A semicircular arc structure beam and its manufacturing method

Abstract

The present invention provides a method for manufacturing a semicircular arc structure beam, wherein the semicircular arc structure beam comprises an upper wing plate, a semicircular arc partition and a web plate, wherein the plane end of the semicircular arc partition is connected to the upper wing plate, and the web plate is installed on the arched outer surface of the semicircular arc partition plate, comprising: placing the upper wing plate on a horizontal tire frame, arranging a plurality of semicircular arc partition plates at intervals, and assembling the plane end of the semicircular arc partition plate to the upper wing plate; dividing the web plate into a left web plate, a right web plate and an intermediate web plate; hoisting the left web plate and the right web plate to both sides of the upper wing plate respectively, fixing the plane ends of the left web plate and the right web plate to the upper wing plate respectively, applying pressure to the left web plate and the right web plate so that the left web plate and the right web plate are bent and formed along the semicircular arc partition plate and fixed; hoisting the intermediate web plate above the upper wing plate for fixing, and then welding the semicircular arc structure beam as a whole, wherein the length direction of the web plate covers a plurality of semicircular arc partition plates. The method has simple procedures, saves construction costs, and effectively improves the economy of construction.

Description

Technical Field

[0001] The invention relates to the technical field of crane steel structures, and in particular to a semicircular arc structure beam and a manufacturing method thereof. Background Art

[0002] With the continuous development of trade, the transportation volume of inland river terminals has continued to grow in recent years, the water transport market has become increasingly active, and the demand for container cranes has also been increasing. However, inland river terminals generally have the problem of small carrying capacity. For example, in order to adapt to the layout of large container cranes, the terminal needs to invest more money and time, which is often unbearable for inland river terminals. Therefore, it is necessary to optimize and improve the container crane equipment technology. While the crane is large-scale, the wheel pressure is reduced by reducing wind resistance. For this reason, a container crane with a semi-circular arc structure beam came into being.

[0003] This type of shore container crane adopts a single box girder structure, the cross section of the beam is a semicircular arc shape, the upper wing plate is a plane, the trolley track is arranged on both sides of the upper wing plate, and the web is an arc surface. Due to the special structural form, when making the box body, if the web is first rolled in sections, then arranged on the arc tire frame for butt welding, and the reinforcement ribs on the arc web are assembled and welded, and then the partition and the upper wing plate are installed, on the one hand, it needs to be transported after rolling, and then the sections are butt welded and the reinforcement ribs are welded. The welding deformation is easy to cause the large welding stress to be unable to be released, thereby causing the box body to be distorted and difficult to correct. At the same time, since the operators are working on the arc surface, it is difficult and there are certain safety hazards; on the other hand, this molding method requires the construction of a special molding tire frame, which increases the difficulty and cycle of construction; from the cost point of view, the web is rolled, transported and the arc molding tire frame is built separately, which increases a lot of construction costs and is less economical. Summary of the invention

[0004] In view of this, the present invention provides a semi-circular arc structure beam and a manufacturing method thereof, so as to solve the problem of long manufacturing period and poor economy of the semi-circular arc structure beam in the above background.

[0005] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0006] According to the manufacturing method of the semi-circular arc structure beam of the embodiment of the present invention, the semi-circular arc structure beam includes an upper wing plate, a semi-circular arc partition and a web plate, the plane end of the semi-circular arc partition is connected to the upper wing plate, and the web plate is installed on the arched outer surface of the semi-circular arc partition. The manufacturing method includes:

[0007] The upper wing plate is placed on a horizontal tire frame, and a plurality of semi-circular arc partitions are arranged at intervals, and the flat ends of the semi-circular arc partitions are assembled to the upper wing plate;

[0008] Divide the web into three sections along the width direction, namely the left web, the right web and the middle web;

[0009] The left and right webs are hoisted to both sides of the upper wing plate respectively, the flat ends of the left and right webs are fixed to the upper wing plate respectively, and the left and right webs are pressed to be bent along the semicircular diaphragm and fixed;

[0010] After the middle web is hoisted above the upper wing plate and fixed, the assembled semi-circular arc structure beam is welded as a whole, wherein the web is covered with a plurality of semi-circular arc partitions in the length direction.

