CN216043809U - Quick grouting joint and grouting assembly for tunnel locking anchor pipe - Google Patents
Quick grouting joint and grouting assembly for tunnel locking anchor pipe Download PDFInfo
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- CN216043809U CN216043809U CN202121722032.4U CN202121722032U CN216043809U CN 216043809 U CN216043809 U CN 216043809U CN 202121722032 U CN202121722032 U CN 202121722032U CN 216043809 U CN216043809 U CN 216043809U
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Abstract
The utility model provides a quick grouting joint of a tunnel locking anchor pipe and a grouting assembly, wherein the grouting joint comprises a joint shell, an annular connecting channel, a pulp flowing channel and a locking piece, the joint shell comprises a shell outer side plate and a connecting part, the pulp flowing channel is arranged in the shell outer side plate, the annular connecting channel is formed between the pulp flowing channel and the shell outer side plate, the annular connecting channel is provided with a first opening, the pulp flowing channel is provided with a second opening, the first opening and the second opening are arranged at the same side of the joint shell, the connecting part is internally provided with a pulp inlet channel, and the pulp inlet channel is communicated with the pulp flowing channel; retaining member drive casing lateral plate is bending deformation inwards, and in the slip casting subassembly, slip casting joint, slip casting gate valve on slip casting machine and two lock foot anchor pipes are connected to a slip casting connecting pipe that has many links, structure more than adopting, get rid of lock foot anchor pipe tail end welded connection pole's step, and a slip casting machine carries out the slip casting to two lock foot anchor pipes simultaneously, effectively improves work efficiency.
Description
Technical Field
The utility model relates to the technical field of tunnel construction, in particular to a quick grouting connector and a grouting assembly for a tunnel locking anchor pipe.
Background
In the tunnel engineering construction, the foot locking construction technology belongs to the conventional technical measures in the industry, and is mainly widely applied to the tunnel construction of soil and broken surrounding rocks. The locking feet mainly refer to a process of fixing the feet of the tunnel before the lower step is excavated after the upper step is excavated and the steel arch frame is erected when the tunnel is excavated by a step method. Referring to fig. 1, the main process of locking the feet is to drive the anchor pipe 01 of the locking feet perpendicular to the wall 02 of the surrounding rock, and to slip the anchor pipe 01, to limit the displacement of the steel body of the steel arch frame 03 as much as possible, so that the steel body bears the pressure caused by the deformation of the surrounding rock 02 as early as possible, and the stability of the primary support of the tunnel is ensured.
After the steel arch 03 of the primary support is installed, if the locking construction is not performed, the deformation of the surrounding rock 02 may cause the steel arch 03 to generate displacement convergence, so that the exertion of the internal force of the support structure is not facilitated. After the locking anchor pipe 01 is installed, the self-stabilizing time of the steel arch frame 03 can be prolonged, and the sinking amount caused by suspension of primary support due to excavation of a lower step or an inverted arch is reduced.
At present, construction units in the industry can guarantee timely construction according to requirements for construction of the lock leg anchor pipe, but a lagging phenomenon exists in grouting of the lock leg anchor pipe, mainly because the lock leg anchor pipe is arranged before grouting at present, see fig. 2, a section of connecting joint 04 needs to be welded at the tail of the lock leg anchor pipe 01 in advance, threads are arranged on the connecting joint 04, the threads on the connecting joint 04 are used for being connected with an internal thread joint of a grouting gate valve 05, connection of the lock leg anchor pipe 01 and the grouting gate valve 05 is completed, and grouting of the lock leg anchor pipe 01 is conducted. However, the construction time of the whole pin-locking anchor pipe process is too long due to the independent welding of the connecting joint 04, and meanwhile, the process is used for welding and grouting the pin-locking anchor pipes 01 one by one, so that the time of the overall primary support formula process is directly prolonged, and the grouting delay inevitably has great influence on the overall stress of the primary support.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a rapid grouting connector for a tunnel lock pin anchor pipe, which can be used for rapidly grouting the lock pin anchor pipe.
The utility model aims to provide a tunnel locking anchor pipe grouting assembly for quickly grouting a locking anchor pipe.
