CN113250089B - Steel bridge hoisting and positioning device for building engineering - Google Patents
Steel bridge hoisting and positioning device for building engineering Download PDFInfo
- Publication number
- CN113250089B CN113250089B CN202110550628.9A CN202110550628A CN113250089B CN 113250089 B CN113250089 B CN 113250089B CN 202110550628 A CN202110550628 A CN 202110550628A CN 113250089 B CN113250089 B CN 113250089B
- Authority
- CN
- China
- Prior art keywords
- guide
- installation
- hoisting
- steel bridge
- guide sleeve
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 19
- 239000010959 steel Substances 0.000 title claims abstract description 19
- 230000000712 assembly Effects 0.000 claims abstract description 7
- 238000000429 assembly Methods 0.000 claims abstract description 7
- 238000009434 installation Methods 0.000 claims description 40
- 238000010276 construction Methods 0.000 claims description 8
- 238000000034 method Methods 0.000 abstract description 6
- 238000009435 building construction Methods 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract description 4
- 238000010586 diagram Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 2
- 229910000639 Spring steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000010720 hydraulic oil Substances 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
- G08B21/18—Status alarms
Landscapes
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Load-Engaging Elements For Cranes (AREA)
- Conveying And Assembling Of Building Elements In Situ (AREA)
Abstract
The invention is suitable for the technical field of building construction equipment, and provides a hoisting and positioning device for a steel bridge in building engineering; the method comprises the following steps: the guide sleeve is internally provided with a mounting hole for inserting the bridge positioning rod; the linear array is arranged in the guide sleeve; wherein, the guide component comprises at least one group of guide components; the guide assembly comprises two guide wheels which are symmetrically arranged inside the guide sleeve, the two guide wheels are arranged inside the guide sleeve in a sliding mode, and the distance between the two guide wheels is constant. According to the invention, linkage is realized between the two guide wheels on the two guide assemblies, so that the distance between the two guide wheels is ensured, and a good guide effect is realized.
Description
Technical Field
The invention relates to the technical field of building construction equipment, in particular to a steel bridge hoisting and positioning device for building engineering.
Background
The building construction refers to the construction process of various buildings. The bridge needs to be hoisted and installed in the building construction process.
The positioning rods of the bridges need to be positioned in the hoisting process, and the deviation exists in the bridge manufacturing process, so that the falling points of the positioning rods on each bridge are deviated, and the positioning rods are difficult to be accurately positioned in the hoisting and positioning process in the prior art, and therefore the steel bridge hoisting and positioning device for the building engineering is designed to solve the technical problem.
Disclosure of Invention
The invention aims to provide a hoisting and positioning device for a steel bridge in building engineering, which aims to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme:
the utility model provides a steel bridge hoist and mount positioner for building engineering, includes: the guide sleeve is internally provided with a mounting hole for inserting the bridge positioning rod;
the linear array is arranged in the guide sleeve;
wherein, the guide component comprises at least one group of guide components; the guide assembly comprises two guide wheels which are symmetrically arranged inside the guide sleeve, the two guide wheels are arranged inside the guide sleeve in a sliding mode, and the distance between the two guide wheels is constant.
As a further scheme of the invention: both of the guide assemblies further comprise a mount; the guide wheels are arranged on the mounting piece in a left-right sliding mode.
As a still further scheme of the invention: the guide wheel is installed on the installation slide bar, one end of the installation slide bar is arranged in a medium cavity inside the installation piece in a left-right sliding mode, the medium cavity inside the installation piece is communicated, and the medium cavity is filled with the medium.
As a still further scheme of the invention: the two guide wheels are fixedly connected through a connecting rod, and the connecting rod is arranged inside the guide sleeve in a sliding mode.
As a still further scheme of the invention: and the surface of the mounting sliding rod is provided with a limiting structure.
As a still further scheme of the invention: the installation slide bar outside cover is equipped with the elastic component, the elastic component both ends respectively fixed mounting on installation slide bar and touch multitouch, touch multitouch can contradict on the locking piece, locking piece fixed mounting is on the elastic component.
As a still further scheme of the invention: and the guide assembly is provided with an overload protection mechanism for protecting the guide wheel.