[0011] In one embodiment of the present invention, the upper wing plate is placed on a horizontal tire frame, and a plurality of semi-circular arc partitions are arranged at intervals, and the plane ends of the semi-circular arc partitions are assembled to the upper wing plate, comprising:

[0012] Splice multiple sections of upper wing plates on a horizontal tire frame, weld the multiple sections of upper wing plates after splicing and calibrate the flatness;

[0013] Assembly lines for semicircular arc partitions are marked on the upper wing plate at intervals along the length direction;

[0014] Weld the upper wing plate reinforcement ribs along the length direction of the upper wing plate above the upper wing plate, and correct the flatness;

[0015] The plane ends of a plurality of semicircular arc partitions are arranged at intervals along an assembly line and assembled, and temporary supports are set up at the plane ends of the semicircular arc partitions to prevent tipping over.

[0016] In one embodiment of the present invention, the web is divided into three sections along the width direction, namely a left web, a right web and a middle web, including:

[0017] The welded web stiffeners are extended in the length directions of the left web, the right web and the middle web respectively.

[0018] In one embodiment of the present invention, the left web plate and the right web plate are hoisted to both sides of the upper wing plate and fixed respectively, including:

[0019] Lift the left and right belly plates to both sides of the upper wing plate and fix them;

[0020] Spot welding is performed on the ends of the left web and the right web where they contact the upper wing plate.

[0021] In one embodiment of the present invention, the left web and the right web are pressed so that the left web and the right web are bent along the semicircular arc partition and fixed, including:

[0022] A plurality of hand chain blocks are arranged at intervals on the upper wing plate, and the hand chain blocks are connected to the left web plate and the right web plate respectively;

[0023] Use a hand chain hoist to apply pressure to the end of the left and right web plates away from the upper wing plate toward the semicircular arc partition plate so that the left and right web plates are bent along the semicircular arc partition plate;

[0024] Spot welding is performed on the contact points between the left and right webs and the semicircular arc partition respectively.

[0025] In one embodiment of the present invention, a plurality of hand chain blocks are arranged at intervals on the upper wing plate, and the hand chain blocks are connected to the left web plate and the right web plate respectively, including:

[0026] A left reinforcing plate and a right reinforcing plate extending in the length direction are respectively welded on the left web plate and the right web plate on the side facing the upper wing plate;

[0027] A plurality of locking plates are symmetrically arranged on the left reinforcing plate and the right reinforcing plate respectively;

[0028] The hand chain hoist is connected to a plurality of locking plates respectively.

[0029] In one embodiment of the present invention, a hand chain hoist is used to apply pressure to the ends of the left web and the right web away from the upper wing plate toward the semicircular arc partition so that the left web and the right web are bent along the semicircular arc partition, including:

[0030] A left slot and a right slot matching the left reinforcing plate and the right reinforcing plate are respectively provided on both sides of the semicircular arc partition.

[0031] In one embodiment of the present invention, after the middle web is hoisted above the upper wing plate and fixed, the assembled semi-circular arc structure beam is integrally welded, including:

[0032] An upper side reinforcing plate protruding downward is welded on the side of the middle web plate facing the upper wing plate;

[0033] An upper side slot matching the upper side reinforcing plate is provided above the semicircular arc partition.

[0034] In one embodiment of the present invention, after the middle web is hoisted above the upper wing plate and fixed, the assembled semi-circular arc structure beam is integrally welded, including:

[0035] After the middle web is hoisted above the upper wing plate and fixed, spot welding is performed on the contact points between the middle web and the left and right webs;

[0036] The assembled semi-circular arc structure beam is welded as a whole.

[0037] In one embodiment of the present invention, the assembled semi-circular arc structure beam is integrally welded, including:

[0038] After turning over the semi-circular arc structure beam, the lower part of the upper wing plate is welded as a whole.

