Welding positioning clamp for supporting legs

Abstract

The welding positioning clamp comprises a transverse rod and a supporting stand column arranged in the middle of the transverse rod, clamping grooves are symmetrically machined in the left side and the right side of the transverse rod, the supporting stand column comprises a polished rod section and a screw rod section which are integrally connected, and the upper end of the polished rod section is fixedly connected with the transverse rod; during working, the side supports are arranged on the upper portion of the base in a bilateral symmetry mode, after the clamping grooves in the transverse rod and the upper portions of the side supports are clamped and positioned, the polished rod section is arranged between the transverse rod and the base, the screw rod section penetrates through the auxiliary hole in the center of the base in a matched mode and is locked and positioned through the locking nut, and then the connecting positions of the side supports and the base are welded and positioned through the welding mechanism. According to the clamp structure, the clamping grooves are machined in the cross rods to be clamped and positioned with the side supports, the two ends of the supporting stand columns are connected with the cross rods and the base correspondingly to form an I-shaped positioning structure, the side supports are positioned between the cross rods and the base, positioning is accurate during welding, the side supports are prevented from inclining laterally, meanwhile, the concentricity of positioning holes in the two side supports is guaranteed, and welding quality is improved. Welding forming is simple and convenient, and welding quality is high.

Description

Technical Field

[0001] The utility model relates to a welding positioning fixture for a leg. Background Art

[0002] Semi-trailer outriggers are commonly known as outriggers. They are divided into left and right legs. Their functions are to support the semi-trailer after it is separated from the front of the vehicle. However, their styles and types are different. The work of the outriggers is achieved by the internal outriggers and the rotating shafts moving relative to the outer shell through different power (such as hydraulic transmission, electric transmission, manual). The outriggers structurally include a base, a side bracket, a hollow shaft, a rotating sleeve, and a pillar. The side brackets are vertically installed on the base in a bilaterally symmetrical manner. The connection between the side brackets and the base is achieved by welding. In the existing welding process, a single positioning welding method is generally used between the side brackets and the base. The two side brackets need to be positioned twice. After welding, the concentricity of the positioning holes on the two side brackets is prone to deviation, which affects the subsequent assembly. Utility Model Content

[0003] In view of the shortcomings existing in the above problems, the utility model provides a welding positioning fixture for a leg.

[0004] To achieve the above-mentioned purpose, the utility model provides a welding positioning fixture for a leg, comprising a cross bar and a supporting column arranged in the middle of the cross bar, wherein grooves are symmetrically processed on the left and right sides of the cross bar, and the supporting column comprises an integrally connected light rod section and a screw rod section, wherein the upper end of the light rod section is connected and fixed to the cross bar, and after the grooves on the cross bar are respectively engaged and positioned with the upper part of the side bracket, the light rod section is placed between the cross bar and the base, and the screw section cooperates to pass through the process hole at the center of the base and is locked and positioned by a locking nut.

[0005] As a further improvement of the present invention, the width of the card slot matches the thickness of the side bracket, and the distance between the two card slots matches the spacing between the side brackets.

[0006] As a further improvement of the utility model, the height difference between the side bracket and the polished rod segment matches the depth of the slot.

[0007] As a further improvement of the utility model, the connection between the polished rod segment and the screw rod segment radially extends to form an annular boss, and the bottom surface of the annular boss abuts against the surface of the base.

[0008] The beneficial effects of the utility model are:

[0009] The clamp structure positions the side bracket through the cooperation of the cross bar and the supporting column, and the card groove is processed on the cross bar and the side bracket is engaged and positioned. The two ends of the supporting column are respectively connected to the cross bar and the base to form an I-shaped positioning structure. The center of the base is provided with a process hole, and the screw section at the lower part of the supporting column cooperates with the process hole and is locked and positioned by a locking nut, so that the two side brackets are positioned between the cross bar and the base at the same time. The positioning is accurate during welding, which prevents the side bracket from tilting sideways and ensures the concentricity of the two side brackets after welding. The welding forming is simple and convenient, and the welding quality is high. An annular boss is provided at the connection between the bare rod section and the screw section of the supporting column, and the supporting structure of the supporting column is more stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 This is a front view of a welding positioning fixture for a leg of the utility model;

[0011] Figure 2 It is a top view of a welding positioning fixture for a leg of the utility model;

[0012] Figure 3 It is a schematic diagram of the connection between the crossbar 1 and the supporting column 2;

[0013] Figure 4 is a structural diagram of the side bracket 3;

[0014] Figure 5 It is a structural diagram of the base 4.

