CN215057406U - Extension structure is originated in rectangle push pipe slant - Google Patents
Extension structure is originated in rectangle push pipe slant Download PDFInfo
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- CN215057406U CN215057406U CN202121086365.2U CN202121086365U CN215057406U CN 215057406 U CN215057406 U CN 215057406U CN 202121086365 U CN202121086365 U CN 202121086365U CN 215057406 U CN215057406 U CN 215057406U
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Abstract
The utility model discloses an extension structure is originated in rectangle push pipe slant, include: the enclosure structure is arranged on the periphery of the pipe jacking working well; the oblique steel ring is pre-embedded at the portal in the jacking direction of the rectangular jacking pipe; the guide rail base concrete is arranged in the pipe jacking working well, a guide rail is arranged on the guide rail base concrete, and a rectangular pipe jacking machine and linkage ejector iron are arranged on the guide rail; one end of the wedge-shaped extension steel ring is fixedly connected with the oblique steel ring, and a ribbed plate is arranged at the exposed end of the wedge-shaped extension steel ring; the wedge-shaped back rest is arranged in the pipe jacking working well, a jack support is arranged on the oblique side of the wedge-shaped back rest, and the pushing jack is arranged on the jack support; and a cavity formed by the enclosure structure, the oblique steel ring, the wedge-shaped extension steel ring and the rib plate is filled with low-strength cuttable filler. The utility model provides a push pipe axis and the irregular slant problem of originating when push pipe work well out of plumb, and avoided the uneven problem of pipe push bench blade disc atress.
Description
Technical Field
The utility model relates to a push pipe construction technical field, concretely relates to extension structure is originated to rectangle push pipe slant.
Background
With the acceleration of the urbanization process, rail transit becomes one of important means for solving urban traffic congestion, subway construction is continuously promoted in each big city, mechanized construction gradually becomes the mainstream of a subway construction method, and especially in recent years, construction at subway entrances and exits by adopting a rectangular pipe jacking method becomes a new hot spot. However, subways are usually built in urban busy areas, and due to the fact that urban land utilization is short and arrangement conditions of underground pipelines are complex, the push pipe working well must be adjusted according to actual conditions, so that the push axis inevitably inclines irregularly from left to right or up and down, the inclination angle is 0-90 degrees, a cutter head of the push pipe machine cannot cut soil on the front side, and the phenomena of axis deviation and cutter head eccentric wear are easily caused due to uneven stress. And when the axis of the pipe jacking machine is inclined upwards in the vertical direction, the pipe jacking machine and the pipe joints are subjected to the action of gravity, so that the pipe jacking machine and the pipe joints are easy to retreat, the installation space of the next pipe joint is compressed, and the next pipe joint cannot be installed.
The patent of application number 201920947129.1 discloses a rectangle push pipe skew construction structures, its technical scheme is for setting up pre-buried slant stagnant water steel ring on the side wall, but this structure is the slant only for the horizontal direction, can't solve the vertical direction slope problem, and push bench cutter head slant cutting easily causes the phenomenon of axis skew, cutter head eccentric wear.
The patent of application number 201010574076.7 discloses a construction method for oblique hole outlet of a rectangular pipe jacking machine in a closed space, which comprises the following steps: sealing the receiving well, sealing the entrance and exit of the channel by using a rigid retaining wall, backfilling yellow sand in the receiving well, backfilling in layers, laying a steel plate as a platform for later translation of the pipe jacking machine, chiseling and backfilling concrete at the exit portal, adjusting various parameters, exiting the pipe jacking machine, stopping and positioning the rectangular pipe jacking machine after exiting the tunnel, grouting pipe joints in the portal area, plugging the portal, clearing earthwork, translating the rectangular pipe jacking machine, aligning and translating the rectangular pipe jacking machine, and hoisting holes. According to the construction method, the tunnel portal concrete is chiseled off and the yellow sand is backfilled, and the pipe jacking machine enters the receiving well in a tunneling mode, but the construction method also solves the problem that the axis is obliquely received in the horizontal direction, does not solve the problem of inclination in the vertical direction, and does not consider the problem of pipe joint backfilling.
