Width control device and method for door frame structure of aluminum alloy vehicle body

Abstract

The invention belongs to the technical field of rail transit. The width control device comprises a frame structure, a first connecting piece, a second connecting piece, a third connecting piece and a fourth connecting piece, the first connecting piece and the second connecting piece are located on one side of the frame structure, and the third connecting piece and the fourth connecting piece are located on the other side of the frame structure. The lengths of the first connecting piece, the second connecting piece, the third connecting piece and the fourth connecting piece are adjustable, and the tail ends of the first connecting piece, the second connecting piece, the third connecting piece and the fourth connecting piece are detachably connected with aluminum plates; the first connecting piece and the second connecting piece are used for being welded and fixed to a stand column on one side of a door frame through the corresponding aluminum plates, and the third connecting piece and the fourth connecting piece are used for being connected with a stand column on the other side of the door frame through the corresponding aluminum plates. The problem that the control precision of the width size of the door frame is low in the installing and welding process of the aluminum alloy motor train unit door frame structure is solved, welding deformation generated in the installing and welding process of the door frame is controlled, and it is guaranteed that the width size of the welded door frame meets the design and process size requirements.

Description

Technical Field

[0001] The present invention relates to the technical field of rail vehicles, and in particular to a width control device and method for an aluminum alloy vehicle body door frame structure. Background Art

[0002] The door frame structure of the high-speed EMU is arranged at both ends of the side wall and is welded together by the door column profile and the side wall profile. Due to the asymmetry of the welding position, the welding shrinkage deformation and angular deformation of the door frame during the welding process cause the door frame width to be out of tolerance and cannot meet the standard requirements for the door frame width.

[0003] At present, the commonly used measures to suppress the deformation of welded structures include: optimizing welding parameters, rigid constraint method, anti-deformation method, etc. Among them, the rigid constraint method mostly adopts the method of setting a support rod between two door columns. Although the arrangement of multiple support rods can provide certain rigid constraints, there is a lack of coordination between the support rods, and there is still a certain deformation during the welding process. In addition, most of the support rods are connected with the columns by a conflict, which may further aggravate the deformation during the welding process. Summary of the invention

[0004] In view of the problem of low control accuracy of door frame width during the assembly and welding of aluminum alloy EMU door frame structures, the present invention provides a device and method for controlling the width of an aluminum alloy car body door frame structure, which realizes the control of welding deformation generated during the assembly and welding of the door frame and ensures that the width of the door frame after welding meets the design and process dimension requirements.

[0005] In order to achieve the above object, the present invention is implemented through the following technical solutions:

[0006] In a first aspect, the present invention provides a width control device for an aluminum alloy vehicle door frame structure.

[0007] A width control device for an aluminum alloy vehicle door frame structure comprises: a frame structure, a first connecting member and a second connecting member located on one side of the frame structure, and a third connecting member and a fourth connecting member located on the other side of the frame structure, wherein the first connecting member, the second connecting member, the third connecting member and the fourth connecting member are all adjustable in length, and the ends of the connecting members are all detachably connected with aluminum plates;

[0008] The first connecting member and the second connecting member are used for welding and fixing to the column on one side of the door frame through the corresponding aluminum plates, and the third connecting member and the fourth connecting member are used for welding and fixing to the aluminum alloy column on the other side of the door frame through the corresponding aluminum plates.

[0009] As a further limitation of the first aspect of the present invention, the frame structure is rectangular, the first connecting member and the second connecting member are located on one side of the rectangular frame structure, and the third connecting member and the fourth connecting member are located on the other side of the rectangular frame structure.

[0010] As a further limitation of the first aspect of the present invention, a reinforcing rod is connected in the middle of the rectangular frame structure, and the reinforcing rod and the connecting rod of the frame structure divide the interior of the frame structure into a plurality of triangular areas.

[0011] As a further limitation of the first aspect of the present invention, the frame structure is made of aluminum alloy, and the frame structure is formed by welding aluminum alloy tubes.

[0012] As a further limitation of the first aspect of the present invention, the first connecting member, the second connecting member, the third connecting member and the fourth connecting member have the same structure and all include:

[0013] A screw sleeve, an adjusting screw, a connecting plate and an aluminum plate. The screw sleeve is used to be fixed inside the frame structure. One end of the adjusting screw is threadedly connected to the screw sleeve, and the other end of the adjusting screw is connected to the connecting plate. The connecting plate is connected to the aluminum plate, and the aluminum plate is used to be welded and fixed to the aluminum alloy column of the door frame.

[0014] As a further limitation of the first aspect of the present invention, the screw sleeve is inserted into the connecting rod of the frame structure, and the screw sleeve is fixed to the connecting rod by bolts or screws; or, the screw sleeve is inserted into the connecting pipe of the frame structure, and the screw sleeve is fixed to the connecting pipe by bolts or screws.

