Manufacturing method of hopper car

Abstract

The invention provides a hopper car manufacturing method which comprises the following steps: assembling a middle beam, a cross beam, a first side beam and a second side beam to obtain a car body structure; a bottom door assembly and a bottom door opening and closing mechanism are obtained in the process of obtaining the vehicle body structure, the bottom door assembly comprises two bottom door structures, each bottom door structure comprises a bottom door body, a bottom door hinge and a hinge base, and the bottom door bodies and the bottom door hinges of the two bottom door structures are assembled respectively; the first shaft support and the second shaft support are connected with a vehicle body structure; bottom door hinges of the two bottom door structures are connected with hinge seats through connecting pins; the hinge seats of the two bottom door structures are connected with the cross beam; and a bottom door opening and closing mechanism is connected with the first shaft support and the second shaft support, and the bottom door opening and closing mechanism is connected with the bottom door bodies of the two bottom door structures. According to the technical scheme, the problem that in the prior art, the manufacturing efficiency of the hopper car is low is effectively solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of hopper cars, in particular to a manufacturing method of a hopper car. BACKGROUND

[0002] Coal hopper cars are railway freight cars used for transporting coal. The car body of a hopper car is usually in the shape of a funnel, and the bottom is provided with a discharge port, so that coal can be discharged from the bottom by gravity, improving the unloading efficiency.

[0003] In the related art, when a hopper car is manufactured, the parts of the car body structure are assembled first, then the parts of the bottom door structure are assembled on the car body structure, and then the parts of the bottom door opening and closing mechanism are assembled on the car body structure, that is, the assembly of the various structures of the hopper car needs to be carried out in sequence, resulting in low manufacturing efficiency of the hopper car. SUMMARY

[0004] The main purpose of the present application is to provide a manufacturing method to solve the problem of low manufacturing efficiency of hopper cars in the related art.

[0005] In order to achieve the above-mentioned purpose, according to one aspect of the present application, a manufacturing method of a hopper car is provided, comprising:

[0006] obtaining a center beam, a cross beam, a first side beam and a second side beam respectively, and assembling the center beam, the cross beam, the first side beam and the second side beam to obtain a car body structure;

[0007] obtaining a bottom door assembly during the process of obtaining the car body structure, the bottom door assembly comprising two bottom door structures, each bottom door structure comprising a bottom door body, a bottom door flap and a flap seat, and assembling the bottom door body and the bottom door flap of the two bottom door structures respectively;

[0008] obtaining a bottom door opening and closing mechanism during the process of obtaining the car body structure;

[0009] obtaining a first axle support and a second axle support respectively;

[0010] connecting the first axle support and the second axle support to the car body structure respectively;

[0011] connecting the bottom door flap of the two bottom door structures to the flap seat through a connecting pin;

[0012] connecting the flap seat of the two bottom door structures to the cross beam;

[0013] connecting the bottom door opening and closing mechanism to the first axle support and the second axle support, and connecting the bottom door opening and closing mechanism to the bottom door body of the two bottom door structures.

[0014] Further, the step of connecting the flap seat of the two bottom door structures to the cross beam comprises:

[0015] marking installation areas of the two bottom door structure's folding seat on the cross beam;

[0016] aligning the two bottom door structure's folding seat with the installation areas and placing the two bottom door structure's folding seat at the installation areas;

[0017] connecting the two bottom door structure's folding seat and the cross beam respectively.

[0018] Further, the step of marking installation areas of the two bottom door structure's folding seat on the cross beam comprises:

[0019] marking a first position line corresponding to a first side of each bottom door structure's folding seat and a second position line corresponding to a second side of the folding seat with the center line of the cross beam as the reference;

[0020] marking a third position line corresponding to a third side of each bottom door structure's folding seat and a fourth position line corresponding to a fourth side of the folding seat with the center line of the cross beam as the reference;

[0021] the installation areas are formed between the first position line, the second position line, the third position line and the fourth position line.

[0022] Further, the step of connecting the two bottom door structure's folding seat and the cross beam respectively comprises:

[0023] connecting the folding seat and the cross beam through a welding process;

[0024] rotating the bottom door body to perform a bottom door body rotation flexibility test;

[0025] measuring a first gap L1 between the bottom door body and the funnel back of the vehicle body structure;

[0026] measuring a second gap L2 between the bottom door body and the first side beam of the vehicle body structure;

[0027] measuring a third gap L3 between the bottom door body and the second side beam of the vehicle body structure;

[0028] when the first gap L1 meets a first preset interval, the second gap L2 meets a second preset interval, and the third gap L3 meets a third preset interval, the connection of the folding seat and the cross beam is completed.

[0029] Further, the step of connecting the first shaft support and the second shaft support with the vehicle body structure respectively comprises:

[0030] obtaining two process shaft positioning templates;

[0031] spacedly placing the two process shaft positioning templates on the support installation surface of the cross beam;

[0032] placing the process shaft on the two process shaft positioning templates;

[0033] The height of the first shaft support and the height of the second shaft support are adjusted according to the distance between the process shaft and the support mounting surface of the cross beam;

[0034] The first shaft support and the second shaft support are placed on the cross beam in a spaced manner, and the process shaft is connected with the first shaft support and the second shaft support;

[0035] The first shaft support and the cross beam are connected, and the second shaft support and the cross beam are connected.

[0036] Further, the step of connecting the bottom door opening and closing mechanism with the first shaft support and the second shaft support, and connecting the bottom door opening and closing mechanism with the bottom door bodies of the two bottom door structures includes:

[0037] A transmission shaft positioning template is obtained, and the transmission shaft positioning template is provided with a positioning arc surface;

[0038] The transmission shaft positioning template is connected with the connecting pin, and the positioning arc surface is located at one end of the transmission shaft positioning template away from the cross beam;

[0039] The height of the bottom door opening and closing mechanism is adjusted until the transmission shaft of the bottom door opening and closing mechanism is attached to the positioning arc surface;

[0040] The transmission shaft and the first shaft support and the transmission shaft and the second shaft support are connected respectively;

[0041] The first end of the first connecting rod structure of the bottom door opening and closing mechanism is connected with the double connecting lever of the bottom door opening and closing mechanism using a first connecting column, the second end of the first connecting rod structure is connected with one of the two bottom door hinges using a second connecting column, the first end of the second connecting rod structure of the bottom door opening and closing mechanism is connected with the double connecting lever of the bottom door opening and closing mechanism using a third connecting column, and the second end of the second connecting rod structure is connected with the other of the two bottom door hinges using a fourth connecting column.