The information disclosed in this background section is only for enhancement of understanding of the general background of the invention and should not be taken as an acknowledgement or any form of suggestion that this information constitutes prior art already known to a person skilled in the art.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide an extension structure is originated to rectangle push pipe slant to solve the problem that proposes among the above-mentioned background art.
In order to achieve the above object, the utility model provides an extension structure is originated to rectangle push pipe slant, include: the enclosure structure is arranged on the periphery of the pipe jacking working well; the oblique steel ring is pre-embedded at the portal in the jacking direction of the rectangular jacking pipe and embedded into the side wall of the jacking pipe working well; the guide rail base concrete is arranged in the pipe jacking working well, a guide rail is arranged on the guide rail base concrete, the direction of the guide rail is parallel to the direction of a jacking axis, and a rectangular pipe jacking machine and linkage jacking iron are arranged on the guide rail; one end of the wedge-shaped extension steel ring is fixedly connected with the oblique steel ring, and a ribbed plate is arranged at the exposed end of the wedge-shaped extension steel ring; the wedge-shaped back rest is arranged in the pipe-jacking working well, the vertical surface side of the wedge-shaped back rest is attached to the inner wall of the side wall of the pipe-jacking working well, the inclined surface side of the wedge-shaped back rest is provided with a jack support, and the pushing jack is arranged on the jack support; the cutting device comprises a support structure, an oblique steel ring, a wedge-shaped extension steel ring, a rib plate, a cutting machine cutter head, a cutting machine, a rectangular push bench, a linkage ejector iron and a cutting machine tool head, wherein a cavity formed by the support structure, the oblique steel ring, the wedge-shaped extension steel ring and the rib plate is filled with low-strength cutting filler, one surface of the cutting filler, which is in contact with the push bench cutter head, is perpendicular to a jacking axis, and when the push bench cutter head cuts the cutting filler, a space formed between the rectangular push bench and the linkage ejector iron is used for placing a pipe joint.
In a preferred embodiment, the stopping devices are installed on two sides of the jack support on the inclined surface side of the wedge-shaped backrest and comprise stopping steel plates, I-shaped steel ribs and bolts, corresponding bolt through holes are formed in the positions, corresponding to the pipe joint side face hoisting holes, of one end, close to the rectangular pipe jacking machine, of the stopping steel plates, the bolts of the stopping devices are inserted into the pipe joint hoisting holes through the bolt through holes, and the other end of each stopping steel plate is connected with the wedge-shaped backrest in a welded mode.
In a preferred embodiment, the size of the through hole of the bolt of the retaining device is 2cm larger than the hoisting hole on the side surface of the pipe joint, and the size of the bolt is 2cm smaller than the diameter of the hoisting hole of the pipe joint.
In a preferred embodiment, the soil facing surface reinforcing steel bars of the building envelope in the range of the pipe jacking working well door are made of glass fiber reinforcing steel bars, and the soil backing surface of the building envelope is made of reinforcing steel bars.
In a preferred embodiment, the tail end of the cylinder of the pushing jack abuts against the inclined surface side of the wedge-shaped back rest, and the piston rod end of the pushing jack is connected with the linkage ejector iron.
In a preferred embodiment, the linkage top iron is an integrated structure formed by connecting annular top iron and U-shaped top iron, the U-shaped top iron is connected with the pushing jack in a bearing-inserting mode, a plurality of grooves are welded on the contact side of the U-shaped top iron and the pushing jack, the number of the grooves is equal to that of the pushing jacks, symmetrical through holes are formed in the groove walls of the grooves, a through hole is formed in the end of a piston rod of the pushing jack, a piston rod of the pushing jack is inserted into the groove to be connected with the piston rod of the pushing jack into a whole through a bolt, and therefore the annular top iron and the U-shaped top iron are driven to move back and forth.
