Excavator bucket rod welding mechanism

Abstract

The utility model discloses an excavator bucket rod welding mechanism, and relates to the technical field of excavator welding, the excavator bucket rod welding mechanism comprises a bottom plate, the top end of the bottom plate is provided with a clamping assembly used for clamping and fixing a bucket rod, and the top end of the bottom plate is provided with a welding assembly used for welding the bucket rod; the welding assembly comprises a welding mechanical arm, the welding mechanical arm is fixedly installed at the top end of the bottom plate, an outer gear ring is rotatably installed on the outer wall of the output end of the welding mechanical arm, a connecting plate is fixedly installed at the top end of the outer gear ring, and a grinding device is arranged at the top end of the connecting plate; according to the bucket rod welding device, the polishing device can be used for polishing rust impurities and the like on the surface of a bucket rod before the bucket rod is welded, then the subsequent bucket rod welding quality is improved, meanwhile, the clamping assembly can clamp and fix the bucket rod and rotate the bucket rod, and different positions of the bucket rod can be welded conveniently.

Description

Technical Field

[0001] This utility model relates to the field of excavator welding technology, specifically to an excavator boom welding mechanism. Background Technology

[0002] Excavators have been around for over 130 years, evolving from steam-driven semi-rotary excavators to electric and internal combustion engine-driven full-rotary excavators, and finally to fully automatic hydraulic excavators using mechatronics technology. Excavators are one of the most important pieces of construction machinery. Their production involves assembling multiple components, with the stick being one of them. The stick is typically a long, box-shaped structure welded from an upper top plate, lower bottom plate, and left and right side plates. As a crucial load-bearing arm, the quality of the stick's welding is vital to its lifespan, making the welding device particularly important in the stick welding process.

[0003] In the prior art, such as the excavator stick displacement welding device disclosed in Chinese Patent No. CN211248898U, a workbench, a welding platform, and a shock-absorbing base are included. The inner walls of the workbench are welded with reinforcing steel bars, and drawer connecting blocks are provided on the inner sides of the reinforcing steel bars. Pulley tracks are provided on the left and right inner walls of the drawer connecting blocks, and internal pulleys of the pulley tracks are connected to a waste collection drawer. The welding platform is positioned above the workbench, and a perforated steel plate is provided on the inner side of the welding platform. Fixed connecting blocks are provided above the welding platform, and a first telescopic rod is installed on the inner side of each fixed connecting block. This utility model provides an excavator stick displacement welding device. By setting a crossbar, the crossbar can be rotated to a suitable position via a second rotating connecting block. This allows the welding angle of the device to be adjusted according to work requirements, solving the problem of welding dead angles and enabling the device to achieve multi-position welding effects, thus improving the device's performance.

[0004] While the aforementioned patent allows for welding of the boom, it has some drawbacks. The device cannot rotate the boom, which means that welding may not be possible in some areas. Additionally, impurities such as rust may accumulate on the surface of the weld joint during welding, potentially affecting the fusion process. Therefore, this invention provides a boom welding mechanism for excavators. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides an excavator boom welding mechanism, which solves the problem that the existing device cannot rotate the boom, which means that welding may not be possible in some parts of the boom. In addition, when welding the boom, impurities such as rust may be present on the surface of the weld joint, which may affect the fusion during boom welding.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a welding mechanism for an excavator boom, comprising a base plate, wherein a clamping assembly is provided at the top of the base plate for clamping and fixing the boom, and a welding assembly is provided at the top of the base plate for welding the boom;

[0007] The clamping assembly includes two slide rails, which are fixedly connected to the base plate. Two movable sliders are slidably connected to the top ends of the two slide rails, and a vertical plate is fixedly installed on the top ends of each of the two movable sliders.

[0008] The welding assembly includes a welding robotic arm, which is fixedly mounted on the top of the base plate. An external gear ring is rotatably mounted on the outer wall of the output end of the welding robotic arm. A connecting plate is fixedly mounted on the top of the external gear ring, and a grinding device is provided on the top of the connecting plate.

[0009] Preferably, two fixing plates are fixedly installed at the top of the base plate, and a bidirectional screw is rotatably installed between the opposite sides of the two fixing plates. The outer wall of the bidirectional screw is threadedly connected to two movable sliders.

[0010] Preferably, a second motor is fixedly installed on the outer wall of each of the two vertical plates, and the output ends of the two second motors pass through the outer wall of the two vertical plates respectively, and mechanical grippers are fixedly installed on each of them.

[0011] Preferably, a first motor is fixedly installed at the top of the base plate, and the output shaft of the first motor passes through the outer wall of the fixed plate and is fixedly connected to one end of the outer wall of the bidirectional screw.

