CN104775834A - Tube segment transport trolley simultaneously adaptive to whole-ring tube segment transportation function and small-curve tunneling function - Google Patents
Tube segment transport trolley simultaneously adaptive to whole-ring tube segment transportation function and small-curve tunneling function Download PDFInfo
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- CN104775834A CN104775834A CN201510215613.1A CN201510215613A CN104775834A CN 104775834 A CN104775834 A CN 104775834A CN 201510215613 A CN201510215613 A CN 201510215613A CN 104775834 A CN104775834 A CN 104775834A
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/40—Devices or apparatus specially adapted for handling or placing units of linings or supporting units for tunnels or galleries
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- General Life Sciences & Earth Sciences (AREA)
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- Forklifts And Lifting Vehicles (AREA)
- Lining And Supports For Tunnels (AREA)
Abstract
The invention discloses a tube segment transport trolley simultaneously adaptive to a whole-ring tube segment transportation function and a small-curve tunneling function. The tube segment transport trolley comprises a connecting base and a trolley body, wherein the connecting base is connected with the trolley body through a lever pulley block and a guide chain; the trolley body further comprises at least two racks which are connected; rack supporting wheels are arranged on the head and tail lower parts of each rack, a slide bracket and a lifting bracket are arranged on the upper part of each rack; the lifting brackets are arranged in series, and the sliding brackets are connected in series; the sliding bracket at the foremost end extends out of the rack at the foremost end, and a supporting wheel is arranged on the lower part of the sliding bracket at the foremost end. The length of the tube segment transport trolley disclosed by the invention can be more than 20 meters according to the tube segment diameter, the tube segment segmentation and the whole equipment arrangement; the transportation efficiency is not affected when the tube segment transport trolley is used for synchronously transporting the whole-ring tube segments at a relatively long distance, and the trolley travelling function is not affected on the condition of meeting small-curve tunneling turning.
Description
Technical field
The invention belongs to tunneling shield construction field, relate generally to the section of jurisdiction conveying equipment coordinating duct piece assembling machine to use in a kind of tunnel excavating process, be specially a kind of section of jurisdiction Dumbwaiter that simultaneously can meet the conveying of domain section of jurisdiction and little curve shield driving function.
Background technology
Along with tunneling equipment is as more and more extensive in shield structure or TBM apply in underground tunnel project, engineering requires also more and more higher to the instrumentality of equipment use.Need supporting to there is convenient, interim fallback function fast afterwards in many construction of tunnel processes.So this shield structure or TBM main frame rear portion need connect chassis but not the rear supporting arrangement form directly connecting crane span structure is more conducive to complete machine structure arranges, conveniently can realize corollary equipment structure where necessary and retreat.Because this rear supporting arrangement form just requires that section of jurisdiction Dumbwaiter possesses the section of jurisdiction conveying function of longer distance.In addition domestic current tunnel requirements shield structure and TBM design minimum curve is 250mm, and state outer tunnel requires less to shield structure and TBM design minimum curve, reaches 150 meters.The existing supporting section of jurisdiction of shield structure does not possess Dumbwaiter and meets the functions such as long distance walking in tunnel, section of jurisdiction conveying and adaptation sharp radius curve driving simultaneously.
Summary of the invention
Technical problem to be solved by this invention is, for above-mentioned the deficiencies in the prior art, the section of jurisdiction Dumbwaiter of the conveying of a kind of simultaneous adaptation domain section of jurisdiction and little curve tunneling function is provided, this dolly can meet that longer distance domain section of jurisdiction is carried fast, little curve turning walking function, simultaneously walking resistance little, be convenient to safeguard in lifting, transport, tunnel.Overall structure is relatively simple, easy and simple to handle, economical and practical.
