CN112277967A

CN112277967A - Central suspension device

Info

Publication number: CN112277967A
Application number: CN202011126901.7A
Authority: CN
Inventors: 刘爱文; 柯晓乐; 冯晔; 宋少波; 黄恒; 孙博; 苏利杰; 王全虎; 尹刚; 姚雄; 罗辉; 黄美林; 崔灿; 侯建云; 梅琨; 陈治国; 刘伟; 彭全海
Original assignee: CRRC Yangtze Co Ltd
Current assignee: CRRC Yangtze Co Ltd
Priority date: 2020-10-20
Filing date: 2020-10-20
Publication date: 2021-01-29

Abstract

The invention belongs to the technical field of rail transit, and particularly relates to a central suspension device. The device includes core pin and bolster, the upper end of core pin hangs on the framework of bogie, the bolster is located the below of framework, the lower extreme of core pin with bolster rotatable coupling. The invention can not only reduce the length of the center pin of the central suspension device, but also limit the lower end of the center pin so as to reduce the swing amplitude of the center pin, further reduce the swing amplitude of the frame, reduce the opening size of the track beam, achieve the purpose of reducing the structural size of the track beam and the pier, further reduce the weight of the pier and the track beam and reduce the construction cost.

Description

Central suspension device

Technical Field

The invention belongs to the technical field of rail transit, and particularly relates to a central suspension device.

Background

The suspension type rail transit system adopts a box-shaped section rail beam with an opening at the bottom, a vehicle frame runs below the rail beam, and the vehicle frame and the rail beam are connected by a bogie.

In the prior art, the swing bolster of the bogie is mostly positioned above the framework, the upper end of a center pin of a central suspension device movably penetrates through the swing bolster, and the lower end of the center pin of the central suspension device is connected with a frame positioned below the bogie.

Disclosure of Invention

The invention provides a central suspension device for solving the technical problems that the size of a track beam needs to be enlarged, the weight of the track beam and a pier column for supporting the track beam is increased and the construction cost is increased due to the fact that a swing bolster is located above a framework in the prior art.

The invention realizes the purpose through the following technical scheme:

a central suspension device comprises a center pin and a swing bolster, wherein the upper end of the center pin is suspended on a framework of a bogie, the swing bolster is positioned below the framework, and the lower end of the center pin is rotatably connected with the swing bolster.

Furthermore, the upper end of the center pin is provided with a limiting cap.

Furthermore, the device also comprises two swing shock absorbers, the upper ends of the two swing shock absorbers are respectively connected to the two transverse ends of the limiting cap, the lower ends of the two swing shock absorbers are connected to the frame, and the swing bolster is arranged below the frame.

Furthermore, the two swing shock absorbers are splayed, and the included angle between the central shaft of each swing shock absorber and the top surface of the frame is 60 degrees.

Furthermore, the two transverse ends of the swing bolster are provided with shock absorber mounting seats;

the device further comprises two vertical shock absorbers, the vertical shock absorbers and the shock absorber mounting seats are arranged in a one-to-one correspondence mode, the lower ends of the vertical shock absorbers are connected to the corresponding shock absorber mounting seats, and the upper ends of the two vertical shock absorbers are connected to the two transverse ends of the frame.

Furthermore, a connecting hole is vertically formed in the middle of the swing bolster, the lower end of the center pin penetrates through the frame, and the lower end of the center pin is arranged in the connecting hole;

the device further comprises a connecting pin, the middle of the connecting pin penetrates through the lower end of the center pin along the longitudinal movement direction, two ends of the connecting pin penetrate through the swing bolster movably, and locking screws are arranged at two ends of the connecting pin.

Furthermore, the device also comprises a plurality of elastic pieces, the elastic pieces are arranged at intervals around the central shaft of the central pin, and two ends of each elastic piece are respectively connected between the swing bolster and the frame.

Furthermore, the device also comprises a stopping component arranged on the frame, wherein the stopping component comprises two transverse stopping components and two longitudinal stopping components, the two transverse stopping components are arranged on the two transverse sides of the center pin, the two longitudinal stopping components are arranged on the two longitudinal sides of the center pin, and the two longitudinal stopping components are arranged on the two longitudinal sides of the center pin.

Still further, the stopper assemblies are vertically provided in two.

Furthermore, the longitudinal two sides of the lower end of the center pin are provided with rabbets, a base plate is arranged in each rabbet, and the connecting pin penetrates through the two base plates.

