CN217601226U - Segmental assembling bridge girder erection machine - Google Patents
Segmental assembling bridge girder erection machine Download PDFInfo
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- CN217601226U CN217601226U CN202221212402.4U CN202221212402U CN217601226U CN 217601226 U CN217601226 U CN 217601226U CN 202221212402 U CN202221212402 U CN 202221212402U CN 217601226 U CN217601226 U CN 217601226U
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Abstract
The utility model discloses a bridge crane is assembled to segmentation, including main frame, first landing leg, second landing leg, third landing leg, fourth landing leg, main overhead traveling crane, supplementary overhead traveling crane and suspension system, the main frame comprises two girders and the even tie beam between two girders, and first landing leg, second landing leg, third landing leg, fourth landing leg support in proper order the girder below, the girder top is equipped with the through-length track, supplies main overhead traveling crane and supplementary overhead traveling crane to walk, and girder lower chord hangs suspension system, and the girder bottom is equipped with indulges and moves the track. The utility model discloses a bridge girder erection machine structure can walk and adjust in a flexible way when satisfying stability.
Description
Technical Field
The utility model relates to a bridge erection equipment technical field, concretely relates to bridge girder erection machine is assembled to festival section.
Background
The bridge erecting machine is main equipment in construction and construction processes of railways, highways, urban roads, bridges and the like, and mainly has the function of placing prefabricated bridge pieces on prefabricated piers. In the prior art, the structural stability and the movement flexibility of the bridge girder erection machine are difficult to be considered simultaneously.
Therefore, a new segment assembling bridge girder erection machine is needed to solve the above technical problems.
SUMMERY OF THE UTILITY MODEL
The utility model provides a bridge girder erection machine is assembled to festival section, stable in structure, removal are nimble, and applicable scene scope is wide.
In a first aspect, an embodiment of the present invention provides a segment assembling bridge girder erection machine, which includes a main frame, a first leg, a second leg, a third leg, a fourth leg, a main crown block, an auxiliary crown block and a hanging system; the first supporting leg is used as a front supporting leg, the second supporting leg and the third supporting leg are used as main supporting legs, and the fourth supporting leg is a fixed supporting leg and is arranged at the rearmost end of the bridge girder erection machine; the hanging system is a mechanism for temporarily hanging each segment block on the bridge girder erection machine; the main crown block is used for hoisting and adjusting Liang Tijie section blocks and transporting the main supporting leg; the auxiliary crown block is used for hoisting and transporting small objects.
The main frame consists of two main beams and a connecting beam between the two main beams; when viewed from one end close to the construction direction, the first support leg, the second support leg, the third support leg and the fourth support leg are sequentially supported below the main beam; the top of the main beam is provided with a through long rail for the main crown block and the auxiliary crown block to walk; the main beam lower chord suspension system; the bottom of the main beam is provided with a longitudinal moving track for movably connecting the second supporting leg and the third supporting leg.
The second supporting leg comprises a second supporting leg cross beam, two hanging brackets are fixed on the lower portions of two ends of the second supporting leg cross beam, the bottom of each hanging bracket is connected with a supporting oil cylinder, and the bottom of each supporting oil cylinder is supported on the triangular bracket; two main supporting legs are arranged above the second supporting leg cross beam, and trays I which can be connected with the longitudinal moving rails at the bottoms of the main beams in a matched mode are arranged at the tops of the two main supporting legs; the center positions of the tops of the two main supporting legs are respectively provided with a longitudinal moving oil cylinder I, and when the longitudinal moving oil cylinders I ascend, the longitudinal moving oil cylinders I are connected with a pin shaft on a longitudinal moving rail at the bottom of the main beam; the bottom of the main supporting leg is movably connected with the cross beam of the second supporting leg through a sliding rail I. The triangular bracket is used for supporting the second supporting leg, the bracket is in a pier holding form, is tensioned up and down transversely through finish rolling deformed steel bars, and the lower part of the bracket is supported in a shear groove of the pier; the second supporting leg is a main supporting leg of the bridge girder erection machine, plays a role in supporting when the segmental girders are assembled, and pushes the main girder to move when the bridge girder erection machine passes through the holes.
