CN212609016U - Precast box girder hoist - Google Patents
Precast box girder hoist Download PDFInfo
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- CN212609016U CN212609016U CN202021450619.XU CN202021450619U CN212609016U CN 212609016 U CN212609016 U CN 212609016U CN 202021450619 U CN202021450619 U CN 202021450619U CN 212609016 U CN212609016 U CN 212609016U
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- lifting
- box girder
- lifting appliance
- hoist
- mounting
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Abstract
The utility model discloses a precast box girder hoist, including hoist, lifting connection device, suspender, carry device and fixed cover. The spreader comprises a plurality of segments which are connected to splice out the spreader. The lifting connecting device is arranged in the middle of the lifting appliance, and the lifting belt is connected with the lifting connecting device. The hanging device is arranged on the lifting appliance, and the two ends of the lifting appliance are provided with the hanging devices. The fixed sleeve is arranged corresponding to the mounting device and is used for sleeving the prefabricated box girder, and the fixed sleeve is connected with the mounting device. Above-mentioned prefabricated box girder hoist adopts single portal crane to hoist, brings the potential safety hazard because the asynchronism when avoiding two traditional portal cranes to lift the hoist walking, and has reduced the interference to the prefabricated field when hoist and mount, can satisfy different grade type box girder hoist and mount, has avoided frequent change of hoist, has reduced intensity of labour and manufacturing cost.
Description
Technical Field
The utility model relates to a case roof beam hoist and mount technical field, concretely relates to prefabricated case roof beam hoist.
Background
In the construction of bridge engineering such as urban viaducts, highways, railways and the like, prefabricated box girders are often used. During construction of a precast yard, frequent hoisting operation of the precast box girder is required. The safety and the construction efficiency of the whole process must be ensured when the prefabricated box girder is hoisted, and the main box girder hoisting measures at the present stage comprise double gantry crane hoisting, a hydraulic hoist and the like.
When the double gantry cranes lift, due to the asynchronism, the safety risk is increased, and the interference of a prefabricated yard is caused to the greatest extent in the lifting process. When the hydraulic lifting appliance is used for lifting, the hydraulic lifting appliance can only lift a single type of box girder, and the adaptability is weak. And when the hydraulic lifting appliance is lifted, the box girder is lifted by utilizing a hydraulic transmission system and a motor for transmission, the power of the lifting appliance is generated by a generator arranged at a fixed position on the box girder, an energy storage device is arranged on a lifting appliance frame, an oil pump, a motor, a hydraulic cylinder, a valve and the like are arranged on the lifting appliance, and the hydraulic pipeline in the lifting appliance is more, so that the hydraulic lifting appliance is easy to generate faults of oil leakage of the hydraulic pipeline, breakage of the hydraulic pipe, air mixing in the system and the like when the hydraulic lifting appliance. Consequently adopt hydraulic lifting device hoist and mount, exist and can not hoist the case roof beam of different grade type, produce safe risk easily when needs frequently hoist and mount case roof beam simultaneously, the in-process can influence the efficiency of construction moreover.
SUMMERY OF THE UTILITY MODEL
Based on this, it is necessary to provide a precast box girder hoist to above-mentioned problem, can adopt single portal crane to hoist, satisfies the box girder hoist and mount of different grade type simultaneously.
A precast box girder spreader comprising:
the lifting appliance comprises a plurality of sections which are connected to splice out the lifting appliance;
the lifting connecting device is arranged in the middle of the lifting appliance;
the hanging strip is connected with the hoisting connecting device;
the hanging device is arranged on the lifting appliance, and the two ends of the lifting appliance are provided with the hanging device; and
the fixing sleeve is arranged corresponding to the mounting device and used for sleeving the prefabricated box girder, and the fixing sleeve is connected with the mounting device.
In one embodiment, two adjacent segments are connected by a connecting plate, and the connecting plate is fixed on the segments by bolts.
In one embodiment, a vertical stiffening plate and a horizontal stiffening plate are arranged in the segment, the vertical stiffening plate is arranged in the segment along the height direction of the lifting appliance, and the horizontal stiffening plate is arranged in the segment along the width direction of the lifting appliance.
In one embodiment, the lifting connection devices are arranged at intervals along the width direction of the lifting appliance, the lifting belts are correspondingly arranged in two numbers, the two lifting belts are respectively connected with the two lifting connection devices, and the two lifting belts are used for being connected with a gantry crane.
