CN220056001U - Lifting appliance for erecting section box girders by using suspension girders - Google Patents

Lifting appliance for erecting section box girders by using suspension girders Download PDF

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Publication number
CN220056001U
CN220056001U CN202321466448.3U CN202321466448U CN220056001U CN 220056001 U CN220056001 U CN 220056001U CN 202321466448 U CN202321466448 U CN 202321466448U CN 220056001 U CN220056001 U CN 220056001U
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China
Prior art keywords
girder
lifting appliance
suspension
box girder
spreader
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CN202321466448.3U
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Inventor
朱珍慧
潘文波
邵俊华
车剂
齐有宝
周伟宽
孙盛
徐伟
何志诚
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No2 Engineering Co ltd Of Cccc Third Harbor Engineering Co ltd
CCCC Third Harbor Engineering Co Ltd
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No2 Engineering Co ltd Of Cccc Third Harbor Engineering Co ltd
CCCC Third Harbor Engineering Co Ltd
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Priority to CN202321466448.3U priority Critical patent/CN220056001U/en
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Abstract

The utility model provides a lifting appliance for erecting a section box girder by using a suspension girder, which is used for construction of a partial load section box girder and comprises the suspension girder which is suspended at high altitude, wherein the suspension girder forms a suspension space and is positioned on an existing building; the lifting appliance is positioned on the hanging beam, the top of the lifting appliance is connected with a crane through a steel wire rope, and the bottom of the lifting appliance is connected with a section box beam through a connecting component; the connecting component comprises a connecting piece which penetrates through the upper part of the section box girder and stretches into the lifting appliance, and the length of the connecting piece stretching into the lifting appliance is adjusted so that the stress on two sides of the unbalanced loading section box girder is balanced; still including being located the first adjusting part of hoist, first adjusting part is used for adjusting the length of stretching into of coupling assembling in the hoist, and then adjusts the atress size. The utility model utilizes the suspension beams to avoid the arrangement of scaffolds and the like, and the first adjusting component adjusts the distance between the lifting appliance and the section box beams so as to lift the unbalanced-load section box Liang Pingwen.

