved outside the connecting rod and positioned between the inner sliding sleeve and the fixed shaft sleeve.
Further, preferably, the outer sleeve is of a two-section structure, and the longitudinal section of one end, extending into the surrounding rock of the coal mine, of the outer sleeve is of an arc-shaped bent structure; the outer sleeve is further sleeved with a stop ring piece, and an elastic layer is embedded into the stop ring piece and used for circumferentially and elastically wrapping the glass fiber reinforced plastic rod body.
Further, preferably, the tensile guide member includes:
the inner sliding pipe is coaxially arranged in the outer sleeve in a relatively sliding manner;
the positioning ring is coaxially fixed on the inner sliding pipe and can be limited and abutted against the resistance stabilizing assembly after the resistance stabilizing assembly fails;
the positioning shaft tube is coaxially arranged in the outer sleeve in a relatively sliding manner, inner sliding positions are symmetrically arranged on the positioning shaft tube in the left-right direction, a pin shaft piece is correspondingly fixed on the inner sliding tube, and the pin shaft piece is arranged in the inner sliding positions in a sliding manner; and
and the inner spring is circumferentially distributed in the positioning shaft tube, and the other end of the inner spring is abutted and contacted with the inner sliding tube.
Further, preferably, the inner slide position is configured in a herringbone structure, so that the inner slide pipe synchronously carries out local deflection in the vertical displacement, and a limiting spring is radially connected between the positioning shaft pipe and the inner slide pipe.
Further, preferably, the method further comprises:
the tightening sleeve is coaxially fixed at one end, far away from the inner sliding pipe, of the positioning shaft pipe;
the side frames are circumferentially arranged, one end of each side frame is hinged in the outer sleeve, and the other end of each side frame is connected to the outer sleeve in a sliding manner;
and the connecting spring is arranged between the lateral frame and the outer sleeve.
Further, as preferred, the longitudinal section of side position frame is the arc structure, just the one end that contracts the cover with side position frame offsets and leans on the contact, side position frame adopts high elastic compression plasticity material.
Further, preferably, the contact surface of the lateral frame and the tightening sleeve is also provided with a tooth filing structure.
Compared with the prior art, the invention has the beneficial effects that:
according to the invention, the stable resistance assembly consisting of the outer sleeve, the steel ball sleeve (steel ball) and the anti-slip sleeve can realize stable resistance extensible support with a larger stroke under the stable resistance of about 80% of the strength of the rod body, so that the high-stable-resistance and high-elongation glass fiber reinforced plastic rod body is provided, when the deformation of the surrounding rock is small, the function of the stable-resistance extensible glass fiber reinforced plastic rod body is the same as that of the conventional glass fiber reinforced plastic rod body, the supporting force can be continuously increased, and the deformation of the surrounding rock can be timely resisted. Wherein, the outer tube is two segmentation structures, and its one end sets up to the arc cross-section, especially in reply the large deformation support (steadily hinder the subassembly under the inefficacy state), steel ball on the glass steel body of rod can correspond the card and go into to the position ring in, make the inside slide tube can carry out axial displacement, and the inside slide position on the location central siphon can make the inside slide tube correspond the deflection in the displacement, thereby reduce the twisting action in the large deformation support, prevent that the glass steel body of rod directly twists off, and the glass steel body of rod can carry out the adaptability deflection along the arc cross-section of outer tube by the location central siphon, further enlarge the ductility and strut, and, the side frame in the outer tube can assist the glass steel body of rod to carry out supplementary direction when deformation is buckled, its file tooth structure face that forms with tightening the cover can reach cascaded tensile effect simultaneously, prevent the direct fracture of the glass steel body of rod under the stress deformation, still be provided with calibration offset subassembly simultaneously, be used for the external initial positioning angle of tensile sleeve adjusts, and buffer in the anaphase in step.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic structural diagram of a resistor stabilizing assembly according to the present invention;
FIG. 3 is a schematic diagram of a calibration offset adjustment assembly according to the present invention;
FIG. 4 is a schematic structural view of the outer sleeve according to the present invention;
figure 5 is a schematic view of the construction of a tensile guide element of the present invention;
FIG. 6 is a schematic structural view of an inner slide position according to the present invention;
FIG. 7 is a schematic structural view of a lateral frame according to the present invention;
in the figure: the device comprises a glass fiber reinforced plastic rod body 1, an 11 anchoring section, a 2 outer sleeve, a 3 outer supporting disc, a 4 stabilizing assembly, a 41 inner sleeve, a 42 sliding stop sleeve, a 43 steel ball sleeve, a 5 tensile guide assembly, a 51 inner sliding tube, a 52 abutting ring, a 53 positioning shaft tube, a 54 inner spring, a 55 pin shaft piece, a 56 limiting spring, a 57 inner sliding position, a 58 connecting spring, a 59 tightening sleeve, a 6 calibration offset adjustment assembly, a 61 expanding frame plate, a 62 drag reduction spring, a 63 inner shaft frame, a 64 fixing shaft sleeve, a 65 inner sliding sleeve, a 66 connecting rod, a 67 supporting spring and a 7 side frame.
