CN109577996A - Push-bench and trenchless prop pipelining method - Google Patents
Push-bench and trenchless prop pipelining method Download PDFInfo
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- CN109577996A CN109577996A CN201910007491.5A CN201910007491A CN109577996A CN 109577996 A CN109577996 A CN 109577996A CN 201910007491 A CN201910007491 A CN 201910007491A CN 109577996 A CN109577996 A CN 109577996A
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- bar
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- 238000000034 method Methods 0.000 title claims abstract description 13
- 239000002689 soil Substances 0.000 claims description 18
- 241001270131 Agaricus moelleri Species 0.000 claims description 13
- 238000003780 insertion Methods 0.000 claims description 6
- 230000037431 insertion Effects 0.000 claims description 6
- 238000005266 casting Methods 0.000 claims description 4
- 238000009434 installation Methods 0.000 claims description 3
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 238000010276 construction Methods 0.000 abstract description 6
- 229910000831 Steel Inorganic materials 0.000 description 7
- 239000010959 steel Substances 0.000 description 7
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000009412 basement excavation Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 238000013475 authorization Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/005—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries by forcing prefabricated elements through the ground, e.g. by pushing lining from an access pit
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Earth Drilling (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
Abstract
The present invention relates to the technical fields of jacking construction, more particularly, to a kind of push-bench and trenchless prop pipelining method.A kind of push-bench its advantage lies in being able to be accurately positioned push pipe.A kind of push-bench, including including rack, the oil cylinder being installed in rack, the positioning device for being driven the draw back plate of movement by oil cylinder and being installed on draw back plate, the positioning device includes the positioning disk being integrally formed on draw back plate, the centralized positioning protrusion on front side of the positioning disk.Cooperate positioning by the equal positioning groove of the diameter being arranged in centralized positioning protrusion and thin footpath bar, central diameter bar, so that position is accurate when push, is not easy to deviate.
Description
Technical field
The present invention relates to the technical fields of jacking construction, more particularly, to a kind of push-bench and trenchless prop pipelining side
Method.
Background technique
Pipe-jacking technology is a kind of non-excavation type construction of underground tunnel technology.During jacking construction, to tunnel axis
It controls extremely important, is related to the success or failure of jacking construction.
Existing Authorization Notice No. is that the utility model patent of CN2775437Y discloses a kind of underground hydraulic push bench, should
Push-bench drives draw back plate movement by double action oil cylinders of lifting one's head, and draw back plate drives mandril abutting to push away during draw back plate moves
Dynamic push pipe.
Above-mentioned prior art, which has the following deficiencies:, to carry out effective position to push pipe, when the position of push pipe is inclined
When shifting, the position in push pipe insertion soil layer will also shift, it is difficult to reach original expected design effect.
Summary of the invention
One of purpose of the invention is to provide a kind of push-bench, its advantage lies in being able to be accurately positioned push pipe.
Foregoing invention purpose of the invention has the technical scheme that a kind of push-bench, including including
Rack, the oil cylinder being installed in rack, the positioning device for being driven the draw back plate of movement by oil cylinder and being installed on draw back plate,
The positioning device includes the positioning disk being integrally formed on draw back plate, the centralized positioning protrusion on front side of the positioning disk.
It is equal by the diameter being arranged in centralized positioning protrusion and thin footpath bar, central diameter bar by using above-mentioned technical proposal
Positioning groove cooperate positioning so that push when position it is accurate, be not easy to deviate.
The present invention is further arranged to: the centralized positioning protrusion is cylinder, and around centralized positioning raised end
One circle is rounded down.
By using above-mentioned technical proposal, fillet is set in centralized positioning protrusion to be conveniently inserted into thin footpath bar and central diameter
In the corresponding positioning groove of bar.
The present invention is further arranged to: the positioning device further includes clamp system, and the clamp system includes being molded over
Cavity inside positioning disk and the turntable being rotationally connected in cavity, the axis of the shaft center line of turntable and centralized positioning protrusion
Line overlap forms flat thread on front side of turntable；Three or more pilot hole is provided on front side of positioning disk, in each pilot hole
Sliding is connected with sliding block, and the trailing flank of sliding block forms the latch with flat thread cooperation.