The invention has the beneficial effects that:

the invention discloses a central suspension device which comprises a center pin and a swing bolster, wherein the upper end of the center pin is suspended on a framework of a bogie, the swing bolster is positioned below the framework, the swing bolster comprises the swing bolster, and the lower end of the center pin is rotatably connected with the swing bolster.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a suspended rail transit system according to an embodiment of the present invention;

FIG. 2 is a schematic illustration of the vehicle of FIG. 1;

FIG. 3 is a top view of FIG. 2;

FIG. 4 is a schematic structural view of the truck of FIG. 2;

FIG. 5 is a schematic structural view of the framework of FIG. 4;

FIG. 6 is a schematic view of the drive mechanism of FIG. 4;

FIG. 7 is a schematic illustration of the construction of the bolster of FIG. 4;

FIG. 8 is an internal schematic view of the bolster of FIG. 7;

FIG. 9 is a schematic structural view of the first web of FIG. 8;

FIG. 10 is a schematic view of the mounting of the spring mount;

FIG. 11 is a schematic view of the central suspension of FIG. 4;

FIG. 12 is a side view schematic of FIG. 10;

FIG. 13 is a schematic structural view of the vehicle frame of FIG. 1;

FIG. 14 is a schematic view of the support box girder of FIG. 13 with the top plate removed;

fig. 15 is a schematic structural view of the supporting box girder of fig. 13 with the bracing plate removed.

In the drawings: a track beam-a, a pier column-b, an integrated unit-c, a vehicle frame-100, a bogie-200, an electric traction device-300, a driving mechanism-1, a guide wheel-2, a stabilizing wheel-3, a framework-4, an upper chord beam-41, a brake hanging seat 410, a longitudinal baffle-411, a safety rope seat-412, a connecting beam-42, a first motor mounting block-421, a second motor mounting block 422, a first thread hole-423, a lower chord beam-43, a second thread hole-431, a central beam-44, a buckle plate-441, a wheel set mounting seat-45, a responder mounting seat-46, a current collector mounting seat-47, a pin bush-48, an abrasion plate-49, a swing bolster-5, an upper cover plate-51, a lower cover plate-52, a second web plate-53, a first web plate-54, an arc plate-541, a splicing seam-542, a pin sleeve-56, a longitudinal stop-57, a first elastic supporting seat 58, a bottom plate-581, an elastic supporting navel-582, a second rib plate-59, a third rib plate-510, a first rib plate-511, a central suspension device-6, a center pin-61, a swing damper-62, a vertical damper-63 elastic piece-64, a transverse stop-65, a connecting pin-66, a backing plate-67, a limit cap-68, a longitudinal stop-69, a safety rope-7, a current collector-8, a brake disc-9, a basic frame 10, a traveling wheel-11, a gear box-12, a brake disc mounting seat-13, a coupler-14, a traction motor 15 and a gear box bolt-16, the main longitudinal beam-17, the center pin hole-18, the supporting box beam 19, the top plate-191, the supporting plate-192, the connecting plate-193, the first reinforcing plate-194, the second reinforcing plate-195, the third reinforcing plate-196, the second elastic element seat-20, the bending part-21, the rotation stop-22, the first cross beam-23, the side longitudinal rod-24, the connecting rod-25, the second cross beam-26, the lock-27 and the connecting seat-28.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The embodiment of the invention provides a suspension type rail transit system.

Fig. 1 is a schematic structural diagram of a suspended track transportation system according to an embodiment of the present invention, and referring to fig. 1, the system includes a vehicle and a track beam a, the track beam a is supported by a pier b, the vehicle includes a vehicle frame 100 and a plurality of bogies 200, the plurality of bogies 200 can travel on the track beam a, the vehicle frame 100 and the track beam a are connected by the plurality of bogies 200, and the vehicle frame 100 can be driven to travel under the track beam a by the driving of the bogies 200.

Referring to fig. 1, in the embodiment of the present invention, the bottom of the carriage 100 may be provided with an integrated unit c, which may be a train or a container with goods, to move the train or the container, so as to transport passengers or goods.

Fig. 2 is a schematic structural view of the vehicle in fig. 1, and fig. 3 is a schematic top view of fig. 2. Referring to fig. 2 and 3, the vehicle according to the embodiment of the present invention includes a frame 100 and a bogie 200, and an electric traction device 300 is provided on the frame 2.

Fig. 4 is a schematic structural diagram of the bogie in fig. 2, and in combination with fig. 4, the bogie of the embodiment of the invention comprises a driving mechanism 1, guide wheels 2, stabilizing wheels 3, a frame 4, a bolster 5, a central suspension device 6, a safety rope 7, a current collector 8 and a brake disc 9.

