CN212709411U - Single-axle bogie of PRT suspension type monorail vehicle - Google Patents
Single-axle bogie of PRT suspension type monorail vehicle Download PDFInfo
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- CN212709411U CN212709411U CN202021225294.5U CN202021225294U CN212709411U CN 212709411 U CN212709411 U CN 212709411U CN 202021225294 U CN202021225294 U CN 202021225294U CN 212709411 U CN212709411 U CN 212709411U
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Abstract
The utility model provides a PRT suspension type monorail vehicle single-axle bogie, which comprises a linear framework of the bogie, wherein the linear framework comprises a linear longitudinal beam, a vertical beam and a guide wheel mounting seat, the top end of the vertical beam is transversely provided with a stabilizing wheel mounting seat, and the whole bogie is only provided with a pair of walking wheels, so that the bogie is a single-axle bogie; the lower part of the longitudinal beam is provided with a central traction pin mounting seat, a central traction pin is sleeved on the central traction pin mounting seat, and the central traction pin is connected with the linear framework and the suspension device. The utility model adopts a straight-line frame main body, and is matched with a single-shaft driving structure, so that the longitudinal distance between the front guide wheel and the rear guide wheel is shortened, and the passing capacity of the bogie on a small-radius curve is improved; the bogie obtains smaller structural size, thereby greatly reducing the volume of the track beam. Meanwhile, a direct driving mode of the hub motor is adopted, a gear driving structure is omitted, noise generated in vehicle operation is reduced, and the stability of vehicle operation is guaranteed by the innovative suspension device.
Description
Technical Field
The utility model relates to an urban rail transit field especially relates to a PRT suspension type monorail vehicle bogie.
Background
With the continuous acceleration of urbanization in China, urban public transport faces a severe test. The development speed of urban public transport cannot meet the travel demand of people, and urban traffic becomes increasingly congested. In order to solve the problem of public transportation, the development of urban rail transit becomes a new development direction. At present, the most mainstream rail transit system is a subway system, and the pressure of urban public transport can be greatly relieved due to the characteristics of high efficiency and high speed. But the construction period of the subway system is long, the investment cost is high, the requirement on construction is high, and the subway system cannot be generally applied to all cities. And the construction of the road surface rail transit can occupy saturated road surface resources, so that the suspension type monorail transit system becomes a new idea and can solve the problems.
The suspended monorail traffic system has the advantages of short construction period, low investment cost, small limitation on terrain factors and the like, and can be well integrated into the existing public traffic system. The suspension type monorail traffic system is a traffic system with medium and small traffic volume, has the characteristics of high speed, high safety, low running noise, environmental protection and the like, realizes zero-distance transfer with other rail traffic systems, and is unified and cooperated to relieve urban traffic. The rail of the suspension type rail transit system is suspended in the air by adopting steel bars or cement stand columns, does not occupy ground traffic, can fully utilize urban space, but has larger volume at present, and causes certain influence on urban street landscape.
SUMMERY OF THE UTILITY MODEL
In view of the above technical shortcoming of current suspension type track traffic, the utility model aims at providing a PRT suspension type monorail vehicle single-axle bogie adopts a unipolar drive cooperation style of calligraphy framework for the structural dimension of whole bogie further reduces, when improving the vehicle curve and passing through the ability, and then effectively reduces suspension type monorail transit system's track volume.
The utility model discloses the technical problem that still need solve provides foretell suspension type monorail vehicle's unipolar bogie, realizes being connected between bogie and the automobile body and the transmission of power, still needs to make the unipolar bogie keep steady in the operation process simultaneously.