By using above-mentioned technical proposal, sliding block being set and is moved along pilot hole, sliding block is cooperated by latch and flat thread,
When turntable rotation, sliding block is moved along pilot hole to middle part or outward.When positioning thin footpath bar and central diameter bar, sliding block cooperation is resisted
The lateral surface of thin footpath bar or central diameter bar reinforces locating effect.When positioning large-diameter pipe, sliding block moves outward and is against large-diameter pipe
Inner sidewall on.
The present invention is further arranged to: the peripheral side of the turntable forms a circle helical teeth, rotates on the positioning disk
The worm screw being connected in one end insertion cavity, one end that the worm screw is pierced by positioning disk is connected with handwheel.
By using above-mentioned technical proposal, the helical teeth on the outside of worm screw and turntable is set and is cooperated, so that can be with when rotation handwheel
Turntable rotation is driven by worm screw.
The present invention is further arranged to: the sliding block shares eight, when eight slide block movements are to convex closest to centralized positioning
When the position risen, the side of adjacent sliders is abutted against, and the inner side edge of eight sliding blocks surrounds positive eight tangent with centralized positioning protrusion
Side shape.
By using above-mentioned technical proposal, the inner side edge of sliding block is cut into flat face so that sliding block can be with different-diameter
Thin footpath bar, central diameter bar cooperatively form bearing surface.
The present invention is further arranged to: when eight slide block movements are to closest to the position of centralized positioning protrusion, eight cunnings
An entire circle is surrounded on the outside of block.
By using above-mentioned technical proposal, the lateral surface of eight sliding blocks is cut to form the little arc surface of diameter, so that
Sliding block can abut when moving outward with the large-diameter pipe inner sidewall of different-diameter.
It is a further object to provide a kind of trenchless prop pipelining methods using above-mentioned push-bench.
Foregoing invention purpose of the invention has the technical scheme that a kind of using above-mentioned push-bench
Trenchless prop pipelining method, comprising:
Step 1: excavating active well and received well；
Step 2: casting concrete rear support wall；
Step 3: machine installation examination is adjusted；
Step 4: wearing pinnacle thin footpath bar；
Step 5: wearing flat-top thin footpath bar；
Step 6: wearing central diameter bar；
Step 7: wearing large-diameter pipe.
By using above-mentioned technical proposal, the lesser pinnacle thin footpath bar in section is first worn, since its section is smaller and end is sharp
It is sharp, therefore be relatively easy to be inserted directly into soil layer.Continue into soil layer by a section section flat-top thin footpath bar so that pinnacle thin footpath bar from
Active well insertion, received well ejection.Central diameter bar and large-diameter pipe are worn followed by, are not needed to excavate and are realized jacking construction.
The present invention is further arranged to: in step 4, rotation handwheel makes eight sliding blocks toward the direction sliding being away from each other, directly
When being greater than the diameter of pinnacle thin footpath bar to the spacing between opposing slider, pinnacle thin footpath bar is inserted into the position between eight sliding blocks
It sets；Pinnacle thin footpath bar is provided with positioning groove, the diameter and the diameter phase of centralized positioning protrusion of positioning groove far from the one end on pinnacle
Deng；After positioning groove and the positioning of centralized positioning male cooperation, rotates backward handwheel eight sliding blocks are moved toward one another and be against pinnacle
The lateral surface of thin footpath bar is by pinnacle thin footpath bar cramp tightening position；Oil cylinder push pinnacle thin footpath bar enters in soil layer.
By using above-mentioned technical proposal, by operation so that sliding block cooperates firm grip thin footpath bar, so as to subsequent insertion
The step of soil layer.
The present invention is further arranged to: in step 5, one end end of flat-top thin footpath bar is equally provided with diameter and center is fixed
The equal positioning groove of position projection diameter；After rotation handwheel slightly unclamps pinnacle thin footpath bar, oil cylinder resets；It is equal by diameter
The cooperation of the sliding block of centralized positioning protrusion and eight clearance fits is positioned；Flat-top thin footpath bar, which is pushed, by oil cylinder enters soil layer
It is interior.
