CN104943707B - Straddle-type monorail train and its bogie - Google Patents

Abstract

The invention discloses a straddle-type monorail train and its bogie. The bogie includes a frame, a running system is installed in the middle of the frame, and a driving device for driving the running system is installed on the frame. The driving device includes a gear box and a traction motor; the gear box and the traction motor are longitudinally arranged on both sides of the bogie, the input shaft of the gear box is longitudinally connected to the traction motor, and the gear box A bevel gear is provided so that its output shaft can be connected horizontally and drive the running system longitudinally, thus meeting the requirements of a straddle-type monorail train.

Description

Straddle monorail train and its bogie

technical field

The invention relates to the technical field of rail vehicles, in particular to a straddle monorail train and its bogie.

Background technique

With the rapid development of cities, the problem of traffic congestion is becoming more and more serious. Existing public transportation systems such as subways and buses cannot completely solve the current urban traffic congestion problem, and urban space is not fully utilized. In addition, the existing public transport team has a serious impact on the environment. For example, the construction and operation of the subway will cause noise pollution, water pollution, etc., and the construction period is long. At the same time, the public transportation system will produce a large amount of greenhouse gases, reducing the air quality of the city.

The straddle-type monorail can solve the shortcomings of the public transportation system mentioned above. The straddle-type monorail transit is a full-line elevated rail transit system, which can use the space above the ordinary road, so it can effectively alleviate the problem of traffic congestion. At the same time, due to the use of rubber tires and special bogies, monorail trains are highly adaptable to steep slopes and sharp bends, and have no strict requirements on terrain. In addition, since the monorail train system adopts electric traction, there is no exhaust pollution during train operation, which is conducive to protecting the urban environment. Therefore, monorail trains have the advantages of effective use of urban space, safe operation, strong ability to adapt to terrain, superior environmental utility, fast speed, and simple construction.

The general track train bogie driving device mainly includes a traction motor and a gearbox. The main function of the driving device is to effectively transmit the power output by the motor to the running system, and finally generate the adhesion between the wheels and rails to drive the train to move along the rails.

At present, the running system of the traditional rail train bogie is set on both sides of the bogie, and the driving device of the bogie is arranged horizontally, while the running system of the straddle-type monorail train is set in the middle of the bogie. The horizontal space occupied by the running system Larger, occupying the lateral position of the driving device, therefore, the driving device of the traditional rail train cannot meet the requirements of the straddle-type monorail train.

In view of the defects in the above structure, the technical problem to be solved by the present invention is to provide a bogie with a drive device suitable for straddle-type monorail trains.

Contents of the invention

In order to solve the above technical problems, the first object of the present invention is to provide a straddle type monorail train bogie. The driving device of the bogie is arranged longitudinally to meet the space layout requirements of straddle-type monorail trains, and the gear box in the driving device is equipped with bevel gears, so that the driving device can be connected horizontally and drive the running system longitudinally, thus meeting the requirements of straddle-seat monorail trains. requirements for monorail trains. On this basis, the present invention also provides a straddle type monorail train provided with the bogie.

The bogie of the straddle-type monorail train provided by the present invention includes a frame, a running system is installed in the middle of the frame, and a driving device for driving the running system is installed on the frame, and the driving device includes a gear box and traction motor; the gear box and the traction motor are longitudinally arranged on both sides of the bogie, the input shaft of the gear box is longitudinally connected to the traction motor, and the gear box is provided with a bevel gear so that Its output shaft can be connected transversely and drive the running system longitudinally.

Since the running system of the above-mentioned straddle-type monorail train is arranged at the middle position of the bogie, the occupied lateral space is relatively large. The driving device is arranged longitudinally along the direction of train travel, without occupying a limited horizontal space, which meets the space arrangement requirements of straddle-type monorail trains, and through the setting of bevel gears, the driving device arranged longitudinally can still be connected horizontally and driven longitudinally. system to meet the requirements of straddle-type monorail trains.

Optionally, any transmission shaft of the gearbox extends through the gearbox casing to form an extension outside the gearbox casing;

The bogie also includes a matched brake disc and a brake caliper, the brake disc is mounted on the extension.

Optionally, a brake caliper flange is provided on the outer wall of the gearbox case, and the brake caliper is installed on the brake caliper flange.

