Anchoring agent and anchor rod integrated self-expansion device and implementation process thereof

Abstract

The invention discloses an anchoring agent and anchor rod integrated self-expansion device and an implementation process thereof, and belongs to the technical field of coal mine tunnel supporting. The self-expansion device comprises an anchor rod and an anchoring agent body, the end of the anchor rod is connected with a sleeve assembly, the anchoring agent body is arranged in the sleeve assembly, the sleeve assembly is connected with a self-expansion mechanism, the self-expansion mechanism is provided with an expansion component, and the self-expansion mechanism is connected with the end of the anchor rod. The sleeve assembly comprises a channel used for communicating an anchoring agent with the outside and an expansion matching part matched with the expansion component. The device is simple in structure and easy and convenient to install, the space for containing the anchoring agent body is formed in the sleeve assembly, the anchoring agent is wholly wrapped in the sleeve assembly, and the anchoring agent is prevented from being broken in advance when pushed; and through mutual cooperation of the self-expansion mechanism and the sleeve assembly, the front end of the device can be subjected to self-expansion, the anchoring effect of the anchor rod is improved, the standard process operation of anchor rod supporting is improved, and the underground roadway supporting effect is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of coal mine tunnel support, and more specifically, relates to an anchoring agent and anchor rod integrated self-expansion device and an implementation process thereof. Background Art

[0002] In the production and construction process of coal mines, anchor rods are the most basic component of coal mine tunnel support. As a tensile member that penetrates deep into the stratum, the anchor rod is connected to the engineering structure at one end and penetrates deep into the stratum at the other end. Through its special structure and bonding effect, it combines the surrounding rock with the stable rock mass, producing a suspension effect, a combined beam effect, and a reinforcement effect to achieve the purpose of support. In coal mine tunnel support, the surrounding rock of the tunnel is bound together by anchor rods, so that the surrounding rock supports itself, thereby ensuring the stability of the mine tunnel and underground engineering surrounding rock.

[0003] In the process of using anchor rods, they are usually used in combination with anchoring agents. The current process is: workers put the anchoring agents into the pre-prepared holes, and then the workers screw the anchor rods in. In the process of placing anchoring agents, it is difficult to smoothly put the anchoring agents into the pre-drilled holes due to factors such as damaged coal walls, unclean hole cleaning, and insufficient uprightness of the anchoring agent rolls. This step is time-consuming and labor-intensive, and it is difficult to achieve unified standards. The operation is cumbersome and inconsistent with the standardized production concept of mine production safety specifications. Summary of the invention

[0004] The present invention aims at solving the technical problems existing in the prior art and provides an anchoring agent and anchor rod integrated self-expansion device and its implementation process.

[0005] In order to solve the above technical problems, the present invention first provides an anchor-bolt integrated self-expanding device, including an anchor and an anchor body, the end of the anchor is connected to a sleeve assembly, the anchor body is arranged in the sleeve assembly, the sleeve assembly is connected to a self-expanding mechanism, the self-expanding mechanism is provided with an expansion component, the self-expanding mechanism is connected to the end of the anchor, and the sleeve assembly includes a channel for the anchor to communicate with the outside, and an expansion fitting part adapted to the expansion component.

[0006] Preferably, the sleeve assembly comprises an outer sleeve and an inner sleeve, the end of the inner sleeve is arranged on the inner side of the outer sleeve and connected to the outer sleeve, and a covering space for accommodating the anchor body is provided between the outer sleeve and the inner sleeve.

[0007] Preferably, the outer sleeve is detachably connected to the inner sleeve, and the end of the anchor rod passes through the inner sleeve and is movably connected to the end of the outer sleeve;

[0008] The outer sleeve comprises an outer sleeve body, on which is provided a sleeve connecting portion matched with the inner sleeve and a connecting portion connecting the inner space of the sleeve with the outer space; an expansion fitting portion is arranged on the outer sleeve body, on which is provided an expansion space for the expansion component.

[0009] Preferably, one end of the outer sleeve body away from the inner sleeve is a closed structure, and the end of the inner sleeve is clamped on the inner circumference of the outer sleeve body;

[0010] The connecting parts are evenly distributed along the circumference of the outer sleeve, and are provided with anchor outlet holes, which penetrate the outer sleeve body and are connected with the interior of the outer sleeve body. The self-expansion mechanism is arranged on the inner circumference of the outer sleeve body, and the self-expansion mechanism can expand and retract radially.

[0011] Preferably, the inner sleeve is a cylindrical structure with a hollow interior and openings at both ends. The inner circumference of the first end of the inner sleeve is threadedly connected to the anchor rod, and the second end of the inner sleeve is connected to the outer sleeve. The second end of the inner sleeve has radial telescopic freedom.

[0012] Preferably, a flow blocking mechanism is provided in the sleeve assembly, the flow blocking mechanism has radial telescopic freedom, the flow blocking mechanism is arranged between the outer periphery of the anchor body and the inner periphery of the sleeve assembly, and the flow blocking mechanism is fittedly connected to the sleeve assembly so that the flow blocking mechanism and the sleeve assembly form a local sealing structure.