[0042] Further, after the first end of the first connecting rod structure of the bottom door opening and closing mechanism is connected with the double connecting lever of the bottom door opening and closing mechanism using a first connecting column, the second end of the first connecting rod structure is connected with the bottom door hinge using a second connecting column, the first end of the second connecting rod structure of the bottom door opening and closing mechanism is connected with the double connecting lever of the bottom door opening and closing mechanism using a third connecting column, and the second end of the second connecting rod structure is connected with the bottom door hinge using a fourth connecting column, the step of connecting the bottom door opening and closing mechanism with the first shaft support and the second shaft support, and connecting the bottom door opening and closing mechanism with the bottom door bodies of the two bottom door structures includes:

[0043] The fixed frame of the eccentricity measuring ruler is attached to the first connecting column and the second connecting column, and the moving plate of the eccentricity measuring ruler is attached to the transmission shaft, and the eccentricity E is measured, and when the eccentricity E meets the fourth preset interval, the length of the first connecting rod structure is stopped adjusting and the length of the second connecting rod structure is stopped adjusting, wherein the moving plate is movably arranged on the fixed frame along the width direction of the fixed frame.

[0044] Further, after the step of attaching the fixed frame of the eccentricity measuring ruler to the first connecting column and the second connecting column, and attaching the moving plate of the eccentricity measuring ruler to the transmission shaft to measure the eccentricity E, the step of connecting the bottom door opening and closing mechanism to the first shaft support and the second shaft support, and connecting the bottom door opening and closing mechanism to the bottom door body of the two bottom door structures further includes:

[0045] Measuring the second gap L2 between the bottom door body and the first side beam, and measuring the third gap L3 between the bottom door body and the second side beam, when the second gap L2 meets the third preset interval and the third gap L3 meets the fourth preset interval, the connection of the bottom door opening and closing mechanism and the bottom door body of the two bottom door structures is completed.

[0046] Further, before the step of connecting the transmission shaft positioning template to the connecting pin, the manufacturing method of the hopper car includes:

[0047] Rotating the bottom door body to attach the bottom door body to the first side beam and the second side beam.

[0048] Further, the step of adjusting the height of the bottom door opening and closing mechanism until the transmission shaft of the bottom door opening and closing mechanism is attached to the positioning camber includes:

[0049] Placing the bottom door opening and closing mechanism on the lifting device, adjusting the position of the bottom door opening and closing mechanism so that the double connecting lever is aligned with the bottom door hinge;

[0050] Using the lifting device to drive the bottom door opening and closing mechanism to rise until the transmission shaft is attached to the positioning camber.

[0051] By applying the technical solution of this invention, a bottom door assembly and an opening / closing mechanism are obtained during the process of obtaining the vehicle body structure. After obtaining the two bottom door structures of the bottom door assembly, the bottom door body and bottom door hinge of each bottom door structure are connected respectively. After obtaining the first axle support and the second axle support, the first axle support and the second axle support are connected to the vehicle body structure respectively, which can improve the installation accuracy of the first axle support and the second axle support. The bottom door hinge and the hinge seat are connected by connecting pins, and then the hinge seat is connected to the crossbeam. Then, the bottom door opening / closing mechanism is connected to the first axle support, and the bottom door opening / closing mechanism is connected to the second axle support, and the bottom door opening / closing mechanism is connected to both bottom door bodies. That is, by obtaining the bottom door assembly and the bottom door opening / closing mechanism during the process of obtaining the vehicle body structure, and assembling the bottom door body and the bottom door hinge of the bottom door structure, compared with the prior art of sequentially installing each part of the bottom door structure and each part of the bottom door opening / closing mechanism to the vehicle body structure during the manufacturing of the vehicle body structure, the assembly time of the funnel car can be reduced. Therefore, the technical solution of this application effectively solves the problem of low manufacturing efficiency of hopper cars in related technologies. Attached Figure Description

[0052] The accompanying drawings, which form part of this application, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings:

[0053] Figure 1 A schematic flowchart of an embodiment of a method for manufacturing a funnel cart according to the present invention is shown;

[0054] Figure 2 It shows Figure 1 Step S70 of the manufacturing method of the funnel car: A schematic diagram of the process of connecting the hinge seats of the two bottom door structures to the crossbeam;

[0055] Figure 3 It shows Figure 2 Step S71 of the manufacturing method of the funnel car: A flowchart illustrating the process of marking the installation area of ​​the hinge seats of the two bottom door structures on the crossbeam.

[0056] Figure 4 It shows Figure 1 A schematic diagram of the process for manufacturing a hopper car, step S50: connecting the first axle support and the second axle support to the car body structure respectively.

[0057] Figure 5 It shows Figure 1 A schematic diagram of a partial structure of a funnel car manufactured using the method described above.

[0058] Figure 6 It shows Figure 5 A front view schematic diagram of the funnel cart;

[0059] Figure 7 A partial structure schematic view of the hopper car of Figure 6

[0060] Figure 8 A front view schematic view of the crossbeam of the hopper car of Figure 5

[0061] Figure 9 A front view schematic view of the bottom door of the hopper car of Figure 5

[0062] Figure 10 A front view schematic view of the eccentricity measuring scale of the manufacturing method of the hopper car of Figure 1

[0063] Figure 11 A partial structure schematic view of the eccentricity measuring scale of the manufacturing method of the hopper car of Figure 10

[0064] Figure 12 A front view schematic view of the assembly tool of the manufacturing method of the hopper car of Figure 1

[0065] Figure 13 A front view schematic view of the assembly tool of the manufacturing method of the hopper car of Figure 10

[0066] Figure 14 A side view schematic view of the assembly tool of the manufacturing method of the hopper car of Figure 10

[0067] Figure 15 A front view schematic view of the bottom door body, the first side beam and the second side beam of the hopper car of Figure 5

[0068] Wherein, the above-mentioned drawings include the following reference signs:

[0069] 10, car body structure; 11, middle beam; 12, crossbeam; 121, support mounting surface; 13, first side beam; 131, side beam plate; 14, second side beam; 15, hopper ridge; 16, side hopper plate; 20, bottom door assembly; 21, bottom door structure; 211, bottom door body; 212, bottom door flap; 213, flap seat; 30, bottom door opening and closing mechanism; 31, transmission shaft; 32, first connecting rod structure; 33, double lever; 34, second connecting rod structure; 35, door opening arm; 36, door closing arm; 40, first shaft support; 50, second shaft support; 60, connecting pin; 70, process shaft positioning template; 80, process shaft; 90, transmission shaft positioning template; 91, positioning camber; 100, first connecting column; 110, second connecting column; 120, third connecting column; 130, fourth connecting column; 140, eccentricity measuring scale; 141, fixed frame; 142, moving plate.​​​​​​​​​ Detailed Implementation