[0012] Preferably, a mounting plate is fixedly installed on the outer wall of the output shaft of the welding robotic arm, a third motor is fixedly installed at the bottom end of the mounting plate, and the output shaft of the third motor passes through the top end of the mounting plate and is fixedly installed with gears.

[0013] Preferably, the gear meshes with the external gear ring, and the output end of the welding robotic arm is provided with a welding head.

[0014] Beneficial effects

[0015] This utility model provides a welding mechanism for the bucket arm of an excavator. Compared with the prior art, it has the following advantages:

[0016] Beneficial effects:

[0017] (1) The excavator boom welding mechanism first uses a clamping assembly to clamp and fix the boom. When welding the boom is required, the third motor can be turned on first. The third motor drives the gear to rotate. During the rotation of the gear, the gear drives the outer gear ring to rotate. The outer gear ring drives the connecting plate and the grinding device to move to the side close to the boom. Then the grinding device is turned on. The welding robot arm drives the grinding device to grind the boom where it needs to be welded, and grinds and cleans some rust and impurities on the boom surface, thereby improving the subsequent welding quality of the boom.

[0018] (2) When welding the stick of the excavator is required, the distance between the two mechanical jaws is moved according to the length of the stick. Then the stick is moved between the two mechanical jaws. At this time, the two mechanical jaws are activated to clamp and fix the stick. The cooperation between the two can clamp and fix sticks of different sizes. When welding is required after fixing, two second motors can be activated at the same time. The two second motors drive the two mechanical jaws to rotate, and the two mechanical jaws drive the stick to rotate, so that the welding components can weld different positions of the stick. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the clamping component of this utility model;

[0021] Figure 3 This is a schematic diagram of the welding assembly of this utility model;

[0022] Figure 4 This is a schematic diagram of the welding assembly from another perspective of the present invention.

[0023] In the diagram: 1. Base plate; 2. Clamping assembly; 21. Slide rail; 22. Bidirectional screw; 23. Fixing plate; 24. First motor; 25. Moving slider; 26. Vertical plate; 27. Second motor; 28. Mechanical gripper; 3. Welding assembly; 31. Welding robotic arm; 32. External gear ring; 33. Connecting plate; 34. Grinding device; 35. Welding head; 36. Mounting plate; 37. Third motor; 38. Gear. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] This utility model provides two technical solutions:

[0026] Figures 1-4 The first embodiment is shown: an excavator stick welding mechanism, including a base plate 1, a clamping assembly 2 for clamping and fixing the stick at the top of the base plate 1, and a welding assembly 3 for welding the stick at the top of the base plate 1.

[0027] The clamping assembly 2 includes two slide rails 21, which are fixedly connected to the base plate 1. Two movable sliders 25 are slidably connected to the top of the two slide rails 21. The slide rails 21 can support and limit the movable sliders 25. A vertical plate 26 is fixedly installed on the top of each of the two movable sliders 25.

[0028] The welding assembly 3 includes a welding robotic arm 31, which is fixedly installed on the top of the base plate 1. An external gear ring 32 is rotatably installed on the outer wall of the output end of the welding robotic arm 31. A connecting plate 33 is fixedly installed on the top of the external gear ring 32. A grinding device 34 is provided on the top of the connecting plate 33. The grinding device 34 is existing technology and can be driven by a motor to rotate the grinding disc to grind the boom. The welding robotic arm 31 is existing technology and is often composed of multiple joints, which can achieve flexible movement and can adjust the position to weld different positions of the boom.

[0029] Two fixed plates 23 are fixedly installed on the top of the base plate 1. A bidirectional screw 22 is rotatably installed between the opposite sides of the two fixed plates 23. The outer wall of the bidirectional screw 22 is threadedly connected to two movable sliders 25. The bidirectional screw 22 is existing technology. When the bidirectional screw 22 rotates, it can drive the two movable sliders 25 to move on the slide rail 21.

[0030] A second motor 27 is fixedly installed on the outer wall of each of the two vertical plates 26. The output ends of the two second motors 27 pass through the outer wall of the two vertical plates 26 respectively. The second motors 27 can drive the mechanical grippers 28 to rotate, and each is fixedly installed with mechanical grippers 28. The mechanical grippers 28 are existing technology and can clamp and fix the boom.

[0031] A first motor 24 is fixedly installed at the top of the base plate 1. The output shaft of the first motor 24 passes through the outer wall of the fixed plate 23 and is fixedly connected to one end of the outer wall of the bidirectional screw 22. The first motor 24 can drive the bidirectional screw 22 to rotate.

