Pull rod device for connecting side wall and funnel ridge of hopper car

Abstract

The invention discloses a pull rod device for connecting a hopper car side wall and a hopper ridge, and relates to the field of coal hopper car body steel structure accessories, the pull rod device comprises two first support assemblies respectively arranged on the side wall of a hopper car; the second support assembly is arranged on a hopper ridge of the hopper car; the two pull rod assemblies are arranged between the first support assembly and the second support assembly respectively, the two ends of each pull rod assembly are connected in a screwed mode, and the plane where the two pull rod assemblies are located is parallel to the width direction of the hopper car; the pull rod device can ensure that the pull rod assembly is not broken in the application process of a vehicle, effectively prevents the side wall from expanding outwards, and meanwhile can facilitate assembly operation of workers.

Description

Technical Field

[0001] The invention belongs to the field of steel structure accessories for a coal hopper car body, and more specifically, relates to a pull rod device connecting a side wall of a hopper car and a hopper ridge. Background Art

[0002] As one of the main 70t-class railway freight cars, the KM70 coal hopper car is mainly used to transport bulk goods such as coal and ore. It can meet the needs of power stations, ports, coal preparation, steel and other enterprises with fixed marshaling, recycling and fixed-point loading and unloading.

[0003] The tie rod assembly of the KM70 coal hopper car is an important component that connects the two side walls and the hopper ridge. It can effectively prevent the side wall from expanding outward and improve the overall load-bearing capacity of the vehicle. In the existing KM70 coal hopper car tie rod assembly, the connection between the tie rod and the tie rod support adopts a welded structure, in which the connecting pipe adopts a 60mm×5mm 20 steel pipe with a 50mm long open groove at both ends, and is fixedly connected to the upper and lower connecting plates by a fillet weld with a welding angle of 4mm. Due to the short welding length between the connecting pipe and the upper and lower connecting plates, the thin wall of the connecting pipe, poor assembly quality or poor welding quality, and the accumulation and corrosion of coal during use and the squeezing of the connecting pipe by coal during vehicle loading and driving, the welds of some tie rods and supports are broken, the tie rod assembly loses its function, causing the side wall to expand outward, reducing the overall load-bearing capacity of the vehicle and increasing the vehicle maintenance cost. Summary of the invention

[0004] The purpose of the present invention is to address the deficiencies in the prior art and to provide a pull rod device connecting the side wall and the funnel ridge of a hopper car. The pull rod device respectively arranges a first support assembly and a second support assembly on the side wall and the funnel ridge, and connects the two support assemblies through a pull rod assembly, thereby forming a connecting structure in the hopper car. This can alleviate the outward expansion of the side wall. In addition, bolts are used when connecting the pull rod assembly and the support assembly, which can reduce the difficulty of operation.

[0005] In order to achieve the above object, the present invention provides a pull rod device for connecting the side wall of a hopper car and a hopper ridge, comprising:

[0006] Two first support assemblies are respectively arranged on the side walls of the hopper car;

[0007] A second support assembly is disposed on the hopper ridge of the hopper car;

[0008] Two tie rod assemblies are respectively arranged between the first support assembly and the second support assembly, and the two ends of the tie rod assemblies are respectively connected by screw connection. The plane where the two tie rod assemblies are located is parallel to the width direction of the hopper car.

[0009] Optionally, the first support assembly includes a first vertical plate and a first supplementary plate, the first vertical plate and the first supplementary plate are correspondingly provided with first pull rod connecting holes, the first vertical plate and the first supplementary plate are centrally arranged, and the first supplementary plate is respectively welded to both sides of the first vertical plate.

[0010] Optionally, a pad and a support pad are respectively provided on the outer side and the inner side of the side wall, the pad and the support pad are connected by screwing, the support pad is connected to the first vertical plate by welding, and the support pad is perpendicular to the first vertical plate.

[0011] Optionally, the second support assembly includes a second vertical plate, a second left supplementary plate and a second right supplementary plate, the second left supplementary plate is respectively welded on both sides of one end of the second vertical plate, the second right supplementary plate is respectively welded on both sides of the other end of the second vertical plate, the second vertical plate and the second left supplementary plate are correspondingly provided with a second tie rod left connecting hole, and the second vertical plate and the second right supplementary plate are correspondingly provided with a second tie rod right connecting hole.

