A crane handrail welding fixture and manufacturing method

Abstract

The application discloses a crane handrail welding clamp, which comprises a clamp assembly for mounting a crane handrail, the clamp assembly comprising a support frame and a positioning assembly arranged on the support frame and used for defining the position of the crane handrail; rotary driving devices arranged at both ends of the support frame and movably connected with the support frame; the rotary driving devices are used for supporting and adjusting the spatial position of the clamp assembly; and a welding robot arranged on one side of the clamp assembly and used for welding the crane handrail. The crane handrail welding clamp disclosed by the application is simple and fast in operation, can guarantee the welding quality of the handrail, improve the production efficiency, and reduce the labor intensity and operation requirements of the operator. The application also provides a manufacturing method, and the crane handrail is manufactured by using the clamp, and the same beneficial effects are achieved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of crane mechanical manufacturing, and more particularly to a crane rail welding clamp and manufacturing method. BACKGROUND

[0002] The crane rail is an indispensable protective component of the crane, as shown in the accompanying drawings, which is generally composed of long cross bars, short cross bars, vertical bars, baffles and sealing plates, and is used for safety protection on the platform or beam body of the crane, so the control of its welding quality is crucial. Figure 13

[0003] At present, the crane rail is generally welded by section steel or pipe, and most of them are pipe fittings with thin wall thickness, generally 2-3mm. For the welding of traditional crane rails, it is basically relied on manual marking and point assembly on the pipe, followed by turning over and welding, or using a simple clamp for marking and positioning before welding. However, such welding methods have the disadvantages of inaccurate positioning of each pipe fitting, poor welding quality, low manufacturing efficiency and high labor intensity of the operator, which need to be further improved.

[0004] Therefore, how to provide a crane rail welding clamp and a method for manufacturing a crane rail by using the welding clamp, which is simple and convenient to operate, can ensure the welding quality of the rail, improve the production efficiency, and reduce the labor intensity and operation requirements of the operator, has become a technical problem to be solved by the technical personnel in the field. SUMMARY

[0005] To solve the above technical problems, the present application provides a crane rail welding clamp and a method for manufacturing a crane rail by using the welding clamp, which is simple and convenient to operate, can ensure the welding quality of the rail, improve the production efficiency, and reduce the labor intensity and operation requirements of the operator.

[0006] One technical solution provided by the present application is as follows:

[0007] The present application provides a crane rail welding clamp, which comprises: a clamp assembly for mounting a crane rail, the clamp assembly comprising a support frame and a positioning assembly provided on the support frame for defining the position of the crane rail; a rotary drive device provided at both ends of the support frame and movably connected with the support frame; the rotary drive device is used for supporting and adjusting the spatial position of the clamp assembly; and a welding robot provided on one side of the clamp assembly and used for welding the crane rail.

[0008] ​Further, in a preferred mode of the present application, the support frame comprises: outer vertical rods connected with the rotary driving device, outer horizontal rods connected with the outer vertical rods; the outer vertical rods and the outer horizontal rods are arranged in pairs in parallel in the horizontal plane to form a rectangular frame;

[0009] A first inner horizontal rod is arranged between the outer horizontal rods and is connected perpendicularly with the outer vertical rods at both ends;

[0010] A first inner vertical rod is arranged between the outer vertical rods and is connected perpendicularly with the outer horizontal rods at both ends; the first inner vertical rods are arranged in parallel and are spaced apart from each other by a predetermined distance;

[0011] A second inner horizontal rod and a third inner horizontal rod are arranged between the first inner vertical rods;

[0012] A fourth inner horizontal rod is connected perpendicularly with the first inner vertical rods at one end and is connected perpendicularly with the outer vertical rods at the other end; and a second inner vertical rod is connected perpendicularly with the fourth inner horizontal rod at one end and is connected perpendicularly with the outer horizontal rods at the other end.

[0013] Further, in a preferred mode of the present application, the positioning assembly comprises: a first component, a second component, a third component, a fourth component, a fifth component and a sixth component;

[0014] The first component is arranged at the end of the outer horizontal rod close to the long horizontal rod of the barrier of the crane and abuts against the end plate of the long horizontal rod to define the left side position of the long horizontal rod of the barrier and the position of the end plate of the barrier at the end of the long horizontal rod;

[0015] The second component is arranged on the outer horizontal rod close to the long horizontal rod of the barrier of the crane and is arranged in parallel with each other; the second component abuts against the arc end of the long horizontal rod of the barrier to define the position of the long horizontal rod of the barrier in the width direction of the support frame;

[0016] The third component is arranged on the first inner vertical rod and the inner horizontal rod to define the positions of the long horizontal rod, the short horizontal rod and the vertical rod of the barrier of the crane;

[0017] The fourth component is arranged on the second inner vertical rod and is connected with the second inner vertical rod at one end and is connected with the outer horizontal rod at the other end to define the position of the vertical rod of the barrier of the crane and the position of the barrier baffle on the support frame in cooperation with the fifth component;

[0018] The fifth component is arranged on the third inner horizontal rod to cooperate with the fourth component to define the position of the barrier baffle of the crane on the support frame;

[0019] The sixth component is arranged on the outer vertical rod close to the long horizontal rod of the barrier of the crane and abuts against the end plate of the other end of the long horizontal rod of the barrier to define the right side position of the long horizontal rod of the barrier.

[0020] Further, in a preferred mode of the present application, the first component comprises: a first bottom plate connected with the outer horizontal plate; a first vertical plate arranged on the first bottom plate and abutting against the crane rail cover plate;

[0021] One side of the first vertical plate is provided with a counterbore at a position opposite to the rail cover plate, the counterbore is connected with the rail cover plate, and the counterbore is used for placing the rail cover plate;

[0022] The other side of the first vertical plate is provided with a first suction mechanism at a position opposite to the counterbore; the first suction mechanism is used for fixing the rail cover plate in the counterbore.

[0023] Further, in a preferred mode of the present application, the second component comprises: a second bottom plate arranged on the outer horizontal rod;

[0024] A second vertical plate is arranged on the second bottom plate and is connected with the second bottom plate perpendicularly; the second vertical plate abuts against the long horizontal rod arc end of the crane rail;

[0025] And a web plate connecting the second bottom plate and the second vertical plate; the second web plate is connected with the plate surface of the second vertical plate perpendicularly.

[0026] Further, in a preferred mode of the present application, the third component comprises: a third bottom plate arranged on the first inner vertical rod or other inner horizontal rod;

[0027] A U-shaped clamp is arranged on the third bottom plate; a mounting support is arranged side by side with the U-shaped clamp; the U-shaped clamp is used for placing the long horizontal rod, the short horizontal rod or the vertical rod;

[0028] A first clamping device is arranged on the mounting support and is used for limiting the position of the pipe placed in the U-shaped clamp.

