A welding fixture for circular plate of crane beam and its manufacturing method

Abstract

The crane beam circular plate welding fixture disclosed in the present application includes: a fixture assembly for installing the beam circular plate; a rotary drive device provided at both ends of the fixture assembly; and a welding robot provided on one side of the fixture assembly for welding the crane beam circular plate; wherein the fixture assembly includes: a support frame, a width adjustment device and a length adjustment device provided on the support frame for adjusting the clamping size of the beam circular plate; a width clamping device, a width tightening device, a length clamping device, and a length tightening device provided on the support frame for tightening or clamping the beam circular plate. The welding fixture disclosed in the present application can control welding deformation while ensuring the welding quality of the circular plate, improving manufacturing efficiency, reducing the labor intensity of operators, and being adaptable to the clamping and welding of beam circular plates of different sizes. The present application also provides a manufacturing method for manufacturing crane beam circular plates using the fixture, which also has the above-mentioned beneficial effects.

Description

Technical Field

[0001] The present application relates to the technical field of crane machinery manufacturing, and more specifically, to a crane beam circular plate welding fixture and a manufacturing method. Background Art

[0002] The circular reinforcement plate of the crane beam is a structural component inside the crane beam. It is generally composed of a frame plate and a ring plate. The frame plate and the ring plate are connected by welding. It is widely used in the beam body of the box structure and is numerous.

[0003] Currently, to improve material utilization, most circular panels are welded together from a frame and a ring, which are composed of four components. The four ring components are combined into a ring, which is surrounded by the four frame components. The joints between the two structural components are then welded, and this is mostly done manually. However, this welding method also has many shortcomings: First, the frame and ring panels are large in size, with poor overall rigidity, making welding deformation difficult to control; second, the frame and ring panels vary in size over a wide range, and the welding fixtures have poor adaptability. Most of them are point-mounted and placed on the ground or a platform for direct welding, or manually flipped, making automated welding difficult; third, the welding process requires multiple manual flips, resulting in low welding efficiency, poor weld appearance, high operator labor intensity, and difficulty in ensuring welding quality.

[0004] Therefore, how to provide a crane beam circular plate welding fixture, and a method for manufacturing crane beam circular plates using the welding fixture, which can control welding deformation while ensuring the welding quality of the circular plates, improve manufacturing efficiency, reduce the labor intensity of operators, and adapt to the clamping and welding of beam circular plates of different sizes, has become a technical problem that needs to be urgently solved by technical personnel in this field. Summary of the Invention

[0005] In order to solve the above technical problems, the present application provides a crane beam circular plate welding fixture and a method for manufacturing a crane beam circular plate using the welding fixture. The welding fixture can control the welding deformation while ensuring the welding quality of the circular plate, improve manufacturing efficiency, reduce the labor intensity of operators, and adapt to the clamping and welding of beam circular plates of different sizes.

[0006] A technical solution provided by this application is as follows:

[0007] The present application provides a crane beam circular plate welding fixture, comprising: a fixture assembly for mounting the crane beam circular plate; a rotary drive device provided at both ends of the fixture assembly and movably connected to the fixture assembly; the rotary drive device is used to support and adjust the spatial position of the fixture assembly;

[0008] and a welding robot provided on one side of the fixture assembly for welding the circular plate of the crane beam;

[0009] The clamp assembly includes: a support frame; a width adjustment device and a length adjustment device provided on the support frame for adjusting the clamping size of the beam body circular plate; and a width clamping device, a width tightening device, a length clamping device and a length tightening device provided on the support frame for tightening or clamping the beam body circular plate.

[0010] Furthermore, in a preferred embodiment of the present invention, the support frame includes: end beams and cross beams connected to the end beams; the end beams and the cross beams are adjustably and movably connected in pairs to form a rectangular frame; the two end beams are arranged parallel to each other to form the short sides of the rectangular frame, and the two cross beams are arranged parallel to each other to form the long sides of the rectangular frame.

[0011] Furthermore, in a preferred embodiment of the present invention, the end beam comprises: an end beam body; a first adjustment plate fixedly arranged on the top of the end beam body, the first adjustment plate being provided with adjustment holes in the width direction and a hoisting device mounting hole at one end; and a connecting plate arranged at the middle position of the bottom of the end beam body for connecting to the rotary drive device;

[0012] The crossbeam includes: a crossbeam body; a second adjustment plate fixedly arranged on the top of the crossbeam body, the second adjustment plate is provided with the adjustment holes along the length direction; flanges are arranged at both ends of the crossbeam body, the flange surfaces are perpendicular to the axis of the crossbeam body, and are provided with interfaces connected to the end beam connectors; and a connecting rib plate is arranged between the flange and the crossbeam body.

[0013] Furthermore, in a preferred embodiment of the present invention, the width adjustment device is provided on the inner side wall of the end beam body, and is used to adjust the clamping position of the beam body circular plate in the width direction of the clamp assembly;

[0014] The width adjustment device includes a sliding assembly, a locking assembly, a connecting rod assembly, a crank arm, and a crank arm seat; wherein the sliding assembly is arranged between the two ends of the end beam body and the flange connection position, and is composed of a guide rail, a slider, and a first limit block;

[0015] The locking assembly is provided between the first adjustment plate and the flange, and is used to lock the position of the beam after it is adjusted into position;

[0016] The crank arm seat is arranged in the middle of the inner wall of the end beam body, and is composed of a shaft and a connecting seat, and a limiting device is provided at the end of the shaft;

[0017] A through hole is provided in the middle of the crank arm, which is arranged on the shaft of the crank arm seat through the through hole and is movably connected to the crank arm seat, and interfaces for connecting with the connecting rod assembly are provided at both ends;

[0018] The connecting rod assembly consists of a connecting rod and a connecting rod seat, one end of which is hingedly connected to the connecting rod seat arranged on the flanges at both ends of the crossbeam, and the other end is hingedly connected to the crank arm.

[0019] Furthermore, in a preferred embodiment of the present invention, the guide rail is fixedly arranged on the inner wall of the end beam, the slider is fixedly arranged between the flange and the guide rail, and the limit block is arranged on the inner side surface of the end beam to limit the extreme position of the crossbeam adjustment.

[0020] Furthermore, in a preferred embodiment of the present invention, the length adjustment device is provided on the second adjustment plate of the rectangular frame, located between the cross beams, and arranged parallel to the end beams;

[0021] The length adjustment device includes a transition plate, a first bottom plate, a first vertical plate and a first rib plate;

[0022] The first bottom plate is arranged between the two beams, and interfaces for connecting with the transition plates are provided on the bottom surfaces of both ends, and the first bottom plate is connected with the second adjustment plate through the transition plates;

[0023] The first vertical plate is arranged at the middle position of the top of the first bottom plate and is integrally connected to the first bottom plate; a plurality of oblong through holes are provided on the first bottom plate on both sides of the first vertical plate;

[0024] The first rib is disposed between adjacent oblong through holes, one end of which is connected to the first bottom plate, and the other end of which is connected to the first vertical plate. The first rib is symmetrically disposed relative to the first vertical plate.