In order to achieve the first purpose, the rapid grouting joint for the tunnel locking anchor pipe comprises a joint shell, an annular connecting channel, a pulp flow channel and a locking piece, wherein the joint shell comprises a shell outer side plate and a connecting part, the shell outer side plate is annular, the pulp flow channel is arranged in the shell outer side plate and extends along the axial direction of the shell outer side plate, the annular connecting channel is formed between the pulp flow channel and the shell outer side plate, and the annular connecting channel is sleeved outside the pulp flow channel along the circumferential direction of the pulp flow channel; the annular connecting channel is provided with a first opening, the first opening extends along the axial direction of the annular connecting channel, the pulp flowing channel is provided with a second opening, the second opening extends along the axial direction of the pulp flowing channel, the first opening and the second opening are arranged on the first side of the joint shell, the connecting part is arranged on the second side of the joint shell, the first side and the second side are different sides of the joint shell, the pulp inlet channel is arranged in the connecting part, and the pulp inlet channel is communicated with the pulp flowing channel; the locking piece is arranged on the outer side wall of the joint housing, and the locking piece drives the outer side plate of the housing to bend and deform towards the annular connecting channel.
According to the scheme, the grouting connector is used for being installed at the tail end of the foot locking anchor pipe, when the grouting connector is installed at the tail end of the foot locking anchor pipe, the tail end of the foot locking anchor pipe is located in the annular connecting channel, the shell outer side plate is driven to bend and deform towards the annular connecting channel through the locking piece, the foot locking anchor pipe in the annular connecting channel is clamped tightly, the pulp flowing channel is communicated with the foot locking anchor pipe due to the fact that the pulp flowing channel is arranged in the annular connecting channel, the connecting portion of the grouting connector is connected with the grouting machine, grouting concrete enters the pulp flowing channel from the pulp entering channel and flows into the foot locking anchor pipe, and after grouting of the foot locking anchor pipe is completed, the grouting connector is detached from the tail end of the foot locking anchor pipe through the removal of the locking piece; the grouting joint is used for grouting the lock leg anchor pipe, the step of welding the connecting rod at the tail end of the lock leg anchor pipe is removed, the steps of installing and disassembling the grouting joint are simple and rapid, the working efficiency is effectively improved, the grouting joint can be recycled, and the cost is effectively saved.
The further scheme is that the locking piece comprises a hoop clamp and a bolt, the hoop clamp comprises a hoop and two convex blocks, a notch is arranged between the hoop and the first end and the second end of the hoop along the circumferential direction of the hoop, the two convex blocks are convex based on the outer side wall of the hoop, the notch is arranged between the two convex blocks, screw holes are respectively arranged in the two convex blocks, and the screw holes of the two convex blocks are all connected with the bolt.
Therefore, the hoop is sleeved outside the outer side plate of the shell, the bolt simultaneously penetrates through the screw holes in the two convex blocks, and the outer side plate of the shell gradually begins to deform along with the screwing degree of the bolt, so that the foot-locking anchor pipe is fixed in the annular connecting channel, and the connection between the grouting joint and the foot-locking anchor pipe is completed; after grouting is finished, the hoop is separated from the outer side plate of the shell by loosening the bolt, so that the grouting joint at the tail end of the foot-locking anchor pipe is easily pulled out, and the grouting joint is quickly mounted and dismounted through the hoop and bolt connecting structure.
The further scheme is that at least one deformation channel is arranged in the shell outer side plate, the deformation channel extends along the axial direction of the shell outer side plate, and the width of the deformation channel is smaller than the thickness of the shell outer side plate.
It can be seen that the arrangement of the deformation channel enables the shell outer side plate to have a larger deformation range, and the locking pin anchor pipe in the annular connecting channel is locked more easily, so that the connection between the locking pin anchor pipe and the grouting connector is more stable.
The further proposal is that the grouting joint comprises a piston sleeve which is arranged in the pulp flowing channel, and the radial width of the piston sleeve is less than that of the pulp flowing channel; the piston sleeve is provided with a first movable chamber, a pulp inlet and a plurality of pulp outlets, the plurality of pulp outlets are arranged along the circumferential direction of the piston sleeve, the first movable chamber is communicated with the plurality of pulp outlets, the pulp inlet is communicated with the first movable chamber, the pulp inlet is communicated with the plurality of pulp outlets, and the pulp inlet is arranged in the pulp inlet channel; a first piston is arranged in the first movable chamber, the first piston reciprocates in the first movable chamber along the axial direction of the pulp flowing channel, and the first piston can cover a plurality of pulp outlets.
It can be seen that, for the intermittent type formula slip casting mode of cooperation slip casting machine self, set up the piston sleeve pipe in the thick liquid passageway that flows, the intraductal first piston of piston sleeve is reciprocating motion, and during this period, a plurality of grout outlets are simultaneously covered to first piston intermittent type formula, make its intermittent type formula play thick liquid, realize slip casting joint intermittent type formula pumping mode, realize the invariant of slip casting in-process pressure, make the slip casting process more stable.