Detailed Description
Referring to fig. 1, in an embodiment of the present invention, a coal mine downhole glass fiber reinforced plastic large deformation support anchor rod includes:
a glass fiber reinforced plastic rod body 1;
the outer supporting disc 3 is sleeved at one end of the glass fiber reinforced plastic rod body 1 and is used for supporting the coal mine surrounding rock around the glass fiber reinforced plastic rod body 1 in an inserted manner;
the outer sleeve 2 is arranged in the outer supporting disc 3 in a penetrating mode, and the glass fiber reinforced plastic rod body 1 is arranged in the outer sleeve 2 in a sliding mode;
the calibration offset adjustment assembly 6 is coaxially connected to the outer support disc 3, a fixed tray 21 is coaxially fixed outside the outer sleeve 2, the fixed tray 21 is coaxially embedded and fixed on the calibration offset adjustment assembly 6, and the calibration offset adjustment assembly 6 can perform primary correction on the outer sleeve 2;
the resistance stabilizing component 4 is coaxially arranged at one end, close to the outer sleeve 2, of the glass fiber reinforced plastic rod body 1;
the tensile guide component 5 is arranged in the outer sleeve 2, and the tensile guide component 5 can perform secondary stretching and resistance stabilizing on the glass fiber reinforced plastic rod body 1 after the resistance stabilizing component fails so as to achieve a high-strength extensible supporting effect; and
and the anchoring section 11 is arranged at one end of the glass fiber reinforced plastic rod body 1 far away from the outer supporting disc 3.
In this embodiment, the resistance stabilizing assembly 4 includes:
the inner sleeve 41 is coaxially sleeved and fixed at one end of the glass fiber reinforced plastic rod body, and a thread groove is formed outside the inner sleeve 41;
a sliding stop sleeve 42 which is sleeved on the inner sleeve 41 in a relatively sliding manner through a thread engagement effect;
the steel ball sleeve 43 is sleeved on the glass fiber reinforced plastic rod body 1 in a sliding manner and is abutted and contacted with the sliding stop sleeve 42; and
the steel ball bodies are arranged in a circumferential array, each steel ball body is embedded in the steel ball sleeve 43, a transition inclined plane is arranged on the inner side of the port of the outer sleeve 2, the steel ball bodies are tightly abutted against the transition inclined planes, it needs to be noted that in a use state, the steel ball bodies in the steel ball sleeves are used for clamping the outer sleeve and the inner sleeve, extrusion forces exist among the inner sleeve, the outer sleeve and the steel ball bodies, the extrusion forces are in direct proportion to the axial force in the glass steel rod body, when the axial force in the glass steel rod body is small, the three steel ball bodies are in a clamping state, and the glass steel rod body has the same function as a conventional glass steel rod body; when the axial force of the glass fiber reinforced plastic rod body reaches the set stable resistance, the anchor rod is opened to have an extensible function;
when the coal wall surrounding rock is greatly deformed, the external force applied to the outer sleeve pipe is increased, the extrusion force among the inner sleeve pipe, the steel ball body and the outer sleeve pipe is also increased, when any one of the materials of the inner sleeve pipe, the steel ball body and the outer sleeve pipe reaches the plastic yield limit of the material, the inner sleeve pipe and the outer sleeve pipe can perform dislocation, stable resistance and extensible support are achieved, here, the plastic yield limit and the strength limit of the material among the outer sleeve pipe, the inner sleeve pipe and the steel ball body are set to be the smallest in sequence, the inner sleeve pipe is arranged in the middle, and the steel ball body is the largest. Therefore, the part of the inner