CN114560410B - Hoisting mechanism for building large-span steel box girder and method thereof - Google Patents
Hoisting mechanism for building large-span steel box girder and method thereof Download PDFInfo
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- CN114560410B CN114560410B CN202210182122.1A CN202210182122A CN114560410B CN 114560410 B CN114560410 B CN 114560410B CN 202210182122 A CN202210182122 A CN 202210182122A CN 114560410 B CN114560410 B CN 114560410B
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 236
- 239000010959 steel Substances 0.000 title claims abstract description 236
- 230000007246 mechanism Effects 0.000 title claims abstract description 71
- 238000000034 method Methods 0.000 title abstract description 5
- 239000000725 suspension Substances 0.000 claims abstract description 21
- 238000010276 construction Methods 0.000 claims abstract description 5
- 230000000712 assembly Effects 0.000 claims description 6
- 238000000429 assembly Methods 0.000 claims description 6
- 238000004804 winding Methods 0.000 description 17
- 239000000969 carrier Substances 0.000 description 5
- 244000309464 bull Species 0.000 description 4
- 125000006850 spacer group Chemical group 0.000 description 4
- 230000002035 prolonged effect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000003028 elevating effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009435 building construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
- B66D1/00—Rope, cable, or chain winding mechanisms; Capstans
- B66D1/02—Driving gear
- B66D1/12—Driving gear incorporating electric motors
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C1/00—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles
- B66C1/10—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by mechanical means
- B66C1/12—Slings comprising chains, wires, ropes, or bands; Nets
- B66C1/14—Slings with hooks
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C17/00—Overhead travelling cranes comprising one or more substantially horizontal girders the ends of which are directly supported by wheels or rollers running on tracks carried by spaced supports
- B66C17/06—Overhead travelling cranes comprising one or more substantially horizontal girders the ends of which are directly supported by wheels or rollers running on tracks carried by spaced supports specially adapted for particular purposes, e.g. in foundries, forges; combined with auxiliary apparatus serving particular purposes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
- B66D1/00—Rope, cable, or chain winding mechanisms; Capstans
- B66D1/28—Other constructional details
- B66D1/30—Rope, cable, or chain drums or barrels
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
- B66D1/00—Rope, cable, or chain winding mechanisms; Capstans
- B66D1/28—Other constructional details
- B66D1/36—Guiding, or otherwise ensuring winding in an orderly manner, of ropes, cables, or chains
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
- B66D1/00—Rope, cable, or chain winding mechanisms; Capstans
- B66D1/54—Safety gear
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Carriers, Traveling Bodies, And Overhead Traveling Cranes (AREA)
Abstract
The invention relates to the field of bridge construction, in particular to a hoisting mechanism for large-span steel box girder construction and a method thereof, comprising a hoisting mechanism, a limiting mechanism, a hoisting mechanism and two groups of driving mechanisms, wherein the hoisting mechanism consists of a bearing column and a suspension arm, one end of the suspension arm is hinged to the top of the bearing column, two groups of carrying seats are symmetrically and fixedly arranged on one side of the top of the suspension arm, two groups of driving mechanisms are symmetrically arranged on the two groups of carrying seats, each group of driving mechanism comprises a rotating assembly and a driving assembly, the limiting mechanism comprises a guide assembly and a carrying assembly, and the hoisting mechanism comprises a double-wheel assembly and a single-wheel assembly.
Description
Technical Field
The invention relates to the field of bridge construction, in particular to a hoisting mechanism for constructing a large-span steel box girder and a method thereof.
Background
The steel box girder, called steel plate box girder, is a common structural form of a large span bridge, in a large span cable supporting bridge, the span of the steel box girder reaches hundreds of meters and reaches thousands of meters, and is generally manufactured and installed in a plurality of girder sections, the cross section of the steel box girder has the characteristics of wide width and flat appearance, and the aspect ratio reaches 1: about 10, the steel box girder is generally formed by connecting a top plate, a bottom plate, a web plate, a diaphragm plate, a longitudinal diaphragm plate, stiffening ribs and the like in an all-welded mode, wherein the top plate is an orthotropic bridge deck formed by a cover plate and the longitudinal stiffening ribs.
In bridge construction, steel box girders are more and more widely applied, when the steel box girders are hoisted, besides the balance is a major importance, the bearing and hoisting force brought by the steel box girders is quite important, besides the hydraulic hoisting applied at present, the dead weight of the steel box girders used for the large-span bridge is bigger, hidden danger exists gradually when a hoisting motor and a variable-frequency speed-regulating motor are matched with the traditional pulley block connection mode, the service life is reduced, and a hoisting mechanism capable of reducing the potential safety hazard brought by overload and impact is necessary to be designed under the condition of better protecting the traditional hoisting wound motors.
