CN109869172B - Drilling-anchoring high-pressure grouting integrated anchoring device - Google Patents
Drilling-anchoring high-pressure grouting integrated anchoring device Download PDFInfo
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- CN109869172B CN109869172B CN201910250739.0A CN201910250739A CN109869172B CN 109869172 B CN109869172 B CN 109869172B CN 201910250739 A CN201910250739 A CN 201910250739A CN 109869172 B CN109869172 B CN 109869172B
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- hole
- anchor
- sleeve
- grouting
- rod body
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- 238000004873 anchoring Methods 0.000 title claims abstract description 83
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 64
- 238000002347 injection Methods 0.000 claims abstract description 46
- 239000007924 injection Substances 0.000 claims abstract description 46
- 238000005553 drilling Methods 0.000 claims abstract description 16
- 238000007789 sealing Methods 0.000 claims description 53
- 235000013290 Sagittaria latifolia Nutrition 0.000 claims description 9
- 235000015246 common arrowhead Nutrition 0.000 claims description 9
- 230000001154 acute effect Effects 0.000 claims description 6
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 4
- 229910052802 copper Inorganic materials 0.000 claims description 4
- 239000010949 copper Substances 0.000 claims description 4
- 230000003044 adaptive effect Effects 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 28
- 239000011435 rock Substances 0.000 abstract description 6
- 239000011347 resin Substances 0.000 description 9
- 229920005989 resin Polymers 0.000 description 9
- 238000010586 diagram Methods 0.000 description 4
- 238000007569 slipcasting Methods 0.000 description 4
- 230000010354 integration Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 239000003829 resin cement Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
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- Piles And Underground Anchors (AREA)
Abstract
The invention discloses an anchor device integrating drilling, anchoring and high-pressure grouting, which comprises a rotary joint and an anchor rod, wherein the rotary joint comprises a rotating shaft (13) and a sleeve (16); the anchor rod comprises a rod body (3) and an anchor head (5), a grouting through hole (132) is formed in the rotating shaft (13), an injection hole (161) is formed in the sleeve (16), the anchor head (5) is of an arrow-shaped structure, an anchor agent through hole (9) is formed in the outer wall, close to the arrow, of the anchor head, and a plug (8) is arranged at the small end part of the anchor head (5); the rotating shaft (13) is detachably connected with the rod body (3), and the grouting through hole (132) is communicated with the inside of the rod body (3). When in use, the rotating shaft (13) is connected with the rod body (3), the other end of the rotating shaft (13) is connected with the drilling machine, and the injection hole (161) is connected with high-pressure water. The high-pressure water pushes the anchoring agent package to anchor the anchoring agent, the rod body (3) and the surrounding rock. And then high-pressure water is introduced, and the plug (8) is opened by the anchoring agent so as to realize high-pressure grouting.
Description
Technical Field
The invention discloses an anchor device integrating drilling, anchoring and high-pressure grouting, and belongs to the technical field of anchor tools and anchor rod installation.
Background
The resin anchor rod is mainly used for fixing the anchor rod and surrounding rock through a resin anchoring agent, and the existing resin anchor rod mainly comprises rod bodies made of various materials, a tray, nuts and other components, and one end of each rod body is an anchor head. The material with the binding and anchoring function is an anchoring agent, the resin anchoring agent is formed by dividing and packaging two parts of resin cement and a curing agent into a roll shape, and after mixing, the rod body, the anchored coal and the anchored rock can be bonded together.
When the resin anchor rod is actually used at present, holes are punched firstly, an anchoring agent is manually installed in the holes after the holes are punched, and then the anchor rod body is driven to rotate through the anchor rod drilling machine to stir the explosive cartridge so as to realize anchoring. Because the factors such as many resin cartridges, poor roof pore-forming, tool torque are not high influence, easy inefficacy when stock is installed, the process is many simultaneously, and the operation is complicated, causes the staff to operate more difficultly. Meanwhile, the anchor rod body recorded in the Chinese patent, publication No. CN103867220A and publication No. 2014.06.18 is of a hollow structure, the inside of the anchor rod body is a medicament cavity, the mixing of the anchoring agent is realized by pushing a piston, the problem that the components of the anchoring agent are uniformly mixed can only be solved, drilling and simultaneous operation of the anchor rod cannot be realized, and grouting of the end part of the high-pressure anchor head cannot be realized.