Fig. 5 is a schematic structural diagram of the framework in fig. 4, and referring to fig. 5, the framework 4 of the embodiment includes an upper chord beam 41, a lower chord beam 43 and a connecting beam 42, the upper chord beam 41 and the lower chord beam 43 are vertically disposed opposite to each other, and the upper chord beam 41 and the lower chord beam 43 are connected by a plurality of connecting beams 42 disposed at intervals, so that the framework 4 of the bogie of the embodiment of the invention is a vertically extending structure, and compared with the structure of a bogie that extends horizontally in the prior art, the transverse dimension of the bogie can be reduced, so as to reduce the structural dimension of the bogie, reduce the weight of the bogie, further reduce the structural dimensions of the rail beam and the pier stud supporting the rail beam, and reduce the amount of steel used, so as to achieve the purpose of reducing the line construction cost.

Referring to fig. 5, in the embodiment of the present invention, a transponder mounting seat 46 and a current collector mounting seat 47 are spaced apart from each other on the top of the upper chord 41, the current collector 8 is mounted on the current collector mounting seat 47, and a transponder is mounted on the transponder mounting seat 46.

Referring to fig. 5, in the present embodiment, longitudinal stoppers 411 are provided at both longitudinal ends of the upper chord member 41, and when the longitudinal stoppers 411 contact stoppers provided on the rail beam, the bogie stops.

Referring to fig. 5, in the embodiment of the present invention, two connecting beams 42 are provided, two connecting beams 42 are oppositely provided at both ends of the upper chord member 41 and the lower chord member 43, and the middle portion of the upper chord member 41 and the middle portion of the lower chord member 43 are connected by two opposite central beams 44 to reinforce the structure, so that the whole framework forms a structure like a Chinese character 'mu'.

Furthermore, in the embodiment of the present invention, two ends of the upper chord beam 41 may be fixedly connected to the middle portion of the top end of the connecting beam 42 by welding or integrally forming, two ends of the lower chord beam 43 are bent upward to form bent portions, and the bent portions at two ends of the lower chord beam 43 may also be fixedly connected to the middle portion of the bottom end of the connecting beam 42 by welding or integrally forming, so that the vertical dimension of the component may be enlarged, and an installation space is provided for installing the rest components.

Referring to fig. 5, in the embodiment of the present invention, a gusset plate 441 is further disposed between each of the center beam 44 and the lower chord beam 43 to further strengthen the structure between the center beam 44 and the lower chord beam 43.

Further, referring to fig. 5, the buckle plate 441 of the embodiment of the present invention is disposed at the connection between the central beam 44 and the lower chord beam 43, and the two buckle plates 441 corresponding to the central beam 44 may be symmetrically disposed opposite to each other.

Fig. 6 is a schematic structural diagram of the driving mechanism in fig. 4, and referring to fig. 4 to 6, a plurality of driving mechanisms 1 according to an embodiment of the present invention are sequentially arranged along a longitudinal direction, the driving mechanisms 1 and the connecting beams 42 are arranged in a one-to-one correspondence, each driving mechanism 1 includes a traction motor 15, a gear box 12 and a traveling wheel 11, the traction motor 15 is fixedly arranged on the connecting beam 42 corresponding to the driving mechanism 1, an output end of the traction motor 15 is connected with an input end of the gear box 12, the gear box 12 is fixedly connected to the upper chord beam 41, the gear box 12 has two output ends, the two output ends of the gear box 12 are arranged along a transverse direction, and one traveling wheel 11 is correspondingly arranged on each output end of the gear box.

Specifically, in the embodiment of the present invention, two driving mechanisms 1 and two connecting beams 42 are provided.

With reference to fig. 4-6, in this embodiment, the connecting beam 42 may be square, the inner side of the side portion of the connecting beam 42 is provided with a first motor mounting block 421, the inner side of the top portion of the connecting beam 42 is provided with a second motor mounting block 422, the traction motor 15 of the driving mechanism 1 of the bogie is fixedly disposed inside the connecting beam 42 through the first motor mounting block 421 and the second motor mounting block 422, the bottom portion of the upper chord beam 41 is provided with two wheel set mounting seats 45, and the guide wheel and the stabilizing wheel of each driving mechanism 1 of the bogie are correspondingly mounted on one wheel set mounting seat 45.

Referring to fig. 6, the output end of the traction motor 15 according to the embodiment of the present invention is connected to the input end of the gear box 12 through a coupling 14, the coupling 14 is provided with a brake disc mounting seat 13, and the brake disc mounting seat 13 is provided with a brake disc 9.

With reference to fig. 4-6, in the embodiment of the present invention, the braking hanging seats 410 are spaced at the bottom of the upper chord beam 41, the braking device is installed on the braking hanging seats 410, and the output end of the braking device acts on the brake disc 9, so as to achieve the purpose of braking the output of the traction motor 15.

