Welding device for lower frame of excavator

Abstract

The utility model provides a welding device for a lower frame of an excavator, which belongs to the technical field of mechanical engineering and comprises a bearing mechanism, an operating table, universal locking wheels fixedly mounted at the bottom of the operating table and a push handle fixedly mounted on the outer surface of the operating table. The driving mechanism comprises a first air cylinder adaptively installed on the top of the operation table, a fixing column arranged on the outer surface of the output end of the first air cylinder in a sleeving mode, a fixing sleeve fixedly installed on the end face of the first air cylinder, an inner supporting assembly used in cooperation with the first air cylinder when the first air cylinder stretches out and draws back, and an adjusting assembly used in cooperation with the inner supporting assembly. Through mutual cooperation of the bearing mechanism and the driving mechanism, not only is the problem that manual adjustment is difficult and time-consuming effectively solved, but also accurate support and adjustment are provided particularly for components (such as tires, chain wheels, idler wheels and idle wheels) with circular inner diameters, stable and flexible positioning is achieved, and the production efficiency is improved. The difficulty of manual operation is reduced, and the adjustment precision is improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to mechanical engineering technical field, concretely relates to excavator lower frame welding device. BACKGROUND

[0002] The lower frame of the excavator, also known as the chassis or undercarriage, is an important component of the excavator, mainly serving to support the entire machine and allowing the excavator to move on different terrains. The lower frame usually includes tracks or tires, sprockets, rollers, idlers, and final drive components, which work together to provide mobility. For the lower frame in the welding device, it needs to be manufactured through assembly, welding, and processing procedures to ensure that each part meets the standard requirements during the manufacturing process of the excavator.

[0003] The document with publication number CN221435466U proposes an excavator frame production welding equipment, which includes a mounting seat, a support block is arranged at the top middle of the mounting seat, an installation plate is arranged at the top of the support block, support bars are arranged at the top of the mounting seat on both sides of the support block, and fixed plates are arranged at the top of the two support bars. The support block and the support bar are inserted and installed on the mounting seat, and the distance between the support block and the support bar is adjusted through the position of the excavator intermediate frame and the track beam. The excavator intermediate frame and the track beam are fixed through the groove of the fixed plate and the protrusion of the installation plate, and the placement angle of the intermediate frame is adjusted through the rotating rod of the installation plate, so that the edge of the intermediate frame is aligned with the track beam, the track beam and the intermediate frame are accurately connected, and the welding effect is guaranteed.

[0004] However, in actual application, although the comparative document can adjust the distance between components, it is difficult and time-consuming to manually adjust due to the heavy weight of these components (such as tires, sprockets, rollers, idlers, etc.), which increases the workload of operators and may result in insufficient adjustment accuracy. In addition, these components (such as tires, sprockets, rollers, idlers, etc.) are usually circular in structure and can be supported and adjusted by a specially designed internal support device, which can effectively reduce the dependence on manual operation, thereby reducing the work intensity and improving the adjustment accuracy. UTILITY MODEL CONTENTS

[0005] The utility model aims to provide a kind of excavator lower frame welding device, to solve the problems proposed in the above background technique.

[0006] To achieve the above purpose, the utility model provides the following technical scheme:

[0007] An excavator lower frame welding device includes

[0008] The bearing mechanism comprises an operation table, a universal locking wheel fixedly installed at the bottom of the operation table, a push handle fixedly installed on the outer surface of the operation table, a counterweight fixedly installed on the outer surface of the operation table, and a first fixed block fixedly installed on the outer surface of the operation table.

[0009] The driving mechanism comprises a first cylinder fixedly installed at the top of the operation table, a fixed column sleeved on the outer surface of the output end of the first cylinder, a fixed sleeve fixedly installed at the end surface of the first cylinder, an inner support assembly used in cooperation with the first cylinder in extension and retraction, and an adjusting assembly used in cooperation with the inner support assembly.

[0010] As a preferred scheme of the utility model, the inner surface of the first cylinder is rotatably connected with the outer surface of the first fixed block, and a bearing sleeve used in cooperation with rotation is installed at the connection position.

[0011] As a preferred scheme of the utility model, the inner surface of the first cylinder is rotatably connected with the outer surface of the first fixed block, and a bearing sleeve used in cooperation with rotation is installed at the connection position.

