CN110104522B - Traction type construction lifter for folding roof beam and construction method thereof - Google Patents
Traction type construction lifter for folding roof beam and construction method thereof Download PDFInfo
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- CN110104522B CN110104522B CN201910429456.2A CN201910429456A CN110104522B CN 110104522 B CN110104522 B CN 110104522B CN 201910429456 A CN201910429456 A CN 201910429456A CN 110104522 B CN110104522 B CN 110104522B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B7/00—Other common features of elevators
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B11/00—Main component parts of lifts in, or associated with, buildings or other structures
- B66B11/04—Driving gear ; Details thereof, e.g. seals
- B66B11/043—Driving gear ; Details thereof, e.g. seals actuated by rotating motor; Details, e.g. ventilation
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B7/00—Other common features of elevators
- B66B7/02—Guideways; Guides
- B66B7/023—Mounting means therefor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B7/00—Other common features of elevators
- B66B7/06—Arrangements of ropes or cables
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B50/00—Energy efficient technologies in elevators, escalators and moving walkways, e.g. energy saving or recuperation technologies
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- Engineering & Computer Science (AREA)
- Civil Engineering (AREA)
- Mechanical Engineering (AREA)
- Structural Engineering (AREA)
- Types And Forms Of Lifts (AREA)
Abstract
The utility model provides a folding roof beam tows formula construction elevator, includes hauler, haulage rope, girder and folding beam, and the girder sets up along controlling the direction level, and girder and folding beam all adopt two channel-section steels that the opening set up in the back of the body mutually around, have installation space between two channel-section steels, and the top and the bottom of two channel-section steels are all as an organic whole through the welding of horizontal connecting plate, form a whole roof beam that the level was arranged after girder right-hand member was passed through hinge assembly with folding beam and is connected. The invention also discloses a construction method of the folding roof beam traction type construction lifter, which has novel design, convenient and quick use, easy operation, quicker and more convenient and more energy-saving and environment-friendly installation method than the conventional installation method, expands the use mode of the traction machine, has strong practicability and is a good method worthy of popularization.
Description
Technical Field
The invention belongs to the technical field of building construction mechanical equipment, and particularly relates to a folding roof beam traction type construction lifter and a construction method thereof.
Background
In the construction of high-rise buildings, the construction lifter for the elevator shaft usually adopts a horizontal beam (overhead beam), the horizontal beam is inconvenient to install and heighten later due to overlong beam body, the horizontal beam is required to be obliquely hung and inserted into a reserved hole during installation and heighten operation, the oblique hanging is inconvenient to operate and unsafe, a split heads with the height of 1500mm are supported below the overhead beam, the split heads of the support pads are not tightly connected with the overhead beam, the instability is caused, the split heads with the height of 1500mm are 80kg, the shoulder is repeatedly carried by manpower, the speed is too slow, manpower and material resources are wasted, and the construction period is also not guaranteed.
Disclosure of Invention
The invention aims to solve the defects in the prior art and provides the folding roof beam traction type construction lifter with strong safety and reliability, short time, low cost and high efficiency and the construction method thereof.
In order to solve the technical problems, the invention adopts the following technical scheme: the utility model provides a folding roof beam traction type construction elevator, includes hauler, hauling rope, girder and folding roof beam, and the girder sets up along left and right sides direction level, and girder and folding roof beam all adopt two channel-steels that open front and back set up in opposite directions, have the installation space between two channel-steels, and the top and the bottom of two channel-steels are all welded as an organic wholely through horizontal connecting plate, form a whole roof beam that arranges horizontally after girder right-hand member and folding roof beam pass through hinge assembly connection;
the upper part and the bottom of the girder are respectively provided with two upper beam supports which are opposite front and back and two lower beam supports which are opposite front and back, a third rope guiding wheel which is positioned at the upper left of the first rope guiding wheel is rotatably arranged between the two upper beam supports, and a fourth rope guiding wheel which is positioned at the lower right of the first rope guiding wheel and the lower left of the second rope guiding wheel is rotatably arranged between the two lower beam supports; the elevator car and the counter weight are connected respectively at the both ends of haulage rope, and the hauler is located under the girder left side, and the haulage rope is walked around the upper right portion of second guide rope sheave, the upper left portion of third guide rope sheave, hauler, first guide rope sheave's upper half and lower right portion, the upper left portion of fourth guide rope sheave in proper order by elevator car to counter weight.
The notch internal welding of girder and folding beam's channel-section steel has the equal extension board that sets up perpendicularly of a plurality of, and the right-hand member welding of girder has the perpendicular first end plate that supports that is provided with, and the left end welding of folding beam has the perpendicular second end plate that supports that is provided with, first end plate right flank and second end plate left surface contact.