In a preferred embodiment, the section of the oblique steel ring is L-shaped, the oblique steel ring is integrally oblique-type rectangular, the oblique direction is the same as the axial direction of the pipe jacking machine, the diameter ratio of the inner ring is larger than the diameter of the rectangular pipe jacking machine, a plurality of steel bars are welded on one side of the contact surface of the oblique steel ring and concrete, a plurality of bolt holes are annularly arranged at equal intervals at the L-shaped short end of the oblique steel ring, and the stud bolts are embedded in the bolt holes of the oblique steel ring.
In a preferred embodiment, the inner side space of the wedge-shaped extension steel ring is rectangular, the diameter ratio of the inner side space is larger than the diameter of a rectangular pipe jacking machine, longitudinal and transverse ribs are arranged on the outer surface of the wedge-shaped extension steel ring at equal intervals, lateral ring plates are arranged at two ends of the wedge-shaped extension steel ring, a plurality of bolt holes are arranged on the ring plates at equal intervals, and one side of the wedge-shaped extension steel ring is connected with an oblique steel ring pre-embedded in the side wall of the pipe jacking working well through a stud.
In a preferred embodiment, the other side of the wedge-shaped extension steel ring is connected with the rubber curtain cloth and the curtain cloth pressing plate through bolts.
In a preferred embodiment, the wedge-shaped rear backrest is formed by welding five rear backrest steel plates to form a box body structure of a pentahedron, concrete is injected into the box body structure, and lifting lugs are welded at two sides of a vertical jacking axis at an opening of the box body structure and used for hoisting the wedge-shaped rear backrest.
Compared with the prior art, the utility model discloses a rectangle push pipe slant extension structure of originating beneficial effect is: the utility model discloses an add extension structure at the direction entrance to a cave of advancing in the top, at envelope, slant steel ring, wedge extension steel ring and the inside reducible stopping of filling of low strength of cavity that the floor is constituteed, guarantee that reducible stopping terminal surface is perpendicular with the axis of advancing in the top, the pipe pushing jack blade disc can openly cut perpendicularly, need not the end and consolidates. And the pipe joint is prevented from retreating by installing a retreat-preventing device on the wedge-shaped backrest, and finally the starting of jacking is finished. The utility model provides a problem is originated to irregular slant when push pipe axis and push pipe working well out of plumb, avoided push bench blade disc atress uneven, prevent that the deviation of jacking axis from transfiniting, blade disc eccentric wear, and need not the end and consolidate, practiced thrift construction cost.
Drawings
Fig. 1 is a horizontal sectional view of a rectangular pipe jacking obliquely originating and extending structure according to another preferred embodiment of the present invention.
Fig. 2 is a longitudinal section of the rectangular pipe jacking slant originating and extending mechanism of the present invention.
Fig. 3 is a schematic front view of the retaining device of the present invention.
Fig. 4 is a schematic side view of the retaining device of the present invention.
Fig. 5 is a schematic structural view of the wedge-shaped rear backrest of the present invention.
Fig. 6 is a horizontal sectional view of the oblique steel ring of the present invention.
Fig. 7 is a longitudinal sectional view of the oblique steel ring of the present invention.
Fig. 8 is a front view of the oblique steel ring of the present invention.
Fig. 9 is a cross-sectional plan view of the wedge-shaped extended steel ring of the present invention.
Fig. 10 is a longitudinal sectional view of the wedge-shaped extended steel ring of the present invention.