Chinese patent application number: cn202111018838.X; publication date: 2021.12.03 discloses a steel box girder lifting device for building construction, which belongs to the technical field of steel box girder lifting, and comprises: the upper ends of the four supporting legs are fixedly connected with a supporting frame; the translation mechanism comprises a driving assembly and two groups of sliding assemblies, the translation mechanism is arranged at the upper end of the supporting frame, the two groups of sliding assemblies are composed of a guide rail, a fixed frame and two first pulleys, the guide rail is fixedly connected to the upper end of the supporting frame, the two first pulleys are fixedly connected to the upper end of the guide rail in a sliding clamping mode, the fixed frame is fixedly connected to the two ends of the two first pulleys, the two groups of sliding assemblies are respectively arranged at the two parts of the supporting frame, and a first rotating rod is fixedly connected between the two first pulleys located at the front side.
The structure of the invention has the following defects:
1. The device through starting the second motor, first winding wheel twines the winding rope, because the other end of winding rope is fixed rope fixed connection in the one end of first fixed block, the winding rope overlaps respectively and establishes at the circumference surface of second winding wheel, fourth winding wheel and third winding wheel, thereby make the high promotion of hanging buckle, otherwise then descend, it is twined through the first winding rope of second motor drive, and the first winding rope is close to the circumference surface of itself drive second winding wheel, fourth winding wheel and third winding wheel, make the high promotion of hanging buckle, this can cause very big tensile stress to first winding rope, use existence potential safety hazard, and life has been reduced, only in the theory, it is actually not preferable.
2. The device start first motor, first dwang drives two sets of slip subassemblies and slides in the upper end of two guide rails respectively afterwards for fix first mount and the translation of second mount in two fixed frame upper ends, thereby make fixed connection take place the displacement at the elevating system of first mount upper end, thereby remove different positions and height with the steel case, behind the drive of first motor drive bevel gear group, bevel gear group drives whole elevating system and steel case roof beam through first dwang and translates, do not accord with practical application.
According to the deficiencies of the prior art: it is necessary to design a hoisting mechanism for constructing a large-span steel box girder.
Disclosure of Invention
The invention aims to provide a hoisting mechanism for building a large-span steel box girder.
To achieve the purpose, the invention adopts the following technical scheme:
the utility model provides a large-span steel case roof beam is built with hoist mechanism, includes hoisting mechanism, stop gear, hoist mechanism and two sets of actuating mechanism, hoisting mechanism comprises loading post and davit, the one end of davit articulates in the top of loading post, the top one side symmetry of davit is equipped with two sets of carrier seats fixedly, two sets of actuating mechanism symmetry sets up on two sets of carrier seats, every group actuating mechanism includes rotating assembly and actuating unit, rotating assembly is fixed to be set up in two sets of carrier seats top, actuating unit is fixed to be set up in one side of rotating assembly, stop gear includes guiding component and carries on the subassembly, guiding component is fixed to be set up in the other end of davit, the bottom lateral part that carries on the subassembly is fixed to be set up in guiding component, hoist mechanism includes double round subassembly and single round subassembly, single round subassembly articulates in the tip of two sets of actuating mechanism, single round subassembly articulates in the bottom of double round subassembly, and single round subassembly's one end is fixed to be set up in the stop gear bottom.
Further, the top one side symmetry of loading post is fixed and is equipped with two sets of first articulated steel sheets, every group all articulate on the first articulated steel sheet has the pneumatic cylinder, every the output of first pneumatic cylinder all articulates has the second articulated steel sheet, two the second articulated steel sheet symmetry is fixed to be set up in davit bottom one side.
Further, two sets of fixed crossbeam that is equipped with in carrier top middle part, every group rotating assembly includes steel roller, bull stick, first steel cable, second steel cable, spacer ring, two sets of gag lever post and two backup pads, two the backup pad symmetry sets up in crossbeam top both sides fixedly, the bull stick rotates to set up between two backup pads, the steel roller is fixed to be set up on the bull stick, the spacer ring is fixed to be set up in the steel roller middle part, first steel cable and second steel cable symmetry are around locating on the steel roller and be located the spacer ring both sides, two sets of gag lever post symmetry and fixed set up between two backup pads, and two sets of gag lever post symmetries set up in the upper and lower both sides of steel roller.