Referring to fig. 4 to 6, in the embodiment of the present invention, the top surface of the gear case 12 of each driving mechanism 1 may be fixedly connected to the bottom of the upper chord member 41 by a plurality of gear case bolts 16 to assemble the driving mechanism 1 to the frame 4.

With reference to fig. 4 and 5, in the embodiment of the present invention, the bottom of the upper chord beam 41 is provided with a wheel set mounting seat 45 corresponding to the driving mechanism, two lateral sides of each wheel axle mounting seat 45 are provided with a set of auxiliary wheels, each auxiliary wheel includes a stabilizing wheel 3 at the upper end and a guide wheel 2 at the lower end, and the guide wheels 2 and the stabilizing wheels 3 are matched with corresponding tracks of the track beam a to improve the stability of the vehicle during operation.

Further, in the present embodiment, the span between the stabilizing wheels 3 on both sides of each wheel axle mount 45 is smaller than the span between the guide wheels 2 on both sides, so as to facilitate smooth passage of the vehicle through a curved path.

Referring to fig. 4 and 5, the connecting beam 42 and the lower chord beam 43 in the embodiment of the present invention are both hollow structures, the connecting beam 42 is provided with a first threading hole 423, the lower chord beam 43 is provided with a second threading hole 431, and the connecting beam 42 and the lower chord beam 43 function as a trunking for guiding a pipeline on the bogie 200 to the frame 100 to prevent the pipeline from touching the track beam.

With reference to fig. 4 and 5, the lower chord 43 of the embodiment of the present invention is further provided with two safety rope seats 412 at intervals, the safety rope seats 412 and the safety ropes 7 are arranged in a one-to-one correspondence, the middle portions of the safety ropes 7 are mounted on the corresponding safety rope seats 412, two ends of the safety ropes 7 can pass through the upper portion of the framework lower chord and the lower portion of the frame, and the safety rope has a protection effect on safety accidents caused by the fracture of the center pin and the connecting pin below, so as to improve the safety of the vehicle during operation.

Further, referring to fig. 5, two safety rope seats 412 according to the embodiment of the present invention may be disposed on opposite sides of two pinch plates 441.

Referring to fig. 5, in the embodiment of the present invention, a through hole is formed in the middle of the lower chord 43, a pin bushing 48 is fixedly disposed in the through hole, and a wear plate 49 is disposed on the lower chord 43, and the wear plate 49 is located outside the through hole and between the two central beams 44.

Referring to fig. 4, the bolster 5 according to the embodiment of the present invention is suspended in the middle of the lower chord 43 through the central suspension device 6, wherein the central suspension device 6 includes a center pin 61, the upper end of the center pin 61 is provided with a stop cap 610, the stop cap is located on the wear plate 49, the upper end of the center pin 61 passes through the pin sleeve 48, and the upper end of the center pin 61 is suspended on the lower chord 43 through the stop cap, the bolster 5 is connected to the lower end of the center pin 61, and the bolster 5 is located below the frame 100, so that the vehicle can be connected to the bogie.

Fig. 7 is a schematic structural view of the bolster in fig. 4, and in combination with fig. 7, the bolster 5 according to the embodiment of the present invention is located below the frame 4 of the bogie, a connecting hole is vertically formed in the middle of the bolster 5, and the lower end of the center pin 61 is rotatably connected to the connecting hole, so as to connect the center pin 61 to the bolster 5.

In the embodiment of the invention, the upper end of the center pin 61 can be in close clearance movable fit with the pin sleeve 48 and hung on the lower chord beam 43 of the framework 4, and the swing bolster 5 limits the lower end of the center pin 61, so that the length of the center pin 61 can be reduced, the swing amplitude of the frame can be further reduced, the opening size of the track beam can be reduced, the structural size of the pier column can be reduced, and the purpose of reducing the weight of the pier column and the track beam can be achieved.

Fig. 8 is a schematic view of an internal structure of the bolster in fig. 7, and referring to fig. 7 and 8, a bolster 5 according to an embodiment of the present invention includes an upper cover plate 51, a lower cover plate 52, and a web, where the upper cover plate 51 and the lower cover plate 52 are vertically disposed opposite to each other, a circumferential surface of the upper cover plate 51 and a circumferential surface of the lower cover plate 52 are connected by the web to form a box-shaped structure, and a through hole through which a center pin 61 passes is formed in a middle portion of the upper cover plate 51.

Referring to fig. 7, the upper and

lower cover plates

51 and 52 according to the embodiment of the present invention are narrowed at the middle of the longitudinal sides thereof to reduce the weight of the bolster 5.