[0070] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present invention or its application or use. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0071] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0072] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of the invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following figures denote similar items; therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0073] like Figure 1 and Figure 5 As shown, the manufacturing method of the funnel car in this embodiment includes:

[0074] Step S10: Obtain the middle beam 11, the cross beam 12, the first side beam 13 and the second side beam 14 respectively, and assemble the middle beam 11, the cross beam 12, the first side beam 13 and the second side beam 14 to obtain the vehicle body structure 10;

[0075] Step S20: obtaining the bottom door assembly 20 in the process of obtaining the car body structure 10, the bottom door assembly 20 comprising two bottom door structures 21, each of the bottom door structures 21 comprising a bottom door body 211, a bottom door flap 212 and a flap seat 213, and assembling the bottom door body 211 and the bottom door flap 212 of the two bottom door structures 21 respectively;

[0076] Step S30: obtaining the bottom door opening and closing mechanism 30 in the process of obtaining the car body structure 10;

[0077] Step S40: obtaining the first shaft support 40 and the second shaft support 50 respectively;

[0078] Step S50: connecting the first shaft support 40 and the second shaft support 50 with the car body structure 10 respectively;

[0079] Step S60: connecting the bottom door flap 212 and the flap seat 213 of the two bottom door structures 21 through the connecting pin 60;

[0080] Step S70: connecting the flap seat 213 of the two bottom door structures 21 with the cross beam 12;

[0081] Step S80: connecting the bottom door opening and closing mechanism 30 with the first shaft support 40 and the second shaft support 50, and connecting the bottom door opening and closing mechanism 30 with the bottom door body 211 of the two bottom door structures 21.

[0082] By applying the technical scheme of the embodiment, the bottom door assembly 20 and the opening and closing mechanism are obtained in the process of obtaining the car body structure 10, and after obtaining the two bottom door structures 21 of the bottom door assembly 20, the bottom door body 211 and the bottom door flap 212 of each of the bottom door structures 21 are connected respectively. After obtaining the first shaft support 40 and the second shaft support 50, the first shaft support 40 and the second shaft support 50 are connected with the car body structure 10 respectively, which can improve the installation precision of the first shaft support 40 and the second shaft support 50. The bottom door flap 212 and the flap seat 213 are connected through the connecting pin 60, and then the flap seat 213 is connected with the cross beam 12. Then, the bottom door opening and closing mechanism 30 is connected with the first shaft support 40, and the bottom door opening and closing mechanism 30 is connected with the second shaft support 50, and the bottom door opening and closing mechanism 30 is connected with the two bottom door bodies 211. That is, by obtaining the bottom door assembly 20 and the bottom door opening and closing mechanism 30 in the process of obtaining the car body structure 10, and assembling the bottom door body 211 and the bottom door flap 212 of the bottom door structure 21, compared with sequentially installing each part of the bottom door structure 21 and each part of the bottom door opening and closing mechanism 30 to the car body structure 10 in the prior art when manufacturing the car body structure 10, the assembly time of the hopper car can be reduced. Therefore, the technical scheme of the embodiment effectively solves the problem of low hopper car manufacturing efficiency in the related art.

[0083] When the middle beam 11, the cross beam 12, the first side beam 13 and the second side beam 14 are assembled, the cross beam 12 is installed based on the lower plane of the middle beam 11, the height difference between the lower edge of the cross beam 12 and the lower plane of the middle beam 11 is controlled, and the horizontal difference of the lower edge of the cross beam 12 is controlled to be not more than a first preset horizontal difference interval. The first preset horizontal difference interval is greater than or equal to 0 mm and less than or equal to 1.5 mm, and can be 0.5 mm, 0.8 mm, 1 mm, 1.2 mm, 1.3 mm or 1.5 mm. In the embodiment, the first preset horizontal difference interval is greater than or equal to 0 mm and less than or equal to 1 mm.

[0084] Since the cross beam 12 is the basis for installing the bottom door and the bottom door opening and closing mechanism 30, and the relative position between the cross beam 12 and the bottom door and the bottom door opening and closing mechanism 30 remains unchanged after installation, that is, the height of the transmission shaft 31, the final height of the contact roller of the door opening arm 35 and the contact roller of the door closing arm 36 changes with the position of the cross beam 12 relative to the middle beam 11. Therefore, after the vehicle is manufactured, the height of the cross beam 12 relative to the rail surface and the parallelism relative to the horizontal plane are direct factors for determining whether the height of the transmission shaft 31, the height value of the contact roller of the door opening arm 35 from the rail surface and the height value of the contact roller of the door closing arm 36 from the rail surface can meet the relevant requirements. The assembly quality of the cross beam 12 is related to the selection of the positioning reference of the cross beam 12 and the upwarp value of the middle beam 11 when the vehicle body structure 10 is manufactured. Therefore, during the vehicle manufacturing process, it is necessary to determine the upwarp value of the middle beam 11 and reasonably determine the positioning reference of the cross beam 12.

[0085] When the middle beam 11 is manufactured, it is necessary to control the upwarp value of the middle beam 11, and a matching clamp and a flash welding device are used to control the deformation of the middle beam 11 to ensure that the upwarp value of the middle beam 11 is within a first preset upwarp value interval. The first preset upwarp value interval is greater than or equal to 0 and less than or equal to 3 mm.

[0086] It should be noted that the upwarp value of the middle beam 11 refers to the distance between the highest point of the middle part of the middle beam 11 and the lowest point of the middle beam 11.

[0087] When the middle beam 11, the cross beam 12, the first side beam 13 and the second side beam 14 are assembled, the positioning references of the middle beam 11 and the cross beam 12 are unified. The vertical center disc surface of the middle beam 11 is used as the positioning reference, and the upwarp value of the middle beam 11 is controlled to be within a second preset upwarp value interval by using the clamping device on the tool near the upper center disc and at the center of the middle beam 11; the upper center disc surface is used as the positioning reference in the height direction of the cross beam 12, and the cross beam 12 is positioned and assembled by using the support mounting surface 121 of the cross beam 12 to ensure that the height difference of the cross beam 12 relative to the upper center disc surface meets the preset height difference interval and the horizontal difference of the cross beam 12 in the overall length direction meets the second preset horizontal difference interval.

