Excavator frame production welding equipment

Abstract

The utility model relates to the technical field of excavator frame production, and discloses excavator frame production welding equipment which comprises a welding table, a motor is fixedly connected to the front surface of the welding table, a threaded rod is fixedly connected to the output end of the motor, and threaded blocks are in threaded connection with the positions, located on the front side and the rear side of the interior of the welding table, of the outer surface of the threaded rod. The upper end of the threaded block is fixedly connected with a supporting seat; a plurality of rolling rods I are uniformly embedded into and rotationally connected to the upper surface of the supporting seat from left to right, and an adjusting mechanism is jointly arranged in the supporting seat and on the upper surface of the supporting seat; according to the utility model, the flexibility and precision of workpiece positioning before welding are obviously improved; the adjusting mechanism controls lifting switching of the second rolling rod through the telescopic driving component, so that the frame is adjusted step by step in the front-back direction and the left-right direction, the second rolling rod supports the frame to complete front-back alignment when lifted, the first rolling rod bears and guides left-right calibration after reset, and due to the alternate action of the two rolling rods, interference of multi-direction adjustment is avoided, and manual pushing resistance is reduced.

Description

Technical Field

[0001] This utility model relates to the field of excavator frame production technology, specifically to a welding equipment for excavator frame production. Background Technology

[0002] Excavators are common construction machines widely used in building, road, and mining projects, primarily for digging operations. Excavators are widely used in harsh working environments and are subjected to complex forces. They mainly consist of several major parts, including the upper and lower frames, working device, hydraulic system, electrical system, and cab.

[0003] An existing patent (publication number CN211248930U) discloses a welding fixture for an excavator underframe, including a base, an adjustment mechanism, and a positioning mechanism; the adjustment mechanism is provided above the base, and the positioning mechanism is provided above the adjustment mechanism; the adjustment mechanism includes a first support platform and a second support platform; the surface of the base is respectively provided with an upper sliding groove and a lower sliding groove, which are laterally distributed;

[0004] In the process of realizing this solution, the inventors discovered the following problems in the existing technology that have not been well resolved: the device cannot adjust the height of the underframe according to the height of the operator, making welding operations inconvenient. At the same time, the device cannot clamp and fix the underframe, and the position of the underframe is prone to move during the welding process, which will cause the welding position to change and affect the welding quality of the underframe.

[0005] Chinese patent discloses a welding fixture for excavator frames (authorization announcement number CN220145095U). In use, the user adjusts the first and second support platforms according to different excavator underframes. A controller operates a dual-axis servo motor. The output of the servo motor rotates, driving a connecting rod and a worm gear on the connecting rod. The worm gear rotates, driving a meshing worm wheel, which in turn rotates a ball screw. The ball screw then moves a slider on its moving end, causing the first and second support platforms to move in opposite directions. This allows the excavator underframe to be adjusted. The machine is placed on the first and second support platforms. The second hydraulic cylinder moves upward to push the L-shaped mounting plate to the appropriate position. Then, the third hydraulic cylinder moves the clamping plate on the third hydraulic cylinder to hold the excavator's underframe, preventing the underframe from sliding or falling and ensuring stability and safety during welding. The first hydraulic cylinder is then controlled to adjust the underframe to a position suitable for the height of the operator, making it easier for operators of different heights to weld. It also facilitates welding at different positions on the underframe, greatly improving welding comfort and work efficiency.

[0006] However, it has certain drawbacks: its support platform surface lacks a rolling guide structure, and after the frame is placed, it relies solely on manual pushing for rough positioning. Especially when adjusting the horizontal position, the sliding friction resistance between the frame and the support platform is large, which not only consumes physical strength but also makes it difficult to achieve precise fine-tuning, easily leading to alignment deviation. Utility Model Content

[0007] The purpose of this utility model is to provide a welding equipment for the production of excavator frames to solve the problems mentioned in the background art.

