CN104514200A - Rear auxiliary support device for novel large-tonnage bridging machine - Google Patents
Rear auxiliary support device for novel large-tonnage bridging machine Download PDFInfo
- Publication number
- CN104514200A CN104514200A CN201410807062.3A CN201410807062A CN104514200A CN 104514200 A CN104514200 A CN 104514200A CN 201410807062 A CN201410807062 A CN 201410807062A CN 104514200 A CN104514200 A CN 104514200A
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- Prior art keywords
- oil cylinder
- support oil
- column
- supporting leg
- outer support
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Classifications
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
- E01D21/06—Methods or apparatus specially adapted for erecting or assembling bridges by translational movement of the bridge or bridge sections
Abstract
The invention discloses a rear auxiliary support device for a novel large-tonnage bridging machine. The rear auxiliary support device includes an inner support leg and two outer support legs, wherein the inner support leg is supported at the middle part of a rear connection beam of a main beam of the bridging machine, and the two outer support legs are respectively supported on the left and right sides of the main beam of the bridging machine. The rear auxiliary support device for the novel large-tonnage bridging machine is compact and concise in whole structure, and definite din function, can complete all works of the outer support leg mechanism of the bridging machine, and achieve the most direct effect that the whole weight of the outer support leg mechanism is greatly reduced. The manufacture cost of the outer support leg mechanism is reduced. The requirement of the bridging machine on feeding beams can be met, and the requirement of the bridging machine on erecting the beams can also be met. The outer support legs also meet the beam surface requirement of the bridging machine with the maximum bearing capacity is ensured.
Description
Technical field
The invention belongs to technical field of bridge construction, be specifically related to a kind of rear auxiliary support apparatus of novel large-tonnage Bridge Erector.
Background technology
Along with China's science and technology and the development of infrastructure, especially in speedway and high-speed railway construction construction, various new technology, new equipment are widely used and promote, and improve speed of application and the quality of railway and highway.
During the erection of large-tonnage highway beam, rear support device props up and stands in bridge on the surface, and in order to get out of the way the transport channel of Beam transportation vehicle, erect-position will outside the wing plate of beam, when rear lifting mechanism hanging beam, rear support device will bear very large support force, how to reduce or distribute the strong point just one of difficult point becoming erecting beam construction of rear support device.Only solve these construction Difficulties, just can guarantee both quality and quantity to complete dosage construction task with safe.
Summary of the invention
The present invention is in order to solve weak point of the prior art, and provide a kind of rear auxiliary support apparatus of novel large-tonnage Bridge Erector, this bracing or strutting arrangement can ensure the beam transporting passage of Beam transportation vehicle, can ensure again not produce bridge surface when being subject to maximum load capacity to destroy.
For solving the problems of the technologies described above, the present invention adopts following technical scheme: the rear auxiliary support apparatus of novel large-tonnage Bridge Erector, comprise an interior supporting leg 2 and two outer supporting legs 1, interior supporting leg 2 is supported in the middle part of the rear connection beam 30 of crane ' s major girder 19, and two outer supporting legs 1 are supported on the left of crane ' s major girder 19 and right side respectively;
Outer supporting leg 1 comprises anchorage 3, outer column 4, hanging mechanism 5, traveling roller box 6, distribution beam 7, walking rails 8, supports anchor ear 9 and outer support oil cylinder 10, hanging mechanism 5 is symmetrical is provided with two, two hanging mechanisms 5 are located on the left of outer column 4 upper end and right side respectively, each hanging mechanism 5 is equipped with an anchorage 3, traveling roller box 6 is hinged on outer column 4 lower end, before and after bottom traveling roller box 6, side is equipped with travelling wheel 17, outer support oil cylinder 10 is located at outer column 4 lower end by bolt, outer support oil cylinder 10 vertically arranges and is positioned in the middle of walking roller box 6, outer support oil cylinder 10 lower end is fixedly connected with distribution beam 7, it is corresponding with travelling wheel about 17 in the middle of walking rails 8 is located at bottom distribution beam 7, distribution beam 7 bottom surface is lower than travelling wheel 17 lower edge, the support anchor ear 9 between distribution beam 7 top and outer column 4 lower end is arranged with outside outer support oil cylinder 10,
Interior supporting leg 2 comprises inner column 11, contact framework 12, movable sleeve 13, pylon 14, electric block 15 and inner support oil cylinder 16, inner column 11 is provided with two in left-right direction, movable sleeve 13 is provided with two, each movable sleeve 13 includes the upper flat plate 20 that is located at rear connection beam 30 upper surface and is located at lower dull and stereotyped 21 of rear connection beam 30 soffit, connected by stay-bolt 22 between upper flat plate 20 and lower dull and stereotyped 21, two inner column 11 upper ends are hinged on bottom lower dull and stereotyped 21 respectively by bearing pin 18, contact framework 12 level is located between two inner columns 11, pylon 14 is located on rear side of upper flat plate 20 and lower dull and stereotyped 21, electric block 15 is located on pylon 14, electric block 15 with in the middle part of inner column 11 between be connected by wire rope 23, inner support oil cylinder 16 is vertically located at inner column 11 lower end, inner support oil cylinder 16 lower end is provided with supporting disk 24.