Optionally, the gearbox has a gearbox flange, and the frame has a frame flange; the gearbox flange and the frame flange are provided with corresponding bolt holes for passing through the flange They are connected by bolts, and both are provided with protruding parts extending outward along the surface of the disk. The protruding parts of the two are fitted together and are provided with corresponding twisted holes for bolt connection through the hinged holes.

Optionally, the frame is provided with a motor mounting seat for installing the traction motor, and four corners of the traction motor are provided with mounting feet;

Both ends of the motor mounting base are provided with flanges extending in the transverse direction, and the mounting feet are placed on the motor mounting base and interfere with the flanges, and are fixed by fastening bolts.

Optionally, steps are provided on both sides of the motor mounting seat, and the step side wall between the upper end surface of the motor mounting seat and the step surface constitutes a frame reference plane; the mounting feet are placed on the upper end surface, and A foot datum plane of the mounting foot is aligned with the frame datum plane.

Optionally, the motor mount is integrally formed on the frame.

Optionally, the traction motor and the gearbox are connected through a longitudinally arranged coupling, and the coupling includes two matching half couplings, one end of the half coupling is connected to the traction motor The output shaft is connected, and one end of the other half-coupling is connected with the input shaft of the gearbox; and the other ends of the two half-couplings are connected by a flexible block, so that the two half-couplings Has a predetermined amount of float.

The present invention also provides a straddle-type monorail train, comprising a car body and a bogie located at the bottom of the car body; the bogie is the bogie described in any one of the above. Since the above-mentioned bogie has the above-mentioned technical effect, the straddle-type monorail train with the bogie also has the same technical effect.

Description of drawings

Fig. 1 is a structural representation of a specific embodiment of a straddle type monorail train bogie provided by the present invention;

Fig. 2 is a schematic diagram of the bogie driving device and the foundation braking device in Fig. 1;

Fig. 3 is the connection schematic diagram of the gearbox and the frame of the bogie in Fig. 1;

Fig. 4 is a structural schematic diagram of the frame flange of the bogie in Fig. 1;

Fig. 5 is a schematic diagram of the lateral connection between the traction motor and the frame of the bogie in Fig. 1;

Fig. 6 is a schematic diagram of the longitudinal connection between the traction motor and the frame of the bogie in Fig. 1;

Figure 7 is a partially enlarged view of part I in Figure 5;

Fig. 8 is a schematic diagram of the connection between the bogie gearbox and the traction motor and the two half-couplings in Fig. 1;

In Figure 1-8:

Traction motor 1, gearbox 2, coupling 3, frame 4, brake disc 5, brake caliper 6, running system 7;

Mounting foot 11, traction motor output shaft 12;

Gearbox flange 21, input shaft 22, intermediate shaft 23, output shaft 24, bevel gear 25, cylindrical gear 26, extension 27;

The first half coupling 31, the second half coupling 32;

Motor mounting seat 41, flange 411, fastening bolt 42, frame flange 43;

Mounting foot reference plane 111, frame reference plane 412;

Gear box bolt hole 211, gear box protrusion 212, gear box hinged hole 213;

Gear box bolt holes 431 , frame protrusions 432 , and frame twist holes 433 .

Detailed ways

In order to solve the above-mentioned technical problems, the core of the present invention is to provide a straddle-type monorail train bogie, the driving device of the bogie is arranged longitudinally to meet the spatial arrangement requirements of the straddle-type monorail train, and the gears in the drive device The box is equipped with bevel gears, so that the driving device can be connected horizontally and drive the running system longitudinally, so as to meet the requirements of straddle-type monorail trains. Another core of the present invention is to provide a straddle-type monorail train, which includes the above-mentioned bogie.

In order to enable those skilled in the art to better understand the technical solutions of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

It should be noted that the orientation words "longitudinal", "horizontal" and "vertical" appearing in this article are determined according to the direction of travel of the straddle-type monorail train, and "longitudinal" refers to the direction of travel of the straddle-type monorail train. In the same direction, "horizontal" refers to the direction perpendicular to the running direction of the straddle monorail train on the plane where the bogie is located, and "vertical" refers to the direction perpendicular to the plane where the bogie is located. Obviously, the above " Horizontal", "vertical", and "vertical" are directions perpendicular to each other in three-dimensional space. It should be understood that the appearance of the orientation word is defined by the traveling direction of the straddle-type monorail train, and its appearance should not affect the protection scope of the present invention.

