A flexible railway freight car relief valve tie rod hanging seat device and railway freight car

Abstract

The invention discloses a flexible railway freight car relief valve tie rod hanging seat device and a railway freight car, comprising: at least one relief valve tie rod, the relief valve tie rod comprises a Z-shaped rod body, one end of the rod body is provided with a head matched with the relief valve, the other end of the rod body is vertically provided with a ring-shaped handle, at least one hanging seat structure, the hanging seat structure comprises: a base, one end of which is connected to a side beam, and the other end is exposed on a side of the side beam close to the relief valve, a hanging ring, one end of which is rotatably connected to the base through a reversing structure, and the other end is mutually sleeved with the handle, the reversing mechanism can at least move longitudinally along the vehicle body, and can make the hanging ring move transversely along the vehicle body, the hanging ring of the railway freight car relief valve tie rod hanger obtains the freedom of movement in the transverse and longitudinal directions of the vehicle body through the reversing structure, cooperates with the base to limit the movement range of the relief valve tie rod while ensuring sufficient activity space to adapt to the movement of the relief valve tie rod, and facilitates technical correction of the position angle of the relief valve tie rod.

Description

Technical Field

[0001] The present invention belongs to the technical field of railway freight car relief valve tie rod hangers, and more specifically, relates to a flexible railway freight car relief valve tie rod hanger seat device and a railway freight car. Background Art

[0002] The 120-type air control valve is the control center of the railway freight car brake system. The release valve lever is the main operating part for manual release in the vehicle air brake system. It is directly connected to the release valve handle of the 120-type air control valve to realize the manual release function of the vehicle. The layout of the release valve lever should not only facilitate the safe operation of the ground staff, but also avoid the poor release phenomenon caused by blockage during operation.

[0003] The layout and design of the existing relief valve tie rod are mainly based on the structure of railway freight cars. They are arranged in the middle of the freight car body structure or at the end of the freight car body structure and fixed by accessories such as the relief valve tie rod hanger. Due to the limitations of the car body structure, most models of railway freight cars such as general open cars, flat cars, box cars, tank cars, etc., have 120 type air control valves (see Figure 1 Serial number 10') is installed on the middle beam in the middle of the vehicle body chassis through its mounting seat (see Figure 1 No. 11') on the lower side (see Figure 1 ), the corresponding long end is inconsistent with the left relief valve pull rod made of 10mm diameter round steel (see Figure 1 , 3 No. 4') and the right relief valve lever (see Figure 1 The mounting hole of the flat end of the serial number 12') facing the inside of the vehicle is connected to the 120 type air control valve (see Figure 1 No. 10') relief valve handle (see Figure 1 , 3 Middle serial number 8') with split pin (see Figure 1 , 3 After the connection is made, the other ends of the left and right relief valve pull rods facing the outside of the vehicle extend to the side beams on both sides of the vehicle chassis (see Figure 1 To prevent the release valve pull rod from falling off, insert the ends of the release valve pull rod handles on the left and right sides of the vehicle into the L-shaped anti-falling plates (see Figure 1 After the mounting hole below the serial number 3' is opened, the handle is then simmered into a closed trapezoidal structure with a straight side length of 200mm, and its interface is sealed and welded by electric welding, and then two special rivets (see Figure 1 No. 5') and special rivet ring (see Figure 1 No. 6') Install the anti-drop plate (see Figure 1 The two holes above the serial number 3') are welded to the side beam (see Figure 1 No. 7') inner mounting base (see Figure 1 , 2 No. 1') on the hanger (see Figure 1 , 2 The two mounting holes set at the bottom of No. 2' are aligned and tightened with special riveting equipment to facilitate the operator to stand on either side of the car body to manually release the railway freight car 120 type air control valve by pushing and pulling the release valve lever handle to ensure that the vehicle braking and release working conditions are good.

[0004] However, the existing relief valve tie rod hanger and other fixed accessories and relief valve tie rods are deformed, welded, cracked, worn, fallen off and lost, inconvenient to repair, low in efficiency and high in cost. Figure 1 and Figure 3 ), left relief valve lever (see Figure 1 , 3 No. 4') and the right relief valve lever (see Figure 1 Insert the flat head (flat thickness 14mm) with the mounting hole facing the inside of the vehicle into the relief valve handle ( Figure 1 , 3 8') in the lower groove (the inner width of the groove is 14mm), and after the installation holes are aligned, they are connected with cotter pins. For the convenience of assembly, the left and right relief valve pull rods are inserted into the groove for assembly without any left and right position requirements, but only require the center of the relief valve pull rod hanger installed on the side beams on both sides of the vehicle body to be aligned with the center of the relief valve handle groove. Therefore, the theoretical lateral deviation distance of the center line of the relief valve pull rod at the left and right ends of the groove is up to 9mm (at this time, the heads of the two relief valve pull rods are tightly attached to the two sides of the relief valve handle groove without gap), that is, the maximum lateral deviation distance between the center of each relief valve pull rod and the center of the relief valve handle groove is 4.5mm, and the center of the handle of the left and right relief valve pull rods facing the outer end of the vehicle body (diameter is 10mm) is aligned with the L-shaped anti-slip plate installed on the hanger (see Figure 1 The maximum theoretical lateral offset of the center of the vertical long hole (diameter of 14mm) set below serial number 3' is 2mm. Taking into account the influencing factors such as the assembly size error of the 120-type air control valve mounting seat, base, hanger and L-shaped anti-slip plate, if there is a misalignment between the contact parts of the relief valve pull rod handles installed on both sides of the car body and the L-shaped anti-slip plate mounting holes (that is, the two points of the contact points of the relief valve pull rod handles on both sides and the three points of the relief valve handle connection points are not in a straight line), it will cause the relief valve pull rod handles on both sides or one side to be stuck and unable to return to their position when pulled by hand. If the relief valve pull rod handle is not restored to its position, the relief valve handle connected to the relief valve pull rod head with a cotter pin cannot be reset. Therefore, the sticking will cause problems such as poor braking and relief of railway freight cars. Summary of the invention

[0005] The purpose of the present invention is to provide a flexible railway freight car relief valve tie rod hanger device in view of the deficiencies in the prior art, so as to solve the problem that when the relief valve tie rod handle is not restored to its proper position, the relief valve handle connected to the relief valve tie rod head with a cotter pin cannot be reset, so the jamming may cause the railway freight car braking and relief failures.

[0006] In order to achieve the above object, the present invention provides a flexible railway freight car relief valve tie rod hanger device, comprising:

[0007] At least one relief valve pull rod, the relief valve pull rod comprising a Z-shaped rod body, one end of the rod body is provided with a head matched with the relief valve, and the other end of the rod body is vertically provided with a ring-shaped handle;

[0008] At least one suspension structure, the suspension structure comprising:

[0009] The base has one end connected to the side beam and the other end exposed on the side beam close to the relief valve;

[0010] A hanging ring, one end of which is rotatably connected to the base through a reversing structure, and the other end of which is sleeved with the handle;

[0011] The reversing mechanism can at least move along the longitudinal direction of the vehicle body, and can also enable the hanging ring to move along the transverse direction of the vehicle body.

[0012] Optionally, the hanging ring includes:

[0013] A U-shaped portion, wherein the handle is sleeved at the bend of the U-shaped portion;

[0014] Two avoidance connecting rods, one end of each of the two avoidance connecting rods is connected to the two ends of the U-shaped portion respectively, the other ends of each of the two avoidance connecting rods are provided with connecting holes, and one end of the reversing structure is located between the two connecting holes;

[0015] One end of the first round pin passes through the two connecting holes and the reversing structure and is exposed. The exposed end of the first round pin is provided with a first flat washer and a first cotter pin.

[0016] Optionally, the avoidance connecting rod is plate-shaped, located at the center of both ends of the U-shaped portion, and parallel to the handle.

[0017] Optionally, the base comprises:

[0018] The seat plate is in the shape of a groove and connected to the side beam at one end;

[0019] Two support plates, a gap is arranged at the other end of the seat plate, and concentric fixing holes are arranged on the two support plates.

