CN113460876B - Method for installing upper component of quay crane - Google Patents
Method for installing upper component of quay crane Download PDFInfo
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- CN113460876B CN113460876B CN202110900871.9A CN202110900871A CN113460876B CN 113460876 B CN113460876 B CN 113460876B CN 202110900871 A CN202110900871 A CN 202110900871A CN 113460876 B CN113460876 B CN 113460876B
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- 238000000034 method Methods 0.000 title claims abstract description 28
- 238000009434 installation Methods 0.000 claims abstract description 20
- 238000013461 design Methods 0.000 claims abstract description 18
- 238000003466 welding Methods 0.000 claims abstract description 12
- 230000007246 mechanism Effects 0.000 claims description 6
- 229910000831 Steel Inorganic materials 0.000 description 16
- 239000010959 steel Substances 0.000 description 16
- 238000004519 manufacturing process Methods 0.000 description 5
- 230000002265 prevention Effects 0.000 description 4
- 238000007689 inspection Methods 0.000 description 3
- 238000005192 partition Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000001186 cumulative effect Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 238000013102 re-test Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Classifications
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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
- B66C6/00—Girders, or track-supporting structures, specially adapted for cranes
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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
- B66C7/00—Runways, tracks or trackways for trolleys or cranes
- B66C7/08—Constructional features of runway rails or rail mountings
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention discloses a method for installing an upper component of a quay crane, which comprises the following steps: providing a jig frame, and placing a rear girder on the jig frame; providing a sea side upper beam and a land side upper beam which are respectively arranged at corresponding positions on the rear girder; the central lines of the sea side upper cross beam and the land side upper cross beam are used as horizontal references to adjust the levelness of the rear girder; ensuring that the distance between the central lines of the sea side upper cross beam and the land side upper cross beam meets the design requirement and then welding; installing the ladder frame onto the sea side upper cross beam of the rear girder; ensuring that the perpendicularity of the ladder frame relative to the ground, the perpendicularity of the ladder frame relative to the center line of the rear girder and the perpendicularity of the ladder frame meet the design requirements and then welding; mounting a rear stay bar to be respectively connected with the ladder frame and the rear girder; a post-installation girder pull rod system; connecting the front girder with the rear girder, and adjusting the center line of the front girder and the center line of the rear girder to meet the design requirement; installing a front girder pull rod system; and integrally hoisting the upper assembly of the shore bridge to the door frame structure of the shore bridge.
Description
Technical Field
The invention relates to the field of container hoisting, in particular to a method for installing an upper component of a shore container crane.
Background
The upper assembly of the shore container crane mainly comprises a front girder, a rear girder, a ladder frame, a rear stay bar, a machine room, a front girder pull rod system, a rear girder pull rod system and the like, and is assembled by the means of hinging, welding or high-strength bolt connection and the like.
In the prior art, because errors exist in the structural manufacturing and assembling processes of all parts, various errors are accumulated together, so that the problems that rib plates of a machine room support are not corresponding to main beam partition plates, the centering deviation of a front girder and a rear girder, the height difference of girder tracks is out of tolerance, the stress of a pull rod is out of tolerance and the like are possibly caused, the problems can increase the difficulty of subsequent adjustment, and the progress of the total assembly of a shore bridge is also possibly seriously influenced.
Disclosure of Invention
The object of the invention is to reduce the cumulative errors in the assembly of the upper components of the quay crane.
In order to solve the technical problems, the embodiment of the invention provides a method for installing an upper component of a quay crane, which can be used for installing the upper component of a quay container crane, and comprises the following steps: providing a jig frame, and placing a rear girder on the jig frame; providing a sea side upper beam and a land side upper beam, and respectively installing the sea side upper beam and the land side upper beam at corresponding positions on a rear girder; the central lines of the sea side upper cross beam and the land side upper cross beam are used as horizontal references to adjust the levelness of the rear girder; ensuring that the distance between the central lines of the sea side upper cross beam and the land side upper cross beam meets the design requirement and then welding; installing the ladder frame onto the sea side upper cross beam of the rear girder; ensuring that the perpendicularity of the ladder frame relative to the ground, the perpendicularity of the ladder frame relative to the center line of the rear girder and the perpendicularity of the ladder frame meet the design requirements and then welding; mounting a rear stay bar to be respectively connected with the ladder frame and the rear girder; a post-installation girder pull rod system; connecting the front girder with the rear girder, and adjusting the center line of the front girder and the center line of the rear girder to meet the design requirement; installing a front girder pull rod system; and integrally hoisting the upper assembly of the shore bridge to the door frame structure of the shore bridge.
