CN214215798U - Low-floor bogie - Google Patents
Low-floor bogie Download PDFInfo
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- CN214215798U CN214215798U CN202022447275.3U CN202022447275U CN214215798U CN 214215798 U CN214215798 U CN 214215798U CN 202022447275 U CN202022447275 U CN 202022447275U CN 214215798 U CN214215798 U CN 214215798U
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- disc structure
- bogie
- wheel axle
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- wheel
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Abstract
The utility model discloses a low floor bogie, which comprises a bogie body and wheel axle devices, wherein the wheel axle devices are 2 sets, and the 2 sets of wheel axle devices are respectively arranged below the front end and the rear end of the bogie body in the vehicle walking direction; the center disc structure comprises a first disc structure and a second disc structure, the first disc structure is connected with the steering frame body, and the second disc structure is arranged in a low floor area in the middle of the axle body of the wheel axle bridge device and is connected with the wheel axle bridge device; the second disc structure is positioned below the first disc structure and can rotate relative to the first disc structure; and the two ends of the rotary actuator are respectively connected with the steering frame body and the wheel axle device. The utility model discloses can reduce the attack angle between wheel rim and the track outer rail when passing through the curve, reduce the wearing and tearing volume and the wheel rail noise of wheel rim.
Description
Technical Field
The utility model relates to a low-floor tram bogie technical field, especially a low-floor bogie.
Background
When a traditional rail transit vehicle passes through a horizontal curve rail, the wheel rim is in contact with the rail to guide the vehicle to run along the rail, but an attack angle exists between the wheel rim and an outer rail of the rail, so that the noise of the wheel rail is large, the abrasion of the wheel rim is large when the vehicle runs on a line with more curves, and the service life of the wheel is influenced. Particularly, the running lines of the low-floor tramcar are mostly paved on the outdoor ground, the curve radius is small, and the problems of wheel rail noise and wheel rim abrasion are prominent.
In view of the fact that wheel rim abrasion is large when a tramcar adopting a conventional low-floor bogie runs on a line with a large curve, a bogie with an adjustable attack angle between a wheel rim and an outer rail of a rail is needed to reduce the attack angle between the wheel rim and the outer rail of the rail when the tramcar passes through the curve, so that wheel rim abrasion and wheel rail noise of the tramcar when the tramcar runs on the line with the large curve are reduced.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that, not enough to prior art provides a low-floor bogie, and this low-floor bogie is when passing through the more circuit of curve, and the attack angle between rim and the track outer rail is adjustable, has reduced the wearing and tearing volume and the wheel rail noise of wheel rim.
In order to solve the technical problem, the utility model discloses the technical scheme who adopts is:
a low floor bogie comprises a bogie body and wheel axle bridge devices, wherein the wheel axle bridge devices are 2 in number, and the 2 wheel axle bridge devices are respectively arranged below the front end and the rear end of the bogie body in the vehicle traveling direction;
the center disc structure comprises a first disc structure and a second disc structure, the first disc structure is connected with the steering frame body, and the second disc structure is arranged in a low floor area in the middle of the axle body of the wheel axle bridge device and is connected with the wheel axle bridge device;
the second disc structure is positioned below the first disc structure and can rotate relative to the first disc structure;
and the two ends of the rotary actuator are respectively connected with the steering frame body and the wheel axle device.
The second disc structure can rotate relative to the first disc structure, namely the wheel axle bridge device can rotate relative to the center disc structure in the horizontal plane, and meanwhile, the first disc structure is fixedly connected with the steering frame body, so that the rotation of the first disc structure relative to the steering frame body in the horizontal plane is limited. The turning actuator is arranged between the bogie body and the wheel axle bridge device, when the bogie passes through a curve track, the turning actuator is actively controlled to extend or contract, so that the wheel axle bridge device rotates around a vertical axis (the running direction of a vehicle), and an attack angle between a wheel rim and an outer rail of the track when the bogie passes through the curve is reduced.