The piston sleeve is internally provided with a second movable cavity, a communicating channel is arranged between the first movable cavity and the second movable cavity, the first piston channel, the communicating channel and the second movable cavity are sequentially arranged along the axial direction of the piston sleeve, the first movable cavity is close to the slurry inlet channel, the radial width of the communicating channel is respectively smaller than the width of the first movable cavity and the width of the second movable cavity, a second piston is arranged in the second movable cavity, a piston rod is connected between the first piston and the second piston, the piston rod is arranged in the communicating channel, and the second piston moves in the second movable cavity.
It can be seen that the second piston is arranged in the piston sleeve, the first piston and the second piston are respectively connected with the piston rod, the movable range of the first piston is limited through the arrangement structure of the second movable cavity and the second piston, and the first piston can accurately cover the slurry outlet and can smoothly discharge slurry after the first piston is far away from the slurry outlet to move.
The piston sleeve is internally provided with a sealing ring, the sealing ring is arranged between the slurry inlet and the slurry outlet, a through hole is formed in the sealing ring, a sealing block is arranged on the side wall, facing the slurry inlet, of the first piston, the sealing block penetrates through the through hole, and the sealing block is in clearance fit with the through hole.
Therefore, the sealing ring is additionally arranged in the piston sleeve, and the sealing block on the first piston is in clearance fit with the through hole on the sealing ring, so that the sealing property of the concrete flow in the piston sleeve is ensured, and the constant pressure in the grouting process is better ensured.
In order to achieve the second object, the rapid grouting assembly for the tunnel lock foot anchor pipe provided by the utility model comprises a grouting connecting pipe, a grouting joint and at least two grouting gate valves, wherein the grouting joint is the grouting joint, one grouting joint is correspondingly connected with one grouting gate valve, the grouting connecting pipe is provided with a first connecting end, a second connecting end and a third connecting end, the first connecting end and the second connecting end are respectively connected with one grouting gate valve, and the third connecting end is used for connecting a grouting machine.
It is obvious that be connected with a slip casting joint on two lock foot anchor pipes respectively, a slip casting joint corresponds and connects a slip casting gate valve, and two slip casting gate valves are connected with the different link on a slip casting connecting pipe respectively, and the slip casting connecting pipe is connected with a slip casting machine to realize that a slip casting machine carries out the slip casting to two lock foot anchor pipes simultaneously, further improve work efficiency.
The further scheme is that a binding section is arranged on the grouting connecting pipe, a plurality of avoiding grooves are formed in the binding section, and the avoiding grooves are arranged along the length direction of the binding section.
It is obvious, when connecting other slip casting hoses on the slip casting connecting pipe, a plurality of setting of dodging the recess make the surface unevenness of slip casting connecting pipe, when carrying out the connection of slip casting connecting pipe and slip casting hose through iron wire or other stripped bodies, iron wire or other stripped bodies ligature in dodging the recess for more firm between slip casting connecting pipe and the slip casting hose.
Drawings
Fig. 1 is a schematic view showing the installation of a prior art lockpin anchor tube.
Fig. 2 is a schematic view of the connection between the locking leg anchor pipe and the grouting gate valve during grouting in the background art.
Fig. 3 is a cross-sectional view of an embodiment of the quick grouting joint for the anchor pipe of the tunnel locking pin of the utility model.
Fig. 4 is a schematic view showing the connection between the connector housing and the locking member in the embodiment of the quick grouting connector for the tunnel locking anchor pipe of the utility model.
Fig. 5 is a sectional view taken along line a-a of fig. 4.
Fig. 6 is a cross-sectional view of the piston sleeve in an embodiment of the tunnel lock pin anchor pipe quick grouting joint of the utility model.
Fig. 7 is a sectional view taken along the line of fig. 6B-B.
Fig. 8 is a structural view of an embodiment of the rapid grouting assembly for the tunnel locking anchor pipe of the utility model.
FIG. 9 is a schematic view of the connection between the embodiment of the quick grouting joint for the tunnel locking anchor pipe and the locking anchor pipe.
The utility model is further explained with reference to the drawings and the embodiments.
Detailed Description
The rapid grouting joint for the tunnel lock leg anchor pipe is applied to the rapid grouting process for the tunnel lock leg anchor pipe, the grouting joint is connected to the tail end of the lock leg anchor pipe after the steel arch centering of primary support is welded with the lock leg anchor pipe, a connecting rod does not need to be welded at the tail end of the lock leg anchor pipe, and the working efficiency is effectively improved; the grouting joints are correspondingly connected with the grouting gate valves, the grouting gate valves are connected with the grouting machines through the grouting connecting pipes with three connecting ends, two locking anchor pipes are correspondingly connected with the two grouting joints, the two grouting gate valves and one grouting machine, and the two locking anchor pipes are simultaneously grouted by the grouting machine, so that the working efficiency is further improved.