Further, with reference to fig. 7 and 8, the web plate according to the embodiment of the present invention includes a first web plate 54 and a second web plate 53, the first web plate 54 is in a kidney shape, the length direction of the kidney shape is a longitudinal direction, two first web plates 54 are provided, the two first web plates 54 are oppositely disposed between the upper cover plate 51 and the lower cover plate 52 along the transverse direction, and the two first web plates 54 are connected by a plurality of second web plates 53 disposed at intervals, which ensures that the bolster 5 has sufficient connection strength, and thus, the weight is reduced.

Referring to fig. 7 and 8, the second webs 53 of the embodiment of the present invention are divided into two opposite groups along the longitudinal direction, a coaxial mounting hole is formed in the middle of each second web 53, a connecting pin 66 is mounted in the mounting hole, the lower end of the center pin 61 is disposed between the two groups of second webs 53, and the middle of the connecting pin 66 rotatably penetrates through the lower end of the center pin 61, so as to rotatably connect the lower end of the center pin 61 and the bolster 5.

Further, with reference to fig. 4, 7 and 8, the pin sleeves 56 may be disposed in the mounting holes according to the embodiment of the present invention, and the two ends of the connecting pin 66 are fixed to the pin sleeves 56 in the corresponding mounting holes, so that the wear of the central pin 61 on the mounting holes may be reduced, and the service life of the bolster may be prolonged by replacing the pin sleeves 56.

Further, in the embodiment of the present invention, both ends of the connecting pin 66 are provided with locking members, and the locking members are provided at the outer ends of the pin sleeves 56 at the same ends, so as to realize the assembly of the connecting pin 66 on the bolster.

The locking member of the embodiment of the present invention may be a locking screw, etc., and the embodiment of the present invention is not limited thereto.

Fig. 9 is a schematic structural diagram of the first web in fig. 8, and in combination with the schematic structural diagram, each first web 54 in the embodiment of the present invention is formed by welding two arc plates 541, two splicing seams 542 are formed after the two arc plates 541 are welded, and the two splicing seams 542 are diagonally and symmetrically arranged to avoid interference with the following second transverse rib 59.

Referring to fig. 7, in the embodiment of the present invention, two first elastic element seats 58 are respectively disposed at two longitudinal ends of the bolster 5, fig. 10 is a schematic installation diagram of the elastic element seats, and referring to fig. 10, in the embodiment, each first elastic element seat 58 includes a bottom plate 581 and an elastic supporting navel 582, and the elastic supporting navel 582 is fixedly disposed in the middle of the top surface of the bottom plate 581.

Further, with reference to fig. 8 and 10, in the embodiment of the present invention, a first rib plate 511 is disposed in each first web plate 54, the first rib plate 511 divides the first web plate 54 into two cavities along the transverse direction, a second rib plate 59 and a third rib plate 510 are disposed in each cavity, the second rib plate 59 and the third rib plate 510 are in a cross structure, gaps are disposed at tops of the second rib plate 59 and the third rib plate 510, an avoidance hole corresponding to the gap is disposed in the upper cover plate 51, an elastic support umbilical 582 is disposed corresponding to the gap, a bottom plate 581 of the first elastic member seat 58 is fixedly disposed on the corresponding gap, and the elastic support umbilical 582 penetrates through the avoidance hole disposed in the upper cover plate 51 and corresponding to the bottom plate 581, so as to implement the installation of the first elastic member seat 58 on the swing bolster 5.

In the embodiment of the present invention, both sides of the second rib plate 59 and the third rib plate 510 at the notch are inclined surfaces, and the elastic member umbilicus is in a frustum shape, so as to avoid rubber bulge caused by the elastic member 64 mounted on the first elastic support base 58 under the heavy vehicle working condition, and further prevent the rubber and the metal member from being damaged due to friction.

With reference to fig. 8, in the present embodiment, the side portions of the two first webs 54 that face away from each other are provided with the shock absorber mounting seats 55 for mounting the shock absorbers, and the two ends of the longitudinal side of the bolster 5 are provided with the longitudinal stoppers 57 for preventing the bolster from being damaged by external impact during swinging.

Fig. 11 is a schematic structural view of the center suspension device in fig. 4, fig. 12 is a schematic side view of fig. 11, and in combination with fig. 4, fig. 11 and fig. 12, the center suspension device 6 according to the embodiment of the present invention includes a sway damper 62, a vertical damper 63, an elastic member 64, a lateral stopper 65, a connecting pin 66, a pad plate 67, a longitudinal stopper 69, and the bolster 5 described above, in addition to the center pin 61.

Referring to fig. 11, in the embodiment of the present invention, the stopper 68 provided at the upper end of the center pin 61 may be integrally formed with the center pin 61 or welded thereto.

In this embodiment, the limiting cap 68 may be a waist-shaped cap, and the length direction of the limiting cap 68 is transverse.

