Supporting assembly for welding large arm of excavator

Abstract

A supporting assembly for excavator big arm welding comprises a bottom plate, a supporting assembly body, a positioning assembly and a pressing assembly are fixedly arranged on the upper portion of the bottom plate, the pressing assembly comprises a plurality of pressing columns symmetrically and fixedly arranged on the upper portion of the bottom plate, and rotatable rolling wheels are fixedly arranged at the upper ends of the pressing columns. The distance between the corresponding rollers is equal to the fixed distance between the large arm side plates; a common air cylinder pressing tool is not used, the idler wheels at the fixed positions are adopted for positioning and pressing, secondary positioning is not needed, pressing and loosening are not needed, the side plates can be positioned and pressed along the positions below the idler wheels, and time and labor are saved.

Description

Technical Field

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

[0002] The boom and stick refer to a working device on an excavator, also commonly called the boom and arm. Their main function is to control the digging and loading actions of the bucket. The arm connected to the frame is longer, hence the common name "boom," and its technical term is boom; the arm connected to the bucket is shorter, hence the common name "arm," and its technical term is stick. Therefore, they are commonly referred to as the boom and arm.

[0003] The boom of a backhoe excavator generally has a slight curve, which allows for better excavation of soil below the machine's stopping surface. A front shovel excavator, on the other hand, typically has a straight boom, which allows for better excavation of soil above the stopping surface. Its structure is generally box-type, with top and bottom cover plates, two side wall plates, a boom seat at the frame connection, a boom middle sleeve at the connection to the boom cylinder rod, a cylinder lug at the connection to the cylinder head, and a boom hairpin at the connection to the boom arm.

[0004] When welding the boom, assembly fixtures are needed to clamp the base plate and the two side plates before welding. After welding the internal structure, the top plate is then installed and welded. However, the fixtures currently used usually use cylinders for fixing and clamping, which requires adjusting the clamping torque. Also, clamping and loosening take a certain amount of time. Utility Model Content

[0005] One advantage of this invention is that it provides a support component for welding excavator booms. Instead of using common cylinder clamping fixtures, it uses fixed-position rollers for positioning and clamping. No secondary positioning or clamping and loosening is required. Positioning and clamping can be completed by simply placing the side plate under the rollers, saving time and effort.

[0006] To achieve at least one of the above advantages of this utility model, this utility model provides a support assembly for welding the boom of an excavator, including a base plate. A support assembly, a positioning assembly, and a clamping assembly are fixedly arranged on the upper part of the base plate. The clamping assembly includes a plurality of clamping columns symmetrically fixedly arranged on the upper part of the base plate. Rotatable rollers are fixedly arranged at the upper ends of the clamping columns, and the distance between the corresponding rollers is equal to the fixed distance between the side plates of the boom.

[0007] According to one embodiment of the present invention, a first pressing column is provided at both ends of the base plate, a second pressing column is provided in the middle of the base plate, and rollers are provided at the upper ends of both the first pressing column and the second pressing column.

[0008] According to one embodiment of the present invention, the positioning component includes a first positioner disposed near the first clamping post and a second positioner disposed near the second clamping post.

[0009] According to one embodiment of the present invention, both the first positioner and the second positioner are pneumatic piston structures.

[0010] According to one embodiment of the present invention, the support assembly includes a first support base and two second support bases, the two second support bases being located on both sides of the first support base and both being lower than the first support base.

[0011] According to one embodiment of the present invention, both the first support base and the second support base are provided with reinforcing ribs on their sides. Attached Figure Description

[0012] Figure 1 This is a top view of the structure of this utility model;

[0013] Figure 2 This is a side view of the structure of this utility model;

[0014] In the attached diagram: 1. Base plate, 2. First locator, 3. First clamping column, 4. Second clamping column, 5. Second locator, 6. First support seat, 7. Second support seat, 8. Locating pin, 9. Roller. Detailed Implementation

[0015] To make the objectives, technical solutions, and advantages of this utility model clearer, the following description will be provided in conjunction with the appendix of this utility model. Figure 1 ~Attached Figure 2 The present invention will be described in more detail below.

[0016] The following description is intended to disclose the present invention so that those skilled in the art can implement it. The preferred embodiments described below are merely examples, and other obvious variations will occur to those skilled in the art. The basic principles of the present invention defined in the following description can be applied to other embodiments, modifications, improvements, equivalents, and other technical solutions that do not depart from the spirit and scope of the present invention.

[0017] Those skilled in the art should understand that, in the disclosure of this specification, the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the above terms should not be construed as limitations on this utility model.

[0018] It is understood that the term "a" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element can be one, while in another embodiment, the number of the element can be multiple, and the term "a" should not be understood as a limitation on the number.