Referring to fig. 3, the fast grouting connector 1 for the tunnel locking anchor pipe comprises a connector shell 2, an annular connecting channel 3, a pulp flow channel 4, a piston sleeve 5 and a locking member 6, wherein the connector shell 2 is used for connecting a grouting gate valve, and when the tail end of the locking anchor pipe is connected with the grouting connector 1, the tail end of the locking anchor pipe is positioned in the annular connecting channel 3. The foot-locking anchor pipe is communicated with the stock flow channel 4, and the grouting concrete flows into the foot-locking anchor pipe from the stock flow channel 4, so that the grouting of the foot-locking anchor pipe is realized. A piston sleeve 5 is arranged in the flow channel 4 for adapting to the intermittent pumping mode of the grouting machine itself. And the locking piece 6 is used for locking and connecting the tail end of the locking anchor pipe in the grouting joint 1 with the grouting joint 1.
Referring to fig. 4, the joint housing 2 includes a housing outer panel 21 and a connecting portion 22, and the connecting portion 22 is provided on a side wall of the housing outer panel 21. In this embodiment, the connecting portion 22 is a connecting block formed by a protrusion on the outer wall of the casing outer panel 21, a screw 221 is provided on the connecting portion 22, and the grouting gate valve is connected by the screw 221. A grout inlet passage 222 is arranged in the connecting part 22, and the grouting concrete enters the grouting joint 1 from the grout inlet passage 222.
The casing outer side plate 21 is annular, and the head flow channel 4 sets up in the casing outer side plate 21, and the axial extension of casing outer side plate 21 is followed to head flow channel 4, and head flow channel 4 communicates with the lock foot anchor pipe, and income thick liquid passageway 222 communicates with head flow channel 4. The central axis of the pulp flow passage 4 is parallel to or overlaps the central axis of the casing outer panel 21 and the central axis of the pulp inlet passage 222, respectively, and in this embodiment, the central axis of the pulp flow passage 4 overlaps the central axis of the casing outer panel 21 and the central axis of the pulp inlet passage 222, respectively, and the central axis of the casing outer panel 21 overlaps the central axis of the pulp inlet passage 222. The width of the flow channel 4 in the radial direction of the outer shell side plate 21 is greater than the width of the slurry inlet channel 222, and when the piston sleeve 5 is installed in the flow channel 4, the flow channel 4 is then provided with sufficient space to allow the concrete slurry to flow therethrough.
An annular connecting channel 3 is formed between the stock discharge channel 4 and the housing outer side plate 21, and the annular connecting channel 3 is sleeved outside the stock discharge channel 4 along the circumferential direction of the stock discharge channel 4. The annular connecting channel 3 is provided with a first opening 31, the first opening 31 extends along the axial direction of the annular connecting channel 3, the pulp flow channel 4 is provided with a second opening 41, the second opening 41 extends along the axial direction of the pulp flow channel 4, the first opening 31 and the second opening 41 are arranged on a first side of the joint housing 2, the connecting part 22 is arranged on a second side of the joint housing 2, and the first side of the joint housing 2 and the second side of the joint housing 2 are different sides of the joint housing 2. In this embodiment, the first side of the joint housing 2 and the second side of the joint housing 2 are disposed opposite to each other, when the grouting joint 1 is connected to the tail end of the leg-locking anchor pipe, the leg-locking anchor pipe passes through the first opening 31 and enters the annular connecting channel 3, and the second opening 41 is located in the leg-locking anchor pipe; and the connecting part 22 is connected with the grouting gate valve, and because the first side of the joint shell 2 is arranged opposite to the second side of the joint shell 2, concrete can flow along the axial direction of the grout channel 4 and enter the foot-locking anchor pipe through the second opening 41, so that the grouting process of the foot-locking anchor pipe is completed.
A sealing ring 32 is arranged on the inner side wall of the annular connecting channel 3, the sealing ring 32 is opposite to the first opening 31, and the sealing ring 32 is in interference abutment with the inner side wall of the annular connecting channel 3 extending along the axial direction of the annular connecting channel 3; the sealing ring 32 is arranged to ensure the sealing performance in the annular connecting channel 3 during grouting.
The locking member 6 is provided on the outer side wall of the joint housing 2, and the locking member 6 drives the housing outer side plate 21 to be bent and deformed toward the annular connecting passage 3. The locking member 6 can be of various configurations, such as a spring clip for clamping the outer shell 21, or a snap-fit connection between two hingedly connected clamping blocks for clamping the outer shell 21, to force the outer shell 21 to deform to clamp the rear end of the shank anchor tube in the annular channel 3.