As a still further scheme of the invention: the overload protection mechanism comprises first suction parts arranged at two ends of the locking block, the first suction parts at the two ends are respectively sucked on two second suction parts on the supporting part, the second suction parts are fixedly arranged on the supporting part, and the supporting part is fixedly arranged on the mounting part.
As a still further scheme of the invention: still be provided with the switch on the installed part, the switch setting is on the removal orbit of locking piece.
As a still further scheme of the invention: a plurality of the guide assembly is provided with a plurality of installation parts arranged on the same side and connected to the connecting piece, the installation parts are arranged in the installation groove inside the guide sleeve in a sliding mode, and the position of the connecting piece is adjustable and arranged on the guide sleeve.
Compared with the prior art, the invention has the beneficial effects that: according to the bridge guide rod, linkage is realized between the two guide wheels on the two guide assemblies, so that the distance between the two guide wheels is ensured, the problem that the bridge guide rod in the prior art has installation errors is solved, two sides of the guide rod are always attached to the guide wheels by ensuring the distance between the guide wheels, and a good guide effect is realized.
Drawings
Fig. 1 is a schematic structural diagram of a steel bridge hoisting and positioning device for building engineering.
FIG. 2 is a schematic structural diagram of a mounting member in a steel bridge hoisting and positioning device for construction engineering.
Fig. 3 is a schematic structural diagram of a guide sleeve in a steel bridge hoisting and positioning device for construction engineering.
In the figure: the device comprises a guide sleeve-1, a mounting piece-2, a medium cavity-3, a mounting groove-4, a limiting structure-6, a supporting piece-7, a switch-8, a guide wheel-9, a mounting slide rod-10, an elastic piece-12, a collision block-13, a locking block-14, a first absorbing piece-15, a second absorbing piece-16, a connecting piece-17, a fixing block-18, a rotating rod-19 and an alarm-20.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "first", "second", and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, in the description of the present invention, "a plurality" means two or more unless otherwise specified. A feature defined as "first," "second," etc. may explicitly or implicitly include one or more of the feature.
Example 1
Referring to fig. 1, in embodiment 1 of the present invention, a structure diagram of a steel bridge hoisting and positioning device for building engineering provided in the embodiment of the present invention includes: a guide sleeve 1 and a guide member; the guide sleeve 1 is internally provided with a mounting hole for inserting a bridge positioning rod; a plurality of guide members, which are arranged in a linear array inside the guide sleeve 1; wherein, the guide component comprises at least one group of guide components; the guide assembly comprises two guide wheels 9 symmetrically arranged inside the guide sleeve 1, the two guide wheels 9 are arranged inside the guide sleeve 1 in a sliding mode, and the distance between the two guide wheels 9 is constant. Two leading wheels 9 all are used for reciprocating the locating lever and fixing a position.
Referring to fig. 1-2, in particular, each of the two guide assemblies further includes a mounting member 2; the guide wheels 9 are arranged on the mounting part 2 in a left-right sliding mode, and the distance between the two guide wheels 9 on the mounting part 2 is constant. The guide wheel 9 is installed on an installation slide rod 10, one end of the installation slide rod 10 is arranged in a medium cavity 3 inside an installation part 2 in a left-right sliding mode, the two medium cavities 3 inside the installation part 2 are communicated, and the two medium cavities 3 are filled with media. The medium may be hydraulic oil or water.
As a preferred embodiment of the present invention, the two guide wheels 9 are fixedly connected through a connecting rod, and the connecting rod is slidably disposed inside the guide sleeve 1, so as to further ensure the distance between the two guide wheels 9, and meanwhile, the connecting rod is slidably disposed inside the guide sleeve 1, so as to be capable of adapting to the positions of different guide rods.
