Bogie and railway vehicle

Abstract

The application provides a bogie and a railway vehicle, wherein the bogie comprises a side beam; the side beam comprises a side beam body and an air spring mounting portion, and the air spring mounting portion is provided with an air spring mounting hole; an elastic member is arranged in the air spring mounting hole; an air spring; the bottom of the air spring is provided with an air spring guide column, the air spring guide column is inserted into the air spring mounting hole and is in contact with the elastic member; when the external load borne by the air spring is a first load, the air spring falls on the top surface of the air spring mounting portion, and the air spring guide column exerts pressure on the elastic member to compress the elastic member; when the external load borne by the air spring is a second load, the rebound force of the elastic member lifts the air spring upward to leave an adjustment gap between the air spring and the air spring mounting portion; and the first load is greater than the second load. The bogie and the railway vehicle provided by the application are more convenient for arranging an adjustment pad between the air spring and the side beam.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of rail vehicle running technology, in particular to a bogie and a rail vehicle. BACKGROUND

[0002] The bogie is one of the important components of the rail vehicle, and is used for bearing the vehicle body of the rail vehicle and realizing running and steering functions. The bogie frame and the vehicle body are provided with a secondary suspension device, which is usually an air spring. The air spring is provided with an air chamber. When the load of the vehicle body changes, a corresponding pressure is generated on the air spring, and the load applied to the vehicle body is buffered through the volume change of the air chamber.

[0003] Before the new bogie is delivered or after the wheels are ground after a period of vehicle operation, the height of the air spring needs to be adjusted. The commonly used method is to insert an adjusting pad between the air spring and the air spring seat plate surface of the bogie frame. The mass of the air spring is usually 100 kg. In actual operation, without a bogie lifting machine, a jack is first used to lift the parts at the top of the air spring upward, so that the parts are separated from the air spring. Then another tool is used to lift the air spring upward, so that the air spring is separated from the bogie frame and the adjusting pad is arranged. The traditional scheme needs to use two sets of lifting equipment to perform two-step lifting operation, which is low in efficiency. Moreover, manual operation is needed, and the workload is large, the working process is heavy, the operation speed is slow, and the air spring is also damaged to a certain extent. SUMMARY

[0004] In order to solve one of the above technical defects, the bogie and the rail vehicle are provided in the embodiments of the present application.

[0005] According to a first aspect of the embodiments of the present application, a bogie is provided, comprising:

[0006] A side beam, the side beam comprising a side beam body and an air spring mounting portion, the air spring mounting portion being provided with an air spring mounting hole; an elastic member being arranged in the air spring mounting hole;

[0007] An air spring, the bottom of the air spring being provided with an air spring guide column, the air spring guide column being inserted into the air spring mounting hole and being in contact with the elastic member; when the external load acting on the air spring is a first load, the air spring falls on the top surface of the air spring mounting portion, and the air spring guide column exerts a pressure on the elastic member to compress the elastic member; when the external load acting on the air spring is a second load, the rebound force of the elastic member lifts the air spring upward, so that an adjusting gap is left between the air spring and the air spring mounting portion; the first load is greater than the second load.

[0008] According to a second aspect of the embodiments of the present application, a rail vehicle is provided, comprising the bogie as described above.

[0009] The technical scheme provided by the embodiment of the application is that an air spring mounting hole is arranged on the air spring mounting portion of the side beam, and an elastic member is arranged in the air spring mounting hole; the bottom of the air spring is provided with an air spring guide column, and the air spring guide column is inserted into the air spring mounting hole and in contact with the elastic member. When the external load borne by the air spring is a relatively large first load, the air spring falls on the top surface of the air spring mounting portion, and the air spring guide column exerts pressure on the elastic member to compress the elastic member; when the external load borne by the air spring is a relatively small second load, the rebound force of the elastic member lifts the air spring upward to leave an adjusting gap between the air spring and the air spring mounting portion, so that an adjusting pad can be inserted into the adjusting gap, and then the height of the secondary suspension is adjusted. In the scheme, when the second load borne by the air spring is smaller than the rebound force of the elastic member or the second load is zero, the air spring is automatically lifted by the rebound force of the elastic member, that is, only one step of lifting the component above the air spring is needed to perform the operation of inserting the adjusting pad, and the step of lifting the air spring in the traditional scheme is omitted, so that the workload can be greatly reduced and the work efficiency can be improved, and since the air spring is not lifted by a tool, damage to the air spring is avoided, the service life of the air spring is prolonged, and the reliability is improved. BRIEF DESCRIPTION OF DRAWINGS

[0010] The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiments of the application and serve to explain the principles of the application, and do not limit the application in any way. In the drawings:

[0011] Figure 1 A structural schematic diagram of a bogie provided by the embodiment of the application is shown in the figure;

[0012] Figure 2 A top view schematic diagram of a bogie frame provided by the embodiment of the application is shown in the figure;

[0013] Figure 3 A bottom view schematic diagram of a bogie frame provided by the embodiment of the application is shown in the figure;

[0014] Figure 4 A partial structural schematic diagram of a bogie frame provided by the embodiment of the application is shown in the figure;

[0015] Figure 5 An exploded view of a bogie frame provided by the embodiment of the application is shown in the figure;

[0016] Figure 6 A partial sectional view of a bogie frame provided by the embodiment of the application is shown in the figure;

[0017] Figure 7 A structural schematic diagram of a side beam of a bogie provided by the embodiment of the application is shown in the figure;

[0018] Figure 8A sectional view of the air spring and the side beam provided in the embodiment of the present application;

[0019] Figure 9 A sectional view of the air spring and the side beam provided in the embodiment of the present application; Figure 8 An enlarged view of the B region;

[0020] Figure 10 A structure schematic diagram of the air spring bearing a first load provided in the embodiment of the present application;

[0021] Figure 11 A structure schematic diagram of the air spring bearing a second load provided in the embodiment of the present application;

[0022] Figure 12 A change schematic diagram of the air spring bottom elastic member in the bogie when bearing different loads provided in the embodiment of the present application;

[0023] Figure 13 A partial structure schematic diagram of the side beam of the bogie provided in the embodiment of the present application;

[0024] Figure 14 A sectional view of the air spring and the side beam provided in the embodiment of the present application; Figure 6 An enlarged view of the A region;

[0025] Figure 15 A structure schematic diagram of the cross beam of the bogie provided in the embodiment of the present application;

[0026] Figure 16 A partial structure schematic diagram of the cross beam of the bogie provided in the embodiment of the present application;

[0027] Figure 17 A structure schematic diagram of the primary mounting seat in the bogie assembly provided in the embodiment of the present application;

[0028] Figure 18 A top view structure schematic diagram of the primary suspension device provided in the embodiment of the present application;

[0029] Figure 19 A bottom view structure schematic diagram of the primary suspension device provided in the embodiment of the present application;

[0030] Figure 20 A sectional view of the primary suspension device provided in the embodiment of the present application;

[0031] Figure 21 A sectional view of the air spring and the side beam provided in the embodiment of the present application; Figure 20 An enlarged view of the D region;

[0032] Figure 22 A top view structure schematic diagram of the suspension base in the primary suspension device provided in the embodiment of the present application;

[0033] Figure 23A sectional view of a suspension base in a suspension device according to an embodiment of the present application;

[0034] Figure 24 A structural schematic view of a suspension pin in a suspension device according to an embodiment of the present application;

[0035] Figure 25 Another angle schematic view of a suspension pin in a suspension device according to an embodiment of the present application;

[0036] Figure 26 A structural schematic view of a bogie device according to an embodiment of the present application;

[0037] Figure 27 A top view structural schematic view of a bogie device according to an embodiment of the present application;

[0038] Figure 28 Another top view structural schematic view of a bogie device according to an embodiment of the present application;

[0039] Figure 29 A bottom view structural schematic view of a bogie device according to an embodiment of the present application;

[0040] Figure 30 Another structural schematic view of a bogie device according to an embodiment of the present application;

[0041] Figure 31 Another angle schematic view of a bogie device according to an embodiment of the present application;

[0042] Figure 32 A structural schematic view of a bogie device according to an embodiment of the present application;

[0043] Figure 33 A structural schematic view of a bogie device according to an embodiment of the present application; Figure 27 An enlarged view of E area in FIG. 12;

[0044] Figure 34 A sectional view of a bogie device according to an embodiment of the present application;

[0045] Figure 35 A principle view of an air filter device according to an embodiment of the present application. DETAILED DESCRIPTION

[0046] In order to make the technical solutions and advantages of the embodiments of the present application clearer, the following further describes the exemplary embodiments of the present application with reference to the drawings. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments. It should be noted that the embodiments and features in the embodiments can be combined with each other without conflict.

