CN211920697U - Full-prefabricated cover beam cross-line type erection gantry crane - Google Patents
Full-prefabricated cover beam cross-line type erection gantry crane Download PDFInfo
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- CN211920697U CN211920697U CN202020331809.3U CN202020331809U CN211920697U CN 211920697 U CN211920697 U CN 211920697U CN 202020331809 U CN202020331809 U CN 202020331809U CN 211920697 U CN211920697 U CN 211920697U
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Abstract
The utility model discloses a gantry crane for cross-line erection of a fully prefabricated cover beam, which comprises a main beam, wherein a first hoisting travelling mechanism and a second hoisting travelling mechanism which are meshed with a rack and pinion at the lower end of the main beam are hung below the main beam; lifting appliances are arranged at the lower ends of the first lifting travelling mechanism and the second lifting travelling mechanism, and folding support legs and fixed support legs are symmetrically arranged on the main beam in the front-back direction; the upper end flanges of the folding supporting legs and the fixed supporting legs are connected together, and the lower ends of the folding supporting legs and the fixed supporting legs are all arranged on the lower cross beam; the folding support leg comprises a saddle beam section which is connected with the fixed support leg through a flange, the lower end of the saddle beam section is connected with a folding component through a hinged shaft, a vertical upright post is arranged below the folding component, and a telescopic oil cylinder is arranged between the saddle beam section and the folding component; the upper end of the prefabricated capping beam is installed together with the lifting appliance, and the prefabricated capping beam pier is located between the folding supporting leg and the fixed supporting leg. The utility model discloses having removed the restriction to construction range and environment, having shortened the construction period that prefabricated bent cap erects and improved the efficiency of construction.
Description
Technical Field
The utility model relates to a hoist field especially relates to a portal crane is erect to full prefabricated bent cap strides line formula.
Background
The construction of bent cap traditionally uses the template to pour to give first place to, and this type of efficiency of construction is low, and is consuming time big. The long-time construction period such as the support, the template and the binding steel bar required by the cast-in-place construction affects the surrounding environment and traffic.
Compared with traditional cast-in-place, the prefabricated capping beam has higher efficiency and less time consumption. The construction period can be shortened, and the influence on the existing traffic is reduced. Traditional prefabricated bent cap erects and all uses truck crane or crawler crane cooperation to accomplish, but general urban rail transit is more complicated, and is big to the urban environment interference, and available operating range is limited, and its lifting hook is passive gyration form, is difficult to control when installing prefabricated bent cap mound piece, and dangerous higher and difficult to counterpoint guarantee the precision, and the hoist and mount expense is high.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a portal crane is erect to full prefabricated bent cap strides line formula, solves the hoist and mount problem of prefabricated bent cap installation.
In order to solve the technical problem, the utility model adopts the following technical scheme: the lifting travelling mechanism I and the lifting travelling mechanism II are hung below the main beam and are meshed and connected to the lower end of the main beam through a gear rack; lifting appliances are arranged at the lower ends of the first lifting travelling mechanism and the second lifting travelling mechanism, and folding support legs and fixed support legs are symmetrically arranged on the main beam front and back; the upper end flanges of the folding supporting legs and the fixed supporting legs are connected together, and the lower ends of the folding supporting legs and the fixed supporting legs are all arranged on the lower cross beam; the folding supporting legs comprise saddle beam sections which are connected with the fixed supporting legs through flanges, the lower ends of the saddle beam sections are connected with folding components through hinge shafts, vertical stand columns are arranged below the folding components, and telescopic oil cylinders are arranged between the saddle beam sections and the folding components; the upper end of the prefabricated capping beam is installed together with the lifting appliance, and the prefabricated capping beam pier is located between the folding supporting leg and the fixed supporting leg.
Furthermore, the two sides of the lower end of the lower cross beam are symmetrically provided with a walking cart mechanism.