[0013] Preferably, the self-expanding mechanism comprises a sleeve connecting portion and an anchor connecting portion, the sleeve connecting portion abuts against the sleeve assembly, the radial dimension of the anchor connecting portion is greater than the diameter of the anchor, and the anchor is movably connected to the anchor connecting portion;

[0014] The expansion member is arranged between the sleeve connection part and the anchor connection part, and the anchor connection part can move axially, thereby driving the expansion member to move radially in a telescopic manner.

[0015] Preferably, the expansion member includes a first expansion portion connected to the sleeve connection portion and a second expansion portion connected to the anchor connection portion, the first expansion portion and the second expansion portion are movably connected, and both the first expansion portion and the second expansion portion are adaptively connected to the expansion fitting portion.

[0016] Preferably, the anchor rod is detachably connected to the sleeve assembly, the anchor rod passes through the sleeve assembly and is connected to an anchor body inside the sleeve assembly, an anchor body is provided with an anchor, and a pressure detection mechanism and a pressure warning mechanism are connected to the self-expansion mechanism.

[0017] Furthermore, the present invention also provides an implementation process of an anchoring agent and anchor rod integrated self-expansion device, comprising:

[0018] Drilling: Drill holes in the underground tunnels to be supported;

[0019] Clear the hole;

[0020] Assemble the device; assemble and install the anchor bolt and anchor agent integrated device, put the flow blocking mechanism into the inner sleeve, then put the anchor agent body into the flow blocking mechanism, then insert the inner sleeve and the flow blocking mechanism into the bottom of the outer sleeve to realize the assembly of the inner and outer sleeves, screw the anchor bolt into the inner sleeve to realize the integrated connection between the anchor bolt and the sleeve assembly; put the front end of the device sleeve assembly corresponding to the anchor bolt hole, and push the device as a whole into the bottom of the anchor bolt hole;

[0021] Anchoring agent pushes; drives the anchor rod to rotate and pressurize to go deeper into the borehole, the anchor rod pierces and stirs the anchor agent body in the sleeve assembly, the anchor agent flows out of the sleeve assembly to anchor the external space, as the anchor rod continues to rotate and go deeper, the expansion component of the self-expansion mechanism is pressed to expand outward to press the tunnel rock wall, the pressure detection mechanism is squeezed by the anchor rod, and transmits a signal to the pressure warning mechanism, when the preset pressure value is reached, the pressure warning mechanism gives an alarm;

[0022] Fix; after the anchoring agent solidifies, fix the anchor rod installation mechanism to complete the anchor rod anchoring installation.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] The present invention has a simple structure and is easy to install. The anchor rod and the anchor are integrated into one by a sleeve assembly. A space for accommodating the anchor body is provided inside the sleeve assembly, so that the anchor is entirely covered in the sleeve assembly, reducing the difficulties caused by damage in the borehole or insufficient uprightness of the anchor body when manually pushing the anchor, and avoiding premature rupture of the anchor when pushing. Moreover, the self-expansion mechanism cooperates with the sleeve assembly to self-expand the front end of the device, thereby increasing the anchoring effect of the anchor rod. Not only is the installation process simple and the construction steps simplified, the standard process operation of the anchor rod support is improved, and the support effect of the underground tunnel is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0026] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the integrated self-expanding device of the present invention;

[0027] Figure 2 It is a structural schematic diagram of an outer sleeve embodiment of the present invention;

[0028] Figure 3 It is a schematic diagram of the three-dimensional structure of an outer sleeve embodiment of the present invention;

[0029] Figure 4 It is a schematic diagram of the main structure of an outer sleeve embodiment of the present invention;

[0030] Figure 5 It is a schematic diagram of the three-dimensional structure of an inner sleeve embodiment of the present invention;

[0031] Figure 6 It is a schematic diagram of the main structure of an inner sleeve embodiment of the present invention;

[0032] Figure 7 It is a structural schematic diagram of an embodiment of the connection between the rubber baffle sleeve and the inner sleeve of the present invention;

[0033] Figure 8 It is a structural schematic diagram of an embodiment of partial connection between a rubber choke sleeve and a sleeve assembly of the present invention;

[0034] Fig. 9 It is a schematic diagram of the three-dimensional structure of an embodiment of a rubber spoiler sleeve of the present invention;

[0035] Fig.10 It is a cross-sectional schematic diagram of an embodiment of a rubber spoiler sleeve of the present invention;

[0036] Fig.11 It is a schematic diagram of the three-dimensional structure of an embodiment of the self-expansion mechanism of the present invention;

[0037] Fig.12 It is a structural schematic diagram of an embodiment of the connection between the self-expanding mechanism and the anchor rod of the present invention;

[0038] Fig.13 It is a structural schematic diagram of an embodiment of the expansion member action direction of the present invention;

[0039] Fig.14 It is a schematic diagram of installation and anchoring of an embodiment of the integrated self-expanding device of the present invention;

[0040] Fig.15 It is a schematic diagram of the assembly of an embodiment of the integrated self-expanding device of the present invention.

