CN214116313U - Assembling device for cantilever of gantry crane - Google Patents
Assembling device for cantilever of gantry crane Download PDFInfo
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- CN214116313U CN214116313U CN202023091038.4U CN202023091038U CN214116313U CN 214116313 U CN214116313 U CN 214116313U CN 202023091038 U CN202023091038 U CN 202023091038U CN 214116313 U CN214116313 U CN 214116313U
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Abstract
The utility model discloses a device is assembled to portal crane cantilever for concatenation segment section precast prestressed concrete continuous beam highway bridge, the device include girder, gantry crane, driving hanging beam, support unit, a supporting beam, the both ends downside of girder sets up a supporting beam, every respectively supporting beam's lower extreme is connected with the support unit who erects subaerial, gantry crane spanes on the girder, the gantry crane downside slides and sets up the driving hanging beam. The utility model discloses reuse rate is high, has saved a large amount of cast-in-place supports, has reduced the influence to the surrounding environment, and comprehensive benefit is high, can realize that segment precast beam body and substructure are under construction simultaneously, has shortened bridge construction cycle greatly, and the operation is convenient, and technical requirement is low, construction convenience.
Description
Technical Field
The utility model belongs to road and bridge engineering field, concretely relates to device is assembled to portal crane cantilever.
Background
The sectional prefabricated cantilever assembling construction method is one construction method of dividing bridge into several sections, assembling in-situ bridge after prefabricating in factory or site and applying pre-stress to form integral structure. As a rapid and novel bridge construction method developed in recent years at home and abroad, a set of construction method with a perfect theoretical system and a mature construction technology is formed at present after exploration and summary of a large number of engineering practices and improvement and innovation of large-scale construction hoisting equipment.
With the rapid development of high-speed railway construction in China, the requirements on site construction conditions and track smoothness are higher and stricter, and in addition, the necessity of rapid bridge construction is higher and larger under the influence of construction cost and construction period; compared with other bridge construction methods, the segment prefabrication and assembly construction method has many advantages: on one hand, as the segments are prefabricated in a factory or on the spot, the linear precision is high, the maintenance is sufficient, the pouring quality can be effectively controlled, and the age of storing and placing the beams is longer, thereby being beneficial to reducing the influence of shrinkage and creep on the prestress loss and the linear shape; on the other hand, for large-scale projects with more sections, the equipment reuse rate is high, a large number of cast-in-place supports are saved, the influence on the surrounding environment is reduced, and the comprehensive benefit is high. In addition, due to the fact that segment prefabrication and a substructure can be simultaneously constructed, the construction period of the bridge is greatly shortened.
In view of the advantages, more and more highway bridges constructed by adopting the gantry crane to carry out the segmental prefabrication, assembly and cantilever construction method will be provided.
SUMMERY OF THE UTILITY MODEL
In view of this, the main object of the present invention is to provide a device for assembling a cantilever of a gantry crane.
In order to achieve the above purpose, the technical scheme of the utility model is realized like this:
the embodiment of the utility model provides a device is assembled to portal crane cantilever for concatenation segment section precast prestressed concrete continuous beam highway bridge, the device include girder, gantry crane, driving hanging beam, support unit, a supporting beam are set up respectively to the both ends downside of girder a supporting beam, every the lower extreme and the support unit who erects subaerial are connected, gantry crane spanes on the girder, the gantry crane downside slides and sets up the driving hanging beam.
In the scheme, the supporting unit comprises supporting legs, scissor supports, supporting leg cross beams and a walking cart, the supporting legs are arranged on two sides of the walking cart respectively, the two supporting legs are fixedly connected through the scissor supports and the supporting leg cross beams, the bottom of the walking cart is provided with a sleeper beam, and the top of the supporting leg cross beam is provided with a supporting beam.
In the scheme, the sleeper beam comprises a steel rail, a rib plate, I-shaped steel and a lower backing plate, the lower side of the lower backing plate is arranged on the existing concrete ground, the upper side of the lower backing plate is provided with a plurality of I-shaped steel and is fixed through the rib plate, the top of the plurality of I-shaped steel is provided with the steel rail, and the walking cart is connected with the steel rail in a matched mode.
In the above scheme, the supporting unit further comprises a lifting oil cylinder, the lifting oil cylinder is arranged on the supporting leg cross beam, and the output end of the lifting oil cylinder is connected with the lower end of the supporting beam 7.
In the above scheme, the device further comprises auxiliary locking mechanisms which are arranged on the front side and the rear side of the supporting unit and used for stabilizing the supporting unit during operation.
In the above scheme, supplementary locking mechanical system includes driver, flexible hydro-cylinder, stationary dog, accomodates the casing, accomodate one side of casing and set up the driver, the drive wheel on the driver is connected with the guide rail cooperation on the landing leg in the supporting element, flexible hydro-cylinder sets up in accomodating the casing and the output is connected with the stationary dog.