[0039] The present invention also provides a semicircular arc mechanism beam, comprising:

[0040] Upper wing panel;

[0041] A plurality of semi-circular arc partitions are arranged at intervals, and the plane ends of the semi-circular arc partitions are fixedly connected to the upper wing plate;

[0042] The web is installed on the arched outer surface of multiple semicircular arc partitions. The web includes a left web, a right web and a middle web. The left web and the right web are symmetrically arranged and fixedly connected to both sides of the arched outer surface of the semicircular arc partition. The middle web is arranged between the left web and the right web and fixedly connected to multiple semicircular arc partitions.

[0043] The above technical solution of the present invention has at least one of the following beneficial effects:

[0044] 1. According to the method for manufacturing the semi-circular arc structure beam of the embodiment of the present invention, the upper wing plate is laid on a horizontal tire frame as a bottom plate for box forming, which is simple in construction and convenient in operation;

[0045] 2. According to the method for manufacturing the semi-circular arc structure beam of the embodiment of the present invention, a semi-circular arc partition is used as a mold for forming the web, which is easy to operate, saves the cost of rolling the web, and improves the economy;

[0046] 3. According to the method for manufacturing the semicircular arc structure beam of the embodiment of the present invention, the web is divided into three sections, which makes it easy to roll the web through the semicircular arc partition, effectively accelerating the project progress and improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] Figure 1 It is a flow chart of a method for manufacturing a semicircular arc structure beam according to an embodiment of the present invention;

[0048] Figure 2 It is a schematic side view of the structure of a semicircular arc structure beam according to an embodiment of the present invention;

[0049] Figure 3 It is a schematic diagram of the top view of the semicircular arc structure beam according to an embodiment of the present invention;

[0050] Figure 4 This is a schematic diagram of the main structure of a semi-circular arc structure beam according to an embodiment of the present invention;

[0051] Figure 5 Another schematic diagram of the main structure of the semicircular arc structure beam according to an embodiment of the present invention;

[0052] Figure 6 Another side view of the semicircular arc structure girder of the embodiment of the present invention;

[0053] Figure 7 A flowchart of the assembly process of the method for manufacturing the semicircular arc structure beam according to an embodiment of the present invention;

[0054] Figure 8 A flow chart of the welding process of the method for manufacturing the semi-circular arc structure beam according to an embodiment of the present invention;

[0055] Figure numerals: 100, upper wing plate; 101, upper wing plate reinforcement rib; 200, semicircular arc partition; 201, partition reinforcement rib; 202, temporary support; 300, web; 301, web reinforcement rib; 310, left web; 311, left reinforcement plate; 320, right web; 321, right reinforcement plate; 330, middle web; 331, upper reinforcement plate; 400, horizontal tire frame; 500, hand winch. DETAILED DESCRIPTION

[0056] In order to make the purpose, technical solution and advantages of the embodiment of the present invention clearer, the technical solution of the embodiment of the present invention will be clearly and completely described below in conjunction with the drawings of the embodiment of the present invention. Obviously, the described embodiment is a part of the embodiment of the present invention, not all of the embodiments. Based on the described embodiment of the present invention, all other embodiments obtained by ordinary technicians in this field belong to the scope of protection of the present invention.

[0057] Unless otherwise defined, the technical terms or scientific terms used in the present invention shall have the usual meanings understood by persons with ordinary skills in the field to which the present invention belongs. The words "first", "second" and similar words used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. Similarly, words such as "one" or "one" do not indicate quantity restrictions, but indicate the existence of at least one. Words such as "connect" or "connected" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship also changes accordingly.

[0058] At present, the girder of the shore container crane adopts a single box girder structure, the cross section of the beam is a semicircular arc shape, and the upper wing plate is a plane. Due to the special structural form, when making the box, it is necessary to roll the web in sections first. On the one hand, it needs to be transported after rolling, and then the sections are butt welded and reinforced. Welding deformation can easily lead to large welding stress that cannot be released, causing the box to twist and difficult to correct. At the same time, since the operators are working on the curved surface, it is difficult and there are certain safety hazards. On the other hand, this molding method requires the construction of a special molding frame, which increases the difficulty and cycle of construction.