The hinge assembly comprises an upper fixed plate, a lower fixed plate, an upper movable plate and a lower movable plate which are respectively provided with two pieces; the lower side edges of the two upper fixing plates are fixedly connected to the right side of the top of the main beam, and the two upper fixing plates are arranged in front-back and front-back pairs; the upper side edges of the two lower fixed plates are fixedly connected to the right side of the bottom of the main beam, the two lower fixed plates are arranged in front-back pairs, the lower side edges of the two upper movable plates are fixedly connected to the left side of the top of the folding beam, and the two upper movable plates are arranged in front-back pairs; the upper side edges of the two lower movable plates are fixedly connected to the left side of the bottom of the folding beam, and the two lower movable plates are arranged in front-back and front-back pairs;
the left ends of the two upper movable plates extend into the space between the right ends of the two upper fixed plates, the two upper movable plates and the two upper fixed plates are connected in an inserting mode through upper pin shafts which are arranged horizontally in the front-back mode, the left ends of the two lower movable plates extend into the space between the right ends of the two lower fixed plates, and the two lower movable plates and the two lower fixed plates are connected in an inserting mode through lower pin shafts which are arranged horizontally in the front-back mode.
The two ends of the central shaft of the first rope guiding wheel and the second rope guiding wheel are fixed at the top of the main beam through first U-shaped bolts, the two ends of the central shaft of the third rope guiding wheel are fixed at the upper right side of the upper beam support through second U-shaped bolts, and the two ends of the central shaft of the fourth rope guiding wheel are fixed at the lower left side of the lower beam support through third U-shaped bolts.
Two balance lifting lugs are arranged at the top of the right side of the main beam and the top of the upper beam support.
Rope stoppers with the same structure are arranged at the outer circumferences of the first rope guiding wheel, the second rope guiding wheel, the third rope guiding wheel and the fourth rope guiding wheel; the rope blocking device comprises two supporting rods which are correspondingly arranged in the front-back direction, a fixing rod which is horizontally arranged along the front-back direction is fixedly arranged between the two supporting rods, and a rotatable sleeve is sleeved outside the fixing rod.
A construction method of a folding roof beam traction type construction lifter comprises the following steps,
(1) The main beam and the folding beam which are suitable for the size of the elevator shaft are manufactured according to the size of the section of the elevator shaft, the main beam and the folding beam are respectively 20# channel steel, the horizontal connecting plates and the supporting plates are welded on the main beam and the folding beam, an upper beam support, a lower beam support, a first supporting end plate, an upper fixing plate and a lower fixing plate are welded at the design position of the main beam, and a second supporting end plate, an upper movable plate and a lower movable plate are welded at the design position of the folding beam;
(2) The U-shaped bolts are used for installing a first rope guide wheel, a second rope guide wheel, a third rope guide wheel and a fourth rope guide wheel at the design positions of the main beam, the upper beam support and the lower beam support, supporting rods of rope blocking devices are welded at the proper positions of the main beam and the upper beam support, and fixing rods and sleeves are installed;
(3) Correspondingly inserting two lower movable plates and two lower fixed plates into the lower pin shafts, connecting the left end of the folding beam with the right end of the main beam, and enabling the folding beam to freely droop under the action of self gravity;
(4) The traction machine is arranged at the floor at the bottom of the elevator shaft, so that the transportation and the installation are convenient;
(5) Lifting the main beam and the folding beam in the elevator shaft to a reserved hole and a door opening with proper height for positioning;
(6) The traction rope is connected with the elevator car and the counterweight after bypassing the right upper part of the second rope guiding wheel, the left upper part of the third rope guiding wheel, the traction machine, the upper half part and the right lower part of the first rope guiding wheel and the left upper part of the fourth rope guiding wheel in sequence;
(7) Starting the traction machine to perform various adjustments, so as to ensure the safety and reliability of the up-and-down movement of the elevator car;
(8) After the adjustment is completed, the traction machine is used as a power lifting mechanism to drive the elevator car to be used as a construction elevator;
(9) With the increase of the floor construction height, the construction elevator needs to be lifted to the reserved hole and the door opening of the upper layer for positioning.