The technical scheme that the section of jurisdiction Dumbwaiter of simultaneous adaptation domain section of jurisdiction of the present invention conveying and little curve tunneling function adopts is as follows:
The section of jurisdiction Dumbwaiter of simultaneous adaptation domain section of jurisdiction of the present invention conveying and little curve tunneling function, comprise Connection Block and trolley body, Connection Block is connected with trolley body with guide chain by lever hoist, described trolley body comprises the frame that at least two joints are connected, be provided with frame support wheel in the head and the tail bottom often saving frame, be provided with a joint slipper bracket and a joint and hoist bracket often saving upper rack; Hoist the setting that to be arranged in series between bracket, and between slipper bracket, series winding connects and arranges, and the slipper bracket be positioned at foremost stretches out in the frame be positioned at foremost, and be provided with support wheel being positioned at slipper bracket bottom foremost; Frame upper surface is provided with guide rail, and slipper bracket bottom is provided with the steel wheel matched with guide rail, between central rack and slipper bracket, be provided with sliding oil cylinder, and sliding oil cylinder promotion slipper bracket moves forward along the guide rail of frame upper surface; The bracket that hoists is arranged on outside slipper bracket, and in frame with hoist between bracket and be provided with lift oil tank, the lift oil tank jack-up bracket that hoists moves up.Dumbwaiter provides tractive force by Connection Block in shield tunneling process, frame is placed on by frame support wheel lays on second section of jurisdiction of having spliced, in dolly movement forward, trolley body is synchronously moved forward on the second section of jurisdiction by the frame support wheel that connects with frame, and drags dolly little moved further forward where necessary temporarily.By arranging support wheel in slipper bracket bottom foremost, driving when sliding oil cylinder stretches out in the process of slipper bracket conveying the 3rd section of jurisdiction and playing a supportive role.
As preferred version of the present invention, quantity at least two group of described lift oil tank, be distributed on frame and hoist between bracket, the quantity of sliding oil cylinder at least one group, be arranged between slipper bracket and frame, the control mode of lift oil tank is for synchronously stretching out or regaining, and the control mode of sliding oil cylinder is for synchronously stretching out or regaining.Drive slipper bracket to move forward when the expansion link of sliding oil cylinder stretches out, thus to needing the 3rd section of jurisdiction of conveying to be fed forward, drive the bracket that hoists to move up when the expansion link of lift oil tank stretches out, thus jack-up needs the 3rd section of jurisdiction of conveying.
As preferred version of the present invention, connected by the second swivel pin between described adjacent two joint frames, connected by the first swivel pin between adjacent two joint slipper brackets.Owing to being connected by the second swivel pin between adjacent two joint frames, connected by the first swivel pin between adjacent two joint slipper brackets, when trolley body is in turning process, the frame connected by more piece puts certain angle by the second swivel pin, the slipper bracket that merogenesis connects, by the first swivel pin pendulum certain angle, meets cornering ability in little driving curve procedures.Coordinate the steel wheel being positioned at slipper bracket bottom along slide, because guide rail is also for splicing is arranged, dolly, in sliding process, is positioned at same group of steel wheel of slipper bracket bottom, and different guide rail rolls, thus ensure that the slip of dolly is steady.
As preferred version of the present invention, be provided with piston shoes for subsequent use often saving frame lower.Piston shoes for subsequent use can continue frames work after the inefficacy of stent support wheel.
As preferred version of the present invention, slipper bracket is provided with pallet.Pallet is used for binding interim in k block process placement in Dumbwaiter conveying, and during transport, the k block that will bind is positioned on pallet with other section of jurisdiction synchronous transport.
As preferred version of the present invention, be respectively arranged with the first stopping means and the second stopping means in slipper bracket both sides.
As preferred version of the present invention, described steel wheel and frame support wheel centralized lubrication, the position of centralized lubrication is positioned at the most front or last position of trolley body.
The section of jurisdiction Dumbwaiter of simultaneous adaptation domain section of jurisdiction of the present invention conveying and little curve tunneling function, is characterized in that course of conveying is:
A, Dumbwaiter is placed on second section of jurisdiction of connecting and laying;
B, the 3rd section of jurisdiction hung by segment crane and delivers to slipper bracket latter end;
C, sliding oil cylinder promote slipper bracket and the 3rd section of jurisdiction moves forward an oil cylinder stroke;
D, lift oil tank jack-up hoist bracket and the 3rd section of jurisdiction, and now the 3rd section of jurisdiction departs from slipper bracket; Sliding oil cylinder drives slipper bracket to regain an oil cylinder stroke;
E, lift oil tank are regained, and the 3rd section of jurisdiction drops down onto on slipper bracket, and a now conveying action completes, and the 3rd section of jurisdiction moves forward an oil cylinder stroke, and then oil cylinder enters next conveying action;
F, repetition above-mentioned steps, the position that the 3rd section of jurisdiction brought successively is delivered to the first section of jurisdiction is hung by segment crane in rear by lift oil tank and the continuous action of sliding oil cylinder, and segment assembly after being captured by the duct piece assembling machine being positioned at Dumbwaiter front.