By adopting the technical scheme, the accumulated errors of all parts of the upper assembly of the shore bridge caused by structural manufacturing errors, assembly errors and the like are reduced, the manufacturing precision of the shore bridge is improved, and the centering and straightness of the front girder and the rear girder are ensured.
Further, the step of providing a sea side upper beam and a land side upper beam, and respectively installed at corresponding positions on the rear girder, and adjusting the levelness of the rear girder with the center lines of the sea side upper beam and the land side upper beam as horizontal references, further comprises: when the central lines of the sea side upper cross beam and the land side upper cross beam are used as horizontal references to adjust the rear girder, the error of levelness of the rear girder is ensured to be +/-3 mm.
Further, after the step of providing the sea side upper beam and the land side upper beam and being installed at the respective positions on the rear girder, adjusting the levelness of the rear girder with respect to the center lines of the sea side upper beam and the land side upper beam as horizontal references, comprising: and installing a ladder platform.
Further, the step of mounting the ladder frame onto the sea side upper cross member of the rear girder further includes: the upper pull rod of the front girder pull rod system is fixedly connected with the ladder frame respectively, and is integrally hoisted to the sea side upper cross beam to fix the ladder frame.
Further, after the step of welding after ensuring that the perpendicularity of the ladder frame relative to the ground, the perpendicularity of the ladder frame relative to the center line of the rear girder and the perpendicularity of the ladder frame meet the design requirements, the welding method comprises the following steps of: and checking the perpendicularity of the trapezoid rack.
Further, in the step of installing the rear stay bar so that the rear stay bar is connected with the ladder frame and the rear girder respectively, when the rear stay bar is hoisted, the rear stay bar is connected with the rear girder first, and then the rear stay bar is connected with the ladder frame.
Further, prior to the step of installing the rear girder tie system, comprising: and (5) installing a machine room.
Further, the step of installing the rear girder tie system further comprises: installing a product platform, fixing a support frame by taking the central line of the land side upper cross beam as a reference, and fixedly connecting a support frame base after the verticality is qualified; when the rear girder Liang Chenggan is installed, the upper stay bar of the rear girder is installed first, then the lower stay bar of the rear girder is installed, and the upper end of the rear girder Liang Chenggan is installed first, then the lower end of the stay bar of the rear girder is installed.
Further, the step of installing the rear girder tie system further comprises: the lifting lug at the tail part of the rear girder is used for assisting in lifting the rear large support Liang Chenggan, and the base backing plate of the support frame is increased or decreased to ensure the straightness of the stay bar.
Further, the step of connecting the front girder with the rear girder and adjusting the center line of the front girder and the center line of the rear girder to meet the design requirement, further comprises: providing a jig frame, arranging the front girder structural member on the jig frame, movably connecting the front girder with the rear girder, and adjusting the levelness and the straightness of the front girder and the rear girder.
Further, the step of installing the front girder tie system further comprises: measuring the actual length of the front girder pull rod system, and calculating and customizing a connecting piece; connecting and installing part of pull rods in the front girder pull rod system with the front girder and connecting pieces; the front girder is pitching to 80 degrees with the ground horizontal line through a pitching mechanism, and a front girder pull rod system is connected and installed.
Further, in the step of installing the front girder drawbar system, an auxiliary lifting lug is provided on the connection member.