Disclosure of Invention
The invention aims to solve the technical problems that the existing resin anchor rod cannot drill and anchor simultaneously and cannot realize high-pressure grouting of the end part.
The technical scheme adopted for solving the technical problems is as follows: drilling anchor high pressure slip casting integrative anchor device includes:
the rotary joint comprises a rotating shaft, a sleeve and a rotary sealing assembly, the rotating shaft and the sleeve are in rotary sealing connection through the rotary sealing assembly, a grouting through hole is formed in the rotating shaft, the grouting through hole comprises a radial hole and an axial hole which are communicated, one end of the radial hole, far away from the axial hole, extends out of the outer wall of the rotating shaft, the axial hole is of a blind hole structure, one end of the axial hole extends to the end face of the rotating shaft, an injection hole is formed in the sleeve, and the injection hole can be communicated with the radial hole of the grouting through hole;
the anchor rod comprises a rod body and an anchor head, and the rod body is of a hollow tubular structure; the anchor head is of an arrow-shaped structure, the arrow head part of the anchor head is of a drill bit structure, one end of the anchor head is provided with an injection through hole penetrating through the whole anchor head along the length direction of the anchor head, one end of the anchor head, which is far away from the arrow head, stretches into the rod body and is detachably connected with the rod body, the outer wall, which is close to the arrow head, of the anchor head is of a stepped shaft structure, an anchor agent through hole communicated with the injection through hole is obliquely arranged on the stepped shaft, the opening direction of the anchor agent through hole and the axial included angle of the rod body are acute angles, and a plug is arranged at the opening of the injection through hole, which is far away from the rod body end, of the anchor head;
the pivot is provided with the tip and the stock body of rod of slip casting through-hole and keeps away from the anchor head end and can dismantle the connection, and slip casting through-hole and the inside intercommunication of body of rod.
Wherein, in the above-mentioned device rotate seal assembly including left axle sleeve, right axle sleeve, bearing, first sealing ring and second sealing ring, the pivot is the step shaft structure, and the middle part is the connecting portion of protruding font structure, the radial hole open end setting of slip casting through-hole is on the outer wall at connecting portion middle part, first sealing ring and second sealing ring cover are established on the step face in connecting portion middle part both sides, and the outer wall of first sealing ring and second sealing ring all laminates with the sleeve pipe inner wall, all the cover is equipped with the bearing on the step face in the outside of first sealing ring and second sealing ring, left axle sleeve and right axle sleeve set up in the outside of both sides bearing and can dismantle with the sleeve pipe and be connected.
The grouting through hole in the device is of a cross-shaped structure, the radial hole of the grouting through hole penetrates through the whole rotating shaft, and the rotating shaft can enable the axis of the injection hole to coincide with the radial hole axis of the grouting through hole.
Further, in the device, the first sealing ring is a copper sealing ring, and the second sealing ring is a rubber sealing ring; and the outer end of the injection hole is provided with a quick connector.
Wherein, in above-mentioned device the sleeve pipe both ends are provided with the connecting thread, and the connecting thread at both ends revolves to opposite, and left axle sleeve and right axle sleeve are inside all to be provided with the connecting thread of adaptation for left axle sleeve and right axle sleeve respectively with sleeve pipe threaded connection.
Wherein, in the device, the distance between the connecting part and the inner wall of the sleeve is 5-20 mm.
The injection through hole in the device is of a counter bore structure, and a mixer is arranged in the device far away from the anchor head.
The device further comprises a piston, the piston is arranged in the rod body, an annular groove is formed in the outer wall of the end, far away from the anchor head, of the piston, a rubber ring is arranged in the groove, the piston is of a hollow tubular structure, and a one-way valve is arranged in the pipe.
