Welding tool for front protective net of excavator cab

Abstract

The utility model discloses an excavator cab front protective net welding tool, which relates to the technical field of excavator cab front protective net welding auxiliary tools and comprises a base, a positioning frame and an angle adjusting mechanism, the positioning frame is hinged to the top of the base, and an excavator cab front protective net body is placed on the positioning frame. Four pieces of limiting round steel distributed in a rectangular array are welded to the positioning frame, and two locking assemblies are symmetrically arranged on the positioning frame. According to the front protective net, the front protective net body of the excavator cab is limited through the four pieces of limiting round steel and locked through the two locking assemblies, the rapid clamping effect can be achieved, and the working efficiency can be improved; through the arrangement of the angle adjusting mechanism, the inclination angle of the positioning frame can be flexibly adjusted, and then the welding angle of the excavator cab front protective net body on the positioning frame can be flexibly adjusted, so that diversified welding requirements can be met.

Description

A welding fixture for the front guardrail of an excavator cab Technical Field

[0001] This utility model relates to the technical field of welding auxiliary tools for the front guardrail of excavator cab, and in particular to a welding fixture for the front guardrail of excavator cab. Background Technology

[0002] Welding fixtures are a set of flexible clamps for welding, fixing, clamping, and positioning. Currently, welding fixtures are needed for limiting the welding process of the front guardrail of the excavator cab to ensure welding quality.

[0003] However, existing welding fixtures cannot achieve rapid clamping in actual operation, resulting in low work efficiency. At the same time, existing welding fixtures are not convenient for flexibly adjusting the welding angle of the workpiece, thus failing to meet diverse welding needs. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this utility model provides a welding fixture for the front guardrail of an excavator cab. This fixture effectively solves the problems that existing welding fixtures cannot achieve rapid clamping in actual operation, resulting in low work efficiency. Furthermore, existing welding fixtures are not convenient for flexibly adjusting the welding angle of the workpiece, thus failing to meet diverse welding needs.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A welding fixture for the front guardrail of an excavator cab includes a base, a positioning frame hinged to the top of the base, and an angle adjustment mechanism, wherein the front guardrail body of the excavator cab is placed on the positioning frame.

[0007] The positioning frame is welded with four rectangular array of limiting round steel bars, and two locking components are symmetrically arranged on the positioning frame. Each of the two locking components includes a U-shaped bracket welded to the side wall of the positioning frame, a locking screw threaded to the U-shaped bracket, and a locking disc concentrically welded to the outer wall of one end of the locking screw.

[0008] By adopting the above technical solution, which uses four limiting round steels for positioning and two locking components for locking, a quick clamping effect can be achieved, which is beneficial to improving work efficiency.

[0009] Preferably, a hand-turning block is welded to the ends of the two locking screws that are far apart from each other, and clearance holes are provided on both sides of the positioning frame, with the two locking screws passing through the two clearance holes in sequence.

[0010] Preferably, the angle adjustment mechanism includes a slide groove opened at the middle of the top of the base, an adjustment screw rotatably installed in the slide groove, a motor bracket welded to the side wall of the base, a servo motor fixed to the side wall of the motor bracket by bolts, an H-type hinge frame, and a T-type adjustment rod threaded to the adjustment screw.

[0011] By adopting the above technical solution, the tilt angle of the positioning frame can be flexibly adjusted, which in turn allows for flexible adjustment of the welding angle of the excavator cab front guardrail body on the positioning frame, thereby meeting diverse welding requirements.

[0012] Preferably, the bottom end of the H-shaped hinge frame is hinged to the top of the T-shaped adjusting rod, and the top end of the H-shaped hinge frame is hinged to the bottom of the positioning frame.

[0013] Preferably, the outer wall of the T-shaped adjusting rod is slidably connected to the inner wall of the slide groove, which ensures that the T-shaped adjusting rod can perform horizontal linear movement.

[0014] Preferably, the output shaft of the servo motor passes through the motor bracket and is coaxially fixedly connected to one end of the adjusting screw via a coupling, which can ensure that the servo motor controls the coaxial rotation of the adjusting screw.

[0015] The beneficial effects of this utility model are as follows:

[0016] 1. This utility model uses four limiting round steel bars to limit the front guard net body of the excavator cab and two locking components to lock it, which can achieve a quick clamping effect and improve work efficiency.

[0017] 2. This utility model, through the setting of the angle adjustment mechanism, can flexibly adjust the tilt angle of the positioning frame, and thus flexibly adjust the welding angle of the excavator cab front guard net body on the positioning frame, thereby meeting diverse welding needs. Attached Figure Description

[0018] Figure 1 is a schematic diagram of the overall three-dimensional structure of a welding fixture for the front guard net of an excavator cab proposed in this utility model.

[0019] Figure 2 is a partial three-dimensional structural schematic diagram of a welding fixture for the front guard net of an excavator cab proposed in this utility model.

[0020] Figure 3 is a three-dimensional enlarged structural schematic diagram of the locking component in the welding fixture for the front guard net of an excavator cab proposed in this utility model;

[0021] Figure 4 is a three-dimensional structural diagram of the angle adjustment mechanism in the welding fixture for the front guardrail of an excavator cab proposed in this utility model.