[0047] Because the air spring of the bogie has a load bearing relationship with the mounting surface of the frame, the mounting surface is a plane that is attached to each other, and no other tool can be inserted to pry up the air spring. Especially in the bogie with the frame side beam as the additional air chamber 177. To solve this problem, the traditional scheme is to set one or two ears with holes on the edge of the air spring guide column base of the air spring, and the position of the frame matched with the ears is also designed with mounting holes. The use of bolts can ensure that the air spring and the frame cannot rotate relative to each other. At the same time, when separating the frame and the air spring, the air spring is rotated so that the ears of the air spring base are misaligned with the mounting holes of the frame. A screw is screwed into the mounting hole of the frame, and the screw is rotated to lift the air spring. At this time, the spacer is inserted to realize the later insertion of the adjustment pad. This work requires multiple people to cooperate, and it is difficult for a single person to complete this work.

[0048] Based on the above technical problems, the embodiment provides a bogie which can be applied to a railway vehicle. The railway vehicle can be a vehicle powered by fuel, a vehicle powered by gas, or a vehicle powered by electricity. The vehicle can be a general-speed train, a motor train unit, a subway, a light rail, etc.

[0049] In the embodiment, the length direction of the vehicle is referred to as the longitudinal direction, the width direction of the vehicle is referred to as the transverse direction, and the height direction of the vehicle is referred to as the vertical direction, the vertical direction, or the vertical direction.

[0050] As shown in Figures 1 to 6 , the bogie comprises a frame, a wheel set 2, a primary suspension device 3, a secondary suspension device 4, and a traction device 5. The frame comprises side beams 11 and a cross beam 12, the two side beams 11 are arranged in parallel, and the cross beam 12 is connected between the two side beams 11.

[0051] The wheel set 2 is arranged at the end of the side beam 11, and the wheel set 2 comprises an axle 21, a wheel 22 arranged on the axle 21, and an axle box 23 located on the inner side of the wheel 22, forming an axle box-in bogie. The axle box and the side beam 11 are provided with the primary suspension device 3 for buffering the acting force between the frame and the wheel set. The frame and the vehicle body are provided with the secondary suspension device 4.

[0052] As shown in Figure 7 , the side beam 11 comprises a side beam body 11a and an air spring mounting portion 11b, and the air spring mounting portion 11b is arranged on the outer side of the middle portion of the side beam body 11a. The air spring mounting portion 11b is provided with an air spring mounting hole 11c for mounting the secondary suspension device 4, and the air spring mounting hole 11c is provided with an elastic member 43.

[0053] As shown in Figures 7 to 9As shown in the figure, the secondary suspension device 4 includes an air spring 41 and an air spring guide column 42 arranged at the bottom of the air spring. The air spring guide column 42 is inserted into the air spring mounting hole 11c and contacts the elastic member 43. The top of the air spring 41 is connected to the vehicle body and bears the load of the vehicle body.

[0054] As shown in the figure, when the external load on the air spring 41 is a relatively large first load, the air spring 41 falls on the top surface of the air spring mounting portion 11b, and the air spring guide column 42 exerts pressure on the elastic member 43 to compress the elastic member 43. Figure 10 As shown in the figure, when the external load on the air spring 41 is a relatively small second load, the second load is smaller than the rebound force of the elastic member 43, and thus the rebound force of the elastic member 43 lifts the air spring 41 upward to leave an adjustment gap 45 between the air spring 41 and the air spring mounting portion 11b, and an adjustment pad can be inserted into the adjustment gap 45 to adjust the height of the air spring. The second load can be zero or smaller than the rebound force of the elastic member.

[0055] Figure 11 As shown in the figure, when the external load on the air spring 41 is a relatively small second load, the second load is smaller than the rebound force of the elastic member 43, and thus the rebound force of the elastic member 43 lifts the air spring 41 upward to leave an adjustment gap 45 between the air spring 41 and the air spring mounting portion 11b, and an adjustment pad can be inserted into the adjustment gap 45 to adjust the height of the air spring. The second load can be zero or smaller than the rebound force of the elastic member.

[0056] During the production or maintenance of the bogie, in the static pressure stage, after the components at the top of the air spring are lifted by the jack, the air spring is automatically lifted upward by the rebound force of the elastic member 43 and separated from the frame, which facilitates the insertion of the adjustment pad into the gap between the air spring and the frame. The components at the top of the air spring can be the vehicle body, and the vehicle body is lifted by the jacking machine; or the components at the top of the air spring can be the bolster, and the bolster is lifted by the jack.

[0057] The technical scheme provided by the embodiment is that an air spring mounting hole is arranged in the air spring mounting portion of the side beam, an elastic member is arranged in the air spring mounting hole, the bottom of the air spring is provided with an air spring guide column, the air spring guide column is inserted into the air spring mounting hole and contacts the elastic member. When the external load on the air spring is a relatively large first load, the air spring falls on the top surface of the air spring mounting portion, and the air spring guide column exerts pressure on the elastic member to compress the elastic member. When the external load on the air spring is a relatively small second load, the rebound force of the elastic member lifts the air spring upward to leave an adjustment gap between the air spring and the air spring mounting portion, which facilitates the insertion of the adjustment pad into the adjustment gap and the adjustment of the height of the secondary suspension. In the scheme, when the second load on the air spring is smaller than the rebound force of the elastic member or the second load is zero, the air spring is automatically lifted upward by the rebound force of the elastic member, that is, only one step of lifting the components above the air spring is needed to perform the operation of inserting the adjustment pad, and the step of lifting the air spring in the traditional scheme is omitted, which can greatly reduce the workload, improve the work efficiency, and avoid damage to the air spring due to the absence of the tool for lifting the air spring, thereby prolonging the service life of the air spring and improving the reliability. ​

[0058] On the basis of the above technical scheme, the embodiment provides an implementation manner that the air spring mounting portion 11b is in a box type structure, and the air spring mounting sleeve 44 is arranged in the air spring mounting portion 11b. A through hole is arranged at the top of the air spring mounting portion 11b, the air spring mounting sleeve 44 is fixed to the inner surface of the top of the air spring mounting portion 11b and is in communication with the through hole, and the internal space of the air spring mounting sleeve 44 is used as an air spring mounting hole.

[0059] The elastic member 43 is arranged in the air spring mounting sleeve 44. Specifically, a stepped surface is arranged on the lower inner wall of the air spring mounting sleeve 44, and the elastic member 43 is arranged on the stepped surface.

[0060] The elastic member 43 can be made of a material having a certain elastic deformation capacity, for example, a steel spring.