[0041] Explanation of symbols in the figure:

[0042] 1. Anchor rod; 2. Anchoring agent body; 3. Sleeve assembly; 4. Self-expansion mechanism; 41. Expansion member; 411. First expansion part; 412. Second expansion part; 42. Solid disk; 43. Open cylinder; 44. Pressure sensor; 45. Speaker; 5. Outer sleeve; 51. Outer sleeve body; 52. Sleeve connecting hole; 53. Anchoring agent outlet hole; 54. Expansion hole; 6. Inner sleeve; 61. Inner sleeve petals; 62. Connecting protrusion; 63. Internal thread; 7. Rubber flow-blocking sleeve; 71. Disc-shaped outer edge; 72. Outer edge groove; 8. Anchor rod tray; 9. Tray gasket; 10. Slurry stop plug; 11. Nut. DETAILED DESCRIPTION

[0043] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application more clearly understood, the following is a further detailed description of an anchor bolt integrated self-expansion device and its implementation process provided by the present application in combination with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0044] See also Figure 1 An embodiment of the present invention provides an anchor bolt integrated self-expansion device, comprising an anchor bolt 1 and an anchor body 2, wherein the end of the anchor bolt 1 is connected to a sleeve assembly 3, the anchor body 2 is arranged in the sleeve assembly 3, a self-expansion mechanism 4 is connected to the sleeve assembly 3, the self-expansion mechanism 4 is provided with an expansion member 41, the self-expansion mechanism 4 is connected to the end of the anchor bolt 1, the sleeve assembly 3 comprises a channel for interconnecting the anchor with the outside, and an expansion fitting portion adapted to the expansion member 41.

[0045] The present invention has a simple structure and is easy to install. The anchor rod and the anchor are integrated through the sleeve assembly 3. A space for accommodating the anchor body 2 is provided inside the sleeve assembly 3, so that the anchor is entirely covered in the sleeve assembly 3, reducing the difficulties caused by damage in the borehole or insufficient uprightness of the anchor body when manually pushing the anchor, and avoiding premature rupture of the anchor when pushing. Moreover, the self-expansion mechanism 4 cooperates with the sleeve assembly 3 to self-expand the front end of the device, thereby increasing the anchoring effect of the anchor rod 1. Not only is the installation process simple and the construction steps simplified, the standard process operation of the anchor rod support is improved, and the support effect of the underground tunnel is improved.

[0046] In this embodiment, the end of the sleeve assembly 3 is the insertion end of the drill hole during installation, the anchor rod 1 is detachably connected to the sleeve assembly 3, the sleeve assembly 3 includes an outer sleeve 5 and an inner sleeve 6, the end of the inner sleeve 6 is arranged on the inner side of the outer sleeve 5 and is connected to the outer sleeve 5, the outer sleeve 5 and the inner sleeve 6 are detachably connected, and a covering space for accommodating the anchor body 2 is provided between the outer sleeve 5 and the inner sleeve 6, and the anchor is arranged in the anchor body 2.

[0047] Specifically, Figure 2 As shown, the outer sleeve 5 is a cylindrical structure with one end closed and the other end open and hollow inside. The end of the outer sleeve 5 corresponding to the rock wall is a closed end, and the end of the outer sleeve 5 connected to the inner sleeve 6 is an open end. During assembly, the end of the anchor rod 1 passes through the inner sleeve 6 and the outer sleeve 5 in sequence and is movably connected to the end of the outer sleeve 5.

[0048] In this embodiment, Figure 3 , Figure 4As shown, the outer sleeve 5 includes an outer sleeve body 51, the upper end of the outer sleeve body 51 away from the inner sleeve 6 is a closed structure and the lower part is open, and the end of the inner sleeve 6 is clamped on the inner circumference of the outer sleeve body 51; the outer sleeve body 51 is provided with a sleeve connecting part that cooperates with the inner sleeve 6 and a connecting part that connects the internal space of the sleeve with the external space, the expansion matching part is arranged on the outer sleeve body 51, the self-expansion mechanism 4 is arranged in the outer sleeve body 51, the outer sleeve body 51 is provided with an expansion space for the expansion member 41, and the expansion member 41 is connected with the outside through the outer sleeve body 51.

[0049] Specifically, the outer sleeve body 51 is a cylindrical shell structure, and the sleeve connecting part is arranged on the lower periphery of the outer sleeve body 51. The sleeve connecting part includes a sleeve connecting hole 52. The sleeve connecting hole 52 is a square structure. The outer sleeve 5 is connected to the inner sleeve 6 through the sleeve connecting hole 52, thereby realizing the assembly of the inner and outer sleeves and realizing the accommodation of the anchor body 2 in the internal space of the sleeve assembly 3.

[0050] The connecting portion is arranged at the axial upper part of the sleeve connecting hole 52, and the connecting portion is arranged on the circumferential outer side of the outer sleeve body 51. The connecting portion includes an anchor outlet hole 53. The anchor outlet hole 53 penetrates the side wall of the outer sleeve body 51 and is connected with the interior of the outer sleeve body 51. The anchor outlet hole 53 is a circular through hole structure. The anchor outlet hole 53 is a channel for the anchor to flow out when the anchor body 2 is squeezed and broken by the anchor rod 1. The anchoring effect of the anchor rod anchoring section is realized by the outflowing anchor.

