Adjustment-free device and method for vehicle body cross beam set

Abstract

The invention discloses an adjustment-free device and method for a vehicle body cross beam set, solves the problem that the size and straightness of a first opening of a cross beam are out of tolerance due to large deformation of the cross beam in the welding process of the cross beam and an edge beam in the prior art, and has the beneficial effects that the position relation between second openings of the cross beam is guaranteed, and adjustment and repair of the cross beam are avoided. According to the specific scheme, the adjustment-free device for the vehicle body cross beam set comprises a plurality of tool pieces capable of being installed at the position of the vehicle body cross beam set, all the tool pieces can be arranged on the side portion of the cross beam set and stretch across a plurality of cross beams, at least one side of each tool piece is bent to enhance the structural strength, and each tool piece is provided with at least two first open holes; the distance between every two adjacent first open holes in the same side of the tool piece or the distance between every two first open holes in the diagonal line is the same as the distance between the corresponding second open holes of the cross beam set, and fasteners penetrate through the second open holes of the cross beams and the corresponding first open holes of the tool piece to be locked.

Description

Technical Field

[0001] The invention relates to the field of rail transportation, and in particular to a device and method for adjusting-free repair of a vehicle body cross beam assembly. Background Art

[0002] The statements in this section merely provide background information related to the present invention and do not necessarily constitute prior art.

[0003] In the field of rail transportation, the assembly and welding process of stainless steel car body chassis needs to be based on the requirements of the design drawings. Figure 1 As shown, 20 to 25 cross beams 2 are installed on each vehicle, each cross beam has about 4 to 5 eyelets (second openings), and the tolerance requirement for the lateral, longitudinal and diagonal dimensions of such eyelets is 1.5 mm. The multiple eyelets on the multiple cross beams are used to install the equipment on the vehicle body.

[0004] Therefore, after the installation of the beam, it is necessary to check the eyelet size and the straightness of the beam itself. Due to the large amount of welding between the beam 2 and the side beam 1 and the large amount of heat input, the beam 2 is deformed after welding, resulting in the eyelet size and beam straightness being out of tolerance. The out-of-tolerance of the eyelet size and beam straightness (changing the distance between the two adjacent eyelets) affects the normal installation of the equipment. After such an out-of-tolerance, the beam needs to be adjusted. Due to the rigidity of the stainless steel beam, the adjustment is very difficult. In the prior art, it is necessary to use hammering adjustment and lowering fire adjustment at the same time during the adjustment. After the adjustment is completed, it is necessary to clean the oxidation color caused by the lowering fire, and passivate the hammering position and the lowering fire position.

[0005] The inventors found that the above method has the following disadvantages:

[0006] 1) Each car needs to have multiple beams adjusted and repaired. Although the adjustment can basically meet the installation requirements of the equipment, it will affect the overall quality of the rail transit car body.

[0007] 2) It takes about 20 minutes to adjust each beam, and the hammering time is an average of 10 minutes. After the adjustment, it takes 10 minutes to clean the oxidation color and 10 minutes to passivate. Each vehicle needs to adjust an average of 10 beams, which takes a total of 500 minutes, or about 8.3 hours.

[0008] 3) Because the stainless steel beam is very rigid and the adjustment workload is large, when one staff member is adjusting, another staff member is required to use an infrared thermometer to measure the temperature. In principle, the adjustment temperature shall not exceed 700°C; if the temperature exceeds this temperature, air cooling, water cooling and other methods are required to cool it down to avoid staying in this temperature zone for a long time. For this reason, a staff member is required to use air ducts to carry out air cooling operations; after the adjustment is completed, one person is required to hammer it to eliminate stress, so multiple employees are required to operate at the same time.

[0009] 4) During the process of adjusting and repairing the crossbeam, the high temperature changes the composition of the stainless steel in the crossbeam, making the stainless steel crossbeam prone to corrosion, which in turn affects the quality of the stainless steel car body. Summary of the invention

[0010] In view of the shortcomings of the prior art, the first purpose of the present invention is to provide a device for adjusting the cross beam assembly of a vehicle body without requiring adjustment, so as to solve the problem that the cross beam eyelet size does not meet the quality requirements due to welding deformation after welding.