By using above-mentioned technical proposal, after pinnacle thin footpath bar is inserted into soil layer, subsequent flat-top thin footpath bar no longer needs when being inserted into
Sliding block is wanted to be matched for clamping tightly each.The both ends of flat-top thin footpath bar are only needed to resist, sliding block and flat-top thin footpath bar clearance fit
It can also be accurately positioned.
The present invention is further arranged to:, will be another after end cap with holes is installed in one end of first large-diameter pipe in step 7
End rests in the outside of sliding block, by rotating handwheel sliding block is moved toward the direction being away from each other, so that eight sliding block cooperations are supported
Firmly the inner wall of large-diameter pipe positions large-diameter pipe；Large-diameter pipe is pushed by oil cylinder to enter in soil layer；Subsequent large-diameter pipe is withouyt with holes
End cap is directly entered in soil layer with the state push for keeping up with a major diameter end surfaces alignment；Until the end of first large-diameter pipe from
When received well stretches out, belt removal hole end cap.
By using above-mentioned technical proposal, sliding block is moved out to cooperate and resist large-diameter pipe.Add on first large-diameter pipe
End cap with holes is filled to resist central diameter bar, central diameter bar is squeezed out, simultaneously because with holes can reduce compressive plane, reduces and drives large-diameter pipe fortune
Driving force required for dynamic.
In conclusion advantageous effects of the invention are as follows:
1. by the equal positioning groove cooperation positioning of the diameter being arranged in centralized positioning protrusion and thin footpath bar, central diameter bar, so that
Position is accurate when push, is not easy to deviate；
2. setting sliding block is moved along pilot hole, sliding block is cooperated by latch and flat thread, and when turntable rotation, sliding block is along guiding
Hole is moved to middle part or outward, and sliding block is allowed to be matched for clamping tightly the pipe fitting of different-diameter.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of embodiment；
Fig. 2 is the structural schematic diagram of positioning device in embodiment；
Fig. 3 is the structural schematic diagram of embodiment indsole positioning device inside and sliding block.
Appended drawing reference: 1, rack；2, oil cylinder；3, draw back plate；4, positioning device；5, plate is abutted；6, support rod；7, thrust
Plate；8, clamp system；9, positioning disk；10, centralized positioning protrusion；11, cavity；12, turntable；13, flat thread；14, pilot hole；
15, sliding block；16, latch；17, helical teeth；18, worm screw；19, handwheel.
Specific embodiment
Below in conjunction with attached drawing, invention is further described in detail.
Embodiment one:
As shown in Figure 1, a kind of push-bench, drives pushing away for movement including rack 1, the oil cylinder being installed in rack 12, by oil cylinder 2
Pulling plate 3 and the positioning device 4 being installed on draw back plate 3.
As shown in Figure 1, rack 1 includes abutting plate 5, being connected to two support rods 6 for abutting 5 front side of plate and two supports
The upside of 6 front end of bar is respectively connected with one piece of thrust plate 7, and two support rods 6, which are connected to, abuts the position that plate 5 leans on the right and left
It sets.The cylinder body of two oil cylinders 2 is connected to thrust plate 7 towards the side for abutting plate 5, and the piston rod of two oil cylinders 2 vertically supports
Fishplate bar 5 and draw back plate 3 is fixedly connected in the end of piston rod.Draw back plate 3 is driven to move back and forth by oil cylinder 2, draw back plate 3 is reciprocal
The process of movement drives the positioning device 4 being located on draw back plate 3 to move together.
As depicted in figs. 1 and 2, positioning device 4 includes the positioning disk 9 of clamp system 8 and integrated molding on draw back plate 3,
The front side of positioning disk 9 forms centralized positioning protrusion 10, and centralized positioning protrusion 10 is cylindrical, and raised 10 ends of centralized positioning
Make a circle in week and be rounded down.