[0051] In this embodiment, the expansion fitting portion is arranged at the upper part of the outer sleeve body 51 and is arranged axially above the anchor outlet hole 53. The expansion fitting portion includes an expansion hole 54. The expansion hole 54 is arranged on the outer peripheral side of the outer sleeve body 51, and the expansion hole 54 is a vertically arranged rectangular through hole structure. The self-expansion mechanism 4 is arranged on the inner peripheral side of the expansion hole 54. The structure of the expansion hole 54 is adapted to the size of the expansion component 41 of the self-expansion mechanism. The expansion hole 54 is a spatial channel for the expansion component 41 to expand outward.

[0052] Furthermore, the sleeve connecting hole 52, the anchor outlet hole 53, and the expansion hole 54 are arranged in sequence from top to bottom along the axial direction of the outer sleeve body 51, and are all hole structures arranged around the outer circumference of the outer sleeve body 51. There are multiple sleeve connecting holes 52, anchor outlet holes 53, and expansion holes 54, which are evenly distributed along the circumference of the outer sleeve body 51. In this embodiment, the number of various holes is as follows: 4 sleeve connecting holes 52 are arranged along the circumferential direction, 24-32 anchor outlet holes 53 are arranged, 4 of which are arranged along the axial direction and 6-8 are arranged along the circumferential direction, and 4 expansion holes 54 are arranged along the circumferential direction.

[0053] Furthermore, as a preferred embodiment of the present invention, the specific number of three groups of hole structures for different purposes arranged in sequence along the axial direction and the specific setting shape of each hole can be adapted and adjusted according to actual use requirements.

[0054] In this embodiment, the inner sleeve 6 is a cylindrical structure with a hollow interior and open ends. The inner circumference of the first end of the inner sleeve 6 is threadedly connected to the anchor rod 1, and the second end of the inner sleeve 6 is connected to the outer sleeve 5. The second end of the inner sleeve 6 has radial telescopic freedom.

[0055] Specifically, Figure 5 As shown, the inner sleeve 6 is an integral cylindrical structure consisting of an upper and lower structure, the upper and lower structures are integrally welded and processed, and both structures are cylindrical, the upper cylinder has a larger diameter than the lower cylinder, the upper cylinder is connected to the lower cylinder, and the anchor rod 1 passes through the inner sleeve 6 from the lower cylinder and is connected to the outer sleeve 5.

[0056] An inner sleeve petal 61 is provided at the upper portion of the inner sleeve 6. The inner sleeve petal 61 is a petal structure arranged at the end of the cylinder. The petal structure is a vertically arranged plate-like structure with an arc. There are four petal structures in total, which are evenly distributed along the circumference of the inner sleeve 6, and gaps are provided between adjacent petal structures. Since the petal structure has a certain elasticity, it has a certain radial degree of freedom. The inner sleeve petal 61 can achieve a certain degree of inward contraction under the action of external force, thereby achieving a close connection with the inner sleeve 6 and the outer sleeve 5.

[0057] Furthermore, a connecting protrusion 62 is provided on the outer peripheral side of the petal structure, and a connecting protrusion 62 is provided on the outer side of each petal structure, and the shape and number of the connecting protrusion 62 are matched with the shape and number of the sleeve connecting hole 52 on the outer sleeve 5. The connecting protrusion 62 can be snapped into the sleeve connecting hole 52 of the outer sleeve 5, thereby realizing the assembly of the inner and outer sleeves.

[0058] Furthermore, Figure 6 As shown, the lower inner circumferential side of the inner sleeve 6 is provided with an internal thread 63 arranged along its circumference, and the anchor rod 1 can be screwed in before construction, so as to realize the integrated assembly of the inner sleeve 6 and the anchor rod 1 before construction.

[0059] Furthermore, as a preferred embodiment of the present invention, the specific structure and setting quantity of the connecting protrusion 62 on the inner sleeve 6 can be matched and set according to the sleeve connecting hole structure of the outer sleeve 5 and its own usage requirements, and the number of petal structures on the outer sleeve can also be adjusted as needed.

[0060] In this embodiment, Figure 1As shown, a flow blocking mechanism is provided in the sleeve assembly 3, and the flow blocking mechanism has radial telescopic freedom. The flow blocking mechanism is arranged between the outer periphery of the anchor body 2 and the inner periphery of the sleeve assembly 3. The flow blocking mechanism is fitted and connected with the sleeve assembly 3, so that the flow blocking mechanism and the sleeve assembly 3 form a local sealing structure.

[0061] Specifically, Figure 7-Figure 9 As shown, the flow blocking mechanism includes a rubber flow blocking sleeve 7, which is arranged on the inner side of the inner sleeve 6 and the end of which is fitted and connected with the outer sleeve 5; the rubber flow blocking sleeve 7 is a cylindrical structure with a hollow interior and an open end, and the rubber flow blocking sleeve 7 is made of rubber as a whole, and has elastic and insulating properties. The outer diameter of the rubber flow blocking sleeve 7 is smaller than the upper inner diameter of the inner sleeve 6, and a section of the rubber flow blocking sleeve 7 connected to the outer sleeve 5 has a convex disc-shaped outer edge 71, and the disc-shaped outer edge 71 is integrally arranged with the main body structure and is made of rubber. The rubber flow blocking sleeve 7 is arranged in the inner sleeve 6, and the disc-shaped outer edge 71 at the upper end abuts against the petal structure of the end portion of the inner sleeve 6, and the disc-shaped outer edge 71 abuts against the inner side of the outer sleeve 5, so that there is no gap at the abutment of the inner side of the sleeve assembly 3 to avoid overflow of the anchoring agent.