In sum, the advantage of the section of jurisdiction Dumbwaiter of simultaneous adaptation domain section of jurisdiction of the present invention conveying and little curve tunneling function is, the length of dolly is arranged according to section of jurisdiction diameter, section of jurisdiction piecemeal and whole set equipment and can be reached more than 20 meters; Section of jurisdiction Dumbwaiter, under the function possessing longer distance domain section of jurisdiction synchronous transport, does not affect transfer efficiency again; Carriage walking function is not affected again when meeting little curve (minimum tunnel radius is less than 150) tunnel piercing and turning.Also have functions such as being convenient in lifting, transport and hole maintenances concurrently simultaneously, walking resistance is little, be convenient to lifting, transport, the interior maintenance of tunnel.Overall structure is relatively simple, easy and simple to handle, economical and practical.
Accompanying drawing explanation
Fig. 1 is the travel position figure of the section of jurisdiction Dumbwaiter of simultaneous adaptation domain section of jurisdiction of the present invention conveying and little curve tunneling function.
Fig. 2 is the elevation of the section of jurisdiction Dumbwaiter of simultaneous adaptation domain section of jurisdiction of the present invention conveying and little curve tunneling function.
Fig. 3 is the A direction view of Fig. 1 of the section of jurisdiction Dumbwaiter of simultaneous adaptation domain section of jurisdiction of the present invention conveying and little curve tunneling function.
Fig. 4 is the A-A face sectional view of Fig. 2 of the section of jurisdiction Dumbwaiter of simultaneous adaptation domain section of jurisdiction of the present invention conveying and little curve tunneling function.
Fig. 5 is the turning simulation schematic diagram of the section of jurisdiction Dumbwaiter of simultaneous adaptation domain section of jurisdiction of the present invention conveying and little curve tunneling function.
Fig. 6 is the partial enlarged drawing of Fig. 5 of the section of jurisdiction Dumbwaiter of simultaneous adaptation domain section of jurisdiction of the present invention conveying and little curve tunneling function.
Detailed description of the invention
As shown in Figures 1 to 6, the section of jurisdiction Dumbwaiter of simultaneous adaptation domain section of jurisdiction of the present invention conveying and little curve tunneling function, comprise Connection Block 1 and trolley body, Connection Block 1 is connected with trolley body with guide chain 3 by lever hoist 2, and Dumbwaiter provides tractive force by Connection Block 1 in shield tunneling process.Described trolley body comprises the frame 6 that at least two joints are connected, and is provided with frame support wheel 10 in the head and the tail bottom often saving frame 6, is provided with piston shoes for subsequent use often saving frame 6 bottom.Frame 6 is placed on by frame support wheel 10 lays on second section of jurisdiction 12 of having spliced, in dolly movement forward, trolley body is synchronously moved forward on the second section of jurisdiction 12 of lining cutting by the frame support wheel 10 that connects with frame, and drags dolly little moved further forward where necessary temporarily.Piston shoes for subsequent use can continue frames work after the inefficacy of stent support wheel.
Be provided with a joint slipper bracket 7 and a joint and hoist bracket 8 often saving frame 6 top.
Between slipper bracket 7, series winding connects setting, and the slipper bracket 7 be positioned at foremost stretches out in the frame 6 be positioned at foremost, and slipper bracket 7 bottom be positioned at foremost is provided with support wheel 4.Frame 6 upper surface is provided with guide rail 19, slipper bracket 7 bottom is provided with the steel wheel 18 matched with guide rail, in the middle part of frame 6 and between slipper bracket, be provided with sliding oil cylinder 14, sliding oil cylinder 14 promotes slipper bracket 7 and moves forward along the guide rail 19 of frame 6 upper surface.By arranging support wheel 4 in slipper bracket bottom foremost, driving when sliding oil cylinder 14 stretches out slipper bracket 7 to carry in the process of the 3rd section of jurisdiction 13 and playing a supportive role.Described steel wheel 18 and frame support wheel 10 centralized lubrication, the position of centralized lubrication is positioned at the most front or last position of trolley body.The quantity at least one group of described sliding oil cylinder 14, is arranged between slipper bracket 7 and frame 6, and the control mode of sliding oil cylinder 14 is for synchronously stretching out or regaining.Slipper bracket 7 is driven to move forward when the expansion link of sliding oil cylinder 14 stretches out, thus to needing the 3rd section of jurisdiction 13 of conveying to be fed forward.Be respectively arranged with in slipper bracket 7 both sides for the first spacing stopping means 16 and the second stopping means 17.