Further, the bottom middle part of crossbeam is equipped with the mounting groove, the mounting groove internal fixation is equipped with two guide arms, two the guide arm is the symmetry setting, and the tip of two sets of guide arms is all rotated and is equipped with first guide pulley, the one end of first steel cable and second steel cable cup joints the setting with two first guide pulleys respectively, and the one end of first steel cable and second steel cable is right angle form and extends to davit top one end.
Further, the drive assembly includes frame, motor, first gear, second gear and safety cover, the frame is fixed to be set up in the davit top and be located the steel roll side, the safety cover is fixed to be set up in corresponding backup pad one side, the motor is the fixed setting of horizontality on the frame, and the output shaft of motor passes corresponding backup pad and first gear fixed connection, the second gear is fixed to be set up in the one end of bull stick, and second gear and first gear engagement setting, first gear and second gear all are located the safety cover.
Further, the guide assembly comprises a steel frame table, two vertical plates, two limiting columns and two groups of guide frames, wherein the steel frame table is fixedly arranged at one end of the suspension arm, the two vertical plates are symmetrically and fixedly arranged at the top of the steel frame table, the two limiting columns are vertically symmetrical and fixedly arranged between the two vertical plates, and the two groups of guide frames are obliquely and symmetrically fixedly arranged at the top of one side of the steel frame table.
Further, each group of guide frame middle part is all rotated and is equipped with two second guide pulleys, and every group first steel cable and second steel cable's one end passes corresponding spacing post bottom and cup joints on two groups of second guide pulleys, two groups first steel cable and second steel cable are the vertical state and extend to steelframe platform one end bottom.
Further, carry on the subassembly and include steel carrier plate, hang piece and rings, the one end of steel carrier plate is the fixed both sides that set up in the steel stand platform of horizontality, and the middle part of steel carrier plate is equipped with logical groove, hang the piece fixed one end bottom that sets up in steel carrier plate, rings are fixed to be set up in the bottom middle part of hanging the piece.
Further, the double round subassembly cup joints in the one end of two sets of drive assembly, the double round subassembly includes double round lifting hook and third steel cable, double round lifting hook top both sides all cup joint in the bottom one end of two sets of actuating mechanism, the one end of third steel cable articulates in the bottom of double round lifting hook, and the other end of third steel cable articulates in stop gear's bottom one end.
Further, the single wheel subassembly includes single wheel lifting hook and four fourth steel cables, single wheel lifting hook top cup joints in the one end of third steel cable and is located the double round lifting hook side, four the fourth steel cable is the pyramid form and hangs locates single wheel lifting hook bottom, and four fourth steel cable bottoms are hung and are equipped with the steel box girder.
The invention has the beneficial effects that:
1. The four fourth steel ropes are respectively fixed on four top rings on one side of the top of the steel box girder, the two hydraulic cylinders lift the suspension arm to a pyramid state of the four fourth steel ropes, the two groups of motor switches are opened and then drive the first gear to rotate, the first gear drives the second gear to rotate and simultaneously drive the rotating rod to rotate, the rotating rod drives the steel rollers to rotate and wind up, the two steel rollers respectively drive the respective first steel ropes and the second steel ropes to synchronously rotate, and the four groups of first guide wheels at the bottom of the cross beam respectively play a guiding role on the two groups of first steel ropes and the second steel ropes to avoid the condition of rope clamping.
2. The arrangement of the two sets of first and second steel cords is: the two groups of first steel ropes and second steel ropes are limited, so that the trend cannot deviate.
3. Two first steel ropes are sleeved on the inner wheel at one side of the top of the double-wheel lifting hook, two second steel ropes are sleeved on the inner wheel at the other side of the top of the double-wheel lifting hook, and the double-wheel lifting hook is stably lifted while two steel rollers are tightened, so that one end of a third steel rope at the bottom of the double-wheel lifting hook is lifted, one end of the third steel rope slides at the top of the heavy single-wheel lifting hook and drives the single-wheel lifting hook to lift, the heavy single-wheel lifting hook drives four fourth steel ropes to lift, the four fourth steel ropes drive a steel box girder to stably lift, the steel box girder is driven by a double-winding motor, mechanical local tensile stress during single motor driving is reduced, the service life of the motor is prolonged, and meanwhile, half of bearing of the steel box girder is borne by a steel carrier plate, the stability during motor driving can be guaranteed, the motor load is greatly reduced, and the service life of the motor is prolonged.
According to the invention, the double-winding motor is used for driving, and the double-wheel lifting hook and the heavy single-wheel lifting hook are matched to form the movable pulley type single-side driving, so that the bearing capacity and mechanical tensile stress of the double motor are reduced, the safety and reliability are realized, and the stability of the hoisting motor is greatly improved.