[0061] Figure 12 The right view in FIG. 4 is a free state of the elastic member 43, and the height of the elastic member 43 is H3. Figure 12 The left view in FIG. 4 is a state that the air spring is subjected to a first load, and the elastic member 43 is compressed to a whole height of H1. Figure 12 The middle view in FIG. 4 is a state that the vehicle body or the bolster is lifted up, the elastic member 43 is only subjected to the gravity of the air spring, the gravity is smaller than the rebound force of the elastic member 43, and the whole height of the elastic member 43 is H2, so that the air spring is lifted up.

[0062] When the air spring is assembled, the air spring guide column at the bottom of the air spring is inserted into the air spring mounting portion, and the steel spring is compressed. When the vehicle body is loaded on the air spring or the bolster is arranged on the air spring, the steel spring is completely compressed to 2, and the thrust provided by the compressed steel spring is greater than the mass of the air spring. Subsequently, when the height of the air spring needs to be adjusted, the vehicle body is lifted up or the bolster is lifted up by the jack, the air spring is automatically moved up under the rebound action of the steel spring and is separated from the side beam, and the adjustment pad is conveniently added.

[0063] On the basis of the above technical scheme, the embodiment further provides an implementation manner of the side beam main body 11a and the air spring mounting portion 11b, as shown in FIG. 1 and FIG. 2. Figure 7 and Figure 13 As shown in FIG. 1 and FIG. 2, the side beam main body 11a comprises a side beam upper cover plate 111, a side beam lower cover plate 112, a side beam inner vertical plate 113 and a side beam outer vertical plate 114. The side beam lower cover plate 112 is connected between the bottom ends of the side beam inner vertical plate 113 and the side beam outer vertical plate 114, and the side beam upper cover plate 111 is connected between the top ends of the side beam inner vertical plate 113 and the side beam outer vertical plate 114. The side beam upper cover plate 111, the side beam lower cover plate 112, the side beam inner vertical plate 113 and the side beam outer vertical plate 114 are connected to form a side beam main body in a box type structure.

[0064] The air spring mounting portion 11b comprises an air spring mounting upright plate 115. The two ends of the air spring mounting upright plate 115 are bent towards the direction of the side beam outer upright plate 114 relative to the middle part of the air spring mounting upright plate 115 and connected to the side beam outer upright plate 114. The side beam upper cover plate 111 extends outwardly and is connected to the top end of the air spring mounting upright plate 115, and the side beam lower cover plate 112 extends outwardly and is connected to the bottom end of the air spring mounting upright plate 115.

[0065] The side beam upper cover plate 111, the side beam lower cover plate 112, the side beam outer upright plate 114 and the air spring mounting upright plate 115 enclose a first additional chamber 116. The part of the side beam upper cover plate 111 extending into the first additional chamber 116 is provided with a through hole, the air spring mounting sleeve 44 is located in the first additional chamber and fixed to the lower surface of the side beam upper cover plate 111 and in communication with the through hole. The bottom end of the air spring guide column 42 is open to make the first additional chamber 116 communicate with the chamber inside the air spring.

[0066] The first additional chamber 116 is in communication with the internal cavity 411 of the air spring 41 and can serve as an additional chamber of the air spring to improve the buffering capacity of the air spring and thus adapt to a more complex vehicle body.

[0067] Further, the space inside the side beam serves as a second additional chamber 117, and the side beam outer upright plate 114 is provided with an upright plate through hole for making the first additional chamber 116 and the second additional chamber 117 communicate. The second additional chamber 117 also serves as an additional chamber of the air spring to further improve the buffering capacity of the air spring.

[0068] On the basis of the above technical solution, as shown in Figure 7 the part of the inner side of the side beam upper cover plate 111 beyond the side beam inner upright plate 113 serves as a side beam upper connecting end 1111, and the part of the inner side of the side beam lower cover plate 112 beyond the side beam inner upright plate 113 serves as a side beam lower connecting end 1121.

[0069] As shown in Figure 15 and Figure 16 the cross beam 12 comprises a cross beam upper cover plate 121, a cross beam lower cover plate 122 and a cross beam outer upright plate 123, the cross beam upper cover plate 121 is connected to the top end of the cross beam outer upright plate 123, and the cross beam lower cover plate 122 is connected to the bottom end of the cross beam outer upright plate 123. The two ends of the cross beam outer upright plate 123 beyond the cross beam upper cover plate 111 serve as cross beam connecting ends 1231, the cross beam connecting ends 1231 are inserted between the side beam upper connecting end 1111 and the side beam lower connecting end 1121 and connected to the side beam inner upright plate 113. The cross beam upper cover plate 121 is connected to the side beam upper connecting end 1111 in abutment, and the cross beam lower cover plate 122 is connected to the side beam lower connecting end 1121 in abutment.

[0070] For the structure of the side beam and the cross beam being separated, the traditional scheme usually sets a through hole on the side beam, and the cross beam is connected and fixed by penetrating the through hole of the side beam. In order to ensure that the strength of the side beam meets the requirements, the size of the side beam must be large enough to meet the requirements of penetrating the cross beam and the carrying capacity of the vehicle, but this increases the volume and weight of the side beam, and further increases the difficulty of design and manufacture, transportation and assembly of the frame. The above scheme provided by the embodiment does not need to connect the cross beam with the side beam by opening a hole on the side beam, so that the volume and weight of the side beam can be reduced under the condition of meeting the strength of the side beam, which is beneficial to realize the lightweight design of the bogie.

[0071] On the basis of the above technical scheme, the cross beam 12 further comprises a cross beam inner vertical plate 124. The cross beam inner vertical plate 124 forms a cylindrical structure, and a center pin hole 1241 is formed therein. A traction pin in a traction device can be inserted into the center pin hole to transmit traction force or braking force between the cross beam and the traction pin. The cross beam inner vertical plate 124 is located between the two cross beam outer vertical plates 123. The cross beam upper cover plate 121 is connected between the top of the cross beam inner vertical plate 124 and the cross beam outer vertical plate 123. The cross beam lower cover plate 122 is connected between the bottom of the cross beam inner vertical plate 124 and the cross beam outer vertical plate 123.

[0072] The number of the cross beam upper cover plates 121 is two, which are respectively located on both sides of the cross beam inner vertical plate 124 and connected between the cross beam inner vertical plate 124 and the cross beam outer vertical plate 123. The number of the cross beam lower cover plates 122 is two, which are respectively located on both sides of the cross beam inner vertical plate 124 and connected between the cross beam inner vertical plate 124 and the cross beam outer vertical plate 123.

[0073] The two cross beam upper cover plates 121 and the two cross beam lower cover plates 122 are connected between the cross beam inner vertical plate 124 and the cross beam outer vertical plate 123, which can improve the strength of the cross beam. The cross beam inner vertical plate 124 forms a space in which the traction pin can be inserted, so as to transmit the traction force and the braking force between the vehicle body and the frame.

[0074] In a specific scheme, the transverse length of the cross beam upper cover plate 121 is less than that of the cross beam inner vertical plate 124. Correspondingly, the number of the connecting ends 111 on the side beam is two, which are respectively inserted into both sides of the cross beam inner vertical plate 124 and abut against the cross beam upper cover plate 121.

[0075] Further, the cross beam 12 further comprises a cross beam end plate 125, which extends vertically and is connected between the cross beam inner vertical plate 124 and the cross beam outer vertical plate 123. The cross beam end plate 125, together with the cross beam upper cover plate 121, the cross beam lower cover plate 122, the cross beam outer vertical plate 123 and the cross beam inner vertical plate 124, forms a hollow box structure. The cross beam end plate 125 is provided with a through hole for weight reduction and also as a vent hole to keep the inside of the box structure dry.