[0011] In order to achieve the above object, the present invention is implemented through the following technical solutions:

[0012] A device for non-adjustment repair of a vehicle body cross beam group, comprising a plurality of tooling parts that can be installed at the vehicle body cross beam group, each tooling part can be placed at the side of the cross beam group and arranged across a plurality of cross beams, at least one side of the tooling part is bent to enhance the structural strength, the tooling part is provided with at least two first openings, the distance between two adjacent first openings on the same side of the tooling part or the distance between two first openings on a diagonal line is the same as the distance between the corresponding second openings of the cross beam group, a fastener passes through the second opening of the cross beam and is locked with the corresponding first opening of the tooling part; or a connector is inserted into the second opening of the cross beam and the first opening corresponding to the tooling part, and the tooling part is connected to the cross beam; the fastener or the connector is inserted into the first opening and the second opening to reduce the deformation of the second opening;

[0013] The second opening is used for the installation of subsequent equipment, and a suitable tooling piece is selected according to the usage of the second opening in the beam group.

[0014] The device as described above, taking into account that multiple equipment will be installed at the crossbeam group later, the device includes multiple tooling parts, each of which is bent to enhance the strength of the tooling part to avoid deformation of the tooling part during the welding process of the crossbeam and the side beam; the first opening of the tooling part corresponds to the opening position of the equipment to be installed later, and in order to avoid deformation of the crossbeam corresponding to the second opening, the tooling part can be connected to the crossbeam and occupy the second opening of the crossbeam through fasteners or connectors, so that in the subsequent welding process of the side beam and the crossbeam, the distance between two adjacent second openings is effectively limited by the tooling part, even if the second opening is deformed during the welding process, the shape of the second opening will be effectively limited during the cooling process due to the limiting action of the fasteners or connectors.

[0015] The above-mentioned device for non-adjustment repair of a vehicle body cross beam group, considering that some equipment is in the shape of a long strip, is arranged in a direction perpendicular to the cross beam, the tooling piece is in the shape of a long strip, the tooling piece is arranged perpendicularly to the cross beam in the cross beam group, the tooling piece is bent upward, the first opening is arranged on the first side surface of the tooling piece, and the first side surface is in contact with the cross beam in the cross beam group;

[0016] Taking into account the different distances between some vehicle body beams, some equipment needs to be arranged across multiple beams. The tooling piece spans three, four or five beams arranged in sequence in the beam group, and the number of first openings of the tooling piece is at least two.

[0017] The above-mentioned device for non-adjustment repair of a vehicle body cross beam assembly, wherein the tooling piece further comprises a second side surface, the second side surface is arranged perpendicular to or intersecting with the first side surface, and the width of the first side surface of the tooling piece along the length direction of the cross beam is greater than the width of the second side surface;

[0018] The width of the first side surface of the tooling piece is 6-10 times the diameter of the first opening, so as to ensure the structural strength of the tooling piece.

[0019] In the above-mentioned device for non-adjustment repair of a vehicle body cross beam assembly, the tooling piece is in the shape of a plate, has a first side surface, is bent upward at the end side of the first side surface, and is provided with the first openings at the four corners of the first side surface of the tooling piece, so as to meet the equipment's requirements for the distance between the horizontal and vertical first openings and the first openings on the diagonal line;

[0020] The length of the first side surface along the length direction of the beam is greater than the distance between two adjacent second openings on the same beam of the beam group, and the first side surface is arranged across multiple beams.

[0021] The above-mentioned device for non-adjustment repair of a vehicle body cross beam group, wherein the tooling part further comprises a second side surface connected to the first side surface, the first side surface is arranged perpendicular to or intersecting with the second side surface, and the second side surface is arranged across a plurality of cross beams in the cross beam group;

[0022] Along the direction perpendicular to the beam, the width of the second side surface is smaller than that of the first side surface, and the width of the second side surface is 1 / 40-1 / 30 of the width of the first side surface. The second side surface bent relative to the first side surface also facilitates the staff to carry heavier tooling parts.

[0023] As described above, a device for adjusting-free repair of a vehicle body cross beam group, in order to ensure the strength of the tooling piece along the direction perpendicular to the cross beam, second side surfaces are respectively arranged on both sides of the first side surface of the tooling piece, the second side surfaces are arranged perpendicular to or intersecting with the first side surfaces, and the second side surfaces are arranged across multiple cross beams in the cross beam group.

