A welding tool for a bucket arm

Abstract

The utility model provides a kind of bucket rod welding tool, belong to bucket rod welding processing technical field, including base, the top of base rotation setting movable plate, and is equipped with driving mechanism;The top of movable plate is fixedly set first guide rod, and the outer surface of first guide rod is limitedly slidably equipped with placing plate;The top of placing plate is limitedly slidably set two clamping plates, and movable plate is equipped with transmission part acting on two clamping plates;The top of movable plate is limitedly slidably set slide rod, and the bottom of placing plate is fixedly set fixed block, and linkage assembly is equipped between fixed block and slide rod. By the continued pushing of external pushing device, placing plate will drop and compress third elastic element, so that two clamping plates are close to each other, to complete the clamping of bucket rod. This design significantly simplifies the operation logic, and the clamping process is naturally coherent. Multiple actions are integrated into a coherent pressing process, effectively improving processing efficiency and facilitating practical use.

Description

Technical Field

[0001] This utility model belongs to the field of boom welding technology, specifically relating to a boom welding fixture. Background Technology

[0002] The boom, a key structural component of heavy construction machinery such as excavators and cranes, is typically welded together from the main boom in the middle and the connectors at both ends. The welding quality of the boom directly affects the stress resistance and service life of the entire working device. Therefore, extremely high requirements are placed on the precision, stability, and ease of operation of the welding fixtures during the manufacturing process.

[0003] In existing boom welding processes, traditional clamping methods mostly employ manual bolt tightening or hydraulic drive, which are cumbersome and labor-intensive, resulting in low production efficiency and hindering practical application. Therefore, a new boom welding fixture is urgently needed.

[0004] A patent with publication number CN214978845U discloses a welding device for displacement of excavator sticks. The device includes clamping plates, sliders, grooves, springs, and fixing plates. In use, the clamping plates are pulled outwards to both sides, causing the sliders to slide within the grooves and compress the springs. The stick to be welded is placed on the fixing plate, and the tension on the clamping plates is released. The elastic potential energy of the springs drives the sliders to slide back to their original position within the grooves, thus clamping and limiting the stick position via the clamping plates.

[0005] However, the above-mentioned solution requires operators to use external pulling equipment to pull the two clamping plates outwards when placing the boom on top of the fixed plate, compressing the springs and creating space for the boom. This preparatory operation disrupts the entire process and causes intermittent pauses, making the clamping process less smooth and continuous, and adding unnecessary steps and complexity. Furthermore, the clamping force of the clamping plates on the boom relies entirely on the spring's restoring force. This elastic clamping method results in fluctuating clamping force and stability due to changes in spring performance, leading to a gradual decrease in clamping effectiveness over long-term use, making it unsuitable for practical application. Utility Model Content

[0006] To address the problems existing in the background art, this utility model provides a welding fixture for bucket booms.

[0007] To achieve the above objectives, the present invention provides the following technical solution:

[0008] A welding fixture for a boom includes a base, a movable plate rotatably mounted on the top of the base, and a driving mechanism acting on the movable plate; a first guide rod fixedly mounted on the top of the movable plate, a placement plate slidably fitted onto the outer surface of the first guide rod, and a third elastic element between the placement plate and the movable plate; two clamping plates slidably mounted on the top of the placement plate, the two clamping plates sliding towards or away from each other, and a transmission component acting on the two clamping plates on the movable plate, with a second elastic element between each clamping plate and the placement plate; a sliding rod slidably mounted on the top of the movable plate, with a first elastic element between the sliding rod and the movable plate; and a fixing block fixedly mounted on the bottom of the placement plate, with a linkage component between the fixing block and the sliding rod, and the two engaging in transmission cooperation.

[0009] Furthermore, the drive mechanism includes a servo motor, which is fixedly embedded in the top of the base, and its output shaft is coaxially fixedly provided with a first gear; a second gear is fixedly provided at the bottom of the movable plate, and the second gear meshes with the first gear for transmission.

[0010] Furthermore, the third elastic element is a third spring, one end of which is fixedly connected to the placement plate, and the other end is fixedly connected to the movable plate.

[0011] Furthermore, the transmission component includes connecting rods, with two connecting rods slidably and through the placement plate, and the connecting rods being fixedly connected to the clamping plates one-to-one; a first wedge block is fixedly installed on the top of the movable plate, and the connecting rods and the first wedge block are in inclined contact transmission cooperation.