In one embodiment, the lifting connection device comprises a pair of lifting plates and a pin shaft, the pair of lifting plates are arranged on the lifting appliance at intervals, the lifting plates are provided with lifting connection holes, two ends of the pin shaft respectively penetrate through the two lifting connection holes, and the lifting belt is connected with the pin shaft.
In one embodiment, the mounting device comprises a mounting plate and two connecting assemblies, the mounting plate is arranged in the lifting appliance, the two connecting assemblies are arranged on the mounting plate, the two connecting assemblies are respectively positioned at two opposite sides of the lifting appliance, and the two connecting assemblies are respectively connected with two ends of the fixing sleeve.
In one embodiment, the connecting assembly comprises a pair of ear plates and a fixed shaft, the ear plates are arranged on the mounting plate at intervals, the ear plates are provided with mounting holes, two ends of the fixed shaft penetrate through the two mounting holes, and the end part of the fixed sleeve is connected with the fixed shaft.
In one embodiment, a protection plate is arranged between the fixing sleeve and the precast box girder.
In one embodiment, the harness is a steel wire rope.
In one embodiment, the two pairs of the mounting devices are provided, four mounting devices are arranged on the lifting appliance at intervals, and each pair of the mounting devices are symmetrically arranged around the lifting connecting device.
The prefabricated box girder lifting appliance at least has the following advantages:
the lifting connecting device is connected with a single gantry crane through a hanging strip, the lifting appliance is connected with the box girders through fixing sleeves according to the characteristics of the box girders of different types, and the two ends of the lifting appliance are provided with the carrying devices which are connected with the box girders through the fixing sleeves for lifting. Above-mentioned prefabricated box girder hoist adopts single portal crane to hoist, brings the potential safety hazard because the asynchronism when avoiding two traditional portal cranes to lift the hoist walking, and has reduced the interference to the prefabricated field when hoist and mount, can satisfy different grade type box girder hoist and mount, has avoided frequent change of hoist, has reduced intensity of labour and manufacturing cost.
Drawings
FIG. 1 is a schematic structural view of a precast box girder spreader according to an embodiment;
FIG. 2 is a cross-sectional view of the precast box girder spreader shown in FIG. 1;
FIG. 3 is a schematic structural view of the spreader of FIG. 1;
FIG. 4 is a top view of the spreader of FIG. 3;
FIG. 5 is a schematic structural view of the hoisting connection device in FIG. 1;
FIG. 6 is a left side view of the hitch of FIG. 5;
FIG. 7 is a schematic diagram of a pin configuration according to one embodiment;
FIG. 8 is a schematic structural view of the mounting device of FIG. 2;
FIG. 9 is a schematic structural view of the connecting assembly of FIG. 8;
fig. 10 is a schematic view of the ear plate of fig. 9.
Detailed Description
In order to make the above objects, features and advantages of the present invention more comprehensible, embodiments of the present invention are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The invention can be embodied in many other forms than those specifically described herein, and it will be apparent to those skilled in the art that similar modifications can be made without departing from the spirit and scope of the invention, and it is therefore not limited to the specific embodiments disclosed below.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.
Referring to fig. 1, a prefabricated box girder hanger according to an embodiment includes a hanger 10, a lifting connection device 20, a hanging strip 30, a carrying device 40, and a fixing sleeve 50.
Referring also to fig. 3, the spreader 10 includes a plurality of segments 12, and the segments 12 are connected to form the spreader 10 as a whole. The spreader 10 is formed from a plurality of segments 12 that are spliced together to facilitate transport and installation of the spreader 10. Meanwhile, the specification and size of the spreader 10 can be spliced out as required to adapt to precast box girders 100 of different sizes or types.
Referring to fig. 4, in one embodiment, two adjacent segments 12 are connected by a connecting plate 14, and the connecting plate 14 is fixed on the segments 12 by high-strength bolts, so as to splice a plurality of segments 12 into the integral spreader 10. The vertical stiffening plates 16 and the transverse stiffening plates 18 are arranged in the segments 12, the vertical stiffening plates 16 are arranged in the segments 12 along the height direction of the lifting appliance 10, and the transverse stiffening plates 18 are arranged in the segments 12 along the width direction of the lifting appliance 10. The vertical stiffening plates 16 and the transverse stiffening plates 18 can enhance the rigidity of the lifting appliance 10, and avoid bending deformation of the lifting appliance 10 caused by vertical load and transverse load.