[0024] In the above-mentioned device for adjusting-free repair of a vehicle body cross beam assembly, a plurality of weight-reducing holes are provided on the first side of the tooling piece, so as to reduce the mass of the tooling piece while ensuring the structural strength of the tooling piece, thereby facilitating the workers to install or remove the tooling piece.

[0025] In the above-mentioned device for non-adjustment repair of a vehicle body cross beam assembly, considering that there are structural parts between some cross beams, it is impossible to install a plate-shaped tooling part, and the tooling part is a U-shaped structural part, the tooling part includes a first section, a second section and a third section connected in sequence, the second section is vertically connected to the first section and the third section respectively, and the two ends of the first section and the two ends of the third section are respectively provided with the first openings; the spacing between the first section and the third section in the U-shaped tooling part is set to effectively separate the structural parts at the cross beam;

[0026] The second section is arranged perpendicular to the beams in the beam group, the first section and the third section are arranged along the length direction of the beams, and the first section and the third section are respectively placed above two adjacent beams or arranged at intervals from the beams.

[0027] The above-mentioned device for adjusting-free repair of a vehicle body cross beam assembly, wherein the cross-sections of the first section, the second section and the third section are L-shaped or U-shaped respectively;

[0028] Both ends of the first section and the third section, where the first opening is arranged, are flat plates.

[0029] In the above-mentioned device for adjusting-free repair of a vehicle body cross beam group, the lengths of the first and third sections are greater than the distance between two adjacent second openings on the same cross beam of the cross beam group, and the widths of the first and third sections are less than the width of the same cross beam.

[0030] In the above-mentioned device for adjusting-free repair of a vehicle body cross beam assembly, the fastener passes through the first opening and the second opening of the cross beam and is then locked by a fastening nut;

[0031] The diameter of the first opening is the same as the diameter of the second opening, and the outer diameter of the connecting member is matched with the diameter of the first opening.

[0032] In a second aspect, the present invention further provides a method for free-adjustment repair of a vehicle body cross beam assembly, which uses the device for free-adjustment repair of a vehicle body cross beam assembly, and includes the following contents:

[0033] Assemble the crossbeam when the stainless steel body chassis is reversed;

[0034] Spot weld the cross beam and the side beam to preliminarily fix the cross beam;

[0035] Making the tooling parts;

[0036] Select appropriate tooling parts according to the installation position of the equipment on the beam group;

[0037] The determined tooling piece is placed on the side of the beam group, and the fastener is passed through the second opening of the beam and the first opening corresponding to the tooling piece and locked; or the connecting piece is inserted into the second opening of the beam and the first opening corresponding to the tooling piece, and the tooling piece is welded to the beam;

[0038] After the fixture parts are fixed, the cross beams and side beams are welded;

[0039] After the crossbeam welding is completed, keep the tooling fixed and proceed with the subsequent installation of the chassis planking and parts;

[0040] Once all chassis welds have been installed, the tooling parts can be removed and reused.

[0041] The beneficial effects of the present invention are as follows:

[0042] 1) The present invention takes into account that multiple devices will be installed at the crossbeam group later, and the device includes multiple tooling parts. Specifically, the tooling parts can be reasonably selected according to the installation position of the equipment on the crossbeam. The tooling parts can be connected to the crossbeam and occupy the second opening of the crossbeam through fasteners or connectors. In this way, during the subsequent welding process of the side beam and the crossbeam, the distance between two adjacent second openings is effectively limited by the tooling parts. Even if the second opening is deformed during the welding process, the shape of the second opening will be effectively limited during the cooling process due to the limiting effect of the fasteners or connectors, thereby ensuring the distance requirement between the two adjacent second openings. This overcomes the problem that after the stainless steel subway car body frame crossbeam is welded, the crossbeam is deformed, resulting in the size of the second opening of the crossbeam being out of tolerance and requiring unloading and adjustment, thereby achieving the effect of no adjustment after the crossbeam is welded.

[0043] 2) In the present invention, the tooling can be installed at the appropriate position of the beam, which effectively solves the problem that the beam eyelet size does not meet the quality requirements due to welding deformation after welding, realizes the stainless steel frame beam without fire adjustment, and avoids the problem of reduced corrosion resistance of the stainless steel beam caused by fire adjustment. After the improvement, each vehicle saves 8.3 hours of work time. Calculated based on the monthly output of 13 vehicles, about 8.3×13=108 hours can be saved, which greatly improves work efficiency.