[0020] Optionally, the reversing structure includes a reversing joint and a second round pin, and the reversing joint includes:

[0021] A rotating part, on which a second round pin hole is provided, and which is arranged between the two supporting plates;

[0022] A connecting portion, arranged at the lower end of the rotating portion, is provided with a hanging ring connecting hole, wherein the axis of the hanging ring connecting hole is perpendicular to the axis of the second round pin hole;

[0023] One end of the second round pin passes through the two fixing holes and the second round pin hole and is exposed, and the exposed end of the second round pin is provided with a second flat washer and a second cotter pin.

[0024] Optionally, the base comprises:

[0025] A top plate, one end of which is connected to the side beam;

[0026] A web plate, disposed at the lower end of the top plate;

[0027] The long waist hole is vertically arranged at one end of the web away from the side beam.

[0028] Optionally, the switching structure includes:

[0029] The lifting ring is U-shaped, and the bending part of the lifting ring is movably connected in the long waist hole. The adjacent sides at both ends of the lifting ring are respectively connected to the mutually distant sides of the two avoidance connecting rods.

[0030] Optionally, the web and the top plate form a T-shaped structure.

[0031] Optionally, the web and the top plate form an L-shaped structure.

[0032] A railway freight car, comprising:

[0033] A relief valve, the relief valve being arranged on one side of the center line of the railway freight car;

[0034] Two of the above-mentioned flexible railway freight car relief valve tie rod hanging seat devices;

[0035] Two tie rod suspension seat structures are symmetrically arranged on both sides of the railway freight car;

[0036] Two relief valve pull rods, the two relief valve pull rods have different lengths.

[0037] The present invention provides a flexible railway freight car relief valve tie rod hanging seat device, which has the following beneficial effects:

[0038] 1. The hanging ring of the railway freight car relief valve rod crane obtains the freedom of movement in the lateral and longitudinal directions of the car body through the reversing structure, and cooperates with the base to limit the movement range of the relief valve rod while ensuring sufficient activity space to adapt to the movement of the relief valve rod, which is convenient for technical correction of the position angle of the relief valve rod. It has a simple overall structure, light weight, easy manufacturing and maintenance, certain strength and rigidity, high reliability, does not affect the assembly and maintenance of other components, reduces environmental air pollution, minimizes the number and length of welds, and is convenient and quick to assemble and disassemble, saves time, is economical, and has high reliability, meeting the requirements of anti-loosening, anti-falling and protection.

[0039] Other features and advantages of the present invention will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] 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.

[0041] Figure 1 The present invention shows a structural schematic diagram of a railway freight car relief valve tie rod hanging seat device in the prior art.

[0042] Figure 2 The present invention shows a structural schematic diagram of a hanger of a railway freight car relief valve tie rod hanger device in the prior art.

[0043] Figure 3 A diagram showing a prior art railway freight car relief valve tie rod hanger device Figure 1 Schematic diagram of the A-direction structure.

[0044] DESCRIPTION OF NUMBERS IN THE PRIOR ART

[0045] 1', base; 2', hanger; 3', anti-drop plate; 4', left relief valve pull rod; 5', special rivet; 6', special rivet ring; 7', side beam in the chassis assembly; 8', relief valve handle; 9', cotter pin; 10', 120 type air control valve; 11', middle beam in the chassis assembly; 12', right relief valve pull rod.

[0046] Figure 4 A structural schematic diagram of a flexible railway freight car relief valve tie rod hanger device according to Example 1 of the present invention is shown.

[0047] Figure 5 A flexible railway freight car relief valve tie rod hanger device according to embodiment 1 of the present invention is shown. Figure 4 Right view of .

[0048] Figure 6A schematic structural diagram of a flexible railway freight car relief valve tie rod hanger device swinging along the longitudinal direction of the vehicle at an angle a according to Embodiment 1 of the present invention is shown.

[0049] Figure 7 A schematic structural diagram of a flexible railway freight car relief valve tie rod hanger device according to embodiment 1 of the present invention is shown along the lateral swing angle b of the vehicle.

[0050] Figure 8 A structural schematic diagram of a flexible railway freight car relief valve tie rod hanger device according to embodiment 1 of the present invention is shown along the lateral swing angle c of the vehicle.

[0051] Fig. 9 A schematic structural diagram of a flexible railway freight car relief valve tie rod hanger device swinging along the lateral angle d of the vehicle according to Embodiment 1 of the present invention is shown.

[0052] Fig.10 A structural schematic diagram of a base of a flexible railway freight car relief valve tie rod hanger device according to Example 1 of the present invention is shown.

[0053] Fig.11 A flexible railway freight car relief valve tie rod hanger device according to embodiment 1 of the present invention is shown. Fig.11 Right view of .

[0054] Fig.12 A structural schematic diagram of a reversing joint of a flexible railway freight car relief valve tie rod hanger device according to Example 1 of the present invention is shown.

[0055] Fig.13 A flexible railway freight car relief valve tie rod hanger device according to embodiment 1 of the present invention is shown. Fig.12 Right view of .

[0056] Fig.14 A schematic structural diagram of a hanging ring of a flexible railway freight car relief valve tie rod hanger device according to Example 1 of the present invention is shown.

[0057] Fig.15 A flexible railway freight car relief valve tie rod hanger device according to embodiment 1 of the present invention is shown. Fig.14 Right view of .

[0058] Fig.16 A schematic structural diagram of a relief valve tie rod of a flexible railway freight car relief valve tie rod hanging seat device according to Example 1 of the present invention is shown.

[0059] Fig.17 A flexible railway freight car relief valve tie rod hanger device according to embodiment 1 of the present invention is shown. Fig.16 Top view of the .

[0060] Fig.18 A flexible railway freight car relief valve tie rod hanger device according to embodiment 1 of the present invention is shown. Figure 4 Schematic diagram of the B-direction structure.

[0061] Fig.19 A structural schematic diagram of a flexible railway freight car relief valve tie rod hanger device according to embodiment 2 of the present invention is shown.

[0062] Fig. 20 A flexible railway freight car relief valve tie rod hanger device according to embodiment 2 of the present invention is shown. Fig.19 Right view of .

[0063] Fig.21 A schematic structural diagram of a base of a flexible railway freight car relief valve tie rod hanger device according to embodiment 2 of the present invention is shown.

[0064] Fig. 22 A flexible railway freight car relief valve tie rod hanger device according to embodiment 2 of the present invention is shown. Fig.21 Right view of .

[0065] Fig.23 A schematic structural diagram of a lifting ring of a flexible railway freight car relief valve tie rod lifting seat device according to Example 2 of the present invention is shown.

[0066] Fig.24 A flexible railway freight car relief valve tie rod hanger device according to embodiment 2 of the present invention is shown. Fig.23 Right view of .

[0067] Fig.25 A schematic structural diagram of a base of a flexible railway freight car relief valve tie rod hanger device according to embodiment 3 of the present invention is shown.

[0068] Description of reference numerals:

[0069] 1. Base; 2. Reversing joint; 3. Hanging ring; 4. Relief valve pull rod; 5. First round pin; 6. First flat washer; 7. First cotter pin; 8. Second round pin; 9. Second flat washer; 10. Second cotter pin; 11. Third round pin; 12. Third flat washer; 13. Third cotter pin; 14. Base; 15. Hanging ring;

[0070] 1.1, seat plate; 1.2, support plate;

[0071] 4.1, handle; 4.2, shaft; 4.3, head;

[0072] 14.1, top plate; 14.2, web plate. DETAILED DESCRIPTION

[0073] 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.

[0074] Example 1

[0075] like Figure 4-18 As shown, a flexible railway freight car relief valve tie rod hanging seat device comprises:

[0076] At least one relief valve pull rod 4, the relief valve pull rod 4 comprises a Z-shaped rod body 4.2, one end of the rod body 4.2 is provided with a head 4.3 matched with the relief valve, and the other end of the rod body 4.2 is vertically provided with a ring-shaped handle 4.1;

[0077] At least one suspension structure, the suspension structure comprising:

[0078] A base 1, one end of which is connected to the side beam, and the other end of which is exposed on a side of the side beam close to the relief valve;

[0079] The hanging ring 3 has one end rotatably connected to the base 1 through a reversing structure, and the other end of the hanging ring 3 is sleeved with the handle 4.1;

[0080] The reversing mechanism can at least move in the longitudinal direction of the vehicle body, and can also make the hanging ring 3 move in the transverse direction of the vehicle body.

