A test bogie

Abstract

The application provides a test bogie, belonging to the technical field of bogies, comprising a frame body, two axle box supports, a driving device and a wheel set axle box; the frame body is an arched structure with the middle part arched upward, and the arched structure encloses an installation space for placing the driving device and the wheel set axle box; the middle part of the frame body is provided with a fixing seat and a rotating structure, the fixing seat is used for being connected with the driving device, and the rotating structure is used for being connected with a vehicle body; the two axle box supports are connected at the two ends of the frame body along a second direction and are located below the frame body; and the two axle box supports are used for fixing the wheel set axle box. The driving device and the wheel set axle box can be integrated in the installation space, the wheel set axle box is fixed by the two axle box supports, so that the overall structure of the bogie is compact and occupies a small space; in addition, the frame can rotate relative to the vehicle body, when the bogie passes through a test route with a small curvature radius, the vehicle body does not need to be turned at a large angle, so that derailment of the vehicle body is avoided.

Description

Technical Field

[0001] This invention belongs to the field of bogie technology, and more specifically, relates to a test bogie. Background Technology

[0002] With the development of rail technology, rail equipment products and technologies are constantly being updated. Various component design and manufacturing companies are continuously developing various railway accessories. The development of these accessories inevitably requires line testing, especially for high-speed train-related line components, which incurs even higher costs, resulting in high development costs. Therefore, the need for scaled-down rail vehicle line testing has come to the attention of various companies to achieve low-cost line testing.

[0003] Existing technologies often use a fixed-scale scaling of conventional bogies. For example, a bogie with a wheelbase of 2.5m is scaled down by 1:4 as required. Due to the complex structure and numerous components of conventional bogies, it is difficult to scale them down proportionally, making manufacturing very difficult. At the same time, the bogie is fixedly connected to the car body, making it difficult for the car body to pass through test tracks with small curvature radii, which can easily lead to derailment. In addition, it is difficult to arrange conventional drive devices in the scaled-down conventional bogie. Summary of the Invention

[0004] The purpose of this invention is to provide a test bogie, which aims to solve the technical problems of existing test bogies, such as high manufacturing difficulty, easy derailment, and difficulty in arranging drive devices.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is: to provide a test bogie, defining the longitudinal direction of the bogie as a first direction and the lateral direction of the bogie as a second direction, wherein the test bogie comprises:

[0006] The main frame structure is an arched structure with an upward arch in the middle; the middle part of the main frame structure is provided with a fixed seat and a rotating structure; the rotating structure is used to connect with the vehicle body.

[0007] Two axle box supports are respectively connected to both ends of the main frame along the second direction and are located below the main frame;

[0008] A wheelset axle box, fixedly connected between two axle box supports; and

[0009] A drive unit is mounted on the wheelset axle box and located below the arched structure; the drive unit is provided with a rubber hanging node, which is elastically connected to the fixed seat.

[0010] In one possible implementation, the driving device includes:

[0011] Drive motor;

[0012] A gearbox assembly is connected to the power output end of the drive motor; the gearbox assembly is fixedly mounted on the wheelset axle box; and

[0013] A drive suspension support is fixedly connected between the drive motor and the gearbox assembly; the rubber suspension node is disposed on the drive suspension support.

[0014] In some embodiments, the drive suspension support is an L-shaped plate structure, including a first plate and a second plate arranged perpendicular to the first plate;

[0015] The surface of the first plate is perpendicular to the first direction, and the first plate is fixed between the drive motor and the gearbox assembly;

[0016] The rubber suspension node is installed on the second plate; the second plate is also equipped with a safety lifting device.

[0017] In some embodiments, the rubber suspension node includes:

[0018] A sleeve is located below the fixed base; the top surface of the sleeve abuts against the bottom surface of the fixed base.

[0019] Two layers of second rubber bodies are spaced apart on the outside of the sleeve in a vertical direction; the space between the two layers of second rubber bodies is used to fix the drive suspension support; wherein, each layer of second rubber body has a metal layer at its upper and lower ends, and the thickness of the second rubber body is - times the thickness of the metal layer; and

[0020] Fasteners pass through the sleeve, the drive suspension support, and the fixed base in a vertical direction, and are used to connect the sleeve, the drive suspension support, and the fixed base.