Drawings
FIG. 1 is a schematic view of an upper assembly of a quay crane;
FIG. 2 is a schematic illustration of a shore bridge front girder tie-bar system;
FIG. 3 is a schematic illustration of a shore bridge rear girder tie-bar system;
fig. 4 is a flow chart of a method of installing an upper assembly of a quayside container crane.
FIG. 5 is a schematic view of a ladder mounting of an embodiment of the invention;
FIG. 6 is a schematic view of a ladder centerline, rear girder centerline;
FIG. 7 is a schematic illustration of the rear stay installation of an embodiment of the present invention;
FIG. 8 is a schematic illustration of the installation of a rear girder tie system according to an embodiment of the present invention;
FIG. 9 is a schematic illustration of a front girder tie rod installation dimension measurement of an embodiment of the present invention;
FIG. 10 is a schematic view of a connector provided with auxiliary lifting lugs according to an embodiment of the present invention;
FIG. 11 is a schematic illustration of a front girder tie bar connection installation of an embodiment of the present invention;
in the above figures, the reference numerals correspond to the component names as follows:
1-front girder, 2-front girder pull rod system, 20-front girder pull rod, 201-front girder pull rod, 202-front girder pull rod, 203-front girder pull rod, 204-front girder pull rod, 205-front girder pull rod, 21-front girder connector, 211-front girder connector, 212-front girder connector, 22-front girder connector auxiliary lifting lug, 3-ladder, 31-ladder center line, 4-rear brace, 5-rear girder pull rod system, 50-rear girder pull rod, 501-rear girder pull rod, 502-rear girder pull rod, 51-rear girder connector, 52-support frame, 6-rear girder, 61-rear girder center line, 62-rear girder auxiliary lifting lug, the device comprises a 7-machine room, an 8-sea side upper beam, a 9-land side upper beam, a 10-steel wire rope, a 101-hoisting steel wire rope, a 102-wave steel wire rope, an 11-pull rod connecting platform, a 12-node plate, a 121-trapezoid frame land side node plate, a 122-node plate, a 13-pin roll, a 131-trapezoid frame pin roll, a 132-support frame pin roll, a 133-support frame pin roll, a 134-lower end pin roll, a 14-front girder node plate, a 15-front girder node plate, a 16-assembly formed by a front girder connecting piece 211, a front girder pull rod 202 and a front girder pull rod 203, a 17-assembly formed by a front girder connecting piece 212 and a front girder pull rod 205, and a direction from the land side to the sea side.
Detailed Description
Further advantages and effects of the present invention will become apparent to those skilled in the art from the disclosure of the present specification, by describing the embodiments of the present invention with specific examples. While the description of the invention will be described in connection with the preferred embodiments, it is not intended to limit the inventive features to the implementation. Rather, the purpose of the invention described in connection with the embodiments is to cover other alternatives or modifications, which may be extended by the claims based on the invention. The following description contains many specific details for the purpose of providing a thorough understanding of the present invention. The invention may be practiced without these specific details. Furthermore, some specific details are omitted from the description in order to avoid obscuring the invention. It should be noted that, without conflict, the embodiments of the present invention and features of the embodiments may be combined with each other.
It should be noted that in this specification, like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.
In the description of the present embodiment, it should be noted that the azimuth or positional relationship indicated by the terms "upper", "lower", "inner", "bottom", etc. are based on the azimuth or positional relationship shown in the drawings, or the azimuth or positional relationship in which the inventive product is conventionally put in use, are merely for convenience of describing the present invention and simplifying the description, and are not indicative or implying that the apparatus or element to be referred to must have a specific azimuth, be configured and operated in a specific azimuth, and therefore should not be construed as limiting the present invention.
For the purpose of making the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.
The installation method provided by the embodiment of the invention can be applied to the installation process of the upper component of the shore container crane, which is exemplified by fig. 1-3.