[0025] Furthermore, in a preferred embodiment of the present invention, the width clamping devices are provided on the second adjustment plate, and are arranged parallel to each other in pairs;

[0026] The width clamping device includes a second base plate, a second limiting block and a first clamp;

[0027] The second bottom plate is connected to the adjustment hole on the second adjustment plate, one end of the second bottom plate is connected to the second adjustment plate, and the other end extends out of the crossbeam to support the beam body circular plate;

[0028] The second limiting block is provided on the second bottom plate and is engaged with the beam body circular plate, and is used to limit the position of the beam body circular plate in the width direction of the fixture assembly;

[0029] The first clamp is arranged on the second bottom plate, and one end thereof is in contact with the beam body circular plate, so as to fix the position of the beam body circular plate.

[0030] Furthermore, in a preferred embodiment of the present invention, the width tightening device is provided on the second adjusting plate, and is used to adjust the beam body circular plate in the width direction of the clamp assembly;

[0031] The width tightening device includes a first screw and a first nut seat; the first nut seat is threadedly connected to the adjustment hole on the second adjustment plate; the first screw passes through the first nut seat, and one end abuts against the circular plate of the beam body, which is used to adjust the position by rotating the screw.

[0032] Furthermore, in a preferred embodiment of the present invention, the length clamping device is provided on the length adjusting device, and is used to clamp and support the beam body circular plate in the width direction; the length clamping device comprises: a third bottom plate, a first locking plate, a second locking plate, a second clamp, and a third limit block; the third bottom plate is provided below the first bottom plate, and is provided with a groove; one end of the third bottom plate is clamped with the first bottom plate through the groove, and the other end extends out of the first bottom plate, and is used to support the beam body circular plate;

[0033] The first locking plate and the second locking plate are arranged at the position of the oblong through hole of the first bottom plate, and the first bottom plate and the third bottom plate are connected through the oblong through hole to fix the length clamping device to the first bottom plate; the two are arranged parallel to each other, with the first vertical plate in between;

[0034] The third limit block is provided on the third bottom plate and is clamped with the beam body circular plate, and is used to limit the position of the beam body circular plate in the length direction of the clamp assembly;

[0035] The second clamp is arranged on the first locking plate, and one end of the second clamp abuts against the beam body circular plate to fix the position of the beam body circular plate.

[0036] Furthermore, in a preferred embodiment of the present invention, the length tightening devices are provided on the first bottom plate, and are arranged in pairs parallel to each other, for adjusting the length direction of the beam body circular plate;

[0037] The length tightening device includes: a fourth bottom plate, a third locking plate, a fourth locking plate, a second screw rod, a second nut seat and a moving block;

[0038] The third locking plate and the fourth locking plate are arranged at the position of the oblong through hole of the first bottom plate, and the first bottom plate and the third bottom plate are connected through the oblong through hole to fix the length tightening device to the first bottom plate; the two locking plates are arranged parallel to each other, with the first vertical plate in between;

[0039] The fourth bottom plate is arranged below the first bottom plate and is threadedly connected to the third locking plate and the fourth locking plate through the oblong through hole, so as to fix the position of the fourth bottom plate;

[0040] The second nut seat is arranged below the fourth bottom plate, and the second screw rod is arranged thereon;

[0041] A notch is provided at one end of the fourth base plate, and the notch end of the base plate extends out of the first base plate; the moving block is I-shaped and is arranged in the notch; the lower end of the moving block is provided with an interface movably connected to the end of the second screw, which is used to be driven by the second screw to move horizontally and abut against the circular plate of the beam body.

[0042] Furthermore, in a preferred embodiment of the present invention, the welding robot includes: a track assembly; a movable support arranged on the track assembly, and a robot assembly connected to the movable support; the robot assembly includes an arm structure connected to the movable support, and a welding gun structure arranged at one end of the arm structure.

[0043] Furthermore, in a preferred embodiment of the present invention, the rotation driving device includes: an active rotation driving member and a driven rotation driving member; the active rotation driving member and the driven rotation driving member are arranged at both ends of the clamp assembly.

[0044] This application provides another technical solution as follows:

[0045] The present application provides a method for manufacturing a circular plate of a crane beam, which uses the aforementioned circular plate welding fixture of the crane beam as a tool and includes the following steps:

[0046] S1. Mounting of circular plate: Cut the four components of the frame plate and the ring plate, straighten and level them, and bend the ring plate. Then, assemble the frame plate and ring plate components according to the shape of the beam circular plate, and then mount and shape them.

[0047] S2. Clamping the circular plate: Adjust the length and width of the fixture assembly according to the specifications of the beam circular plate; then place the assembled beam circular plate on the fixture assembly, adjust the width tightening device and the length tightening device, and close the width clamping device and the length clamping device to fix the position of the beam circular plate;

[0048] S3. Welding the frame plate joints: Using a DC or pulse welding mode to weld the welds at the joints of the frame plate components on the front side of the circular plate; then turning the circular plate over by the rotary drive device, and continuing to use a DC or pulse welding mode to weld the welds at the joints of the frame plate components on the back side of the circular plate;

[0049] S4. Welding the ring plate connections: Using a DC or pulse welding mode, weld the outer connecting section welds of each ring plate component on the back of the circular plate; then, flip the circular plate over using the rotary drive device, and continue welding the outer connecting section welds of each ring plate component on the front of the circular plate and the inner connecting section welds of each ring plate component using a DC or pulse welding mode;

[0050] S5. Segmentation of the connecting fillet welds: Segment the connecting fillet welds of the front and rear frame and ring plates of the circular plate: divide the connecting fillet welds of the front circular plate frame and ring plate into segments L1 to L8 in a clockwise direction with equal intervals, and divide the connecting fillet welds of the rear circular plate frame and ring plate into segments L9 to L16 in a clockwise direction with equal intervals. The orientation of the front weld segment L1 corresponds to the rear weld segment L9.

[0051] S6. Segmented welding of the connecting fillet welds: Subsequently, the connecting fillet welds L1, L3, L5, and L7 on the front of the circular plate are welded in sequence using a DC or pulse welding mode;

[0052] The reverse side of the sheet metal is then turned over by a rotary drive device, and the fillet welds L10, L12, L14, and L16 on the reverse side of the sheet metal are welded in sequence using a DC or pulse welding mode. The starting points of the welding of the L10, L12, L14, and L16 sections are all 20 to 200 mm before the end points of the corresponding L1, L3, L5, and L7 sections on the other side.

