CN115321359A - Method for installing bridge crane in limited space - Google Patents

Method for installing bridge crane in limited space Download PDF

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Publication number
CN115321359A
CN115321359A CN202211086803.4A CN202211086803A CN115321359A CN 115321359 A CN115321359 A CN 115321359A CN 202211086803 A CN202211086803 A CN 202211086803A CN 115321359 A CN115321359 A CN 115321359A
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China
Prior art keywords
hoist
hoisting
bridge crane
main
trolley
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CN202211086803.4A
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冯鸣嘉
邱瑞
王代发
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China 22MCC Group Corp Ltd
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China 22MCC Group Corp Ltd
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Priority to CN202211086803.4A priority Critical patent/CN115321359A/en
Publication of CN115321359A publication Critical patent/CN115321359A/en
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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
    • B66C13/00—Other constructional features or details
    • B66C13/04—Auxiliary devices for controlling movements of suspended loads, or preventing cable slack
    • B66C13/08—Auxiliary devices for controlling movements of suspended loads, or preventing cable slack for depositing loads in desired attitudes or positions
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C19/00—Cranes comprising trolleys or crabs running on fixed or movable bridges or gantries

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bridges Or Land Bridges (AREA)

Abstract

The invention relates to the technical field of bridge crane installation, in particular to a method for installing a bridge crane in a limited space, which comprises the steps of erecting a supporting platform, installing a hoisting winch and adjusting the hoisting winch by utilizing a girder at the top of a steel structure factory building, then sequentially hoisting a main beam, a secondary beam, an end beam and a trolley of the bridge crane, completing assembly, finally dismantling the supporting platform, installing the hoisting winch and adjusting the hoisting winch, and recovering the original appearance of the steel structure of the factory building; the bridge crane is hoisted by the method, large-scale hoisting equipment is not required to be leased, the construction cost is saved, the occupied space of the equipment used in the method is small, the steel structure of a workshop is not required to be dismantled or damaged, the construction time is shortened, the construction cost is reduced, the bridge crane is transported and loaded immediately, and the bridge crane is not required to be loaded and unloaded.