Further, in the device, the check valve comprises a spring, a ball body and a baffle, wherein the through hole in the piston is of a counter bore structure, an opening is formed in the middle of the baffle, the baffle is arranged at the end of the large-diameter through hole of the piston, one end of the spring is in contact connection with the radial side wall of the counter bore, the other end of the spring is in contact connection with the ball body, and the other side of the ball body penetrates into the opening of the baffle.
Wherein, in the device, the outer wall of the anchor head far away from the rod body is of a drill bit structure.
The beneficial effects of the invention are as follows: the device has simple structure and convenient use. When the device is in actual use, the anchoring agent is packaged into the inner cavity of the rod body, and meanwhile, high-pressure water is directly communicated with the injection hole, so that the anchoring agent is pushed by the high-pressure water to achieve the aim of anchoring. When the tray is directly contacted with surrounding rock, the other end of the rotating shaft of the rotary joint is directly connected with the output shaft of the jumbolter, rotary power is provided by the jumbolter, and the rotary power is transmitted to the rod body through the rotating shaft, so that the pre-tightening effect of the nut can be realized, and the supporting and fixing effects are realized. The high-pressure water axially flows into the rod body along the rotating shaft through the injection hole and the grouting through hole, then the anchoring agent package is pushed, the anchoring agent package is extruded to enable the anchoring agent to flow out of the anchoring agent through hole from the injection through hole, the anchoring agent is continuously filled into a gap between the outer wall of the rod body and surrounding rock, the high-pressure water is continuously introduced, when the grouting pressure reaches a certain pressure, the high-pressure water directly flows into the injection through hole of the anchor head, and the plug is opened to realize high-pressure injection. The structure arrangement ensures that the device completes drilling, anchoring and high-pressure grouting in one step, greatly reduces implementation procedures, shortens time and reduces labor intensity of constructors.
Drawings
FIG. 1 is a schematic diagram of the present invention in full section;
FIG. 2 is a schematic diagram of the anchor rod of the present invention in full section;
FIG. 3 is a schematic view of the anchor head of the present invention in full section;
FIG. 4 is a schematic diagram of the anchor rod of the present invention in full section;
fig. 5 is a schematic diagram of the piston in full section.
Marked in the figure as: 1 is a nut, 2 is a piston, 21 is a groove, 3 is a rod body, 31 is a pipe thread, 4 is a mixer, 5 is an anchor head, 51 is an injection through hole, 6 is an anchor agent bag, 7 is a tray, 8 is a plug, 9 is an anchor agent through hole, 10 is a rubber ring, 12 is a one-way valve, 121 is a baffle, 122 is a ball, 123 is a spring, 13 is a rotating shaft, 131 is a connecting part, 132 is an injection through hole, 14 is a right shaft sleeve, 15 is a second sealing ring, 16 is a sleeve, 161 is an injection hole, 17 is a quick connector, 18 is a second sealing ring, 19 is a bearing, and 20 is a left shaft sleeve.
Detailed Description
The invention is further described below with reference to the accompanying drawings.