[0015] As a further limitation of the first aspect of the present invention, the connecting plate is a steel plate, and the other end of the adjusting screw is welded and fixed to the connecting plate.

[0016] As a further limitation of the first aspect of the present invention, the aluminum plate is fixedly connected to the connecting plate by bolts or screws.

[0017] As a further limitation of the first aspect of the present invention, after the first connecting member, the second connecting member, the third connecting member and the fourth connecting member are respectively connected to the corresponding door frame columns, the connecting line of the ends of the first connecting member, the second connecting member, the third connecting member and the fourth connecting member forms a parallelogram or a rectangle.

[0018] In a second aspect, the present invention provides a method for controlling the width of an aluminum alloy vehicle door frame structure.

[0019] A method for controlling the width of an aluminum alloy vehicle door frame structure, using the aluminum alloy vehicle door frame structure width control device described in the first aspect of the present invention, comprises the following steps:

[0020] According to the door frame structure and width dimension requirements, the aluminum alloy vehicle door frame structure width control device is installed between the two upright posts of the door frame;

[0021] Adjust the lengths of the first connecting member, the second connecting member, the third connecting member, and the fourth connecting member, and weld and fix the aluminum plate to the corresponding door frame column to form a rigid constraint;

[0022] After the door frame assembly welding is completed, the aluminum plate is removed from the door frame column, and the aluminum alloy body door frame structure width control device is removed.

[0023] The beneficial effects of the present invention are as follows:

[0024] 1. The present invention innovatively proposes a width control device for an aluminum alloy vehicle door frame structure, wherein the first connecting member and the second connecting member are used to be welded and fixed to the column on one side of the door frame through the corresponding aluminum plates, and the third connecting member and the fourth connecting member are used to be welded and fixed to the aluminum alloy column on the other side of the door frame through the corresponding aluminum plates. The aluminum plates are used to achieve stable welding and fixing with the aluminum alloy columns, without the need for strong extrusion of the supporting cross bars, thereby achieving control of welding deformation generated during the door frame assembly welding process and ensuring that the width of the door frame after welding meets the design and process size requirements.

[0025] 2. The present invention innovatively proposes a width control device for an aluminum alloy vehicle door frame structure. The frame structure is rectangular, and a reinforcing rod is connected in the middle of the rectangular frame structure. The reinforcing rod and the connecting rod of the frame structure divide the interior of the frame structure into multiple triangular areas, thereby ensuring stable width control during the entire welding process.

[0026] 3. The present invention innovatively proposes a width control device for an aluminum alloy vehicle door frame structure, wherein each connecting part comprises: a screw sleeve, an adjusting screw, a connecting plate and an aluminum plate. The screw sleeve is used to be fixed inside the frame structure, one end of the adjusting screw is threadedly connected to the screw sleeve, and the other end of the adjusting screw is connected to the connecting plate, the connecting plate is connected to the aluminum plate, the aluminum plate is used to be welded and fixed to the aluminum alloy column of the door frame, and both can achieve a certain elongation. The aluminum plate is used to be welded and fixed to the aluminum alloy column. After use, the aluminum plate can be disassembled, and only the aluminum plate needs to be replaced when used again, thereby reducing costs while ensuring control accuracy.

[0027] 4. The screw sleeve of the present invention is inserted into the connecting rod of the frame structure, and the screw sleeve is fixed to the connecting rod by bolts or screws; or, the screw sleeve is inserted into the connecting pipe of the frame structure, and the screw sleeve is fixed to the connecting pipe by bolts or screws, which can ensure a stable connection between the frame structure and each connecting part and avoid control failure caused by slippage.

[0028] 5. The present invention adopts an integral frame structure, which can ensure the consistency of the upper and lower widths of the door frame. The manufacturing structure is simple. The main body adopts an internal triangular structure frame structure made of aluminum alloy tubes, which is light and strong. The aluminum plate welded to the aluminum alloy door frame is connected to the device through a bolt and nut structure, which is convenient for replacement. The length of the device is adjustable and can meet the requirements of different door frame widths. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The accompanying drawings in the specification, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.

[0030] Figure 1 A schematic structural diagram of a width control device for an aluminum alloy vehicle door frame structure provided in Example 1 of the present invention;

[0031] Figure 2 A schematic diagram of the connection of the components of the connector provided in Example 1 of the present invention;

[0032] Among them, 1. frame structure; 2. first connecting member; 3. second connecting member; 4. third connecting member; 5. fourth connecting member; 6. screw sleeve; 7. adjusting screw; 8. connecting plate; 9. aluminum plate; 10. bolt. DETAILED DESCRIPTION

[0033] It should be noted that the following detailed descriptions are illustrative and intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used in the present invention have the same meanings as those commonly understood by those skilled in the art to which the present invention belongs.