[0012] Optionally, the second left supplementary plate and the second right supplementary plate are both L-shaped, and the second left supplementary plate and the second right supplementary plate are correspondingly arranged on the second vertical plate.

[0013] Optionally, one end of the second left patch plate and one end of the second right patch plate are in contact with the second vertical plate, and an arc-shaped notch is provided on the lower side of the other end of the second left patch plate and the other end of the second right patch plate, and the arc-shaped notch is in contact with the side of the funnel ridge.

[0014] Optionally, the pull rod assembly includes a connecting tube and a U-shaped plate, two U-shaped grooves are respectively opened at both ends of the connecting tube, and the two U-shaped grooves are opened correspondingly along the radial direction of the connecting tube. The two ends of the U-shaped plate are respectively conformed to and welded to the groove walls of the two U-shaped grooves, and a connecting hole is also set through the tube wall of the connecting tube.

[0015] Optionally, a patch plate is further provided at the end of the connecting pipe, and the patch plate is welded to the connecting pipe and the U-shaped plate.

[0016] Optionally, the first support assembly, the second support assembly and the tie rod assembly are all made of Q450NQR1 high-strength atmospheric corrosion-resistant steel.

[0017] The present invention provides a pull rod device for connecting the side wall of a hopper car and the ridge of the hopper, and its beneficial effects are:

[0018] 1. The tie rod device adopts a hinged tie rod assembly to replace the original welded tie rod assembly, which avoids the failure of the connecting pipe falling off due to welding defects such as biased welding and leaking welding between the connecting pipe and the upper and lower vertical plates, saving maintenance costs and facilitating maintenance and replacement;

[0019] 2. The connecting pipe in the pull rod device is a metal pipe with increased diameter and wall thickness. It can be a 20 steel pipe or a stainless steel pipe. This improves the connection strength of the connecting pipe. At the same time, a patch plate is welded at the end of the connecting pipe to avoid corrosion caused by coal and rainwater entering the pipe;

[0020] 3. The pull rod device is connected in a hinged form, which can improve the stress state of the connecting pipe, reduce assembly constraints, eliminate additional stress, facilitate assembly, inspection and maintenance, and improve the reliability of the pull rod assembly.

[0021] Other features and advantages of the present invention will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The above and other objects, features and advantages of the present invention will become more apparent through a more detailed description of exemplary embodiments of the present invention in conjunction with the accompanying drawings, wherein like reference numerals generally represent like components throughout the exemplary embodiments of the present invention.

[0023] Figure 1 A schematic structural diagram of a pull rod device connecting a hopper car side wall and a hopper ridge according to an embodiment of the present invention is shown.

[0024] Figure 2 A connection schematic diagram showing a pull rod device connecting a side wall of a hopper car and a hopper ridge according to an embodiment of the present invention installed in a hopper car.

[0025] Figure 3 Shows Figure 2 Left view of .

[0026] Figure 4 A schematic structural diagram of a first support assembly according to an embodiment of the present invention is shown.

[0027] Figure 5 Shows Figure 4 Left view of .

[0028] Figure 6 A schematic diagram of the connection between the first support assembly and the side wall according to an embodiment of the present invention is shown.

[0029] Figure 7 A schematic structural diagram of a second support assembly according to an embodiment of the present invention is shown.

[0030] Figure 8 Shows Figure 7 Left view of .

[0031] Fig. 9 A schematic structural diagram of a tie rod assembly according to an embodiment of the present invention is shown.

[0032] Fig.10 A partial cross-sectional view of the right end of a tie rod assembly according to an embodiment of the present invention is shown.

[0033] Fig.11 Shows Fig.10 Right view of .

[0034] Fig.12 A schematic structural diagram of a connecting pipe according to an embodiment of the present invention is shown.

[0035] Description of reference numerals:

[0036] 1. First bearing assembly; 11. First vertical plate; 12. First supplementary plate; 13. First tie rod connecting hole; 2. Side wall; 21. Bearing pad; 3. Second bearing assembly; 31. Second vertical plate; 32. Second left supplementary plate; 33. Second right supplementary plate; 34. Second tie rod left connecting hole; 35. Second tie rod right connecting hole; 36. Arc-shaped notch; 4. Funnel ridge; 5. Tie rod assembly; 51. Connecting tube; 52. U-shaped plate; 53. U-shaped groove; 54. Connecting hole; 55. Supplementary plate. DETAILED DESCRIPTION

[0037] The preferred embodiments of the present invention will be described in more detail below. Although the preferred embodiments of the present invention are described below, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided to make the present invention more thorough and complete, and to fully convey the scope of the present invention to those skilled in the art.