side of the outer sleeve, which is contacted with the steel ball body, firstly enters a plastic yield state, and the steel ball body cuts the inner wall of the outer sleeve along the axial direction of the anchor cable to generate plastic slip, so that the glass fiber reinforced plastic rod body enters a stable resistance extensible supporting state. The stable resistance of the glass fiber reinforced plastic rod body is determined by the structure and material yield limit of the outer sleeve, the steel beads and the inner sleeve, the gap among the three and the arrangement and combination of the steel beads. Generally, the yielding resistance can be set to be about 80% of the strength of the glass fiber reinforced plastic rod body, and high-stable-resistance extensible support is realized. The plastic yield limit of a common metal material is relatively stable, so the stable resistance of the glass fiber reinforced plastic rod body is relatively stable.
As a preferred embodiment, the calibration offset adjustment assembly 6 includes:
the frame-enlarging plate (61) is provided with,
the drag reduction springs 62 are vertically and symmetrically connected between the expanding frame plate 61 and the outer supporting disc 3;
the inner shaft bracket 63 is symmetrically and rotatably connected to the outer support disc 3, and the other end of the inner shaft bracket 63 is respectively connected to the expanding frame plate 61 in a staggered manner, so that the inner shaft bracket 63 is in an X shape;
the fixed shaft sleeve 64 is rotatably connected to the outer supporting disc 3 and positioned at each inner shaft frame 63;
the inner sliding sleeve 65 can be relatively and rotationally and symmetrically arranged on the expanding frame plate 61, a connecting rod 66 is arranged in the inner sliding sleeve 65 in a limiting sliding manner, one end of the connecting rod 66 extends into and is fixed in the fixed shaft sleeve 64, and the other end of the connecting rod 66 penetrates through the expanding frame plate 61 and then is in threaded sleeve joint with an outer nut;
supporting spring 67 cup joints connecting rod 66 is outer and is located between inner sliding sleeve 65 and the fixed axle sleeve 64, wherein, through each outer screw of rotation regulation for expand the frame plate and be parallel or the tilt state relatively outer supporting disk, at this moment, the outer tube can correspond and be certain inclination and plug in on the colliery country rock, when reply high strength big deformation, supporting spring and drag reduction spring homoenergetic provide the elastic support effect simultaneously, with the instantaneous impact fracture in preventing big deformation.
In the embodiment, the outer sleeve 2 is constructed into a two-section structure, and the longitudinal section of one end of the outer sleeve extending into the coal mine surrounding rock is of an arc-shaped bending structure; the outer sleeve 2 is further sleeved with a stop ring piece 22, an elastic layer 23 is embedded in the stop ring piece 22 and used for circumferentially and elastically coating the glass fiber reinforced plastic rod body, particularly, when the stop sliding sleeve abuts against the stop ring piece, the stable resistance extensible stroke of the glass fiber reinforced plastic rod body is finished, and the subsequent supporting function is the same as that of a conventional glass fiber reinforced plastic rod body; when needing to explain, in use, should be preferential to correspond according to colliery country rock internal stress distribution condition and adjust the outer tube position to make in dealing with the large deformation and strutting, the glass steel rod body can carry out adaptability extension along the curved cross section of arc of outer tube, so that it especially carries out the arc orbit displacement, and the curved resistance to compression stage of reentrant further improves and struts the extension effect.