Please refer to the accompanying drawings 1-2, wherein, Fig. 1 is a structural schematic diagram of a specific embodiment of a straddle-type monorail train bogie provided by the present invention, and Fig. 2 is a principle of the bogie driving device and the foundation braking device in Fig. 1 picture.

In this specific embodiment, the bogie of the straddle type monorail train provided by the present invention (shown in accompanying drawing 1) comprises frame 4, and running system 7 is installed in the middle of frame 4, and frame 4 is also installed for driving running system 7 The driving device, the driving device includes a gearbox 2 and a traction motor 1, wherein the gearbox 2 and the traction motor 1 are longitudinally arranged on both sides of the bogie, that is, installed on both sides of the frame 4, the input shaft 22 of the gearbox 2 Longitudinally connected to the traction motor 1, and the gearbox 2 is provided with a bevel gear 25, the setting of the bevel gear 25 enables the input shaft 22 and the output shaft 24 to be relatively vertical to change the power output direction, so that the output shaft 24 can be connected horizontally and vertically Drive travel system 7.

Since the running system 7 of the above-mentioned straddle-type monorail train is arranged at the middle position of the bogie, the occupied lateral space is relatively large. In this embodiment, the driving device is arranged longitudinally along the direction of train travel, and is arranged on both sides of the bogie, without occupying limited lateral space, which meets the spatial arrangement requirements of straddle-type monorail trains, and the setting of bevel gear 25 makes the vertical The arranged drive device is still capable of longitudinally driving the travel system 7 .

Specifically, the bevel gear 25 changes the direction of the torque transmitted by the driving device through right-angle transmission. As shown in Figure 2, the traction motor 1 provides lateral torque, which is transmitted to the input shaft 22 of the gearbox 2 through the output shaft 12 of the traction motor, and a pair of bevel gears 25 meshing with each other are arranged in the gearbox 2 to realize The bevel gear is transmitted at right angles, so that the torque transmitted by the traction motor 1 is converted from horizontal to vertical, realizing the longitudinal transmission of torque, and meeting the driving requirements of straddle-type monorail trains. Wherein, the driving wheel of the bevel gear 25 meshing with each other can be selected as a large gear, and the driven wheel can be selected as a small gear, which can increase the torque while realizing torque transmission, thereby increasing the running speed of the straddle-type monorail train .

In addition, as shown in Figure 2, the gearbox 2 can also include an intermediate shaft 23 and a pair of cylindrical gears 26 meshing with each other. One-stage bevel gear right-angle transmission and second-stage cylindrical gear transmission for changing the magnitude of torque. Wherein, the input shaft 22 of the gearbox 2 is equipped with the driving wheel of the bevel gear 25, the intermediate shaft 23 is equipped with the driven wheel of the bevel gear 25 and the driving wheel of the cylindrical gear 26, and the driven wheel of the cylindrical gear 26 is installed on the output shaft 24 of the gearbox 2 . In the intermeshing cylindrical gear 26, it can be set as follows: the driving wheel is a large gear, and the driven wheel is a small gear, then the cylindrical gear transmission can increase the size of the torque transmitted by the driving device, thereby improving the running speed of the straddle-type monorail train , to further meet the driving requirements of straddle-type monorail trains.

Specifically, one end of the output shaft 24 of the gearbox 2 can be connected to the running system 7, and the other end can pass through the casing of the gearbox 2 and extend to the outside of the casing of the gearbox 2 to form an extension 27; in addition, the straddle-type monorail train bogie A matching brake disc 5 and a brake caliper 6 are also included, wherein the brake disc 5 can be mounted on the extension 27 .

As shown in Figures 1 and 2, in this embodiment, the brake disc 5 is connected to the extension 27 of the output shaft 24 of the gearbox 2, that is, it is connected to the gearbox 2, which reduces the need for the foundation braking device on the frame 4. space requirements. But those skilled in the art can understand that the mounting position of the brake disc 5 is not limited thereto, since the main function of the brake disc 5 is to realize the braking function of the straddle rail train, the brake disc 5 can also be installed On the axle of the traveling system 7, at this time, the foundation braking device is installed on the frame 4, which needs to occupy a relatively large installation space of the frame 4, while the traveling system 7 in this embodiment is arranged laterally in the middle of the bogie, which has occupied The frame 4 has a certain horizontal space. Obviously, in this embodiment, the brake disc 5 is installed on the extension 27 outside the output shaft 24 of the gearbox 2, which solves the problem of the traditional axle brake disc installation method and the horizontal space of the straddle monorail train. Limited contradictions.