In this embodiment, referring to fig. 5, the locking member 6 includes a band clamp 61, a bolt 62 and a nut 63, the band clamp 61 includes a band 611 and two protrusions 612, a gap 613 is disposed between a first end and a second end of the band 61 along a circumferential direction of the band 61, the two protrusions 612 protrude based on an outer sidewall of the band 611, the gap 613 is disposed between the two protrusions 612, a screw hole 614 is disposed in each of the two protrusions 612, and the screw holes 614 of the two protrusions 612 are connected to the bolt 62. The hoop 61 is sleeved outside the shell outer side plate 21, the bolt 62 penetrates through screw holes 614 in two protruding blocks 612 and then is connected with a nut 63, the shell outer side plate 21 gradually begins to deform along with the screwing degree of the bolt 62, so that the foot-locking anchor pipe is fixed in the annular connecting channel 3, and the connection between the grouting joint 1 and the foot-locking anchor pipe is completed; after grouting is finished, the hoop clamp 61 is separated from the shell outer side plate 21 by loosening the bolt, so that the grouting joint 1 at the tail end of the lock leg anchor pipe is easily pulled out, and the grouting joint 1 is quickly mounted and dismounted through the connection structure of the hoop 611 and the bolt 62. The locking part 6 of this kind of structure is used to lock foot anchor pipe and slip casting and connects being connected between 1, and 6 convenient materials of locking part control connection's elasticity degree better, and the installation is convenient with the dismantlement, effectively improves work efficiency.
At least one deformation passage 211 is provided in the case outer panel 21, and in the present embodiment, the number of the deformation passages 211 is two, and the two deformation passages 211 are arranged in line in the radial direction of the case outer panel 21. The deformation passage 211 extends in the axial direction of the case outer panel 21, and the width of the deformation passage 211 is smaller than the thickness of the case outer panel 21. The deformation channel 11 enables the shell outer side plate 21 to have a larger deformation range, and the foot-locking anchor pipe in the annular connecting channel 3 is locked more easily, so that the connection between the foot-locking anchor pipe and the grouting joint 1 is more stable.
The piston sleeve 5 is arranged in the pulp flow channel 4, the radial width of the piston sleeve 5 is smaller than that of the pulp flow channel 4, in the embodiment, a screw thread 223 is arranged in the pulp inlet channel 222, a screw thread 51 is arranged on the outer side wall of the piston sleeve 5, when the piston sleeve 5 is arranged in the pulp flow channel 4, one end of the piston sleeve 5 is inserted into the pulp inlet channel 222, and the screw thread 223 in the pulp inlet channel 222 is matched and connected with the screw thread 51 of the piston sleeve 5. Referring to fig. 6 and 7, the piston sleeve 5 is provided with a slurry inlet 52, a first movable chamber 53, a plurality of slurry outlets 54, a second movable chamber 55, a first piston 56, a piston rod 57 and a second piston 58. The slurry inlet 52, the first movable chamber 53, and the second movable chamber 55 are arranged in this order in the axial direction of the piston sleeve 5, and the slurry inlet 52 is provided near the connecting portion 22. The first movable chamber 53 and the second movable chamber 55 are provided with a communication passage 59 in front, and the communication passage 59 extends in the axial direction of the piston sleeve 5. The width of the first movable chamber 53 is the same as the width of the second movable chamber 55 in the radial direction of the piston tube 5, and the width of the first movable chamber 53 is larger than the width of the communication passage 59.
The slurry inlet 52 communicates with the first movable chamber 53. The plurality of slurry outlets 54 are arranged along the circumferential direction of the piston sleeve 5, the first movable chamber 53 is communicated with the plurality of slurry outlets 54, and the slurry inlet 52 is communicated with the plurality of slurry outlets 54; the slurry outlet 54 is correspondingly arranged outside the first movable chamber 53. In the present embodiment, four slurry outlets 54 are arranged at equal intervals in the circumferential direction of the piston sleeve 5. A sealing ring 531 is arranged in the first movable chamber 53, the sealing ring 531 is arranged between the slurry inlet 52 and the slurry outlet 54, and a through hole 5311 is arranged on the sealing ring 531.