[0021] In some embodiments, the wheelset axle box includes:

[0022] Axle; the axle passes through the gearbox assembly, and the gearbox assembly is fixedly connected to the axle;

[0023] Two sets of wheels, each connected to the axle; and

[0024] Two sets of axle boxes are respectively connected to the axle, and the two sets of axle boxes are located on the outer side of the two sets of wheels respectively; the top surface of the axle box is provided with a rubber spring mounting interface; the front and rear sides of the axle box are respectively provided with limiting blocks for connecting with the axle box bracket.

[0025] In one possible implementation, the main structure includes:

[0026] An arched frame; the top surface of the middle section of the arched frame is connected to the rotating structure, and the side surface of the middle section of the arched frame is connected to the fixed base; and

[0027] Two connecting frames are respectively connected to both ends of the arched frame along the second direction; the upper end face of the connecting frame is provided with a two-stage rubber spring fixing plate; in the first direction, the front side of the connecting frame extends forward beyond the front side of the arched frame, and the rear side of the connecting frame extends backward beyond the rear side of the arched frame.

[0028] The two connecting frames correspond one-to-one with the two axle box supports, and the axle box supports are connected below the corresponding connecting frames.

[0029] In some embodiments, the axle box bracket includes:

[0030] A substrate is connected to the bottom surface of the connecting frame; the four peripheral edges of the substrate are aligned with the four peripheral edges of the lower end surface of the connecting frame; a rubber spring fixing plate is provided in the middle of the lower end surface of the substrate; and

[0031] Two limiting brackets are fixed on the base plate and located below the base plate; the two limiting brackets are located on both sides of the primary rubber spring fixing plate along the second direction.

[0032] Each of the limiting frames includes a mounting plate facing the other limiting frame, the surface of the mounting plate being perpendicular to the first direction; the mounting plate is provided with a strip-shaped clamping groove, the strip-shaped clamping groove penetrating downward through the mounting plate.

[0033] In some embodiments, the limiting frame further includes:

[0034] A backplate is provided at intervals from the mounting plate along the first direction;

[0035] Two upright plates are respectively connected to both sides of the mounting plate and the back plate; wherein the mounting plate, the back plate, and the two upright plates form a cavity structure; and

[0036] A pad is disposed within the cavity structure and corresponds directly to the strip-shaped mounting groove along the first direction.

[0037] In one possible implementation, the test bogie further includes a series of rubber springs disposed between the axle box bracket and the wheelset axle box, the series of rubber springs comprising:

[0038] The lower stop is provided on the wheelset axle box, and the upper end face is provided with a limiting groove with the groove facing upward;

[0039] An upper stop is disposed on the axle box bracket, located above the lower stop; the upper stop has a guide post extending into the limiting groove, and there is a gap between the guide post and the bottom of the limiting groove; and

[0040] The first rubber body is formed between the lower stop and the upper stop, and is located on the periphery of the guide post.

[0041] In one possible implementation, the test bogie further includes:

[0042] A bolster beam is located above the main frame body and the two axle box supports; a mounting hole is provided in the middle of the bolster beam, and the rotary structure is located within the mounting hole; and

[0043] The second-stage rubber spring assembly is fixedly installed between the bolster beam and the two axle box supports.

[0044] The beneficial effects of the test bogie provided by this invention are as follows: Compared with the prior art, the test bogie of this invention has an arched main structure, and the upward arched lower mounting space can accommodate the drive unit and wheelset axle boxes. That is to say, the drive unit and wheelset axle boxes can be integrated in the mounting space, and the wheelset axle boxes are fixed by two axle box brackets, making the overall structure of the bogie compact and occupying little space. The middle part of the main structure is connected to the slewing structure, which is connected to the car body, so that the test bogie frame can rotate relative to the car body. When the test bogie frame passes through a test route with a small radius of curvature, the car body does not need to rotate at a large angle, thereby ensuring that the car body will not derail. Attached Figure Description

[0045] To more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0046] Figure 1 A schematic diagram of the structure of the test bogie provided in an embodiment of the present invention. Figure 1 ;

[0047] Figure 2 A schematic diagram of the structure of the test bogie provided in an embodiment of the present invention. Figure 2 ;

[0048] Figure 3 A schematic diagram of the drive device for a test bogie provided in an embodiment of the present invention;

[0049] Figure 4This is a structural schematic diagram of the rubber suspension node of the test bogie provided in an embodiment of the present invention;

[0050] Figure 5 This is a schematic diagram of the wheelset axle box of a test bogie provided in an embodiment of the present invention;

[0051] Figure 6 A schematic diagram of the main structure of the test bogie provided in an embodiment of the present invention;

[0052] Figure 7 This is a schematic diagram of the axle box support of the test bogie provided in an embodiment of the present invention;

[0053] Figure 8 A schematic diagram of the connection structure between the main frame of the test bogie and the axle box support provided in an embodiment of the present invention;

[0054] Figure 9 A schematic diagram of the primary rubber springs of a test bogie provided in an embodiment of the present invention;

[0055] Figure 10 A cross-sectional view of the primary rubber springs of a test bogie provided in an embodiment of the present invention;

[0056] Figure 11 A schematic diagram of the bolster beam of the test bogie provided in an embodiment of the present invention.