As shown in Figures 2 and 3, clamp system 8 includes being molded over the cavity 11 inside positioning disk 9 and being rotationally connected with sky
Turntable 12 in chamber 11, the axis overlapping of the shaft center line and centralized positioning protrusion 10 of turntable 12, the front side molding of turntable 12
There is flat thread 13.The front side of positioning disk 9 is provided with eight pilot holes 14 being connected with cavity 11, and eight pilot holes 14 are at center
It makes a circle in the week of positioning protrusion 10 upper uniformly distributed, and to fixed away from center since with the raised 10 axis equidistant positions of centralized positioning
The direction of position protrusion 10 extends isometric distance.
As shown in Figures 2 and 3, sliding is connected with sliding block 15 in each pilot hole 14, the middle part width of sliding block 15 and leads
Width to hole 14 is equal, and the width of 15 rear and front end of sliding block is all larger than the width at middle part.The trailing flank of sliding block 15 forms
The latch 16 cooperated with flat thread 13, by the cooperation of latch 16 and flat thread 13 so that eight sliding blocks when turntable 12 rotates
15 move along the synchronization of pilot hole 14 to the direction close to or far from centralized positioning protrusion 10.When eight sliding blocks 15 move to it is closest
When the position of centralized positioning protrusion 10, the side of adjacent sliders 15 is abutted against, and the inner side edge of eight sliding blocks 15 surrounds fixed with center
The raised 10 tangent octagons in position, the outside of eight sliding blocks 15 surround an entire circle.The peripheral side of turntable 12 forms one
Helical teeth 17 is enclosed, insertion positioning disk 9 is interior and is meshed with the worm screw 18 of the rotation connection of positioning disk 9 and helical teeth 17.Worm screw 18 is pierced by fixed
One end of position disk 9 is connected with handwheel 19, drives worm screw 18 to rotate by rotation handwheel 19.
Embodiment two:
A kind of trenchless prop pipelining method, comprising:
Step 1: excavating active well and received well；
Excavation active well and received well, 5 meters of Round Concrete wells of active well and received well diameter dimension diameter, 16 meters of depth.
Step 2: casting concrete rear support wall；
The steel mesh for building two layers of bar spacing 150mm backwards to the side of received well in active well, between two layers of steel mesh
Place one block of steel plate in position.Two layers of steel mesh and steel plate are coated on internal formation rear support wall by casting concrete.Rear support wall
Front arrangement 10mm thickness flitch layer, be provided with steel plate on front side of flitch layer.
Step 3: machine installation examination is adjusted；
Push-bench is hung in active well, plate 5 is abutted and is abutted with the steel plate of rear support wall.
Step 4: wearing pinnacle thin footpath bar；
Rotation handwheel 19 makes eight sliding blocks 15 toward the direction sliding being away from each other, until the spacing between opposing slider 15 is greater than point
When pushing up the diameter of thin footpath bar, pinnacle thin footpath bar is inserted into the position between eight sliding blocks 15.Pinnacle thin footpath bar is far from pinnacle
One end is provided with positioning groove, and the diameter of positioning groove is equal with the diameter of centralized positioning protrusion 10.Positioning groove and centralized positioning
After 10 cooperation positioning of protrusion, rotates backward handwheel 19 and eight sliding blocks 15 is made to move toward one another the lateral surface general for being against pinnacle thin footpath bar
Pinnacle thin footpath bar cramp tightening position.
Pinnacle thin footpath bar is pushed by oil cylinder 2 after pinnacle thin footpath bar is fixed to enter in soil layer.
Step 5: wearing flat-top thin footpath bar；
One end end of flat-top thin footpath bar is equally provided with the diameter positioning groove equal with raised 10 diameters of centralized positioning.Rotate hand
After wheel 19 slightly unclamps pinnacle thin footpath bar, oil cylinder 2 resets.Pass through diameter equal centralized positioning protrusion 10 and eight clearance fits
Sliding block 15 cooperation positioned.Flat-top thin footpath bar is pushed by oil cylinder 2 to enter in soil layer.
Step 6: wearing central diameter bar；
One end end of central diameter bar is provided with the diameter positioning groove equal with raised 10 diameters of centralized positioning.Eight sliding blocks 15 are adjusted
Section is determined the position that central diameter bar is inserted between sliding block 15 and centralized positioning protrusion 10 to the state with central diameter bar clearance fit
Position.Central diameter bar is pushed by oil cylinder 2 to enter in soil layer.