[0012] Furthermore, the second elastic element includes a second spring, a second groove is formed in the placement plate, and the connecting rod is limited and slidably engaged with the second groove; the second spring is disposed in the second groove, one end of which is fixedly connected to the connecting rod, and the other end is fixedly connected to the inner wall of the second groove.

[0013] Furthermore, the first elastic element includes a first spring, a first groove is formed on the top of the movable plate, and a second guide rod is fixedly disposed in the first groove; the slide rod is slidably disposed in the first groove and slidably sleeved on the outer surface of the second guide rod; the first spring is sleeved on the outside of the second guide rod, one end of which is fixedly connected to the inner wall of the first groove, and the other end is fixedly connected to the slide rod.

[0014] Furthermore, the linkage component includes a second wedge block, which is fixedly disposed on the outer surface of the slide bar, and its inclined surface is in contact with the fixed block for transmission.

[0015] Furthermore, a buffer block is fixedly installed at the top of the slide bar.

[0016] This application has the following beneficial effects:

[0017] 1. After the stick is positioned at the center of the placement plate by the external pushing device, the placement plate descends and compresses the third elastic element through continued pushing. This causes the two clamping plates to move closer together with the assistance of the transmission component and the second elastic element, thus clamping and fixing the stick. Simultaneously, during the descent of the placement plate, the sliding rod slides through the linkage component and abuts against the fixing block for limitation, automatically completing the vertical limitation of the placement plate. This design significantly simplifies the operation logic, making the clamping process natural and seamless. By integrating multiple actions into a single, continuous downward pressing process, it effectively improves processing efficiency and is more conducive to practical application.

[0018] 2. As the two clamping plates approach each other, they rigidly clamp the boom. This clamping method effectively prevents any slight movement or displacement of the workpiece during the welding process, fundamentally ensuring the stability of the clamping and providing a solid foundation for high-precision welding, resulting in superior practical effects. Attached Figure Description

[0019] The above and other objects, features, and advantages of the present invention will become readily understood by reading the following detailed description of exemplary embodiments with reference to the accompanying drawings. In the drawings, several embodiments of the present invention are shown by way of example and not limitation, and like or corresponding reference numerals denote like or corresponding parts, wherein:

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0021] Figure 2 This is a cross-sectional view of the utility model;

[0022] Figure 3 This is a utility model Figure 2 A magnified view of a portion of point A in the middle;

[0023] Figure 4 This is a utility model Figure 2 A magnified view of a portion of point B in the middle.

[0024] Explanation of reference numerals in the attached figures:

[0025] 1. Base; 2. Servo motor; 3. First guide rod; 4. First spring; 5. Second gear; 6. First slide groove; 7. Slide rod; 8. Placement plate; 9. Clamping plate; 10. Rubber layer; 11. Connecting rod; 12. First wedge block; 13. Buffer block; 14. Second wedge block; 15. Welding robotic arm; 16. Second guide rod; 17. Second spring; 18. First gear; 19. Movable plate; 20. Third spring; 21. Second slide groove; 22. Third slide groove; 23. Fixing block. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Those skilled in the art should understand that the embodiments described below are only some, not all, of the embodiments disclosed. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0027] like Figures 1-4 As shown, the technical solution adopted by this utility model is as follows: a welding fixture for a boom includes a base 1, a movable plate 19 is rotatably arranged on the top of the base 1, and a driving mechanism is provided that acts on the movable plate 19.

[0028] Specifically, the drive mechanism includes a servo motor 2, which is fixedly embedded in the top of the base 1. The output shaft of the servo motor 2 is coaxially fixed with a first gear 18. A second gear 5 is fixedly installed at the bottom of the movable plate 19, and the second gear 5 meshes with the first gear 18 for transmission.

[0029] A number of first guide rods 3 are fixedly installed on the top of the movable plate 19. The outer surfaces of the first guide rods 3 are limited and slidably fitted with the same placement plate 8. A third elastic element is provided between the placement plate 8 and the movable plate 19.

[0030] Specifically, the third elastic element includes a third spring 20. The third spring 20 is provided between the placement plate 8 and the movable plate 19. One end of the third spring 20 is fixedly connected to the placement plate 8, and the other end is fixedly connected to the movable plate 19.