[0044] 3) In the present invention, each tooling part is bent to enhance the strength of the tooling part and avoid deformation of the tooling part during the welding process of the crossbeam and the side beam; through the provision of the device, there is no need to perform fire-down adjustment on the crossbeam, thus avoiding damage to the structure of the stainless steel body during the fire-down adjustment, thereby improving the anti-corrosion effect and physical quality of the stainless steel body crossbeam.

[0045] 4) In the present invention, the long strip tooling piece is arranged perpendicularly to the beam, and the tooling piece spans across multiple beams, thereby ensuring the distance requirement between two or three first openings of the long strip equipment at the beam; the long strip tooling piece is provided with a first side surface and a second side surface, and the width of the first side surface is greater than the width of the second side surface, thereby ensuring the structural strength of the tooling piece and controlling the weight of the tooling piece.

[0046] 5) The plate-shaped tooling parts in the present invention have a reasonable structural arrangement, and the first side of the tooling parts can cover multiple beams, thereby meeting the distance requirements for multiple second openings at two adjacent beams, thereby ensuring the distance between the first horizontal openings at the four corners of a rectangle or square, the distance between the first vertical openings, and the distance between the first openings on the diagonal lines, ultimately meeting the installation requirements of the equipment.

[0047] 6) The U-shaped tooling parts in the present invention have a reasonable structural arrangement, which fully takes into account that some structural parts at the crossbeams occupy the space between the crossbeams and that plate-shaped tooling parts cannot be installed. In this way, the structural parts at the crossbeams are effectively separated by the first section, the second section and the third section connected in sequence, and the distance requirements between the first openings at corresponding positions are guaranteed.

[0048] 7) The method for exempting the crossbeam group from adjustment in the present invention selects appropriate tooling parts according to the installation position of the equipment in the crossbeam group, that is, the positional relationship requirements between the first openings, and places the tooling parts on the side of the crossbeam group. The first opening and the second opening are connected by fasteners, or the connecting parts are inserted into the first opening and the second opening. In this way, the space of the second opening is occupied by the fasteners or the connecting parts, and the distance between the two adjacent second openings used for the installation of the equipment is ensured by the tooling parts, thereby avoiding deformation of the second openings during welding, or the distance between the second openings cannot meet the installation requirements of the equipment. After welding, there is no need to adjust the crossbeam, which effectively improves the manufacturing efficiency of the vehicle body. BRIEF DESCRIPTION OF THE DRAWINGS

[0049] 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.

[0050] Figure 1 It is a schematic diagram of the connection between the cross beam and the side beam in the prior art.

[0051] Figure 2 It is a front view of a first side surface of a long strip tooling member in a device for adjusting-free repair of a vehicle body cross beam assembly according to one or more embodiments of the present invention.

[0052] Figure 3 It is a side view of a long strip tooling part in a device for adjusting-free repair of a vehicle body cross beam assembly according to one or more embodiments of the present invention.

[0053] Figure 4 It is a front view of a first side surface of a plate-shaped tooling member in a device for adjusting-free repair of a vehicle body cross beam assembly according to one or more embodiments of the present invention.

[0054] Figure 5 The present invention is a side view of a plate-shaped tooling member in a device for adjusting-free repair of a vehicle body cross beam assembly according to one or more embodiments of the present invention.

[0055] Figure 6 It is a schematic diagram of the arrangement of a U-shaped tooling part in a device for adjusting-free repair of a vehicle body cross beam assembly according to one or more embodiments of the present invention.

[0056] Figure 7 It is a schematic diagram of a fastener passing through a first opening and a second opening in a device for adjusting-free repair of a vehicle body cross beam assembly according to one or more embodiments of the present invention.

[0057] In the figure: the distances or sizes between parts are exaggerated to show the positions of various parts, and the schematic diagram is for reference only.

[0058] Wherein: 1. side beam, 2. cross beam, 3. second opening, 4. first opening, 5. long strip tooling, 6. plate tooling, 7. U-shaped tooling, 8. tooling, 9. fastening nut, 10. gasket, 11. fastening bolt;

[0059] 7-1. The first paragraph, 7-2. The second paragraph, 7-3. The third paragraph;

[0060] 8-1. The first side of the tooling part, 8-2. The second side of the tooling part, 8-3. The weight-reducing hole. DETAILED DESCRIPTION

[0061] 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.