[0059] The semicircular arc structure beam of an embodiment of the present invention is described in detail below with reference to the accompanying drawings.

[0060] like Figure 2-Figure 5 As shown, the semicircular arc mechanism beam includes an upper wing plate 100, a plurality of semicircular arc partitions 200 and a web 300. Among them, the plurality of semicircular arc partitions 200 are arranged at intervals, and the plane ends of the semicircular arc partitions 200 are fixedly connected to the upper wing plate 100, the web 300 is installed on the arched outer surface of the plurality of semicircular arc partitions 200, and the web 300 includes a left web 310, a right web 320 and an intermediate web 330, the left web 310 and the right web 320 are symmetrically arranged and fixedly connected to both sides of the arched outer surface of the semicircular arc partition 200, and the intermediate web 330 is arranged between the left web 310 and the right web 320, and fixedly connected to the plurality of semicircular arc partitions 200. The left web 310 and the right web 320 are respectively formed with a left reinforcing plate 311 and a right reinforcing plate 321 extending in the length direction on the side facing the upper wing plate 100, and the middle web 330 is formed with a downwardly protruding upper reinforcing plate 331 on the side facing the upper wing plate 100, and the semicircular arc partition 200 is formed with grooves matching the left reinforcing plate 311, the right reinforcing plate 321 and the upper reinforcing plate 331. Thus, the web 300 can be clamped on the arched outer surface of the semicircular arc partition 200, laying a foundation for the welding process.

[0061] like Figure 1-Figure 7 As shown, according to the manufacturing method of the semi-circular arc structure beam of an embodiment of the present invention, the semi-circular arc structure beam includes an upper wing plate 100, a semi-circular arc partition 200 and a web 300, the plane end of the semi-circular arc partition 200 is connected to the upper wing plate 100, and the web 300 is installed on the arched outer surface of the semi-circular arc partition 200, and the manufacturing method includes S110-S140.

[0062] S110, placing the upper wing plate on the horizontal tire frame, and arranging a plurality of semi-circular arc partitions at intervals, and assembling the flat ends of the semi-circular arc partitions onto the upper wing plate.

[0063] Specifically, a horizontal tire frame 400 can be built in the workshop as a platform for building a semi-circular arc structure beam. The upper wing plate 100 is initially divided into multiple sections. The multiple sections of the upper wing plate 100 can be placed on the horizontal tire frame 400 for splicing and welding, and the upper wing plate reinforcement ribs 101 are welded in the length direction to ensure the strength of the upper wing plate 100. After the flatness is corrected, the assembly line of the semi-circular arc partition 200 is marked on the upper wing plate 100 along the length direction, and then the plane ends of multiple semi-circular arc partitions 200 are arranged and assembled along the assembly line. In order to reduce the overall weight of the beam, the middle part of the semi-circular arc partition 200 is hollowed out, and the partition reinforcement ribs 201 can be welded on the semi-circular arc partition 200 to improve the strength of the semi-circular arc partition 200, and temporary supports 202 are set up at the plane ends of the semi-circular arc partition 200 to prevent tipping. Thus, by arranging a plurality of semi-circular arc partitions 200 at intervals on the upper wing plate 100, the construction process is simple, the operation is convenient, and the time-consuming and labor-intensive process of building an arc forming frame is eliminated. At the same time, the semi-circular arc partitions 200 can be used as a forming mold, and the web 300 can be rolled up by its own flexibility, which saves time and labor and effectively improves production efficiency.

[0064] S120, the web is divided into three sections along the width direction, namely the left web, the right web and the middle web.

[0065] Specifically, since the entire web 300 has low flexibility and is difficult to roll, the web 300 can be divided into a left web 310, a right web 320 and a middle web 330 in the width direction, and the web stiffeners 301 are extended and welded in the length directions of the left web 310, the right web 320 and the middle web 330. Thus, the left web 310, the right web 320 and the middle web 330 can be connected to the semi-circular diaphragm 200 through the forming effect of the semi-circular diaphragm 200, and at the same time, the welded stiffeners can effectively improve the strength of the web 300 and ensure the structural integrity of the beam.