Description of reference numerals:
1-a building enclosure, 2-an oblique steel ring, 21-a pipe jacking working well side wall, 22-a stud, 23-a bolt, 24-a steel bar, 25-a bolt hole of the oblique steel ring, 26-a nut, 3-a guide rail base concrete, 4-a guide rail, 5-a wedge-shaped extension steel ring, 51-a bolt hole of the wedge-shaped extension steel ring, 6-a rib plate, 7-a cuttable filler, 8-a wedge-shaped backrest, 81-a backrest steel plate, 82-a concrete, 9-a jack bracket, 10-a propelling jack, 11-a rectangular pipe jacking machine, 12-a backstop device, 121-a backstop steel plate, 122-an I-steel rib, 123-a bolt, 124-a bolt through hole, 13-a ring-shaped top iron, 14-U-shaped top iron, 15-a top iron connecting block, 16-curtain cloth rubber, 17-curtain cloth pressing plate, 18-propulsion oil cylinder and 19-oil cylinder bracket.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below. The embodiments of the present invention, all other embodiments obtained by a person skilled in the art without creative work, all belong to the protection scope of the present invention.
Example 1
As shown in fig. 1-10, the rectangular pipe jacking slant starting extension structure of the preferred embodiment of the present invention comprises a space enclosing structure 1, a slant steel ring 2, a guide rail 4, a wedge-shaped extension steel ring 5, a low-strength cuttable filler 7, a wedge-shaped backrest 8, a backstop device 12 and a linkage top iron.
Specifically, the enclosure structure 1 is arranged outside the side wall 21 of the pipe jacking working well, the reinforcement of the earth-facing surface of the enclosure structure in the range of the working well door is made of glass fiber reinforcement, and a cutter head of the pipe jacking machine can directly cut. The oblique steel ring 2 is pre-embedded at the portal in the jacking direction of the rectangular jacking pipe and embedded into the side wall 21 of the jacking pipe working well. The guide rail base concrete 3 is arranged in the pipe jacking working well, the guide rail 4 is arranged on the guide rail base concrete 3, the direction of the guide rail 4 is parallel to the direction of a jacking axis, the end part of the guide rail 4 is abutted against the end part of the jack support 9, and the guide rail 4 is provided with a rectangular pipe jacking machine 11 and linkage jacking iron. One end of the wedge-shaped extension steel ring 5 is fixedly connected with the oblique steel ring 2, and a ribbed plate 6 is installed at the exposed end of the wedge-shaped extension steel ring 5 to reinforce the strength of the wedge-shaped extension steel ring. The wedge-shaped back rest 8 is arranged in the pipe-jacking working well, the vertical surface side of the wedge-shaped back rest is attached to the inner wall of the side wall of the pipe-jacking working well, the inclined surface side of the wedge-shaped back rest is provided with a jack support 9, and a pushing jack 10 is placed on the jack support 9. A cavity formed by the enclosure structure 1, the oblique steel ring 2, the wedge-shaped extension steel ring 5 and the rib plate 6 is filled with low-strength cuttable filler 7, one surface of the cuttable filler 7 in contact with a cutter head of the pipe jacking machine is perpendicular to a jacking axis, and when the cutter head of the pipe jacking machine cuts the cuttable filler, a space formed between the rectangular pipe jacking machine and the linkage ejector iron is used for placing a pipe joint 15.
Furthermore, two sides of the jack support 9 on the inclined surface side of the wedge-shaped back rest are provided with retaining devices 12. As shown in fig. 3-4, the stopping device includes a stopping steel plate 121, an i-steel rib 122 and a bolt 123, a corresponding number of bolt through holes 124 are provided at a position of one end of the stopping steel plate 121 close to the rectangular push bench 11 corresponding to the pipe joint side hoisting holes, the size of the bolt through hole 124 is 2cm larger than that of the pipe joint side hoisting holes, the bolt 123 of the stopping device is inserted into the pipe joint hoisting holes through the bolt through hole 124, the size of the bolt 123 is 2cm smaller than the diameter of the pipe joint hoisting holes, and the other end of the stopping steel plate 121 is welded to the wedge-shaped backrest.