[0029] Further, in a preferred mode of the present application, the fourth component comprises: a fourth bottom plate, a limiting boss is arranged on the fourth bottom plate; the limiting boss is used for clamping the rail baffle; a second clamping device is arranged on the fourth bottom plate.

[0030] Further, in a preferred mode of the present application, the second clamping device comprises: an adjusting support arranged on the fourth bottom plate; a movable rod connected with the adjusting support; a conical abutting block arranged at one end of the movable rod; the conical abutting block abuts against the vertical rod of the crane rail, and is used for pressing the vertical rod.

[0031] Further, in a preferred mode of the present application, the fifth component comprises: a fifth bottom plate arranged on the third inner cross bar; a third clamping device connected with the fifth bottom plate, the third clamping device comprising the adjusting support, the movable rod, and a cylindrical abutting block arranged at one end of the movable rod; the cylindrical abutting block abuts against the rail baffle, and is used for pressing the rail baffle.

[0032] Further, in a preferred mode of the present application, the sixth component comprises: a sixth bottom plate arranged on the outer vertical bar; and a fourth clamping device arranged on the sixth bottom plate.

[0033] Further, in a preferred mode of the present application, the fourth clamping device comprises the adjusting support, the movable rod, and a positioning seat arranged at one end of the movable rod; the positioning seat is provided with a counterbore; a second suction mechanism is arranged in the counterbore; and the positioning seat abuts against the other end plate of the rail long cross bar, and is used for fixing the end plate in the counterbore.

[0034] Further, in a preferred mode of the present application, the welding robot comprises: a track assembly; a moving support arranged on the track assembly; and a robot assembly connected with the moving support; the robot assembly comprises an arm structure connected with the moving support, and a welding gun structure arranged at one end of the arm structure.

[0035] Further, in a preferred mode of the present application, the rotary driving device comprises: a driving rotary driving member and a driven rotary driving member; the driving rotary driving member and the driven rotary driving member are arranged at two ends of the clamp assembly.

[0036] The present application provides another technical solution as follows:

[0037] The present application provides a crane rail manufacturing method, which uses the crane rail welding clamp as a tool, and comprises the following steps:

[0038] S1, rail baffle fixing: placing the crane rail baffle on the support frame, close to the third inner cross bar and above the fourth component, with one long side of the baffle abutting against the long side of the limiting boss of the fourth component, and the other long side abutting against the cylindrical abutting block of the third clamping device to fix the rail baffle;

[0039] S2, rail long cross bar fixing: placing the rail end plate in the counterbore of the first clamping device and the fourth clamping device; then placing the rail long cross bar in the U-shaped clamp of the third component, and operating the first clamping device and the fourth clamping device to clamp and fix the rail long cross bar;

[0040] S3, railing vertical rod fixing: the railing vertical rod is placed in the U-shaped clamp of the third assembly on the first inner cross rod, the second inner cross rod and the fourth inner cross rod, and the first clamping device is operated to clamp and fix;

[0041] S4, railing short cross rod fixing: the railing short cross rod is placed in the U-shaped clamp of the third assembly on the first inner vertical rod, and the first clamping device is operated to clamp and fix;

[0042] S5, railing front face welding: the positioning assembly is arranged on the support frame, one side of which is the front face of the railing, and after the pipe fixing is completed, the welding robot is used to adopt pulse intermittent speed welding to weld the connection between the front face long cross rod, the short cross rod, the baffle and the vertical rod, and direct current intermittent speed welding is used to weld the connection between the front face baffle and the vertical rod; and the welding robot adopts interval welding, which is performed every interval of one vertical rod on the front face of the railing, and the welding sequence is sequentially welding from the connection between the vertical rod and the long cross rod to the connection between the vertical rod and the baffle or sequentially welding from the connection between the vertical rod and the baffle to the connection between the vertical rod and the long cross rod, and the welding sequence of adjacent vertical rods to be welded is opposite;

[0043] S6, railing back face welding: then the support frame is turned over by the rotary drive device, and the welding robot is used to adopt pulse intermittent speed welding to weld the connection between the back face long cross rod, the short cross rod and the remaining vertical rods which have not been welded; the welding sequence is sequentially welding from the connection between the vertical rod and the long cross rod to the connection between the vertical rod and the baffle or sequentially welding from the connection between the vertical rod and the baffle to the connection between the vertical rod and the long cross rod, and the welding sequence of adjacent vertical rods to be welded is opposite;

[0044] S7, baffle reinforcement welding: then the support frame is turned to the front face of the railing by the rotary drive device, and the welding robot is used to adopt direct current intermittent speed welding to weld the connection between the baffle and the vertical rod which have not been welded on the front face of the railing;

[0045] S8, welding completion: after all the connections are welded, the first clamping device, the second clamping device, the third clamping device and the fourth clamping device are loosened, the railing is taken out of the clamp assembly, and the manufacturing of the crane railing is completed.

[0046] Further, in a preferred mode of the present application, the pulse intermittent speed welding of the welding robot has the following beat: welding for 0.4-1 seconds and stopping for 1-3 seconds; the intermittent speed direct current welding has the following beat: welding for 0.5-1.5 seconds and stopping for 0.8-2 seconds.

[0047] The crane rail welding fixture provided by the application comprises a fixture assembly for mounting a crane rail, the fixture assembly comprises a support frame and a positioning assembly arranged on the support frame for defining the position of the crane rail; a rotary driving device arranged at both ends of the support frame and movably connected with the support frame; the rotary driving device is used for supporting and adjusting the spatial position of the fixture assembly; and a welding robot arranged on one side of the fixture assembly and used for welding the crane rail. BRIEF DESCRIPTION OF DRAWINGS

[0048] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without any creative effort on the basis of these drawings.

[0049] Figure 1 The front view of the crane rail welding fixture provided by the embodiment of the present application;

[0050] Figure 2 The top view of the crane rail welding fixture related to the embodiment of the present application;

[0051] Figure 3 The top view of the crane rail welding fixture with double welding stations related to the embodiment of the present application;

[0052] Figure 4 The three-dimensional structural schematic view of the fixture assembly related to the embodiment of the present application;

[0053] Figure 5 The three-dimensional structural schematic view of the first assembly related to the embodiment of the present application;

[0054] Figure 6A perspective view of a second assembly according to an embodiment of the present application;

[0055] Figure 7 A perspective view of a third assembly according to an embodiment of the present application;

[0056] Figure 8 A perspective view of a fourth assembly according to an embodiment of the present application;

[0057] Figure 9 A perspective view of a second clamping device according to an embodiment of the present application;

[0058] Figure 10 A perspective view of a fourth bottom plate according to an embodiment of the present application;

[0059] Figure 11 A side view (A-A sectional view) of a fifth assembly according to an embodiment of the present application;

[0060] Figure 12 A perspective view of a sixth assembly according to an embodiment of the present application;

[0061] Figure 13 A structural view of a crane guard according to an embodiment of the present application;

[0062] Figure 14 A flow chart of a manufacturing method of a crane guard according to an embodiment of the present application.