The concrete process of the step (4) is that two hoisting steel wire ropes with the same length are used for being respectively hung on two balance lifting lugs on the left side and two balance lifting lugs on the right side, and the installed main beam and the folding beam are hoisted to the door opening of the elevator shaft through a tower crane or an electric hoist until the folding beam corresponds to the door opening on the right side wall of the elevator shaft left and right, and then the tower crane or the electric hoist is stopped, and at the moment, the main beam is higher than a reserved opening on the left side wall of the elevator shaft; then the folding Liang Xiangyou is rotated, the folding beam stretches into the door opening until the second support end plate at the left end of the folding beam is correspondingly contacted with the first support end plate at the right end of the main beam, and then the upper pin shaft is inserted between the two upper movable plates and the two upper fixed plates;
and (3) restarting the tower crane or the electric hoist, lowering the main beam and the folding beam, stopping the tower crane or the electric hoist when the height of the main beam is consistent with that of a reserved hole on the left side wall of the elevator shaft, horizontally moving the main beam and the folding beam leftwards, extending the left end of the main beam into the reserved hole to stop, restarting the tower crane or the electric hoist, further lowering the main beam and the folding beam, respectively supporting the left end bottom of the main beam and the right end bottom of the folding beam on the bottom plates of the reserved hole and the door opening, stopping the tower crane or the electric hoist, taking down two hoisting steel wire ropes, and simultaneously fixing the right end of the folding beam on the bottom plate of the door opening by using expansion bolts.
A construction method of a folding roof beam traction type construction lifter comprises the specific process of the step (9),
firstly, a counterweight is temporarily fixed on a shaft wall by using a steel tag and a binding steel wire rope through a wall hole left when the shaft wall of an elevator shaft is poured, an elevator car is lowered to the bottom of the shaft, a hoisting steel wire rope coiled at the top of the elevator car in advance is loosened, an expansion bolt is disassembled, the two hoisting steel wire ropes used in the step (4) are respectively hung on the two balance lifting lugs at the left side and the two balance lifting lugs at the right side, a main beam and a folding beam are lifted upwards through a tower crane or an electric hoist, when the two hoisting steel wire ropes are just tightened, the main beam horizontally moves to the right, the left end of the main beam is separated from a reserved hole, the main beam and the folding beam are continuously lifted until the lifting height is larger than the length of the folding beam, then the tower crane or the electric hoist is stopped, an upper pin roll is removed, the pin roll below the folding beam is downwards folded in the door hole, at the moment, the main beam and the folding beam are vertically arranged, then the main beam and the electric hoist are started to continuously lift the main beam and the folding beam upwards,
stopping the tower crane or the electric hoist after the folding beam corresponds to the door opening on the right side wall of the elevator shaft on the upper layer or layers, wherein the main beam is higher than the reserved opening on the left side wall of the elevator shaft on one layer or more layers; then the folding Liang Xiangyou is rotated, the folding beam stretches into the door opening until the second support end plate at the left end of the folding beam is correspondingly contacted with the first support end plate at the right end of the main beam, and then the upper pin shaft is inserted between the two upper movable plates and the two upper fixed plates;
the tower crane or the electric hoist is restarted, the main beam and the folding beam are lowered, when the height of the main beam is consistent with that of a reserved hole on the left side wall of the elevator shaft, the tower crane or the electric hoist is stopped, the main beam and the folding beam are horizontally moved leftwards, the left end of the main beam stretches into the reserved hole to stop, the tower crane or the electric hoist is restarted, the main beam and the folding beam are further lowered, the left end bottom of the main beam and the right end bottom of the folding beam are respectively supported on the bottom plates of the reserved hole and the door opening to stop the tower crane or the electric hoist, two hoisting steel wire ropes are taken down, and the right end of the folding beam is fixed on the bottom plate of the door opening by using expansion bolts;
and then tensioning the traction rope, disassembling the steel tag and the binding steel wire rope which are used for temporarily fixing the weight, and completing heightening and lifting operation after various adjustment.
By adopting the technical scheme, the invention has novel design, convenient and quick use and easy operation, and the method is faster, more convenient, more energy-saving and environment-friendly than the conventional installation method through practical test application. The invention is fast that the invention does not have the inclined hanging during the operation of the straight integral beam, does not have the repeated shoulder carrying of the manual force of the split heads with the weight of 80kg and the height of 1500mm, saves 5φThe rope guiding wheel with the diameter of 400mm avoids redundant steel wire rope threading and reduces labor intensity; the method is convenient to fold in sections, balance and hoist, and avoids threading and winding of the steel wire rope; the energy saving method can save the consumption of 2/3 of steel wire ropes, one construction elevator with the height of 100m is used, the total consumption of 100m is 1800m when 6 ropes are taken, the method can save the consumption of 1200m,φthe theoretical weight of a 10mm steel wire rope is 34.6kg, 1200 m=415 kg, and 5 steel wires are savedφThe guide rope wheels with the diameter of 400mm are 25kg, 5=125 kg are adopted for each guide rope wheel, so that the overall weight of the construction hoist is reduced by 540kg, work is reduced by reducing the weight, work is reduced, energy is saved, emission is reduced, and the purposes of energy conservation and environmental protection are achieved. In a word, the invention provides a simple, quick, low-cost, energy-saving, environment-friendly and high-efficiency folding ceiling beam traction type construction lifter, and simultaneously expands the use mode of the traction machine, has strong practicability and is a good method worthy of popularization.