[0053] S7. Segmented welding of the connecting fillet welds: Flip the plate over again using the rotary drive device, and weld the front connecting fillet welds L2, L4, L6, and L8 in sequence using DC or pulse welding mode; the starting points of L2, L4, L6, and L8 are all 3 to 10 mm before the end points of L1, L3, L5, and L7.

[0054] Then, the reverse side of the circular plate is turned over by a rotary drive device, and the DC or pulse welding mode is used to weld the fillet welds L9, L11, L13 and L15 on the reverse side of the circular plate in sequence. The starting points of L9, L11, L13 and L15 are all 3 to 10 mm before the end points of L16, L10, L12 and L14.

[0055] S8. Welding is completed: After welding is completed, loosen the width clamping device and the length clamping device on the fixture assembly, remove the beam body circular plate from the fixture assembly, and then perform cyclic welding according to the above steps.

[0056] The present invention provides a crane beam circular plate welding fixture and a method for manufacturing the crane beam circular plate using the welding fixture, wherein the crane beam circular plate welding fixture includes: a fixture assembly for installing the crane beam circular plate; a rotating drive device provided at both ends of the fixture assembly and movably connected to the fixture assembly; the rotating drive device is used to support and adjust the spatial position of the fixture assembly; and a welding robot provided on one side of the fixture assembly for welding the crane beam circular plate; wherein the fixture assembly includes: a support frame, a width adjustment device and a length adjustment device provided on the support frame for adjusting the clamping size of the beam circular plate; and a width clamping device, a width tightening device, a length clamping device and a length tightening device provided on the support frame for tightening or clamping the beam circular plate. In the crane beam circular plate welding fixture, a fixture assembly is used to position and clamp the components of the beam circular plate to ensure accurate positioning during welding; at the same time, a rotary drive device is provided at both ends of the fixture assembly, and the rotary drive device is used to support and realize spatial position adjustment of the fixture assembly to ensure that the beam circular plate components are in the optimal welding position. The rotary drive device is provided on the ground of the beam circular plate manufacturing area, and is flipped over during the beam circular plate welding to reduce the labor intensity of the operator; secondly, in order to adapt to the welding of circular plates of different sizes, a width adjustment device and a length adjustment device are provided in the fixture assembly, and the two cooperate with each other to adjust the length and width of the fixture assembly, so that beam circular plates of different sizes can be clamped, so that it can adapt to the welding operation of beam circular plates of different specifications. The technical solution involved in the present invention, compared with the existing technology, can control the welding deformation while ensuring the welding quality of the circular plate, improve manufacturing efficiency, reduce the labor intensity of the operator, and adapt to the clamping and welding of beam circular plates of different sizes. BRIEF DESCRIPTION OF THE DRAWINGS

[0057] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0058] Figure 1 A front view of a welding fixture for a circular plate of a crane beam provided by an embodiment of the present invention;

[0059] Figure 2 A top view of a welding fixture for a circular plate of a crane beam according to an embodiment of the present invention;

[0060] Figure 3 A top view of a crane beam circular plate welding fixture with two welding stations according to an embodiment of the present invention;

[0061] Figure 4 Schematic diagram of the three-dimensional structure of the clamp assembly involved in an embodiment of the present invention;

[0062] Figure 5 Schematic diagram of the three-dimensional structure of the width adjustment device involved in an embodiment of the present invention;

[0063] Figure 6 Schematic diagram of the three-dimensional structure of the length adjustment device involved in an embodiment of the present invention;

[0064] Figure 7 Schematic diagram of the three-dimensional structure of the width clamping device involved in an embodiment of the present invention;

[0065] Figure 8 Schematic diagram of the three-dimensional structure of the width tightening device involved in an embodiment of the present invention;

[0066] Figure 9 Schematic diagram of the three-dimensional structure of the length clamping device involved in an embodiment of the present invention;

[0067] Figure 10 Schematic diagram of the three-dimensional structure of the length tightening device involved in an embodiment of the present invention;

[0068] Figure 11 This is a front view of the components of the beam body circular plate according to an embodiment of the present invention;

[0069] Figure 12 This is a front view of the back side of the circular plate of the beam body involved in the embodiment of the present invention;

[0070] Figure 13 A side view of a beam body circular plate according to an embodiment of the present invention;

[0071] Figure 14 The present invention is a flowchart of the steps of the method for manufacturing the circular plate of the crane beam body involved in the embodiment of the present invention.

[0072] Description of reference numerals:

[0073] Clamp assembly 1; rotary drive device 2; welding robot 3; support frame 4; rectangular frame 5; width adjustment device 6; length adjustment device 7; width clamping device 8; width jacking device 9; length clamping device 10; length jacking device 11; end beam 12; cross beam 13; end beam body 14; first adjustment plate 15; connecting plate 16; cross beam body 17; second adjustment plate 18; connecting rib 19; track assembly 20; movable support 21; sliding assembly 22; locking assembly 23; connecting rod assembly 24; crank arm 25; crank arm seat 26; Lantern 27; guide rail 28; slider 29; first limit block 30; connecting rod 31; connecting rod seat 32; transition plate 33; first base plate 34; first vertical plate 35; first rib plate 36; second base plate 37; second limit block 38; first clamp 39; first screw 40; first nut seat 41; third base plate 42; first locking plate 43; second locking plate 44; third limit block 45; second clamp 46; fourth base plate 47; third locking plate 48; fourth locking plate 49; second screw 50; second nut seat 51; moving block 52. DETAILED DESCRIPTION

[0074] In order to enable those skilled in the art to better understand the technical solutions in this application, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the drawings in the embodiments of this application. Obviously, the described embodiments are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without making any creative efforts shall fall within the scope of protection of this application.

[0075] It should be noted that when an element is referred to as being “fixed on” or “set on” another element, it can be directly on the other element or indirectly set on the other element; when an element is referred to as being “connected to” another element, it can be directly connected to the other element or indirectly connected to the other element.

[0076] It should be understood that the terms "length", "width", "up", "down", "front", "back", "first", "second", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0077] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of the technical features indicated. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of the features. Throughout the description of this application, "plurality" or "several" means two or more, unless otherwise specifically defined.

[0078] It should be noted that the structures, proportions, sizes, etc. depicted in the drawings of this specification are only used to match the contents disclosed in the specification so that people familiar with this technology can understand and read them. They are not used to limit the conditions under which this application can be implemented, and therefore have no substantive technical significance. Any structural modifications, changes in proportional relationships, or adjustments in size should still fall within the scope of the technical contents disclosed in this application without affecting the effects and purposes that can be achieved by this application.