Described hanging mechanism 5 comprises the installing rack 25 be located at outside outer column 4 upper end and the motor reducer 26 be located on installing rack 25, the clutch end of motor reducer 26 is connected with the hanging wheel 27 that can roll along the guide rail 28 of crane ' s major girder 19 bottom outside, anchorage 3 is located on installing rack, and anchorage 3 is provided with and the anchor bolt 29 be fixedly connected with outside crane ' s major girder 19.
With the middle part of crane ' s major girder 19 for boundary line, the outer support oil cylinder 10 in described left side and inner support oil cylinder 16 adopt the connected mode of series connection on high-pressure oil passage, and the outer support oil cylinder 10 on right side and inner support oil cylinder 16 adopt the connected mode of series connection on high-pressure oil passage.
The taper body structure that described outer column 4 is big up and small down.
Adopt technique scheme, combination above outer supporting leg of the present invention and between crane ' s major girder adopts convertible structure, after girder length is decided, also just be fixed up in the position of outer supporting leg, now anchorage and crane ' s major girder bolt are fixed, and the installing rack of anchorage and hanging mechanism is linked together, the installing rack of hanging mechanism is fixed on outside outer column, traveling roller box is hinged on outer column lower end, outer column is fixedly connected with outer support oil cylinder bolt bottom, outer support oil cylinder lower end is fixedly connected with distribution beam, walking rails is positioned at below distribution beam, outside support cylinder is arranged with by being positioned at the support anchor ear of distribution beam and outer column lower end to bear support force.Set a roof beam in place operation time, outer support cylinder jacking, now distribution beam compress walking rails, outer supporting leg is supported on bridge on the surface, add support anchor ear between support cylinder and distribution beam outside, when supporting leg is stressed outside, outer support oil cylinder does not stress, but by supporting anchor ear, power is delivered in distribution beam.During via hole operation, remove the support anchor ear between outer support oil cylinder and distribution beam, pack up outer support oil cylinder, now distribution beam departs from walking rails, and the travelling wheel contact walking rails on traveling roller box is also stressed, coordinates Bridge Erector via hole to move ahead.When needing the distance adjusting supporting leg in the present invention and Bridge Erector, only need unclamp the anchor bolt of anchorage, regain outer support oil cylinder, allow outer supporting leg be in the state of coming to nothing and make the hanging of the wheel of the hanging on hanging mechanism stressed on the guide rail of crane ' s major girder bottom outside, motor reducer drives hanging wheel to run before and after guide rail, drive outer supporting leg and interior supporting leg to move, so just can adjust the distance of the present invention and middle supporting leg.The taper body structure that outer column is big up and small down, like this while guarantee outer column intensity, fully can alleviate the weight of outer column, reduce cost of production.
