Assembly table for manufacturing railway vehicle bottom door frame assembly

Abstract

The utility model discloses an assembly table for manufacturing a railway vehicle bottom door frame assembly. According to the assembling table, the middle supporting assembly, the supporting check block, the first clamp, the supporting block, the two baffles and the multiple second clamps are matched with one another, supporting, positioning and rigid fastening are conducted on all components of the bottom door frame assembly, the assembling precision of the bottom door frame assembly is guaranteed, and the structure is simple.

Description

Technical Field

[0001] The utility model relates to an assembly platform for manufacturing a bottom door frame component of a rail vehicle. Background Art

[0002] Rail vehicle bottom door frames are typically welded from aluminum alloy. The irregular surfaces of the individual components make clamping and fastening difficult. Aluminum alloy has a high coefficient of thermal expansion, and the alternating hot and cold conditions during welding can cause significant deformation of the components, making welding accuracy difficult and complicating subsequent operations. Utility Model Content

[0003] The utility model provides an assembly platform for manufacturing a bottom door frame assembly of a rail vehicle.

[0004] The technical solution of the utility model is as follows: an assembly platform for manufacturing a bottom door frame of a rail vehicle, comprising:

[0005] Platform, providing a level platform surface;

[0006] A middle support assembly is fixed to the platform surface, has a length direction and a width direction perpendicular to each other, a top surface of an end portion is lower than a top surface of an inner section of the end portion to form a step structure, and has a middle portion having a plurality of first grooves extending along the width direction, wherein the first grooves penetrate the middle support assembly along the width direction;

[0007] a support block, L-shaped, fixed to the platform surface, located outside the first long side of the minimum enclosing rectangle of the middle support assembly, with the free end of the first side of the support block pointing toward the middle support assembly and the free end of the second side of the support block extending upward;

[0008] a first clamp fixed to the platform surface at an area on a side of the support block facing away from the middle support assembly, providing a downward pressing force, with an action point higher than the support block and closer to the middle support assembly than the second side of the support block;

[0009] A support block, fixed on the platform surface, located outside the second longest side of the smallest enclosing rectangle of the middle support assembly;

[0010] Two baffles are fixed on the platform surface and are respectively located on the outer sides of the support block and the support block, with the connection direction of the corresponding support block and the connection direction of the corresponding support block being the length direction;

[0011] Multiple second clamps are fixed on the platform surface, wherein the second clamp of the first part is located in the area of ​​the support block facing away from the middle support assembly, providing a pressing force directed to the first clamp in the horizontal direction, and the action point is higher than the support block, and the second clamp of the second part is fixed to the outside of the two short sides of the minimum enclosing rectangle of the middle support assembly on the platform surface, providing a pressing force directed to the opposite short side in the horizontal direction, and the action point is higher than the end top surface of the middle support assembly, a second clamp is located on the side of the support block facing away from the corresponding baffle, providing a pressing force directed to the opposite baffle in the horizontal direction, and the action point is higher than the first side of the support block, and a second clamp is located on the side of the support block facing away from the corresponding baffle, providing a pressing force directed to the opposite baffle in the horizontal direction, and the action point is higher than the support block.

[0012] Optionally, the middle support assembly includes two support bars extending along the length direction and spaced apart from each other and a connecting bar connecting the two support bars, the step structure is formed at both ends of the support bar, and the first groove is formed on the support bar.

[0013] Optionally, the cross section of the first groove is V-shaped as a whole, and the cross section of the tip is in the shape of a rectangular groove.

[0014] Optionally, the bottom surface of the support bar is the first surface, the top surface of the end of the support bar is the fourth surface, the top surface of the inner section of the end of the support bar is the second surface, the surface connecting the fourth surface and the second surface is the third surface, and a second groove is provided on the third surface, the second groove extends along the width direction and passes through the support bar, the second groove is a rectangular groove, and one side groove wall of the second groove is flush with the fourth surface.

[0015] Optionally, the connecting strip extends along the width direction.

[0016] Optionally, the number of the second clamps in the second part is 4, each of which is located on the outside of one end of a support bar.

[0017] Optionally, there are multiple support blocks and they are arranged at intervals along the length direction.

