An excavator assembly welding robot

Abstract

The present application relates to excavator cab door frame welding technical field, specifically to a kind of excavator assembly welding robot, including support table, outer frame fixedly connected in the upper portion of support table and welding mechanical arm installed in the side of support table, the middle part of support upper end surface is provided with self-clamping component one for automatically centering adjustment and clamping limit of excavator door frame vertical beam, the rear portion of support is provided with self-clamping component two for automatically centering adjustment and clamping of excavator door frame crossbeam, linkage component for sequentially triggering displacement component, self-clamping component two and self-clamping component one operation to splice vertical support column, crossbeam, vertical beam and L-shaped support column segment in excavator door frame together is jointly provided between support and push component, the present application realizes the quick and accurate splicing and undisturbed flip welding of excavator door frame component by linkage clamping and overall overturning structure, significantly improves splicing size consistency and welding precision, while improving welding efficiency and process continuity.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of excavator cab door frame welding, in particular to an excavator assembly welding robot. BACKGROUND

[0002] The excavator cab is a key human-machine interaction structure in the whole machine, which not only provides an operating environment for the operator, but also plays a protective role. In order to meet the safety, comfort and durability during operation, the cab is usually composed of high-strength steel components. The door frame, as an important part of the cab, is not only used for installing door, window, lock and other components, but also directly participates in the overall structure bearing and lateral protection function of the cab, and its structural stability has a direct impact on the safety of the whole vehicle. The basic structure of the door frame is composed of multiple outer frame struts and beams (i.e. horizontal and vertical structural members). In order to improve the structural strength and torsional performance, the door frame needs to be connected to a closed frame structure by welding these struts and beams. Before welding, the struts and beams in the door frame must be accurately spliced, positioned and clamped to ensure that the angles, sizes and joint positions between the components meet the design requirements during welding, so as to control the overall size deviation and welding deformation.

[0003] At present, the splicing method of the door frame is mostly "splicing piece by piece". That is, two adjacent struts or beams are first positioned and spot welded in the clamp, and then the next component is spliced, and the process is repeated until the complete door frame is formed. Since the positions of the components in space are scattered and different in direction, the clamp needs to be manually adjusted or the original clamp needs to be repositioned to adapt to the clamping requirements of different parts each time a new component is spliced. This method is complicated to operate, low in positioning efficiency, and highly dependent on the proficiency of the operator in batch production, which affects the production efficiency and size consistency.

[0004] In addition, in order to complete the initial splicing and positioning, the struts and beams are usually placed horizontally on the processing table for assembly. After the door frame is assembled, the lower surface (the part that is attached to the processing table) cannot be directly welded. In order to realize complete welding, the operator needs to manually loosen the clamp, turn over the whole door frame, and then fix it on the clamp again to weld the other side. This process not only increases the risk of secondary positioning error, but also affects the welding speed. More seriously, the turning process may cause quality problems such as poor clamping, door frame deformation and misaligned welds. SUMMARY

[0005] The application provides a kind of excavator assembly welding robot, solve the current excavator door frame welding needs in fixture each support and support beam are welded in each positioning point, since the component space position is dispersed and direction is different, it needs to be frequently manually adjusted or replaced fixture in splicing process, in addition, splicing is usually carried out on horizontal machining table, after assembly is completed, the lower surface of door frame cannot be welded, and manual overturning is required, which increases the positioning error and operation time, and is prone to cause clamping instability, structural deformation and weld mispositioning quality problems.

[0006] The excavator assembly welding robot provided by the application comprises a support table, an outer frame fixedly connected to the upper part of the support table, and a welding mechanical arm installed on the side of the support table.

[0007] In a possible implementation manner, the push-moving assembly comprises an electric telescopic rod fixedly connected to the front cavity wall of the bearing frame, a support plate fixedly connected to the rear end of the electric telescopic rod, two U-shaped seats fixedly connected to the left and right symmetrical rear end faces of the support plate, and a push plate slidably connected to the front cavity wall of the U-shaped seat through a spring telescopic rod.

