CN101294370A - Erecting machine of bridge span for road and railway - Google Patents
Erecting machine of bridge span for road and railway Download PDFInfo
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- CN101294370A CN101294370A CNA2008100552092A CN200810055209A CN101294370A CN 101294370 A CN101294370 A CN 101294370A CN A2008100552092 A CNA2008100552092 A CN A2008100552092A CN 200810055209 A CN200810055209 A CN 200810055209A CN 101294370 A CN101294370 A CN 101294370A
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Abstract
The invention belongs to a bridge girder erection machine, in particular to a highway-railway bridge girder erection machine. Through adopting the technical proposals that a first column, a third column and a second column are changed into two contracted sections, a horizontal traverse motion is arranged on the third column, etc., the invention solves the problems existing in prior art that the construction site limits the lowest height of the bridge girder erection machine, the girder erecting space of the bridge girder erection machine cannot be ensured, the column base of the third column is suspended when a curved bridge is erected, the third column cannot stand when the bridge girder erection machine passes through the hole, etc. The highway-railway bridge girder erection machine has the advantages that transfer among bridges can be carried out by reducing the height, the machine can pass through a tunnel or a curve tunnel, the transfer time among the bridges can be reduced, the bridge girder erection machine pass through the tunnel more smoothly, the assembly is simpler, etc.
Description
Affiliated technical field
The invention belongs to the bridge formation machine, be meant a kind of erecting machine of bridge span for road and railway especially.
Background technology
The domestic existing stride type telescopic boom single conducting beam bridge formation machine (patent No.: 01224076.1) be the utility model patent of applicant in the calendar year 2001 application, exist bridge formation machine highest order in the above-mentioned prior art and the lowest order discrepancy in elevation can not effectively guarantee 〉=3000mm, can not satisfy the requirement that job site bound pair bridge formation machine minimum altitude and bridge formation frame roof beam structure beam space must guarantee, No. three post suspension column positions are unsettled when setting up curved bridge, during bridge formation machine via hole No. three posts can't Zhi Li etc. problem.
Summary of the invention
The object of the present invention is to provide a kind of erecting machine of bridge span for road and railway, the low level traveling is by tunnel and can be by the purpose of curved tunnel when shifting to be implemented between bridge.
Overall technology design of the present invention is:
Erecting machine of bridge span for road and railway comprises hanging beam dolly, pillar, hydraulic pressure transverse-moving mechanism on horn I, II, the horn; It also comprises:
One, No. three post in A, the pillar comprises top rail 1, one-level guide pillar 2, secondary guide pillar 4, jacking cylinder 5, guide pin bushing 6, walks cross girders 7; Wherein top rail 1 is fixedlyed connected with one-level guide pillar 2 tops, both sides; Plug-in mounting is fixed in one-level guide pillar 2 lower ends and the secondary guide pillar 4; Plug-in mounting is fixed in secondary guide pillar 4 lower ends and the guide pin bushing 6; Guide pin bushing 6 lower ends with walk cross girders 7 and fixedly connected; Jacking cylinder 5 movable ends are connected with one-level guide pillar 2; Jacking cylinder 5 cylinder bodies are connected with guide pin bushing 6;
No. two posts in B, the pillar comprise top rail 9, last longeron 10, one-level guide pillar 11, secondary guide pillar 12, oil cylinder adjustment joint 13, jacking cylinder 14, guide pin bushing 15, following longeron 16, walk cross girders 17, reach oil cylinder seat 18; Top rail 9 is fixedlyed connected with longeron 10 on the both sides; Last longeron 10 is fixedlyed connected with one-level guide pillar 11 tops; Plug-in mounting is fixed in one-level guide pillar 11 lower ends and the secondary guide pillar 12; Plug-in mounting is fixed in secondary guide pillar 12 lower ends and the guide pin bushing 15; Fixedly connected with following longeron 16 in guide pin bushing 15 lower ends; Following longeron 16 with walk cross girders 17 and fixedly connected; The oil cylinder adjustment saves 13 tops and last longeron 10 is fixing; Jacking cylinder 14 movable ends are connected with oil cylinder adjustment joint 13; Jacking cylinder 14 cylinder bodies are connected with oil cylinder seat 18; Oil cylinder seat 18 is fixed as one with following longeron 16;
The transverse-moving mechanism of C, No. three posts, this transverse-moving mechanism comprise crossbeam 34, beams fixture 35, sideslip oil cylinder 36, horn 37, wire rope 38, cylinder 40; Fixedly connected with cylinder 40 in crossbeam 34 two ends behind beams fixture 35, beams fixture 35 is fixedlyed connected with horn 37, and sideslip oil cylinder 36 cylinder bodies are fixedlyed connected with horn 37, and the working end of sideslip oil cylinder 36 is connected with cylinder 40 with wire rope 38.