In order to match with the intermittent grouting mode of the grouting machine, the first piston 56 reciprocates in the first movable chamber 53 along the axial direction of the piston sleeve 5, and during the period, the first piston 56 intermittently and simultaneously covers the plurality of grout outlets 54, so that intermittent grout is discharged, an intermittent pumping mode of the grouting joint 1 is realized, the constant pressure in the grouting process is realized, and the grouting process is more stable. In the present embodiment, a piston stop position 532 is provided in the first movable chamber 53, the piston stop position 532 is provided between the communication passage 59 and the slurry outlet 54, and the slurry outlet 54 is provided between the piston stop position 532 and the slurry inlet 52; in the normal slurry discharging process of the slurry channel 4, the first piston 56 stays in the piston stay position 532, so that the first piston 56 cannot cover the slurry outlet; when the discharge of the pulp from the pulp channel 4 is stopped, the first piston 56 moves toward the pulp outlet 54 and covers the pulp outlet 54, so that it cannot discharge the pulp.
The first piston 56 and the second piston 58 are respectively connected to the piston rod 57, in this embodiment, the second piston 58 is integrally connected to the axial second end of the piston rod 57, and the first piston 56 is screwed to the piston rod 57. A connecting groove 561 is recessed in a side wall of the first piston 56 facing the communication passage 59, a thread is provided on a side wall of the connecting groove 561, a thread is provided on an axial second end of the piston rod 57, and the axial second end of the piston rod 57 is connected with the first piston 56 in the connecting groove 561 through a threaded connection. After the piston rod 57 penetrates the communication channel 59, the second piston 58 is positioned in the second movable chamber 55, and then the connection between the piston rod 57 and the first piston 56 is performed; the piston rod 57 may be a clearance fit with the side wall of the communication passage 59.
The side wall of the first piston 56 facing the slurry inlet 52 is provided with a sealing block 562, the sealing block 562 penetrates through the through hole 5311 of the sealing ring 531, and the sealing block 562 is in clearance fit with the through hole 5311. A sealing ring 531 is added in the piston sleeve 5, and a sealing block 562 on the first piston 56 is in clearance fit with a through hole 5311 on the sealing ring 531, so that the sealing performance of the concrete slurry flow in the piston sleeve 5 is ensured, and the constant pressure in the grouting process is better ensured.
Referring to fig. 8, the tunnel locking anchor pipe fast grouting assembly 7 includes a first grouting connecting pipe 71, a second grouting connecting pipe 72, a grouting hose 73, two grouting joints 1 and two grouting gate valves 05, the first grouting connecting pipe 71 is provided with a first connecting end 711, a second connecting end 712 and a third connecting end 713, the first connecting end 711 and the second connecting end 712 are respectively connected with one grouting gate valve 05, and the third connecting end 713 is used for connecting a grouting machine. In this embodiment, the second connection end 712 of the first grouting connection pipe 71 is connected to the second grouting connection pipe 72 through the grouting hose 73, and the second grouting connection pipe 72 is connected to the grouting gate valve 05. A slip casting connects 1 and a slip casting gate valve 05 and corresponds and is connected, and a slip casting connects 1 and corresponds the tail end of a lock foot anchor pipe. First slip casting connecting pipe 71 is provided with a plurality of links, corresponds in a plurality of links and connects different lock foot anchor pipe to realize that a slip casting machine carries out the slip casting to two lock foot anchor pipes simultaneously, further improve work efficiency.
In this embodiment, the first grouting connecting pipe 71 is provided with a banding section 714, and in this embodiment, the third connecting end 713 of the first grouting connecting pipe 71 is located on the banding section 714; the binding section 714 is provided with a plurality of avoidance grooves 715, and the avoidance grooves 715 are arranged along the length direction of the binding section 714. When other grouting hoses are connected to the first grouting connecting pipe 711, the surface of the first grouting connecting pipe 711 is uneven due to the arrangement of the avoidance grooves 715, and when the first grouting connecting pipe 711 is connected with the grouting hose 73 through iron wires or other strip-shaped bodies, the iron wires or other strip-shaped bodies are bound in the avoidance grooves 715, so that the first grouting connecting pipe 711 and the grouting hose 73 are more stable.