Drawings
FIG. 1 is an exploded schematic view of the present invention;
FIG. 2 is a lifting schematic of the folding beam of the present invention in a folded condition;
FIG. 3 is a schematic view of the main beam and the folding beam of the present invention in a straight line connection;
fig. 4 is a schematic view of the installation of a folding beam in a folded state with a roof beam hoisted into an elevator hoistway;
fig. 5 is a schematic installation view of the roof beam installed and fixed to the reserved hole and the door opening in working state.
Fig. 6 is a side view of fig. 5.
Detailed Description
As shown in fig. 1, 2 and 3, the traction type construction lifter for the folding roof beam comprises a traction machine 1, a traction rope 2, a main beam 3 and a folding beam 4, wherein the main beam 3 is horizontally arranged along the left-right direction, the main beam 3 and the folding beam 4 are two channel steels with openings arranged in a back-to-back mode, an installation space is reserved between the two channel steels, the top and the bottom of the two channel steels are welded into a whole through a horizontal connecting plate 5, and the right end of the main beam 3 and the folding beam 4 are connected through a hinge assembly 6 to form a whole roof beam which is horizontally arranged;
the main beam 3 is rotatably provided with a first guide rope wheel 7 and a second guide rope wheel 8, the lower parts of the first guide rope wheel 7 and the second guide rope wheel 8 are positioned in an installation space, the second guide rope wheel 8 is positioned on the right side of the first guide rope wheel 7, the top and the bottom of the main beam 3 are respectively provided with two upper beam supports 9 which are opposite front and back and two lower beam supports 10 which are opposite front and back, a third guide rope wheel 11 positioned above and left of the first guide rope wheel 7 is rotatably arranged between the two upper beam supports 9, and a fourth guide rope wheel 12 positioned below and right of the first guide rope wheel 7 and below and left of the second guide rope wheel 8 is rotatably arranged between the two lower beam supports 10; the elevator car 25 and the counterweight 14 are respectively connected to both ends of the traction rope 2, the traction machine 1 is positioned under the left side of the main beam 3, and the traction rope 2 sequentially bypasses the upper right part of the second guide rope pulley 8, the upper left part of the third guide rope pulley 11, the traction machine 1, the upper half part and the lower right part of the first guide rope pulley 7 and the upper left part of the fourth guide rope pulley 12 from the elevator car 25 to the counterweight 14.
The notch inside welding of the channel-section steel of girder 3 and folding roof beam 4 has the equal perpendicular extension board 13 that set up of a plurality of, and extension board 13 plays the effect of reinforcing matter girder 3 and folding roof beam 4 intensity, and the right-hand member welding of girder 3 has the perpendicular first supporting end plate 15 that is provided with, and the left end welding of folding roof beam 4 has the perpendicular second supporting end plate 16 that is provided with, and first supporting end plate 15 right flank and second supporting end plate 16 left surface contact. In normal operation, the first support end plate 15 and the second support end plate 16 are in press fit, so that the stability of the linear connection of the main beam 3 and the folding beam 4 is improved.
The hinge assembly 6 comprises an upper fixed plate 17, a lower fixed plate 18, an upper movable plate 19 and a lower movable plate 20 which are respectively provided with two pieces; the lower side edges of the two upper fixing plates 17 are fixedly connected to the right side of the top of the main beam 3, and the two upper fixing plates 17 are arranged in front-back pairs; the upper side edges of the two lower fixed plates 18 are fixedly connected to the right side of the bottom of the main beam 3, the two lower fixed plates 18 are arranged in front-back pairs, the lower side edges of the two upper movable plates 19 are fixedly connected to the left side of the top of the folding beam 4, and the two upper movable plates 19 are arranged in front-back pairs; the upper side edges of the two lower movable plates 20 are fixedly connected to the left side of the bottom of the folding beam 4, and the two lower movable plates 20 are arranged in front-back pairs;
the left ends of the two upper movable plates 19 extend into the space between the right ends of the two upper fixed plates 17, the two upper movable plates 19 and the two upper fixed plates 17 are connected in an inserting way through upper pin shafts which are horizontally arranged front and back, the left ends of the two lower movable plates 20 extend into the space between the right ends of the two lower fixed plates 18, and the two lower movable plates 20 and the two lower fixed plates 18 are connected in an inserting way through lower pin shafts which are horizontally arranged front and back.