[0062] Furthermore, Fig. 9 , Fig.10 As shown, in the present embodiment, the center of the disc-shaped outer edge 71 has an outer edge groove 72, and two outer edge grooves 72 are provided, which are respectively arranged on the upper end surface and the lower end surface of the disc-shaped outer edge 71, and the outer edge grooves 72 are all arranged along the circumference of the disc-shaped outer edge 71, forming a circular groove structure. By setting the outer edge grooves 72, the disc-shaped outer edge 71 made of rubber material can be deflected downward, so as to extend outward to wrap around the petals of the inner sleeve and fill the gap between the petals and the inner wall of the outer sleeve 5. Since the material is rubber, the gathering effect of the inner sleeve petals 61 is not affected, and the anchor is prevented from overflowing from the inner sleeve petals 61 after the anchor body 2 is broken, thereby affecting the anchoring effect.

[0063] In this embodiment, the self-expanding mechanism 4 is arranged on the inner circumference side of the outer sleeve body 51, and the self-expanding mechanism 4 can expand and retract radially. In the original unexpanded state, the circumferential diameter of the self-expanding mechanism 4 is smaller than the outer shell diameter of the outer sleeve body 51, and the self-expanding mechanism 4 is matched and connected with the outer sleeve 5 to form a storage space for the anchoring agent and a radial expansion space for the expansion member 41.

[0064] Specifically, Figure 11-13 As shown, the self-expanding mechanism 4 includes a sleeve connecting portion and an anchor connecting portion. The sleeve connecting portion abuts against the sleeve assembly 3. The radial dimension of the anchor connecting portion is larger than the diameter of the anchor 1. The anchor 1 is movably connected to the anchor connecting portion.

[0065] The sleeve connecting part includes a solid disc 42, which is arranged at the upper part. The diameter of the solid disc 42 is the same as the inner diameter of the outer sleeve body 51, so that the force is applied by the abutment between the solid disc 42 and the inner side of the upper end of the outer sleeve 5; the anchor rod connecting part includes an open cylinder 43, which is arranged at the lower part of the solid disc 42. The open cylinder 43 is a round cover structure with a solid top and an opening at the lower end. The outer diameter of the open cylinder 43 is the same as that of the solid disc 42, and the inner diameter of the open cylinder 43 matches the size of the anchor rod 1. The inner wall of the open cylinder 43 is a smooth structure. When the anchor rod 1 is drilled into the inner side of the outer sleeve 5 through the inner sleeve 6 and connected with the self-expansion mechanism 4, the inner wall structure of the open cylinder 43 can make the anchor rod 1 not be affected by the anchor rod knob force when drilling, but only be affected by the upward pressure of the anchor rod, so that the pressure can be transmitted axially.

[0066] In this embodiment, the solid disk 42 and the open cylinder 43 are arranged parallel to each other, and an expansion space is provided between the two structures. The expansion member 41 is arranged between the lower part of the solid disk 42 and the upper end surface of the open cylinder 43. Under the action of the rotating abutment pressure of the anchor rod 1, the open cylinder 43 and the anchor rod 1 are abutted against force and move axially, and the open cylinder 43 and the solid disk 42 can approach each other, so that the expansion member 41 can be subjected to force and move radially.

[0067] Specifically, the size of the expansion member 41 matches the opening size of the expansion hole 54 on the outer sleeve body 51. The expansion member 41 includes a first expansion part 411 connected to the sleeve connecting part and a second expansion part 412 connected to the anchor connecting part. The first expansion part 411 is movably connected to the second expansion part 412. The first expansion part 411 and the second expansion part 412 are both adaptably connected to the expansion hole 54 of the expansion matching part.

[0068] The first expansion part 411 and the second expansion part 412 are both square expansion sheet structures with a certain thickness. The width of the expansion sheet structure is adapted to the width of the expansion hole 54 at the upper end of the outer sleeve body 51, and the first expansion part 411 and the second expansion part 412 are both arranged along the axial direction. The upper end of the first expansion part 411 is connected to the solid disk 42, and the lower end of the second expansion part 412 is connected to the upper end of the open cylinder 43. The lower end of the first expansion part 411 and the upper end of the second expansion part 412 are hinged to each other, so that when the anchor rod 1 is screwed upward, under the action of pressure, the solid disk 42 and the open cylinder 43 approach each other, and the first expansion part 411 and the second expansion part 412 in the middle are movably hinged and expand outward along the expansion hole 54 of the outer sleeve 5, thereby playing an auxiliary anchoring role.

[0069] Furthermore, in this embodiment, if Fig.12As shown, the expansion member 41 is provided with four interconnected first expansion parts 411 and second expansion parts 412 . The expansion members 41 are evenly distributed along the circumference of the solid disk 42 and are arranged on the outer circumference. An accommodating space is provided inside the expansion member 41 .

