CN110744269A - Manufacturing and mounting method of tire crane support leg flange - Google Patents
Manufacturing and mounting method of tire crane support leg flange Download PDFInfo
- Publication number
- CN110744269A CN110744269A CN201911166779.3A CN201911166779A CN110744269A CN 110744269 A CN110744269 A CN 110744269A CN 201911166779 A CN201911166779 A CN 201911166779A CN 110744269 A CN110744269 A CN 110744269A
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- flange
- plate
- leg
- box body
- flange plate
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
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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
- B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
- B66C23/62—Constructional features or details
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- Butt Welding And Welding Of Specific Article (AREA)
- Arc Welding In General (AREA)
Abstract
The invention discloses a manufacturing and mounting method of a tire crane support leg flange, and relates to the technical field of tire crane support leg flange processing. The method comprises the steps of flange plate processing, mounting of supporting legs and flanges, flange plate drilling and supporting leg support lug plate boring. The invention has the advantages that: the method comprises the following steps of marking a cross center line on a flange plate, marking the cross center line by using a scriber, drawing a corresponding rib plate assembly line on an assembly surface of the flange plate, facilitating the corresponding installation of a flange and a supporting leg, marking the center lines of four surfaces of a box body after the supporting leg is manufactured, checking lines at two ends of the box body and punching a knock sample, aligning and accurately positioning the center of the flange and the center of the box body according to the center lines and the marks when the flange is positioned, pre-positioning the flange by using a clamp code and a false flange before the flange is welded, and then welding the flange from the middle to the two ends.
Description
Technical Field
The invention relates to the technical field of machining of a tire crane support leg flange, in particular to a method for manufacturing and installing the tire crane support leg flange.
Background
With the increase of container throughput, the improvement of loading and unloading efficiency and economic requirements, and the development of modern science and technology, the tyre crane starts to play an increasingly important role.
Among the prior art, when the flange preparation of tyre crane and the landing leg installation, the flange need carry out prewelding and carry out the location determination first, dismantle again and repair etc. and install according to the position that confirms at last, and the step is more complicated, and dismantles and repair the in-process, can make flange and landing leg all impaired, influence the quality.
Disclosure of Invention
The invention aims to solve the technical problems that a method for manufacturing and installing a flange of a landing leg of a tyre crane is provided, and the method can solve the problems that the installation steps of the flange and the landing leg are complex, the quality of the flange and the landing leg is influenced due to the fact that the flange is installed after prewelding and repairing are carried out, and the like in the prior art.
In order to solve the technical problems, the technical scheme of the invention is as follows: the method comprises the steps of processing a flange plate, installing a supporting leg and the flange, drilling the flange plate and boring a supporting leg support lug plate; the method comprises the following specific steps:
s1, processing of the flange plate: the flange template is used for processing the flange plate, the flange plate of the supporting leg is placed with a margin of 7mm in thickness during numerical control blanking, and the flange plate is sent to a metal workshop after blanking to process the outer contour according to the tolerance requirement; marking a cross center line on the flange plate after the processing is finished, and clearly marking the outer side of the flange by using a scriber, wherein the marking error of the scriber is within 0.2 mm; when the flange plates at the girder end and the saddle girder end of the supporting leg are manufactured, the flatness of the correction flange is within 2 mm; drawing a corresponding rib plate assembly line on the assembly surface of each flange plate, wherein the rib plate assembly lines are symmetrical in pairs, so that rib alignment of the rib plates in final assembly at the later stage is ensured, and flange assembly is facilitated;
s2, mounting of the support legs and the flanges:
s2.1, manufacturing supporting legs: in the manufacturing process of the support leg, 50mm trimming allowance is placed at the end of the saddle beam, and the support leg is assembled according to the process procedure during assembly; the flatness and the verticality of the port of the support leg need to be checked before the support leg flange is welded, and the requirement is less than 1 mm;
s2.2, trimming the leg allowance: drawing central lines of four surfaces of the supporting leg box body, inspection lines at two ends and a knock sample punching hole, and trimming the allowance of the saddle beam end by taking the inspection lines as a reference;
s2.3, mounting of a flange: when the flange is positioned, the center of the flange and the center of the supporting leg box body need to be aligned and accurately positioned; after the flange is positioned, the flange is fixed by using the clamping codes and the false flange, the flange is ensured not to deform during welding, the clamping codes are clamped at two end parts of the false flange, then the flange is welded, and the welding direction of a welding line is from the middle to two ends; after the flange is welded, the flatness of the flange is less than 2mm, otherwise, the flange is corrected in place; after the landing leg flange is installed, all prewelded parts are positioned and welded;
s3, drilling a flange plate and boring a lug plate of a support leg brace:
s3.1, integrally scribing the flange plate before the supporting legs are taken out of a workshop, scribing a thickness allowance line of the flange plate, hoisting the supporting legs to a gantry milling machine, adjusting the central line of a supporting leg box body to be horizontal, adjusting the flange plate to be vertical, and milling the end face of the flange plate according to scribing sample punching holes;
s3.2, processing a support rod lug plate hole on the support leg according to the size;
s3.3, retesting the relevant data of the straightness accuracy of the box body, the flatness of the box body, the torsion resistance of the box body, the flatness of a flange, the verticality of a port and the length of a supporting leg;
and S3.4, positioning the flange template according to the cross center line of the support leg flange plate, and drilling bolt holes according to the flange template.