[0079] like Figures 1 to 14 As shown, the crane beam circular plate welding fixture provided in the embodiment of the present application includes: a fixture assembly 1 for installing the crane beam circular plate; a rotating drive device 2 provided at both ends of the fixture assembly 1 and movably connected to the fixture assembly 1; the rotating drive device 2 is used to support and adjust the spatial position of the fixture assembly 1; and a welding robot 3 provided on one side of the fixture assembly 1 for welding the crane beam circular plate; wherein the fixture assembly 1 includes: a support frame 4, a width adjustment device 6 and a length adjustment device 7 provided on the support frame 4 for adjusting the clamping size of the beam circular plate; and a width clamping device 8, a width tightening device 9, a length clamping device 10 and a length tightening device 11 provided on the support frame for tightening or clamping the beam circular plate.

[0080] The present invention provides a crane beam circular plate welding fixture, specifically comprising: a fixture assembly 1 for installing the crane beam circular plate; a rotary drive device 2 provided at both ends of the fixture assembly 1 and movably connected to the fixture assembly 1; the rotary drive device 2 is used to support and adjust the spatial position of the fixture assembly 1; and a welding robot 3 provided on one side of the fixture assembly 1 and used for welding the crane beam circular plate; wherein the fixture assembly 1 comprises: a support frame 4, a width adjustment device 6 and a length adjustment device 7 provided on the support frame 4 for adjusting the clamping size of the beam circular plate; and a width clamping device 8, a width tightening device 9, a length clamping device 10 and a length tightening device 11 provided on the support frame for tightening or clamping the beam circular plate. In the crane beam circular plate welding fixture, the fixture assembly 1 is used to position and clamp the parts of the beam circular plate to ensure precise positioning during welding; at the same time, a rotation drive device 2 is set at both ends of the fixture assembly 1, and the rotation drive device 2 is used to support and realize the spatial position adjustment of the fixture assembly 1 to ensure that the beam circular plate parts are in the best welding position. It is set on the ground of the beam circular plate manufacturing area and flipped over during the beam circular plate welding to reduce the labor intensity of the operator; secondly, in order to adapt to the welding of circular plates of different sizes, a width adjustment device 6 and a length adjustment device 7 are set in the fixture assembly 1, and the two cooperate with each other to adjust the length and width of the fixture assembly 1, so that beam circular plates of different sizes can be clamped, so that it can adapt to the welding operations of beam circular plates of different specifications. Compared with the existing technology, the technical solution involved in the present invention can control the welding deformation while ensuring the welding quality of the circular plate, improving manufacturing efficiency, reducing the labor intensity of operators, and adapting to the clamping and welding of circular plates of beams of different sizes.

[0081] The technical solution of the welding fixture of the present invention is described in detail below with reference to specific embodiments:

[0082] Specifically, in a specific embodiment of the present invention, the support frame 4 includes: an end beam 12 and a cross beam 13 connected to the end beam 12; the end beam 12 and the cross beam 13 are adjustably and movably connected in pairs to form a rectangular frame 5; the two end beams 12 are arranged parallel to each other to form the short side of the rectangular frame 5, and the two cross beams 13 are arranged parallel to each other to form the long side of the rectangular frame 5.

[0083] Specifically, in an embodiment of the present invention, the end beam 12 includes: an end beam body 14; a first adjustment plate 15 fixedly arranged on the top of the end beam body 14, the first adjustment plate 15 having adjustment holes along the width direction and a lifting device mounting hole at one end; and a connecting plate 16 arranged at the middle position of the bottom of the end beam body 14 for connecting to the rotary drive device 2;

[0084] Specifically, in an embodiment of the present invention, the beam 13 includes: a beam body 17; a second adjustment plate 18 fixedly arranged on the top of the beam body 17, and the adjustment hole position is provided on the second adjustment plate 18 along the length direction; flanges 27 are arranged at both ends of the beam body 17, and the flange 27 surface is perpendicular to the axis of the beam body 17, and an interface for connecting with the end beam connector is provided thereon; and a connecting rib 19 is provided between the flange 27 and the beam body 17.

[0085] Among them, as attached Figure 4 As shown, in an embodiment of the present invention, the end beam body 14 and the cross beam body 17 are preferably pipe fittings, whose cross sections are square or rectangular, and the inner side surface of the end beam body 14 is provided with an interface connected to the width adjustment device 6; the first adjustment plate 15 and the second adjustment plate 18 are plate-shaped, and their lengths do not exceed the lengths of the end beam 12 and the cross beam 13 respectively, and the adjustment holes provided thereon are preferably threaded holes.

[0086] Specifically, in an embodiment of the present invention, the width adjustment device 6 is arranged on the inner wall of the end beam body 14, and is used to adjust the clamping position of the beam body circular plate in the width direction of the clamp assembly 1; the width adjustment device 6 includes a sliding assembly 22, a locking assembly 23, a connecting rod assembly 24, a crank arm 25 and a crank arm seat 26.

[0087] In the embodiment of the present invention, as shown in the attached Figure 4 As shown, the sliding assembly 22 consists of four pieces, and every two pieces are arranged between the two ends of the end beam body 14 and the connection position of the flange 27. It is composed of a guide rail 28, a slider 29 and a first limit block 30; the guide rail 28 is fixedly set on the inner wall of the end beam 12, the slider 29 is fixedly set between the flange 27 and the guide rail 28, and the first limit block 30 is set on the inner side surface of the end beam 12 to limit the extreme position of the adjustment of the cross beam 13.

[0088] Specifically, in an embodiment of the present invention, the locking assembly 23 is arranged between the first adjustment plate 15 and the flange 27, and is used to lock the position of the beam 13 after it is adjusted to the right position; the crank arm seat 26 is arranged in the middle position of the inner wall of the end beam body 14, and is composed of a shaft and a connecting seat, and a limiting device is provided at the end of the shaft; a through hole is provided in the middle position of the crank arm 25, and the shaft of the crank arm seat 26 is provided through the through hole, and is movably connected to the crank arm seat 26, and interfaces connected to the connecting rod assembly 24 are provided at both ends; the connecting rod assembly 24 is composed of a connecting rod 31 and a connecting rod seat 32, one end of which is hingedly connected to the connecting rod seat 32 provided on the flanges 27 at both ends of the beam 13, and the other end is hingedly connected to the crank arm 25.

[0089] In the embodiment of the present invention, as shown in the attached Figure 5As shown, the locking assembly 23 consists of two parts, which are respectively arranged on the upper part of the two end beams 14; and the locking assembly 23 is an L-shaped structure, one side of the L-shaped structure is connected to the first adjustment plate 15, and the other side is connected to the flange 27; the crank arm 25 is arranged on the crank arm seat 26, and the two ends are connected to the connecting rod assembly 24, and the connecting rod assembly 24 is connected to the flange 27 arranged on the sliding assembly 22 through the connecting rod seat 32, so that the crossbeam 13 can be adjusted in the width direction under the action of the sliding assembly 22 and the crank arm 25, so as to use the welding of beam body circular plates of different width sizes.