Furthermore, the first hoisting travelling mechanism and the second hoisting travelling mechanism are connected with an electrical system; the electric system comprises a cab arranged on the fixed supporting leg, the cab is electrically connected with a power supply device, and the power supply device is electrically connected with a first hoisting travelling mechanism, a second hoisting travelling mechanism and a telescopic oil cylinder; the end of the main beam is provided with a limit switch, and the limit switch is electrically connected with a cab.
Furthermore, the lower ends of the folding supporting legs and the fixed supporting legs are connected with the lower cross beam through flanges.
Further, the lower cross beam is composed of box beams.
Furthermore, the hoisting system comprises a hoisting machine, a steel wire rope and a fixed pulley block; one end of the steel wire rope is fixed on a winding drum of the winch, and the other end of the steel wire rope is fixed on a winch frame after being sequentially wound on the movable pulley block and the fixed pulley block; the movable pulley block is connected with the lifting appliance.
Furthermore, the operation driving mechanism is arranged on the winch frame right below the main beam and comprises a speed reducing motor, the speed reducing motor is connected with a pinion in a key mode, and the pinion is meshed with a gearwheel; the middle part of the main beam lower cover plate is welded with a rack, and the large gear is meshed with the rack.
Furthermore, the lifting appliance comprises a movable pulley block, a box type lifting appliance, an adjusting oil cylinder and a pin shaft; the lower end of the movable pulley block is connected with the box-type lifting appliance through a hinge, the box-type lifting appliance is divided into an upper layer and a lower layer, the upper layer and the lower layer of the box-type lifting appliance are connected together through two adjusting oil cylinders, and the adjusting oil cylinders are symmetrically arranged; the upper layer and the lower layer of the box-type lifting appliance are connected through two symmetrically arranged pin shafts;
the hanging wheel sets are respectively arranged on the hoisting frame on the two sides of the main beam; the main beam comprises a box-shaped beam and box-shaped beam rails welded on two sides of the box-shaped beam, and the hanging wheel set travels along the box-shaped beam rails.
Compared with the prior art, the utility model discloses a beneficial technological effect:
the utility model discloses a full-prefabricated bent cap strides line formula and erects portal crane belongs to the special purpose equipment who erects full-prefabricated bent cap, and one of them, can safe effectual whole erect full-prefabricated bent cap, portal crane stride the line, and be segmentation single girder portal crane, connect by the flange plate between the girder segment, and the fastening is strong; secondly, two hoisting travelling crane mechanisms at two ends are hung on the track beams at two sides of the main beam, the hoisting travelling crane runs stably, the precision is high, the construction space and time limit is greatly broken through, the urban environment interference is reduced, the construction period is shortened, and the obvious trend of improving the construction efficiency of the prefabricated bent cap is achieved; fourthly, after erecting all pier blocks of the prefabricated bent cap, the folding support legs of the gantry crane smoothly pass through the erected bent cap through the telescopic and folding functions to move to the next pier, and the erection of the next prefabricated bent cap is carried out after resetting; fifthly, the traditional concept, the traditional method and the traditional technology of bent cap erection are broken through, the popularization and development of the prefabricated bent cap in the rail transit environment are adapted, the cast-in-place bent cap construction method and the special equipment which are small in construction range, poor in construction environment and limited in construction time are overcome, and a new direction and a new level of construction technology are developed for the construction of similar bridges. In a word, the utility model discloses full prefabricated bent cap strides line formula and erects portal crane and has removed the great restriction to the scope of construction and to the interference of urban environment, has shortened the construction period that prefabricated bent cap erects and has improved the efficiency of construction, the environment of erectting of prefabricated bent cap among the better adaptation urban rail transit to the new direction of construction technology has been opened up for the erectting of this type of bridge among the urban rail transit.
Drawings
The present invention will be further explained with reference to the following description of the drawings.