A quay container crane, simply called a quay bridge or a bridge crane, is specialized equipment for handling container ships by container terminals, and is generally installed on the quay side of a port. Fig. 1 shows the components of the upper part of the quay crane, which mainly comprises the front girder 1, the rear girder 6, the sea side upper girder 8, the land side upper girder 9, the ladder frame 3, the rear stay 4, the front girder drawbar system 2 and the rear girder drawbar system 5, the machine room 7 and the mounting platform as well as other accessories, the support frame 52, etc. The front girder 1 is a girder extending from the quay to the sea surface direction. In one embodiment, the front girder 1 is capable of pitching motion around the large Liang Jiaodian. The rear girder 6 is a girder extending from the quay to the land direction. The sea side upper cross beam 8 and the land side upper cross beam 9 are both transversely arranged on the rear girder 6. The ladder frame 3 is parallel to the sea side upper cross member 8 and is provided thereon. The rear stay bar 4 is arranged on the rear girder 6 and is used for connecting the ladder frame 3 and the land side upper cross beam 9, and the rear stay bar 4 provides rigid support for the ladder frame 3 and the land side upper cross beam. The front girder 1 is connected with the ladder frame 3 through double rows of pull rods of the front girder pull rod system 2, and the rear girder 6 is connected with the ladder frame 3 through stay rods of the rear girder pull rod system 5. The machine room 7 is used for ensuring that the working mechanism of the shore bridge can work in good environments of all weather, dust prevention, rain prevention, sun prevention, heat prevention and air circulation.
Fig. 2 is a schematic diagram of a front girder pull rod system 2, wherein the front girder pull rod system 2 is a multi-degree-of-freedom connecting rod system, mainly comprises an H-shaped steel structure, the upper ends of two-angle pull rods in a double-row pull rod are respectively fixed on a ladder frame 3, and the lower ends of the two-angle pull rods are fixed on two side box girders of a front girder 1. When the shore bridge is in a working state, the front girder pull rod system 2 can exert a pulling force on the front girder 1, so that instability during front and back operation of the trolley frame is avoided.
Fig. 3 is a schematic diagram of a rear girder pull rod system 5, wherein the rear girder pull rod system 5 is mainly of a steel tube structure, double-row pull rods are symmetrically arranged, the upper end of a rear girder support rod 50 is connected with a ladder-shaped frame 3, and the lower end of the rear girder support rod is connected with two side box girders of a rear girder 6. The rear girder pull rod system 5 can balance the front girder pull rod system 2, so that the front girder 1 and the rear girder 6 can work safely and stably. The support frame 52 is used for connecting the rear girder connection piece 51 of the double-row tie rod of the rear girder 6 with the land side upper cross beam 9.
Although illustrated as a double box girder quay upper assembly, the method of installing the quay upper assembly is also applicable to other quays, such as single box girder quay.
As shown in fig. 4, an embodiment of the present invention provides a method for installing an upper assembly of a quay crane, including the steps of:
in S1, a jig frame arranged at a quay pile location is provided, and the rear girder 6 structural members are suspended on the respective low jig frames.
In S2, the sea side upper cross member 8 and the land side upper cross member 9 are provided, and each of them is welded to the rear girder 6 according to design requirements.
In S3, the levelness of the rear girder 6 is adjusted with the center lines of the sea side upper cross beam 8 and the land side upper cross beam 9 as horizontal references, specifically, the center lines of the sea side upper cross beam 8 and the land side upper cross beam 9 are leveled with the reference, and the levelness is ensured to be within ±3mm. Ensuring that the jig frame corresponds to the box body inner partition plate of the shore bridge box girder. Subsequently, the ladder platform of the rear girder 6, the ladder platform of the sea side upper cross member 8, and the ladder platform of the land side upper cross member 9 and other accessories are installed.
In S4, in order to facilitate the installation of the rear stay 4, measuring devices such as theodolites, steel rules or the like are used to retest the distance between the center line of the sea side upper beam 8 and the center line of the land side upper beam 9, and welding is performed after the distances meet the design requirements.
