CN208441834U - A kind of rectangular top pipe reception sleeve arrangement - Google Patents

A kind of rectangular top pipe reception sleeve arrangement Download PDF

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Publication number
CN208441834U
CN208441834U CN201821000426.7U CN201821000426U CN208441834U CN 208441834 U CN208441834 U CN 208441834U CN 201821000426 U CN201821000426 U CN 201821000426U CN 208441834 U CN208441834 U CN 208441834U
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China
Prior art keywords
sleeve
flange
rectangular top
portal
top pipe
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CN201821000426.7U
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Chinese (zh)
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陈世友
张九宇
范磊
张军广
董艳萍
王小涛
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China Railway Engineering Equipment Group Co Ltd CREG
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China Railway Engineering Equipment Group Co Ltd CREG
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Abstract

The utility model discloses a kind of rectangular top pipes with sleeve arrangement is received, and solves the problems, such as that portal is poorly sealed when appearing, constructional difficulties, safety coefficient and ineffective for rectangular top pipe driving in the prior art.The utility model includes portal flange and counter-force support frame, the reception sleeve includes sleeve front assembly, sleeve rear assembly and sleeve end cap, one end of sleeve front assembly is connected with portal flange, the other end and sleeve rear assembly are tightly connected, and sleeve end cap is sealingly disposed in the rear portion of sleeve rear assembly;One end of the counter-force support frame is connected with wall, the other end is equipped with reaction frame, and the front end of reaction frame is equipped with pretightning force supporting mechanism, and pretightning force supporting mechanism is corresponding with sleeve end cap.The utility model using the device can effectively avoid push pipe appear stratum caused by Shi Yinshui or sand running-down be lost, the accidents such as ground landslide, improve construction safety, reduce rectangular top pipe construction risk.