Specifically, when a positioning rod on a bridge is inserted into a guide sleeve 1, a plurality of guide wheels 9 on a guide part are used for positioning the positioning rod, and due to deviation in the bridge manufacturing process, each positioning rod inserted into the guide sleeve 1 has position deviation, medium cavities 3 inside two installation parts 2 arranged to the positioning rod are communicated, when the positioning rod is inserted into the guide sleeve 1, the guide wheel 9 on one side is extruded, so that an installation slide rod 10 on the guide wheel 9 slides towards the inside of the medium cavity 3, further, a medium in the medium cavity 3 on the side flows into the medium cavity 3 in the installation part 2 on the other side, so that the medium cavity 3 on the other side extrudes the installation slide rod 10, so that the installation slide rod 10 drives the guide wheel 9 on the other side to extend outwards, one of the guide wheels 9 on two sides moves inwards, and the other guide wheel moves outwards, thus the distance between the two guide wheels 9 is ensured, and then can make the leading wheel 9 homoenergetic of both sides contradict the locating lever on, and then guarantee the direction effect. According to the invention, linkage is realized between the two guide wheels 9 on the two guide assemblies, so that the distance between the two guide wheels 9 is ensured, and a good guide effect is realized.
Example 2
Referring to fig. 2-3, the main difference between the present embodiment 2 and the present embodiment 1 is that the medium chambers 3 of the two mounting members 2 can be communicated through a flow passage disposed inside the guide sleeve 1, and also can be communicated through a communication pipe disposed between the two medium chambers 3. This enables the media between the two media chambers 3 to be transferred to each other.
In order to limit the position of the installation slide bar 10 in the medium cavity 3, the surface of the installation slide bar 10 is provided with a limiting structure 6 for limiting the position of the installation slide bar 10 in the medium cavity, and the limiting structure 6 can be a bulge on the surface of the installation slide bar 10 or an outer circle installed outside the installation slide bar 10.
Referring to fig. 1, in order to achieve a certain elastic buffering effect during the guiding process, an elastic member 12 is sleeved outside the installation slide rod 10, two ends of the elastic member 12 are respectively and fixedly installed on the installation slide rod 10 and the abutting block 13, the abutting block 13 can abut against a lock block 14, and the lock block 14 is fixedly installed on the elastic member 12. Specifically, locking piece 14 sets up on the shift position of conflict piece 13, and when leading wheel 9 received the conflict of locating lever, make leading wheel 9 extrude to the inside of installed part 2, conflict piece 13 on the elastic component 12 is contradicted on locking piece 14, and then realizes the elastic shock attenuation.
The elastic member 12 may be a spring or spring steel.
As a preferred embodiment of the present invention, the guide assembly is provided with an overload protection mechanism in order to protect the guide wheel 9 from receiving a pressure exceeding the pressure that the guide wheel 9 can be loaded.
Specifically, the overload protection mechanism comprises first suction parts 15 arranged at two ends of a locking block 14, the first suction parts 15 at the two ends are respectively sucked on two second suction parts 16 on a support part 7, the second suction parts 16 are fixedly arranged on the support part 7, and the support part 7 is fixedly arranged on an installation part 2. Therefore, when the guide wheel 9 receives pressure, the pressure is transmitted to the installation sliding rod 10, the contact block 13 on the installation sliding rod 10 extrudes the locking block 14, and when the extrusion force exceeds the suction force between the first suction piece 15 and the second suction piece 16, the second suction piece 16 and the first suction piece 15 are separated, the installation sliding rod 10 moves towards the inside of the installation part 2, and the guide wheel 9 unloads the pressure. The second suction member 16 and the first suction member 15 are made of a magnet. The second suction piece 16 and the first suction piece 15 may also be provided as suction cups that attract each other.
In order to send out the overload signal in time, the mounting part 2 is also provided with a switch 8, the switch 8 is arranged on the moving track of the locking block 14, and when the locking block 14 is separated from the supporting part 7, the mounting slide rod 10 is touched, and the signal is sent out through the mounting slide rod 10.
Still be provided with alarm 20 on the uide bushing 1, alarm 20 is connected with switch 8 electricity, so and then can give alarm 20 with switch 8's signal transmission, and alarm 20 sends alarm signal, so in time stops hoist and mount location, in time protects uide bushing 1.
In order to send out the overload signal in time, a position sensor can be arranged on the mounting piece 2 and used for sensing the position of the locking block 14, and if the position of the locking block 14 is changed, the signal can be transmitted in time.
The overload protection mechanism can also be provided with a pressure sensor and an alarm device for the supporting position of the guide wheel 9, and the pressure sensor transmits a pressure signal to the alarm device. And stopping operation in time after the overload is found.