[0063] BRIEF DESCRIPTION OF THE DRAWINGS

[0064] support frame 1, positioning assembly 2, rotary driving device 3, welding robot 4, outer cross bar 5, outer vertical bar 6, first inner cross bar 7, first inner vertical bar 8, second inner cross bar 9, third inner cross bar 10, fourth inner cross bar 11, second inner vertical bar 12, first assembly 13, second assembly 14, third assembly 15, fourth assembly 16, fifth assembly 17, sixth assembly 18, driving rotary driving member 19, driven rotary driving member 20, track assembly 21, moving support 22, first bottom plate 23, first vertical plate 24, first suction force mechanism 25, second bottom plate 26, second muscle plate 27, second vertical plate 28, third bottom plate 29, U-shaped clamp 30, mounting support 31, first clamping device 32, fourth bottom plate 33, limiting boss 34, second clamping device 35, adjusting bracket 36, movable rod 37, conical abutting block 38, fifth bottom plate 39, third clamping device 40, cylindrical abutting block 41, sixth bottom plate 42, fourth clamping device 43, positioning seat 44. DETAILED DESCRIPTION

[0065] In order for the person skilled in the art to better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by the person skilled in the art without creative labor fall within the protection scope of the present application.

[0066] It should be noted that when an element is referred to as being "fixed" or "disposed" on another element, it can be directly on the other element or indirectly disposed 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.

[0067] It should be understood that the terms "length", "width", "upper", "lower", "front", "back", "first", "second", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate the orientation or positional relationship shown in the drawings based on the orientation or positional relationship shown in the 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 particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0068] In addition, the terms "first", "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple", "several" is two or more, unless otherwise explicitly and specifically limited.

[0069] It should be understood that the structures, proportions, sizes, etc. shown in the drawings of the present application are only used to cooperate with the content disclosed in the specification, to enable those skilled in the art to understand and read, and do not have technical substantive significance, and any modification of the structure, change of the proportion relationship or adjustment of the size, without affecting the effect and purpose that can be achieved by the present application, should still fall within the scope of the technical content disclosed by the present application.

[0070] As Figures 1 to 14As shown, the crane handrail welding clamp provided by the embodiment of the present application comprises: a clamp assembly for mounting a crane handrail, the clamp assembly comprising a support frame 1 and a positioning assembly 2 arranged on the support frame 1 for defining the position of the crane handrail; a rotary driving device 3 arranged at both ends of the support frame 1 and movably connected with the support frame 1; the rotary driving device 3 being used for supporting and adjusting the spatial position of the clamp assembly; and a welding robot 4 arranged on one side of the clamp assembly and used for welding the crane handrail.

[0071] The present application provides a crane handrail welding clamp, specifically comprising: a clamp assembly for mounting a crane handrail, the clamp assembly comprising a support frame 1 and a positioning assembly 2 arranged on the support frame 1 for defining the position of the crane handrail; a rotary driving device 3 arranged at both ends of the support frame 1 and movably connected with the support frame 1; the rotary driving device 3 being used for supporting and adjusting the spatial position of the clamp assembly; and a welding robot 4 arranged on one side of the clamp assembly and used for welding the crane handrail. In the crane handrail welding clamp, the clamp assembly is composed of the support frame 1 and the positioning assembly 2, the parts of the handrail are mounted on the support frame 1, and the positioning and clamping of the handrail parts are realized through the positioning assembly 2, which is convenient to operate; and the rotary driving device 3 is connected at both ends of the clamp assembly, which supports and realizes the spatial position adjustment of the clamp assembly; and for the welding of the handrail, the welding robot 4 is used, assisted by the position adjustment of the rotary driving device 3, to realize the welding and reinforcement of the connection between the parts of the handrail which have been fixed in position on the support frame 1, thereby improving the production efficiency under the premise of ensuring the welding quality. The technical scheme of the present application, compared with the prior art, is simple and convenient to operate, can ensure the welding quality of the handrail, improve the production efficiency, and reduce the labor intensity and operation requirements of the operator.

[0072] The technical scheme of the welding clamp of the present application is described in detail below in combination with specific embodiments:

[0073] Specifically, in the specific embodiment of the present application, the support frame 1 comprises: an outer vertical rod 6 connected with the rotary driving device 3, an outer horizontal rod 5 connected with the outer vertical rod 6; the outer vertical rod 6 and the outer horizontal rod 5 are arranged in parallel in the horizontal plane, forming a rectangular frame; a first inner horizontal rod 7 arranged between the outer horizontal rods 5 and vertically connected with the outer vertical rods 6 at both ends; a first inner vertical rod 8 arranged between the outer vertical rods 6 and vertically connected with the outer horizontal rods 5 at both ends; the first inner vertical rods 8 are arranged in parallel with each other and are spaced apart by a predetermined distance; a second inner horizontal rod 9 and a third inner horizontal rod 10 arranged between the first inner vertical rods 8; a fourth inner horizontal rod 11 vertically connected with the first inner vertical rods 8 at one end and vertically connected with the outer vertical rods 6 at the other end; and a second inner vertical rod 12 vertically connected with the fourth inner horizontal rod 11 at one end and vertically connected with the outer horizontal rod 5 at the other end.

[0074] In this embodiment, the frame structure of the support frame 1 mainly comprises the outer horizontal rod 5, the first inner horizontal rod 7, the second inner horizontal rod 9, the third inner horizontal rod 10, the fourth inner horizontal rod 11, the outer vertical rod 6, the first inner vertical rod 8, and the second inner vertical rod 12. Holes are formed on each rod, and the positioning assembly 2 is installed on the support frame 1 through the holes; the outer vertical rod 6 is provided with a connecting plate connected with the rotary driving device 3, and the connecting plate is provided with a connecting interface.

[0075] Specifically, in the specific embodiment of the present application, the first inner horizontal rod 7 is arranged in the middle of the support frame 1, dividing the rectangular frame into two rectangles; the second inner horizontal rod 9 is arranged between the first inner vertical rods 8 on both sides of the vertical rods of the railing except the two end vertical rods, and three second inner horizontal rods 9 are arranged between every two first inner vertical rods 8: one is arranged close to the long horizontal rod of the railing, one is arranged close to the baffle of the railing, and the other is arranged directly below the baffle of the railing; the third inner horizontal rod 10 is arranged between the first inner vertical rods 8 between the two vertical rods of the railing, and two third inner horizontal rods 10 are arranged between every two first inner vertical rods 8: one is arranged close to the baffle of the railing, and the other is arranged directly below the baffle of the railing to support the baffle; the fourth inner horizontal rod 11 is arranged between the first inner vertical rods 8 close to the two end vertical rods of the railing and the outer vertical rod 6, and the other is arranged directly below the baffle of the railing to support the baffle; the first inner vertical rod 8 is arranged in pairs between every two vertical rods of the railing and close to the vertical rods of the railing; the second inner vertical rod 12 is arranged inside the outer vertical rod 6 at both ends, between the fourth inner horizontal rod 11 and the outer horizontal rod 5 close to the baffle of the railing, and is vertically connected with the fourth inner horizontal rod 11 and the outer horizontal rod 5.