In order to solve the technical problem, the utility model discloses a technical scheme as follows:
a PRT suspension type single-rail vehicle single-axle bogie comprises a linear framework 1 of the bogie, wherein the linear framework 1 comprises a linear longitudinal beam 8 extending longitudinally, vertical beams 9 fixedly connected above two ends of the linear longitudinal beam 8 vertically, and guide wheel mounting seats 10 transversely connected to two ends of the linear longitudinal beam 8; the top end of the vertical beam 9 is transversely provided with a stabilizing wheel mounting seat 11, the two guide wheels 4 are mounted on a guide wheel mounting seat 10 and are symmetrical along the transverse two sides relative to the straight-line-shaped longitudinal beam 8, the two stabilizing wheels 5 are mounted on the stabilizing wheel mounting seat 11 and are symmetrical along the transverse two sides relative to the straight-line-shaped longitudinal beam 8, the rotating shafts of the stabilizing wheels 5 and the guide wheels 4 on the same side extend along the vertical direction and are overlapped, the longitudinal beam is only provided with a transversely extending walking wheel mounting seat 13, the walking wheel mounting seat 13 is provided with a pair of walking wheels 2, and the whole bogie is only provided with a pair of walking wheels 2, so that the bogie is a single-shaft bogie; the rotating shafts of the pair of running wheels 2 are transversely arranged, the lower part of the longitudinal beam is provided with a central traction pin mounting seat 12, a central traction pin 19 is sleeved on the central traction pin mounting seat 12, and the linear framework and the suspension device 3 are connected through the central traction pin 19.
Preferably, the running wheels 2 are rubber tires and include rubber wheels 14 and hub motors 15, which are coaxially arranged, the hub motors 15 are located inside the rubber wheels 14, and the running wheels 2 run on the track beams 7.
Preferably, a central traction pin mounting seat 12 is arranged below the linear framework 1, a vertical central traction pin 19 is fixedly connected to the central traction pin mounting seat 12, a suspension device 3 of the vehicle is fixedly connected to the bottom of the central traction pin 19, a vertically arranged anti-nod torsion bar 6 is arranged between the linear framework 1 and the suspension device 3, anti-nod torsion bar mounting seats II 33 are symmetrically arranged on two sides above the central traction pin mounting seat 12, anti-nod torsion bar mounting seats I32 are arranged on beam structures of the vehicle body hanger 20, which are parallel to each other in the transverse direction, one end of the anti-nod torsion bar 6 is hinged to the anti-nod torsion bar mounting seat II 33, and the other end of the anti-nod torsion bar mounting seat I32.
Preferably, the suspension device 3 includes a central traction pin 19, a vehicle body hanger 20, a spring damper 21, a traction link 22, and a bolster body 23; the swing bolster main body 23 is provided with a central hole, and the central traction pin 19 is vertically embedded in the central hole of the swing bolster main body 23; the vehicle body hanger 20 is located above the bolster body 23, and both ends of the spring damper 21 are rotatably connected to the vehicle body hanger 20 and the bolster body 23, respectively.
Preferably, the vehicle body hanger 20 includes four beam structures above and four support legs at the bottom, the four beam structures surround a rectangle, two of the beam structures which are longitudinally parallel to each other are symmetrically provided with spring shock absorber mounting seats I25, meanwhile, the two beam structures which are longitudinally parallel to each other are symmetrically provided with limiting mechanisms 31, one end of each limiting mechanism 31 is welded on the longitudinal beam structure of the vehicle body hanger 20, and the end surface of the other end is provided with a rectangular steel piece; and the other two beam structures which are transversely parallel to each other are provided with traction pull rod mounting seats I29.
Preferably, the bolster structure comprises a bolster main body 23 and transversely extending brackets 24 arranged at two ends of the bolster main body 23, wherein the tail end of each bracket 24 is provided with a spring damper mounting seat II26, the bolster main body 23 is provided with two traction pull rod mounting seats II30, and a connecting line of the two traction pull rod mounting seats II30 obliquely passes through a central hole in the bolster main body 23; two vertical sides of the bolster main body 23 are symmetrically provided with transverse stoppers 27, a vertical stopper 28 is connected below the transverse stopper 27, and a rectangular steel member on the end surface of the limiting mechanism 31 faces the transverse stopper 27.
Preferably, one end of the spring damper 21 is pivotally connected to the spring damper mounting base I25, and the other end is pivotally connected to the spring damper mounting base II 26.
Preferably, one end of the drag link 22 is mounted on the drag link mounting seat I29, and the other end is mounted on the drag link mounting seat II 30.
Preferably, a brake disc 16 is mounted on the hub motor inside the traveling wheel 2, a brake clamp 17 is mounted on the traveling wheel mounting base 13, and two brake pads of the brake clamp are located on the side of the brake disc 16.
Preferably, the guide wheels 4 and the stabilizing wheels 5 are both made of rubber.