[0076] Further, the cross beam 12 further comprises cross beam rib plates 126, which are connected between the cross beam inner vertical plate 124 and the cross beam outer vertical plate 123, and a plurality of cross beam rib plates 126 are arranged at intervals. The cross beam rib plates 126 can improve the strength of the cross beam 12. The cross beam rib plates 126 are also provided with through holes for weight reduction and as air vents to keep the inside of the box structure dry. The top of the cross beam rib plate 126 is recessed downward to leave a gap with the cross beam upper cover plate 121, which can weaken the local rigidity and leave a deformation allowance.

[0077] On the basis of the above technical solutions, the cross beam vertical plate connecting assembly 127 is used to connect the cross beam inner vertical plate 124 and the cross beam outer vertical plate 123. The cross beam vertical plate connecting assembly 127 comprises a cross beam vertical plate connecting plate arranged in the center pin hole and a bolt connected with a nut after passing through the bolt hole on the cross beam vertical plate connecting plate and the bolt hole of the cross beam outer vertical plate 123. The cross beam vertical plate connecting assembly 127 can also act as a structure to stop the traction pin to slow down the rigid impact between the traction pin and the cross beam.

[0078] Further, the cross beam 12 further comprises a transverse traction stop 128 located in the center pin hole 1241 and fixed to the two ends of the cross beam inner vertical plate 124 in the transverse direction. The transverse traction stop 128 is used to limit the transverse relative displacement between the traction pin and the cross beam.

[0079] Further, a vertical plate through hole 1141 is formed in the side beam outer vertical plate 114 to communicate the first additional chamber 116 and the second additional chamber 117. Specifically, the number of vertical plate through holes 1141 is two, which are arranged in sequence along the length direction of the side beam outer vertical plate 114.

[0080] Further, as shown in Figure 14 the bottom end of the side beam outer vertical plate 114 is also provided with a vertical plate notch 1142, which can communicate the first additional chamber 116 and the second additional chamber 117 on the one hand, and realize drainage on the other hand, so that the water in the air spring mounting part 11b enters the side beam body 11a from the vertical plate notch 1142, and then is discharged from the drainage hole at the bottom of the side beam body 11a.

[0081] A primary mounting seat 13 is arranged at the end of the side beam 11 to provide an interface for connecting with the primary suspension device 3. The primary mounting seat 13 is assembled with the side beam 11 as an independent component. For different wheelbase bogies, the same side beam can be used, and only the position of the interface in the primary positioning seat needs to be adjusted. Compared with designing and adjusting the entire side beam, adjusting and manufacturing the primary positioning seat is simpler and more efficient, and the side beam can be reused and applied to bogies with various wheelbase, thereby reducing production cost.

[0082] As shown in Figure 3 and Figure 17As shown, one end of the primary mounting seat 13 is provided with an upper clamping arm 131 and a lower clamping arm 132, and a space for accommodating the end of the side beam 11 is formed between the upper clamping arm 131 and the lower clamping arm 132. The upper clamping arm 131 and the lower clamping arm 132 respectively cover the upper surface and the lower surface of the end of the side beam 11 and are fixedly connected to the end of the side beam 11, for example, by a welding process.

[0083] The bottom surface of the middle part of the primary mounting seat 13 is provided with an interface for connecting with a primary suspension device, and the primary suspension device is arranged below the primary mounting seat 13. The load of the wheel set is transmitted to the primary mounting seat 13 through the primary suspension device, and the primary mounting seat 13 bears this part of the load. The position of the interface for connecting with the primary suspension device can be set and processed according to the wheelbase of the bogie. The side beam matched with different primary positioning seats can meet the requirements of bogies with different wheelbases.

[0084] Both ends of the side beam 11 are provided with the primary mounting seat 13, and four primary mounting seats 13 are needed for one frame.

[0085] The embodiment provides a specific implementation: the distance between the upper clamping arm 131 and the middle part of the primary mounting seat is greater than the distance between the lower clamping arm 132 and the middle part of the primary mounting seat. That is, the upper clamping arm 131 is much higher than the middle part of the primary mounting seat, and the lower clamping arm 132 is only slightly lower than the middle part of the primary mounting seat.

[0086] The upper clamping arm 131 and the lower clamping arm 132 are smoothly connected to the middle part of the primary mounting seat. The upper clamping arm 131 and the lower clamping arm 132 are integrally formed with the middle part of the primary mounting seat, for example, by casting.

[0087] One implementation is that the bottom surface of the middle part of the primary mounting seat 13 is provided with two primary positioning holes 133 arranged in sequence along the length direction of the side beam, as the interface for connecting with the primary suspension device of the bogie. The positioning pin at the top of the primary suspension device is inserted into the primary positioning hole 133 to limit the position of the primary suspension device.

[0088] The shape of the primary positioning hole 133 can be circular, oval or other shapes, which can be set according to the positioning pin at the top of the primary suspension device. In the embodiment, the primary positioning hole 133 is a circular hole.

[0089] Further, the primary mounting seat 13 is also provided with an interface for connecting with a primary vertical damper. The bottom end of the primary vertical damper is connected to the axle box on the wheel set, and the top end is connected to the primary mounting seat 13, which is used to buffer the vertical vibration between the wheel set and the side beam.

[0090] Specifically, a shock absorber connecting hole 134 is arranged at the end of the primary mounting seat 13 away from the side beam, as an interface connected with the primary vertical shock absorber. The shock absorber connecting hole 134 penetrates the upper and lower surfaces of the primary mounting seat 13. The primary vertical shock absorber is fixed to the primary mounting seat 13 by a bolt after penetrating the shock absorber connecting hole 134.

[0091] Further, the primary mounting seat 13 can also be provided with an interface for connecting with a bogie cabin. The bogie cabin is arranged at the bottom and side of the bogie, covering the bogie to protect the bogie, and forming a flow guide port at the front end and rear end of the bogie respectively, so that air enters the bogie from the flow guide port and forms an orderly flow, and then flows out from another flow guide port, improving the heat dissipation effect of the bogie.

[0092] For the scheme that the bogie cabin is connected to the primary mounting seat 13, a bogie cabin connecting hole 135 is arranged at the end of the primary mounting seat 13 away from the side beam, as an interface for connecting with the bogie cabin. The bogie cabin connecting hole 135 has four holes, which are arranged around the shock absorber connecting hole 134 and connected with the bogie cabin by a bolt.

[0093] In the above scheme, the side beam upper cover plate 111, the side beam lower cover plate 112 and the side beam outer vertical plate can be formed by a whole plate, and the side beam inner vertical plate is connected by multiple plates. Specifically, as shown in Figure 7 The side beam inner vertical plate includes a middle inner vertical plate 1131, an end inner vertical plate 1132 and a gear box hanger assembly 1133.

[0094] The middle inner vertical plate 1131 is located in the middle of the side beam and is vertically arranged, with the top connected to the side beam upper cover plate 111 and the bottom connected to the side beam lower cover plate 112.

[0095] The end inner vertical plate 1132 is located at the end of the side beam and is vertically arranged, with the top connected to the side beam upper cover plate 111 and the bottom connected to the side beam lower cover plate 112.

[0096] The gear box hanger assembly 1133 is used to connect the gear box and includes a gear box hanger vertical plate 11331 and a gear box hanger 11332. The gear box hanger vertical plate 11331 is located between the middle inner vertical plate 1131 and the end inner vertical plate 1132 and is connected to the middle inner vertical plate 1131 and the end inner vertical plate 1132. The gear box hanger 11332 is located on the surface of the gear box hanger vertical plate 11331 away from the side beam outer vertical plate.