[0034] As introduced in the background art, most existing rigid constraint methods adopt a method of setting a support rod between two door columns. There is still a certain deformation during the welding process, and the friction connection may further aggravate the deformation during the welding process.

[0035] In view of this, the present implementation provides a width control device for an aluminum alloy vehicle door frame structure, such as Figure 1 As shown, it comprises: a frame structure 1 (which can be assembled and welded by aluminum alloy tube profiles), a first connecting member 2 and a second connecting member 3 located on one side of the frame structure, and a third connecting member 4 and a fourth connecting member 5 located on the other side of the frame structure, wherein the first connecting member 2, the second connecting member 3, the third connecting member 4 and the fourth connecting member 5 are all adjustable in length, and the ends are all detachably connected with an aluminum plate 9;

[0036] The first connecting member 2 and the second connecting member 3 are used to be fixedly connected to the column on one side of the door frame through the corresponding aluminum plate 9, and the third connecting member 4 and the fourth connecting member 6 are used to be connected to the column on the other side of the door frame through the corresponding aluminum plate 9.

[0037] In this implementation, the aluminum plate 9 is designed to achieve a reliable and stable connection with the aluminum alloy column (no need for a conflicting connection, i.e., no need to apply excessive extrusion pressure), thereby better achieving high-precision control of the width.

[0038] In this implementation, preferably, the frame structure 1 is rectangular, the first connecting member 2 and the second connecting member 3 are located on one side of the rectangular frame structure, and the third connecting member 4 and the fourth connecting member 5 are located on the other side of the rectangular frame structure.

[0039] In this implementation, further optionally, a reinforcing rod (which may be a solid rod or a hollow tube) is connected in the middle of the rectangular frame structure, and the reinforcing rod and the connecting rod (which may be a solid rod or a hollow tube) of the frame structure 1 divide the interior of the frame structure 1 into multiple triangular areas.

[0040] In this implementation, after being divided into triangular areas, the overall structure of the frame structure 1 is stable, ensuring the accuracy of subsequent width control (no need to adjust the frame structure, only the extension mechanism needs to be adjusted).

[0041] In this implementation, preferably, the frame structure 1 is made of aluminum alloy, and the frame structure 1 is welded by aluminum alloy tubes or aluminum alloy solid rods. The use of aluminum alloy reduces weight, can be more conveniently arranged between the left and right door pillars, is not easy to rust, and avoids wear and tear caused by long-term repeated use.

[0042] In this implementation, preferably, the first connecting member, the second connecting member, the third connecting member and the fourth connecting member have the same structure. Figure 2 As shown, all include:

[0043] Screw sleeve 6, adjusting screw 7, connecting plate 8 and aluminum plate 9, the screw sleeve 6 is used to be fixed inside the frame structure 1, one end of the adjusting screw 7 is threadedly connected to the screw sleeve 6 (the adjusting screw 7 and the screw sleeve 6 are threadedly engaged to ensure the adjustable length), the other end of the adjusting screw 7 is connected to the connecting plate 8, the connecting plate 8 is connected to the aluminum plate 9, and the aluminum plate 9 is used to be connected to the column of the door frame.

[0044] In this implementation, preferably, the aluminum plate 9 is fixedly connected to the connecting plate 8 by bolts or screws. Through the above design, the adjusting screw 7 can achieve stable elongation control, and the connecting plate 8 and the aluminum plate 9 are detachably connected. After use, the aluminum plate can be forcibly removed, and only the aluminum plate needs to be replaced when it is used again, which is low in cost.

[0045] In the present implementation, it is further optional that the screw sleeve 6 is inserted into the connecting rod of the frame structure 1, and the screw sleeve 6 is fixed to the connecting rod by bolts or screws; or, the screw sleeve is inserted into the connecting tube of the frame structure 1, and the screw sleeve 6 is fixed to the connecting tube by bolts or screws. This insertion connection method can ensure the relative stability of the screw sleeve 6 and the frame structure 1, and ensure the stability during use.

[0046] In this implementation, preferably, the connecting plate 8 is a steel plate, and the other end of the adjusting screw 7 is welded and fixed to the connecting plate 8. The welding and fixing of the connecting plate 8 and the adjusting screw 7 can ensure that there will be no slipping or loosening during subsequent width control, thereby ensuring the structural stability of the width control.

[0047] In this implementation, optionally, after the first connecting member 2, the second connecting member 3, the third connecting member 4, and the fourth connecting member 5 are respectively connected to the corresponding door frame columns, the connecting line of the ends of the first connecting member 2, the second connecting member 3, the third connecting member 4, and the fourth connecting member 5 is a parallelogram or a rectangle.