Referring to fig. 2 and 5, a lifting connector 20 is disposed at the middle of the lifting appliance 10, a hanging strip 30 is connected to the lifting connector 20, and the hanging strip 30 is used to connect to a gantry crane 200. In one embodiment, the number of the hoisting connection devices 20 is two, two hoisting connection devices 20 are arranged at intervals along the width direction of the lifting appliance 10, two lifting straps 30 are correspondingly arranged, the two lifting straps 30 are respectively connected with the two hoisting connection devices 20, and the two lifting straps 30 are used for being connected with the gantry crane 200. The two lifting connecting devices 20 and the two lifting straps 30 are arranged, so that the lifting stability of the lifting appliance 10 can be ensured, a double protection effect can be achieved, and when one lifting strap 30 is damaged, the other lifting strap can still be used for lifting.
Referring to fig. 6 and 7, in particular, the lifting connection device 20 includes a pair of hanging plates 22 and a pin 24, the hanging plates 22 are disposed in the middle of the lifting device 10, and the pair of hanging plates 22 are disposed on the lifting device 10 at intervals. The hanging plate 22 is provided with lifting connection holes 222, two ends of the pin shaft 24 are respectively arranged in the two lifting connection holes 222 in a penetrating way, and the hanging strip 30 is connected with the pin shaft 24. The harness 30 is used to connect with the hook 210 of the gantry crane 200. It is understood that in other embodiments, the lifting connection device 20 can have other configurations, such as hooks, latches, and the like.
Referring to fig. 1 to 3, the loading device 40 is disposed on the lifting device 10, and the loading device 40 is disposed at both ends of the lifting device 10. In one embodiment, there are two pairs of mounting devices 40, four mounting devices 40 are spaced apart on the spreader 10, and each pair of mounting devices 40 is symmetrically arranged with respect to the lifting connection device 20. One pair of the mounting devices 40 is symmetrically disposed at two ends of the spreader 10, and the other pair of the mounting devices 40 is symmetrically disposed at a middle position of the spreader 10.
The fixing sleeve 50 is arranged corresponding to the mounting device 40, the fixing sleeve 50 is used for sleeving the prefabricated box girder 100, and the fixing sleeve 50 is connected with the mounting device 40. Wherein, before lifting by crane precast box roof beam 100, make hoist 10 closely laminate with precast box roof beam 100's top, take place the slope slippage when preventing to adopt fixed cover 50 to hold in the palm the hoist and mount. A protection plate 60 is arranged between the fixing sleeve 50 and the precast box girder 100, and the protection plate 60 can protect the precast box girder 100 and prevent the precast box girder 100 from being damaged and worn by the fixing sleeve 50. Specifically, a protective plate 60 and a rubber plate.
Referring to fig. 8, in one embodiment, the mounting device 40 includes a mounting plate 42 and two connecting members 44, the mounting plate 42 is disposed in the spreader 10, the two connecting members 44 are mounted on the mounting plate 42, and the two connecting members are respectively located at two opposite sides of the spreader 10. The two coupling assemblies 44 are coupled to both ends of the fixing sleeve 50, respectively.
Referring to fig. 9 and 10, in particular, the connecting assembly 44 includes a pair of ear plates 442 and a fixing shaft 444, the pair of ear plates 442 are disposed on the mounting plate 42 at intervals, the ear plates 442 are provided with mounting holes 442a, two ends of the fixing shaft 444 penetrate through the two mounting holes 442a, and an end of the fixing sleeve 50 is connected to the fixing shaft 444 to connect the end of the fixing sleeve 50 to the mounting device 40. The fixing sleeve 50 can be a steel wire rope, and the fixing sleeve 50 can also be a U-shaped steel sheet as long as the prefabricated box girder 100 can be sleeved and connected with the mounting device 40.
On the basis of the above embodiment, further, the connection assembly 44 further includes a top plate 446, the top plate 446 is mounted on the mounting plate 42, and the top plate 446 is connected with the ends of the two ear plates 442. The attachment assembly 44 further includes a reinforcement plate 448, the reinforcement plate 448 being attached to the middle of the two ear plates 442, and the reinforcement plate 448 being attached to the mounting plate 42. The top plate 446 and the reinforcing plate 448 can ensure that the ear plate 442 is connected to the mounting plate 42, and prevent the ear plate 442 from being separated from the mounting plate 42 due to tension. At the same time, the top plate 446 and the reinforcing plate 448 can support the two lug plates 442, preventing the lug plates 442 from being deformed in tension.