Adjust in order to realize the position of installed part 2 in uide bushing 1 inside, it is consequently a plurality of set up on the guide assembly and all connect on connecting piece 17 in a plurality of installed parts 2 with one side, installed part 2 slides and sets up in the inside mounting groove 4 of uide bushing 1, the adjustable setting in connecting piece 17 position is on uide bushing 1, so and once only carries out position control to a plurality of installed parts 2 for the distance between the leading wheel 9 on a plurality of installed parts 2 is adjusted, satisfies the location direction demand of the locating lever of different specifications.
In order to adjust the position of the connecting piece 17 relative to the guide sleeve 1, a rotating rod 19 is arranged on the connecting piece 17, the rotating rod 19 penetrates through a threaded hole in the connecting piece 17, one end of the rotating rod 19 is rotatably arranged on a fixing block 18, and the fixing block 18 is fixedly arranged on the guide sleeve 1. When the position of the mounting part 2 in the guide sleeve 1 needs to be adjusted, the rotating rod 19 is driven to rotate, and the rotating rod 19 enables the position of the connecting piece 17 to be changed, so that the position of the mounting part 2 in the guide sleeve 1 is changed.
As a preferred embodiment of the present invention, the connecting element 17 may also be arranged on the guide sleeve 1 by means of a hydraulic cylinder, thus enabling the position of the connecting element 17 to be adjusted.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention 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 description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (8)
1. The utility model provides a steel bridge hoist and mount positioner for building engineering which characterized in that includes: the guide sleeve is internally provided with a mounting hole for inserting the bridge positioning rod;
the linear array is arranged in the guide sleeve;
wherein, the guide component comprises at least one group of guide components; the guide assembly comprises two guide wheels symmetrically arranged in the guide sleeve, the two guide wheels are arranged in the guide sleeve in a sliding manner, and the distance between the two guide wheels is constant;
both of the guide assemblies further comprise a mount; the guide wheel is arranged on the mounting piece in a sliding manner; the guide wheel is installed on the installation slide bar, installation slide bar one end slides and sets up in the inside medium chamber of installed part, two the inside medium chamber intercommunication of installed part, two the medium intracavity portion is full of the medium.
2. The steel bridge hoisting and positioning device for the construction engineering as claimed in claim 1, wherein the two guide wheels are fixedly connected through a connecting rod, and the connecting rod is slidably arranged in the guide sleeve.
3. The steel bridge hoisting and positioning device for building engineering according to claim 1, wherein the surface of the installation sliding rod is provided with a limiting structure for limiting the position of the installation sliding rod in the medium cavity.
4. The device for hoisting and positioning the steel bridge and the bridge during the construction engineering as claimed in claim 1, wherein an elastic member is sleeved outside the installation slide bar, two ends of the elastic member are respectively and fixedly installed on the installation slide bar and the contact block, the contact block can be abutted against the lock block, and the lock block is fixedly installed on the elastic member.
5. The steel bridge hoisting and positioning device for the construction engineering as claimed in claim 3, wherein the guide assembly is provided with an overload protection mechanism for protecting the guide wheel.
6. The device for hoisting and positioning the steel bridge and the bridge for the construction engineering as claimed in claim 5, wherein the overload protection mechanism comprises first suction fittings arranged at two ends of the locking block, the first suction fittings at two ends are respectively sucked on two second suction members on the supporting member, the second suction members are fixedly arranged on the supporting member, and the supporting member is fixedly arranged on the mounting member.
7. The steel bridge hoisting and positioning device for the construction engineering as claimed in claim 6, wherein the mounting member is further provided with a switch, and the switch is arranged on a moving track of the lock block.