Further, the first disc structure and the second disc structure are connected through the rotating part. The axle-axle device can rotate relative to the center plate in the horizontal plane by installing the center plate structure between the steering frame body and the axle-axle device and adopting the connection of a rotary part.
Further, the rotating part is a bearing, the first disc structure is a rotating bearing mounting base, and the second disc structure is a rotating bearing mounting base.
Furthermore, first disc structure with turn to and be connected through the slide bearing between the support body, first disc structure is close to turn to the both ends of support body and be equipped with first slide bearing mount pad, turn to on the support body with the junction of first disc structure is equipped with the second slide bearing mount pad. The first disc structures are fixed through the sliding bearings at the two ends, the rotation of the first disc structures relative to the steering frame body in the horizontal plane is limited, but the vertical motion of the first disc structures is not influenced, so that the vertical motion between the steering frame body and the core plate structure during the axle load change and vibration is adapted.
Furthermore, the first disc structure is close to two ends of the bogie body and is connected with the bogie body through a bushing. The first disc structures are connected and fixed through the bushings at two ends, so that the rotation of the first disc structures relative to the steering frame body in the horizontal plane is limited, but the vertical motion of the first disc structures is not influenced, and the vertical motion between the steering frame body and the core plate structure is adapted to the change of the axle load and the vibration.
Furthermore, turn to and be equipped with first connecting portion on the support body, be located the regional second disc structure in low floor in the middle of the axle body of wheel axle device is equipped with second connecting portion, rotary actuator's both ends respectively with first connecting portion and second connecting portion are connected.
Furthermore, be equipped with first connecting portion on the steering frame body, the axle head of wheel axle device is equipped with the second connecting portion, rotary actuator's both ends respectively with first connecting portion and second connecting portion are connected.
Further, the rotary actuator is a double-acting hydraulic cylinder.
Furthermore, 2 sets of wheel axle bridge devices are respectively connected below the front end and the rear end of the steering frame body in the vehicle traveling direction through elastic connecting pieces.
Compared with the prior art, the utility model discloses the beneficial effect who has is:
the utility model discloses a turn to support body and wheel axle bridge device and between set up heart dish structure, but the second disc structure of heart dish structure lower part adopts rotatable parts hookups such as bearing with wheel axle bridge device, makes wheel axle bridge device can be rotatory at the relative heart dish structure in the horizontal plane. The first disc structure on the upper part of the core disc structure is connected with the bogie body through a sliding bearing or a bushing so as to limit the rotation of the first disc structure relative to the bogie body in a horizontal plane. Be provided with rotary actuator between bogie body and the wheel axle bridge device of independent rotation, when low floor bogie passes through the curve track, rotary actuator extension or shrink, the second disc structure that drives rather than being connected is rotatory for first disc structure, wheel axle bridge device is rotatory around vertical axis (vehicle walking direction) promptly, thereby reduce the angle of attack between wheel rim and the track outer rail when passing through the curve, and then reduce wheel rail noise and wheel rim wearing and tearing when the vehicle passes through the curve.
Drawings
In order to illustrate the technical solutions of the embodiments of the present invention more clearly, the drawings of the embodiments will be briefly described below, and it should be apparent that the drawings in the following description only relate to some embodiments of the present invention and are not intended to limit the present invention.
Fig. 1 is a schematic structural view of a low floor bogie according to the present invention.
Fig. 2 is an exploded view of 1/4 of the first embodiment of the present invention.
Fig. 3 is an exploded view of 1/4 of a second embodiment of the present invention.
Fig. 4 is a schematic diagram of the comparison between the conventional low-floor vehicle bogie and the wheel-rail attack angle α of the low-floor bogie of the present invention when the low-floor bogie passes through a curve, wherein fig. 4(a) is a schematic diagram of the structure of the conventional low-floor vehicle bogie, and fig. 4(b) is a schematic diagram of the structure of the low-floor bogie of the present invention.
Reference numerals:
1-bogie body; 2-wheel axle arrangement; 3-a core disk structure; 4-a rotary actuator; 5-a first sliding bearing mount; 6-a second plain bearing mount; 7-a first connection; 8-a second connection; 9-elastic connecting piece.