The two ends of the central shaft of the first rope guiding wheel 7 and the second rope guiding wheel 8 are fixed at the top of the main beam 3 through first U-shaped bolts, the two ends of the central shaft of the third rope guiding wheel 11 are fixed at the upper right side of the upper beam support 9 through second U-shaped bolts, and the two ends of the central shaft of the fourth rope guiding wheel 12 are fixed at the lower left side of the lower beam support 10 through third U-shaped bolts.
Two balance lifting lugs 21 are arranged on the top of the right side of the main beam 3 and the top of the upper beam support 9.
Rope stoppers 22 with the same structure are arranged on the outer circumferences of the first rope guiding wheel 7, the second rope guiding wheel 8, the third rope guiding wheel 11 and the fourth rope guiding wheel 12; the rope stopper 22 comprises two supporting rods correspondingly arranged front and back, a fixing rod horizontally arranged along the front and back direction is fixedly arranged between the two supporting rods, and a rotatable sleeve is sleeved outside the fixing rod. The sleeve is contacted with the traction rope 2, so that the sleeve can rotate on the fixed rod.
As shown in fig. 4, 5 and 6, a construction method of a folding ceiling beam traction type construction hoist includes the steps of,
(1) The main beam 3 and the folding beam 4 which are suitable for the elevator shaft size are manufactured according to the elevator shaft cross section size, the main beam 3 and the folding beam 4 are respectively 20# channel steel, the horizontal connecting plates 5 and the supporting plates 13 are welded on the main beam 3 and the folding beam 4, the upper beam support 9, the lower beam support 10, the first supporting end plate 15, the upper fixing plate 17 and the lower fixing plate 18 are welded at the design position of the main beam 3, and the second supporting end plate 16, the upper movable plate 19 and the lower movable plate 20 are welded at the design position of the folding beam 4;
(2) The U-shaped bolts are used for installing a first rope guide wheel 7, a second rope guide wheel 8, a third rope guide wheel 11 and a fourth rope guide wheel 12 at the design positions of the main beam 3, the upper beam support 9 and the lower beam support 10, supporting rods of rope blocking devices 22 are welded at the proper positions of the main beam 3 and the upper beam support 9, and fixing rods and sleeves are installed;
(3) Correspondingly inserting two lower movable plates 20 and two lower fixed plates 18 into the lower pin shafts, connecting the left end of the folding beam 4 with the right end of the main beam 3, and allowing the folding beam 4 to freely sag under the action of self gravity;
(4) The traction machine 1 is arranged at the floor at the bottom of the elevator shaft, which is convenient for transportation and installation;
(5) The main beam 3 and the folding beam 4 are lifted in the elevator shaft to the reserved hole 23 and the door opening 24 with proper heights for positioning;
(6) The traction rope 2 is connected with the elevator car 25 and the counterweight 14 after being wound around the right upper part of the second guide rope wheel 8, the left upper part of the third guide rope wheel 11, the traction machine 1, the upper half part and the right lower part of the first guide rope wheel 7 and the left upper part of the fourth guide rope wheel 12 in sequence;
(7) Starting the traction machine 1 to perform various adjustments, so as to ensure the safety and reliability of the up-and-down movement of the elevator car 25;
(8) After the adjustment is completed, the traction machine 1 is used as a power lifting mechanism to drive the elevator car 25 to be used as a construction elevator;
(9) As the floor construction height increases, it is necessary to lift the construction hoist to the reserved hole 23 and the door opening 24 of the upper floor for positioning.
The specific process of the step (4) is as follows: two hoisting steel wire ropes 26 with the same length are used for being respectively hung on the two balance lifting lugs 21 on the left side and the two balance lifting lugs 21 on the right side, and the installed main beam 3 and the folding beam 4 are hoisted to the door opening 24 of the elevator shaft through a tower crane or an electric hoist 27 until the folding beam 4 corresponds to the door opening 24 on the right side wall of the elevator shaft left and right, and then the tower crane or the electric hoist 27 is stopped, and at the moment, the main beam 3 is higher than the reserved opening 23 on the left side wall of the elevator shaft; then the folding beam 4 is rotated upwards to the right, the folding beam 4 stretches into the door opening 24 until the second support end plate 16 at the left end of the folding beam 4 is correspondingly contacted with the first support end plate 15 at the right end of the main beam 3, and then an upper pin shaft is inserted between the two upper movable plates 19 and the two upper fixed plates 17;
and then starting the tower crane or the electric hoist 27, lowering the main beam 3 and the folding beam 4, stopping the tower crane or the electric hoist 27 when the height of the main beam 3 is consistent with that of the reserved hole 23 on the left side wall of the elevator shaft, horizontally moving the main beam 3 and the folding beam 4 leftwards, enabling the left end of the main beam 3 to extend into the reserved hole 23 to stop, starting the tower crane or the electric hoist 27, further lowering the main beam 3 and the folding beam 4, enabling the left end bottom of the main beam 3 and the right end bottom of the folding beam 4 to be respectively supported on the reserved hole 23 and the bottom plate of the door opening 24, stopping the tower crane or the electric hoist 27, taking down two hoisting steel wire ropes 26, and simultaneously fixing the right end of the folding beam 4 on the bottom plate of the door opening 24 by using expansion bolts.