[0012] As a preferred scheme of the utility model, the fixed sleeve is provided with a bearing sleeve used in cooperation at the connection position with the first guide rod, and the first guide rod is provided with a bearing sleeve used in cooperation with rotation at the connection position with the arc-shaped clamping plate.

[0013] As a preferred scheme of the utility model, the fixed sleeve is provided with a bearing sleeve used in cooperation at the connection position with the first guide rod, and the first guide rod is provided with a bearing sleeve used in cooperation with rotation at the connection position with the arc-shaped clamping plate.

[0014] As a preferred scheme of the utility model, the fixed sleeve is provided with a bearing sleeve used in cooperation at the connection position with the first guide rod, and the first guide rod is provided with a bearing sleeve used in cooperation with rotation at the connection position with the arc-shaped clamping plate.

[0015] As a preferred scheme of the utility model, the fixed sleeve is provided with a bearing sleeve used in cooperation at the connection position with the first guide rod, and the first guide rod is provided with a bearing sleeve used in cooperation with rotation at the connection position with the arc-shaped clamping plate.

[0016] Compared with the prior art, the beneficial effects of the utility model are: through the mutual cooperation of the bearing mechanism and the driving mechanism, not only the problems of manual adjustment difficulty and time consumption are effectively solved, but also accurate support and adjustment are provided for these components with circular inner diameter (such as tires, chain wheels, rollers, idlers, etc.), stable and flexible positioning is realized, the difficulty of manual operation is reduced, and the adjustment accuracy is improved. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical scheme of the embodiments of the utility model, the drawings needed to be used in the embodiment description will be briefly introduced, and obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can be obtained according to these drawings without creative labor, wherein:

[0018] Fig. 1 It is the overall structure schematic diagram of the utility model;

[0019] Fig. 2 It is another view schematic diagram of the overall structure of the utility model;

[0020] Fig. 3 It is the side view schematic diagram of the overall structure of the utility model;

[0021] Fig. 4 It is the structure schematic diagram of the inner support assembly and the adjusting assembly of the utility model.

[0022] In the drawing: 100, bearing mechanism;101, operation table;102, universal locking wheel;103, push handle;104, counterweight;105, first fixed block;200, driving mechanism;201, first cylinder;202, fixed column;203, fixed sleeve;204, inner support assembly;204a, first guide rod;204b, limit block;204c, second guide rod;204d, arc-shaped clamping plate;205, adjusting assembly;205a, second fixed block;205b, second cylinder;205c, positioning block. DETAILED DESCRIPTION

[0023] In order to make the above-mentioned purpose, features and advantages of the utility model more obvious and easy to understand, the specific implementation of the utility model will be described in detail in conjunction with the drawings of the specification.

[0024] In the following description, many specific details are set forth in order to provide a thorough understanding of the utility model, but the utility model can also be implemented in other ways different from the description herein, and those skilled in the art can make similar generalization without departing from the connotation of the utility model, therefore, the utility model is not limited by the specific embodiments disclosed below.

[0025] Secondly, the "one embodiment" or "embodiment" referred to herein means that a specific feature, structure, or characteristic described can be included in at least one implementation of the present application. The "in one embodiment" appearing in different places in the specification does not mean the same embodiment, nor is it an embodiment that is independent or alternative to other embodiments.

[0026] Embodiment

[0027] Reference Figs. 1-4 For the embodiment of the present application, the embodiment provides a lower frame welding device of excavator, comprising,

[0028] The bearing mechanism 100 comprises an operation table 101, a universal locking wheel 102 fixedly installed at the bottom of the operation table 101, a push handle 103 fixedly installed on the outer surface of the operation table 101, a counterweight 104 fixedly installed on the outer surface of the operation table 101, and a first fixed block 105 fixedly installed on the outer surface of the operation table 101.

[0029] The driving mechanism 200 comprises a first air cylinder 201 adaptively installed at the top of the operation table 101, a fixed column 202 sleeved on the outer surface of the output end of the first air cylinder 201, a fixed sleeve 203 fixedly installed at the end face of the first air cylinder 201, an inner support assembly 204 used in cooperation with the extension and retraction of the first air cylinder 201, and an adjusting assembly 205 used in cooperation with the inner support assembly 204.