[0008] In a possible implementation manner, the self-clamping assembly one comprises two left and right symmetrical sliding grooves opened in the upper end face of the support plate, two rows of sliding grooves are symmetrically arranged in front and back, a sliding block is slidably connected in each sliding groove, a top spring one is fixedly connected between the sliding block and the sliding groove, and an L-shaped clamping plate one is fixedly connected to the upper end faces of the front and rear adjacent sliding blocks.

[0009] In a possible implementation, the self-clamping assembly two comprises two mounting plates fixedly connected to the rear end face of the support in a left-right symmetry, the upper end face of each of the two mounting plates is fixedly connected with a mounting seat through a fixed block, two left-right symmetrical through holes are formed in the mounting seat, a sliding column is slidably connected in each of the through holes in a front-rear symmetry, and a limiting spring is fixedly connected between two front-rear adjacent sliding columns. The end of each of the two left-right adjacent sliding columns away from the mounting seat is fixedly connected with an L-shaped clamping plate two. A two-way telescopic rod is hingedly connected to the lower end face of the mounting seat, and the end of the two-way telescopic rod is hingedly connected to the lower end face of the L-shaped clamping plate two.

[0010] In a possible implementation, the moving assembly comprises a sliding groove formed in the right part of the support, and a U-shaped placing frame slidably connected to the sliding groove. A restoring spring is fixedly connected between the sliding groove and the U-shaped placing frame.

[0011] In a possible implementation, the linkage assembly comprises a top rod, a limiting groove, a strip-shaped top plate, an embedding groove, and a wedge-shaped block one. The rear end face of each of the two U-shaped seats is fixedly connected with a top rod. A limiting groove is formed in the rear end face of the top rod and matched with the L-shaped clamping plate two. The opposite side of each of the two L-shaped clamping plates one is fixedly connected with a strip-shaped top plate. An embedding groove is formed in the opposite side of each of the two top rods. A sliding plate is slidably connected in the embedding groove, and a top spring two is fixedly connected between the sliding plate and the embedding groove. The opposite side of each of the two sliding plates is fixedly connected with a wedge-shaped block one matched with the strip-shaped top plate.

[0012] In a possible implementation, the lower end face of the U-shaped placing frame is fixedly connected with an L-shaped push rod slidingly penetrating the sliding groove. The lower end face of the transverse section of the L-shaped push rod is fixedly connected with a push column. The lower end face of the top rod located in the right part is fixedly connected with a wedge-shaped block two matched with the push column through a connecting rod.

[0013] In a possible implementation, the placing assembly comprises a U-shaped frame fixedly connected to the left part of the upper end face of the support and a C-shaped frame fixedly connected to the rear cavity wall of the bearing frame.

[0014] In a possible implementation, the turning part comprises two rotating shafts penetrating the front and rear walls of the outer frame and being rotatably connected to the front and rear walls, respectively. The front end face of the outer frame is fixedly connected with a driving motor through a connecting frame. The output shaft of the driving motor is fixedly connected to the end of the rotating shaft located in the front part. The bearing frame is fixedly connected between the two rotating shafts. The front end face of the bearing frame is fixedly connected with a positioning column in a left-right symmetry. Two through slots for the positioning column to slide through are formed in the left-right symmetrical front cavity walls of the outer frame. Two C-shaped clamping frames for cooperating with the positioning column are slidably connected to the left and right sides of the outer frame and penetrating the through slots. The two C-shaped clamping frames are distributed in a left-right symmetry.

[0015] In one possible implementation, limit blocks are fixedly connected to the opposite ends of two adjacent sliding columns, and two limit rings for cooperating with the limit blocks are symmetrically fixedly connected to the inner wall of the through hole.

[0016] As can be seen from the above technical solutions, the present invention has the following advantages:

[0017] In this invention, the linkage components in the synchronous splicing section trigger the placement component, the displacement component, the self-clamping component one, the self-clamping component two, and the pushing component to work together in coordination, clamping each component in the excavator gantry frame in sequence and quickly splicing them together as a whole. This allows the placement, clamping, and splicing of all components to be completed sequentially within a unified operation, effectively avoiding the problem of repeated positioning errors caused by multiple disassembly and assembly of the fixtures, and improving the dimensional consistency and welding precision of the finished gantry frame.