FIG. 1 is a front view of the gantry crane erected by fully prefabricated cover beams in a cross-line manner;
FIG. 2 is a side view of the gantry crane for cross-line erection of the fully prefabricated canopy beam;
FIG. 3 is a front view of a folded state of the gantry crane erected by the fully prefabricated cover beam in a cross-line manner;
FIG. 4 is a side view of a folded state of the gantry crane erected by the fully prefabricated cover beam in a cross-line manner;
FIG. 5 is a front view of the main beam and the hanging wheel set;
FIG. 6 is a side view of the main beam and the hanging wheel set;
FIG. 7 is a front view of the crane structure;
FIG. 8 is a side view of the crane structure;
FIG. 9 is a front view of a hoisting system of the crane mechanism;
FIG. 10 is a schematic view of a crane mechanism motion drive mechanism;
FIG. 11 is a front view of a lifting mechanism spreader;
FIG. 12 is a side view of a lifting mechanism spreader;
FIG. 13 is a front view of a folding leg;
FIG. 14 is a side view of a folding leg;
FIG. 15 is an enlarged partial view of the folding leg;
FIG. 16 is a schematic diagram of an electrical system;
description of reference numerals: 1. a main beam; 2. folding the support legs; 3. a first hoisting travelling mechanism; 4. a second hoisting travelling mechanism; 5. fixing the supporting legs; 6. an electrical system; 7. a lower cross beam; 8. a walking cart mechanism; 9. prefabricating a bent cap pier; 10. prefabricating a cover beam;
1-1, box beam; 1-2, box beam rail; 1-3, a rack;
2-1, a telescopic oil cylinder; 2-2, folding the assembly; 2-3, a hinged shaft; 2-4, saddle beam section; 2-5, vertical columns;
3-1, a hoisting system; 3-2, a motion driving mechanism; 3-3, hoisting the frame; 3-4, lifting appliances; 3-5, hanging wheel set. 3-1-1, a winch; 3-1-2, steel wire rope; 3-1-3, a fixed pulley group; 3-2-1, pinion; 3-2-2, a bull gear; 3-2-3, a speed reducing motor; 3-4-1, a movable pulley block; 3-4-2, a box type lifting appliance; 3-4-3, adjusting the oil cylinder; 3-4-4, a pin shaft;
6-1, a cab; 6-2, limit switches; 6-3 and a power supply device.
Detailed Description
As shown in fig. 1-6, the full-prefabricated bent cap cross-line type erection gantry crane comprises a main beam 1, wherein the main beam 1 consists of three sections of single box-shaped beams 1-1 with equal sections, and the lower ends of two sides of the box-shaped beams on two sides are welded with track box-shaped beams 1-2. A first lifting travelling mechanism 3 and a second lifting travelling mechanism 4 are hung below the main beam 1, and a cantilever structure at two sides is formed; and the first hoisting travelling mechanism 3 and the second hoisting travelling mechanism 4 are meshed and connected with the lower end of the main beam 1 through a gear and a rack. And the lower ends of the first lifting travelling mechanism 3 and the second lifting travelling mechanism 4 are both provided with lifting appliances.
As shown in fig. 6-12, the first lifting travelling mechanism 3 and the second lifting travelling mechanism 4 have the same structure, and both comprise a hoisting system 3-1, an operation driving mechanism 3-2, a hoisting frame 3-3, a lifting appliance 3-4 and a hanging wheel set 3-5.
The hoisting system 3-1 comprises a hoisting machine 3-1-1, a steel wire rope 3-1-2 and a fixed pulley block 3-1-3. One end of the steel wire rope 3-1-2 is fixed on a winding drum of the winch 3-1-1, and the other end of the steel wire rope is fixed on a winch frame 3-3 after sequentially winding the movable pulley block 3-4-1 and the fixed pulley block 3-1-3. The movable pulley block 3-4-1 is connected with the lifting appliance 3-4, and the lifting appliance 3-4 is lifted and lowered by rotating the winch 3-1-1.