Concrete technology solution of the present invention also has:
One, the preferred annexation of each member is in No. three posts: one-level guide pillar 2 lower ends are inserted in secondary guide pillar 4 inner chambers and are fixing with cylinder bearing pin 8; Secondary guide pillar 4 lower ends are inserted in guide pin bushing 6 inner chambers fixing with cylinder bearing pin 8; Jacking cylinder 5 movable ends are connected with one-level guide pillar 2 with oil cylinder bearing pin 3; Jacking cylinder 5 cylinder bodies are connected with guide pin bushing 6 with oil cylinder bearing pin 3.
The preferred annexation of each member is in No. two posts: one-level guide pillar 11 lower ends are inserted in secondary guide pillar 12 inner chambers fixing with cylinder bearing pin 19; It is fixing with cylinder bearing pin 19 that secondary guide pillar 12 lower ends are inserted in guide pin bushing 15 inner chambers; Jacking cylinder 14 movable ends are connected with oil cylinder adjustment joint 13 with oil cylinder bearing pin 20; Jacking cylinder 14 cylinder bodies are connected with oil cylinder seat 18 with oil cylinder bearing pin 20.
The hydraulic pressure transverse-moving mechanism is made up of sideslip oil cylinder 26, oil cylinder seat 25, cylinder support 22 and oil cylinder bearing pin 21,24, fixedly connected with curved beam 27 in oil cylinder seat 25 bottoms, cylinder support 22 is fixedlyed connected with cylinder crossbeam 23, the working end of sideslip oil cylinder 26 is connected with cylinder support 22 with oil cylinder bearing pin 21, and the cylinder body of sideslip oil cylinder 26 is connected with oil cylinder seat 25 with oil cylinder bearing pin 24.
The working end of sideslip oil cylinder 26 is connected with oil cylinder bearing pin 21 and cylinder support 22 cross-under.
Oil cylinder seat 25 bottoms adopt bolt to be connected with curved beam 27.
Cylinder support 22 adopts bolt to be connected with cylinder crossbeam 23.
Fixedly connected with oil cylinder seat 25 with oil cylinder bearing pin 24 in the cylinder body middle part of sideslip oil cylinder 26.
The end surfaces of horn I horizontal fixed at interval is provided with the connection sun 28 of protrusion, with another horn II end face that the horn end surfaces that connects sun 28 is set corresponding at interval be fixed with can with connection the moon that is connected sun 28 a realization plug-in mounting secure fit 30, corresponding connection sun 28 with is connected between cloudy 30 by bearing pin 29 cross-under assembling, the outer face of bearing pin 29 is provided with locking member 31 with being connected between positive 28 of the moon 30 or the connection.
Bearing pin 29 outer face bulgings form the bearing pin caps, and locking member 31 is fixedly connected on bearing pin cap and the bolt that is connected between sun 28 or connection the moon 30 for cross-under.
Also comprise transfer device between a bridge, transfer device comprises and is arranged at hanging beam dolly below and by end to end at least two the transhipment supports 33 of Beam transportation vehicle 32 tractions between this bridge.
It is fixedly connected that chain is led in employing between Beam transportation vehicle 32, the transhipment support 33.
Crossbeam 34 two ends behind beams fixture 35 are connected with cylinder 40 usefulness cylinder bearing pins 39, and beams fixture 35 usefulness fixed pin shafts 41 are fixedlyed connected with horn 37, and sideslip oil cylinder 36 cylinder bodies are connected with horn 37 bolts.
Substantive distinguishing features that the present invention is obtained and significant technological progress are:
1, to change two joints into flexible for one, No. three post and No. two posts, low level traveling and can pass through the tunnel when shifting between bridge; When stretching about sideslip oil cylinder, drive No. three post move left and right.No. three post move left and right setting up of machine curve railway bridge of can realizing building bridge, and can pass through curved tunnel.
