Rectangular tube clamping tool

Abstract

The utility model belongs to the technical field of machining, disclose a rectangular tube clamping frock, including first limit piece, second limit piece and locking piece, first limit piece includes first connecting portion and first limit portion who is connected with the angle, second limit piece includes second connecting portion and second limit portion who is connected with the angle, be equipped with the first adapter on first connecting portion, first adapter and first limit portion interval setting along the length direction of first connecting portion, be equipped with the second adapter of rotation cooperation with first adapter on second connecting portion, second adapter and second limit portion interval setting along the length direction of second connecting portion, first limit portion and second limit portion are set up towards, for the relative two sides of common clamping rectangular tube, locking piece and first connecting portion and second connecting portion coupling, be configured as the relative position of locking first limit piece and second limit piece.

Description

Technical Field

[0001] This utility model relates to the field of machining technology, and in particular to a rectangular tube clamping fixture. Background Technology

[0002] When maintaining and servicing equipment in the power workshop, it is often necessary to weld the rectangular tube supports of large power equipment. Such welding operations require that two or more parallel rectangular tubes be completely close together to avoid gaps. Otherwise, the weld joint strength will be insufficient, affecting the stability and service life of the equipment, and may even cause safety hazards.

[0003] However, in actual construction, the problem of limited construction space is often encountered, especially with the complex structure around power equipment and narrow operating space, making it difficult for traditional clamping tools to adapt. Existing clamping devices, such as bench vises, generally have the disadvantages of large size and high operating space requirements. They cannot be used flexibly in confined spaces and are difficult to effectively clamp side by side rectangular tubes. As a result, the rectangular tubes cannot be reliably fixed during welding, and they are prone to not being fully clamped, which in turn produces welding gaps.

[0004] Therefore, there is an urgent need to propose a rectangular tube clamping fixture to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to solve or at least alleviate some or all of the aforementioned problems. Therefore, the purpose of this invention is to provide a rectangular tube clamping fixture that can reliably close and position rectangular tubes in a confined working space, eliminate gaps between rectangular tubes, and ensure the reliability of rectangular tube welding.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A rectangular tube clamping fixture includes a first limiting member, a second limiting member, and a locking member. The first limiting member includes a first connecting portion and a first limiting portion connected at an angle. The second limiting member includes a second connecting portion and a second limiting portion connected at an angle. The first connecting portion has a first transition portion, which is spaced apart from the first limiting portion along the length direction of the first connecting portion. The second connecting portion has a second transition portion that rotatably engages with the first transition portion, which is spaced apart from the second limiting portion along the length direction of the second connecting portion. The first limiting portion and the second limiting portion are arranged facing each other for jointly clamping the opposite sides of the rectangular tube. The locking member is coupled to the first connecting portion and the second connecting portion and is configured to lock the relative positions of the first limiting member and the second limiting member.

[0008] In some alternative embodiments, one of the first adapter and the second adapter is a rotating column, and the other is a sleeve that rotates with the rotating column.

[0009] In some alternative embodiments, the rotating column is provided with a threaded section, and the locking member includes a locking nut that is threadedly engaged with the threaded section for locking the relative positions of the first connecting part and the second connecting part.

[0010] In some optional embodiments, the included angle between the first connecting portion and the first limiting portion, and the included angle between the second connecting portion and the second limiting portion are both right angles.

[0011] In some alternative embodiments, both the first limiting portion and the second limiting portion are cylindrical.

[0012] In some alternative embodiments, one of the first limiting part and the second limiting part is cylindrical, and the other is fixedly connected with a snap-fit ​​plate for fitting against the side wall of the rectangular tube.

[0013] In some optional embodiments, anti-slip structures are provided on the clamping surfaces of the first limiting part and the second limiting part.

[0014] In some alternative embodiments, the anti-slip structure is a knurled texture.

[0015] In some alternative embodiments, the first connecting portion has a gripping end for manual operation, and the distance between the first adapter portion and the first limiting portion in the length direction of the first connecting portion is less than the distance between the gripping end and the first limiting portion.