[0057] In the picture:

[0058] 1. Main frame; 11. Arched frame; 111. Fixed base; 112. Rotating structure; 12. Connecting frame; 121. Secondary rubber spring fixing plate;

[0059] 2. Axle box bracket; 21. Base plate; 211. Primary rubber spring fixing plate; 22. Limiting bracket; 221. Mounting plate; 222. Back plate; 223. Vertical plate; 224. Pad plate; 225. Strip-shaped clamping groove; 226. Connecting lug;

[0060] 3. Drive unit; 31. Drive motor; 32. Gearbox assembly; 33. Drive suspension support; 331. First plate; 332. Second plate; 34. Safety lifting device;

[0061] 4. Wheelset axle box; 41. Axle; 42. Wheel; 43. Axle box; 431. Primary rubber spring mounting interface; 432. Limit block; 44. Limit circlip;

[0062] 5. First rubber spring; 51. Lower stop; 511. Limiting groove; 52. Upper stop; 521. Guide post; 53. First rubber body;

[0063] 6. Rubber hanging node; 61. Sleeve; 62. Second rubber body; 63. Fastener; 631. Bolt; 632. Nut; 64. Metal layer;

[0064] 7. Pillow beam; 71. Limiting hole;

[0065] 8. Secondary rubber spring assembly. Detailed Implementation

[0066] To make the technical problems to be solved, the technical solutions, and the beneficial effects of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the present invention.

[0067] Please see Figure 1 and Figure 2 The experimental bogie provided by the present invention will now be described. The longitudinal direction of the bogie is defined as the first direction, and the lateral direction of the bogie as the second direction. The experimental bogie includes a frame body 1, two axle box supports 2, wheelset axle boxes 4, and a drive unit 3. The frame body 1 is an arched structure with an upward arch in the middle. A fixed seat 111 and a slewing structure 112 are provided in the middle of the frame body 1. The slewing structure 112 is used to connect with the vehicle body. The two axle box supports 2 are respectively connected to both ends of the frame body 1 along the second direction and are located below the frame body 1. The wheelset axle boxes 4 are fixedly connected between the two axle box supports 2. The drive unit 3 is mounted on the wheelset axle boxes 4 and is located below the arched structure. The drive unit 3 is provided with rubber hanging nodes 6, which are elastically connected to the fixed seat 111.

[0068] It should be noted that the bogie used in the above test is a single wheelset bogie, so the wheelset axle box 4 can be fixed between the two axle box supports 2.

[0069] The main frame 1 and the two axle box supports 2 can be an integral structure or separate structures. The main frame 1 and the two axle box supports 2 constitute the frame of the test bogie.

[0070] Because a slewing structure 112 is installed in the middle of the main frame 1 and inserted into the car body, the main frame 1 can rotate relative to the car body. When passing through a test track with a small radius of curvature, only the bogie needs to rotate at a large angle, while the car body can rotate at a small angle under the action of inertia, thereby avoiding derailment.

[0071] Since the bogie is used for testing, it does not require a high travel speed. The use of a slewing structure 112 to connect the bogie frame and the car body ensures the stability of the car body during travel.

[0072] The slewing structure 112 can be a center plate shaft structure, which includes a turntable and a turntable guide post mounted on the turntable, with the guide post inserted upwards into the car body. The turntable can rotate relative to the main frame 1. The slewing structure 112 can also be a thrust bearing structure, which can reduce the rotational resistance between the bogie and the car body, allowing the bogie to rotate more freely.

[0073] The drive unit 3 is used to move the wheelset axle box 4 on the track. Since the drive unit 3 is integrated on the wheelset axle box 4, the power source of the drive unit 3 is preferably electric.