[0066] S130, hoist the left web and the right web to both sides of the upper wing plate respectively, fix the plane ends of the left web and the right web on the upper wing plate respectively, apply pressure to the left web and the right web so that the left web and the right web are bent along the semicircular partition and fixed.

[0067] Specifically, after the left web 310 and the right web 320 are hoisted to both sides of the upper wing plate 100, spot welding is first performed on the ends of the left web 310 and the right web 320 that contact the upper wing plate 100 to make a preliminary connection, and then the left reinforcing plate 311 and the right reinforcing plate 321 extending along the length direction can be welded on the side of the left web 310 and the right web 320 facing the upper wing plate 100 to improve the structural strength of the left web 310 and the right web 320, and the reinforcing plates 311 and 321 can be welded on both sides of the semicircular arc partition 200. A left slot and a right slot matching the left reinforcing plate 311 and the right reinforcing plate 321 are provided on the left reinforcing plate 311 and the right reinforcing plate 321, and then a plurality of locking plates are symmetrically provided on the left reinforcing plate 311 and the right reinforcing plate 321, and the upper wing plate 100 and the locking plates are respectively connected by a hand chain hoist 500, and the left web plate 310 and the right web plate 320 are pressed toward the semi-circular partition plate 200 by the hand chain hoist 500 so that the left web plate 310 and the right web plate 320 are bent along the semi-circular partition plate 200. At this time, the left reinforcing plate 311 and the right reinforcing plate 321 can be respectively engaged in the left slot and the right slot, and finally the left web plate 310 and the right web plate 320 are spot welded at the contact points with the semi-circular partition plate 200 to be initially fixed. Therefore, through the flexibility of the left web 310 and the right web 320 themselves, the left web 310 and the right web 320 can be fitted onto the semicircular arc partition 200 by applying pressure using the hand winch 500, thereby completing the rolling operation of the left web 310 and the right web 320. The operation is simple and convenient, and construction time is effectively saved.

[0068] S140, after hoisting the middle web plate to the top of the upper wing plate and fixing it, the assembled semi-circular arc structure beam is integrally welded, wherein the web plate is covered with a plurality of semi-circular arc partitions in the length direction.

[0069] Specifically, an upper reinforcing plate 331 protruding downward can be welded on the side of the middle web 330 facing the upper wing plate 100 to strengthen the structural strength of the middle web 330. At the same time, an upper slot matching the upper reinforcing plate 331 is opened above the semi-circular arc partition 200, and then the middle web 330 is lowered onto the upper slot to perform spot welding on the contact between the middle web 330 and the left web 310 and the right web 320. Thus, the overall assembly of the semi-circular arc structure beam is completed. After the overall assembly is completed, the upper part of the semi-circular arc structure beam is firstly welded as a whole, and then the semi-circular arc structure beam is turned over to complete the overall welding of the back of the beam. Thus, the production of the semi-circular arc structure beam is completed.

[0070] According to the method for manufacturing a semi-circular arc structure beam according to an embodiment of the present invention, a semi-circular arc partition 200 is set on a horizontal frame 400, and the web 300 is pressurized by the flexibility of the web 300 so that the web 300 fits on the semi-circular arc partition 200, and finally the entirety is welded to complete the manufacturing of the semi-circular arc structure beam. The construction is simple and the operation is convenient, which effectively saves construction time and improves production efficiency.