It can be understood that the brake disc 5 is not limited to be installed on the output shaft 24. It can be understood with reference to FIG. Disc 5, that is, any transmission shaft of gearbox 2 (including output shaft 24, intermediate shaft 23 and input shaft 22) can be used to install brake disc 5 after being extended, so as to achieve the purpose of rationally arranging the basic braking device. Certainly, installing the brake disc 5 on the output shaft 24 is easier to achieve a spatial arrangement, and is well matched with the brake caliper 6 .

Further, a brake caliper flange may be provided on the outer wall of the gearbox 2 , and the brake caliper 6 is mounted on the brake caliper flange, so that the brake caliper 6 is hung on the outer wall of the gear box 2 . As mentioned above, the brake disc 5 is connected to the extension 27 of the drive shaft 24 of the gearbox 2 , that is, the entire basic braking device is connected to the case body of the gearbox 2 . When the train brakes, the two brake pads of the brake caliper 6 press the side of the brake disc 5 tightly to generate a braking force through friction, which reduces the speed of the output shaft 24 of the gear box 2 until it is zero, and the straddle The kinetic energy of the monorail train is converted into heat energy and dissipated in the atmosphere to realize the braking of the straddle monorail train.

As mentioned above, the arrangement of the brake caliper 6 suspended from the gearbox 2 can save the installation space of the foundation brake device. It can be understood that the arrangement of the brake caliper 6 is not limited to this, and can also be hung on the frame 4. However, in this embodiment, the brake caliper 6 is preferably arranged to be suspended from the outer wall of the gearbox 2. The reason is the same as above, and will not be repeated here.

For the above-mentioned embodiments, further improvements can be made, please continue to refer to Fig. 3-6, wherein Fig. 3 is a schematic structural diagram of the gearbox of the bogie in Fig. 1; Fig. 4 is a schematic structural diagram of the frame flange of the bogie in Fig. 1 Fig. 5 is a schematic diagram of the horizontal connection between the traction motor and the frame of the bogie in Fig. 1; Fig. 6 is a schematic diagram of the longitudinal connection between the traction motor and the frame of the bogie in Fig. 1; Fig. 7 is a partial enlarged view of part I in Fig. 6.

As shown in Figures 3 and 4, the gearbox 2 can have a gearbox flange 21, and the frame 4 can have a frame flange 43. In addition, the gear box flange 21 and the frame flange 43 can be provided with corresponding positions. The gear box bolt holes 211 and the frame bolt holes 431 are connected by flange bolts, and both of them can also be provided with a gear case protrusion 212 and a frame protrusion 432 extending outward along the disk surface, and the protrusions of the two are opposite to each other. Attached and provided with gear box hinged holes 213 and frame hinged holes 433 corresponding to the positions, so as to be connected by bolts through the hinged holes.

In this embodiment, double-layer positioning is adopted between the gearbox flange 21 and the frame flange 43, that is, the joint positioning of the flange bolts and hinged hole bolts is adopted, compared with the single-layer positioning of the traditional flange bolts , the positioning is more accurate, so that the precise cooperation between the gearbox 2 and the traction motor 1, the brake disc 5 and the brake caliper 6 is realized, and the rigid connection between the gearbox 2 and the frame 4 is realized. In addition, the positioning of the reaming hole bolt connection is accurate and the positioned gearbox flange 21 and frame flange 43 cannot slide, and the reaming hole bolt positioning can resist greater lateral loads.

It can be understood that the connection method between the gearbox 2 and the frame 4 is not limited to this, and flange bolts can also be used for single-layer positioning. However, since the shaft head of the input shaft 22 of the gearbox 2 needs to be aligned with the shaft head of the output shaft 12 of the traction motor , and the brake caliper 6 needs to be aligned with the brake disc 5, the required installation position of the gearbox 2 is relatively precise, and the single flange bolt positioning cannot meet the precise positioning requirements. Therefore, this embodiment preferably The above-mentioned double-layer positioning method is used for positioning.

Further, as shown in Figure 5, the frame 4 can be provided with a motor mount 41 for installing the traction motor 1, and the four corners of the traction motor 1 can be provided with mounting feet 11; meanwhile, the two ends of the motor mount 41 (shown in Figure 5 The longitudinal section of the motor mounting seat) can be provided with a flange 411 extending laterally to form a card slot. The mounting foot 11 is placed on the motor mounting seat 41 and interferes with the flange 411, and the vertically arranged fastening bolts 42 fixed.