Description

Lifting appliance for erecting section box girders by using suspension girders
Technical Field
The utility model relates to the technical field of box girder erection in overhead construction, in particular to a lifting appliance for erecting a segmental box girder by using a suspension girder.
Background
In overhead line construction, when the construction position is on the busy road section, because can not too much influence traffic, so select prefabricated section to assemble to reduce and occupy construction site and improve the efficiency of construction, reduce the influence to public traffic, make production and life harmonious coexistence. If the suspension beam is selected for construction, the erection of an over-high scaffold and the like can be avoided, however, in the construction mode, a proper lifting appliance is required to be selected for the construction of the section box beam in the suspension beam, particularly the section box beam with unbalanced load, the stress on two sides of the section box beam is different, and the balance consideration is required to be fully carried out.
Disclosure of Invention
The utility model aims to provide a lifting appliance for erecting a section box girder by using a suspension girder, which realizes the lifting of the section box girder in high altitude.
The technical scheme for realizing the purpose of the utility model is as follows:
a lifting appliance for erecting a section box girder by using a suspension girder, which is used for construction of an unbalanced load section box girder and comprises,
the suspension beam is suspended in the air, forms a suspension space, and is positioned on the existing building;
the lifting appliance is positioned on the hanging beam, the top of the lifting appliance is connected with a crane through a steel wire rope, and the bottom of the lifting appliance is connected with a section box beam through a connecting component;
the connecting component comprises a connecting piece which penetrates through the upper part of the section box girder and stretches into the lifting appliance, and the length of the connecting piece stretching into the lifting appliance is adjusted so that the stress on two sides of the unbalanced loading section box girder is balanced;
still including being located the first adjusting part of hoist, first adjusting part is used for adjusting the length of stretching into of coupling assembling in the hoist, and then adjusts the atress size.
As a further improvement of the utility model, the utility model also comprises a second adjusting component positioned in the segmental box girder, wherein an adjusting section is formed between the first adjusting component and the second adjusting component, and the length of the adjusting section is adjusted so as to realize the stress balance of the unbalanced load segmental box girder.
As a further improvement of the utility model, the connecting piece is a finish-rolled screw steel, the hanger forms a frame structure, and the finish-rolled screw steel is assembled with the section box girder and the hanger respectively through the preformed holes at the top of the section box girder and the perforations between the frame structures.
As a further improvement of the utility model, the first adjusting component and the second adjusting component each comprise a gasket and a nut, and the gaskets between the first adjusting component and the second adjusting component are arranged opposite to each other.
As a further improvement of the present utility model, the spacer is a steel plate having a thickness of not less than 30mm, and an outer surface portion of the steel plate is in contact with an outer surface of the nut.
As a further improvement of the present utility model, the nut is a ball nut in which a contact surface forms a guide surface to increase a force receiving area.
As a further improvement of the utility model, the suspension beam comprises two main beams which are arranged along the forward bridge direction, the two main beams are arranged in opposite directions, and the inner side of the main beam is vertically provided with a secondary beam.
As a further improvement of the utility model, the existing building is a bent cap, two secondary beams are respectively arranged above the two bent caps, and the secondary beam parts are overhung and arranged on the bent cap to form overhanging structures, and the hanging space is formed between the two overhanging structures.
As a further improvement of the utility model, the main beam is provided with a three-dimensional adjusting jack, and the three-dimensional adjusting jack supports the lifting appliance through a tray.
As a further improvement of the utility model, the tray forms a limiting cavity, and the width of the bearing surface of the limiting cavity is larger than that of the main girder on the lifting appliance.
Compared with the prior art, the utility model has the beneficial effects that:
the special lifting appliance is formed by processing sectional materials such as section steel, square pipes and the like according to a design drawing. The swing amplitude of the section box girder in the hoisting process can be reduced by connecting the section box girder with the section box girder through finish rolling deformed steel bars. Compared with the connection of slings such as steel wire ropes, iron chains and the like, the sling has higher stability, is safer and more reliable, and meets the requirements of safety management.
According to the utility model, the distance of the connecting piece is adjusted so as to disperse the unbalanced load force, ensure the safety in lifting, and cooperate with the suspension beam, so that the assembly of a scaffold and the like is avoided, the construction efficiency is improved, and the influence on the bottom building and the like is reduced.
The utility model designs a special lifting appliance for independent research and development in order to meet the erection requirement of the suspension beam, and the suspension beam and the special lifting appliance are matched for use. The construction efficiency is higher, and the accurate adjustment of the setting position of the segmental beam frame is more accurate.