Description

Method for installing bridge crane in limited space
Technical Field
The invention relates to the technical field of bridge crane installation, in particular to a bridge crane installation method in a limited space.
Background
The bridge crane is widely applied to industrial factory workshops, is an important tool for industrial production hoisting, and has the characteristics of large volume, heavy weight, high height and the like, so that the bridge crane is generally the main technical difficulty in the installation process of industrial production equipment; under the general condition, the bridge crane installation can be installed at the completion initial stage of steel construction factory building construction, but because of reasons such as production condition changes, sometimes still need to install bridge crane in the workshop that the factory building was sealed has been accomplished, at this moment, can install through renting large-scale hoisting equipment usually, not only there is the high problem of lease expense, and simultaneously, because the factory building has been accomplished sealedly, construction space receives reasons such as restriction, still need to make the dismantlement with confined factory building, vacate the large-scale hoisting equipment of being convenient for in great place and remove in factory building department, bridge crane still has the difficulty of taking one's place during hoist and mount, construction cycle is long, and is with high costs, equipment adjustment inflexible scheduling problem.
Disclosure of Invention
The invention aims to solve the problems, and provides a bridge crane installation method which can save construction cost, does not need to damage a workshop structure and does not occupy a limited space of a larger field.
The invention solves the problems and adopts the technical scheme that:
a method for installing a bridge crane in a confined space comprises the following steps:
s1, setting up a supporting platform: a supporting platform is erected between two transverse girders arranged at intervals in a workshop, the supporting platform comprises a main rib and side ribs, the main rib is arranged at the longitudinal central line of the workshop, the side ribs are symmetrically arranged at two sides of the main rib, the main rib and the side ribs are both longitudinally arranged, and two ends of the main rib and two ends of the side ribs are respectively connected to the two girders;
s2, arranging a winch: a hoisting winch is arranged at the half part of the main rib, an adjusting winch is arranged on each side rib, and the hoisting winch and the adjusting winches are arranged in a straight line;
s3, entering a main beam and an auxiliary beam of the bridge crane: when the main beam enters a workshop, the overlooking position of the main beam is required to coincide with a straight line where a hoisting winch and an adjusting winch are located, the middle point of the main beam coincides with the overlooking position of the hoisting winch, and the approach position of the auxiliary beam is consistent with that of the main beam;
s4, hoisting the main beam and the auxiliary beam of the bridge crane in place: hoisting the winch and adjusting the winch to hoist the main beam until wheels at two ends of the main beam are higher than the track beam, and stopping hoisting the winch and adjusting the winch; connecting chain blocks at two ends of a main beam, connecting the chain blocks on steel columns of a workshop at two sides, tensioning the chain blocks, simultaneously lowering steel wire ropes of two side adjusting windlasses, and slowly rotating the main beam until the main beam is vertical to the longitudinal central line of the workshop; finally, operating the hoisting winch to lower the main beam to enable wheels at two ends of the main beam to fall in the track of the track beam, wherein the hoisting method of the auxiliary beam is consistent with that of the main beam;
s5, entering a bridge crane end beam: the method comprises the following steps that end beams of the automobile loading bridge crane enter a workshop, and the overlooking positions of the two end beams are required to be respectively located at two ends of a main beam and located between the main beam and a secondary beam;
s6, hoisting the end beam of the bridge crane in place: after the traction ropes are hung on the end beams, the two end beams are respectively hoisted by utilizing the adjusting winches on the two sides, and after the end beams are hoisted to the specified height, the traction ropes are tightened to ensure that the end beams are fixed between the main beam and the auxiliary beam;