Drawings
In order to more clearly illustrate the technical solution of the embodiments of the present invention, the following description briefly describes the drawings in the embodiments of the present invention.
FIG. 1 is a schematic perspective view of the present invention;
FIG. 2 is a schematic perspective view of a lifting mechanism according to the present invention;
FIG. 3 is an enlarged schematic view of FIG. 2 at A;
FIG. 4 is a schematic perspective view of the driving mechanism, the limiting mechanism and the lifting mechanism of the present invention;
FIG. 5 is an enlarged schematic view at B in FIG. 4;
FIG. 6 is an enlarged schematic view of FIG. 4 at C;
FIG. 7 is a partially disassembled schematic illustration of the drive mechanism and spacing mechanism of the present invention;
FIG. 8 is an enlarged schematic view of FIG. 7 at D;
FIG. 9 is an enlarged schematic view of F in FIG. 7;
FIG. 10 is a schematic perspective view of a mounting assembly according to the present invention;
FIG. 11 is a partially disassembled schematic view of the lifting mechanism of the present invention;
FIG. 12 is an enlarged schematic view at G in FIG. 11;
In the figure:
the lifting mechanism 1, the bearing column 10, the first hinged steel plate 100, the hydraulic cylinder 101, the second hinged steel plate 102, the suspension arm 11, the bearing seat 110, the cross beam 111, the mounting groove 1110, the guide rod 1111 and the first guide wheel 1112;
The device comprises a limiting mechanism 2, a guide assembly 20, a steel stand 200, a vertical plate 201, a limiting column 202, a guide frame 203, a second guide wheel 2030, a carrying assembly 21, a steel carrier 210, a through groove 2100, a hanging block 211 and a hanging ring 212;
Lifting mechanism 3, double-wheel assembly 30, double-wheel lifting hook 300, third steel rope 301, single-wheel assembly 31, single-wheel lifting hook 310, fourth steel rope 311 and steel box girder 312;
the device comprises a driving mechanism 4, a rotating assembly 40, a steel roller 400, a rotating rod 401, a first steel rope 402, a second steel rope 403, a spacer ring 404, a limiting rod 405, a supporting plate 406, a driving assembly 41, a base 410, a motor 411, a first gear 412, a second gear 413 and a protective cover 414.
Detailed Description
The technical scheme of the invention is further described below by the specific embodiments with reference to the accompanying drawings.
Wherein the drawings are for illustrative purposes only and are shown in schematic, non-physical, and not intended to be limiting of the present patent; for the purpose of better illustrating embodiments of the invention, certain elements of the drawings may be omitted, enlarged or reduced in size and do not represent the actual product dimensions.
The invention provides a technical scheme that: referring to fig. 1, a hoisting mechanism for constructing a large-span steel box girder comprises a hoisting mechanism 1, a limiting mechanism 2, a hoisting mechanism 3 and two groups of driving mechanisms 4, wherein the hoisting mechanism 1 is a mounting stress carrier of all mechanisms, the limiting mechanism 2 limits and guides the two groups of driving assemblies 41, the hoisting mechanism 3 is used for guaranteeing stability of the two groups of driving mechanisms 4, the hoisting mechanism 1 consists of a bearing column 10 and a suspension arm 11, the bearing column 10 is a fixed foundation for hoisting operation, one end of the suspension arm 11 is hinged to the top of the bearing column 10, two groups of carrying seats 110 are symmetrically and fixedly arranged on one side of the top of the suspension arm 11, the two groups of driving mechanisms 4 are symmetrically arranged on the two groups of carrying seats 110, each group of driving mechanisms 4 comprises a rotating assembly 40 and a driving assembly 41, the rotating assembly 40 is fixedly arranged on the top of the two groups of carrying seats 110, the driving assembly 41 is fixedly arranged on one side of the rotating assembly 40, the limiting mechanism 2 comprises a guide assembly 20 and a carrying assembly 21, the guide assembly 20 is fixedly arranged on the other end of the suspension arm 11, the guide assembly 21 is fixedly arranged on the bottom side of the guide assembly 20, the hoisting mechanism 3 comprises a double-wheel assembly 30 and a single-wheel assembly 31 which is fixedly arranged on the bottom of the single-wheel assembly 31, and is fixedly arranged on the bottom of the single-wheel assembly 31, and is fixedly arranged on the single-wheel assembly 31.