The third support leg comprises a third support leg cross beam, two jacking oil cylinders are arranged at the lower parts of two ends of the third support leg cross beam, and the bottoms of the jacking oil cylinders are supported on a bridge deck abutment; two movable trolleys are arranged above the third supporting leg cross beam, and the tops of the two movable trolleys are respectively provided with a tray II which can be matched and connected with the longitudinal moving track at the bottom of the main beam; the center positions of the tops of the two mobile trolleys are respectively provided with a longitudinal moving oil cylinder II, and the longitudinal moving oil cylinders II are connected with a pin shaft on a longitudinal moving rail at the bottom of the main beam when rising; the bottom of the movable trolley is movably connected with the third supporting leg cross beam through a sliding rail II; the third supporting leg is a main supporting leg at the rear side of the bridge girder erection machine, plays a role in supporting when the segmental girders are assembled, and pushes the main girder to move when the bridge girder erection machine passes through the holes.
According to the utility model discloses an aspect, the main frame is horizontal symmetrical structure, the girder adopts triangle truss structure, and two-layer about divideing into, convenient transportation forms through the flange group butt joint in the centre.
According to the utility model discloses an aspect, be provided with between two main legs of second landing leg and connect pull rod I, be provided with the distance adjusting cylinder I that links to each other with the main leg on the second landing leg crossbeam.
According to the utility model discloses an aspect, be provided with on the third landing leg crossbeam and link to each other with two mobile trolley apart from adjusting cylinder II respectively.
According to the utility model discloses an aspect, the slide is all installed to II upper surfaces of tray I and tray, will indulge at slide and girder lower chord and move between the track filling lubricating grease that moves when the equipment moves the hole, keeps the lubrication at this friction position good to the wearing and tearing volume of slide will be noted, must change when the slide wearing and tearing are half its thickness.
Further, according to an aspect of the embodiment of the present invention, the first leg includes a first leg beam, two columns are disposed below the first leg beam, and the columns include a fixed column, a folding column, and a telescopic column, which are connected in sequence, from top to bottom; the first leg beam is connected with the main beam in a sliding manner through a towing and hanging wheel assembly; the side surface of the upright post is connected with an inclined upright post; the first supporting leg is a front supporting point of the bridge girder erection machine.
According to an aspect of the embodiment of the present invention, the fourth leg comprises a fourth leg beam, and the fourth leg beam is fixed on the bridge deck abutment through a support; two groups of supporting legs are arranged above the fourth supporting leg beam, and inclined supports are arranged on the side faces of the supporting legs; each group of support legs comprises two outer sleeves, the lower parts of the outer sleeves are movably connected with an inner sleeve through pin holes, the bottom of the inner sleeve is fixed on a fourth support leg beam, and the outer sleeves and the inner sleeve are adjusted in telescopic height through telescopic oil cylinders; the top of the outer sleeve is connected with the main beam through a hinged support. The fourth landing leg is installed at the bridge girder erection machine rearmost end, for fixed landing leg, and when the normal station position construction of bridge girder erection machine, the fourth landing leg keeps supporting, and fourth landing leg lower part support is adjustable in transverse range, and this sets up to the position that the back auxiliary leg received the load at the bridge floor when adapting to bridge girder erection machine cross curve, enables the stress point and is in concrete beam web position. When the fourth supporting leg is used for conducting hole passing operation, the fourth supporting leg beam must be connected, and the threaded steel bars are connected above the beam and required to be screwed down.
According to the segment assembling bridge girder erection machine provided by the embodiment of the utility model, the second supporting leg and the third supporting leg are used as double main supporting legs for supporting, the stability is good, and the flexible transverse movement and longitudinal movement can be realized; first landing leg is as preceding landing leg, through the triangle-shaped landing leg structure that stand and bearing diagonal formed, and the stability support requirement when can satisfying the operation of bridging machine frame roof beam just can stretch out and draw back and fold, and the fourth landing leg is installed at the bridging machine rearmost as fixed leg, and when the construction of the normal station position of bridging machine, the back landing leg keeps supporting, the utility model discloses a bridging machine structure can walk in a flexible way and adjust when satisfying stability.
Drawings
Other features, objects and advantages of the invention will become apparent from the following detailed description of non-limiting embodiments thereof, when read in conjunction with the accompanying drawings, in which like reference characters designate the same or similar parts throughout the figures thereof, and which are not to scale.