[0076] Specifically, in the specific embodiment of the present application, the positioning assembly 2 comprises: a first assembly 13, a second assembly 14, a third assembly 15, a fourth assembly 16, a fifth assembly 17, and a sixth assembly 18.

[0077] The first assembly 13 is arranged on the outer horizontal rod 5 near one side of the long horizontal rod of the crane barrier, abuts against the end plate of the long horizontal rod, and is used for limiting the left position of the long horizontal rod of the barrier and the position of the barrier end plate at the end of the long horizontal rod.

[0078] In the embodiment of the application, the first assembly 13 is used for limiting the left position of the long horizontal rod of the barrier and the position of the barrier end plate at the end of the long horizontal rod. The first assembly 13 comprises a first bottom plate 23 connected with the outer horizontal plate, a first vertical plate 24 arranged on the first bottom plate 23 and abutting against the crane barrier end plate, a counterbore arranged on one side of the first vertical plate 24 and corresponding to the position of the barrier end plate, the counterbore being used for placing the barrier end plate, a first suction mechanism 25 arranged on the other side of the first vertical plate 24 and corresponding to the position of the counterbore, and the suction mechanism being used for fixing the barrier end plate in the counterbore.

[0079] In the first assembly 13, the first bottom plate 23 is arranged on the outer horizontal rod 5 near the long horizontal rod of the barrier, can be moved and adjusted on the outer horizontal rod 5 through the hole, and the counterbore arranged on the first vertical plate 24 corresponding to the position of the barrier end plate has a depth smaller than the thickness of the end plate. The barrier end plate is fixed in the counterbore of the first vertical plate through the suction member of the first suction mechanism 25, and the suction member is preferably a magnet.

[0080] The second assembly 14 is arranged on the outer horizontal rod 5 near one side of the long horizontal rod of the barrier, is arranged in parallel with each other, abuts against the arc end of the long horizontal rod of the barrier, and is used for limiting the position of the long horizontal rod of the barrier in the width direction of the support frame 1.

[0081] Specifically, in the embodiment of the application, the second assembly 14 comprises a second bottom plate 26 arranged on the outer horizontal rod 5, a second vertical plate 28 arranged on the second bottom plate 26 and connected with the second bottom plate 26 perpendicularly, the second vertical plate 28 abutting against the arc end of the long horizontal rod of the crane barrier, and a web plate connecting the second bottom plate 26 and the second vertical plate 28, the second web plate 27 being connected with the second vertical plate 28 perpendicularly.

[0082] In the embodiment of the application, the second assembly 14 is multiple pieces, is arranged on the outer horizontal rod 5 near one side of the long horizontal rod of the barrier, and is preferably arranged at a position corresponding to the vertical rod of the barrier. The second bottom plate 26 is arranged on the outer horizontal rod 5 near one side of the long horizontal rod of the barrier, can be moved and adjusted on the outer horizontal rod 5, the second vertical plate 28 is arranged on the second bottom plate 26 perpendicularly, the plate surface of the second vertical plate 28 abutting against the long horizontal rod of the barrier, the second web plate 27 is arranged between the second bottom plate 26 and the second vertical plate 28 at a perpendicular angle, and is used for supporting the second vertical plate 28 and strengthening the overall stability of the second assembly 14.

[0083] Specifically, in the specific embodiments of the present application, the third assembly 15 is arranged on the first inner vertical rod 8 and the inner horizontal rod, and is used to define the positions of the long horizontal rods, the short horizontal rods and the vertical rods in the crane barrier.

[0084] The third assembly 15 comprises a third bottom plate 29 arranged on the first inner vertical rod 8 or other inner horizontal rods, a U-shaped clamp 30 arranged on the third bottom plate 29, a mounting support 31 arranged side by side with the U-shaped clamp 30, the U-shaped clamp 30 being used to place the long horizontal rods, the short horizontal rods or the vertical rods, and a first clamping device 32 arranged on the mounting support 31 and used to define the positions of the pipes placed in the U-shaped clamp 30.

[0085] In the embodiments of the present application, the third assembly 15 is arranged above the first inner horizontal rod 7, the second inner horizontal rod 9, the third inner horizontal rod 10, the fourth inner horizontal rod 11 and the first inner vertical rod 8 through the third bottom plate 29 thereunder, the first clamping device 32 thereof is preferably an eccentric clamp, and is of a manual type or a liquid-gas type, and the U-shaped clamp 30 has an opening matched with the outer dimensions of each pipe of the barrier, and an inclined opening is arranged on the inner side of the opening to facilitate the placement of each pipe of the barrier in the U-shaped clamp 30.

[0086] Specifically, in the specific embodiments of the present application, the fourth assembly 16 is arranged on the second inner vertical rod 12, is connected to one end of the second inner vertical rod 12 and is connected to the other end of the outer horizontal rod 5, and is used to define the positions of the vertical rods of the barrier and the barrier baffle in the support frame 1 in cooperation with the fifth assembly 17; the fourth assembly 16 comprises a fourth bottom plate 33, a limiting boss 34 arranged on the fourth bottom plate 33, and a second clamping device 35 arranged on the fourth bottom plate 33.

[0087] Specifically, in the specific embodiments of the present application, the second clamping device 35 comprises an adjusting support 36 arranged on the fourth bottom plate 33, a movable rod 37 connected to the adjusting support 36, a conical abutting block 38 arranged on one end of the movable rod 37, and the conical abutting block 38 abutting against the vertical rod of the crane barrier and being used to press the vertical rod.

[0088] The fourth bottom plate 33 has an L-shaped structure, is arranged in a left-right symmetrical manner, the limiting boss 34 is arranged on the long side of the L-shaped structure, a plurality of mounting holes are arranged on the long side of the L-shaped structure and are used to adjust the position of the bottom plate, and the short side of the L-shaped structure is provided with an interface for mounting the second clamping device 35.

[0089] The second clamping device 35 is arranged on the fourth bottom plate 33 of the L-shaped structure, and cooperates with the second assembly 14 to limit the position of the vertical rod of the railing on the support frame 1; wherein the tapered abutting block is an arrow-shaped block with a large end and a small end, the large end is connected to the end of the movable rod 37 of the second clamping device, and the small end is inserted into the vertical rod of the railing and abuts against the vertical rod through the tapered inclined surface; the second clamping device 35 controls the extension and retraction of the movable rod 37 through the adjusting support 36, so that the tapered abutting block arranged at the end of the movable rod 37 abuts against the vertical rod of the railing, and the position of the vertical rod is fixed.