Referring to fig. 2, two groups of first hinged steel plates 100 are symmetrically and fixedly arranged on one side of the top of the bearing column 10, two groups of first hinged steel plates 100 provide adjusting and installing carriers for two hydraulic cylinders 101, each group of first hinged steel plates 100 is hinged with a hydraulic cylinder 101, two hydraulic cylinders 101 are used for lifting the height of a suspension arm 11, the output end of each first hydraulic cylinder 101 is hinged with a second hinged steel plate 102, two second hinged steel plates 102 provide movable installing carriers for the output shafts of the two hydraulic cylinders 101, and the two second hinged steel plates 102 are symmetrically and fixedly arranged on one side of the bottom of the suspension arm 11, so that the suspension arm 11 is lifted until four fourth steel ropes 311 are in a pyramid state when the two hydraulic cylinders 101 are started, and balance of stress points is ensured.
In the present invention, referring to fig. 3, 4, 5, 7 and 8, the driving assembly 41 includes a base 410, a motor 411, a first gear 412, a second gear 413 and a protection cover 414, wherein the base 410 is a fixed mounting carrier for the motor 411, the protection cover 414 is a first gear 412 and a second gear 413 for protecting the inside, the base 410 is fixedly disposed on the top of the boom 11 and is located beside the steel roller 400, the protection cover 414 is fixedly disposed on one side of the corresponding support plate 406, the motor 411 is fixedly disposed on the base 410 in a horizontal state, an output shaft of the motor 411 is fixedly connected with the first gear 412 through the corresponding support plate 406, the second gear 413 is fixedly disposed at one end of the rotating rod 401, the second gear 413 is meshed with the first gear 412, the first gear 412 and the second gear 413 are both disposed in the protection cover 414, and after the motor 411 is started, the output shaft of the motor 411 drives the first gear 412 to rotate, the first gear 412 drives the second gear 413 to rotate, and the second gear 413 drives the rotating rod 401.
The middle parts of the top ends of the two groups of carrier seats 110 positioned at one side of the top of the suspension arm are fixedly provided with cross beams 111, the cross beams 111 provide fixed mounting carriers for four supporting plates 406 and also provide fixed mounting carriers for four first guide wheels 1112, each group of rotating components 40 comprises a steel roller 400, a rotating rod 401, a first steel rope 402, a second steel rope 403, a spacing ring 404, two groups of spacing rods 405 and two supporting plates 406, the two supporting plates 406 provide spacing rotating carriers for the rotating rod 401, the spacing ring 404 separates the first steel rope 402 and the second steel rope 403 to avoid winding of the two steel ropes, the two groups of spacing rods 405 limit the first steel rope 402 and the second steel rope 403, the two supporting plates 406 are symmetrically and fixedly arranged at two sides of the top of the cross beams 111, the rotating rod 401 is rotatably arranged between the two supporting plates 406, the steel roller 400 is fixedly arranged on the rotating rod 401, the spacing ring 404 is fixedly arranged at the middle part of the steel roller 400, the first steel rope 402 and the second steel rope 403 are symmetrically wound on the steel roller 400 and are positioned at two sides of the spacing ring 404, the two groups of limiting rods 405 are symmetrically and fixedly arranged between the two supporting plates 406, the two groups of limiting rods 405 are symmetrically arranged at the upper side and the lower side of the steel roller 400, the middle part of the bottom end of the cross beam 111 is provided with a mounting groove 1110, two guide rods 1111 are fixedly arranged in the mounting groove 1110, the two guide rods 1111 are symmetrically arranged, the end parts of the two groups of guide rods 1111 are respectively provided with a first guide wheel 1112 in a rotating way, one end of the first steel rope 402 and one end of the second steel rope 403 are respectively sleeved with the two first guide wheels 1112, one end of the first steel rope 402 and one end of the second steel rope 403 extend to one end of the top of the suspension arm 11 in a right angle, after the second gear 413 drives the rotating rod 401 to rotate, the rotating rod 401 drives the steel roller 400 to rotate and wind, and accordingly the two steel rollers 400 respectively drive the respective first steel rope 402 and the second steel rope 403 to synchronously rotate, four sets of first guide wheels 1112 at the bottom of the cross beam 111 guide the two sets of first and second steel cords 402, 403, respectively.