[0074] Compared with the prior art, the test bogie frame provided by this invention has an arched main body 1. The upward arched lower mounting space can accommodate the bogie's drive unit 3 and wheelset axle box 4. In other words, the drive unit 3 and wheelset axle box 4 can be integrated into the mounting space. The drive unit 3 is mounted on the wheelset axle box 4, which is fixed by two axle box brackets 2, making the overall structure of the bogie compact and space-saving. The middle part of the main body 1 is connected to the slewing structure 112, which is connected to the vehicle body, allowing the test bogie frame to rotate relative to the vehicle body. When the test bogie frame passes through a test route with a small radius of curvature, the vehicle body does not need to rotate at a large angle, thus ensuring that the vehicle body will not derail.

[0075] In some embodiments, the drive device 3 described above may employ, for example... Figure 3 The structure shown is described in the following document. Figure 3 The drive unit 3 includes a drive motor 31, a gearbox assembly 32, and a drive suspension support 33. The gearbox assembly 32 is connected to the power output end of the drive motor 31; the gearbox assembly 32 is fixedly mounted on the wheelset axle box 4; the drive suspension support 33 is fixedly connected between the drive motor 31 and the gearbox assembly 32; and the rubber suspension node 6 is mounted on the drive suspension support 33.

[0076] Since this bogie is used for testing, it does not require high travel speeds. Furthermore, the drive unit 3 is integrated into the wheelset axle box 4, occupying minimal space. Therefore, the power source for the drive unit 3 is a drive motor 31, and the intermediate transmission component of the drive unit 3 is a gearbox assembly 32. Specifically, the gearbox assembly 32 is a bushing-type gearbox, including a housing and a gear transmission assembly located within the housing. The gear transmission assembly enables precise transmission and stable transmission performance; moreover, it can be integrated into the housing, occupying minimal space.

[0077] The drive suspension support 33 is used to connect the gearbox assembly 32 and the frame body 1.

[0078] The drive motor 31 outputs power to drive the gear transmission component in the gearbox assembly 32 to rotate, which in turn drives the axle 41 of the wheelset axle box 4 to rotate, so that the wheelset axle box 4 can move on the track.

[0079] Preferably, the drive suspension support 33 is an L-shaped plate structure, including a first plate 331 and a second plate 332 arranged perpendicular to the first plate 331; the surface of the first plate 331 is perpendicular to the first direction, and the first plate 331 is fixed between the drive motor 31 and the gearbox assembly 32; the rubber suspension node 6 is arranged on the second plate 332; the second plate 332 is also provided with a safety lifting 34.

[0080] The first plate 331 is fitted onto the power output shaft of the drive motor 31 and is fixedly connected to the gearbox assembly 32; the second plate 332 is used to set the rubber hanging node 6 and the safety lifting 34. The L-shaped plate structure of the drive hanging support 33 has a simple structure and does not take up extra space.

[0081] In some embodiments, the aforementioned rubber hanging node 6 can be adopted as follows: Figure 4 The structure shown is described in the following document. Figure 4 The rubber suspension node 6 includes a sleeve 61, two layers of second rubber bodies 62, and fasteners 63. The sleeve 61 is located below the fixed base 111; the top surface of the sleeve 61 abuts against the bottom surface of the fixed base 111; the two layers of second rubber bodies 62 are spaced apart on the outside of the sleeve 61 in the vertical direction; the second plate 332 of the drive suspension support 33 is fixed between the two layers of second rubber bodies 62; wherein, each layer of second rubber body 62 has a metal layer 64 at its upper and lower ends, and the thickness of the second rubber body 62 is 5-8 times the thickness of the metal layer 64; the fasteners 63 pass through the sleeve 61, the second plate 332, and the fixed base 111 in the vertical direction, and are used to connect the sleeve 61, the drive suspension support 33, and the fixed base 111.

[0082] The two layers of second rubber bodies 62 serve as buffers and dampers. These two layers of second rubber bodies 62 are positioned between the drive suspension support 33 and are not connected to the fixed base 111. The drive suspension support 33 is elastically connected to the two layers of second rubber bodies 62, while the fixed base 111 is rigidly connected to the sleeve 61 and fasteners 63. Therefore, the motion decoupling between the drive device 3 and the frame can be achieved through the aforementioned rubber suspension nodes 6.

[0083] Preferably, in order to achieve quick connection, the fastener 63 includes a bolt 631 and a nut 632. The bolt 631 passes through the sleeve 61, the drive hanger 33 and the fixed seat 111 from bottom to top, and the nut 632 is tightened above the fixed seat 111.