2, to shift the mode in building site be the reach of short distance stride for former bridge machine, long-distance disintegration bridge machine automobile transportation back assembling, and the slow time of speed, long workload was big.Now the bridge formation machine is dropped to low level and drop on the Beam transportation vehicle and shift, shortened transfer time between bridge.
3, in the transverse-moving mechanism cylinder body of sideslip oil cylinder is arranged on the curved beam, its working end is located on the crossbeam, has reduced the width that transverse-moving mechanism exceeds the bridge formation machine effectively, more helps the bridge formation machine and passes through the tunnel smoothly.
4, the negative and positive header structure in conjunction with the cooperation of employing bearing pin plug-in mounting between the horn more is tending towards simply assembling, and it is more firm to connect.
Description of drawings
Accompanying drawing of the present invention has:
Fig. 1 is the structural scheme of mechanism of one, No. three post.
Fig. 2 is the structural representation of No. two posts.
Fig. 3 is the structural representation of transverse-moving mechanism.
Fig. 4 is the structural representation of horn.
Fig. 5 is that the C-C of Fig. 4 is to view.
Fig. 6 is the A portion enlarged drawing of Fig. 4.
Fig. 7 is a yin, yang head plug-in mounting structure schematic diagram.
Fig. 8 is the structural representation of transfer device between bridge.
Fig. 9 is the structural representation of No. three post transverse-moving mechanisms.
The specific embodiment
Below in conjunction with accompanying drawing embodiments of the invention are further described, but not as a limitation of the invention.
The overall structure of present embodiment as shown, comprising the hanging beam dolly on horn I, II, the horn, pillar, hydraulic pressure transverse-moving mechanism; It also comprises:
One, No. three post in A, the pillar comprises top rail 1, one-level guide pillar 2, secondary guide pillar 4, jacking cylinder 5, guide pin bushing 6, walks cross girders 7; Wherein top rail 1 is fixedlyed connected with one-level guide pillar 2 tops, both sides; Plug-in mounting is fixed in one-level guide pillar 2 lower ends and the secondary guide pillar 4; Plug-in mounting is fixed in secondary guide pillar 4 lower ends and the guide pin bushing 6; Guide pin bushing 6 lower ends with walk cross girders 7 and fixedly connected; Jacking cylinder 5 movable ends are connected with one-level guide pillar 2; Jacking cylinder 5 cylinder bodies are connected with guide pin bushing 6;
No. two posts in B, the pillar comprise top rail 9, last longeron 10, one-level guide pillar 11, secondary guide pillar 12, oil cylinder adjustment joint 13, jacking cylinder 14, guide pin bushing 15, following longeron 16, walk cross girders 17, reach oil cylinder seat 18; Top rail 9 is fixedlyed connected with longeron 10 on the both sides; Last longeron 10 is fixedlyed connected with one-level guide pillar 11 tops; Plug-in mounting is fixed in one-level guide pillar 11 lower ends and the secondary guide pillar 12; Plug-in mounting is fixed in secondary guide pillar 12 lower ends and the guide pin bushing 15; Fixedly connected with following longeron 16 in guide pin bushing 15 lower ends; Following longeron 16 with walk cross girders 17 and fixedly connected; The oil cylinder adjustment saves 13 tops and last longeron 10 is fixing; Jacking cylinder 14 movable ends are connected with oil cylinder adjustment joint 13; Jacking cylinder 14 cylinder bodies are connected with oil cylinder seat 18; Oil cylinder seat 18 is fixed as one with following longeron 16;
The transverse-moving mechanism of C, No. three posts, this transverse-moving mechanism comprise crossbeam 34, beams fixture 35, sideslip oil cylinder 36, horn 37, wire rope 38, cylinder 40; Fixedly connected with cylinder 40 in crossbeam 34 two ends behind beams fixture 35, beams fixture 35 is fixedlyed connected with horn 37, and sideslip oil cylinder 36 cylinder bodies are fixedlyed connected with horn 37, and the working end of sideslip oil cylinder 36 is connected with cylinder 40 with wire rope 38.
One, each member annexation is in No. three posts: one-level guide pillar 2 lower ends are inserted in secondary guide pillar 4 inner chambers and are fixing with cylinder bearing pin 8; Secondary guide pillar 4 lower ends are inserted in guide pin bushing 6 inner chambers fixing with cylinder bearing pin 8; Jacking cylinder 5 movable ends are connected with one-level guide pillar 2 with oil cylinder bearing pin 3; Jacking cylinder 5 cylinder bodies are connected with guide pin bushing 6 with oil cylinder bearing pin 3.