[0088] The second preset deflection value interval is 2±1mm. The preset height difference interval is greater than or equal to 0 and less than or equal to 2mm. The preset height difference interval is greater than or equal to 0 and less than or equal to 2mm. The second preset level difference interval is greater than or equal to 0 and less than or equal to 2mm.

[0089] The assembly work of the bottom door structure 21 is adjusted to be completed when the vehicle body is manufactured, which can solve the problem of long process rhythm caused by the assembly of the bottom door structure 21 and the bottom door opening and closing mechanism 30 in the same process, and improve the welding quality of the bottom door hinge seat 212.

[0090] Each bottom door structure 21 includes two hinge seats 213, and the two hinge seats 213 are arranged at intervals in the length direction of the cross beam 12.

[0091] The bottom door assembly 20 and the bottom door opening and closing mechanism 30 each include a plurality of bottom door assemblies 20 arranged at intervals in the length direction of the center beam, and the bottom door assembly 20 is arranged in one-to-one correspondence with the bottom door opening and closing mechanism 30.

[0092] It should be noted that the order of steps S20, S30 and S40 can be changed.

[0093] Step S10: obtaining the center beam 11, the cross beam 12, the first side beam 13 and the second side beam 14 respectively, and assembling the center beam 11, the cross beam 12, the first side beam 13 and the second side beam 14 to obtain the vehicle body structure 10, the step further comprising:

[0094] Step S11: obtaining the funnel ridge 15, and assembling the funnel ridge with the center beam 11, the funnel ridge with the first side beam 13 and the funnel ridge with the second side beam 14.

[0095] Through the above setting, the funnel ridge 15 can be obtained, and the funnel ridge is assembled with the center beam 11, the funnel ridge is assembled with the first side beam 13 and the funnel ridge is assembled with the second side beam 14 respectively to obtain the vehicle body structure 10.

[0096] As shown in Figure 2 In this embodiment, step S70: connecting the hinge seat 213 of the two bottom door structures 21 with the cross beam 12, the step comprising:

[0097] Step S71: marking the installation area of the hinge seat 213 of the two bottom door structures 21 on the cross beam 12;

[0098] Step S72: aligning the hinge seat 213 of the two bottom door structures 21 with the installation area, and placing the hinge seat 213 of the two bottom door structures 21 at the installation area;

[0099] Step S73: connecting the hinge seat 213 of the two bottom door structures 21 with the cross beam 12 respectively.

[0100] Through the above arrangement, the mounting area of the folding seat 213 can be obtained, and then the folding seat 213 can be placed at the mounting area, facilitating the connection of the folding seat 213 and the cross beam 12.

[0101] As shown in the drawings, Figure 3 In the embodiment, the step S71 of marking the mounting area of the folding seat 213 of the two bottom door structures 21 on the cross beam 12 comprises:

[0102] The step S711 comprises: taking the center line of the cross beam 12 as a reference, marking a first position line corresponding to the first side of the folding seat 213 of each bottom door structure 21 and a second position line corresponding to the second side of the folding seat 213.

[0103] The step S712 comprises: taking the center line of the middle beam 11 as a reference, marking a third position line corresponding to the third side of the folding seat 213 of each bottom door structure 21 and a fourth position line corresponding to the fourth side of the folding seat 213.

[0104] The step S713 comprises: forming the mounting area between the first position line, the second position line, the third position line and the fourth position line.

[0105] Through the above arrangement, the position of the mounting area can be marked, facilitating the mounting of the folding seat 213 to the cross beam 12.

[0106] It should be noted that the first side and the second side of the folding seat 213 are arranged away from each other, and the third side and the fourth side of the folding seat 213 are arranged away from each other, the third side is connected between the first side and the second side, and the fourth side is connected between the first side and the second side.

[0107] It should be noted that when marking the first position line, the second position line, the third position line and the fourth position line, the folding seat 213 positioning template can be used, or the first position line, the second position line, the third position line and the fourth position line can be marked according to the distance between the center line of the cross beam 12 and the center line of the middle beam 11 and the folding seat 213.

[0108] When the folding seat 213 positioning template is used, the folding seat 213 positioning template is connected with the two connecting pins 60, and the folding seat 213 positioning template is aligned with the center line of the cross beam 12 and the center line of the middle beam 11, then the lifting vehicle is used to lift the bottom door structure 21, so that the folding seat 213 positioning template is attached to the cross beam 12, and the first position line, the second position line, the third position line and the fourth position line are marked.

[0109] The folding seat 213 positioning template and the two connecting pins 60 can ensure that the distance between the two bottom door folding seats 212 meets the relevant requirements.

[0110] As shown in the drawings, Figure 6、 Figure 7 and Figure 15 As shown in FIG. 7, in the present embodiment, the step S73 of connecting the hinge seat 213 of the bottom door structure 21 and the cross beam 12 respectively comprises:

[0111] The step S731 of connecting the hinge seat 213 and the cross beam 12 by welding process;

[0112] The step S732 of rotating the bottom door body 211 to test the rotation flexibility of the bottom door body 211;

[0113] The step S733 of measuring the first gap L1 between the bottom door body 211 and the funnel back 15 of the vehicle body structure 10;

[0114] The step S734 of measuring the second gap L2 between the bottom door body 211 and the first side beam 13 of the vehicle body structure 10;

[0115] The step S735 of measuring the third gap L3 between the bottom door body 211 and the second side beam 14 of the vehicle body structure 10;

[0116] The step S736 of completing the connection of the hinge seat 213 and the cross beam 12 when the first gap L1 meets the first preset interval, the second gap L2 meets the second preset interval, and the third gap L3 meets the third preset interval.

[0117] Through the above setting, the hinge seat 213 and the cross beam 12 can be connected. The rotation flexibility test of the bottom door body 211 is convenient for judging whether the bottom door rotates smoothly, and then it is convenient to adjust the bottom door according to the rotation smoothness of the bottom door. The measurement of the first gap L1, the second gap L2 and the third gap L3 is convenient for judging whether the installation position of the bottom door body 211 is accurate, and then the position of the bottom door body 211 can be adjusted or the bottom door body 211 can be adjusted according to the first gap L1, the second gap L2 and the third gap L3, so as to ensure that the first gap L1 meets the first preset interval, the second gap L2 meets the second preset interval, and the third gap L3 meets the second preset interval.