Description

A kind of rectangular top pipe reception sleeve arrangement
Technical field
The utility model relates to technical field of tunnel construction, particularly relate to a kind of rectangular top pipe reception sleeve arrangement.
Background technique
Big cross section rectangular pipe jacking machine have not excavated pavement, not close traffic, do not move pipeline, be low noise, environmental-friendly Etc. advantages, can effectively be promoted urban transportation tunnel construction Mechanization Level, new solution is provided for Urban Underground Space Excavation Certainly scheme.
Big cross section rectangular pipe jacking machine in the construction process, since received well end environment is complicated, when rectangular top pipe reaches, adds Solid cannot be included rectangular top pipe, and after abolishing portal, portal sealing is it is difficult to ensure that resist when rectangular top pipe driving is appeared Residence launching stress is obtained, once underground water breakdown portal sealing, seal failure, underground water leak out the sand being mingled in stratum, Cause stratum to be lost, causes accidents, the rectangular top pipes such as ground landslide that cannot smoothly reach.
Utility model content
For the deficiency in above-mentioned background technique, the utility model proposes a kind of rectangular top pipes with sleeve arrangement is received, and solves It has determined rectangular top pipe driving in the prior art portal is poorly sealed when appearing, constructional difficulties, safety coefficient and ineffective Problem.
The technical solution of the utility model is achieved in that a kind of rectangular top pipe receives sleeve arrangement, including portal Flange and counter-force support frame, portal flange are connected with the pre-buried steel loop in portal, and reception sleeve, institute are connected on portal flange Stating and receiving sleeve includes sleeve front assembly, sleeve rear assembly and sleeve end cap, one end and the portal method of sleeve front assembly Orchid is connected, the other end and sleeve rear assembly are tightly connected, and sleeve end cap is sealingly disposed in the rear portion of sleeve rear assembly;Institute The one end for stating counter-force support frame is connected with wall, the other end is equipped with reaction frame, and the front end of reaction frame is equipped with pretightning force and supports machine Structure, pretightning force supporting mechanism are corresponding with sleeve end cap.
The pretightning force supporting mechanism includes several jack being uniformly arranged on reaction frame and is connected to socket end Several stretching steel cylinders covered, the outer end of stretching steel cylinder are equipped with the coordinating block being obliquely installed, and reaction frame is equipped with wedge block Support base, wedge block support base and coordinating block correspond, and wedge block is equipped between coordinating block and reaction frame.
The counter-force support frame includes several brace steel posts being arranged in a ring, and one end of brace steel post passes through connection method Orchid is connected with the expansion bolt being embedded in wall, and the other end of brace steel post is connected with reaction frame.
The reaction frame includes six piecemeals, and six piecemeals form rectangular frame.
The front end face of the portal flange is bolted with sleeve front assembly, the front end face and sleeve of portal flange Alignment pin and O-ring seal are equipped between front assembly;The portal flange includes upper half flange and lower half flange, upper half method Orchid is connect with lower half flange by bolt seal, and upper half flange and lower half flange form round rectangle;Upper half flange and lower half method Gusset is equipped on blue outer ring surface.
The sleeve front assembly includes upper ring and lower ring, and upper ring is connected with lower ring by bolt seal, on Ring and lower ring form round rectangle, and upper ring is equipped with box-structure stiffening plate, and lower ring is equipped with T-steel structural strengthening Plate.
The sleeve rear assembly includes upper member and lower member, and upper member is connected with lower member by bolt seal, on Component and lower member form round rectangle, are equipped with T-steel structural reinforcement member on upper member and lower member;Upper member and lower member Junction bilateral symmetry is equipped with side diagonal brace.
The upper member is equipped with charging connector, several pressure gauge components and several water inlet unions, pressure Table component and water inlet union are separately positioned on the two sides of charging connector;Lower member is equipped at least one slag notch connector With several water inlet unions.
The sleeve end cap includes upper end cover and lower cover, and upper end cover is connected with lower cover by bolt seal, upper end cover With lower cover composition round rectangle, the front end face of upper end cover and lower cover is equipped with sealing plate, the rear end of upper end cover and lower cover Face is equipped with arch stiffening plate.
A kind of rectangular top pipe construction method for receiving sleeve arrangement, includes the following steps: that (1) receives sleeve installation process:
1. hanging in portal flange, and it is fixed on pre-buried steel loop by spot welding, makes center and the prior confirmation of portal flange The center line of good portal is overlapped;
2. keeping portal flange contact facings smooth, end face seal glue is smeared on portal flange and installing sealing ring and positioning Pin shaft, installation sleeve front assembly, is fixed by bolts, then installation sleeve rear assembly;
3. sleeve front assembly and sleeve rear assembly are after the installation is completed, sleeve end cap is hung in, and smears end face seal glue And mounting O-shaped rings, socket end lid is fastened on sleeve rear assembly using bolt;
4. reaction frame, counter-force support frame, side diagonal brace are installed in place, according to scene positioning by pretightning force supporting mechanism The steel cylinder that holds out against be welded on socket end and cover, wedge block support base is welded in the corresponding position of reaction frame;
5. being evenly arranged jack between sleeve end cap and reaction frame, is applied using jack to portal flange and pre-tightened Power, it should be noted that checking whether reaction frame loosens in pre-compaction process, whether the bolt for receiving sleeve connection loosens, occur it is abnormal and When take measures;In the case where ensuring non-loosening, portal flange and pre-buried steel loop are fully welded;
6. after portal flange and its stiffener plate are welded, receiving sleeve with jack pair and portal flange applying preload Power installs wedge block between sleeve end cap and reaction frame, forms the support of portal pretightning force;Then jack is withdrawn;
(2) rectangular top pipe is appeared process:
1. carrying out pressure maintaining experiment to sleeve is received: the pressure-air of input 0.3Mpa into reception sleeve, pressure maintaining 12 hours, If the air pressure received in sleeve after 12 hours is less than 0.02Mpa, meet the requirements, otherwise search leakaging cause and repairs;
2. cutting portal, and dregs is removed by the discharging device of rectangular top pipe, after the completion of portal is cut, is covered to receiving Cylinder lower section pours mortar pedestal, is used to support the self weight after rectangular top pipe is appeared;
3. by the dregs that filling rectangular top pipe excavates out into reception sleeve of the charging interface on sleeve rear assembly, and It is filled the water by water inlet union into reception ferrule barrel, makes to receive the hydraulic pressure that sleeve inner pressure is equal to same depth;
4. rectangular top pipe tunnels, when rectangular top pipe will appear, strict control misalignment of axe is answered, it is ensured that rectangular pipe jacking machine peace Enter portal circle entirely;
5. after rectangular top pipe is appeared, reinforcing portal device, and ensure the anhydrous outflow of portal, completing to rectangular top pipe into hole Afterwards, dregs mud is completely exhausted out by the slag notch connector of the discharging device of rectangular top pipe and sleeve rear assembly;
6. after mud is thoroughly discharged in ferrule barrel to be received, successively removing and receiving sleeve and its auxiliary equipment.
The utility model is that a kind of rectangular top pipe receives sleeve arrangement and its construction method, using closed reception scheme;I.e. Outside portal, it is connected using special reception sleeve with the pre-buried steel loop of portal, is reinforced in hole grouting with small pipe;It is carried out in tunnel Radial grouting after tube coupling wall after reception sleeve is installed, backfills the media such as dregs receiving, receives pre-add in sleeve in sleeve Certain pressure, identical as native storehouse notch pressure, then rectangular top pipe is directly tunneled to receiving in sleeve, and whole process has safely Effect, improves construction efficiency.The utility model can effectively avoid push pipe from appearing Shi Yinshui or sand running-down and lead using the device The accidents such as the stratum of cause is lost, ground caves in, improve construction safety, reduce rectangular top pipe construction risk.
Detailed description of the invention
It, below will be to attached drawing needed in embodiment description in order to illustrate more clearly of the utility model embodiment It is briefly described, it should be apparent that, the drawings in the following description are merely some embodiments of the present invention, for ability For the those of ordinary skill of domain, without creative efforts, it can also be obtained according to these attached drawings other attached Figure.
Fig. 1 is the overall structure diagram of the utility model.
Fig. 2 is the A-A cross-sectional view in Fig. 1.
Fig. 3 is the B-B cross-sectional view in Fig. 1.
Fig. 4 is the C-C cross-sectional view in Fig. 1.
Fig. 5 is the D-D cross-sectional view in Fig. 1.
Fig. 6 is the cross-sectional view F-F cross-sectional view of Fig. 5.
Fig. 7 is the partial enlarged view in Fig. 1 at I.
Fig. 8 is the partial enlarged view in Fig. 1 at II.
Fig. 9 is the partial enlarged view in Fig. 1 at III.
Figure 10 is T-steel structural reinforcement member partial structure diagram.
Figure 11 is E-E cross-sectional view in Fig. 1.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are under that premise of not paying creative labor Every other embodiment obtained, fall within the protection scope of the utility model.