[0097] The gear box hanger stand upright plate 11331 and the gear box hanger 11332 can be an integral structure, and the gear box hanger stand upright plate 11331 is welded between the middle inner upright plate 1131 and the end inner upright plate 1132 in the manufacturing process of the side beam, so that the gear box hanger 11332 is directly assembled together in the manufacturing process of the side beam, and the gear box hanger 11332 becomes a part of the side beam.

[0098] The assembly is completed in the manufacturing process of the side beam, which solves the problems of low assembly efficiency, high work intensity, low connection position strength and fatigue damage of the traditional gear box hanger fixed to the frame by bolts, improves the assembly efficiency of the bogie, reduces the workload of the operator, reduces the number of parts, and reduces the maintenance difficulty.

[0099] In addition, the above technical solution takes the gear box hanger as a part of the side beam, which is more compact than the traditional structure and is more suitable for built-in axle box bogies, and the mass of the gear box hanger is smaller, which is easier to assemble and helps to reduce the weight of the bogie.

[0100] The gear box hanger 11332 and the gear box hanger stand upright plate 11331 are formed integrally, for example, by casting, additive manufacturing or the like. Compared with the traditional scheme in which the gear box hanger 11332 and the frame are connected together by bolts, the gear box hanger 11332 and the gear box hanger stand upright plate 11331 are integrally formed, which can overcome the problems of low connection strength and fatigue damage of bolt connection.

[0101] The gear box hanger stand upright plate 11331 is connected to the middle inner upright plate 1131 and the end inner upright plate 1132 by welding, which has high strength and can improve the strength of the side beam and the entire frame. The surface of the gear box hanger stand upright plate 11331 is flush with the middle inner upright plate 1131 and the end inner upright plate 1132, which makes the side beam 11 better in integrity and visual effect, and the protruding structure on the inner side of the side beam can reduce the stress concentration, further improving the strength of the side beam.

[0102] One specific solution: the gear box hanger 11332 comprises: a first gear box hanger arm 11332a and a second gear box hanger arm 11332b, the first gear box hanger arm 11332a and the second gear box hanger arm 11332b are arranged in sequence along the length direction of the side beam 11, and the first gear box hanger arm 11332a and the second gear box hanger arm 11332b both extend in the transverse direction. A space for connecting with the gear box connecting piece is left between the first gear box hanger arm 11332a and the second gear box hanger arm 11332b, the gear box connecting piece is inserted into the space and connected with the first gear box hanger arm 11332a and the second gear box hanger arm 11332b respectively through bolts.

[0103] On the basis of the above technical solution, the side beam inner stand further comprises: a motor hanger assembly 1134 for connecting the driving motor. The motor hanger assembly 1134 comprises: a motor hanger stand plate 11341 and a motor hanger 11342.

[0104] The motor hanger stand plate 11341 is located at the end of the middle inner stand 1131 away from the gear box hanger assembly 1133, and the motor hanger stand plate 11341 is butt-jointed with the middle inner stand 1131. The motor hanger 11342 is located on the surface of the motor hanger stand plate 11341 away from the side beam outer stand. One end of the motor hanger stand plate 11341 is butt-jointed with the middle inner stand 1131, and the other end extends to the end of the side beam 11.

[0105] The motor hanger stand plate 11341 and the motor hanger 11342 can be an integral structure, and in the manufacturing process of the side beam, the motor hanger stand plate 11341 is welded on one side of the middle inner stand 1131, so that the motor hanger 11342 is also assembled together directly in the manufacturing process of the side beam, and the motor hanger 11342 also becomes a part of the side beam and is assembled in the manufacturing process of the side beam, further improving the assembly efficiency of the bogie.

[0106] Specifically, the motor hanger stand plate 11341 and the motor hanger 11342 are integrally formed, for example, by casting, additive manufacturing or the like. Compared with the traditional solution in which the motor hanger 11342 is connected with the frame by bolts, the integrally formed motor hanger stand plate 11341 and motor hanger 11342 can overcome the problems of lower connection strength and easy fatigue damage of bolt connection.

[0107] The gear box hanger stand plate 11341 is butt-jointed with the middle inner stand 1131, and can be connected by welding, which is conducive to improving the strength of the side beam and even the entire frame. The surface of the gear box hanger stand plate 11341 is flush with the surface of the middle inner stand 1131, further improving the integrity of the side beam 11, and the inner side of the side beam has no protruding structure to reduce the stress concentration, further improving the strength of the side beam.

[0108] One specific embodiment is as follows: the motor mounting bracket 11342 includes a motor boom extending laterally, and the motor boom having an interface for connecting to a motor connector. The motor connector is connected to the motor boom by bolts.

[0109] like Figures 18 to 25 As shown, the suspension device provided in this embodiment includes a suspension base 31 and a suspension pin 32. The suspension base 31 is located at the bottom, and its bottom end is used to connect to the axle box in the wheelset. The suspension pin 32 is located at the top, and its top end is used to connect to the frame.

[0110] by Figure 22 Taking the perspective of [the device] as an example, the suspension base 31 is provided with a suspension cavity 311 with an open top, and the side wall of the suspension cavity 311 is provided with a first magnetic element 312. The first magnetic element 312 can be a permanent magnet or an electromagnet.

[0111] The suspension pin 32 can enter and exit the suspension cavity 311 through the opening. The suspension pin 32 is magnetic, and its magnetic poles are the same as those of the first magnetic element 312. If the first magnetic element 312 is the N pole, then the suspension pin 32 is also the N pole; if the first magnetic element 312 is the S pole, then the suspension pin 32 is also the S pole. A repulsive force is generated between the suspension pin 32 and the first magnetic element 312.

[0112] The suspension pin 32 itself can be made of a permanent magnet or an electromagnet. Alternatively, the suspension pin 32 itself is not magnetic, but a second magnetic element is provided inside or on the surface of the suspension pin 32, and the magnetic poles of the second magnetic element are the same as those of the first magnetic element.

[0113] When the load on the frame is large, downward pressure is applied to the suspension pin 32, causing it to move downwards against the magnetic repulsion force, with a larger portion entering the suspension cavity 311. When the load on the frame is small, the magnetic repulsion force pushes the suspension pin 32 upwards. The magnetic repulsion force effectively buffers the load. Similarly, when the rail vehicle travels on uneven surfaces, the vibration of the wheel and rail is transmitted to the primary suspension system through the wheelset. The magnetic repulsion force ensures that the vertical movement of the suspension pin 32 is less than the vertical movement of the suspension base 31, achieving a buffering effect on wheel and rail vibration, reducing car vibration, and improving ride comfort. Furthermore, there is no contact between the suspension pin 32 and the suspension base 31, preventing abnormal noise. The probability of mechanical contact between them is also low, thus reducing wear and extending service life.

[0114] This primary suspension system is used on the bogie of a rail vehicle. The suspension pin is used to connect to the frame, and the suspension base is used to connect to the wheelset axle box. This primary suspension system can buffer the vibration between the frame and the wheelset. Furthermore, the suspension pin and the suspension base do not directly contact each other, so there will be no vibration or abnormal noise. It also reduces mechanical wear and extends the service life of each component.

[0115] The first magnetic member 312 is arranged along the circumference of the suspension base 31. The first magnetic member 312 can be a closed ring or an open ring. Alternatively, the first magnetic member 312 can be multiple, and arranged uniformly along the circumference of the suspension base 31. In the embodiment, four first magnetic members 312 are arranged uniformly along the circumference of the suspension base 31, so as to keep the magnetic field between the suspension pins uniform, and reduce the relative movement in the horizontal direction when the suspension pin 32 moves relative to the suspension base 31 in the vertical direction.