[0048] The present implementation also provides a method for controlling the width of an aluminum alloy vehicle door frame structure, using the aluminum alloy vehicle door frame structure width control device of the present invention, comprising the following process:

[0049] According to the door frame structure and width dimension requirements, the aluminum alloy vehicle door frame structure width control device is installed between the two upright posts of the door frame;

[0050] Adjust the lengths of the first connecting member 2, the second connecting member 3, the third connecting member 4, and the fourth connecting member 5, and weld the aluminum plate 9 to the corresponding door frame column to form a rigid constraint, so that the above-mentioned aluminum alloy body door frame structure width control device is fixed between the door frame structures to form a rigid constraint, ensuring that the door width dimension during the door frame installation and welding process meets the standard requirements;

[0051] After the door frame assembly welding is completed, the aluminum plate 9 is removed from the door frame column, and the aluminum alloy vehicle body door frame structure width control device is removed.

[0052] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A width control device for an aluminum alloy vehicle door frame structure, characterized in that: include: A frame structure, a first connecting member and a second connecting member located on one side of the frame structure, and a third connecting member and a fourth connecting member located on the other side of the frame structure, wherein the first connecting member, the second connecting member, the third connecting member and the fourth connecting member are all adjustable in length and have aluminum plates detachably connected to their ends; The first connecting member and the second connecting member are used for welding and fixing to the column on one side of the door frame through the corresponding aluminum plates, and the third connecting member and the fourth connecting member are used for welding and fixing to the aluminum alloy column on the other side of the door frame through the corresponding aluminum plates.

2. The aluminum alloy vehicle door frame structure width control device according to claim 1, characterized in that: The frame structure is rectangular, the first connecting member and the second connecting member are located on one side of the rectangular frame structure, and the third connecting member and the fourth connecting member are located on the other side of the rectangular frame structure.

3. The aluminum alloy vehicle door frame structure width control device according to claim 2, characterized in that: A reinforcing rod is connected in the middle of the rectangular frame structure, and the reinforcing rod and the connecting rod of the frame structure divide the interior of the frame structure into a plurality of triangular areas.

4. The aluminum alloy vehicle door frame structure width control device according to claim 1, characterized in that: The frame structure is made of aluminum alloy and is formed by welding aluminum alloy pipes.

5. The aluminum alloy vehicle door frame structure width control device according to any one of claims 1 to 4, characterized in that: The first connecting member, the second connecting member, the third connecting member and the fourth connecting member have the same structure and all include: A screw sleeve, an adjusting screw, a connecting plate and an aluminum plate. The screw sleeve is used to be fixed inside the frame structure. One end of the adjusting screw is threadedly connected to the screw sleeve, and the other end of the adjusting screw is connected to the connecting plate. The connecting plate is connected to the aluminum plate, and the aluminum plate is used to be welded and fixed to the aluminum alloy column of the door frame.

6. The aluminum alloy vehicle door frame structure width control device according to claim 5, characterized in that: The screw sleeve is inserted into the connecting rod of the frame structure, and the screw sleeve is fixed to the connecting rod by bolts or screws; or, the screw sleeve is inserted into the connecting pipe of the frame structure, and the screw sleeve is fixed to the connecting pipe by bolts or screws.

7. The aluminum alloy vehicle door frame structure width control device according to claim 5, characterized in that: The connecting plate is a steel plate, and the other end of the adjusting screw is fixed to the connecting plate by welding.

8. The aluminum alloy vehicle door frame structure width control device according to claim 5, characterized in that: The aluminum plate is fixedly connected to the connecting plate by bolts or screws.

9. The aluminum alloy vehicle door frame structure width control device according to any one of claims 1 to 4, characterized in that: After the first connecting member, the second connecting member, the third connecting member and the fourth connecting member are respectively connected to the corresponding door frame columns, the connecting line of the ends of the first connecting member, the second connecting member, the third connecting member and the fourth connecting member forms a parallelogram or a rectangle.

10. A method for controlling the width of an aluminum alloy vehicle door frame structure, characterized in that: The aluminum alloy vehicle door frame structure width control device according to any one of claims 1 to 9 comprises the following process: According to the door frame structure and width dimension requirements, the aluminum alloy vehicle door frame structure width control device is installed between the two upright posts of the door frame; Adjust the lengths of the first connecting member, the second connecting member, the third connecting member, and the fourth connecting member, and weld and fix the aluminum plate to the corresponding door frame column to form a rigid constraint; After the door frame assembly welding is completed, the aluminum plate is removed from the door frame column, and the aluminum alloy body door frame structure width control device is removed.

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