Each member annexation is in No. two posts: one-level guide pillar 11 lower ends are inserted in secondary guide pillar 12 inner chambers fixing with cylinder bearing pin 19; It is fixing with cylinder bearing pin 19 that secondary guide pillar 12 lower ends are inserted in guide pin bushing 15 inner chambers; Jacking cylinder 14 movable ends are connected with oil cylinder adjustment joint 13 with oil cylinder bearing pin 20; Jacking cylinder 14 cylinder bodies are connected with oil cylinder seat 18 with oil cylinder bearing pin 20.
The hydraulic pressure transverse-moving mechanism is made up of sideslip oil cylinder 26, oil cylinder seat 25, cylinder support 22 and oil cylinder bearing pin 21,24, fixedly connected with curved beam 27 in oil cylinder seat 25 bottoms, cylinder support 22 is fixedlyed connected with cylinder crossbeam 23, the working end of sideslip oil cylinder 26 is connected with cylinder support 22 with oil cylinder bearing pin 21, and the cylinder body of sideslip oil cylinder 26 is connected with oil cylinder seat 25 with oil cylinder bearing pin 24.The working end of sideslip oil cylinder 26 is connected with oil cylinder bearing pin 21 and cylinder support 22 cross-under.Oil cylinder seat 25 bottoms adopt bolt to be connected with curved beam 27.Cylinder support 22 adopts bolt to be connected with cylinder crossbeam 23.Fixedly connected with oil cylinder seat 25 with oil cylinder bearing pin 24 in the cylinder body middle part of sideslip oil cylinder 26.
The end surfaces of horn I horizontal fixed at interval is provided with the connection sun 28 of protrusion, with another horn II end face that the horn end surfaces that connects sun 28 is set corresponding at interval be fixed with can with connection the moon that is connected sun 28 a realization plug-in mounting secure fit 30, corresponding connection sun 28 with is connected between cloudy 30 by bearing pin 29 cross-under assembling, the outer face of bearing pin 29 is provided with locking member 31 with being connected between positive 28 of the moon 30 or the connection.Bearing pin 29 outer face bulgings form the bearing pin caps, and locking member 31 is fixedly connected on bearing pin cap and the bolt that is connected between sun 28 or connection the moon 30 for cross-under.Adjacent connection sun 28, the hole heart that connects the pin shaft hole on cloudy 30 are located on the same line.
Also comprise transfer device between a bridge, transfer device comprises and is arranged at hanging beam dolly below and by end to end at least two the transhipment supports 33 of Beam transportation vehicle 32 tractions between this bridge.It is fixedly connected that chain is led in employing between Beam transportation vehicle 32, the transhipment support 33.
Crossbeam 34 two ends are connected with cylinder 40 usefulness cylinder bearing pins 39, and beams fixture 35 usefulness fixed pin shafts 41 are fixedlyed connected with horn 37, and sideslip oil cylinder 36 cylinder bodies are connected with horn 37 bolts.