[0031] Two clamping plates 9 are slidably positioned at the top of the placement plate 8. The two clamping plates 9 slide towards or away from each other, and the movable plate 19 is provided with a transmission component that acts on the two clamping plates 9. Each clamping plate 9 is provided with a second elastic component between itself and the placement plate 8.

[0032] Furthermore, a third groove 22 is provided on the placement plate 8 for the clamping plate 9 to slide in a limited manner.

[0033] Furthermore, rubber layers 10 are fixedly provided on the opposing sides of the two clamping plates 9 to improve the clamping effect while providing better protection for the stick.

[0034] Specifically, the transmission component includes connecting rods 11, two connecting rods 11 are slidably and through the inner limit plate 8, and two first wedge blocks 12 are fixedly installed on the top of the movable plate 19; the connecting rods 11 are fixedly connected to the clamping plate 9 one-to-one, and also have a sliding contact transmission cooperation with the inclined surface of the corresponding first wedge block 12.

[0035] Specifically, the second elastic element includes a second spring 17, and two second slide grooves 21 are opened in the placement plate 8. The connecting rod 11 is in a one-to-one correspondence with the second slide groove 21 for limited sliding cooperation. A second spring 17 is fixedly installed in each second slide groove 21. One end of the second spring 17 is fixedly connected to the connecting rod 11, and the other end is fixedly connected to the inner wall of the second slide groove 21.

[0036] The top of the movable plate 19 is limited by a sliding rod 7, and a first elastic element is provided between the sliding rod 7 and the movable plate 19; the bottom of the placement plate 8 is fixedly provided with a fixing block 23, and a linkage component is provided between the fixing block 23 and the sliding rod 7, and the two are in transmission cooperation.

[0037] Specifically, the first elastic element includes a first spring 4, a first groove 6 is formed on the top of the movable plate 19, and a second guide rod 16 is fixedly installed in the first groove 6; the connecting rod 11 is both limited and slidably installed in the first groove 6 and slidably sleeved on the outer surface of the second guide rod 16.

[0038] The outer surface of the second guide rod 16 is fitted with a first spring 4. One end of the first spring 4 is fixedly connected to the inner wall of the first slide groove 6, and the other end is fixedly connected to the slide rod 7.

[0039] Specifically, the linkage component includes a second wedge block 14, which is fixedly mounted on the outer surface of the slide rod 7, and the inclined surface of the second wedge block 14 is in contact with the fixed block 23 for transmission.

[0040] More specifically, a buffer block 13 is fixedly installed at the top of the slide bar 7, and the buffer block 13 is in contact with the bottom of the movable plate 19 for transmission.

[0041] In addition, a welding robotic arm 15 is fixedly mounted on the top of the base 1.

[0042] It should be noted that the welding robotic arm 15 is a conventional technology and will not be described in detail in this application.

[0043] Working principle: In the initial state, the placement plate 8 is in the highest position under the support of the third spring 20, the two clamping plates 9 are in a back-to-back separated state under the action of the second spring 17, and the slide rod 7 is also in the initial position under the action of the first spring 4.

[0044] Subsequently, the operator uses an external pushing device (a conventional existing technology) to place the stick to be welded in the center of the placement plate 8 and continuously applies a downward force. Under the pressure, the placement plate 8 slides down along the first guide rod 3, while compressing the third spring 20.

[0045] As the placement plate 8 descends, the connecting rod 11 fixed thereon also descends. The connecting rod 11 contacts the inclined surface of the first wedge block 12 fixed on the movable plate 19 and slides relative to it. Under the action of the wedge surface, the connecting rod 11 is forced to overcome the elastic force of the second spring 17 and move horizontally along the second slide groove 21 towards the center (i.e., towards the boom), thereby causing the clamping plate 9 fixed thereto to slide towards each other in the third slide groove 22 to rigidly clamp the boom.

[0046] When the placement plate 8 continues to descend to a certain position, the fixing block 23 fixed to its bottom contacts the inclined surface of the second wedge block 14 fixed to the slide bar 7. The fixing block 23 squeezes the second wedge block 14, forcing the slide bar 7 to overcome the elastic force of the first spring 4 and slide horizontally along the first slide groove 6, making room for the fixing block 23 to continue descending until the fixing block 23 completely passes the second wedge block 14.