Step 7: wearing large-diameter pipe；
After end cap with holes is installed in one end of first large-diameter pipe, the other end is rested in the outside of sliding block 15, by rotating hand
Wheel 19 makes sliding block 15 toward the direction movement being away from each other, so that eight sliding blocks 15 cooperate the inner wall for resisting large-diameter pipe to determine large-diameter pipe
Position.Large-diameter pipe is pushed by oil cylinder 2 to enter in soil layer.
Subsequent large-diameter pipe directly enters soil withouyt end cap with holes with the state push for keeping up with a major diameter end surfaces alignment
In layer.When the end of first large-diameter pipe is stretched out from received well, belt removal hole end cap.
The embodiment of present embodiment is presently preferred embodiments of the present invention, not limits protection of the invention according to this
Range, therefore: the equivalence changes that all structures under this invention, shape, principle are done, should all be covered by protection scope of the present invention it
It is interior.
Claims (10)
1. a kind of push-bench, including including rack (1), the oil cylinder (2) being installed on rack (1), by oil cylinder (2) driving movement
Draw back plate (3) and the positioning device (4) that is installed on draw back plate (3), it is characterized in that: the positioning device (4) includes one
The body formed positioning disk (9) on draw back plate (3), the centralized positioning on front side of the positioning disk (9) are raised (10).
2. push-bench according to claim 1, it is characterized in that: centralized positioning protrusion (10) is cylinder, and center
Making a circle in week for positioning protrusion (10) end is rounded down.
3. push-bench according to claim 1, it is characterized in that: the positioning device (4) further includes clamp system (8), institute
Stating clamp system (8) includes the turntable for being molded over the internal cavity (11) of positioning disk (9) and being rotationally connected in cavity (11)
(12), the shaft center line of turntable (12) and the axis of centralized positioning raised (10) are overlapped, and are formed on front side of turntable (12) flat
Face screw thread (13)；Three or more pilot hole (14), sliding connection in each pilot hole (14) are provided on front side of positioning disk (9)
Have sliding block (15), the trailing flank of sliding block (15) forms the latch (16) with flat thread (13) cooperation.
4. push-bench according to claim 3, it is characterized in that: the peripheral side of the turntable (12) forms a circle helical teeth
(17), the worm screw (18) being rotatably connected on the positioning disk (9) in one end insertion cavity (11), the worm screw (18) are pierced by fixed
One end of position disk (9) is connected with handwheel (19).
5. push-bench according to claim 3, it is characterized in that: the sliding block (15) shares eight, when eight sliding blocks (15)
When moving to closest to the position of centralized positioning raised (10), the side of adjacent sliders (15) is abutted against, eight sliding blocks (15)
Inner side edge surrounds the octagon tangent with centralized positioning raised (10).
6. push-bench according to claim 5, it is characterized in that: when eight sliding blocks (15) move to it is convex closest to centralized positioning
When playing the position of (10), an entire circle is surrounded on the outside of eight sliding blocks (15).
7. a kind of trenchless prop pipelining method using the described in any item push-bench of claim 1-5, characterized in that packet
It includes:
Step 1: excavating active well and received well；
Step 2: casting concrete rear support wall；
Step 3: machine installation examination is adjusted；
Step 4: wearing pinnacle thin footpath bar；
Step 5: wearing flat-top thin footpath bar；
Step 6: wearing central diameter bar；
Step 7: wearing large-diameter pipe.
8. trenchless prop pipelining method according to claim 7, it is characterized in that: rotation handwheel (19) makes in step 4
Eight sliding blocks (15) are obtained toward the direction sliding being away from each other, until the spacing between opposing slider (15) is greater than the straight of pinnacle thin footpath bar
When diameter, pinnacle thin footpath bar is inserted into the position between eight sliding blocks (15)；It is fixed that pinnacle thin footpath bar is provided with far from the one end on pinnacle
The diameter of position groove, positioning groove is equal with the raised diameter of (10) of centralized positioning；Positioning groove and centralized positioning are raised (10)
After cooperation positioning, rotate backward handwheel (19) make eight sliding blocks (15) move toward one another be against the lateral surface of pinnacle thin footpath bar will be sharp
Push up thin footpath bar cramp tightening position；Oil cylinder (2) push pinnacle thin footpath bar enters in soil layer.