The rapid grouting construction method of the tunnel locking anchor pipe comprises the following steps:
a step of installing a locking pin anchor pipe:
installing and fixing a primary support steel arch according to the construction technical requirements, and adopting drilling equipment such as a manual hand-operated air drill, a drill jumbo, an anchor rod drilling machine and the like to drill foot-locking anchor pipes at the foot parts of the legs of the steel arch, wherein the drilling equipment is connected with the anchor pipes, and the anchor pipes are drilled and synchronously installed in place in the drilling equipment, and are not installed after drilling is finished firstly; after the anchor pipe is installed in place, the leg locking anchor pipe and the steel arch frame are welded and fixed by adopting L-shaped steel bars;
grouting assembly installation:
the tail ends of the two foot-locking anchor pipes are respectively connected with a grouting connector 1, the foot-locking anchor pipes are positioned in an annular connecting channel 3 of the grouting connector 1 at the moment, and then the foot-locking anchor pipes and the grouting connectors 1 are clamped tightly by using locking pieces 6; a grouting gate valve 05 is connected to one grouting connector 1, the grouting gate valves 05 on the two locking anchor pipes are respectively connected with a first connecting end 711 and a second connecting end 712 on one first grouting connecting pipe 71, one grouting gate valve 05 is connected with a second grouting connecting pipe 72, and the second grouting connecting pipe 72 is connected with the second connecting end 712 of the first grouting connecting pipe 71 through a grouting hose 73; the third connection end 713 on the first grouting connection pipe 71 is connected with the grouting machine, wherein the grouting hose is connected with the grouting machine by using another grouting hose to be bound and connected with the binding section 714 on the first grouting connection pipe 71 by using iron wires;
grouting:
and (3) opening the grouting machine, starting grouting, closing the grouting gate valve 05 after grouting is finished, and then disassembling the locking piece 6 within about 2 to 3 minutes, and disassembling the grouting joint 1 from the tail end of the leg locking anchor pipe so as to carry out grouting construction on the leg locking anchor pipe on the other side of the tunnel.
In the construction method, one grouting machine simultaneously performs grouting on two foot-locking anchor pipes, if in the construction process, construction personnel want to perform grouting on the foot-locking anchor pipes one by one, a grouting joint 1 can be connected with a grouting gate valve 05, and the grouting gate valve 05 is connected with the grouting machine through a grouting hose 73, so that one grouting machine performs grouting on one foot-locking anchor pipe.
The grouting joint 1 is used for being installed at the tail end of a foot-locking anchor pipe, referring to fig. 9, when the grouting joint 1 is installed at the tail end of the foot-locking anchor pipe 01, the tail end of the foot-locking anchor pipe 01 is located in an annular connecting channel 3, a shell outer side plate 21 is driven to bend and deform towards the annular connecting channel 3 through a locking piece 6, the foot-locking anchor pipe 01 in the annular connecting channel 3 is clamped tightly, a pulp flowing channel 4 is arranged in the annular connecting channel 3, so that the pulp flowing channel 4 is communicated with the foot-locking anchor pipe 01, a connecting part 22 of the grouting joint 1 is connected with a grouting machine, grouting concrete enters the pulp flowing channel 4 from a pulp inlet channel 222 and flows into the foot-locking anchor pipe 01, and after grouting of the foot-locking anchor pipe 01 is completed, the grouting joint 1 is detached from the tail end of the foot-locking anchor pipe 01 through detaching the locking piece 6; slip casting of lock foot anchor pipe 01 is carried out through slip casting joint 1, gets rid of the step of lock foot anchor pipe 01 tail end welded connection pole, and the installation of slip casting joint 1 is simple swift with the dismantlement step, effectively improves work efficiency to slip casting joint 1 circulated reuse, effectively practices thrift the cost. The piston sleeve 5 is arranged in the pulp flowing channel 4, the constant pressure and the stabilization function in the grouting process are realized through the first piston 56 in the piston sleeve 5, the construction efficiency is effectively improved through the arrangement of a plurality of connecting ends on the first grouting connecting pipe 71 in the grouting assembly, and the grouting operation and the quality control of the two foot locking anchor pipes 01 are ensured. The slip casting subassembly is easy operation swift in the work progress, and is convenient effective, and leakproofness effect round pin post in the construction of whole lock foot anchor pipe 01 thoroughly solves the loaded down with trivial details operation and the not tight scheduling problem of sealing of traditional slip casting, feels because the whole preliminary bracing atress problem that slip casting inefficiency leads to when improving the slip casting plumpness.
Finally, it should be emphasized that the above-described preferred embodiments of the present invention are merely examples of implementations, rather than limitations, and that many variations and modifications of the utility model are possible to those skilled in the art, without departing from the spirit and scope of the utility model.
Claims (8)
1. Quick slip casting of tunnel lock foot anchor pipe connects, its characterized in that includes: the joint shell comprises a shell outer side plate and a connecting part, the shell outer side plate is annular, the pulp flow channel is arranged in the shell outer side plate, the pulp flow channel extends along the axial direction of the shell outer side plate, the annular connecting channel is formed between the pulp flow channel and the shell outer side plate, and the annular connecting channel is sleeved outside the pulp flow channel along the circumferential direction of the pulp flow channel;
the annular connecting channel is provided with a first opening, the first opening extends along the axial direction of the annular connecting channel, the pulp flowing channel is provided with a second opening, the second opening extends along the axial direction of the pulp flowing channel, the first opening and the second opening are respectively arranged on a first side of the joint shell, the connecting part is arranged on a second side of the joint shell, the first side and the second side are different sides of the joint shell, a pulp inlet channel is arranged in the connecting part, and the pulp inlet channel is communicated with the pulp flowing channel;
the retaining member is arranged on the outer side wall of the joint housing, and the retaining member drives the housing outer side plate to bend and deform towards the annular connecting channel.