Be fixed on the rear connection beam of crane ' s major girder by stay-bolt between the upper flat plate of the movable sleeve of interior supporting leg and lower flat board, the bottom of inner column and lower flat board is rotationally connected by bearing pin, two inner columns by bolt with contact framework two ends and be fixedly connected with, inner column lower end is provided with inner support oil cylinder.Pylon is arranged on side, movable sleeve rear, and pylon installs electric block.When Beam transportation vehicle enters before Bridge Erector, regain inner support oil cylinder, electric block holds inner column by wire rope, the bearing pin of inner column together with contact framework and inner support oil cylinder below movable sleeve rotates, dig rearwardly and upwardly, get out of the way the forward channel of Beam transportation vehicle, Beam transportation vehicle passes through forward by between two outer columns.
Outer supporting leg of the present invention and the support cylinder of interior supporting leg respectively in girder side are series connection on hydraulic circuit, this makes it possible to ensure that the inner support oil cylinder of Bridge Erector homonymy when hanging beam is consistent with the pressure of outer support oil cylinder.The dividing of support force of supporting leg and interior supporting leg mixes also according to certain pro rate outside simultaneously.
In sum, the present invention compared with prior art, has following beneficial effect:
1) compact overall structure of the present invention, succinct, definite functions, can complete the work that the outer support leg mechanism of Bridge Erector is all, its most direct effect is: the overall weight of outer support leg mechanism reduces greatly.Reduce the manufacturing cost of outer support leg mechanism.
2) outer supporting leg adopts and supports anchor ear, avoids Bridge Erector and is born by outer support oil cylinder at feeding beam and the power of setting a roof beam in place suffered by process China and foreign countries supporting leg, ensure that the application life of oil cylinder.
3) interior supporting leg adopts the mode of digging backward, namely can meet Bridge Erector feeding beam demand, can meet again the needs of setting a roof beam in place of Bridge Erector.
4) oil circuit of the support cylinder of outer supporting leg and interior supporting leg adopts and is connected in series, and can ensure that the pressure under any circumstance two support cylinders is equal.This makes it possible to ensure that outer supporting leg also meets the requirement of Bridge Erector to beam face when maximum load capacity.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is the enlarged drawing of Fig. 1 China and foreign countries supporting leg;
Fig. 3 is the right view of Fig. 2;
Fig. 4 is C-C sectional view in Fig. 3;
The enlarged drawing of supporting leg in Fig. 5 Fig. 1;
Fig. 6 is the left view of Fig. 5.
Detailed description of the invention
As shown in figs 1 to 6, auxiliary support apparatus after novel large-tonnage Bridge Erector of the present invention, comprise an interior supporting leg 2 and two outer supporting legs 1, interior supporting leg 2 is supported in the middle part of the rear connection beam 30 of crane ' s major girder 19, and two outer supporting legs 1 are supported on the left of crane ' s major girder 19 and right side respectively.
Outer supporting leg 1 comprises anchorage 3, outer column 4, hanging mechanism 5, traveling roller box 6, distribution beam 7, walking rails 8, supports anchor ear 9 and outer support oil cylinder 10, hanging mechanism 5 is symmetrical is provided with two, two hanging mechanisms 5 are located on the left of outer column 4 upper end and right side respectively, each hanging mechanism 5 is equipped with an anchorage 3, traveling roller box 6 is hinged on outer column 4 lower end, before and after bottom traveling roller box 6, side is equipped with travelling wheel 17, outer support oil cylinder 10 is located at outer column 4 lower end by bolt, outer support oil cylinder 10 vertically arranges and is positioned in the middle of walking roller box 6, outer support oil cylinder 10 lower end is fixedly connected with distribution beam 7, it is corresponding with travelling wheel about 17 in the middle of walking rails 8 is located at bottom distribution beam 7, distribution beam 7 bottom surface is lower than travelling wheel 17 lower edge, the support anchor ear 9 between distribution beam 7 top and outer column 4 lower end is arranged with outside outer support oil cylinder 10.