[0070] In this embodiment, the anchor body 2 is arranged in the inner space of the sleeve assembly 3 on the axial lower side of the self-expansion mechanism 4, and the anchor rod 1 is screwed into the inner sleeve 6 and the outer sleeve 5 in sequence, and then connected to the anchor body 2 therein. When the anchor body 2 is compressed and ruptured, the anchor flows out through the anchor outlet hole 53 on the outer sleeve 5, and then the anchor rod 1 continues to be screwed in and abuts against the open cylinder 43 of the self-expansion mechanism 4, realizing axial force transmission, and then driving the expansion member 41 to retract and expand outward.

[0071] Furthermore, the outer membrane of the anchor body 2 is made of polyester film material. When the anchor rod 1 is drilled into by the anchor driving machine, the anchor rod will squeeze out the anchor. When the anchor rod 1 rotates in, it punctures the medicine bag of the anchor body, and the anchor flows out. The expansion member 41 expands and presses against the hole wall. At this time, the anchor driving machine does not withdraw, and will withdraw only after the anchor solidifies. Before solidification, the anchor driving machine prevents the anchor rod from sliding out and plays a limiting role. After solidification, the anchor surrounds the external expansion mechanism and plays a limiting role.

[0072] The expansion member 41 is made of metal, which is consistent with the material of the entire device and can be adjusted according to the actual use environment. Moreover, the connection between the expansion member 41 and the upper and lower components can be a fixed connection or a movable hinge. The specific connection relationship only needs to enable the expansion member 41 to expand outward.

[0073] Furthermore, in this embodiment, the self-expansion mechanism 4 is connected with a pressure detection mechanism and a pressure warning mechanism. The pressure detection mechanism is provided with a pressure sensor 44, which is arranged at the inner upper end of the open cylinder 43 and abuts against the anchor rod 1 when the anchor rod 1 is screwed in, so as to bear the pressure. The pressure warning mechanism is arranged in the expansion space between the solid disc 42 and the open cylinder 43, and the pressure warning mechanism is provided with a speaker 45, which is matched and connected with the pressure sensor 44. When the anchor rod 1 rotates and pressurizes to go deep into the borehole, the anchor rod 1 pierces and stirs the anchor body 2 containing the anchor in the sleeve assembly 3, and the anchor flows out from the circular hole in the upper part of the outer sleeve and anchors the outside. The anchor rod 1 rotates and goes deep, and the self-expansion mechanism 4 is pressed and expands outward, pressing the rock wall; at the same time, the pressure sensor 44 is squeezed by the anchor rod 1 and transmits a signal to the speaker 45. When the preset pressure value is reached, the speaker 45 makes a sound to remind the operator to stop screwing the anchor rod 1.

[0074] In this embodiment, Figure 1As shown, when the anchor rod 1 is screwed into place, the anchor rod is fixed to the supporting tunnel by an anchor rod installation mechanism matching the anchor rod 1. The anchor rod installation mechanism includes an anchor rod tray 8, a tray gasket 9 and a grout stopper 10. The anchor rod tray 8 and the tray gasket 9 are fixed to the anchor rod 1 by a nut 11.

[0075] Furthermore, the present invention also provides an implementation process of an anchoring agent and anchor rod integrated self-expansion device, comprising:

[0076] Drilling: Drill holes in the underground tunnels to be supported;

[0077] Clear the hole;

[0078] Assemble the device; assemble and install the anchor bolt and anchor agent integrated device, put the flow blocking mechanism into the inner sleeve 6, then put the anchor agent body 2 into the flow blocking mechanism, and then insert the inner sleeve 6 and the flow blocking mechanism into the bottom of the outer sleeve 5 to realize the assembly of the inner and outer sleeves, screw the anchor bolt 1 into the inner sleeve 6, and realize the integral connection between the anchor bolt 1 and the sleeve assembly 3; put the front end of the device sleeve assembly 3 corresponding to the anchor bolt hole, and push the device as a whole into the bottom of the anchor bolt hole;

[0079] Anchoring agent is pushed; the anchor rod 1 is driven to rotate and pressurize to go deeper into the borehole, the anchor rod 1 punctures and stirs the anchoring agent body 2 in the sleeve assembly 3, and the anchoring agent flows out of the sleeve assembly 3 to anchor the external space. As the anchor rod continues to rotate and go deeper, the expansion member 41 of the self-expansion mechanism 4 is pressed to expand outward to press the rock wall of the tunnel, and the pressure detection mechanism is squeezed by the anchor rod and transmits a signal to the pressure warning mechanism. When the preset pressure value is reached, the pressure warning mechanism gives an alarm;

[0080] Fix; after the anchoring agent solidifies, fix the anchor rod installation mechanism to complete the anchor rod anchoring installation.

[0081] Specifically, Fig.14 The installation and anchoring schematic diagram of the anchor bolt anchoring agent integrated self-expansion device provided for this implementation, the specific implementation process is as follows:

[0082] S1. Drilling: Workers use tools such as anchor drills to drill holes in locations such as the coal wall of the tunnel that need support.

[0083] S2. Clean the hole: clean the drilled hole, remove the residue or mud slurry in the hole, and ensure the hole is clean.