[0062] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present invention. As used herein, unless otherwise explicitly stated in the present invention, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "include" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof;

[0063] As introduced in the background technology, in the prior art, it takes a long time to adjust the crossbeam due to large deformation during the welding process of the crossbeam and the side beam, resulting in out-of-tolerance size and straightness of the first opening of the crossbeam, which affects the quality of the stainless steel body. In order to solve the above technical problems, the present invention proposes a device for free adjustment of the body crossbeam group.

[0064] Embodiment 1

[0065] In a typical embodiment of the present invention, a device for non-adjustment repair of a vehicle body cross beam group includes a plurality of tooling pieces 8 that can be installed at the vehicle body cross beam group, each tooling piece 8 can be placed on the side of the cross beam group and arranged across a plurality of cross beams 2, at least one side of the tooling piece 8 is bent to enhance the structural strength, the tooling piece is provided with at least two first openings 4, the distance between two adjacent first openings 4 on the same side of the tooling piece or the distance between two first openings on a diagonal line is the same as the distance between the corresponding second openings of the cross beam group, a fastener passes through the second opening 3 of the cross beam and is locked with the corresponding first opening 4 of the tooling piece; or a connecting piece is inserted into the second opening of the cross beam and the first opening corresponding to the tooling piece, and the tooling piece 8 is welded to the cross beam 2 or connected by an adhesive;

[0066] The second opening is used for the installation of subsequent equipment, and a suitable tooling piece 8 is selected according to the usage of the second opening in the beam group (the requirements of the equipment installation for the second opening).

[0067] In this embodiment, the first option of the tooling piece is a long strip tooling piece. Considering that some equipment is long strips, they are arranged in a direction perpendicular to the beam. Figure 2 As shown, the tooling piece is in the shape of a long strip, the tooling piece is vertically arranged with the crossbeam in the crossbeam group, the tooling piece is bent upward, the first opening is arranged on the first side surface 8-1 of the tooling piece, and the first side surface 8-1 is in contact with the crossbeam 2 in the crossbeam group;

[0068] The length of the long strip tooling piece is determined according to the length of the equipment, that is, the number of beams spaced apart by the equipment. The tooling piece can span three, four or five beams arranged in sequence in the beam group. In this way, the number of first openings in the tooling piece is at least two, and can be two or three. In order to ensure the structural strength of the long strip tooling piece, the end side of the tooling piece is arranged to extend beyond the edgemost beam.

[0069] Specifically, the tooling piece also includes a second side surface 8-2, and the second side surface 8-2 is arranged perpendicular to or intersecting with the first side surface 8-1. Preferably, Figure 3 As shown, the second side surface is vertically connected to the first side surface, and along the direction perpendicular to the crossbeam, the length of the first side surface is the same as the length of the second side surface; along the length direction of the crossbeam, the width of the first side surface of the tooling piece is greater than the width of the second side surface;

[0070] In this embodiment, for the long strip-shaped tooling piece 5, the width of the first side surface of the tooling piece is 6-10 times the diameter of the first opening, so as to ensure the structural strength of the tooling piece.

[0071] In addition, to avoid deformation of the first opening in the long strip tooling piece, the first opening is located on the side of the first side of the tooling piece away from the second side, that is, the distance between the first opening and the connection between the second side and the first side is greater than the distance between the first opening and the other side of the first side.

[0072] It is easy to understand that the provision of the long strip tooling piece ensures the distance requirement between two or three first openings of the long strip equipment at the beam, and the long strip tooling piece is also convenient for workers to carry it to the beam for installation or removal.

[0073] In some other examples, the tooling piece is in a plate shape to form a plate-shaped tooling piece 6, the tooling piece has a first side surface 8-1, and the tooling piece is bent upward at the end side of the first side surface, referring to Figure 4 As shown, the first side surface of the tooling piece is provided with first openings at its four corners, respectively, so as to meet the equipment's requirements for the distance between the horizontal and vertical first openings and the first openings on the diagonal line;

[0074] Specifically, the first side surface 8-1 can be a rectangle or other shapes, as long as the four first openings arranged thereon constitute four points of a quadrilateral, the length of the first side surface along the length direction of the beam is greater than the distance between two adjacent second openings on the same beam of the beam group, and the first side surface is arranged across multiple beams.