Fig. 5 is a schematic view of the installation of the ladder 3 in the direction from the land side to the sea side, i.e., the a direction. As shown in fig. 5, the ladder frame 3 has a trapezoid shape when viewed from the land side to the sea side. In S5, the ladder frame 3 is mounted onto the sea side upper cross member 8 of the rear girder 6. Specifically, the front girder tie rods 201 and 204 in the front girder tie rod system 2 are respectively connected and mounted with the ladder frame 3, and are fixed by binding or the like. Further, the ladder frame 3 connected with and installed with the front girder pull rod 201 and the front girder pull rod 204 is integrally hoisted to the sea side upper cross beam 8 above the rear girder 6 structural member by using the hoisting steel wire rope 101, the process support is arranged on the sea side upper cross beam 8 to position and connect the ladder frame 3, and the ladder frame 3 is fixed by using the corrugated steel wire rope 102.
As shown in fig. 6, in S6, the perpendicularity of the ladder frame 3 to the ground horizontal line, and the perpendicularity of the ladder frame center line 31 to the rear girder center line 61 are measured and adjusted. And checking the perpendicularity of the trapezoid frame 3 by means of laser checking and the like, and welding after the trapezoid frame is qualified.
In fig. 7, the ladder 3 has a trapezoidal shape as shown in fig. 5, in a direction from the land side to the sea side, i.e., a direction. As shown in the installation schematic view of the rear stay 4 in fig. 7, in S7, the rear stay 4 is installed so as to be connected to the ladder frame 3 and the rear girder 6, respectively. Specifically, when the rear stay 4 is lifted and suspended, the upper and lower ends of the rear stay 4 are connected to the gusset plates 12, respectively. Namely, the lower end of the rear stay 4 is inserted into the node plate 122 of the land side upper cross beam 9, the rear stay 4 is connected with the rear girder 6, the upper end of the rear stay 4 is inserted into the ladder land side node plate 121, and the rear stay 4 is connected with the ladder 3.
When the machine room 7 is installed, the rib plates of the support of the machine room 7 are corresponding to the main beam partition plates, so that uneven stress of the rear girder 6 is avoided.
As shown in fig. 8, the rear girder drawbar system 5 is installed in S8. The product platform is installed on the ground, the supporting frame 52 of the girder pull rod system 5 is installed on the ground in a lifting mode, the supporting frame 52 is installed in a positioning mode by taking the central line of the land side upper cross beam 9 as a reference, the steel wire rope 102 of the wave wind is pulled, and after the verticality of the steel wire rope is measured to be qualified, the supporting frame base is welded in a positioning mode. When the rear girder pull rod system 5 is installed, the upper stay rod of the rear girder pull rod system 5 is installed first, then the lower stay rod of the rear girder pull rod system 5 is installed, and then the upper end of the stay rod is installed first and then the lower end of the stay rod is installed. Specifically, when the rear girder brace 501 in the rear girder brace system 5 is hoisted, the rear girder brace 501 is hoisted in place and then is respectively connected and installed with the pin shafts 13 of the ladder-shaped frame 3 and the supporting frame 52. Namely, the ladder frame pin shaft 131 on one side of the ladder frame 3 of the girder support 501 is connected and installed firstly, and then the support frame pin shaft 132 on one side of the support frame 52 of the girder support 501 is connected and installed; the installation sequence can reduce the difficulty of the high-altitude operation and shorten the period of the high-altitude operation. When the rear girder brace 502 in the rear girder brace system 5 is hoisted, after the rear girder brace 502 is hoisted in place, the support frame pin shafts 133 on one side of the support frame 52 of the rear girder brace 502 are connected and installed, and then the lower end pin shafts 134 of the rear girder brace 502 are connected and installed. The mounting sequence has the advantages that the mounting difficulty is transferred to the lower end pin shaft 134, so that the operation of constructors is facilitated, the safety of the operation is improved, and the risk of the operation is reduced.
Since the rear girder 6 bears the weight of the machine room and the tail mechanism parts, the structural member generates a small amount of downwarping. Therefore, in order to ensure the smooth installation of the rear girder brace 502, the rear girder auxiliary lifting lug 62 at the tail part of the rear girder 6 is used for auxiliary lifting, so that compared with the installation method of using binding to construct lifting or arranging a lifting device on a jig frame to lift and finely tune in the prior practice, the installation difficulty caused by downwarping of a steel structure is reduced. In order to ensure that the rear girder stay 501, the rear girder connecting piece 51 and the rear girder stay 502 are in a straight line, no included angle is formed, and the adjustment and the reduction of the base plate of the supporting frame 52 can be realized.