[0032] Figures 1-4 The second embodiment is shown. The main difference from the first embodiment is that a mounting plate 36 is fixedly installed on the outer wall of the output shaft of the welding robot arm 31, a third motor 37 is fixedly installed at the bottom end of the mounting plate 36, the output shaft of the third motor 37 passes through the top end of the mounting plate 36, and a gear 38 is fixedly installed thereon.

[0033] The gear 38 is meshed with the external gear ring 32. The output end of the welding robot arm 31 is equipped with a welding head 35. The welding robot arm 31 can drive the welding head 35 to move. The third motor 37 can drive the gear 38 to rotate. During the rotation of the gear 38, the external gear ring 32 is driven to rotate. The external gear ring 32 then drives the grinding device 34 to move, which facilitates the adjustment of the position of the grinding device 34.

[0034] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.

[0035] During operation, when welding of the boom is required, the first motor 24 is activated according to the boom's length. The first motor 24 drives the bidirectional screw 22 to rotate. During rotation, the bidirectional screw 22 drives two movable sliders 25 to move, thereby adjusting the distance between the two mechanical grippers 28. The boom is then moved between the two mechanical grippers 28, which are then activated to clamp and fix the boom. The cooperation between the two grippers allows for clamping and fixing booms of different sizes. When the boom is fixed and welding is required, the third motor 37 is activated. The third motor 37 drives the gear 38 to rotate, which in turn drives the external gear ring 32 to rotate. The external gear ring 32 moves the connecting plate 33 and the grinding device 34 to the side closer to the boom. Then, the grinding device 34 is activated, and the welding robotic arm 31 drives the grinding device 34 to grind the boom as needed. The welding area needs to be ground to remove rust and impurities from the surface of the boom, thereby improving the subsequent welding quality. After the grinding device 34 finishes grinding the boom, the third motor 37 can be activated. The third motor 37 drives the gear 38 to rotate, and the gear 38 drives the connecting plate 33 on the outer gear ring 32 and the grinding device 34 to move to the side away from the boom, so as to avoid the grinding device 34 affecting the welding of the boom. Then, the welding robot arm 31 drives the welding head 35 to move and weld the boom. When one side of the boom is welded and other parts of the boom need to be welded, two second motors 27 can be activated at the same time. The two second motors 27 drive two mechanical grippers 28 to rotate, and the two mechanical grippers 28 drive the boom to rotate, so that the welding assembly 3 can weld different parts of the boom, thereby improving the welding effect of the boom.

[0036] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0037] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A welding mechanism for excavator arm, comprising a base plate (1), characterized in that: The top of the base plate (1) is provided with a clamping assembly (2) for clamping and fixing the boom, and the top of the base plate (1) is provided with a welding assembly (3) for welding the boom; The clamping assembly (2) includes two slide rails (21), which are fixedly connected to the base plate (1). Two movable sliders (25) are slidably connected to the top of the two slide rails (21), and vertical plates (26) are fixedly installed on the top of each of the two movable sliders (25). The welding assembly (3) includes a welding robotic arm (31), which is fixedly installed on the top of the base plate (1). An external gear ring (32) is rotatably installed on the outer wall of the output end of the welding robotic arm (31). A connecting plate (33) is fixedly installed on the top of the external gear ring (32), and a grinding device (34) is provided on the top of the connecting plate (33).

2. A welding mechanism for an excavator arm according to claim 1, characterized in that: Two fixing plates (23) are fixedly installed at the top of the base plate (1). A bidirectional screw (22) is rotatably installed between the opposite sides of the two fixing plates (23). The outer wall of the bidirectional screw (22) is threadedly connected to two movable sliders (25).

3. The excavator arm welding mechanism of claim 1, wherein: The outer walls of the two vertical plates (26) are each fixedly equipped with a second motor (27). The output ends of the two second motors (27) pass through the outer walls of the two vertical plates (26) respectively, and each is fixedly equipped with a mechanical gripper (28).

4. The excavator arm welding mechanism of claim 1, wherein: The top of the base plate (1) is fixedly installed with a first motor (24). The output shaft of the first motor (24) passes through the outer wall of the fixed plate (23) and is fixedly connected to one end of the outer wall of the bidirectional screw (22).

5. The excavator boom welding mechanism according to claim 1, characterized in that: The welding robotic arm (31) has an output shaft with a mounting plate (36) fixedly installed on its outer wall. A third motor (37) is fixedly installed at the bottom of the mounting plate (36). The output shaft of the third motor (37) passes through the top of the mounting plate (36) and has a gear (38) fixedly installed thereon.

6. A welding mechanism for an excavator arm according to claim 5, wherein: The gear (38) is meshed with the external gear ring (32), and the output end of the welding robot arm (31) is provided with a welding head (35).

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