31-a first disc structure; 32-a second disc structure;
101-a track; 102-a wheel; 103-conventional bogie; 104-low floor truck.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the drawings of the embodiments. It is to be understood that the embodiments described are only some of the embodiments of the present invention, and not all of them. All other embodiments, which can be obtained by a person skilled in the art without any inventive work based on the described embodiments of the present invention, belong to the protection scope of the present invention. It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict.
Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by those of ordinary skill in the art to which the invention belongs. The use of "first," "second," and similar terms in the description herein do not denote any order, quantity, or importance, but rather the terms are used to distinguish one element from another. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships may also be changed accordingly.
At least one embodiment of the utility model provides a low floor bogie, as shown in fig. 1, including bogie body 1, wheel axle bridge device 2, 2 sets of wheel axle bridge device 2 are established respectively in bogie body 1 under the front end of vehicle walking direction and the rear end below, its structural feature is, still include heart dish structure 3, rotary actuator 4; the center plate structure 3 comprises a first disc structure 31 and a second disc structure 32, the first disc structure 31 is connected with the bogie body 1, and the second disc structure 32 is arranged in a low floor area in the middle of the axle body of the wheel axle device 2 and is connected with the wheel axle device 2; the second disc structure 32 is located below the first disc structure 31 and can rotate relative to the first disc structure 31; and the two ends of the rotary actuator 4 are respectively connected with the bogie body 1 and the wheel axle device 2.
Referring to fig. 2 and 3, the first disc structure 31 and the second disc structure 32 are connected by the rotating member 33. The rotating member 33 is preferably a bearing, the first disc structure 31 is a rotating bearing mount, and the second disc structure 32 is a rotating bearing mount.
Further, first disc structure 31 with turn to and be connected through the slide bearing between the support body 1, first disc structure 31 is close to turn to the both ends of support body 1 and be equipped with first slide bearing mount pad 5, turn to on the support body 1 with the junction of first disc structure 31 is equipped with second slide bearing mount pad 6.
Further, the two ends of the first disc structure 31 close to the bogie body 1 are connected with the bogie body 1 through bushings.
The center plate structure 3 is arranged between the steering frame body 1 and the wheel axle bridge device 2, and the second disc structure 32 at the lower part of the center plate structure 3 is connected with the wheel axle bridge device 2 through rotatable parts such as bearings, so that the wheel axle bridge device 2 can rotate relative to the center plate structure 3 in the horizontal plane. The first disc structure 31 at the upper part of the core structure 3 is connected with the bogie body 1 through a sliding bearing or a bushing so as to limit the rotation of the first disc structure 31 relative to the bogie body 1 in the horizontal plane. Be provided with rotary actuator 4 between bogie body 1 and the wheel axle bridge device 2 of independent rotation, when low floor bogie passes through the curve track, rotary actuator 4 extension or shrink, it is rotatory for first disc structure 31 to drive the second disc structure 32 of being connected with it, wheel axle bridge device 2 is rotatory around vertical axis (vehicle walking direction) promptly, thereby reduce the angle of attack between wheel rim and the track outer rail when passing through the curve, and then reduce wheel rail noise and wheel rim wearing and tearing when the vehicle passes through the curve.
As shown in fig. 2 of a first embodiment, a first connecting portion 7 is provided on the bogie body 1, a second connecting portion 8 is provided on the second disc structure 32 located in the low floor area in the middle of the axle body of the wheel axle bridge device 2, and two ends of the rotary actuator 4 are respectively connected to the first connecting portion 7 and the second connecting portion 8.
As shown in fig. 3 of a second embodiment, a first connecting portion 7 is provided on the bogie body 1, a second connecting portion 8 is provided at the axle end of the wheel axle device 2, and two ends of the rotary actuator 4 are respectively connected to the first connecting portion 7 and the second connecting portion 8.
Further, the rotary actuator 4 is a double-acting hydraulic cylinder.