[0038] The present invention provides a pull rod device for connecting the side wall of a hopper car and a hopper ridge, comprising:

[0039] Two first support assemblies are respectively arranged on the side walls of the hopper car;

[0040] A second support assembly is disposed on the hopper ridge of the hopper car;

[0041] The two tie rod assemblies are respectively arranged between the first support assembly and the second support assembly. The two ends of the tie rod assembly are respectively connected by screw connection. The plane where the two tie rod assemblies are located is parallel to the width direction of the hopper car.

[0042] Specifically, the tie rod device is provided with a first support assembly and a second support assembly on the side wall and the funnel ridge respectively, and the first support assembly and the second support assembly are connected through the tie rod assembly. The tie rod assembly and the support assembly are connected by screw connection, so as to avoid defects such as skew welding and welding leakage in the welds between the existing tie rods and the tie rod supports. After installation, the two tie rod assemblies form a V-shaped structure in the hopper car, which can effectively prevent the loader from causing damage to the tie rods during the coal loading process.

[0043] Optionally, the first support assembly includes a first vertical plate and a first supplementary plate, the first vertical plate and the first supplementary plate are correspondingly provided with first pull rod connecting holes, the first vertical plate and the first supplementary plate are centrally arranged, and the first supplementary plate is respectively welded on both sides of the first vertical plate.

[0044] Specifically, in the first support assembly, a first patch plate is welded on both sides of the first vertical plate, and the first patch plate is used as a reinforcing component around the connecting hole, and the portion of the first vertical plate protruding out of the first patch plate is used as a connecting component; during the welding process, the first pull rod connecting holes of the two are completely overlapped, and then the first support assembly is vertically arranged to form a vertical relationship with the side wall for welding connection.

[0045] Optionally, a pad and a support pad are respectively provided on the outer side and the inner side of the side wall, the pad and the support pad are connected by screwing, the support pad is connected to the first vertical plate by welding, and the support pad is perpendicular to the first vertical plate.

[0046] Specifically, in order to ensure the connection strength between the tie rod assembly and the side wall, a support pad and a pad are respectively arranged on the inner and outer sides of the side wall, the connecting bolts are sequentially passed through the support pad, the side wall and the pad, the three are connected and fixed, and then the first vertical plate is vertically welded to the support pad.

[0047] Optionally, the second support assembly includes a second vertical plate, a second left supplementary plate and a second right supplementary plate. The second left supplementary plate is welded on both sides of one end of the second vertical plate, and the second right supplementary plate is welded on both sides of the other end of the second vertical plate. The second vertical plate and the second left supplementary plate are correspondingly provided with a second pull rod left connecting hole, and the second vertical plate and the second right supplementary plate are correspondingly provided with a second pull rod right connecting hole.

[0048] Specifically, the second support assembly is arranged on the funnel ridge, and a second left supplementary plate and a second right supplementary plate are respectively arranged on both sides of the second vertical plate, and the two supplementary plates at both ends of the same side are arranged on the periphery of the second tie rod connecting hole to ensure the surrounding strength of the tie rod connecting hole, and the thickness of the vertical plate is increased by welding the second left supplementary plate and the second right supplementary plate at both ends of the second vertical plate, so that when the tie rod assemblies at both ends apply tension to the second support assembly, the overall structure of the second support assembly is more stable.

[0049] Optionally, the second left supplementary plate and the second right supplementary plate are both L-shaped, and the second left supplementary plate and the second right supplementary plate are correspondingly arranged on the second vertical plate.

[0050] Optionally, one end of the second left patch plate and one end of the second right patch plate are fitted with the second vertical plate, and the lower sides of the other end of the second left patch plate and the other end of the second right patch plate are provided with arc-shaped notches, which are fitted with the side surfaces of the funnel ridge.

[0051] Specifically, the second left patch plate and the second right patch plate are mirror images of each other. In addition to increasing the strength of the second pull rod connecting holes at both ends of the second vertical plate, the two patch plates are also arranged to form arc-shaped notches on the lower side of the plane portion of the second left and right patch plates perpendicular to the second vertical plate according to the L-shaped shape of the second left and right patch plates. In this way, the second patch plates on both sides of the same end of the second vertical plate form an upwardly concave arc-shaped groove. When the second support assembly is welded to the funnel ridge, in addition to the bottom of the second vertical plate being able to be welded to the top of the funnel ridge, the arc-shaped grooves of the second left and right patch plates can also be welded to the side surfaces on both sides of the top of the funnel ridge. This increases the connection area between the second support assembly and the funnel ridge, and improves the fixing strength of the second support assembly.