Slipper bracket 7 is provided with pallet 20.Section of jurisdiction Dumbwaiter can carry polylith section of jurisdiction simultaneously, is generally a ring.At dolly slipper bracket 7 top placement tray 20, need carry by pallet 20 the K block that binds in K block process is bound in conveying.
Hoist the setting that to be arranged in series between bracket 8, and the bracket 8 that hoists is arranged on outside slipper bracket 7, and in frame 6 with hoist between bracket 8 and be provided with lift oil tank 15, the lift oil tank 15 jack-up bracket 8 that hoists moves up.Dumbwaiter completes the synchronous transport to the 3rd section of jurisdiction 13 by lift oil tank 15 and sliding oil cylinder 14.Quantity at least two group of described lift oil tank 15, be distributed on frame 6 and hoist between bracket 8, the control mode of lift oil tank 15, for synchronously stretching out or regaining, drive the bracket 8 that hoists to move up, thus jack-up needs the 3rd section of jurisdiction 13 of conveying when the expansion link of lift oil tank 15 stretches out.
Connected by the second swivel pin 11 between adjacent two joint frames 6, connected by the first swivel pin 9 between adjacent two joint slipper brackets 7.When trolley body is in turning process, the frame 6 connected by more piece puts certain angle by the second swivel pin 11, and the slipper bracket 7 that merogenesis connects puts certain angle by the first swivel pin 9, meets cornering ability in little driving curve procedures.The steel wheel 18 being positioned at slipper bracket 7 bottom is coordinated to slide along guide rail 19, because guide rail 19 between each section is also for splicing is arranged, dolly, in sliding process, is positioned at same group of steel wheel 18 of slipper bracket 7 bottom, different guide rail 19 rolls, thus ensure that the slip of dolly is steady.
The course of conveying of the section of jurisdiction Dumbwaiter of simultaneous adaptation domain section of jurisdiction of the present invention conveying and little curve tunneling function is:
A, Dumbwaiter is placed on second section of jurisdiction 12 of connecting and laying;
B, the 3rd section of jurisdiction 13 hung by segment crane and delivers to slipper bracket 7 latter end;
C, sliding oil cylinder 14 promote slipper bracket 7 and the 3rd section of jurisdiction 13 moves forward an oil cylinder stroke;
D, lift oil tank 15 jack-up hoist bracket 8 and the 3rd section of jurisdiction 13, and now the 3rd section of jurisdiction 13 departs from slipper bracket 7; Sliding oil cylinder 14 drives slipper bracket 7 to regain an oil cylinder stroke;
E, lift oil tank 15 are regained, and the 3rd section of jurisdiction 13 drops down onto on slipper bracket 7, and a now conveying action completes, and the 3rd section of jurisdiction 13 moves forward an oil cylinder stroke, and then oil cylinder enters next conveying action;
f, repetition above-mentioned steps, the position that the 3rd section of jurisdiction 13 brought successively is delivered to the first section of jurisdiction 5 is hung by segment crane in rear by lift oil tank 15 and sliding oil cylinder 14 constantly action, and segment assembly after being captured by the duct piece assembling machine being positioned at Dumbwaiter front.(need interim placement tray 20 when K block is bound in conveying, the K block that will bind is positioned on pallet 20 with other section of jurisdiction synchronous transport).
Below by reference to the accompanying drawings the preferred embodiment of the present invention is elaborated, but the present invention is not limited to above-mentioned embodiment, in the ken that art technician possesses, various change can also be made under the prerequisite not departing from present inventive concept.