[0018] Optionally, there are multiple support blocks and they are spaced apart along the length direction.

[0019] Optionally, the point of action of the first clamp can be controlled to move up and down, and the point of action of the second clamp can be controlled to move horizontally.

[0020] Optionally, the middle support assembly, the support block, the first clamp, the support block, the baffle, and the second clamp are fixed to the platform surface by welding. For example, the platform surface is provided by steel, and the middle support assembly, the support block, the first clamp, the support block, the baffle, and the second clamp are all steel structures.

[0021] This assembly table features a short manufacturing cycle, low cost, and a simple structure. The support baffles, support blocks, and baffles are machined to ensure high precision. The unique cross-section of irregular profiles is utilized for positioning, significantly reducing the number of required positioning and clamping devices and the complexity of the assembly table. This allows for high assembly precision for large and medium-sized welded parts. Furthermore, using this assembly table for assembly and welding not only ensures overall accuracy but also provides sufficient rigid positioning for materials subject to significant welding deformation, such as aluminum alloys. This effectively prevents subsequent work from becoming difficult to use due to significant deformation and resulting in heavy correction work. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 These are two views of the middle support assembly of the assembly table for manufacturing the bottom door frame of a rail vehicle according to the present invention, the upper view being the main view and the lower view being the top view.

[0023] Figure 2 yes Figure 1 A partial enlarged view of .

[0024] Figure 3 It is a top view of the assembly platform of the utility model and the bottom door frame of the rail vehicle as a whole.

[0025] Figure 4 yes Figure 3 AA section view, with some details omitted.

[0026] Figure 5 yes Figure 3 BB cross-sectional view, in which some details are omitted.

[0027] Figure 6 It is a cross-sectional view of the periphery of the second horizontal door frame.

[0028] The figures are marked as follows: 1. Support bar; 1a. First side; 1b. Second side; 1c. Third side; 1d. Fourth side; 11. First groove; 12. Second groove; 2. Connecting bar; 3. Support block; 4. First clamp; 5. Support block; 6. Second clamp; 7. Platform; 8. Baffle; 100. First bottom side beam; 200. Second bottom side beam; 300. First horizontal door frame; 400. Second horizontal door frame; 500. Bottom door funnel. DETAILED DESCRIPTION

[0029] The present invention will be further described below with reference to specific embodiments, but the protection scope of the present invention is not limited thereto.

[0030] refer to Figures 1 to 6 The utility model provides an assembly platform for manufacturing a bottom door frame of a rail vehicle, comprising: a platform 7, a middle support assembly, a support block 3, a first clamp 4, a support block 5, two baffles 8 and a plurality of second clamps 6.

[0031] The platform 7 provides a horizontal platform surface, which is the upper surface of the platform 7. The present invention describes a state in which the assembly table is placed horizontally.

[0032] Combine Figure 1 、 Figure 2 and Figure 6 The middle support assembly is fixed on the platform surface, has a length direction and a width direction perpendicular to each other, the top surface of the end portion is lower than the top surface of the inner section of the end portion to form a step structure, and the middle portion has a plurality of V-shaped first grooves 11 extending along the width direction, and the first grooves 11 pass through the middle support assembly along the width direction.

[0033] Specifically, the middle support assembly includes two support bars 1 extending along the length direction and spaced apart from each other, and a connecting bar 2 connecting the two support bars 1 , a step structure is formed at both ends of the support bar 1 , and a first groove 11 is formed on the support bar 1 .

[0034] When in use, the step structure at the end of the support bar 1 is used to place the first transverse door frame 300 and the second transverse door frame 400. Figure 6 The second transverse door frame 400 is shown, and the structure of the first transverse door frame 300 is basically the same.

[0035] refer to Figure 2 The bottom surface of the support bar 1 is the first surface 1a, the top surface of the end of the support bar 1 is the fourth surface 1d, the top surface of the inner section of the end of the support bar 1 is the second surface 1b, and the surface connecting the fourth surface 1d and the second surface 1b is the third surface 1c.