s7, the bridge crane trolley enters a workshop: loading a bridge crane trolley by an automobile to enable the trolley to be located between a main beam and a secondary beam, enabling the center of the trolley to be superposed with the overlooking position of a hoisting winch, hoisting the trolley by the hoisting winch and an adjusting winch after a traction rope is hung on the trolley, stopping hoisting until wheels of the trolley are higher than travelling rails on the main beam and the secondary beam, connecting chain blocks at two ends of the trolley, connecting the chain blocks on workshop steel columns at two sides, tensioning the chain blocks, simultaneously lowering steel wire ropes of the adjusting winch at two sides, enabling the trolley to slowly rotate, enabling wheels of the trolley to be aligned with the travelling rails, and then controlling the hoisting winch to slowly lower the trolley to enable the trolley to fall on the travelling rails on the main beam and the secondary beam;
s8, dismantling the supporting platform: and dismantling the hoisting winch, adjusting the winch, the supporting platform and the chain block, and recovering the original appearance of the steel structure of the workshop.
Preferably, in step S1, the support platform further includes reinforcing ribs arranged throughout the length, and the reinforcing ribs connect the center beam and the side beams.
Preferably, in step S2, an included angle between a straight line where the hoisting winch and the plurality of adjusting winches are located and a longitudinal center line of the workshop is not more than 65 °.
Preferably, in the step S4, when the main beam and the auxiliary beam are hoisted, the main beam and the auxiliary beam are hoisted in a manner of a big pocket at the bottom, steel wire ropes are hung on the hoisting winch and the two adjusting winches, the steel wire ropes must be kept vertical in the hoisting process, and the hoisting winch and the two adjusting winches are synchronously started to hoist.
Compared with the prior art, the invention adopting the technical scheme has the prominent characteristics that:
the bridge crane is hoisted in a workshop by the method without leasing large-scale hoisting equipment, so that the construction cost is saved, the hoisting winch and the adjusting winch are used for hoisting and lowering, the hoisting piece is stabilized by the hoisting winch in the middle, meanwhile, the direction of the hoisting piece can be adjusted by the adjusting winch, the hoisting can be completed quickly, meanwhile, the bridge crane can be reversely dismantled by the method, and the bridge crane can be quickly disassembled and assembled in a narrow space; the method has the advantages that the occupied space of the used equipment is small, the steel structure of a workshop does not need to be dismantled or damaged, the construction time is shortened, the construction cost is reduced, the purposes of transporting and loading immediately and unloading are achieved, and the method is free from loading and unloading.
Drawings
FIG. 1 is a schematic structural diagram of a bridge crane according to an embodiment of the present invention during installation;
FIG. 2 is a schematic structural diagram of a support platform according to an embodiment of the present invention;
FIG. 3 is a schematic structural view of a main beam of an embodiment of the present invention when entering a field;
FIG. 4 is a schematic structural view of the main beam during adjustment according to the embodiment of the present invention;
FIG. 5 is a schematic structural view of the main beam, the secondary beam and the end beam of the embodiment of the present invention during installation;
FIG. 6 is a schematic structural view of the cart according to the embodiment of the present invention.
In the figure: 1. a girder; 2. a main rib; 3. side ribs; 4. reinforcing ribs; 5. hoisting a winch; 6. adjusting the winch; 7. a track beam; 8. workshop steel columns; 9. a main beam; 10. a secondary beam; 11. a trolley; 12. chain rewinding; 13. an end beam.
Detailed Description
The invention will be further illustrated by the following examples, which are intended only for a better understanding of the present invention and therefore do not limit the scope of the invention.
As shown in fig. 1 to 6, a method for installing a bridge crane in a confined space comprises the following steps:
s1, building a supporting platform: a supporting platform is erected between two transverse girders 1 arranged at intervals in a workshop, the supporting platform comprises a main rib 2, two side ribs 3 and three to six reinforcing ribs 4, the main rib 2 is arranged at the longitudinal central line of the workshop, the side ribs 3 are symmetrically arranged at two sides of the main rib 2, the main rib 2 and the side ribs 3 are longitudinally arranged, two ends of the main rib 2 and two ends of the side ribs 3 are respectively connected to the two girders 1, and the reinforcing ribs 4 are arranged in a full length mode and are connected with a central beam and a side beam; the main ribs 2 and the side ribs 3 are made of H-shaped steel, and the reinforcing ribs 4 are made of channel steel.
S2, arranging a winch: a hoisting winch 5 is fixed at one half of the main rib 2, an adjusting winch 6 is fixed on each side rib 3, and the hoisting winch 5 and the two adjusting winches 6 are arranged in a straight line; the included angle between the straight line where the hoisting winch 5 and the two adjusting winches 6 are located and the longitudinal center line of the workshop is not more than 65 degrees, the two sides of the hoisting winch 5 are hoisted on the main rib 2, and the two sides of the adjusting winch 6 are welded with stop blocks on the side ribs 3, so that the hoisting winch 5 and the adjusting winch 6 can be prevented from moving horizontally.