Interior supporting leg 2 comprises inner column 11, contact framework 12, movable sleeve 13, pylon 14, electric block 15 and inner support oil cylinder 16, inner column 11 is provided with two in left-right direction, movable sleeve 13 is provided with two, each movable sleeve 13 includes the upper flat plate 20 that is located at rear connection beam 30 upper surface and is located at lower dull and stereotyped 21 of rear connection beam 30 soffit, connected by stay-bolt 22 between upper flat plate 20 and lower dull and stereotyped 21, two inner column 11 upper ends are hinged on bottom lower dull and stereotyped 21 respectively by bearing pin 18, contact framework 12 level is located between two inner columns 11, pylon 14 is located on rear side of upper flat plate 20 and lower dull and stereotyped 21, electric block 15 is located on pylon 14, electric block 15 with in the middle part of inner column 11 between be connected by wire rope 23, inner support oil cylinder 16 is vertically located at inner column 11 lower end, inner support oil cylinder 16 lower end is provided with supporting disk 24.
Described hanging mechanism 5 comprises the installing rack 25 be located at outside outer column 4 upper end and the motor reducer 26 be located on installing rack 25, the clutch end of motor reducer 26 is connected with the hanging wheel 27 that can roll along the guide rail 28 of crane ' s major girder 19 bottom outside, anchorage 3 is located on installing rack, and anchorage 3 is provided with and the anchor bolt 29 be fixedly connected with outside crane ' s major girder 19.
With the middle part of crane ' s major girder 19 for boundary line, the outer support oil cylinder 10 in described left side and inner support oil cylinder 16 adopt the connected mode of series connection on high-pressure oil passage, and the outer support oil cylinder 10 on right side and inner support oil cylinder 16 adopt the connected mode of series connection on high-pressure oil passage.
The taper body structure that outer column 4 is big up and small down.
The combination of outer supporting leg 1 of the present invention above and between crane ' s major girder 19 adopts convertible structure, after girder 19 length is decided, also just be fixed up in the position of outer supporting leg 1, now anchorage 3 and crane ' s major girder 19 are fixed with bolt, and the installing rack 25 of anchorage 3 with hanging mechanism is linked together, the installing rack 25 of hanging mechanism is fixed on outside outer column 4, traveling roller box 6 is hinged on outer column 4 lower end, outer column 4 is fixedly connected with bolt with outer support oil cylinder 10 bottom, outer support oil cylinder 10 lower end is fixedly connected with distribution beam 7, walking rails 8 is positioned at below distribution beam 7, outside support cylinder 10 is arranged with by being positioned at the support anchor ear 9 of distribution beam 7 and outer column 4 lower end to bear support force.Set a roof beam in place operation time, outer support oil cylinder 10 jacking, now distribution beam 7 compresses walking rails 8, outer supporting leg 1 is supported on bridge 31 on the surface, add between support cylinder 10 and distribution beam 7 outside and support anchor ear 9, when supporting leg 1 is stressed outside, outer support oil cylinder 10 does not stress, but by supporting anchor ear 9, power is delivered in distribution beam 7.During via hole operation, remove the support anchor ear 9 between outer support oil cylinder 10 and distribution beam 7, pack up outer support oil cylinder 10, now distribution beam 7 departs from walking rails 8, and the travelling wheel 17 on traveling roller box 6 contacts walking rails 8 and stressed, coordinates Bridge Erector via hole to move ahead.When needing the distance adjusting supporting leg in the present invention and Bridge Erector, only need unclamp the anchor bolt 29 of anchorage 3, regain outer support oil cylinder 10, allow outer supporting leg 1 be in the state of coming to nothing and make the wheel of the hanging on hanging mechanism 27 hanging stressed on the guide rail 28 of crane ' s major girder 19 bottom outside, motor reducer 26 drives hanging wheel 27 to run before and after guide rail 28, drive outer supporting leg 1 and interior supporting leg 2 to move, so just can adjust the distance of the present invention and middle supporting leg.The taper body structure that outer column 4 is big up and small down, like this while guarantee outer column semi-finals degree, fully can alleviate the weight of outer column 4, reduce cost of production.