[0075] Of course, in some examples, if the device is large in size, it may need to be connected to the six second openings of the beam, then the first side is provided with corresponding six first openings, and the first side covers the six first openings in the three beams; considering that the tooling is plate-shaped, along the direction perpendicular to the beam, the end side of the first side may not exceed the side of the beam.

[0076] In order to improve the structural strength of the plate-shaped tooling, the tooling also includes a second side surface 8-2 connected to the first side surface, the second side surface is arranged along a direction perpendicular to the crossbeam, the first side surface is arranged perpendicularly or intersecting with the second side surface, and the second side surface is arranged across multiple crossbeams in the crossbeam group. The number of crossbeams spanned by the first side surface and the second side surface is determined according to the installation position of the equipment;

[0077] It is easy to understand that along the direction perpendicular to the beam, the width of the second side surface is smaller than the width of the first side surface. Since the plate-like tooling parts are heavier and are not easily deformed, the width of the second side surface is 1 / 40-1 / 30 of the width of the first side surface. The second side surface bent relative to the first side surface also facilitates the staff to carry the heavier tooling parts.

[0078] In other examples, to ensure the strength of the tooling along the direction perpendicular to the beam, refer to Figure 5 As shown, second side surfaces are respectively arranged on both sides of the first side surface of the tooling piece, the second side surfaces are arranged perpendicular to or intersecting with the first side surface, and the second side surfaces are arranged across multiple beams in the beam group.

[0079] It is easy to understand that the first side of the tooling piece is provided with a plurality of weight-reducing holes 8-3, and the shape of the weight-reducing holes can be rectangular, circular, elliptical or other shapes, without mandatory restrictions. The weight of the tooling piece can be reduced while ensuring the structural strength of the tooling piece, so as to facilitate the staff to install or remove the tooling piece.

[0080] Considering that there are structural parts between some beams, it is impossible to install the plate-shaped fixture parts. The fixture parts are U-shaped structural parts to form U-shaped fixture parts 7, refer to Figure 6 As shown, the tooling piece includes a first section 7-1, a second section 7-2 and a third section 7-3 connected in sequence, the second section is vertically connected to the first section and the third section respectively, the lengths of the first section and the third section are the same, and first openings are respectively provided at both ends of the first section and both ends of the third end; the spacing distance between the first section and the third section in the U-shaped tooling piece is set to effectively separate the structural members at the crossbeam;

[0081] Specifically, the second section is arranged perpendicular to the beams in the beam group, the first section and the third section are arranged along the length direction of the beams, the first section and the third section are respectively placed above two adjacent beams, or the first section and the third section are arranged with beams spaced apart.

[0082] It is easy to understand that the cross-sections of the first section, the second section and the third section are L-shaped or U-shaped respectively to ensure the structural strength of the first section and the third section; the two ends of the first section and the third section, i.e., the first opening is set at a flat plate, i.e., space is left on both sides of the first opening for the installation of the fastening nut at the first opening.

[0083] The lengths of the first and third sections are greater than the distance between two adjacent second openings at the same beam of the beam group, the widths of the first and third sections are less than the widths of the beams, and the width of the second section may be the same as that of the first and third sections.

[0084] It is easy to understand that reference Figure 7 As shown, a fastener such as a fastening bolt 11 passes through the second opening of the beam and the first opening corresponding to the tooling part, and then a gasket 10 is set and locked by a fastening nut 9; in addition, the diameter of the first opening is the same as the diameter of the second opening, and the outer diameter of the connecting member is adapted to the diameter of the first opening. The connecting member can specifically be a connecting rod, and the connecting rod has a set length.

[0085] For the above-mentioned tooling parts, no matter what the structural form of the tooling parts is, in this embodiment, the material of the tooling parts is preferably relatively light aluminum tooling parts, and the thickness of the tooling parts is greater than or equal to 4 mm to ensure the strength of the tooling parts and avoid deformation during the welding process of the cross beam and the side beam.