The specific process of the step (9) is as follows: firstly, a counterweight 14 is temporarily fixed on a shaft wall by using a steel tag and a binding steel wire rope through a wall hole left when the shaft wall of an elevator shaft is poured, an elevator car 25 is lowered to the shaft bottom, a hoisting steel wire rope coiled at the top of the elevator car 25 in advance is loosened, an expansion bolt is disassembled, two hoisting steel wire ropes 26 used in the step (4) are respectively hung on two balance lifting lugs 21 on the left side and two balance lifting lugs 21 on the right side, a main beam 3 and a folding beam 4 are lifted upwards by a tower crane or an electric hoist 27, when the two hoisting steel wire ropes are just tightened, the main beam 3 is horizontally moved rightwards, the left end of the main beam 3 is separated from a reserved hole 23, the main beam 3 and the folding beam 4 are lifted continuously until the lifting height is larger than the length of the folding beam 4, then the tower crane or the electric hoist 27 is stopped, an upper pin roll is removed, the folding beam 4 is folded downwards in the shaft 24 by taking the pin roll, at the moment, the folding beam 4 is vertically arranged, the main beam 3 and the folding beam 4 are lifted upwards by the tower crane or the electric hoist 27 continuously,
stopping the tower crane or the electric hoist 27 until the folding beam 4 corresponds to the door opening 24 on the right side wall of the elevator shaft on the upper layer or layers, wherein the main beam 3 is higher than the reserved opening 23 on the left side wall of the elevator shaft on one layer or layers; then the folding beam 4 is rotated upwards to the right, the folding beam 4 stretches into the door opening 24 until the second support end plate 16 at the left end of the folding beam 4 is correspondingly contacted with the first support end plate 15 at the right end of the main beam 3, and then an upper pin shaft is inserted between the two upper movable plates 19 and the two upper fixed plates 17;
the tower crane or the electric hoist 27 is restarted, the main beam 3 and the folding beam 4 are lowered, when the height of the main beam 3 is consistent with that of a reserved hole 23 on the left side wall of the elevator shaft, the tower crane or the electric hoist 27 is stopped, the main beam 3 and the folding beam 4 are horizontally moved leftwards, the left end of the main beam 3 stretches into the reserved hole 23 to stop, the tower crane or the electric hoist 27 is restarted, the main beam 3 and the folding beam 4 are further lowered, the bottom of the left end of the main beam 3 and the bottom of the right end of the folding beam 4 are respectively supported on the reserved hole 23 and the bottom plate of the door opening 24 to stop the tower crane or the electric hoist 27, two hoisting steel wire ropes 26 are taken off, and meanwhile, the right end of the folding beam 4 is fixed on the bottom plate of the door opening 24 by using expansion bolts;
then the traction rope 2 is tensioned, the steel tag and the binding steel wire rope which are used for temporarily fixing the counterweight 14 are disassembled, and after various adjustments are made, the heightening and lifting operation is completed.
The present embodiment is not limited in any way by the shape, material, structure, etc. of the present invention, and any simple modification, equivalent variation and modification made to the above embodiments according to the technical substance of the present invention are all included in the scope of protection of the technical solution of the present invention.