[0047] When the fixing block 23 passes the second wedge block 14, the first spring 4 immediately pushes the slide bar 7 to reset, so that the fixing block 23 is stuck under the second wedge block 14. At the same time, the buffer block 13 at the top of the slide bar 7 rises and just touches the bottom of the placement plate 8. This process completes the vertical limitation of the placement plate 8 and prevents it from rebounding.

[0048] After clamping and locking, the welding robotic arm 15 can perform welding operations on the firmly fixed boom. When it is necessary to adjust the welding position, the servo motor 2 is started, driving the first gear 18 to rotate. Through the second gear 5 meshing with it, the entire movable plate 19 and all its components rotate on the base 1, thereby adjusting the weld to the optimal welding position.

[0049] After welding is completed, simply pull the slide bar 7 outward and compress the first spring 4 to disengage the second wedge block 14 from the fixed block 23. Then, under the elastic action of the third spring 20, the placement plate 8 is reset upward. The entire system executes the above steps in reverse order, automatically releases the boom, and returns to the initial state.

[0050] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A welding fixture for bucket booms, characterized in that, The system includes a base (1), on which a movable plate (19) is rotatably mounted and a driving mechanism is provided for the movable plate (19); a first guide rod (3) is fixedly mounted on the top of the movable plate (19), and a placement plate (8) is slidably mounted on the outer surface of the first guide rod (3), and a third elastic element is provided between the placement plate (8) and the movable plate (19); two clamping plates (9) are slidably mounted on the top of the placement plate (8), and the two clamping plates (9) slide towards or away from each other, and a transmission element is provided on the movable plate (19) for the two clamping plates (9), and a second elastic element is provided between each clamping plate (9) and the placement plate (8); a slide rod (7) is slidably mounted on the top of the movable plate (19), and a first elastic element is provided between the slide rod (7) and the movable plate (19); a fixing block (23) is fixedly mounted on the bottom of the placement plate (8), and a linkage component is provided between the fixing block (23) and the slide rod (7), and the two are in transmission cooperation.

2. The boom welding fixture according to claim 1, characterized in that, The drive mechanism includes a servo motor (2), which is fixedly embedded in the top of the base (1), and its output shaft is coaxially fixedly provided with a first gear (18); a second gear (5) is fixedly provided at the bottom of the movable plate (19), and the second gear (5) meshes with the first gear (18) for transmission.

3. The boom welding fixture according to claim 1, characterized in that, The third elastic element is a third spring (20), one end of which is fixedly connected to the placement plate (8), and the other end is fixedly connected to the movable plate (19).

4. The boom welding fixture according to claim 1, characterized in that, The transmission component includes a connecting rod (11). Two connecting rods (11) are slidably and through the placement plate (8). The connecting rods (11) are fixedly connected to the clamping plate (9) one by one. A first wedge block (12) is fixedly installed on the top of the movable plate (19). The connecting rods (11) and the first wedge block (12) are in inclined contact transmission cooperation.

5. The boom welding fixture according to claim 4, characterized in that, The second elastic element includes a second spring (17), a second groove (21) is opened in the placement plate (8), and the connecting rod (11) is limited and slidably engaged with the second groove (21); the second spring (17) is disposed in the second groove (21), one end of which is fixedly connected to the connecting rod (11), and the other end is fixedly connected to the inner wall of the second groove (21).

6. The boom welding fixture according to claim 1, characterized in that, The first elastic element includes a first spring (4), a first groove (6) is opened on the top of the movable plate (19), and a second guide rod (16) is fixedly installed in the first groove (6); the slide rod (7) is limited and slidably installed in the first groove (6) and slidably sleeved on the outer surface of the second guide rod (16); the first spring (4) is sleeved on the outside of the second guide rod (16), one end of which is fixedly connected to the inner wall of the first groove (6), and the other end is fixedly connected to the slide rod (7).

7. The boom welding fixture according to claim 1, characterized in that, The linkage component includes a second wedge block (14), which is fixedly disposed on the outer surface of the slide bar (7), and its inclined surface is in contact with the fixed block (23) for transmission.

8. The boom welding fixture according to claim 1, characterized in that, A buffer block (13) is fixedly installed on the top of the slide bar (7).

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