Compared with the prior art, the technical scheme of the utility model following beneficial effect has:
the utility model discloses the bogie adopts a style of calligraphy framework main part, and cooperation unipolar driven structure makes the bogie obtain less structure size to the volume of track roof beam has been reduced greatly, simultaneously, adopts in-wheel motor direct drive mode, cancels the gear drive structure, reduces the noise that produces in the vehicle operation. The innovative suspension device ensures the running stability of the vehicle, and the single-shaft driving structure shortens the longitudinal distance between the front guide wheel and the rear guide wheel, thereby improving the passing capacity of the bogie on a small-radius curve. The utility model discloses a bogie structure adopts a style of calligraphy framework main part, consequently makes whole bogie structure have very little transverse dimension, and then also can effectively reduce the transverse dimension of track roof beam among the suspension type monorail transit system.
Drawings
Fig. 1 is an axonometric view of the present invention.
Fig. 2 is a left side view of the present invention.
Fig. 3 is an axonometric view of the frame of the utility model.
Fig. 4 is a drawing of the walking wheel shaft of the present invention.
Fig. 5 is an isometric view of the suspension device of the present invention.
Figure 6 is an axonometric view of the car body hanger of the utility model.
Fig. 7 is an axonometric view of the bolster of the present invention.
The suspension device comprises a straight-line-shaped framework 1, a traveling wheel 2, a suspension device 3, a guide wheel 4, a stabilizing wheel 5, a point-resistant torsion bar 6, a track beam 7, a longitudinal beam 8, a vertical beam 9, a guide wheel mounting seat 10, a stabilizing wheel mounting seat 11, a central traction pin mounting seat 12, a traveling wheel mounting seat 13, a rubber wheel 14, a wheel hub motor 15, a brake disc 16, a brake clamp 17, a brake caliper 18, a brake cylinder 19, a central traction pin 20, a vehicle body hanger 21, a spring damper 21, a traction pull rod 22, a bolster body 23, a torsion bar support 24, a spring damper mounting seat I25, a spring damper mounting seat II26, a transverse stop 27, a vertical stop 28, a traction pull rod mounting seat I29, a traction pull rod mounting seat II30, a limiting mechanism 31, a point-resistant torsion bar mounting seat I and a point-resistant mounting seat II, wherein the suspension device is arranged on the straight-line-shaped framework 1, the track beam 7, the longitudinal beam 8, the vertical beam, the guide wheel mounting seat.
Detailed Description
The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will be readily apparent to those skilled in the art from the disclosure herein. The present invention can also be implemented or applied through other different specific embodiments, and various details in the present specification can be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention.
A PRT suspension type single-rail vehicle single-axle bogie comprises a linear framework 1 of the bogie, wherein the linear framework 1 comprises a linear longitudinal beam 8 extending longitudinally, vertical beams 9 vertically welded above two ends of the linear longitudinal beam 8, and guide wheel mounting seats 10 transversely welded at two ends of the linear longitudinal beam 8; the top end of the vertical beam 9 is transversely welded with a stabilizing wheel mounting seat 11, the two guide wheels 4 are arranged on a guide wheel mounting seat 10 and are symmetrical along the transverse two sides relative to the straight-line-shaped longitudinal beam 8, the two stabilizing wheels 5 are arranged on the stabilizing wheel mounting seat 11 and are symmetrical along the transverse two sides relative to the straight-line-shaped longitudinal beam 8, the rotating shafts of the stabilizing wheels 5 and the guide wheels 4 on the same side extend along the vertical direction and are overlapped, the longitudinal beam is only provided with a transversely extending walking wheel mounting seat 13, the walking wheel mounting seat 13 is provided with a pair of walking wheels 2, and the whole bogie is only provided with a pair of walking wheels 2, so that the bogie is a single-shaft bogie; the rotating shafts of the pair of running wheels 2 are transversely arranged, the lower part of the longitudinal beam is provided with a central traction pin mounting seat 12, a central traction pin 19 is sleeved on the central traction pin mounting seat 12, and the linear framework and the suspension device 3 are connected through the central traction pin 19.