In this embodiment, the tensile guide element 5 includes:
an inner slide tube 51 coaxially disposed in the outer sleeve 2 in a relatively slidable manner;
the abutting ring 52 is coaxially fixed on the inner sliding pipe 51, and the abutting ring 52 can be limited and abutted with the resistance stabilizing component 4 after the resistance stabilizing component fails;
the positioning shaft tube 53 is coaxially arranged in the outer sleeve 2 in a relatively sliding manner, inner sliding positions 57 are symmetrically arranged on the positioning shaft tube 53 in the left-right direction, a pin shaft piece 55 is correspondingly fixed on the inner sliding tube 51, and the pin shaft piece 55 is arranged in the inner sliding positions 57 in a sliding manner; and
and the inner springs 54 are circumferentially distributed in the positioning shaft tube 53, and the other ends of the inner springs 54 are in abutting contact with the inner sliding tube 51.
In this embodiment, the inner slide location 57 is configured to be a herringbone structure, so that the inner slide pipe 51 is synchronously and locally deflected in the vertical displacement, and the limiting spring 56 is radially connected between the positioning shaft pipe 53 and the inner slide pipe 51, especially in large deformation support, the coal seam around the glass fiber reinforced plastic rod body may be twisted in the displacement deformation, and at this time, the inner slide pipe can adaptively and correspondingly slide along the inner slide location along with the twisting of the glass fiber reinforced plastic rod body, so as to reduce and adapt to the torsion stress of the surrounding coal seam, and prevent the glass fiber reinforced plastic rod body from being integrally broken under the action of excessive torsion.
As a preferred embodiment, the method further comprises the following steps:
the tightening sleeve 59 is coaxially fixed at one end of the positioning shaft tube 53 far away from the inner sliding tube 51;
the side frames 7 are circumferentially arranged, one end of each side frame 7 is hinged in the outer sleeve 2, and the other end of each side frame 7 is connected to the outer sleeve 2 in a sliding manner;
a connecting spring 58 disposed between the lateral frame 7 and the outer sleeve 2.
In this embodiment, the longitudinal section of the side frame 7 is an arc-shaped structure, and one end of the tightening sleeve 59 abuts against and contacts the side frame 7, and the side frame 7 is made of a high-elasticity and high-pressure plastic material.
In this embodiment, side frame 7 with it still is equipped with the file tooth structure to reduce the cover 59 contact surface, on the one hand reduces the cover and slides along with the one end of drive side frame in the location central siphon displacement, and the side frame can assist the glass steel rod body direction this moment to can independently correct in the large deformation and strut the position, and on the other hand, the side frame can receive the pressure progressively crooked, and its file tooth contact surface with reducing the cover can provide cascaded tensile adaptability in the large deformation for the glass steel rod body simultaneously, prevents to produce direct fracture phenomenon in its instantaneous displacement.
Specifically, in large-deformation support, the calibration offset adjustment assembly is timely adjusted according to the internal stress distribution condition of the coal mine, so that the outer sleeve can be vertically or obliquely inserted at the surrounding rock of the coal mine; when tunnel country rock takes place the large deformation, its external force increase of applying the glass steel pole body, make interior sleeve pipe, the extrusion force between the steel ball body and the outer tube three increases, be in the back that became invalid when steadily hindering the subassembly, the one end of the glass steel pole body can carry out the displacement along the arc cross-section of outer tube, and the interior slide position on the location central siphon can make interior slide pipe correspond the deflection in the displacement, thereby reduce the torsion action in the large deformation is strutted, lateral frame can provide cascaded tensile adaptability for the glass steel pole body in the large deformation with the file tooth contact surface that contracts the cover simultaneously, and supplementary glass steel pole body is corrected and is strutted the position, thereby the ductility is strutted in the expansion.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered as the technical solutions and the inventive concepts of the present invention within the technical scope of the present invention.
