Welding displacement mechanism for movable arm of excavator

Abstract

The utility model relates to the technical field of welding fixtures, in particular to a welding displacement mechanism for a movable arm of an excavator, which comprises a first base, a first lead screw component is radially arranged in the first base and is in sliding connection with a second base, a second lead screw component is transversely arranged on the second base, and the second lead screw component is in sliding connection with the second base. And chuck assemblies are arranged at the two ends of the second lead screw assembly. According to the utility model, workpieces of different models can be used on the same mechanism, and accessories do not need to be replaced, so that the flexibility of a production line is improved; and the butt joints of all the workpieces can be subjected to ship-shaped welding, so that the welding quality is improved, and the production efficiency of a production line is also improved.

Description

Technical Field

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

[0002] The excavator boom is one of the key working devices of an excavator, and welding it requires high precision. Welding the excavator boom involves clamping it, but existing clamping devices, depending on the excavator model, cannot achieve automatic repositioning of the joint for ship-shaped welding, resulting in suboptimal weld quality.

[0003] When welding the butt joint on the boom, the weld needs to be welded uphill. This is not only detrimental to the welding quality, but also inefficient, taking up time for equipment welding and affecting the production cycle. Utility Model Content

[0004] To address the aforementioned problems, this utility model provides a welding displacement mechanism for excavator booms, enabling ship-shaped welding of all workpiece joints, which improves welding quality, increases production line flexibility, and enhances production efficiency.

[0005] To achieve the above objectives, the technical solution of this utility model is as follows: a welding displacement mechanism for an excavator boom, comprising a first base, a first lead screw assembly radially disposed inside the first base, the first lead screw assembly being slidably connected to a second base, a second lead screw assembly transversely disposed on the second base, and clamp assemblies disposed at both ends of the second lead screw assembly.

[0006] As a further embodiment of this utility model: the top and bottom of the first base are provided with first through holes.

[0007] As a further embodiment of this utility model: the first lead screw assembly includes a lead screw, the top end of the lead screw passes through a first through hole at the top of the first base and is connected to a first bearing, the bottom end of the lead screw passes through a first through hole at the bottom of the first base and is rotatably connected to a first reducer, the first reducer is driven by a first servo motor, a lead screw nut is threaded onto the lead screw, and a lead screw nut seat is fixedly connected to the lead screw nut.

[0008] As a further improvement of this utility model: the second base is fixedly connected to the nut seat, and a second through hole is provided on both sides of the second base.

[0009] As a further embodiment of this utility model: the second lead screw assembly includes a bidirectional nut lead screw, one end of which is connected to a second bearing through a second through hole on one side of the second base, and the other end of which is rotatably connected to a second reducer through a second through hole on the other side of the second base. The second reducer is connected to a second servo motor for transmission. A left-handed nut and a right-handed nut are provided opposite to each other on the bidirectional nut lead screw, and a nut seat is provided on each of the left-handed nut and the right-handed nut.

[0010] As a further embodiment of this utility model: the clamp assembly includes a transition plate, one side of which is fixedly connected to a nut seat, and the other side is provided with a positioning support, the inner side of which is provided with a positioning head.

[0011] As a further embodiment of this utility model: the first base is provided with a first guide rail in the radial direction, and the bottom of the second base is provided with a first slider, the first slider being slidably connected to the first guide rail.

[0012] As a further embodiment of this utility model: the second base is provided with a second guide rail, and the two sides of the bottom of the transition plate are provided with second sliders, which are slidably connected to the second guide rail.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0014] 1. This utility model uses the rotation of the first servo motor to drive the second base to rise and fall on the first guide rail. The rotation of the second servo motor drives the clamping of the chuck assembly, so that different types of workpieces can be used on the same mechanism without the need to replace parts, thus improving the flexibility of the production line.

[0015] 2. This utility model enables ship-shaped welding of the joints of all workpieces, which improves both the quality of welding and the production efficiency of the production line. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the first base structure of this utility model;

[0018] Figure 3 This is a schematic diagram of the first lead screw assembly of this utility model;

[0019] Figure 4 This is a schematic diagram of the second base structure of this utility model;

[0020] Figure 5 This is a schematic diagram of the second lead screw assembly of this utility model;

[0021] Figure 6 This is a schematic diagram of the clamp assembly structure of this utility model;

[0022] Figure 7 This is a schematic diagram of the first guide rail structure of this utility model;

[0023] In the diagram: 1. First base; 11. First through hole; 2. First lead screw assembly; 21. Lead screw; 22. First bearing; 23. First reducer; 24. First servo motor; 25. Nut; 26. Nut seat; 3. Second base; 31. Second through hole; 32. First slider; 4. Second lead screw assembly; 41. Two-way nut lead screw; 42. Second bearing; 43. Second reducer; 44. Second servo motor; 45. Left-hand nut; 46. Right-hand nut; 47. Nut seat; 5. Chuck assembly; 51. Transition plate; 52. Positioning support; 53. Positioning head; 54. Second slider; 6. First guide rail; 7. Second guide rail. 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] refer to Figures 1 to 7 A welding displacement mechanism for an excavator boom includes a first base 1, a first lead screw assembly 2 is radially arranged inside the first base 1, the first lead screw assembly 2 is slidably connected to a second base 3, a second lead screw assembly 4 is transversely arranged on the second base 3, and clamp assemblies 5 are provided at both ends of the second lead screw assembly 4.