[0052] Optionally, the pull rod assembly includes a connecting tube and a U-shaped plate, two U-shaped grooves are respectively opened at both ends of the connecting tube, and the two U-shaped grooves are opened correspondingly along the radial direction of the connecting tube. The two ends of the U-shaped plate are respectively conformed to the groove walls of the two U-shaped grooves and welded together, and a connecting hole is also set through the tube wall of the connecting tube.

[0053] Specifically, the tie rod assembly mainly includes a connecting tube, and two U-shaped grooves are formed on the tube wall at both ends of the connecting tube. The two U-shaped grooves at each end are in the same radial direction, and corresponding connecting holes are opened on the two tube walls between the two U-shaped grooves, and the connecting holes correspond to the connecting holes of the tie rod; the U-shaped plate is installed in the end of the connecting tube, and the outer surfaces of the two ends of the U-shaped plate are conformed to the groove wall of the U-shaped groove, and connected by welding, and connecting holes are opened on the side walls of the U-shaped plate. The connecting holes of the U-shaped plate are concentric with the connecting holes on the connecting tube. When the tie rod assembly is connected to the support assembly at both ends, the U-shaped plate of the tie rod assembly is wrapped around the two sides of the vertical plate, so that the connecting holes on the tie rod assembly are aligned with the tie rod connecting holes on the support assembly, and finally the tie rod assembly and the support assembly are connected by bolts.

[0054] Optionally, a patch plate is further provided at the end of the connecting pipe, and the patch plate is welded to the connecting pipe and the U-shaped plate.

[0055] Specifically, a patch plate is welded to the end of the connecting pipe, and the patch plate is parallel to the cross-section of the connecting pipe. The patch plate is welded to the connecting pipe and the U-shaped plate, so that the patch plate can seal the gap between the outer side of the U-shaped plate and the inner side of the pipe wall of the connecting pipe, thereby preventing coal, rainwater, etc. from entering the connecting pipe and causing corrosion; the axial directions of the patch plate and the connecting pipe are perpendicular to each other, and the side surface of the patch plate is welded to the pipe mouth of the connecting pipe. After the U-shaped plate is connected to the U-shaped groove of the connecting pipe, the two side walls of the U-shaped plate protrude from the port of the connecting pipe, and the end of the patch plate abuts against the outer side of the protruding part of the side wall of the U-shaped plate, and the two are welded together. Since the welding position of the patch plate and the patch plate is set, the end structural strength of the connecting pipe can also be increased, so that the connection between the pull rod structure and the support structure is more stable, and the side wall can be prevented from bulging outward after loading.

[0056] Optionally, the first support assembly, the second support assembly and the tie rod assembly are all made of high-strength atmospheric corrosion-resistant steel Q450NQR1.

[0057] Example

[0058] like Figures 1 to 12 As shown, the present invention provides a pull rod device for connecting the side wall of a hopper car and a hopper ridge, comprising:

[0059] Two first support assemblies 1 are respectively arranged on the side walls 2 of the hopper car;

[0060] A second support assembly 3 is arranged on the hopper ridge 4 of the hopper car;

[0061] The two tie rod assemblies 5 are respectively arranged between the first support assembly 1 and the second support assembly 3, and the two ends of the tie rod assembly 5 are respectively connected by screw connection. The plane where the two tie rod assemblies 5 are located is parallel to the width direction of the hopper car.

[0062] In this embodiment, the first support assembly 1 includes a first vertical plate 11 and a first supplementary plate 12. The first vertical plate 11 and the first supplementary plate 12 are correspondingly provided with first pull rod connecting holes 13. The first vertical plate 11 and the first supplementary plate 12 are centrally arranged, and the first supplementary plate 12 is respectively welded on both sides of the first vertical plate 11.

[0063] In this embodiment, a pad and a support pad 21 are respectively provided on the outer side and the inner side of the side wall 2. The pad and the support pad 21 are connected by screwing. The support pad 21 is connected to the first vertical plate 11 by welding. The support pad 21 and the first vertical plate 11 are perpendicular to each other.