Claims (4)
1. A folding roof beam tows formula construction elevator which characterized in that: the traction machine comprises a traction machine, a traction rope, a main beam and a folding beam, wherein the main beam is horizontally arranged along the left-right direction, the main beam and the folding beam are two channel steels with openings arranged in a back-to-back mode, an installation space is reserved between the two channel steels, the top and the bottom of the two channel steels are welded into a whole through a horizontal connecting plate, and the right end of the main beam and the folding beam are connected through a hinge assembly to form an integral horizontally arranged overhead beam;
the upper part and the bottom of the girder are respectively provided with two upper beam supports which are opposite front and back and two lower beam supports which are opposite front and back, a third rope guiding wheel which is positioned at the upper left of the first rope guiding wheel is rotatably arranged between the two upper beam supports, and a fourth rope guiding wheel which is positioned at the lower right of the first rope guiding wheel and the lower left of the second rope guiding wheel is rotatably arranged between the two lower beam supports; the traction rope sequentially bypasses the upper right part of the second rope guiding wheel, the upper left part of the third rope guiding wheel, the traction machine, the upper half part and the lower right part of the first rope guiding wheel and the upper left part of the fourth rope guiding wheel from the elevator car to the counterweight;
a plurality of support plates which are vertically arranged are welded in the notches of the channel steel of the main beam and the folding beam, a first support end plate is welded at the right end of the main beam, a second support end plate is welded at the left end of the folding beam, and the right side surface of the first support end plate is contacted with the left side surface of the second support end plate;
the hinge assembly comprises an upper fixed plate, a lower fixed plate, an upper movable plate and a lower movable plate which are respectively provided with two pieces; the lower side edges of the two upper fixing plates are fixedly connected to the right side of the top of the main beam, and the two upper fixing plates are arranged in front-back and front-back pairs; the upper side edges of the two lower fixed plates are fixedly connected to the right side of the bottom of the main beam, the two lower fixed plates are arranged in front-back pairs, the lower side edges of the two upper movable plates are fixedly connected to the left side of the top of the folding beam, and the two upper movable plates are arranged in front-back pairs; the upper side edges of the two lower movable plates are fixedly connected to the left side of the bottom of the folding beam, and the two lower movable plates are arranged in front-back and front-back pairs;
the left ends of the two upper movable plates extend into the space between the right ends of the two upper fixed plates, the two upper movable plates and the two upper fixed plates are connected in an inserting way through upper pin shafts which are horizontally arranged front and back, the left ends of the two lower movable plates extend into the space between the right ends of the two lower fixed plates, and the two lower movable plates and the two lower fixed plates are connected in an inserting way through lower pin shafts which are horizontally arranged front and back;
the two ends of the central shaft of the first rope guiding wheel and the second rope guiding wheel are fixed at the top of the main beam through first U-shaped bolts, the two ends of the central shaft of the third rope guiding wheel are fixed at the upper right side of the upper beam support through second U-shaped bolts, and the two ends of the central shaft of the fourth rope guiding wheel are fixed at the lower left side of the lower beam support through third U-shaped bolts;
two balance lifting lugs are arranged at the top of the right side of the main beam and the top of the upper beam support;
rope stoppers with the same structure are arranged at the outer circumferences of the first rope guiding wheel, the second rope guiding wheel, the third rope guiding wheel and the fourth rope guiding wheel; the rope blocking device comprises two supporting rods which are correspondingly arranged in the front-back direction, a fixing rod which is horizontally arranged along the front-back direction is fixedly arranged between the two supporting rods, and a rotatable sleeve is sleeved outside the fixing rod.
2. A construction method using a folding ceiling beam traction type construction hoist as claimed in claim 1, characterized in that: comprises the steps of,
(1) The main beam and the folding beam which are suitable for the size of the elevator shaft are manufactured according to the size of the section of the elevator shaft, the main beam and the folding beam are respectively 20# channel steel, the horizontal connecting plates and the supporting plates are welded on the main beam and the folding beam, an upper beam support, a lower beam support, a first supporting end plate, an upper fixing plate and a lower fixing plate are welded at the design position of the main beam, and a second supporting end plate, an upper movable plate and a lower movable plate are welded at the design position of the folding beam;
(2) The U-shaped bolts are used for installing a first rope guide wheel, a second rope guide wheel, a third rope guide wheel and a fourth rope guide wheel at the design positions of the main beam, the upper beam support and the lower beam support, supporting rods of rope blocking devices are welded at the proper positions of the main beam and the upper beam support, and fixing rods and sleeves are installed;
(3) Correspondingly inserting two lower movable plates and two lower fixed plates into the lower pin shafts, connecting the left end of the folding beam with the right end of the main beam, and enabling the folding beam to freely droop under the action of self gravity;
(4) The traction machine is arranged at the floor at the bottom of the elevator shaft, so that the transportation and the installation are convenient;
(5) Lifting the main beam and the folding beam in the elevator shaft to a reserved hole and a door opening with proper height for positioning;
(6) The traction rope is connected with the elevator car and the counterweight after bypassing the right upper part of the second rope guiding wheel, the left upper part of the third rope guiding wheel, the traction machine, the upper half part and the right lower part of the first rope guiding wheel and the left upper part of the fourth rope guiding wheel in sequence;
(7) Starting the traction machine to perform various adjustments, so as to ensure the safety and reliability of the up-and-down movement of the elevator car;
(8) After the adjustment is completed, the traction machine is used as a power lifting mechanism to drive the elevator car to be used as a construction elevator;
(9) With the increase of the floor construction height, the construction elevator needs to be lifted to the reserved hole and the door opening of the upper layer for positioning.