[0118] It should be noted that when the rotation flexibility test of the bottom door body 211 is performed, if there is an abnormal sound when the bottom door body 211 rotates, or the pushing force used to push the bottom door body 211 increases when the bottom door body 211 rotates to a certain position, it is judged that the bottom door body 211 does not rotate flexibly, and the bottom door body 211 needs to be adjusted.

[0119] The first side beam 13 and the second side beam 14 have the same structure, and the first side beam 13 comprises a side beam plate 131 and a side funnel plate 16 connected with the side beam plate 131, and the side beam plate 131 is arranged above the side funnel plate 16.

[0120] The second gap L2 between the bottom door door body 211 and the first side beam 13 of the vehicle body structure 10 is measured, that is, the gap between the bottom door door body 211 and the side funnel plate 16 of the vehicle body structure 10 is measured.

[0121] As shown in Figure 4 and Figure 8 In the present embodiment, the step S50 of connecting the first shaft support 40 and the second shaft support 50 to the vehicle body structure 10 respectively includes:

[0122] The step S51 of obtaining two process shaft positioning templates 70;

[0123] The step S52 of placing the two process shaft positioning templates 70 on the support mounting surface 121 of the cross beam 12 at intervals;

[0124] The step S53 of placing the process shaft 80 on the two process shaft positioning templates 70;

[0125] The step S54 of adjusting the height of the first shaft support 40 and the height of the second shaft support 50 according to the distance between the process shaft 80 and the support mounting surface 121 of the cross beam 12;

[0126] The step S55 of placing the first shaft support 40 and the second shaft support 50 on the cross beam 12 at intervals, and connecting the process shaft 80 to the first shaft support 40 and the second shaft support 50;

[0127] The step S56 of connecting the first shaft support 40 and the cross beam 12, and connecting the second shaft support 50 and the cross beam 12.

[0128] Through the above setting, the position of the process shaft 80 can be determined by using the two process shaft positioning templates 70 to cooperate with the support mounting surface 121 of the cross beam 12, and then the height of the first shaft support 40 and the height of the second shaft support 50 can be determined according to the position of the process shaft 80, and then the height of the first shaft support 40 and the height of the second shaft support 50 can be adjusted, and then the first shaft support 40 and the second shaft support 50 are installed to the cross beam 12.

[0129] When the first shaft support 40 and the second shaft support 50 are assembled with the cross beam 12, the middle beam 11, the cross beam 12, the first side beam 13 and the second side beam 14 are turned over by 180°, and the synchronous assembly of the first shaft support 40 and the second shaft support 50 is performed by using the process shaft 80 and the process shaft positioning template 70, so as to guarantee the height values of the first shaft support 40 and the second shaft support 50 relative to the cross beam 12, thereby controlling the height and the inclination after the subsequent transmission shaft 31 is assembled.

[0130] When the vehicle body structure 10 is welded, the middle beam 11, the cross beam 12, the first side beam 13 and the second side beam 14 are placed on the support base. The middle beam 11 is fixed by a locking device to further control the deflection of the middle beam 11 to 2±1mm. The cross beam 12 is fixed by a support device on both sides to ensure that the horizontal difference in the length direction of the cross beam 12 is not greater than 3mm. Then the end walls and side walls are assembled.

[0131] The third preset deflection value range is 2±1mm. The third preset horizontal difference range is greater than or equal to 0 and less than or equal to 3mm.

[0132] It should be noted that the axis of the process shaft is parallel to the center line of the crossbeam.

[0133] When the two process shaft positioning templates 70 are placed at intervals on the support mounting surface 121 of the crossbeam 12, the two process shaft positioning templates 70 extend along the direction of the center line of the crossbeam.

[0134] Adjusting the height of the first shaft support 40 and the second shaft support 50 according to the distance between the process shaft 80 and the support mounting surface 121 of the crossbeam 12 means that, according to the distance between the process shaft 80 and the crossbeam, the outer surfaces of the first shaft support 40 and the second shaft support 50 are trimmed so that the first shaft support 40 and the second shaft support 50 are placed alternately on the crossbeam 12, and after the process shaft 80 is connected to the first shaft support 40 and the second shaft support 50, the distance between the process shaft 80 and the crossbeam 12 remains unchanged.

[0135] like Figure 9 As shown, in this embodiment, step S80: connecting the bottom door opening and closing mechanism 30 to both the first shaft support 40 and the second shaft support 50, and connecting the bottom door opening and closing mechanism 30 to both bottom door bodies 211 of the two bottom door structures 21, includes:

[0136] Step S81: Obtain the drive shaft positioning template 90, on which a positioning arc surface 91 is provided;

[0137] Step S83: Connect the drive shaft positioning template 90 to the connecting pin 60, and position the positioning arc surface 91 at the end of the drive shaft positioning template 90 away from the crossbeam 12;

[0138] Step S84: Adjust the height of the bottom door opening and closing mechanism 30 until the drive shaft 31 of the bottom door opening and closing mechanism 30 is in contact with the positioning arc surface 91;

[0139] Step S85: Connect the drive shaft 31 and the first shaft support 40, as well as the drive shaft 31 and the second shaft support 50 respectively;

[0140] Step S86: Use the first connecting post 100 to connect the first end of the first link structure 32 of the bottom door opening and closing mechanism 30 to the double lever 33 of the bottom door opening and closing mechanism 30; use the second connecting post 110 to connect the second end of the first link structure 32 to one of the two bottom door hinges 212; use the third connecting post 120 to connect the first end of the second link structure 34 of the bottom door opening and closing mechanism 30 to the double lever 33 of the bottom door opening and closing mechanism 30; and use the fourth connecting post 130 to connect the second end of the second link structure 34 to the other bottom door hinge 212.

[0141] With the above setup, the position of the drive shaft 31 can be determined using the drive shaft positioning template 90, allowing the drive shaft 31 to be installed onto the first shaft support 40 and the second shaft support 50. After the drive shaft 31 is installed, the first connecting rod structure 32 connects the double lever 33 to one of the two bottom door hinges 212, and the second connecting rod structure 34 connects the double lever 33 to the other bottom door hinge 212.

[0142] The drive shaft 31 is connected to the first shaft support 40 and the second shaft support 50 by bolts.

[0143] It should be noted that the drive shaft positioning template is T-shaped.

[0144] Each bottom door opening and closing mechanism 30 includes two double levers 33, which are spaced apart in the axial direction of the drive shaft 31.