As shown in fig. 1 to 5, the drilling-anchoring high-pressure grouting integrated anchoring device of the present invention comprises:
the rotary joint comprises a rotary shaft 13, a sleeve 16 and a rotary sealing assembly, wherein the rotary shaft 13 and the sleeve 16 are in rotary sealing connection through the rotary sealing assembly, a grouting through hole 132 is formed in the rotary shaft 13, the grouting through hole 132 comprises a radial hole and an axial hole which are communicated, one end of the radial hole far away from the axial hole extends out of the outer wall of the rotary shaft 13, the axial hole is of a blind hole structure, one end of the axial hole extends to the end face of the rotary shaft 13, an injection hole 161 is formed in the sleeve 16, and the injection hole 161 can be communicated with the radial hole of the grouting through hole 132;
the anchor rod comprises a rod body 3 and an anchor head 5, and the rod body 3 is of a hollow tubular structure; the anchor head 5 is of an arrow-shaped structure, the arrow part of the anchor head 5 is of a drill bit structure, one end of the anchor head 5 is provided with an injection through hole 51 penetrating through the whole anchor head 5 along the length direction of the anchor head, one end of the anchor head 5, which is far away from the arrow part, stretches into the rod body 3 and is detachably connected with the rod body 3, the outer wall, which is close to the arrow part, of the anchor head 5 is of a stepped shaft structure, an anchoring agent through hole 9 communicated with the injection through hole 51 is obliquely arranged on the stepped shaft, the opening direction of the anchoring agent through hole 9 and the axial included angle of the rod body 3 are acute angles, and a plug 8 is arranged at the opening of the injection through hole 51, which is far away from the end of the rod body 3, of the anchor head 5;
the end part of the rotating shaft 13 provided with the grouting through hole 132 is detachably connected with the end, far away from the anchor head 5, of the anchor rod body 3, and the grouting through hole 132 is communicated with the inside of the anchor rod body 3. As will be appreciated by those skilled in the art, the end of the rotary shaft 13 of the rotary joint, at which the grouting through hole 132 is arranged, is detachably connected with the end of the rod body 3 of the anchor rod, which is far away from the anchor head 5, so that the grouting through hole 132 is kept in communication with the interior of the rod body 3. Meanwhile, the section of the anchor head 5 is preferably in an arrow shape, one end of the anchor head 5, which is far away from the arrow part, stretches into the rod body 3 and is detachably connected with the rod body 3, the rod body 3 is in a tubular structure, the outer wall of the anchor head 5, which is close to the arrow part, is in a stepped shaft structure, the stepped shaft is obliquely provided with an anchoring agent through hole 9 communicated with the injection through hole 51, the opening direction of the anchoring agent through hole 9 and the axial included angle of the rod body 3 are acute angles, and after one end of the rod body 3 is connected with the anchor head 5, the rod body 3, the injection through hole 51 and the anchoring agent through hole 9 are internally communicated. In actual use, the anchoring agent bag 6 is firstly filled into the inner cavity of the rod body 3, and meanwhile, high-pressure water is directly communicated with the injection hole 161, and the anchoring agent bag 6 is pushed by the high-pressure water to realize the purpose of anchoring. Meanwhile, as the anchoring agent through hole 9 communicated with the injection through hole 51 is obliquely arranged on the stepped shaft, the opening direction of the anchoring agent through hole 9 and the axial included angle of the rod body 3 are acute angles, the anchoring agent can only flow out along the orifice direction along the anchoring agent through hole 9, and the rod body 3 is anchored. Meanwhile, as the anchor agent through hole 9 is arranged on the stepped shaft structure of the outer wall of the anchor head 5, which is close to the arrow head, and one end of the anchor head 5, which is far away from the arrow head, stretches into the rod body 3 and is detachably connected with the rod body 3, the normal use of the anchor agent through hole 9 is not affected. The device can be preferably close to the connecting end of the arrow head part and the rod body 3 and is in a tubular structure, the rod body 3 and the anchor head 5 are in threaded connection to realize detachable connection, the inner wall of one end of the rod body 3 is provided with a tubular thread 31, and the outer wall of the anchor head 5 close to the arrow head part is provided with an adaptive external thread 51. Meanwhile, the device seals the outlet of the anchor head 5 far away from the rod body 3 through the plug 8, and an anchoring agent through hole 9 is formed in the arrow part of the anchor head 5, so that in actual use, the injection hole 161 is connected with high-pressure water, the high-pressure water directly acts on the anchoring agent bag 6, the anchoring agent bag 6 is damaged, the anchoring agent components in the anchoring agent bag 6 are uniformly mixed, and the anchoring agent flows out of the anchoring agent through hole 9 to realize anchoring. And high-pressure water is continuously introduced, when the grouting pressure reaches a certain pressure, the high-pressure water directly flows into the injection through hole 51 of the anchor head 5, and the plug 8 is opened, so that the purpose of high-pressure grouting is realized. It may further be preferred that the arrow end of the anchor head 5 may preferably be of conical or frustoconical configuration. Meanwhile, in order to prevent the anchoring agent from flowing to the arrow end of the anchor head, the outer wall, close to the arrow end, of the anchor head 5 of the device is preferably of a stepped shaft structure, the stepped shaft is obliquely provided with an anchoring agent through hole 9 communicated with the injection through hole 51, and the opening direction of the anchoring agent through hole 9 and the axial included angle of the rod body 3 are acute angles, namely, the opening of the anchoring agent through hole 9 faces the outer side of surrounding rock, namely, faces the drilling side.