[0030] Among them, through the counterweight 104, the weight distribution of the whole welding device can be increased, so that when heavy components such as tires, chain wheels, rollers, idlers are handled, the position deviation caused by vibration or imbalance during operation can be effectively reduced.

[0031] Specifically, the inner surface of the first air cylinder 201 is rotatably connected with the outer surface of the first fixed block 105, and a bearing sleeve used in cooperation with rotation is installed at the connection position.

[0032] Further, the inner support assembly 204 comprises a first guide rod 204a rotatably connected to the inner surface of the fixed sleeve 203, a plurality of limiting blocks 204b fixedly installed on the outer surface of the fixed column 202, a second guide rod 204c rotatably connected to the inner surface of the limiting block 204b, and an arc-shaped clamping plate 204d rotatably connected to the inner surface of the other end of the first guide rod 204a and the second guide rod 204c.

[0033] Among them, the rotatable connection of the first air cylinder 201 and the first fixed block 105 can make the first air cylinder 201 realize linear motion, facilitate the angle adjustment of the welding assembly, improve the adaptability to components of different shapes and sizes, and also ensure the flexibility and accuracy during accurate adjustment.

[0034] Further, a bearing sleeve is installed at the connection between the fixed sleeve 203 and the first guide rod 204a, and a bearing sleeve for rotation is installed at the connection between the first guide rod 204a and the arc-shaped clamping plate 204d.

[0035] Further, a bearing sleeve for rotation is installed at the connection between the limiting block 204b and the second guide rod 204c, and a bearing sleeve for rotation is installed at the connection between the second guide rod 204c and the arc-shaped clamping plate 204d.

[0036] Preferably, the adjusting assembly 205 includes a second fixed block 205a fixedly installed on the outer surface of the operating table 101, a second cylinder 205b rotationally connected to the outer surface of the second fixed block 205a, and a positioning block 205c fixedly installed on the outer surface of the fixed column 202.

[0037] It should be noted that a bearing sleeve for rotation is installed at the connection between the second fixed block 205a and the positioning block 205c, and the output end of the second cylinder 205b is rotationally connected to the inner surface of the positioning block 205c, and a bearing sleeve for rotation is installed at the connection.

[0038] The first cylinder 201 and the second cylinder 205b included in the driving mechanism 200 can support and adjust the assembly, and the arc-shaped clamping plate 204d can precisely support the circular structure assembly, ensuring that each assembly can be accurately placed at the desired position, reducing the workload of manual adjustment, and improving work efficiency.

[0039] In use, first move the assembly to be welded to the desired position by the universal locking wheel 102 through the push handle 103, and align the arc-shaped clamping plate 204d with the inner diameter of the assembly, start the first cylinder 201, drive the fixed sleeve 203 to move linearly through its telescopic action, the first guide rod 204a and the second guide rod 204c are guided by the fixed sleeve 203 and the limiting block 204b, and drive the arc-shaped clamping plate 204d to support the assembly, move the fixed assembly to the frame to be welded, and adjust the position of the assembly by adjusting the second cylinder 205b in the adjusting assembly 205 to fine-tune the positioning block 205c on the fixed column 202, further optimize the position of the assembly, and ensure that each assembly can be accurately placed at its predetermined position.

[0040] In summary, through the cooperation of the bearing mechanism 100 and the driving mechanism 200, not only the problem of manual adjustment difficulty and time-consuming is effectively solved, but also accurate support and adjustment are provided for these assemblies with circular inner diameter such as tires, chain wheels, rollers, idlers, etc., stable and flexible positioning is achieved, the difficulty of manual operation is reduced, and the adjustment accuracy is improved.

[0041] It is important to note that the construction and arrangements of the application shown in the various exemplary embodiments are illustrative only. Although only a few embodiments have been described in detail in this disclosure, those skilled in the art who review this disclosure will readily appreciate that many modifications can be made to the embodiments without departing from the novel teachings and advantages of the subject matter described herein. For example, elements described as integrated in a single unit can be separated, elements described as separate can be integrated, and the position, number, shape, and arrangements of elements can be varied. Accordingly, all such modifications are intended to be included within the scope of the present inventive subject matter. The order or sequence of any process or method steps can be varied or re-sequenced without departing from the general nature of the claims. Any "means plus function" clauses are intended to cover the structures described herein as performing the recited functionality and not only structural equivalents but also equivalent structures. Other substitutions, modifications, changes, and omissions can be made in the design, operating conditions, and arrangement of the exemplary embodiments without departing from the scope of the present inventive subject matter. Accordingly, the present inventive subject matter is not limited to the particular embodiments described and illustrated herein, but extends to equivalents of which the foregoing describes are intended to cover.