The operation driving mechanism 3-2 is installed on a winch frame 3-3 right below the main beam 1, the operation driving mechanism 3-2 comprises a speed reducing motor 3-2-4, the speed reducing motor 3-2-4 is connected with a small gear 3-2-1 in a key mode, and the small gear 3-2-1 is meshed with a large gear 3-2-2. The middle of the lower cover plate of the main beam 1 is welded with a rack 1-3, and the large gear 3-2-2 is meshed with the rack 1-3. And when the gear motor 3-2-4 is driven, the pinion 3-2-1 drives the gearwheel 3-2-2, the gearwheel 3-2-1 drives the rack 1-3 to rotate, and the crane mechanism travels along the direction of the main beam 1.
The lifting appliance 3-4 comprises a movable pulley block 3-4-1, a box type lifting appliance 3-4-2, an adjusting oil cylinder 3-4-3 and a pin shaft 3-4-4. The lower end of the movable pulley block 3-4-1 is connected with the box-type lifting appliance 3-4-2 through a hinge, the box-type lifting appliance 3-4-2 is divided into an upper layer and a lower layer, the upper layer and the lower layer of the box-type lifting appliance 3-4-2 are connected together through two adjusting oil cylinders 3-4-3, and the adjusting oil cylinders 3-4-3 are symmetrically arranged. The upper layer and the lower layer of the box-type lifting appliance 3-4-2 are connected through two symmetrically-arranged pin shafts 3-4-4. One side of the two adjusting oil cylinders 3-4-3 extends, and the other side contracts, so that the lower layer of the box girder lifting appliance 3-4-2 can rotate around the pin shaft 3-4-4, and longitudinal adjustment is realized.
The hanging wheel sets 3-5 are respectively arranged on the hoisting frames 3-3 at the two sides of the main beam 1. The main beam 1 comprises a box-type beam 1-1 and box-type beam rails 1-2 welded on two sides of the box-type beam 1-1, and the hanging wheel sets 3-5 run along the box-type beam rails 1-2.
Folding supporting legs 2 and fixed supporting legs 5 are symmetrically arranged on the main beam 1 in the front-back direction. The upper ends of the folding supporting legs 2 and the fixed supporting legs 5 are connected together through flanges, the lower ends of the folding supporting legs and the fixed supporting legs are all arranged on a lower cross beam 7, and the lower cross beam 7 is composed of box-shaped beams. In this embodiment, the lower ends of the folding leg 2 and the fixed leg 5 are also connected with the lower cross beam 7 through flanges. And the two sides of the lower end of the lower cross beam 7 are symmetrically provided with a walking cart mechanism 8.
The traveling cart mechanism 8 can drive the full-prefabricated bent cap gantry crane to move along the beam erecting direction, and the purpose of erecting the prefabricated bent cap is achieved.
As shown in fig. 13-15, the folding leg 2 comprises a saddle beam section 2-4 flanged with the fixed leg 5, and the saddle beam section 2-4 is bolted with a double box girder connecting seat welded at two ends of the main girder. The lower end of the saddle beam section 2-4 is connected with a folding component 2-2 through a hinged shaft 2-3, a vertical upright column 2-5 is installed below the folding component 2-2, and a telescopic oil cylinder 2-1 is installed between the saddle beam section 2-4 and the folding component 2-2. When folding is needed, the telescopic oil cylinder 2-1 is started, the folding component 2-2 rotates by taking the hinge shaft 2-3 as a central shaft under the action of telescopic force until the folding component rotates to a proper position, and the telescopic oil cylinder 2-1 is closed.
As shown in fig. 16, the electrical system 6 includes a cab 6-1, a limit switch 6-2 and a power supply device 6-3. The cab 6-1 is connected with the fixed supporting legs 5 through bolts, and an operator is positioned in the cab 6-1 to safely and clearly control the lifting and alignment of the fully-prefabricated bent cap and the operation of the gantry crane. And the power supply device 6-3 is used for connecting a power supply to each operating mechanism of the gantry crane. The limit switch is positioned at the end of the main beam 1 and is a safety device of a gantry crane traveling mechanism I3 and a crane traveling mechanism II 4. The electric system 6 controls the lifting and descending of the first crane mechanism 3 and the second crane mechanism 4 and the operation along the direction of the main beam 1 through a control console in the cab 6-1, and also controls the operation of the whole gantry crane along the beam erecting direction and the extension and contraction of the telescopic oil cylinder 2-1.
