CN216969666U

CN216969666U - Bogie and have its rail vehicle

Info

Publication number: CN216969666U
Application number: CN202220722537.9U
Authority: CN
Inventors: 杨怡; 谭志成
Original assignee: BYD Co Ltd
Current assignee: BYD Co Ltd
Priority date: 2022-03-30
Filing date: 2022-03-30
Publication date: 2022-07-15
Anticipated expiration: 2032-03-30

Abstract

The utility model discloses a bogie and a rail vehicle with the same, wherein the bogie comprises a frame body and two groups of walking wheel assemblies, the two groups of walking wheel assemblies are symmetrically arranged on the frame body, and the two groups of walking wheel assemblies respectively comprise: the power assembly is in power connection with the walking wheels, and the two walking wheels are coaxial and arranged at intervals. According to the bogie disclosed by the embodiment of the application, the two walking wheels are symmetrically arranged at intervals, and the two power assemblies are correspondingly connected with the two walking wheels respectively, so that the whole structure of the bogie is symmetrical, the two walking wheels are uniformly stressed and are not prone to eccentric wear, meanwhile, the two power assemblies can respectively control the rotating speeds of the two walking wheels, the steering motion is realized by enabling the two walking wheels to generate a rotating speed difference, and the abrasion generated when the walking wheels pass through a curve can be reduced during steering.

Description

Bogie and have its rail vehicle

Technical Field

The utility model relates to the technical field of railway vehicles, in particular to a bogie and a railway vehicle with the same.

Background

In the prior art, bogies are used to support and run a vehicle body on a track. In the prior art, a bogie is driven by a single traction motor. However, the bogie driven by the single traction motor is in an asymmetric structure, so that tires of the traveling wheels on two sides, meshed with the track, of the bogie are stressed unevenly, eccentric wear is easy to occur, meanwhile, the tires on two sides are identical in rotation speed due to the driving mode of the single traction motor, and the tires on the traveling wheels on two sides are relatively large in over-bending wear when the bogie turns.

SUMMERY OF THE UTILITY MODEL

The present invention is directed to solving at least one of the problems of the prior art. Therefore, the utility model provides the bogie, the walking wheel assemblies of the bogie are symmetrically arranged, the two walking wheels are uniformly stressed, eccentric wear is not easy to occur, and the over-bending wear of the walking wheels is small.

The utility model also aims to provide a railway vehicle with the bogie.

According to this application first aspect embodiment's bogie, including support body and walking wheel subassembly, walk the wheel subassembly and be two sets of and the symmetry setting on the support body, two sets of walking wheel subassemblies all include: the power assembly is in power connection with the walking wheels, and the two walking wheels are coaxial and arranged at intervals.

According to the bogie disclosed by the embodiment of the application, the two walking wheels are symmetrically arranged at intervals, and the two power assemblies are correspondingly connected with the two walking wheels respectively, so that the whole structure of the bogie is symmetrical, the two walking wheels are uniformly stressed and are not prone to eccentric wear, meanwhile, the two power assemblies can respectively control the rotating speeds of the two walking wheels, the steering motion is realized by enabling the two walking wheels to generate a rotating speed difference, and the abrasion generated when the walking wheels pass through a curve can be reduced during steering.

According to some embodiments of the application, a powertrain includes: the frame body is provided with a power assembly seat, and the driving motor is fixed on the power assembly seat.

In some embodiments, the rack further comprises: the first support body and the second support body are detachably arranged on the front side and the rear side of the power assembly seat, the mounting space is limited by the first support body, the second support body and the power assembly seat, the walking wheel assembly is arranged in the mounting space, and the first support body and the second support body are symmetrical relative to the axis of the walking wheel.

Furthermore, the left end and the right end of the first frame body and the second frame body are respectively provided with a guide wheel fixing frame, and guide wheels are arranged on the guide wheel fixing frames

In some embodiments, the rack further comprises: the third support body is detachably arranged on the outer side of the power assembly seat, one end of the third support body is connected with the power assembly seat, the other end of the third support body extends downwards and is provided with a stabilizing wheel mounting support, and stabilizing wheels are arranged on the stabilizing wheel mounting support.

Furthermore, one end of the third frame body is provided with a fixing groove, and the fixing groove is communicated with the mounting groove of the power assembly seat to accommodate the driving motor.