Through the above method, the installation positions of the traction motor 1 and the frame 4 in the transverse direction are determined, wherein the slot formed by the transverse flange 411 can limit the longitudinal displacement of the mounting foot 11, so that the longitudinal positioning of the traction motor 1 is more accurate. It can be understood that the positioning method of the traction motor 1 and the frame 4 in the lateral direction is not limited to this, and can also be directly fixed by the fastening bolts 42, but the positioning method supplemented by the flange 411 obviously makes the positioning of the traction motor 1 more reliable and not easy to fix. Move along the longitudinal direction to ensure the normal driving of the traction motor 1.

Simultaneously, as shown in Figure 6 and Figure 7, the both sides of motor mounting seat 41 (Fig. 6 shows transverse section) can be provided with steps, the step side wall between the upper end surface of motor mounting seat 41 and the step surface constitutes frame datum plane 412; the mounting foot 11 is placed on the upper end surface of the motor mounting seat 41, and the mounting foot reference surface 111 outside the mounting foot 11 is aligned with the frame reference surface 412, thereby determining the fixed position of the traction motor 1 and the frame 4 in the longitudinal direction. It can be understood that the determination of the longitudinal installation position of the traction motor 1 and the motor mounting base 41 is not limited to setting steps on the frame 4, and theoretically it is also feasible to set a flange extending in the longitudinal direction and form a card slot to limit the mounting feet 11 .

Of course, in this embodiment, steps are preferably provided on both sides of the motor mounting base 41, and laterally extending flanges 411 are provided at both ends, so as to facilitate the installation of the traction motor 1 to the motor mounting base 41, and the lateral flanges 411 can effectively prevent the traction motor 1 from Longitudinal movement is easy to occur, and the frame reference plane 412 formed by the steps can already meet the determined requirements of the longitudinal installation position, and the frame reference plane 412 is formed after setting the steps, which can be compatible with the traction motor 1 on the premise of avoiding interference with other components. The mounting foot reference planes 111 are aligned.

Through the above method, after the horizontal and vertical installation positions of the traction motor 1 and the frame 4 are determined, they are fixed by fastening bolts 42 to realize the rigid connection between the traction motor 1 and the frame 4 . Therefore, there is no relative position change between the gear box 2 and the frame 4 and between the traction motor 1 and the frame 4, and the efficiency of torque transmission is high. It can be understood that the connection between the traction motor 1 and the frame 4, and the connection between the gearbox 2 and the frame 4 is not limited to the rigid connection formed by bolt connection, for example, it can be connected by a pin shaft; in fact, it is not limited to the rigid connection, for example, traction Both the motor 1 and the gear box 2 can be elastically fixed to the frame 4 through rubber joints. Of course, a rigid connection has higher torque transmission efficiency, which is a more preferred solution.

On this basis, the motor mounting base 41 can be integrally formed on the frame 4 . It can be understood that the motor mounting seat 41 is not limited to being integrally formed with the frame 4, and a separate mounting seat can also be designed and then fixed to the frame 4. Obviously, the integrally formed arrangement is easy to achieve light weight and easy to process.

For the above embodiments, further improvements can be made, please continue to refer to FIG. 8 , which is a schematic diagram of the connection between the gearbox and the traction motor and the two half-couplings respectively.

Specifically, as shown in FIG. 8, the traction motor 1 and the gearbox 2 can be connected through a longitudinally arranged coupling 3, and the coupling 3 includes a matching first half coupling 31 and a second half coupling 32. One end of the first half coupling 31 is connected to the output shaft 12 of the traction motor, and one end of the second half coupling 32 is connected to the input shaft 22 of the gearbox 2; and the first half coupling 31 is connected to the second half The other end of the coupling 32 can be butted through the flange, and the coupling 3 can adopt a drum-shaped gear coupling, and the displacement can be realized through the inner teeth of the outer sleeve of the drum-shaped gear coupling and the drum-shaped teeth, so that Make the first half-coupling 31 and the second half-coupling 32 have a predetermined floating amount.