In this embodiment, the fixed support leg 5 is composed of a vertical column and a saddle cross beam, and the vertical column and the saddle cross beam are connected by a flange; and the lower ends of the fixed legs 5 are connected with the lower cross beam 7 through flanges.
The upper end of the prefabricated capping beam 10 is installed together with the lifting appliance, and the prefabricated capping beam pier 9 is positioned between the folding supporting leg 2 and the fixed supporting leg 5.
The action process of the utility model is as follows:
firstly, the prefabricated bent cap pier section is hoisted by the hoisting travelling crane mechanism and is moved to the pier, so that the prefabricated bent cap pier section is installed in a contraposition mode.
Secondly, the pavement transport vehicle is perpendicular to the direction of the main beam, the prefabricated capping beam pier sections are transported to the position below the main beam, and then the prefabricated capping beam pier sections are lifted by the lifting appliance and then are lifted to the pier for alignment installation.
And finally, after the prefabricated bent cap pier top block is installed and aligned, the folding supporting legs shrink through a telescopic oil cylinder device connected to the folding supporting legs and are rotationally folded through a rotary hinged shaft. The folding supporting legs are higher than the highest surface of the cover beam. The full-prefabricated bent cap erection gantry crane can move to the next pier through the erected bent cap to perform continuous erection.
The above-mentioned embodiments are only intended to describe the preferred embodiments of the present invention, but not to limit the scope of the present invention, and those skilled in the art should also be able to make various modifications and improvements to the technical solution of the present invention without departing from the spirit of the present invention, and all such modifications and improvements are intended to fall within the scope of the present invention as defined in the appended claims.
Claims (9)
1. A gantry crane for cross-line erection of a fully-prefabricated cover beam comprises a main beam (1), wherein a first crane mechanism (3) and a second crane mechanism (4) are hung below the main beam (1), and the first crane mechanism (3) and the second crane mechanism (4) are meshed and connected to the lower end of the main beam (1) through a gear rack; hoisting crane constructs one (3) and hoisting crane constructs two (4) lower extreme and all is provided with hoist, its characterized in that: folding supporting legs (2) and fixed supporting legs (5) are symmetrically arranged on the front and the back of the main beam (1); the upper ends of the folding supporting legs (2) and the fixed supporting legs (5) are connected together through flanges, and the lower ends of the folding supporting legs and the fixed supporting legs are all arranged on the lower cross beam (7); the foldable support legs (2) comprise saddle beam sections (2-4) which are connected with the fixed support legs (5) through flanges, the lower ends of the saddle beam sections (2-4) are connected with foldable components (2-2) through hinge shafts (2-3), vertical upright posts (2-5) are arranged below the foldable components (2-2), and telescopic oil cylinders (2-1) are arranged between the saddle beam sections (2-4) and the foldable components (2-2); the upper end of the prefabricated capping beam (10) is installed together with the lifting appliance, and the prefabricated capping beam pier (9) is located between the folding supporting leg (2) and the fixed supporting leg (5).
2. The full-prefabricated cover beam cross-line type erection gantry crane according to claim 1, characterized in that: and two sides of the lower end of the lower cross beam (7) are symmetrically provided with a walking cart mechanism (8).
3. The full-prefabricated cover beam cross-line type erection gantry crane according to claim 1, characterized in that: the hoisting travelling mechanism I (3) is connected with an electrical system (6); the electric system (6) comprises a cab (6-1) arranged on the fixed supporting leg (5), the cab (6-1) is electrically connected with a power supply device (6-3), and the power supply device (6-3) is electrically connected with a crane mechanism I (3), a crane mechanism II (4) and a telescopic oil cylinder (2-1); the end of the main beam (1) is provided with a limit switch (6-2), and the limit switch (6-2) is electrically connected with a cab (6-1).