[0018] In this invention, the excavator gantry frame, which is clamped by the synchronous splicing part and has been welded on one side, is rotated as a whole by the flipping part to facilitate welding on the other side. This allows the gantry frame to be rotated as a whole while maintaining its initial clamping state, avoiding positioning errors and structural cumulative deviations caused by re-clamping. It ensures that double-sided welding can be carried out in the same reference coordinate system, further improving the welding dimensional accuracy. At the same time, it greatly reduces the downtime, operation switching, and re-alignment time during the gantry frame rotation process, resulting in a more continuous welding process. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the excavator component welding robot structure provided by the present invention.

[0021] Figure 2 This is a schematic diagram of the connection structure between the outer frame and the load-bearing frame provided by the present invention.

[0022] Figure 3 This is a schematic diagram of the installation structure of the synchronous splicing part provided by the present invention.

[0023] Figure 4 Provided by the present invention Figure 3 An enlarged schematic diagram of part A of the structure.

[0024] Figure 5 A schematic diagram of the installation structure of the synchronous splicing part from a low angle provided by the present invention.

[0025] Figure 6 Provided by the present invention Figure 5 An enlarged schematic diagram of part B of the structure.

[0026] Figure 7 This is a bottom-view cross-sectional diagram of the sliding column and mounting base connection structure provided by the present invention.

[0027] Figure 8 This is a schematic diagram showing the placement of the excavator gantry frame within the synchronous splicing section.

[0028] Figure 9 This is a schematic diagram of the cross-sectional structure of the flipping part from the rear view perspective provided by the present invention.

[0029] Figure 10 This is a diagram of the excavator gantry frame shape.

[0030] The above figures include the following reference numerals:

[0031] 1. Support platform; 2. Outer frame; 3. Welding robotic arm; 4. Bearing frame; 5. Synchronous splicing part; 51. Support; 52. Placement component; 521. U-shaped frame; 522. C-shaped frame; 53. Placement component; 531. Sliding groove; 532. U-shaped placement frame; 54. Pushing component; 541. Electric telescopic rod; 542. Support plate; 543. U-shaped seat; 544. Push plate; 55. Self-clamping component one; 551. Sliding groove; 552. L-shaped clamping plate one; 56. Self-clamping component two; 561. Mounting plate; 5 62. Mounting base; 563. Through hole; 564. Sliding column; 565. L-shaped clamp plate II; 566. Bidirectional telescopic rod; 57. Linkage assembly; 571. Top rod; 572. Limiting groove; 573. Strip top plate; 574. Embedded groove; 575. Wedge block I; 576. Slide plate; 577. L-shaped lever; 578. Lever; 579. Wedge block II; 6. Flipping part; 61. Rotating shaft; 62. Drive motor; 63. Positioning column; 64. Through groove; 65. C-shaped frame; 7. Limiting block; 8. Limiting ring. Detailed Implementation

[0032] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of the present invention. However, the present invention can be practiced in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0033] Please see Figure 1The present invention provides a technical solution: a welding robot for excavator components, including a support platform 1, an outer frame 2 fixedly connected to the upper part of the support platform 1, and a welding robotic arm 3 installed on the side of the support platform 1. A bearing frame 4 is rotatably arranged in the outer frame 2 through a flipping part 6. A synchronous splicing part 5 is installed on the bearing frame 4 for quickly positioning and splicing together the various dispersed beams and columns in the excavator door frame.

[0034] Please see Figure 2 and Figure 3 In this embodiment, the synchronous splicing part 5 includes a support 51 fixedly connected between the left and right opposite sides of the support frame 4. A placement component 52 for placing the L-shaped support column segment of the excavator door frame is provided between the support 51 and the support frame 4. A displacement component 53 for placing the vertical support column of the excavator door frame is provided on the right side of the upper end face of the support 51. A pushing component 54 for placing the horizontal support column of the excavator door frame is provided on the front cavity wall of the support frame 4. A self-clamping component 1 55 for automatically centering and clamping the vertical beam of the excavator door frame is provided in the middle of the upper end face of the support 51. A self-clamping component 2 56 for automatically centering and clamping the horizontal beam of the excavator door frame is provided at the rear of the support 51. A linkage component 57 for sequentially triggering the displacement component 53, the self-clamping component 2 56, and the self-clamping component 1 55 to splice the vertical support column, horizontal beam, vertical beam, and L-shaped support column segment in the excavator door frame is provided between the support 51 and the pushing component 54.