Claims (14)
1, erecting machine of bridge span for road and railway comprises hanging beam dolly, pillar, hydraulic pressure transverse-moving mechanism on horn (I), (II), the horn; It is characterized in that it also comprises:
One, No. three post in A, the pillar comprises top rail (1), one-level guide pillar (2), secondary guide pillar (4), jacking cylinder (5), guide pin bushing (6), walks cross girders (7); Wherein top rail (1) is fixedlyed connected with both sides one-level guide pillars (2) top; One-level guide pillar (2) lower end and the interior plug-in mounting of secondary guide pillar (4) are fixed; Secondary guide pillar (4) lower end and the interior plug-in mounting of guide pin bushing (6) are fixed; Guide pin bushing (6) lower end with walk cross girders (7) and fixedly connected; Jacking cylinder (5) movable end is connected with one-level guide pillar (2); Jacking cylinder (5) cylinder body is connected with guide pin bushing (6);
No. two posts in B, the pillar comprise top rail (9), upward longeron (10), one-level guide pillar (11), secondary guide pillar (12), oil cylinder adjustment save (13), jacking cylinder (14), guide pin bushing (15), following longeron (16), walk cross girders (17), reach oil cylinder seat (18); Top rail (9) is fixedlyed connected with longeron (10) on the both sides; Last longeron (10) is fixedlyed connected with one-level guide pillar (11) top; One-level guide pillar (11) lower end and the interior plug-in mounting of secondary guide pillar (12) are fixed; Secondary guide pillar (12) lower end and the interior plug-in mounting of guide pin bushing (15) are fixed; Fixedly connected with following longeron (16) in guide pin bushing (15) lower end; Following longeron (16) with walk cross girders (17) and fixedly connected; Oil cylinder adjustment joint (13) top and last longeron (10) are fixing; Jacking cylinder (14) movable end is connected with oil cylinder adjustment joint (13); Jacking cylinder (14) cylinder body is connected with oil cylinder seat (18); Oil cylinder seat (18) is fixed as one with following longeron (16);
The transverse-moving mechanism of C, No. three posts, this transverse-moving mechanism comprise crossbeam (34), beams fixture (35), sideslip oil cylinder (36), horn (37), wire rope (38), cylinder (40); Fixedly connected with cylinder (40) in crossbeam (34) two ends behind beams fixture (35), beams fixture (35) is fixedlyed connected with horn (37), sideslip oil cylinder (36) cylinder body is fixedlyed connected with horn (37), and the working end of sideslip oil cylinder (36) is connected with cylinder (40) with wire rope (38).
2, erecting machine of bridge span for road and railway according to claim 1 is characterized in that one-level guide pillar (2) lower end in described one, No. three post is inserted in secondary guide pillar (4) inner chamber also fixing with cylinder bearing pin (8); Secondary guide pillar (4) lower end is inserted in guide pin bushing (6) inner chamber fixing with cylinder bearing pin (8); Jacking cylinder (5) movable end is connected with one-level guide pillar (2) with oil cylinder bearing pin (3); Jacking cylinder (5) cylinder body is connected with guide pin bushing (6) with oil cylinder bearing pin (3).
3, erecting machine of bridge span for road and railway according to claim 1 is characterized in that one-level guide pillar (11) lower end in described No. two posts is inserted in secondary guide pillar (12) inner chamber fixing with cylinder bearing pin (19); It is fixing with cylinder bearing pin (19) that secondary guide pillar (12) lower end is inserted in guide pin bushing (15) inner chamber; Jacking cylinder (14) movable end is connected with oil cylinder adjustment joint (13) with oil cylinder bearing pin (20); Jacking cylinder (14) cylinder body is connected with oil cylinder seat (18) with oil cylinder bearing pin (20).
4, erecting machine of bridge span for road and railway according to claim 1, it is characterized in that described hydraulic pressure transverse-moving mechanism is made up of sideslip oil cylinder (26), oil cylinder seat (25), cylinder support (22) and oil cylinder bearing pin (21), (24), fixedly connected with curved beam (27) in oil cylinder seat (25) bottom, cylinder support (22) is fixedlyed connected with cylinder crossbeam (23), the working end of sideslip oil cylinder (26) is connected with cylinder support (22) with oil cylinder bearing pin (21), and the cylinder body of sideslip oil cylinder (26) is connected with oil cylinder seat (25) with oil cylinder bearing pin (24).
5, erecting machine of bridge span for road and railway according to claim 4 is characterized in that the working end of described sideslip oil cylinder (26) is connected with oil cylinder bearing pin (21) and cylinder support (22) cross-under.
6, improved walking single conducting beam bridge formation machine according to claim 4 is characterized in that described oil cylinder seat (25) bottom and curved beam (27) adopt bolt to be connected.
7, erecting machine of bridge span for road and railway according to claim 4 is characterized in that described cylinder support (22) and cylinder crossbeam (23) adopt bolt to be connected.
8, erecting machine of bridge span for road and railway according to claim 4 is characterized in that fixedlying connected with oil cylinder seat (25) with oil cylinder bearing pin (24) in the cylinder body middle part of described sideslip oil cylinder (26).
9, erecting machine of bridge span for road and railway according to claim 1, it is characterized in that the end surfaces interval horizontal fixed of described horn (I) is provided with the connection sun head (28) of protrusion, with another horn (II) end face that the horn end surfaces that connects sun head (28) is set corresponding at interval be fixed with can with is connected sun head (28) and realizes the connection cloudy (30) of plug-in mounting secure fit, corresponding connection sun head (28) with is connected between the cloudy head (30) by bearing pin (29) cross-under assembling, the outer face of bearing pin (29) is provided with locking member (31) with being connected between cloudy (30) or the connection positive (28).