[0090] Specifically, in the embodiment of the present application, the fifth assembly 17 is arranged on the third inner horizontal rod 10, and is used for cooperating with the fourth assembly 16 to limit the position of the baffle in the crane railing on the support frame 1; wherein the fifth assembly 17 comprises: a fifth bottom plate 39 arranged on the third inner horizontal rod 10; a third clamping device 40 connected to the fifth bottom plate 39, the third clamping device 40 comprising the adjusting support 36, the movable rod 37, and a cylindrical abutting block 41 arranged at one end of the movable rod 37; the cylindrical abutting block 41 abuts against the railing baffle, and is used for pressing the railing baffle.

[0091] Specifically, in the embodiment of the present application, the third clamping device 40 comprises: the adjusting support 36, the movable rod 37, and a cylindrical abutting block 41 arranged at one end of the movable rod 37; the cylindrical abutting block 41 abuts against the railing baffle, and is used for pressing the railing baffle.

[0092] In the embodiment of the present application, the cylindrical abutting block of the third clamping device 40 is in a plate-shaped or cylindrical structure; the third abutting block abuts against one side of the railing baffle, and the limiting boss 34 on the fourth bottom plate 33 abuts against the other side of the railing baffle, so that the positions of the railing baffle are limited by the cooperation of the two.

[0093] Specifically, in the embodiment of the present application, the sixth assembly 18 is arranged on the outer vertical rod 6 on one side of the long horizontal rod of the railing, and abuts against the sealing plate at the other end of the long horizontal rod of the railing, and is used for limiting the position of the right side of the long horizontal rod of the railing; wherein the sixth assembly 18 comprises: a sixth bottom plate 42 arranged on the outer vertical rod 6; and a fourth clamping device 43 arranged on the sixth bottom plate 42.

[0094] Specifically, in the embodiment of the present application, the fourth clamping device 43 comprises the adjusting support 36, the movable rod 37, and a positioning seat 44 arranged at one end of the movable rod 37; the positioning seat 44 is provided with a counterbore; a second suction mechanism is arranged in the counterbore; and the positioning seat 44 abuts against the sealing plate at the other end of the long horizontal rod of the railing, and is used for fixing the sealing plate in the counterbore.

[0095] The fourth clamping device 43 is mainly composed of a clamp, a movable rod 37, a positioning seat 44 and a suction element; the adjusting support 36 and the movable rod 37 form the clamp, and the clamp is preferably an eccentric clamp; the clamp is connected to the long horizontal rod of the railing through a counterbore provided on the positioning seat 44, and the long horizontal rod of the railing is fixed at the other end of the counterbore, so as to limit the position of the long horizontal rod of the railing.

[0096] Specifically, in the embodiment of the present application, the welding robot 4 comprises a track assembly 21, a moving support 22 arranged on the track assembly 21, a robot assembly connected to the moving support 22, the robot assembly comprising a moving support connected to the moving support 22 and a welding gun structure arranged at one end of the moving support.

[0097] Specifically, in the embodiment of the present application, the rotary driving device 3 comprises a driving rotary driving element 19 and a driven rotary driving element 20; the driving rotary driving element 19 and the driven rotary driving element 20 are arranged at two ends of the clamp assembly.

[0098] In the embodiment of the present application, the driving rotary driving element 19 and the driven rotary driving element 20 of the rotary driving device 3 are arranged at two ends of the clamp assembly respectively, and cooperate with the robot welding system to realize 360-degree rotary work of the clamp assembly.

[0099] The application also provides a crane handrail support method, which uses the crane handrail welding clamp as a tool, and comprises the following steps: S1, handrail baffle fixing: placing the crane handrail baffle on the support frame 1, close to the third inner cross bar 10 and above the fourth assembly 16, fixing the baffle by making one long side of the baffle close to the long side of the limiting boss 34 of the fourth assembly 16 and making the other long side of the baffle operate the third clamping device 40 to make the cylindrical abutting block 41 abut against it; S2, handrail long cross bar fixing: placing the handrail baffle on the first assembly 13 and the counterbore of the fourth clamping device 43; then placing the handrail long cross bar on the U-shaped clamp 30 of the third assembly 15 and operating the first clamping device 32 and the fourth clamping device 43 to clamp and fix the handrail long cross bar; S3, handrail vertical bar fixing: placing the handrail vertical bar on the first inner cross bar 7, the second inner cross bar 9 and the fourth inner cross bar 11 and the U-shaped clamp 30 of the third assembly 15 and operating the first clamping device 32 to clamp and fix it; S4, handrail short cross bar fixing: placing the handrail short cross bar on the first inner vertical bar 8 and the U-shaped clamp 30 of the third assembly 15 and operating the first clamping device 32 to clamp and fix it; S5, handrail front surface welding: the one side of the positioning assembly 2 arranged on the support frame 1 is the front surface of the handrail, after the pipe fixing is completed, the welding robot 4 is used to adopt the pulse intermittent speed welding mode to weld the connection between the front surface long cross bar, the short cross bar, the baffle and the vertical bar of the handrail, and the direct current intermittent speed welding mode is adopted to weld the connection between the front surface baffle and the vertical bar of the handrail; and the welding robot 4 adopts the interval welding, which is performed every interval of one vertical bar on the front surface of the handrail, the welding sequence is sequentially welding from the connection between the vertical bar and the long cross bar to the connection between the vertical bar and the baffle or sequentially welding from the connection between the vertical bar and the baffle to the connection between the vertical bar and the long cross bar, and the welding sequence of adjacent vertical bars needing to be welded is opposite; S6, handrail back surface welding: then the support frame 1 is turned over by the rotary driving device 3, the welding robot 4 is used to adopt the pulse intermittent speed welding mode to weld the connection between the back surface long cross bar, the short cross bar and the remaining vertical bar not needing to be welded of the handrail, and the direct current intermittent speed welding mode is adopted to weld the connection between the back surface baffle and the remaining vertical bar not needing to be welded of the handrail; the welding sequence is sequentially welding from the connection between the vertical bar and the long cross bar to the connection between the vertical bar and the baffle or sequentially welding from the connection between the vertical bar and the baffle to the connection between the vertical bar and the long cross bar, and the welding sequence of adjacent vertical bars needing to be welded is opposite; S7, baffle reinforcing welding: then the support frame 1 is turned to the front surface of the handrail by the rotary driving device 3, the welding robot 4 is used to adopt the direct current intermittent speed welding mode to weld the connection between the baffle and the vertical bar of the front surface of the handrail not needing to be welded; S8, welding completion: after all the connections are welded, the first clamping device 32, the second clamping device 35, the third clamping device 40 and the fourth clamping device 43 are loosened, the handrail is taken out of the clamp assembly, and the manufacturing of the crane handrail is completed.