[0035] Please see Figure 2 The placement component 52 includes a U-shaped frame 521 fixedly connected to the left side of the upper end face of the support 51 and a C-shaped frame 522 fixedly connected to the rear cavity wall of the bearing frame 4.

[0036] Please see Figure 2 and Figure 3 The pushing assembly 54 includes an electric telescopic rod 541 fixedly connected to the front cavity wall of the bearing frame 4. A support plate 542 is fixedly connected to the rear end of the electric telescopic rod 541. Two U-shaped seats 543 are fixedly connected symmetrically to the left and right rear end faces of the support plate 542. A push plate 544 is slidably connected to the front cavity wall of the U-shaped seats 543 through a spring telescopic rod.

[0037] Please see Figure 3 and Figure 4 The self-clamping assembly 55 includes two symmetrically arranged grooves 551 on the upper surface of the support 51, and two rows of grooves 551 are arranged symmetrically in front and behind. A slider is slidably connected in each groove 551. A top spring (not shown in the figure) is fixedly connected between the slider and the groove 551. An L-shaped clamping plate 552 is fixedly connected to the upper surface of adjacent sliders in front and behind.

[0038] Please see Figure 2 , Figure 3 , Figure 5 , Figure 6and Figure 7 The self-clamping assembly 56 includes two mounting plates 561 that are symmetrically fixed to the rear end face of the support 51. Each mounting plate 561 has a mounting base 562 fixedly connected to its upper end face via a fixing block. Each mounting base 562 has two symmetrically oriented through holes 563. Each through hole 563 has a sliding column 564 symmetrically slidably connected to it. A limit spring is fixedly connected between two adjacent sliding columns 564 on the mounting base 562. The ends of two adjacent sliding columns 564 on the mounting base 562 furthest from the mounting base 562 are also fixedly connected to... There is an L-shaped clamping plate 565, and a bidirectional telescopic rod 566 is hinged to the lower end face of the mounting base 562. The ends of the bidirectional telescopic rod 566 are respectively hinged to the lower end face of the L-shaped clamping plate 565. The opposite ends of two adjacent sliding columns 564 are fixedly connected to limit blocks 7. Two limit rings 8 for cooperating with limit blocks 7 are symmetrically fixedly connected to the inner wall of the through hole 563. During the sliding process of the sliding column 564 driving the limit block 7 in the through hole 563, the limit rings 8 limit the movement stroke of the limit block 7 to prevent the sliding column 564 from falling out of the through hole 563.

[0039] Please see Figure 2 and Figure 3 The displacement component 53 includes a sliding groove 531 opened on the right side of the support 51, a U-shaped placement frame 532 slidably connected to the sliding groove 531, and a return spring fixedly connected between the sliding groove 531 and the U-shaped placement frame 532.

[0040] Please see Figure 3 , Figure 4 and Figure 5 The linkage component 57 includes a push rod 571, a limiting groove 572, a strip-shaped top plate 573, an embedding groove 574, and a wedge block 575. The rear ends of both U-shaped seats 543 are fixedly connected to the push rod 571. The rear ends of the push rod 571 have limiting grooves 572 that mate with L-shaped clamps 565. The opposite sides of the two L-shaped clamps 552 are fixedly connected to the strip-shaped top plate 573. The opposite sides of the two push rods 571 each have an embedding groove 574, and a sliding plate 576 is slidably connected in each embedding groove 574. A top spring is fixedly connected between the slide plate 576 and the embedded groove 574. Both slide plates 576 are fixedly connected to wedge blocks 575 for cooperating with the strip top plate 573 on opposite sides. An L-shaped lever 577 that slides through the sliding groove 531 is fixedly connected to the lower end face of the U-shaped placement frame 532. A lever post 578 is fixedly connected to the lower end face of the horizontal section of the L-shaped lever 577. A wedge block 579 for cooperating with the lever post 578 is fixedly connected to the lower end face of the top rod 571 located on the right side through a connecting rod.