[0071] The above is a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A method for manufacturing a semi-circular arc structure beam, characterized in that: The semicircular arc structure beam comprises an upper wing plate, a semicircular arc partition plate and a web plate, wherein the plane end of the semicircular arc partition plate is connected to the upper wing plate, and the web plate is installed on the arched outer surface of the semicircular arc partition plate. The manufacturing method comprises: Placing the upper wing plate on a horizontal tire frame, and arranging a plurality of the semicircular arc partitions at intervals, and assembling the flat ends of the semicircular arc partitions to the upper wing plate; Divide the web into three sections along the width direction, namely a left web, a right web and a middle web; The left web plate and the right web plate are hoisted to both sides of the upper wing plate respectively, the plane ends of the left web plate and the right web plate are fixed to the upper wing plate respectively, and the left web plate and the right web plate are pressed to be bent and formed along the semicircular arc partition and fixed; After the intermediate web is hoisted above the upper wing plate and fixed, the assembled semicircular arc structure beam is integrally welded, wherein the web is covered with a plurality of semicircular arc partitions in the length direction; The left and right webs are hoisted to both sides of the upper wing plate and fixed respectively, including: The left web plate and the right web plate are hoisted to both sides of the upper wing plate respectively and fixed; Spot welding is performed on the ends of the left web and the right web that are in contact with the upper wing plate respectively; Pressing the left web plate and the right web plate so that the left web plate and the right web plate are bent and formed along the semicircular arc partition and fixed, comprising: A plurality of hand chain blocks are arranged at intervals on the upper wing plate, and the hand chain blocks are respectively connected to the left web plate and the right web plate; Use the hand chain hoist to apply pressure to the ends of the left web and the right web away from the upper wing plate toward the semicircular arc partition so that the left web and the right web are bent along the semicircular arc partition; Spot welding is performed on the contact points between the left web plate and the right web plate and the semicircular arc partition plate respectively; A plurality of hand chain blocks are arranged at intervals on the upper wing plate, and the hand chain blocks are respectively connected to the left web plate and the right web plate, including: A left reinforcing plate and a right reinforcing plate extending in the length direction are respectively welded on the left web plate and the right web plate on one side facing the upper wing plate; A plurality of locking plates are symmetrically arranged on the left reinforcing plate and the right reinforcing plate respectively; Connecting the hand chain hoist to the plurality of locking plates respectively; Using a hand chain hoist to apply pressure to the ends of the left web and the right web away from the upper wing plate toward the semicircular arc partition so that the left web and the right web are bent along the semicircular arc partition, including: A left groove and a right groove are respectively provided on both sides of the semicircular arc partition plate to match the left reinforcing plate and the right reinforcing plate; After the intermediate web is hoisted above the upper wing plate and fixed, the assembled semicircular arc structure beam is integrally welded, including: An upper reinforcing plate protruding downward is welded on one side of the middle web plate facing the upper wing plate; An upper slot matching the upper reinforcing plate is provided above the semicircular arc partition plate; After the middle web is hoisted above the upper wing plate and fixed, the assembled semi-circular arc structure beam is integrally welded, including: After the middle web is hoisted above the upper wing plate and fixed, spot welding is performed on the contact points between the middle web and the left web and the right web; Integrally welding the assembled semi-circular arc structure beam; After the semi-circular arc structure beam is turned over, the lower part of the upper wing plate is integrally welded.

2. The method according to claim 1, characterized in that The upper wing plate is placed on a horizontal tire frame, and a plurality of the semi-circular arc partitions are arranged at intervals, and the plane ends of the semi-circular arc partitions are assembled to the upper wing plate, including: Splicing the multiple sections of the upper wing plates on the horizontal tire frame, and welding the multiple sections of the upper wing plates after splicing and correcting the flatness; The assembly lines of the semicircular arc partitions are marked on the upper wing plate at intervals along the length direction; Welding upper wing plate reinforcement ribs above the upper wing plate along the length direction of the upper wing plate, and correcting the flatness; The plane ends of a plurality of the semicircular arc partitions are arranged at intervals along the assembly line and assembled, and temporary supports are set up at the plane ends of the semicircular arc partitions to prevent them from tipping over.

3. The method according to claim 1, characterized in that The web is divided into three sections along the width direction, namely a left web, a right web and a middle web, including: Web stiffeners are respectively extended and welded in the length directions of the left web, the right web and the middle web.

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