[0116] When the suspension pin 32 is subjected to a large vehicle load or a large instantaneous vibration amplitude of the wheel rail, the suspension pin 32 can be in contact with the suspension base 31. The side stop block 33 is arranged on the circumferential surface of the suspension pin 32, and the side stop block 33 is arranged one-to-one with the first magnetic member 312. The side stop block 33 is in contact with the first magnetic member 312, which can avoid the direct contact between the suspension pin 32 and the first magnetic member 312, thereby reducing the impact and wear of the suspension pin 32 and the first magnetic member 312, and further prolonging the service life.

[0117] In the embodiment, four side stop blocks 33 are arranged uniformly on the outer circumferential surface of the suspension pin 32. The position of the side stop block 33 is aligned with the first magnetic member 312.

[0118] Further, the bottom stop block 34 is arranged between the bottom end of the suspension pin 32 and the suspension base 31, specifically between the bottom end of the suspension pin 32 and the bottom wall of the suspension cavity 311, which can avoid the direct contact between the bottom end of the suspension pin 32 and the suspension base 31.

[0119] The side stop block 33 can be made of materials such as felt, silica gel, and rubber, and has a certain buffering capacity.

[0120] As for the shape of the suspension base 31 and the suspension pin 32, the embodiment provides an implementation: along the direction from the opening to the inside, the cross-sectional area of the suspension cavity 311 gradually decreases, and the cross-sectional area at the opening is the largest. Correspondingly, along the direction into the suspension cavity 311, the cross-sectional area of the suspension pin 32 gradually decreases, and the suspension pin 32 has a shape of large at the top and small at the bottom, which is convenient for entering and leaving the suspension cavity 311.

[0121] One scheme is that the cross-sectional area of the suspension pin 32 is circular, and further, the suspension pin 32 is in the shape of a circular truncated cone. The side wall of the suspension cavity 311 is a conical surface.

[0122] An annular platform 322 is arranged at the end of the suspension pin 32 towards the inside of the suspension cavity 311, that is, the bottom edge of the suspension pin 32, and the bottom stopper 34 is sleeved on the bottom of the suspension pin 32 and abuts against the annular platform 322. In this way, the diameter of the bottom stopper 34 can be reduced, and the relative movement between the suspension pin 32 and the suspension base 31 is not interfered.

[0123] On the basis of the above technical solution, the bottom wall of the suspension cavity 311 is provided with a plurality of limiting protrusions 313 extending towards the opening. The limiting protrusions 313 can be in a cylindrical shape. Correspondingly, the end of the suspension pin 32 towards the inside of the suspension cavity 311 (the bottom end of the suspension pin 32) is provided with a plurality of limiting holes 321 for accommodating the plurality of limiting protrusions 313.

[0124] The plurality of limiting protrusions 313 are inserted into the plurality of limiting holes 321, and during the relative vertical movement of the suspension base 31 and the suspension pin 32, the plurality of limiting protrusions 313 cannot be pulled out of the plurality of limiting holes 321, and the relative vertical movement of the suspension base 31 and the suspension pin 32 is limited.

[0125] For the matching mode of the suspension base 31 and the wheel set, a plurality of first-axle-box positioning pins 314 can be arranged at the bottom end of the suspension base 31 and inserted into the positioning holes at the top of the axle box to achieve vertical positioning and horizontal limiting, so that the relative horizontal movement between the first-axle-suspension device and the axle box is avoided.

[0126] For the matching mode of the suspension pin 32 and the frame, a plurality of first-frame positioning pins 323 can be arranged at the top end of the suspension pin 32 and inserted into the positioning holes of the frame to achieve vertical positioning and horizontal limiting, so that the relative horizontal movement between the first-axle-suspension device and the frame is avoided.

[0127] On the basis of the above technical solution, the bogie further comprises a bogie cabin, specifically comprising a bottom cabin device, which is installed at the bottom of the bogie and can protect the bogie from being hit by stones and solid objects on the track surface, and can also avoid the attachment of dirt such as mud on the bogie.

[0128] As shown in Figures 26 to 34 The bogie bottom cabin device provided by the embodiment comprises a bottom cabin framework 61 and a bottom cabin skin 62 connected to the bottom cabin framework 61. The bottom cabin framework 61 is connected to the frame of the bogie, and the bottom cabin skin 62 is connected to the bottom of the bottom cabin framework 61.

[0129] The bottom cabin framework comprises a bottom cabin longitudinal beam 611, a bottom cabin short cross beam 612 and a bottom cabin long cross beam 613. Two bottom cabin longitudinal beams 611 are arranged in parallel and at intervals. The bottom cabin long cross beam 613 is connected to the middle part of the two bottom cabin longitudinal beams 611, and the end part of the bottom cabin long cross beam 613 exceeds the bottom cabin longitudinal beam 611. The bottom cabin short cross beam 612 is located outside the bottom cabin long cross beam 613 and is connected between the two bottom cabin longitudinal beams 611.

[0130] The bottom compartment skin includes a skin body 621 and skin sides 622. The skin body 621 extends longitudinally and covers the bottom compartment longitudinal beams 611 and the bottom compartment short cross beams 612. The skin sides 622 are located on both sides of the longitudinal middle part of the skin body 621 and cover the end parts of the bottom compartment long cross beams 613.

[0131] The size of the bottom compartment skin is larger than the covered area of the bottom compartment framework. The bottom compartment framework serves the function of support and connection, and the bottom compartment skin serves the function of blocking and protection.

[0132] The above-mentioned bottom compartment framework serves the function of support and connection, and the bottom compartment skin serves the function of blocking and protection, which is used to prevent the stones and solid objects on the rail from colliding with the parts of the bogie, thereby protecting the bogie, prolonging the service life of the parts, and improving the driving safety. In addition, the skin sides are further provided on both sides of the longitudinal middle part of the skin body, and the skin sides protrude from the skin body to be closer to the skirt plates on both sides of the rail vehicle body, thereby reducing the gap between the skirt plates and the bottom compartment skin, reducing the chaotic flow of air in this part of the area, and thereby reducing the noise.

[0133] On the basis of the above technical solution, the embodiment provides a specific implementation of the bottom compartment device:

[0134] The number of the bottom compartment long cross beams 613 is two, which are arranged side by side and spaced apart. The two ends of the bottom compartment long cross beams 613 respectively pass through the middle part of the corresponding bottom compartment longitudinal beams 611 and pass out to the outside of the bottom compartment longitudinal beams 611. Specifically, the lengths of the two ends of the bottom compartment long cross beams 613 corresponding to the passing out of the bottom compartment longitudinal beams 611 are equal.

[0135] The bottom compartment long cross beams 613 can adopt a channel beam or a mouth-shaped beam, and the bottom compartment longitudinal beams 611 can adopt a channel beam. The opening directions of the two bottom compartment longitudinal beams 611 are arranged in opposite directions, the bottom compartment long cross beams 613 pass through the groove bottoms of the bottom compartment longitudinal beams 611, and are riveted and fixed with the groove side walls of the bottom compartment longitudinal beams 611.

[0136] The number of the bottom compartment short cross beams 612 is two, which are respectively located on the outside of the two bottom compartment long cross beams 613. The bottom compartment short cross beams 612 can adopt a channel beam or a mouth-shaped beam, and the two ends of the bottom compartment short cross beams 612 are respectively inserted into the grooves of the bottom compartment longitudinal beams 611 and are riveted and fixed with the groove side walls of the bottom compartment longitudinal beams 611 by rivets.