In S9, another jig frame is provided, which is arranged at the same quay as the rear girder 6, on which the structural members of the front girder 1 are suspended. The arrangement of the bed-work of the front girder 1 at the same quay as the rear girder 6 is advantageous in reducing the transfer of the front girder 1 and the rear girder 6. After the front girder 1 is hinged with the rear girder 6, the front girder 1 is adjusted to be horizontal. Further, the centers of the front girder 1 and the rear girder 6 are on the same straight line, no included angle exists, the deflection of the front girder and the rear girder is released, the centering degree and the straightness degree of the front girder 1 and the rear girder 6 are ensured, the problems of high-low deviation and ultra-poor tension rod of girder tracks are solved, and the jolt in the running process of a trolley frame is reduced; the phenomenon of rail biting of the wheels of the trolley frame is prevented, the service life of the wheels of the trolley frame is prolonged, and the safety operation of a driver is ensured; the load of the bogie frame running obliquely in the sea-side and land-side directions of the front girder 1 and the rear girder 6 is reduced.
In S10, the front girder drawbar system 2 is installed. Specifically, as shown in fig. 9, the front girder system 2 is subjected to three-dimensional measurement. The total station is used for measuring the heights H1 and H2 from the top end of the ladder frame 3 to the front girder 1, the intersection point of the ladder frame center line 31 and the front girder center line is up to the length L1 of the front girder node plate 14, the intersection point of the ladder frame center line 31 and the front girder center line is up to the length L2 of the front girder node plate 15, and the actual lengths C1 of the front girder tie rod 201, the front girder connecting piece 211, the front girder tie rod 202 and the front girder tie rod 203, and the actual lengths C2 of the front girder tie rod 204, the front girder connecting piece 212 and the front girder tie rod 205 are respectively calculated according to the Pythagorean theorem. The front girder pull rod 202, the front girder pull rod 203, the front girder pull rod 204 and the front girder pull rod 205 in the front girder pull rod system 2 are processed in place according to the drawing requirements and are inspected to be qualified. The required length of the distance between the two shaft holes of the front girder connection piece 211 and the front girder connection piece 212 is calculated and marked and processed according to the actual measured lengths C1 and C2 and the lengths of the front girder pull rod 202, the front girder pull rod 203, the front girder pull rod 204 and the front girder pull rod 205 which are processed. Compared with the prior practice that the front girder connecting piece 21 and the front girder pull rod 20 are assembled after all made according to the dimensions on the drawing, the front girder pull rod 20 and the front girder connecting piece 21 are actually measured and processed, so that the levelness of left and right girder tracks is ensured, and the uneven stress of the left and right pull rods caused by girder camber deformation in the steel structure manufacturing process is improved. On the other hand, the front girder tie rods 20 and the front girder connection members 21 are actually measured and processed, so that the structural manufacturing errors are reduced, and the beneficial effects of reducing the installation and assembly errors are further realized.
In S10, the front girder tie rods 20 are further connected to the front girder 1, the ladder frame 3, and the front girder connectors 21, respectively. Specifically, the front girder pull rod 203 and the front girder pull rod 205 are respectively connected with the front girder node plate 14 and the front girder node plate 15 shaft holes of the front girder 1, then the front girder connecting piece 211 is assembled with the front girder pull rod 202 and the front girder pull rod 203 of the front girder 1 to form the assembly 16, the front girder connecting piece 212 is connected with the front girder pull rod 205 to form the assembly 17, and the assembly 16 and the assembly 17 are placed on a guide frame bracket of the front girder 1 to be bound and fixed.