Furthermore, a fixing arm is further arranged on the outer side face of the third frame body and used for fixing the damping assembly.

In some embodiments, a shock absorbing assembly comprises: the air spring is arranged on the fixed arm, the air chamber is communicated with the air spring, and the shock absorber is connected with the air chamber at one end and the fixed arm at the other end.

In some embodiments, further comprising: and the brake is arranged on the speed reducer shell of the speed reducer.

The railway vehicle of the second aspect of the present application comprises the bogie in the above embodiments.

Additional aspects and advantages of the utility model will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the utility model.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

FIG. 1 is a front view of a truck according to an embodiment of the present application;

FIG. 2 is a schematic perspective view of a bogie according to an embodiment of the present application;

FIG. 3 is a schematic perspective view of a bogie of an embodiment of the present application without running wheels;

FIG. 4 is a schematic structural diagram of a frame body in a bogie according to an embodiment of the present application;

FIG. 5 is a schematic structural view illustrating a bogie according to an embodiment of the present invention without a third frame mounted on the frame;

fig. 6 is a schematic structural diagram of a first frame body and a second frame body in a bogie according to an embodiment of the present application;

FIG. 7 is a schematic structural view illustrating a coupling between a powertrain mount and a third frame body in a bogie according to an embodiment of the present disclosure;

fig. 8 is a schematic structural diagram of a third frame body in a bogie according to an embodiment of the present application.

Reference numerals:

the length of the bogie 100 is such that,

the number of the frame bodies 10 is increased,

a power assembly base 11, a mounting groove 111, a first frame body 12, a second frame body 13, a third frame body 14, a fixing groove 141, a stabilizing wheel mounting bracket 142, a stabilizing groove 1421, a third through hole 1422, a stabilizing wheel 143, a stabilizing connecting block 144, a stabilizing protrusion 1441, a fourth through hole 1442, a stabilizing connecting piece 145, a fixing arm 146, a guide wheel fixing frame 15, a guide groove 151, a first through hole 152, a guide wheel 16, a guide connecting block 17, a guide protrusion 171, a second through hole 172, a guide connecting piece 18,

the running wheel assemblies 20 are provided with,

running wheels 21, a power assembly 22, a driving motor 221, a speed reducer 222, a speed reducer shell 2221, a brake 223,

the shock-absorbing assembly 30 is provided with,

air spring 31, air chamber 32, transverse stop 321, and shock absorber 33.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be taken as limiting the present invention. Furthermore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The structure of the bogie 100 of the embodiment of the present application is described below with reference to fig. 1 to 8.

Referring to fig. 1 to 2, a bogie 100 provided by the embodiment of the present application includes a frame body 10 and two sets of running wheel assemblies 20, where the two sets of running wheel assemblies 20 are symmetrically disposed on the frame body 10, and each of the two sets of running wheel assemblies 20 includes: the device comprises walking wheels 21 and a power assembly 22 in power connection with the walking wheels 21, wherein the two walking wheels 21 are coaxial and are arranged at intervals.

In particular, the bogie 100 is used to drive a rail vehicle, the running wheels 21 are engaged with the rail and adapted to roll on the rail to propel the rail vehicle, and in some embodiments the two running wheel assemblies 20 may be positioned adjacent to each other (i.e. within the frame 10) to match a single track, and in other embodiments the two running wheel assemblies 20 may be positioned on both sides of the frame 10 to match a double track.

It should be noted that the two running wheels 21 are driven by the respective corresponding power assemblies 22, the two running wheels 21 can realize a straight line form when the rotating speeds of the two running wheels 21 are the same, and the vehicle can turn towards the side with the lower rotating speed of the running wheels 21 when the rotating speeds of the two running wheels 21 are different, so as to realize turning by changing the rotating speed of the running wheels 21, on one hand, the rotating speeds of the two running wheels 21 are different during turning, so that the overbending abrasion of the running wheels 21 at the turning side can be reduced; on the other hand, the two running wheel assemblies 20 are symmetrically arranged, the load distribution of the bogie 100 is uniform, the stress is uniform, the running wheels 21 can be prevented from being biased, and the eccentric wear can be reduced.