[0008] To achieve the above objectives, this utility model provides the following technical solution:

[0009] A welding equipment for excavator frame production includes a welding table, a base installed below the welding table, telescopic cylinders fixedly connected to the four corners of the upper surface of the base, a motor fixedly connected to the front surface of the welding table, a threaded rod fixedly connected to the output end of the motor, threaded blocks threadedly connected to the outer surface of the threaded rod on both the front and rear sides inside the welding table, a support seat fixedly connected to the upper end of the threaded block, and clamping mechanisms provided on the front surface of the front support seat and the rear surface of the rear support seat.

[0010] The upper surface of the support base is uniformly embedded with multiple rollers from left to right, and an adjustment mechanism is provided both inside the support base and on its upper surface.

[0011] As a further embodiment of this utility model: the clamping mechanism includes a support sleeve, a telescopic cylinder two is fixedly connected inside the support sleeve, a support plate is fixedly connected to the telescopic end of the telescopic cylinder two, a telescopic cylinder three is fixedly connected to the side surface of the support plate away from the support seat, and a clamping plate is fixedly connected to the telescopic end of the telescopic cylinder three.

[0012] As a further embodiment of this utility model: the adjustment mechanism includes a connecting plate, and multiple connecting blocks are uniformly fixed to the upper surface of the connecting plate from left to right. Multiple rollers are uniformly embedded and rotatably connected to the upper surface of the connecting blocks from front to back. Telescopic cylinders are fixed to the four corners of the lower surface of the connecting plate.

[0013] As a further embodiment of this utility model: the telescopic end of the telescopic cylinder is fixedly connected to the lower surface of the welding table, the rear end of the threaded rod is rotatably connected to the inner rear surface of the welding table, and the threaded block is slidably connected to the upper surface of the welding table.

[0014] As a further improvement of this utility model, the support sleeve is fixedly connected to one side surface of the support base.

[0015] As a further embodiment of this utility model: the connecting plate is located inside the support base, the connecting block movably penetrates the upper surface of the support base, and the connecting block is located between two adjacent rollers, and the telescopic cylinder is fixedly connected to the lower inner surface of the support base.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] This invention significantly improves the flexibility and accuracy of workpiece positioning before welding through the coordinated design of roller one and the adjustment mechanism. The rolling structure of roller one facilitates smooth movement of the excavator frame in the left and right directions, enabling rapid horizontal fine-tuning. The adjustment mechanism controls the lifting and lowering of roller two through a telescopic drive component, allowing the frame to be adjusted step by step in the front-back and left-right directions. When roller two is raised, it supports the frame to complete the front-back alignment. After resetting, roller one takes over and guides the left-right calibration. The alternating action of the two rollers avoids interference in multi-directional adjustments and reduces manual pushing resistance. This design simplifies the operation process through mechanical linkage, greatly improving adjustment efficiency while ensuring positioning accuracy, and providing a stable and reliable workpiece fixing foundation for welding operations. Attached Figure Description

[0018] Figure 1 A schematic diagram of a welding equipment for producing excavator frames;

[0019] Figure 2 This is a schematic diagram of a clamping mechanism in a welding equipment for excavator frame production.

[0020] Figure 3 for Figure 1 Enlarged view of A in the middle;

[0021] Figure 4 This is a schematic diagram of the adjustment mechanism in a welding equipment for excavator frame production.

[0022] Figure 5 This is a schematic diagram of the frame positioning for a welding equipment used in the production of excavator frames.

[0023] In the diagram: 1. Welding table; 2. Base; 3. Telescopic cylinder one; 4. Motor; 5. Threaded rod; 6. Threaded block; 7. Support seat; 8. Clamping mechanism; 9. Support sleeve; 10. Telescopic cylinder two; 11. Support plate; 12. Telescopic cylinder three; 13. Clamping plate; 14. Roller one; 15. Adjustment mechanism; 16. Connecting plate; 17. Connecting block; 18. Roller two; 19. Telescopic cylinder four; 20. Excavator frame. Detailed Implementation