Claims (6)
1. The utility model provides a colliery is glass steel large deformation in pit struts stock which characterized in that: it includes:
a glass fiber reinforced plastic rod body (1);
the outer supporting disc (3) is sleeved at one end of the glass fiber reinforced plastic rod body (1) and is used for supporting the coal mine surrounding rocks around the glass fiber reinforced plastic rod body (1) in an inserted mode;
the outer sleeve (2) is arranged in the outer support tray (3) in a penetrating mode, and the glass fiber reinforced plastic rod body (1) is arranged in the outer sleeve (2) in a sliding mode;
the calibration offset adjustment assembly (6) is coaxially connected to the outer support disc (3), a fixed tray (21) is coaxially fixed outside the outer sleeve (2), the fixed tray (21) is coaxially embedded and fixed on the calibration offset adjustment assembly (6), and the calibration offset adjustment assembly (6) can preliminarily correct the outer sleeve (2);
the resistance stabilizing assembly (4) is coaxially arranged at one end, close to the outer sleeve (2), of the glass fiber reinforced plastic rod body (1);
the tensile guide component (5) is arranged in the outer sleeve (2), and the tensile guide component (5) can perform secondary stretching resistance stabilization on the glass fiber reinforced plastic rod body (1) after the resistance stabilization component fails so as to achieve a high-strength extensible supporting effect; the anchoring section (11) is arranged at one end of the glass fiber reinforced plastic rod body (1) far away from the outer supporting disc (3);
the resistance stabilizing assembly (4) comprises: the inner sleeve (41) is coaxially sleeved and fixed at one end of the glass fiber reinforced plastic rod body, and a thread groove is formed outside the inner sleeve (41);
the sliding stopping sleeve (42) is sleeved and arranged on the inner sleeve (41) in a relatively sliding manner through a thread meshing effect;
the steel ball sleeve (43) is sleeved on the glass fiber reinforced plastic rod body (1) in a sliding manner and is abutted and contacted with the sliding stopping sleeve (42); the steel ball bodies are arranged in a circumferential array, each steel ball body is embedded in the steel ball sleeve (43), a transition inclined plane is arranged on the inner side of the port of the outer sleeve (2), and the steel ball bodies are tightly abutted against the transition inclined plane;
the tensile guide element (5) comprises: the inner sliding pipe (51) is coaxially arranged in the outer sleeve (2) in a relatively sliding way;
the abutting ring (52) is coaxially fixed on the inner sliding pipe (51), and the abutting ring (52) can be in limited abutting with the resistance stabilizing component (4) after the resistance stabilizing component fails;
the positioning shaft tube (53) is coaxially arranged in the outer sleeve (2) in a relatively sliding manner, inner sliding positions (57) are symmetrically arranged on the positioning shaft tube (53) in the left-right direction, a pin shaft piece (55) is correspondingly fixed on the inner sliding tube (51), and the pin shaft piece (55) is arranged in the inner sliding positions (57) in a sliding manner; the inner spring (54) is circumferentially distributed in the positioning shaft tube (53), and the other end of the inner spring (54) is abutted and contacted with the inner sliding tube (51);
the inner slide position (57) is constructed in a herringbone structure, so that the inner slide pipe (51) synchronously carries out local deflection in vertical displacement, and a limit spring (56) is radially connected between the positioning shaft pipe (53) and the inner slide pipe (51).
2. The underground coal mine glass fiber reinforced plastic large-deformation support anchor rod as claimed in claim 1, which is characterized in that: the calibration offset assembly (6) comprises: a frame expanding plate (61),
the drag reduction springs (62) are vertically and symmetrically connected between the expanding frame plate (61) and the outer support disc (3);
the inner shaft brackets (63) are symmetrically and rotatably connected to the outer support disc (3), and the other ends of the inner shaft brackets (63) are respectively connected to the expanding frame plates (61) in a staggered manner, so that the inner shaft brackets (63) are in an X shape;
the fixed shaft sleeve (64) is rotatably connected to the outer supporting disc (3) and is positioned at each inner shaft bracket (63);
the inner sliding sleeve (65) can be arranged on the expanding frame plate (61) in a relatively rotating and symmetrical mode, a connecting rod (66) is arranged in the inner sliding sleeve (65) in a limiting and sliding mode, one end of the connecting rod (66) extends into and is fixed in the fixed shaft sleeve (64), and the other end of the connecting rod (66) penetrates through the expanding frame plate (61) and then is in threaded sleeve connection with an outer nut;
and the supporting spring (67) is sleeved outside the connecting rod (66) and is positioned between the inner sliding sleeve (65) and the fixed shaft sleeve (64).