Furthermore, in step S1, the square of the logarithmic control is checked during machining, and the diagonal error is controlled within 0.5mm after machining.
Further, in the step S2.1, the grooves of the web on the upper opening surface of the supporting leg cannot be cut by hand.
The invention has the advantages that: the method comprises the following steps of marking a cross center line on a flange plate, marking the cross center line by using a scriber, drawing a corresponding rib plate assembly line on an assembly surface of the flange plate, facilitating the corresponding installation of a flange and a supporting leg, marking the center lines of four surfaces of a box body after the supporting leg is manufactured, checking lines at two ends of the box body and punching a knock sample, aligning and accurately positioning the center of the flange and the center of the box body according to the center lines and the marks when the flange is positioned, pre-positioning the flange by using a clamp code and a false flange before the flange is welded, and then welding the flange from the middle to the two ends.
Drawings
FIG. 1 is a schematic view of a lower flange plate of the present invention labeled;
FIG. 2 is a schematic view of the upper flange plate of the present invention marked;
FIG. 3 is a schematic view of the assembly line of the lower flange plate of the present invention labeled;
FIG. 4 is a schematic view of the assembly line of the upper flange plate of the present invention marked schematically;
FIG. 5 is a marked schematic view of a leg inspection line of the present invention;
FIG. 6 is a schematic view of the clamping of the lower flange plate of the present invention before welding;
FIG. 7 is a schematic view of the clamping of the upper flange plate of the present invention before welding;
FIG. 8 is a schematic view of a lower flange plate welding sequence of the present invention;
FIG. 9 is a schematic view of a welding sequence for the upper flange plate of the present invention;
fig. 10 is a schematic view of the structure of the ear plate hole of the leg brace of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in detail with reference to the accompanying drawings and the detailed description. The following examples are presented to enable one of ordinary skill in the art to more fully understand the present invention and are not intended to limit the scope of the embodiments described herein.
As shown in fig. 1 to 10, the following technical solutions are adopted in the present embodiment: the method comprises the steps of processing a flange plate, installing a supporting leg and the flange, drilling the flange plate and boring a supporting leg support lug plate; the method comprises the following specific steps:
s1, processing of the flange plate: as shown in fig. 1-4, fig. 1 and 3 are schematic diagrams of a lower flange of a support leg, fig. 2 and 4 are schematic diagrams of an upper flange of a support leg, a flange template is used for processing a flange plate, a margin of 7mm is placed in the thickness of the flange plate of the support leg during numerical control blanking, and the flange plate of the support leg is sent to a metalworking shop to process an outer contour according to the tolerance requirement after blanking; marking a cross center line on the flange plate after the processing is finished, and clearly marking the outer side of the flange by using a scriber, wherein the marking error of the scriber is within 0.2 mm; when the flange plates at the girder end and the saddle girder end of the supporting leg are manufactured, the flatness of the correction flange is within 2 mm; drawing a corresponding rib plate assembly line on the assembly surface of each flange plate, wherein the rib plate assembly lines are symmetrical in pairs, so that rib alignment of the rib plates in final assembly at the later stage is ensured, and flange assembly is facilitated;
s2, mounting of the support legs and the flanges:
s2.1, as shown in FIG. 5, the structure of the supporting leg is shown schematically, and the supporting leg is manufactured as follows: in the manufacturing process of the support leg, 50mm trimming allowance is placed at the end of the saddle beam, and the support leg is assembled according to the process procedure during assembly; the flatness and the verticality of the port of the support leg need to be checked before the support leg flange is welded, and the requirement is less than 1 mm;
s2.2, trimming the leg allowance: drawing central lines of four surfaces of the supporting leg box body, inspection lines at two ends and a knock sample punching hole, and trimming the allowance of the saddle beam end by taking the inspection lines as a reference;
s2.3, mounting of a flange: when the flange is positioned, the center of the flange and the center of the supporting leg box body need to be aligned and accurately positioned; as shown in fig. 6, the positioning structure of the lower flange is shown in fig. 7, the positioning structure of the upper flange is shown, the flange is fixed by using a clamp and a dummy flange after the flange is positioned, the flange is ensured not to deform during welding of the flange, the clamp is clamped at two end parts of the dummy flange, then the flange is welded, as shown in fig. 8, the welding sequence of the lower flange is shown, as shown in fig. 8, the B-direction structural schematic diagram of fig. 6 is shown in fig. 8, the welding is carried out according to the sequence of 11-12-13-14-15-16, the welding direction of the welding seam is from the middle to two ends, the bottom and the outer side carbon gouging are sequentially carried out during welding, as shown in fig. 9, the welding sequence of the upper flange is shown, as shown in fig. 9, the A-direction structural schematic diagram of fig. 7 is shown in fig. 9, the welding is carried out according to the sequence of 1, Welding an outer carbon plane; after the flange is welded, the flatness of the flange is less than 2mm, otherwise, the flange is corrected in place; after the landing leg flange is installed, all prewelded parts are positioned and welded;