The utility model has practicability. The design and processing of the professional lifting appliance gives consideration to the lifting and transferring of the section box girder in the prefabricated field, and simultaneously meets the use requirement of the hanging girder erection.
Drawings
FIG. 1 is a front view of a spreader for hanging beam erection of segmented box girders in accordance with the present utility model;
FIG. 2 is a top view of a spreader for erecting a segmented box girder from a suspension girder according to the present utility model;
FIG. 3 is a cross-sectional view of A-A of FIG. 1;
FIG. 4 is a cross-sectional view of B-B of FIG. 1;
FIG. 5 is an assembled view of the spreader and segmented box girder provided by the present utility model;
in the figure:
100. a suspension beam; 110. a main beam; 120. a secondary beam; 130. a three-dimensional adjusting jack; 140. a tray; 200. a lifting appliance; 210. a wire rope; 220. a connection assembly; 221. a connecting piece; 230. a first adjustment assembly; 240. lifting lugs; 300. a segmented box girder; 310. a second adjustment assembly; 400. a gasket; 500. a nut; 600. existing buildings.
Detailed Description
The present utility model will be described in detail below with reference to the embodiments shown in the drawings, but it should be understood that the embodiments are not limited to the present utility model, and functional, method, or structural equivalents and alternatives according to the embodiments are within the scope of protection of the present utility model by those skilled in the art.
In the description of the present embodiment, it should be understood that the directions or positional relationships indicated by the terms "upper", "lower", "top", "bottom", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience in describing the utility model and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the utility model.
The terms "mounted," "connected," "secured," "welded," and "welded" are to be construed broadly, and may be, for example, fixedly attached, detachably attached, or integrally attached; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the creation of the present utility model can be understood by those of ordinary skill in the art in a specific case.
Referring to fig. 1-5, a hanger for erecting a segmental box girder by using a suspension girder according to the present utility model is used for construction of a partial load segmental box girder, and comprises a suspension girder 100 suspended in the air, wherein the suspension girder 100 forms a suspension space, and the suspension girder 100 is positioned on an existing building 600; the suspension beam 100 is used to assemble a hanger or the like, and thus construction at a high place can be realized without adding a scaffold or the like. The lifting appliance 200 is positioned on the hanging beam, the top of the lifting appliance 200 is connected with a crane (not shown in the figure) through a steel wire rope 210, and the bottom of the lifting appliance is connected with a segmental box beam 300 through a connecting assembly 220; specifically, the connection assembly 220 includes a connection member 221 penetrating through the upper portion of the section box girder 300 and extending into the hanger 200, and the length of the connection member 221 extending into the hanger 200 is adjusted so that the stress on both sides of the section box girder is balanced; the first adjusting assembly 230 is located in the lifting appliance 200, and the first adjusting assembly 230 is used for adjusting the extending length of the connecting assembly 220 in the lifting appliance 200, and further adjusting the stress.
In the utility model, the hanging beam is higher by depending on the existing building, and then the hanging beam is used for assembling the hanging tool, so that the hanging tool or the hanging tool arranged at a high position can be used for lifting, and the like, thereby realizing low-cost high-altitude operation.
When the utility model is used, firstly, according to the unbalanced load direction, on one side with heavier structure and larger unbalanced load, a shorter connecting piece is selected, so that the distance between the lifting appliance and the section box girder is short, and the balance force adjustment during unbalanced load is realized. In the erection process, the lifting appliance 200 and the section box girder 300 are integrally lifted, at this time, the lifting appliance 200 and the hanging girder are fixedly arranged, and the top frame cross beam of the lifting appliance 200 is placed on a tray above the hanging girder, so that the hanging girder and the lifting appliance are not connected.
In one embodiment, the second adjusting assembly 310 is further included in the segment box girder 300, and an adjusting segment is formed between the first adjusting assembly 230 and the second adjusting assembly 310, so as to adjust the length of the adjusting segment to realize the stress balance of the unbalanced load segment box girder. At the moment, the distance is adjusted to enable the side with the heavy load to be short, so that the stress of the connecting piece side at the opposite side is increased, and further the balance of forces at two sides is realized.
In one embodiment, the connection 221 is a finish-rolled screw-thread steel, and the hanger 200 forms a frame structure, and the finish-rolled screw-thread steel is assembled with the section box girder 300 and the hanger 200 through a preformed hole at the top of the section box girder 300 and a perforation between the frame structures, respectively. The connecting piece is formed by the finish rolling deformed steel bar with high strength and convenient use, so that the connecting piece is convenient to be connected with a lifting appliance and a section box girder, and the lifting appliance 200 of the frame can adjust perforation, so that the insertion and the fixation of the finish rolling deformed steel bar are realized.