[0137] Further, the bottom compartment end beams 614 are further adopted and connected to the end parts of the two bottom compartment longitudinal beams 611. The bottom compartment end beams 614 can adopt a channel beam or a mouth-shaped beam, and the two ends of the bottom compartment end beams 614 are respectively inserted into the grooves of the bottom compartment longitudinal beams 611 and are riveted and fixed with the groove side walls of the bottom compartment longitudinal beams 611 by rivets. The bottom compartment end beams 614 are used to support the end parts of the bottom compartment skin 62.

[0138] The bottom cabin long cross beam 613, the bottom cabin short cross beam 612 and the bottom cabin end beam 614 are arranged at intervals, and the bottom cabin short cross beam 612 is located between the bottom cabin end beam 614 and the bottom cabin long cross beam 613.

[0139] The skin main body 621 is arranged at the bottom of the bottom cabin longitudinal beam 611, the bottom cabin long cross beam 613, the bottom cabin short cross beam 612 and the bottom cabin end beam 614, the length of the skin main body 621 is greater than the length of the bottom cabin longitudinal beam 611, and the width of the skin main body 621 is greater than the distance between the two bottom cabin longitudinal beams 611.

[0140] The bottom cabin skin 62 is made of aluminum material, which has a small mass and is beneficial to reduce the weight of the vehicle body and realize lightweight design of the vehicle. Moreover, the aluminum skin is relatively solid and has high reliability.

[0141] On the basis of the above technical scheme, the embodiment provides a bogie cabin, which comprises the bottom cabin device 601 and a side cabin device 602 and a flow guide device 603, and the bogie is covered.

[0142] The side cabin device 602 is located at the two sides of the bogie and is connected to the bottom of the vehicle body of the railway vehicle, and is used for protecting the bogie from the side. The side cabin device 602 can be consistent with the shape of the skirt plate of the vehicle body, so that the skirt plate of the vehicle body is not needed to be arranged on the side of the bogie, and the side cabin device 602 can be directly used as the skirt plate of the vehicle body.

[0143] The flow guide device 603 is arranged at the two ends of the bogie and is connected to the bottom of the vehicle body of the railway vehicle. The flow guide device 603 and the end of the bottom cabin device 601 form a flow guide channel, so that air enters the inside of the bogie from the flow guide channel at one end of the bogie and flows out from the other end of the bogie, and an orderly flow is formed in the inside of the bogie, which is beneficial to accelerate heat dissipation of the bogie.

[0144] The flow guide device 603 is recessed inward in an arc-shaped notch towards the side of the bottom cabin device 601. Correspondingly, the middle part of the bottom cabin end beam 614 is arched outward, and the longitudinal end edge of the skin main body 621 is arc-shaped and consistent with the shape of the arc-shaped notch of the flow guide device 603, so that the caliber of the flow guide channel is uniform and the flow is more gentle, which can effectively reduce the turbulence formed at the flow guide position and reduce the wind noise at the position.

[0145] Further, the bottom cabin inclined beam 615 is connected between the end of the bottom cabin long cross beam 613 and the bottom cabin longitudinal beam 611, and forms a triangular structure with the bottom cabin long cross beam 613 and the bottom cabin longitudinal beam 611, which is beneficial to improve the strength of the two sides of the middle part of the bottom cabin framework 61. The bottom cabin inclined beam 615 can be a mouth-shaped beam or a groove-shaped beam, and is riveted with the bottom cabin longitudinal beam 611 and the bottom cabin long cross beam 613 through rivets.

[0146] The edge of the skin side portion 622 is outwardly convex arc shape. The bottom compartment skin 62 further comprises: an arc-shaped skin side stop portion 623 vertically connected to the edge of the skin side portion 622. The outwardly convex arc shape of the edge of the skin side portion 622 can reduce the gap between the vehicle body side skirt or the side compartment device 602, thereby reducing wind resistance.

[0147] The bottom compartment longitudinal beam 611, the bottom compartment end cross beam 612, the bottom compartment long cross beam 613, the bottom compartment end beam 614 and the bottom compartment inclined beam 615 can all be made of extruded aluminum profiles, and weight reduction holes can be processed to achieve weight reduction. The bottom compartment skin 62 is connected to the bottom compartment framework 61 by a press riveting process, which is simple and reliable, and can further achieve lightweight.

[0148] For the connection between the bottom compartment device 601 and the bogie, an embodiment is provided: a boom assembly 63 is used to connect the bottom compartment device 601 to the bogie. Specifically, the bottom end of the boom assembly 63 is connected to the end of the bottom compartment long cross beam 613, and the top end is connected to the frame of the bogie.

[0149] Specifically, the boom assembly 63 includes a boom body 631, the bottom end of which is fixed to the bottom compartment long cross beam 613, and a first sealing gasket 632 is provided between the bottom compartment long cross beam 613. The top end of the boom body 631 is connected to the frame, specifically upward through the side beam 11 in the frame and fixed with a boom connecting nut 633. The boom connecting nut 633 is a metal embedded self-locking nut, which can prevent loosening. A second sealing gasket 634 is provided between the top end of the boom body 631 and the frame, and the circumferential direction of the second sealing gasket 634 is provided with a ring groove, and the bottom plate of the side beam is embedded in the ring groove. The above-mentioned boom assembly 63 can significantly increase the hanging stiffness of the bottom compartment device 601, and the sealing gasket can slow down the relative movement and vibration between the bottom compartment device and the frame.

[0150] Further, a steel wire rope damper 64 is provided between the bottom compartment device 601 and the bogie to slow down the vibration therebetween. Specifically, the two ends of the bottom compartment end beam 614 are outwardly connected to the bottom compartment longitudinal beam 611, and the steel wire rope damper 64 is arranged at the end of the bottom compartment end beam, and the top thereof is connected to the axle box of the bogie. Specifically, four steel wire rope dampers 64 are arranged at the ends of the two bottom compartment end beams 614, and are connected between the four axle boxes and the bottom compartment end beam 614 to slow down the vibration impact on the axle boxes and the relative movement between the axle boxes and the bottom compartment device.

[0151] Specifically, the bottom plate of the steel wire rope damper 64 is connected to the bottom compartment end beam 614 by bolts. The top plate of the steel wire rope damper 64 is connected to the axle box 23 and the vertical damper 71 in sequence by bolts.

[0152] On the basis of the above technical solutions, the area surrounded by the bottom tank long cross beam 613 and the bottom tank short cross beam 612 forms an inspection area, and the skin main body is provided with an inspection hole corresponding to the inspection area. The inspection door 651 is located in the inspection area, and one side of the inspection door 651 is hinged to the bottom tank longitudinal beam 611 through a hinge 652, so that the inspection door 651 rotates relative to the bottom tank longitudinal beam 611 through the hinge 652 and opens downward or closes upward. The opposite side of the inspection door 651 is connected to the other bottom tank longitudinal beam 611 through a locking member 653, which is used to lock the inspection door when it is closed. The locking member 653 can be a tongue lock structure.

[0153] Further, a anti-falling safety lock is arranged in the middle of the bottom tank short cross beam 612, which is used to further lock the inspection door when it is closed, to prevent the inspection door from falling accidentally.

[0154] Further, brake disc avoiding holes 625 are arranged at the four corners of the skin main body 621, which are used to avoid the brake disc on the bogie axle. Specifically, the brake disc avoiding holes 625 are arranged on one side of the area between the bottom tank end cross beam 612 and the bottom tank end beam 614, corresponding to the position of the brake disc.

[0155] Further, brake pad replacement windows 624 are arranged at the four corners of the skin main body 621, through which the brake pads on the brake caliper can be disassembled and assembled, to realize the maintenance and replacement of the brake pads.

[0156] The above-mentioned bottom tank device 601 is provided with two inspection doors 651, and the bogie can be inspected and maintained from the bottom by opening the inspection doors.