Fig. 1 shows a schematic structural diagram of a segment assembling bridge girder erection machine provided by the present invention;
fig. 2 shows a schematic structural diagram of the main frame provided by the present invention;
fig. 3 shows a schematic structural diagram of a second leg provided by the present invention;
fig. 4 shows a schematic structural diagram of a third leg provided by the present invention;
fig. 5 shows a schematic structural view of a side surface of a third leg provided by the present invention;
fig. 6 shows a schematic structural diagram of a first leg provided by the present invention;
fig. 7 shows a schematic structural diagram of a side surface of a first leg provided by the present invention;
fig. 8 shows a schematic structural diagram of a fourth leg provided by the present invention;
fig. 9 shows a schematic structural diagram of a side surface of a fourth leg provided by the present invention.
In the figure:
1. the crane comprises a first supporting leg, 2 parts of a second supporting leg, 3 parts of a third supporting leg, 4 parts of a fourth supporting leg, 5 parts of a main crown block, 6 parts of an auxiliary crown block, 7 parts of a hanging system and 8 parts of a main frame; 1-1 parts of first supporting leg cross beam, 1-2 parts of fixed column, 1-3 parts of folding column, 1-4 parts of telescopic column, 1-5 parts of traction wheel assembly, 1-6 parts of inclined upright column, 2-1 part of second supporting leg cross beam, 2-2 parts of hanging bracket, 2-3 parts of supporting oil cylinder 2-4 parts of triangular bracket, 2-5 parts of main supporting leg, 2-6 parts of tray I, 2-7 parts of sliding plate, 2-8 parts of longitudinal moving oil cylinder I, 2-9 parts of connecting pull rod, 2-10 parts of distance adjusting oil cylinder I, 2-11 parts of sliding rail I3-1 parts of third support leg cross beam, 3-2 parts of jacking oil cylinder, 3-3 parts of bridge deck abutment, 3-4 parts of movable trolley, 3-5 parts of tray II, 3-6 parts of longitudinal movement oil cylinder II, 3-7 parts of sliding rail II, 3-8 parts of distance adjusting oil cylinder II, 4-1 parts of fourth support leg cross beam, 4-2 parts of outer sleeve, 4-3 parts of inner sleeve, 4-4 parts of telescopic oil cylinder, 4-5 parts of hinged support, 4-6 parts of pin hole, 4-7 parts of inclined support, 8-1 parts of main beam, 8-2 parts of connecting beam and 8-3 parts of longitudinal movement track.
Detailed Description
The features and exemplary embodiments of various aspects of the present invention will be described in detail below, and in order to make the objects, technical solutions, and advantages of the present invention more apparent, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. It will be apparent to one skilled in the art that the present invention may be practiced without some of these specific details. The following description of the embodiments is merely intended to provide a better understanding of the invention by illustrating examples of the invention.
The directional terms used in the following description are intended to refer to directions shown in the drawings, and are not intended to limit the specific structure of the present invention. In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "mounted" and "connected" are to be interpreted broadly, e.g., as either a fixed connection, a removable connection, or an integral connection; can be directly connected or indirectly connected. The specific meaning of the above terms in the present invention can be understood as the case may be, by those of ordinary skill in the art.
It will be understood that when a layer or region is referred to as being "on" or "over" another layer or region in describing the structure of the element, it can be directly on the other layer or region or intervening layers or regions may also be present. And, if the component is turned over, that layer, region, or regions would be "under" or "beneath" another layer, region, or regions.
For better understanding of the present invention, the auxiliary crown block for bridge erecting machine according to the embodiment of the present invention is described in detail below with reference to fig. 1 to 9.
The embodiment of the utility model discloses a segment assembling bridge girder erection machine, which comprises a main frame 8, a first supporting leg 1, a second supporting leg 2, a third supporting leg 3, a fourth supporting leg 4, a main overhead traveling crane 5, an auxiliary overhead traveling crane 6 and a hanging system 7; the first supporting leg 1 is used as a front supporting leg, the second supporting leg 2 and the third supporting leg 3 are used as main supporting legs, and the fourth supporting leg 4 is a fixed supporting leg and is arranged at the rearmost end of the bridge girder erection machine; the hanging system 7 is a mechanism for temporarily hanging each segment block on the bridge girder erection machine; the main crown block 5 is used for hoisting and adjusting Liang Tijie blocks and transporting a main supporting leg; the auxiliary crown block 6 is used for hoisting and transporting small objects.