In one embodiment, the first adjustment assembly 230 and the second adjustment assembly 310 each include a washer 400 and a nut 500, and the washers 400 between the first adjustment assembly 230 and the second adjustment assembly 310 are disposed opposite each other. By adjusting the thickness of the spacer 400, the spreader or section box girder is brought closer towards the other, thereby facilitating the adjustment of the height of the connection, i.e. the adjustment of the distance between the spreader and the section box girder.
In one embodiment, the spacer 400 is selected from a steel plate having a thickness of not less than 30mm, and an outer surface portion of the steel plate is in contact with an outer surface of the nut 500. The steel plate is selected, the strength is high, the bearing capacity of the suspension beam, the lifting appliance and the section box beam can be borne, and the steel plate is only in partial contact, namely the contact surface of the nut is large, and the gasket can be borne.
In one embodiment, the nut 500 is a ball nut that forms a guide surface for increasing the bearing surface. The ball nut and the gasket 400 are tightly assembled and combined, the bearing area of the nut is increased, the bearing is better, and the service life is long. Specifically, the spherical nut surface is formed with a structure such as an arc, and can approach toward the pad plate.
In one embodiment, the suspension beam 100 includes two main beams 110 disposed along the forward bridge direction, the main beams 110 are disposed opposite to each other, and secondary beams 120 are disposed vertically outside the main beams 110. The secondary beams 120 on the outer sides can form limit and fold, so that the position of the hanger 200 on the suspension beam 100 in the height direction can be prevented from escaping once being deviated, and the safety is ensured.
In one embodiment, the existing building 600 is a capping beam, the two secondary beams 120 are respectively disposed on the capping beam, and the secondary beams 120 are partially overhanging and disposed on the capping beam to form overhanging structures, and the hanging space is formed between the overhanging structures on two sides of the capping beam. In this embodiment, the main beams 110 and the main beams 110 form a whole suspension space, and the main beams 110 can be supported, and the supported structure can be suspended between the main beams 110.
In one embodiment, the girder 110 is provided with a three-dimensional adjusting jack 130, and the three-dimensional adjusting jack 130 supports the hanger 200 through a tray 140. The three-dimensional adjusting jack 130 not only can support the lifting appliance 200 by using the pallet, but also can drive the pallet 140 and the lifting appliance 200 when performing three-dimensional position adjustment, thereby realizing three-dimensional position adjustment of the whole lifting appliance 200.
The suspension beam 100 is a steel structure frame, and is formed by connecting a main beam and a secondary beam, wherein the two secondary beams are arranged along the bridge direction, the secondary beams are vertical to the main beams, and the width between the outer edges of the two secondary beams is smaller than the width of the capping beam. The suspension beam is anchored on the cover beam, and a suspension space is formed at the space position between the two main beams overhanging the cover beam.
In one embodiment, the pallet 140 forms a spacing cavity having a bearing surface width greater than the width of the main beam on the spreader 200. In this embodiment, the tray has a U-shaped structure, and the width of the tray is slightly wider than the beam of the spreader 200, so that the special spreader can be placed on the tray, and the up-down, left-right, front-back positions of the section box beam 300 can be adjusted.
The application process of the utility model is as follows:
1) The lifting appliance 200 is processed in a factory to finish the transportation and supporting field (finished products), holes are formed on the primary and secondary beams at the bottom of the lifting appliance according to the positions (4) of lifting holes of the section box beams, and finish rolling screw thread steel and an upper anchoring gasket assembly are installed through the holes of the primary and secondary beams at the bottom;
2) The vertical finish rolled deformed steel bars (i.e., connectors 221) connected to the hanger 200 are reserved for hollows through the top of the segmented box girder 300;
3) Installing a vertical finish rolling screw steel lower gasket 400 and a spherical nut 500 in the inner cavity of the segmental box girder 300;
4) Before hoisting, carefully checking whether all the component parts are firmly connected according to requirements;
5) The segmented box girder 300 is hoisted and mounted in place over the suspension girder three-dimensional adjustment system pallet.
According to the utility model, the lifting appliance forms a steel structure frame, the vertical finish rolling threaded steel connection penetrating through the reserved holes on the top surface of the segmental box girder is adopted, the space between the reserved holes is obtained through design calculation, and the damage to the top surface of the girder caused by stress concentration or unbalanced load in the lifting process is avoided.
When the utility model is used, the lifting appliance and the section box girder are connected and anchored through the vertical finish rolling screw steel to form a whole. In the erection process, the lifting appliance and the section beam are integrally lifted. And after the position of the suspended beam is quickly closed, the top cross beam of the steel structure frame of the lifting appliance is slowly placed on the three-dimensional adjusting jack above the main beam of the suspended beam, so that the accurate adjustment of the position of the segmental beam is carried out.