[0022] In the diagram: 1. Base; 2. Positioning frame; 3. Excavator cab front guard net body; 4. Limiting round steel; 5. U-shaped bracket; 6. Locking screw; 7. Locking disc; 8. Hand-operated block; 9. Slide groove; 10. Adjusting screw; 11. Motor bracket; 12. Servo motor; 13. T-shaped adjusting rod; 14. H-shaped hinge frame. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0024] Example 1, referring to Figures 1-3, a welding fixture for the front guardrail of an excavator cab includes a base 1 and a positioning frame 2 hinged to the top of the base 1;

[0025] Furthermore, the front guard net body 3 of the excavator cab is placed on the positioning frame 2, and four rectangular array of limiting round steel bars 4 are welded on the positioning frame 2. Two locking components are symmetrically arranged on the positioning frame 2.

[0026] Furthermore, both locking components include a U-shaped bracket 5 welded to the side wall of the positioning frame 2, a locking screw 6 threaded to the U-shaped bracket 5, and a locking disc 7 concentrically welded to the outer wall of one end of the locking screw 6.

[0027] Furthermore, a hand-turning block 8 is welded to the ends of the two locking screws 6 that are far apart from each other, and clearance holes are provided on both sides of the positioning bracket 2, with the two locking screws 6 passing through the two clearance holes in sequence.

[0028] In this embodiment, the front guardrail body 3 of the excavator cab is limited by four limiting round steel bars 4. The two locking screws 6 are rotated in sequence by two hand-operated blocks 8 to move the two locking discs 7 forward and lock the two front guardrail bodies 3 of the excavator cab in sequence. This can achieve the effect of quick clamping and improve the efficiency of operation.

[0029] Example 2, referring to Figures 1 and 4, is an optimization based on Example 1. Specifically, it includes a welding fixture for the front guardrail of an excavator cab, further comprising an angle adjustment mechanism, which includes:

[0030] Slide groove 9 and adjusting screw 10: Slide groove 9 is opened at the top center of base 1, and adjusting screw 10 is rotatably installed in slide groove 9;

[0031] Motor bracket 11 and servo motor 12: Motor bracket 11 is welded to the side wall of base 1, and servo motor 12 is fixed to the side wall of motor bracket 11 by bolts. The output shaft of servo motor 12 passes through motor bracket 11 and is coaxially fixedly connected to one end of adjusting screw 10 through coupling.

[0032] H-type hinge frame 14: The bottom end of the H-type hinge frame 14 is hinged to the top of the T-type adjusting rod 13, and the top end of the H-type hinge frame 14 is hinged to the bottom of the positioning frame 2.

[0033] T-shaped adjusting rod 13: The T-shaped adjusting rod 13 is threadedly connected to the adjusting screw 10, and the outer wall of the T-shaped adjusting rod 13 is slidably connected to the inner wall of the slide groove 9;

[0034] In this specific embodiment: the servo motor 12 drives the adjusting screw 10 to rotate, and then, under the limit of the slide groove 9, the T-shaped adjusting rod 13, which is threadedly connected to the adjusting screw 10, will slide in the slide groove 9. As the T-shaped adjusting rod 13 slides continuously, the H-shaped hinge frame 14, which is hinged, will also move continuously. Ultimately, the tilt angle of the positioning frame 2 can be flexibly adjusted, and the welding angle of the excavator cab front guard net body 3 on the positioning frame 2 can be flexibly adjusted, thereby meeting diverse welding requirements.

[0035] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A welding fixture for the front guardrail of an excavator cab, comprising a base (1) and a positioning frame (2) hinged to the top of the base (1), wherein the front guardrail body (3) of the excavator cab is placed on the positioning frame (2), characterized in that, It also includes an angle adjustment mechanism; four rectangular array of limiting round steel (4) are welded on the positioning frame (2), and two locking components are symmetrically arranged on the positioning frame (2). Each of the two locking components includes a U-shaped bracket (5) welded to the side wall of the positioning frame (2), a locking screw (6) threaded to the U-shaped bracket (5), and a locking disc (7) concentrically welded to the outer wall of one end of the locking screw (6).

2. The welding fixture for the front guardrail of an excavator cab according to claim 1, characterized in that, Both locking screws (6) have hand-turning blocks (8) welded to their ends that are far apart from each other. Both sides of the positioning frame (2) have clearance holes, and the two locking screws (6) pass through the two clearance holes in sequence.

3. The welding fixture for the front guardrail of an excavator cab according to claim 1, characterized in that, The angle adjustment mechanism includes a slide groove (9) located at the top center of the base (1), an adjusting screw (10) rotatably installed in the slide groove (9), a motor bracket (11) welded to the side wall of the base (1), a servo motor (12) fixed to the side wall of the motor bracket (11) by bolts, an H-type hinge frame (14), and a T-type adjusting rod (13) threadedly connected to the adjusting screw (10).

4. The welding fixture for the front guardrail of an excavator cab according to claim 3, characterized in that, The bottom end of the H-shaped hinge frame (14) is hinged to the top of the T-shaped adjusting rod (13), and the top end of the H-shaped hinge frame (14) is hinged to the bottom of the positioning frame (2).

5. The welding fixture for the front guardrail of an excavator cab according to claim 3, characterized in that, The outer wall of the T-shaped adjusting rod (13) is slidably connected to the inner wall of the slide groove (9).

6. The welding fixture for the front guardrail of an excavator cab according to claim 3, characterized in that, The output shaft of the servo motor (12) passes through the motor bracket (11) and is coaxially fixedly connected to one end of the adjusting screw (10) via a coupling.

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