[0090] Specifically, in an embodiment of the present invention, the length adjustment device 7 is arranged on the second adjustment plate 18 of the rectangular frame 5, located between the cross beams 17, and arranged parallel to the end beams 12; the length adjustment device 7 includes a transition plate 33, a first bottom plate 34, a first vertical plate 35 and a first rib plate 36; the first bottom plate 34 is arranged between the two cross beams 13, and the bottom surfaces of both ends are provided with interfaces connected to the transition plates 33, and are connected to the second adjustment plate 18 through the transition plates 33; the first vertical plate 35 is arranged in the middle position of the top of the first bottom plate 34 and is connected to the first bottom plate 34 as a whole; a plurality of oblong through holes are provided on the first bottom plate 34 on both sides of the first vertical plate 35; the first rib plate 36 is arranged between adjacent oblong through holes, one end is connected to the first bottom plate 34, and the other end is connected to the first vertical plate 35, and it is symmetrically arranged relative to the first vertical plate 35.

[0091] In the embodiment of the present invention, as shown in the attached Figure 6 As shown, the length adjustment device 7 is used to adjust the length of the clamp assembly 1, facilitating the placement of the beam plate in the length direction on the clamp assembly 1. For length adjustment, the first base plate 34 spans between the two cross beams 17 and is connected to the second adjustment plate 18 at both ends. By changing the position of the connection with the adjustment holes on the second adjustment plate 18, the length can be adjusted to accommodate beam plates of different lengths.

[0092] Specifically, in an embodiment of the present invention, the width clamping device 8 is arranged on the second adjustment plate 18, and is arranged parallel to each other in pairs; the width clamping device 8 includes a second base plate 37, a second limit block 38 and a first clamp 39; the second base plate 37 is connected to the adjustment hole on the second adjustment plate 18, one end is connected to the second adjustment plate 18, and the other end extends out of the cross beam 13 for supporting the beam body circular plate; the second limit block 38 is arranged on the second base plate 37, and is clamped with the beam body circular plate to limit the position of the beam body circular plate in the width direction of the clamp assembly 1; the first clamp 39 is arranged on the second base plate 37, and one end is in contact with the beam body circular plate to fix the position of the beam body circular plate.

[0093] Among them, in the embodiment of the present invention, as shown in the attached Figure 7 As shown, the width clamping device 8 is a plurality of pieces, which are arranged in parallel in pairs and spaced at the same predetermined distance from each other; the first clamp 39 is preferably an eccentric clamping device, which is manual, hydraulic or pneumatic; regarding the clamping and fixing of the beam body circular plate by the width clamping device 8, the beam body circular plate is first placed using the second bottom plate 37, and the second limit block 38 provided on the second bottom plate 37 abuts the wide side of the circular plate, and is locked in combination with the eccentric clamping device to achieve the position fixation of the beam body circular plate.

[0094] Specifically, in the embodiments of the present invention, as shown in the attached Figure 8 As shown, the width tightening device 9 is arranged on the second adjustment plate 18, and is used to adjust the beam body circular plate in the width direction of the clamp assembly 1; the width tightening device 9 includes a first screw rod 40 and a first nut seat 41; the nut seat is threadedly connected to the adjustment hole position on the second adjustment plate 18; the screw rod passes through the first nut seat 41, and one end abuts against the beam body circular plate, and is used to adjust the position by rotating the first screw rod 40.

[0095] Specifically, in the embodiments of the present invention, as shown in the attached Figure 9 As shown, the length clamping device 10 is arranged on the length adjustment device 7, and is used to clamp and support the beam body circular plate in the width direction; the length clamping device 10 includes: a third base plate 42, a first locking plate 43, a second locking plate 44, a second clamp 46 and a third limit block 45; the third base plate 42 is arranged below the first base plate 34, and is provided with a groove; one end is clamped with the first base plate 34 through the groove, and the other end extends out of the first base plate 34 to support the beam body circular plate; the first locking plate 43 and the second locking plate 44 are arranged At the position of the oblong through hole on the first bottom plate 34, the first bottom plate 34 and the third bottom plate 42 are connected through the oblong through hole, and the length clamping device 7 is fixed on the first bottom plate 34; the two are arranged parallel to each other, with the first vertical plate 35 in between; the third limit block 45 is arranged on the third bottom plate 42, and is clamped with the beam body circular plate to limit the position of the beam body circular plate in the length direction of the clamp assembly 1; the second clamper 46 is arranged on the first locking plate 43, and one end is in contact with the beam body circular plate to fix the position of the beam body circular plate.

[0096] In an embodiment of the present invention, the length clamping device 10 comprises multiple components, mounted on the length adjustment device 7, for clamping and supporting the beam's circular plate in the width direction. The third base plate 42 is a plate member that cooperates with a first locking plate 43 and a second locking plate 44 disposed at the oblong through-hole position above the base plate to secure the device to the length adjustment device 7. The first locking plate 43 is disposed at the oblong hole position on the base plate on one side of the vertical plate of the length adjustment device 7; the second locking plate 44 is disposed at the oblong hole position on the base plate on the other side of the vertical plate of the length adjustment device 7. The second clamp 46 is preferably an eccentric clamping device, either manual, hydraulic, or pneumatic.

[0097] Specifically, in an embodiment of the present invention, the length tightening device 11 is arranged on the first bottom plate 34, and is arranged in pairs parallel to each other, for adjusting the length direction of the beam body circular plate; the length tightening device 11 includes: a fourth bottom plate 47, a third locking plate 48, a fourth locking plate 49, a second screw 50, a second nut seat 51 and a moving block 52; the third locking plate 48 and the fourth locking plate 49 are arranged at the position of the long round through hole on the first bottom plate 34, and the two are arranged parallel to each other, with the first vertical plate 35 in the middle; the fourth bottom plate 47 is arranged on the first bottom Below the plate 34, it is threadedly connected to the third locking plate 48 and the fourth locking plate 49 through an oblong through hole, which is used to fix the position of the fourth base plate 47; the second nut seat 51 is arranged below the fourth base plate 47, and the second screw 50 is arranged on it; one end of the fourth base plate 47 is provided with a notch, and the end of the base plate notch extends out of the first base plate 34; the moving block 52 is I-shaped and is arranged in the notch; the lower end of the moving block 52 is provided with an interface that is movably connected to the end of the second screw 50, which is used to be driven by the second screw 50 to move horizontally and abut against the circular plate of the beam body.

[0098] Among them, in the length tightening device 11, as shown in the attached Figure 10 As shown, the fourth base plate 47 is combined with two locking plates to fix the device to the length adjustment device 7. By rotating the second screw 50, the second screw 50 pushes the moving block 52 to move along the length direction of the slot on the fourth base plate 47. The moving block 52 contacts the beam body circular plate, thereby achieving adjustment of the beam body circular plate in the length direction of the clamp assembly 1.