Preferably, in the above device, the rotary seal assembly includes a left shaft sleeve 20, a right shaft sleeve 14, a bearing 19, a first seal ring 18 and a second seal ring 15, the rotating shaft 13 is of a stepped shaft structure, the middle part is a connecting part 131 with a convex structure, the radial hole opening end of the grouting through hole 132 is arranged on the outer wall of the middle part of the connecting part 131, the first seal ring 18 and the second seal ring 15 are sleeved on the step surfaces of the two sides of the middle part of the connecting part 131, the outer walls of the first seal ring 18 and the second seal ring 15 are attached to the inner wall of the sleeve 16, the step surfaces of the outer sides of the first seal ring 18 and the second seal ring 15 are sleeved with the bearing 19, and the left shaft sleeve 20 and the right shaft sleeve 14 are arranged on the outer sides of the bearings 19 at two sides and can be detachably connected with the sleeve 16. As can be understood by those skilled in the art, the device preferably has a connecting portion 131 with a convex structure in the middle of the rotating shaft 13, and the entire rotating shaft 13 is a stepped shaft, so that the step surfaces on two sides of the middle of the connecting portion 131 of the rotating shaft 13 are symmetrically sleeved with a first sealing ring 18 and a second sealing ring 15, and the outer walls of the first sealing ring 18 and the second sealing ring 15 can be directly tightly attached to the inner wall of the sleeve 16 to realize axial sealing; in order to reduce abrasion, the device is preferably sleeved with bearings 19 on stepped shafts outside the first sealing ring 18 and the second sealing ring 15, the first sealing ring 18 and the second sealing ring 15 are arranged at two ends of the sleeve 16, and meanwhile, the axial acting force is applied to arrange the middle part of the rotating shaft 13 in the sleeve 16 by adjusting the distance between the first sealing ring 18 and the second sealing ring 15, so that sealing rotation of the rotating shaft 13 and the sleeve 16 is realized. Meanwhile, the rotating shaft 13 of the device is rotationally connected with the sleeve 16, and as the sleeve 16 is provided with the injection hole 161, the grouting through hole 132 is formed in the rotating shaft 13, the device aims to realize drilling and anchoring integration, and the main function of high-pressure water is to push anchoring agents to realize anchoring, so that a certain gap exists between the outer wall of the middle part of the connecting part 131 of the rotating shaft 13 and the inner wall of the sleeve 16, and the rotating shaft 13 can conveniently follow the rotation of the jumbolter. When the device is in actual use, high-pressure water can be connected with the injection hole 161, meanwhile, the end of the rotating shaft 13, which is provided with the grouting through hole 132, is connected with the anchor rod body, the other end of the rotating shaft 13 is connected with the anchor rod drilling machine, the rotating power of the anchor rod body 3 is provided through the anchor rod drilling machine, the high-pressure water discharged from the grouting through hole 132 directly flows into the hollow anchor rod body 3, and the anchoring agent is pushed to be mixed to provide power, so that the drilling and anchoring integration is realized.
Preferably, in the above device, the grouting through hole 132 has a cross structure, and the radial hole of the grouting through hole 132 penetrates through the entire rotating shaft 13, and rotating the rotating shaft 13 can make the axis of the injection hole 161 coincide with the radial hole axis of the grouting through hole 132. It will be appreciated by those skilled in the art that in order to ensure high pressure water inflow the present device preferably has a cross-shaped configuration for the grouting through-holes 132 such that the radial holes extend entirely through the shaft 13, i.e. through the connection 131, such that high pressure water can be introduced at both sides of the grouting through-holes 132 to maintain the power required to push the anchoring agent.