According to the bogie 100 of the embodiment of the application, the two walking wheels 21 are symmetrically arranged at intervals, and the two power assemblies 22 are correspondingly connected with the two walking wheels 21 respectively, so that the whole structure of the bogie 100 is symmetrical, the two walking wheels 21 are stressed uniformly, eccentric wear is not easy to occur, meanwhile, the two power assemblies 22 can control the rotating speeds of the two walking wheels 21 respectively, steering movement is realized by enabling the two walking wheels 21 to generate a rotating speed difference, and abrasion generated when the walking wheels 21 pass through a curve can be reduced during steering.

Specifically, the bogie 100 of the embodiment of the present application includes a frame body 10, the frame body 10 is located above the track, two sets of walking wheel assemblies 20 are symmetrically disposed on the frame body 10, and two walking wheels 21 are disposed coaxially and at an interval, so that the rotation speeds of the two walking wheels 21 are not affected by each other, and since the two walking wheels 21 are connected to a power assembly 22, the rotation speeds of the two walking wheels 21 may be the same or different.

That is, when the bogie 100 runs straight, the two power assemblies 22 can output the same rotating speed and torque, so that the rotating speeds of the two routing wheels are the same, and the normal running of the bogie 100 along the straight line is ensured; when the bogie 100 passes through a curve, the two power assemblies 22 can control the two traveling wheels 21 to generate speed difference by outputting different rotating speeds and torques, so that the steering movement is completed, meanwhile, the abrasion generated when the two traveling wheels 21 pass through the curve can be reduced, and the service life of the traveling wheels 21 is prolonged.

In some embodiments of the present application, referring to FIG. 3, a powertrain 22 includes: the frame body 10 is provided with a power assembly base 11, and the driving motor 221 is fixed on the power assembly base 11. In this way, the driving motor 221 can reduce the rotation speed and increase the torque through the speed reducer 222 to transmit the driving force to the traveling wheels 21, and the driving motor 221 is fixedly connected with the frame body 10 through the power assembly base 11.

Of course, the present disclosure is not limited thereto, and for example, the driving motor 221 may be directly fixedly connected to the frame 10.

In some embodiments of the present application, referring to fig. 3-5, the magazine 10 further comprises: the first support body 12 and the second support body 13 detachably arranged on the front side and the rear side of the power assembly seat 11, an installation space is limited by the first support body 12, the second support body 13 and the power assembly seat 11, the walking wheel assembly 20 is arranged in the installation space, and the first support body 12 and the second support body 13 are symmetrical relative to the axis of the walking wheel 21.

From this, through the support body that can dismantle first support body 12 and the second support body 13 of connection and constitute, processing production is convenient, and the maintenance convenience is higher.

Specifically, the first frame body 12 and the second frame body 13 are detachably connected with the powertrain seat 11 by bolts and nuts, snap connections, and the like.

In some embodiments of the present application, referring to fig. 5 to 6, guide wheel holders 15 are disposed on both left and right ends of the first and

second frame bodies

12 and 13, and guide wheels 16 are disposed on the guide wheel holders 15.

The guide wheels 16 on the two sides respectively clamp the guide surfaces on the two sides of the track from the two sides, the auxiliary bogie 100 finishes steering movement, when the bogie 100 passes through a curve, the steering movement is finished by controlling the two walking wheels 21 to generate speed difference, the stress of the guide wheels 16 can be reduced, the abrasion of the guide wheels 16 is reduced, the complicated structure of the guide wheels 16 is not required to be arranged to reduce the abrasion, and the structure of the guide wheels 16 is simplified.

It should be noted that, in the prior art, the two running wheels 21 have the same rotation speed, and during turning, the guide wheels 16 act on the guide surface of the rail for guiding, and the guide wheels 16 need to be provided with a buffer structure to bear and buffer the pressure provided by the rail, whereas the guide wheels 16 of the present application only play a role in assisting steering, and the rotation speeds of the two running wheels 21 are different, so that the stress on the inner side of the turning can be significantly reduced, so as to effectively reduce the stress on the guide wheels 16 on the inner side of the turning.

It can be understood that, leading wheel mount 15 and first support body 12 and second support body 13 can be fixed connection, also can dismantle the connection, and in order to improve connection stability, leading wheel mount 15 is in the same place with first support body 12 and second support body 13 fixed connection in the present application scheme.