The main frame 8 consists of two main beams 8-1 and a connecting beam 8-2 between the two main beams 8-1; when viewed from one end close to the construction direction, the first support leg 1, the second support leg 2, the third support leg 3 and the fourth support leg 4 are sequentially supported below the main beam 8-1; the top of the main beam 8-1 is provided with a through long track for the main crown block 5 and the auxiliary crown block 6 to walk; the main beam 8-1 is hung on the hanging system 7 at the lower chord; the bottom of the main beam 8-1 is provided with a longitudinal moving track 8-3 for movably connecting the second supporting leg 2 and the third supporting leg 3.
The first support leg 1 comprises a first support leg cross beam 1-1, two upright columns are arranged below the first support leg cross beam 1-1, and the upright columns comprise a fixed column 1-2, a folding column 1-3 and a telescopic column 1-4 which are sequentially connected from top to bottom; the first leg beam 1-1 is connected with the main beam 8-1 in a sliding manner through a towing wheel assembly 1-5; the side surface of the upright post is connected with an inclined upright post 1-6; the first supporting leg 1 is a front supporting point of the bridge girder erection machine. The height of the whole stand column is adjusted by the telescopic columns 1-4, so that the requirement that different pier height errors and the height requirement of the main beam 8-1 of the bridge erecting machine are different to achieve an enough supporting effect can be met, the folding columns 1-5 can be used for folding the stand column, and the requirement for supporting the bridge abutment on the first supporting leg can be met when the bridge erecting machine is used for erecting the bridge.
The second supporting leg 2 comprises a second supporting leg beam 2-1, two hanging brackets 2-2 are fixed at the lower parts of the two ends of the second supporting leg beam 2-1, the bottom of each hanging bracket 2-2 is connected with a supporting oil cylinder 2-3, and the bottom of each supporting oil cylinder 2-3 is supported on a triangular bracket 2-4; two main supporting legs 2-5 are arranged above the second supporting leg cross beam 2-1, and the tops of the two main supporting legs 2-5 are respectively provided with a tray I which can be matched and connected with a longitudinal moving track 8-3 at the bottom of the main beam; the center positions of the tops of the two main supporting legs are respectively provided with a longitudinal moving oil cylinder I2-8, when the longitudinal moving oil cylinders I2-8 ascend, the longitudinal moving oil cylinders I2-8 are connected with a pin shaft on a longitudinal moving track 8-3 at the bottom of the main beam, and the longitudinal moving oil cylinders I2-8 enable the main beam 8-1 to move forwards. The bottom of the main supporting leg 2-5 is movably connected with the second supporting leg cross beam 2-1 through a sliding rail I2-11. When the longitudinal moving oil cylinder I2-8 retracts, the longitudinal moving oil cylinder I2-8 automatically retracts along the longitudinal moving rail 8-3 through sliding of the hooking wheel on the rail, a pin shaft is inserted into or pulled out of the hole through operation of field personnel, the steps are repeated in a circulating mode, and the main beam 8-1 is stepped to longitudinally move through the hole. When a line with a longitudinal slope exceeding 1.5% is erected, longitudinal moving oil cylinders of a second supporting leg 2 and a third supporting leg 3 cannot be retracted simultaneously, under the condition that longitudinal moving oil cylinders II 3-6 of the third supporting leg 3 are not completely retracted and longitudinal moving sliding shoe pin shafts are installed, the sliding shoe pin shafts cannot be detached from 2 longitudinal moving oil cylinders I2-8 of the second supporting leg 2, the longitudinal moving oil cylinders need to be alternately retracted and extended together, the maximum extending stroke of each time is 1000mm, the safety of longitudinal moving through holes of equipment under a large slope is guaranteed, forward movement of a main beam 8-1 of a bridge erecting machine is completed in a stepping mode, and 4 oil cylinders arranged on 2 main supporting legs (installed on a front pier of the erected beam) are needed to complete together. The triangular bracket 2-4 is used for supporting the second supporting leg 2, the bracket is in a pier holding form, is tensioned up and down transversely through phi 50 finish rolling deformed steel bars, and the lower part of the bracket is supported in a shear groove of a pier; the second supporting leg 2 is a main supporting leg of the bridge girder erection machine, plays a supporting role when the segmental beam is assembled, and pushes the main beam 8-1 to move when the bridge girder erection machine passes through a hole.