[0099] Specifically, in an embodiment of the present invention, the welding robot 3 includes: a track assembly 20; a movable support 21 arranged on the track assembly 20, and a robot assembly connected to the movable support 21; the robot assembly includes an arm structure 22 connected to the movable support 21, and a welding gun structure arranged at one end of the arm structure 22.

[0100] Specifically, in an embodiment of the present invention, the rotation driving device 2 includes: an active rotation driving member and a driven rotation driving member; the active rotation driving member and the driven rotation driving member are arranged at both ends of the clamp assembly 1.

[0101] In an embodiment of the present invention, the active rotary drive member and the driven rotary drive member in the rotary drive device 2 are respectively arranged at both ends of the fixture assembly 1, and cooperate with the robot welding system to realize 360-degree rotation of the fixture assembly.

[0102] The present application also provides a crane beam circular plate support method, which uses the above-mentioned crane beam circular plate welding fixture as a tool, and includes the following steps:

[0103] S1. Mounting of circular plate: Cut the four components of the frame plate and the ring plate, straighten and level them, and bend the ring plate. Then, assemble the frame plate and ring plate components according to the shape of the beam circular plate, and then mount and shape them.

[0104] S2. Clamping the circular plate: Adjust the length and width of the fixture assembly 1 according to the specifications of the beam circular plate; then place the assembled beam circular plate on the fixture assembly 1, adjust the width tightening device 9 and the length tightening device 11, and close the width clamping device 8 and the length clamping device 10 to fix the position of the beam circular plate;

[0105] S3, welding of frame plate connections: using a DC or pulse welding mode to weld the welds at the connections of the frame plate components on the front side of the paper-shaped board; then turning the paper-shaped board over by the rotary drive device 2, and continuing to use a DC or pulse welding mode to weld the welds at the connections of the frame plate components on the back side of the paper-shaped board;

[0106] S4. Welding the ring plate connections: Weld the outer connecting sections of the ring plate components on the reverse side of the circular plate using a DC or pulse welding mode. Then, the circular plate is flipped over using the rotary drive device 2, and the outer connecting sections of the ring plate components on the reverse side of the circular plate and the inner connecting sections of the ring plate components are welded using a DC or pulse welding mode.

[0107] S5. Segmentation of the connecting fillet welds: Segment the connecting fillet welds of the front and rear frame and ring plates of the circular plate: divide the connecting fillet welds of the front circular plate frame and ring plate into segments L1 to L8 in a clockwise direction with equal intervals, and divide the connecting fillet welds of the rear circular plate frame and ring plate into segments L9 to L16 in a clockwise direction with equal intervals. The orientation of the front weld segment L1 corresponds to the rear weld segment L9.

[0108] S6. Segmented welding of the connecting fillet welds: Subsequently, the connecting fillet welds L1, L3, L5, and L7 on the front of the circular plate are welded in sequence using a DC or pulse welding mode;

[0109] Then, the reverse side of the circular plate is turned over by the rotary drive device 2, and the DC or pulse welding mode is used to weld the fillet welds L10, L12, L14 and L16 on the reverse side of the circular plate in sequence. The welding starting points of the L10, L12, L14 and L16 sections are all 20 to 200 mm before the end points of the corresponding L1, L3, L5 and L7 sections on the other side.

[0110] S7, welding the connecting fillet welds in sections: Flip the front side of the circular plate again using the rotary drive device 2, and weld the connecting fillet welds L2, L4, L6, and L8 on the front side of the circular plate in sequence using the DC or pulse welding mode; the starting points of sections L2, L4, L6, and L8 are all 3 to 10 mm before the end points of sections L1, L3, L5, and L7;

[0111] Then, the reverse side of the circular plate is turned over by the rotary drive device 2, and the fillet welds L9, L11, L13 and L15 on the reverse side of the circular plate are welded in sequence using the DC or pulse welding mode. The starting points of the L9, L11, L13 and L15 sections are all 3 to 10 mm before the end points of the L16, L10, L12 and L14 sections.

[0112] S8. Welding is completed: After welding is completed, the width clamping device 8 and the length clamping device 10 on the fixture assembly 1 are loosened, the beam body circular plate is removed from the fixture assembly 1, and then the cyclic welding is performed according to the above steps.

[0113] The following further describes the method for manufacturing the circular plate of the crane beam body in conjunction with specific embodiments:

[0114] In this embodiment, two sets of welding fixtures, two sets of rotary drive units 2, and one welding robot 3 are used to weld the circular plate of the crane beam. Each set of fixtures and one set of rotary drive units 23 form a railing welding station, forming a double station. The two railing welding stations are arranged at 180 degrees. The robotic welding system is located between the two railing welding stations, and the welding robots 3 automatically perform alternating welding cycles.

[0115] The welded circular plate of the crane beam is welded together by a frame plate consisting of four parts and a ring plate consisting of four parts. The four ring plate parts are combined into a ring and surrounded by the four frame plate parts. The welded seams are mainly the welds at the joints of the four frame plate parts, the welds at the joints of the four ring plate parts, and the welds between the corners of the frame and ring plates. In this embodiment, the connecting corner welds on the front and back of the circular plate are divided into 16 sections, and other even-numbered sections can also be specifically divided. The front of the circular plate is divided into sections L1 to L8 in a clockwise direction, and the back of the circular plate is divided into sections L9 to L16 in a clockwise direction. Its structure is as shown in the attached figure. Figure 11 To the attached Figure 13 shown.

[0116] Specifically, in this embodiment, the method for manufacturing the circular plate of the crane beam specifically includes:

[0117] S1. Mounting of circular plate: Cut the four components of the frame plate and the ring plate, straighten and level them, and bend the ring plate. Then, assemble the frame plate and ring plate components according to the shape of the beam circular plate, and then mount and shape them.

[0118] The purpose of step S1 is to prepare the raw materials according to the specifications of the beam body circular plate. In this embodiment, the frame plate and the ring plate are directly cut and blanked by a laser cutting machine. Figure 11 Carry out some decoration.