Preferably, in the above device, the first sealing ring 18 is a copper sealing ring, and the second sealing ring 15 is a rubber sealing ring; and the outer end of the injection hole 161 is provided with a quick connector 17. It will be appreciated by those skilled in the art that the present device is preferably only a copper seal for the first seal ring 18 and a rubber seal for the second seal ring 15, so that the overall device is better sealed with minimal wear of the seal.
Preferably, in the above device, connecting threads are provided at two ends of the sleeve 16, and the connecting threads at two ends are opposite in rotation direction, and the inner parts of the left shaft sleeve 20 and the right shaft sleeve 14 are provided with adaptive connecting threads, so that the left shaft sleeve 20 and the right shaft sleeve 14 are respectively in threaded connection with the sleeve 16. It will be appreciated by those skilled in the art that in order to make the whole device more stable in structure, it is preferable to provide opposite connection threads at both ends of the sleeve 16, and simultaneously provide connection threads respectively adapted to both ends of the left and right sleeves 20, 14 at the connection ends of the left and right sleeves 20, 14, so that the ends of the sleeve 16 can be respectively screwed with the left and right sleeves 20, 14; meanwhile, the reverse threads can effectively prevent the reaction force of high-pressure water from directly acting on the sleeve 16 when the device is in actual use, so that the sleeve 16 rotates to cause the loosening of one end of the left shaft sleeve 20 or the right shaft sleeve 14. It is further preferable that the cross-sectional structures of the left and right bushings 20 and 14 are U-shaped, and in order to facilitate the penetration of the rotation shaft 13, it is further preferable that a through hole through which the rotation shaft 13 penetrates is provided in the middle of the bottom end.
Preferably, in the above device, the distance between the connecting portion 131 and the inner wall of the sleeve 16 is 5 to 20mm. As can be appreciated by those skilled in the art, in order to facilitate the high-pressure water to smoothly flow into the rotating shaft 13 from the injection hole along the gap between the connecting portion 131 and the sleeve 16, the pressure holding condition is avoided. The distance between the connecting portion 131 and the inner wall of the sleeve 16, that is, the distance between the maximum diameter of the rotating shaft 13 and the inner wall of the sleeve 16 is preferably 5 to 20mm.
Preferably, the injection through hole 51 is a counter bore structure, and the mixer 4 is disposed away from the inside of the anchor head 5. It will be appreciated by those skilled in the art that the injection through hole of the anchor head 5 is preferably of a counter bore structure, so that the mixer 4 is placed in the large end caliber to prevent the mixer 4 from moving axially and facilitate uniform mixing of the anchoring agent.
Preferably, the device further comprises a piston 2, the piston 2 is arranged in the rod body 3, an annular groove 21 is formed in the outer wall of the end, far away from the anchor head 5, of the piston 2, a rubber ring 10 is arranged in the groove 21, the piston 2 is of a hollow tubular structure, and a one-way valve 12 is arranged in the pipe. It can be understood by those skilled in the art that in order to avoid the direct action of high-pressure water on the anchoring agent packet 6, the anchoring agent packet 6 is damaged in advance to affect the use, the device preferably comprises a piston 2 arranged in the rod body 3, and the piston 2 acts on the end part of the anchoring agent packet 6, so that the anchoring agent packet 6 is uniformly stressed and is prevented from being damaged in advance. Meanwhile, when in actual use, high-pressure water directly pushes the piston 2 to move, the anchoring agent bag 6 is extruded to push the anchoring agent to the mixer 4 for mixing, and in order to prevent the high-pressure water from directly contacting with the anchoring agent bag 6 at low pressure, the outer wall of the end, far away from the anchor head 5, of the piston 2 is preferably provided with an annular groove 21, a rubber ring 10 is arranged in the groove 21, and the sealing purpose is realized through the rubber ring 10. The structure is arranged so that in actual use, the rod body 3 is far away from the end of the anchor head 5 and is directly connected with high-pressure water, the high-pressure water directly acts on the piston 2, and the anchoring agent components in the anchoring agent bag 6 are pressed into the mixer 4 by pushing the piston 2 to realize resin anchoring agent mixing, and the resin anchoring agent flows out from the anchoring agent through hole 9 to realize anchoring. And high-pressure water is continuously introduced, when the grouting pressure reaches a certain pressure, the one-way valve 12 is opened, the high-pressure water directly flows into the injection through hole 51 of the anchor head 5, and the plug 8 is opened, so that the purpose of high-pressure grouting is realized.