[0026] The first base 1 has a first through hole 11 at both the top and bottom.

[0027] The first lead screw assembly 2 includes a lead screw 21. The top end of the lead screw 21 passes through the first through hole 11 at the top of the first base 1 and is connected to the first bearing 22. The bottom end of the lead screw 21 passes through the first through hole 11 at the bottom of the first base 1 and is rotatably connected to the first reducer 23. The first reducer 23 is connected to the first servo motor 24 for transmission. A lead screw nut 25 is threaded onto the lead screw 21, and a lead screw nut seat 26 is fixedly connected to the lead screw nut 25.

[0028] The second base 3 is fixedly connected to the nut seat 26, and the second base 3 has a second through hole 31 on both sides.

[0029] The second lead screw assembly 4 includes a bidirectional nut screw 41. One end of the bidirectional nut screw 41 is connected to the second bearing 42 through the second through hole 31 on one side of the second base 3. The other end of the bidirectional nut screw 41 is rotatably connected to the second reducer 43 through the second through hole 31 on the other side of the second base 3. The second reducer 43 is connected to the second servo motor 44 for transmission. A left-handed nut 45 and a right-handed nut 46 are provided opposite to each other on the bidirectional nut screw 41. Nut seats 47 are provided on the left-handed nut 45 and the right-handed nut 46 respectively.

[0030] The chuck assembly 5 includes a transition plate 51, one side of which is fixedly connected to the nut seat 47, and the other side is provided with a positioning support 52, with a positioning head 53 provided on the inner side of the positioning support 52.

[0031] The first base 1 is provided with a first guide rail 6 in the radial direction, and the bottom of the second base 3 is provided with a first slider 32, which is slidably connected to the first guide rail 6.

[0032] The second base 3 is provided with a second guide rail 7, and the two sides of the bottom of the transition plate 51 are provided with second sliders 54, which are slidably connected to the second guide rail 7.

[0033] 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 displacement mechanism for a boom of an excavator, comprising a first base (1), characterized in that: The first base (1) is provided with a first lead screw assembly (2) in the inner radial direction. The first lead screw assembly (2) is slidably connected to the second base (3). The second base (3) is provided with a second lead screw assembly (4) in the horizontal direction. The two ends of the second lead screw assembly (4) are provided with clamp assemblies (5). The second lead screw assembly (4) includes a bidirectional nut screw (41). One end of the bidirectional nut screw (41) is connected to the second bearing (42) through the second through hole (31) on one side of the second base (3). The other end of the bidirectional nut screw (41) is rotatably connected to the second reducer (43) through the second through hole (31) on the other side of the second base (3). The second reducer (43) is connected to the second servo motor (44) for transmission. The bidirectional nut screw (41) is provided with a left-handed nut (45) and a right-handed nut (46) opposite to each other. The left-handed nut (45) and the right-handed nut (46) are respectively provided with nut seats (47). The clamp assembly (5) includes a transition plate (51), one side of which is fixedly connected to the nut seat (47), and the other side is provided with a positioning support (52), and the inner side of the positioning support (52) is provided with a positioning head (53).

2. The welding displacement mechanism for an excavator boom according to claim 1, characterized in that: The first base (1) has a first through hole (11) at both the top and bottom.

3. The welding displacement mechanism for an excavator boom according to claim 2, characterized in that: The first lead screw assembly (2) includes a lead screw (21). The top end of the lead screw (21) passes through the first through hole (11) at the top of the first base (1) and is connected to the first bearing (22). The bottom end of the lead screw (21) passes through the first through hole (11) at the bottom of the first base (1) and is rotatably connected to the first reducer (23). The first reducer (23) is connected to the first servo motor (24) for transmission. A lead screw nut (25) is threaded onto the lead screw (21), and a lead screw nut seat (26) is fixedly connected onto the lead screw nut (25).

4. The welding displacement mechanism for an excavator boom according to claim 3, characterized in that: The second base (3) is fixedly connected to the nut seat (26), and a second through hole (31) is provided on both sides of the second base (3).

5. The welding displacement mechanism for an excavator boom according to claim 4, characterized in that: The first base (1) is provided with a first guide rail (6) in the radial direction, and the bottom of the second base (3) is provided with a first slider (32), and the first slider (32) is slidably connected to the first guide rail (6).

6. The welding displacement mechanism for an excavator boom according to claim 5, characterized in that: The second base (3) is provided with a second guide rail (7), and the two sides of the bottom of the transition plate (51) are provided with second sliders (54), and the second sliders (54) are slidably connected to the second guide rail (7).

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