The traveling wheels 2 are rubber tires and comprise rubber wheels 14 and hub motors 15 which are coaxially arranged, the hub motors 15 are positioned in the rubber wheels 14, and the traveling wheels 2 travel on the track beams 7. The rubber tire 14 adopts a small pneumatic tire, the hub motor 15 directly transmits torque to the rubber tire 14, a gear driving structure is omitted, the driving structure is simplified, the size is reduced, and noise generated in vehicle running is greatly reduced. The single-axle bogie structure is small in size, the two traveling wheels are controlled by different hub motors 15 respectively, and meanwhile, the two traveling wheels are controlled by combining an electric control differential speed to pass through a curve track, so that the bogie has good stability when passing through a small-radius curve.
The vehicle is characterized in that a central traction pin mounting seat 12 is arranged below the linear framework 1, a vertical central traction pin 19 is fixedly connected to the central traction pin mounting seat 12, the bottom of the central traction pin 19 is fixedly connected with a suspension device 3 of the vehicle, a longitudinal anti-nod torsion bar 6 is arranged between the linear framework 1 and the suspension device 3, two anti-nod torsion bar mounting seats II 33 are symmetrically arranged on two sides above the central traction pin mounting seat 12, one anti-nod torsion bar mounting seat I32 is arranged on a beam structure of the vehicle body hanger 20, the beam structure is transversely parallel to each other, one end of the anti-nod torsion bar 6 is hinged to the anti-nod torsion bar mounting seat II 33, and the other end of the anti-nod torsion bar mounting seat I32. The single-axle bogie does not have self-stability, when the bogie generates nodding motion around the rotation axis of the running wheel 2 relative to the suspension device 3 in the running process of a vehicle, reverse motion of two sides of the nodding-resistant torsion bar 6 generates reverse torque, and the stability of the bogie in the running process can be kept.
The suspension device 3 comprises a central traction pin 19, a vehicle body hanger 20, a spring damper 21, a traction pull rod 22 and a swing bolster main body 23; the swing bolster main body 23 is provided with a central hole, and the central traction pin 19 is vertically embedded in the central hole of the swing bolster main body 23; the vehicle body hanger 20 is located above the bolster body 23, and both ends of the spring damper 21 are rotatably connected to the vehicle body hanger 20 and the bolster body 23, respectively.
The vehicle body hanger 20 comprises four beam structures above and four support legs at the bottom, and is fixed on a vehicle body top cover through bolts, the four beam structures surround a rectangle, two of the beam structures which are longitudinally parallel to each other are symmetrically provided with spring shock absorber mounting seats I25, meanwhile, the two beam structures which are longitudinally parallel to each other are symmetrically provided with limiting mechanisms 31, one end of each limiting mechanism 31 is welded on the longitudinal beam structure of the vehicle body hanger 20, and the end surface of the other end of each limiting mechanism is provided with a rectangular steel piece; and the other two beam structures which are transversely parallel to each other are provided with traction pull rod mounting seats I29.
The swing bolster structure comprises a swing bolster main body 23 and transversely extending supports 24 arranged at two ends of the swing bolster main body 23, wherein the tail ends of the supports 24 are provided with spring shock absorber mounting seats II26, the swing bolster main body 23 is provided with two traction pull rod mounting seats II30, and a connecting line of the two traction pull rod mounting seats II30 obliquely passes through a central hole in the swing bolster main body 23; two vertical sides of the bolster main body 23 are symmetrically provided with transverse stoppers 27, a vertical stopper 28 is connected below the transverse stopper 27, and a rectangular steel member on the end surface of the limiting mechanism 31 faces the transverse stopper 27.
One end of the spring damper 21 is rotatably connected to the spring damper mounting seat I25, and the other end of the spring damper is rotatably connected to the spring damper mounting seat II 26.
One end of the traction pull rod 22 is installed on the traction pull rod installation seat I29, and the other end is installed on the traction pull rod installation seat II 30.
A brake disc 16 is installed on a hub motor on the inner side of the walking wheel 2, a brake clamp 17 is installed on the walking wheel installation seat 13, and two brake pads of the brake clamp are located on the side edge of the brake disc 16. When the vehicle brakes, the friction force generated by clamping the brake disc 16 through the brake clamp 17 realizes the braking function.
The guide wheels 4 and the stabilizing wheels 5 are both made of rubber.