[0024] Please see Figure 1 and Figure 2In this embodiment of the present invention, a welding device for excavator frame production includes a welding table 1. A base 2 is installed below the welding table 1. Telescopic cylinders 3 are fixedly connected to the four corners of the upper surface of the base 2. The telescopic ends of the telescopic cylinders 3 are fixedly connected to the lower surface of the welding table 1. A motor 4 is fixedly connected to the front surface of the welding table 1. A threaded rod 5 is fixedly connected to the output end of the motor 4. The rear end of the threaded rod 5 is rotatably connected to the inner rear surface of the welding table 1. Threaded blocks 6 are threadedly connected to the outer surface of the threaded rod 5 on both the front and rear sides of the inner surface of the welding table 1. Block 6 is slidably connected to the upper surface of welding table 1. The upper end of threaded block 6 is fixedly connected to support seat 7. The front surface of front support seat 7 and the rear surface of rear support seat 7 are both provided with clamping mechanism 8. Clamping mechanism 8 includes support sleeve 9. Support sleeve 9 is fixedly connected to one side surface of support seat 7. Telescopic cylinder 2 10 is fixedly connected inside support sleeve 9. Support plate 11 is fixedly connected to the telescopic end of telescopic cylinder 2 10. Telescopic cylinder 3 12 is fixedly connected to the side surface of support plate 11 away from support seat 7. Clamping plate 13 is fixedly connected to the telescopic end of telescopic cylinder 3 12.

[0025] Telescopic cylinder 1 (3), telescopic cylinder 2 (10), and telescopic cylinder 3 (12) are preferably hydraulic cylinders or electric cylinders;

[0026] Telescopic cylinder 3 is used to drive the welding table 1 to rise and fall, thereby adjusting the height of the excavator frame 20, making it easier for workers of different heights to weld on it;

[0027] The excavator frame 20 is hoisted onto the upper surface of the two support seats 7 using hoisting equipment;

[0028] Each clamping mechanism 8 has two telescopic cylinders 10 and 12, which are arranged symmetrically. The telescopic cylinder 10 is used to drive the support plate 11 to rise and fall, thereby adjusting the clamping height. The telescopic cylinder 12 is used to drive the clamping plate 13 to move towards the excavator frame 20, thereby clamping the excavator frame 20.

[0029] The threads of the two threaded blocks 6 are opposite, that is, when the threaded rod 5 rotates, the two threaded blocks 6 will move relative to each other or away from each other, thereby adjusting the distance between the two support seats 7, which makes it easier to place excavator frames 20 of different sizes and specifications.

[0030] The rear end of the threaded rod 5 can be rotatably connected to the inner rear surface of the welding table 1 via a bearing.

[0031] exist Figure 1 , Figure 3 and Figure 4In the middle: Multiple rollers 14 are evenly embedded and rotatably connected on the upper surface of the support base 7 from left to right. An adjustment mechanism 15 is provided both inside and on the upper surface of the support base 7. The adjustment mechanism 15 includes a connecting plate 16, which is located inside the support base 7. Multiple connecting blocks 17 are evenly fixed on the upper surface of the connecting plate 16 from left to right. The connecting blocks 17 movably penetrate the upper surface of the support base 7 and are located between two adjacent rollers 14. Multiple rollers 28 are evenly embedded and rotatably connected on the upper surface of the connecting blocks 17 from front to back. Telescopic cylinders 49 are fixed at the four corners of the lower surface of the connecting plate 16. The telescopic cylinders 49 are fixed to the lower surface of the inner part of the support base 7.

[0032] The telescopic cylinder 19 is preferably a hydraulic cylinder or an electric cylinder, with its telescopic end fixed to the lower surface of the connecting plate 16 and the end away from the telescopic end fixed to the inner lower surface of the support base 7.

[0033] The telescopic cylinder 4 19 is initially in the retracted state. At this time, the upper surface of the roller 2 18 is lower than the upper surface of the roller 14. After the telescopic cylinder 4 19 is extended, the upper surface of the roller 2 18 is higher than the upper surface of the roller 14.

[0034] Roller 14 facilitates the left and right movement of the excavator frame 20, and roller 28 facilitates the front and back movement of the excavator frame 20, thereby facilitating fine-tuning of the excavator frame 20 placed on the support 7 in the left, right, front and back directions.