[0086] It is easy to understand that, for different vehicle bodies, the positions of the tooling parts set at the crossbeam group may be different because the equipment to be installed and the positions of the equipment may be different; the structures of the tooling parts at the crossbeam groups of different vehicle bodies may be the same or different. Some vehicle bodies may require multiple long strip tooling parts or multiple plate-shaped tooling parts or multiple U-shaped tooling parts to meet the use requirements, some vehicle bodies may require both long strip tooling parts and plate-shaped tooling parts, some vehicle bodies may require long strip tooling parts and U-shaped tooling parts, some vehicle bodies may require a combination of plate-shaped tooling parts and U-shaped tooling parts, and some vehicle bodies may require all three types of tooling parts. Reasonable selection of tooling parts should be made according to the specific circumstances.

[0087] The device provided in this embodiment takes into account that multiple equipment will be installed at the beam group later, and the device includes multiple tooling parts. Each tooling part is bent to enhance the strength of the tooling part to avoid deformation of the tooling part during the welding process of the beam and the side beam. The first opening of the tooling part corresponds to the opening position of the equipment to be installed later. In order to avoid deformation of the beam corresponding to the second opening, the tooling part can be connected to the beam and occupy the second opening of the beam through fasteners or connectors. In this way, during the subsequent welding process of the side beam and the beam, the distance between two adjacent second openings is effectively limited by the tooling part. Even if the second opening is deformed during the welding process, the shape of the second opening will be effectively limited during the cooling process due to the limiting action of the fasteners or connectors.

[0088] Embodiment 2

[0089] This embodiment provides a method for free-adjustment repair of a vehicle body cross beam assembly, using a device for free-adjustment repair of a vehicle body cross beam assembly as described in the first embodiment, including the following contents:

[0090] Assemble the crossbeam when the stainless steel body chassis is reversed;

[0091] Spot weld the cross beam and the side beam to preliminarily fix the cross beam;

[0092] The tooling parts are made according to the equipment to be installed on the vehicle body. The tooling parts can be long strip tooling parts, plate tooling parts or U-shaped tooling parts;

[0093] Select appropriate tooling parts according to the installation position of the equipment on the beam group;

[0094] The determined tooling piece is placed on the side of the beam group, and the fastening bolt is passed through the first opening and the second opening corresponding to the beam and is locked by the fastening nut; or the connecting piece is inserted into the second opening of the beam and the first opening corresponding to the tooling piece, and the tooling piece is welded to the beam;

[0095] After the fixture parts are fixed, the cross beams and side beams are welded;

[0096] After the crossbeam welding is completed, keep the tooling fixed and proceed with the subsequent installation of the chassis planking and parts;

[0097] Once all chassis welds have been installed, the tooling parts can be removed and reused.

[0098] In this way, in the method provided in this embodiment, the tooling parts are placed on the side of the crossbeam group, and the distance between the second openings is limited by the first opening to ensure the distance between the second openings used for equipment installation. Even if the crossbeam is deformed during the welding process with the side beam, the distance between the second openings used to install the equipment is guaranteed, so that there is no need to adjust the crossbeam after welding, thereby avoiding the impact of the fire adjustment on the quality of the vehicle body and helping to improve the manufacturing efficiency of the vehicle body.

[0099] 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 device for non-adjustment repair of a vehicle body cross beam assembly, characterized in that: The invention comprises a plurality of tooling parts which can be installed at the cross beam group of the vehicle body, each tooling part can be placed at the side of the cross beam group and arranged across the plurality of cross beams, at least one side of the tooling part is bent to enhance the structural strength, the tooling part is provided with at least two first openings, the distance between two adjacent first openings on the same side of the tooling part or the distance between two first openings on the diagonal line is the same as the distance between the corresponding second openings of the cross beam group, the fastener passes through the second opening of the cross beam and is locked with the corresponding first opening of the tooling part; or the connecting part is inserted into the second opening of the cross beam and the first opening corresponding to the tooling part, and the tooling part is connected to the cross beam; the fastener or the connecting part is inserted into the first opening and the second opening to reduce the deformation of the second opening; Select the appropriate tooling piece according to how the second opening in the beam assembly is used.