10, erecting machine of bridge span for road and railway according to claim 9 is characterized in that the bulging of described bearing pin (29) outer face forms the bearing pin cap, and locking member (31) is fixedly connected on bearing pin cap and the bolt that is connected between sun head (28) or the cloudy head of connection (30) for cross-under.
11,, it is characterized in that described adjacent connection sun head (28), the hole heart of the pin shaft hole on the cloudy head of connection (30) are located on the same line according to claim 9 or 10 described erecting machine of bridge span for road and railway.
12, erecting machine of bridge span for road and railway according to claim 1 is characterized in that also comprising transfer device between a bridge, and transfer device comprises and is arranged at hanging beam dolly below and by Beam transportation vehicle (32) traction end to end at least two transhipment supports (33) between this bridge.
13, erecting machine of bridge span for road and railway according to claim 12 is characterized in that adopting between adjacent Beam transportation vehicle (32), transhipment support (33) that to lead chain fixedly connected.
14, erecting machine of bridge span for road and railway according to claim 1, it is characterized in that crossbeam (34) two ends behind beams fixture (35) are connected with cylinder bearing pin (39) with cylinder (40), beams fixture (35) is fixedlyed connected with horn (37) with fixed pin shaft (41), and sideslip oil cylinder (36) cylinder body is connected with horn (37) bolt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100552092A CN101294370B (en) | 2008-06-19 | 2008-06-19 | Erecting machine of bridge span for road and railway |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100552092A CN101294370B (en) | 2008-06-19 | 2008-06-19 | Erecting machine of bridge span for road and railway |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101294370A true CN101294370A (en) | 2008-10-29 |
| CN101294370B CN101294370B (en) | 2010-11-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008100552092A Active CN101294370B (en) | 2008-06-19 | 2008-06-19 | Erecting machine of bridge span for road and railway |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102051860A (en) * | 2011-01-31 | 2011-05-11 | 邯郸中铁桥梁机械有限公司 | Bridge erecting and track laying machine for railway |
| CN102154991A (en) * | 2011-03-02 | 2011-08-17 | 黄效发 | Single guiding beam retractable bridge erecting machine |
| CN102493357A (en) * | 2011-12-28 | 2012-06-13 | 郑州新大方重工科技有限公司 | Rear leg device suitable for highway and railway two-purpose bridge girder erection machine |
| CN103321156A (en) * | 2013-07-01 | 2013-09-25 | 中铁科工集团有限公司 | Foldable through-tunnel bridge girder erection machine rear support leg and application thereof |
| CN110284429A (en) * | 2019-04-24 | 2019-09-27 | 中国一冶集团有限公司 | Scalable nose girder and its application method |
-
2008
- 2008-06-19 CN CN2008100552092A patent/CN101294370B/en active Active
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102051860A (en) * | 2011-01-31 | 2011-05-11 | 邯郸中铁桥梁机械有限公司 | Bridge erecting and track laying machine for railway |
| CN102051860B (en) * | 2011-01-31 | 2012-11-14 | 邯郸中铁桥梁机械有限公司 | Bridge erecting and track laying machine for railway |
| CN102154991A (en) * | 2011-03-02 | 2011-08-17 | 黄效发 | Single guiding beam retractable bridge erecting machine |
| CN102154991B (en) * | 2011-03-02 | 2013-12-18 | 黄效发 | Single guiding beam retractable bridge erecting machine |
| CN102493357A (en) * | 2011-12-28 | 2012-06-13 | 郑州新大方重工科技有限公司 | Rear leg device suitable for highway and railway two-purpose bridge girder erection machine |
| CN102493357B (en) * | 2011-12-28 | 2013-11-27 | 郑州新大方重工科技有限公司 | Rear leg device suitable for highway and railway two-purpose bridge girder erection machine |
| CN103321156A (en) * | 2013-07-01 | 2013-09-25 | 中铁科工集团有限公司 | Foldable through-tunnel bridge girder erection machine rear support leg and application thereof |
| CN110284429A (en) * | 2019-04-24 | 2019-09-27 | 中国一冶集团有限公司 | Scalable nose girder and its application method |
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| Publication number | Publication date |
|---|---|
| CN101294370B (en) | 2010-11-10 |
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