2. The quick grouting joint for the anchor pipe of the tunnel lock foot according to claim 1, characterized in that:
the retaining member includes hoop anchor clamps and bolt, hoop anchor clamps include hoop and two protruding pieces, the hoop is followed be provided with the breach between the annular first end of hoop and the second end, two the protruding piece is based on the lateral wall arch of hoop, the breach sets up two between the protruding piece, two be provided with the screw in the protruding piece respectively, two the protruding piece the screw all with bolted connection.
3. The quick grouting joint for the anchor pipe of the tunnel lock foot according to claim 1, characterized in that:
at least one deformation channel is arranged in the shell outer side plate, the deformation channel extends along the axial direction of the shell outer side plate, and the width of the deformation channel is smaller than the thickness of the shell outer side plate.
4. The quick grouting joint for the anchor pipe of the tunnel locking foot according to any one of claims 1 to 3, characterized in that:
the grouting joint comprises a piston sleeve, the piston sleeve is arranged in the pulp flowing channel, and the radial width of the piston sleeve is smaller than that of the pulp flowing channel;
the piston sleeve is provided with a first movable chamber, a pulp inlet and a plurality of pulp outlets, the plurality of pulp outlets are arranged along the circumferential direction of the piston sleeve, the first movable chamber is communicated with the plurality of pulp outlets, the pulp inlet is communicated with the first movable chamber, the pulp inlet is communicated with the plurality of pulp outlets, and the pulp inlet is arranged in the pulp inlet channel;
and a first piston is arranged in the first movable cavity, reciprocates along the axial direction of the pulp flow channel in the first movable cavity, and can cover a plurality of pulp outlets.
5. The quick grouting joint for the tunnel lock pin anchor pipe according to claim 4, characterized in that:
a second movable chamber is arranged in the piston sleeve, a communication channel is arranged between the first movable chamber and the second movable chamber, the first piston channel, the communication channel and the second movable chamber are sequentially arranged along the axial direction of the piston sleeve, the first movable chamber is arranged close to the slurry inlet channel, and the radial width of the communication channel is respectively smaller than the width of the first movable chamber and the width of the second movable chamber;
and a second piston is arranged in the second movable cavity, a piston rod is connected between the first piston and the second piston, the piston rod is arranged in the communicating channel, and the second piston moves in the second movable cavity.
6. The quick grouting joint for the tunnel lock pin anchor pipe according to claim 4, characterized in that:
the piston sleeve is internally provided with a sealing ring, the sealing ring is arranged between the slurry inlet and the slurry outlet, a through hole is formed in the sealing ring, a sealing block is arranged on the side wall, facing the slurry inlet, of the first piston and penetrates through the through hole, and the sealing block is in clearance fit with the through hole.
7. Quick slip casting subassembly of tunnel lock foot anchor pipe, its characterized in that includes: the grouting joint is the grouting joint in any one of claims 1 to 6, one grouting joint is correspondingly connected with one grouting gate valve, the grouting connecting pipe is provided with a first connecting end, a second connecting end and a third connecting end, the first connecting end and the second connecting end are respectively connected with one grouting gate valve, and the third connecting end is used for being connected with a grouting machine.
8. The rapid grouting assembly for a tunnel lock anchor pipe according to claim 7, wherein:
the grouting connecting pipe is provided with a binding section, the binding section is provided with a plurality of avoidance grooves, and the avoidance grooves are arranged along the length direction of the binding section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121722032.4U CN216043809U (en) | 2021-07-27 | 2021-07-27 | Quick grouting joint and grouting assembly for tunnel locking anchor pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121722032.4U CN216043809U (en) | 2021-07-27 | 2021-07-27 | Quick grouting joint and grouting assembly for tunnel locking anchor pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216043809U true CN216043809U (en) | 2022-03-15 |
Family
ID=80556500
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121722032.4U Active CN216043809U (en) | 2021-07-27 | 2021-07-27 | Quick grouting joint and grouting assembly for tunnel locking anchor pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216043809U (en) |
-
2021
- 2021-07-27 CN CN202121722032.4U patent/CN216043809U/en active Active
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