[0119] S2. Clamping the circular plate: Adjust the length and width of the fixture assembly 1 according to the specifications of the beam circular plate; then place the assembled beam circular plate on the fixture assembly 1, adjust the width tightening device 9 and the length tightening device 11, and close the width clamping device 8 and the length clamping device 10 to fix the position of the beam circular plate;

[0120] S3, welding of the frame plate connections: using a DC or pulse welding mode to weld the welds a1 to a4 at the connections of the frame plate components on the front side of the circular plate; then turning the circular plate over by the rotary drive device 2, and continuing to use a DC or pulse welding mode to weld the welds a8 to a5 at the connections of the frame plate components on the back side of the circular plate;

[0121] S4, welding the ring plate connections: Using a DC or pulse welding mode, weld the outer connecting section welds b5 to b8 of each ring plate component on the reverse side of the circular plate; then, flip the circular plate over using the rotary drive device 2, and continue to use a DC or pulse welding mode to weld the outer connecting section welds b4 to b1 of each ring plate component on the front side of the circular plate, as well as the inner connecting section welds b9 to b12 of each ring plate component;

[0122] S5. Segmented welding of the connecting fillet welds: Subsequently, DC or pulse welding mode is used to sequentially weld the connecting fillet welds L1, L3, L5, and L7 on the front side of the circular plate;

[0123] Then, the reverse side of the circular plate is turned over by the rotary drive device 2, and the DC or pulse welding mode is used to weld the fillet welds L10, L12, L14 and L16 on the reverse side of the circular plate in sequence. The welding starting points of the L10, L12, L14 and L16 sections are all 20 to 200 mm before the end points of the corresponding L1, L3, L5 and L7 sections on the other side.

[0124] S6. Segmented welding of the connecting fillet welds: Flip the front side of the circular plate again using the rotary drive device 2, and weld the connecting fillet welds L2, L4, L6, and L8 on the front side of the circular plate in sequence using the DC or pulse welding mode; the starting points of the L2, L4, L6, and L8 segments are all 3 to 10 mm before the end points of the L1, L3, L5, and L7 segments;

[0125] Then, the reverse side of the circular plate is turned over by the rotary drive device 2, and the fillet welds L9, L11, L13 and L15 on the reverse side of the circular plate are welded in sequence using the DC or pulse welding mode. The starting points of the L9, L11, L13 and L15 sections are all 3 to 10 mm before the end points of the L16, L10, L12 and L14 sections.

[0126] A distance of 3 to 10 mm is reserved to prevent the oxide scale formed by the surface coating of the welding wire at the center of the end point at the end of each section of the previous process from affecting the arc starting stability of the current process;

[0127] S7. Welding completed: After welding is completed, loosen the width clamping device 8 and the length clamping device 10 on the fixture assembly 1, remove the beam body circular plate from the fixture assembly 1, and then perform cyclic welding according to the above steps.

[0128] As described above, the technical solutions involved in the embodiments of the present invention have the following beneficial effects: the fixture assembly can be adjusted in width and length to adapt to the clamping and welding of beam circular plates of different sizes, the fixture adjustment is convenient, and the workpiece adaptability is strong; the beam circular plate is placed on the fixture assembly, and corresponding positioning, clamping, and adjustment devices are used to achieve rapid clamping of the beam circular plate. In conjunction with the robot welding system and welding process, the welding deformation of the beam circular plate is small, the quality is stable, the production efficiency is high, the requirements for the operator's own welding level are reduced, and the labor intensity of the operator is greatly reduced; in addition, the crane beam circular plate manufacturing method provided by the present application can adopt double-station welding, the fixture assembly automatically flips over, and the robot automatically alternates and cycles welding. The welding process does not require human intervention, the manufacturing efficiency is high, the quality is stable, the labor intensity of the operator is low, and multiple welding systems can be controlled at the same time or participate in the manufacturing of other components. Compared with the existing technology, it has significant progress.

[0129] The above description of the disclosed embodiments is intended to enable one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not limited to the embodiments shown herein but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A method for manufacturing a circular plate of a crane beam, comprising the following steps: S1: Cut the four parts of the frame and ring plates, straighten and level them, and bend the ring plates. Then, assemble the frame and ring plates according to the shape of the beam's ring plates, and then perform spot assembly and forming. S2: Clamping the circular plate: Adjust the length and width of the fixture assembly according to the specifications of the beam circular plate; then place the assembled beam circular plate on the fixture assembly, adjust the width tightening device and the length tightening device, and close the width clamping device and the length clamping device to fix the position of the beam circular plate; S3 Frame plate connection welding: Use DC or pulse welding mode to weld the welds at the connection of each frame plate component on the front of the paper-shaped board; then use the rotary drive device to turn it over, and continue to use DC or pulse welding mode to weld the welds at the connection of each frame plate component on the back of the paper-shaped board; S4 Ring plate connection welding: Use DC or pulse welding mode to weld the outer connecting section welds of each ring plate component on the back of the circular plate; then use the rotary drive device to turn the circular plate over, and continue to use DC or pulse welding mode to weld the outer connecting section welds of each ring plate component on the front of the circular plate and the inner connecting section welds of each ring plate component; S5 Fillet weld segmentation: Segment the fillet welds connecting the front and back frame and ring plates of the circular plate: divide the fillet welds connecting the front circular plate frame and ring plate into segments L1 to L8 in a clockwise direction, and divide the fillet welds connecting the back circular plate frame and ring plate into segments L9 to L16 in a clockwise direction. The orientation of the front weld segment L1 corresponds to the back weld segment L9. S6 connecting fillet weld segment welding: then DC or pulse welding mode is used to weld the front connecting fillet welds L1, L3, L5 and L7 segments of the circular plate in sequence; The sheet is then turned over by a rotary drive device, and the fillet welds L10, L12, L14, and L16 on the reverse side of the sheet are welded in sequence using DC or pulse welding mode. The starting points of the welds L10, L12, L14, and L16 are all 20 to 200 mm before the end points of the corresponding L1, L3, L5, and L7 sections on the other side. Segmented welding of the S7 connecting fillet weld: Flip the plate over again using the rotary drive device, and weld the L2, L4, L6, and L8 sections of the front connecting fillet weld of the circular plate in sequence using DC or pulse welding mode; the starting points of sections L2, L4, L6, and L8 are all 3-10 mm before the end points of sections L1, L3, L5, and L7; The reverse side of the circular plate is then turned over by a rotary drive device, and the fillet welds L9, L11, L13, and L15 on the reverse side of the circular plate are welded in sequence using DC or pulse welding mode. The starting points of L9, L11, L13, and L15 are all 3 to 10 mm before the end points of L16, L10, L12, and L14. S8 welding is completed: After welding is completed, loosen the width clamping device and the length clamping device on the fixture assembly, remove the beam body circular plate from the fixture assembly, and then perform cyclic welding according to the above steps.

2. The method for manufacturing the circular plate of the crane beam according to claim 1, characterized in that: The manufacturing method of the crane beam circular plate is implemented by a crane beam circular plate welding fixture, and the crane beam circular plate welding fixture includes: A fixture assembly for installing the circular plate of the crane beam; A rotation drive device is provided at both ends of the clamp assembly and is movably connected to the clamp assembly; the rotation drive device is used to support and adjust the spatial position of the clamp assembly; and a welding robot provided on one side of the fixture assembly for welding the circular plate of the crane beam; The fixture assembly comprises: a support frame; A width adjustment device and a length adjustment device are provided on the support frame to adjust the clamping size of the beam body circular plate; A width clamping device, a width jacking device, a length clamping device and a length jacking device are arranged on the support frame.