In the above scheme, the fixed claw comprises a straight rod, a first claw, a second claw and a return spring, one end of the straight rod is connected with the output end of the telescopic oil cylinder, the upper position and the lower position of the other end of the straight rod are respectively hinged with the first claw and the second claw, and the return spring is connected between the first claw and the second claw.
In the above scheme, the length of the first jaw is greater than that of the second jaw.
Compared with the prior art, the utility model discloses reuse rate is high, has saved a large amount of cast-in-place supports, has reduced the influence to the surrounding environment, and comprehensive benefit is high, can realize that the prefabricated girder body of festival section is under construction simultaneously with substructure, has shortened bridge construction cycle greatly, and convenient operation, technical requirement is low, construction convenience.
Drawings
Fig. 1 is a schematic structural view of a gantry crane cantilever assembling device provided in an embodiment of the present invention;
fig. 2 is a schematic structural view of a supporting unit in a gantry crane cantilever assembling device according to an embodiment of the present invention;
fig. 3 is a schematic structural view of a sleeper beam in a gantry crane cantilever assembling device provided in the embodiment of the present invention;
fig. 4 is a schematic structural view of an auxiliary locking mechanism in a gantry crane cantilever assembling device according to an embodiment of the present invention;
fig. 5 is the embodiment of the utility model provides a structural schematic diagram of stationary dog among device is assembled to portal crane cantilever.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and 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.
The embodiment of the utility model provides a device is assembled to portal crane cantilever for concatenation segmental precast prestressed concrete continuous beam highway bridge, as shown in fig. 1-3, the device includes girder 3, gantry crane 4, driving hanging beam 5, support element 6, a supporting beam 7, the both ends downside of girder 3 sets up a supporting beam 7, every respectively supporting beam 7's lower extreme is connected with the support element 6 who erects subaerial, gantry crane 4 spanes on girder 3, 4 downside slides and sets up driving hanging beam 5 of gantry crane.
The gantry crane 4 is provided with 2 main joists and 2 auxiliary joists to support the main beam 3, so that the connection stability of the main beam and the support system 6 is satisfied.
The traveling crane hanging beam 5 adopts 2 driving self-supporting traveling, consists of 2 lifting mechanisms, a pulley block, a steel wire rope and a lifting hook, and controls the transverse movement and lifting of the traveling crane hanging beam 5.
The supporting unit 6 comprises supporting legs 61, scissors supports 62, supporting leg cross beams 63 and a walking cart 64, the supporting legs 61 are arranged on two sides of the walking cart 64 respectively, the two supporting legs 61 are fixedly connected through the scissors supports 62 and the supporting leg cross beams 63, a sleeper beam 65 is arranged at the bottom of the walking cart 64, and supporting beams 7 are arranged at the tops of the supporting leg cross beams 63.
The supporting legs 61 are composed of main and auxiliary seamless steel tubes, pull rods, flange plates and the like and are used for supporting the joists and connecting the cart walking 10 assembly.
The sleeper beam 65 comprises steel rails 651, rib plates 652, I-beams 653 and a lower bolster 654, wherein the lower side of the lower bolster 654 is arranged on the existing concrete ground 655, the upper side of the lower bolster 654 is provided with a plurality of I-beams 653 and fixed through the rib plates 652, the tops of the plurality of I-beams 653 are provided with the steel rails 651, and the walking cart 64 is connected with the steel rails 651 in a matched mode.
The sleeper beams 65 are formed by welding 3-spliced 22A type I-shaped steel 653, the base plates 15 are arranged below the sleeper beams, the sleeper beams are arranged on the existing concrete pavement 16, local uneven parts of the ground are leveled by sand bags, the level of the sleeper beams 65 is guaranteed, the length of a single section of each sleeper beam 65 is 15m, the sleeper beams 65 are connected through bolts, 300m sleeper beams 65 are planned to be configured, and the sleeper beams are transported backwards in the splicing advancing direction of the section beams by a forklift.
The support unit 6 further comprises a lift cylinder 66, the lift cylinder 66 is arranged on the leg beam 63, and the output end is connected with the lower end of the support beam 7.
On one hand, the supporting beam 7 can be jacked up through the lifting oil cylinder 66, and meanwhile, the height of the main beam 3 is adjusted, and on the other hand, when construction is completed, the supporting beam 7 is lowered through the lifting oil cylinder 66, so that other components on the main beam 3 are convenient to detach.
Further, the apparatus further includes auxiliary locking mechanisms 8, the auxiliary locking mechanisms 8 being provided at both front and rear sides of the supporting unit 6 for stabilizing the supporting unit 6 at the time of work.
The auxiliary locking mechanism 8 comprises a driver 81, a telescopic oil cylinder 82, a fixed claw 83 and a storage shell 84, wherein the driver 81 is arranged on one side of the storage shell 84, a driving wheel on the driver 81 is matched and connected with a guide rail on the supporting leg 61 in the supporting unit 6, the telescopic oil cylinder 82 is arranged in the storage shell 84, and the output end of the telescopic oil cylinder is connected with the fixed claw 83.