[0084] Preferably, to avoid the second rubber body 62 directly contacting the drive suspension support 33 and the sleeve 61, based on the above embodiment, each layer of the second rubber body 62 is provided with a metal layer 64 at its upper and lower ends. The metal layer 64 is used to abut against the sleeve 61 and the drive suspension support 33 to avoid the second rubber body 62 being worn and affecting its performance.

[0085] Preferably, the thickness of the second rubber body 62 is 5-8 times the thickness of the metal layer 64, that is, the thickness of the second rubber body 62 is much greater than the thickness of the metal layer 64.

[0086] In some embodiments, the aforementioned wheelset axle box 4 may be adopted from, for example Figure 5 The structure shown is described in the following document. Figure 5 The wheelset axle box 4 includes an axle 41, two sets of wheels 42, and two sets of axle boxes 43. The axle 41 passes through the gearbox assembly 32; the two sets of wheels 42 are respectively connected to the axle 41; the two sets of axle boxes 43 are respectively connected to the axle 41, and the two sets of axle boxes 43 are located on the outer sides of the two sets of wheels 42 respectively; the top surface of the axle box 43 is provided with a rubber spring mounting interface 431; the front and rear sides of the axle box 43 are respectively provided with limiting blocks 432 for connecting with the axle box bracket 2.

[0087] Specifically, the input shaft of the gearbox assembly 32 is a hollow shaft, through which an axle 41 passes. The hollow shaft has a keyway, or the axle 41 itself has a keyway. The axle 41 and the hollow shaft are connected by a flat key. Additionally, the axle 41 has a retaining ring 44 that abuts against the outer surface of the axle box 43. The axle 41 and the gearbox assembly 32 transmit torque via the keyway and flat key, while the retaining ring 44 limits the position of the gearbox assembly 32 on the axle 41.

[0088] Specifically, the wheel 42 includes a wheel hub and a wheel rim. The wheel hub and wheel rim are positioned by a locating pin and connected together by bolts. The wheel hub and wheel rim are separated, and the diameter of the center hole of the rim is larger than the diameter of the outer ring of the bearing. The user can replace the rim without removing the wheel and bearing, that is, replace the tread as needed.

[0089] In addition, an electric braking device is provided on the outside of the wheelset axle box 4 to provide braking force to the bogie. A speed measuring device can also be installed between the axle 41 and the axle box 43.

[0090] In some embodiments, the aforementioned structural body 1 may adopt the following... Figure 6 and Figure 8 The structure shown is described in the following document. Figure 6 and Figure 8The main frame 1 includes an arched frame 11 and two connecting frames 12. The top surface of the middle part of the arched frame 11 is connected to the aforementioned rotary structure 112, and the side surface of the middle part of the arched frame 11 is connected to the aforementioned fixed seat 111. The two connecting frames 12 are respectively connected to the two ends of the arched frame 11 along the second direction. The upper end surface of the connecting frame 12 is provided with a secondary rubber spring fixing plate 121. The two connecting frames 12 correspond one-to-one with the two axle box supports 2, and the axle box supports 2 are connected below the corresponding connecting frame 12.

[0091] It should be noted that the main frame 1 is a frame structure welded from multiple plates, such as... Figure 6 As shown, the multiple plates include an upper cover plate, a lower cover plate, intermediate connecting plates, and internal stiffening plates. The upper cover plate covers both the top surface of the arched frame 11 and the top surfaces of the two connecting frames 12. The lower cover plate can be considered as two sets, one set covering only the bottom surface of the arched frame 11, and the other set covering the bottom surfaces of the two connecting frames 12. Multiple intermediate connecting plates connect the upper and lower cover plates, making the main frame 1 a frame structure. The internal stiffening plates are located inside the frame structure and are used to enhance the strength of the main frame 1.

[0092] In this embodiment, the main frame 1 is divided into an arched frame 11 and two connecting frames 12, which is based on the shape and function of the main frame 1.

[0093] The top surface of the middle section of the arched frame 11 is a plane, which is perpendicular to the vertical direction of the vehicle body. The rotating structure 112 is located on the aforementioned plane. The mounting base 111 is provided on the side of the middle section of the arched frame 11. The arched frame 11 is mainly used to form an installation space to integrate the drive unit 3 and the wheel set axle box 4. The connecting frame 12 is mainly used to connect the axle box bracket 2.