[0064] In this embodiment, the second support assembly 3 includes a second vertical plate 31, a second left supplementary plate 32 and a second right supplementary plate 33. The second left supplementary plate 32 is respectively welded on both sides of one end of the second vertical plate 31, and the second right supplementary plate 33 is respectively welded on both sides of the other end of the second vertical plate 31. The second vertical plate 31 and the second left supplementary plate 32 are correspondingly provided with a second pull rod left connecting hole 34, and the second vertical plate 31 and the second right supplementary plate 33 are correspondingly provided with a second pull rod right connecting hole 35.

[0065] In this embodiment, the second left supplementary plate 32 and the second right supplementary plate 33 are both L-shaped, and the second left supplementary plate 32 and the second right supplementary plate 33 are correspondingly arranged on the second vertical plate 31 .

[0066] In this embodiment, one end of the second left patch plate 32 and one end of the second right patch plate 33 are in contact with the second vertical plate 31 , and an arc-shaped notch 36 is provided on the lower side of the other end of the second left patch plate 32 and the other end of the second right patch plate 33 , and the arc-shaped notch 36 is in contact with the side of the funnel ridge 4 .

[0067] In this embodiment, the pull rod assembly 5 includes a connecting tube 51 and a U-shaped plate 52. Two U-shaped grooves 53 are respectively opened at both ends of the connecting tube 51. The two U-shaped grooves 53 are opened correspondingly along the radial direction of the connecting tube 51. The two ends of the U-shaped plate 52 are respectively conformed to the groove walls of the two U-shaped grooves 53 and welded together. A connecting hole 54 is also set through the tube wall of the connecting tube 51.

[0068] In this embodiment, a patch plate 55 is further provided at the end of the connecting pipe 51 , and the patch plate 55 is welded to the connecting pipe 51 and the U-shaped plate 52 .

[0069] In this embodiment, the first support assembly 1, the second support assembly 3 and the tie rod assembly 5 are all made of Q450NQR1 high-strength atmospheric corrosion-resistant steel.

[0070] In summary, the first support assembly 1 consists of a first vertical plate 11 and a first patch plate 12. The first vertical plate 11 is made of high-strength atmospheric corrosion-resistant steel Q450NQR1 with a thickness of 10 mm; the first patch plate 12 is made of high-strength atmospheric corrosion-resistant steel Q450NQR1 with a thickness of 8 mm; the first patch plate 12 is welded to both sides of the first vertical plate 11, and then a concentric circle of φ31 mm is drilled on the whole to form a first pull rod connecting hole 13. The second support assembly 3 is composed of a second vertical plate 31, a second left supplementary plate 32 and a second right supplementary plate 33. The second vertical plate 31 is made of high-strength atmospheric corrosion-resistant steel Q450NQR1 with a thickness of 10 mm. The second left supplementary plate 32 and the second right supplementary plate 33 are left-right symmetrical parts, and are made of high-strength atmospheric corrosion-resistant steel Q450NQR1 with a thickness of 8 mm. The second left supplementary plate 32 and the second right supplementary plate 33 are welded on both sides of the second vertical plate 31, and then the whole is drilled with concentric circles of φ31 mm to form a second pull rod left connecting hole 34. The pull rod assembly 5 is composed of a connecting pipe 51, a U-shaped plate 52 and a supplementary plate 55. The connecting pipe 51 is made of φ89mm×6mm 20 steel pipe or a stainless steel pipe made of T4003, and has length holes at both ends. The U-shaped groove 53 is 120mm long and 57mm wide; the U-shaped plate 52 is made of a high-strength atmospheric corrosion-resistant steel plate of Q450NQR1 with a thickness of 10mm or a stainless steel plate of T4003 with a total length of 130mm; the patch plate 55 is made of a high-strength atmospheric corrosion-resistant steel plate of Q450NQR1 with a thickness of 5mm or a stainless steel plate of T4003; the two U-shaped plates 52 are assembled with the U-shaped grooves 53 at both ends of the connecting pipe 51 and welded, and the patch plate 55 is welded to the connecting pipe 51 and the U-shaped plate 52 to form a sealing structure, which improves the strength while preventing coal and rainwater from entering the connecting pipe 51 to cause corrosion, and then the two ends are integrally equipped with a φ31mm connecting hole 54.