Further, as shown in fig. 2 and 6-8, the cross section of the oblique steel ring is L-shaped, the oblique steel ring is overall in an oblique rectangle shape, the oblique direction is the same as the axial direction of the pipe pushing jack (as shown by arrows in fig. 6 and 7), the diameter ratio of the inner ring is greater than the diameter of the rectangular pipe pushing jack 11, a plurality of steel bars 24 are welded on one side of the contact surface of the oblique steel ring 2 and the concrete, the steel bars 24 are used for rigidly connecting the oblique steel ring 2 with the side wall 21 of the pipe pushing working well, and the other end of the steel bar 24 must be inserted into the concrete, so that the oblique steel ring 2 is firmly embedded into the side wall 21 of the pipe pushing working well. A plurality of bolt holes are annularly distributed at equal intervals at the L-shaped short end of the oblique steel ring, and the stud bolts 22 are embedded in the bolt holes 25 of the oblique steel ring.
Further, as shown in fig. 2 and fig. 9-10, the inner side space of the wedge-shaped extension steel ring 5 is rectangular-like, the diameter ratio of the inner side space is larger than the diameter of the rectangular pipe jacking machine 11, rib plates 6 which are arranged at equal intervals are arranged on the outer surface of the wedge-shaped extension steel ring 5, the outer surface of the wedge-shaped extension steel ring is parallel to the jacking direction (the direction shown by arrows in fig. 9 and 10), lateral ring plates are arranged at two ends of the wedge-shaped extension steel ring 5, a plurality of bolt holes are arranged at equal intervals on the ring plates, one side of the wedge-shaped extension steel ring 5 is connected with an oblique steel ring 2 pre-embedded in the side wall of the pipe jacking working well through a stud 22, and the other side of the wedge-shaped extension steel ring is connected with a curtain cloth rubber 16 and a curtain cloth pressing plate 17 through bolts 23, so as to additionally enhance the water and sand gushing prevention capability.
Example 2
In a preferred embodiment, as shown in fig. 5, the wedge-shaped rear backrest is formed by welding five rear backrest steel plates 81 to form a box structure of a pentahedron, concrete 82 is injected into the box structure, and lifting lugs are welded on two sides of a vertical jacking axis at an opening of the box structure for hoisting the wedge-shaped rear backrest.
Further, the tail end of the cylinder body of the pushing jack 10 abuts against the inclined surface side of the wedge-shaped back rest, and the piston rod end of the pushing jack is connected with the linkage ejector iron. Specifically, the linkage top iron is an integral structure formed by connecting an annular top iron 13 and a U-shaped top iron 14 at a waist line, and the annular top iron 13 and the U-shaped top iron 14 are connected through a top iron connecting block 15. The U-shaped top iron 14 is connected with the pushing jack 10 in a socket-and-spigot manner, a plurality of grooves are welded on the contact side of the U-shaped top iron 14 and the pushing jack 10, the number of the grooves is equal to that of the pushing jacks, symmetrical through holes are formed in the groove wall of each groove, a through hole is formed in the end of a piston rod of the pushing jack, a piston rod of the pushing jack is inserted into each groove, and the grooves and the piston rod of the pushing jack are connected into a whole through bolts to drive the annular top iron 13 and the U-shaped top iron 14 to move back and forth.
Example 3
The following introduces an originating construction method of a rectangular pipe jacking inclined originating extension structure, which adopts the preferred embodiment of the invention, and comprises the following steps:
step one, constructing a building envelope 1 at the periphery of the pipe-jacking working well. Specifically, the steel bars of the earth-facing surface of the building envelope 1 in the range of the pipe jacking working well door are made of glass fiber bars, and a cutter head of the pipe jacking machine can directly cut. The back soil surface (one side of the pipe jacking working well) of the building envelope 1 adopts steel bars.
And step two, excavating the pipe-jacking working well, and embedding the oblique steel ring 2 at the portal in the jacking direction.
And step three, chiseling the enclosure structure 1 at the position of the tunnel portal where the jacking pipe starts, breaking reinforced concrete on the back soil surface, and reserving glass fiber reinforced concrete (the thickness of which is about one fifth of the thickness of the enclosure structure) on the soil-facing surface.