[0100] The crane rail manufacturing method is further described below in combination with specific embodiments:

[0101] In this embodiment, two sets of welding fixtures, two groups of rotary driving devices 3 and one set of welding robots 4 are used for welding the crane rail. Each set of fixture assembly and one group of rotary driving devices 3 form a rail welding station, forming a double station, and the two rail welding stations are arranged at 180°. The robot welding system is arranged between the two rail welding stations, and the welding robot 4 automatically alternately circulates welding.

[0102] The crane rail welded in this embodiment includes one long crossbar, two short crossbars, six vertical bars and one baffle; for the purpose of method description, it is numbered as follows: long crossbar a1, short crossbar a2, vertical bar a4, which includes vertical bars b1-b6 and baffle a4, as shown in the accompanying drawings. Figure 13

[0103] Specifically, in this embodiment, the crane rail manufacturing method specifically includes:

[0104] S1, rail baffle fixing: placing the crane rail baffle on the support frame 1 against the third inner crossbar 10 and above the fourth assembly 16, with one long side of the baffle abutting against the long side of the fourth assembly 16 limiting boss 34, and the other long side operating the third clamping device 40 to make the cylindrical abutting block abut against it, to fix the rail baffle.

[0105] The rail includes one baffle, and the purpose of step S1 is to fix the rail baffle on the support frame 1; one side of the rail baffle is limited by the limiting boss 34, and the other side is abutted by the third clamping device 40, to achieve the position fixing of the rail baffle.

[0106] S2, long crossbar fixing: placing the rail baffle in the counterbore of the first assembly 13 and the fourth clamping device 43; then placing the long crossbar in the U-shaped clamp 30 of the third assembly 15, and operating the first clamping device 32 and the fourth clamping device 43 to clamp and fix the long crossbar.

[0107] For the fixing of the long crossbar, it includes end fixing and length direction fixing; in step S2, the first assembly 13 and the fourth clamping device 43 are provided with counterbores, which abut against the end plates of the long crossbar, to achieve the end fixing of the long crossbar; secondly, the U-shaped clamp 30 in the third assembly 15 and the first clamping device 32 are combined to fix the long crossbar in the horizontal direction.

[0108] S3, vertical bar fixing: placing the vertical bar in the U-shaped clamp 30 of the third assembly 15 on the first inner crossbar 7, the second inner crossbar 9 and the fourth inner crossbar 11, and operating the first clamping device 32 to clamp and fix it.​

[0109] S4, railing short cross rod fixing: the railing short cross rod is placed in the U-shaped clamp 30 of the third assembly 15 on the first inner vertical rod 8, and the first clamping device 32 is operated to clamp and fix.

[0110] The steps S3 and S4 are the fixing of the railing vertical rod and the short cross rod: for the vertical rod fixing, the bottom end of the vertical rod is butted against the second clamping device 35, the rod body is arranged in the U-shaped clamp 30, and the fixing is combined with the first clamping device 32; and for the short cross rod fixing, the rod member fixing is directly completed by the U-shaped clamp 30 and the first clamping device 32 arranged on the first inner vertical rod 8.

[0111] In the embodiment of the welding crane railing of the present application, the steps S1 to S4 are the positioning and position fixing of the railing rod member, so that subsequent welding treatment is performed on the railing rod member by the welding robot 4.

[0112] S5, the positioning assembly 2 side, that is, the long cross rod, the short cross rod, the baffle and the b1 vertical rod connecting part and the sealing plate and the long cross rod connecting part on the front face of the railing on the welding fixture assembly: the long cross rod, the short cross rod and the vertical rod connecting weld and the sealing plate and the long cross rod connecting weld adopt the pulse intermittent speed welding mode, the baffle and the vertical rod connecting weld adopts the direct current intermittent speed welding mode; the welding direction of the welding robot 4 is sequentially welded from the vertical rod and the long cross rod connecting part to the vertical rod and the baffle connecting part;

[0113] S6, welding the long cross rod, the short cross rod, the baffle and the b3 vertical rod connecting part on the front face of the railing: the long cross rod, the short cross rod and the vertical rod connecting weld adopt the pulse intermittent speed welding mode, the baffle and the vertical rod connecting weld adopts the direct current intermittent speed welding mode; the welding direction of the welding robot 4 is sequentially welded from the vertical rod and the baffle connecting part to the vertical rod and the long cross rod connecting part;

[0114] S7, the positioning assembly 2 side, that is, the long cross rod, the short cross rod, the baffle and the b5 vertical rod connecting part and the sealing plate and the long cross rod connecting part on the front face of the railing on the welding fixture assembly: the long cross rod, the short cross rod and the vertical rod connecting weld and the sealing plate and the long cross rod connecting weld adopt the pulse intermittent speed welding mode, the baffle and the vertical rod connecting weld adopts the direct current intermittent speed welding mode; the welding direction of the welding robot 4 is sequentially welded from the vertical rod and the long cross rod connecting part to the vertical rod and the baffle connecting part;

[0115] S8, then the support frame 1 is turned over by using the rotary driving device 3, the long cross rod, the short cross rod and the b6 vertical rod connecting weld and the sealing plate and the long cross rod connecting weld on the back face of the railing are welded by using the pulse intermittent speed welding mode; the welding direction of the welding robot 4 is sequentially welded from the vertical rod and the baffle connecting part to the vertical rod and the long cross rod connecting part;

[0116] S9, then the pulse welding mode is used to weld the welds at the connection between the long horizontal bars, the short horizontal bars and the b4 vertical bars on the reverse side of the railing and the welds at the connection between the long horizontal bars and the baffle plates, and the welding direction of the welding robot 4 is sequentially from the connection between the vertical bars and the long horizontal bars to the connection between the vertical bars and the baffle plates;

[0117] S10, then the support frame 1 is turned over by using the rotating driving device 3, the pulse welding mode is used to weld the welds at the connection between the long horizontal bars, the short horizontal bars and the b2 vertical bars on the reverse side of the railing and the welds at the connection between the long horizontal bars and the baffle plates, and the welding direction of the welding robot 4 is sequentially from the connection between the vertical bars and the baffle plates to the connection between the vertical bars and the long horizontal bars;

[0118] S11, then the support frame 1 is turned to the front side of the railing by using the rotating driving device 3, and the DC pulse welding mode is used to sequentially weld the welds at the connection between the baffle plates and the b2 vertical bars, the welds at the connection between the baffle plates and the b4 vertical bars and the welds at the connection between the baffle plates and the b6 vertical bars;

[0119] S12, then the first clamping device 32, the second clamping device 35, the third clamping device 40 and the fourth clamping device 43 are loosened, the railing with the welded parts is taken out from the jig assembly, then the steps S1 to S4 are performed to mount the parts of another railing on the furniture assembly of another welding station, then the welding robot 4 performs the steps S5 to S12 to weld the railing in the other jig assembly, and the above steps are repeated.