It will be appreciated that in other embodiments, the mounting device 40 may have other configurations, such as hooks, snaps, etc., as long as it is capable of securing the end of the pouch 50.
The prefabricated box girder lifting appliance at least has the following advantages:
1. the precast box girder lifting appliance is simple in structure, safe, reliable, small in mass, low in manufacturing cost, fast in construction and high in efficiency.
2. The single gantry crane 200 is adopted for hoisting, potential safety hazards caused by asynchronism when two conventional gantry cranes 200 are hoisted and run are avoided, and interference to a prefabrication yard during hoisting is reduced.
3. The prefabricated box girder lifting tool has strong adaptability, can meet the lifting requirements of different types of prefabricated box girders 100, avoids frequent replacement of the lifting tool 10, and reduces labor intensity and production cost.
4. The box girder is hoisted by adopting a fixed hoisting point method, so that the artificial detection deviation and the improper operation command are avoided, and the safety risk is low.
5. Compact structure is reasonable, and make full use of space reduces hoist 10 height, effectively reduces the wind load, improves equipment security.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.
Claims (10)
1. A precast box girder spreader, comprising:
the lifting appliance comprises a plurality of sections which are connected to splice out the lifting appliance;
the lifting connecting device is arranged in the middle of the lifting appliance;
the hanging strip is connected with the hoisting connecting device;
the hanging device is arranged on the lifting appliance, and the two ends of the lifting appliance are provided with the hanging device; and
the fixing sleeve is arranged corresponding to the mounting device and used for sleeving the prefabricated box girder, and the fixing sleeve is connected with the mounting device.
2. The precast box girder spreader according to claim 1, wherein adjacent two of the segments are connected by a connection plate, and the connection plate is fixed to the segments by bolts.
3. The precast box girder spreader according to claim 1, wherein vertical stiffening plates and horizontal stiffening plates are provided in the segments, the vertical stiffening plates are provided in the segments in a height direction of the spreader, and the horizontal stiffening plates are provided in the segments in a width direction of the spreader.
4. The precast box girder lifting appliance according to claim 1, wherein two lifting connection devices are arranged at intervals along the width direction of the lifting appliance, two lifting straps are correspondingly arranged, the two lifting straps are respectively connected with the two lifting connection devices, and the two lifting straps are used for being connected with a gantry crane.
5. The precast box girder lifting appliance according to claim 4, wherein the lifting connection device comprises a pair of lifting plates and a pin shaft, the pair of lifting plates are arranged on the lifting appliance at intervals, the lifting plates are provided with lifting connection holes, two ends of the pin shaft respectively penetrate through the two lifting connection holes, and the lifting belt is connected with the pin shaft.
6. The precast box girder lifting appliance according to claim 1, wherein the mounting device comprises a mounting plate and two connecting members, the mounting plate is disposed in the lifting appliance, the two connecting members are mounted on the mounting plate, the two connecting members are respectively located at two opposite sides of the lifting appliance, and the two connecting members are respectively connected to two ends of the fixing sleeve.
7. The precast box girder lifting appliance according to claim 6, wherein the connecting assembly comprises a pair of ear plates and a fixed shaft, the pair of ear plates are arranged on the mounting plate at intervals, the ear plates are provided with mounting holes, two ends of the fixed shaft penetrate through the two mounting holes, and the end of the fixed sleeve is connected with the fixed shaft.
8. The precast box girder spreader according to claim 1, wherein a protection plate is provided between the fixing sheath and the precast box girder.
9. The precast box girder spreader according to claim 1, wherein the fixing sheath is a wire rope.
10. The precast box girder lifting appliance according to claim 1, wherein the mounting devices are provided in two pairs, four mounting devices are arranged on the lifting appliance at intervals, and each pair of the mounting devices are symmetrically arranged with respect to the lifting connection device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021450619.XU CN212609016U (en) | 2020-07-21 | 2020-07-21 | Precast box girder hoist |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021450619.XU CN212609016U (en) | 2020-07-21 | 2020-07-21 | Precast box girder hoist |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212609016U true CN212609016U (en) | 2021-02-26 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021450619.XU Active CN212609016U (en) | 2020-07-21 | 2020-07-21 | Precast box girder hoist |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212609016U (en) |
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2020
- 2020-07-21 CN CN202021450619.XU patent/CN212609016U/en active Active
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