It can be understood that the guide wheel 16 and the guide wheel holder 15 can be fixedly connected or detachably connected, and in order to facilitate the installation and the detachment of the guide wheel 16, the guide wheel 16 and the guide wheel holder 15 are detachably connected together in the present embodiment.

Specifically, be equipped with the direction recess 151 along the horizontal direction on leading wheel mount 15, and the opening direction of direction recess 151 is towards the power assembly seat 11 outside, direction recess 151 both sides are equipped with first through-hole 152, be connected with direction connecting block 17 in the direction pivot of leading wheel 16, be equipped with on the direction connecting block 17 with direction recess 151 matched with direction arch 171, direction arch 171 both sides are equipped with first through-hole 152 matched with second through-hole 172, direction arch 171 stretches into in the direction recess 151, direction connecting piece 18 passes first through-hole 152 and second through-hole 172, link together leading wheel 16 with leading wheel mount 15.

In some embodiments of the present application, referring to fig. 5, the magazine 10 further includes: the third frame body 14 is detachably arranged on the outer side of the power assembly base 11, one end of the third frame body 14 is connected with the power assembly base 11, the other end of the third frame body 14 extends downwards and is provided with a stabilizing wheel mounting bracket 142, and the stabilizing wheel mounting bracket 142 is provided with a stabilizing wheel 143. The third frame 14 is detachably connected to the power assembly base 11, so that the third frame 14 can be conveniently manufactured and maintained, and the stabilizing wheels 143 are used for improving the motion stability of the bogie 100.

It should be noted that, enclose first support body 12, second support body 13 and powertrain seat 11 in this application scheme and establish the installation space of installation walking wheel, and the definition installation space is interior, and is inwards towards the installation space, and the installation space is outer for the definition, keeps away from the installation space definition and outwards, and corresponding third support body 14 sets up in the powertrain seat 11 outside, is located outside the installation space who encloses promptly.

It can be understood that the stabilizer wheel mounting bracket 142 and the third frame 14 may be fixedly connected or detachably connected, and in order to improve the connection stability, the stabilizer wheel mounting bracket 142 and the third frame 14 are fixedly connected together in this embodiment.

It can be appreciated that the stabilizing wheel 143 can be fixedly attached to the stabilizing wheel mounting bracket 142 or can be removably attached to the stabilizing wheel mounting bracket 142, and for ease of mounting and dismounting the stabilizing wheel 143, the stabilizing wheel 143 can be removably attached to the stabilizing wheel mounting bracket 142 in this embodiment.

Specifically, stabilizing wheel installing support 142 is provided with stabilizing groove 1421 along the horizontal direction, and the opening direction of stabilizing groove 1421 faces the inside of powertrain mount 11, stabilizing groove 1421 both sides are provided with third through hole 1422, stabilizing wheel 143 is connected with stabilizing connecting block 144 in the stable pivot, stabilizing connecting block 144 is provided with stabilizing protrusion 1441 matched with stabilizing groove 1421, stabilizing protrusion 1441 both sides are provided with fourth through hole 1442 matched with third through hole 1422, stabilizing protrusion 1441 stretches into stabilizing groove 1421, stabilizing connecting piece 145 passes third through hole 1422 and fourth through hole 1442, connect stabilizing wheel 143 and stabilizing wheel installing support 142 together.

In some embodiments of the present application, referring to fig. 7 and 8, a fixing groove 141 is formed at one end of the third frame 14, and the fixing groove 141 is communicated with the mounting groove 111 of the power assembly base 11 to accommodate the driving motor 221. By the arrangement, the driving motor 221 is arranged in the accommodating space defined by the fixing groove 141 and the mounting groove 111, so that the driving motor 221 can be protected, and unsafe accidents caused by collision of the driving motor 221 are avoided.

Specifically, one side of the fixing groove 141 connected to the mounting groove 111 is open (i.e., the inner side is open), and a fixing connection hole is formed in the side end surface, a mounting connection hole matched with the fixing connection hole is formed in the end surface of the mounting groove 111 connected to the fixing groove 141, and the connecting member passes through the fixing connection hole and the mounting connection hole to connect the fixing groove 141 and the mounting groove 111 together to define an accommodating space having the same contour as the outer shape of the motor casing of the driving motor 221.

Further, a motor through hole penetrating through the accommodating space is formed in the power assembly base 11, and an output shaft of the driving motor 221 penetrates through the motor through hole to be in power connection with the transmission.