And step four, constructing guide rail base concrete 3 in the pipe jacking working well according to the jacking direction, and installing a guide rail 4 on the guide rail base concrete, wherein the direction of the guide rail 4 is parallel to the direction of the jacking axis.
Installing a wedge-shaped extension steel ring 5, installing a ribbed plate 6 at the exposed end of the wedge-shaped extension steel ring 5, filling a cavity formed by the enclosure structure 1, the oblique steel ring 2, the wedge-shaped extension steel ring 5 and the ribbed plate 6 with low-strength machinable filler 7, directly cutting a cutter head of the pipe jacking machine, and enabling one surface of the machinable filler 7, which is in contact with the cutter head of the pipe jacking machine, to be perpendicular to the jacking axis. Specifically, the machinable filler 7 is one of low-strength foam concrete, low-strength cement mortar filler and low-strength concrete anchor spraying material.
And sixthly, hoisting the wedge-shaped back rest 8, the jack support 9, the pushing jack 10 and the rectangular pipe jacking machine 11.
And step seven, putting the linkage jacking iron into the pipe jacking working well, connecting the linkage jacking iron with a pushing jack 10, and installing retaining devices 12 at two sides of a jack support 9 on the inclined surface side of the wedge-shaped back rest.
And step eight, pushing the rectangular pipe jacking machine 11 to move forwards by using the pushing jack 10 to finish the inclined starting of the rectangular pipe jacking.
Specifically, the installation process of the wedge-shaped extension steel ring 5 is as follows: firstly, a nut 26 is arranged on one side of the oblique steel ring 2, the oblique steel ring 2 is installed well, a stud 22 is screwed into the nut 26, one end of the stud 22 is exposed, the exposed end penetrates through a bolt hole 51 of the wedge-shaped extension steel ring, and finally the nut is screwed, so that the wedge-shaped extension steel ring 5 and the oblique steel ring 2 are fixedly connected.
Specifically, in the sixth step, hoisting the wedge-shaped rear backrest 8, the jack support 9, the push jack 10 and the rectangular pipe jacking machine 11 includes: the wedge-shaped rear backrest 8 with the lifting lugs is placed in the pipe jacking working well through a crane, the inclined side of the wedge-shaped rear backrest is in contact with the pushing jack 10, the pushing jack 10 and the jack support 9 are hung in the pipe jacking working well, the center of the jack support 9 coincides with the jacking axis, the rectangular pipe jacking machine 11 is placed in the pipe jacking working well, assembly and fixation are carried out, and the wedge-shaped rear backrest is prevented from sliding towards the direction of the wedge-shaped rear backrest due to gravity.
Specifically, in the seventh step, the linkage top iron is an integral structure formed by connecting an annular top iron 13 and a U-shaped top iron 14, and the annular top iron 13 and the U-shaped top iron 14 are connected through a top iron connecting block 15. The U-shaped top iron 14 is connected with the pushing jack 10 in a socket-and-spigot manner, a plurality of grooves are welded on the contact side of the U-shaped top iron 14 and the pushing jack 10, the number of the grooves is equal to that of the pushing jacks, symmetrical through holes are formed in the groove wall of each groove, a through hole is formed in the end of a piston rod of the pushing jack, a piston rod of the pushing jack is inserted into each groove, and the grooves and the piston rod of the pushing jack are connected into a whole through bolts to drive the annular top iron 13 and the U-shaped top iron 14 to move back and forth.