2. The device for adjusting and repairing a vehicle body cross beam assembly according to claim 1, characterized in that: The tooling piece is in the shape of a long strip, the tooling piece is arranged perpendicularly to the crossbeams in the crossbeam group, the tooling piece is bent upward, the first opening is arranged on the first side surface of the tooling piece, and the first side surface is in contact with the crossbeams in the crossbeam group; The tooling piece spans three, four or five beams sequentially arranged in the beam group.

3. The device for adjusting and repairing a vehicle body cross beam assembly according to claim 2, characterized in that: The tooling piece further includes a second side surface, the second side surface is arranged perpendicular to or intersecting with the first side surface, and the width of the first side surface of the tooling piece along the length direction of the crossbeam is greater than the width of the second side surface; The width of the first side surface of the tooling piece is 6-10 times the diameter of the first opening.

4. The device for adjusting and repairing a vehicle body cross beam assembly according to claim 1, characterized in that: The tooling piece is in a plate shape, and has a first side surface. The tooling piece is bent upward at the end side of the first side surface, and the first side surface of the tooling piece is respectively provided with the first openings at its four corners; The length of the first side surface along the length direction of the beam is greater than the distance between two adjacent second openings on the same beam of the beam group, and the first side surface is arranged across multiple beams.

5. The device for adjusting and repairing a vehicle body cross beam assembly according to claim 1, characterized in that: The tooling piece further includes a second side surface connected to the first side surface, the first side surface is arranged perpendicular to or intersecting the second side surface, and the second side surface is arranged across a plurality of beams in the beam group; Along a direction perpendicular to the crossbeam, the width of the second side surface is smaller than the width of the first side surface, and the width of the second side surface is 1 / 40-1 / 30 of the width of the first side surface.

6. The device for adjusting and repairing a vehicle body cross beam assembly according to claim 4, characterized in that: The second side surfaces are respectively arranged on both sides of the first side surface of the tooling part. The second side surfaces are arranged perpendicular to or intersecting with the first side surfaces, and the second side surfaces are arranged across multiple beams in the beam group.

7. The device for adjusting and repairing a vehicle body cross beam assembly according to claim 1, characterized in that: The first side surface of the tooling piece is provided with a plurality of weight-reducing holes.

8. The device for adjusting and repairing a vehicle body cross beam assembly according to claim 1, characterized in that: The tooling piece is a U-shaped structural piece, and the tooling piece includes a first section, a second section and a third section connected in sequence, the second section is vertically connected to the first section and the third section respectively, and the first openings are respectively provided at both ends of the first section and both ends of the third end; The second section is arranged perpendicular to the cross beam in the cross beam group, and the first section and the third section are arranged along the length direction of the cross beam.

9. The device for adjusting and repairing a vehicle body cross beam assembly according to claim 8, characterized in that: The cross-sections of the first section, the second section and the third section are L-shaped or U-shaped respectively; Both ends of the first section and the third section, where the first opening is arranged, are flat plates.

10. The device for adjusting and repairing a vehicle body cross beam assembly according to claim 8, characterized in that: The lengths of the first section and the third section are greater than the distance between two adjacent second openings at the same beam of the beam group, and the widths of the first section and the third section are less than the width of the same beam.

11. The device for adjusting and repairing a vehicle body cross beam assembly according to claim 1, characterized in that: The fastener passes through the first opening and the second opening of the beam and is then locked by a fastening nut; The diameter of the first opening is the same as the diameter of the second opening, and the outer diameter of the connecting member is matched with the diameter of the first opening.

12. A method for free repair of a vehicle body cross beam assembly, characterized in that: A vehicle body cross beam assembly adjustment-free repair device according to any one of claims 1 to 11 comprises the following contents: Assemble the crossbeam when the stainless steel body chassis is reversed; Spot weld the cross beam and the side beam to preliminarily fix the cross beam; Making the tooling parts; Select appropriate tooling parts according to the installation position of the equipment on the beam group; The determined tooling piece is placed on the side of the beam group, and the fastener is passed through the second opening of the beam and the first opening corresponding to the tooling piece and locked; or the connecting piece is inserted into the second opening of the beam and the first opening corresponding to the tooling piece, and the tooling piece is welded to the beam; After the fixture parts are fixed, the cross beams and side beams are welded; After the crossbeam welding is completed, keep the tooling fixed and proceed with the subsequent installation of the chassis planking and parts; Once all chassis welds have been installed, the tooling parts can be removed and reused.

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