The third support leg 3 comprises a third support leg cross beam 3-1, two jacking oil cylinders 3-2 are arranged at the lower parts of two ends of the third support leg cross beam 3-1, and the bottoms of the jacking oil cylinders 3-2 are supported on the bridge deck abutment 3-3; two moving trolleys 3-4 are arranged above the third supporting leg beam 3-1, and trays II 3-5 which can be matched and connected with a longitudinal moving track 8-3 at the bottom of the main beam are arranged at the tops of the two moving trolleys 3-4; the center positions of the tops of the two movable trolleys 3-4 are respectively provided with a longitudinal moving oil cylinder II 3-6, and when the longitudinal moving oil cylinders II 3-6 ascend, the longitudinal moving oil cylinders II are connected with a pin shaft on a longitudinal moving track 8-3 at the bottom of the main beam; the bottom of the movable trolley 3-4 is movably connected with the third supporting leg cross beam 3-1 through a sliding rail II 3-7; the third supporting leg 3 is a main supporting leg at the rear side of the bridge girder erection machine, plays a supporting role when the segmental girders are assembled, and pushes the main girder to move when the bridge girder erection machine passes through the holes.
The fourth supporting leg 4 comprises a fourth supporting leg cross beam 4-1, and the fourth supporting leg cross beam 4-1 is fixed on the bridge deck abutment through a support; two groups of supporting legs are arranged above the fourth supporting leg beam 4-1, and inclined supports 4-7 are arranged on the side faces of the supporting legs; each group of support legs comprises two outer sleeves 4-2, the lower parts of the outer sleeves 4-2 are movably connected with inner sleeves 4-3 through pin holes 4-6, the bottoms of the inner sleeves 4-3 are fixed on fourth support leg beams 4-1, and the outer sleeves 4-2 and the inner sleeves 4-3 are adjusted in telescopic height through telescopic oil cylinders 4-4; the top of the outer sleeve 4-2 is connected with a main beam 8-1 through a hinged support 4-5. Fourth landing leg 4 is installed at the bridge girder erection machine rearmost, for fixed landing leg, and when the normal station position construction of bridge girder erection machine, the fourth landing leg keeps supporting, and fourth landing leg lower part support is adjustable in transverse range, and this sets up to the position that the back auxiliary leg received the load at the bridge floor when adapting to bridge girder erection machine cross the curve, enables the stress point and is in concrete beam web position. When the fourth supporting leg 4 is used for hole passing operation, the fourth supporting leg beam 4-1 must be connected, and the threaded steel bars connected to the upper portion of the beam are required to be screwed down.
In some optional embodiments, the main frame is a transversely symmetrical structure, the main beam is of a triangular truss structure and is divided into an upper layer and a lower layer, transportation is facilitated, and the middle is formed by butt joint of flange blocks.
According to the utility model discloses an aspect, be provided with between two main legs of second landing leg and connect pull rod I, be provided with the distance adjusting cylinder I that links to each other with the main leg on the second landing leg crossbeam.
In some optional embodiments, the third leg cross member 3-1 is provided with distance adjusting cylinders ii 3-8 connected with the two mobile trolleys 3-4 respectively.
In some optional embodiments, the sliding plates 2-7 are arranged on the upper surfaces of the trays I2-6 and the trays II 3-5, lubricating grease is filled between the sliding plates 2-7 and the lower chord longitudinal moving rail 8-3 of the main beam when the equipment longitudinally moves through the holes, the lubrication of the friction parts is kept good, the abrasion amount of the sliding plates is required to be noticed, and the sliding plates must be replaced when the sliding plates are abraded to half the thickness of the sliding plates.
In accordance with the embodiments of the present invention as set forth above, these embodiments do not set forth all of the details nor limit the invention to the specific embodiments described. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and its practical application, to thereby enable others skilled in the art to best utilize the invention and its various embodiments with various modifications as are suited to the particular use contemplated. The present invention is limited only by the claims and their full scope and equivalents.