[0081] Specifically, the hanging ring 3 obtains the freedom of movement in the lateral and longitudinal directions of the vehicle body through the reversing structure, and cooperates with the base 1 to limit the movement range of the relief valve rod 4 while ensuring sufficient activity space to adapt to the movement of the relief valve rod 4, so as to facilitate technical correction of the position angle of the relief valve rod 4. The overall structure is simple, light in weight, easy to manufacture and maintain, has certain strength and rigidity, high reliability, does not affect the assembly and maintenance of other components, reduces environmental air pollution, minimizes the number and length of welds, and the assembly and disassembly operations are convenient and quick, save time, are economical, and have high reliability, meeting the requirements of anti-loosening, anti-falling and protection.

[0082] Furthermore, the relief valve pull rod 4 is composed of a handle 4.1, a rod body 4.2 and a head 4.3. Since the 120-type air control valve is arranged on one side of the middle beam of the railway freight car chassis, and the relief valve and its handle are installed on the valve, in order to facilitate manual pulling of the relief valve pull rod 4 on both sides of the car body chassis to operate the relief valve, the relief valve pull rod 4 still adopts a structure with inconsistent lengths on the left and right and a Z-shaped structure with a certain height difference.

[0083] In this embodiment, the hanging ring 3 includes:

[0084] U-shaped portion, the handle 4.1 is sleeved at the bend of the U-shaped portion;

[0085] Two avoidance connecting rods, one end of the two avoidance connecting rods is respectively connected to the two ends of the U-shaped portion, the other ends of the two avoidance connecting rods are provided with connecting holes, and one end of the reversing structure is located between the two connecting holes;

[0086] One end of the first round pin 5 passes through the two connecting holes and the reversing structure and is exposed. The exposed end of the first round pin 5 is provided with a first flat washer 6 and a first cotter pin 7.

[0087] In this embodiment, the avoidance connecting rod is plate-shaped, located at the center of both ends of the U-shaped portion, and parallel to the handle 4.1.

[0088] In this embodiment, the base 1 includes:

[0089] The seat plate 1.1 is groove-shaped and connected to the side beam at one end;

[0090] Two support plates 1.2 are provided with a gap at the other end of the seat plate 1.1, and concentric fixing holes are provided on the two support plates 1.2.

[0091] In this embodiment, the reversing structure includes a reversing joint 2 and a second round pin 8, and the reversing joint 2 includes:

[0092] The rotating part is provided with a second round pin 8 hole and is arranged between the two supporting plates 1.2;

[0093] The connecting part is arranged at the lower end of the rotating part, and is provided with a connecting hole of the hanging ring 3, and the axis of the connecting hole of the hanging ring 3 is perpendicular to the axis of the hole of the second round pin 8;

[0094] One end of the second round pin 8 passes through the two fixing holes and is exposed outside the second round pin 8 hole, and the exposed end of the second round pin 8 is provided with a second flat washer 9 and a second cotter pin 10.

[0095] A railway freight car, comprising:

[0096] A relief valve, the relief valve being arranged on one side of the center line of the railway freight car;

[0097] Two of the above-mentioned flexible railway freight car relief valve tie rod hanging seat devices;

[0098] Two tie rod suspension seat structures are symmetrically arranged on both sides of the railway freight car;

[0099] Two relief valve pull rods 4 have different lengths.

[0100] When in use, the flexible railway freight car relief valve rod hanging seat device is symmetrically arranged near the lower inner side of the side beams on both sides of the vehicle body chassis, and the left and right sets of the device are completely the same in structure, size and accessories except that the length of the relief valve rod 4 is different. Each set of the device is mainly composed of a base 1, a reversing joint 2, a hanging ring 3, a relief valve rod 4, a first round pin 5, a first flat washer 6, a first cotter pin 7, a second round pin 8, a second flat washer 9, a second cotter pin 10, etc.

[0101] The device is symmetrically mounted on the side beams on both sides of the chassis, and the heads 4.3 of the two relief valve pull rods 4 are mounted on the relief valve handle 8' of the 120 type air control valve using the third round pin 11, the third flat washer 12 and the third cotter pin 13.

[0102] Among them, the base 1 is an important component of the relief valve tie rod 4, which is composed of a seat plate 1.1 and two support plates 1.2. The seat plate 1.1 is made of high-strength, atmospheric corrosion-resistant steel plate bent or pressed into a U-shaped structure. In order to minimize the welding workload, reduce welding smoke pollution and avoid the occurrence of falling off caused by welding quality problems, the seat plate 1.1 is made of integral steel plate or steel bending or pressing, which minimizes the weld length and welding workload; the support plates 1.2 are used in pairs and the inner distance is maintained at L size and then connected to the U-shaped end of the seat plate 1.1 facing the inside of the vehicle. A through hole connected to the second round pin 8 is set in the middle of the two support plates 1.2; when assembled, the U-shaped base 1 is opened downward so that its end is connected to the bottom of the vehicle body. The inner webs of the side beams on both sides of the frame and the lower wing edges are welded into a local box-type structure, which has sufficient strength and rigidity to meet the needs of fixing the relevant accessories of the relief valve tie rod 4 and supporting the relief valve tie rod 4; in order to avoid the arc interference between the cold-bent press-formed side beam web and the lower wing edge, the lower corners of the webs on both sides of the seat plate 1.1 facing the side beam are provided with a process chamfer larger than the above arc; under the premise of meeting the strength and rigidity requirements, in order to reduce the dead weight and ensure the lifting height, the seat plate 1.1 can adopt a structure with a large cross-section of the outer end web and a small cross-section of the inner end web and a transition connection in the middle of the webs at both ends.

[0103] The reversing joint 2 mainly serves to swing the relief valve tie rod 4 in the transverse and longitudinal directions of the vehicle body and to connect the relief valve tie rod 4 and its accessories. It is composed of an upper lifting ear and a lower lifting ear with the same thickness but different widths and lengths to form an integral structure. A round through hole connected to the second round pin 8 is set at the center of the arc of the upper lifting ear. In order to ensure that the upper lifting ear is inserted between the support plates 1.2 of the base 1 and is hinged with the second round pin 8 to each round through hole and can rotate flexibly, the thickness dimension F of the upper lifting ear must be smaller than the inner distance dimension L of the support plate 1.2 and a reasonable gap must be left; a round through hole perpendicular to the round through hole of the upper lifting ear and connected to the first round pin 5 is set at the center of the middle of the lower lifting ear. In order to ensure that the open U-shaped end of the hanging ring 3 is smoothly inserted into the lower lifting ear and is hinged with the first round pin 5 to each round through hole and can rotate flexibly, the width dimension G of the lower lifting ear must be smaller than the inner distance dimension C of the open U-shaped end of the hanging ring 3 and a reasonable gap must be left; the two hole distances of the upper lifting ear and the lower lifting ear can be adjusted as needed, but it must be ensured that the lower lifting ear of the reversing joint 2 does not exceed the lower wing edge of the side beam after assembly to avoid damage by external force.

[0104] The hanging ring 3 mainly connects the relief valve rod 4 and the reversing joint 2, and under the premise of ensuring normal manual operation of the relief valve, it has the function of swinging along the vehicle body in the horizontal and longitudinal directions within a certain range when the relief valve rod 4 handle 4.1 and the relief valve rod 4 collide with external forces or interfere with other forces. The round steel is processed from the middle into a U-shaped closed connection end with an inner distance greater than the diameter of the relief valve rod 4, and the other end is composed of two avoidance connecting rods composed of symmetrical open flat structure ends with an inner distance size C formed by the two ends of the round steel, and a round through hole is set in the middle of the two open flat structure ends, which is convenient for the first round pin 5 to be connected with the through hole set in the lower ear of the reversing joint 2. The length dimension E of the hanging ring 3 can be adjusted as needed. A handle 4.1 is set on the tail of the relief valve rod 4. In order to facilitate manual operation and improve the degree of humanization, the handle 4.1 adopts a closed runway-shaped ring structure and is in a vertical state. The handle 4.1 is connected to the hanging ring 3 after being welded under the vehicle, avoiding the welding defects existing after the electric spot welding of the existing vehicle fasteners and the occurrence of over-electric pitting accidents caused by improper operation. The relief valve pull rod 4 of the closed runway-shaped annular connection structure handle 4.1 replaces the existing left relief valve pull rod 4', right relief valve pull rod 12' trapezoidal closed welded handles and the rivet connection fastening structure used for hanging, and has the advantages of simple assembly and maintenance process, good economy, high efficiency and low cost.