Specifically, in the step eight, pushing the rectangular push bench 11 forward by using the pushing jack 10 to complete the diagonal launching of the rectangular push bench comprises: pushing a rectangular push bench 11 to move forwards by using a pushing jack 10, cutting a low-strength cuttable filler 7 by a push bench cutter head until a pipe joint 15 can be placed in a space, placing the pipe joint 15 between the rectangular push bench 11 and an annular ejector 13 by using a crane, continuously tunneling the rectangular push bench 11 until a pipe joint 15 can be placed in the space, coinciding the central line of a pipe joint hoisting hole with the central line of a bolt through hole of a backstop device, manually inserting a bolt 123 into a bolt through hole 124 of the backstop device to enter the pipe joint hoisting hole so as to prevent the rectangular push bench 11 and the pipe joint 15 from retreating, pushing the jack 10 to retract, and repeating the construction of the next pipe joint.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. The utility model provides an extension structure is originated in slant of rectangle push pipe which characterized in that: the rectangular jacking pipe obliquely originating and extending structure comprises:
the enclosure structure is arranged on the periphery of the pipe jacking working well;
the oblique steel ring is pre-embedded at the portal in the jacking direction of the rectangular jacking pipe and embedded into the side wall of the jacking pipe working well;
the guide rail base concrete is arranged in the pipe jacking working well, a guide rail is arranged on the guide rail base concrete, the direction of the guide rail is parallel to the direction of a jacking axis, and a rectangular pipe jacking machine and a linkage jacking iron are arranged on the guide rail;
one end of the wedge-shaped extension steel ring is fixedly connected with the oblique steel ring, and a ribbed plate is arranged at the exposed end of the wedge-shaped extension steel ring;
the wedge-shaped back rest is arranged in the pipe jacking working well, the vertical surface side of the wedge-shaped back rest is attached to the inner wall of the side wall of the pipe jacking working well, a jack support is arranged on the oblique surface side of the wedge-shaped back rest, and the pushing jack is arranged on the jack support;
the cutting device comprises a support structure, an oblique steel ring, a wedge-shaped extension steel ring, a rib plate, a cutting machine tool disc and a rectangular pipe jacking machine, wherein a cavity formed by the support structure, the oblique steel ring, the wedge-shaped extension steel ring and the rib plate is filled with a low-strength cutting filler, one surface of the cutting filler, which is in contact with the pipe jacking machine tool disc, is perpendicular to a jacking axis, and when the cutting filler is cut by the pipe jacking machine tool disc, a space formed between the rectangular pipe jacking machine and a linkage jacking iron is used for placing a pipe joint.
2. The rectangular pipe jacking oblique originating extension structure of claim 1, wherein: backstop device is installed to the jack support both sides of back slant face side behind the wedge, the backstop device includes backstop steel sheet, I-steel rib and bolt, the one end of the nearly rectangle push bench of backstop steel sheet is equipped with the bolt through-hole of corresponding quantity with the position that tube coupling side hole of hoist corresponds, the bolt of backstop device inserts the tube coupling hole of hoist through the bolt through-hole, the backstop steel sheet other end with back welded connection behind the wedge.
3. The rectangular pipe jacking obliquely originating and extending structure according to claim 2, wherein: the size of a through hole of a bolt of the stopping device is 2cm larger than that of a hoisting hole in the side surface of the pipe joint, and the size of the bolt is 2cm smaller than the diameter of the hoisting hole of the pipe joint.
4. The rectangular pipe jacking oblique originating extension structure of claim 1, wherein: and the soil facing surface of the enclosure structure in the range of the pipe-jacking working well door is made of glass fiber reinforced bars, and the soil backing surface of the enclosure structure is made of reinforced bars.
5. The rectangular pipe jacking oblique originating extension structure of claim 1, wherein: the tail end of the cylinder body of the pushing jack is abutted against the inclined surface side of the wedge-shaped back rest, and the piston rod end of the pushing jack is connected with the linkage ejector iron.
6. The rectangular pipe jacking oblique originating extension structure of claim 5, wherein: the linkage ejector iron is an integrated structure formed by connecting annular ejector iron and U-shaped ejector iron, the U-shaped ejector iron is connected with the pushing jack in a bearing and inserting mode, a plurality of grooves are welded on the contact side of the U-shaped ejector iron and the pushing jack, the number of the grooves is equal to that of the pushing jacks, symmetrical through holes are formed in the groove walls of the grooves, a through hole is formed in the end of a piston rod of the pushing jack, a piston rod of the pushing jack is inserted into the groove, and the grooves and the piston rod of the pushing jack are connected into a whole through bolts so as to drive the annular ejector iron and the U-shaped ejector iron to move back and forth.