[0016] In some alternative embodiments, the grip end is provided with an anti-slip structure.

[0017] The beneficial effects of this utility model are:

[0018] This utility model provides a rectangular tube clamping fixture, including a first limiting member, a second limiting member, and a locking member. The first limiting member includes a first connecting part and a first limiting part connected at an angle. The second limiting member includes a second connecting part and a second limiting part connected at an angle. The first connecting part is provided with a first transition part, which is spaced apart from the first limiting part along the length direction of the first connecting part. The second connecting part is provided with a second transition part that rotatably engages with the first transition part, which is spaced apart from the second limiting part along the length direction of the second connecting part. The first limiting part and the second limiting part are arranged facing each other and are used to jointly clamp the opposite sides of the rectangular tube. The locking member is coupled to the first connecting part and the second connecting part and is configured to lock the relative positions of the first limiting member and the second limiting member.

[0019] The aforementioned rectangular tube clamping fixture features a compact and small design, significantly reducing the space required for operation. It can flexibly adapt to confined working environments, effectively solving the problem of traditional large clamps being difficult to operate in narrow spaces. Through the rotational engagement of the first and second limiting components, combined with the locking action of the locking element, and utilizing the lever principle, a stable clamping force is formed between the first and second limiting parts. This allows for the rapid and reliable positioning of two or more rectangular tubes, ensuring that the opposite sides of the tubes are firmly clamped, completely eliminating gaps between tubes and preventing relative displacement during welding. This design not only ensures the strength of the rectangular tube weld joint and improves welding reliability and accuracy, but also simplifies the operation process, making installation and disassembly convenient. It adapts to the clamping needs of rectangular tubes of different specifications, balancing practicality and versatility, and significantly optimizing the efficiency and quality of rectangular tube welding in confined spaces. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the content of the embodiments of this utility model and these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the rectangular tube clamping fixture described in this embodiment of the utility model, used to clamp a rectangular tube. Figure 1 ;

[0022] Figure 2 This is an exploded view of the rectangular tube clamping fixture described in this embodiment of the utility model;

[0023] Figure 3 This is a schematic diagram of the rectangular tube clamping fixture described in this embodiment of the utility model, used to clamp a rectangular tube. Figure 2 .

[0024] In the picture:

[0025] 100. Rectangular tube;

[0026] 1. First limiting member; 11. First connecting part; 111. Grip end; 12. First limiting part; 13. Rotating column; 14. Threaded section;

[0027] 2. Second limiting component; 21. Second connecting part; 22. Second limiting part; 23. Sleeve; 24. Snap-fit ​​plate;

[0028] 3. Tighten the nut. Detailed Implementation

[0029] The embodiments of this utility model are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar parts or parts having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0030] In this invention, the terms "comprising," "including," "having," or any other variations thereof are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0031] In this invention, the term "and / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent three situations: A exists alone, A and B exist simultaneously, and B exists alone. Additionally, in this invention, the character " / " generally indicates that the preceding and following related objects have an "and / or" relationship.

[0032] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," "fixed," "combined," "coupled," and "installed" should be interpreted broadly. For example, they can refer to a fixed connection or a detachable connection; they can be a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For example, a direct connection refers to two parts or components being connected together without an intermediate component, while an indirect connection refers to two parts or components each being connected to at least one intermediate component, with the connection achieved through the intermediate component. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances. Furthermore, "connected" and "coupled" are not limited to physical or mechanical connections or couplings, but can also include electrical connections or couplings.

[0033] In this invention, those skilled in the art will understand that relative terms (e.g., “about,” “approximately,” “basically,” etc.) used in conjunction with quantities or conditions are to include the value and have the meaning indicated by the context. For example, such relative terms include at least the degree of error associated with the measurement of a particular value, tolerances associated with the particular value due to manufacturing, assembly, use, etc. Such terms should also be considered as disclosing a range defined by the absolute values ​​of the two endpoints. Relative terms may refer to a certain percentage (e.g., 1%, 5%, 10% or more) of the indicated value. Numerical values ​​not using relative terms should also be disclosed as specific values ​​with tolerances. Furthermore, “basically” when expressing relative angular relationships (e.g., substantially parallel, substantially perpendicular) may refer to a certain degree (e.g., 1 degree, 5 degrees, 10 degrees or more) added to or subtracted from the indicated angle.