[0041] See Figure 2 and Figure 10First, place the L-shaped support segment a in the excavator gantry frame into the U-shaped frame 521. Then, manually push the L-shaped support segment backward so that the horizontal section of the L-shaped support segment slides into the C-shaped frame 522. Next, place the vertical support segment b into the U-shaped placement frame 532 and adjust the position of the vertical support segment so that its rear end is flush with the rear end face of the L-shaped support segment. Then, place the crossbeam e between the adjacent L-shaped clamping plates 565 in the self-clamping assembly 56. Then, place the vertical beam d between the two L-shaped clamping plates 552 in the self-clamping assembly. Finally, place the last component of the excavator gantry frame assembly, the horizontal support segment c, onto the U-shaped seat 543 and use the spring telescopic rod to push the push plate 544 to touch the front side of the horizontal support segment.

[0042] Then, the electric telescopic rod 541 is extended to push the support plate 542 backward. The support plate 542 then drives the horizontal support column to move backward through the U-shaped seat 543 until the horizontal support column touches the front end of the L-shaped support column section. The support plate 542 continues to drive the U-shaped seat 543 to move backward, which in turn pushes the spring telescopic rod to retract. The U-shaped seat 543 drives the push rod 571 to move backward continuously. The push rod 571 then drives the wedge block 579 to move backward through the connecting rod. During the backward movement of the wedge block 579, its inclined surface presses the deflector 578 to move to the left. The deflector 578 then drives the U-shaped placement frame 532 to move through the L-shaped deflector 577. The U-shaped placement frame 532 then drives the vertical support column to move until the vertical support column moves to the left and touches the right end of the L-shaped support column section. At this time, the left side of the wedge block 579 always touches the left end of the sliding column 564, ensuring that the vertical support column is tightly against the right end of the L-shaped support column section.

[0043] Then, the push rod 571 continues to move backward. When the push rod 571 moves backward a certain distance, it drives the inclined surface of the wedge block 575 to contact the strip top plate 573 through the embedded groove 574 and the sliding plate 576, and drives the wedge block 575 to move backward synchronously. The inclined surface of the wedge block 575 will squeeze the two strip top plates 573 to move closer to each other. The strip top plates 573 then drive the two L-shaped clamps 552 to move closer to each other. The L-shaped clamps 552 then automatically adjust the position of the vertical beam so that the front end abuts against the rear side of the horizontal support and clamps the vertical beam.

[0044] The push rod 571 moves backward a certain distance, and its rear end abuts against the transverse section of the L-shaped clamping plate 565 located at the front. At this time, the wedge block 575 stops pressing against the strip top plate 573. As the push rod 571 continues to move backward, the wedge block 575 drives the sliding plate 576 to gradually retract into the embedded groove 574. The push rod 571 moves backward, pushing the L-shaped clamping plate 565 located at the front to move backward. The L-shaped clamping plate 565 drives the sliding column 564 connected to it to slide in the through hole 563. At the same time, the L-shaped clamping plate 565 also drives the bidirectional telescopic rod 566 to rotate. The bidirectional telescopic rod 566 then drives the L-shaped clamping plate 565 located at the rear to move forward. During the movement of the two L-shaped clamping plates 565, the position of the crossbeam is automatically adjusted to become horizontal and vertical, so that the two ends of the crossbeam abut against the opposite sides of the L-shaped support section and the vertical support section, respectively. At the same time, the front side of the crossbeam abuts against the rear end of the vertical beam. At this time, the crossbeam is clamped.

[0045] Then, the welding robotic arm 3 can be controlled to weld the various columns and beams of the spliced ​​door frame together. After the upper side of the door frame is welded, the rotating part 6 is controlled to rotate the bearing frame 4 180 degrees. Then, the welding robotic arm 3 can be controlled to weld the other side of the door frame. After the door frame is completely welded, the rotating part 6 is controlled to rotate the bearing frame 4 back to its initial position. Finally, the electric telescopic rod 541 is controlled to retract, pulling the support plate 542 forward. The support plate 542 then pulls the top rod 571 forward through the U-shaped seat 543. The forward movement of the top rod 571 then... Moving wedge block 1 575 and wedge block 2 579 forward causes wedge block 1 575 to loosen the vertical beam by self-clamping component 1 55, and moving wedge block 2 579 forward releases the pull on the deflector 578, but the U-shaped placement frame 532 remains in place. At the same time, the top rod 571 also releases the pressure on the L-shaped clamping plate 2 565, causing self-clamping component 2 56 to loosen the crossbeam. Then, manually push the formed door frame forward so that the rear transverse section of the door frame moves out of the C-shaped frame 522. Then lift the door frame upward to move it out of the U-shaped frame 521, and the welded door frame can be removed.