S3, entering a main beam 9 and an auxiliary beam 10 of the bridge crane: when the main beam 9 enters a workshop, the overlooking position of the main beam 9 is required to be coincident with the straight line where the hoisting winch 5 and the adjusting winch 6 are located, the middle point of the main beam 9 is coincident with the overlooking position of the hoisting winch 5, and the approach position of the auxiliary beam 10 is consistent with that of the main beam 9.
S4, hoisting the main beam 9 and the auxiliary beam 10 of the bridge crane in place: the hoisting winch 5 and the two adjusting winches 6 are respectively connected with steel wire ropes in a hanging manner, the steel wire ropes of the hoisting winch 5 are tensioned and fixed at one half of the main beam 9, the steel wire ropes of the two adjusting winches 6 are respectively tensioned and fixed at two ends of the main beam 9, the hoisting is carried out in a mode of a big pocket at the bottom, the steel wire ropes are required to be kept vertical in the hoisting process, and the hoisting winch 5 and the two adjusting winches 6 are required to be synchronously started for hoisting;
hoisting the winch 5 and adjusting the winch 6 to hoist the main beam 9 until the wheels at the two ends of the main beam 9 are higher than the track beam 7, and stopping hoisting the winch 5 and adjusting the winch; connecting a chain block 12 at two ends of a main beam 9, connecting the chain block 12 on a workshop steel column 8 at two sides, tensioning the chain block 12, simultaneously lowering steel wire ropes of two side adjusting windlasses 6, and slowly rotating the main beam 9 until the main beam 9 is vertical to the longitudinal central line of the workshop; and finally, operating the hoisting winch 5 to lower the main beam 9, so that wheels at two ends of the main beam 9 fall in the track of the track beam 7, and the hoisting method of the auxiliary beam 10 is consistent with that of the main beam 9.
S5, entering a bridge crane end beam 13: the end beams 13 of the automobile loading bridge crane enter a workshop, and the overlooking positions of the two end beams 13 are respectively positioned at two ends of the main beam 9 and between the main beam 9 and the auxiliary beam 10.
S6, hoisting the end beam 13 of the bridge crane in place: after the traction rope is hung on the end beam 13, the two end beams 13 are respectively hoisted by utilizing the adjusting winches 6 at the two sides, after the end beam 13 is lifted to a specified height, the traction rope is tightened, and the two ends of the end beam 13 are respectively and fixedly connected to the main beam 9 and the auxiliary beam 10.
S7, the bridge crane trolley 11 enters a workshop: the method comprises the steps that a trolley 11 of the automobile loading bridge crane is parallel to a main beam 9 and is located between the main beam 9 and a secondary beam 10, the center of the trolley 11 is enabled to be coincident with the overlooking position of a hoisting winch 5, after traction ropes are hung in the middle and two ends of the trolley 11, the trolley is hoisted by the hoisting winch 5 and an adjusting winch 6, the trolley 11 stops hoisting after wheels of the trolley 11 are higher than travelling rails on the main beam 9 and the secondary beam 10, chain blocks 12 are connected to two ends of the trolley 11, the chain blocks 12 are connected to workshop steel columns 8 on two sides, steel wire ropes of the adjusting winch 6 on two sides are tensioned and lowered simultaneously by the chain blocks 12, the trolley 11 rotates slowly by 90 degrees, wheels of the trolley 11 are aligned with the travelling rails, and then the hoisting winch 5 is controlled to slowly lower the trolley 11, so that the trolley 11 falls on the travelling rails on the main beam 9 and the secondary beam 10.
S8, dismantling the supporting platform: and (3) dismantling the hoisting winch 5, adjusting the hoisting winch 6, the supporting platform and the chain block 12, and recovering the original appearance of the steel structure of the factory building.
By the method, the bridge crane is hoisted in a workshop without leasing large-scale hoisting equipment, so that the construction cost is saved, the middle hoisting winch 5 is responsible for adjusting and controlling the height of hoisting pieces (the main beam 9, the auxiliary beam 10, the end beam 13 and the trolley 11), the hoisting pieces can be rotated and adjusted to a proper direction by adjusting the winches 6 at two sides, and the bridge crane can be quickly disassembled and assembled in a narrow space; occupation space is less, need not to demolish or destroy the workshop steel construction, has shortened the engineering time, has reduced construction cost, has realized transporting promptly and has adorned promptly, need not the loading and unloading.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the scope of the present invention, which is defined in the appended claims.