In this embodiment, the first half-coupling 31 and the second half-coupling 32 of the vertically arranged coupling 3 are respectively connected to the output shaft 12 of the traction motor and the input shaft 22 of the gear box 2, and are connected by a flexible block. The predetermined floating amount of the first half coupling 31 and the second half coupling 32 can compensate the relative offset of the two connected shafts, that is, the coupling 3 has a certain displacement capability. In addition, since the gearbox 2 and the traction motor 1 are rigidly connected to the frame 4, the relative displacement between the gearbox 2 and the traction motor 1 is very small, and the displacement capacity of the coupling 3 is far beyond what may occur between the traction motor 1 and the gearbox 2. Therefore, after the coupling 3 is assembled, the positions and heights of the traction motor 1, the gearbox 2 and the coupling 3 do not need to be adjusted, so that the installation positions of the traction motor 1, the gearbox 2 and the coupling 3 are accurate and secure The method is simple.

The present invention also provides a straddle-type monorail train, comprising a car body and a bogie located at the bottom of the car body; wherein, the bogie is the bogie described in any one of the above embodiments. Since the above-mentioned bogie has the above-mentioned technical effect, the straddle-type monorail train having the bogie also has the same technical effect, and will not be repeated here.

The straddle monorail train and its bogie structure provided by the present invention have been introduced in detail above. In this paper, specific examples are used to illustrate the principle and implementation of the present invention, and the descriptions of the above embodiments are only used to help understand the method and core idea of the present invention. It should be pointed out that for those skilled in the art, without departing from the principle of the present invention, some improvements and modifications can be made to the present invention, and these improvements and modifications also fall within the protection scope of the claims of the present invention.

Claims (8)

1. a kind of bogie of straddle-type monorail train, including framework (4), the middle part installation walking system of the framework (4) (7), and the framework (4) also installs the drive device for driving the walking system (7), and the drive device includes gear Case (2) and traction electric machine (1), it is characterised in that：The gear-box (2) and the traction electric machine (1) are longitudinally disposed at described turn To the both sides of frame, the input shaft (22) of the gear-box (2) is longitudinally connected in the traction electric machine (1), and the gear-box (2) Provided with bevel gear (25), so that its output shaft (24) being capable of lateral connection and walking system (7) described in zigzag tread patterns；

The gear-box (2) has gear-box ring flange (21), and the framework (4) has framework ring flange (43)；The gear Case ring flange (21) and the framework ring flange (43) are provided with the bolt hole of position correspondence, to be connected by flange bolt, and two Person is equipped with the protuberance to stretch out along card, and the protuberance of the two fits and the process hole provided with position correspondence, To be connected by hinged bolts.

2. bogie according to claim 1, it is characterised in that：Any power transmission shaft of the gear-box (2) passes through the tooth Roller box (2) casing, which extends to, forms extension (27) outside the gear-box (2) casing；

The bogie also includes brake disc (5) and the brake clamp (6) being engaged, and the brake disc (5) is installed on described prolong Long portion (27).

3. bogie according to claim 2, it is characterised in that：Gear-box (2) cabinet exterior sets brake clamp Flange, the brake clamp (6) are installed on the brake clamp flange.

4. according to the bogie described in claim any one of 1-3, it is characterised in that：The framework (4) is provided with described in installation and led Draw the motor mount (41) of motor (1), the corner of the traction electric machine (1) is equipped with installation foot (11)；

The both ends of the motor mount (41) are equipped with the flange (411) extended transversely, and the installation foot (11) is placed in institute State motor mount (41) and contact at the flange (411), and it is fixed by fastening bolt (42).

5. bogie according to claim 4, it is characterised in that：The both sides of the motor mount (41) are provided with step, Mesa sidewall between the upper surface of the motor mount (41) and step surface forms framework reference plane (412)；The installation Pin (11) is placed in the upper surface, and the installation foot reference plane (111) of the installation foot (11) and the framework reference plane (412) Alignment.

6. bogie according to claim 5, it is characterised in that：The motor mount (41) is shaped in the structure Frame (4).

7. according to the bogie described in claim any one of 1-3, it is characterised in that：The traction electric machine (1) and the gear Case (2) is connected by longitudinally disposed shaft coupling (3), and the shaft coupling (3) includes two half-couplinves to match, described in one One end of half-coupling is connected with traction electric machine output shaft (12), one end and the gear-box (2) of another half-coupling Input shaft (22) connection；And two the other end of the half-coupling connected by flexible block so that the two half-couplinves tools There is predetermined amount of floating.

8. a kind of straddle-type monorail train, including car body and the bogie positioned at vehicle bottom, it is characterised in that：The bogie For the bogie described in claim any one of 1-7.