Claims (7)
1. A segment assembling bridge girder erection machine comprises a main frame, a first supporting leg, a second supporting leg, a third supporting leg, a fourth supporting leg, a main crown block, an auxiliary crown block and a hanging system, and is characterized in that,
the main frame consists of two main beams and a connecting beam between the two main beams; the first support leg, the second support leg, the third support leg and the fourth support leg are sequentially supported below the main beam; the top of the main beam is provided with a through long track for the main crown block and the auxiliary crown block to walk; the main beam lower chord suspension system; the bottom of the main beam is provided with a longitudinal moving track;
the second supporting leg comprises a second supporting leg cross beam, two hanging brackets are fixed at the lower parts of two ends of the second supporting leg cross beam, the bottom of each hanging bracket is connected with a supporting oil cylinder, and the bottom of each supporting oil cylinder is supported on the triangular bracket; two main supporting legs are arranged above the second supporting leg cross beam, and trays I which can be connected with the longitudinal moving rails at the bottoms of the main beams in a matched mode are arranged at the tops of the two main supporting legs; the center positions of the tops of the two main supporting legs are respectively provided with a longitudinal moving oil cylinder I, and the longitudinal moving oil cylinders I are connected with a pin shaft on a longitudinal moving rail at the bottom of the main beam when ascending; the bottom of the main supporting leg is movably connected with the second supporting leg cross beam through a sliding rail I;
the third support leg comprises a third support leg cross beam, two jacking oil cylinders are arranged at the lower parts of two ends of the third support leg cross beam, and the bottoms of the jacking oil cylinders are supported on a bridge deck abutment; two movable trolleys are arranged above the third supporting leg cross beam, and trays II which can be connected with the longitudinal moving track at the bottom of the main beam in a matched mode are arranged at the tops of the two movable trolleys; the center positions of the tops of the two mobile trolleys are respectively provided with a longitudinal moving oil cylinder II, and the longitudinal moving oil cylinders II are connected with a pin shaft on a longitudinal moving rail at the bottom of the main beam when rising; the bottom of the movable trolley is movably connected with the third supporting leg cross beam through a sliding rail II.
2. The segmental assembling bridge girder erection machine according to claim 1, wherein the main frame is in a transversely symmetrical structure, the main beam is in a triangular truss structure and is divided into an upper layer and a lower layer, and the middle part of the main beam is formed by butt joint of flange blocks.
3. The segment assembling bridge girder erection machine according to claim 1, wherein a connecting pull rod I is arranged between two main supporting legs of the second supporting leg, and a distance adjusting cylinder I connected with the main supporting legs is arranged on a cross beam of the second supporting leg.
4. The segment assembling bridge girder erection machine according to claim 1, wherein the third leg beam is provided with a distance adjusting cylinder ii respectively connected to the two mobile trolleys.
5. The segment assembling bridge girder erection machine according to claim 1, wherein sliding plates are installed on the upper surfaces of the first tray and the second tray.
6. The segment assembling bridge girder erection machine of claim 1, wherein the first leg comprises a first leg cross beam, two upright columns are arranged below the first leg cross beam, and the upright columns comprise a fixed column, a folding column and a telescopic column which are sequentially connected from top to bottom; the first leg beam is connected with the main beam in a sliding manner through a towing and hanging wheel assembly; the side surface of the upright post is connected with an inclined upright post.
7. The segment assembling bridge girder erection machine of claim 1, wherein the fourth leg comprises a fourth leg beam fixed on the bridge deck abutment by a support; two groups of supporting legs are arranged above the fourth supporting leg cross beam, and inclined supports are arranged on the side faces of the supporting legs; each group of support legs comprises two outer sleeves, the lower parts of the outer sleeves are movably connected with an inner sleeve through pin holes, the bottom of the inner sleeve is fixed on a fourth support leg beam, and the outer sleeves and the inner sleeve are adjusted in telescopic height through telescopic oil cylinders; the top of the outer sleeve is connected with the main beam through a hinged support.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221212402.4U CN217601226U (en) | 2022-05-20 | 2022-05-20 | Segmental assembling bridge girder erection machine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221212402.4U CN217601226U (en) | 2022-05-20 | 2022-05-20 | Segmental assembling bridge girder erection machine |
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| CN217601226U true CN217601226U (en) | 2022-10-18 |
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| CN202221212402.4U Active CN217601226U (en) | 2022-05-20 | 2022-05-20 | Segmental assembling bridge girder erection machine |
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