[0120] In the embodiment of the present application, the steps S5 to S12 are the welding operation of the crane railing, the welding process is automatically and alternately cycled by the robot without 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 simultaneously controlled or other parts can be manufactured.

[0121] Specifically, in the embodiment of the present application, in the steps S5 to S11, the railing welding method further comprises the movement of the welding robot 4 on the track assembly 21 and the rotation of each arm, and the automatic cleaning of the welding gun.

[0122] Specifically, in the embodiment of the present application, the pulse welding of the welding robot 4 has the following beats: welding for 0.4-1 seconds and stopping for 1-3 seconds, and the DC pulse welding has the following beats: welding for 0.5-1.5 seconds and stopping for 0.8-2 seconds.

[0123] From the above, the crane handrail welding fixture involved in the embodiments of the present application has the following technical effects: the parts of the handrail do not need to be point-mounted in advance by using welding, but are clamped and positioned by using the fixture, so that the production efficiency is high, the quality is stable, the consistency is good, and the labor intensity of the operator is low; the parts of the handrail are directly arranged on the support frame through the positioning assembly, and do not need to be point-mounted by using a separate point-mounting fixture and then moved to the welding fixture, so that the process is reduced, the production efficiency is improved, and the labor intensity of the operator is reduced; the parts of the handrail are directly placed at the position of the positioning assembly and the position corresponding to the cross bar, and then the clamping device is operated to complete the positioning and clamping of the parts of the handrail, so that the operation process is simple and fast, and the requirement for the operator is reduced. In addition, the present application also provides a manufacturing method, and the crane handrail is manufactured by using the welding fixture, and also has the above technical effects.

[0124] The above description of disclosed embodiments enables one skilled in the art to make or use the application. Numerous modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be applied to other embodiments without departing from the spirit or scope of the application. Therefore, the present application will not be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A crane rail welding fixture, characterized by, The crane rail welding fixture is used for manufacturing crane rail, comprising: The fixture assembly for installing crane rail; The fixture assembly comprises a support frame and a positioning assembly arranged on the support frame for defining the position of the crane rail; The rotary drive device is arranged at both ends of the support frame and is movably connected with the support frame; The rotary drive device is used for supporting and adjusting the spatial position of the fixture assembly; The welding robot is arranged on one side of the fixture assembly and is used for welding the crane rail; the support frame comprises: The outer vertical rods connected with the rotary drive device; The outer horizontal rods connected with the outer vertical rods; The outer vertical rods and the outer horizontal rods are arranged in pairs in parallel in the horizontal plane to form a rectangular frame; The first inner horizontal rods are arranged between the outer horizontal rods and are connected with the outer vertical rods in a perpendicular manner; The first inner vertical rods are arranged between the outer vertical rods and are connected with the outer horizontal rods in a perpendicular manner; The first inner vertical rods are arranged in parallel and are spaced apart from each other by a predetermined distance; The second inner horizontal rods and the third inner horizontal rods are arranged between the first inner vertical rods; The fourth inner horizontal rods are connected with the first inner vertical rods at one end and are connected with the outer vertical rods at the other end; The second inner vertical rods are connected with the fourth inner horizontal rods at one end and are connected with the outer horizontal rods at the other end; the positioning assembly comprises a first assembly, a second assembly, a third assembly, a fourth assembly, a fifth assembly and a sixth assembly; The first assembly is arranged at the end of the outer horizontal rod close to one side of the long horizontal rod of the crane rail and is abutted with the end plate of the long horizontal rod, so as to define the left side position of the long horizontal rod of the crane rail and the position of the end plate of the crane rail at the end of the long horizontal rod; The second assembly is arranged on the outer horizontal rod close to one side of the long horizontal rod of the crane rail and is arranged in parallel; the second assembly is abutted with the arc end of the long horizontal rod of the crane rail, so as to define the position of the long horizontal rod of the crane rail in the width direction of the support frame; The third assembly is arranged on the first inner vertical rod and other inner horizontal rods, so as to define the positions of the middle long horizontal rod, the short horizontal rod and the vertical rod of the crane rail; The fourth assembly is arranged on the second inner vertical rod and is connected with the second inner vertical rod at one end and is connected with the outer horizontal rod at the other end, so as to define the position of the vertical rod of the crane rail and the position of the baffle of the crane rail in cooperation with the fifth assembly on the support frame; The fifth assembly is arranged on the third inner horizontal rod and is used for defining the position of the baffle of the crane rail on the support frame in cooperation with the fourth assembly; The sixth assembly is arranged on the outer vertical rod close to one side of the long horizontal rod of the crane rail and is abutted with the end plate of the other end of the long horizontal rod of the crane rail, so as to define the right side position of the long horizontal rod of the crane rail; The third assembly comprises: The third bottom plate arranged on the first inner vertical rod or other inner horizontal rods; The U-shaped clamp arranged on the third bottom plate; The mounting support arranged beside the U-shaped clamp; The U-shaped clamp is used for placing the long horizontal rod, the short horizontal rod or the vertical rod; The first clamping device arranged on the mounting support is used for defining the position of the pipe placed in the U-shaped clamp; the fourth assembly comprises: The fourth bottom plate, wherein a limiting boss is arranged on the fourth bottom plate; The limiting boss is used for clamping the baffle of the crane rail; A second clamping device arranged on the fourth bottom plate; The second clamping device comprises an adjusting support arranged on the fourth bottom plate, a movable rod connected with the adjusting support, and a conical abutting block arranged at one end of the movable rod; The conical abutting block abuts against a vertical rod of the crane barrier, and is used for pressing the vertical rod; The fifth assembly comprises: A fifth bottom plate arranged on the third inner horizontal rod; A third clamping device connected with the fifth bottom plate, the third clamping device comprising the adjusting support, the movable rod, and a cylindrical abutting block arranged at one end of the movable rod; The cylindrical abutting block abuts against a barrier baffle, and is used for pressing the barrier baffle; The sixth assembly comprises: A sixth bottom plate arranged on the outer vertical rod; A fourth clamping device arranged on the sixth bottom plate, the fourth clamping device comprising the adjusting support, the movable rod, and a positioning seat arranged at one end of the movable rod; The positioning seat is provided with a counterbore, and the counterbore is provided with a second suction mechanism; The positioning seat abuts against the other end plate of the long horizontal rod of the barrier, and is used for fixing the end plate in the counterbore; The method for manufacturing the crane barrier welded clamp comprises the following steps: S1, barrier baffle fixing: placing the crane barrier baffle on the support frame, close to the third inner horizontal rod and above the fourth assembly, and fixing the barrier baffle by abutting one long edge of the barrier baffle against the long edge of the limiting convex block of the fourth assembly and abutting the other long edge against the cylindrical abutting block of the third clamping device; S2, long horizontal rod of barrier fixing: placing the barrier end plate in the counterbore of the first assembly and the fourth clamping device, and then placing the long horizontal rod of the barrier in the U-shaped clamp of the third assembly, and fixing the long horizontal rod of the barrier by operating the first clamping device and the fourth clamping device; S3, vertical rod of barrier fixing: placing the vertical rod of the barrier in the U-shaped clamp of the third assembly on the first inner horizontal rod, the second inner horizontal rod and the fourth inner horizontal rod, and fixing the vertical rod of the barrier by operating the first clamping device; S4, short horizontal rod of barrier fixing: placing the short horizontal rod of the barrier in the U-shaped clamp of the third assembly on the first inner vertical rod, and fixing the short horizontal rod of the barrier by operating the first clamping device; S5, front surface welding of barrier: the positioning assembly arranged on the support frame has one side as the front surface of the barrier, and after the pipe fixing is completed, the front surface long horizontal rod, the front surface short horizontal rod, the baffle and the vertical rod are welded by adopting the pulse intermittent speed welding mode of the welding robot, the front surface baffle and the vertical rod are welded by adopting the direct current intermittent speed welding mode, the welding robot adopts interval welding, and the welding sequence is from the connection between the vertical rod and the long horizontal rod to the connection between the vertical rod and the baffle in sequence or from the connection between the vertical rod and the baffle to the connection between the vertical rod and the long horizontal rod in sequence, and the welding sequences of adjacent vertical rods to be welded are opposite. S6, the reverse side of the railing is welded: then the support frame is turned over by the rotary drive device, the connecting parts of the long horizontal rod, the short horizontal rod and the remaining vertical rods which have not been welded are welded by the welding robot using pulse intermittent speed welding method; the welding sequence is from the connecting part of the vertical rod and the long horizontal rod to the connecting part of the vertical rod and the baffle, or from the connecting part of the vertical rod and the baffle to the connecting part of the vertical rod and the long horizontal rod, the welding sequence of the adjacent vertical rods to be welded is opposite; S7, the baffle reinforcing welding: then the support frame is turned to the front side of the railing by the rotary drive device, the connecting part of the baffle and the vertical rod which has not been welded on the front side of the railing is welded by the welding robot using direct current intermittent speed welding method; S8, welding is completed: after all the connecting parts are welded, the first clamping device, the second clamping device, the third clamping device and the fourth clamping device are loosened, the railing is taken out from the fixture assembly, and the manufacturing of the crane railing is completed.