[0145] like Figure 10 and Figure 11 As shown, in this embodiment, after step S86: connecting the first end of the first link structure 32 of the bottom door opening and closing mechanism 30 to the double lever 33 of the bottom door opening and closing mechanism 30 using the first connecting column 100, connecting the second end of the first link structure 32 to the bottom door hinge 212 using the second connecting column 110, connecting the first end of the second link structure 34 of the bottom door opening and closing mechanism 30 to the double lever 33 of the bottom door opening and closing mechanism 30 using the third connecting column 120, and connecting the second end of the second link structure 34 to the bottom door hinge 212 using the fourth connecting column 130, step S80: connecting the bottom door opening and closing mechanism 30 to both the first shaft support 40 and the second shaft support 50, and connecting the bottom door opening and closing mechanism 30 to both bottom door bodies 211 of the two bottom door structures 21, the step further includes:

[0146] Step S87: The fixed frame 141 of the eccentricity measuring ruler 140 is attached to the first connecting column 100 and the second connecting column 110, and the moving plate 142 of the eccentricity measuring ruler 140 is attached to the transmission shaft 31, the eccentricity E is measured, and when the eccentricity E meets the fourth preset interval, the length of the first connecting rod structure 32 is adjusted and the length of the second connecting rod structure 34 is adjusted, wherein the moving plate 142 is movably arranged on the fixed frame 141 along the width direction of the fixed frame 141.

[0147] Through the above setting, the eccentricity E can be measured by using the eccentricity measuring ruler 140, and then the length of the first connecting rod structure 32 and the length of the second connecting rod structure 34 can be adjusted according to the eccentricity E until the eccentricity E meets the fourth preset interval.

[0148] The eccentricity E refers to the minimum distance between the connecting line of the axis of the first connecting column 100 and the axis of the second connecting column 110 and the axis of the transmission shaft 31 in the width direction of the fixed frame 141.

[0149] When measuring the eccentricity, the moving plate 142 is attached to the transmission shaft 31, at this time, the moving plate 142 protrudes from the surface of the fixed frame 141 by a distance F, and the distance F is the eccentricity E.

[0150] It should be noted that the bottom door opening and closing mechanism 30 further comprises an opening door arm 35 and a closing door arm 36, and the opening door arm 35 and the closing door arm 36 are respectively arranged at both ends of the transmission shaft 31.

[0151] As shown in Figures 12 to 14 , the transmission shaft 31 is processed by a lathe, and the coaxiality of the transmission shaft 31 meets the coaxiality preset interval. The rivet holes for connecting the opening door arm 35 and the transmission shaft 31 and the rivet holes for connecting the closing door arm 36 and the transmission shaft 31 are processed by a numerical control milling machine, respectively ensuring the angle between the axis of the rivet hole for connecting the opening door arm 35 and the transmission shaft 31 and the vertical direction and the angle between the axis of the rivet hole for connecting the closing door arm 36 and the transmission shaft 31 and the vertical direction.

[0152] The coaxiality preset interval is ≤0.8mm.

[0153] When the bottom door opening and closing mechanism 30 is assembled, the spatial positions of each component of the transmission shaft 31 in the state of the closed bottom door are simulated, the spatial angle size of the bottom door opening and closing mechanism 30 is converted into the transverse and longitudinal coordinate size relative to the axis of the transmission shaft 31, and the assembly of the bottom door opening and closing mechanism 30 is performed by using the pin hole positioning mode of the assembly tool. The transmission shaft 31 is positioned by the connection with the first shaft support 40 and the second shaft support 50, the double-link lever 33, the door opening arm 35 and the door closing arm 36 are all positioned by holes, the coaxiality of the holes on the same side of the double-link lever 33 is controlled, and the relative position accuracy of the holes of the double-link lever 33 and the contact roller support holes on the door opening arm 35 and the door closing arm 36. After positioning, rivet installation, riveting and related welding are performed.

[0154] It should be noted that the assembly tool includes a base plate, a first support, a second support, a third support, a fourth support, a fifth support and a sixth support. The first support, the second support, the third support, the fourth support, the fifth support and the sixth support are sequentially and spacedly arranged on the base plate. The directions of the first support to the sixth support are parallel to the axial direction of the transmission shaft.

[0155] The first support is used to support the door opening arm 35. The second support and the fifth support are used to support the transmission shaft 31. The third support is used to support one of the two double-link levers, and the fourth support is used to support the other of the two double-link levers. The sixth support is used to support the door closing arm 36.

[0156] The door opening arm 35 is connected to the first support by a first positioning pin. One of the double-link levers 33 connected to the third support is connected to the third support by a second positioning pin and a third positioning pin. One of the double-link levers 33 connected to the fourth support is connected to the fourth support by a fourth positioning pin and a fifth positioning pin. The door closing arm 36 is connected to the sixth support by a sixth positioning pin.

[0157] By using the assembly tool, the assembly of the door opening arm 35 and the door closing arm 36 of the bottom door opening and closing mechanism 30 is more accurate. The opening and closing of the bottom door can be more accurately controlled by the door opening arm and the door closing arm.

[0158] In the present embodiment, after the step S87 of measuring the eccentricity E by fitting the fixed frame 141 of the eccentricity measuring scale 140 to the first connecting column 100 and the second connecting column 110, and fitting the moving plate 142 of the eccentricity measuring scale 140 to the transmission shaft 31, the step S80 of connecting the bottom door opening and closing mechanism 30 to the first shaft support 40 and the second shaft support 50, and connecting the bottom door opening and closing mechanism 30 to the bottom door body 211 of the two bottom door structures 21 further includes:

[0159] Step S88: measure the second gap L2 between the bottom door body 211 and the first side beam 13, and measure the third gap L3 between the bottom door body 211 and the second side beam 14, when the second gap L2 meets the third preset interval and the third gap L3 meets the fourth preset interval, the connection of the bottom door opening and closing mechanism 30 and the bottom door body 211 of the two bottom door structures 21 is completed.

[0160] Through the above setting, the second gap L2 and the third gap L3 are measured, which is convenient for trimming the door body or adjusting the position of the door body according to the second gap L2 and the third gap L3.

[0161] After measuring the second gap L2 and the third gap L3, the height dimension of the contact roller of the door opening arm 35 and the contact roller of the door closing arm 36 is measured.

[0162] In the closed state of the bottom door structure 21, by rotating the transmission shaft 31, adjusting the length of the first connecting rod structure 32 and the second connecting rod structure 34, the eccentricity E and the gap between the bottom door body 211 and the funnel ridge 15 can be adjusted.