Furthermore, 2 sets of wheel axle devices 2 are respectively connected below the front end and the rear end of the bogie body 1 in the vehicle traveling direction through elastic connecting pieces 9.
Fig. 4 is traditional low-floor vehicle bogie with the utility model discloses a wheel rail angle of attack alpha contrast schematic diagram when low-floor bogie passes through the curve, as shown in fig. 4, the utility model discloses a low-floor bogie can be rotatory around vertical axis to reduce the angle of attack alpha between wheel 102 rim and the track 101 outer rail, and then reduced wheel rail noise and wheel rim wearing and tearing when the vehicle passes through the curve.
The above-mentioned embodiments are illustrative and should not be construed as limiting the scope of the invention, which is defined by the appended claims, and all modifications of the equivalent forms of the present invention which are obvious to those skilled in the art after reading the present invention.
Claims (9)
1. A low-floor bogie comprises a bogie body (1) and wheel axle bridge devices (2), wherein 2 sets of the wheel axle bridge devices (2) are arranged, and the 2 sets of the wheel axle bridge devices (2) are respectively arranged below the front end and the rear end of the bogie body (1) in the vehicle walking direction;
the center disc structure (3) comprises a first disc structure (31) and a second disc structure (32), the first disc structure (31) is connected with the steering frame body (1), and the second disc structure (32) is arranged in a low-floor area in the middle of the axle body of the wheel axle device (2) and is connected with the wheel axle device (2);
the second disc structure (32) is positioned below the first disc structure (31) and can rotate relative to the first disc structure (31);
the two ends of the rotary actuator (4) are respectively connected with the steering frame body (1) and the wheel axle device (2).
2. Low floor truck according to claim 1, characterized in that the first disc structure (31) and the second disc structure (32) are connected by a swivel member (33).
3. A low floor truck according to claim 2, characterized in that the swivel part (33) is a bearing, the first disc structure (31) is a swivel bearing mount and the second disc structure (32) is a swivel bearing mount.
4. The low floor bogie according to claim 1, characterized in that the first disc structure (31) is connected with the bogie body (1) through a sliding bearing, the first disc structure (31) is provided with a first sliding bearing mounting seat (5) near the two ends of the bogie body (1), and the bogie body (1) is provided with a second sliding bearing mounting seat (6) at the joint of the first disc structure (31).
5. Low floor truck according to claim 1, characterized in that the first disc structure (31) is bushing connected to the truck body (1) near both ends of the truck body (1).
6. The low floor bogie according to claim 1, characterized in that a first connecting part (7) is provided on the bogie body (1), a second connecting part (8) is provided on the second disc structure (32) located in the low floor region in the middle of the axle body of the wheel axle bridge device (2), and both ends of the rotary actuator (4) are connected with the first connecting part (7) and the second connecting part (8), respectively.
7. The low floor bogie according to claim 1, characterized in that a first connecting part (7) is provided on the bogie body (1), a second connecting part (8) is provided at the axle end of the wheel axle bridge device (2), and both ends of the rotary actuator (4) are connected with the first connecting part (7) and the second connecting part (8), respectively.
8. A low floor truck according to claim 1, characterized in that the swivel actuator (4) is a double acting hydraulic cylinder.
9. A low-floor bogie according to claim 1, characterized in that 2 sets of said wheel axle units (2) are connected to said bogie body (1) below the front end and below the rear end in the direction of vehicle travel, respectively, by means of elastic connections (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022447275.3U CN214215798U (en) | 2020-10-29 | 2020-10-29 | Low-floor bogie |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022447275.3U CN214215798U (en) | 2020-10-29 | 2020-10-29 | Low-floor bogie |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214215798U true CN214215798U (en) | 2021-09-17 |
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ID=77695636
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022447275.3U Active CN214215798U (en) | 2020-10-29 | 2020-10-29 | Low-floor bogie |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214215798U (en) |
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2020
- 2020-10-29 CN CN202022447275.3U patent/CN214215798U/en active Active
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