Referring to fig. 4, fig. 6, fig. 7 and fig. 9, the guide assembly 20 shown in fig. 7 and fig. 9 comprises a steel frame table 200, two vertical plates 201, two limiting columns 202 and two groups of guide frames 203, wherein the steel frame table 200 provides a fixed installation effect for the two vertical plates 201 and the two groups of guide frames 203, the steel frame table 200 is fixedly arranged at one end of the suspension arm 11, the two vertical plates 201 are symmetrically and fixedly arranged at the top of the steel frame table 200, the two limiting columns 202 are vertically and fixedly arranged between the two vertical plates 201, the two groups of guide frames 203 are inclined and fixedly arranged at one side top of the steel frame table 200, the guide frames 203 are inclined so as to prevent the first steel ropes 402 and the second steel ropes 403 from sliding down, two second guide wheels 2030 are rotatably arranged in the middle of each group of guide frames 203, one end of each group of the first steel ropes 402 and the second steel ropes 403 passes through the bottom of the corresponding limiting column 202 and is sleeved on the two groups of the second guide wheels 2030, the two groups of first steel ropes 402 and the second steel ropes 403 extend to the bottom of the steel frame table 200 in a vertical state, and the two groups of the first steel ropes 403 and the second steel ropes 403 are respectively sleeved on the two groups of the second steel ropes 203 and the two groups of steel ropes 203 are sleeved on the two second steel ropes 203.
Referring to fig. 10, the carrying assembly 21 includes a steel carrier plate 210, a hanging block 211 and hanging rings 212, where the steel carrier plate 210 is used to bear half of the weight of the steel box girder 312, so as to reduce the bearing capacity of the motor 411, the hanging rings 212 and the hanging block 211 are used to fixedly connect the steel carrier plate 210 with the third steel ropes 301 together, one end of the steel carrier plate 210 is horizontally fixed on two sides of the steel stand 200, a through groove 2100 is provided in the middle of the steel carrier plate 210, the through groove 2100 provides a stretching space for two groups of the first steel ropes 402 and the second steel ropes 403, the hanging block 211 is fixedly arranged at the bottom of one end of the steel carrier plate 210, and the hanging rings 212 are fixedly arranged in the middle of the bottom of the hanging block 211.
In one embodiment of the present invention, referring to fig. 11 to 12, the two-wheel assembly 30 is sleeved at one end of the two sets of driving assemblies 41, the two-wheel assembly 30 comprises a two-wheel hook 300 and a third steel rope 301, the third steel rope 301 is made of special high wear-resistant and high temperature-resistant materials, which provides a pulling force effect for the two-wheel hook 300, the two sides of the top of the two-wheel hook 300 are sleeved at one end of the bottom of the two sets of driving mechanisms 4, one end of the third steel rope 301 is hung at the bottom of the two-wheel hook 300, the other end of the third steel rope 301 is hung at one end of the bottom of the limiting mechanism 2, the single-wheel assembly 31 comprises a single-wheel hook 310 and four fourth steel ropes 311, the top of the single-wheel hook 310 is sleeved at one end of the third steel rope 301 and is located beside the two-wheel hook 300, four fourth steel ropes 311 are in the pyramid shape and hang to locate single round lifting hook 310 bottom, and four fourth steel ropes 311 bottom hang to be equipped with steel box girder 312, two first steel ropes 402 cup joint in the interior wheel of double round lifting hook 300 top one side, two second steel ropes 403 cover are located in the interior wheel of double round lifting hook 300 top opposite side, when two steel rolls 400 tighten up, double round lifting hook 300 is steadily promoted, thereby the one end of the third steel rope 301 of double round lifting hook 300 pulling its bottom rises, and then one end of third steel rope 301 slides at heavy single round lifting hook 310 top and drives single round lifting hook 310 and rise, heavy single round lifting hook 310 drives four fourth steel ropes 311 and rises, and then four fourth steel ropes 311 drive steel box girder 312 and steadily rise.