[0094] Preferably, based on the above embodiments, in the first direction, the front side of the connecting frame 12 extends forward beyond the front side of the arched frame 11, and the rear side of the connecting frame 12 extends backward beyond the rear side of the arched frame 11. That is, the front and rear sides of the connecting frame 12 extend beyond the arched frame 11 respectively. This makes the top view structure of the frame body 1 resemble an I-beam. On the one hand, the connecting frame 12 can increase the fixing area with the axle box bracket 2, thereby increasing the overall volume of the axle box bracket 2 and making the fixing wheel pair axle box 4 of the axle box bracket 2 more stable. On the other hand, the front view structure of the frame body 1 is arched. The combination of the top view I-beam structure and the front view arched structure ensures the rigidity and stability of the frame body 1.

[0095] In some embodiments, the aforementioned axle box bracket 2 can be adopted as follows: Figure 7 The structure shown is described in the following document. Figure 7The axle box bracket 2 includes a base plate 21 and two limiting brackets 22. The base plate 21 is connected to the bottom surface of the connecting bracket 12; the four peripheral edges of the base plate 21 are aligned with the four peripheral edges of the lower end face of the connecting bracket 12; a rubber spring fixing plate 211 is provided in the middle part of the lower end face of the base plate 21; the two limiting brackets 22 are respectively fixed on the base plate 21 and located below the base plate 21; the two limiting brackets 22 are respectively located on both sides of the rubber spring fixing plate 211 along the second direction; wherein, each limiting bracket 22 includes a mounting plate 221 facing the other limiting bracket 22, the plate surface of the mounting plate 221 is perpendicular to the first direction; the mounting plate 221 is provided with a strip-shaped clamping groove 225, the strip-shaped clamping groove 225 penetrates downward through the mounting plate 221.

[0096] Two limiting brackets 22 are arranged facing each other and spaced apart, and the wheelset axle box 4 is fixed between the two limiting brackets 22. Specifically, a limiting block 432 is provided on the side wall of the axle box 43, and the limiting block 432 is inserted into the strip-shaped mounting groove 225 from bottom to top, so that the wheelset axle box 4 is limited in the first direction and the second direction.

[0097] The axle box 43 is positioned between the two limit brackets 22, which saves space and uses a snap-fit ​​connection, making the assembly simple and reliable.

[0098] The base plate 21 serves two purposes: firstly, it is fixedly connected to the connecting frame 12, and secondly, it is used to assemble the two limiting frames 22. Specifically, the lower cover plate of the connecting frame 12 has the same size and structure as the base plate 21, and the base plate 21 is fixedly connected to the lower cover plate of the connecting frame 12 by multiple bolt assemblies. Preferably, to increase the strength of the connecting frame 12, multiple reinforcing ribs are also provided at intervals between the upper cover plate and the lower cover plate of the connecting frame 12.

[0099] Since the strip-shaped locking groove 225 of the mounting plate 221 engages with the limiting block 432, it can be fixed in both the first and second directions. To further enhance the fixing relationship between the axle box 43 and the axle box bracket 2 and to achieve limiting in the vertical direction of the bogie, based on the above embodiment, connecting ears 226 protruding outward in the second direction are respectively formed on both sides of the mounting plate 221. The connecting ears 226 are used to connect with the axle box 43. Specifically, the connecting ears 226 are provided with mounting holes, and the axle box 43 is provided with connecting parts corresponding to the connecting ears 226. The connecting parts abut against the connecting ears 226 and are fixed with bolt fasteners.

[0100] In some embodiments, the aforementioned limiting frame 22 may also employ, for example... Figure 7 The structure shown is described in the following document. Figure 7In addition to the mounting plate 221, the limiting frame 22 also includes a back plate 222, two upright plates 223, and a pad 224. The back plate 222 is spaced apart from the mounting plate 221 along a first direction; the two upright plates 223 are respectively connected to the two sides of the mounting plate 221 and the back plate 222; wherein, the mounting plate 221, the back plate 222, and the two upright plates 223 form a cavity structure; the pad 224 is disposed in the cavity structure and corresponds directly to the strip-shaped clamping groove 225 along the first direction.

[0101] The limiting frame 22 is a frame structure welded together from the mounting plate 221, the back plate 222, and two upright plates 223, making the structure of the limiting frame 22 simple and easy to manufacture. Since the mounting plate 221 has a strip-shaped clamping groove 225, in order to prevent rainwater, dust and other impurities from entering the interior of the limiting frame 22 (i.e., the cavity structure) through the strip-shaped clamping groove 225, a pad 224 is welded inside the limiting frame 22. The pad 224 is located directly behind the strip-shaped clamping groove 225 to cover the strip-shaped clamping groove 225, thereby preventing impurities from entering the interior of the limiting frame 22 and causing corrosion.