In another embodiment, as shown in fig. 10, a front girder connection piece auxiliary lifting lug 22 is arranged on a front girder connection piece 21 of the front girder pull rod system 2, so that an application point and an auxiliary lifting point are provided when the front girder pull rod 201 and the front girder connection piece 211 and the front girder pull rod 204 and the front girder connection piece 212 are connected and installed for pitching the front girder pull rod system 2 by 80 degrees.
Further, as shown in fig. 11, the shore bridge pitching steel wire rope is worn, a temporary power supply is connected, and the front girder 1 is slowly lifted by an emergency mechanism until a certain included angle is formed between the front girder 1 and the ground horizontal line, the included angle range is 0-80 degrees, and the front girder pull rod 201 and the assembly 16 of the front girder 1 and the front girder pull rod 204 and the assembly 17 are connected. Preferably, the included angle is 80 degrees, because if the included angle is smaller than 80 degrees, the installation difficulty of the front girder pull rod system 2 is increased, and the operation safety of constructors is reduced; if greater than 80 will cause the front girder assemblies 16 and 17 to collide with certain structural members of the front girder. When constructors connect the front girder tie rod 201 and the assembly 16 of the front girder 1 and the front girder tie rod 204 and the assembly 17, they can pull up the front girder connection piece 211 and the front girder connection piece 212 respectively by using the front girder connection piece auxiliary lifting lug 22 on the front girder connection piece 211 and the front girder connection piece 212 through a hoist, for example, a chain block, and connect the front girder tie rod 201, the front girder connection piece 211 and the assembly 16, the front girder tie rod 204, the front girder connection piece 212 and the assembly 17 at the upper and lower layers of the tie rod connection platform 11 respectively. The manual hoisting machine of the hand hoist is more labor-saving compared with the conventional modes of manual pulling and installing by using the steel wire rope 10. According to the two front girder connection pieces 21, namely the front girder connection piece 211 and the front girder connection piece 212, which are arranged in the front girder pull rod system 2, an upper working platform and a lower working platform are arranged, so that the installation operation of constructors is facilitated, and the safety of the installation operation of the constructors is improved. The installation method provided by S10 also greatly improves the operation precision and safety performance of the pitching mechanism of the shore bridge, and simultaneously ensures the service lives of the steel wire ropes of the pitching system and the traction system.
In S11, the upper structure of the shore bridge is checked to be installed to be qualified, and the upper structure of the shore bridge is integrally assembled to the door frame structure of the shore bridge. The inspection qualification refers to detecting the relevant assembly size in the upper structure of the quay bridge according to the requirements of a design drawing until the assembly size meets the requirements, and the quay bridge design also has the design specification. And the standard which is qualified in inspection is also combined with GB50205 'inspection and acceptance Standard for construction quality of steel structural engineering'.
While the invention has been shown and described with reference to certain preferred embodiments thereof, it will be understood by those skilled in the art that the foregoing is a further detailed description of the invention with reference to specific embodiments, and it is not intended to limit the practice of the invention to those descriptions. Various changes in form and detail may be made therein by those skilled in the art, including a few simple inferences or alternatives, without departing from the spirit and scope of the present invention.
Claims (12)
1. A method of installing an upper assembly of a quay crane, comprising the steps of:
providing a jig frame, and placing a rear girder on the jig frame;
providing a sea side upper beam and a land side upper beam, and respectively installing the sea side upper beam and the land side upper beam at corresponding positions on the rear girder;
the levelness of the rear girder is adjusted by taking the central lines of the sea side upper cross beam and the land side upper cross beam as horizontal references;
ensuring that the distance between the central lines of the sea side upper cross beam and the land side upper cross beam meets the design requirement and then welding;
mounting a ladder frame onto the sea side upper cross member of the rear girder;
ensuring that the perpendicularity of the ladder frame relative to the ground, the perpendicularity of the ladder frame relative to the center line of the rear girder and the perpendicularity of the ladder frame meet the design requirements, and then welding;
mounting a rear stay bar, so that the rear stay bar is respectively connected with the ladder frame and the rear girder;
a post-installation girder pull rod system;
connecting a front girder with the rear girder, and adjusting the central line of the front girder and the central line of the rear girder to meet the design requirement;
installing a front girder pull rod system;
and integrally hoisting the upper assembly of the shore bridge to the door frame structure of the shore bridge.