[0034] In this invention, those skilled in the art will understand that the function performed by a component can be performed by one component, multiple components, one part, or multiple parts. Similarly, the function performed by a part can be performed by one part, one component, or a combination of multiple parts.

[0035] In this utility model, the terms "upper," "lower," "left," "right," "front," and "rear," etc., refer to the orientation or positional relationships shown in the accompanying drawings. They are used solely for ease of description and simplification of operation, 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, they should not be construed as limitations on this utility model. Furthermore, in the context, it should be understood that when an element is mentioned as being "upper" or "lower" of another element, it can be directly connected to the other element "upper" or "lower," or indirectly connected through an intermediate element. It should also be understood that directional terms such as "upper side," "lower side," "left side," "right side," "front side," and "rear side" not only represent positive orientation but can also be understood as lateral orientation. For example, "above," "on top of," "upper side of," and "above" of the first feature and the second feature include the first feature being directly above, to the upper left, to the upper right, to the upper front, and to the upper rear of the second feature, or simply indicating that the first feature is at a higher horizontal level than the second feature. The terms "below," "under," "below," and "below" for "first feature" and "second feature" include situations where the first feature is directly below, to the lower left, to the lower right, in front of, or behind the second feature, or simply indicate that the first feature is at a lower horizontal level than the second feature. Furthermore, the terms "first" and "second" are used merely for descriptive distinction and have no specific meaning.

[0036] like Figure 1 and Figure 2As shown, this embodiment provides a rectangular tube clamping fixture, including a first limiting member 1, a second limiting member 2, and a locking member. The first limiting member 1 includes a first connecting portion 11 and a first limiting portion 12 connected at an angle. The second limiting member 2 includes a second connecting portion 21 and a second limiting portion 22 connected at an angle. The first connecting portion 11 is provided with a first transition portion, and the first transition portion and the first limiting portion 12 are spaced apart along the length direction of the first connecting portion 11. The second connecting portion 21 is provided with a second transition portion that rotatably engages with the first transition portion, and the second transition portion and the second limiting portion 22 are spaced apart along the length direction of the second connecting portion 21. The first limiting portion 12 and the second limiting portion 22 are arranged facing each other for jointly clamping the opposite sides of the rectangular tube 100. The locking member is coupled to the first connecting portion 11 and the second connecting portion 21 and is configured to lock the relative positions of the first limiting member 1 and the second limiting member 2.

[0037] The aforementioned rectangular tube clamping fixture features a compact and small design, significantly reducing the space occupied during operation. It can flexibly adapt to confined working environments, effectively solving the problem of traditional large clamps being difficult to operate in narrow spaces. Through the rotational cooperation of the first limiting member 1 and the second limiting member 2, combined with the locking effect of the locking element, and utilizing the lever principle, the first limiting part 12 and the second limiting part 22 form a stable clamping force. This allows for the rapid and reliable positioning of two or more rectangular tubes 100, ensuring that the opposite sides of the rectangular tubes 100 are firmly clamped, completely eliminating gaps between tubes and preventing relative displacement during welding. This not only ensures the strength of the welded joint of the rectangular tubes 100, improving welding reliability and accuracy, but also simplifies the operation process, making installation and disassembly convenient. It adapts to the clamping requirements of rectangular tubes 100 of different specifications. Furthermore, the clamping force can be flexibly adjusted by changing the relative position of the first limiting member 1 and the second limiting member 2, balancing practicality and versatility, and significantly optimizing the efficiency and quality of rectangular tube welding in confined spaces.

[0038] In some optional embodiments, one of the first adapter and the second adapter is a rotating column 13, and the other is a sleeve 23 that rotates with the rotating column 13. The structure is simple and reliable, the manufacturing cost is low, and it is easy to maintain, which improves the practicality and reliability of the tooling.