[0102] In some embodiments, the aforementioned test bogie may also employ, for example... Figure 9 and Figure 10 The structure shown is described in the following document. Figure 9 and Figure 10 The test bogie also includes a series of rubber springs 5 ​​disposed between the axle box bracket 2 and the wheelset axle box 4. The series of rubber springs 5 ​​includes a lower stop 51, an upper stop 52, and a first rubber body 53. The upper end face of the lower stop 51 is provided with a limiting groove 511 with the groove opening facing upward; the upper stop 52 is located above the lower stop 51; the upper stop 52 has a guide post 521 extending into the limiting groove 511, and there is a gap between the guide post 521 and the bottom of the limiting groove 511; the first rubber body 53 is formed between the lower stop 51 and the upper stop 52, and is located around the guide post 521.

[0103] Specifically, the upper stop 52 is connected to the primary rubber spring fixing plate 211, and the lower stop 51 is connected to the primary rubber spring mounting interface 431 on the wheelset axle box 43.

[0104] A limiting groove 511 is provided on the lower stop portion 51, and a guide post 521 is provided on the upper stop portion 52. The lower end of the guide post 521 extends into the limiting groove 511, and there is a gap between the lower end of the guide post 521 and the bottom of the limiting groove 511. That is to say, the upper stop portion 52 and the lower stop portion 51 can move relative to each other in the vertical direction. When the test bogie frame and the wheelset axle box 4 experience excessive relative displacement, the upper stop portion 52 and the lower stop portion 51 can move relative to each other in the vertical direction, which can compress the first rubber body 53, allowing the first rubber body 53 to fully exert its elastic effect, thereby avoiding hard contact between the upper stop portion 52 and the lower stop portion 51, and making the first rubber body 53 rigidly connected to the upper stop portion 52 and the lower stop portion 51.

[0105] In some embodiments, the aforementioned test bogie may also employ, for example... Figure 11 The structure shown is described in the following document. Figure 11 The test bogie also includes a bolster beam 7 and a secondary rubber spring assembly 8. The bolster beam 7 is located above the main frame 1 and the two axle box supports 2; a limiting hole 71 is provided in the middle part of the bolster beam 7, and the slewing structure 112 is located in the limiting hole 71; the secondary rubber spring assembly 8 is fixedly installed between the bolster beam 7 and the two axle box supports 2.

[0106] The top surface of the bolster beam 7 has a body mounting surface with body mounting holes. The front side of the bolster beam 7 also has a drive unit anti-slip lug. The bottom surface of the bolster beam 7 also has four secondary tire rubber spring mounting interfaces.

[0107] The secondary rubber spring assembly 8 includes four secondary rubber springs. The top ends of the secondary rubber springs are fixedly installed at the secondary rubber spring interface and on the secondary rubber spring fixing plate 121.

[0108] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A test bogie, defining the forward-backward direction of the bogie as a first direction and the left-right direction of the bogie as a second direction, characterized in that, The test bogie includes: The main frame (1) is an arched structure with the middle part arching upwards; the middle part of the main frame (1) is provided with a fixed seat (111) and a rotating structure (112); the rotating structure (112) is used to connect with the vehicle body; the main frame (1) includes an arched frame (11) and two connecting frames (12); the top surface of the middle part of the arched frame (11) is connected to the rotating structure (112), and the side of the middle part of the arched frame (11) is connected to the fixed seat (111); the two connecting frames (12) are respectively connected to the two ends of the arched frame (11) along the second direction; the upper end surface of the connecting frame (12) is provided with a two-stage rubber spring fixing plate (121); in the first direction, the front side of the connecting frame (12) extends forward beyond the front side of the arched frame (11), and the rear side of the connecting frame (12) extends backward beyond the rear side of the arched frame (11); Two axle box supports (2) are respectively connected to both ends of the frame body (1) along the second direction and are located below the frame body (1); two connecting frames (12) correspond one-to-one with the two axle box supports (2), and the axle box supports (2) are connected below the corresponding connecting frames (12); The wheelset axle box (4) is fixedly connected between the two axle box supports (2); The drive unit (3) is mounted on the wheelset axle box (4) and located below the arched structure; the drive unit (3) is provided with a rubber hanging node (6), which is elastically connected to the fixed seat (111); A bolster beam (7) is located above the main frame (1) and the two axle box supports (2); a limiting hole (71) is provided in the middle part of the bolster beam (7), and the rotary structure (112) is located in the limiting hole (71); and The second-stage rubber spring assembly (8) is fixedly installed between the pillow beam (7) and the two axle box supports (2).