2. The crane rail welding fixture of claim 1, wherein, The first assembly comprises a first bottom plate connected with the outer horizontal plate; A first vertical plate is arranged on the first bottom plate and abuts against the end plate of the crane railing; A counterbore is arranged on one side of the first vertical plate opposite the position of the railing end plate, the counterbore is used for clamping and placing the railing end plate; A first suction mechanism is arranged on the other side of the first vertical plate opposite the counterbore; the first suction mechanism is used to fix the railing end plate in the counterbore.

3. The crane rail welding fixture of claim 1, wherein, The second assembly comprises: A second bottom plate arranged on the outer horizontal rod; A second vertical plate arranged on the second bottom plate and connected perpendicularly with the second bottom plate; The second vertical plate abuts against the long horizontal rod arc end of the crane railing; A second rib plate connecting the second bottom plate and the second vertical plate; the second rib plate is connected perpendicularly with the plate surface of the second vertical plate.

4. A method of manufacturing a crane guard, using the crane guard welding jig according to any one of claims 1 to 3 as a tool, characterized by, The method comprises the following steps: S1, railing baffle fixing: the crane railing baffle is placed on the support frame near the third inner horizontal rod and above the fourth assembly, one long edge of the baffle is flatly attached to the long edge of the limiting boss of the fourth assembly, and the other long edge is operated by the third clamping device to make the cylindrical abutting block abut against it, so as to fix the railing baffle; S2, long horizontal rod of the railing is fixed: the railing end plate is placed in the counterbore of the first assembly and the fourth clamping device; then the long horizontal rod of the railing is placed in the U-shaped clamp of the third assembly, and the first clamping device and the fourth clamping device are operated to clamp and fix the long horizontal rod of the railing; S3, the vertical rod of the railing is fixed: the vertical rod of the railing is placed in the U-shaped clamp of the third assembly on the first inner horizontal rod, the second inner horizontal rod and the fourth inner horizontal rod, and the first clamping device is operated to clamp and fix it; S4, the short horizontal rod of the railing is fixed: the short horizontal rod of the railing is placed in the U-shaped clamp of the third assembly on the first inner vertical rod, and the first clamping device is operated to clamp and fix it; S5, the rail front welding: the support frame is provided with a positioning assembly, and one side is a rail front face; after the pipe is fixed, the rail front long rail, short rail, baffle and vertical rail connection are welded by a welding robot using pulse intermittent speed welding, and the rail front baffle and vertical rail connection are welded by a welding robot using direct current intermittent speed welding; and the welding robot uses interval welding, and is performed every interval of the vertical rail on the rail front face, and the welding sequence is sequentially welded from the vertical rail and the long rail connection to the vertical rail and the baffle connection or sequentially welded from the vertical rail and the baffle connection to the vertical rail and the long rail connection, and the welding sequence of the adjacent vertical rails to be welded is opposite; S6, the rail back welding: then the support frame is turned over by a rotating drive device, and the welding robot is used to weld the rail back long rail, short rail and the remaining vertical rail connection which is not welded by pulse intermittent speed welding; The welding sequence is sequentially welded from the vertical rail and the long rail connection to the vertical rail and the baffle connection or sequentially welded from the vertical rail and the baffle connection to the vertical rail and the long rail connection, and the welding sequence of the adjacent vertical rails to be welded is opposite; S7, the baffle reinforcing welding: then the support frame is turned to the rail front face by a rotating drive device, and the welding robot is used to weld the connection between the baffle and the vertical rail on the rail front face which is not welded by direct current intermittent speed welding; S8, the welding is completed: after all the connections are welded, the first clamping device, the second clamping device, the third clamping device and the fourth clamping device are loosened, the rail is taken out of the clamp assembly, and the manufacturing of the crane rail is completed.

5. Crane barrier manufacturing method according to claim 4, characterized in that, The pulse intermittent speed welding of the welding robot has the following beats: welding for 0.4-1 seconds, and staying for 1-3 seconds; the intermittent speed direct current welding has the following beats: welding for 0.5-1.5 seconds, and staying for 0.8-2 seconds.

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