[0039] Furthermore, the rotating column 13 is provided with a threaded section 14, and the locking component includes a locking nut 3 that is threadedly engaged with the threaded section 14, used to lock the relative positions of the first connecting part 11 and the second connecting part 21. When the first limiting member 1 and the second limiting member 2 bring the rectangular tube 100 together, the two can be rigidly locked immediately by tightening the nut, thereby maintaining the clamping force for a long time, freeing the operator's hands, and eliminating the risk of the rectangular tube 100 springing back and gap recurrence due to external force or vibration, providing continuous and stable positioning guarantee for subsequent welding.

[0040] Furthermore, the separate design of the first limiting member 1, the second limiting member 2, and the locking nut 3 allows the rectangular tube clamping fixture to be disassembled into three independent parts, improving the convenience for workers to carry and store the fixture. Moreover, by loosening the locking nut 3, the first limiting member 1 and the second limiting member 2 can be rotated in a direction away from each other, allowing the fixture to be transferred to the next welding position for clamping and positioning without complicated disassembly steps. Its convenient assembly and disassembly are conducive to improving welding efficiency.

[0041] Optionally, in other embodiments, the first adapter and the second adapter may also be connected by a pin or a hinge to achieve rotational engagement; the locking member may also be engaged with the first limiting member 1 and the second limiting member 2 to fix their relative positions, which is not limited here.

[0042] In some optional embodiments, the included angle between the first connecting portion 11 and the first limiting portion 12, and the included angle between the second connecting portion 21 and the second limiting portion 22, are both right angles. The connecting portion and the limiting portion are arranged perpendicularly to avoid redundant overhangs or outward expansion structures, so that the overall outline of the tooling fits tightly against the side of the clamped rectangular tube 100, minimizing its space occupation in the width and depth directions, making the tooling adaptable to the needs of operations in confined spaces.

[0043] In some optional embodiments, both the first limiting part 12 and the second limiting part 22 are cylindrical. The convex cylindrical surface of the cylindrical limiting part forms an adaptive universal contact surface. Regardless of the angle to which the first limiting member 1 and the second limiting member 2 rotate to adapt to rectangular tubes 100 of different widths, this surface can form a continuous and stable line contact with the side of the rectangular tube 100, ensuring stable clamping. The compact axial shape of the cylinder allows the entire clamp to penetrate into narrow gaps, achieving reliable clamping and positioning in confined spaces, greatly improving spatial adaptability and ease of operation.

[0044] like Figure 3 As shown, in another optional embodiment, one of the first limiting part 12 and the second limiting part 22 is cylindrical, and the other is fixedly connected to a snap-fit ​​plate 24 for engaging with the side wall of the rectangular tube 100. The snap-fit ​​plate 24 provides a reference plane for rigid engagement, ensuring stable and accurate positioning of one side of the rectangular tube 100, while the cylindrical limiting part provides adaptive angle adjustment, which can flexibly adapt to rectangular tubes 100 of different widths. The two work together to achieve flexible and reliable engagement and limiting of rectangular tubes 100 of different widths while ensuring compact space adaptability.

[0045] In some optional embodiments, the clamping surfaces of the first limiting part 12 and the second limiting part 22 are provided with anti-slip structures, which can increase the static friction between the limiting part and the smooth metal surface of the rectangular tube 100, prevent relative sliding or displacement between the limiting part and the rectangular tube 100, and ensure that the position of the rectangular tube 100 can be reliably locked throughout the entire process from close proximity to completion of welding, thereby ensuring the alignment accuracy and bonding quality of the welded joint.

[0046] In some alternative embodiments, the anti-slip structure is a knurled texture. Alternatively, the anti-slip structure may also employ a rubber pad or a dotted texture.