Claims (8)
1. the section of jurisdiction Dumbwaiter of a simultaneous adaptation domain section of jurisdiction conveying and little curve tunneling function, comprise Connection Block (1) and trolley body, Connection Block (1) is connected with trolley body with guide chain (3) by lever hoist (2), it is characterized in that: described trolley body comprises the frame (6) that at least two joints are connected, be provided with frame support wheel (10) in the head and the tail bottom often saving frame (6), be provided with a joint slipper bracket (7) and a joint hoists bracket (8) often saving frame (6) top; Hoist the setting that to be arranged in series between bracket (8), between slipper bracket (7), series winding connects setting, the slipper bracket (7) be positioned at foremost stretches out in the frame (6) be positioned at foremost, and is provided with support wheel (4) being positioned at slipper bracket foremost (7) bottom; Frame (6) upper surface is provided with guide rail (19), slipper bracket (7) bottom is provided with the steel wheel (18) matched with guide rail, between frame (6) middle part and slipper bracket (7), be provided with sliding oil cylinder (14), sliding oil cylinder (14) promotion slipper bracket (7) moves forward along the guide rail (19) of frame upper surface; The bracket (8) that hoists is arranged on slipper bracket (7) outside, is provided with lift oil tank (15) between frame (6) and the bracket that hoists (8), and lift oil tank (15) the jack-up bracket (8) that hoists moves up.
2. the section of jurisdiction Dumbwaiter of simultaneous adaptation domain section of jurisdiction according to claim 1 conveying and little curve tunneling function, it is characterized in that: quantity at least two group of described lift oil tank (15), be distributed between frame (6) and the bracket that hoists (8), the quantity at least one group of sliding oil cylinder (14), be arranged between slipper bracket (7) and frame (6), the control mode of lift oil tank (15) is for synchronously stretching out or regaining, and the control mode of sliding oil cylinder (14) is for synchronously stretching out or regaining.
3. the section of jurisdiction Dumbwaiter of simultaneous adaptation domain section of jurisdiction according to claim 1 conveying and little curve tunneling function, it is characterized in that: connected by the second swivel pin (11) between described adjacent two joints frame (6), connected by the first swivel pin (9) between adjacent two joints slipper bracket (7).
4. the section of jurisdiction Dumbwaiter of simultaneous adaptation domain section of jurisdiction according to claim 1 conveying and little curve tunneling function, is characterized in that: be provided with piston shoes for subsequent use often saving frame (6) bottom, piston shoes for subsequent use are positioned at the position at middle part below frame.
5. the section of jurisdiction Dumbwaiter of simultaneous adaptation domain section of jurisdiction according to claim 1 conveying and little curve tunneling function, is characterized in that: on slipper bracket (7), be provided with pallet (20).
6. the section of jurisdiction Dumbwaiter of simultaneous adaptation domain section of jurisdiction according to claim 1 conveying and little curve tunneling function, is characterized in that: be respectively arranged with the first stopping means (16) and the second stopping means (17) in slipper bracket (7) both sides.
7. the section of jurisdiction Dumbwaiter of simultaneous adaptation domain section of jurisdiction according to claim 1 conveying and little curve tunneling function, it is characterized in that: described steel wheel (18) and frame support wheel (10) centralized lubrication, the position of centralized lubrication is positioned at the most front or last position of trolley body.
8. the section of jurisdiction Dumbwaiter of simultaneous adaptation domain section of jurisdiction according to claim 1 conveying and little curve tunneling function, is characterized in that course of conveying is:
A, Dumbwaiter is placed on second section of jurisdiction (12) of connecting and laying;
B, the 3rd section of jurisdiction (13) hung by segment crane and delivers to slipper bracket (7) latter end;
C, sliding oil cylinder (14) promote slipper bracket (7) and the 3rd section of jurisdiction (13) moves forward an oil cylinder stroke;
D, lift oil tank (15) jack-up hoist bracket (8) and the 3rd section of jurisdiction (13), and now the 3rd section of jurisdiction (13) departs from slipper bracket (7); Sliding oil cylinder (14) drives slipper bracket (7) to regain an oil cylinder stroke;