[0042] Furthermore, in order to provide a concise description of the exemplary embodiments, not all features of an actual implementation can be described (i.e., those related to the

[0043] It is understood that in the development of any actual implementation, as in any engineering or design project, numerous implementation-specific decisions can be made. Such development efforts can inevitably lead to modifications, which can be different from those suggested herein, and still fall within the scope of the inventive subject matter. Those skilled in the art will appreciate that the development of any such modifications to the inventive subject matter that nevertheless fall within the scope of the inventive subject matter will be predicated on the

[0044] It should be noted that the above-mentioned embodiments are only used to illustrate the technical solutions of the present application but not to limit the present application, and although the present application is described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present application can be modified or equivalent replaced without departing from the spirit and scope of the present application, and all should be included in the scope of the claims of the present application.

Claims

1. An excavator lower frame welding apparatus characterized by: The utility model relates to a bearing mechanism (100) and drive mechanism (200) for a portable platform (101), which comprises a universal locking wheel (102) fixedly installed at the bottom of the platform (101), a push handle (103) fixedly installed on the outer surface of the platform (101), a counterweight (104) fixedly installed on the outer surface of the platform (101), and a first fixed block (105) fixedly installed on the outer surface of the platform (101). The drive mechanism (200) comprises a first cylinder (201) fixedly installed at the top of the platform (101), a fixed column (202) sleeved on the outer surface of the output end of the first cylinder (201), a fixed sleeve (203) fixedly installed on the end surface of the first cylinder (201), an inner support assembly (204) used in cooperation with the first cylinder (201) during extension and retraction, and an adjusting assembly (205) used in cooperation with the inner support assembly (204). The inner surface of the first cylinder (201) is rotationally connected to the outer surface of the first fixed block (105), and a bearing sleeve used in cooperation with rotation is installed at the connection.

2. The undercarriage welding apparatus of claim 1, wherein: The inner support assembly (204) comprises a first guide rod (204a) rotationally connected to the inner surface of the fixed sleeve (203), a plurality of limiting blocks (204b) fixedly installed on the outer surface of the fixed column (202), a second guide rod (204c) rotationally connected to the inner surface of the limiting block (204b), and an arc-shaped clamping plate (204d) rotationally connected to the inner surfaces of the other ends of the first guide rod (204a) and the second guide rod (204c).

3. The undercarriage welding apparatus of claim 2, wherein: The fixed sleeve (203) is provided with a bearing sleeve used in cooperation at the connection with the first guide rod (204a), and the first guide rod (204a) is provided with a bearing sleeve used in cooperation with rotation at the connection with the arc-shaped clamping plate (204d).

4. The undercarriage welding apparatus of claim 3, wherein: The limiting block (204b) is provided with a bearing sleeve used in cooperation with rotation at the connection with the second guide rod (204c), and the second guide rod (204c) is provided with a bearing sleeve used in cooperation with rotation at the connection with the arc-shaped clamping plate (204d).

5. The undercarriage welding apparatus of claim 4, wherein: The adjusting assembly (205) comprises a second fixed block (205a) fixedly installed on the outer surface of the platform (101), a second cylinder (205b) rotationally connected to the outer surface of the second fixed block (205a), and a positioning block (205c) fixedly installed on the outer surface of the fixed column (202).

6. A device for welding the lower frame of an excavator according to claim 5, characterized in that: The second fixed block (205a) is provided with a bearing sleeve used in cooperation with rotation at the connection with the positioning block (205c), and the output end of the second cylinder (205b) is rotationally connected to the inner surface of the positioning block (205c) and provided with a bearing sleeve used in cooperation with rotation at the connection.

7. A device for welding the lower frame of an excavator according to claim 6, characterized in that: ​

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