[0035] In actual operation, the telescopic cylinder 419 needs to extend first so that the roller 218 fits against the excavator frame 20. The excavator frame 20 is adjusted in the front-to-back direction first, and then adjusted in the left-to-right direction later.

[0036] The working principle of this utility model is as follows: First, the height of the welding table 1 is adjusted by the telescopic cylinder 3 to meet the operating needs of the operator; then, the motor 4 is started to drive the threaded rod 5 to rotate, so that the threaded blocks 6 with two opposite threads drive the support seat 7 to adjust the distance to match the size of the excavator frame 20 to be welded; after the excavator frame 20 is hoisted to the support seat 7, it is first positioned by the adjustment mechanism 15: the telescopic cylinder 4 19 extends to raise the connecting plate 16, so that the roller 2 18 is higher than the roller 14, and the excavator frame 20 is manually pushed along the roller 2 14. 8. Make fine adjustments in the front and back directions; after retracting the telescopic cylinder 4 19, the excavator frame 20 falls back onto the roller 1 14. At this time, fine adjustments can be made in the left and right directions along the roller 1 14. After the position adjustment is completed, the clamping mechanism 8 is activated: the telescopic cylinder 2 10 adjusts the support plate 11 to the clamping height on the side of the excavator frame 20, and the telescopic cylinder 3 12 drives the clamping plate 13 to move towards the excavator frame 20 to complete the clamping and fixing, and finally achieve precise positioning welding. The whole process ensures the stability of the excavator frame 20 during welding through multi-level adjustment and clamping coordination.

[0037] 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.

[0038] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

Claims

1. A welding equipment for excavator frame production, comprising a welding table (1), a base (2) installed below the welding table (1), telescopic cylinders (3) fixedly connected to the four corners of the upper surface of the base (2), a motor (4) fixedly connected to the front surface of the welding table (1), a threaded rod (5) fixedly connected to the output end of the motor (4), threaded blocks (6) threadedly connected to the outer surface of the threaded rod (5) on both the front and rear sides inside the welding table (1), a support seat (7) fixedly connected to the upper end of the threaded block (6), and a clamping mechanism (8) provided on the front surface of the front support seat (7) and the rear surface of the rear support seat (7); Its features are, The upper surface of the support base (7) is uniformly embedded with multiple rollers (14) from left to right, and the interior and upper surface of the support base (7) are provided with an adjustment mechanism (15).

2. The excavator frame production welding equipment according to claim 1, characterized in that, The clamping mechanism (8) includes a support sleeve (9), inside which a telescopic cylinder two (10) is fixedly connected, and a support plate (11) is fixedly connected to the telescopic end of the telescopic cylinder two (10). A telescopic cylinder three (12) is fixedly connected to the side surface of the support plate (11) away from the support seat (7), and a clamping plate (13) is fixedly connected to the telescopic end of the telescopic cylinder three (12).

3. The excavator frame production welding equipment according to claim 1, characterized in that, The adjustment mechanism (15) includes a connecting plate (16). Multiple connecting blocks (17) are evenly fixed to the upper surface of the connecting plate (16) from left to right. Multiple rollers (18) are evenly embedded and rotatably connected to the upper surface of the connecting blocks (17) from front to back. Telescopic cylinders (19) are fixed to the four corners of the lower surface of the connecting plate (16).

4. The excavator frame production welding equipment according to claim 1, characterized in that, The telescopic end of the telescopic cylinder (3) is fixed to the lower surface of the welding table (1), the rear end of the threaded rod (5) is rotatably connected to the inner rear surface of the welding table (1), and the threaded block (6) is slidably connected to the upper surface of the welding table (1).

5. The excavator frame production welding equipment according to claim 2, characterized in that, The support sleeve (9) is fixed to one side surface of the support base (7).

6. The excavator frame production welding equipment according to claim 3, characterized in that, The connecting plate (16) is located inside the support base (7), the connecting block (17) moves through the upper surface of the support base (7), and the connecting block (17) is located between two adjacent rollers (14). The telescopic cylinder (19) is fixed to the lower inner surface of the support base (7).

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