[0046] Please see Figure 2 , Figure 3 and Figure 9 In this embodiment, the flipping part 6 includes two rotating shafts 61 that are respectively rotatably connected to the front and rear wall panels of the outer frame 2. The front end face of the outer frame 2 is fixedly connected to a drive motor 62 through a connecting frame. The output shaft of the drive motor 62 is fixedly connected to the end of the rotating shaft 61 located at the front. The support frame 4 is fixedly connected between the two rotating shafts 61. The front end face of the support frame 4 is symmetrically fixedly connected to positioning posts 63. The front cavity wall of the outer frame 2 is symmetrically opened with two through slots 64 for the positioning posts 63 to slide through. The left and right sides of the outer frame 2 are slidably connected to two C-shaped retaining frames 65 that extend into the through slots 64 for cooperating with the positioning posts 63. The two C-shaped retaining frames 65 are symmetrically distributed on the left and right sides.

[0047] When welding the flipped side of the door frame is required, first manually pull the two C-shaped clip frames 65 away from each other, so that the C-shaped clip frames 65 are removed from the outside of the positioning post 63. Then control the drive motor 62 to drive the rotating shaft 61 to rotate. The rotating shaft 61 then drives the bearing frame 4 to rotate. During the rotation of the bearing frame 4, the positioning post 63 is driven to pass through the through groove 64. After the bearing frame 4 has rotated 180 degrees, the two positioning posts 63 are swapped. Then push the C-shaped clip frames 65 closer to each other and slide them onto the outside of the positioning post 63, so that the flipped bearing frame 4 can be locked and limited. Then the welding robot arm 3 can be controlled to weld the other side of the door frame.

[0048] During operation, the various support pillars and beams of the door frame are placed into the placement component 52, self-clamping component one 55, self-clamping component two 56, placement component 53, and pushing component 54 respectively. Then, the positions of self-clamping component one 55, self-clamping component two 56, placement component 53, and pushing component 54 are adjusted simultaneously by controlling the linkage component 57, so that the various support pillars and beams are spliced ​​together at the same time. Then, the welding robotic arm 3 is controlled to run and quickly weld the various splicing joints of the door frame components. After the welding of one side of the door frame is completed, the flipping part 6 is controlled to drive the bearing frame 4 to flip 180 degrees, which can quickly facilitate the welding of the other side of the door frame. When the overall welding of the door frame is completed, the flipping part 6 is controlled again to drive the bearing frame 4 to flip back to the initial position. Then, the synchronous splicing part 5 is controlled to release and remove the door frame.