[0105] In order to facilitate production and manufacturing and reduce procurement costs, the relief valve pull rod 4 is still made of existing automotive materials, namely, round steel with a diameter of 10 mm.

[0106] In order to prevent the round hole of the flat head 4.3 of the relief valve tie rod 4 from being worn out and falling off, without affecting the connection functions and the rotation of the head 4.3 of the relief valve tie rod 4, the thickness P of the flat part of the head 4.3 of the relief valve tie rod 4 is increased on the existing basis to improve the safety performance. The inner diameter m of the round hole is kept the same as the existing size, and the outer diameter n of the head 4.3 is increased accordingly. During assembly, the flat heads 4.3 of the relief valve tie rods 4 on both sides are inserted into the grooves of the relief valve handle 8', and the round holes of the flat heads 4.3 of the relief valve tie rods 4 on both sides are adjusted to align with the round holes on both sides of the relief valve handle 8'. The third round pin 11, the third flat washer 12 and the third cotter pin 13 are used to hinge the head 4.3 of the relief valve tie rod 4 and the relief valve handle 8' into an integrated anti-slip structure. After assembly, the tail of the cotter pin is split to 60°.

[0107] The following results were achieved:

[0108] aWhen the device of the invention is hit by external force from the outside of the vehicle such as cargo, a loader or a forklift during loading and unloading, since the reversing joint 2 does not extend beyond the lower wing edge of the side beam, the external force can only hit the two accessories, the hanging ring 3 and the handle 4.1 of the relief valve tie rod 4. If the external force hits the hanging ring 3, the hanging ring 3 drives the handle 4.1 of the relief valve tie rod 4 connected below to swing toward the vehicle at a certain angle c° along the round pin hinged to the reversing joint 2 at the upper part of the hanging ring 3; if the external force hits the handle 4.1 of the relief valve tie rod 4, the handle 4.1 of the relief valve tie rod 4 drives the hanging ring 3 connected above to swing toward the vehicle at a certain angle d° along the round pin hinged to the reversing joint 2 at the upper part of the hanging ring 3. In addition, the handle 4.1 of the relief valve tie rod 4 will also move up and down or forward and backward relative to the hanging ring 3. The above-mentioned hanging ring 3 and relief valve lever 4 handle 4.1 have the function of swinging to the inside and outside of the vehicle, so that the collision kinetic energy generated by the external force on one side of the vehicle body is converted into the potential energy of the hanging ring 3 and relief valve lever 4 handle 4.1 on this side swinging to a certain angle in the vehicle at the same initial speed when the external force collides, and the potential energy of the hanging ring 3 and relief valve lever 4 handle 4.1 on the other side connected by the relief valve handle 8' swinging to a certain angle outside the vehicle and the elastic potential energy generated by the restoring spring at the relief valve handle 8'; after the external force is cancelled, the hanging ring 3 and relief valve lever 4 on both sides return to the initial drooping relatively stable equilibrium state under the joint action of their own weight and the restoring force generated by the restoring spring at the relief valve handle 8'. The above-mentioned flexible connection function that the hanging ring 3 and relief valve lever 4 handle 4.1 on both sides swing to the inside and outside of the vehicle and the two can also move up and down or forward and backward relatively avoids the occurrence of deformation or damage caused by direct impact of external forces, and improves the safety of railway transportation. The invented device solves the problem that the existing railway freight car relief valve tie rod 4-hanging seat is easily impacted by cargo, loaders and forklifts during loading and unloading, causing the relief valve tie rod 4-hanging seat to be welded, cracked, broken or severely bent and deformed at the welding point, affecting the vehicle's braking relief performance and driving safety.

[0109] The device of the invention will not affect the manual relief function. When the relief valve pull rod 4 handle 4.1 on one side of the vehicle body is operated and pulled, the relief valve pull rod 4 handle 4.1 on this side drives the hanging ring 3 connected to it to swing to the outside of the vehicle at a certain angle b° around the round pin hinged between the hanging ring 3 and the reversing joint 2. At the same time, through the round pin hinged at the relief valve handle 8' connected to the relief valve pull rods 4 on both sides, the relief valve pull rod 4 handle 4.1 on the other side can drive the hanging ring 3 connected to it to swing to the inside of the vehicle at a certain angle b° around the round pin hinged with the reversing joint 2, which will not affect the function of the relief valve on either side. After the manual operation is canceled, the relief valve pull rods 4 handles 4.1 on both sides respectively drive the hanging ring 3 connected to it to move in the opposite direction around the round pin hinged with the reversing joint 2 under the action of their own weight and the restoring force of the relief valve handle 8' reset spring, until the relief valve pull rods 4 handles 4.1 on both sides, the hanging ring 3 and the relief valve handle 8' connected in the middle are all in a balanced and stable state of drooping force. Because the relief valve handle 8' can pull the relief valve pull rods 4 hingedly connected to it on both sides under the action of its reset spring, the relief valve handle 8' can be quickly reset without affecting the vehicle's braking and relief performance.

[0110] b The base 1 is an integral structure made of steel plates that are bent or pressed as a whole. It has a light weight and is only partially connected by segment welding. Compared with the existing suspension seat, it reduces the welding workload, reduces the pollution of electric welding smoke, and avoids the occurrence of falling off caused by welding quality problems. In addition, the partial segment welding of the suspension seat replaces the fully welded connection structure of the existing vehicle suspension seat, reducing the probability of open welding, cracks and welding defects at the welding of the hanger. It solves the problem that the existing relief valve tie rod suspension seat and the base 1' are fully welded during assembly due to their heavy weight, resulting in a high probability of cracks, open welding and other defects at the welding seams due to the large number of welds, which affects the strength of the suspension seat and is prone to causing traffic safety accidents.

[0111] c The base 1 of the invention adopts an integral corrugated structure of thick-walled steel plate with high strength and resistance to atmospheric corrosion, which improves its corrosion resistance, strength and rigidity, prolongs its service life and maintenance cycle, improves reliability and safety performance, and reduces maintenance costs. It solves the problem that the existing relief valve rod hanger and base 1' are made of ordinary materials, which cause their strength and rigidity to be insufficient to support the combined force of their cantilever force, the self-gravity of the relief valve rod and the swaying force of the vehicle after corrosion, causing deformation and cracking of the relief valve rod hanger and base 1'; at the same time, it solves the problem that the existing base 1' and hanger need to be removed during factory repair due to severe corrosion, and new parts need to be added during assembly, affecting the maintenance cost and maintenance efficiency.

[0112] d. To facilitate manual operation and improve the degree of humanization, the handle 4.1 of the relief valve rod 4 adopts a runway-shaped annular closed structure and is in a vertical state. The handle 4.1 is welded under the vehicle and then connected to the hanging ring 3, avoiding the welding defects and over-electric pitting accidents caused by improper operation of the existing vehicle fasteners after assembly and spot welding. The relief valve rod 4 of the runway-shaped annular closed structure handle 4.1 replaces the existing relief valve rod trapezoidal closed welding handle and the rivet connection fastening structure used in the hanging, and has the advantages of simple assembly and maintenance process, good economy, high efficiency and low cost.

[0113] eUnder the premise of not affecting the connection functions and the rotation of the head 4.3 of the relief valve tie rod 4, by increasing the size of the head 4.3 of the relief valve tie rod 4, and using round pins, washers and cotter pins to connect the head 4.3 of the relief valve tie rod 4 and the relief valve handle 8' assembled on both sides into an integrated anti-drop structure, the anti-drop safety performance of the head 4.3 is improved, and the occurrence of the existing relief valve tie rod 4 head 4.3 falling off due to excessive wear of the round hole is avoided. The use of round pins to replace the existing cotter pin connection structure not only improves the force of the pin shaft, but also reduces the wear of each connection hole and round pin. In subsequent maintenance, if the round pin is worn beyond the limit, only the round pin needs to be replaced, which improves the maintenance efficiency and reduces the maintenance cost. The problem of the relief valve tie rod falling off and losing when the round hole of the head of the existing relief valve tie rod facing the vehicle is worn beyond the limit, such as when the hanger at the handle of the relief valve tie rod 4 is broken and falls off at the same time is solved.