With reference to fig. 11 and 12, two swing dampers 62 according to the embodiment of the present invention are provided, the upper ends of the two swing dampers 62 are respectively connected to the two transverse ends of the limiting cap, the lower ends of the two swing dampers 62 are connected to the frame, and the bolster 5 is disposed below the frame.

Preferably, in the present embodiment, the two roll dampers 62 are splayed, and the angle between the central axis of the roll damper 62 and the top surface of the frame is preferably 60 °.

With reference to fig. 11 and 12, in the embodiment of the present invention, two vertical shock absorbers 63 are also provided, the vertical shock absorbers 63 and the shock absorber mounting seats 55 are arranged in a one-to-one correspondence, the lower ends of the vertical shock absorbers 63 are connected to the corresponding shock absorber mounting seats 55, and the upper ends of the two vertical shock absorbers 63 are connected to the two lateral ends of the frame.

According to the embodiment of the invention, the vibration damping performance of the vehicle during operation can be improved by arranging the swing shock absorber 62 and the vertical shock absorber 63, wherein the central shaft of the swing shock absorber 62 is inclined, the swing shock absorber and the vertical vibration damping are provided at the same time, and the vertical shock absorber 63 can be eliminated if the vehicle runs at a lower speed.

In the embodiment of the present invention, the lower end of the center pin 61 penetrates the frame, and it is engaged with the coupling pin 66 so that the lower end of the center pin 61 is rotatably coupled in the coupling hole of the bolster 5.

Referring to fig. 11 and 12, a plurality of elastic members 64 are provided according to the embodiment of the present invention, the plurality of elastic members 64 are spaced around the center axis of the center pin 61, and both ends of the elastic members 64 are connected between the bolster and the frame, respectively.

Specifically, the lower end of the elastic element 64 of the present embodiment is assembled in the first elastic support navel 582 on the first elastic support base 58, and the upper end of the elastic element 64 is connected to the bottom of the frame, so that the aim of the vehicle during operation can be buffered, the center pin and the frame can be not directly connected, and the center pin and the frame can form a flexible connection through the arrangement of the elastic element, thereby avoiding the rigid impact influence caused by the direct connection between the center pin and the frame in the prior art, improving the stress level of the frame, and improving the fatigue life of the frame.

In addition, the elastic part and the swing bolster are arranged below the frame, so that the overall height of the vehicle is not increased, the transverse swing rigidity of the vehicle is small, the frame has very small swing rigidity, transverse movement rigidity and side rolling rigidity, the dynamic performance is excellent, the stress of the frame and the swing bolster can be pressure, and the fatigue performance of a welding seam and the suspension safety are good.

Referring to fig. 11 and 12, in the embodiment of the present invention, the transverse stoppers 65 and the longitudinal stoppers 69 constitute a stopper assembly, the stopper assembly is mounted on the frame, two transverse stoppers 65 are disposed opposite to each other, two transverse stoppers 65 are disposed on two transverse sides of the center pin 61, two longitudinal stoppers 69 are disposed opposite to each other, and two longitudinal stoppers 69 are disposed on two longitudinal sides of the center pin 61 to limit the rotation angle of the center pin.

Preferably, the two lateral stops 65 of the stop assembly in the present embodiment are vertically disposed to enhance the ability to limit the lateral displacement swing of the vehicle frame.

Referring to fig. 12, in the present embodiment, the center pin 61 is provided with spigots at both sides of the lower end thereof in the longitudinal direction, each of the spigots is provided with a backing plate 67, the connecting pin 66 passes through the two backing plates 67, and the backing plates 16 can prevent friction between the second web and the center pin 61, thereby reducing the strength and the service life of the center pin 61.

Because the center pin 61 of the embodiment of the invention is suspended in the middle of the underslung beam 43, that is, the center pin 61 is installed at the bottom of the framework 4, compared with the technical scheme that the center pin 61 is installed at the top of the framework 4 in the prior art, the length of the center pin 61 can be reduced, and the length is shortened from the original 2m to less than 600mm, so that the manufacturing cost can be greatly reduced, the additional bending moment applied to the center pin during the vehicle running can be greatly reduced, and the safety is improved.

In addition, the framework in the embodiment of the invention runs on the track beam through the driving mechanism, the swing bolster is positioned below the frame, and the swing amplitude of the swing bolster and the frame can be limited by limiting the two ends of the center pin, so that the opening size of the track beam can be reduced, the structural size of the pier column can be reduced, the weight of the pier column and the track beam can be reduced, the steel can be saved, and the cost can be reduced.