8. The device for hoisting and positioning the steel bridge and the bridge for the building engineering as claimed in any one of claims 3 to 7, wherein a plurality of installation members arranged on the same side of a plurality of guide assemblies are all connected to a connecting member, the installation members are slidably arranged in an installation groove in the guide sleeve, and the connecting member is adjustably arranged on the guide sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110550628.9A CN113250089B (en) | 2021-05-20 | 2021-05-20 | Steel bridge hoisting and positioning device for building engineering |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110550628.9A CN113250089B (en) | 2021-05-20 | 2021-05-20 | Steel bridge hoisting and positioning device for building engineering |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113250089A CN113250089A (en) | 2021-08-13 |
| CN113250089B true CN113250089B (en) | 2022-05-17 |
Family
ID=77182943
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110550628.9A Active CN113250089B (en) | 2021-05-20 | 2021-05-20 | Steel bridge hoisting and positioning device for building engineering |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113250089B (en) |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3331485B2 (en) * | 1994-09-29 | 2002-10-07 | 株式会社ジオトップ | Construction method of foundation pile and ring holder device for foundation pile construction |
| CN205114934U (en) * | 2015-11-17 | 2016-03-30 | 常春振 | Jacking device for civil engineering |
| CN107653885A (en) * | 2017-09-25 | 2018-02-02 | 李琼兵 | Vertically-guided structure is used in a kind of prefabricated tubular pile construction |
| CN110195435A (en) * | 2019-05-27 | 2019-09-03 | 中交第四航务工程局有限公司 | A kind of positioning device for pile foundation construction |
| CN212026255U (en) * | 2020-03-27 | 2020-11-27 | 建基建设集团有限公司 | Vertical guide structure for precast tubular pile construction |
| CN211973494U (en) * | 2020-04-16 | 2020-11-20 | 王彬 | Bridge construction is with piling guide structure under water |
-
2021
- 2021-05-20 CN CN202110550628.9A patent/CN113250089B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN113250089A (en) | 2021-08-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CA2807506C (en) | A pipeline insertion system | |
| CN113250089B (en) | Steel bridge hoisting and positioning device for building engineering | |
| CN102275160B (en) | Robot device and articulated robot | |
| CN111765338A (en) | Mechanical equipment mounting and supporting equipment with buffering function | |
| CN113772575A (en) | Pressure pipeline laying device for town gas engineering | |
| CN210116513U (en) | Waveguide pipe support that stability is high | |
| CN217254396U (en) | Slide block roller device for high-precision machining center | |
| CN112427995A (en) | Quick positioner of valve processing | |
| CN207961662U (en) | A kind of improved oil pressure bolt | |
| CN113500366B (en) | Positioning mechanism for lead sealing equipment of electric energy meter | |
| CN214663240U (en) | Infrared distance measurement pipeline installation centering instrument | |
| CN218863570U (en) | Polytetrafluoroethylene compensator | |
| CN117928466B (en) | Device and method for measuring deformation of well wall of well | |
| CN211309992U (en) | Transmission pipe support | |
| CN221838695U (en) | High-toughness quick-spliced aluminum profile | |
| CN218481048U (en) | Steel pipe straightness accuracy detection device for automobile transmission shaft | |
| CN115467314B (en) | Device and method for monitoring construction of deep foundation pit adjacent to existing railway | |
| CN211474760U (en) | Electronic control damper with good damping effect | |
| CN219484365U (en) | Accurate pipeline cutting machine for energy-saving construction | |
| CN218694831U (en) | Plasma cutting positioning device | |
| CN115752872A (en) | High-robustness gas pressure sensor | |
| CN103256041B (en) | Hole diameter instrument | |
| CN221503855U (en) | Viscous damper with monitoring function | |
| CN217502325U (en) | Linear guide rail pair with cooling function | |
| CN117006119B (en) | Multi-cylinder servo synchronous hydraulic device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: A Steel Bridge Lifting and Positioning Device for Construction Engineering Effective date of registration: 20230608 Granted publication date: 20220517 Pledgee: Zhejiang Zhuji Rural Commercial Bank Co.,Ltd. Pledgor: Zhejiang dalishen road and Bridge Construction Co.,Ltd. Registration number: Y2023980043210 |
|
| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Granted publication date: 20220517 Pledgee: Zhejiang Zhuji Rural Commercial Bank Co.,Ltd. Pledgor: Zhejiang dalishen road and Bridge Construction Co.,Ltd. Registration number: Y2023980043210 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: A steel bridge hoisting and positioning device for construction engineering Granted publication date: 20220517 Pledgee: Zhejiang Zhuji Rural Commercial Bank Co.,Ltd. Pledgor: Zhejiang dalishen road and Bridge Construction Co.,Ltd. Registration number: Y2024980027575 |