The working principle and the method are as follows:
The four fourth steel ropes 311 are initially fixed on the four top rings at one side of the top of the steel box girder 312 respectively, the two hydraulic cylinders 101 are started to lift the suspension arm 11 until the four fourth steel ropes 311 are in a pyramid state, the control controller is operated to turn on the two groups of switches of the motor 411, the output shafts of the two motors 411 drive the first gear 412 to rotate, the first gear 412 drives the second gear 413 to rotate, the second gear 413 drives the rotating rod 401 to rotate, the rotating rod 401 drives the steel roller 400 to rotate and wind up, thereby the two steel rollers 400 respectively drive the respective first steel ropes 402 and second steel ropes 403 to synchronously rotate, the four groups of first guide wheels at the bottom of the cross beam 111 respectively play a guiding role on the two groups of first 1112 steel ropes 402 and second steel ropes 403, the two groups of first steel ropes 402 and second steel ropes 403 respectively pass through the two limit posts 202 and are sleeved on the four second guide wheels 2030 of the two groups of guide frames 203, and vertically extend along four second guide wheels 2030 to be sleeved on the double-wheel lifting hook 300 in a right angle, two first steel ropes 402 are sleeved on the inner wheel at one side of the top of the double-wheel lifting hook 300, two second steel ropes 403 are sleeved on the inner wheel at the other side of the top of the double-wheel lifting hook 300, and as the two steel rolls 400 are tightened, the double-wheel lifting hook 300 is stably lifted, so that one end of a third steel rope 301 at the bottom of the double-wheel lifting hook 300 is pulled to rise, one end of the third steel rope 301 slides on the top of the heavy single-wheel lifting hook 310 and drives the single-wheel lifting hook 310 to rise, the heavy single-wheel lifting hook 310 drives four fourth steel ropes 311 to rise, and the four fourth steel ropes 311 drive a steel box girder 312 to stably rise, the double-winding type motor 411 is used for driving, mechanical local tensile stress during driving of the single motor 411 is reduced, the service life of the motor 411 is prolonged, and simultaneously half of the bearing of the steel box girder 312 is borne by the steel carrier plate 210, the stability during driving 411 can be ensured, the motor 411 load is greatly reduced.
Claims (6)
1. The utility model provides a hoisting mechanism for large-span steel case roof beam construction, includes hoisting mechanism (1), stop gear (2), lifting mechanism (3) and two sets of actuating mechanism (4), its characterized in that, hoisting mechanism (1) comprises carrier column (10) and davit (11), the one end of davit (11) articulates in the top of carrier column (10), the top one side symmetry of davit (11) is fixed and is equipped with two sets of carrier seats (110), two sets of actuating mechanism (4) symmetry sets up on two sets of carrier seats (110), every group actuating mechanism (4) include rotating assembly (40) and actuating assembly (41), rotating assembly (40) are fixed to be set up in two sets of carrier seats (110) tops, actuating assembly (41) are fixed to be set up in one side of rotating assembly (40), stop gear (2) include guide assembly (20) and carrier assembly (21), guide assembly (20) are fixed to be set up in the other end of 11), carrier assembly (21) are fixed to be set up in guide assembly (20) lateral part, bottom of hanging assembly (3) are connected in single wheel assembly (31) and are hung in single wheel assembly (31) bottom of single wheel assembly (31), one end of the single wheel assembly (31) is fixedly arranged at the bottom of the limiting mechanism (2);
The middle of the top end of each carrying seat (110) is fixedly provided with a cross beam (111), each rotating assembly (40) comprises a steel roller (400), a rotating rod (401), a first steel rope (402), a second steel rope (403), a spacing ring (404), two groups of limiting rods (405) and two supporting plates (406), the two supporting plates (406) are symmetrically and fixedly arranged on two sides of the top of the cross beam (111), the rotating rod (401) is rotationally arranged between the two supporting plates (406), the steel roller (400) is fixedly arranged on the rotating rod (401), the spacing ring (404) is fixedly arranged in the middle of the steel roller (400), the first steel rope (402) and the second steel rope (403) are symmetrically wound on the steel roller (400) and are positioned on two sides of the spacing ring (404), the two groups of limiting rods (405) are symmetrically and fixedly arranged between the two supporting plates (406), and the two groups of limiting rods (405) are symmetrically arranged on the upper side and the lower side of the steel roller (400);
The middle part of the bottom end of the cross beam (111) is provided with a mounting groove (1110), two guide rods (1111) are fixedly arranged in the mounting groove (1110), the two guide rods (1111) are symmetrically arranged, the end parts of the two groups of guide rods (1111) are respectively provided with a first guide wheel (1112) in a rotating mode, one ends of the first steel rope (402) and the second steel rope (403) are respectively sleeved with the two first guide wheels (1112), and one ends of the first steel rope (402) and the second steel rope (403) extend to one end of the top of the suspension arm (11) in a right angle shape;
The double-wheel assembly (30) is sleeved at one end of the two groups of driving assemblies (41), the double-wheel assembly (30) comprises a double-wheel lifting hook (300) and a third steel rope (301), two sides of the top of the double-wheel lifting hook (300) are sleeved at one end of the bottoms of the two groups of driving mechanisms (4), one end of the third steel rope (301) is hung at the bottom of the double-wheel lifting hook (300), and the other end of the third steel rope (301) is hung at one end of the bottom of the limiting mechanism (2); the single-wheel assembly (31) comprises a single-wheel lifting hook (310) and four fourth steel ropes (311), the top of the single-wheel lifting hook (310) is sleeved at one end of the third steel rope (301) and located beside the double-wheel lifting hook (300), the four fourth steel ropes (311) are in a pyramid shape and are hung at the bottom of the single-wheel lifting hook (310), and steel box girders (312) are hung at the bottom of the four fourth steel ropes (311).