[0157] On the basis of the above technical solutions, the air water filter device is arranged on the frame, which can be arranged on the cross beam 12 or the side beam 11. As shown in Figure 35 The air water filter device includes a main water filter path 141, a first water filter branch path 142, a second water filter branch path 143, and a transmission mechanism. One end of the main water filter path 141 is in communication with an additional air chamber 177, and the other end is connected to the first water filter branch path 142 and the second water filter branch path 143, respectively. The first water filter branch path 142 is provided with a driving fan 144 connected to a driving end of the transmission mechanism. The second water filter branch path 143 is provided with a compression fan 145 connected to a driven end of the transmission mechanism. The second water filter branch path 143 is connected to the additional air chamber 177 through an air filter 146.

[0158] The high-pressure gas in the additional air chamber 177 enters the first water filter branch path 142 and the second water filter branch path 143 (as Figure 35The single arrow in the figure indicates the direction of the rotation of the driving fan wheel 144. Under the power of the high-pressure gas entering the first water filtering branch 142, the driving fan wheel 144 is driven to rotate, which drives the driving end of the transmission mechanism to move and drives the driven end to move, thereby driving the compression fan wheel 145 to rotate, so that the high-pressure gas entering the second water filtering branch 143 is further compressed to increase the pressure of the gas (as indicated by the double arrow in the figure). Figure 35 The part of the compressed gas after being pressurized passes through the air water filter 146, and the air water filter 146 separates the moisture in the part of the compressed gas and dries the part of the compressed gas, and the dried compressed gas returns to the additional air chamber 177.

[0159] The air water filtering device can dry the gas in the additional air chamber 177 to remove the moisture in the additional air chamber 177, reduce the probability of corrosion of the box-type structure, thereby prolonging the service life of the frame, improving the reliability of the frame and the secondary suspension device, and ensuring the safety of driving.

[0160] On the basis of the above technical solution, the transmission mechanism can adopt a chain wheel, a gear, or the like. In the embodiment, the transmission mechanism includes: a driving gear 1471 and a driven gear 1472 that mesh with each other, the driving gear 1471 is connected with the driving fan wheel 144 to rotate synchronously, and the driven gear 1472 is connected with the compression fan wheel 145 to rotate synchronously. The number of teeth of the driving gear 1471 is greater than the number of teeth of the driven gear 1472, the rotation speed of the driven gear 1472 is greater than the rotation speed of the driving gear 1471, and the driven gear 1472 rotates faster, thereby driving the compression fan wheel 145 to rotate quickly to further compress and pressurize the air.

[0161] Further, the control assembly 148 is arranged in the first water filtering branch 142 and is used to control the start of the first water filtering branch 142. The control assembly 148 specifically can include: a controller, a relay, an electromagnetic valve, or the like. The controller periodically controls the electromagnetic valve to open through the relay, so that the compressed air in the additional air chamber 177 passes through the water filtering main path 141 to enter the two water filtering branches and is dried according to the above scheme. For example, the electromagnetic valve is opened to dry at a time period when the temperature is relatively low every day.

[0162] Further, the humidity sensor 149 is arranged in the additional air chamber 177. The humidity sensor 149 is electrically connected with the control assembly 148. The humidity sensor 149 detects the humidity in the additional air chamber 177, and when the humidity is greater than a preset value, the control assembly 148 controls the electromagnetic valve to open to dry, so as to dry the additional air chamber 177 according to the actual humidity.

[0163] Further, the one-way gas valve 1410 is arranged in the second water filtering branch 143, specifically between the air water filter 146 and the additional air chamber 177, so that the compressed gas after being dried by the air water filter 146 can only flow to the additional air chamber 177.

[0164] The embodiment also provides a railway vehicle, comprising the bogie provided by any one of the above contents. The railway vehicle provided by the embodiment has the same technical effects as the bogie.

Claims

1. A bogie, characterized in that, The utility model provides a kind of air spring installation structure of bogie, including: Side beam;The side beam includes side beam main body and air spring installation part, air spring installation part is equipped with air spring installation hole;The elastic element is equipped in the air spring installation hole; Air spring;The bottom of the air spring is equipped with air spring guide column, air spring guide column is inserted into the air spring installation hole, and is in contact with the elastic element;When the external load received by air spring is first load, air spring falls on the top surface of air spring installation part, and air spring guide column exerts pressure on elastic element to make elastic element compress;When the external load received by air spring is second load, the rebound force of elastic element lifts air spring upward, so that adjustment gap is left between air spring and air spring installation part;First load is greater than second load; Wherein, the side beam as additional air chamber of bogie; It further includes crossbeam and air filter device, the air filter device is arranged on the crossbeam or side beam;And the air filter device includes: filter main road, first filter branch, second filter branch and transmission mechanism;One end of filter main road is communicated with additional air chamber, and the other end is connected with first filter branch and second filter branch respectively;First filter branch is provided with driving wind wheel, and driving wind wheel is connected with driving end in transmission mechanism;Second filter branch is provided with compression wind wheel, and compression wind wheel is connected with driven end in transmission mechanism;Second filter branch is connected to additional air chamber through air filter; The transmission mechanism includes: driving gear and driven gear that are engaged with each other, the driving gear is connected with the driving wind wheel and rotates synchronously, the driven gear is connected with the compression wind wheel and rotates synchronously;The number of teeth of the driving gear is greater than the number of teeth of the driven gear.

2. The bogie according to claim 1, characterized in that The air spring installation part is a box type structure, and an air spring installation sleeve is arranged in the air spring installation part;A through hole is formed in the top of the air spring installation part, the air spring installation sleeve is fixed to the inner surface of the top of the air spring installation part and is in communication with the through hole, and the internal space of the air spring installation sleeve serves as the air spring installation hole.

3. The bogie of claim 2, wherein The lower inner wall of the air spring installation sleeve is provided with a stepped surface, and the elastic element is arranged on the stepped surface.

4. The bogie of claim 1, wherein The elastic element is a steel spring.

5. The bogie according to any one of claims 2-4, characterized in that, The side beam main body includes: a side beam lower cover plate, a side beam upper cover plate, a side beam inner vertical plate and a side beam outer vertical plate, the side beam lower cover plate is connected between the bottom ends of the side beam inner vertical plate and the side beam outer vertical plate, and the side beam upper cover plate is connected between the top ends of the side beam inner vertical plate and the side beam outer vertical plate.

6. The bogie of claim 5, wherein The air spring installation part includes: an air spring installation vertical plate;Both ends of the air spring installation vertical plate are bent towards the side beam outer vertical plate relative to the middle part of the air spring installation vertical plate and are connected to the side beam outer vertical plate; The side beam upper cover plate extends outward and is connected to the top end of the air spring installation vertical plate, and the side beam lower cover plate extends outward and is connected to the bottom end of the air spring installation vertical plate.

7. The bogie of claim 6, wherein The side beam upper cover plate, the side beam lower cover plate, the side beam outer vertical plate and the air spring installation vertical plate enclose a first additional chamber;The part of the side beam upper cover plate extending into the first additional chamber is provided with a through hole;The air spring installation sleeve is located in the first additional chamber and is connected to the lower surface of the side beam upper cover plate.

8. The bogie of claim 7, wherein The internal space of the side beam serves as a second additional chamber;The side beam outer vertical plate is provided with a vertical plate through hole for communicating the first additional chamber and the second additional chamber; The bottom end of the air spring guide column is open to communicate the first additional chamber with the chamber inside the air spring.

9. The bogie of claim 8, wherein, The side beam outer vertical plate is provided with two vertical plate through holes arranged in sequence along the length direction of the side beam.

10. A rail vehicle, characterized by Comprising: The bogie according to any one of claims 1-9.

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