Fig. 13 is a schematic structural diagram of the vehicle frame shown in fig. 1, and with reference to fig. 13, the vehicle frame 100 according to the embodiment of the present invention includes a base frame 10, the base frame 10 includes a main longitudinal beam 17, the main longitudinal beam 17 may adopt a fish-belly beam structure with a high middle and low ends, a plurality of center pin holes 18 are arranged at intervals on the main longitudinal beam, the center pin holes 18 and the center pins 61 are arranged in a one-to-one correspondence manner, the lower ends of the center pins 61 movably penetrate through the corresponding center pin holes 18, the lower ends of the center pins 18 are connected with the bolster 5, the bolster 5 is located below the base frame, and a plurality of the above-mentioned elastic members 55 are arranged between the bolster 5.

Specifically, in the present embodiment, two corresponding center pin holes 18 and two corresponding center pins 61 are provided, and the elastic members 55 may be springs, which are provided with four elastic members 5, which are spaced around the center axis of the center pin hole 18.

Referring to fig. 12, in the present embodiment, the main longitudinal beam 17 has supporting box girders 19 corresponding to the center pin holes 18, one center pin hole 18 is provided in the middle of each supporting box girder 19, and a plurality of elastic members 55 are provided between the bolster 5 and the supporting box girder 19.

In the embodiment of the invention, the center pin is used for connecting the frame of the bogie and the swing bolster, the elastic part is used for vertical supporting force between the swing bolster and the frame and connecting the swing bolster and the frame, the elastic part can be a rubber spring and provides a vertical vibration damping function, the upper end surface and the lower end surface of the elastic part can be twisted relatively within a certain angle range, and when the bogie drives the swing bolster to steer, the elastic part can be twisted, the frame can steer along with the elastic part to adapt to the steering of the bogie, and the elastic part can form dispersed support on the frame to improve the stress level of the frame and prolong the fatigue life of the frame.

As described above, in the present embodiment, four elastic members 64 are provided, and four elastic members 64 are provided at intervals around the central axis of the center pin hole 18.

Fig. 14 is a structural view of the supporting box girder of fig. 13 with the top plate removed, fig. 15 is a structural view of the supporting box girder of fig. 13 with the gusset removed, and in conjunction with fig. 12-14, the supporting box girder 19 of the present embodiment includes a top plate 191, a gusset 192 and a connecting plate 193, the top plate 191 and the gusset 192 are disposed opposite to each other, the periphery of the top plate 191 and the periphery of the gusset 192 are connected by the connecting plate 193 to form a box-shaped structure, the top plate 191 and the gusset 192 are each provided with a center pin hole 18 through which a center pin passes, and the main longitudinal girder 17 is fixed through the connecting plate 193 to realize the assembly of the supporting box girder 19 on the main longitudinal girder 17, wherein the main longitudinal girder 17 divides the box.

With reference to fig. 14 to 15, the supporting box girder 19 of the present embodiment further includes a first reinforcing plate 194, a second reinforcing plate 195 and a third reinforcing plate 196, the first reinforcing plate 194 is disposed in each cavity, the first reinforcing plate 194 is disposed along the transverse direction, the cavity where the first reinforcing plate 194 is disposed is divided into two chambers, the second reinforcing plate 195 and the third reinforcing plate 196 are disposed in each chamber, the second reinforcing plate 195 and the third reinforcing plate 196 are in a cross structure, and the first reinforcing plate 194, the second reinforcing plate 195 and the third reinforcing plate 196 can reinforce the structure of the supporting box girder.

In this embodiment, the second reinforcing plate 195 and the third reinforcing plate 196 have notches at the bottom thereof, the supporting plate 192 has avoiding holes corresponding to the notches, and the upper end of each elastic member 64 is correspondingly connected to one notch through the second elastic member seat 20, so as to mount the elastic member 64 on the supporting box girder.

The structure of the second elastic element seat 20 and the first elastic element seat 58 of this embodiment is the same, and all include bottom plate and elastic support navel, the fixed middle part that sets up in the bottom surface of bottom plate of elastic support navel, the fixed setting of bottom plate of second elastic element seat 20 is on the breach that corresponds, and the elastic support navel of second elastic element seat passes the hole of dodging that fagging 192 set up, and the upper end of elastic element 64 is connected on the elastic support navel.

Similarly, in this embodiment, the two sides of the second reinforcing plate 195 and the third reinforcing plate 196 at the notch are both inclined surfaces, and the elastic part umbilicus is in a frustum shape, so as to avoid the rubber bulge caused by the elastic part 64 mounted on the second elastic support seat 20 under the heavy vehicle working condition, and further prevent the rubber and the metal part from being damaged due to friction.

Further, in conjunction with fig. 13-15, the stop assembly of the present embodiment is disposed within the support box rail 19 of the vehicle frame to limit the longitudinal and lateral rotation angles of the vehicle frame.