[0114] f In order to reduce the wear and friction resistance of the relief valve pull rod 4, it is convenient to limit the relief valve pull rod 4, improve its own wear resistance and the relief valve pull rod 4 can move flexibly under the action of manual or relief valve handle 8' restoring force, the connection between the relief valve pull rod 4 and the hanging ring 3, the hanging ring 3 and the reversing joint 2, and the reversing joint 2 and the base 1 can all swing freely, and each swinging contact part adopts a connection method mainly based on sliding or rolling friction. Compared with the existing vehicle's sawing-type moving structure along the horizontal direction of the vehicle body, the wear of the relief valve pull rod 4 is correspondingly reduced, the service life of the relief valve pull rod 4 and its accessories is extended, the replacement frequency is reduced, the manufacturing and repair cost is reduced, and the maintenance and replacement are convenient.

[0115] When disassembling the relief valve rod 4, first remove the round pin, flat washer and cotter pin connecting its head 4.3 with the relief valve handle 8', then remove the round pin, washer and cotter pin hinged with the hanging ring 3, and finally remove the hanging ring 3, and pull the relief valve rod 4 out from the bottom of the two sides of the vehicle body frame, which solves the problem that when dealing with the relief valve rod failure, it is time-consuming and laborious to remove the L-shaped anti-slip plate and the relief valve rod handle from the suspension seat as a whole; the invention has the advantages of convenient assembly and maintenance, high efficiency, low cost and good safety, and solves the problem that the existing L-shaped anti-slip plate and the relief valve rod suspension seat are fastened with special rivets, rings or bolts, and nuts and then spot welded to prevent falling off, which requires special riveting equipment to assemble or spot welding with an electric welder, resulting in It is impossible to disassemble quickly on site, and it is difficult to saw bolts or pull rivets with a saw blade, the labor intensity is high, and the disassembly is time-consuming and labor-intensive. The processing cycle is long and it is difficult to complete within the technical inspection time, which affects the timely processing of faults such as excessive wear of the valve pull rod. There are not only problems such as many parts, many manufacturing and maintenance processes, high costs and low efficiency, but also safety hazards and inconvenience in handling temporary faults. At the same time, it also solves the problem that other disassembly tools used in existing structures are inconvenient to carry, and are restricted by factors such as space and sparks during handling, which poses certain safety hazards. The mismatch of on-site maintenance tools increases the difficulty of handling, and to a certain extent restricts the enthusiasm for on-site handling of faulty vehicles, which is not conducive to improving the overall operating quality of vehicles.

[0116] The flexible sliding limit structure of the handle 4.1 of the relief valve pull rod 4 reduces the wear of its contact surface, avoids the wear of the relief valve pull rod body of existing vehicles, extends the service life and maintenance cycle of the relief valve pull rod 4, improves the maintenance efficiency of the relief valve pull rod 4, reduces the maintenance cost and improves the safety performance, and solves the problem of abnormal wear of the contact part between the existing relief valve pull rod handle and the L-shaped anti-detachment plate causing the relief valve pull rod handle to break, affecting driving safety, maintenance cost and maintenance efficiency.

[0117] The handle 4.1 of the relief valve pull rod 4 and the hanging ring 3 are equipped with a hinged limiting structure, which avoids the problems of spot welding after existing rivets or fasteners are assembled, and will not damage the accessories and mounting holes during disassembly. It has the advantages of simple disassembly, high efficiency and low cost, and solves the problem that the mounting holes may be easily burned when the mounting bolts or rivets are cut before disassembling the relief valve pull rod for maintenance, resulting in the need to weld and process the holes of the L-shaped anti-drop plate and the hanger or scrapping them, resulting in high maintenance costs.

[0118] g The flexible connection structure of the relief valve rod 4 has a micro-adjustment function. For example, when the relief valve rod 4 is stuck due to assembly and manufacturing errors, while pulling the handle 4.1 of the relief valve rod 4, under the action of the horizontal component of the external force of the force, the hanging ring 3 drives the handle 4.1 of the relief valve rod 4 through the reversing joint 2 to swing forward or backward at a certain angle a° along the longitudinal direction of the vehicle body around the round pin hinged to the base 1 until the force balance is reached, or in a free state, although the handle 4.1 of the relief valve rod 4 is in a vertical state, the existence of the force causes the hanging ring 3 and the reversing joint 2 connected thereto to swing at a certain angle along the longitudinal direction of the vehicle body around the round pin hinged to the base 1. Therefore, the flexible connection structure avoids the occurrence of the force of the relief valve rod of the existing vehicle, and solves the problem of the force of the existing structure causing the effort and difficulty in pulling. The device is also equipped with a relief valve pull rod 4 that has a swinging function within a certain range. This eliminates the need for extra force, making it easier to pull the relief valve pull rod 4, thereby solving the problem of the relief valve handle 8' being unable to be reset due to the jamming of the relief valve pull rod of existing railway freight cars, which further leads to poor braking and relief failures of railway freight cars.

[0119] hSince the base 1 is formed by integrally pressing steel plates of the same material and thickness, the structure is simplified, the types of steel sections and plates are reduced, and the problem that the existing relief valve tie rod base 1' and the hanging seat assembly welding structure requires multiple manufacturing processes such as cutting, bending and welding of multiple pieces of steel sections and plates, and there are problems such as cumbersome raw material procurement and storage and retrieval, time-consuming and labor-intensive, long manufacturing cycle, low production efficiency, difficult quality assurance, and high manufacturing or maintenance costs is solved.

[0120] i If the upper annular portion of the relief valve lever handle 4.1 in contact with the hanging ring 3 is worn beyond the limit, in order to save costs, the relief valve handle 8' can be rotated 180° by flame heat adjustment or cold process, so that the upper ring that was originally worn beyond the limit is turned downward and the lower ring is turned upward.

[0121] The device of the invention has a light weight, and compared with the existing vehicle, the base 1 of the invention has a smaller bearing force, so the base 1 has a simple structure, is easy to manufacture, has high reliability, and does not affect the assembly and maintenance of other components.

[0122] k The device of the invention meets the requirements of anti-loosening and anti-falling. The disassembly and assembly tools of the relief valve pull rod 4 are easy to carry, and meet the requirements of field operations without large tools. The device is easy to manufacture, repair, and inspect, and meets the requirements of high reliability and high safety; the suspended accessories of the invention have light weight, and the main active contact points all adopt a linear contact sliding friction structure, and each contact surface can be coated with lubricating oil, which reduces the wear of the connecting contact surfaces of each accessory, extends the maintenance cycle of each accessory, and reduces the maintenance cost.

[0123] The device of the invention will not affect the components and functions of the braking device, and is convenient for factories and vehicle depots to retrofit and repair existing railway freight cars.

[0124] The device has a symmetrical structure with good stress, high strength, high rigidity, long service life, light weight, good processability, easy manufacturing and maintenance, and saves time. It has the characteristics of high assembly and disassembly efficiency, low cost, and good economy of the relief valve tie rod 4. It effectively solves the problems of low assembly and disassembly efficiency and high manufacturing and repair costs of the relief valve tie rod 4 of the existing device. The symmetrical structural design of the device improves the processability, aesthetics, and commercialization.

[0125] The relief valve pull rod 4 of the device of the invention does not need to be connected with fasteners, which avoids the problem that the existing vehicle depots and other units, due to the lack of special riveting equipment, use bolts and nuts to connect and then use electric welding for spot welding instead of rivets and collars to connect and fasten the solution, and the existing special rivets, collars or bolts and nuts cannot be reused, the manufacturing and maintenance costs are high, and the overall economic benefits are poor; because the movable parts of the device of the invention are not connected or spot-fastened by electric welding in the subsequent maintenance, it completely solves the problem that when the existing steel relief valve pull rod 4-handle is assembled with the hanging assembly and then connected with welding or bolts, nuts and other fasteners and then use electric welding for spot welding instead of rivets and collars, when the local line is improperly processed, there is a problem that pitting corrosion of the relief valve and the bogie bearing due to the passage of current affects the driving safety.