s3, drilling a flange plate and boring a lug plate of a support leg brace:
s3.1, integrally scribing the flange plate before the supporting legs are taken out of a workshop, scribing a thickness allowance line of the flange plate, hoisting the supporting legs to a gantry milling machine, adjusting the central line of a supporting leg box body to be horizontal, adjusting the flange plate to be vertical, and milling the end face of the flange plate according to scribing sample punching holes;
s3.2, as shown in figure 10, processing a support rod lug plate hole on the support leg according to the size;
s3.3, retesting the relevant data of the straightness accuracy of the box body, the flatness of the box body, the torsion resistance of the box body, the flatness of a flange, the verticality of a port and the length of a supporting leg;
and S3.4, positioning the flange template according to the cross center line of the support leg flange plate, and drilling bolt holes according to the flange template.
In step S1, the square of the logarithmic control is checked during machining, and the diagonal error is controlled within 0.5mm after machining.
In the step S2.1, the grooves of the web plates on the upper opening surfaces of the supporting legs cannot be cut manually.
The method comprises the following steps of marking a cross center line on a flange plate, marking the cross center line by using a scriber, drawing a corresponding rib plate assembly line on an assembly surface of the flange plate, facilitating the corresponding installation of a flange and a supporting leg, marking the center lines of four surfaces of a box body, inspection lines at two ends and knocking sample punching holes after the supporting leg is manufactured, aligning and accurately positioning the center of the flange and the center of the box body according to the center lines and the marks when the flange is positioned, pre-positioning the flange by using a clamp code and a false flange before the flange is welded, and then welding the flange from the middle to the two ends.
The foregoing shows and describes the general principles and features of the present invention, together with the advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (3)
1. The manufacturing and mounting method of the tire crane support leg flange is characterized by comprising the following steps: the method comprises the steps of processing a flange plate, installing a supporting leg and the flange, drilling the flange plate and boring a supporting leg support lug plate; the method comprises the following specific steps:
s1, processing of the flange plate: the flange template is used for processing the flange plate, the flange plate of the supporting leg is placed with a margin of 7mm in thickness during numerical control blanking, and the flange plate is sent to a metal workshop after blanking to process the outer contour according to the tolerance requirement; marking a cross center line on the flange plate after the processing is finished, and clearly marking the outer side of the flange by using a scriber, wherein the marking error of the scriber is within 0.2 mm; when the flange plates at the girder end and the saddle girder end of the supporting leg are manufactured, the flatness of the correction flange is within 2 mm; drawing a corresponding rib plate assembly line on the assembly surface of each flange plate, wherein the rib plate assembly lines are symmetrical in pairs, so that rib alignment of the rib plates in final assembly at the later stage is ensured, and flange assembly is facilitated;
s2, mounting of the support legs and the flanges:
s2.1, manufacturing supporting legs: in the manufacturing process of the support leg, 50mm trimming allowance is placed at the end of the saddle beam, and the support leg is assembled according to the process procedure during assembly; the flatness and the verticality of the port of the support leg need to be checked before the support leg flange is welded, and the requirement is less than 1 mm;
s2.2, trimming the leg allowance: drawing central lines of four surfaces of the supporting leg box body, inspection lines at two ends and a knock sample punching hole, and trimming the allowance of the saddle beam end by taking the inspection lines as a reference;
s2.3, mounting of a flange: when the flange is positioned, the center of the flange and the center of the supporting leg box body need to be aligned and accurately positioned; after the flange is positioned, the flange is fixed by using the clamping codes and the false flange, the flange is ensured not to deform during welding, the clamping codes are clamped at two end parts of the false flange, then the flange is welded, and the welding direction of a welding line is from the middle to two ends; after the flange is welded, the flatness of the flange is less than 2mm, otherwise, the flange is corrected in place; after the landing leg flange is installed, all prewelded parts are positioned and welded;
s3, drilling a flange plate and boring a lug plate of a support leg brace:
s3.1, integrally scribing the flange plate before the supporting legs are taken out of a workshop, scribing a thickness allowance line of the flange plate, hoisting the supporting legs to a gantry milling machine, adjusting the central line of a supporting leg box body to be horizontal, adjusting the flange plate to be vertical, and milling the end face of the flange plate according to scribing sample punching holes;
s3.2, processing a support rod lug plate hole on the support leg according to the size;
s3.3, retesting the relevant data of the straightness accuracy of the box body, the flatness of the box body, the torsion resistance of the box body, the flatness of a flange, the verticality of a port and the length of a supporting leg;
and S3.4, positioning the flange template according to the cross center line of the support leg flange plate, and drilling bolt holes according to the flange template.