According to the utility model, a full framing is not required to be erected, or an overhanging bracket is arranged on an pier column, but a suspension beam is directly erected on a bent cap, so that a lifting appliance linked with a section box beam is integrally lifted and then is arranged on the suspension beam, and the whole section box beam is conveniently adjusted after being erected and assembled at a high position after being erected on the suspension beam.
In this embodiment, in the prefabrication process of the section box girder 300, vertical top surface openings are reserved on the top plate according to design requirements (mutual distance and diameter) and used for installing finish rolling deformed steel bars in the lifting process. The finish rolled deformed steel bar (i.e., the connection member 221) passes through the segmental beam top plate, the anchor steel plate (i.e., the spacer 400) and the ball bolt (i.e., the nut) are installed at the lower end portion, and the upper end portion passes through the cross beam of the lifting sling 200 and the anchor steel plate and the ball bolt are installed. And connecting the section box girder with the lifting appliance by adopting high-strength finish-rolled deformed steel bars and an anchoring system. The top of the spreader 200 is provided with 4 lifting eyes 240 for a crane to lift the spreader and rest it on the pallet 140 of the three-dimensional adjustment system (i.e. the three-dimensional adjustment jack 130) of the suspension beam 100. After the lifting movement is completed, the finish rolling deformed steel bar can be taken out to be used as other section box girders for reuse, and the utilization efficiency is improved.
The special lifting appliance is manufactured by targeted design in order to meet the use requirement of the hanging beam for erecting the section box beam, and is characterized in that the three-dimensional steel frames are welded by using the section steels of different types to form a stable whole, so that deformation caused by the gravity influence of the section box beam in the lifting process is resisted; the section box girder is connected with the lifting appliance through finish rolling screw steel and spherical nuts, so that the lifting safety is improved; because the segment box Liang Shunqiao is not completely symmetrical in the left-right direction, the segment box Liang Pingwen is lifted by adjusting the length of the finish rolled deformed steel bar.
After the lifting appliance and the section box girder are integrally lifted, the top cross beam of the lifting appliance is placed on the tray of the three-dimensional adjusting system of the suspension girder, so that the section box girder can be accurately positioned. The design of the lifting appliance meets the use requirement of the suspension girder erection section box girder, and meanwhile, the use of flexible lifting appliances (steel wire ropes, iron chains and the like) is reduced.
The purpose of the utility model is that:
1) Considering that the sectional box girder has larger outline dimension and needs to consider the requirement of finished product protection, the common lifting appliance such as a steel wire rope, an iron chain, a lifting rope and a common span mode has obvious defects, or damages the lifting sling or damages the finished product sectional girder, and the special lifting sling is very necessary to design and process, thereby being beneficial to the use of the lifting sling and the protection of the finished product sectional box girder;
2) The lifting appliance is matched with the requirement of the suspension beam frame beam, is placed on a tray of a three-dimensional adjusting system at the top of the suspension beam, and can adjust the up-down, left-right, front-back positions of the section box beam until the design requirement is met;
the lifting appliance is formed by processing sectional materials such as section steel, square tubes and the like according to a design drawing. The swing amplitude of the section box girder in the hoisting process can be reduced by connecting the section box girder with the section box girder through finish rolling deformed steel bars. Compared with the connection of slings such as steel wire ropes, iron chains and the like, the sling has higher stability, is safer and more reliable, and meets the safety management requirements of singapore.
The utility model is characterized in that:
1) Safety. The lifting appliance is formed by processing sectional materials such as section steel, square tubes and the like according to a design drawing. The swing amplitude of the section box girder in the hoisting process can be reduced by connecting the section box girder with the section box girder through finish rolling deformed steel bars. Compared with the connection of slings such as steel wire ropes, iron chains and the like, the sling has higher stability, is safer and more reliable, and meets the safety management requirements of singapore.
2) Creative. In order to meet the erection requirement of the suspension beam, the lifting appliance is independently researched and developed, and the suspension beam and the lifting appliance are matched for use. The construction efficiency is higher, and the accurate adjustment of the setting position of the segmental beam frame is more accurate.
3) Practicality. The design and processing of the lifting appliance give consideration to the lifting and transferring of the section box girder in the prefabricated field, and simultaneously meets the use requirement of the hanging girder erection.
The above list of detailed descriptions is only specific to practical embodiments of the present utility model, and they are not intended to limit the scope of the present utility model, and all equivalent embodiments or modifications that do not depart from the spirit of the present utility model should be included in the scope of the present utility model.
It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present utility model may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.