Claims (4)

1.一种受限空间内的桥式起重机安装方法，其特征在于，包括如下步骤：1. a bridge crane installation method in a confined space, is characterized in that, comprises the steps: S1，搭设支撑平台：在车间间隔设置的两根横向大梁之间搭设支撑平台，支撑平台包括主筋和侧筋，主筋设置在车间纵向中心线处，侧筋对称布置在主筋两侧，主筋和侧筋均纵向设置且两端分别连接在两大梁上；S1, Erection of supporting platform: A supporting platform is erected between two transverse girders set at intervals in the workshop. The supporting platform includes main reinforcement and side reinforcement. The ribs are arranged longitudinally and the two ends are respectively connected to the two beams; S2，布置卷扬机：在主筋二分之一处设置有吊装卷扬机，在每个侧筋上均设置有调整卷扬机，吊装卷扬机和若干调整卷扬机呈一条直线布置；S2, Arranging the hoist: a hoisting hoist is installed at half of the main reinforcement, and an adjustment hoist is arranged on each side reinforcement, and the hoisting hoist and several adjustment hoists are arranged in a straight line; S3，桥式起重机的主梁、副梁进场：主梁进入车间时，要求主梁的俯视位置与吊装卷扬机和调整卷扬机所在的直线重合，且主梁的中点与吊装卷扬机的俯视位置重合，副梁进场位置与主梁一致；S3, the main girder and auxiliary girder of the bridge crane enter the site: when the main girder enters the workshop, the overlooking position of the main girder is required to coincide with the straight line where the hoisting hoist and the adjusting hoist are located, and the midpoint of the main girder coincides with the overlooking position of the hoisting hoist , the entry position of the sub-beam is consistent with that of the main beam; S4，桥式起重机主梁和副梁吊装就位：吊装卷扬机和调整卷扬机吊装主梁至主梁两端的车轮高出轨道梁后，吊装卷扬机和调整卷扬停止；在主梁两端连接倒链，倒链在两侧连接车间钢柱上，拉紧倒链同时下放两边调整卷扬机的钢丝绳，使主梁缓慢旋转，直至主梁与车间纵向中心线垂直；最后操纵吊装卷扬机下放主梁，使主梁两端车轮落在轨道梁的轨道中，副梁吊装方法与主梁一致；S4, the main girder and auxiliary girder of the bridge crane are hoisted in place: hoist the hoist and adjust the hoist to hoist the main girder until the wheels at both ends of the main girder are higher than the track beam, then hoist the hoist and adjust the hoist to stop; connect the down chain at both ends of the main girder , the upside-down chain is connected to the steel column of the workshop on both sides, and the upside-down chain is tightened while lowering the wire ropes of the hoist on both sides to make the main beam rotate slowly until the main beam is perpendicular to the longitudinal center line of the workshop; finally, the main beam is lowered by manipulating the hoisting hoist The wheels at both ends of the beam fall into the track of the track beam, and the hoisting method of the sub-beam is the same as that of the main beam; S5，桥式起重机端梁进场：汽车装载桥式起重机端梁进入车间，要求两个端梁的俯视位置分别位于主梁的两端，且位于主梁和副梁之间；S5, bridge crane end girders enter the site: the car loads the bridge crane end girders into the workshop, and the overlooking positions of the two end girders are required to be located at both ends of the main girder and between the main girder and the auxiliary girder; S6，桥式起重机端梁吊装就位：端梁挂好牵引绳后，利用两边的调整卷扬机分别吊装两个端梁，端梁提升至指定高度后，收紧牵引绳，使端梁固定在主梁和副梁之间；S6, the end girder of the bridge crane is hoisted in place: After the end girder is hung with the traction rope, use the adjusting hoist on both sides to hoist the two end girders respectively. After the end girder is lifted to the specified height, tighten the traction rope to fix the end beam on the main Between beam and sub-beam; S7，桥式起重机小车进入车间：汽车装载桥式起重机小车使小车位于主梁与副梁之间，且小车中心与吊装卷扬机的俯视位置重合，小车挂好牵引绳后用吊装卷扬机和调整卷扬机起吊，吊装至小车车轮高出主梁和副梁上的行车轨道后停止提升，在小车两端连接倒链，倒链在两侧连接车间钢柱上，拉紧倒链同时下放两边调整卷扬机的钢丝绳，使小车缓慢旋转，使小车车轮对准行车轨道，然后控制吊装卷扬机缓慢下放小车，使小车落在主梁和副梁上的行车轨道上；S7, the bridge crane trolley enters the workshop: the vehicle loads the bridge crane trolley so that the trolley is located between the main girder and the sub-beam, and the center of the trolley coincides with the overlooking position of the hoisting hoist. After the trolley is hung with the traction rope, use the hoisting hoist and the adjustment hoist to lift the trolley , hoist the trolley until the wheels of the trolley are higher than the driving rails on the main beam and sub-beam, and then stop lifting. Connect the two ends of the trolley to the down chain, and the down chain is connected to the steel column on both sides of the workshop. Tighten the down chain and lower both sides to adjust the wire rope of the hoist , so that the trolley rotates slowly, so that the wheels of the trolley align with the driving track, and then control the hoisting hoist to slowly lower the trolley, so that the trolley falls on the driving track on the main beam and the auxiliary beam; S8，支撑平台拆除：拆除吊装卷扬机、调整卷扬机、支撑平台和倒链，恢复厂房钢结构原貌。S8, support platform dismantling: remove hoisting hoist, adjust hoist, support platform and chain down, and restore the original steel structure of the workshop. 2.根据权利要求1所述的受限空间内的桥式起重机安装方法，其特征在于：步骤S1中，支撑平台还包括通长设置的加固筋，加固筋连接中心梁和侧梁。2. The method for installing a bridge crane in a confined space according to claim 1, characterized in that: in step S1, the support platform further includes reinforcement ribs arranged throughout the length, and the reinforcement ribs connect the central girder and the side girders. 3.根据权利要求1所述的受限空间内的桥式起重机安装方法，其特征在于：步骤S2中，吊装卷扬机和若干调整卷扬机所在的直线与车间纵向中心线的夹角不大于65°。3. The method for installing a bridge crane in a confined space according to claim 1, characterized in that in step S2, the angle between the straight line where the hoisting hoist and several adjustment hoists are located and the longitudinal centerline of the workshop is not greater than 65°. 4.根据权利要求1所述的受限空间内的桥式起重机安装方法，其特征在于：步骤S4中，吊装主梁、副梁时，采用底部大兜的方式吊装，吊装卷扬机和两个调整卷扬机上均挂接有钢丝绳，钢丝绳在吊装过程中必须保持垂直，且吊装卷扬机和两个调整卷扬机要同步启动进行吊装。4. The installation method of a bridge crane in a confined space according to claim 1, characterized in that: in step S4, when hoisting the main girder and the sub-girder, the hoisting hoist is hoisted and the two adjusting Steel wire ropes are attached to the hoist, and the wire rope must be kept vertical during the hoisting process, and the hoisting hoist and the two adjustment hoists must be started synchronously for hoisting.
CN202211086803.4A 2022-09-07 2022-09-07 Method for installing bridge crane in limited space Pending CN115321359A (en)

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Application publication date: 20221111