When a vehicle passes through a curve line, the rubber wheels 14 have no self-guiding capacity, the guide wheels 4 on the bogie are tightly attached to the track beams 7 on the outer side of the curve line, the track beams 7 provide transverse acting force for the bogie through the guide wheels 4, the centrifugal force of the vehicle passing through the curve line is overcome, the vehicle is helped to pass through the curve, and the guiding function is realized; when a vehicle passes through a curve line, the vehicle body rolls due to inertia force, when the vehicle body rolls to a certain angle, the limiting mechanism 31 on the vehicle body hanger 20 contacts the transverse stop 27, transverse acting force is applied to the transverse stop, torque for enabling the bogie to roll is generated, the track beam 7 acts on the stabilizing wheels 5, reverse torque is generated, the bogie is restrained from rolling, and the running stability of the bogie is kept.
When the vehicle body moves transversely, the transverse stopping block 27 can act with the limiting mechanism 31 to transmit transverse force and restrain the transverse movement of the vehicle body; the vertical stopping block 28 can limit the floating and sinking movement of the vehicle body in the vertical direction, and when the vehicle body moves vertically downwards, the spring shock absorber is in a compressed state, so that the downward movement of the vehicle body has a certain limit, and when the vehicle body moves upwards and reaches a certain height, the vertical stopping block contacts with a vehicle body top cover, so that the vehicle body is limited not to move upwards any more. By means of these suspension units 3, vertical, longitudinal and transverse force transmission is achieved between the car body and the bogie structure.
In conclusion, the PRT suspension type monorail vehicle adopts a single-shaft bogie structure and is matched with a linear framework, so that the size of the bogie is effectively reduced, and the size of a track beam is further reduced. The direct driving mode of the hub motor is adopted, a gear driving structure is omitted, and noise generated in the running process of the vehicle is reduced. The innovative suspension device ensures the running stability of the vehicle, and the single-shaft driving structure shortens the longitudinal distance between the front guide wheel and the rear guide wheel, thereby improving the passing capacity of the bogie on a small-radius curve.
The above embodiments are merely illustrative of the principles and effects of the present invention, and are not to be construed as limiting the invention. Modifications and variations can be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which may be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.
Claims (10)
1. The utility model provides a PRT suspension type monorail vehicle single axle bogie which characterized in that: the bogie comprises a linear framework (1) comprising a bogie, wherein the linear framework (1) comprises a linear longitudinal beam (8) extending longitudinally, vertical beams (9) vertically and fixedly connected above two ends of the linear longitudinal beam (8), and guide wheel mounting seats (10) transversely connected to two ends of the linear longitudinal beam (8); the top end of the vertical beam (9) is transversely provided with a stabilizing wheel mounting seat (11), the two guide wheels (4) are arranged on a guide wheel mounting seat (10) and are symmetrical along the transverse two sides relative to the straight longitudinal beam (8), the two stabilizing wheels (5) are arranged on the stabilizing wheel mounting seat (11) and are symmetrical along the transverse two sides relative to the straight longitudinal beam (8), rotating shafts of the stabilizing wheels (5) and the guide wheels (4) on the same side extend along the vertical direction and are overlapped, the longitudinal beam is only provided with a transversely extending walking wheel mounting seat (13), the walking wheel mounting seat (13) is provided with a pair of walking wheels (2), and the whole bogie is only provided with a pair of walking wheels (2) and is a single-shaft bogie; the rotating shafts of the pair of walking wheels (2) are transversely arranged, the lower part of the longitudinal beam is provided with a central traction pin mounting seat (12), a central traction pin (19) is sleeved on the central traction pin mounting seat (12), and the linear framework and the suspension device (3) are connected through the central traction pin (19).
2. A PRT suspended monorail vehicle single axle bogie in accordance with claim 1, further comprising: the walking wheel (2) is a rubber tire and comprises a rubber wheel (14) and a hub motor (15), the rubber wheel (14) and the hub motor (15) are coaxially arranged, the hub motor (15) is positioned in the rubber wheel (14), and the walking wheel (2) walks on the track beam (7).