[0163] The distance between the end of the moving plate 142 in contact with the transmission shaft 31 and the fixed frame 141 is the eccentricity E. By using the eccentricity measuring ruler 140, the detection is efficient and reading is convenient. After the eccentricity E meets the fourth preset interval, the gap between the bottom door body 211 and the funnel ridge 15, the first side beam 13 and the second side beam 14 is checked by using the plug gauge.

[0164] The bottom door body 211 is tested for opening and closing multiple times to detect whether the dimensions of the eccentricity E, the second gap L2 and the third gap L3 change. If there is a change, the first connecting rod structure 32 and the second connecting rod structure 34 can be adjusted. Finally, the adjustment nuts of the first connecting rod structure 32 and the second connecting rod structure 34 are tightened and locked.

[0165] In the present embodiment, before the step S83 of connecting the transmission shaft positioning template 90 with the connecting pin 60, the step S80 of connecting the bottom door opening and closing mechanism 30 with the first shaft support 40 and the second shaft support 50, and connecting the bottom door opening and closing mechanism 30 with the bottom door body 211 of the two bottom door structures 21 further includes:

[0166] Step S82: connecting the bottom door opening and closing mechanism 30 with the first shaft support 40 and the second shaft support 50, and connecting the bottom door opening and closing mechanism 30 with the bottom door body 211 of the two bottom door structures 21, rotating the bottom door body 211 so that the bottom door body 211 is in close contact with the first side beam 13 and the second side beam 14.

[0167] Through the above setting, the space between the two bottom door bodies 211 can be increased, which is convenient for installing the bottom door opening and closing mechanism 30.

[0168] In the embodiment, the step S84 of adjusting the height of the bottom door opening and closing mechanism 30 until the transmission shaft 31 of the bottom door opening and closing mechanism 30 is attached to the positioning arc surface 91 comprises:

[0169] The step S841 of placing the bottom door opening and closing mechanism 30 on the lifting device and adjusting the position of the bottom door opening and closing mechanism 30 so that the double connecting lever 33 is aligned with the bottom door hinge 212;

[0170] The step S842 of using the lifting device to drive the bottom door opening and closing mechanism 30 to rise until the transmission shaft 31 is attached to the positioning arc surface 91.

[0171] Through the above setting, the transmission shaft 31 and the double connecting lever 33 can be installed to the first shaft support 40 and the second shaft support 50.

[0172] Using the manufacturing method of the hopper car of the embodiment, the probability that the eccentricity E and the contact roller height of the bottom door opening and closing mechanism 30 after assembly do not meet the requirements can be reduced, and the assembly quality qualification rate can be improved. The manufacturing process of the bottom door opening and closing mechanism 30 is simplified, the number of workers is reduced, the assembly efficiency is improved, the production rhythm of the hopper car is shortened, and the production capacity is improved.

[0173] The manufacturing method of the hopper car of the embodiment divides the manufacturing modules according to the assembly sequence of the parts and the manufacturing precision requirements, optimizes the process flow, determines the assembly reference, formulates the process measures, and selects the detection method, realizes the rapid installation and debugging of the bottom door opening and closing mechanism 30, and guarantees the related size requirements.

[0174] In the description of the present application, it should be understood that "a plurality of" means two or more. The orientation words such as "front, rear, upper, lower, left, right", "transverse, vertical, perpendicular, horizontal" and "top, bottom" and the like indicate the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present application and simplifying the description, and in the absence of the opposite description, these orientation words do not indicate and imply that the indicated device or element must have a specific orientation or be constructed and operated in a specific orientation, therefore it cannot be understood as a limitation on the protection scope of the present application; the orientation words "inner, outer" refer to the inner and outer of the contour of each component itself.

[0175] For purposes of the description hereinafter, the terms "upper", "lower", "right", "left", "rear", "front", "vertical" and "horizontal" as can be perceived herein relative to the accompanying drawings refer to the orientation of the components being described. However, it is to be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device described herein relative to the other device or structure is inverted, then a spatially relative term such as "above" can be interpreted as meaning "below" or "below" can be interpreted as meaning "above". The device can also be oriented in other ways (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly. The devices can be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

[0176] In addition, it should be pointed out that the use of the terms "first", "second" and the like in connection with various elements is merely intended for identification, and does not constitute a special meaning, and therefore cannot be interpreted as a limitation on the scope of protection of the present application.

[0177] The preferred embodiments of the present application are described above in detail. The present application, however, is not limited to the above embodiments, but can be variously modified and changed by those skilled in the art without departing from the scope of the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the present application.

Claims

1. A method of manufacturing a hopper car, characterized by, The application relates to a vehicle body structure (10) and a manufacturing method thereof. The application relates to a vehicle body structure (10) and a manufacturing method thereof. The application relates to a vehicle body structure (10) and a manufacturing method thereof. The application relates to a vehicle body structure (10) and a manufacturing method thereof. The application relates to a vehicle body structure (10) and a manufacturing method thereof. The application relates to a vehicle body structure (10) and a manufacturing method thereof. The application relates to a vehicle body structure (10) and a manufacturing method thereof. The application relates to a vehicle body structure (10) and a manufacturing method thereof. The application relates to a vehicle body structure (10) and a manufacturing method thereof.

2. The method of manufacturing a hopper car according to claim 1, wherein The application relates to a vehicle body structure (10) and a manufacturing method thereof. The application relates to a vehicle body structure (10) and a manufacturing method thereof. The application relates to a vehicle body structure (10) and a manufacturing method thereof. The application relates to a vehicle body structure (10) and a manufacturing method thereof.

3. The method of manufacturing a hopper car of claim 2, wherein, The application relates to a vehicle body structure (10) and a manufacturing method thereof. The application relates to a vehicle body structure (10) and a manufacturing method thereof. The application relates to a vehicle body structure (10) and a manufacturing method thereof. The application relates to a vehicle body structure (10) and a manufacturing method thereof.