As shown in figs. 1-11, embodiment 1, a kind of rectangular top pipe reception sleeve arrangement, including portal flange 1 and counter-force branch Pre-buried steel loop 10 in support 7, portal flange 1 and portal welds, and reception sleeve is connected on portal flange 1, and receiving sleeve is Combination sealing sleeve.The reception sleeve includes sequentially connected sleeve front assembly 2, sleeve rear assembly 3 and sleeve end cap 4, one end of sleeve front assembly 2 is connected with portal flange 1, the other end and sleeve rear assembly 3 are tightly connected, sleeve end cap 4 are sealingly disposed in the rear portion of sleeve rear assembly 3, and composition has the tubular of end cap.One end of the counter-force support frame 7 and wall 11 Be fixedly connected, the other end is equipped with reaction frame 6, reaction frame is round rectangle frame, and is matched with sleeve end cap.Reaction frame 6 Front end is equipped with pretightning force supporting mechanism 5, and pretightning force supporting mechanism 5 is corresponding with sleeve end cap 4, and stepless action is in sleeve end cap On, and then the application to sleeve progress pretightning force is received.
Further, the pretightning force supporting mechanism 5 includes several jack 9 being uniformly arranged on reaction frame 6 and weldering Several stretching steel cylinders 501 on sleeve end cap 4 are connect, the outer end of stretching steel cylinder 501 is equipped with the coordinating block being obliquely installed 502, reaction frame 6 is equipped with wedge block support base 504, and wedge block support base 504 and coordinating block 502 correspond, i.e. coordinating block Bottom be just in contact with the upper surface of wedge block support base, play the role of support and positioning.Coordinating block 502 and reaction frame Wedge block 503 is equipped between 6 to pre-tighten sleeve end cap by wedging wedge block between coordinating block 502 and reaction frame 6 Clamp sleeve front assembly 2, sleeve rear assembly 3 and sleeve end cap 4 are played the role of in the application of power.The counter-force support frame 7 Including several brace steel posts 701 being arranged in a ring, one end of brace steel post 701 by connecting flange 702 and is embedded in wall Expansion bolt 703 in body 11 is connected, and plays the role of fixed brace steel post.The other end and reaction frame 6 of brace steel post 701 It is connected.The reaction frame 6 includes six piecemeals, and six piecemeals form rectangular frame.The reaction frame uses box-structure, instead Double-layer rib plate, the piecemeal shape being connected by screw bolts for the installation and transport convenient for reaction frame, reaction frame are arranged at power frame stress Formula, six, three kinds of piecemeals are symmetrical arranged.
A kind of rectangular top pipe construction method for receiving sleeve arrangement, includes the following steps: that (1) receives sleeve installation process:
1. entering portal flange, and it is fixed on pre-buried steel loop by spot welding, keeps the center of portal flange good with prior confirmation Portal center line be overlapped, it is ensured that the accurate connection of portal flange and pre-buried steel loop, prevent install it is not in place.
2. keeping portal flange contact facings smooth, end face seal glue is smeared on portal flange and installing sealing ring and positioning Pin shaft, installation sleeve front assembly, is fixed by bolts, then installation sleeve rear assembly;Ensure portal flange, sleeve front Component and sleeve rear assembly are tightly connected respectively, receive sleeve lining and the unilateral reserved 10 centimeters of gaps of push-bench outer wall;
3. sleeve front assembly and sleeve rear assembly are after the installation is completed, sleeve end cap is hung in, and smears end face seal glue And mounting O-shaped rings, socket end lid is fastened on sleeve rear assembly using bolt;
4. reaction frame, counter-force support frame, side diagonal brace are installed in place, according to scene positioning by pretightning force supporting mechanism The steel cylinder that holds out against be welded on socket end and cover, wedge block support base is welded in the corresponding position of reaction frame;
5. being evenly arranged jack between sleeve end cap and reaction frame, is applied using jack to portal flange and pre-tightened Power, it should be noted that checking whether reaction frame loosens in pre-compaction process, whether the bolt for receiving sleeve connection loosens, occur it is abnormal and When take measures;In the case where ensuring non-loosening, portal flange and pre-buried steel loop are fully welded;
6. after portal flange and its stiffener plate are welded, receiving sleeve with jack pair and portal flange applying preload Power installs wedge block between sleeve end cap and reaction frame, forms the support of portal pretightning force, carries out pretightning force by stretching steel cylinder Application, it is more firm;Then jack is withdrawn, jack can remove, and be used for other places, increase operation rate;
(2) rectangular top pipe is appeared process:
1. receiving sleeve carries out pressure maintaining experiment: the pressure-air of input 0.3Mpa into reception sleeve, pressure maintaining 12 hours, if The air pressure received in sleeve after 12 hours is less than 0.02Mpa, then meets the requirements, and otherwise searches leakaging cause and repairs in time It is multiple;
2. cutting portal, and dregs is removed by the discharging device of rectangular top pipe, after the completion of portal is cut, under sleeve Side pours mortar pedestal, is used to support the self weight after rectangular top pipe is appeared;
3. inserting the dregs that rectangular top pipe excavates out into sleeve by the charging interface on sleeve rear assembly, and pass through Water inlet union is filled the water into ferrule barrel, and sleeve inner pressure is made to be equal to the hydraulic pressure of same depth;
4. rectangular top pipe tunnels, when rectangular top pipe will appear, strict control misalignment of axe is answered, it is ensured that rectangular pipe jacking machine peace Enter portal circle entirely;
5. after rectangular top pipe is appeared, reinforcing portal device, and ensure the anhydrous outflow of portal, completing to rectangular top pipe into hole Afterwards, dregs mud is completely exhausted out by the slag notch connector of the discharging device of rectangular top pipe and sleeve rear assembly;
6. successively removing sleeve and its auxiliary equipment after mud in ferrule barrel is thoroughly discharged.
Embodiment 2, a kind of rectangular top pipe reception sleeve arrangement, the front end face and sleeve front group of the portal flange 1 Part 2 is bolted, and alignment pin 105 and O-shaped sealing are equipped between the front end face and sleeve front assembly 2 of portal flange 1 Circle 106, it is ensured that its leakproofness;The portal flange 1 includes upper half flange 101 and lower half flange 102, and upper half flange 101 is under Half flange 102 is connected by bolt seal, and upper half flange 101 and lower half flange 102 form round rectangle, with push-bench shape phase Cooperation;Gusset 107 is equipped on the outer ring surface of upper half flange 101 and lower half flange 102, gusset 107 is along the circumferential interior outside of portal Welding enhances portal rigidity of flange, and alignment pin 105 is located on the inside of cylinder, for sleeve front assembly 2 and portal flange 1 Bolt installation positioning (due to waist rail height limitation outside cabinet, operating space is insufficient), O-shaped sealing 106 are used for circumferential sealing, Keep pressure in closed barrel.
Further, the sleeve front assembly 2 includes upper ring 201 and lower ring 202, upper ring 201 and lower ring 202 It is connected by bolt seal, upper ring 201 and lower ring 202 form round rectangle, match with portal flange, upper ring 201 It is equipped with box-structure stiffening plate 203, lower ring 202 is equipped with T-steel structural reinforcing plate 204, ring on sleeve front assembly Using box-structure, circumferential direction plus stud, keeping reduces box height while cylinder strength (protrudes waist rail in the middle part of received well Limitation), for personnel, at the top of sleeve front assembly, space has been reserved in operation.Lower ring to and axial to be all made of T-steel hardened Structure is reinforced, and can be saved material, and facilitate being fastenedly connected for axial bolts.
Further, the sleeve rear assembly 3 includes upper member 305 and lower member 306, upper member 305 and lower member 306 It is connected by bolt seal, upper member 305 and lower member 306 form round rectangle, are all provided on upper member 305 and lower member 306 There is T-steel structural reinforcement member 307;Upper member 305 and 306 junction of lower member bilateral symmetry are equipped with side diagonal brace 8, are used for rectangle Cylinder is firm when push pipe is appeared.If the upper member 305 be equipped with charging connector 301, several pressure gauge components 303 and Dry water inlet union 304, charging connector 301 are used to fill earth pressure balance medium into cylinder and personnel are facilitated to pass in and out, Pressure gauge component 303 and water inlet union 304 are separately positioned on the two sides of charging connector 301;Circumferential direction installation pressure gauge group Part 303, for monitoring cylinder working condition internal pressure;Lower member 306 is equipped at least one slag notch connector 302 and several A water inlet union 304, slag notch connector 302 finish receiving rear slag dumping for push pipe;Water inlet union 304 is set in a ring It sets, for improveing receiving barrel in-vivo medium.
Further, the sleeve end cap 4 includes upper end cover 401 and lower cover 402, and upper end cover 401 and lower cover 402 pass through Bolt seal connection, joint face are arranged O-type seal, laterally simulate vault construction, enhance overall stiffness.Upper end cover 401 is under The front end face of the composition round rectangle of end cap 402, upper end cover 401 and lower cover 402 is equipped with sealing plate 403, and upper end cover 401 is under The rear end face of end cap 402 is equipped with arch stiffening plate 404, enhances its intensity.
Other structures are same as Example 1.
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this Within the spirit and principle of utility model, any modification, equivalent replacement, improvement and so on should be included in the utility model Protection scope within.