Preferably, in the above device, the check valve 12 includes a spring 123, a ball 122, and a baffle 121, the through hole inside the piston 2 is a counter bore structure, an opening is provided in the middle of the baffle 121, and the baffle 121 is disposed at the end of the large-diameter through hole of the piston 2, one end of the spring 123 is in contact with the radial sidewall of the counter bore, the other end is in contact with the ball 122, and the other side of the ball 122 penetrates into the opening of the baffle 121. It will be appreciated by those skilled in the art that the specific structure of the check valve 12 inside the piston 2 is further preferred, by arranging the through hole of the piston 2 into a counterbore shape, one end of the spring 123 is contacted with the radial side wall of the counterbore, so that the spring 123 cannot move like a small opening end, the fixed purpose is achieved, the other end of the spring 123 is connected with the ball 122, which can be in contact connection or fixed connection, the ball 122 and the spring 123 are limited inside the piston 2 by the baffle 121 at the large opening end of the piston 2, an opening is arranged in the middle of the baffle 121, and the maximum diameter of the opening is smaller than the diameter of the ball 122 to achieve the purpose of limiting the ball 122.
Preferably, in the above device, the arrow part of the anchor head 5 far away from the rod body 3 is a drill bit structure. It can be understood by those skilled in the art that the device further preferably uses the arrow part of the anchor head 5 far away from the rod body 3 as a drill bit structure, and the purpose of drilling the device can be realized by applying a rotating acting force to the rod body 3 due to the fact that the anchor head 5 is directly connected with the rod body 3, and the structure can shorten the drilling step to realize anchor drilling integration.
Claims (7)
1. Drilling and anchoring high-pressure grouting integrated anchoring device is characterized by comprising:
the rotary joint comprises a rotary shaft (13), a sleeve (16) and a rotary sealing assembly, wherein the rotary shaft (13) and the sleeve (16) are in rotary sealing connection through the rotary sealing assembly, a grouting through hole (132) is formed in the rotary shaft (13), the grouting through hole (132) comprises a radial hole and an axial hole which are communicated, one end of the radial hole, which is far away from the axial hole, extends out of the outer wall of the rotary shaft (13), the axial hole is of a blind hole structure, one end of the radial hole extends to the end face of the rotary shaft (13), an injection hole (161) is formed in the sleeve (16), and the injection hole (161) can be communicated with the radial hole of the grouting through hole (132);
the anchor rod comprises a rod body (3) and an anchor head (5), wherein the rod body (3) is of a hollow tubular structure; the section of the anchor head (5) is of an arrow-shaped structure, one end of the anchor head (5) is provided with an injection through hole (51) penetrating through the whole anchor head (5) along the length direction of the anchor head, one end of the anchor head (5) far away from the arrow head stretches into the rod body (3) and is detachably connected with the rod body (3), the outer wall of the anchor head (5) close to the arrow head is of a stepped shaft structure, the stepped shaft is obliquely provided with an anchoring agent through hole (9) communicated with the injection through hole (51), the opening direction of the anchoring agent through hole (9) and the axial included angle of the rod body (3) are acute angles, and a plug (8) is arranged at the opening of the injection through hole (51) far away from the end of the rod body (3) of the anchor head (5);
the end part of the rotating shaft (13) provided with the grouting through hole (132) is detachably connected with the end of the anchor rod body (3) far away from the anchor head (5), and the grouting through hole (132) is communicated with the inside of the rod body (3);
the rotary sealing assembly comprises a left shaft sleeve (20), a right shaft sleeve (14), a bearing (19), a first sealing ring (18) and a second sealing ring (15), wherein the rotating shaft (13) is of a stepped shaft structure, the middle part of the rotating shaft is a connecting part (131) of a convex structure, the opening end of a radial hole of a grouting through hole (132) is arranged on the outer wall of the middle part of the connecting part (131), the first sealing ring (18) and the second sealing ring (15) are sleeved on the step surfaces on the two sides of the middle part of the connecting part (131), the outer walls of the first sealing ring (18) and the second sealing ring (15) are attached to the inner wall of the sleeve (16), the bearing (19) is sleeved on the step surfaces on the outer sides of the first sealing ring (18) and the second sealing ring (15), and the left shaft sleeve (20) and the right shaft sleeve (14) are arranged on the outer sides of the bearings (19) on the two sides and can be detachably connected with the sleeve (16);
the grouting through hole (132) is of a cross structure, a radial hole of the grouting through hole (132) penetrates through the whole rotating shaft (13), and the rotating shaft (13) is rotated so that the axis of the injection hole (161) is overlapped with the radial hole axis of the grouting through hole (132); the distance between the connecting part (131) and the inner wall of the sleeve (16) is 5-20 mm.