3. The construction method of the folding ceiling beam traction type construction lifter according to claim 2, characterized in that: the concrete process of the step (4) is that two hoisting steel wire ropes with the same length are used for being respectively hung on two balance lifting lugs on the left side and two balance lifting lugs on the right side, and the installed main beam and the folding beam are hoisted to the door opening of the elevator shaft through a tower crane or an electric hoist until the folding beam corresponds to the door opening on the right side wall of the elevator shaft left and right, and then the tower crane or the electric hoist is stopped, and at the moment, the main beam is higher than a reserved opening on the left side wall of the elevator shaft; then the folding Liang Xiangyou is rotated, the folding beam stretches into the door opening until the second support end plate at the left end of the folding beam is correspondingly contacted with the first support end plate at the right end of the main beam, and then the upper pin shaft is inserted between the two upper movable plates and the two upper fixed plates;
and (3) restarting the tower crane or the electric hoist, lowering the main beam and the folding beam, stopping the tower crane or the electric hoist when the height of the main beam is consistent with that of a reserved hole on the left side wall of the elevator shaft, horizontally moving the main beam and the folding beam leftwards, extending the left end of the main beam into the reserved hole to stop, restarting the tower crane or the electric hoist, further lowering the main beam and the folding beam, respectively supporting the left end bottom of the main beam and the right end bottom of the folding beam on the bottom plates of the reserved hole and the door opening, stopping the tower crane or the electric hoist, taking down two hoisting steel wire ropes, and simultaneously fixing the right end of the folding beam on the bottom plate of the door opening by using expansion bolts.
4. A construction method of a folding ceiling-beam traction type construction hoist according to claim 3, characterized in that: the specific process of the step (9) is that,
firstly, a counterweight is temporarily fixed on a shaft wall by using a steel tag and a binding steel wire rope through a wall hole left when the shaft wall of an elevator shaft is poured, an elevator car is lowered to the bottom of the shaft, a hoisting steel wire rope coiled at the top of the elevator car in advance is loosened, an expansion bolt is disassembled, the two hoisting steel wire ropes used in the step (4) are respectively hung on the two balance lifting lugs at the left side and the two balance lifting lugs at the right side, a main beam and a folding beam are lifted upwards through a tower crane or an electric hoist, when the two hoisting steel wire ropes are just tightened, the main beam horizontally moves to the right, the left end of the main beam is separated from a reserved hole, the main beam and the folding beam are continuously lifted until the lifting height is larger than the length of the folding beam, then the tower crane or the electric hoist is stopped, an upper pin roll is removed, the pin roll below the folding beam is downwards folded in the door hole, at the moment, the main beam and the folding beam are vertically arranged, then the main beam and the electric hoist are started to continuously lift the main beam and the folding beam upwards,
stopping the tower crane or the electric hoist after the folding beam corresponds to the door opening on the right side wall of the elevator shaft on the upper layer or layers, wherein the main beam is higher than the reserved opening on the left side wall of the elevator shaft on one layer or more layers; then the folding Liang Xiangyou is rotated, the folding beam stretches into the door opening until the second support end plate at the left end of the folding beam is correspondingly contacted with the first support end plate at the right end of the main beam, and then the upper pin shaft is inserted between the two upper movable plates and the two upper fixed plates;
the tower crane or the electric hoist is restarted, the main beam and the folding beam are lowered, when the height of the main beam is consistent with that of a reserved hole on the left side wall of the elevator shaft, the tower crane or the electric hoist is stopped, the main beam and the folding beam are horizontally moved leftwards, the left end of the main beam stretches into the reserved hole to stop, the tower crane or the electric hoist is restarted, the main beam and the folding beam are further lowered, the left end bottom of the main beam and the right end bottom of the folding beam are respectively supported on the bottom plates of the reserved hole and the door opening to stop the tower crane or the electric hoist, two hoisting steel wire ropes are taken down, and the right end of the folding beam is fixed on the bottom plate of the door opening by using expansion bolts;
and then tensioning the traction rope, disassembling the steel tag and the binding steel wire rope which are used for temporarily fixing the weight, and completing heightening and lifting operation after various adjustment.
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| CN110980478B (en) * | 2019-12-30 | 2021-04-20 | 江苏阿尔法电梯制造有限公司 | Construction lifting system |
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| CN117142298B (en) * | 2023-10-31 | 2023-12-26 | 启东凯顺机械制造有限公司 | Transmission device for building site lifter |
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