[0019] This utility model provides a support assembly for welding the boom of an excavator, including a base plate 1. A support assembly, a positioning assembly, and a clamping assembly are fixedly mounted on the upper part of the base plate 1. The clamping assembly includes several clamping columns symmetrically fixed on the upper part of the base plate 1. Rotatable rollers 9 are fixedly mounted on the upper ends of the clamping columns, and the distance between corresponding rollers 9 is equal to the fixed distance between the side plates of the boom. First clamping columns 3 are provided at both ends of the base plate 1, and second clamping columns 4 are provided in the middle of the base plate 1. Rollers 9 are provided on the upper ends of both the first clamping columns 3 and the second clamping columns 4. The positioning assembly includes a first positioner 2 located near the first clamping column 3 and a second positioner 5 located near the second clamping column 4. Both the first positioner 2 and the second positioner 5 are pneumatic piston structures. The support assembly includes a first support seat 6 and two second support seats 7. The two second support seats 7 are located on both sides of the first support seat 6 and their heights are both lower than the first support seat 6. Reinforcing ribs are provided on the sides of both the first support seat 6 and the second support seat 7.

[0020] The first embodiment of this utility model is as follows:

[0021] A support assembly for welding the boom of an excavator includes a base plate 1. A support assembly, a positioning assembly, and a clamping assembly are fixedly mounted on the upper part of the base plate 1. The support assembly is used to place and support the base plate 1. The support assembly includes a first support seat 6 and two second support seats 7. The two second support seats 7 are located on both sides of the first support seat 6 and are both lower than the first support seat 6. The first support seat 6 is used to support the middle part of the base plate 1, and the second support seats 7 are used to support the two ends of the base plate 1. The sides of the first support seat 6 and the second support seat 7 are provided with reinforcing ribs. The positioning assembly is used to place and position the bushing and the ear plate. The positioning assembly includes a first positioner 2 located near the first clamping post 3 and a second positioner 5 located near the second clamping post 4. The first positioner 2 and the second positioner 5 are both pneumatic piston structures. The bushing and the ear plate are fixed by the positioning pin 8 at the end of the pneumatic piston extending and retracting.

[0022] Since one end of the side plate is required to be placed outside the seat sleeve during welding, it can be clamped and fixed by cooperating with the clamping assembly. The clamping assembly includes a first clamping column 3 and a second clamping column 4 symmetrically fixed on the upper part of the base plate 1. The first clamping column 3 is provided at both ends of the base plate 1, and the second clamping column 4 is provided in the middle of the base plate 1. Rollers 9 are provided at the upper ends of the first clamping column 3 and the second clamping column 4. The distance between the corresponding rollers 9 is equal to the fixed distance between the boom side plates. In use, the base plate 1 is first placed on the first support seat 6 and the second support seat 7. Then the bushing is fixed by the first locator 2. Then the two side plates slide in from top to bottom and contact the bushing and the base plate 1. Then the ear plate is installed and fixed. After that, the components are initially connected by spot welding. Then the next welding is carried out. After the internal structure is welded, the top plate is installed and welded. Then the boom can be lifted out directly by a crane or other equipment. During the lifting of the boom, the rollers 9 will roll along the side plates.

[0023] It should be noted that the terms "first, second, and third" used in this utility model are for descriptive purposes only and do not indicate any order. They should not be construed as indicating or implying relative importance, and can be interpreted as names.

[0024] Those skilled in the art should understand that the embodiments of the present invention described above and shown in the accompanying drawings are merely examples and do not limit the present invention. The advantages of the present invention have been fully and effectively realized. The functional and structural principles of the present invention have been shown and explained in the embodiments. Without departing from the principles, the implementation of the present invention may have any modifications or variations.

Claims

1. A support assembly for welding the boom of an excavator, characterized in that: The device includes a base plate, on the upper part of which a support assembly, a positioning assembly, and a clamping assembly are fixedly mounted. The clamping assembly includes several clamping columns symmetrically fixed on the upper part of the base plate. The upper end of each clamping column is fixedly mounted with a rotatable roller, and the distance between the rollers is equal to the fixed distance between the side plates of the boom.

2. The support assembly for welding the excavator boom according to claim 1, characterized in that: The base plate is provided with first clamping columns at both ends and a second clamping column in the middle. Rollers are provided at the upper ends of the first and second clamping columns.

3. The support assembly for welding the excavator boom according to claim 2, characterized in that: The positioning component includes a first positioner located near the first clamping post and a second positioner located near the second clamping post.

4. The support assembly for welding the excavator boom according to claim 3, characterized in that: Both the first and second positioners are pneumatic piston structures.

5. The support assembly for welding the excavator boom according to claim 1, characterized in that: The support assembly includes a first support base and two second support bases, with the two second support bases located on both sides of the first support base and both lower than the first support base.

6. The support assembly for welding the excavator boom according to claim 5, characterized in that: The sides of both the first and second support bases are provided with reinforcing ribs.

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