3. The method for manufacturing the circular plate of the crane beam according to claim 2, characterized in that: The support frame comprises: end beams and cross beams connected to the end beams; The end beams and the cross beams are adjustable and movably connected in pairs to form a rectangular frame; The two end beams are arranged in parallel to each other to form the short sides of the rectangular frame, and the two cross beams are arranged in parallel to each other to form the long sides of the rectangular frame.

4. The method for manufacturing the circular plate of the crane beam according to claim 3, characterized in that: The end beam comprises: an end beam body; a first adjustment plate fixedly arranged on the top of the end beam body, wherein the first adjustment plate is provided with adjustment holes along the width direction and a lifting device installation hole at one end; A connecting plate provided at the middle position of the bottom of the end beam body and used for connecting to the rotary drive device; The crossbeam comprises: a crossbeam body; a second adjustment plate fixedly arranged on the top of the crossbeam body, wherein the adjustment holes are arranged on the second adjustment plate along the length direction; Flanges are provided at both ends of the crossbeam body, the flange surfaces are perpendicular to the axis of the crossbeam body, and interfaces for connecting with the end beam connectors are provided thereon; and connecting ribs are provided between the flanges and the crossbeam body.

5. The method for manufacturing the circular plate of the crane beam according to claim 4, characterized in that: The width adjustment device is provided on the inner side wall of the end beam body and is used to adjust the clamping position of the beam body circular plate in the width direction of the clamp assembly; The width adjustment device includes a sliding assembly, a locking assembly, a connecting rod assembly, a crank arm, and a crank arm seat; wherein the sliding assembly is arranged between the two ends of the end beam body and the flange connection position, and is composed of a guide rail, a slider, and a first limit block; The locking assembly is provided between the first adjustment plate and the flange, and is used to lock the position of the beam after it is adjusted into position; The crank arm seat is arranged in the middle of the inner wall of the end beam body, and is composed of a shaft and a connecting seat, and a limiting device is provided at the end of the shaft; A through hole is provided in the middle of the crank arm, which is arranged on the shaft of the crank arm seat through the through hole and is movably connected to the crank arm seat, and interfaces for connecting with the connecting rod assembly are provided at both ends; The connecting rod assembly consists of a connecting rod and a connecting rod seat, one end of which is hingedly connected to the connecting rod seat arranged on the flanges at both ends of the crossbeam, and the other end is hingedly connected to the crank arm.

6. The method for manufacturing the circular plate of the crane beam according to claim 5, characterized in that: The length adjustment device is arranged on the second adjustment plate of the rectangular frame, located between the cross beams, and arranged parallel to the end beams; The length adjustment device includes a transition plate, a first bottom plate, a first vertical plate and a first rib plate; The first bottom plate is arranged between the two beams, and interfaces for connecting with the transition plates are provided on the bottom surfaces of both ends, and the first bottom plate is connected with the second adjustment plate through the transition plates; The first vertical plate is arranged at the middle position of the top of the first bottom plate and is integrally connected to the first bottom plate; a plurality of oblong through holes are provided on the first bottom plate on both sides of the first vertical plate; The first rib is disposed between adjacent oblong through holes, one end of which is connected to the first bottom plate, and the other end of which is connected to the first vertical plate. The first rib is symmetrically disposed relative to the first vertical plate.

7. The method for manufacturing the circular plate of the crane beam according to claim 6, characterized in that: The width clamping devices are arranged on the second adjustment plate, and are arranged in pairs parallel to each other; The width clamping device includes a second base plate, a second limiting block and a first clamp; The second bottom plate is connected to the adjustment hole on the second adjustment plate, one end of the second bottom plate is connected to the second adjustment plate, and the other end extends out of the crossbeam to support the beam body circular plate; The second limiting block is provided on the second bottom plate and is engaged with the beam body circular plate, and is used to limit the position of the beam body circular plate in the width direction of the fixture assembly; The first clamp is arranged on the second bottom plate, and one end thereof is in contact with the beam body circular plate, so as to fix the position of the beam body circular plate.

8. The method for manufacturing the circular plate of the crane beam according to claim 7, characterized in that: The width tightening device is provided on the second adjusting plate and is used to adjust the beam body circular plate in the width direction of the clamp assembly; The width tightening device includes a first screw and a first nut seat; the nut seat is threadedly connected to the adjustment hole on the second adjustment plate; the screw passes through the first nut seat, and one end abuts against the circular plate of the beam body, which is used to adjust the position by rotating the first screw.

9. The method for manufacturing the circular plate of the crane beam according to claim 8, characterized in that: The length clamping device is provided on the length adjusting device and is used to clamp and support the beam body circular plate in the width direction; The length clamping device includes: a third base plate, a first locking plate, a second locking plate, a second clamp and a third limit block; The third bottom plate is arranged below the first bottom plate and has a groove thereon; one end is engaged with the first bottom plate through the groove, and the other end extends out of the first bottom plate to support the beam body circular plate; The first locking plate and the second locking plate are arranged at the position of the oblong through hole of the first bottom plate, and the first bottom plate and the third bottom plate are connected through the oblong through hole to fix the length clamping device to the first bottom plate; the two are arranged parallel to each other, with the first vertical plate in between; The third limit block is provided on the third bottom plate and is clamped with the beam body circular plate, and is used to limit the position of the beam body circular plate in the length direction of the clamp assembly; The second clamp is arranged on the first locking plate, and one end of the second clamp abuts against the beam body circular plate to fix the position of the beam body circular plate.

10. The method for manufacturing the circular plate of the crane beam according to claim 9, characterized in that: The length tightening devices are arranged on the first bottom plate, and are arranged in pairs parallel to each other, and are used to adjust the length direction of the beam body circular plate; The length tightening device includes: a fourth bottom plate, a third locking plate, a fourth locking plate, a second screw rod, a second nut seat and a moving block; The third locking plate and the fourth locking plate are arranged at the position of the oblong through hole of the first bottom plate, and the first bottom plate and the third bottom plate are connected through the oblong through hole to fix the length tightening device to the first bottom plate; the two locking plates are arranged parallel to each other, with the first vertical plate in between; The fourth bottom plate is arranged below the first bottom plate and is threadedly connected to the third locking plate and the fourth locking plate through the oblong through hole, so as to fix the position of the fourth bottom plate; The second nut seat is arranged below the fourth bottom plate, and the second screw rod is arranged thereon; A notch is provided at one end of the fourth base plate, and the notch end of the base plate extends out of the first base plate; the moving block is I-shaped and is arranged in the notch; the lower end of the moving block is provided with an interface movably connected to the end of the second screw, which is used to be driven by the second screw to move horizontally and abut against the circular plate of the beam body.

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