Claims (9)

1. a kind of rectangular top pipe reception sleeve arrangement, it is characterised in that: including portal flange (1) and counter-force support frame (7), hole Door flange (1) is connected with the pre-buried steel loop (10) in portal, and reception sleeve, the reception set are connected on portal flange (1) Cylinder includes sleeve front assembly (2), sleeve rear assembly (3) and sleeve end cap (4), one end and hole of sleeve front assembly (2) Door flange (1) is connected, the other end and sleeve rear assembly (3) are tightly connected, and sleeve end cap (4) is sealingly disposed in sleeve rear portion The rear portion of component (3);One end of the counter-force support frame (7) is connected with wall (11), the other end is equipped with reaction frame (6), instead The front end of power frame (6) is equipped with pretightning force supporting mechanism (5), and pretightning force supporting mechanism (5) is corresponding with sleeve end cap (4).
2. rectangular top pipe according to claim 1 reception sleeve arrangement, it is characterised in that: the pretightning force supporting mechanism It (5) include several jack (9) being uniformly arranged on reaction frame (6) and several supports being connected on sleeve end cap (4) Tight steel cylinder (501), the outer end of stretching steel cylinder (501) are equipped with the coordinating block (502) being obliquely installed, and reaction frame (6) is equipped with wedge Shape block support base (504), wedge block support base (504) and coordinating block (502) correspond, coordinating block (502) and reaction frame (6) Between be equipped with wedge block (503).
3. rectangular top pipe according to claim 1 or 2 reception sleeve arrangement, it is characterised in that: the counter-force support frame (7) include several brace steel posts (701) being arranged in a ring, one end of brace steel post (701) by connecting flange (702) with The expansion bolt (703) being embedded in wall (11) is connected, and the other end of brace steel post (701) is connected with reaction frame (6).
4. rectangular top pipe according to claim 3 is with receiving sleeve arrangement, it is characterised in that: the reaction frame (6) includes Six piecemeals, six piecemeals form rectangular frame.
5. rectangular top pipe according to claim 1 reception sleeve arrangement, it is characterised in that: the portal flange (1) Front end face is bolted with sleeve front assembly (2), between the front end face and sleeve front assembly (2) of portal flange (1) Equipped with alignment pin (105) and O-ring seal (106);The portal flange (1) includes upper half flange (101) and lower half flange (102), upper half flange (101) is connect with lower half flange (102) by bolt seal, upper half flange (101) and lower half flange (102) round rectangle is formed;Gusset (107) are equipped on upper half flange (101) and the outer ring surface of lower half flange (102).
6. rectangular top pipe according to claim 1 reception sleeve arrangement, it is characterised in that: the sleeve front assembly It (2) include upper ring (201) and lower ring (202), upper ring (201) is connected with lower ring (202) by bolt seal, upper ring Part (201) and lower ring (202) form round rectangle, and upper ring (201) is equipped with box-structure stiffening plate (203), lower ring (202) T-steel structural reinforcing plate (204) are equipped with.
7. rectangular top pipe according to claim 1 reception sleeve arrangement, it is characterised in that: the sleeve rear assembly It (3) include upper member (305) and lower member (306), upper member (305) is connected with lower member (306) by bolt seal, upper structure Part (305) and lower member (306) form round rectangle, are equipped with T-steel structure on upper member (305) and lower member (306) and add Strong part (307);Upper member (305) and lower member (306) junction bilateral symmetry are equipped with side diagonal brace (8).
8. rectangular top pipe according to claim 7 reception sleeve arrangement, it is characterised in that: on the upper member (305) Equipped with charging connector (301), several pressure gauge components (303) and several water inlet unions (304), pressure gauge component (303) and water inlet union (304) is separately positioned on the two sides for feeding connector (301);Lower member (306) is equipped at least One slag notch connector (302) and several water inlet unions (304).
9. rectangular top pipe according to claim 1 reception sleeve arrangement, it is characterised in that: sleeve end cap (4) packet Upper end cover (401) and lower cover (402) are included, upper end cover (401) is connected with lower cover (402) by bolt seal, upper end cover (401) and lower cover (402) forms round rectangle, and the front end face of upper end cover (401) and lower cover (402) is equipped with sealing plate (403), the rear end face of upper end cover (401) and lower cover (402) is equipped with arch stiffening plate (404).
CN201821000426.7U 2018-06-27 2018-06-27 A kind of rectangular top pipe reception sleeve arrangement Active CN208441834U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201821000426.7U CN208441834U (en) 2018-06-27 2018-06-27 A kind of rectangular top pipe reception sleeve arrangement

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Application Number Priority Date Filing Date Title
CN201821000426.7U CN208441834U (en) 2018-06-27 2018-06-27 A kind of rectangular top pipe reception sleeve arrangement

Publications (1)

Publication Number Publication Date
CN208441834U true CN208441834U (en) 2019-01-29

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108625861A (en) * 2018-06-27 2018-10-09 中铁工程装备集团有限公司 A kind of rectangular top pipe reception sleeve arrangement and its construction method

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108625861A (en) * 2018-06-27 2018-10-09 中铁工程装备集团有限公司 A kind of rectangular top pipe reception sleeve arrangement and its construction method

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