[0036] The cross-section of the second transverse door frame 400 (the cross-section is perpendicular to the width of the middle support assembly) is generally L-shaped. The bottom of the second transverse door frame 400 is placed on the fourth surface 1d of the end of the support bar 1, and the vertically extending portion of the second transverse door frame 400 abuts against the third surface 1c of the end of the support bar 1.

[0037] Combine Figure 2 、 Figure 3 and Figure 5 The bottom door funnel 500 is placed in the V-shaped first groove 11. The cross section of the bottom door funnel 500 is V-shaped. If the cross section of the bottom door funnel 500 is other shapes, the shape of the first groove 11 is adjusted to the corresponding shape.

[0038] Optionally, the cross-section of the tip of the V-shaped first groove 11 is in the shape of a rectangular groove. The first groove 11 can be obtained by machining with a milling cutter. During the machining process, the milling cutter sets a cutter groove in advance to facilitate the cutter withdrawal. If the cutter groove is not set, the milling cutter cannot machine the positioning surface at the bottom of the V-shaped part, and the cutter withdrawal process becomes complicated and easily damages the machined surface. The bottom groove of the V-shaped first groove 11 is more conducive to the natural fit of the assembled part (bottom door funnel 500) and the tooling, and the accuracy of the part assembly will not be affected by the bottom machining accuracy.

[0039] Optionally, a second groove 12 is provided on the third surface 1c, extending in the width direction and penetrating the support bar 1. The second groove 12 is a rectangular groove, and one side wall of the second groove 12 is flush with the fourth surface 1d. The second groove 12 is also provided to facilitate the retraction of the milling cutter.

[0040] Optionally, the connecting bar 2 extends along the width direction. In this embodiment, the connecting bar 2 is a square steel tube. In other embodiments, the connecting bar 2 is a round tube.

[0041] refer to Figure 3 and Figure 4 The support block 3 is L-shaped and is fixed on the platform surface. It is located outside the first long side of the minimum enclosing rectangle of the middle support assembly. The free end of the first side of the support block 3 points to the middle support assembly, and the free end of the second side of the support block 3 extends upward.

[0042] The minimum enclosing rectangle of the middle support assembly is a rectangle with the smallest area enclosing the middle support assembly in a top view.

[0043] Optionally, there are multiple supporting blocks 3 and they are spaced apart along the length direction.

[0044] In this embodiment, there are three support blocks 3, which are spaced apart. In other embodiments, the number of support blocks 3 is 2 or 4 or more. In other embodiments, the number of support blocks 3 is one and extends along the length direction.

[0045] The function of the support block 3 is to limit the bottom position of the outer boundary of the long side of the first bottom side beam 100 and support the first bottom side beam 100 .

[0046] refer to Figure 3 and Figure 4 The first clamp 4 is fixed to the area of ​​the platform surface on the side of the support block 3 facing away from the middle support assembly, providing downward pressing force, the action point is higher than the support block 3 and closer to the middle support assembly relative to the second side of the support block 3.

[0047] The first clamp 4 is used to press down the first bottom side beam 100. The first clamp 4 can be a commercially available component and can be manually or electronically driven. The first clamp 4 can be, for example, a push-pull quick clamp, a quick clamp fixture, or a quick lock, and can be a commercially available component.

[0048] refer to Figure 3 and Figure 4 The support block 5 is fixed on the platform surface and is located outside the second longest side of the minimum enclosing rectangle of the middle support assembly.

[0049] The function of the supporting block 5 is to support the second bottom side beam 200 .

[0050] Optionally, there are multiple support blocks 5 and they are spaced apart along the length direction.

[0051] In this embodiment, there are three support blocks 5, which are spaced apart. In other embodiments, there are two, four or more support blocks 5. In other embodiments, there is only one support block 5 and the support block 5 extends in the longitudinal direction.

[0052] refer to Figure 3 The two baffles 8 are fixed on the platform surface and are respectively located on the outside of the support block 3 and the support block 5 (the baffle 8 is farther away from the center of the middle support assembly than the support block 3 or the support block 5), and the connection direction with the corresponding support block 3 and the connection direction with the corresponding support block 5 are the length directions.

[0053] The baffle 8 is used to limit the first bottom side beam 100 and the second bottom side beam 200 along the length direction.