[0015] In the figure: 1, cross bar; 11, slot; 2, support column; 21, bare rod section; 22, screw section; 23, annular boss; 3, side bracket; 31, positioning block; 32, side flange; 33, positioning hole 33; 4, base; 41, lower flange; 42, positioning slot; 43, process hole; 5, locking nut. DETAILED DESCRIPTION

[0016] like Figure 1-3 As shown, a welding positioning fixture for a leg described in the utility model comprises a cross bar 1 and a supporting column 2 arranged in the middle of the cross bar 1. The left and right sides of the cross bar 1 are symmetrically processed with grooves 11. The supporting column 2 comprises an integrally connected light rod section 21 and a screw section 22. The upper end of the light rod section 21 is connected and fixed to the cross bar 1. After the grooves 11 on the cross bar 1 are respectively engaged and positioned with the upper part of the side bracket 3, the width of the grooves 11 matches the thickness of the side bracket 3, the distance between the two grooves 11 matches the spacing of the side bracket 3, the height difference between the side bracket 3 and the light rod section 21 matches the depth of the groove 11, the light rod section 21 is placed between the cross bar 1 and the base 4, the screw section 22 cooperates to pass through the process hole 43 at the center of the base 4 and is locked and positioned by a locking nut 5, and the connection between the light rod section 21 and the screw section 22 radially extends to form an annular boss 23, and the bottom surface of the annular boss 23 abuts against the surface of the base 4.

[0017] The clamp structure positions the side bracket through the cooperation of the cross bar and the supporting column, and the card groove is processed on the cross bar and the side bracket is engaged and positioned. The two ends of the supporting column are respectively connected to the cross bar and the base to form an I-shaped positioning structure. The center of the base is provided with a process hole, and the screw section at the lower part of the supporting column cooperates with the process hole and is locked and positioned by a locking nut, so that the two side brackets are positioned between the cross bar and the base at the same time. The positioning is accurate during welding, which prevents the side bracket from tilting sideways and ensures the concentricity of the two side brackets after welding. The welding forming is simple and convenient, and the welding quality is high. An annular boss is provided at the connection between the bare rod section and the screw section of the supporting column, and the supporting structure of the supporting column is more stable.

[0018] In order to facilitate the understanding of the present invention, the following description is given in conjunction with the accompanying drawings during specific use;

[0019] like Figure 4 The structure diagram of the side bracket 3 is shown. The lower part of the side bracket 3 is provided with an integrated positioning block 31. The two sides of the side bracket 3 are bent to form side flanges 32. The middle part of the side bracket 3 is provided with a positioning hole 33 for subsequent connection with the rotating shaft. Figure 5 The structure of the base 4 is shown. The base 4 is bent downward twice to form a lower flange 41. A process hole 43 is processed through the center of the base 4. Positioning grooves 42 are symmetrically arranged on both sides of the process hole 43 to match the positioning block 31.

[0020] When working, the side brackets are placed symmetrically on the upper part of the base, with the lower flange of the base facing downward, and the positioning block at the lower part of the side bracket is cooperated to extend into the positioning groove of the base. The side flanges of the two side brackets are arranged back to back, and the positioning holes on the two side brackets are arranged concentrically. After the slots on the cross bar are respectively engaged with the upper part of the side brackets for positioning, the bare rod section is placed between the cross bar and the base, and the screw rod section is cooperated to pass through the process hole at the center of the base and is locked and positioned by the locking nut. The two side brackets are positioned between the base and the cross bar at the same time, and then the welding mechanism is used to weld the inner and outer sides of the connection position of the side bracket and the base in sequence.

[0021] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A welding positioning fixture for a leg, characterized in that: It comprises a cross bar (1) and a supporting column (2) arranged in the middle of the cross bar (1); the cross bar (1) has symmetrically processed grooves (11) on both sides; the supporting column (2) comprises an integrally connected light rod section (21) and a screw section (22); the upper end of the light rod section (21) is connected and fixed to the cross bar (1); after the grooves (11) on the cross bar (1) are respectively engaged with the upper part of the side bracket (3) for positioning, the light rod section (21) is placed between the cross bar (1) and the base (4); the screw section (22) cooperates to pass through the process hole (43) at the center of the base (4) and is locked and positioned by a locking nut (5).

2. The welding positioning fixture for a leg according to claim 1, characterized in that: The width of the card slot (11) matches the thickness of the side bracket (3), and the distance between the two card slots (11) matches the spacing of the side brackets (3).

3. The welding positioning fixture for a leg according to claim 1, characterized in that: The height difference between the side bracket (3) and the polished rod section (21) matches the depth of the clamping groove (11).

4. The welding positioning fixture for a leg according to claim 1, characterized in that: The connection between the bare rod segment (21) and the screw segment (22) radially extends to form an annular boss (23), and the bottom surface of the annular boss (23) abuts against the surface of the base (4).

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