2. The drill-anchor high-pressure grouting integrated anchoring device according to claim 1, wherein: the first sealing ring (18) is a copper sealing ring, and the second sealing ring (15) is a rubber sealing ring; and the outer end of the injection hole (161) is provided with a quick connector (17).
3. The drill-anchor high-pressure grouting integrated anchoring device according to claim 1, wherein: connecting threads are arranged at two ends of the sleeve (16), the connecting threads at two ends are opposite in rotation direction, and adaptive connecting threads are arranged inside the left shaft sleeve (20) and the right shaft sleeve (14), so that the left shaft sleeve (20) and the right shaft sleeve (14) are respectively in threaded connection with the sleeve (16).
4. The drill-anchor high-pressure grouting integrated anchoring device according to claim 1, wherein: the injection through hole (51) is of a counter bore structure, and a mixer (4) is arranged in the part far away from the anchor head (5).
5. The drill-anchor high-pressure grouting integrated anchoring device according to claim 1, wherein: still include piston (2), piston (2) set up in body of rod (3), and be provided with annular groove (21) on piston (2) keep away from anchor head (5) end outer wall, be provided with rubber circle (10) in groove (21), piston (2) are hollow tubular structure and intraductal check valve (12) that are provided with.
6. The drilling-anchoring high-pressure grouting integrated anchoring device according to claim 5, wherein: the one-way valve (12) comprises a spring (123), a ball body (122) and a baffle (121), wherein an inner through hole of the piston (2) is of a counter bore structure, an opening is formed in the middle of the baffle (121), the baffle (121) is arranged at the large-diameter through hole end of the piston (2), one end of the spring (123) is in contact connection with the radial side wall of the counter bore, the other end of the spring is in contact connection with the ball body (122), and the other side of the ball body (122) penetrates into the opening of the baffle (121).
7. The drill-anchor high-pressure grouting integrated anchoring device according to claim 1, wherein: the outer wall of the anchor head (5) far away from the rod body (3) is of a drill bit structure.
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Families Citing this family (5)
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| CN110374651B (en) * | 2019-07-18 | 2020-12-01 | 北京交通大学 | Self-drilling type double-material full-length anchoring device and anchoring construction method |
| CN110259386B (en) * | 2019-07-18 | 2024-03-15 | 骆波清 | High-pressure jet grouting drill bit |
| CN111577357A (en) * | 2020-04-07 | 2020-08-25 | 山西海洁机电科技有限公司 | Drilling and anchoring integrated hollow anchor rod and anchoring method |
| CN113090306B (en) * | 2021-04-30 | 2023-05-12 | 中煤科工开采研究院有限公司 | Multifunctional anchor bolt support construction equipment |
| CN114934795B (en) * | 2022-06-17 | 2023-12-12 | 中国矿业大学 | Similar model test anchor rod capable of self-injecting anchoring agent and applying pretightening force |
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