4. The full-prefabricated cover beam cross-line type erection gantry crane according to claim 1, characterized in that: the lower ends of the folding supporting legs (2) and the fixed supporting legs (5) are connected with the lower cross beam (7) through flanges.
5. The full-prefabricated cover beam cross-line type erection gantry crane according to claim 1, characterized in that: the lower cross beam (7) is composed of box-shaped beams.
6. The full-prefabricated cover beam cross-line type erection gantry crane according to claim 1, characterized in that: the hoisting travelling mechanism I (3) and the hoisting travelling mechanism II (4) are consistent in structure and respectively comprise a hoisting system (3-1), an operation driving mechanism (3-2), a hoisting frame (3-3), a lifting appliance (3-4) and a hanging wheel set (3-5), wherein the hoisting system (3-1) is installed on the hoisting frame (3-3) and is positioned on two sides of the main beam (1).
7. The full-prefabricated cover beam cross-line type erection gantry crane according to claim 6, wherein: the hoisting system (3-1) comprises a hoisting machine (3-1-1), a steel wire rope (3-1-2) and a fixed pulley block (3-1-3); one end of the steel wire rope (3-1-2) is fixed on a winding drum of the winch (3-1-1), and the other end of the steel wire rope is fixed on a winch frame (3-3) after being sequentially wound with the movable pulley block (3-4-1) and the fixed pulley block (3-1-3); the movable pulley block (3-4-1) is connected with the lifting appliance (3-4).
8. The full-prefabricated cover beam cross-line type erection gantry crane according to claim 6, wherein: the operation driving mechanism (3-2) is installed on a winch frame (3-3) right below the main beam (1), the operation driving mechanism (3-2) comprises a speed reducing motor (3-2-4), the speed reducing motor (3-2-4) is connected with a small gear (3-2-1) in a key mode, and the small gear (3-2-1) is meshed with a large gear (3-2-2); racks (1-3) are welded in the middle of the lower cover plate of the main beam (1), and the large gear (3-2-2) is meshed with the racks (1-3).
9. The full-prefabricated cover beam cross-line type erection gantry crane according to claim 6, wherein: the lifting appliance (3-4) comprises a movable pulley block (3-4-1), a box type lifting appliance (3-4-2), an adjusting oil cylinder (3-4-3) and a pin shaft (3-4-4); the lower end of the movable pulley block (3-4-1) is connected with the box-type lifting appliance (3-4-2) through a hinge, the box-type lifting appliance (3-4-2) is divided into an upper layer and a lower layer, the upper layer and the lower layer of the box-type lifting appliance (3-4-2) are connected together through two adjusting oil cylinders (3-4-3), and the adjusting oil cylinders (3-4-3) are symmetrically arranged; the upper layer and the lower layer of the box-type lifting appliance (3-4-2) are connected through two symmetrically arranged pin shafts (3-4-4);
the hanging wheel sets (3-5) are respectively arranged on the hoisting frames (3-3) on the two sides of the main beam (1); the main beam (1) comprises a box-type beam (1-1) and box-type beam rails (1-2) welded on two sides of the box-type beam (1-1), and the hanging wheel sets (3-5) travel along the box-type beam rails (1-2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020331809.3U CN211920697U (en) | 2020-03-17 | 2020-03-17 | Full-prefabricated cover beam cross-line type erection gantry crane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020331809.3U CN211920697U (en) | 2020-03-17 | 2020-03-17 | Full-prefabricated cover beam cross-line type erection gantry crane |
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| CN211920697U true CN211920697U (en) | 2020-11-13 |
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| CN202020331809.3U Active CN211920697U (en) | 2020-03-17 | 2020-03-17 | Full-prefabricated cover beam cross-line type erection gantry crane |
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| CN (1) | CN211920697U (en) |
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