[0126] oThe device has a simple structure. The base 1 is manufactured by bending or pressing high-strength, corrosion-resistant steel plates, which is convenient for batch manufacturing. Each connected accessory is light in weight, and each wear surface adopts linear contact with sliding friction as the main method, thereby reducing friction resistance. Each contact surface is coated with lubricating oil to reduce the wear of each contact surface. It is easy to assemble and disassemble, has good economy, and has a high reuse rate during maintenance. It can effectively reduce procurement and transportation costs, is conducive to improving assembly quality, and saves manufacturing and maintenance costs.

[0127] The device has high reliability, long service life, and safety, and meets the requirements of anti-loosening and anti-falling. The technology can be applied in batches on newly built railway freight cars, and can also be transformed and promoted on existing railway freight cars.

[0128] The installation sequence and usage functions are as follows:

[0129] First, the webs of the base 1 on both sides are facing downwards, and the centers of the through holes are aligned with the corresponding lines on the side beams along the transverse center line of the vehicle body chassis, and the ends and the lower edges of the webs are respectively welded to the inner webs and the lower wing edges of the side beams to form an integrated structure. Then, the upper lifting ears of the reversing joint 2 are inserted between the support plates 1.2 of the base 1 and the round through holes are aligned. The upper lifting ears of the reversing joint 2 are hinged to the base 1 using the second round pin 8, the second flat washer 9 and the second cotter pin 10, and then the two legs of the cotter pin are split to 60 degrees; then, the relief valve pull rods 4 on both sides are placed transversely along the vehicle body chassis, and the handles 4. 1 end is facing the side beam of the vehicle body, and its two head 4.3 flat ends are inserted into the grooves of the relief valve handle 8'. After the holes are aligned, the third round pin 11, the third flat washer 12 and the third cotter pin 13 are used to connect them. After assembly, the tail of the cotter pin is split 60°; then, the hanging ring 3 is inserted into the handle 4.1 of the relief valve pull rod 4, and its open flat end is inserted upward into the lower lifting ear of the reversing joint 2. After the holes are aligned, the first round pin 5, the first flat washer 6 and the first cotter pin 7 are used to connect them. After assembly, the tail of the cotter pin is split 60°. At this time, the assembly of the relief valve pull rod 4 is completed.

[0130] In order to improve the assembly efficiency of the whole vehicle line, the hanging ring 3 and the reversing joint 2, the relief valve pull rod 4 handle 4.1, the first round pin 5, the first flat washer 6 and the first cotter pin 7 can be assembled in advance in the process under the vehicle. After the assembly under the vehicle is completed, the second round pin 8, the second flat washer 9 and the second cotter pin 10 are used to connect the reversing joint 2 with the base 1 assembled on the vehicle in advance.

[0131] The disassembly process of the device to relieve the valve tie rod 4 is the opposite of its installation process. During maintenance, if the connecting round pins are intact and the wear is not excessive, they do not need to be removed and replaced with new ones.

[0132] Example 2

[0133] Figure 19-24 A structural schematic diagram of a suspension seat device for a flexible railway freight car relief valve tie rod 4 according to embodiment 2 of the present invention is shown.

[0134] like Figure 19-24 As shown, the difference between the flexible railway freight car relief valve tie rod hanger device in this embodiment and the flexible railway freight car relief valve tie rod hanger device in embodiment 1 is:

[0135] In this embodiment, the base 14 includes:

[0136] A top plate 14.1, one end of which is connected to the side beam;

[0137] The web 14.2 is arranged at the lower end of the top plate 14.1;

[0138] The long waist hole is vertically arranged at the end of the web 14.2 away from the side beam.

[0139] Specifically, a T-shaped symmetrical structure is adopted which is connected by a top plate 14.1 and a web 14.2, and a vertical oblong hole is provided in the middle of the end of the web 14.2 facing the inside of the vehicle, and the oblong hole mainly serves to facilitate the insertion and connection of the lifting ring 15 and enable the lifting ring 15 to swing a certain angle along the longitudinal direction of the vehicle body; in order to simplify the structure, reduce the welding workload and the length of the weld, reduce the air pollution caused by welding smoke, avoid the occurrence of welding defects, and reduce the manufacturing cost, the base 1 can also adopt an overall bending solution.

[0140] In this embodiment, the switching structure includes:

[0141] The lifting ring 15 is U-shaped, and the bending part of the lifting ring 15 is movably connected in the long waist hole. The adjacent sides of the two ends of the lifting ring 15 are respectively connected to the mutually away sides of the two avoidance connecting rods.

[0142] Specifically, the lifting ring 15 mainly connects the hanging ring 3 and the web 14.2 of the base 14, provides the hanging ring 3 with longitudinal freedom and supplements the lateral freedom, and under the premise of ensuring normal manual operation of the relief valve, it has the function of swinging along the vehicle body in the lateral and longitudinal directions within a certain range when the lifting ring 15 and the handle 4.1 of the relief valve pull rod 4 collide with external forces or interfere with other forces. The lifting ring 15 is processed from a section of round steel from the middle into a U-shaped closed end with an inner distance dimension K larger than the outer distance dimension of the open flat structure end of the hanging ring 3 and retaining a certain gap to facilitate flexible rotation, and the other end is composed of two ends of the round steel with an asymmetric open flat structure end with an inner distance dimension K, and a round through hole is set in the middle of the two open flat structure ends, so as to facilitate the use of the first round pin 5 to connect with the through hole set at the open end of the hanging ring 3. The length of the lifting ring 15 can be adjusted as needed.

[0143] In this embodiment, the web 14.2 and the top plate 14.1 form a T-shaped structure.

[0144] Example 3

[0145] Fig.25 A structural schematic diagram of a suspension seat device for a flexible railway freight car relief valve tie rod 4 according to embodiment 2 of the present invention is shown.

[0146] like Fig.25 As shown, the difference between the flexible railway freight car relief valve tie rod hanger device in this embodiment and the flexible railway freight car relief valve tie rod hanger device in Example 2 is:

[0147] In this embodiment, the web 14.2 and the top plate 14.1 form an L-shaped structure.

[0148] A railway freight car, comprising:

[0149] A relief valve, the relief valve being arranged on one side of the center line of the railway freight car;

[0150] Two of the above-mentioned flexible railway freight car relief valve tie rod hanging seat devices;

[0151] Two tie rod suspension seat structures are symmetrically arranged on both sides of the railway freight car;

[0152] Two relief valve pull rods 4 have different lengths.

[0153] When in use, the base 1 is T-shaped or L-shaped. When assembling, the center of the web 14.2 is aligned with the corresponding line on the side beam along the transverse center line of the vehicle body chassis, and the end and the lower edge of the web 14.2 are respectively welded to the inner web and the lower wing edge of the side beam to form an integrated structure. Then, one of the flat open ends of the lifting ring 15 is inserted into the vertical oblong hole set in the web 14.2, and the two open flat ends of the lifting ring 15 are inserted into the outer sides of the two open flat ends of the hanging ring 3 connected to the handle 4.1 of the relief valve pull rod 4, and after the holes are aligned, the first round pin 5, the first flat washer 6 and the first cotter pin 7 are used for connection, and then the two legs of the cotter pin are split at an angle of 60°.

[0154] In order to improve the versatility and interchangeability of parts and components and reduce manufacturing and maintenance costs, the round pins, washers and cotter pins of the device of the invention adopt standard parts, which improves the efficiency of vehicle manufacturing and repair, while reducing the cost of vehicle manufacturing and repair, and eliminates the hidden danger of the existing vehicle relief valve pull rod 4- and the suspension seat falling off and affecting driving safety.

[0155] The device has anti-loosening and anti-falling functions, has good inherent safety, and can keep itself from being damaged when impacted by external forces, thus ensuring the safety of railway freight cars.

[0156] The device is designed as a symmetrical structure, which improves the processability and aesthetics. At the same time, the relief valve rod 4 and the relief valve handle 8' in the device are connected in the same way as existing vehicles, which improves the assembly efficiency of the relief valve rod 4 and reduces the manufacturing cost.

[0157] The base of the device adopts an integral profiled structure with very little welding. It is easier to assemble and position than the existing vehicle's relief valve pull rod 4 hangers, has a light weight, high efficiency, and low cost. It avoids the occurrence of cracks and falling off caused by existing welding quality defects, reduces welding workload, welding strength and cost, avoids environmental pollution caused by a large amount of welding smoke, and improves the working environment of assembly workers.