3. A PRT suspended monorail vehicle single axle bogie in accordance with claim 1, further comprising: the vehicle anti-nod torsion bar structure is characterized in that a central traction pin mounting seat (12) is arranged below the linear framework (1), a vertical central traction pin (19) is fixedly connected to the central traction pin mounting seat (12), the bottom of the central traction pin (19) is fixedly connected with a suspension device (3) of a vehicle, longitudinally arranged anti-nod torsion bars (6) are arranged between the linear framework (1) and the suspension device (3), the anti-nod torsion bar mounting seats II (33) are symmetrically arranged on two sides above the central traction pin mounting seat (12), the anti-nod torsion bar mounting seats I (32) are arranged on beam structures which are parallel to each other in the transverse direction of a vehicle body hanger (20), one ends of the anti-nod torsion bars (6) are hinged to the anti-nod torsion bar mounting seats II (33), and the other ends of the anti-nod torsion bar mounting seats I (32).
4. A PRT suspended monorail vehicle single axle bogie as defined in claim 3, wherein: the suspension device (3) comprises a central traction pin (19), a vehicle body hanger (20), a spring damper (21), a traction pull rod (22) and a swing bolster main body (23); a central hole is formed in the swing bolster main body (23), and the central traction pin (19) is vertically embedded into the central hole of the swing bolster main body (23); the vehicle body hanger (20) is positioned above the swing bolster main body (23), and two ends of the spring damper (21) are respectively and rotatably connected to the vehicle body hanger (20) and the swing bolster main body (23).
5. A PRT suspended monorail vehicle single axle bogie in accordance with claim 4, characterized in that: the vehicle body hanger (20) comprises four beam structures above and four support legs at the bottom, the four beam structures surround a rectangle, two of the beam structures which are longitudinally parallel to each other are symmetrically provided with spring shock absorber mounting seats I (25), meanwhile, the two beam structures which are longitudinally parallel to each other are symmetrically provided with limiting mechanisms (31), one end of each limiting mechanism (31) is welded on the longitudinal beam structure of the vehicle body hanger (20), and the end surface of the other end of each limiting mechanism is provided with a rectangular steel piece; and traction pull rod mounting seats I (29) are arranged on the other two beam structures which are transversely parallel to each other.
6. A PRT suspended monorail vehicle single axle bogie in accordance with claim 5, characterized in that: the swing bolster structure comprises a swing bolster main body (23) and transversely extending supports (24) arranged at two ends of the swing bolster main body (23), wherein the tail ends of the supports (24) are provided with spring shock absorber mounting seats II (26), the swing bolster main body (23) is provided with two traction pull rod mounting seats II (30), and a connecting line of the two traction pull rod mounting seats II (30) obliquely passes through a central hole in the swing bolster main body (23); two vertical sides of the swing bolster main body (23) are symmetrically provided with transverse stopping blocks (27), a vertical stopping block (28) is connected below the transverse stopping blocks (27), and the rectangular steel part on the end face of the limiting mechanism (31) faces the transverse stopping blocks (27).
7. A PRT suspended monorail vehicle single axle bogie in accordance with claim 6, characterized in that: one end of the spring damper (21) is rotatably connected to the spring damper mounting seat I (25), and the other end of the spring damper is rotatably connected to the spring damper mounting seat II (26).
8. A PRT suspended monorail vehicle single axle bogie in accordance with claim 6, characterized in that: one end of the traction pull rod (22) is installed on the traction pull rod installation seat I (29), and the other end of the traction pull rod is installed on the traction pull rod installation seat II (30).
9. A PRT suspended monorail vehicle single axle bogie as defined in claim 2, wherein: the brake disc (16) is installed on the hub motor on the inner side of the walking wheel (2), the brake clamp (17) is installed on the walking wheel installation seat (13), and the two brake pads of the brake clamp are located on the side edge of the brake disc (16).
10. A PRT suspended monorail vehicle single axle bogie in accordance with claim 1, further comprising: the guide wheels (4) and the stabilizing wheels (5) are made of rubber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021225294.5U CN212709411U (en) | 2020-06-29 | 2020-06-29 | Single-axle bogie of PRT suspension type monorail vehicle |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021225294.5U CN212709411U (en) | 2020-06-29 | 2020-06-29 | Single-axle bogie of PRT suspension type monorail vehicle |
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| CN212709411U true CN212709411U (en) | 2021-03-16 |
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| CN202021225294.5U Active CN212709411U (en) | 2020-06-29 | 2020-06-29 | Single-axle bogie of PRT suspension type monorail vehicle |
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| CN (1) | CN212709411U (en) |
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