Claims (10)

1. The lifting appliance for erecting the section box girder by the suspension girder is used for the construction of the partial load section box girder and is characterized by comprising the following components,
the suspension beam is suspended in the air, forms a suspension space, and is positioned on the existing building;
the lifting appliance is positioned on the hanging beam, the top of the lifting appliance is connected with a crane through a steel wire rope, and the bottom of the lifting appliance is connected with a section box beam through a connecting component;
the connecting component comprises a connecting piece which penetrates through the upper part of the section box girder and stretches into the lifting appliance, and the length of the connecting piece stretching into the lifting appliance is adjusted so that the stress on two sides of the unbalanced loading section box girder is balanced;
still including being located the first adjusting part of hoist, first adjusting part is used for adjusting the length of stretching into of coupling assembling in the hoist, and then adjusts the atress size.
2. The spreader for erecting a segmented box girder on a suspension girder of claim 1, further comprising a second adjustment assembly positioned within the segmented box girder, wherein an adjustment segment is formed between the first adjustment assembly and the second adjustment assembly, and wherein a length of the adjustment segment is adjusted to achieve a force balance of the unbalanced load segmented box girder.
3. The spreader for erecting a segmented box girder on a suspension girder according to claim 2, wherein the connection members are finish-rolled screw-threaded steel, the spreader forms a frame structure, and the finish-rolled screw-threaded steel is assembled with the segmented box girder and the spreader through a preformed hole at the top of the segmented box girder and a perforation between the frame structures, respectively.
4. The spreader for hanging beam erection of a segmented box girder of claim 1, wherein the first and second adjustment assemblies each comprise a spacer and a nut, and the spacers between the first and second adjustment assemblies are disposed in opposition.
5. The hanger for hanging beam erection of segmental box girders according to claim 4, wherein the spacer is selected from steel plates having a thickness of not less than 30mm, and an outer surface portion of the steel plates is in contact with an outer surface of the nut.
6. The spreader for hanging beam erection of segmental box girders of claim 5, wherein the nuts are ball nuts which form a guiding surface for increasing the bearing surface.
7. The spreader for erecting a segmented box girder on a suspension girder according to claim 1, wherein the suspension girder comprises two main girders arranged along a forward bridge direction, the main girders are arranged opposite to each other, and secondary girders are vertically arranged at inner sides of the main girders.
8. The spreader for erecting a segmented box girder on a suspended girder according to claim 7, wherein the existing building is a bent cap, two of the secondary girders are respectively disposed above the bent cap, and the secondary girders are partially overhanging and disposed on the bent cap to form overhanging structures, and the suspension space is formed between the two overhanging structures.
9. The spreader for hanging beam erection of segmental box girders according to claim 8, wherein three-dimensional adjusting jacks are provided on the main girders and the three-dimensional adjusting jacks support the spreader through pallets.
10. The spreader for hanging beam erection of segmental box girders according to claim 9, wherein the pallets form a spacing cavity, the width of the bearing surface of which is larger than the width of the girder on the spreader.
CN202321466448.3U 2023-06-08 2023-06-08 Lifting appliance for erecting section box girders by using suspension girders Active CN220056001U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202321466448.3U CN220056001U (en) 2023-06-08 2023-06-08 Lifting appliance for erecting section box girders by using suspension girders

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202321466448.3U CN220056001U (en) 2023-06-08 2023-06-08 Lifting appliance for erecting section box girders by using suspension girders

Publications (1)

Publication Number Publication Date
CN220056001U true CN220056001U (en) 2023-11-21

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Inventor after: Zhu Zhenhui

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Inventor after: Qi Youbao

Inventor after: Zhou Weikuan

Inventor after: Sun Sheng

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