Be fixed on the rear connection beam 30 of crane ' s major girder 19 by stay-bolt 22 between the upper flat plate 20 of the movable sleeve 13 of interior supporting leg 2 and lower dull and stereotyped 21, inner column 11 and the lower bottom of dull and stereotyped 21 are rotationally connected by bearing pin 18, two inner columns 11 by bolt with contact framework 12 two ends and be fixedly connected with, inner column 11 lower end is provided with inner support oil cylinder 16.Pylon 14 is arranged on side, movable sleeve 13 rear, pylon 14 is installed electric block 15.When Beam transportation vehicle enters before Bridge Erector, regain inner support oil cylinder 16, electric block 15 holds inner column 11 by wire rope 23, the bearing pin 18 of inner column 11 together with contact framework 30 and inner support oil cylinder 16 below movable sleeve 13 rotates, dig rearwardly and upwardly, get out of the way the forward channel of Beam transportation vehicle, Beam transportation vehicle passes through forward by between two outer columns 4.
Outer supporting leg 1 of the present invention and interior supporting leg 2 support cylinder respectively in girder 19 side is series connection on hydraulic circuit, this makes it possible to ensure that the inner support oil cylinder 16 of Bridge Erector homonymy when hanging beam is consistent with the pressure of outer support oil cylinder 10.The dividing of support force of supporting leg 1 and interior supporting leg 2 mixes also according to certain pro rate outside simultaneously.
Above embodiment is the unrestricted technical scheme of the present invention in order to explanation only, although with reference to above-described embodiment to invention has been detailed description, those of ordinary skill in the art is to be understood that: still can modify to the present invention or equivalent replacement, and not departing from any modification or partial replacement of the spirit and scope of the present invention, it all should be encompassed in the middle of right of the present invention.
Claims (4)
1. the rear auxiliary support apparatus of novel large-tonnage Bridge Erector, it is characterized in that: comprise an interior supporting leg (2) and two outer supporting legs (1), interior supporting leg (2) is supported on rear connection beam (30) middle part of crane ' s major girder (19), and two outer supporting legs (1) are supported on crane ' s major girder (19) left side and right side respectively;
Outer supporting leg (1) comprises anchorage (3), outer column (4), hanging mechanism (5), traveling roller box (6), distribution beam (7), walking rails (8), supports anchor ear (9) and outer support oil cylinder (10), hanging mechanism (5) is symmetrical is provided with two, two hanging mechanisms (5) are located on the left of outer column (4) upper end and right side respectively, each hanging mechanism (5) is equipped with an anchorage (3), traveling roller box (6) is hinged on outer column (4) lower end, before and after traveling roller box (6) bottom, side is equipped with travelling wheel (17), outer support oil cylinder (10) is located at outer column (4) lower end by bolt, outer support oil cylinder (10) vertically arranges and is positioned in the middle of walking roller box (6), outer support oil cylinder (10) lower end is fixedly connected with distribution beam (7), it is middle and corresponding up and down with travelling wheel (17) that walking rails (8) is located at distribution beam (7) bottom, distribution beam (7) bottom surface is lower than travelling wheel (17) lower edge, the support anchor ear (9) be positioned between distribution beam (7) top and outer column (4) lower end is arranged with outside outer support oil cylinder (10),
Interior supporting leg (2) comprises inner column (11), contact framework (12), movable sleeve (13), pylon (14), electric block (15) and inner support oil cylinder (16), inner column (11) is provided with two in left-right direction, movable sleeve (13) is provided with two, each movable sleeve (13) includes the upper flat plate (20) being located at rear connection beam 30 upper surface and the lower flat board (21) being located at rear connection beam (30) soffit, connected by stay-bolt (22) between upper flat plate (20) and lower flat board (21), two inner column (11) upper ends are hinged on lower flat board (21) bottom respectively by bearing pin (18), contact framework (12) level is located between two inner columns (11), pylon (14) is located at upper flat plate (20) and lower flat board (21) rear side, electric block (15) is located on pylon (14), be connected by wire rope (23) between electric block (15) with inner column (11) middle part, inner support oil cylinder (16) is vertically located at inner column (11) lower end, inner support oil cylinder (16) lower end is provided with supporting disk (24).