The fixed claw 83 comprises a straight rod 831, a first claw 832, a second claw 833 and a return spring 834, one end of the straight rod 831 is connected with the output end of the telescopic oil cylinder 82, the upper position and the lower position of the other end of the straight rod 831 are respectively hinged with the first claw 832 and the second claw 833, and the return spring 834 is connected between the first claw 832 and the second claw 833.
The first finger 832 is longer than the second finger 833.
When the traveling crane 64 moves to the construction position, the actuator 81 moves along the rail to approach the existing concrete floor 655, and simultaneously, the output end of the telescopic cylinder 82 is ejected to eject the fixed claw 83 from the storage case 84, the first claw 832 and the second claw 833 are opened by the elastic force of the return spring 834, and then the longer first claw 832 and the shorter second claw 833 are respectively abutted on the existing concrete floor 655.
After the construction is completed, the actuator 81 moves along the track direction principle existing concrete ground 655, and simultaneously, the output end of the telescopic cylinder 82 retracts, the fixed claw 83 is gradually retracted into the accommodating shell 84, the first claw 832 and the second claw 833 gradually approach during the retraction process due to the limit of the accommodating shell 84, and the return spring 834 is compressed to the limit position.
The utility model discloses a concrete construction steps does: foundation construction, pier 1 → construction transportation segment box girder 2 → gantry crane 4 hoisting → three-way adjustment of travelling crane girder 5 (longitudinal, transverse and height) → splicing segment box girder 2 → inspection of upper and lower joints of two segments of segment box girder → tension prestressed beam → driving support system 6 forward → splicing the next segment.
The crane lifting beam 5 lifts a rated load, repeatedly lifts and lowers to brake for test run, then walks back and forth for n times, and reversely moves and starts, the brake, the limit switch and the electric operation of the mechanism are reliable, accurate and flexible, wheels do not slip, and the whole machine operates stably.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention.
Claims (8)
1. The utility model provides a device is assembled to portal crane cantilever for concatenation segment precast prestressed concrete continuous beam highway bridge, its characterized in that, the device include girder, gantry crane, driving hanging beam, supporting unit, a supporting beam, the both ends downside of girder sets up a supporting beam, every respectively supporting beam's lower extreme is connected with the supporting unit who erects subaerial, gantry crane spanes on the girder, the gantry crane downside slides and sets up the driving hanging beam.
2. The assembly device of the gantry crane cantilever as claimed in claim 1, wherein the supporting unit comprises supporting legs, scissor supports, a supporting leg cross beam and a walking cart, wherein the two sides of the walking cart are respectively provided with the supporting legs, the two supporting legs are fixedly connected through the scissor supports and the supporting leg cross beam, the bottom of the walking cart is provided with a sleeper beam, and the top of the supporting leg cross beam is provided with a supporting beam.
3. The assembly device of the gantry crane cantilever according to claim 2, wherein the sleeper beam comprises a steel rail, a rib plate, i-shaped steel and a lower backing plate, the lower side of the lower backing plate is arranged on the existing concrete ground, the upper side of the lower backing plate is provided with a plurality of i-shaped steel which are fixed through the rib plate, the top of the plurality of i-shaped steel is provided with the steel rail, and the traveling cart is connected with the steel rail in a matching manner.
4. The assembly device of a gantry crane cantilever according to claim 3, wherein the supporting unit further comprises a lift cylinder, the lift cylinder is disposed on the supporting leg beam, and the output end is connected with the lower end of the supporting beam 7.
5. The assembly device of a gantry crane cantilever according to any one of claims 1 to 4, further comprising auxiliary locking mechanisms provided at front and rear sides of the supporting unit for stabilizing the supporting unit during operation.
6. The assembly device of a gantry crane cantilever as claimed in claim 5, wherein the auxiliary locking mechanism comprises a driver, a telescopic cylinder, a fixed claw and a storage casing, the driver is arranged on one side of the storage casing, a driving wheel on the driver is connected with a guide rail on a support leg in the supporting unit in a matching manner, the telescopic cylinder is arranged in the storage casing, and the output end of the telescopic cylinder is connected with the fixed claw.
7. The assembling device for the cantilever of the gantry crane according to claim 6, wherein the fixed claw comprises a straight rod, a first claw, a second claw and a return spring, one end of the straight rod is connected with the output end of the telescopic cylinder, the upper and lower positions of the other end of the straight rod are respectively hinged with the first claw and the second claw, and the return spring is connected between the first claw and the second claw.
8. The gantry crane jib erection device of claim 7, wherein the first jaw is longer than the second jaw.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023091038.4U CN214116313U (en) | 2020-12-21 | 2020-12-21 | Assembling device for cantilever of gantry crane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023091038.4U CN214116313U (en) | 2020-12-21 | 2020-12-21 | Assembling device for cantilever of gantry crane |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214116313U true CN214116313U (en) | 2021-09-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023091038.4U Active CN214116313U (en) | 2020-12-21 | 2020-12-21 | Assembling device for cantilever of gantry crane |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214116313U (en) |
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2020
- 2020-12-21 CN CN202023091038.4U patent/CN214116313U/en active Active
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