9. trenchless prop pipelining method according to claim 8, it is characterized in that: in step 5, the one of flat-top thin footpath bar
End end is equally provided with the diameter positioning groove equal with raised (10) diameter of centralized positioning；It rotates handwheel (19) and slightly unclamps point
After pushing up thin footpath bar, oil cylinder (2) resets；Pass through the sliding block (15) of the equal centralized positioning of diameter raised (10) and eight clearance fits
Cooperation is positioned；Flat-top thin footpath bar is pushed by oil cylinder (2) to enter in soil layer.
10. trenchless prop pipelining method according to claim 9, it is characterized in that: in step 7, by first large-diameter pipe
One end end cap with holes is installed after, the other end is rested in the outside of sliding block (15), makes sliding block by rotating handwheel (19)
(15) toward the direction movement being away from each other, so that the inner wall that eight sliding block (15) cooperations resist large-diameter pipe positions large-diameter pipe；Pass through
Oil cylinder (2) push large-diameter pipe enters in soil layer；Subsequent large-diameter pipe is withouyt end cap with holes directly to keep up with a major diameter end surfaces
The state push of alignment enters in soil layer；When the end of first large-diameter pipe is stretched out from received well, belt removal hole end cap.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910007491.5A CN109577996B (en) | 2019-01-04 | 2019-01-04 | Pipe jacking machine and trenchless pipe jacking construction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910007491.5A CN109577996B (en) | 2019-01-04 | 2019-01-04 | Pipe jacking machine and trenchless pipe jacking construction method |
Publications (2)
| Publication Number | Publication Date |
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| CN109577996A true CN109577996A (en) | 2019-04-05 |
| CN109577996B CN109577996B (en) | 2020-10-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910007491.5A Active CN109577996B (en) | 2019-01-04 | 2019-01-04 | Pipe jacking machine and trenchless pipe jacking construction method |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110159836A (en) * | 2019-05-15 | 2019-08-23 | 安徽昊宇建设工程有限公司 | A kind of small-bore pipeline jacking construction method |
| CN110440052A (en) * | 2019-08-09 | 2019-11-12 | 简辽 | A kind of smooth lifting body of movable type for jacking construction |
| CN110529136A (en) * | 2019-08-23 | 2019-12-03 | 广东凯厦建设工程有限公司 | Municipal blow-off line pipe jacking construction method |
| CN111502682A (en) * | 2020-04-02 | 2020-08-07 | 中铁四局集团第三建设有限公司 | Trenchless pipe jacking construction device and construction method |
| CN114198565A (en) * | 2021-12-10 | 2022-03-18 | 中铁十六局集团电气化工程有限公司 | Pipe jacking device for subway construction |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110159836A (en) * | 2019-05-15 | 2019-08-23 | 安徽昊宇建设工程有限公司 | A kind of small-bore pipeline jacking construction method |
| CN110440052A (en) * | 2019-08-09 | 2019-11-12 | 简辽 | A kind of smooth lifting body of movable type for jacking construction |
| CN110440052B (en) * | 2019-08-09 | 2021-02-09 | 上海矩顶工程科技有限公司 | Movable smooth jacking mechanism for pipe jacking construction |
| CN110529136A (en) * | 2019-08-23 | 2019-12-03 | 广东凯厦建设工程有限公司 | Municipal blow-off line pipe jacking construction method |
| CN111502682A (en) * | 2020-04-02 | 2020-08-07 | 中铁四局集团第三建设有限公司 | Trenchless pipe jacking construction device and construction method |
| CN114198565A (en) * | 2021-12-10 | 2022-03-18 | 中铁十六局集团电气化工程有限公司 | Pipe jacking device for subway construction |
| CN114198565B (en) * | 2021-12-10 | 2023-10-24 | 中铁十六局集团电气化工程有限公司 | Push pipe device for subway construction |
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|---|---|
| CN109577996B (en) | 2020-10-30 |
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