7. The rectangular pipe jacking diagonal originating extension structure of claim 6, wherein: the section of the oblique steel ring is L-shaped, the oblique steel ring is integrally in an oblique rectangle shape, the oblique direction is the same as the axis direction of the pipe pushing jack, the diameter ratio of the inner ring is larger than the diameter of the rectangular pipe pushing jack, a plurality of steel bars are welded on one side of the contact surface of the oblique steel ring and concrete, a plurality of bolt holes are arranged in the L-shaped short end ring of the oblique steel ring at equal intervals, and the stud is embedded in the bolt holes of the oblique steel ring.
8. The rectangular pipe jacking diagonal originating extension structure of claim 7, wherein: the wedge-shaped extension steel ring is characterized in that the inner side space of the wedge-shaped extension steel ring is rectangular-like, the diameter ratio of the inner side space is larger than the diameter of a rectangular pipe jacking machine, rib plates which are arranged at intervals are arranged on the outer surface of the wedge-shaped extension steel ring at intervals, lateral ring plates are arranged at two ends of the wedge-shaped extension steel ring, a plurality of bolt holes are arranged on the ring plates at intervals, and one side of the wedge-shaped extension steel ring is connected with the oblique steel ring which is embedded in the side wall of the pipe jacking working well through the double-end stud.
9. The rectangular pipe jacking diagonal originating extension structure of claim 8, wherein: the other side of the wedge-shaped extension steel ring is connected with the rubber curtain cloth and the curtain cloth pressing plate through bolts.
10. The rectangular pipe jacking oblique originating extension structure of claim 1, wherein: the wedge-shaped rear backrest is formed by welding five rear backrest steel plates to form a box body structure of a pentahedron, concrete is injected into the box body structure, lifting lugs are welded on two sides of an opening of the box body structure, which is vertically jacked into an axis, and the wedge-shaped rear backrest is used for hoisting.
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| CN202121086365.2U CN215057406U (en) | 2021-05-20 | 2021-05-20 | Extension structure is originated in rectangle push pipe slant |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113294166A (en) * | 2021-05-20 | 2021-08-24 | 北京建工土木工程有限公司 | Large-section rectangular jacking pipe oblique starting method |
| CN115199813A (en) * | 2022-07-19 | 2022-10-18 | 北京城建设计发展集团股份有限公司 | Construction process for starting end of oblique jacking pipe |
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2021
- 2021-05-20 CN CN202121086365.2U patent/CN215057406U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113294166A (en) * | 2021-05-20 | 2021-08-24 | 北京建工土木工程有限公司 | Large-section rectangular jacking pipe oblique starting method |
| CN113294166B (en) * | 2021-05-20 | 2023-11-14 | 北京建工土木工程有限公司 | Oblique starting method for large-section rectangular jacking pipe |
| CN115199813A (en) * | 2022-07-19 | 2022-10-18 | 北京城建设计发展集团股份有限公司 | Construction process for starting end of oblique jacking pipe |
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Inventor after: Zhao Hongyan Inventor after: Li Shengguang Inventor after: Wang Xijun Inventor after: Ma Yunxin Inventor after: Wu Youheng Inventor after: Wang Gencheng Inventor after: Li Sen Inventor after: Lu Huitang Inventor after: Kan Baocun Inventor before: Zhao Hongyan Inventor before: Li Shengguang Inventor before: Wang Xijun Inventor before: Ma Yunxin Inventor before: Wu Youheng Inventor before: Wang Gencheng Inventor before: Li Sen Inventor before: Lu Huitang Inventor before: Kan Baocun |