In some embodiments of the present application, a fixing arm 146 is further disposed on an outer side surface of the third frame body 14, and the fixing arm 146 is used for fixing the shock-absorbing assembly 30. The damping assembly 30 is connected with the third frame body 14 through the fixing arm 146, so that the reliability and stability of connection between the damping assembly 30 and the third frame body 14 are improved, and the mounting and the dismounting are convenient.

In some embodiments, referring to fig. 1-3, a shock absorbing assembly 30 includes: an air spring 31 provided on the fixing arm 146, an air chamber 32 communicating with the air spring 31, and a damper 33 having one end connected to the air chamber 32 and the other end connected to the fixing arm 146. The air spring 31, the air chamber 32 and the shock absorber 33 are matched for shock absorption, so that the shock absorption capacity and the shock absorption precision are improved, and the service life is long.

Specifically, referring to fig. 1, a lateral stop 321 is disposed on a side of the air chamber 32 close to the third frame 14, a gap is left between the lateral stop 321 and the third frame 14, and the lateral stop 321 is used for preventing the air chamber 32 from colliding with the third frame 14.

In some embodiments, referring to fig. 1-3, the bogie 100 further comprises: the brake 223 is provided on the reduction gear case 222 of the reduction gear 222. The provision of the brake 223 makes it possible to stabilize the speed of the running wheels 21 on both sides of the bogie 100 during cornering and to keep the bogie 100 stationary during stopping, improving the stability of the bogie 100.

It should be pointed out that, in the present application, the frame body 10 is configured as a split structure, the power assembly base 11, the first frame body 12, the second frame body 13 and the third frame body 14 are assembled into a complete frame body 10, a plurality of split structures are separately processed, each split structure can be correspondingly formed into a module, and through the modular arrangement, on one hand, the processing difficulty (for example, the die opening difficulty) can be reduced, the processing efficiency is improved, and the processing cost is reduced; on the other hand, after the frame body 10 breaks down, the broken-down split structure can be replaced independently, so that the maintainability can be improved, and the maintenance cost can be reduced.

In the description herein, references to the description of the terms "embodiment," "example," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the utility model have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the utility model, the scope of which is defined by the claims and their equivalents.

Claims

1. A bogie, comprising:

a frame body;

the walking wheel assemblies are two groups and are symmetrically arranged on the frame body, and the walking wheel assemblies comprise: the walking mechanism comprises walking wheels and a power assembly in power connection with the walking wheels, wherein the two walking wheels are coaxial and are arranged at intervals.

2. The bogie of claim 1, wherein the powertrain comprises: the support body is provided with a power assembly seat, and the driving motor is fixed on the power assembly seat.

3. The bogie of claim 2, wherein the frame body further comprises: detachably sets up first support body and the second support body of both sides around the power assembly seat, first support body the second support body and power assembly seat prescribes a limit to installation space, it sets up to walk the running wheel subassembly in the installation space, just first support body with the second support body is relative walk the axis symmetry of taking turns.

4. The bogie according to claim 3, wherein guide wheel fixing frames are arranged at the left end and the right end of the first frame body and the second frame body, and guide wheels are arranged on the guide wheel fixing frames.

5. The truck of claim 2 wherein the frame body further comprises: detachably sets up the third support body in the power assembly seat outside, the one end of third support body with the power assembly seat is connected, the other end downwardly extending of third support body is provided with the stabilizer wheel installing support, be provided with the stabilizer wheel on the stabilizer wheel installing support.

6. The bogie of claim 5, wherein the one end of the third frame body is provided with a fixing groove, and the fixing groove is communicated with the mounting groove of the powertrain mount to receive the driving motor.

7. The bogie according to claim 5, wherein a fixing arm is further provided on an outer side surface of the third frame body, and the fixing arm is used for fixing the damping assembly.

8. The truck of claim 7, wherein the shock assembly comprises: the shock absorber is arranged on the fixed arm, the air spring is arranged on the fixed arm, the air chamber is communicated with the air spring, one end of the shock absorber is connected with the air chamber, and the other end of the shock absorber is connected with the fixed arm.

9. The bogie of claim 2, further comprising: a brake provided on a reducer case of the reducer.

10. A rail vehicle, comprising: a bogie as claimed in any one of claims 1 to 9.