[0084] If it is a wet hole, clean it until clean water flows out; if it is a dry hole, use an air compressor to clean it.

[0085] S3. Installation of the device: Assemble and install the integrated anchor bolt and anchoring agent device, place the front end of the device sleeve assembly against the anchor bolt hole, and push the entire device into the bottom of the anchor bolt hole.

[0086] In this embodiment, Fig.15 As shown, the device assembly process is:

[0087] The staff puts the rubber baffle sleeve 7 into the inner sleeve 6, ensuring that the outer edge of the rubber baffle sleeve 7 wraps the top of the petal of the inner sleeve 6, and then puts the anchor body 2 into the rubber baffle sleeve 7, presenting a stacking order from inside to outside, which is the anchor body 2, the rubber baffle sleeve 7, and the inner sleeve 6 respectively; secondly, apply force to the outer side of the inner sleeve petals to make the petals gather together, and the rubber baffle sleeve 7 wrapped therein follows the change and protects the anchor body 2 from being scratched by the petals of the inner sleeve 6; align the gathered inner sleeve petals with the sleeve connecting holes 52 of the outer sleeve 5 and insert them into the bottom of the outer sleeve, so that the connecting protrusions 62 on the outer surface of the inner sleeve petals are inserted into the sleeve connecting holes 52 of the outer sleeve 5, so as to realize the assembly of the inner and outer sleeves; finally, screw the anchor rod 1 into the inner sleeve 6, and realize the combined installation of the sleeve assembly 3 and the anchor rod 1 through the bottom thread of the inner sleeve 6, thereby realizing the integrated connection of the anchor rod.

[0088] S4, push the anchoring agent; drive the anchoring equipment, rotate and pressurize the anchoring agent to go deeper into the borehole, the anchoring agent body 2 in the sleeve assembly 3 is pierced and stirred by the anchoring agent 1, and the anchoring agent flows out from the anchoring agent outlet hole 53 at the top of the outer sleeve 5 to anchor the external space. As the anchoring agent continues to rotate and go deeper, the expansion member 41 of the self-expansion mechanism 4 is pressed to expand outward and pass through the expansion hole 54 at the top of the outer sleeve 5 to press the rock wall of the tunnel. At the same time, the pressure sensor 44 is squeezed by the anchoring agent 1, and transmits a signal to the speaker 45 as a pressure warning mechanism. When the preset pressure value is reached, the speaker 45 sounds to remind the operator to stop the operation.

[0089] Furthermore, in this embodiment, the anchor drill stops screwing in the anchor after the anchor is in place, but does not withdraw temporarily to ensure that the position of the anchor does not shift until the anchoring agent solidifies.

[0090] S5, fixation; after waiting for the anchoring agent to solidify, fix the anchor installation mechanism, tighten the nut 11, fix the anchor tray 8 and the tray gasket 9, and complete the anchor installation.

[0091] The present invention provides an anchor bolt integrated self-expansion device and its implementation process, which has a simple structure and is easy to install. The anchor bolt and the anchor bolt are integrated through a sleeve assembly, and a space for accommodating the anchor bolt body is provided inside the sleeve assembly, so that the anchor bolt is entirely wrapped in the sleeve assembly, reducing the difficulty caused by damage in the borehole or insufficient uprightness of the anchor bolt body when the anchor bolt is pushed manually. The device wraps the anchor bolt as a whole, avoiding premature rupture when the anchor bolt is pushed; and the anchor bolt is rotated and pressed to go deeper. As the anchor bolt continues to go deeper, the anchor bolt enters the sleeve assembly to puncture and stir the anchor bolt body containing the anchor bolt in the sleeve assembly, and the anchor bolt flows out from the circular hole on the upper part of the outer sleeve and is anchored. The anchor bolt is continuously rotated and deepened, and the self-expansion mechanism is compressed and expanded outward, compressing the rock wall, playing an auxiliary anchoring role. At the same time, the pressure sensor is squeezed by the anchor bolt and transmits a signal to the speaker. When the preset pressure value is reached, the speaker sounds a signal to remind the operator to stop screwing the anchor bolt.

[0092] The present invention can self-expand the front end of the device by cooperating with the sleeve assembly through the self-expansion mechanism and the sleeve assembly, and has the automatic indication capability of a certain preset pressure, thereby supplementing and strengthening the anchoring effect of the anchor rod; the entire device can be pre-installed, which not only has a simple installation process and simplified construction steps, but also has fewer overall components, a reliable and simple structure, low cost, and no need for cumbersome installation steps. It is easy for workers to get started, which is convenient for large-scale promotion and use in underground support operations, improves the standard process operation of anchor rod support, saves support work time and the work intensity of underground workers, and improves the support effect of underground tunnels.

[0093] In the description of the present invention, it is necessary to understand that the orientation or positional relationship indicated by terms such as "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0094] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0095] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. An anchor bolt integrated self-expanding device, comprising an anchor bolt and an anchor bolt body, wherein the end of the anchor bolt is connected to a sleeve assembly, characterized in that: The anchor body is arranged in the sleeve assembly, and the sleeve assembly is connected to a self-expansion mechanism, the self-expansion mechanism is provided with an expansion component, the self-expansion mechanism is connected to the end of the anchor rod, and the sleeve assembly includes a channel for the anchor to communicate with the outside and an expansion fitting part adapted to the expansion component.