2. A method of installing a quay crane upper assembly according to claim 1, wherein the steps of providing a sea side upper beam and a land side upper beam, and installing the sea side upper beam and the land side upper beam at corresponding positions on the rear girder, respectively, and adjusting the levelness of the rear girder with respect to the center line of the sea side upper beam and the land side upper beam as a horizontal reference, further comprise: and when the central lines of the sea side upper cross beam and the land side upper cross beam are used as horizontal references to adjust the rear girder, the error of levelness of the rear girder is ensured to be +/-3 mm.
3. A method of installing a quay crane upper assembly according to claim 1, wherein after the step of providing the marine side upper beam and the land side upper beam and respectively installing the marine side upper beam and the land side upper beam at the corresponding positions on the rear girder, adjusting the levelness of the rear girder with respect to the center line of the marine side upper beam and the land side upper beam as a horizontal reference comprises: and installing a ladder platform.
4. A method of installing a quay crane upper assembly according to claim 1, wherein said step of installing a ladder onto said sea side upper cross member of said rear girder further comprises: and fixedly connecting the upper pull rod of the front girder pull rod system with the ladder frame respectively, integrally hoisting the front girder to the sea side upper cross beam, and fixing the ladder frame.
5. A method of installing a quay crane upper assembly according to claim 1, wherein after the step of welding after ensuring that the perpendicularity of the ladder frame with respect to the ground, the perpendicularity of the ladder frame with respect to the center line of the rear girder, and the perpendicularity of the ladder frame meet design requirements, the method comprises: and checking the perpendicularity of the trapezoid frame.
6. A method of installing an upper assembly of a quay crane according to claim 1, wherein in the step of installing the rear stay so as to be connected to the ladder frame and the rear girder, respectively, the rear stay is connected to the rear girder before the rear stay is connected to the ladder frame.
7. A method of installing an upper assembly of a quay crane according to claim 1, comprising, prior to said step of installing a rear girder tie system: and (5) installing a machine room.
8. A method of installing an upper assembly of a quay crane according to claim 1, wherein said step of installing a rear girder tie system further comprises: the product platform is installed, a supporting frame is fixed by taking the center line of the land side upper cross beam as a reference, and after the verticality is qualified, the supporting frame is fixedly connected with a supporting frame base; when the rear girder is installed in a large size Liang Chenggan, the upper stay rod of the rear girder pull rod system is installed first, then the lower stay rod of the rear girder pull rod system is installed, and the upper end of the rear girder Liang Chenggan is installed first, then the lower end of the rear girder pull rod is installed.
9. A method of installing an upper assembly of a quay crane according to claim 8, wherein said step of installing a rear girder tie system further comprises: and lifting the rear girder supporting rod in an auxiliary manner by utilizing lifting lugs at the tail part of the rear girder, wherein the increase and decrease of the base backing plate of the support frame is used for ensuring the straightness of the rear girder supporting rod.
10. A method of installing a quay crane upper assembly according to claim 1, wherein the step of connecting the front girder to the rear girder and adjusting the center line of the front girder to meet design requirements with the center line of the rear girder further comprises: providing a jig frame, placing the front girder on the jig frame, movably connecting the front girder with the rear girder, and adjusting the levelness and straightness of the front girder and the rear girder.
11. A method of installing an upper assembly of a quay crane according to claim 1, wherein said step of installing a front girder tie system further comprises: measuring the actual length of the front girder pull rod system, and calculating and customizing a connecting piece; connecting and installing part of the pull rods in the front girder pull rod system with the front girder and the connecting piece; and pitching the front girder to 80 degrees with the ground horizontal line through a pitching mechanism, and connecting and installing the front girder pull rod system.
12. A method of installing an upper assembly of a quay crane according to claim 11, wherein in said step of installing a front girder drawbar system, auxiliary lugs are provided on said connection members.
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