[0054] refer to Figure 3 、 Figure 4 and Figure 5 , multiple second clamps 6 are fixed on the platform surface. The second clamps 6 of the first part ( Figure 3 The second clamp 6 in the lower middle portion is located in the area of ​​the support block 5 facing away from the middle support assembly, providing a pressing force directed toward the first clamp 4 in the horizontal direction, with the action point being higher than the support block 5 .

[0055] The second clamp 6 of the first portion pushes and fixes the second bottom side beam 200 toward the first bottom side beam 100 in the horizontal direction.

[0056] The second clamp 6 of the second part is fixed to the outside of the two short sides of the minimum enclosing rectangle of the middle support assembly on the platform surface (that is, the rectangle with the smallest area enclosing the middle support assembly in the top view), providing pressing force directed to the opposite short side in the horizontal direction, and the action point is higher than the end top surface of the middle support assembly.

[0057] refer to Figure 3 and Figure 5The second clamp 6 of the second part presses against the first transverse door frame 300 and the second transverse door frame 400 toward the inside. Figure 5 The second clamp 6 of the second part of the second portion on the middle right side is blocked by the support block 3 .

[0058] The second clamp 6 of the second part cooperates with the step structure at the end of the support bar 1 to position and fasten the first transverse door frame 300 and the second transverse door frame 400.

[0059] refer to Figure 3 and Figure 5 A second clamp 6 is located on the side of the support block 3 facing away from the corresponding baffle 8, providing a pressing force directed toward the opposite baffle 8 in the horizontal direction, and the action point is higher than the first side of the support block 3. A second clamp 6 is located on the side of the support block 5 facing away from the corresponding baffle 8, providing a pressing force directed toward the opposite baffle 8 in the horizontal direction, and the action point is higher than the support block 5.

[0060] The two second clamps 6 cooperate with the baffle 8 to position and fasten the first bottom side beam 100 and the second bottom side beam 200 along the length direction. The second clamps 6 are, for example, push-pull quick clamps, quick clamps, or quick lockers, and can be commercially available.

[0061] Optionally, refer to Figure 3 There are four second clamps 6 in the second part, which are arranged one by one corresponding to the ends of the two support bars 1 and are respectively located on the side of the corresponding end of the corresponding support bar 1 facing away from the other end of the support bar 1.

[0062] Specifically, the action point of the first clamp 4 can be controlled to move up and down (thereby pressing the first bottom side beam 100 downward), and the action point of the second clamp 6 can be controlled to move horizontally (thereby pressing the second bottom side beam 200, the first transverse door frame 300 and the second transverse door frame 400 in the horizontal direction).

[0063] Optionally, the platform surface of the platform 7 is provided by steel, and the middle support assembly, support block 3, first clamp 4, support block 5, baffle 8, and second clamp 6 are all steel structures and fixed to the platform surface by welding. Specifically, Q235 steel or 40 steel can be selected.

[0064] The method of using the assembly station is as follows.

[0065] refer to Figure 3 and Figure 4 , place the first bottom side beam 100 on the first side of the support block 3 and close to the second side of the support block 3; move the second clamp 6 on the outer side of the end of the first bottom side beam 100 toward the baffle 8 on the opposite side, and press the first bottom side beam 100 against the baffle 8 in the horizontal direction; manually operate or electronically control the point of action of the first clamp 4 to move downward, and tighten the first bottom side beam 100 in the vertical direction.

[0066] The second bottom side beam 200 , the first transverse door frame 300 , the second transverse door frame 400 , and the bottom door funnel 500 are placed.

[0067] refer to Figure 3 、 Figure 5 and Figure 6 The step structure at the end of the middle support assembly cooperates with the second clamp 6 to horizontally fasten the first transverse door frame 300 and the second transverse door frame 400 in the horizontal direction.

[0068] refer to Figure 3 and Figure 4 The second clamp 6 presses the second bottom side beam 200 toward the inner side of the bottom door frame in the horizontal direction.

[0069] After welding, the first clamp 4 and the second clamp 6 are released and the bottom door frame assembly is taken out.

[0070] No matter how irregular the surface of the bottom door frame is, the assembly table can well position it rigidly and ensure the processing accuracy of the welding operation.