2. The test bogie as described in claim 1, characterized in that, The driving device (3) includes: Drive motor (31); The gearbox assembly (32) is connected to the power output end of the drive motor (31); the gearbox assembly (32) is fixedly mounted on the wheelset axle box; and The drive suspension support (33) is fixedly connected between the drive motor (31) and the gearbox assembly (32); the rubber suspension node (6) is disposed on the drive suspension support (33).

3. The test bogie as described in claim 2, characterized in that, The drive suspension support (33) is an L-shaped plate structure, including a first plate (331) and a second plate (332) that is perpendicular to the first plate (331). The surface of the first plate (331) is perpendicular to the first direction, and the first plate (331) is fixed between the drive motor (31) and the gearbox assembly (32); The rubber hanging node (6) is set on the second plate (332); the second plate (332) is also equipped with a safety lifting device (34).

4. The test bogie as described in claim 2, characterized in that, The rubber hanging node (6) includes: A sleeve (61) is located below the fixed base (111); the top surface of the sleeve (61) abuts against the bottom surface of the fixed base (111); Two layers of second rubber bodies (62) are spaced apart on the outside of the sleeve (61) in a vertical direction; the two layers of second rubber bodies (62) are used to fix the drive suspension support (33); wherein, each layer of second rubber body (62) has a metal layer (64) at its upper and lower ends, and the thickness of the second rubber body (62) is 5-8 times the thickness of the metal layer (64); and Fastener (63) passes through the sleeve (61), the drive suspension support (33) and the fixed seat (111) in the vertical direction, and is used to connect the sleeve (61), the drive suspension support (33) and the fixed seat (111).

5. The test bogie as described in claim 2, characterized in that, The wheelset axle box (4) includes: Axle (41); the axle (41) passes through the gearbox assembly (32), and the gearbox assembly (32) is fixedly connected to the axle (41); Two sets of wheels (42) are respectively connected to the axle (41); and Two sets of axle boxes (43) are respectively connected to the axle (41), and the two sets of axle boxes (43) are located on the outer side of the two sets of wheels (42); the top surface of the axle box (43) is provided with a rubber spring mounting interface (431); the front and rear sides of the axle box (43) are respectively provided with limiting blocks (432) for connecting with the axle box bracket (2).

6. The test bogie as described in claim 1, characterized in that, The axle box bracket (2) includes: A substrate (21) is connected to the bottom surface of the connecting frame (12); the four peripheral edges of the substrate (21) are aligned with the four peripheral edges of the lower end face of the connecting frame (12); a rubber spring fixing plate (211) is provided in the middle part of the lower end face of the substrate (21); and Two limiting brackets (22) are fixed on the base plate (21) respectively and located below the base plate (21); the two limiting brackets (22) are located on both sides of the first rubber spring fixing plate (211) along the second direction; Each of the limiting frames (22) includes a mounting plate (221) facing the other limiting frame (22), the surface of the mounting plate (221) being perpendicular to the first direction; the mounting plate (221) is provided with a strip-shaped clamping groove (225), the strip-shaped clamping groove (225) penetrating downward through the mounting plate (221).

7. The test bogie as described in claim 6, characterized in that, The limiting frame (22) also includes: A back plate (222) is provided at a distance from the mounting plate (221) along the first direction; Two upright plates (223) are respectively connected to both sides of the mounting plate (221) and the back plate (222); wherein the mounting plate (221), the back plate (222), and the two upright plates (223) form a cavity structure; and A pad (224) is disposed within the cavity structure and corresponds directly to the strip-shaped mounting groove (225) along the first direction.

8. The test bogie as described in claim 1, characterized in that, The test bogie also includes a series of rubber springs (5) disposed between the axle box bracket (2) and the wheelset axle box (4), the series of rubber springs (5) comprising: The lower stop (51) is provided on the wheel set axle box (4), and the upper end face is provided with a limiting groove (511) with the groove opening facing upward. An upper stop (52) is disposed on the axle box bracket (2) and located above the lower stop (51); the upper stop (52) has a guide post (521) extending into the limiting groove (511), and there is a gap between the guide post (521) and the bottom of the limiting groove (511); and The first rubber body (53) is formed between the lower stop (51) and the upper stop (52) and is located on the periphery of the guide post (521).

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