E, lift oil tank (15) are regained, and the 3rd section of jurisdiction (13) drops down onto on slipper bracket (7), and a now conveying action completes, and the 3rd section of jurisdiction (13) moves forward an oil cylinder stroke, and then oil cylinder enters next conveying action;
F, repetition above-mentioned steps, the position that the 3rd section of jurisdiction (13) brought successively is delivered to the first section of jurisdiction (5) is hung by segment crane in rear by lift oil tank (15) and sliding oil cylinder (14) constantly action, and segment assembly after being captured by the duct piece assembling machine being positioned at Dumbwaiter front.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510215613.1A CN104775834B (en) | 2015-04-30 | 2015-04-30 | The section of jurisdiction transport trolley of the conveying of domain section of jurisdiction and little curve tunneling function is adapted to simultaneously |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510215613.1A CN104775834B (en) | 2015-04-30 | 2015-04-30 | The section of jurisdiction transport trolley of the conveying of domain section of jurisdiction and little curve tunneling function is adapted to simultaneously |
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| Publication Number | Publication Date |
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| CN104775834A true CN104775834A (en) | 2015-07-15 |
| CN104775834B CN104775834B (en) | 2017-03-29 |
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| CN201510215613.1A Active CN104775834B (en) | 2015-04-30 | 2015-04-30 | The section of jurisdiction transport trolley of the conveying of domain section of jurisdiction and little curve tunneling function is adapted to simultaneously |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108019230A (en) * | 2017-12-28 | 2018-05-11 | 辽宁三三工业有限公司 | A kind of shield machine segment fast transportation platform |
| CN108382800A (en) * | 2018-03-22 | 2018-08-10 | 辽宁三三工业有限公司 | One kind feeding piece machine walking dolly running gear |
| CN108891882A (en) * | 2018-08-22 | 2018-11-27 | 西安中铁工程装备有限公司 | A kind of step-by-step movement section of jurisdiction translation delivery system and its Transfer method |
| CN109057834A (en) * | 2018-09-07 | 2018-12-21 | 西安中铁工程装备有限公司 | A kind of novel shield machine section of jurisdiction travelling bogie and its transportation resources |
| CN109098737A (en) * | 2018-08-12 | 2018-12-28 | 周莉 | A kind of duct piece conveyor vehicle |
| US20210231015A1 (en) * | 2021-03-18 | 2021-07-29 | Ccteb Infrastructure Construction Investment Co., Ltd. | Rapid construction method for secondary lining of small-section tunnel |
| CN113187523A (en) * | 2021-06-11 | 2021-07-30 | 中铁工程装备集团有限公司 | Long-distance heavy-load duct piece conveying device and conveying method |
| CN113338945A (en) * | 2021-07-16 | 2021-09-03 | 中铁工程装备集团有限公司 | Segment storage and transportation device, vertical shaft heading machine and segment storage and transportation method |
| CN113818909A (en) * | 2021-09-23 | 2021-12-21 | 辽宁三三工业有限公司 | Chain type shield machine feeding device |
| CN108412524B (en) * | 2018-03-22 | 2024-03-19 | 辽宁三三工业有限公司 | Quick uninstallation feeds piece device |
| CN108019230B (en) * | 2017-12-28 | 2024-04-26 | 辽宁三三工业有限公司 | Quick transportation platform of shield constructs quick-witted section of jurisdiction |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108412524B (en) * | 2018-03-22 | 2024-03-19 | 辽宁三三工业有限公司 | Quick uninstallation feeds piece device |
| CN109098737A (en) * | 2018-08-12 | 2018-12-28 | 周莉 | A kind of duct piece conveyor vehicle |
| CN108891882A (en) * | 2018-08-22 | 2018-11-27 | 西安中铁工程装备有限公司 | A kind of step-by-step movement section of jurisdiction translation delivery system and its Transfer method |
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| US11480054B2 (en) * | 2021-03-18 | 2022-10-25 | Ccteb Infrastructure Construction Investment Co., Ltd. | Rapid construction method for secondary lining of small-section tunnel |
| US20210231015A1 (en) * | 2021-03-18 | 2021-07-29 | Ccteb Infrastructure Construction Investment Co., Ltd. | Rapid construction method for secondary lining of small-section tunnel |
| CN113187523A (en) * | 2021-06-11 | 2021-07-30 | 中铁工程装备集团有限公司 | Long-distance heavy-load duct piece conveying device and conveying method |
| CN113187523B (en) * | 2021-06-11 | 2022-04-05 | 中铁工程装备集团有限公司 | Long-distance heavy-load duct piece conveying device and conveying method |
| CN113338945A (en) * | 2021-07-16 | 2021-09-03 | 中铁工程装备集团有限公司 | Segment storage and transportation device, vertical shaft heading machine and segment storage and transportation method |
| CN113818909A (en) * | 2021-09-23 | 2021-12-21 | 辽宁三三工业有限公司 | Chain type shield machine feeding device |
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