[0047] In some optional embodiments, the first connecting portion 11 has a gripping end 111 for manual operation. The distance between the first transition portion and the first limiting portion 12 along the length of the first connecting portion 11 is less than the distance between the gripping end 111 and the first limiting portion 12. The first transition portion acts as a fulcrum, causing the gripping end 111 to form a longer power arm, and the first limiting portion 12 to form a short resistance arm. During operation, the operator applies a small force to the gripping end 111, which, through a leverage effect, generates a strong clamping force at the first limiting portion 12, quickly clamping the rectangular tube 100 together with the second limiting portion 22. Furthermore, the longer power arm allows the operator to apply force through the gripping end 111 to insert the first limiting portion 12 and the second limiting portion 22 into narrow gaps, achieving reliable positioning of the rectangular tube 100 within narrow spaces. This design reduces the operational intensity in confined spaces, enabling reliable locking without the need for additional tools. It also ensures clamping stability through precise lever arm ratio, preventing 100° displacement or gaps in the rectangular tube. While saving operating space, it further enhances the convenience and reliability of welding operations, meeting the needs of efficient construction in confined spaces.

[0048] Furthermore, the grip end 111 is provided with an anti-slip structure to increase the friction between the operator's hand and the grip end 111, preventing the hand from slipping out of the grip when applying force in a confined space, ensuring that the force can be stably transmitted to the power arm, and helping to reduce the difficulty of operation. Similarly, the anti-slip structure includes, but is not limited to, knurled texture, rubber pads, or dotted texture, and is not limited here.

[0049] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A rectangular tube clamping fixture, characterized in that, The device includes a first limiting member (1), a second limiting member (2), and a locking member. The first limiting member (1) includes a first connecting part (11) and a first limiting part (12) connected at an angle. The second limiting member (2) includes a second connecting part (21) and a second limiting part (22) connected at an angle. The first connecting part (11) is provided with a first transition part. The first transition part and the first limiting part (12) are spaced apart along the length direction of the first connecting part (11). The second connecting part (21) is provided with a second transition part that rotatably cooperates with the first transition part. The second transition part and the second limiting part (22) are spaced apart along the length direction of the second connecting part (21). The first limiting part (12) and the second limiting part (22) are arranged facing each other and are used to jointly clamp the opposite sides of the rectangular tube (100). The locking member is coupled to the first connecting part (11) and the second connecting part (21) and is configured to lock the relative position of the first limiting member (1) and the second limiting member (2).

2. The rectangular tube clamping fixture according to claim 1, characterized in that, One of the first adapter and the second adapter is a rotating column (13), and the other is a sleeve (23) that rotates with the rotating column (13).

3. The rectangular tube clamping fixture according to claim 2, characterized in that, The rotating column (13) is provided with a threaded section (14), and the locking member includes a locking nut (3) that is threadedly engaged with the threaded section (14) for locking the relative positions of the first connecting part (11) and the second connecting part (21).

4. The rectangular tube clamping fixture according to claim 1, characterized in that, The included angle between the first connecting part (11) and the first limiting part (12), and the included angle between the second connecting part (21) and the second limiting part (22) are both right angles.

5. The rectangular tube clamping fixture according to claim 1, characterized in that, Both the first limiting part (12) and the second limiting part (22) are cylindrical.

6. The rectangular tube clamping fixture according to claim 1, characterized in that, One of the first limiting part (12) and the second limiting part (22) is cylindrical, and the other is fixedly connected with a snap-fit ​​plate (24) for fitting against the side wall of the rectangular tube (100).

7. The rectangular tube clamping fixture according to claim 1, characterized in that, Both the first limiting part (12) and the second limiting part (22) have anti-slip structures on their clamping surfaces.

8. The rectangular tube clamping fixture according to claim 7, characterized in that, The anti-slip structure has a knurled texture.

9. The rectangular tube clamping fixture according to claim 1, characterized in that, The first connecting part (11) has a gripping end (111) for manual operation. In the length direction of the first connecting part (11), the distance between the first adapter and the first limiting part (12) is less than the distance between the gripping end (111) and the first limiting part (12).

10. The rectangular tube clamping fixture according to claim 9, characterized in that, The grip end (111) is provided with an anti-slip structure.

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