2. A method of manufacturing and installing a tyre crane leg flange as claimed in claim 1, wherein: in step S1, the square of the logarithmic control is checked during machining, and the diagonal error is controlled within 0.5mm after machining.
3. A method of manufacturing and installing a tyre crane leg flange as claimed in claim 1, wherein: in the step S2.1, the grooves of the web plates on the upper opening surfaces of the supporting legs cannot be cut manually.
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| CN201911166779.3A CN110744269B (en) | 2019-11-25 | 2019-11-25 | Manufacturing and mounting method of tire crane support leg flange |
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| CN201911166779.3A CN110744269B (en) | 2019-11-25 | 2019-11-25 | Manufacturing and mounting method of tire crane support leg flange |
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| CN110744269B CN110744269B (en) | 2021-07-06 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112211106A (en) * | 2020-10-29 | 2021-01-12 | 中铁四局集团第一工程有限公司 | Method for installing prefabricated bent cap of viaduct |
| CN112605547A (en) * | 2020-12-28 | 2021-04-06 | 上海振华重工(集团)股份有限公司南通分公司 | Method for mounting flange plate of lifting support of tire crane saddle beam |
| CN113909823A (en) * | 2021-11-08 | 2022-01-11 | 上海振华重工(集团)股份有限公司 | Method for machining upright column flange of quayside container crane |
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| CN104909276A (en) * | 2015-04-16 | 2015-09-16 | 上海振华重工集团（南通）有限公司 | Tire crane supporting leg shifting method |
| CN105547005A (en) * | 2016-01-14 | 2016-05-04 | 大唐(北京)能源管理有限公司 | Large-size thin-wall connector butt welding structure and method |
| CN108639945A (en) * | 2018-03-30 | 2018-10-12 | 南通振华重型装备制造有限公司 | A kind of Simple tyre hangs assembling process |
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2019
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| JPH11217183A (en) * | 1998-02-04 | 1999-08-10 | Ishikawajima Harima Heavy Ind Co Ltd | Traveling crane |
| CN104590487A (en) * | 2014-12-11 | 2015-05-06 | 中船黄埔文冲船舶有限公司 | Large stern roller flange plate high-precision assembling and welding technology for engineering ship |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112211106A (en) * | 2020-10-29 | 2021-01-12 | 中铁四局集团第一工程有限公司 | Method for installing prefabricated bent cap of viaduct |
| CN112605547A (en) * | 2020-12-28 | 2021-04-06 | 上海振华重工(集团)股份有限公司南通分公司 | Method for mounting flange plate of lifting support of tire crane saddle beam |
| CN112605547B (en) * | 2020-12-28 | 2022-03-22 | 上海振华重工(集团)股份有限公司南通分公司 | Method for mounting flange plate of lifting support of tire crane saddle beam |
| CN113909823A (en) * | 2021-11-08 | 2022-01-11 | 上海振华重工(集团)股份有限公司 | Method for machining upright column flange of quayside container crane |
| CN113909823B (en) * | 2021-11-08 | 2022-11-08 | 上海振华重工(集团)股份有限公司 | Method for machining upright column flange of quayside container crane |
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| CN110744269B (en) | 2021-07-06 |
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Effective date of registration: 20210618 Address after: 226000 No.1 Zhenhua Road, Nantong Economic and Technological Development Zone, Jiangsu Province Applicant after: Nantong Branch of Shanghai Zhenhua heavy industry (Group) Co., Ltd Address before: 226000 No.1 Jiangjing Road, Nantong Development Zone, Jiangsu Province Applicant before: NANTONG ZHENHUA HEAVY EQUIPMENT MANUFACTURING Co.,Ltd. |
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