4. The method of manufacturing a hopper car according to claim 2 or 3, wherein The application relates to a vehicle body structure (10) and a manufacturing method thereof. The application relates to a vehicle body structure (10) and a manufacturing method thereof. The application relates to a vehicle body structure (10) and a manufacturing method thereof. The application relates to a vehicle body structure (10) and a manufacturing method thereof. The application relates to a vehicle body structure (10) and a manufacturing method thereof. The application relates to a vehicle body structure (10) and a manufacturing method thereof. The application relates to a vehicle body structure (10) and a manufacturing method thereof. The application relates to a vehicle body structure (10) and a manufacturing method thereof. The application relates to a vehicle body structure (10) and a manufacturing method thereof. 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The application relates to a vehicle body structure Connecting the hinge seat (213) and the cross beam (12) through a welding process; Rotating the bottom door body (211) to test the flexibility of the bottom door body (211) rotation; Measuring the first gap L1 between the bottom door body (211) and the funnel ridge (15) of the vehicle body structure (10); Measuring the second gap L2 between the bottom door body (211) and the first side beam (13) of the vehicle body structure (10); Measuring the third gap L3 between the bottom door body (211) and the second side beam (14) of the vehicle body structure (10); When the first gap L1 meets the first preset interval, the second gap L2 meets the second preset interval, and the third gap L3 meets the third preset interval, the connection of the hinge seat (213) and the cross beam (12) is completed.

5. The method of manufacturing a hopper car according to any one of claims 1-3, wherein, The step of connecting the first shaft support (40) and the second shaft support (50) to the vehicle body structure (10) respectively includes: Obtaining two process shaft positioning templates (70); Placing two process shaft positioning templates (70) on the support mounting surface (121) of the cross beam (12) at intervals; Placing a process shaft (80) on the two process shaft positioning templates (70); Adjusting the height of the first shaft support (40) and the height of the second shaft support (50) according to the distance between the process shaft (80) and the support mounting surface (121) of the cross beam (12); Placing the first shaft support (40) and the second shaft support (50) on the cross beam (12) at intervals, and connecting the process shaft (80) to the first shaft support (40) and the second shaft support (50); Connecting the first shaft support (40) and the cross beam (12), and connecting the second shaft support (50) and the cross beam (12).

6. The method of manufacturing a hopper car according to any one of claims 1-3, wherein, The step of connecting the bottom door opening and closing mechanism (30) to the first shaft support (40) and the second shaft support (50), and connecting the bottom door opening and closing mechanism (30) to the bottom door body (211) of the two bottom door structures (21) includes: Obtaining a transmission shaft positioning template (90) provided with a positioning arc surface (91); Connecting the transmission shaft positioning template (90) to the connecting pin (60), and positioning the positioning arc surface (91) at the end of the transmission shaft positioning template (90) away from the cross beam (12); Adjusting the height of the bottom door opening and closing mechanism (30) until the transmission shaft (31) of the bottom door opening and closing mechanism (30) is in close contact with the positioning arc surface (91); Respectively connecting the transmission shaft (31) and the first shaft support (40), and the transmission shaft (31) and the second shaft support (50); Respectively connecting the transmission shaft (31) and the first shaft support (40), and the transmission shaft (31) and the second shaft support (50); The first end of the first connecting rod structure (32) of the bottom door opening and closing mechanism (30) is connected with the double connecting lever (33) of the bottom door opening and closing mechanism (30) by using a first connecting column (100), the second end of the first connecting rod structure (32) is connected with one of the two bottom door hinges (212) by using a second connecting column (110), the first end of the second connecting rod structure (34) of the bottom door opening and closing mechanism (30) is connected with the double connecting lever (33) of the bottom door opening and closing mechanism (30) by using a third connecting column (120), and the second end of the second connecting rod structure (34) is connected with the other of the two bottom door hinges (212) by using a fourth connecting column (130).

7. The method of manufacturing a hopper car according to claim 6, wherein After the first end of the first connecting rod structure (32) of the bottom door opening and closing mechanism (30) is connected with the double connecting lever (33) of the bottom door opening and closing mechanism (30) by using a first connecting column (100), the second end of the first connecting rod structure (32) is connected with the bottom door hinge (212) by using a second connecting column (110), the first end of the second connecting rod structure (34) of the bottom door opening and closing mechanism (30) is connected with the double connecting lever (33) of the bottom door opening and closing mechanism (30) by using a third connecting column (120), and the second end of the second connecting rod structure (34) is connected with the bottom door hinge (212) by using a fourth connecting column (130), the step of connecting the bottom door opening and closing mechanism (30) with the first shaft support (40) and the second shaft support (50), and connecting the bottom door opening and closing mechanism (30) with the bottom door body (211) of the two bottom door structures (21) further comprises: The fixed frame (141) of the eccentricity measuring ruler (140) is attached to the first connecting column (100) and the second connecting column (110), and the moving plate (142) of the eccentricity measuring ruler (140) is attached to the transmission shaft (31), and the eccentricity E is measured, and when the eccentricity E meets the fourth preset interval, the length of the first connecting rod structure (32) is stopped adjusting and the length of the second connecting rod structure (34) is stopped adjusting, wherein the moving plate (142) is movably arranged on the fixed frame (141) along the width direction of the fixed frame (141).

8. The method of manufacturing a hopper car according to claim 7, wherein After the step of attaching the fixed frame (141) of the eccentricity measuring ruler (140) to the first connecting column (100) and the second connecting column (110), and attaching the moving plate (142) of the eccentricity measuring ruler (140) to the transmission shaft (31) to measure the eccentricity E, the step of connecting the bottom door opening and closing mechanism (30) with the first shaft support (40) and the second shaft support (50), and connecting the bottom door opening and closing mechanism (30) with the bottom door body (211) of the two bottom door structures (21) further comprises: Measure the second gap L2 between the bottom door body (211) and the first side beam (13), and measure the third gap L3 between the bottom door body (211) and the second side beam (14), when the second gap L2 meets the third preset interval and the third gap L3 meets the fourth preset interval, the connection of the bottom door opening and closing mechanism (30) and the bottom door body (211) of the two bottom door structures (21) is completed.

9. The method of manufacturing a hopper car of claim 6, wherein, Before the step of connecting the transmission shaft positioning template (90) with the connecting pin (60), the method for manufacturing the hopper car comprises: Rotating the bottom door body (211) so that the bottom door body (211) is attached to the first side beam (13) and the second side beam (14).

10. The method of manufacturing a hopper car of claim 6, wherein, The step of adjusting the height of the bottom door opening and closing mechanism (30) until the transmission shaft (31) of the bottom door opening and closing mechanism (30) is attached to the positioning camber surface (91) comprises: Place the bottom door opening and closing mechanism (30) on the lifting device, and adjust the position of the bottom door opening and closing mechanism (30) so that the double connecting lever (33) is aligned with the bottom door hinge (212); Use the lifting device to lift the bottom door opening and closing mechanism (30) until the transmission shaft (31) is attached to the positioning camber surface (91).

Images