2. The hoisting mechanism for constructing the large-span steel box girder according to claim 1, wherein two groups of first hinged steel plates (100) are symmetrically and fixedly arranged on one side of the top of the bearing column (10), each group of first hinged steel plates (100) is hinged with a hydraulic cylinder (101), the output end of each hydraulic cylinder (101) is hinged with a second hinged steel plate (102), and the two second hinged steel plates (102) are symmetrically and fixedly arranged on one side of the bottom of the suspension arm (11).
3. The hoisting mechanism for constructing the large-span steel box girder according to claim 1, wherein the driving assembly (41) comprises a machine base (410), a motor (411), a first gear (412), a second gear (413) and a protection cover (414), the machine base (410) is fixedly arranged at the top of the suspension arm (11) and is positioned beside the steel roller (400), the protection cover (414) is fixedly arranged at one side of the corresponding support plate (406), the motor (411) is fixedly arranged on the machine base (410) in a horizontal state, an output shaft of the motor (411) penetrates through the corresponding support plate (406) and is fixedly connected with the first gear (412), the second gear (413) is fixedly arranged at one end of the rotary rod (401), the second gear (413) is meshed with the first gear (412), and the first gear (412) and the second gear (413) are both positioned in the protection cover (414).
4. A hoisting mechanism for constructing a long-span steel box girder according to claim 3, wherein the guide assembly (20) comprises a steel frame table (200), two vertical plates (201), two limiting columns (202) and two groups of guide frames (203), the steel frame table (200) is fixedly arranged at one end of the suspension arm (11), the two vertical plates (201) are symmetrically and fixedly arranged at the top of the steel frame table (200), the two limiting columns (202) are vertically and fixedly arranged between the two vertical plates (201), and the two groups of guide frames (203) are inclined and symmetrically and fixedly arranged at one side top of the steel frame table (200).
5. The hoisting mechanism for constructing the large-span steel box girder according to claim 4, wherein two second guide wheels (2030) are rotatably arranged in the middle of each group of guide frames (203), one end of each group of the first steel ropes (402) and one end of each group of the second steel ropes (403) penetrate through the bottoms of the corresponding limiting columns (202) and are sleeved on the two groups of the second guide wheels (2030), and the two groups of the first steel ropes (402) and the second steel ropes (403) extend to the bottoms of one ends of the steel frame table (200) in a vertical state.
6. The hoisting mechanism for constructing the large-span steel box girder according to claim 5, wherein the carrying assembly (21) comprises a steel carrier plate (210), a hoisting block (211) and hoisting rings (212), one end of the steel carrier plate (210) is horizontally fixedly arranged on two sides of a steel stand (200), a through groove (2100) is formed in the middle of the steel carrier plate (210), the hoisting block (211) is fixedly arranged at the bottom of one end of the steel carrier plate (210), and the hoisting rings (212) are fixedly arranged at the middle of the bottom end of the hoisting block (211).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210182122.1A CN114560410B (en) | 2022-02-26 | 2022-02-26 | Hoisting mechanism for building large-span steel box girder and method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210182122.1A CN114560410B (en) | 2022-02-26 | 2022-02-26 | Hoisting mechanism for building large-span steel box girder and method thereof |
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| CN114560410B true CN114560410B (en) | 2024-04-30 |
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| CN113602973A (en) * | 2021-10-08 | 2021-11-05 | 河南卫华重型机械股份有限公司 | Mechanical anti-swing bridge crane for hoisting and bundling round steel |
| CN113734983A (en) * | 2021-09-01 | 2021-12-03 | 中国建筑第七工程局有限公司 | Steel case roof beam hoist device for construction |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| DE10100993C2 (en) * | 2001-01-10 | 2003-04-10 | Spanset Inter Ag Oetwil Am See | Device for adjusting the length of an endless sling and device for lifting loads |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2270192A1 (en) * | 1974-05-09 | 1975-12-05 | Potain Sa | Movable crane load radius reduction system - has support acting against hoist rope falls hauled in by winch |
| CN108657977A (en) * | 2018-07-03 | 2018-10-16 | 信华智能装备(江苏)有限公司 | A kind of double-steel wire rope electric block |
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| CN114560410A (en) | 2022-05-31 |
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