[0158] The closed end of the handle 4.1 of the relief valve pull rod 4 is welded under the car and can be quickly removed from the car during maintenance, avoiding the problem that if the protection measures are not appropriate when welding fasteners, the relief valve spring or the bearing on the bogie will be over-electrified and cause electrical corrosion, which will affect the braking relief or operation of the railway freight car and bring hidden dangers to driving safety.

[0159] The connection between the relief valve rod 4 and the hanging ring 3, the hanging ring 3 and the reversing joint 2, and the reversing joint 2 and the base 1 can all swing freely, and each swinging contact part adopts a connection method mainly based on sliding or rolling friction. Compared with the existing vehicle's sawing-type moving structure along the transverse direction of the vehicle body, the wear of the relief valve rod 4 is reduced accordingly, the service life of the relief valve rod 4 and its accessories is extended, the replacement frequency is reduced, and the flexible connection structure of the relief valve rod 4 can produce micro-adjustments, avoiding the occurrence of existing misalignment, and solving the problem of misalignment in the existing structure causing difficulty and effort in pulling.

[0160] When operating and pulling the relief valve pull rod 4 on one side, the round pin hinged at the relief valve handle 8' which is commonly connected to the relief valve pull rods 4 on both sides can drive the relief valve pull rod 4 on the other side to move, which will not affect the function of operating the relief valve on either side, and after the manual operation is canceled, the relief valve handle 8' can pull the relief valve pull rods 4 hingedly connected to it on both sides under the action of its reset spring so that the relief valve handle 8' can be quickly reset, which will not affect the vehicle's braking and relief performance.

[0161] The following results were achieved:

[0162] The device of the invention is easy to use and maintain, has high efficiency, light weight, low cost, and good safety. It not only solves the problems of the existing relief valve hanger and relief valve pull rod, but also solves the existing driving safety problems caused by the untimely handling of the faulty vehicle. The base is made of high-strength atmospheric corrosion-resistant steel plate to improve the corrosion resistance, extend the service life and the number of reuses. Compared with the existing hanger, the base uses a small amount of local welding instead of the existing full welding connection method, which reduces the welding workload and reduces the pollution of welding harmful gases to the atmosphere.

[0163] The anti-collision protection principle of the device is as follows:

[0164] When the device of the invention is hit by external force from the outside of the vehicle such as cargo, loaders and forklifts during loading and unloading, since the reversing joint 2 does not extend beyond the lower wing edge of the side beam, the external force can only hit the two accessories, the hanging ring 3 and the handle 4.1 of the relief valve pull rod 4. If the external force hits the hanging ring 3, the hanging ring 3 drives the handle 4.1 of the relief valve pull rod 4 connected below to swing toward the inside of the vehicle at a certain angle c° along the round pin hinged to the reversing joint 2 at the upper part of the hanging ring 3; if the external force hits the handle 4.1 of the relief valve pull rod 4, the handle 4.1 of the relief valve pull rod 4 drives the hanging ring 3 connected above to swing toward the inside of the vehicle at a certain angle d° along the round pin hinged to the reversing joint 2 at the upper part of the hanging ring 3. In addition, the handle 4.1 of the relief valve pull rod 4 will also move up and down or forward and backward relative to the hanging ring 3. The above-mentioned hanging ring 3 and relief valve lever 4 handle 4.1 have the function of swinging to the inside and outside of the vehicle, so that the collision kinetic energy generated by the external force on one side of the vehicle body is converted into the potential energy of the hanging ring 3 and relief valve lever 4 handle 4.1 on this side swinging to a certain angle in the vehicle at the same initial speed when the external force collides, and the potential energy of the hanging ring 3 and relief valve lever 4 handle 4.1 on the other side connected by the relief valve handle 8' swinging to a certain angle outside the vehicle and the elastic potential energy generated by the restoring spring at the relief valve handle 8'; after the external force is cancelled, the hanging ring 3 and relief valve lever 4 on both sides return to the initial drooping relatively stable equilibrium state under the joint action of their own weight and the restoring force generated by the restoring spring at the relief valve handle 8'. The above-mentioned flexible connection function that the hanging ring 3 and relief valve lever 4 handle 4.1 on both sides swing to the inside and outside of the vehicle and the two can also move up and down or forward and backward relatively avoids the occurrence of deformation or damage caused by direct impact of external forces, and improves the safety of railway transportation. The invented device solves the problem that the existing railway freight car relief valve tie rod hanger is easily hit by cargo, loaders and forklifts during loading and unloading, causing the relief valve tie rod hanger to open, crack, break or bend severely at the welding point, affecting the vehicle's braking relief performance and driving safety.

[0165] The opening of the 4 handlebars of the relief valve lever is welded under the vehicle to avoid the problems of high maintenance cost, inconvenient maintenance and hidden dangers of driving safety in existing vehicles. The principle is as follows:

[0166] When disassembling the relief valve rod 4, first remove the round pin, flat washer and cotter pin connecting its head 4.3 with the relief valve handle 8', then remove the round pin, washer and cotter pin hinged with the hanging ring 3, and finally remove the hanging ring 3, and pull the relief valve rod 4 out from the bottom of the two sides of the vehicle body frame, which solves the problem that when dealing with the relief valve rod failure, it is time-consuming and laborious to remove the L-shaped anti-slip plate and the relief valve rod 4 handle from the suspension seat as a whole; the invention has the advantages of convenient assembly and maintenance, high efficiency, low cost and good safety, and solves the problem that the existing L-shaped anti-slip plate and the relief valve rod suspension seat are fastened with special rivets, rings or bolts, and nuts and then spot welded to prevent falling off, which requires special riveting equipment to assemble or spot welding with an electric welder, resulting in It is impossible to disassemble quickly on site, and it is difficult to saw bolts or pull rivets with a saw blade, the labor intensity is high, and the disassembly is time-consuming and labor-intensive. The processing cycle is long and it is difficult to complete within the technical inspection time, which affects the timely processing of faults such as excessive wear of the valve pull rod. There are not only problems such as many parts, many manufacturing and maintenance processes, high costs and low efficiency, but also safety hazards and inconvenience in handling temporary faults. At the same time, it also solves the problem that other disassembly tools used in existing structures are inconvenient to carry, and are restricted by factors such as space and sparks during handling, which poses certain safety hazards. The mismatch of on-site maintenance tools increases the difficulty of handling, and to a certain extent restricts the enthusiasm for on-site handling of faulty vehicles, which is not conducive to improving the overall operating quality of vehicles.

[0167] In order to facilitate manual operation and improve the degree of humanization, the handle 4.1 of the relief valve rod 4 adopts a runway-shaped annular closed structure and is in a vertical state. The handle 4.1 is welded under the vehicle and then connected to the hanging ring 3. The relief valve rod 4 does not need to be connected with fasteners, avoiding the welding defects and over-electric pitting accidents caused by improper operation of the existing vehicle fasteners after assembly and then taking spot welding measures. The relief valve rod 4 of the runway-shaped annular closed structure handle 4.1 replaces the existing relief valve rod trapezoidal closed welding handle and the rivet connection fastening structure used for its hanging, and has the advantages of simple assembly and maintenance process, good economy, high efficiency and low cost. The invention avoids the problems of existing vehicle depots and other units that do not have special rivet equipment and use bolts and nuts to connect and then use electric welding for spot welding instead of rivets and collars. The installation of special rivets, collars or bolts, nuts cannot be reused, the manufacturing and maintenance costs are high, and the comprehensive economic benefits are poor.

[0168] The principle of relieving the contact of the valve rod 4 to avoid excessive wear and tear on existing vehicles is as follows:

[0169] The suspension accessories of the invention are light in weight, and the handle 4.1 of the relief valve pull rod 4 and the hanging ring 3 adopt a line contact limiting structure with flexible sliding friction as the main mechanism, and lubricating oil is used in combination with the contact surfaces of each connection to reduce the wear of the contact surfaces, thereby avoiding the wear of the relief valve pull rod body of existing vehicles, extending the service life and maintenance cycle of the relief valve pull rod 4, improving the maintenance efficiency of the relief valve pull rod 4, reducing the maintenance cost and improving the safety performance, and solving the problem that the abnormal wear of the contact part between the existing relief valve pull rod handle and the L-shaped anti-detachment plate causes the relief valve pull rod handle to break, affecting driving safety, maintenance cost and maintenance efficiency.