[0071] The various embodiments of the present invention are described in a progressive manner. The same or similar parts between the various embodiments can be referred to each other. Each embodiment focuses on the differences from other embodiments.

[0072] The scope of protection of the present invention is not limited to the above-described embodiments. Obviously, those skilled in the art may make various modifications and variations to the present invention without departing from the scope and spirit of the present invention. If such modifications and variations fall within the scope of the claims of the present invention and their equivalents, the present invention is intended to include such modifications and variations.

Claims

1. An assembly platform for manufacturing a bottom door frame of a railway vehicle, characterized in that: include: Platform, providing a level platform surface; A middle support assembly is fixed to the platform surface, has a length direction and a width direction perpendicular to each other, a top surface of an end portion is lower than a top surface of an inner section of the end portion to form a step structure, and has a middle portion having a plurality of first grooves extending along the width direction, wherein the first grooves penetrate the middle support assembly along the width direction; a support block, L-shaped, fixed to the platform surface, located outside the first long side of the minimum enclosing rectangle of the middle support assembly, with the free end of the first side of the support block pointing toward the middle support assembly and the free end of the second side of the support block extending upward; a first clamp fixed to the platform surface at an area of ​​the support block facing away from the middle support assembly, providing a downward pressing force, with the action point closer to the middle support assembly than the second side of the support block; A support block, fixed on the platform surface, located outside the second longest side of the smallest enclosing rectangle of the middle support assembly; Two baffles are fixed on the platform surface and are respectively located on the outer sides of the support block and the support block, with the connection direction of the corresponding support block and the connection direction of the corresponding support block being the length direction; Multiple second clamps are fixed on the platform surface, wherein the second clamp of the first part is located in the area of ​​the support block facing away from the middle support assembly, providing a pressing force directed to the first clamp in the horizontal direction, and the action point is higher than the support block, and the second clamp of the second part is fixed to the outside of the two short sides of the minimum enclosing rectangle of the middle support assembly on the platform surface, providing a pressing force directed to the opposite short side in the horizontal direction, and the action point is higher than the end top surface of the middle support assembly, a second clamp is located on the side of the support block facing away from the corresponding baffle, providing a pressing force directed to the opposite baffle in the horizontal direction, and the action point is higher than the first side of the support block, and a second clamp is located on the side of the support block facing away from the corresponding baffle, providing a pressing force directed to the opposite baffle in the horizontal direction, and the action point is higher than the support block.

2. The assembly table according to claim 1, characterized in that The middle support assembly includes two support bars extending along the length direction and spaced apart from each other and a connecting bar connecting the two support bars. The step structure is formed at both ends of the support bar, and the first groove is formed on the support bar.

3. The assembly table according to claim 2, characterized in that The cross section of the first groove is V-shaped as a whole, and the tip is in the shape of a rectangular groove.

4. The assembly table according to claim 2, characterized in that The bottom surface of the support bar is the first surface, the top surface of the end of the support bar is the fourth surface, the top surface of the inner section of the end of the support bar is the second surface, and the surface connecting the fourth surface and the second surface is the third surface. A second groove is provided on the third surface, and the second groove extends along the width direction and passes through the support bar. The second groove is a rectangular groove, and one side groove wall of the second groove is flush with the fourth surface.

5. The assembly table according to claim 2, characterized in that There are multiple connecting bars extending along the width direction.

6. The assembly table according to claim 2, characterized in that The number of the second clamps in the second part is 4, which are arranged in one-to-one correspondence with the ends of the two support bars and are respectively located at the side of the corresponding end of the corresponding support bar facing away from the other end of the support bar.

7. The assembly station according to claim 1, characterized in that There are multiple support blocks, which are spaced apart along the length direction.

8. The assembly station according to claim 1, wherein: There are multiple support blocks, which are spaced apart along the length direction.

9. The assembly station according to claim 1, wherein: The point of action of the first clamp can be controlled to move up and down, and the point of action of the second clamp can be controlled to move horizontally.

10. The assembly station according to claim 1, wherein: The middle support assembly, the support block, the first clamp, the support block, the baffle, and the second clamp are fixed to the platform surface by welding.

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