3. The underground coal mine glass fiber reinforced plastic large-deformation support anchor rod as claimed in claim 1, which is characterized in that: the outer sleeve (2) is constructed into a two-section structure, and the longitudinal section of one end of the outer sleeve extending into the coal mine surrounding rock is of an arc-shaped bending structure; the outer sleeve (2) is further sleeved with a stop ring piece (22), and an elastic layer (23) is embedded in the stop ring piece (22) and used for circumferentially and elastically wrapping the glass fiber reinforced plastic rod body.
4. The underground coal mine glass fiber reinforced plastic large-deformation support anchor rod as claimed in claim 1, which is characterized in that: further comprising: the tightening sleeve (59) is coaxially fixed at one end of the positioning shaft tube (53) far away from the inner sliding tube (51);
the side frames (7) are arranged in a plurality of circles, one end of each side frame (7) is hinged in the outer sleeve (2), and the other end of each side frame (7) is connected to the outer sleeve (2) in a sliding mode;
a connecting spring (58) arranged between the lateral frame (7) and the outer sleeve (2).
5. The underground coal mine glass fiber reinforced plastic large-deformation support anchor rod as claimed in claim 4, wherein: the longitudinal section of side frame (7) is the arc structure, just reduce the one end of cover (59) with side frame (7) are offseted and are leaned on the contact, side frame (7) adopt high-elastic pressure plastic material.
6. The underground coal mine glass fiber reinforced plastic large-deformation support anchor rod as claimed in claim 5, wherein: the contact surface of the lateral frame (7) and the tightening sleeve (59) is also provided with a filing structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210276573.1A CN114635731B (en) | 2022-03-21 | 2022-03-21 | Coal mine underground glass fiber reinforced plastic large-deformation support anchor rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210276573.1A CN114635731B (en) | 2022-03-21 | 2022-03-21 | Coal mine underground glass fiber reinforced plastic large-deformation support anchor rod |
Publications (2)
| Publication Number | Publication Date |
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| CN114635731A CN114635731A (en) | 2022-06-17 |
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| CN203296794U (en) * | 2013-04-25 | 2013-11-20 | 安徽理工大学 | Yielding extensible fiber reinforced plastic anchor rod |
| CN206487498U (en) * | 2017-02-17 | 2017-09-12 | 河南理工大学 | A kind of mining permeable early warning anchor pole |
| CN107747500A (en) * | 2017-11-14 | 2018-03-02 | 缪协兴 | A kind of pressure-relieving achor bar |
| CN108868852A (en) * | 2018-08-22 | 2018-11-23 | 缪协兴 | A kind of yield supporting anchor pole |
| CN108868853A (en) * | 2018-08-22 | 2018-11-23 | 缪协兴 | One kind allows pressing glass steel anchor pole |
| CN208870621U (en) * | 2018-08-27 | 2019-05-17 | 神木县隆德矿业有限责任公司 | A kind of anchor rod pallet board apparatus for correcting |
| CN109915188B (en) * | 2019-04-16 | 2023-01-20 | 中国矿业大学 | High-strength stable-resistance detachable-pressure recovery anchor rod and surrounding rock deformation monitoring method |
| CN109931085A (en) * | 2019-04-16 | 2019-06-25 | 中国矿业大学 | A kind of steady resistance energy-absorbing glass fibre reinforced plastics rockbolts with application pretightning force function |
| CN113464185B (en) * | 2021-08-26 | 2023-10-27 | 中铁二十五局集团第四工程有限公司 | Recoverable yielding anchor rod and method for reinforcing rock mass by using same |
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