2. The anchoring agent and anchor rod integrated self-expansion device according to claim 1, characterized in that: The sleeve assembly includes an outer sleeve and an inner sleeve, the end of the inner sleeve is arranged on the inner side of the outer sleeve and connected to the outer sleeve, and a covering space for accommodating the anchor body is provided between the outer sleeve and the inner sleeve.

3. The anchoring agent and anchor rod integrated self-expansion device according to claim 2, characterized in that: The outer sleeve is detachably connected to the inner sleeve, and the end of the anchor rod passes through the inner sleeve and is movably connected to the end of the outer sleeve; The outer sleeve comprises an outer sleeve body, on which is provided a sleeve connecting portion cooperating with the inner sleeve and a connecting portion connecting the inner space of the sleeve with the external space; the expansion fitting portion is arranged on the outer sleeve body, on which is provided an expansion space for the expansion member.

4. The anchoring agent and anchor rod integrated self-expansion device according to claim 3, characterized in that: One end of the outer sleeve body away from the inner sleeve is a closed structure, and the end of the inner sleeve is clamped on the inner circumference of the outer sleeve body; The connecting portion is evenly distributed along the circumference of the outer sleeve, and is provided with an anchor outlet hole. The anchor outlet hole passes through the outer sleeve body and is connected with the interior of the outer sleeve body. The self-expansion mechanism is arranged on the inner circumference side of the outer sleeve body, and the self-expansion mechanism can expand and retract radially.

5. The anchoring agent and anchor rod integrated self-expansion device according to claim 2, characterized in that: The inner sleeve is a cylindrical structure with a hollow interior and open ends. The inner circumference of the first end of the inner sleeve is threadedly connected to the anchor rod, and the second end of the inner sleeve is connected to the outer sleeve. The second end of the inner sleeve has radial telescopic freedom.

6. An anchoring agent and anchor rod integrated self-expanding device according to claim 1 or 5, characterized in that: A flow blocking mechanism is provided in the sleeve assembly. The flow blocking mechanism has radial expansion and contraction freedom. The flow blocking mechanism is arranged between the outer periphery of the anchor body and the inner periphery of the sleeve assembly. The flow blocking mechanism is fitted and connected to the sleeve assembly so that the flow blocking mechanism and the sleeve assembly form a local sealing structure.

7. An anchoring agent and bolt integrated self-expanding device according to any one of claims 1 to 5, characterized in that: The self-expanding mechanism comprises a sleeve connecting portion and an anchor connecting portion, wherein the sleeve connecting portion abuts against the sleeve assembly, the radial dimension of the anchor connecting portion is greater than the diameter of the anchor, and the anchor is movably connected to the anchor connecting portion; The expansion member is arranged between the sleeve connection part and the anchor connection part, and the anchor connection part can move axially, thereby driving the expansion member to move radially.

8. The anchoring agent and anchor rod integrated self-expansion device according to claim 7, characterized in that: The expansion component includes a first expansion part connected to the sleeve connection part and a second expansion part connected to the anchor connection part. The first expansion part is movably connected to the second expansion part. Both the first expansion part and the second expansion part are adaptively connected to the expansion fitting part.

9. The anchoring agent and anchor rod integrated self-expansion device according to claim 1, characterized in that: The anchor rod is detachably connected to the sleeve assembly, and the anchor rod passes through the sleeve assembly and is connected to an anchor body inside the sleeve assembly. Anchors are arranged in the anchor body, and a pressure detection mechanism and a pressure warning mechanism are connected to the self-expansion mechanism.

10. An implementation process of an anchoring agent and anchor rod integrated self-expansion device, characterized in that: include: drilling; Drill holes in the underground tunnels to be supported; Clear the hole; Device assembly; The bolt anchoring agent integrated device is assembled and installed, the flow blocking mechanism is placed in the inner sleeve, and then the anchoring agent body is placed in the flow blocking mechanism, and then the inner sleeve and the flow blocking mechanism are inserted into the bottom of the outer sleeve to realize the assembly of the inner and outer sleeves, and the anchor rod is screwed into the inner sleeve to realize the integrated connection between the anchor rod and the sleeve assembly; the front end of the device sleeve assembly corresponds to the anchor rod hole, and the device is pushed into the bottom of the anchor rod hole as a whole; Anchoring agent pushes; drives the anchor rod to rotate and pressurize to go deeper into the borehole, the anchor rod pierces and stirs the anchor agent body in the sleeve assembly, the anchor agent flows out of the sleeve assembly to anchor the external space, as the anchor rod continues to rotate and go deeper, the expansion component of the self-expansion mechanism is pressed to expand outward to press the tunnel rock wall, the pressure detection mechanism is squeezed by the anchor rod, and transmits a signal to the pressure warning mechanism, when the preset pressure value is reached, the pressure warning mechanism gives an alarm; Fix; after the anchoring agent solidifies, fix the anchor rod installation mechanism to complete the anchor rod anchoring installation.

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