2. the rear auxiliary support apparatus of novel large-tonnage Bridge Erector according to claim 1, it is characterized in that: described hanging mechanism (5) comprises the installing rack (25) be located at outside outer column (4) upper end and the motor reducer (26) be located on installing rack (25), the clutch end of motor reducer (26) is connected with hanging wheel (27) can rolled along the guide rail (28) of crane ' s major girder (19) bottom outside, anchorage (3) is located on installing rack, anchorage (3) is provided with the anchor bolt (29) be fixedly connected with crane ' s major girder (19) outside.
3. the rear auxiliary support apparatus of novel large-tonnage Bridge Erector according to claim 1 and 2, it is characterized in that: with the middle part of crane ' s major girder (19) for boundary line, the outer support oil cylinder (10) in described left side and inner support oil cylinder (16) adopt the connected mode of series connection on high-pressure oil passage, and the outer support oil cylinder (10) on right side and inner support oil cylinder (16) adopt the connected mode of series connection on high-pressure oil passage.
4. the rear auxiliary support apparatus of novel large-tonnage Bridge Erector according to claim 1 and 2, is characterized in that: the taper body structure that described outer column (4) is big up and small down.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410807062.3A CN104514200B (en) | 2014-12-23 | 2014-12-23 | The rear auxiliary support apparatus of large-tonnage Bridge Erector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410807062.3A CN104514200B (en) | 2014-12-23 | 2014-12-23 | The rear auxiliary support apparatus of large-tonnage Bridge Erector |
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| Publication Number | Publication Date |
|---|---|
| CN104514200A true CN104514200A (en) | 2015-04-15 |
| CN104514200B CN104514200B (en) | 2016-08-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410807062.3A Active CN104514200B (en) | 2014-12-23 | 2014-12-23 | The rear auxiliary support apparatus of large-tonnage Bridge Erector |
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| CN (1) | CN104514200B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106835999A (en) * | 2017-03-31 | 2017-06-13 | 秦皇岛天业通联重工科技有限公司 | A kind of rear supporting leg of bridge erecting machine device |
| CN109778705A (en) * | 2019-02-28 | 2019-05-21 | 刘金生 | It is a kind of that there is the Bridge Erector reinforced with rainproof function for bridge construction |
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| JPH09316829A (en) * | 1996-05-27 | 1997-12-09 | Ishikawajima Constr Materials Co Ltd | Floor plate removing device |
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| CN202390772U (en) * | 2011-12-28 | 2012-08-22 | 郑州新大方重工科技有限公司 | Rear supporting leg device suitable for road and railway bridge erecting machine |
| CN102720132A (en) * | 2011-03-31 | 2012-10-10 | 江苏恩纳斯重工机械有限公司 | Bridge erecting machine capable of side surface beam feeding |
| CN202688900U (en) * | 2012-08-22 | 2013-01-23 | 吴立新 | Telescopic bridging machine |
| CN204356659U (en) * | 2014-12-23 | 2015-05-27 | 郑州新大方重工科技有限公司 | The rear auxiliary support apparatus of novel large-tonnage Bridge Erector |
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| JPH09158118A (en) * | 1995-12-04 | 1997-06-17 | Shinko Kosen Kogyo Kk | Connection device of structure |
| JPH09316829A (en) * | 1996-05-27 | 1997-12-09 | Ishikawajima Constr Materials Co Ltd | Floor plate removing device |
| CN202023155U (en) * | 2011-03-31 | 2011-11-02 | 江苏恩纳斯重工机械有限公司 | Bridge erecting machine capable of feeding beam at side |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106835999A (en) * | 2017-03-31 | 2017-06-13 | 秦皇岛天业通联重工科技有限公司 | A kind of rear supporting leg of bridge erecting machine device |
| CN106835999B (en) * | 2017-03-31 | 2020-02-21 | 秦皇岛天业通联重工科技有限公司 | Rear supporting leg device of bridge girder erection machine |
| CN109778705A (en) * | 2019-02-28 | 2019-05-21 | 刘金生 | It is a kind of that there is the Bridge Erector reinforced with rainproof function for bridge construction |
| CN109778705B (en) * | 2019-02-28 | 2020-10-27 | 山东瑞鸿重工机械有限公司 | Bridge erecting machine with reinforcing and rainproof functions for bridge construction |
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| CN104514200B (en) | 2016-08-17 |
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