[0049] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0050] Furthermore, the terms "first," "second," "number one," and "number two" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first," "second," "number one," or "number two" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0051] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0052] The embodiments described herein are preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, all equivalent changes made in accordance with the structure, shape, and principle of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A welding robot for excavator components, comprising a support platform, an outer frame fixedly connected to the upper part of the support platform, and a welding robotic arm installed on the side of the support platform, characterized in that: The outer frame is provided with a bearing frame that is rotatably mounted through a flipping part. The bearing frame is equipped with a synchronous splicing part for quickly positioning and splicing together the various dispersed beams and columns in the excavator door frame. The synchronous splicing part includes a support fixedly connected between the left and right opposite sides of the support frame. A placement component for placing the L-shaped support column section of the excavator door frame is provided between the support and the support frame. A displacement component for placing the vertical support column of the excavator door frame is provided on the right side of the upper end face of the support. A pushing component for placing the horizontal support column of the excavator door frame is provided on the front cavity wall of the support frame. A self-clamping component one for automatically centering and clamping the vertical beam of the excavator door frame is provided in the middle of the upper end face of the support. A self-clamping component two for automatically centering and clamping the horizontal beam of the excavator door frame is provided at the rear of the support. A linkage component is provided between the support and the pushing component to sequentially activate the displacement component, the self-clamping component two and the self-clamping component one in order to splice the vertical support, the horizontal beam, the vertical beam and the L-shaped support segment in the excavator gantry frame together; The pushing assembly includes an electric telescopic rod fixedly connected to the front cavity wall of the bearing frame. A support plate is fixedly connected to the rear end of the electric telescopic rod. Two U-shaped seats are symmetrically fixedly connected to the rear end face of the support plate. A push plate is slidably connected to the front cavity wall of the U-shaped seats through a spring telescopic rod. The self-clamping assembly includes two symmetrical sliding grooves on the upper surface of the support, and two rows of sliding grooves are symmetrically arranged in front and back. A slider is slidably connected in each sliding groove. A top spring is fixedly connected between the slider and the sliding groove. An L-shaped clamping plate is fixedly connected to the upper surface of the adjacent sliders in front and back. The self-clamping assembly two includes two mounting plates that are symmetrically fixed to the rear end face of the support. The upper surface of each mounting plate is fixedly connected to a mounting seat by a fixing block. The mounting seat has two symmetrical through holes. Each through hole has a sliding column that is symmetrically slidably connected to it. A limit spring is fixedly connected between two adjacent sliding columns. An L-shaped clamping plate two is fixedly connected to the end of the two adjacent sliding columns on the mounting seat that is away from the mounting seat. A bidirectional telescopic rod is hinged to the lower end face of the mounting seat. The ends of the bidirectional telescopic rod are respectively hinged to the lower end face of the L-shaped clamping plate two. The displacement assembly includes a sliding groove on the right side of the support, a U-shaped placement frame slidably connected to the sliding groove, and a return spring fixedly connected between the sliding groove and the U-shaped placement frame. The linkage assembly includes a top rod, a limiting groove, a strip-shaped top plate, an embedding groove, and a wedge block. The rear ends of the two U-shaped seats are fixedly connected to the top rods. The rear ends of the top rods are provided with limiting grooves that cooperate with the L-shaped clamps. The opposite sides of the two L-shaped clamps are fixedly connected to the strip-shaped top plates. The opposite sides of the two top rods are provided with embedding grooves. Slide plates are slidably connected in the embedding grooves. A top spring is fixedly connected between the slide plates and the embedding grooves. The opposite sides of the two slide plates are fixedly connected to wedge blocks for cooperating with the strip-shaped top plates.

2. The excavator component welding robot according to claim 1, characterized in that: The lower end face of the U-shaped placement frame is fixedly connected to an L-shaped lever that slides through the sliding groove. The lower end face of the horizontal section of the L-shaped lever is fixedly connected to a lever post. The lower end face of the top rod located on the right is fixedly connected to a wedge block two for cooperating with the lever post via a connecting rod.

3. The excavator component welding robot according to claim 1, characterized in that: The placement assembly includes a U-shaped frame fixedly connected to the left side of the upper end face of the support and a C-shaped frame fixedly connected to the rear cavity wall of the bearing frame.

4. The excavator component welding robot according to claim 1, characterized in that: The flipping part includes two rotating shafts that are respectively rotatably connected to the front and rear walls of the outer frame. The front end face of the outer frame is fixedly connected to a drive motor via a connecting frame. The output shaft of the drive motor is fixedly connected to the end of the rotating shaft located at the front. The bearing frame is fixedly connected between the two rotating shafts. The front end face of the bearing frame is symmetrically fixedly connected to positioning posts. The front cavity wall of the outer frame has two through slots symmetrically opened on the left and right sides for the positioning posts to slide through. The left and right sides of the outer frame are slidably connected to two C-shaped retaining frames that extend into the through slots to engage with the positioning posts. The two C-shaped retaining frames are symmetrically distributed on the left and right sides.

5. The excavator component welding robot according to claim 1, characterized in that: Each of the two adjacent sliding columns is fixedly connected to a limit block at its opposite end, and two limit rings for cooperating with the limit blocks are symmetrically fixedly connected to the inner wall of the through hole.

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