With reference to fig. 13-15, in this embodiment, two longitudinal sides of the bottom of the supporting box beam 19 are bent downward to form bent portions 21, and each bent portion is provided with a rotation stop 22 to enhance the rotation limiting function of the base frame, so as to limit the rotation angle of the frame, prevent adverse effects caused by direct collision between the frame and the bolster when the frame swings, and improve the reliability of vehicle operation.

Referring to fig. 14 and 15, in the present embodiment, the support box beam 19 is provided with the connection seats 28 at both lateral ends thereof, and the lower ends of the two rocking dampers 62 are connected to the connection seats 28 provided at both lateral ends of the support box beam 19, respectively.

With reference to fig. 12, the base frame of the present embodiment further includes first cross members 23, two first cross members 23 are disposed on two longitudinal sides of each supporting box beam 19, and the middle portions of the two first cross members 23 are connected by the main longitudinal beam 17, so that the load-bearing capacity of the vehicle frame can be improved.

Further, in this embodiment, a groove is provided in the middle of each first cross beam 23, and the main longitudinal beam 17 may be fixedly embedded in the grooves in the middle of the plurality of first cross beams 23 in a welding manner.

With reference to fig. 12, in this embodiment, the base frame further includes side vertical bars 24 and connecting rods 25, the ends of the first cross beams 23 located on the same side are connected by the side vertical bars 24, and the side vertical bars 24 and the main longitudinal beam 17 are connected by a plurality of connecting rods 25 arranged at intervals, so as to further improve the bearing capacity of the vehicle frame.

Referring to fig. 12, in this embodiment, the base frame further includes a plurality of second cross members 26, inner ends of the plurality of second cross members 26 are vertically connected to the sides of the main longitudinal member 17, and outer ends of the plurality of second cross members 26 are connected to the side longitudinal members 24, so as to further improve the carrying capacity of the frame.

Further, the electric traction device 300 of this embodiment may be disposed on the second beam 26, and both ends of the first beam 23 may be disposed with locks 27 for connecting train cars or containers with goods, and the locks 27 may be the container transfer anti-falling device in chinese patent No. 2018222496756, which is not described in detail herein.

In summary, in the suspension type rail transit system according to the embodiment of the present invention, the member of the bogie is set to a vertically extending structure, the upper end of the center pin is suspended in the middle of the lower chord beam of the frame of the bogie, and the lower end of the center pin passes through the frame and is rotatably connected to the bolster, so that the length of the center pin can be reduced, the swing of the vehicle during traveling can be reduced, the structural size of the rail beam and the pier supporting the rail beam can be improved, the steel consumption can be reduced, the line construction cost can be reduced, and the suspension type rail transit system has a good practical value.

The above-mentioned embodiments are only for convenience of description of the invention, and are not intended to limit the invention in any way, and those skilled in the art will recognize that the invention can be practiced without departing from the spirit and scope of the invention.

Claims

1. A central suspension device is characterized by comprising a center pin and a swing bolster, wherein the upper end of the center pin is suspended on a framework of a bogie, the swing bolster is positioned below the framework, and the lower end of the center pin is rotatably connected with the swing bolster.

2. A central suspension arrangement according to claim 1, characterised in that the upper end of the kingpin is provided with a stop cap.

3. The center suspension device according to claim 2, further comprising two swing dampers, wherein the upper ends of the two swing dampers are connected to the two lateral ends of the restraining cap, the lower ends of the two swing dampers are connected to the vehicle frame, and the swing bolster is disposed below the vehicle frame.

4. A centre suspension according to claim 3 wherein both of said roll dampers are splayed and the angle between the central axis of said roll damper and the top surface of said frame is 60 °.

5. The center suspension device according to claim 3, wherein both lateral ends of the bolster are provided with damper mounts;

6. The center suspension device according to claim 5, wherein a connecting hole is vertically provided in a middle portion of the bolster, a lower end of the center pin penetrates the frame, and a lower end of the center pin is disposed in the connecting hole;

7. The center suspension apparatus according to claim 6, further comprising a plurality of elastic members provided at intervals around a center axis of the center pin, both ends of the elastic members being connected between the bolster and the frame, respectively.

8. The center suspension apparatus according to claim 7, further comprising a stopper assembly mounted on the vehicle frame, said stopper assembly including two lateral stoppers and two longitudinal stoppers, said two lateral stoppers being disposed oppositely on both lateral sides of said center pin, said two longitudinal stoppers being disposed oppositely on both longitudinal sides of said center pin.

9. The center hitch of claim 8, wherein there are two of the stop assemblies arranged vertically.

10. The center suspension apparatus according to claim 6, wherein the center pin is provided at both longitudinal sides of its lower end with spigots, each of which is provided with a pad plate, and the connecting pin passes through both of the pad plates.