[0071] The assembly steps of the tie rod device are as follows: 1. Assemble the second support assembly 3 on the funnel ridge 4 of the central funnel assembly; 2. Fix the support pad 21 and the side wall 2 by welding. The support pad 21 is made of high-strength atmospheric corrosion-resistant steel Q450NQR1, with a thickness of 6mm and 8×21 holes drilled. The support pad 21 and the pad on the outer surface of the side wall 2 are connected by M20×50 bolts and M20 nuts to improve the side wall's ability to resist external expansion; 3. Fix the tie rod assembly 5 is connected to the first support assembly 1 and the second support assembly 3 by using M30×130 bolts, M30 nuts or 30×95 flat hole round pins and flat cotter pins that meet CRRC standard Q / QC56-125. Two washers 30 that meet GB / T95 are installed between the tie rod assembly 5 and the first support assembly 1 and the second support assembly 3 to reduce the gap between the U-shaped plate and the first vertical plate 11 and the second vertical plate 31; 4. Finally, the first vertical plate 11 and the support pad plate 21 are welded and fixed.

[0072] The embodiments of the present invention have been described above, and the above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and changes will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments.

Claims

1. A pull rod device connecting the side wall of a hopper car and the ridge of a hopper, characterized in that: include: Two first support assemblies are respectively arranged on the side walls of the hopper car; A second support assembly is disposed on the hopper ridge of the hopper car; Two tie rod assemblies are respectively arranged between the first support assembly and the second support assembly, and the two ends of the tie rod assemblies are respectively connected by screw connection. The plane where the two tie rod assemblies are located is parallel to the width direction of the hopper car.

2. The pull rod device for connecting the side wall of the hopper car and the ridge of the hopper according to claim 1, characterized in that: The first support assembly includes a first vertical plate and a first supplementary plate. The first vertical plate and the first supplementary plate are correspondingly provided with first pull rod connecting holes. The first vertical plate and the first supplementary plate are centrally arranged. The first supplementary plate is respectively welded to both sides of the first vertical plate.

3. The pull rod device for connecting the side wall of the hopper car and the ridge of the hopper according to claim 2, characterized in that: A pad and a support pad are respectively provided on the outer side and the inner side of the side wall, the pad and the support pad are connected by screwing, the support pad is connected to the first vertical plate by welding, and the support pad is perpendicular to the first vertical plate.

4. The pull rod device for connecting the side wall of the hopper car and the ridge of the hopper according to claim 1, characterized in that: The second support assembly includes a second vertical plate, a second left supplementary plate and a second right supplementary plate. The second left supplementary plate is respectively welded on both sides of one end of the second vertical plate, and the second right supplementary plate is respectively welded on both sides of the other end of the second vertical plate. The second vertical plate and the second left supplementary plate are correspondingly provided with a second tie rod left connecting hole, and the second vertical plate and the second right supplementary plate are correspondingly provided with a second tie rod right connecting hole.

5. The pull rod device for connecting the side wall of the hopper car and the ridge of the hopper according to claim 4, characterized in that: The second left supplementary plate and the second right supplementary plate are both L-shaped, and the second left supplementary plate and the second right supplementary plate are correspondingly arranged on the second vertical plate.

6. The pull rod device for connecting the side wall of the hopper car and the ridge of the hopper according to claim 5, characterized in that: One end of the second left patch plate and one end of the second right patch plate are fitted with the second vertical plate, and the lower sides of the other ends of the second left patch plate and the other ends of the second right patch plate are provided with arc-shaped notches, which are fitted with the side surfaces of the funnel ridge.

7. The rod device for connecting the side wall of the hopper car and the ridge of the hopper according to claim 1, characterized in that: The pull rod assembly includes a connecting tube and a U-shaped plate. Two U-shaped grooves are respectively opened at both ends of the connecting tube. The two U-shaped grooves are opened correspondingly along the radial direction of the connecting tube. The two ends of the U-shaped plate are respectively conformed to and welded to the groove walls of the two U-shaped grooves. A connecting hole is also set through the tube wall of the connecting tube.

8. The rod device for connecting the side wall of the hopper car and the ridge of the hopper according to claim 7, characterized in that: A patch plate is also provided at the end of the connecting pipe, and the patch plate is welded to the connecting pipe and the U-shaped plate.

9. The pull rod device for connecting the side wall of the hopper car and the ridge of the hopper according to claim 1, characterized in that: The first support assembly, the second support assembly and the tie rod assembly are all made of Q450NQR1 high-strength atmospheric corrosion-resistant steel.

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