[0170] If the upper annular portion of the handle 4.1 of the relief valve rod 4 in contact with the hanging ring 3 is worn beyond the limit, the handle 4.1 can be rotated 180° using flame heat adjustment or cold process, so that the upper ring that was originally worn beyond the limit is turned downward, and the lower ring is turned upward, reducing the number of replacement times of the handle 4.1 of the relief valve rod 4 due to excessive wear and saving maintenance costs.

[0171] The flexible connection and anti-slip structure hinged by round pins and cotter pins avoids the problems existing in spot welding after existing rivets or fasteners are assembled, and will not damage the accessories during disassembly, and has the advantages of simple disassembly, high efficiency and low cost, etc., and solves the problem that the mounting holes are easily burned when the mounting bolts or rivets are cut before the existing disassembly of the relief valve pull rod for maintenance, resulting in the need to weld and process the holes of the L-shaped anti-slip plate and the hanger or scrapping them, resulting in high maintenance costs.

[0172] The principle of relieving the valve pull rod 4 from falling off due to wear towards the head 4.3 in the vehicle is as follows:

[0173] Under the premise of not affecting the connection functions and the rotation of the head 4.3 of the relief valve tie rod 4, by increasing the size of the head 4.3 of the relief valve tie rod 4, and using round pins, washers and cotter pins to connect the head 4.3 of the relief valve tie rod 4 assembled on both sides and the relief valve handle 8' into an integrated anti-drop structure, the anti-drop safety performance of the head 4.3 is improved, and the occurrence of the existing relief valve tie rod 4 head 4.3 falling off due to excessive wear of the round hole is avoided. The use of round pins to replace the existing cotter pin connection structure not only improves the force of the pin shaft, but also reduces the wear of each connection hole and round pin. In subsequent maintenance, if the round pin is worn beyond the limit, only the round pin needs to be replaced, which improves the maintenance efficiency and reduces the maintenance cost. The problem of the relief valve tie rod 4 falling off and losing when the round hole of the head 4.3 of the existing relief valve tie rod 4 facing the vehicle is worn beyond the limit, such as when the hanger at the handle of the relief valve tie rod 4 is broken and falls off at the same time is solved.

[0174] Principle of preventing the valve lever 4 from getting stuck:

[0175] The flexible connection structure of the relief valve rod 4 has a micro-adjustment function. For example, when the relief valve rod 4 is stuck due to assembly and manufacturing errors, when the handle 4.1 of the relief valve rod 4 is pulled, under the action of the horizontal component of the external force of the force, the hanging ring 3 drives the handle 4.1 of the relief valve rod 4 through the reversing joint 2 to swing forward or backward at a certain angle a° along the longitudinal direction of the vehicle body around the round pin hinged to the base 1 until the force balance is reached, or in a free state, although the handle 4.1 of the relief valve rod 4 is in a vertical state, due to the existence of the force, the hanging ring 3 and the reversing joint 2 connected thereto will swing at a certain angle along the longitudinal direction of the vehicle body around the round pin hinged to the base 1. Therefore, the flexible connection structure avoids the occurrence of the relief valve rod 4 of the existing vehicle being stuck, and solves the problem of the existing structure having the force causing the pulling to be strenuous and difficult. The device is also equipped with a relief valve pull rod 4 that has a swinging function within a certain range. This eliminates the need for extra force, making it easier to pull the relief valve pull rod 4, thereby solving the problem of the relief valve handle 8' being unable to be reset due to the jamming of the relief valve pull rod of existing railway freight cars, which further leads to poor braking and relief failures of railway freight cars.

[0176] Improve corrosion resistance and wear resistance principle:

[0177] The base is made of high-strength, corrosion-resistant thick-walled steel plates connected by press-forming. It has sufficient strength, rigidity and corrosion resistance, which can significantly extend the maintenance cycle, improve the maintenance efficiency and reduce the maintenance cost.

[0178] Each hanging connection accessory has a light weight, and each wear surface adopts a flexible connection method with a linear contact and gap with sliding friction as the main method, so the friction resistance is reduced. After each contact surface is coated with lubricating oil, the wear of each contact surface can be reduced. It is easy to assemble and disassemble, has good economy, and has a high reuse rate during maintenance. It can effectively reduce procurement and transportation costs, which is beneficial to improving assembly quality and saving manufacturing and maintenance costs.

[0179] 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 flexible railway freight car relief valve tie rod hanger device, characterized in that: include: At least one relief valve pull rod, the relief valve pull rod comprising a Z-shaped rod body, one end of the rod body is provided with a head matched with the relief valve, and the other end of the rod body is vertically provided with a ring-shaped handle; At least one suspension structure, the suspension structure comprising: The base has one end connected to the side beam and the other end exposed on the side beam close to the relief valve; A hanging ring, one end of which is rotatably connected to the base through a reversing structure, and the other end of which is sleeved with the handle; The reversing structure can at least move along the longitudinal direction of the vehicle body, and can also make the hanging ring move along the transverse direction of the vehicle body; The base comprises: The seat plate is in the shape of a groove and connected to the side beam at one end; Two support plates, a gap is arranged at the other end of the seat plate, and concentric fixing holes are arranged on the two support plates; The reversing structure includes a reversing joint and a second round pin, and the reversing joint includes: A rotating part, on which a second round pin hole is provided, and which is arranged between the two supporting plates; A connecting portion, arranged at the lower end of the rotating portion, is provided with a hanging ring connecting hole, wherein the axis of the hanging ring connecting hole is perpendicular to the axis of the second round pin hole; One end of the second round pin passes through the two fixing holes and the second round pin hole and is exposed, and the exposed end of the second round pin is provided with a second flat washer and a second cotter pin.

2. A flexible railway freight car relief valve tie rod hanger device, characterized in that: include: At least one relief valve pull rod, the relief valve pull rod comprising a Z-shaped rod body, one end of the rod body is provided with a head matched with the relief valve, and the other end of the rod body is vertically provided with a ring-shaped handle; At least one suspension structure, the suspension structure comprising: The base has one end connected to the side beam and the other end exposed on the side beam close to the relief valve; A hanging ring, one end of which is rotatably connected to the base through a reversing structure, and the other end of which is sleeved with the handle; The reversing structure can at least move along the longitudinal direction of the vehicle body, and can also make the hanging ring move along the transverse direction of the vehicle body; The hanging ring comprises: A U-shaped portion, wherein the handle is sleeved at the bend of the U-shaped portion; Two avoidance connecting rods, one end of each of the two avoidance connecting rods is connected to the two ends of the U-shaped portion respectively, the other ends of each of the two avoidance connecting rods are provided with connecting holes, and one end of the reversing structure is located between the two connecting holes; A first round pin, one end of which passes through the two connecting holes and the reversing structure and is exposed, and a first flat washer and a first cotter pin are provided at the exposed end of the first round pin; The base comprises: A top plate, one end of which is connected to the side beam; A web plate, disposed at the lower end of the top plate; A long waist hole is vertically arranged at one end of the web away from the side beam; The commutation structure comprises: The lifting ring is U-shaped, and the bending part of the lifting ring is movably connected in the long waist hole. The adjacent sides at both ends of the lifting ring are respectively connected to the mutually distant sides of the two avoidance connecting rods.

3. A flexible railway freight car relief valve tie rod hanger device according to claim 2, characterized in that: The avoidance connecting rod is plate-shaped, located at the center of both ends of the U-shaped portion, and parallel to the handle.

4. A flexible railway freight car relief valve tie rod hanger device according to claim 2, characterized in that: The web plate and the top plate form a T-shaped structure.

5. A flexible railway freight car relief valve tie rod hanger device according to claim 2, characterized in that: The web plate and the top plate form an L-shaped structure.

6. A railway freight car, characterized in that: include: A relief valve, the relief valve being arranged on one side of the center line of the railway freight car; Two flexible railway freight car relief valve tie rod hanger devices according to any one of claims 1 to 5; Two tie rod suspension seat structures are symmetrically arranged on both sides of the railway freight car; Two relief valve pull rods, the two relief valve pull rods have different lengths.

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